KR20120018040A - Wireless communication system and method for allocating resource of control channel thereof - Google Patents

Abstract

PURPOSE: Control channel resource allocation method and apparatus from a wireless telecommunication system are provided to offer the resource allocation method for a PUCCH for transmitting broadband UCI. CONSTITUTION: A control channel resource allocation method from a wireless telecommunication system comprises the following steps: setting the number of resource block for PUCCH(physical uplink control channel) format 2 and 3(501); assigning the obtained resource nPUCCHs for the PUCCH format 2 and 3 to each terminal from a base station(503); and transmitting a PDCCH and PDSCH(physical downlink shared channel) to the terminal when transmission target DL(downlink) data is generated(505).

Description

WIRELESS COMMUNICATION SYSTEM AND METHOD FOR ALLOCATING RESOURCE OF CONTROL CHANNEL THEREOF}

The present invention relates to a wireless communication system, and more particularly, to a method and system for allocating and determining resources for uplink control channel transmission of a user equipment in a system supporting carrier aggregation.

In recent mobile communication systems, orthogonal frequency division multiple access (OFDMA), or a similar method, is useful for high-speed data transmission in a wireless channel. Division Multiple Access (hereinafter referred to as SC-FDMA) is being actively researched. In the multiple access scheme as described above, data or control information of each user is distinguished by allocation and operation so that time-frequency resources for carrying data or control information for each user do not overlap each other, that is, orthogonality is established. . Currently, the 3rd Generation Partnership Project (3GPP), an asynchronous cellular mobile communication standard organization, has completed the standardization of Long Term Evolution (LTE), the next generation mobile communication system, and studies LTE-Advanced (LTE-A) system, which is an evolution of LTE. In the process. LTE and LTE-A systems operate based on orthogonal frequency division multiple access.

1 is a view showing a time-frequency domain transmission structure of a PUCCH in the LTE-A system according to the prior art. In other words, FIG. 1 is a view illustrating a time-frequency domain transmission structure of a physical uplink control channel (PUCCH), which is a physical control channel for transmitting uplink control information (UCI) to a base station by an LTE-A system. to be.

Uplink refers to a radio link through which a user equipment (UE) or mobile station (MS) transmits data or a control signal to a base station (eNode B or base station (BS)), and the downlink means a base station is a terminal. This refers to a wireless link that transmits data or control signals. And the UCI includes at least one of the following control information:

HARQ-ACK: If there is no error in downlink data received from a base station through a physical downlink shared channel (PDSCH), which is a downlink data channel to which a hybrid automatic repeat request (HARQ) is applied, the UE feeds back an acknowledgment (ACK). If there is an error, NACK (Negative Acknowledgment) is fed back.

Channel Status Information (CSI): A signal indicating a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), a Rank Indicator (RI), or a downlink channel coefficient. The base station sets a modulation and coding scheme (MCS) for data to be transmitted to the terminal from the CSI obtained from the terminal to an appropriate value, thereby satisfying a predetermined reception performance for the data. CQI represents the Signal to Interference and Noise Ratio (SINR) for the system wideband or some subbands, and is generally a form of MCS to satisfy certain predetermined data reception performance. It is expressed as PMI / RI provides precoding and rank information necessary for a base station to transmit data through multiple antennas in a system supporting multiple input multiple outputs (MIMO). Signals indicating downlink channel coefficients provide more detailed channel state information than CSI signals, but increase uplink overhead. In this case, the UE is previously notified of a reporting mode indicating which information is fed back, CSI configuration information on resource information on which resource to use, transmission period, etc. from the base station through higher layer signaling. . The terminal transmits the CSI to the base station using the CSI configuration information notified in advance.

Referring to FIG. 1, the horizontal axis represents the time domain and the vertical axis represents the frequency domain. The minimum transmission unit in the time domain is an SC-FDMA symbol 101, in which N _symb ^UL SC-FDMA symbols are gathered to form one slot 103 or 105. Two slots are gathered to form one subframe 107. The minimum transmission unit in the frequency domain is a subcarrier, and the total system transmission bandwidth 109 consists of a total of N _BW subcarriers. N _BW has a value proportional to the system transmission band.

The basic unit of resource in the time-frequency domain may be defined as an SC-FDMA symbol index and a subcarrier index as a resource element (RE). Resource blocks (111, 117, RB) are defined as N _symb ^UL contiguous SC-FDMA symbols in the time domain and N sc RB contiguous subcarriers in the frequency domain. Therefore, one RB is composed of N _symb ^UL x N _sc ^RB _Rs . In general, the minimum transmission unit for data or control information is in RB units. In the case of PUCCH, it is mapped to a frequency domain corresponding to 1 RB and transmitted during one subframe.

Referring to FIG. 1, specifically, N _symb ^UL = 7, N _sc ^RB = 12, and an example in which the number of RSs (Reference Signals) for channel estimation in one slot is N _RS ^PUCCH = 2. RS uses a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence. The CAZAC sequence is characterized by a constant signal strength and a zero autocorrelation coefficient. Cyclic Shift (CS) a predetermined CAZAC sequence by a value larger than the delay spread of the transmission path, thereby maintaining the orthogonality with the original CAZAC sequence. Therefore, it is possible to generate a CSed CAZAC sequence from which a maximum L orthogonality is maintained from the CAZAC sequence having a length L. The length of the CAZAC sequence applied to the PUCCH is 12 corresponding to the number of subcarriers constituting one RB.

UCI is mapped to SC-FDMA symbol to which RS is not mapped. 1 shows an example in which a total of 10 UCI modulation symbols 113 and 115 (d (0), d (1), ..., d (9)) are mapped to SC-FDMA symbols in one subframe, respectively. Each UCI modulation symbol is multiplied with a CAZAC sequence applying a predetermined Cyclic shift value for multiplexing with UCI of another UE and then mapped to an SC-FDMA symbol. PUCCH is subjected to frequency hopping in units of slots to obtain frequency diversity. The PUCCH is located at the outermost portion of the system transmission band, thereby enabling data transmission in the remaining transmission bands. That is, the PUCCH is mapped to the RB 111 located at the outermost part of the system transmission band in the first slot in the subframe, and is different from the RB 111 located at the outermost part of the system transmission band in the second slot. Mapped to RB 117. In general, the RB locations to which the PUCCH for transmitting HARQ-ACK and the PUCCH for transmitting CSI are mapped do not overlap each other.

One of the important things for providing high-speed wireless data service in cellular wireless communication system is support of scalable bandwidth. In one example, the LTE system may have various bandwidths such as 20/15/10/5/3 / 1.4 MHz. Therefore, service providers may select at least one of the bandwidths to provide a service, and there may be various types of terminals, such as those capable of supporting a maximum bandwidth of 20 MHz to only a minimum of 1.4 MHz bandwidth. In addition, the LTE-A system, which aims to provide a service of IMT-Advanced requirement level, may provide a broadband service up to a bandwidth of 100 MHz through LTE aggregation of carriers.

LTE-A system requires a wider band than LTE system for high-speed data transmission. At the same time, the backward compatibility of the LTE-A system is also important. That is, LTE terminals should also be able to access the LTE-A system and receive services. To this end, the LTE-A system divides the entire system band into subbands or component carriers (CCs) of a bandwidth that can be transmitted or received by the LTE terminal. The LTE-A system combines predetermined component carriers, and generates and transmits data for each component carrier. Accordingly, the transmission / reception process of the LTE system may be utilized for each component carrier to support high-speed data transmission of the LTE-A system.

2 is a diagram illustrating a configuration carrier of an LTE-A system according to the prior art. In more detail, FIG. 2 shows an example of configuring an LTE-A system by combining three component carriers for each of uplink and downlink.

Among the component carriers combined with a carrier, the component carrier as a reference is called a primary carrier or a primary component carrier (PCC) or an anchor component carrier. The component carrier that is not the primary carrier is called a secondary carrier or a secondary component carrier (SCC) or a non-anchor component carrier. Which component carrier is set as a primary carrier and operated by a base station through a higher layer signaling (higher layer signaling) to the terminal. In general, it is assumed that how many component carriers are combined is configured through higher signaling.

In the case of downlink, the primary carrier may be a reference component carrier for transmitting initial system information or higher signaling on the configured component carrier and controlling terminal mobility. In the case of uplink, a component carrier on which a PUCCH including the UCI of the UE is transmitted may be an uplink primary carrier.

2 shows an example in which downlink and uplink are combined and operated by three component carriers, and downlink component carrier # 0 and uplink component carrier # 0 are set to primary carriers of downlink and uplink, respectively. FIG. 2 illustrates an example of symmetric carrier aggregation in which the number of component carriers in the uplink and the number of component carriers in the downlink are the same, but asymmetric carrier combinations in which the number of component carriers in the uplink / downlink are different from each other. Asymmetric carrier aggregation is also possible. In the LTE-A system supporting carrier combining as described above, it is necessary to design a PUCCH capable of carrying a large capacity UCI to transmit HARQ-ACK or CSI corresponding to each downlink component carrier.

