KR20170017225A - Apparatus and method for dynamic resource allocation for uplink control channel - Google Patents

Abstract

The present invention relates to a method and an apparatus for dynamic resource allocation for an uplink control channel in a wireless communication system. A method by which a terminal in the wireless communication system transmits uplink control information includes: a step of receiving from a base station first information indicating a first resource region that can be used by a physical uplink control channel (PUCCH); a step of receiving from the base station second information that is used for a determination of a second resource region where the PUCCH is allocated; and a step of mapping the uplink control information in the second resource region determined based on the first information and the second information and performing transmission to the base station. The second resource region is included in the first resource region, the first information is set by a higher layer, and the second information can be dynamically indicated via downlink control information (DCI).

Description

[0001] APPARATUS AND METHOD FOR DYNAMIC RESOURCE ALLOCATION FOR UPLINK CONTROL CHANNEL [0002]

The present invention relates to a wireless communication system, and more particularly, to a recording medium in which a method, apparatus, software, or software for dynamically allocating resources for an uplink control channel in a wireless communication system is stored.

A hybrid automatic retransmission request (HARQ) -Acknowledgment information, i.e., HARQ-ACK information indicating whether or not the data transmitted from the transmitting end in the receiving end has been successfully decoded by the receiving end, To the transmitting end or to the transmitting end. For example, an error detection code (for example, a CRC (Cyclic Redundancy Check)) may be added to the downlink data transmitted from the base station to the mobile station in units of codewords, (ACK) / negative acknowledgment (NACK) information to the base station through the uplink channel. Similar to the transmission of the uplink acknowledgment information in response to the downlink data transmission, an acknowledgment of the uplink data transmitted from the terminal to the base station may be transmitted from the base station to the terminal through the downlink channel.

A Rank Indicator (RI), a Precoding Matrix Index (PMI), and the like are information that the receiving end feeds back to the transmitting end in a wireless communication system to which a multi-input multiple-output (MIMO) ), Channel quality information (CQI), and the like are defined. These feedback information may collectively be referred to as channel state information (CSI). For example, the UE can feedback the RI and / or PMI of the UE to the BS based on the measurement result of the downlink channel from the BS. Here, the RI preferred by the UE corresponds to a downlink transmission rank value that can have the highest data rate if it is used by a base station in a given channel state. Also, the PMI preferred by the UE is an index indicating a precoding matrix suitable for the channel conditions measured by the UE in the codebook, which is a set of precoding matrix candidates, and the codebook can be predetermined and shared between the BS and the UE. Also, the CQI is calculated based on the RI and / or the PMI reported by the UE and may correspond to a modulation and coding scheme (MCS) level applied to the downlink transmission. That is, the CQI may indicate an MCS level that provides an acceptable degree of packet error rate if a predetermined rank value and precoder information are applied. The reporting time of the CSI of the terminal and the frequency range (or frequency resolution) to be measured can be controlled by the base station. Regarding the time of reporting, periodic CSI reporting and aperiodic CSI reporting may be supported. In general, periodic CSI reporting may be performed on a physical uplink control channel (PUCCH), and aperiodic CSI reporting may be performed on a physical uplink control channel (PUSCH).

Although one frequency band has been used in a traditional wireless communication system (e.g., a system according to 3GPP LTE Release 8 or 9), in an advanced wireless communication system (e.g., 3GPP LTE Release 10, 11 or 12) A plurality of frequency bands may be grouped using carrier aggregation (CA) to achieve the same effect as using a logically large bandwidth band. For example, two non-contiguous bands in the frequency domain (i.e., two component carriers (CCs) having different carrier frequencies) are merged, resulting in a higher transmission rate (rate). In a CA, a cell may be composed of downlink resources (i.e., downlink carrier wave (DL CC)) and / or uplink resources (i.e., uplink carrier wave (UL CC)). Here, the UL CC is not an essential element, and one cell may correspond only to the DL CC, or may correspond to the DL CC and the UL CC together. DL CC and UL CC can be expressed by a carrier frequency, and a carrier frequency means a center frequency in the corresponding cell. A cell can be classified into a primary cell (PCell) operating at a primary frequency and a secondary cell (SCell) operating at a secondary frequency. PCell and SCell can be collectively referred to as a serving cell. PCell is a single serving cell that provides security input and non-access stratum (NAS) mobility information in a Radio Resource Control (RRC) connection establishment or re- . Depending on the capabilities of the terminal, one or more SCells may be configured to form a set of serving cells in addition to the PCell. That is, a set of serving cells configured for one terminal may include only one PCell, or one PCell and one or more SCell.

Conventional Carrier Merging defines the merging of up to five CCs, but in recent years CA enhancement has been discussed which merge more than five (e.g., up to 32) CCs. To support this improved CA (eCA), the introduction of a new PUCCH format with a larger capacity than the conventional PUCCH format is being discussed.

In the conventional CA, the uplink control information (UCI) through the PUCCH (collectively referred to as UCI, HARQ-ACK, CSI, scheduling request (SR), etc.) can be transmitted only in the primary cell , But eCA also discusses supporting PUCCH transmission in the secondary cell (SCell).

Therefore, a concrete resource allocation scheme for transmitting an uplink control channel when a new PUCCH format is set for the UE is required.

The present invention provides a method and apparatus for dynamically allocating resources for an uplink control channel.

The present invention provides a method and apparatus for allocating a resource region that can be used by an uplink control channel and indicating a resource region used by an uplink control channel.

The present invention provides a method and apparatus for semi-statically allocating a resource region that can be used by an uplink control channel, and dynamically allocating a resource region used by the uplink control channel.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

According to an aspect of the present invention, a method for transmitting uplink control information in a wireless communication system includes receiving, from a base station, first information indicating a first resource region that can be used by a physical uplink control channel (PUCCH) ; Receiving from the BS second information used for determining a second resource region to which the PUCCH is allocated; And mapping the uplink control information to the second resource region determined based on the first information and the second information and transmitting the mapping to the base station. Here, the second resource area may be included in the first resource area, the first information may be set by an upper layer, and the second information may be dynamically indicated through downlink control information (DCI).

In addition, the second resource region may correspond to a plurality of PRB pairs in one subframe.

, 또는 N ⁽⁴⁾ _PUCCH,RB 및 N ⁽⁴⁾ _RB,START 에 의해서 결정될 수 있다. 상기

는 PUCCH 포맷 2, 2a, 2b 또는 3에 의해서 사용될 수 있는 자원블록(RB) 개수를 나타내고, 상기 N ⁽⁴⁾ _PUCCH,RB 는 PUCCH 포맷 4에 의해서 사용될 수 있는 RB 개수를 나타내고, 상기 N ⁽⁴⁾ _RB,START 는 PUCCH 포맷 4에 의해서 사용될 수 있는 RB의 시작점을 나타낼 수 있다. Also, the first resource region

, Or N ⁽⁴⁾ _{PUCCH, RB} and N ⁽⁴⁾ _{RB, START} . remind

Denotes a resource block (RB) number that can be used by the PUCCH formats 2, 2a, 2b or 3, wherein the N ⁽⁴⁾ _{PUCCH, RB} represents the RB number that can be used by the PUCCH format 4, wherein the N ^{(4 )} _{RB, START} can indicate the starting point of RB that can be used by PUCCH format 4.

In addition, the information indicating the second resource area may include one or more of an RIV, a PUCCH format indicator, or a resource allocation direction indicator. RB _START and L _CRBs are derived from the RIV, the RB _START indicates a starting point of the second resource region, and the L _CRBS indicates a number of consecutive RBs of the second resource region.

In addition, the information indicating the second resource area may include one or more of N _CRBs , n ⁽⁴⁾ _{PUCCH, RBmax} , PUCCH format indicator, or resource allocation direction indicator. The n ⁽⁴⁾ _{PUCCH and RBmax} represent the maximum number of RBs that can be allocated to the second resource area, and the N _CRBs may represent the number of consecutive RBs of the second resource area.

The number of consecutive RBs of the second resource region may be derived from a PUCCH resource index or an orthogonal cover code (OCC) index included in the DCI.

The resource allocation direction indicator of the second resource area may be derived from a PUCCH resource index or an orthogonal cover code (OCC) index included in the DCI.

The information indicating the second resource area may be signaled by a TPC command field of the DCI.

The features briefly summarized above for the present invention are only illustrative aspects of the detailed description of the invention which are described below and do not limit the scope of the invention.

According to the present invention, the present invention can be provided with a novel scheme for dynamically indicating a resource allocation for a new PUCCH format, and dynamically deriving resources allocated based on the indication.

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

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention, illustrate various embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1 is a diagram showing a configuration of a wireless device according to the present invention.
2 and 3 are views for explaining the structure of a radio frame of the 3GPP LTE system.
4 is a diagram showing a structure of a downlink sub-frame.
5 is a diagram showing a structure of an uplink subframe.
FIG. 6 is a diagram for explaining the structure of the PUCCH format 3. FIG.
Figs. 7 and 8 are diagrams for explaining an exemplary structure of the PUCCH format 4. Fig.
FIG. 9 is a view for explaining an example of PUCCH format 4 resource allocation according to the present invention.
FIG. 10 is a diagram for explaining a slot determination method in which PF4 resources are allocated. FIG.
11 and 12 are diagrams for explaining further examples of PUCCH format 4 resource allocation according to the present invention.
13 to 15 are diagrams for explaining further examples of PUCCH format 4 resource allocation according to the present invention.
16 is a diagram for explaining a method according to an example of the present invention.
17 is a diagram for explaining a configuration of a processor according to the present invention.

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

In addition, the present invention will be described with respect to a wireless communication network. Operations performed in the wireless communication network may be performed in a process of controlling a network and transmitting or receiving a signal from a system (e.g., a base station) And may be performed in a process of transmitting or receiving a signal from a terminal coupled to the wireless network.

That is, it is apparent that various operations performed for communication with a terminal in a network composed of a plurality of network nodes including a base station can be performed by a network node other than the base station or the base station. A 'base station (BS)' may be replaced by a term such as a fixed station, a Node B, an eNode B (eNB), an access point (AP) In addition, 'terminal' may be replaced with terms such as User Equipment (UE), Mobile Station (MS), Mobile Subscriber Station (MSS), Subscriber Station (SS) .

The terms used to describe embodiments of the present invention may be described by 3GPP LTE / LTE-Advanced (LTE-Advanced) standards documents, unless otherwise specified. It should be noted, however, that this is for economy and clarity of explanation only, and that the embodiments of the present invention are not limited to apply only to systems conforming to 3GPP LTE / LTE-A or its subsequent standards.

Hereinafter, a wireless device according to the present invention will be described.

1 is a diagram showing a configuration of a wireless device according to the present invention.

1 illustrates a terminal apparatus 100 corresponding to an example of a downlink receiving apparatus or an uplink transmitting apparatus and a base station apparatus 200 corresponding to an example of a downlink transmitting apparatus or an uplink receiving apparatus.

The terminal device 100 may include a processor 110, an antenna unit 120, a transceiver 130, and a memory 140. [

The processor 110 performs baseband-related signal processing and may include an upper layer processing unit 111 and a physical layer processing unit 112. The upper layer processing unit 111 may process an operation of a MAC (Medium Access Control) layer, an RRC (Radio Resource Control) layer, or a higher layer. The physical layer processing unit 112 can process the operation of the physical (PHY) layer (e.g., uplink transmission signal processing, downlink reception signal processing). The processor 110 may control the overall operation of the terminal device 100, in addition to performing baseband-related signal processing.

The antenna unit 120 may include one or more physical antennas, and may support MIMO transmission / reception when the antenna unit 120 includes a plurality of antennas. The transceiver 130 may include a radio frequency (RF) transmitter and an RF receiver. The memory 140 may store information processed by the processor 110, software related to the operation of the terminal device 100, an operating system, applications, and the like, and may include components such as buffers.

The base station apparatus 200 may include a processor 210, an antenna unit 220, a transceiver 230, and a memory 240.

The processor 210 performs baseband-related signal processing, and may include an upper layer processing unit 211 and a physical layer processing unit 212. The upper layer processing unit 211 may process the operations of the MAC layer, the RRC layer, or higher layers. The physical layer processing unit 212 can process the operation of the PHY layer (e.g., downlink transmission signal processing, uplink reception signal processing). In addition to performing baseband related signal processing, the processor 210 may also control operation of the entire base station apparatus 200. [

The antenna unit 220 may include one or more physical antennas, and may support MIMO transmission / reception when the antenna unit 220 includes a plurality of antennas. The transceiver 230 may include an RF transmitter and an RF receiver. The memory 240 may store information processed by the processor 210, software related to the operation of the base station 200, an operating system, applications, and the like, and may include components such as buffers.

