CN105119696B - The method and apparatus of transmission control information in a radio communications system - Google Patents

Abstract

The present invention relates to the method and apparatus of transmission control information in a radio communications system.A kind of radio communications system is disclosed.It is disclosed a kind of method and its device for using the transmission control information of PUCCH format 3 in a radio communications system.This method includes：Detect one or more physical downlink control channel (PDCCH)；Receive one or more physical down link sharing channel (PDSCH) corresponding with one or more PDCCH；And determine PUCCH resource value in the multiple PUCCH resource values configured by higher level for PUCCH format 3The PUCCH resource valueCorresponding to the value of transmitting power control (TPC) field for the PDCCH for being used for PDSCH signals in secondary cell (SCell).If configuring single antenna port transmission pattern, the PUCCH resource value indicated by TPC fieldsIt is mapped to a PUCCH resource for single antenna port, and if configuration multi-antenna port transmission mode, the PUCCH resource value indicated by TPC fieldsIt is mapped to multiple PUCCH resources for multi-antenna port.

Description

Method and apparatus for transmitting control information in radio communication system

The application is a divisional application of a patent application with an international application number 201180036115.0(PCT/KR2011/008295) with an application date of 2011, 11, and 2, filed on 23/1/2013, entitled "method and apparatus for transmitting control information in a radio communication system".

Technical Field

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

Background

Wireless communication systems have been diverged to provide various communication services such as voice or data services. Generally, a wireless communication system is a multiple access system that is capable of sharing available system resources (bandwidth, transmission power, etc.) to support communication with multiple users. 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, single carrier frequency division multiple access (SC-FDMA) systems, and the like.

Disclosure of Invention

Technical problem

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

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

[ technical solution ]

To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a method for transmitting control information by a communication device using a Physical Uplink Control Channel (PUCCH) format 3 in a radio communication system, includes: detecting one or more Physical Downlink Control Channels (PDCCHs); receiving one or more Physical Downlink Shared Channel (PDSCH) signals corresponding to one or more PDCCHs; and determining a PUCCH resource value among a plurality of PUCCH resource values configured by a higher layer for PUCCH format 3PUCCH resource values according to the following tableA value of a Transmission Power Control (TPC) field corresponding to a PDCCH for a PDSCH signal on a secondary cell (SCell), wherein, if a single antenna port transmission mode is configured, a PUCCH resource value indicated by the TPC fieldMapped to one PUCCH resource for a single antenna port, and wherein the PUCCH resource value indicated by the TPC field if a multi-antenna port transmission mode is configuredMapped to a plurality of PUCCH resources for multiple antenna ports:

where p denotes an antenna port number.

In another aspect of the present invention, a communication device is configured,transmitting control information using a Physical Uplink Control Channel (PUCCH) format 3 in a radio communication system, including: a Radio Frequency (RF) unit; and a processor configured to detect one or more Physical Downlink Control Channels (PDCCHs), receive one or more Physical Downlink Shared Channel (PDSCH) signals corresponding to the one or more PDCCHs, and determine a PUCCH resource value among a plurality of PUCCH resource values configured by a higher layer for PUCCH format 3PUCCH resource values according to the following tableA value of a Transmission Power Control (TPC) field corresponding to a PDCCH for a PDSCH signal on a secondary cell (SCell), wherein, if a single antenna port transmission mode is configured, a PUCCH resource value indicated by the TPC fieldMapped to one PUCCH resource for a single antenna port, and wherein the PUCCH resource value indicated by the TPC field if a multi-antenna port transmission mode is configuredMapped to a plurality of PUCCH resources for multiple antenna ports:

where p denotes an antenna port number.

PUCCH resource values if a single antenna port transmission mode is configuredMay be mapped to PUCCH resources for antenna port p0And PUCCH resources if multi-antenna port transmission is configuredMay be mapped to PUCCH resources for antenna port p0And PUCCH resource for antenna port p1

The value of the TPC field of the PDCCH for the PDSCH signal on the primary cell (PCell) may be used to control the transmission power for the PUCCH format 3.

If the one or more PDSCH signals include a plurality of PDSCH signals on the SCell, the values of the TPC fields of the plurality of PDCCHs corresponding to the plurality of PDSCH signals on the SCell may be the same.

The control information may include a hybrid automatic repeat request acknowledgement (HARQ-ACK) for the PDSCH signal.

The method may further include receiving allocation information indicating a plurality of PUCCH resources for antenna port p0, and additionally receiving the allocation information indicating a plurality of PUCCH resources for antenna port p1 only when multi-antenna port transmission is possible or when a multi-antenna port transmission mode is configured.

The communication device can use the mapped PUCCH resource valuesTo transmit control information.

[ advantageous effects ]

According to the present invention, control information can be efficiently transmitted in a wireless communication system. In addition, a channel format and a signal processing method for efficiently transmitting control information can be provided. In addition, resources for transmitting control information can be efficiently allocated.

The effects of the present invention are not limited to the above-described effects, and other effects can be understood by those skilled in the art from the following description.

Drawings

The accompanying drawings, which are included to provide a part of the detailed description of the invention and to assist in understanding the invention, provide embodiments of the invention and, together with the detailed description, describe a technical map of the invention.

Fig. 1 illustrates physical channels for a third generation partnership project (3GPP) Long Term Evolution (LTE) system, which is an example of a wireless communication system, and a general signal transmission method using the physical channels;

fig. 2 is a schematic diagram showing the structure of a radio frame;

fig. 3A is a schematic diagram showing an uplink signal processing procedure;

fig. 3B is a diagram illustrating a downlink signal processing procedure;

fig. 4 is a diagram illustrating a single carrier frequency division multiple access (SC-FDMA) scheme and an Orthogonal Frequency Division Multiple Access (OFDMA) scheme;

fig. 5 is a diagram showing a signal mapping scheme on a frequency domain satisfying a single carrier characteristic;

fig. 6 is a schematic diagram showing a signal processing procedure for mapping DTF-processed output samples to a single carrier in clustered SC-FDMA;

fig. 7 and 8 are schematic diagrams showing a multi-carrier signal processing procedure in which DFT processed output samples are mapped to clustered SC-FDMA;

fig. 9 is a diagram showing a signal processing procedure in the segmented SC-FDMA;

fig. 10 is a diagram illustrating a structure of an uplink subframe;

fig. 11 is a diagram illustrating a signal processing procedure for transmitting a Reference Signal (RS) in an uplink;

fig. 12 is a diagram illustrating a demodulation reference signal (DMRS) for a Physical Uplink Shared Channel (PUSCH);

fig. 13 to 14 are diagrams illustrating a slot level structure of Physical Uplink Control Channel (PUCCH) formats 1a and 1 b;

fig. 15 and 16 are diagrams illustrating a slot level structure of the PUCCH format 2/2a/2 b;

fig. 17 is a diagram illustrating ACK/NACK channelization of PUCCH formats 1a and 1 b;

fig. 18 is a diagram illustrating channelization of a structure in which PUCCH formats 1/1a/1b and 2/2a/2b are mixed within the same PRB;

fig. 19 is a diagram illustrating allocation of PRBs for transmission of a PUCCH;

fig. 20 is a conceptual diagram of management of downlink component carriers in a Base Station (BS);

fig. 21 is a conceptual diagram of management of uplink component carriers in a User Equipment (UE);

fig. 22 is a conceptual diagram of a case where one MAC layer manages multiple carriers in a BS;

fig. 23 is a conceptual diagram of a case where one MAC layer manages multiple carriers in a UE;

fig. 24 is a conceptual diagram of a case where one MAC layer manages multiple carriers in a BS;

fig. 25 is a conceptual diagram of a case where multiple MAC layers manage multiple carriers in a UE;

fig. 26 is a conceptual diagram of a case where a plurality of MAC layers manage multiple carriers in a BS;

fig. 27 is a conceptual diagram of a case of managing multiple carriers in view of reception of one or more MAC layers of a UE;

fig. 28 shows a schematic diagram of asymmetric Carrier Aggregation (CA) in which a plurality of Downlink (DL) Component Carriers (CCs) and Uplink (UL) CCs are linked;

fig. 29A to 29F are diagrams illustrating the structure of PUCCH format 3 and its signal processing procedure;

fig. 30 to 31 are diagrams illustrating a PUCCH structure with increased RS multiplexing capacity and a signal processing procedure according to an embodiment of the present invention;

fig. 32 is a schematic diagram showing a signal processing block/program for SORTD.

Fig. 33 is a diagram illustrating the SORTD operation.

Fig. 34 is a diagram illustrating a BS and a UE applicable to the present invention.

Detailed Description

The following techniques may be utilized in various radio access systems, such as 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, or single carrier frequency division multiple access (SC-FDMA) systems. A CDMA system may be implemented as a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA 2000. The TDMA system may be implemented as a radio technology such as global system for mobile communications (GSM)/General Packet Radio Service (GPRS)/enhanced data rates for GSM evolution (EDGE). The OFDMA system may be implemented as a radio technology such as IEEE802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802-20, or E-UTRA (evolved UTRA). The UTRA system is part of the Universal Mobile Telecommunications System (UMTS). The third generation partnership project long term evolution (3GPP LTE) communication system is part of E-UMTS (evolved UMTS) which employs an OFDMA system in the downlink and an SC-FDMA system in the uplink. LTE-a (advanced) is an evolved version of 3GPP LTE. For clarity of description, 3GPP LTE/LTE-a will be focused on, but the technical scope of the present invention is not limited thereto.

In a radio communication system, a User Equipment (UE) receives information from a Base Station (BS) in a Downlink (DL) and transmits information to the BS in an Uplink (UL). Information transmitted or received between the BS and the UE includes data and various control information, and there are various physical channels according to the kind/use of the transmitted or received information.

Fig. 1 illustrates a physical channel for a third generation partnership project (3GPP) Long Term Evolution (LTE) system and a view of a general signal transmission method using the physical channel.