Therefore, it is necessary to define a PUCCH for transmitting a large UCI in the LTE-A system supporting carrier combining. An object of the present invention for solving the above problems is to define a PUCCH for transmitting a large capacity UCI in a wireless communication system constituting a broadband through carrier aggregation, and resource allocation method and apparatus for the PUCCH To provide.

In order to solve the above problems, the control channel allocation method of the base station according to the present invention maps uplink control channel resources for transmitting the first control information and uplink control channel resources for transmitting the second control information when the control channel is allocated. A process of setting a resource block to be used, a process of higher signaling the set resource block in common to all terminals, and transmitting an uplink control channel resource and the second control information for transmitting the first control information in the configured resource block Allocating an uplink control channel resource for each terminal and an uplink control channel resource for transmitting the allocated first control information or an uplink control channel resource for transmitting second control information to the corresponding terminal Including signaling.

 In addition, in order to solve the above problems, in the present invention, a method for acquiring a control channel of a terminal includes a resource block to which an uplink control channel resource for transmitting first control information and an uplink control channel resource for transmitting second control information are mapped. Acquiring an uplink control channel resource for transmitting the first control information or an uplink control channel resource for transmitting second control information from the obtained resource block.

Next, in order to solve the above problem, the control channel allocation system sets up a resource block to which an uplink control channel resource for first control information transmission and an uplink control channel resource for second control information transmission are mapped. The upper signaling to all terminals in common, and allocates an uplink control channel resource for transmitting the first control information and an uplink control channel resource for transmitting the second control information to each terminal in the configured resource block, A base station for notifying uplink control channel resources for transmitting the allocated first control information to the corresponding terminal through dedicated upper signaling, and for transmitting uplink control channel resources and second control information for transmitting the first control information from the base station. Obtaining a resource block to which an uplink control channel resource is mapped; It is configured in the terminal block to obtain an uplink control channel resources for the uplink control channel resources or the second control information for the first control information.

According to the present invention, by providing a method for transmitting a large capacity UCI and a resource allocation method for the PUCCH for large capacity UCI transmission, it supports the efficient operation of a wireless communication system constituting a broadband through carrier aggregation.

1 is a view showing a time-frequency domain transmission structure of a PUCCH of the LTE-A system according to the prior art.
2 is a diagram illustrating a configuration carrier of an LTE-A system according to the prior art.
3 is a diagram illustrating a PUCCH transmission structure of a block spread DFT-S-OFDM scheme according to the present invention.
4 is a diagram illustrating PUCCH resource mapping according to the first embodiment of the present invention.
5 is a diagram illustrating a base station procedure according to the first embodiment of the present invention.
6 is a diagram illustrating a terminal procedure according to a first embodiment of the present invention.
7 illustrates PUCCH resource mapping according to a second embodiment of the present invention.
8 is a diagram illustrating a base station procedure according to a second embodiment of the present invention.
9 is a diagram illustrating a terminal procedure according to a second embodiment of the present invention.
10 illustrates a PUCCH transmission structure of a block spread DFT-S-OFDM scheme according to a third embodiment of the present invention.
11 illustrates PUCCH resource mapping according to a fourth embodiment of the present invention.
12 is a diagram illustrating a base station procedure according to a fourth embodiment of the present invention.
13 is a diagram illustrating a terminal procedure according to a fourth embodiment of the present invention.
14 is a view showing a PUCCH transmission device of a terminal of the present invention.
15 is a diagram illustrating a PUCCH receiving apparatus of a base station of the present invention.
16 illustrates PUCCH resource mapping according to a fifth embodiment of the present invention.
17 is a diagram illustrating a base station procedure according to a fifth embodiment of the present invention.
18 is a diagram illustrating a terminal procedure according to a fifth embodiment of the present invention.
19 illustrates PUCCH resource mapping according to a sixth embodiment of the present invention.
20 is a diagram illustrating a base station procedure according to the sixth embodiment of the present invention.
21 is a view showing a terminal procedure according to a sixth embodiment of the present invention.
22 is a diagram illustrating PUCCH resource mapping according to the seventh embodiment of the present invention.
23 is a diagram illustrating a base station procedure according to the seventh embodiment of the present invention.
24 is a diagram illustrating a terminal procedure according to a seventh embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, embodiments of the present invention will be described in detail with the accompanying drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

In addition, in describing the embodiments of the present invention, an advanced E-UTRA (or LTE-A) system supporting carrier aggregation will be the main target, but the main points of the present invention are similar. Other communication systems having a technical background and a channel form may be applied with a slight modification without departing from the scope of the present invention, which may be determined by those skilled in the art. For example, the subject matter of the present invention can be applied to multicarrier HSPA supporting carrier combining.

An important aspect of the present invention is a physical uplink control channel (PUCCH) transmission structure for transmitting a large capacity UCI by a UE activated to set up and operate multiple carriers in a wireless communication system constituting a broadband through carrier aggregation. As a block spread DFT-S-OFDM transmission scheme, a PUCCH resource allocation and determination method is provided. The PUCCH structure to which the block spread DFT-S-OFDM transmission scheme is applied will be described with reference to FIG. 3.

3 is a diagram illustrating a PUCCH transmission structure of a block spread DFT-S-OFDM scheme according to the present invention.

Referring to FIG. 3, the block spread DFT-S-OFDM transmission method blocks-wise spreads a signal to be transmitted, adds multiplexing capability, and then performs Discrete Fourier Transform (DFT) and Inverse Fast Fourier Transform (IFFT) processing. This method increases the amount of information that can be transmitted. 3 illustrates an example in which N _symb ^UL = 7, N _RS ^PUCCH = 2 per slot, the block spread DFT-S-OFDM transmission scheme may be applied to other configurations. The terminal adds an error correction capability by channel coding 303 uplink control information (UCI) 301 such as HARQ-ACK or channel state information (CSI) to be transmitted. The channel coding 303 may further include a rate matching operation or an interleaving operation. The terminal further applies scrambling 305 to protect the UCI signal from the effect of inter-cell interference. Next, the terminal modulates the scrambled signal (307) so that d (0), d (1),... , M _symb modulation symbols of d (M _symb -1) are generated. Reference numerals 309 and 311 denote modulation symbols generated when M _symb = 24. Half of the modulation symbols from d (0) to d (11) 309 among the modulation symbols are mapped to slot # 0 313 which is the first slot of the subframe in which the PUCCH is transmitted. And the modulation symbols of the other half from d (12) to d (23) (311) is mapped to slot # 1 (315) which is the second slot. Each slot 313, 315 includes a resource block (RB) 317, and the modulation symbols are mapped to the RB 317 included in each slot through the PUCCH signal processor 319. The PUCCH signal processor 319 includes a block-wise multiplier 321, a Discrete Fourier Transform (DFT) block 323, and an Inverse Fast Fourior Transform (IFFT) 325 block.

The modulation symbols 309 mapped to slot # 0 (313) are orthogonal sequence (orthogonal sequence or length OC) of length 5 in block-wise multiplier 321, [w (0), w (1), w (2), w (3), w (4)] multiplied block-wise, and then subjected to DFT 323 and IFFT 325 processing, respectively, to SC-FDMA symbols for UCI transmission in the slot, respectively. Mapped. Specifically, the modulation symbols d (0) to d (11) are multiply block-wise with each component of the OC to generate a total of five symbol sequences as follows.

d (0) w (0), d (1) w (0), d (2) w (0), d (3) w (0), d (4) w (0), d (5) w (0), d (6) w (0), d (7) w (0), d (8) w (0), d (9) w (0), d (10) w (0), d (11) w (0)],

d (0) w (1), d (1) w (1), d (2) w (1), d (3) w (1), d (4) w (1), d (5) w (1), d (6) w (1), d (7) w (1), d (8) w (1), d (9) w (1), d (10) w (1), d (11) w (1)],

d (0) w (2), d (1) w (2), d (2) w (2), d (3) w (2), d (4) w (2), d (5) w (2), d (6) w (2), d (7) w (2), d (8) w (2), d (9) w (2), d (10) w (2), d (11) w (2)],

d (0) w (3), d (1) w (3), d (2) w (3), d (3) w (3), d (4) w (3), d (5) w (3), d (6) w (3), d (7) w (3), d (8) w (3), d (9) w (3), d (10) w (3), d (11) w (3)],

d (0) w (0), d (1) w (4), d (2) w (4), d (3) w (4), d (4) w (4), d (5) w (4), d (6) w (4), d (7) w (4), d (8) w (4), d (9) w (4), d (10) w (4), d (11) w (4)]

Each generated symbol sequence is then DFT and IFFT processed and then mapped to SC-FDMA symbols 331, 333, 334, 335, 337 for UCI transmission in the slot, respectively. Also for the modulation symbols d (12) to d (23) 311 mapped to the second slot slot # 1 315, the block-wise multiplier 321 similarly to d (0) to d (11) (309). , DFT 323 and IFFT 325 processing are applied.

When the base station estimates the channel for UCI reception, the RS signal is mapped to the SC-FDMA symbols 332, 336, 339, and 343 for RS signal transmission through the RS signal processor 327. The RS signal processor 327 includes an IFFT 329 block and an RS signal generator 345, 347, 349, and 351. Accordingly, the base station generates an RS signal through the RS signal generators 345, 347, 349, and 351 using the CAZAC sequence. The generated RS signals are each IFFT 329 and then mapped to SC-FDMA symbols 332, 336, 339 and 343 for RS signal transmission.