The radio frame structure will be described below.

2 and 3 are views for explaining the structure of a radio frame of the 3GPP LTE system.

In a cellular OFDM (Orthogonal Frequency Division Multiplexing) wireless packet communication system, uplink or downlink transmission is performed on a subframe basis. One subframe is defined as a certain time interval including a plurality of OFDM symbols. The 3GPP LTE standard supports a Type 1 radio frame structure applicable to Frequency Division Duplex (FDD) and a Type 2 radio frame structure applicable to TDD (Time Division Duplex).

2 is a diagram showing the structure of a type 1 radio frame. One radio frame is composed of 10 subframes, and one subframe is composed of two slots in a time domain. The time taken for one subframe to be transmitted is called a transmission time interval (TTI). For example, the length of one subframe is 1 ms and the length of one slot is 0.5 ms. One slot may comprise a plurality of OFDM symbols in the time domain. The OFDM symbol may also be referred to as an SC-FDMA (Single Carrier-Frequency Division Multiple Access) symbol or a symbol interval. The number of OFDM symbols included in one slot may vary according to the CP (Cyclic Prefix) setting. The CP has an extended CP and a normal CP. For example, in the case of a normal CP, the number of OFDM symbols included in one slot may be seven. In the case of the extended CP, since the length of one OFDM symbol is increased, the number of OFDM symbols included in one slot may be smaller than that of the normal CP. If the channel condition is unstable, such as when the cell size is large or the UE moves at a high speed, an extended CP may be used to further reduce the inter-symbol interference.

In FIG. 2, a resource grid assumes an OFDM symbol of a normal CP, and one slot in the time domain corresponds to 7 OFDM symbols. In the frequency domain, the system bandwidth is defined as an integer multiple of a resource block (RB), and the downlink system bandwidth is denoted by N ^DL and the uplink system bandwidth is ^denoted by N ^UL . The resource block is a resource allocation unit and may correspond to a plurality of (for example, seven) OFDM symbols corresponding to one slot in the time domain and a plurality of (for example, twelve) continuous subcarriers in the frequency domain . Each element on the resource grid is called a resource element (RE). One resource block includes 12 x 7 resource elements. The resource grid of FIG. 2 can be applied equally to an uplink slot and a downlink slot. In addition, the resource grid of FIG. 2 can be equally applied to slots of a Type 1 radio frame and slots of a Type 2 radio frame to be described later.

3 is a diagram showing the structure of a Type 2 radio frame. The Type 2 radio frame is composed of two half frames. Each half frame includes five subframes, a downlink pilot time slot (DwPTS), a guard period (GP), an uplink pilot time slot (UpPTS) ≪ / RTI > Like the Type 1 radio frame, one subframe consists of two slots. DwPTS is used for initial cell search, synchronization, or channel estimation in the UE, in addition to data transmission / reception. UpPTS is used to synchronize the channel estimation at the base station and the uplink transmission synchronization of the UE. The guard interval GP is a period for eliminating the interference caused in the uplink due to the multipath delay of the downlink signal between the uplink and the downlink. DwPTS, GP, and UpPTS may be referred to as special subframes.

4 is a diagram showing a structure of a downlink sub-frame. A plurality of (e.g., three) OFDM symbols in the front part of the first slot in one subframe corresponds to a control area to which the control channel is allocated. The remaining OFDM symbols correspond to a data area to which a Physical Downlink Shared Chanel (PDSCH) is allocated. The downlink control channels used in the 3GPP LTE system include a Physical Control Format Indicator Channel (PCFICH), a Physical Downlink Control Channel (PDCCH), a Physical Hybrid Automatic Control Channel repeat request indicator channel, PHICH). In addition, an Enhanced Physical Downlink Control Channel (EPDCCH) can also be transmitted to the UEs in the data area.

The PCFICH includes information on the number of OFDM symbols transmitted in the first OFDM symbol of the subframe and used for control channel transmission in the subframe.

The PHICH includes HARQ-ACK information as a response of the uplink transmission.

(E) Control information transmitted through the PDCCH is referred to as downlink control information (DCI). The DCI includes uplink or downlink scheduling information or other control information according to various purposes such as an uplink transmission power control command for an arbitrary terminal group. The base station determines the (E) PDCCH format according to the DCI transmitted to the UE, and adds a CRC (Cyclic Redundancy Check) to the control information. The CRC is masked with an identifier called a Radio Network Temporary Identifier (RNTI) according to the owner or use of the (E) PDCCH. (E) If the PDCCH is for a specific UE, the cell-RNTI (C-RNTI) identifier of the UE may be masked in the CRC. Alternatively, if the PDCCH is for a paging message, a Paging Indicator Identifier (P-RNTI) may be masked to the CRC. If the PDCCH is for a system information block (SIB), the system information identifier and the system information RNTI (SI-RNTI) may be masked to the CRC. A random access-RNTI (RA-RNTI) may be masked to the CRC to indicate a random access response that is a response to the transmission of the UE's random access preamble.

5 is a diagram showing a structure of an uplink subframe. The UL subframe may be divided into a control domain and a data domain in the frequency domain. A physical uplink control channel (PUCCH) including uplink control information is allocated to the control region. A physical uplink shared channel (PUSCH) including user data is allocated to the data area. A PUCCH for one terminal is allocated to a resource block pair (RB pair) in a subframe. Resource blocks belonging to a resource block pair occupy different subcarriers for two slots. It is assumed that the resource block pair allocated to the PUCCH is frequency-hopped at the slot boundary.

Hereinafter, a physical uplink control channel (PUCCH) will be described.

The amount of uplink control information (UCI) that the UE can transmit in one subframe depends on the number of SC-FDMA symbols available for transmission of the control information (i.e., the reference signal RS for coherent detection of the PUCCH ) SC-FDMA symbols excluding the SC-FDMA symbols used for transmission).

In the 3GPP LTE system, the PUCCH is defined in seven different formats in total according to the control information, the modulation technique, the amount of control information, etc., and the number of bits (M _bits ) transmitted per subframe according to each PUCCH format is shown in the following table 1.

PUCCH format 1 is used when there is a Scheduling Request (SR), that is, when it is a positive SR.

The PUCCH format 1a is used for 1-bit HARQ-ACK (i.e., HARQ ACK / NACK), or in case of FDD, for 1-bit HARQ-ACK and positive SR (with positive SR). PUCCH format 1b is used for 2-bit HARQ-ACK or for 2-bit HARQ-ACK and positive SR. Also, the PUCCH format 1b is used for up to 4 bits of HARQ-ACK using channel selection. This can be applied to a case where more than one serving cell (for example, two serving cells) is set for the UE, or one serving cell is set for the UE in case of TDD.

PUCCH Format 2 is used for CSI reporting with HARQ-ACK and not multiplexed. Also, PUCCH format 2 is used for HARQ-ACK for extended CP (cyclic prefix) and multiplexed CSI report. PUCCH format 2a is used for 1-bit HARQ-ACK for normal CP and for multiplexed CSI reporting. PUCCH format 2b is used for 2-bit HARQ-ACK for normal CP and for multiplexed CSI reporting.

PUCCH Format 3 is used for up to 10 bits of HARQ-ACK for FDD or up to 20 bits of HARQ-ACK for TDD. PUCCH format 3 includes up to 11 bits corresponding to 10-bit HARQ-ACK for FDD and 1 bit positive / negative SR, or up to 21 bits corresponding to 20-bit HARQ-ACK for TDD and 1 bit positive / negative SR . PUCCH format 3 is also used for HARQ-ACK of a plurality of bits, a 1-bit positive / negative SR, and a CSI report for one serving cell.

FIG. 6 is a diagram for explaining the structure of the PUCCH format 3. FIG.

PUCCH format 3 is different from PUCCH format 1 / 1a / 1b or PUCCH format 2 / 2a / 2b, and block spreading is applied to transmission of control information. For example, the uplink control information bits (e.g., a plurality of HARQ-ACK bits (including SR information bits) and / or CSI bits) may be encoded to form 48 bits. The coded 48 bits may be scrambled using a cell-specific sequence. 24 bits are transmitted in each of the specific SC-FDMA symbols in the even-numbered slot, and the remaining 24 bits are transmitted in each of the specific SC-FDMA symbols in the odd-numbered slot. 24 bits per SC-FDMA symbol are modulated with twelve Quadrature Phase Shift Keying (QPSK) symbols, and four or five SC-FDMA symbols are allocated in a slot according to a spreading factor (SF) 4 or 5 orthogonal cover codes (OCC). PUCCH transmissions by different UEs using different OCCs can be multiplexed in the same PRB pair. In the example of FIG. 6, w (0), w (1), w (2), w (3), w (4) represent OCC. The spread symbols are DFT (Discrete Fourier Transform) precoded in one RB in the frequency domain and four or five SC-FDMA symbols in the time domain.

In case of a normal CP, a PUCCH demodulation reference signal (DMRS) is mapped to SC-FDMA symbol indexes 1 and 5 (where the SC-FDMA symbol index is assumed to start from 0) in one slot, Control information may be mapped to an SC-FDMA symbol index (i.e., SC-FDMA symbol index 0, 2, 3, 4, 6). Here, it is assumed that the last SC-FDMA symbol in the second slot of one subframe is used for SRS transmission and the remaining four SC-FDMA symbols are used for PUCCH format 3. The shortened PUCCH format 3 , Which corresponds to the case where the last SC-FDMA symbol of one subframe is punctured for transmission of the sounding reference signal SRS. In the case of the extended CP, PUCCH DMRS is mapped to one SC-FDMA symbol (i.e., SC-FDMA symbol index 3) in one slot, and the remaining SC-FDMA symbols (i.e., SC- 1, 2, 4, 5).

는 OCC를 나타낸다. 여기서, DMRS 심볼에 OCC를 적용한 결과 값은 항상 1이기 때문에, 실제로 ZC 시퀀스에 적용되는 OCC를 통해서 추가적인 다중화가 제공되는 것은 아니다.In the example of FIG. 6, a DMRS symbol may be generated from a ZC (Zadoff-Chu) sequence with a specific cyclic shift value applied, and an OCC of length 2 may be applied over two DMRS symbols of one slot. In the example of Figure 6

Indicates OCC. Here, since the result of applying the OCC to the DMRS symbol is always 1, additional multiplexing is not actually provided through the OCC applied to the ZC sequence.

As described with reference to FIG. 5, the PRB pair used in the PUCCH format 3 includes one PRB at one frequency edge of the system bandwidth of one slot in one subframe and one PRB at the opposite frequency And one PRB of the edge. That is, the PRB pair of PUCCH format 3 can be frequency hopped (i.e., intra-subframe frequency hopping) to the slot boundary. The frequency hopping relationship is defined through pairing of PRBs in each slot, and from which PUCCH format 3 resource index the uplink control information is to be transmitted via which PRB-pair is determined.

When the PUCCH format 3 is set for the UE, one resource set (i.e., including a plurality of PUCCH format 3 resources) can be set by an upper layer (e.g., RRC). (PUCCH TPC) in the (E) PDCCH downlink DCI (e.g., DCI format 1 / 1A / 1B / 1D / 2 / 2A / 2B / 2C / 2D) Transmission Power Control) command field (2-bit size), or the HARQ-ACK resource offset field (2-bit size) in the EPDCCH downlink DCI. The HARQ-ACK resource offset field is present in the EPDCCH DCI but not in the PDCCH DCI. 2 bits of the HARQ-ACK resource offset field are set when the EPDCCH DCI is transmitted on the SCell, or when the EPDCCH DCI for scheduling the PDSCH on the SCell is transmitted on the PCell and the PUCCH format 3 is set for HARQ-ACK feedback for the UE May have a value of zero.

)의 매핑 관계를 나타낸다. Table 2 below shows the TPC field or HARQ-ACK resource offset field and the PUCCH format 3 resource index (

). ≪ / RTI >

Hereinafter, HARQ-ACK information will be described.

The HARQ-ACK information is control information to be fed back from the receiving side to the transmitting side according to whether or not decoding of the data transmitted from the transmitting side is successful. For example, if the UE successfully decodes the downlink data, it can feed back the ACK information, and if not, the NACK information to the base station. Specifically, in the 3GPP LTE system, HARQ-ACK transmission is required in the data receiving side can be broadly divided into the following three cases.