When the UE is powered on or when the UE re-enters the cell, the UE performs an initial cell search operation such as synchronization with the BS in step S101. For an initial cell search operation, the UE may receive a primary synchronization channel (P-SCH) and a secondary synchronization channel (S-SCH) from the BS to perform synchronization with the BS and acquire information such as a cell ID. Thereafter, the UE may receive a physical broadcast channel from the BS and acquire broadcast information in the cell. Meanwhile, the UE may receive a downlink reference signal (DL RS) in the initial cell search step and confirm a downlink channel state.

The UE that completes the initial cell search may receive a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH) corresponding to the PDCCH, and acquire more detailed system information in step S102.

Thereafter, the UE may perform a random access procedure in steps S103 to S106 in order to complete access to the eNB. For the random access procedure, the UE may transmit a preamble via a Physical Random Access Channel (PRACH) (S103), and may receive a message via the PDCCH and a PDSCH corresponding to the PDCCH in response to the preamble (S104). In contention-based random access, a contention resolution procedure including additional PRACH transmission (S105) and reception (S106) of a PDCCH and a PDSCH corresponding thereto may be performed.

The UE performing the above procedure may then receive PDCCH/PDSCH (S107) and transmit a Physical Uplink Shared Channel (PUSCH)/physical downlink control channel (PUCCH) (S108) as a general uplink/downlink signal transmission procedure. Control information transmitted from the UE to the BS is collectively referred to as Uplink Control Information (UCI). The UCI includes hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ ACK/NACK), Scheduling Request (SR), Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indicator (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 (ACK), Negative ACK (NACK), DTX, and NACK/DTX. UCI is typically transmitted via PUCCH. However, in case of simultaneously transmitting control information and traffic data, UCI may be transmitted via PUSCH. UCI may be aperiodically transmitted via PUSCH according to network requests/instructions.

Fig. 2 is a schematic diagram showing the structure of a radio frame. In a cellular OFDM radio packet communication system, uplink/downlink data packet transmission is performed in subframe units, and one subframe is defined as a predetermined duration including a plurality of OFDM symbols. The 3GPP LTE standard supports a type 1 radio frame structure applicable to Frequency Division Duplexing (FDD) and a type 2 radio frame structure applicable to Time Division Duplexing (TDD).

Fig. 2(a) shows the structure of a type 1 radio frame. The downlink radio frame includes 10 subframes, and one subframe includes two slots in a time domain. The time required to transmit one subframe is called a Transmission Time Interval (TTI). For example, one subframe has a length of 1 ms, and one slot has a length of 0.5 ms. One slot includes a plurality of OFDM symbols in a time domain and includes a plurality of Resource Blocks (RBs) in a frequency domain. In the 3GPP LTE system, since OFDMA is used in downlink, an OFDM symbol indicates one symbol part. The OFDM symbol may be referred to as an SC-FDMA symbol or a symbol part. An 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 according to the configuration of a Cyclic Prefix (CP). The CP includes an extended CP and a normal CP. For example, if the OFDM symbol is configured by the normal CP, the number of OFDM symbols included in one slot may be 7. If the OFDM symbol is configured by the extended CP, the number of OFDM symbols included in one slot is less than that in the case of the normal CP because the length of one OFDM symbol is increased. In case of the extended CP, for example, the number of OFDM symbols included in one slot may be 6. In case of unstable channel conditions, such as the case of high-speed movement of the UE, the extended CP may be used in order to further reduce inter-symbol interference.

In case of using the normal CP, one subframe includes 14 OFDM symbols because one slot includes seven OFDM symbols. Meanwhile, a maximum of three first 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).

Fig. 2(b) shows the structure of a type 2 radio frame. The type 2 radio frame includes two half frames, and each half frame includes five subframes, a downlink pilot time slot (DwPTS), a Guard Period (GP), and an uplink pilot time slot (UpPTS). From among these, one subframe includes two slots. The DwPTS is used for initial cell search, synchronization, or channel estimation of the UE. The UpPTS is used for channel estimation of the BS and uplink transmission synchronization of the UE. The GP is used to cancel interference generated in the uplink due to a multipath delay of a downlink signal between the uplink and the downlink.

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

Fig. 3A illustrates a diagram of a signal processing procedure for transmitting an Uplink (UL) signal at a UE.

To transmit the UL signal, the scrambling module 210 of the UE may scramble the transmitted signal using a UE-specific scrambling signal. The scrambled signal is input to the modulation mapper 220 so as to be modulated into complex symbols by a scheme of Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), or 16-quadrature amplitude modulation (16QAM)/64-QAM according to the kind of the transmitted signal and/or a channel status. Thereafter, the modulated complex symbols are processed by the transform pre-compiler 203 and input to the resource element mapper 204. Resource element mapper 204 may map the complex symbols to time-frequency resource elements. The processed signal may be transmitted to the BS via the SC-FDMA signal generator 205 and the antenna.

Fig. 3B is a diagram illustrating a signal processing procedure for transmitting a Downlink (DL) signal at a BS.

In the 3GPP LTE system, the BS may transmit one or more codewords in downlink. Accordingly, one or more codewords may be processed to configure complex symbols through the scrambling module 301 and the modulation mapper 302, similar to the UL transmission of fig. 3A. Thereafter, the complex symbols may be mapped to a plurality of layers by the layer mapper 303, and each layer may be multiplied by a precoding matrix by the precoding module 304 and may be allocated to each transmission antenna. The processed signals to be transmitted via the antennas, respectively, may be mapped to time-frequency resource elements by the resource element mapper 305 and may be transmitted via the OFDMA signal generator 306 and the antennas, respectively.

In a radio communication system, in the case where a UE transmits a signal in an uplink, a peak-to-average power ratio (PAPR) may be more problematic than in the case where a BS transmits a signal in a downlink. Accordingly, as described above with reference to fig. 3A and 3B, the OFDMA scheme is used to transmit downlink signals, while the SC-FDMA scheme is used to transmit uplink signals.

Fig. 4 is a diagram for explaining an SC-FDMA scheme and an OFDMA scheme. In the 3GPP system, the OFDMA scheme is used in the downlink and SC-FDMA is used in the uplink.

Referring to fig. 4, the UE for UL signal transmission is identical to the BS for DL signal transmission in that it includes a serial-parallel converter 401, a subcarrier mapper 403, an M-point Inverse Discrete Fourier Transform (IDFT) module 404, a parallel-serial converter 405, and a Cyclic Prefix (CP) adding module 406. The UE for transmitting a signal using the SC-FDMA scheme further includes an N-point DFT module 402. The N-point DFT module 402 partially offsets the IDFT processing impact of the M-point IDFT module 404 so that the transmitted signal has single carrier characteristics.

Fig. 5 is a diagram for explaining a signal mapping scheme in the frequency domain that satisfies a single-carrier characteristic in the frequency domain. Fig. 5(a) shows a partial mapping scheme, and fig. 5(b) shows a distributed mapping scheme.

A clustered SC-FDMA scheme, which is a modified form of the SC-FDMA scheme, will now be described. In the clustered SC-FDMA scheme, DFT process output samples are divided into subgroups in a subcarrier mapping process and mapped non-contiguously in the frequency domain (or subcarrier domain).

Fig. 6 is a schematic diagram showing a signal processing procedure in which DFT process output samples are mapped to a single carrier in a clustered SC-FDMA scheme. Fig. 7 and 8 are diagrams illustrating a signal processing procedure in which DFT-processed output samples are mapped to multiple carriers in a clustered SC-FDMA scheme. Fig. 6 shows an example of an SC-FDMA scheme applying intra-carrier clustering, and fig. 7 and 8 show an example of an SC-FDMA scheme applying inter-carrier clustering. Fig. 7 shows a case where a signal is generated by a single IFFT block and a subcarrier interval between consecutive component carriers is configured in a state where component carriers are allocated consecutively in the frequency domain, and fig. 8 shows a case where a signal is generated by a plurality of IFFT blocks in a state where component carriers are allocated non-consecutively in the frequency domain.

Fig. 9 is a diagram showing a signal processing procedure in the segmented SC-FDMA scheme.

In the segmented SC-FDMA scheme, IFFTs corresponding in number to a specific number of DFTs are applied such that the DFTs and IFFTs are in one-to-one correspondence, and the frequency subcarrier mapping configuration of the DFT spreading and IFFT of the conventional SC-FDMA scheme is extended. Therefore, the segmented SC-FDMA scheme is also referred to as NxSC-FDMA or NxFT-s-OFDMA scheme. In this specification, the general term "segmented SC-FDMA" is used. Referring to fig. 9, the segmented SC-FDMA scheme is characterized in that modulation symbols of the entire time domain are grouped into N (N is an integer greater than 1) groups and DFT processing is performed on a group unit basis in order to relax single carrier performance.

Fig. 10 is a diagram illustrating a structure of a UL subframe.

Referring to fig. 10, the UL subframe includes a plurality of slots (e.g., two). Each slot may include SC-FDMA symbols, the number of which varies according to the length of the CP. For example, in case of a normal CP, a slot may include seven SC-FDMA symbols. The UL subframe is divided into a data region and a control region. The data region includes a PUSCH and is used to transmit a data signal such as sound. The control region includes a PUCCH and is used to transmit control information. The PUCCH includes an RB pair (e.g., m 0,1,2,3) located at both ends of the data region on the frequency axis (e.g., an RB pair at a frequency mirror position), and hops between slots. The UL control information (i.e., UCI) includes HARQ ACK/NACK, Channel Quality Information (CQI), Precoding Matrix Indicator (PMI), Rank Indication (RI), and the like.

Fig. 11 is a diagram illustrating a signal processing procedure for transmitting a Reference Signal (RS) in uplink. The data is converted into a frequency domain signal by a DFT precomplexer, subjected to frequency mapping and IFFT, and transmitted. In contrast, the RS does not pass the DFT precompiler. More specifically, the RS sequence is directly generated in the frequency domain (step S11), subjected to a local mapping process (step S12), subjected to IFFT (step S13), subjected to CP addition process (step S14), and transmitted.