Through the structure of FIG. 3, the base station may multiplex UCI from up to five different terminals in the same RB by allocating an orthogonal sequence having a length of 5 orthogonal to each other. Compared to the case where the total number of UCIs is 10, the number of UCI modulation symbols that can be transmitted in one subframe is increased to 24.

A physical uplink control channel (PUCCH) structure using the block spread DFT-S-OFDM transmission scheme is suitable for large capacity UCI transmission, and coexistence with the PUCCH structure for small capacity UCI transmission described in FIG. . PUCCH for small capacity UCI transmission is further classified into PUCCH for HARQ-ACK transmission and PUCCH for CSI transmission. For convenience of description, PUCCH for small capacity HARQ-ACK transmission is PUCCH format 1, PUCCH for small capacity CSI transmission, which is the first control information, PUCCH format 2, and PUCCH for large capacity UCI transmission, which is the second control information, is PUCCH format 3 Let's call each one.

In PUCCH format 1, an Orthogonal Cover (OC) is additionally applied to further increase the multiplexing capacity together with the CAZAC sequence-based transmission scheme. Accordingly, the resource of PUCCH format 1 is defined as an RB index, a cyclic shift (CS) value of a CAZAC sequence, and an OC index. In PUCCH format 2, a CAZAC sequence-based transmission scheme is applied, and resources are determined as CS values of an RB index and a CAZAC sequence. In the PUCCH format 3, since the block spread DFT-S-OFDM transmission scheme is applied, a transmission resource of the PUCCH format 3 is defined as an RB index and an OC index.

Resource allocation must be made so that transmission of each PUCCH format 1/2/3 does not collide with each other. In particular, the CAZAC sequence-based PUCCH formats 1 and 2 and the block spread DFT-S-OFDM transmission scheme PUCCH format 3 are different from each other and cannot be multiplexed in the same RB.

PUCCH format 1/2/3 is sequentially mapped to the outermost RB of the system transmission band so that a physical uplink shared channel (PUSCH), which is a physical channel for uplink data transmission, can be transmitted in the remaining bands where no PUCCH is transmitted. .

RB positions of a PUCCH format 1/2/3 and a method of allocating a specific PUCCH resource in accordance with a system efficiency are described below according to a specific embodiment in consideration of system efficiency. The present invention can be applied without limitation to the number of carriers constituting a broadband through carrier combination.

<First Embodiment>

In the first embodiment, the relative RB positions of PUCCH format 1/2/3 are mapped in order from the outermost part of the system transmission band to RB for PUCCH format 2, PUCCH format 3, and PUCCH format 1 in that order. A method in which resources for PUCCH format 3 are semi-statically configured and operated through higher signaling will be described with reference to FIG. 4.

4 is a diagram illustrating PUCCH resource mapping according to the first embodiment of the present invention.

Referring to FIG. 4, CSI transmission occurs according to a predetermined period for each terminal by base station configuration. Therefore, the base station can sufficiently predict the CSI generation time for each terminal. In addition, since the number of RBs required for CSI transmission does not change rapidly, the RB resources (N _RB ⁽²⁾ , 401) are previously occupied by explicit signaling for PUCCH format 2 by a predetermined amount in a cell. can do. Since the RBs 405 for N _RBs ⁽²⁾ PUCCH format 2 having relatively small changes are located at the outermost side of the system transmission band 403, PUCCH format 2 transmission for each terminal is possible at a fixed position. In the example of FIG. 4, an example in which the RB index 0 is mapped to the outermost side of the system transmission band is shown.

Large capacity UCI transmission resources are required only for terminals that support high performance functions such as carrier aggregation. In addition, since a large number of UEs rarely simultaneously transmit a large amount of UCI, a relatively small amount of resources in a cell may be semi-staticly occupied in advance. Therefore, the RB for PUCCH format 3 can share a part of the RBs for PUCCH format 2 which are preset N _RB ⁽²⁾ . In this case, N _RB ² may be the sum of RBs for PUCCH format 2 and RBs for PUCCH format 3.

The base station can inform the terminal how many RBs for PUCCH format 2 and RBs for PUCCH format 3 among the total RBs for N _RB ² without additional signaling. In the example of FIG. 4, as an RB for PUCCH format 3, the example which uses two RBs 407 inside a system transmission band among N _RB ⁽²⁾ RBs is shown. The RB for PUCCH format 2 is located at the outermost side of the system transmission band and uses the remaining N _RBs ⁽²⁾ -2 RBs except 2 RBs used for PUCCH format 3.

The base station informs the terminal in advance by using higher signaling (nPUCCH (2)) 415 as to which resource the PUCCH format 2 is transmitted to. As described above, the resource for PUCCH format 2 is determined as the CS value of the RB index and the CAZAC sequence. In addition, since a CAZAC sequence having a length of 12 is used for PUCCH format 2, twelve CS values are possible. Therefore, PUCCH format 2 can be multiplexed from 12 different terminals for each RB. In the example of FIG. 4, the total number of resources for PUCCH format 2 is (N _RB ⁽²⁾ -2) x 12, and if one of these is signaled to the terminal (n _PUCCH ⁽²⁾ ; 415), the terminal is as follows. Equation 1] and Equation 2 obtain RB indexes and CS values, which are resources for PUCCH format 2.

In Equations 1 and 2, floor (x) is a maximum integer not greater than x, and y mod z denotes the remainder of y divided by z. For example, when the base station informs a predetermined terminal of n _PUCCH ⁽²⁾ = 31 as higher signaling, the terminal knows that the RB index is 2 from floor (31/12) = 2, and the CS from 31 mod 12 = 7 Notice that the value is 7.

In addition, the base station informs the terminal in advance by using higher signaling (n _PUCCH ⁽³⁾ , 417) which resource is used to transmit PUCCH format 3 to a given terminal. As described above, resources for PUCCH format 3 are determined as RB indexes and OC indexes. In addition, since OC having a length of 5 is used for PUCCH format 3, five types of OC values are possible. Therefore, PUCCH format 3 can be multiplexed from five different terminals for each RB. In the example of FIG. 4, the total number of resources for PUCCH format 3 is 2 × 5 = 10, and if one of these is signaled to the UE (n _PUCCH ⁽³⁾ ) 417, the UE may be represented by Equation 3 as follows. According to Equation 4, an RB index and an OC index, which are resources for PUCCH format 3, are obtained.

In Equations 3 and 4, floor (x) is a maximum integer not greater than x, and y mod z denotes the remainder of y divided by z. For example, when the base station informs a predetermined terminal of n _PUCCH ⁽³⁾ = 19 as higher signaling, the terminal knows that the RB index is 3 from floor (19/5) = 3 and the OC from 19 mod 5 = 4 Notice that the index is 4.

In a situation in which RBs for PUCCH format 2 and RBs for PUCCH format 3 are shared among N _RB ⁽²⁾ RBs, PUCCH format 2 and PUCCH format 3 are different from each other and cannot be multiplexed in the same RB. Therefore, the RB for PUCCH format 2 and the RB for PUCCH format 3 additionally satisfy the following [Equation 5] and [Equation 6].

When the length of OC for PUCCH format 3 is generalized and expressed as one N _SF ^{PUCCH (3)} , [Equation 3], [Equation 4], and [Equation 5] are as follows [Equation 7], It is generalized to [Equation 8] and [Equation 9].

N _RB ⁽²⁾ of ^{_{RB (401) N RB (2}} ) th RB (409) which is located immediately after the transmission band may be multiplexed with the PUCCH format 2 and PUCCH format 1 set by the base station. Unlike PUCCH format 3, since PUCCH format 2 and PUCCH format 1 use the same transmission scheme based on CAZAC sequence, there is no problem in multiplexing on the same RB.

PUCCH format 1 is transmitted from the transmission band 411 immediately after the N _RB ⁽²⁾ th RB 409. In the case of HARQ-ACK transmitted in PUCCH format 1, transmission is determined according to whether downlink data is scheduled by the base station. Therefore, if the RB for PUCCH format 1 is semi-staticly allocated in advance, it is unable to keep up with the dynamic change in resource amount of PUCCH foramt 1, thereby reducing the efficiency of resource usage. That is, excessive resource occupy by occupying the RB for PUCCH format 1, or on the contrary, PUCCH format 1 transmission may be impossible by occupying too much resource. Accordingly, resources for PUCCH format 1 are not semi-statically allocated, but use resources mapped implicitly with a physical downlink control channel (PDCCH), which is a downlink physical control channel for scheduling downlink data. As described above, the PUCCH format 1 resource is defined as an RB index, a CS value of a CAZAC sequence, and an OC index, and can accommodate a maximum of 36 resources in one RB. Since the resources of the PUCCH format 1 dynamically change, the RB 413 that is not used for the PUCCH format 1 may be used for transmitting a Physical Uplink Shared Channel (PUSCH), which is a physical channel for uplink data transmission. Therefore, the efficiency of uplink resource utilization can be increased.