The first is a case of transmitting HARQ-ACK for PDSCH transmission indicated by detection of (E) PDCCH. Second, HARQ-ACK is transmitted to (E) PDCCH indicating release of SPS (Semi-Persistent Scheduling). Third, (E) HARQ-ACK for PDSCH transmitted without PDCCH detection is transmitted, which means HARQ-ACK transmission for SPS. The HARQ-ACK transmission scheme is not limited to any one of the above three cases unless otherwise stated in the following description. In the following description, the above three cases are collectively referred to as DL transmission in which HARQ-ACK is required.

Next, transmission resources of HARQ-ACK information in the FDD scheme and the TDD scheme will be described in detail.

The FDD scheme is a scheme of performing transmission and reception by separating a downlink (DL) and an uplink (UL) for each independent frequency band. Therefore, when the base station transmits the PDSCH to the DL band, the UE can transmit the HARQ-ACK response indicating the reception of the complete DL data through the PUCCH on the UL band corresponding to the DL band after a specific time. Therefore, DL and UL are operated in a one-to-one correspondence.

Specifically, in the example of the 3GPP LTE system, the control information on the downlink data transmission of the base station is transmitted to the UE through the PDCCH, and the UE receiving the data scheduled through the PDCCH on the PDSCH transmits uplink control information (Or piggybacked on the PUSCH) PUCCH, which is a channel on which the HARQ-ACK is transmitted. In general, a PUCCH for HARQ-ACK transmission is not allocated to each UE in advance, but a plurality of UEs in a cell use a plurality of PUCCHs for each time point. Therefore, the PUCCH to which the UE receiving the downlink data at a certain time transmits the HARQ-ACK can use the PUCCH corresponding to the PDCCH in which the UE receives the scheduling information for the downlink data.

(For example, PUCCH format 1 / 1a / 1b) corresponding to the PDCCH will be described in more detail. A PDCCH to be transmitted to a UE in a certain subframe is divided into a CCE (Self-Organizing Cell) which forms a PDCCH region of the subframe, And one or more CCEs. Also, there are resources capable of transmitting a plurality of PUCCHs in a region where PUCCHs of the uplink subframe are transmitted. At this time, the terminal determines a PUCCH resource index corresponding to a specific (i.e., first) CCE index among the CCEs constituting the received PDCCH, and transmits the HARQ-ACK using the corresponding PUCCH resource have.

In a system in which a PUCCH serving cell (PCell or P-SCell, which will be described in detail later) is set to frame structure 1 in FDD (i.e., frame structure type 1) or FDD-TDD, , k = 4) may transmit HARQ-ACK information in the subframe index n for the PDSCH transmission. The UE can determine the PUCCH resource index to transmit the HARQ-ACK in the subframe n from the PDCCH indicating the PDSCH transmission in the subframe n-k.

Next, HARQ-ACK transmission in the TDD scheme will be described.

Since the downlink transmission and the uplink transmission in the TDD mode are divided by time, subframes in one radio frame are divided into a downlink subframe and an uplink subframe. Table 3 illustrates the UL-DL setting in TDD mode.

In Table 3, D denotes a downlink subframe, U denotes an uplink subframe, and S denotes a special subframe including DwPTS, GP, and UpPTS.

In a system in which a PUCCH serving cell (PCell or P-SCell, to be described later in detail) is set to frame structure 2 in TDD (frame structure type 2) or FDD-TDD, a UE transmits PDSCH in one or more downlink sub- HARQ-ACK information for the uplink subframe in one uplink subframe. The UE can transmit HARQ-ACK information in the uplink sub-frame n for the PDSCH transmission received in the downlink sub-frame nk, and the k value can be given according to the UL-DL setting. For example, for the UL-DL settings of Table 3, the downlink association set index K: {k ₀ , k ₁ , ..., k _{M -1} } Lt; / RTI > That is, M downlink subframes may be associated with one uplink subframe n, and M downlink subframes may be referred to as subframes nk _m (m = 0, 1, ..., M-1) .

For example, in the case of the UL-DL setting index 0 in Table 4, since k = 4 is given for the UL subframe index 9, one (i.e., M = 1) HARQ-ACK information for data received in the link sub-frame index 5 (i.e., the sub-frame index preceding four sub-frames after the sub-frame index 9) may be transmitted in the uplink sub-frame index 9. Alternatively, (I.e., M = 9) is given as k = 13, 12, 9, 8, 7, 5, 4, 11 and 6 with respect to the UL subframe index 2 in the UL- (= 2-13) of the previous radio frame of the immediately preceding radio frame, the downlink subframe index 0 (= 2-12) of the immediately preceding radio frame, 3 (= 2-9), 4 (= 2-8), 5 (= 2-7), 7 (= 2-5), 8 (= 2-4), 1 = 2-6)) for the data received in HARQ-AC K information can be transmitted in the uplink subframe index 2.

Also, in a particular TDD CA setup environment (e.g., when the TDD UL-DL settings of the serving cells are different, or when the PCell is set to TDD and the SCell (s) are set to FDD) A DL reference DL-DL setup may be used (e.g., for SCell (s)). In this case, a subframe for HARQ-ACK transmission based on the DL reference UL-DL setting may be used instead of the TDD UL-DL setting (e.g., TDD UL-DL setting established through SIB or RRC signaling) An association (i.e., HARQ-ACK timing) can be determined. For example, the HARQ-ACK timing of the serving cell with TDD UL-DL setting 0 can be determined by DL reference UL-DL setting 2. This DL reference UL-DL setup can be determined according to a predetermined relationship between the PUCCH serving cell and a serving cell (e.g., PDSCH transmission serving cell) where data is received and HARQ-ACK transmission is required. For example, in the case of a CA for two serving cells having different TDD UL-DL settings, the DL reference UL is set according to the combination of the TDD UL-DL setting of the PUCCH serving cell and the TDD UL-DL setting of the PDSCH transmitting serving cell. -DL setting can be determined. Alternatively, in the case of FDD-TDD, the DL reference UL-DL setting may be determined according to the combination of the TDD UL-DL setting of the PUCCH serving cell and the PDSCH transmission FDD serving cell.

Hereinafter, the HARQ-ACK codebook size will be described.

A CA up to 3GPP LTE Release-12 defines that up to five serving cells are merged. In one serving cell, up to two codeword transmissions are supported in one subframe depending on the transmission mode, and the HARQ-ACK bit size for each codeword transmission is 1 bit, and thus, for two codeword transmissions, HARQ- The ACK bit size is 2 bits.

In case of FDD, HARQ-ACK for transmission in one downlink subframe is transmitted in one uplink subframe. In case of FDD, the maximum number of HARQ-ACK bits can be determined according to Equation (1) below.

In Equation (1), K _{mimo, c} indicates whether the MIMO transmission mode is set in the serving cell c. (Or TB) is transmitted on one PDSCH, or two CWs (or TB) are transmitted on one PDSCH and a HARQ-ACK is transmitted on one PDSCH if the value is 1, Spatial bundling is applied (space bundling means bundling HARQ-ACK information for two codewords (or TBs) in one subframe). If the value is 2, it means that two CWs (or TBs) are transmitted on one PDSCH and space bundling for HARQ-ACK is not applied. C is the number of serving cells set in the UE.

According to Equation (1), in the case of FDD, the maximum bit size of the HARQ-ACK transmitted in one uplink subframe is 10 bits. That is, when C = 5 and K _{mimo, c} = 2 in all the serving cells, the HARQ-ACK bit size is the maximum. Therefore, in the case of FDD, HARQ-ACK reporting is possible using PUCCH format 3 even if five serving cells are set.

In the case of TDD, HARQ-ACK for transmission in one or more downlink subframes is transmitted in one uplink subframe, and HARQ-ACK for transmission in uplink subframes of up to nine as shown in Table 4 And may be transmitted in one uplink subframe. In case of TDD, the maximum number of HARQ-ACK bits can be determined according to Equation (2) below.

In Equation (2), K _{mimo, c} indicates whether the MIMO transmission mode is set in the serving cell c. (Or TB) is transmitted on one PDSCH, or two CWs (or TBs) are transmitted on one PDSCH and space bundling is applied to HARQ-ACK If the value is 2, it means that two CWs (or TBs) are transmitted in one PDSCH and space bundling for HARQ-ACK is not applied. And M _c denotes the number of downlink subframes associated with the uplink subframe in which the PUCCH is transmitted. C is the number of serving cells set in the UE.

According to Equation (2), in case of TDD and the same TDD UL-DL setting is applied to serving cells, the maximum bit size of the HARQ-ACK transmitted in one uplink subframe is theoretically 90 bits . That is, when C = 5, K _{mimo, c} = 2 in all the serving cells, and M _c = 9 for all the serving cells, the HARQ-ACK bit size is theoretically maximum. However, in the case of TDD, since the CA is set with the following restriction, the size of the HARQ-ACK bit transmitted in one uplink subframe may be changed depending on the case.

Specifically, in the 3GPP LTE Release-10 CA, the TDD UL-DL setting is the same for each serving cell. Only up to two serving cells may be established if a TDD UL-DL setup index 5 (i.e., nine downlink subframes are associated with one uplink subframe) is applied (more than two serving Cell exceeds the number of bits supported by PUCCH format 3). In this case, the maximum number of HARQ-ACK bits is 36 (that is, C = 2, K _{mimo in} each of two serving cells _{, c} = 2, and M _c = 9 in each of two serving cells).

In the 3GPP LTE Release-11 CA, the TDD UL-DL setting may vary for each serving cell. In this case, the downlink UL-DL setting (that is, the above-described DL reference UL-DL setting) which becomes a reference can be determined depending on what UL-DL setting of PCell and SCell is. If the downlink reference UL-DL setting index 5 is applied, only up to two serving cells can be set. In this case, the maximum number of HARQ-ACK bits is 36 (that is, assume a case where M = 9 in the _c = 2 and C, K _{mimo, c} = 2, the two serving cells respectively in the two serving cells, respectively).

Also, in case of TDD, if the number of HARQ-ACK bits is larger than 20 bits, spatial bundling is applied to all serving cells. First, bundling means an operation for expressing HARQ-ACK information of a plurality of bits in a smaller number of bits. For example, bundling may be performed by a logical AND, but this is merely an example, and bundling may be performed using other methods of operation (e.g., logical OR). Next, spatial bundling means bundling HARQ-ACK information for two codewords in one subframe.

In a 3GPP LTE Release-12 CA, TDD and FDD may be set differently for each serving cell (this can be referred to as FDD-TDD setting). If the number of downlink subframes (i.e., M) associated with one uplink subframe is greater than 4 when PUCCH format 3 is set for the UE, the HARQ-ACK bit size to be transmitted in PUCCH format 3 is 21 The number of CA serving cells is limited. That is, since the HARQ-ACK bit size is not allowed to exceed 21 bits even after the space bundling is applied to transmit in the PUCCH format 3, the number of CA serving cells causing this can not be set.

In this way, it can be seen that even in the case of a conventional CA in which a maximum of five serving cells can be set, HARQ-ACK transmission in all possible cases is not supported. Recently, eCA (enhanced CA) merging more than 5 serving cells (for example, up to 32) is being discussed. In this case, the maximum number of bits of the HARQ-ACK is 64 bits (i.e., C = 32, assuming that K _{mimo and c} = 2 in each of two serving cells) according to Equation (1) (Assuming that C = 32, K _{mimo in} each of the 32 serving cells _{, c} = 2, and M _c = 9 in each of the 32 serving cells) according to Equation 2 in the case of TDD, FDD In TDD, PCell is set to TDD and when 31 SCs are set to FDD, the maximum number of HARQ-ACK bits is 638 bits (i.e., C = 32, K _{mimo, c} = 2 in each of the 32 serving cells For the PCell, the TDD UL-DL set index 5 is applied so that 9 downlink subframes are associated with one uplink subframe, 10 downlink subframes from each of the 31 SCells are associated with one uplink subframe Quot;).

In order to support such eCA, introduction of a new PUCCH format having a larger capacity than the conventional PUCCH format is being discussed. This new PUCCH format is referred to herein as PUCCH format 4, but is not limited to its name.

In the present invention, the PUCCH format 4 may mean a new PUCCH format with a capacity to support control information bits of a size exceeding P bits (i.e., the size of control information bits before channel coding is applied exceeds P bits) Here, P may be 22, which is the maximum control information bit size supported by PUCCH Format 3. In addition, the maximum capacity that PUCCH format 4 can support is 64 bits for FDD and at least 128 bits for TDD. Alternatively, PUCCH format 4 may support a 128 bit size without distinguishing between frame structures.

For example, PUCCH format 4 may be used when more than five serving cells are set for the UE, or when five or fewer serving cells are set for the UE but the control information bit size to be transmitted exceeds 22 Can be used.

Figs. 7 and 8 are diagrams for explaining an exemplary structure of the PUCCH format 4. Fig.