RS sequenceDefined by the cyclic shift α of the base sequence and expressed by equation 1.

Equation 1

Wherein,which indicates the length of the RS sequence,denotes the size of a resource block expressed in subcarrier units, and m is Indicating the maximum UL transmission band.

The basic sequenceThe groups are grouped into several groups. u ∈ {0, 1., 29} denotes a group number, and ν corresponds to a base sequence number in the corresponding group. Each group comprises(1. ltoreq. m.ltoreq.5) a base sequence of length v.ltoreq.0 and havingTwo base sequences of length v ═ 0, 1. The sequence group number u and the number v within the corresponding group may change over time. Basic sequenceIs defined by following the length of the sequence

Can be defined as followsOr a base sequence of greater length.

Relative toThe base sequence is given by the following equation 2

Equation 2

Wherein the qth root Zadoff-Chu sequence can be defined by the following equation 3.

Equation 3

Wherein q satisfies the following equation 4.

Equation 4

Wherein the length of the Zadoff-Chue sequenceGiven by the largest prime number, and thus satisfies

Can be defined as having a value less thanA base sequence of length (b). First, with respect toAndthe base sequence is given as in equation 5.

Equation 5

Wherein each is given in Table 1 below forAndvalue of (A)

TABLE 1

TABLE 2

RS hopping will now be described.

By group hopping pattern f_gh(n_s) And sequence shift pattern f_ssIs defined in time slot n_sSequence group numbering in (1)u, as shown in equation 6 below.

Equation 6

u＝(f_gh(n_s)+f_ss)mod₃₀，

Where the modulus 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 may have the same frequency hopping pattern but may have different sequence shift patterns.

Group hopping pattern f_gh(n_s) Is the same in PUSCH and PUCCH, and is given by equation 7 below.

Expression 7

Wherein c (i) represents a pseudo-random sequence and passes at the beginning of each radio frameThe pseudo-random sequence generator may be initialized.

In sequence shift pattern f_ssPUCCH and PUSCH are different in the definition of (a).

Sequence shift pattern for PUCCHIs thatAnd sequence shift pattern of PUSCHIs thatΔ_ssE {0, 1.., 29} is configured by higher layers.

Hereinafter, sequence hopping will be described.

Sequence hopping only applied to a frequency band withRS of length (g).

Relative to havingRS of length, base sequence number v within the base sequence group is v ═ 0.

Relative to havingRS of length of (1), given in slot n by equation 8 below_sBase sequence number v within the base sequence group in (1).

Equation 8

Wherein c (i) denotes a pseudo random sequence, and the parameter for enabling sequence hopping provided by a higher layer determines whether sequence hopping is enabled. At the beginning of a radio frame may be passedThe pseudo-random sequence generator is initialized.

RS for PUSCH is determined as follows.

Can pass throughDefining RS sequences r for PUCCH^PUSCH(. cndot.). m and n satisfyAnd satisfy

In one time slot, the cyclic shift is α ═ 2n_cs/12 and

is a broadcast value, is allocated to out by UL schedulingAnd n is_PRS(n_s) Is the cell specific cyclic shift value. n is_PRS(n_s) According to the time slot number n_sAnd is varied and is

c (i) is a pseudo-random sequence, and c (i) is a cell-specific value. At the beginning of a radio frame may be passedThe pseudo-random sequence generator is initialized.

Table 3 shows cyclic shift fields and

TABLE 3

The physical frequency hopping method for UL RS on PUSCH is as follows.

Multiplying the sequence by an amplitude scaling factor β_PUSCHAnd is mapped to r^PUSCH(0) The same set of Physical Resource Blocks (PRBs) for the corresponding PUSCH within the sequence starting at (a). l-3 is used for normal CP and l-2 is used for extended CP. When a sequence is mapped to a resource element (k, l) within a subframe, the order of k is first increased and then the slot number is increased.

In general, if the length is greater than or equal toThe ZC sequence is used together with the cyclic extension. If the length is less thanThe generated computer sequence is used. The cyclic shift is determined according to a cell-specific cyclic shift, a UE-specific cyclic shift, a frequency hopping pattern, and the like.

Fig. 12A is a schematic diagram illustrating a structure of a demodulation reference signal (DMRS) for a PUSCH in the case of a normal CP, and fig. 12B is a schematic diagram illustrating a structure of a DMRS for a PUSCH in the case of an extended CP. In fig. 12A, the DMRS is transmitted via the fourth and eleventh SC-FDMA symbols, and in fig. 12B, the DMRS is transmitted via the third and ninth SC-FDMA symbols.

Fig. 13 to 16 illustrate slot level structures of PUCCH formats. The PUCCH includes the following format in order to transmit control information.

(1) Format 1: this is for on-off keying (OOK) modulation and Scheduling Request (SR)

(2) Format 1a and format 1 b: they are used for ACK/NACK transmission

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

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

(3) Format 2: this is used for QPSK modulation and CQI transmission

(4) Format 2a and format 2 b: they are used for CQI and ACK/NACK simultaneous transmission.

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 shows SC-FDMA symbol positions of RSs according to the PUCCH format. In table 4, PUCCH formats 2a and 2b correspond to the case of a normal CP.

TABLE 4

PUCCH format	Modulation scheme	Number of bits per subframe, Mbit
			1	N/A	N/A
1a	BPSK	1
			1b	QPSK	2
2	QPSK	20
			2a	QPSK+BPSK	21
2b	QPSK+BPSK	22

TABLE 5

PUCCH format	Normal CP	Extended CP
			1,1a,1b	3	2
2	2	1
			2a,2b	2	N/A

TABLE 6

Fig. 13 shows PUCCH formats 1a and 1b in the case of a normal CP. Fig. 14 shows PUCCH formats 1a and 1b in the case of an extended CP. In the PUCCH format 1a and 1b structures, the same control information is repeated within a subframe in slot units. Each UE transmits ACK/NACK signals over different resources including Orthogonal Cover (OC) or Orthogonal Cover Code (OCC) (time domain code) and different cyclic shifts (frequency domain code) of a computer generated constant amplitude zero autocorrelation (CG-CAZAC) sequence. For example, the OC includes Walsh/DFT orthogonal codes. If the number of CSs is 6 and the number of OCs is 3, a total of 18 UEs can be multiplexed in the same physical resource Pool (PRB) using a single antenna. The orthogonal sequences w0, w1, w2, and w3 may be applied in a specific time domain (after FFT modulation) or a specific frequency domain (before FFT modulation).

For SR and persistent scheduling, ACK/NACK resources including CS, OC, and PRB may be provided to the UE through Radio Resource Control (RRC). For dynamic ACK/NACK and non-persistent scheduling, ACK/NACK resources may be implicitly allocated to a UE by the lowest CCE index of a PDCCH corresponding to a PDSCH.

Fig. 15 shows PUCCH formats 2/2a/2b in the case of a normal CP. Fig. 16 shows PUCCH formats 2/2a/2b in the case of an extended CP. Referring to fig. 15 and 16, in case of a normal CP, one subframe includes 10 QPSK data symbols in addition to RS symbols. Each QPSK symbol is spread in the frequency domain by CS and then mapped to a corresponding SC-FDMA symbol. SC-FDMA symbol level CS frequency hopping may be applied to randomize inter-cell interference. The RS may be multiplexed by CDM using CS. For example, if it is assumed that the number of available CSs is 12 or 6, 12 or 6 UEs may be multiplexed in the same PRB. For example, in PUCCH formats 1/1a/1b and 2/2a/2b, a plurality of UEs may be multiplexed by CS + OC + PRBs and CS + PRBs.

Length-4 and length-3 Orthogonal Sequences (OCs) for PUCCH format 1/1a/1b are shown in table 7 and table 8 below.

TABLE 7

Length-4 orthogonal sequences for PUCCH formats 1/1a/1b

TABLE 8

Length-3 orthogonal sequences for PUCCH formats 1/1a/1b

Orthogonal sequences (OC) for RS in PUCCH format 1/1a/1b are shown in Table 9.

TABLE 9

1a and 1b

Fig. 17 is a diagram for explaining ACK/NACK channelization for PUCCH formats 1a and 1 b. FIG. 17 showsThe case (1).

Fig. 18 is a diagram illustrating channelization of a structure in which a PUCCH format 1/1a/1b and a PUCCH format 2/2a/2b are mixed within the same PRB.

CS hopping and OC remapping can be applied as follows.

(1) Symbol-based cell-specific CS frequency hopping for inter-cell interference randomization

(2) Slot level CS/OC remapping

1) Randomizing for inter-cell interference

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

For PUCCH format 1-Resource n of 1a/1b_rIncluding the following combinations.

(1) CS (DFT OC in symbol level) (n)_cs)

(2) OC (OC in Slot level) (n)_oc)

(3) Frequency RB (n)_rb)

When indexes representing CS, OC and RB are n, respectively_cs、n_ocAnd n_rbThe typical index n_rIncluding n_cs、n_ocAnd n_rb。n_rSatisfies n_r＝(n_cs,n_oc,n_rb)。

CQI, PMI, RI, and a combination of CQI and ACK/NACK may be transmitted through PUCCH formats 2/2a/2 b. Reed-muller (RM) channel coding may be applied.

For example, in the LTE system, channel coding for UL CQI is described as follows. Coding of channel bit stream a using (20, A) RM code₀，a₁，a₂，a₃，...，a_A-1. Table 10 shows the base sequence for the (20, a) code. a is₀I and a_A-1L represents the Most Significant Bit (MSB) and the Least Significant Bit (LSB), respectively. In the case of the extended CP, the maximum information bit number is 11 except for the case where CQI and ACK/NACK are simultaneously transmitted. After the bit stream is coded into 20 bits using the RM code, QPSK modulation may be applied. The coded bits may be scrambled prior to QPSK modulation.