5 shows a procedure of allocating a resource for PUCCH transmission to a terminal by a base station according to the first embodiment of the present invention.

Referring to FIG. 5, in step 501, the base station sets the number of _RBs N _RB ² for PUCCH format 2 and PUCCH format 3 in consideration of the number of terminals in a current cell, the number of terminals supporting carrier combining, and the like. In addition, the base station informs the UEs of the configured RB number N _RB ⁽²⁾ for the PUCCH format 2 and the PUCCH format 3 in common by higher signaling. The base station allocates a resource n _PUCCH ⁽²⁾ for PUCCH format 2 and a resource n _PUCCH ⁽³⁾ for PUCCH format 3 to each UE in N _RB ⁽²⁾ configured in step 503. The base station informs the resources for the PUCCH format 2 and the resources for the PUCCH format 3 allocated to each UE through dedicated higher signaling. If downlink data to be transmitted to a predetermined terminal is generated, the base station transmits the PDCCH and PDSCH to the terminal in step 505. Then, the UE acquires resources for PUCCH format 1 implicitly mapped from the received PDCCH.

6 illustrates a procedure of acquiring a resource for PUCCH transmission from a base station by a terminal according to the first embodiment of the present invention.

Referring to FIG. 6, the UE acquires the number of _RBs N _RB ⁽²⁾ for PUCCH format 2 and PUCCH format 3 from higher signaling common to the cell received from the base station in step 601. And the UE acquires the dedicated upper one N _RB obtained via signaling ⁽²⁾ resources for the PUCCH format 2 in the n _PUCCH ⁽²⁾ and resources for the PUCCH format 3 n _PUCCH ⁽³⁾ received from the base station in step 603. If the UE is scheduled downlink data from the base station, in step 605, the UE acquires resources for PUCCH format 1 implicitly mapped from the PDCCH received from the base station.

The first embodiment can be variously modified. As an example, the mapping positions of the RBs for PUCCH format 2 and the RBs for PUCCH format 3 may be freely positioned within N _RB ⁽²⁾ RBs. For example, the RB for PUCCH format 3 may be located at the outermost part of the system transmission band than the RB for PUCCH format 2.

Second Embodiment

In the second embodiment, the RB positions of PUCCH formats 1/2/3 are mapped to the PUCCH format 2, the PUCCH format 3, and the PUCCH format 1 in order from the outermost of the system transmission band in order. A method of implicitly setting and operating without additional signaling will be described with reference to FIG. 7.

Since the relative RB positions of the PUCCH formats 1/2/3 of the second embodiment are the same as those of the first embodiment, duplicate descriptions are omitted as much as possible. 7 is a diagram illustrating PUCCH resource mapping according to a second embodiment of the present invention.

Referring to FIG. 7, as in the case of the first embodiment, in FIG. 7, N _RB ² 701 denotes the number of RBs shared by the PUCCH format 2 705 and the PUCCH format 3 707. The base station informs a predetermined terminal of the resource n _PUCCH ⁽²⁾ 715 for PUCCH format 2 by signaling. In particular, the base station signals a resource 715 for PUCCH format 2 to the terminal that must inform the resource for PUCCH format 3 together, such as a terminal supporting carrier combining, within reference numeral 717. That is, since 10 (= 2xN _SF ^{PUCCH (3)} ) resources corresponding to the innermost two RBs 707 of the N _RB ⁽²⁾ (701) RBs are to be used as resources for the PUCCH format 3, the PUCCH format 3 The PUCCH format 2 resource implicitly connected to the resource resource is limited to using the outermost 10 resources 717 in the N _RB ⁽²⁾ 701.

The resource for PUCCH format 3 is implicitly calculated by the UE from the resource for PUCCH format 2 by Equation 10 below.

For example, when N _SF ^{PUCCH (3), which} is the length of OC ^, is 5, and the BS signals N _RB ⁽²⁾ = 5 and n _PUCCH ⁽²⁾ = 9 to the UE, n _PUCCH ⁽³⁾ = 5 x 5-9-1 = 15. Therefore, when [Equation 1], [Equation 2] and [Equation 7], [Equation 8] are applied to each other, the RB index for PUCCH format 2 = floor (9/12) = 0, CS value for PUCCH format 2 = 9 mod 12 = 9, RB index for PUCCH format 3 = floor (15/5) = 3, OC index for PUCCH format 3 as shown by reference numeral 721 = 15 mod 5 = 0 This can be In the case of the second embodiment, since the PUCCH format 2 and the PUCCH format 3 cannot be multiplexed on the same RB, the conditions of Equations 6 and 9 must be satisfied.

8 illustrates a procedure in which a base station allocates a resource for PUCCH transmission to a terminal according to a second embodiment of the present invention.

Referring to FIG. 8, in step 801, the base station sets the number of _RBs N _RB ² for PUCCH format 2 and PUCCH format 3 in consideration of the number of terminals in a current cell, the number of terminals supporting carrier combining, and the like. The base station informs the configured N _RB ² to the higher signaling in common to all terminals in the cell. And the base station allocates the resources n _PUCCH ⁽²⁾ for the PUCCH format 2 for each terminal in step 803 and, PUCCH format 3 resource n _PUCCH ⁽³⁾ is for connection with a one-to-one resource for PUCCH format 2. The base station informs each terminal of the allocated resource for PUCCH format 2 by dedicated higher signaling. If downlink data to be transmitted to a predetermined terminal is generated, the base station transmits the PDCCH and PDSCH to the terminal in step 805. Then, the UE acquires resources for PUCCH format 1 implicitly mapped from the received PDCCH.

9 illustrates a procedure of acquiring a resource for PUCCH transmission from a base station by a terminal according to the second embodiment of the present invention.

Referring to FIG. 9, the UE acquires the number of _RBs N _RB ⁽²⁾ for PUCCH format 2 and PUCCH format 3 from the higher layer signaling common to the cells received from the base station in step 901. In addition, the UE acquires the resource n _PUCCH ⁽²⁾ for PUCCH format 2 in the N _RB ⁽²⁾ , which is the RB region obtained in step 903. The terminal determines the resource n _PUCCH ⁽³⁾ for PUCCH format 3 from the resource for PUCCH format 2. That is, the terminal uses a resource for PUCCH format 2 and a previously promised one-to-one connected resource as a resource for PUCCH format 3. If downlink data is scheduled from the base station, the terminal acquires resources for PUCCH format 1 implicitly mapped from the PDCCH received from the base station in step 905.

The second embodiment can be variously modified. As an example, the mapping positions of the RBs for PUCCH format 2 and RBs for PUCCH format 3 may be freely positioned within N _RB ⁽²⁾ _RBs while maintaining the one-to-one mapping relationship. For example, the RB for PUCCH format 3 may be located at the outermost part of the system transmission band than the RB for PUCCH format 2.

Third Embodiment

A third embodiment of the present invention will be described with reference to FIG. 10 for a transmission structure and a resource allocation method of a PUCCH format 3 when the SRS (Sounding Reference Signal) and the UE transmission time of the PUCCH format 3 overlap the same subframe.

10 is a diagram showing a PUCCH transmission structure of a block spread DFT-S-OFDM scheme according to a third embodiment of the present invention.

Referring to FIG. 10, the SRS is a signal indicating uplink channel state information and supports an uplink scheduling operation of a base station. The transmission position of the SRS corresponds to the last SC-FDMA symbol in the subframe, and the transmission period is set in advance. If the SRS transmission time point and the transmission time point of PUCCH format 3 overlap with the same subframe, the corresponding subframe has a structure as shown in FIG. The difference from the structure shown in FIG. 3 is that the SRS is transmitted in the last SC-FDMA symbol 1044 in the subframe, and slot # 1 is multiplied block-wise 1021 with an OC having a UCI modulation symbol of length 4, Through DFT 1023 and IFFT 1025 processing, respectively, they are mapped to four SC-FDMA symbols 1038, 1040, 1041, and 1042 for UCI transmission in a slot, respectively. Therefore, the number of UCIs from different UEs that can be multiplexed in one subframe is 5 in FIG. 3, but is reduced to 4 in this case. Accordingly, the resource allocation method of PUCCH format 3 is also changed.

First, in the case of the first embodiment [Equation 3], [Equation 4], [Equation 5], which is the resource allocation equation of PUCCH format 3, as shown in [Equation 11], [Equation 12], [math] Equation 13] respectively.

That is, N _SF ^{PUCCH (3)} = 4 in a subframe where transmission times of SRS and PUCCH format 3 overlap. In the second embodiment, when N _SF ^{PUCCH (3)} = 4 is applied to [Equation 10] which is a resource allocation equation of PUCCH format 3, n _PUCCH ⁽³⁾ = N _RB ⁽²⁾ x 4-n _PUCCH ^{( 2)} -1

Fourth Embodiment

The first and second embodiments are PUCCH format 2 and PUCCH format 3 is a shared resource for PUCCH format 3 in a previously set number ^(N _RB ⁽²⁾⁾ of the RB, and N _RB ⁽²⁾ to n _PUCCH ^{( 3)} is determined. However, the fourth embodiment separately informs an RB dedicated to PUCCH format 3, and specific resources for PUCCH format 3 are implicitly determined from PDCCH for scheduling downlink data without additional signaling.