As for the structure of the PUCCH format 4, two types of format structures are largely discussed.

7, a type 1 PUCCH format 4 structure may be a PUCCH format 3 structure (for example, a structure in which the structure of PUCCH format 3 in FIG. 6 is extended to a plurality of PRB pairs) in a plurality of PRB pairs . That is, the PRB pair used in the PUCCH format 3 is composed of one PRB of one frequency edge of the system bandwidth of one slot in one subframe and one PRB of the opposite frequency edge of the other slot do. The type 1 PUCCH format 4 is used in the PUSCH area direction (i.e., in the direction from the both frequency edges of the system bandwidth to the center (or DC) (i.e., the INWARD direction)) in the PRB pair used for the PUCCH format 3, One PRB pair may be used.

A type 2 PUCCH format 4 structure like the example of FIG. 8 uses a part of the PUSCH area instead of the PUCCH area. In the example of FIG. 8, the resources used for Type 2 PUCCH Format 4 are not limited to one PRB size in one slot, and one or a plurality of PRB pairs may be used. Even if one PRB pair is used for PUCCH format 4, a structure may be used in which PUCCH format 3 allocates more information than information to be allocated using one PRB pair.

8A shows that a PRB pair used for PUCCH format 4 in a subframe is frequency hopped (i.e., intra-subframe frequency hopping) to a slot boundary and a DMRS structure similar to PUSCH is used for PUCCH format 4 .

The example of FIG. 8 (b) is the case where the PRB pair used for PUCCH format 4 is not intra-subframe frequency hopped and a DMRS structure similar to PUSCH is used for PUCCH format 4.

The example of FIG. 8 (c) is a case where a PRB pair used for PUCCH format 4 is hopped at an intra-subframe frequency and a DMRS structure similar to PUCCH format 3 is used for PUCCH format 4.

Hereinafter, a new resource allocation scheme for PUCCH format 4 will be described when a new PUCCH format (i.e., PUCCH format 4) is set for the UE according to the present invention. For example, a scheme for indicating a new resource allocation for the PUCCH format 4, a scheme for deriving a resource to which the UE allocates control information based on the resource allocation indication, a control information on the physical resource based on the derived resource, The description will be directed to examples of the present invention.

The PUCCH format 4 is set for the UE when HARQ-ACK transmission is performed in a case where more than C (for example, C = 5) serving cells are set for the UE (or eCA is set) . However, when the PUCCH format 4 is set, the TDD CA or the FDD-TDD CA may set the DL reference UL-DL setting index 5 in the case where the TDD UL-DL setting index 5 is applied to the PUCCH transmission serving cell. The PUCCH format 4 may be set for the UE for HARQ-ACK transmission even when 2? C? 5 serving cells are set for the UE.

The PUCCH format 4 is set for the UE, for example, through the PUCCH- Format parameter of the IE named PUCCH - Config among the information elements (IE) for the upper layer signaling (for example, RRC signaling) . Or implicitly through other parameters or settings. For example, it may mean that the PUCCH format 4 is set if resources for PUCCH format 4 can be derived at the terminal.

The eCA may be set for the UE and the PUCCH format 4 may be set for the UE. That is, the PUCCH format 4 may be set when the eCA is set, or the PUCCH format 4 may be set even if the eCA is not set. In this case, whether or not the PUCCH format 4 is set may be determined by considering the number of serving cells set in the UE, the frame structure type of the serving cell to be PUCCH transmitted (i.e., the first type of FDD or the second type of TDD) And the like. Or, if the setting of the PUCCH format 4 for the terminal is related to the setting of the eCA, the PUCCH format 4 may be set for the terminal when the eCA is set for the terminal.

The fact that the eCA is configured for the terminal may mean that the parameters (or higher layer signaling including it) for the new operation not supported in the CA setup are provided to the terminal. For example, the fact that the eCA is set for the UE means that there are more than C serving cells (e.g., C = 2 for TDD UL-DL setting 5 or DL reference UL-DL setting 5, May mean that C = X if the number of serving cells in which the number of HARQ-ACK bits does not exceed 21 bits is X, and C = 5 in other cases) is set for the UE. Also, the fact that the eCA is set for the UE may mean that an upper layer parameter related to the eCA operation is set. For example, the upper layer parameter associated with the eCA operation may include a parameter indicating whether the PUCCH transmission is allowed through the SCell. Alternatively, the settings for the eCA and the PUCCH transmission through SCell may be defined as separate settings.

The PUCCH transmission on the PCell is mandatory for the UE, but the PUCCH transmission on the SCell is allowed by the BS to the UE. The SCell for which the PUCCH transmission is set may also be referred to as P-SCELL. PCell and P-SCell are collectively referred to as a PUCCH serving cell. For a PUCCH on a PCell or a PUCCH on a P-SCELL, there may be a serving cell (s) associated with the PUCCH. For example, when the HARQ-ACK for the PDSCH in the second serving cell is in a relationship of being transmitted through the PUCCH of the first serving cell (i.e., the PDSCH transmission serving cell and the PUCCH transmission serving cell are different) 2 serving cell is associated with the PUCCH of the first serving cell. The serving cell associated with the PUCCH on the first serving cell may also include the first serving cell itself (i.e., when the HARQ-ACK for the PDSCH in the first serving cell is transmitted on the PUCCH of the first serving cell). There may also be a serving cell (s) associated with a PUCCH on the PCell, a serving cell (s) associated with a PUCCH on the P-SCELL, and a serving cell (s) associated with a PUCCH on one serving cell Quot; cell group "or" PUCCH serving cell group ". That is, one serving cell group includes one PUCCH serving cell (e.g., PCell, or P-SCell with PUCCH transmission set), or one PUCCH serving cell and one or more non-PUCCH serving cells One or more SCells for which PUCCH transmission is not established). If PUCCH transmission is allowed to the UE in more than one P-SCell, it may be said that there are at least two serving cell groups including the serving cell group associated with the PUCCH on the PCell. It is assumed that various examples according to the present invention apply for one serving cell group (or for each serving cell group) for convenience of explanation. However, even when a serving cell group is not explicitly divided in a terminal in which a plurality of PUCCH serving cells are established, it is not excluded that various examples according to the present invention are applied.

As the PUCCH transmission format for HARQ-ACK transmission in the CA environment, PUCCH format 3 or PUCCH format 1b to which channel selection is applied can be used. The HARQ-ACK payload size to be transmitted through this PUCCH format may be determined based on parameters that are set semi-statically to the UE through higher layer signaling (e.g., RRC signaling). In the case of FDD, the number of serving cells set in the UE and the transmission mode in each of the serving cells (for example, whether or not the MIMO transmission mode is applied, and thus the number of codewords (or transmission blocks) The HARQ-ACK payload size may be determined based on the HARQ-ACK payload size. In the case of TDD, the number of serving cells set in the UE, the transmission mode in each serving cell, and the size of the bundling window (i.e., the number of downlink subframes associated with HARQ-ACK transmission in one uplink subframe) The HARQ-ACK payload size can be determined.

In the wireless communication environment, the UE may miss the scheduling information or data transmission transmitted by the Node B, or may erroneously determine that the UE has correctly received an error (i.e., it is supposed to be a NACK but incorrectly determined as an ACK). When such an error occurs, a difference may occur in the number of HARQ-ACK bits to be actually transmitted and the HARQ-ACK payload size derived by the UE, which may result in performance degradation. However, even if such an error occurs in the CA environment, there is no significant problem in terms of the efficiency of PUCCH transmission. That is, in the CA environment, scheduling is performed because the number of serving cells set for the UE is not large (i.e., the scenario in which two CCs are set in the UE in 3GPP LTE Release-10 where CA is first introduced) There is a difference in the HARQ-ACK payload size determined based on the number of HARQ-ACK bits to be actually transmitted and the parameters set semi-statically to the UE (i.e., the number of serving cells set to the UE) Even so, the difference was not great.

On the other hand, when the eCA currently being discussed is introduced, a maximum of 32 serving cells can be set to one UE. Therefore, the HARQ-ACK payload size is determined based on parameters set semi-statically through upper layer signaling , And if the PUCCH format is selected on the basis thereof, the inefficiency can be amplified. That is, even when a maximum of 32 serving cells are set in one UE, the number of serving cells in which a BS schedules (i.e., downlink allocation is performed) on one subframe may be less than 32 , PDSCH (collectively referred to simply as PDSCH) transmitted without PDSCH detection or (E) PDSCH indicated by (E) PDCCH detection, or DL SPS released ((E) PDCCH indicating the HARQ-ACK payload). Therefore, it may be considered not to base the number of serving cells to be set in the UE but to determine the HARQ-ACK payload size based on the number of serving cells actually scheduled (i.e., performing downlink allocation) .

As described above, a new scheme for determining the size of the HARQ-ACK payload is newly applied to the PUCCH format 4, and thus a new resource allocation scheme for the PUCCH format 4 is required. In the present invention, an efficient scheme for dynamically indicating a resource to which the PUCCH format 4 is allocated, a scheme for deriving a resource to which a UE allocates control information based on the resource allocation instruction, a control information Of the present invention will be described.

)을 포함)가 설정되는 것을 가정한다. 단말에게 설정된 하나의 자원 세트 중에서 어떤 PUCCH 포맷 4 자원(

)이 할당되는지에 대한 정보 및 관련 정보의 지시를 위해, (E)PDCCH 하향링크 DCI(예를 들어, DCI 포맷 1/1A/1B/1D/2/2A/2B/2C/2D) 포맷 내의 소정의 2 비트 필드가 이용될 수 있다. 예를 들어, SCell 상의 PDSCH를 스케줄링하는 PDCCH 또는 하향링크 SPS 해제를 지시하는 PDCCH 내의 TPC 명령 필드가 이용될 수 있다. 또는 EPDCCH를 통해서 DCI를 제공하는 경우에는, 하향링크 DCI 포맷 내의 HARQ-ACK 자원 오프셋 필드가 이용될 수도 있다. 이하의 예시에서는 설명의 간명함을 위해서 TPC 필드 또는 HARQ-ACK 자원 오프셋 필드를 이용하는 것으로 설명하지만, 본 발명의 범위가 이에 제한되는 것은 아니다. In the examples of the present invention described below, one resource set for PUCCH format 4 (i.e., a plurality of PUCCH format 4 resources (for example,

) Is assumed to be set. The PUCCH format 4 resources (

(E) PDCCH downlink DCI (e.g., DCI format 1 / 1A / 1B / 1D / 2 / 2A / 2B / 2C / 2D) format, Bit field of < / RTI > For example, the TPC command field in the PDCCH that instructs the PDCCH to schedule the PDSCH on the SCell or the downlink SPS release may be used. Or if the DCI is provided over the EPDCCH, the HARQ-ACK resource offset field in the downlink DCI format may be used. In the following example, the TPC field or the HARQ-ACK resource offset field is used for simplicity of description, but the scope of the present invention is not limited thereto.

Also, in the examples of the present invention described below, one set of resource indication values (RIV) for PUCCH format 4 semi-statically by an upper layer (e.g., RRC) Lt; RTI ID = 0.0 > RIV) < / RTI > RIV is information indicating the starting point (RB _START ) of the RB to be a resource allocation target and the number of RBs (or lengths) (L _CRBs ) allocated consecutively. It is determined whether the RB corresponding to the RB start point in the RBs allocated consecutively is the lowest index (i.e., whether one or more RBs are allocated starting from the RB of the lowest index, in order of increasing index) A clear reference to the RB starting point is required since the same RIV value can indicate different RB assignments, depending on whether one or more RBs are allocated starting with the highest indexed RB and decreasing the index. In the present invention, in the direction from the both frequency edges to the center (or DC) direction (hereinafter referred to as INWARD direction) of the system bandwidth from the RB starting point, or from the center (or DC) (In other words, in a direction in which the absolute value of the frequency decreases) in the uplink resource structure as shown in FIG. 5, It is assumed that the assignment is determined. However, the scope of the present invention is not limited to this, and the direction of the RB allocation for the PUCCH format 4 may be changed from the uplink resource structure as shown in FIG. 5 to the OUTWARD direction ) RB allocation may be determined.

FIG. 9 is a view for explaining an example of PUCCH format 4 resource allocation according to the present invention.

) 및 RIV가 제공될 수 있다. 여기서, PUCCH 포맷 4 전송에 대해서 전송 다이버시티가 설정되는 경우(예를 들어, 2 개의 안테나 포트가 설정되는 경우), 안테나 포트 인덱스(즉,

)의 각각에 대해서 PF4 자원 인덱스가 시그널링될 수 있다. As information related to the resource allocation of the PUCCH format 4 (hereinafter, PF4), the PF4 resource index

) And RIV may be provided. Here, when transmission diversity is set for PUCCH format 4 transmission (for example, when two antenna ports are set), the antenna port index (i.e.,

The PF4 resource index can be signaled.