Watch 10

The channel coding bit b may be generated by equation 9₀，b₁，b₂，b₃，...，b_B-1。

Equation 9

Wherein, i is 0,1,2, …, 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 11

CQI and UCI field of PMI feedback. This field reports closed-loop spatially multiplexed PDSCH transmissions.

TABLE 12

Table 13 shows UCI fields for RI feedback for wideband reporting.

Watch 13

Fig. 19 shows PRB allocation. As shown in fig. 19, PRBs may be used in slot n_sPUCCH transmission in (2).

A multi-carrier system or a carrier aggregation system refers to a system for aggregating and utilizing a plurality of carriers having bandwidths smaller than a target bandwidth for broadband support. For backward compatibility with the existing system, when a plurality of carriers having a bandwidth smaller than a target bandwidth are aggregated, the bandwidth of the aggregated carriers may be limited to a bandwidth used in the existing system. For example, existing LTE systems may support bandwidths of 1.4, 3, 5, 10, 15, and 20MHz, and an LTE-advanced (LTE-a) system evolved from the LTE system may support bandwidths greater than 20MHz using only the bandwidth supported by the LTE system. Alternatively, regardless of the bandwidth used in the existing system, a new bandwidth may be defined to support CA. Multiple carriers may be used interchangeably with CA and bandwidth aggregation. The CAs include continuous CAs and non-continuous CAs.

Fig. 20 is a conceptual diagram of management of downlink component carriers in a BS, and fig. 21 is a conceptual diagram of management of uplink component carriers in a UE. For convenience of description, it is assumed that a higher layer is a MAC layer in fig. 20 and 21.

Fig. 22 is a conceptual diagram of a case where one MAC layer manages multiple carriers in a BS. Fig. 23 is a conceptual diagram of a case where one MAC layer manages multiple carriers in a UE.

Referring to fig. 22 and 23, one MAC layer manages one or more frequency carriers to perform transmission and reception. Since frequency carriers managed by one MAC layer do not need to be contiguous to each other, resource management is flexible. In fig. 22 and 23, one Physical (PHY) layer means one component carrier for convenience. One PHY layer does not necessarily mean a separate Radio Frequency (RF) device. Generally, one independent RF device means one PHY layer, but the present invention is not limited thereto. One RF device may include several PHY layers.

Fig. 24 is a conceptual diagram of a case where multiple MAC layers manage multiple carriers in a BS. Fig. 25 is a conceptual diagram of a case where a plurality of MAC layers manage multi-carriers in a UE, fig. 26 is another conceptual diagram of a case where a plurality of MAC layers manage multi-carriers in a BS, and fig. 27 is another conceptual diagram of a case where a plurality of MAC layers manage multi-carriers in a UE.

In addition to the structures shown in fig. 22 and 23, several MAC layers may control several carriers, as shown in fig. 24 to 27.

As shown in fig. 24 and 25, each MAC layer may control each carrier in a one-to-one correspondence, and as shown in fig. 26 and 27, each MAC layer may control each carrier in a one-to-one correspondence with respect to some carriers, and one MAC layer may control one or more carriers with respect to the remaining carriers.

The system includes multiple carriers, such as one carrier to N carriers, and the carriers may be contiguous or non-contiguous regardless of UL/DL. TDD systems are configured to manage multiple (N) carriers in DL and UL transmissions. The FDD system is configured such that a plurality of carriers are used in each of UL and DL. In case of FDD systems, asymmetric CA may be supported, where the number of carriers aggregated in UL and DL and/or the number of bandwidths of the carriers are different.

When the number of component carriers aggregated in UL and DL is the same, all component carriers can be configured to be backward compatible with the existing system. However, the present invention does not exclude component carriers that do not consider compatibility.

Hereinafter, for convenience of description, it is assumed that when a PDCCH is transmitted through the DL component carrier #0, a PDSCH corresponding to the PDCCH is transmitted through the DL component carrier # 0. However, cross-carrier scheduling may be applied, and the PDSCH may be transmitted through another DL component carrier. The term "component carrier" may be replaced with another equivalent term (e.g., cell).

Fig. 28 illustrates a scenario in which Uplink Control Information (UCI) is transmitted in a wireless communication system supporting CA. For convenience, in this example, it is assumed that the UCI is ACK/NACK (A/N). The UCI may include control information channel state information (e.g., CQI, PMI, RI, etc.) or scheduling request information (e.g., SR, etc.).

Fig. 28 is a diagram illustrating an asymmetric CA in which 5DL CCs and one UL CC are linked. The asymmetric CA may be set from the view point of UCI transmission. That is, DL CC-UL CC linkage for UCI and DL CC-UL CC linkage for data may be differently set. For convenience, if it is assumed that one DL CC can transmit a maximum of two codewords, the number of ul ack/NACK bits is at least two. In this case, in order to transmit ACK/NACK of data received through 5DL CCs through one ul CC, at least 10 bits of ACK/NACK are required. To support DTX status per DL CC, at least 12 bits are required for ACK/NACK transmission (5^ 3125 ^ 11.61 bits). Such a structure cannot transmit extended ACK/NACK information because ACK/NACK of at most 2 bits can be transmitted in the existing PUCCH format 1a/1 b. For convenience sake, although an example in which the amount of UCI information is increased due to CA is described, the amount of UCI information may be increased due to an increase in the number of antennas, the presence of backhaul subframes in a TDD system and a delay system, and the like. Similar to the case of ACK/NACK, when control information associated with a plurality of DL CCs is transmitted through one ul CC, the amount of control information to be transmitted increases. For example, in case that CQI for a plurality of DL CCs must be transmitted through a UL anchor (or primary) CC, CQI payload may be increased.

A DL primary CC may be defined as a DL CC linked with an UL primary CC. The links include an implicit link and a display link. In LTE, one DL CC and one UL CC are inherently paired. For example, with LTE pairing, a DL CC linked with an UL primary CC may be referred to as a DL primary CC. This can be considered an implicit link. Displaying the link indicates that the network has configured the link in advance and signaled through RRC or the like. In the display linkage, a DL CC paired with an UL primary CC may be referred to as a primary DL CC. The UL primary (or anchor) CC may be a UL CC transmitting PUCCH. Alternatively, the UL primary CC may be a UL CC transmitting UCI through a PUCCH or PUSCH. The DL primary CC may be configured by higher layer signaling. The DL primary CC may be a DL CC for which the UE performs initial access. DL CCs other than the DL primary CC may be referred to as UL secondary CCs. Similarly, UL CCs other than the UL primary CC may be referred to as UL secondary CCs.

LTE-a uses the concept of cells in order to manage radio resources. A cell is defined as a combination of downlink resources and uplink resources are not an indispensable component. Thus, a cell may consist of only downlink resources alone or may consist of a combination of downlink and uplink resources. If CA is supported, a link between a downlink resource carrier frequency (or DL CC) and an uplink resource carrier frequency (or UL CC) may be indicated by system information. A cell (or PCC) operating at a primary frequency may be referred to as a primary cell (PCell), and a cell (or SCC) operating at a secondary frequency (secondary frequency) may be referred to as a secondary cell (SCell). DL CCs and UL CCs may be referred to as DL cells and UL cells, respectively. In addition, the anchor (or primary) DL CC and the anchor (or primary) UL CC may be referred to as a DL PCell and an UL PCell, respectively. The PCell is used to perform an initial connection establishment process or a connection re-establishment process by the UE. The PCell may also indicate the cell indicated in the handover process. The SCell may be configured after RRC connection establishment is performed and may be used to provide additional radio resources. The PCell and SCell may be collectively referred to as a serving cell. Therefore, in case that the UE is in RRC _ CONNECTED state and is not configured with CA or does not support CA, there is only one serving cell including only the PCell. Conversely, in case the UE is in RRC _ CONNECTED state and configured with CA, there are one or more serving cells and each serving cell includes a PCell and all scells. For CA, the network may configure one or more scells for a UE supporting CA after starting an initial security activation process, in addition to a PCell initially configured in a connection establishment process.

The DL-UL pairing may be defined only in FDD. Since TDD uses the same frequency, DL-UL pairing cannot be defined. The DL-UL link can be determined from the UL link by means of the UL E-UTRA Absolute radio frequency channel number (EARFCN) information of SIB 2. For example, the DL-UL linkage may be acquired through SIB2 decoding during initial access and may be acquired through RRC signaling in other ways. Thus, there may be only SIB2 linking and no other DL-UL pairings are explicitly defined. For example, in the 5DL:1UL structure of fig. 28, DL CC #0 and UL CC #0 may have a SIB2 linking relationship and the remaining DL CCs may have a relationship with other UL CCs not configured for the UE.

To support a scenario such as fig. 28, a new scheme is required. Hereinafter, a PUCCH format (e.g., a plurality of a/N bits) for feedback of UCI in a communication system supporting carrier aggregation is referred to as a CA PUCCH format (or PUCCH format 3). For example, PUCCH format 3 is used to transmit a/N information (possibly including DTX status) corresponding to a PDSCH (or PDCCH) received at a multi-DL serving cell.

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

Fig. 29A shows a case where the PUCCH format according to the present embodiment is applied to the structure of PUCCH format 1 (normal CP). Referring to fig. 29A, the channel coding block performs channel coding on information bits a _0, a _1,. and a _ M-1 (e.g., a plurality of ACK/NACK bits) and generates coding bits (already coded bits or bits being coded) (or codewords) b _0, b _1,. and b _ N-1. M denotes the size of information bits, and N denotes the size of coded bits. The information bits include UCI, for example, a plurality of ACK/NACK bits for a plurality of data (or PDSCH) received through a plurality of DL CCs. Regardless of the kind/number/size of UCI configuring the information bits, the information bits a _0, a _1 … …, and a _ M-1 are jointly coded. For example, if the information bits include a plurality of ACK/NACK data for a plurality of DL CCs, channel coding is not performed with respect to each DL CC or each ACK/NACK bit, but is performed with respect to the entire bit information. Thus generating a single codeword. Channel coding may include, but is not limited to, simple repetition, simplex coding, reed-muller (RM) coding, punctured RM coding, tail-biting convolutional coding (TBCC), low density check (LDPC), and turbo coding. Although not shown, rate matching can be performed on the coded bits in consideration of a modulation order and an amount of resources. The rate matching function may be included in the channel coding block or may be performed using a separate functional block. For example, the channel coding block may perform (32,0) RM coding with respect to the plurality of control information to obtain a single codeword and perform circular buffer rate matching.