11 is a diagram illustrating PUCCH resource mapping according to the fourth embodiment of the present invention.

Referring to FIG. 11, in the fourth embodiment, a transmission bandwidth 1103 is an RB region in which resources for N _RB ⁽²⁾ 1105 and PUCCH format 3 are mapped, which are RB regions to which resources for PUCCH format 2 are mapped. Phosphorus N _RB ⁽³⁾ (1107). In addition, the transmission band 1103 includes an RB region 1109 through which resources for PUCCH format 1 and PUCCH format 2 can be jointly mapped, an RB region 1111 to which resources for PUCCH format 1 are mapped, and resources for PUSCH transmission are mapped. Divided into RB regions 1113.

When the RB region for mapping each resource is set, the base station sets so that the N _RB ⁽²⁾ 1105 and the N _RB ⁽³⁾ 1107 do not overlap each other in the frequency region. The base station informs the terminal of the configured N _RB ² and N _RB ³ through higher signaling 1115 and 1117. RB positions between PUCCH formats 1/2/3 are mapped in order of PUCCH format 2, PUCCH format 3, and PUCCH format 1 from the outermost part of the system transmission band.

Control Channel Element (CCE) is a basic unit constituting the PDCCH and is a set of a predetermined number of REs. If the index of the first CCE among the CCEs constituting the PDCCH is n _CCE , in the fourth embodiment, resources for PUCCH format 3 (n _PUCCH ⁽³⁾ ), RB index for PUCCH format 3, and OC index for PUCCH format 3 are as follows. (14), [15], and [16].

For example, assuming N _RB ⁽³⁾ = 2, N _SF ^{PUCCH (3)} = 5, n _CCE = 5, N _RB ⁽²⁾ = 3, n _PUCCH ⁽³⁾ = 5 mod (2 x 5) = 5 Therefore, the RB index for PUCCH format 3 = floor (5/5) + 2 = 3, and the OC index for PUCCH format 3 = 5 mod 5 = 0.

12 illustrates a procedure of allocating resources for PUCCH transmission to a terminal by a base station according to the fourth embodiment of the present invention.

Referring to FIG. 12, in step 1201, the base station sets the number of _RBs ⁽ N _RB ⁽²⁾ ) for PUCCH format 2 in consideration of the number of terminals in the current cell. The base station sets the number of _RBs ⁽ N _RB ⁽³⁾ ) for PUCCH format 3 in consideration of the number of terminals supporting carrier combining. The base station informs the upper signaling in common to N _RB ⁽²⁾ and N _RB ⁽³⁾ to all terminals in the cell. In step 1203, the base station allocates the resource n _PUCCH ⁽²⁾ for PUCCH format 2 to each UE from among the resources (N _RB ⁽²⁾ ) for PUCCH format 2. The base station informs the resource n _PUCCH ⁽²⁾ for PUCCH format 2 allocated to each UE by dedicated higher signaling. If downlink data to be transmitted to a predetermined terminal is generated, the base station transmits the PDCCH and PDSCH to the terminal in step 1205. Then, the UE knows the PUCCH format 1 resource or the PUCCH format 3 resource implicitly mapped from the received PDCCH.

FIG. 13 illustrates a procedure of acquiring a resource for PUCCH transmission from a base station by a terminal according to the fourth embodiment of the present invention.

Referring to FIG. 13, the UE acquires the number of RBs for PUCCH format 2 (N _RB ⁽²⁾ ) and the number of RBs for PUCCH format 3 (N _RB ⁽³⁾ ) from the upper layer common signaling received from the base station in step 1301. do. And a terminal obtains a resource n _PUCCH ⁽²⁾ for the PUCCH format 2 only from upper signaling received from the base station in step 1303. If the base station schedules downlink data, the terminal receives the PDCCH and PDSCH in step 1305.

The UE determines whether the number of HARQ-ACK bits to be transmitted to the base station from the PDCCH received in step 1307 is greater than a predetermined N bits. If the number of HARQ-ACK bits to be transmitted to the base station is smaller than the predetermined N bits, the terminal acquires resources for PUCCH format 1 implicitly mapped to the PDCCH received from the base station in step 1309. On the other hand, if the number of HARQ-ACK bits to be transmitted to the base station is greater than a predetermined N bits, the UE acquires resources for PUCCH format 3 implicitly mapped from the PDCCH received from the base station in step 1311.

The fourth embodiment can be variously modified. As an example, the relative mapping position of the RB for PUCCH format 2 and the RB for PUCCH format 3 may be set differently. For example, the RB for PUCCH format 3 may be located at the outermost part of the system transmission band than the RB for PUCCH format 2.

14 is a view showing a PUCCH transmission device of a terminal of the present invention.

Referring to FIG. 14, the terminal adds error correction capability by channel coding a UCI 1401 such as HARQ-ACK or CSI in a channel encoder block 1403. The terminal scrambles the channel coded UCI 1401 through a scrambler 1405 in order to protect it from the effects of inter-cell interference, and then modulates it in a modulator 1407 to generate a modulation symbol. The channel coding block 1403 may further include a rate matching operation or an interleaving operation.

The modulation symbol is a block-wise multiplication operation in an orthogonal sequence having a predetermined length in an OC multiplier 1409. The block-wise multiplication modulation symbol is subjected to DFT signal processing in the DFT block 1411 and then mapped to a transmission band for PUCCH format 3 among the system transmission bands through the RE mapper 1413. The output value of the RE mapper 1413 is IFFT processed at the IFFT block 1415 and then RF signaled at the RF block 1417 and then transmitted to the base station through the antenna 1418.

In this case, as described in the embodiments, the PUCCH controller 1421 obtains the resource for PUCCH format 3 through explicit signaling or implicit signaling so that the OC multiplier 1409 applies the obtained OC index, and RE. The mapper 1413 adjusts the transmission band of the PUCCH format 3 to control the transmission of the PUCCH format 3.

15 illustrates a PUCCH receiving apparatus of a base station of the present invention.

Referring to FIG. 15, the base station performs RF signal processing on a signal received from a terminal through an antenna 1501 in an RF block 1503. After the base station performs the FFT processing on the RF signal in the FFT block 1505, the base station extracts the PUCCH format 3 signal from the transmission band for the PUCCH format 3 in the RE demapper 1507. The PUCCH format 3 signal is IDFT processed in IDFT block 1509 and then block-wise multiplyed into an orthogonal sequence of predetermined length in OC multiplier 1511 and then demodulated in demodulator 1513. . The demodulated PUCCH format 3 signal is descrambled by a descrambler 1515 and then decoded by a channel decoder 1517. Through these processes, the base station finally acquires the UCI signal 1519.

As described in the embodiments, the PUCCH controller 1521 applies an OC index to reflect the OC multiplier 1511 to receive the PUCCH format 3 according to the resources for the PUCCH format 3 previously set by the base station to the UE. The RE demapper 1507 is controlled to extract the PUCCH from the transmission band of the PUCCH format 3. The PUCCD controller 1521 controls the reception of the PUCCH format 3 through the extracted PUCCH.

<Fifth Embodiment>

In the fifth embodiment, the number of RBs shared by PUCCH format 2 and PUCCH format 3 (N _RB ⁽²⁾ ) is set in advance, and the resource n _PUCCH ⁽³⁾ for PUCCH format 3 is determined within N _RB ⁽²⁾ . Another way.

16 illustrates PUCCH resource mapping according to a fifth embodiment of the present invention.

RB positions of PUCCH formats 1/2/3 of the fifth embodiment are the same as in the first or second embodiment, in order of PUCCH format 2, PUCCH format 3, and PUCCH format 1 from the outermost side of the system transmission band. Make sure they are mapped in order. In FIG. 16, an example in which the RB index 0 is mapped to the outermost side of the system transmission band is shown.

Referring to FIG. 16, N _RB ⁽²⁾ 1601 means the number of RBs shared by PUCCH format 2 1605 and PUCCH format 3 1607. The base station informs the user equipment of an additional 'Parameter_A' 1617 from which of the N _RBs ⁽²⁾ 1601 RBs to use as the RB for PUCCH format3 transmission. 'Parameter_A' is a value commonly applied to terminals in a cell and indicates a start index (or smallest index) of RB for PUCCH format 3. And 'Parameter_A' is notified to the terminals in the cell through higher signaling. As illustrated in FIG. 16, RB # 0 to RB # (N _RB ⁽²⁾ -3) 1605 are used as RBs for PUCCH format 2. And RB # (N _RB ⁽²⁾ -2) to RB # (N _RB ⁽²⁾ -1) (1607) is used as the RB for PUCCH format 3.