) 및 RIV의 매핑 관계를 나타낸다. Table 5 below shows values of a TPC command field (hereinafter referred to as TPC) for a PUCCH or a value of a HARQ-ACK resource offset field (HRO) and a value of a PUCCH format 4 resource index

) And RIV.

As shown in Table 5, the PUCCH resource index and RIV can be jointly encoded and indicated by the value of the TPC or HRO field. As shown in Table 5, the RIV value indicated according to the TPC or HRO value may correspond to any one of the RIV sets set by the upper layer. Here, the RIV set may include RIVs corresponding to the number of all cases of the PF4 resource allocation pattern, but RIV values corresponding to the number of some of them may be included. For example, four RIV values may be set by the upper layer as a set of RIVs to the UE, and one of the RIV values may be indicated via TPC or HRO.

=

). 이 경우, 파라미터

는 별도로 정의되지 않을 수도 있다. If PF4 is set for the terminal and the PF4 resource set is set, the value of the TPC or HRO field can indicate which PF4 resource is used. If the structure of PF4 is Type 1 (e.g., an extension of the structure of PF3, see FIG. 7), then a set of resources for PF3 may be used as a set of resources for PF4

=

). In this case,

May not be defined separately.

If the PF4 structure is type 1, RIV can indicate from which RB to which RBs are allocated for PF4. That is, the TPC or the HRO can indicate a specific RIV among the set RIV set in the upper layer.

The RIV for PF4 (i.e., RIV _PUCCHformat4 ) can be defined as Equation (3) below.

는 상위 계층 시그널링에 의해 셀-특정으로 설정될 수 있으며, PUCCH 포맷 2/2a/2b(이하, PF2/2a/2b)에 의해서 사용될 수 있는(available for use) 대역폭이며,

(즉, 하나의 RB내의 부반송파 개수)의 정수배의 형태로 표현될 수 있다. RB_START 는 PF4를 위해 할당되는 RB의 시작점을 나타내고, L_CRBs는 연속적으로 할당되는 RB의 개수(또는 길이)를 나타낸다. 또한,

는 플로어(floor) 연산으로서,

는 x를 초과하지 않는 최대의 정수(즉, x 이하의 최대의 정수)를 의미한다.here,

Can be set to be cell-specific by higher layer signaling and is available for use by PUCCH format 2 / 2a / 2b (hereinafter PF2 / 2a / 2b)

(I.e., the number of subcarriers in one RB). RB _{START Represents} the starting point of the RB allocated for PF4, and L _CRBs represents the number (or length) of RBs allocated consecutively. Also,

Is a floor operation,

Quot; means the largest integer that does not exceed x (i.e., the largest integer less than or equal to x ).

내의 RB 들에 할당될 수 있다. 이 경우, 기지국은 각각의 PUCCH 포맷에 대해 할당되는 자원이 충돌하지 않도록 설정할 수 있다. In the case of Type 1 PF4, as in the example of FIG. 9, PF2 / 2a / 2b, PF3 and Type 1 PF4 all

Lt; RTI ID = 0.0 > RBs < / RTI > In this case, the base station can set such that the resource allocated for each PUCCH format does not collide.

)이, PF4가 할당될 수 있는 자원 영역을 지시하는 것으로 재사용 또는 해석되고(즉,

값이 지시하는 자원 영역에 할당될 수 있는 PUCCH 포맷에는 PF2/2a/2b, PF3 및 PF4가 모두 포함될 수 있음), RIV 값을 통해서 해당 자원 영역 내에서 PF4가 실제로 할당되는 자원 영역(즉, 실제 PF4 전송을 위해 제어 정보가 매핑되는 자원 영역)을 지시할 수 있다.That is, in the example of FIG. 9, a value indicating the cell-specific region in which the PF2 or PF3 resource is allocated (i.e.,

) Is reused or interpreted as indicating a resource region to which PF4 can be allocated (i.e.,

A PUCCH format that can be assigned to a resource area indicated by a value may include both PF2 / 2a / 2b, PF3 and PF4), a resource area in which PF4 is actually allocated in the corresponding resource area A resource region to which control information is mapped for PF4 transmission).

A terminal that has determined RIV based on the value of TPC or HRO may determine RB _START and L _CRBs Value can be derived. Here, it is assumed that the RB allocation is determined in the INWARD direction (i.e., in the direction in which the absolute value of the frequency decreases).

In this way, it is necessary to determine the RB _START and L _CRBs values from the RIV value and further determine the precise slot location for PF4 resource allocation.

FIG. 10 is a diagram for explaining a slot determination method in which PF4 resources are allocated. FIG.

)에 의해서 결정될 수 있다.The slot position to which the PF4 resource is allocated is calculated using the PF4 resource index (

). ≪ / RTI >

은 하나의 서브프레임의 첫 번째 슬롯(슬롯 인덱스가 0부터 시작하는 경우 짝수 번째 슬롯)에 적용되는 확산 인자(spreading factor)의 값이며, 직교커버코드(OCC)의 적용에 따른 다중화 용량(multiplexing capacity)를 의미할 수 있다. 타입-1 PF4와 같이 PF3의 구조를 따르는 경우에는 일반적인 슬롯에서의 확산 인자 값은 5로 주어지지만, SRS 전송으로 인한 짧은 PF4 포맷이 사용되는 경우에는 확산 인자의 값이 4로 주어질 수 있다. here

Is a value of a spreading factor applied to the first slot of one subframe (an even slot if the slot index starts from 0) and is a value of a spreading factor applied to the multiplexing capacity ). ≪ / RTI > In the case of following the structure of PF3, such as Type-1 PF4, the spreading factor value in a general slot is given as 5. However, when a short PF4 format due to SRS transmission is used, the spreading factor value may be given as 4.

는 별도로 정의되지 않고

=

에 따라서 상기 수학식 5에서 m 값이 결정될 수 있다. Further, in case of Type-1 PF4, since the resource set for PF3 can be used as a resource set for PF4 as described above,

Is not defined separately

=

The value of m may be determined according to Equation (5).

When the m value is derived as described above, the PRB allocation position can be determined according to the value of m as shown in FIG. This m value may indicate which PRB is assigned PF4 from the frequency edge (i.e., both ends of the system bandwidth) in each slot in one subframe.

On the other hand, in the case of Type-2 PF4, since PF4 is not allocated to the PUCCH region, the value of m may not be required.

), PF4에 의해서 사용될 수 있는 RB 내에서 PF4가 할당되는 RB의 시작점(RB_START), 연속하는 RB의 개수(또는 길이) (L_CRBs), 할당되는 슬롯을 결정하는 인자(m)가 제공되면, 최종적으로 슬롯 인덱스 n _s에서 PF4를 위해서 사용되는 (즉, 실제 PF4 전송을 위해 제어 정보가 매핑되는) PRB 인덱스는 아래의 수학식 6에 따라서 결정될 수 있다. The number of RBs that can be used by PF4 (

), The starting point (RB _START ) of the RB to which PF4 is allocated in the RB that can be used by PF4, the number (or length) L _CRBs of consecutive RBs, and the factor m for determining the slot to be allocated , (which maps the control information to the other words, the actual transmission PF4) finally used for PF4 in slot index n _s PRB index it may be determined according to equation (6) below.

값은 연속적으로 L_CRBs 의 개수만큼 결정된다. 이러한 L_CRBs 개의

값들은, PF4를 위해 할당되는 (즉, 실제 PF4 전송을 위해 제어 정보가 매핑되는) 복수개의 물리적인 자원을 지시한다. Here, mod is a modulo operation, and A mod B means a remainder obtained by dividing A by B. The PRB index determined according to equation (6)

Values are consecutively L _CRBs As shown in FIG. These L _CRBs doggy

Values indicate a plurality of physical resources allocated for PF4 (i.e., control information is mapped for actual PF4 transmission).

11 and 12 are diagrams for explaining further examples of PUCCH format 4 resource allocation according to the present invention.

를 재사용하는 대신, 새로운 파라미터 N ⁽⁴⁾ _PUCCH,RB 가 상위계층 시그널링을 통해서 반-정적으로 단말에게 설정될 수도 있다. 즉, N ⁽⁴⁾ _PUCCH,RB 는 PF4에 의해서 사용될 수 있는(available for use) 대역폭을 나타내는 파라미터이다. 예를 들어, N ⁽⁴⁾ _PUCCH,RB 는 단말-특정으로 설정될 수 있고, N ⁽⁴⁾ _PUCCH,RB 의 값은 N ⁽⁴⁾ _PUCCH,RB ≤

으로 설정될 수도 있다. 그러나, 본 발명의 범위가 이에 제한되는 것은 아니며,

와 별개의 값으로 N ⁽⁴⁾ _PUCCH,RB 의 값이 설정될 수도 있다. For the PF4 resource allocation as in the example of FIG. 9

The new parameter N ⁽⁴⁾ _{PUCCH, RB} may be semi-statically set to the terminal via higher layer signaling. That is, N ⁽⁴⁾ _{PUCCH, RB} is a parameter indicating available bandwidth for use by PF4. For example, N ⁽⁴⁾ _{PUCCH, RB} can be set to UE-specific, N ⁽⁴⁾ _PUCCH, the value of _RB is N ⁽⁴⁾ _PUCCH,

Lt; / RTI > However, the scope of the present invention is not limited thereto,

And values of N ⁽⁴⁾ _{PUCCH and RB} may be set to values different from those of _{PUCCH and RB} .

In addition, N ⁽⁴⁾ _{PUCCH, RB} is involved in the determination of the PRB region that can be used by PF4, the PRB region that can be used by PF4 is the region that can be used by PF2 / 2a / 2b, PF3, (For example, in an area that can be used by the PUCCH format 1 / 1a / 1b and / or in a PUSCH area) irrespective of the area that can be used by PF2 / 2a / 2b, PF3 Area.

N ⁽⁴⁾ _{PUCCH, RB} is set to the UE, the RIV for PF4 (i.e., RIV _PUCCHformat4 ) can be defined as Equation (7).

N ^{(4) The} position on the physical resource of the number of RB (s) determined by _{PUCCH, RB} can be indicated or determined by the new parameter N ⁽⁴⁾ _{RB, START} . N ⁽⁴⁾ _{RB, START} can be semi-statically set to the terminal by the upper layer.

For example, as in the examples of FIGS. 11 and 12, N ⁽⁴⁾ _{PUCCH in the} INWARD direction (i.e., in the direction in which the absolute value of the frequency decreases ⁾ _{, RB} The start positions of the _RBs can be indicated or determined by N ⁽⁴⁾ _{RB, START} .

In the case of a type -1 PF4, the PRB position to N ⁽⁴⁾ _{RB, START} is indicated as the example of Figure 11 can be set to a value corresponding to the PRB in PUCCH region location (e.g., N ⁽⁴⁾ _{RB , START} + N ⁽⁴⁾ _{PUCCH, RB} May be set to be equal to or less than the size of the PUCCH area (i.e., the number of PRBs allocated to the PUCCH area)).

In the case of Type-2 PF4, N ⁽⁴⁾ _{RB, START} may be set to a value corresponding to the PRB position of the boundary with the PUCCH region in the PUSCH region as in the example of FIG.

로 대체된 경우에 해당할 수 있다.The example of FIG. 9 is N ⁽⁴⁾ _{RB, START in} the example of FIGS. 11 and 12 Value is always 0 (therefore N ⁽⁴⁾ _{RB, START} need not be set), N ⁽⁴⁾ _{PUCCH, RB} end

As the case may be.

를 N ⁽⁴⁾ _PUCCH,RB 으로 대체한 수학식에 따라서 결정되는) RB_START 및 L_CRBs 값에 따라서, PF4가 할당되는 (즉, 실제 PF4 전송을 위해 제어 정보가 매핑되는) 자원 위치가 결정될 수 있다. 즉, 도 11 및 도 12의 예시는 N ⁽⁴⁾ _PUCCH,RB 에 의해서 지시되는 PF4에 의해서 사용될 수 있는 RB의 개수가 4개이고, RIV로부터 유도되는 RB_START 에 의해서 결정되는 RB 시작 위치가 두 번째 RB이고, L_CRBs 에 의해서 결정되는 RB 개수가 2개인 경우에 해당한다. N ⁽⁴⁾ _{PUCCH, RB} (S) that can be used by PF4 indicated by < RTI ID = 0.0 >

The N ⁽⁴⁾ _{PUCCH, RB} RB _START < / RTI > and L _CRBs < _{RTI ID = 0.0 >} Depending on the value, the resource location to which PF4 is assigned (i.e., the control information is mapped for the actual PF4 transmission) can be determined. That is, the examples of FIGS. 11 and 12 are N ⁽⁴⁾ _{PUCCH, RB} The number of RBs that can be used by PF4 indicated by RB is 4, the RB start position determined by RB _START derived from RIV is the second RB, and L _CRBs The number of RBs determined by the number of RBs is two.