The modulator modulates the coded bits b _0, b _1 … …, and b _ N-1 and generates modulation symbols c _0, c _1 … …, and c _ L-1. L denotes the size of a modulation symbol. The modulation method is performed by changing the amplitude and phase of the transmitted signal. For example, the modulation methods include n-phase shift keying (n-PSK), n-Quadrature Amplitude Modulation (QAM) (where n is an integer greater than or equal to 2). More specifically, the modulation method may include binary PSK (bpsk), quadrature PSK (qpsk), 8-PSK, QAM, 16-QAM, 64-QAM, and the like.

The divider divides modulation symbols c _0, c _1 … …, and c _ L-1 into slots. The order/mode/method of dividing the modulation symbols into slots is not particularly limited. For example, the divider sequentially divides modulation symbols into slots (partial type) from the header. In this case, as shown, modulation symbols c _0, c _1,. and c _ L/2-1 may be divided into slot 0, and modulation symbols c _ L/2, c _ L/2+1,. and c _ L-1 may be divided into slot 1. The modulation symbols may be interleaved (or arranged) when divided into slots. For example, even-numbered modulation symbols may be divided into slot 0 and odd-numbered modulation symbols may be divided into slot 1. The order of the modulation process and the division process may be changed. Instead of dividing different coding bits into slots, the same coding bits may be configured to be repeated in slot units. In such a case, the divider may be omitted.

The DFT precompiler performs DFT precompilation (e.g., a 12-point DFT) with respect to the modulation symbols divided into time slots to generate a single carrier waveform. Referring to the drawing, modulation symbols c _0, c _1,. and c _ L/2-1DFT divided into slot 0 may be pre-coded into DFT symbols d _0, d _1,. and d _ L/2-1, and modulation symbols c _ L/2, c _ L/2+1,. and c _ L-1 divided into slot 1 are DFT pre-coded into DFT symbols d _ L/2, d _ L/2+1,. and d _ L-1. The DFT precoding may be replaced with another linear operation (e.g., Walsh precoding). The DFT precomplexer may be replaced with a CAZAC modulator. The CAZAC modulator modulates modulation symbols c _0, c _1, …, and c _ L/2-1 and c _ L/2, c _ L/2+1, …, and c _ L-1 divided into slots with corresponding sequences, and generates CAZAC modulation symbols d _0, d _1, …, d _ L/2-1 and d _ L/2, d _ L/2+1, …, and d _ L-1. For example, the CAZAC modulator includes a CAZAC sequence or a sequence for LTE computer-generated (CG)1 RB. For example, if the LTE CG sequence is r _0, …, and r _ L/2-1, the CAZAC modulation symbol may be d _ n-c _ n-r _ n or d _ n-conj (c _ n) r _ n.

The spreading block spreads the signal subjected to DFT at the SC-FDMA symbol level (time domain). The time domain spreading of the SC-FDMA symbol level is performed using a spreading code (sequence). The spreading codes include quasi-orthogonal codes and orthogonal codes. The quasi-orthogonal code may include, but is not limited to, a Pseudo Noise (PN) code. The orthogonal codes may include, but are not limited to, Walsh codes and DFT codes. Although the orthogonal codes are described as representative examples of spreading codes for the convenience of description of the present invention, the orthogonal codes are only exemplary and may be replaced with quasi-orthogonal codes. The maximum value of the spreading code size (or Spreading Factor (SF)) is limited by the number of SC-FDMA symbols used to transmit control information. For example, in the case of using four SC-FDMA symbols for transmission of control information in one slot, the (pseudo) orthogonal codes w0, w1, w2, and w3 having a length of 4 may be used in each slot. The SF means a spreading degree of control information and is associated with a multiplexing order of the UE or a multiplexing order of the antenna. The SF may become 1,2,3, 4 … according to the requirements of the system, and may be defined in advance between the BS and the UE or may be notified to the UE through DCI or RRC signaling. For example, in case one of SC-FDMA symbols for control information is punctured to transmit an SRS, a spreading code having a reduced SF value (e.g., SF-3 instead of SR-4) may be applied to the control information of the slot.

The signal generated through the above procedure may be mapped to subcarriers in a PRB, subjected to IFFT, and converted into a time domain signal. The time domain signal is attached with a CP and the generated SC-FDMA symbols are transmitted through an RF phase.

Each procedure will be described in detail assuming that ACK/NACK for 5DL CCs is transmitted. In case that two PDSCHs can be transmitted per DL CC, the number of ACK/NACK bits may be 12 if the DTX status is included. Considering QPSK modulation and time spreading with SF-4, the coding block size (after rate matching) may be 48 bits. The coded bits may be modulated into 24 QPSK symbols, and 12 symbols of the generated QPSK symbols are divided into each slot. In each slot, 12 QPSK symbols are converted into 12 DFT symbols through a 12-point DFT operation. In each slot, 12 DFT symbols are spread to four SC-FDMA symbols and mapped using a spreading code having SF-4 in the time domain. Since 12 bits are transmitted through [2 bits × 12 subcarriers +8 SC-FDMA symbols ], the coding rate is 0.0625(═ 12/192). In case of SF-4, up to four UEs may be multiplexed per PRB.

The signal processing procedure described with reference to fig. 29A is merely exemplary, and the signal mapped to the PRB in fig. 29A may be obtained using various equivalent signal processing procedures. A signal processing routine equivalent to fig. 29A will be described with reference to fig. 29B to 29F.

Fig. 29B differs from fig. 29A in the order of DFT precompilers and spread blocks. In fig. 29A, since the function of the spreading block is equal to the multiplication of the DFT symbol sequence output from DFT precoding and a specific constant at the SC-FDMA symbol level, the value of the signal mapped to the SC-FDMA symbol is the same even when the order of the DFT precoding and spreading blocks is changed. Accordingly, the signal processing procedure for PUCCH format 3 may be performed in the order of channel coding, modulation, division, spreading, and DFT precoding. In such a case, the division processing and the expansion processing can be performed by one functional block. For example, modulation symbols may be spread at the SC-FDMA symbol level while alternatively being divided into slots. As another example, when dividing modulation symbols into slots, the modulation symbols may be duplicated to fit the size of the spreading code, and elements of the modulation symbols and the spreading code may be multiplied in a one-to-one correspondence. Thus, the modulation symbol sequence generated at each slot is spread over a plurality of SC-FDMA symbols at the SC-FDMA symbol level. Thereafter, complex symbols corresponding to each SC-FDMA symbol are DFT-precompiled in SC-FDMA symbol units.

Fig. 29C differs from fig. 29A in the order of the modulator and the divider. Accordingly, the signal processing procedure for PUCCH format 3 may be performed in an order of joint channel coding and division at a subframe level and modulation, DFT precoding, and spreading at each slot level.

Fig. 29D differs from fig. 29C in the order of DFT precompilers and spreading blocks. As described above, since the function of the spreading block is equal to the DFT symbol sequence output from the DFT precompler multiplied by a specific constant at the SC-FDMA symbol level, the value of the signal mapped to the SC-FDMA symbol is the same even when the order of the DFT precomplexed and spreading blocks is changed. Thus, the signal processing procedure for PUCCH format 3 may be performed by joint channel coding and division at the subframe level and modulation at each slot level. The modulation symbol sequence generated at each slot is spread to a plurality of SC-FDMA symbols at the SC-FDMA symbol level, and the modulation symbol sequence corresponding to each SC-FDMA symbol is DFT-precompiled in SC-FDMA symbol units. In such a case, the modulation processing and the spreading processing can be performed by one functional block. For example, when modulating coded bits, the generated modulation symbols can be directly spread at the SC-FDMA symbol level. As another example, when modulating coded bits, modulation symbols are copied to be suitable for the size of a spreading code, and the modulation symbols and elements of the spreading code may be multiplied in one-to-one correspondence.

Fig. 29E shows a case where PUCCH format 3 according to the present embodiment is applied to the structure of PUCCH format 2 (normal CP), and fig. 29F shows a case where PUCCH format 3 according to the present embodiment is applied to the structure of PUCCH format 2 (extended CP). The basic signal processing procedures are equivalent to those described with respect to fig. 29A to 29D. Since the structure of PUCCH format 2 of the existing LTE is reused, the number/position of UCI SC-FDMA symbols and RSSC-FDMA symbols in PUCCH format 3 is different from that of fig. 29A.

Table 14 shows the positions of RS SC-FDMA symbols in PUCCH format 3. It is assumed that the number of SC-FDMA symbols in a slot is 7 (indexes 0 to 6) in the case of a normal CP and 6 (indexes 0 to 5) in the case of an extended CP.

TABLE 14

Here, the RS can reuse the structure of the existing LTE. For example, the RS sequence may be defined using a cyclic shift of the base sequence (see equation 1).

Since SF-5, the multiplexing capacity of the UCI data part is 5 according to the cyclic shift interval △_shift ^PUCCHThe multiplexing capacity of the RS part is determined. More particularly, the multiplexing capacity of the RS part isFor example, at △_shift ^PUCCH＝1、△_shift ^PUCCH2, and △_shift ^PUCCHIn the case of 3, the multiplexing capacity is 12, 6 and 4, respectively in fig. 29E to 29F, since SF is 5, the multiplexing capacity of the UCI data part is 5, and at △_shift ^PUCCHIn the case of 3, the multiplexing capacity of the RS section is 4. Therefore, the entire multiplexing capacity is set to the smaller capacity 4 of the two capacities.