The base station informs each UE in advance of higher signaling (n _PUCCH ⁽²⁾ ; 1615) using which resource to transmit PUCCH format 2. As described above, the resource for PUCCH format 2 is determined as the CS value of the RB index and the CAZAC sequence. In addition, since the CAZAC sequence having a length of 12 is used for PUCCH format 2, twelve CS values are possible. Therefore, PUCCH format 2 may be multiplexed from 12 different terminals for each RB. In FIG. 16, the total number of resources for PUCCH format 2 is (N _RB ⁽²⁾ -2) x 12, and when the base station signals one of them to the terminal (n _PUCCH ⁽²⁾ ; 1615), the terminal is represented by Equation 1 ], [Equation 2] to obtain the RB index and the CS value which is a resource for PUCCH format 2.

The base station additionally signals 'Parameter_B' and 'Parameter_C' to the UE to inform a given UE which resource to use to transmit PUCCH format 3. As described above, resources for PUCCH format 3 are determined as RB indexes and OC indexes. In addition, since OC having a length of 5 is used for PUCCH format 3, five types of OC values are possible. Therefore, PUCCH format 3 may be multiplexed from five different terminals for each RB. In FIG. 16, since there are two RBs 1607 for PUCCH format 3, the total number of resources for PUCCH format 3 is 2 × 5 = 10. The base station groups the resources for PUCCH format 3 so that N terminals belonging to the same group share the resources for PUCCH format 3. That is, the base station enables the terminal to know in advance the candidate group for the resource for PUCCH format 3 to be used by the terminal through 'Parameter_B'. In FIG. 16, 'Parameter_B' 1619 indicates that four PUCCH format 3 resources are reported. In this case, four UEs share the resource for PUCCH format 3. 'Parameter_B' is notified to the terminal by higher signaling in advance, and is signaled by the same value to N terminals belonging to the same group. Here, 'Parameter_B' represents the first resource among the candidate groups for the four PUCCH format 3 resources.

'Parameter_C' 1620 informs which resource to use in detail among resource candidate groups for PUCCH format 3 notified to the terminal through 'Parameter_B'. In FIG. 16, it is shown that a specific UE uses PUCCH resource # 1 of RB # (N _RB ⁽²⁾ -1). 'Parameter_C' is defined as physical layer signaling, and the base station scheduler can operate by dynamically reflecting an environment in a cell. For example, an arbitrary field of the PDCCH may be changed and used for 'Parameter_C' usage. In detail, a power control field of a PDCCH for scheduling a secondary carrier or a redundancy version (RV) field indicating a HARQ retransmission format may be used for 'Parameter_C' use. 'Parameter_C' is signaled for each terminal and is also called an ACK (Ack / Nack Resource Indicator).

By applying such 'Parameter_A', 'Parameter_B', 'Parameter_C', signaling overhead is minimized and dynamic resource scheduling of PUCCH format 3 is possible. Herein, a method for calculating a specific PUCCH format 3 resource from 'Parameter_A', 'Parameter_B', and 'Parameter_C' signaled by the UE may be calculated by Equation 17, Equation 18, or Equation 19. .

n _PUCCH ⁽³⁾ is a value indicating a resource for PUCCH format 3 calculated by the UE from 'Parameter_A', 'Parameter_B', 'Parameter_C' and N. N represents how many UEs share resources for grouped PUCCH format 3 indicated by 'Parameter_B'. N is notified by the base station to the terminal through higher signaling in advance or operates at a fixed value.

From the n _PUCCH ³ calculated by Equation 17, the UE calculates which RB and OC are to be used to transmit PUCCH format 3 by Equation 18 and Equation 19.

In Equations 18 and 19, floor (x) is the maximum integer not greater than x, and y mod z means the remainder of y divided by z. For example, when the base station informs a predetermined terminal of Parameter_A = 2, Parameter_B = 2, Parameter_C = 3, and N = 4 by signaling, the UE has n _PUCCH ⁽³⁾ = 2 x 5 + 2 x 4 + 3 = 21 We know that RB index is 4 from floor (21/5) = 4, and we know that OC index is 1 from 21mod 5 = 1.

When _RBs for PUCCH format 2 and RBs for PUCCH format 3 are shared among N _RB ⁽²⁾ RBs, PUCCH format 2 and PUCCH format 3 are different transmission methods, and thus cannot be multiplexed in the same RB. However, it can be multiplexed with the PUCCH format 2 and PUCCH format 1 set by the base station N _RB ⁽²⁾ th RB (1609) located at N _RB ⁽²⁾ of RB (1601) immediately after the transmission band. Unlike PUCCH format 3, since PUCCH format 2 and PUCCH format 1 use the same transmission scheme based on CAZAC sequence, there is no problem in multiplexing on the same RB.

PUCCH format 1 is transmitted from the transmission band 1611 immediately after the N _RB ⁽²⁾ th RB 1609. In case of HARQ-ACK transmitted in PUCCH format 1, transmission is determined according to whether downlink data is scheduled by the base station. That is, resources for PUCCH format 1 are not semi-statically allocated, but use resources mapped implicitly with a physical downlink control channel (PDCCH), which is a downlink physical control channel for scheduling downlink data. As described above, the PUCCH format 1 resource is defined as an RB index, a CS value of a CAZAC sequence, and an OC index, and can accommodate a maximum of 36 resources in one RB. Since the resources of the PUCCH format 1 dynamically change, the RB 1613 that is not used for the PUCCH format 1 may be used for transmitting a Physical Uplink Shared Channel (PUSCH), which is a physical channel for uplink data transmission. Therefore, the efficiency of uplink resource utilization can be increased.

FIG. 17 illustrates a procedure in which a base station allocates a resource for PUCCH transmission to a terminal according to a fifth embodiment of the present invention.

Referring to Figure 17, the base station in step 1701 sets the current terminal number in the cell, the carrier binding a terminal number, such as PUCCH format 2 and PUCCH format 3 RB number N _RB ⁽²⁾ considering that support, and N _RB ^{( 2)} From which RBs are used as RBs (Parameter A) for PUCCH format 3 within the RBs. The base station informs N _RB ² and Parameter A of all terminals in the cell through higher signaling.

The base station allocates a resource n _PUCCH ⁽²⁾ for PUCCH format 2 to each terminal in N _RB ⁽²⁾ configured in step 1703 and assigns a resource group (Parameter_B) for PUCCH format 3 shared by N terminals to a maximum of N. Commonly allocated to the two terminals. Next, the base station informs n _PUCCH ² by dedicated higher signaling for each terminal, and informs N terminals of Parameter_B by dedicated higher signaling.

If downlink data to be transmitted to a predetermined terminal is generated, the base station transmits the PDCCH and PDSCH to the terminal in step 1705. Then, the UE acquires resources for PUCCH format 1 implicitly mapped from the received PDCCH, and the UE supporting PUCCH format 3 obtains Parameter_C from the received PDCCH.

18 illustrates a procedure of acquiring a resource for PUCCH transmission from a base station by a terminal according to the fifth embodiment of the present invention.

Referring to FIG. 18, the UE acquires the number of _RBs N _RB ⁽²⁾ for PUCCH format 2 and PUCCH format 3 from higher signaling common to the cells received from the base station in step 1801. In addition, the UE acquires Parameter_A indicating which RB to use as the RB for PUCCH format 3 within the NRB (2) RBs.

In addition, the UE acquires the resource nPUCCH 2 for PUCCH format 2 in the N _RB ² obtained through dedicated higher signaling received from the base station in step 1803 and indicates the number of groups among the resources for PUCCH foramt 3. Acquire it.

If the UE is scheduled downlink data from the base station, in step 1805, the UE acquires resources for PUCCH format 1 implicitly mapped from the PDCCH received from the base station. Or, the UE acquires Parameter_C for dynamically signaling a resource for PUCCH format 3 from a specific field of the PDCCH.

The fifth embodiment can be variously modified. For example, the mapping positions of the RBs for PUCCH format 2 and RBs for PUCCH format 3 can be freely located within N _RB ⁽²⁾ RBs. The RB for PUCCH format 3 may be located at the outermost part of the system transmission band than the RB for PUCCH format 2. In addition, the terminal device and the base station device of the fifth embodiment may be implemented as described with reference to FIGS. 14 and 15, respectively.

As another variation of the fifth embodiment, nPUCCH (3) may be calculated through Equation 20 by defining one signaling parameter Parameter_D without separately signaling Parameter_A and Parameter_B of Equation 17.

n _PUCCH ⁽³⁾ is a value indicating a resource for PUCCH format 3 calculated by the UE from 'Parameter_C' and 'Parameter_D'. Parameter_D is a resource for PUCCH format 3 shared by N terminals and is notified to up to N terminals through higher signaling. For example, 'Parameter_D' may indicate the first resource among the candidate groups for the N PUCCH format 3 resources, or may indicate each of the N PUCCH format 3 resources. If 'Parameter_D' represents the first resource among the candidate groups for the N PUCCH format 3 resources, 'Parameter_C' applies an additional offset from the value signaled as 'Parameter_D' to determine how many resources the UE will specifically use. Inform. Alternatively, when 'Parameter_B' indicates each of the N PUCCH format 3 resources, 'Parameter_C' informs the UE of which resource to specifically use among the resources signaled by Parameter_D. In this way, the UE can calculate n _PUCCH ⁽³⁾ .