값에 기초하여 결정되는 m 값으로부터 어떤 슬롯의 PRB 영역에 PF4가 할당되는지가 결정되므로 (상기 수학식 5 참조), 기지국은 단말이 PF4를 위해서 사용할 자원 위치를 동적으로 지시할 수 있다. 한편, 타입-2 PF4의 경우에는 m 값이 요구되지 않을 수도 있다. Also,

The base station can dynamically indicate the resource location to be used for the PF4 by the base station, as shown in Equation (5), from which the PF4 is allocated to the PRB region of the slot from the m value determined based on the value. On the other hand, in the case of Type-2 PF4, the value of m may not be required.

That is, the starting point _RB ( _RB ) of the RB to which PF4 is allocated in the RB that can be used by the starting point ( N ⁽⁴⁾ _{RB, START} ) and the number N ⁽⁴⁾ _START), when determining the number of consecutive RB (or length) (L _CRBs), allocated slot factor (m) is provided, which is finally used for PF4 in slot index n _s (that is, the actual PF4 transfer The PRB index for which the risk control information is mapped may be determined according to Equation (8) below.

In the examples described with reference to Figs. 9 to 12, the information related to scheduling information or configuration parameters (e.g., the frame structure of the PUCCH serving cell, the number of serving cells set for the UE, the HARQ- At least one of a parameter for simultaneous transmission, a size of an uplink control information bit to be transmitted, a number of serving cells in which downlink transmission is scheduled, a transmission mode in each of serving cells, or a number of transmission blocks scheduled in each serving cell) The PUCCH format can be dynamically determined as one of PF1 / 1a / 1b, PF2 / 2a / 2b, PF3, or PF4. If it is determined to use PF4, the resources for PF4 can be determined dynamically, as in the examples described with reference to Figures 9-12.

Additionally, the PUCCH format used by the terminal may be dynamically indicated by the base station without dynamically determining the PUCCH format based on the relevant information, scheduling information or configuration parameters.

For example, in addition to the PUCCH resource index and RIV, the PUCCH format may be dynamically indicated via the TPC or HRO field of the downlink DCI format. This example is a case in which the PUCCH format is indicated by TPC or HRO in addition to the example in Table 5, and can be expressed as shown in Table 6 or Table 7 below.

As shown in Tables 6 and 7, the PUCCH resource index, RIV, and PUCCH format indicator may be jointly encoded and indicated by the value of the TPC or HRO field.

Table 6 above shows a case where one of PF3 or PF4 is indicated through TPC or HRO. Table 7 above is an example that any type of PF4 can be indicated via TPC or HRO if both types of PF4 (see Figures 7 and 8) are all supported. The above Tables 6 and 7 are merely illustrative and specific values of the TPC or HRO fields may indicate different PUCCH formats (e.g., 00 and 01 indicate PF3, 10 and 11 indicate PF4 Case, etc.). However, when PF3 is indicated, the RIV corresponding to the value of TPC or HRO may be interpreted as invalid for the corresponding terminal.

When dynamically and explicitly instructing the PUCCH format, both the UE and the base station can dynamically determine the PUCCH format clearly. If the terminal determines the PUCCH format based on the related information, the scheduling information, or the configuration parameter, if some of the information is not received or is erroneously received, the PUCCH format of the terminal expected by the base station, The PUCCH format to be used may be different, and in this case, the uplink control information directly connected to the system performance may not be transmitted or received correctly. Therefore, the base station can explicitly instruct the terminal to indicate the PUCCH format, and this problem can be prevented and the system performance can be improved.

13 to 15 are diagrams for explaining further examples of PUCCH format 4 resource allocation according to the present invention.

In the example of FIGS. 9-12 described above, the RB allocation is determined in a specific direction (e.g., in the INWARD direction (i.e., in the direction of decreasing absolute frequency value)) without any indication of the direction of PF4 resource allocation . That is, if an RB for PF4 is always allocated in one direction with respect to the RB starting point, the degree of freedom of RB allocation is restricted and resources including one or more RBs at the edge of the system bandwidth or at the boundary between the PUCCH region and the PUSCH region The pattern of allocation can be limited. Therefore, more flexible PUCCH resource allocation scheme is required to utilize resources more efficiently.

For example, according to the present invention, it is also possible to designate the RB start point in the INWARD direction (i.e., the direction in which the absolute value of the frequency decreases) or the OUTWARD direction (i.e., the direction in which the absolute value of the frequency increases) have.

For this purpose, in addition to the PUCCH resource index and the RIV (and also the PUCCH format), the resource allocation direction may be dynamically indicated through the TPC or HRO field of the downlink DCI format. Such an example may be referred to as the case where the PUCCH format is indicated by TPC or HRO in addition to the example of Tables 5, 6 or 7 above, and can be represented as Table 8 below (in addition to Table 8 below, Table 6 or 7 The PUCCH format may be indicated as shown in FIG.

As shown in Table 8, the PUCCH resource index, RIV, and resource allocation direction indicator (also, PUCCH format indicator) may be jointly encoded and indicated by the value of the TPC or HRO field.

또는 N ⁽⁴⁾ _PUCCH,RB 및 N ⁽⁴⁾ _RB,START 에 기초하여 PF4에 의해서 사용될 수 있는 RB 영역이 결정될 수 있고, RB 할당 방향 (INWARD 또는 OUTWARD) 및 RIV 값에 기초하여 PF4에 의해서 사용될 수 있는 RB 영역 내에서 PF4가 할당되는 RB의 시작점(RB_START), 연속하는 RB의 개수(또는 길이) (L_CRBs)이 결정될 수 있고, PF4 자원 인덱스(

)에 기초하여 PF4가 할당되는 슬롯을 결정하는 인자(m)가 결정될 수 있다. Accordingly, as in the examples of Figs. 13 to 15,

Or RB regions that can be used by PF4 based on N ⁽⁴⁾ _{PUCCH, RB} and N ⁽⁴⁾ _{RB, START} can be determined and used by PF4 based on the RB allocation direction INWARD or OUTWARD and RIV value (RB _START ), the number of consecutive RBs (or lengths) (L _CRBs ) to which PF4 is allocated in the RB area, and the PF4 resource index

(M) that determines the slot to which PF4 is allocated can be determined.

개의 RB 중에서 시스템 대역폭의 에지에 가장 가까운 (즉, 주파수 절대값이 가장 큰) PRB로 결정될 수 있고, RB 할당 방향이 OUTWARD으로 지시되는 경우에는 RIV에 의해서 유도되는 RB_START가

개의 RB 중에서 시스템 대역폭의 에지로부터 가장 먼 (즉, 주파수 절대값이 가장 작은) PRB로 결정될 수 있다. 또한, 도 14 및 도 15의 예시에서와 같이 RB 할당 방향이 INWARD으로 지시되는 경우에는 RIV에 의해서 유도되는 RB_START가 N ⁽⁴⁾ _PUCCH,RB 개의 RB 중에서 시스템 대역폭의 에지에 가장 가까운 (즉, 주파수 절대값이 가장 큰) PRB로 결정될 수 있고, RB 할당 방향이 OUTWARD으로 지시되는 경우에는 RIV에 의해서 유도되는 RB_START가 N ⁽⁴⁾ _PUCCH,RB 개의 RB 중에서 시스템 대역폭의 에지로부터 가장 먼 (즉, 주파수 절대값이 가장 작은) PRB로 결정될 수 있다.For example, when the RB allocation direction is indicated as INWARD as in the example of FIG. 13, RB _START induced by RIV

The PRB that is closest to the edge of the system bandwidth (i.e., the absolute value of the frequency is the largest) among the RBs can be determined. If the RB allocation direction is indicated by OUTWARD, RB _START induced by RIV

The PRB that is farthest from the edge of the system bandwidth (i.e., the absolute value of the frequency is the smallest) among the RBs can be determined. 14 and 15, when the RB allocation direction is indicated as INWARD, the RB _START induced by RIV is N ⁽⁴⁾ _{PUCCH, the RB} RB closest to the edge of the system bandwidth (i.e., and the frequency the absolute value can be determined to be the largest) PRB, RB when the assigned direction indicated by OUTWARD, the RB _START induced by RIV N ⁽⁴⁾ _PUCCH, the furthest from the edge of the system bandwidth from the _RB of RB (i.e. , And the absolute value of the frequency is the smallest).

Or, it may dynamically indicate the PUCCH resource index, the number of RBs for PUCCH transmission, and the resource allocation direction (also in the PUCCH format) through the TPC or HRO field of the downlink DCI format. These examples can be represented as Table 9 below (in addition to Table 9 below, the PUCCH format may be indicated as in Table 6 or 7).

As shown in Table 9, the PUCCH resource index, N _CRBs , and direction indicator (also PUCCH format indicator) may be _jointly encoded and indicated by the value of the TPC or HRO field.

또는 N ⁽⁴⁾ _PUCCH,RB 및 N ⁽⁴⁾ _RB,START 에 기초하여 PF4에 의해서 사용될 수 있는 RB 영역이 결정될 수 있고, RB 할당 방향 (INWARD 또는 OUTWARD) 및 PRB 개수 값(

)에 기초하여 PF4에 의해서 사용될 수 있는 RB 영역 내에서 PF4가 할당되는 RB가 결정될 수 있고, PF4 자원 인덱스(

)에 기초하여 PF4가 할당되는 슬롯을 결정하는 인자(m)가 결정될 수 있다. Accordingly, as in the examples of Figs. 13 to 15,

Or N ⁽⁴⁾ _{PUCCH, RB,} and N ⁽⁴⁾ _RB, RB can be determined this area to be used by the PF4 based on the _START, RB assignment direction (INWARD or OUTWARD) and PRB number of the values (

), The RB to which PF4 is allocated in the RB region that can be used by PF4 can be determined, and the PF4 resource index (

(M) that determines the slot to which PF4 is allocated can be determined.

)를 통해서 연산된 m (즉, 수학식 5에 따라 결정된 m) 값이 될 수 있다. 즉, RIV 값으로부터 유도되는 RB_START 없이, 기준 PRB 위치로부터 INWARD 또는 OUTWARD 방향으로

개의 PRB가 PF4를 위해 할당될 수 있다. Here, the reference PRB position at which the RB allocation direction for PF4 starts in the RB region that can be used by PF4 is indicated by the indicated PUCCH resource index

(I.e., m determined according to Equation (5)) calculated through Equation (5). That is, without RB _START derived from the RIV value, from the reference PRB position in the INWARD or OUTWARD direction

Lt; RTI ID = 0.0 > PRB < / RTI >

또는 N ⁽⁴⁾ _PUCCH,RB 개의 RB 중에서 시스템 대역폭의 에지에 가장 가까운 (즉, 주파수 절대값이 가장 큰) PRB로 결정될 수 있고, RB 할당 방향이 OUTWARD인 경우에

또는 N ⁽⁴⁾ _PUCCH,RB 개의 RB 중에서 시스템 대역폭의 에지로부터 가장 먼 (즉, 주파수 절대값이 가장 작은) PRB로 결정될 수 있다. Alternatively, the starting point of the RB to which PF4 is allocated in the RB area that can be used by the PF4 is, when the RB allocation direction is INWARD

Or N ⁽⁴⁾ _{PUCCH, the} PRB that is closest to the edge of the system bandwidth (i.e., the absolute value of the frequency is the largest) among the RB RBs, and the RB allocation direction is OUTWARD

Or N ⁽⁴⁾ _{PUCCH, which} is the farthest from the edge of the system bandwidth (i.e., the smallest absolute frequency value) among the _RB RBs.