Fig. 30 shows a structure of PUCCH format 3 with increased multiplexing capacity. Referring to fig. 30, SC-FDMA symbol horizontal spreading may be applied to an RS portion in a slot. Thus, the multiplexing capacity of the RS section is doubled. I.e. even inIn case (2), the multiplexing capacity of the RS part becomes 8, and the multiplexing capacity of the UCI data part is not lost. Orthogonal code coverage for RS includes, but is not limited to, walsh cover [ y1y2]＝[1 1]，[1-1]Or a linear conversion form (e.g., [ j j ]]，[j–j]，[1j]，[1–j]Etc.). y1 is applied to the first RSSC-FDMA symbol in the slot, and y2 is applied to the second RS SC-FDMA symbol in the slot.

Fig. 31 shows a structure of another PUCCH format 3 having an increased multiplexing capacity. If slot-level hopping is not performed, spreading or covering (e.g., Walsh covering) may be additionally performed in slot units to double the multiplexing capacity. In the case of performing slot-level frequency hopping, if Walsh covering is applied in slot units, orthogonality is impaired due to a difference between channel conditions of slots. The slot-unit spreading code (e.g., orthogonal code cover) for the RS includes, but is not limited to, Walsh cover of [ x1x2] < 11 >, [1-1] or a linear-converted form thereof (e.g., [ j j ] [ j-j ], [1j ] [ 1-j ], etc.). X1 is applied to the first slot and x2 is applied to the second slot. Although the case where slot-level spreading (or covering) is performed and then spreading (or covering) is performed at the SC-FDMA symbol level is shown in the drawing, the order may be changed.

The signal processing procedure of the PUCCH format 3 will be described using the equation. For convenience, assume that a length of 5OCC is used (e.g., fig. 29E to 31).

First, a bit block b (0) is coded using a UE-specific scrambling sequence_bit-1) scrambling. Bit block b (0),. -, b (M)_bit-1) may correspond to coding bits b _0, b _1, …, b _ N-1 of fig. 29A. Bit block b (0),. -, b (M)_bit-1) may include at least one of ACK/NACK bits, CSI bits, and SR bits. The scrambled bit block may be generated according to the following equation

Equation 10

Here, c (i) denotes a scrambling sequence. c (i) comprises a pseudo-random sequence defined by a gold sequence of length 31 and may be generated according to the following equation. mod denotes a modulo operation.

Equation 11

c(n)＝(x₁(n+N_C)+x₂(n+N_C))mod2

x₁(n+31)＝(x₁(n+3)+x₁(n))mod2

x₂(n+31)＝(x₂(n+3)+x₂(n+2)+x₂(n+1)+x₂(n))mod2

Wherein N is_C1600. The first m-sequence is initialized to x₁(0)＝1,x₁(n) ═ 0, n ═ 1,2, 30. The second m-sequence is initializedC may be set whenever a subframe starts_initIs initialized ton_sIndicating the slot number in the radio frame,denotes a physical layer cell identity, and n_RNTIRepresenting a radio network temporary identifier.

Modulating scrambled bit blocksAnd generates a complex modulation symbol block d (0)_symb-1). When the QPSK modulation is performed,complex modulation symbol block d (0) ·_symb-1) modulation symbols c _0, c _1 … … c _ N-1 corresponding to fig. 29A.

Using orthogonal sequencesSpreading a complex modulation symbol block d (0) in a block-wise manner_symb-1). Generated according to the following equationA complex symbol set. The frequency division/expansion process of fig. 29B is performed according to the following equation. Each complex symbol set corresponds to an SC-FDMA symbol and has(e.g., 12) complex modulation values.

Equation 12

Wherein,andcorresponding to the number of SC-FDMA symbols used for PUCCH transmission at slot 0 and slot 1, respectively. In the case of using the normal PUCCH format 3,in case of using the shortened PUCCH format 3,and andthe orthogonal sequences applied to slot 0 and slot 1 are indicated separately and are given by table 15. n is_ocIndicating an orthogonal sequence index (or orthogonal code index).Representing a floor function.Can bec (i) may be given by equation 11 and may be initialized at the beginning of each radio frame

Table 15 shows the sequence index n_ocAnd orthogonal sequences

Watch 15

In Table 15, the following equations were generatedOrthogonal sequences (or codes).

Equation 13

Indexing by resourcesThe resources for PUCCH format 3 are identified. E.g. n_ocCan be May be indicated by a Transmission Power Control (TPC) field of the SCell PDCCH. More specifically, n for each slot can be given by the following equation_oc。

Equation 14

Wherein n is_oc,0Indicating a sequence index value n for slot 0_ocAnd n is_oc,1Indicating a sequence index value n for slot 1_oc. In the case of the normal PUCCH format 3,in the case of the shortened PUCCH format 3,and

the set of block spread complex symbols may be cyclically shifted according to the following equation.

Equation 15

Wherein n is_sDenotes the slot number in the radio frame and/denotes the SC-FDMA symbol number within the slot. Is defined by equation 12

Each circularly shifted complex symbol set is transformed-precompiled according to the following equation. As a result, a complex symbol block is generated

Equation 16

Complex symbol block after power controlMapping to physical resources. The PUCCH uses one resource block in each slot of the subframe. In the context of a resource block,resource elements (k, l) mapped to antenna ports p that are not used for RS transmission (see table 14). The mapping is performed in ascending order of the first slot, k and l of the subframe. k denotes a subcarrier index and l denotes an SC-FDMA symbol index in a slot.

Next, UL transmission mode configuration will be described. The transmission mode for the PUCCH can be roughly divided into two modes. One is a single antenna transmission mode and the other is a multiple antenna transmission mode. The single antenna transmission mode refers to a method of transmitting a signal through a single antenna when the UE transmits the PUCCH or a method of enabling a receiver (e.g., BS) to recognize a signal transmitted through a single antenna. In the multi-antenna transmission mode, the UE may transmit signals through multiple antennas simultaneously using a virtualization scheme (e.g., PVS, antenna selection, CDD, etc.). The multi-antenna transmission mode instructs the UE to transmit signals to the BS through multiple antennas using a transmission diversity or MIMO scheme. As a transmission diversity scheme used at this time, Spatial Orthogonal Resource Transmission Diversity (SORTD) may be used. In this specification, the multi-antenna transmission mode is referred to as SORTD mode for convenience unless otherwise specified.

Fig. 32 shows a signal processing block/program for SORTD. The basic procedure excluding the multi-antenna transmission processing is equal to the procedure described with reference to fig. 29 to 31. Referring to fig. 32, modulation symbols c _0, …, c _23 are DFT-precoded and transmitted through resources (e.g., OCs, PRBs, or a combination thereof) given on a per antenna port basis. In the present example, although one DFT operation is performed for a plurality of antenna ports, the DFT operation may be performed on an antenna-by-antenna port basis. In addition, although the DFT-precompiled symbols d _0, …, d _23 are transmitted through the second OC/PRB in a overwritten state, a modified form (e.g., a complex conjugate or a scaled scale) of the DFT-precompiled symbols d _0, …, d _23 may be transmitted through the second OC/PRB. For example, to ensure 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⁾]And [ OC⁽⁰⁾≠OC⁽¹⁾；PRB⁽⁰⁾≠PRB⁽¹⁾]Is possible. Here, the numbers in the superscript denote antenna port numbers or values corresponding thereto.

Fig. 33 is a diagram illustrating SORTD operation. Referring to fig. 33, the UE acquires a first resource index and a second resource index (S3310). The resource index (or resource value) indicates a PUCCH resource index (or PUCCH resource value), and preferably a PUCCH format 3 resource index (or PUCCH format 3 resource value). Step S3310 may include a plurality of steps that are sequentially performed. The method of acquiring the first resource index and the second resource index will be described in detail below. Thereafter, the UE transmits a PUCCH signal using a PUCCH resource corresponding to the first resource index through the first antenna (port) (S3320). The UE transmits a PUCCH signal using a PUCCH corresponding to the second resource index through the second antenna (port) (S3330). Steps S3320 and S3330 are performed on the same subframe.

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

As described with reference to fig. 32 to 33, multi-antenna (port) transmission (e.g., SORTD) requires orthogonal resources greater in number than the amount of resources in single-antenna (port) transmission. For example, 2Tx SORTD transmission requires orthogonal resources, the number of which is twice the amount of resources in single antenna (port) transmission. Therefore, the antenna (port) transmission mode is associated with the number of UEs multiplexed in the resource region for PUCCH, i.e., multiplexing capacity. Therefore, the BS needs to flexibly configure an antenna (port) transmission mode according to the number of UEs communicating with the BS. For example, if the number of UEs accepted through the BS is small, a multi-antenna (port) transmission mode (e.g., SORTD mode) using a plurality of resources may be configured with respect to each UE and, if the number of UEs accepted through the BS is large, a single-antenna (port) transmission mode using a single resource may be configured. An antenna (port) transmission mode for PUCCH transmission may be configured through RRC signaling. In addition, antenna (port) transmission modes may be independently configured on a per PUCCH format basis.

Hereinafter, the present invention proposes various methods of allocating resources in PUCCH format 3 in an environment using a plurality of resources for multi-antenna (port) transmission (see step S3310 of fig. 33). For example, if 2Tx SORTD is applied to PUCCH format 3, since two orthogonal resources are required, an allocation rule of the two orthogonal resources is required.

First, single antenna (port) transmission requiring one orthogonal resource will be described. The resource allocation for PUCCH format 3 is based on explicit resource allocation. More specifically, the UE may be explicitly allocated PUCCH resource value candidates (or PUCCH resource value candidate set) for PUCCH format 3 in advance by higher layer (e.g., RRC) signaling (e.g.,). Thereafter, the BS may transmit an ACK/NACK (A/N) resource indicator (ARI) (HARQ-ACK resource value) to the UE, and the UE may determine a PUCCH resource value for actual PUCCH transmission through the ARIPUCCH resource valuesIs mapped to PUCCH resources (e.g., OC or PRB). The ARI may be used to directly indicate which PUCCH resource value candidate (or PUCCH resource value candidate set) previously provided by the higher layer is to be used. In an implementation, the ARI may indicate (by higher layers) an offset value for signaling PUCCH resource values. The Transmission Power Control (TPC) of the PDSCH-scheduling pdcch (scelllpdcch) transmitted on the SCell may be reused as the ARI. The TPC field of the PDSCH-scheduling pdcch transmitted on the PCell (PCell pdcch) may be used for PUCCH power control for its original purpose. In the case of 3GPP release 10, since the PDSCH of the PCell does not allow cross-carrier scheduling from the SCell, receiving the PDSCH only on the PCell may be equivalent to receiving the PDCCH only on the PCell.