For example, when 'Parameter_D' = {10, 12, 15, 20} and 'Parameter_C' = 0 are signaled, 'Parameter_C' indicates 10, the zeroth value of 'Parameter_D', and n _PUCCH ⁽³⁾ = 10 Is calculated. Accordingly, the base station appropriately selects Parameter_D so that the RB for the PUCCH format 2 is located outside the system transmission band rather than the RB for the PUCCH format 3. In addition, the base station prevents PUCCH format 3 and PUCCH format 2 from being multiplexed on the same RB.

From the nPUCCH 3 calculated through Equation 20, the UE calculates which RB and OC are used to transmit PUCCH format 3 by using Equations 18 and 19, respectively.

Sixth Embodiment

The sixth embodiment presets the number of RBs for PUCCH format ² (N _RB ⁽²⁾ ) and the number of RBs for PUCCH format 3 (N _RB ⁽³⁾ ), respectively, and the resources for PUCCH format 3 in N _RB ⁽³⁾ . n is another method of determining the _PUCCH ⁽³⁾ . 19 is a diagram illustrating PUCCH resource mapping according to the sixth embodiment of the present invention.

Referring to FIG. 19, in a sixth embodiment, a transmission bandwidth 1903 is an RB region in which resources for N _RB ⁽²⁾ 1905 and PUCCH format 3 are mapped, which are RB regions to which resources for PUCCH format 2 are mapped. Phosphorus N _RB ⁽³⁾ (1907). In addition, the transmission band 1903 includes an RB region 1909 in which resources for PUCCH format 1 and PUCCH format 2 can be jointly mapped, an RB region 1911 in which resources for PUCCH format 1 are mapped, and resources for PUSCH transmission are mapped. Divided into RB regions 1913.

When the RB area for mapping each resource is set, the base station sets the NRB 2 1905 and the NRB 3 1907 so as not to overlap each other in the frequency domain. The base station informs the terminal of the configured N _RB ² and N _RB ³ through higher signaling 1905 and 1907. RB positions between PUCCH formats 1/2/3 are mapped in order of PUCCH format 2, PUCCH format 3, and PUCCH format 1 from the outermost part of the system transmission band. 19 shows an example in which the RB index 0 is mapped to the outermost side of the system transmission band. Here, in the sixth embodiment, the resource determination method for the PUCCH format 2 and the PUCCH format 1 has been described in the fifth embodiment, and thus a detailed description thereof will be omitted.

In order to inform a given UE which resource to use to transmit PUCCH format 3, the base station additionally provides 'Parameter_B' and 'Parameter_C' in addition to N _RB ⁽³⁾ 1907, which is an RB region to which resources for PUCCH format 3 are mapped. Signal to the terminal. As described above, resources for PUCCH format 3 are determined as RB indexes and OC indexes. In addition, since OC having a length of 5 is used for PUCCH format 3, five types of OC values are possible. Therefore, PUCCH format 3 can be multiplexed from five different terminals for each RB. As shown in FIG. 19, if N _RB ⁽³⁾ = 2, the total number of resources for PUCCH format 3 is 2 x 5 = 10.

The base station groups the resources for PUCCH format 3 so that N terminals belonging to the same group share the resources for PUCCH format 3. The base station enables the terminal to know in advance the candidate group for the resource for PUCCH format 3 to be used by the terminal through 'Parameter_B'. In FIG. 19, 'Parameter_B' (1919) indicates that four PUCCH format 3 resources are informed. In this case, four terminals share a resource for PUCCH format 3. 'Parameter_B' is notified to the terminal by higher signaling in advance, and is signaled to the N terminals belonging to the same group to the same value. For example, 'Parameter_B' may indicate the first resource among the candidate groups for the four PUCCH format 3 resources.

'Parameter_C' 1920 informs which resource to use in detail among resource candidate groups for PUCCH format 3 notified to the terminal by 'Parameter_B'. In FIG. 19, it is shown that a specific UE uses PUCCH resource # 1 of RB # (N _RB ⁽²⁾ +1). 'Parameter_C' is defined as physical layer signaling so that the base station scheduler can dynamically operate by reflecting the environment in the cell. Therefore, any field of the PDCCH may be changed and used for 'Parameter_C' usage. In detail, a power control field of a PDCCH for scheduling a secondary carrier or a redundancy version (RV) field indicating a HARQ retransmission format may be used for 'Parameter_C' use. 'Parameter_C' is signaled for each terminal and is also called an ACK (Ack / Nack Resource Indicator).

Such ^{_{N RB (2), N RB}} (3), 'Parameter_B', applies 'Parameter_C' being, while minimizing the signaling overhead is to enable the resource scheduling of the dynamic PUCCH format 3. The method for calculating a specific PUCCH format 3 resource from the N _RB ⁽²⁾ , N _RB ⁽³⁾ , 'Parameter_B', 'Parameter_C' signaled by the UE is [Equation 21], [Equation 22], [Equation 22] 23].

n _PUCCH ⁽³⁾ is a value indicating a resource for PUCCH format 3 calculated by the UE from N _RB ² , 'Parameter_B', 'Parameter_C' and N. N represents the number of terminals sharing resources for grouped PUCCH format 3 indicated by 'Parameter_B'. N is notified by the base station to the terminal through higher signaling in advance, or is operated at a fixed value.

The UE calculates from R _PUCCH ³ calculated by Equation 21 through Equation 22 and Equation 23 using which RB and OC to transmit PUCCH format 3.

In Equations 22 and 23, floor (x) is a maximum integer not greater than x, and y mod z denotes a remainder of y divided by z. For example, when the base station informs a predetermined terminal of N _RB ⁽²⁾ = 3, N _RB ⁽³⁾ = 2, Parameter_B = 2, Parameter_C = 3, and N = 4 as signaling, the terminal is n _PUCCH ^(3). = 2 x 5 + 2 x 4 + 3 = 21, we know that the RB index is 4 from floor (21/5) = 4 and we know that the OC index is 1 from 21 mod 5 = 1.

In the 'N _RB ⁽²⁾ + N _RB ⁽³⁾ ' th RB (1909) located in the next transmission band immediately after the N _RB ⁽³⁾ RBs (1907), the PUCCH format 2 and the PUCCH format 1 are multiplexed together by the base station configuration. Can be. Unlike PUCCH format 3, since PUCCH format 2 and PUCCH format 1 use the same transmission scheme based on CAZAC sequence, there is no problem in multiplexing on the same RB.

PUCCH format 1 is transmitted from the transmission band 1911 immediately after the 'N _RB ⁽²⁾ + N _RB ⁽³⁾ ' th RB 1609. In the case of HARQ-ACK transmitted in PUCCH format 1, transmission is determined according to whether downlink data is scheduled by the base station. That is, resources for PUCCH format 1 are not semi-statically allocated, but use resources mapped implicitly with a physical downlink control channel (PDCCH), which is a downlink physical control channel for scheduling downlink data. As described above, the PUCCH format 1 resource is defined as an RB index, a CS value of a CAZAC sequence, and an OC index, and can accommodate a maximum of 36 resources in one RB. Since the resources of the PUCCH format 1 dynamically change, the RB 1913 that is not used for the PUCCH format 1 may be used for transmitting a Physical Uplink Shared Channel (PUSCH), which is a physical channel for uplink data transmission. Therefore, the efficiency of uplink resource utilization can be increased.

20 illustrates a procedure of allocating resources for PUCCH transmission to a terminal by a base station according to the sixth embodiment of the present invention.

Referring to FIG. 20, in step 2001, the base station considers the number of terminals in a current cell, the number of terminals supporting carrier combining, and the like. The number of _RBs for PUCCH format 2 N _RB ⁽²⁾ and the number of _RBs for PUCCH format 3 N _RB ^{(3 )} . And the base station informs the N _RB ⁽²⁾ set in common to all the terminals in the cell by the upper signaling.

Next, the base station allocates the resource n _PUCCH ⁽²⁾ for PUCCH format 2 for each UE in the N _RB ⁽²⁾ configured in step 2003. The base station commonly allocates a resource group (Parameter_B) for PUCCH format 3 shared by N terminals within N _RB ³ to N terminals. The base station informs n _PUCCH ⁽²⁾ by dedicated higher signaling for each terminal, and informs N terminals of Parameter_B by dedicated higher signaling.

If downlink data to be transmitted to a predetermined terminal is generated, the base station transmits the PDCCH and PDSCH to the terminal in step 2005. Then, the UE obtains the implicitly mapped resources for PUCCH format 1 from the received PDCCH, and the UE supporting PUCCH format 3 obtains Parameter_C from the received PDCCH.

21 illustrates a procedure of acquiring resources for PUCCH transmission from a base station by a terminal according to the sixth embodiment of the present invention.

Referring to FIG. 21, the UE acquires RB number N _RB ⁽²⁾ for PUCCH format 2 and RB number N _RB ⁽³⁾ for PUCCH format 3 from the higher ^layer signaling common to the cell received from the base station in step 2101. In addition, the UE acquires Parameter_B indicating the number of groups of resources for PUCCH format 2 n _PUCCH ⁽²⁾ and PUCCH foramt 3 in N _RB ⁽²⁾ obtained through dedicated higher signaling received from the base station in step 2103. do.