)를 동적으로 지시할 수 있다. 하향링크 DCI 포맷 내의 TPC 또는 HRO 이외의 1 비트를 통해(예를 들어, 반송파 지시자, 자원 할당 헤더, 자원 블록 할당, MCS, HARQ 프로세스 번호, 신규데이터지시자(NDI), 리던던시 버전(RV), 또는 하향링크 할당 인덱스(DAI)과 같이 PDCCH DCI 내에 정의된 필드 중의 1 비트를 재사용하거나, 새롭게 정의되는 필드의 1 비트를 사용하여) 자원 할당 방향(예를 들어, INWARD 또는 OUTWARD)을 지시할 수도 있다. 이러한 예시는 아래의 표 10 및 표 11과 같이 나타낼 수 있다.Additionally, through the TPC or HRO field of the downlink DCI format, the PUCCH resource index, the number of RBs for PUCCH transmission (

) Can be dynamically indicated. (E.g., a carrier indicator, a resource allocation header, a resource block allocation, an MCS, a HARQ process number, a new data indicator (NDI), a redundancy version (RV), or a data structure) via one bit other than TPC or HRO in the downlink DCI format (E.g., INWARD or OUTWARD) by reusing one bit of a field defined in the PDCCH DCI, such as a downlink allocation index (DAI), or using one bit of a newly defined field) . These examples can be shown in Tables 10 and 11 below.

) 및 PF4 자원 할당에 대한 방향 지시자가 동적으로 지시되는 경우, 슬롯 인덱스 n _s에서 PF4를 위해서 사용되는 PRB 인덱스는 아래의 수학식 9에 따라서 결정될 수 있다.As described above, instead of dynamically indicating RIV, the number of RBs for PUCCH transmission (

) And if the direction indicator for the PF4 resource allocation is indicated by a dynamic, PRB indexes used for PF4 in slot index n _s can be determined according to Equation (9) below.

값은 방향지시자의 값으로서, INWARD이면 1 값을 가지고, OUTWARD이면 -1 값을 가질 수 있다. 즉, 지시된 PUCCH 자원인덱스를 통해서 연산된 m 값이 기준 PRB가 되고, 기준 PRB 위치로부터 INWARD 또는 OUTWARD 방향으로

개의 PRB가 PF4를 위해 할당(즉, 실제 PF4 전송을 위해 제어 정보가 매핑)될 수 있다.In Equation (9), m may be determined by Equation (5).

The value is the value of the direction indicator. If INWARD has a value of 1, OUTWARD has a value of -1. That is, the m value calculated through the indicated PUCCH resource index becomes the reference PRB, and from the reference PRB position in the INWARD or OUTWARD direction

≪ / RTI > PRBs may be allocated for PF4 (i.e., control information mapped for actual PF4 transmission).

)로부터 동적으로 시그널링될 수도 있다. 이 경우, 하향링크 DCI 포맷의 TPC 또는 HRO는 아래의 표 12와 같이 PF4 자원 인덱스(

)을 지시할 수 있다.Additionally, instead of the N ⁽⁴⁾ _{PUCCH, RB} indicating the number of RBs that can be used by PF4 as in the above examples, is set by the upper layer, the PF4 resource index

≪ / RTI > In this case, the TPC or HRO of the downlink DCI format is a PF4 resource index (

).

또는 N ⁽⁴⁾ _PUCCH,RB 및 N ⁽⁴⁾ _RB,START 에 기초하여 PF4에 의해서 사용될 수 있는 RB 영역이 결정될 수 있다. 여기서, PF4에 의해서 사용될 수 있는 영역 내에서, "하나의" PF4에 대해서 허용 가능한 크기(즉, "하나의" PF4에 의해서 사용될 수 있는 최대 RB 개수)를 결정하는 방안이 요구된다. In the examples described above,

Or RB regions that can be used by PF4 based on N ⁽⁴⁾ _{PUCCH, RB} and N ⁽⁴⁾ _{RB, START} . Here, within the area that can be used by PF4, there is a need to determine an allowable size (i.e., the maximum number of RBs that can be used by "one" PF4) for "one" PF4.

In the present invention, the maximum number of RBs (i.e., n ⁽⁴⁾ _{PUCCH, RBmax} ) that can be used by the "one" PF4 is the maximum value of the number of control information bits that can be transmitted through PF4 64 bits in the case of TDD, and 128 bits in the case of TDD). For example, the values of n ⁽⁴⁾ _{PUCCH and RBmax} may be three RBs in case of FDD and six RBs in case of TDD. However, this is for illustrative purposes only and is not intended to be limiting.

가 PF4 자원 인덱스(

) 및 n ⁽⁴⁾ _PUCCH,RBmax 으로부터 결정될 수 있다. 이러한 예시는 아래의 수학식 10과 같이 나타낼 수 있다.In this case, the number of RBs allocated for one PF4 (i.e., the control information is mapped for actual PF4 transmission)

Is the PF4 resource index (

) And n ⁽⁴⁾ _{PUCCH, RBmax} . Such an example can be expressed by Equation (10) below.

는 안테나 포트 인덱스

에 대한 PF4를 위해서 할당되는 RB 개수이다. In Equation (10) or Equation (11)

Antenna port index

Lt; RTI ID = 0.0 > PF4 < / RTI >

가 OCC 인덱스(

) 및 n ⁽⁴⁾ _PUCCH,RBmax 으로부터 결정될 수도 있다. 이러한 예시는 아래의 수학식 12 또는 수학식 13과 같이 나타낼 수 있다.Also, the number of RBs allocated for PF4 (i.e., the control information is mapped for actual PF4 transmission)

Is the OCC index (

) And n ⁽⁴⁾ _{PUCCH, RBmax} . Such an example can be expressed by Equation (12) or (13) below.

는 타입-1 PF4에 대한 OCC 인덱스 값에 해당할 수 있다. OCC는 하나의 PRB 내에서 복수의 PUCCH 전송을 다중화하기 위한 값이며, 아래의 수학식 14에 의해서 유도될 수 있다.In the above equations (12) and (13)

May correspond to an OCC index value for type-1 PF4. OCC is a value for multiplexing a plurality of PUCCH transmissions in one PRB, and can be derived by Equation (14) below.

은 PF4 안테나 포트 인덱스

에 대한 첫 번째 슬롯(즉, 슬롯 인덱스 0)에서의 OCC 인덱스 값이고,

은 PF4 안테나 포트 인덱스

에 대한 두 번째 슬롯(즉, 슬롯 인덱스 1)에서의 OCC 인덱스 값이다.

값은 두 번째 슬롯의 확산 인자(spreading factor)의 값이며, 하나의 PRB에서 다중화할 수 있는 최대 값을 의미한다.

값은 노멀 CP 서브프레임에는 5이다. 만약 SRS 전송이 존재하는 서브프레임에서 짧은 포맷(shortened format)이 사용되는 경우에는

값은 4이다. 즉, 해당 서브프레임에서 SRS 전송 여부에 따라 하나의 PRB에서 최대 다중화 용량이 결정될 수 있다. In Equation (14)

PF4 antenna port index

Is the OCC index value at the first slot (i.e., slot index 0)

PF4 antenna port index

Is the OCC index value at the second slot (i. E., Slot index 1).

The value is the value of the spreading factor of the second slot, which means the maximum value that can be multiplexed in one PRB.

The value is 5 in the normal CP subframe. If a shortened format is used in a subframe in which SRS transmission is present

The value is 4. That is, the maximum multiplexing capacity can be determined in one PRB depending on whether the SRS is transmitted in the corresponding subframe.

)를 통해서 연산된 m (즉, 수학식 5에 따라 결정된 m) 값이 될 수 있다. 즉, RIV 값으로부터 유도되는 RB_START 없이, 기준 PRB 위치로부터 INWARD 또는 OUTWARD 방향으로

개의 PRB가 PF4를 위해 할당될 수 있다. 또는, PF4에 의해서 사용될 수 있는 RB 영역 내에서 PF4가 할당되는 RB의 시작점은, RB 할당 방향이 INWARD인 경우에

또는 N ⁽⁴⁾ _PUCCH,RB 개의 RB 중에서 시스템 대역폭의 에지에 가장 가까운 (즉, 주파수 절대값이 가장 큰) PRB로 결정될 수 있고, RB 할당 방향이 OUTWARD인 경우에

또는 N ⁽⁴⁾ _PUCCH,RB 개의 RB 중에서 시스템 대역폭의 에지로부터 가장 먼 (즉, 주파수 절대값이 가장 작은) PRB로 결정될 수 있다. In the examples of Equations (10) to (13), the reference PRB position at which the RB allocation direction for PF4 starts in the RB region that can be used by PF4 is indicated by the indicated PUCCH resource index

(I.e., m determined according to Equation (5)) calculated through Equation (5). That is, without RB _START derived from the RIV value, from the reference PRB position in the INWARD or OUTWARD direction

Lt; RTI ID = 0.0 > PRB < / RTI > Alternatively, the starting point of the RB to which PF4 is allocated in the RB area that can be used by the PF4 is, when the RB allocation direction is INWARD

Or N ⁽⁴⁾ _{PUCCH, the} PRB that is closest to the edge of the system bandwidth (i.e., the absolute value of the frequency is the largest) among the RB RBs, and the RB allocation direction is OUTWARD

Or N ⁽⁴⁾ _{PUCCH, which} is the farthest from the edge of the system bandwidth (i.e., the smallest absolute frequency value) among the _RB RBs.

In the examples of Equations (10) to (13), the positions of the RB regions allocated for the PF4 from the reference PRB (i.e., the control information is mapped for the actual PF4 transmission) may be determined differently. In particular, in the examples of Equations (11) and (13), different RB regions may be determined depending on the value of k. The range of the k value may be {1,2, .., n ⁽⁴⁾ _{PUCCH, RBmax} -1}, and the value may be set by an upper layer.

) 또는 OCC 인덱스 (

)에 기초하여 방향 지시자가 결정될 수도 있다. 이러한 예시는 아래의 수학식 15 및 수학식 16과 같이 나타낼 수 있다.In the above examples, if the direction indicator for the RB allocation is not explicitly signaled, the PF4 resource index (

) Or OCC index (

The direction indicator may be determined. Such an example can be expressed by the following equations (15) and (16).

등의 파라미터에 의해서 결정되는 PF4를 위해서 할당되는(즉, 실제 PF4 전송을 위해 제어 정보가 매핑되는) 자원의 위치 및 크기를 적절하게 제어하는 것이 필요하다. 구체적으로, PUCCH를 통하여 전송되는 제어 정보(예를 들어, HARQ-ACK, SR(있다면), 또는 HARQ-ACK, SR(있다면) 및 주기적 CSI)의 비트 수는 서브프레임마다 동적으로 변경될 수 있고, 또한 그 변경되는 폭이 클 수 있다. 따라서, PF4의 물리적 링크에 대한 신뢰성을 유지하기 위해서는 제어 정보의 비트 수에 따라서 PF4를 위해 할당되는 PRB 개수를 적응적으로 변경할 필요가 있다. In the examples of the present invention described above, RIV or < RTI ID = 0.0 >

It is necessary to appropriately control the position and size of the resource allocated for PF4 (i.e., the control information is mapped for the actual PF4 transmission) determined by parameters such as < RTI ID = 0.0 > Specifically, the number of bits of control information (e.g., HARQ-ACK, SR (if), or HARQ-ACK, SR (if) and periodic CSI) transmitted via the PUCCH can be changed dynamically for each subframe , And the width of the change may be large. Therefore, in order to maintain the reliability of the physical link of the PF 4, it is necessary to adaptively change the number of PRBs allocated for the PF 4 according to the number of bits of the control information.

, 또는 PUCCH 자원 인덱스(

) 또는 OCC 인덱스 (

)에 의해서 유도되는

를 통해) 지시될 수 있다. 다만, 이는 단지 예시일 뿐이며, 만약 64 비트 보다 많은 양의 제어 정보를 PF4를 통해서 전송하는 것이 요구된다면, PF4에 의해서 사용가능한 RB의 개수는 3개 이상의 값을 가질 수도 있다. For example, PF3 transmits control information through one RB (one RB pair in one subframe), and the maximum number of bits is 22 bits. Reed Muller (RM) codes can be used for channel coding of control information. For example, considering the output bits (i.e., 48 bits) of a dual RM coder, one RB The code rate of the PF3 used is 22 bit / 48 bit = 0.458, and this code rate is the reliability provided by PF3. On the other hand, when the eCA is applied, since the maximum number of control information bits that can be transmitted in the FDD is 64 bits, PF4 must use at least three RBs so that the code rate (64/144 (= 48 * 3) = 0.45). Therefore, according to the number of control information bits to be transmitted through PF4, the number of RBs used for PF4 should be dynamically determined at 1 to 3. Accordingly, the number of RBs (e.g., n ⁽⁴⁾ _{PUCCH, RBmax} ) that can be used by the PF4 is set by the upper layer to 3 for the terminal in which the PF4 is set _, It should be appreciated that one, two, or three RBs per frame may be used dynamically (e.g., RPC indicated via TPC or HRO in the downlink DCI format,

, Or a PUCCH resource index (

) Or OCC index (

)

). ≪ / RTI > However, this is merely an example, and the number of RBs usable by PF4 may have three or more values if it is required to transmit control information over PF4 in excess of 64 bits.