More specifically, if PUCCH resources for a/N are allocated by RRC in advance, resources for actual PUCCH transmission may be determined as follows.

-PDCCH corresponding to PDSCH on SCell (or PDCCH on SCell corresponding to PDSCH) indicates one of PUCCH resources configured by RRC using ARI (HARQ-ACK resource value).

-if no PDCCH corresponding to PDSCH on SCell (or PDCCH on SCell corresponding to PDSCH) is detected and PDSCH is received on PCell, then any of the following methods is applicable:

use implicit a/N PUCCH resources according to existing 3GPP release 8 (i.e., PUCCH format 1a/1b resources obtained using the lowest CCE configuring the PDCCH).

A PDCCH corresponding to a PDSCH on the PCell (or a PDCCH on the PCell corresponding to the PDSCH) indicates one of PUCCH resources configured by RRC using ARI (HARQ-ACK resource value).

Assume that all PDCCHs corresponding to PDSCH on SCell (or PDCCHs on SCell corresponding to PDSCH) have the same ARI (HARQ-ACK resource value).

ARI (HARQ-ACK resource value) may have X bits, and X may be 2 if the TPC field of the SCell PDCCH is reused. For convenience, assume that X is 2.

Hereinafter, a resource allocation method for supporting various antenna (port) transmission modes if control information is transmitted using PUCCH format 3 will be described.

For example, the UE may be allocated four orthogonal resources for PUCCH format 3, e.g., PUCCH resource values, through RRC signaling (e.g., four RRC signals) Andin addition, the UE may be allocated one set consisting of four PUCCH resource valuesAs an RRC signal. Thereafter, the UE may detect the PDCCH signal and receive the PDSCH signal corresponding thereto. At least one of a PDCCH signal and a PDSCH signal may be received through the SCell. Thereafter, the UE may determine a PUCCH resource value for actual PUCCH transmission from a bit value of ARI (HARQ-ACK resource value) in the PDCCH signalThe determined PUCCH resource value is mapped to a PUCCH resource (e.g., OC or PRB). UCI (e.g., HARQ-ACK for PDSCH) is transmitted through a network (e.g., a BS or a Relay Node (RN)) using PUCCH resources to which PUCCH resource values are mapped.

TABLE 16

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

If it is assumed that ARI (HARQ-ACK resource value) is transmitted using the TPC field of the SCell PDCCH, ARI or PUCCH resource value associated with ARI is not recognized if the UE receives PDSCH only on PCell (PDCCH is received only on PCell). Therefore, if an event occurs, a candidate approach (fall-back) using the existing 3GPP release 8/9PUCCH resource and release 8/9PUCCH format 1a/1b may be applied.

Next, a method of allocating a plurality of orthogonal resources for transmission diversity (e.g., SORTD) will be described. For convenience, it is assumed that two orthogonal resources are used.

In the following description, resources (sets) required for multi-antenna port transmission may be allocated in consideration of UE performance or an actual transmission mode of the UE. For example, if the UE supports multi-antenna port transmission, the BS may previously allocate a second resource (set) for multi-antenna port transmission and a first resource (set) for single-antenna port transmission. Thereafter, the UE may use the first resource (set) in the single antenna port transmission mode and the first resource (set) and the second resource (set) in the multiple antenna port transmission mode. In addition, the BS may allocate a second resource (set) for multi-antenna port transmission in consideration of the current transmission mode of the UE. For example, the BS may allocate a second resource (set) for the UE after instructing the UE to operate in the multi-antenna port transmission mode. That is, the UE may be additionally configured with the first resource (set) only after configuring the multi-antenna port transmission mode in a state where the first resource (set) is allocated.

For example, the UE may basically receive allocation information indicating a plurality of PUCCH resources for antenna port p0, and may additionally receive allocation information indicating a plurality of PUCCH resources for antenna port p1 even when multi-antenna port transmission is possible or a multi-antenna port transmission mode is configured.

In such a case, the UE may be allocated eight orthogonal resources for PUCCH format 3, e.g., PUCCH resource values, through RRC signals (e.g., eight RRC signals) Andin addition, the UE can be allocated one set consisting of eight PUCCH resource values through one RRC signalThereafter, the UE may detect a PDCCH signal and a PDSCH signal corresponding thereto.At least one of a PDCCH signal and a PDSCH signal may be received through the SCell. Thereafter, the UE may determine a PUCCH resource value for actual PUCCH transmission from a bit value of ARI (HARQ-ACK resource value) in the PDCCH signalp represents an antenna port number or a value corresponding thereto. The determined PUCCH resource value is mapped to a PUCCH resource (e.g., OC or PRB). The UCI (e.g., HARQ-ACK for PDSCH) is transmitted through a network (e.g., a BS or a Relay Node (RN)) using PUCCH resources to which PUCCH resource values are mapped.

In the multi-antenna port transmission mode, one ARI is used to indicate a plurality of PUCCH resource values. A plurality of PUCCH resource values indicated by the ARI are mapped to PUCCH resources for respective antenna ports. Thus, the ARI may indicate one or more PUCCH resource values according to whether the antenna port transmission mode is a single antenna port mode or a multi-antenna port mode. The method described above is shown in table 17.

TABLE 17

As another example, the UE may be allocated four orthogonal resources (e.g., PUCCH resource values) as follows through RRC signaling on an per antenna port basis. Thereafter, the UE may detect the PDCCH signal and receive the PDSCH signal corresponding thereto. At least one of a PDCCH signal and a PDSCH signal may be received through the SCell. Thereafter, the UE may determine a final PUCCH resource value to be used on an antenna port basis according to a bit value of ARI (HARQ-ACK resource value) in the PDCCH signalDeterminedThe PUCCH resource value is mapped to a PUCCH resource (e.g., OC or PRB) for each antenna port. p indicates an antenna port number or a value corresponding thereto. This method is shown in table 18.

-->For antenna port p0 (e.g., p0 ═ 0)

–->For antenna port p1 (e.g., p1 ═ 1).

But not limited thereto, as described above, the UE may basically receive allocation information indicating a plurality of PUCCHs for the antenna port p0, and may additionally receive allocation information indicating a plurality of PUCCH resources for the antenna port p1 only when multi-antenna port transmission is possible or a multi-antenna transmission mode is configured.

Watch 18

If multi-antenna port transmission is possible or a multi-antenna port transmission mode is configured, the UE may be basically allocated four orthogonal resources for single-antenna port transmission, e.g., PUCCH resource values, through one RRC signalAnd may be allocated eight orthogonal resources for two antenna ports, e.g., PUCCH resource values, by one RRC signalThe UE may determine a final PUCCH resource value to use based on each antenna port according to the bit value of the ARIAnd PUCCH resources corresponding thereto. The above method is shown in table 19.

Watch 19

Tables 17 to 19 show the case where part p ═ p0 of the allocation of PUCCH resource values for multiple antenna ports is configured to be equal to in a single antenna port. That is, a nested structure is assumed in tables 17 to 19. Thus, one common table can support both single antenna port transmission and multiple antenna port transmission.

With reference to table 18, the nesting structure will be described in more detail. In a nested configuration, a common table may be used. Table 20 shows a common table for single antenna port transmission modes and multiple antenna port transmission modes.

Watch 20

If the UE is configured to a single antenna port transmission mode associated with PUCCH transmission, table 20 may be analyzed as table 21. Thus, if the UE is configured in a single antenna port transmission mode, the PUCCH resource value indicated by the ARIFinally mapped to one PUCCH resource for a single antenna port (e.g., p0)

TABLE 21

If the UE is configured into a multi-antenna port transmission mode associated with PUCCH transmission, table 20 may be analyzed as table 22. Thus, if the UE is configured in a multi-antenna port transmission mode, the PUCCH resource value indicated by the ARIFinally mapped to multiple PUCCH resources for multiple antenna ports (e.g., p0 and p1)And

TABLE 22

Another example, SORTD, will be described as allocating a plurality (e.g., two) of orthogonal resources for transmission diversity. For example, assume that a UE is allocated four orthogonal resources for PUCCH format 3 by RRC signals (e.g., four RRC signals), e.g., PUCCH resource valuesAndalternatively, it may be assumed that the UE is allocated one set consisting of four resource values through one RRC signalAs described above, the UE may determine the final PUCCH resource to be used on an antenna port basis according to the bit value of the ARIBased on the above assumptions, according to the present example, four PUCCH resource values may be divided into groupsAnd groupTwo groups of (1). In such a case, one bit of the front part and one bit of the rear part of the ARI may be used to indicate resources for the respective group. For example, assume that the ARI is composed of b0 and b1 (each of b0 and b1 is 0 or 1). In this case, b0 indicates which PUCCH resource value is used in group 0, and b1 indicates which PUCCH resource value is used in group 1. The PUCCH resource value selected from group 0 may be mapped to a PUCCH resource (e.g., OC or PRB) for antenna port p0, and the resource selected from group 1 may be mapped to a PUCCH resource (e.g., OC or PRB) for antenna port p 1.

The above method is shown in table 23. Although the method is applicable to allocation of four PUCCH resource values by RRC signallingAndbut the method is applicable to the case where more orthogonal resources are used.

TABLE 23

Table 23 shows a case where signals are received through two RRC signals per individual antenna (four in total in the case of 2 Tx), and each bit of ARI indicates a resource for each antenna port. Table 24 shows the results of the daysLine port p0 allocationAnd allocated to antenna port p1The case (1).

Watch 24

As another example of the present invention, a method of downlink assignment index in case of TDD CA will be described. The DAI is a value obtained by counting scheduled PDCCHs in a time domain, and is extensible for a cell (or CC) domain in CA. In case of PUCCH format 3, DAI may be used in the present invention because DAI value is not necessary.

For example, PUCCH format 3 resources for a first antenna port (p ═ p0) may be allocated/determined using ARI, and PUCCH format resources for a second antenna port (p ═ p1) may be allocated/determined using DAI. The PDCCH of the serving cell may be restricted to have the same DAI value in order to prepare for a case where the PDCCH of at least one serving cell fails. If the PDSCH is scheduled only on the PCell, the UE may ignore the DAI value of the PCellPDCCH corresponding to the PDSCH, return to the single antenna port mode, and transmit the PUCCH.

For convenience, it is assumed that the UE is previously allocated four orthogonal resources, e.g., PUCCH resource values, through RRC signalingAndthereafter, if it is assumed that the UE reception includes ARI ═ 00]And DAI ═ 10]The PDCCH signal of (1).

-->For antenna port p0 (e.g., p0 ═ 0)

–->For antenna port p1 (e.g., p1 ═ 1)

The above method is shown in table 25.

TABLE 25

In addition, the same method is applicable to a case where the UE is previously allocated eight orthogonal resources, for example, PUCCH resource values, through RRC signaling For example, ARI values 00, 01, 10, and 11 for antenna port 0 indicateAndand DAI values 00, 01, 10, and 11 for antenna port 1 indicate And

as another example, a UE may be allocated four orthogonal resources by RRC signaling on an per antenna port basis as follows.

–->For antenna port p0 (e.g., p0 ═ 0)

-->For antenna port p1 (e.g., p1 ═ 1)

At this time, ARI values of 00, 01, 10 and 11 indicateAndand DAI values 00, 01, 10, and 11 indicate

Fig. 34 shows a schematic diagram of a BS and a UE applicable to the present invention.

Referring to fig. 34, the wireless communication system includes a BS 110 and a UE 120. BS 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 proposed by the present invention. The memory 114 is connected to the processor 112 to store various information associated with the operation of the processor 112. The RF unit 116 is connected to the processor 112 to transmit and/or receive RF signals. UE 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 to the processor 122 to store various information related to the operation of the processor 122. The RF unit 126 is connected to the processor 122 to transmit and/or receive RF signals. BS 110 and/or UE 120 may have a single antenna or multiple antennas.

The foregoing embodiments are achieved by combining structural elements and features of the present invention in a predetermined form. Unless otherwise specified, each of the structural elements or features should be selectively considered. Each of the structural elements or features may be implemented without combining other structural elements or features. Also, some structural elements or features are combined with each other to constitute the embodiments of the present invention. To change the order of operations described above in the embodiments of the present invention. Some structural elements or features of one embodiment may be included in another embodiment or may be replaced by corresponding structural elements or features of another embodiment. Further, it is apparent that some claims referring to specific claims may be combined with another claims referring to the other claims other than the specific claims to constitute the embodiment or add new claims by way of modification after the application is filed.

The embodiments of the present invention have been described based on data transmission and reception between a base station and a user equipment. Depending on the circumstances, certain operations that have been described as being performed by the base station may be performed by an upper node of the base station. In other words, it will be apparent that a base station or a network node other than the base station can perform various operations for communicating with a user equipment in a network including a plurality of network nodes and the base station. A base station may be replaced by terms such as fixed station, node B, eNodeB (eNB), access point. Also, the user equipment may be replaced with terms such as a Mobile Station (MS) and a mobile subscriber station (MSs).

Embodiments of the invention according to the present invention can be implemented by various means, such as hardware, firmware, software, or a combination thereof. If the embodiments according to the present invention are implemented by hardware, the embodiments according to the present invention can be implemented by 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 (FPGAs), processors, controllers, micro-controllers, microprocessors, or the like.

If the embodiment according to the present invention is implemented by firmware and software, the embodiment of the present invention may be implemented by a module, a program, or a function that performs the above-described functions or operations. The software codes may be stored in memory units and then driven by processors. The storage unit may be located inside or outside the memory to transmit and receive data to and from the processor through various known means.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

[ Industrial Applicability ]

The present invention can be applied to a terminal, a BS, or other devices in a wireless mobile communication system. More specifically, the present invention is applicable to a method and apparatus for transmitting uplink control information.

Claims (8)

1. A method of transmitting control information by a communication device using a Physical Uplink Control Channel (PUCCH) format 3 in a radio communication system, the method comprising:

receiving a radio control resource (RRC) message comprising a set of PUCCH resources for the PUCCH format 3;

detecting a Physical Downlink Control Channel (PDCCH) signal;

receiving a Physical Downlink Shared Channel (PDSCH) signal corresponding to the PDCCH signal on a secondary cell (SCell); and

determining one or more PUCCH resources based on a 2-bit value of a Transmit Power Control (TPC) field of the PDCCH signal,

wherein if a single antenna port transmission mode is configured for PUCCH format 3 transmission, the RRC message does not have a set of additional PUCCH resources for the PUCCH format 3 and the 2-bit value of the TPC field is mapped to one PUCCH resource as shown in Table 1, and

wherein, if a multi-antenna port transmission mode is configured for the PUCCH format 3 transmission, the RRC message further includes the set of additional PUCCH resources and the 2-bit value of the TPC field is mapped to two PUCCH resources as shown in Table 2:

table 1: single antenna port transmission mode

Table 2: two antenna port transmission mode

2. The method of claim 1, further comprising transmitting the control information using the one or more determined PUCCH resources,

wherein the control information comprises a hybrid automatic repeat request acknowledgement (HARQ-ACK) for the PDSCH signal.

3. A communication apparatus for transmitting control information using a Physical Uplink Control Channel (PUCCH) format 3 in a radio communication system, the communication apparatus comprising:

a Radio Frequency (RF) unit; and

a processor configured to: receiving a radio control resource (RRC) message comprising a set of PUCCH resources for the PUCCH format 3; detecting a Physical Downlink Control Channel (PDCCH) signal; receiving a Physical Downlink Shared Channel (PDSCH) signal corresponding to the PDCCH signal on a secondary cell (SCell); and determining one or more PUCCH resources based on a 2-bit value of a Transmit Power Control (TPC) field of the PDCCH signal,

wherein if a single antenna port transmission mode is configured for PUCCH format 3 transmission, the RRC message does not have a set of additional PUCCH resources for the PUCCH format 3 and the 2-bit value of the TPC field is mapped to one PUCCH resource as shown in Table 1, and

wherein, if a multi-antenna port transmission mode is configured for the PUCCH format 3 transmission, the RRC message further includes the set of additional PUCCH resources and the 2-bit value of the TPC field is mapped to two PUCCH resources as shown in Table 2:

table 1: single antenna port transmission mode

Table 2: two antenna port transmission mode

4. The communication apparatus of claim 3, wherein the processor is further configured to transmit the control information using the one or more determined PUCCH resources, and the control information comprises a hybrid automatic repeat request acknowledgement (HARQ-ACK) for the PDSCH signal.

5. A method of receiving control information by a communication device using a Physical Uplink Control Channel (PUCCH) format 3 in a radio communication system, the method comprising:

transmitting a radio control resource (RRC) message comprising a set of PUCCH resources for the PUCCH format 3;

transmitting a Physical Downlink Control Channel (PDCCH) signal; and

transmitting a Physical Downlink Shared Channel (PDSCH) signal corresponding to the PDCCH signal on a secondary cell (SCell); and

determining one or more PUCCH resources based on a 2-bit value of a Transmit Power Control (TPC) field of the PDCCH signal,

wherein if a single antenna port transmission mode is configured for PUCCH format 3 transmission, the RRC message does not have a set of additional PUCCH resources for the PUCCH format 3 and the 2-bit value of the TPC field is mapped to one PUCCH resource as shown in Table 1, and

wherein, if a multi-antenna port transmission mode is configured for the PUCCH format 3 transmission, the RRC message further includes the set of additional PUCCH resources and the 2-bit value of the TPC field is mapped to two PUCCH resources as shown in Table 2:

table 1: single antenna port transmission mode

Table 2: two antenna port transmission mode

6. The method of claim 5, further comprising receiving the control information using the one or more determined PUCCH resources,

wherein the control information comprises a hybrid automatic repeat request acknowledgement (HARQ-ACK) for the PDSCH signal.

7. A communication apparatus for receiving control information using a Physical Uplink Control Channel (PUCCH) format 3 in a radio communication system, comprising:

a Radio Frequency (RF) unit; and

a processor configured to: transmitting a radio control resource (RRC) message comprising a set of PUCCH resources for the PUCCH format 3; transmitting a Physical Downlink Control Channel (PDCCH) signal; transmitting a Physical Downlink Shared Channel (PDSCH) signal corresponding to the PDCCH signal on a secondary cell (SCell); and determining one or more PUCCH resources based on a 2-bit value of a Transmit Power Control (TPC) field of the PDCCH signal,

wherein if a single antenna port transmission mode is configured for PUCCH format 3 transmission, the RRC message does not have a set of additional PUCCH resources for the PUCCH format 3 and the 2-bit value of the TPC field is mapped to one PUCCH resource as shown in Table 1, and

wherein, if a multi-antenna port transmission mode is configured for the PUCCH format 3 transmission, the RRC message further includes the set of additional PUCCH resources and the 2-bit value of the TPC field is mapped to two PUCCH resources as shown in Table 2:

table 1: single antenna port transmission mode

Table 2: two antenna port transmission mode

8. The communication device of claim 7, wherein the processor is further configured to receive the control information using the one or more determined PUCCH resources, and the control information comprises a hybrid automatic repeat request acknowledgement (HARQ-ACK) for the PDSCH signal.