16 is a diagram for explaining a method according to an example of the present invention.

, N ⁽⁴⁾ _PUCCH,RB , 또는 N ⁽⁴⁾ _RB,START 에 해당할 수 있다. In step S1610, the terminal can receive first information indicating a first resource region that can be used by the PF4 from the base station. Here, the first information may include parameters set by upper layer signaling, and in the examples described above

, N ⁽⁴⁾ _{PUCCH, RB} , or N ⁽⁴⁾ _{RB, START} .

In step S1620, the UE can receive the second information used for the determination of the second resource area to which the PF4 is allocated from the base station. Here, the second information may include dynamically indicated parameters via the DCI (e.g., via TPC, HRO or other fields in the downlink DCI format), and may include parameters such as RIV (RIV to RB _START And L _CRBs may be derived), a PUCCH format indicator (e.g., information indicating PF3, PF4, Type-1 PF4, or Type-2 PF4), a resource allocation direction indicator (e.g., INWARD or OUTWARD ( _E.g. , n ⁽⁴⁾ _{PUCCH, RBmax} ) that can be used for one PF4, the number of PRBs (e.g., N _CRBs ) to which one PF4 is assigned, (E.g., FDD / TDD setting, PF4 resource index, or OCC index). The maximum number of PRBs (e.g., n ⁽⁴⁾ _{PUCCH, RBmax} ) that can be used for one PF4 may be indicated through higher layer signaling or a predetermined value may be applied.

In step S1630, the terminal can determine the second resource area in the first resource area based on the first information and the second information.

In step S1640, the UE may map the uplink control information to the determined second resource area and transmit the uplink control information to the base station.

Although the above-described exemplary methods are represented by a series of acts for clarity of explanation, they are not intended to limit the order in which the steps are performed, and if necessary, each step may be performed simultaneously or in a different order. In addition, not all illustrated steps are necessary to implement the method according to the present invention.

The foregoing embodiments include examples of various aspects of the present invention. While it is not possible to describe every possible combination for expressing various aspects, one of ordinary skill in the art will recognize that other combinations are possible. Accordingly, it is intended that the invention include all alternatives, modifications and variations that fall within the scope of the following claims.

The scope of the present invention includes devices that process or implement operations in accordance with various embodiments of the present invention (e.g., the wireless device and its components described with reference to FIG. 1).

17 is a diagram for explaining a configuration of a processor according to the present invention.

The dynamic determination of the PUCCH format resources described in the various examples of the present invention can be handled by the upper layer processing unit 111 and the physical layer processing unit 112 of the processor 110 of the terminal 100. [

, 또는 N ⁽⁴⁾ _PUCCH,RB 및 N ⁽⁴⁾ _RB,START 에 의해서 결정될 수 있다. 상기

는 PUCCH 포맷 2, 2a, 2b 또는 3에 의해서 사용될 수 있는 자원블록(RB) 개수를 나타내고, 상기 N ⁽⁴⁾ _PUCCH,RB 는 PUCCH 포맷 4에 의해서 사용될 수 있는 RB 개수를 나타내고, 상기 N ⁽⁴⁾ _RB,START 는 PUCCH 포맷 4에 의해서 사용될 수 있는 RB의 시작점을 나타낼 수 있다.Referring to FIG. 17, the upper layer processing unit 111 may include a first resource region determination unit 1710. The first resource region determining unit 1710 may determine the first resource region based on the first information indicating the first resource region that can be used by the PUCCH. The first information may be provided to the terminal 100 via higher layer signaling (e.g., RRC signaling). Wherein the first information indicating the first resource area comprises:

, Or N ⁽⁴⁾ _{PUCCH, RB} and N ⁽⁴⁾ _{RB, START} . remind

Denotes a resource block (RB) number that can be used by the PUCCH formats 2, 2a, 2b or 3, wherein the N ⁽⁴⁾ _{PUCCH, RB} represents the RB number that can be used by the PUCCH format 4, wherein the N ^{(4 )} _{RB, START} can indicate the starting point of RB that can be used by PUCCH format 4.

The physical layer processing unit 112 may include a second resource region determination unit 1720 and an uplink control information transmission signal generation unit 1730.

The second resource area determination unit 1720 determines whether the PUCCH is allocated in the first resource region determined by the first resource region determination unit 2010 of the upper layer processing unit 111 (or considering the first information) It is possible to determine the second area based on the second information used for the determination of the second resource area. The second information may be dynamically indicated via the PDCCH DCI.

Here, the second resource region may correspond to a plurality of PRB pairs in one subframe. More specifically, the second information indicating a second resource region may include a RIV, PUCCH format indicator or the resource assignment at least one of the direction indicator., And the RB _START and L _CRBs derived from the RIV, the RB _START is And the L _CRBS may indicate the number of consecutive RBs of the second resource area. Alternatively, the information indicating the second resource area may include one or more of N _CRBs , n ⁽⁴⁾ _{PUCCH, RBmax} , PUCCH format indicator, or resource allocation direction indicator. The n ⁽⁴⁾ _{PUCCH and RBmax} represent the maximum number of RBs that can be allocated to the second resource area, and the N _CRBs may represent the number of consecutive RBs of the second resource area. The number of consecutive RBs of the second resource region may be derived from a PUCCH resource index or an orthogonal cover code (OCC) index included in the DCI. The resource allocation direction indicator of the second resource area may be derived from a PUCCH resource index or an orthogonal cover code (OCC) index included in the DCI. In addition, the information indicating the second resource area may be signaled by a TPC command field of the DCI.

The uplink control information transmission signal generation unit 1730 may generate uplink control information transmission signals by mapping uplink control information to a second resource region dynamically determined by the second resource region determination unit 2020 have. The generated signal may be transmitted to the base station 200 through the transceiver 130. In the present invention, the processor 110 maps the uplink control information to the second resource region determined based on the received first resource information and second resource information, and transmits the mapping to the base station.

The dynamic allocation of the PUCCH format resources described in various examples of the present invention can be handled by the upper layer processing unit 111 and the physical layer processing unit 112 of the processor 210 of the base station 200. [

, 또는 N ⁽⁴⁾ _PUCCH,RB 및 N ⁽⁴⁾ _RB,START 에 의해서 결정될 수 있다. 상기

는 PUCCH 포맷 2, 2a, 2b 또는 3에 의해서 사용될 수 있는 자원블록(RB) 개수를 나타내고, 상기 N ⁽⁴⁾ _PUCCH,RB 는 PUCCH 포맷 4에 의해서 사용될 수 있는 RB 개수를 나타내고, 상기 N ⁽⁴⁾ _RB,START 는 PUCCH 포맷 4에 의해서 사용될 수 있는 RB의 시작점을 나타낼 수 있다.Referring to FIG. 17, the upper layer processing unit 211 may include a first resource area allocation unit 1740. The first resource area assigning unit 1740 may generate first information indicating a first resource region that can be used by the PUCCH for transmitting uplink control information from the AT 100. [ The first information may be provided to the terminal 100 via higher layer signaling (e.g., RRC signaling). Wherein the first information indicating the first resource area comprises:

, Or N ⁽⁴⁾ _{PUCCH, RB} and N ⁽⁴⁾ _{RB, START} . remind

Denotes a resource block (RB) number that can be used by the PUCCH formats 2, 2a, 2b or 3, wherein the N ⁽⁴⁾ _{PUCCH, RB} represents the RB number that can be used by the PUCCH format 4, wherein the N ^{(4 )} _{RB, START} can indicate the starting point of RB that can be used by PUCCH format 4.

The physical layer processing unit 212 may include a second resource area assigning unit 1750 and an uplink control information identifying unit 1760.

The second resource area allocation unit 1740 allocates the PUCCH in the first resource area allocated by the first resource area allocation unit 1740 of the upper layer processing unit 211 (or considering the first information) The second information used for the determination of the second resource area can be generated. The second information may be dynamically indicated via the PDCCH DCI.

Here, the second resource region may correspond to a plurality of PRB pairs in one subframe. More specifically, the second information indicating a second resource region may include a RIV, PUCCH format indicator or the resource assignment at least one of the direction indicator., And the RB _START and L _CRBs derived from the RIV, the RB _START is And the L _CRBS may indicate the number of consecutive RBs of the second resource area. Alternatively, the information indicating the second resource area may include one or more of N _CRBs , n ⁽⁴⁾ _{PUCCH, RBmax} , PUCCH format indicator, or resource allocation direction indicator. The n ⁽⁴⁾ _{PUCCH and RBmax} represent the maximum number of RBs that can be allocated to the second resource area, and the N _CRBs may represent the number of consecutive RBs of the second resource area. The number of consecutive RBs of the second resource region may be derived from a PUCCH resource index or an orthogonal cover code (OCC) index included in the DCI. The resource allocation direction indicator of the second resource area may be derived from a PUCCH resource index or an orthogonal cover code (OCC) index included in the DCI. In addition, the information indicating the second resource area may be signaled by a TPC command field of the DCI.

The uplink control information confirmation unit 1760 may attempt to receive the uplink control information transmission signal through the PUCCH in the second resource region dynamically allocated by the second resource area allocation unit 1750. [ In the present invention, the processor 210 maps the uplink control information to the base station in the second resource region determined based on the first resource information and the second resource information allocated to the terminal And attempt to receive the uplink control information transmission signal on the second resource area.

In addition, the uplink control information check unit 1760 can check the received uplink control information. For example, the processor 210 of the base station 200 that has confirmed the HARQ-ACK information can determine whether to retransmit the downlink transmission, and the processor 210 of the base station 200, which has confirmed the SR information, 100 and the processor 210 of the base station 200 that has confirmed the CSI information may use the fed back channel state information for scheduling for the corresponding terminal 100. [

The operation of the processor 110 of the terminal 100 or the processor 210 of the base station 200 described above may be implemented by software processing or hardware processing or may be implemented by software and hardware processing. The scope of the present invention includes software (or an operating system, application, firmware, program, etc.) that enables an operation according to various embodiments of the present invention to be performed on a device or computer, It includes a possible medium.

While various embodiments of the present invention have been described with reference to 3GPP LTE or LTE-A systems, they may be applied to various mobile communication systems.

Claims (8)

A method for transmitting uplink control information in a wireless communication system,
Receiving first information from a base station indicating a first resource region that can be used by a physical uplink control channel (PUCCH);
Receiving from the BS second information used for determining a second resource region to which the PUCCH is allocated; And
Mapping the uplink control information to the second resource region determined based on the first information and the second information, and transmitting the mapped uplink control information to the base station,
Wherein the second resource area is included in the first resource area,
Wherein the first information is set by an upper layer,
And the second information is dynamically indicated through the downlink control information (DCI). The method according to claim 1,
And the second resource region corresponds to a plurality of PRB pairs in one subframe. The method according to claim 1,
The first resource region

, Or N ⁽⁴⁾ _{PUCCH, RB} and N ⁽⁴⁾ _{RB, START} ,
remind

Represents the number of resource blocks (RBs) that can be used by the PUCCH format 2, 2a, 2b or 3,
N ⁽⁴⁾ _{PUCCH, RB} denotes the number of RBs that can be used by PUCCH format 4,
And N ⁽⁴⁾ _{RB, START} denotes a starting point of an RB that can be used by the PUCCH format 4. The method according to claim 1,
Wherein the information indicating the second resource area includes at least one of an RIV, a PUCCH format indicator, or a resource allocation direction indicator,
RB _START and L _CRBs are derived from the RIV,
The RB _START indicates a starting point of the second resource area,
And the L _CRBS indicates the number of consecutive RBs of the second resource area. The method according to claim 1,
_Wherein the information indicating the second resource region includes at _{least one} of N _CRBs , n ⁽⁴⁾ _{PUCCH, RBmax} , PUCCH format indicator, or resource allocation direction indicator,
N ⁽⁴⁾ _{PUCCH, RBmax} denotes a maximum number of RBs that can be allocated to the second resource area,
And the N _CRBs indicates the number of consecutive RBs of the second resource region. The method according to claim 1,
Wherein the number of consecutive RBs of the second resource region is derived from a PUCCH resource index or an orthogonal cover code (OCC) index included in the DCI. The method according to claim 1,
Wherein the resource allocation direction indicator of the second resource region is derived from a PUCCH resource index or an orthogonal cover code (OCC) index included in the DCI. The method according to claim 1,
Wherein the information indicating the second resource area is signaled by a TPC command field of the DCI.

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