If downlink data is scheduled from the base station, the UE acquires the resource for PUCCH format 1 implicitly mapped from the PDCCH received from the base station in step 2105 or Parameter_C for dynamically signaling the resource for PUCCH format 3 from a specific field of the PDCCH. Acquire it.

The sixth embodiment can be variously modified. For example, the mapping positions of the RBs for PUCCH format 2 and RBs for PUCCH format 3 can be freely located within N _RB ⁽²⁾ RBs. That is, the RB for PUCCH format 3 may be located at the outermost part of the system transmission band than the RB for PUCCH format 2. In addition, the terminal device and the base station device of the sixth embodiment may be implemented as described with reference to FIGS. 14 and 15, respectively.

Seventh Embodiment

In the seventh embodiment, the number of RBs shared by PUCCH format 2 and PUCCH format 3 (N _RB ⁽²⁾ ) is set in advance, and the resource n _PUCCH ⁽³⁾ for PUCCH format 3 is determined within N _RB ⁽²⁾ . Another way.

22 is a diagram illustrating PUCCH resource mapping according to the seventh embodiment of the present invention.

In the seventh embodiment, the relative RB positions of the PUCCH formats 1/2/3 are the same as those of the first embodiment or the second embodiment, from the outermost part of the system transmission band to the PUCCH format 2, PUCCH format 3, and PUCCH format 1; Mapped in order. 22 shows an example in which the RB index 0 is mapped to the outermost side of the system transmission band.

Referring to Figure ^{_{22, N RB (2) (}} 2201) is the number of RB sharing a PUCCH format 2 (2205) and PUCCH format 3 (2207). The base station signals the terminal so that the N _RB ² is commonly applied to the terminals in the cell. The base station maps transmission resources for PUCCH format 2 for each UE in ascending order from RB index 0, which is the outermost of the system transmission band, among N _RB ⁽²⁾ 2201 RBs. And the base station maps the transmission resources for PUCCH format 3 for each terminal in descending order from the RB index N _RB ⁽²⁾ -1 corresponding to the innermost RB of the N _RB ⁽²⁾ (2201) RBs. Therefore, positions where the transmission resources for PUCCH format 2 and the transmission resources for PUCCH format 3 which share N _RB ⁽²⁾ (2201) RBs do not overlap each other as much as possible, and resource efficiency can be maximized.

In FIG. 22, RB # 0 to RB # (N _RB ⁽²⁾ -3) 2205 are used as RBs for PUCCH format 2. In addition, RB # (N _RB ⁽²⁾ -1) to RB # (N _RB ⁽²⁾ -2) (2207) are used as RBs for PUCCH format 3.

The base station informs each UE in advance of higher signaling (n _PUCCH ⁽²⁾ ; 2215) using which resource to transmit PUCCH format 2. As described above, the PUCCH format 2 resource is determined using the RB index and the CS value of the CAZAC sequence. Since a CAZAC sequence having a length of 12 is used as a resource for PUCCH format 2, twelve CS values are possible. Therefore, PUCCH format 2 may be multiplexed from 12 different terminals for each RB. In FIG. 22, the total number of resources for PUCCH format 2 is (N _RB ⁽²⁾ -2) x 12, and the base station signals one of them to the UE (n _PUCCH ⁽²⁾ ; 2215). Then, the UE obtains the RB index and the CS value, which are resources for PUCCH format 2, by using Equations 1 and 2.

The base station additionally signals 'Parameter_B' and 'Parameter_C' to the UE to inform a given UE which resource to use to transmit PUCCH format 3. As described above, the resource for PUCCH format 3 is determined as an RB index and an OC index. In addition, since OC having a length of 5 is used as a resource for PUCCH format 3, five types of OC values are possible. Therefore, PUCCH format 3 may be multiplexed from five different terminals for each RB.

In FIG. 22, since there are two RBs 2207 for PUCCH format 3, the total number of resources for PUCCH format 3 is 2 × 5 = 10. The base station groups the resources for PUCCH format 3 so that N terminals belonging to the same group share the resources for PUCCH format 3. That is, the base station enables the terminal to know in advance the candidate group for the resource for PUCCH format 3 to be used by the terminal through 'Parameter_B'.

In FIG. 22, 'Parameter_B'2219 indicates that four PUCCH format 3 resources are reported. In this case, four UEs share the resource for PUCCH format 3. 'Parameter_B' is notified to the terminal by higher signaling in advance, and is signaled by the same value to N terminals belonging to the same group.

For example, 'Parameter_B' may represent the first resource among the candidate groups for the four PUCCH format 3 resources, or may indicate each of the four PUCCH format 3 resources. The UE informs which resource to use in detail among resource candidate groups for PUCCH format 3 notified to the UE through Parameter_B '. In FIG. 22, it is shown that a specific UE uses PUCCH resource # 1 of RB # (N _RB ⁽²⁾ -1). 'Parameter_C' is defined as physical layer signaling, and the base station scheduler can operate by dynamically reflecting an environment in a cell. For example, any field of the PDCCH may be used for 'Parameter_C' use. Specifically, the base station scheduler may use the power control field of the PDCCH for scheduling the secondary carrier or the redundancy version (RV) field indicating the HARQ retransmission format for 'Parameter_C' use. 'Parameter_C' is signaled for each terminal and is also called an ACK (Ack / Nack Resource Indicator).

By applying 'Parameter_B' and 'Parameter_C' as described above, signaling overhead is minimized and dynamic resource scheduling of PUCCH format 3 is possible. Herein, a method for calculating a specific PUCCH format 3 resource using 'Parameter_B' and 'Parameter_C' signaled by the UE may be calculated by Equation 24, Equation 25, and Equation 26.

n _PUCCH ⁽³⁾ is a value indicating a resource for PUCCH format 3 calculated by the UE from 'Parameter_B' and 'Parameter_C'. In this case, 'Parameter_B' represents the first resource among the candidate groups for the four PUCCH format 3 resources. Further, 'Parameter_C' indicates an additional number of resources to be used by the UE in detail by applying an additional offset from the value signaled as 'Parameter_B'. For example, when 'Parameter_B' is signaled as 10 representing the first resource among {10, 11, 12, 13}, and when 'Parameter_C' = 2, n _PUCCH ^{(3) which is a} resource for PUCCH format 3 to be used by the UE Becomes 10 + 2 = 12.

If 'Parameter_B' indicates each of the four PUCCH format 3 resources, 'Parameter_C' informs the UE of which resource to specifically use among the resources signaled by Parameter_B. Accordingly, the UE can calculate n _PUCCH ⁽³⁾ . For example, when 'Parameter_B' = {10, 12, 15, 20} and 'Parameter_C' = 0 are signaled, the UE checks 10, which is the 0th value of 'Parameter_B', through the value signaled through 'Parameter_C'. . And the terminal calculates n _PUCCH ⁽³⁾ to 10.

From the calculated n _PUCCH ⁽³⁾ , the UE calculates which RB and OC are to be used to transmit PUCCH format 3 by [Equation 25] and [Equation 26].

If n _PUCCH ⁽³⁾ = 0 according to Equation 25, RB index for PUCCH format 3 = N _RB ⁽²⁾ -1, and is mapped to the innermost RB among N _RB ⁽²⁾ RBs. And as n _PUCCH ⁽³⁾ increases, the RB index to which resources for PUCCH format 3 are mapped gradually decreases.

In Equations 25 and 26, floor (x) is a maximum integer not greater than x, and y mod z means the remainder of y divided by z. For example, when the base station informs a predetermined terminal of N _RB ⁽²⁾ = 6, Parameter_B = 5, and Parameter_C = 3 by signaling, the terminal acquires n _PUCCH ⁽³⁾ = 5 + 3 = 8. The UE knows that the RB index is 4 from 6-1-floor (8/5) = 4 and the OC index is 3 from 8 mod 5 = 3.

When _RBs for PUCCH format 2 and RBs for PUCCH format 3 are shared among N _RB ⁽²⁾ RBs, PUCCH format 2 and PUCCH format 3 are different transmission methods, and thus cannot be multiplexed in the same RB. However, PUCCH format 2 and PUCCH format 1 may be multiplexed together in the N _RB ⁽²⁾ th RB 2209 located in a transmission band immediately after the N _RB ⁽²⁾ RBs 2201. In addition, unlike PUCCH format 3, since PUCCH format 2 and PUCCH format 1 use the same transmission scheme based on the CAZAC sequence, there is no problem in multiplexing on the same RB.

PUCCH format 1 is transmitted from the transmission band 2211 immediately after the N _RB ⁽²⁾ th RB 2209. In case of HARQ-ACK transmitted in PUCCH format 1, transmission is determined according to whether downlink data is scheduled by the base station. That is, resources for PUCCH format 1 are not semi-statically allocated, but use resources mapped implicitly with a physical downlink control channel (PDCCH), which is a downlink physical control channel for scheduling downlink data. As described above, the PUCCH format 1 resource is defined as an RB index, a CS value of a CAZAC sequence, and an OC index, and a maximum of 36 resources may be accommodated in one RB. Since the PUCCH format 1 dynamically changes, the RB 2213 that is not used for the PUCCH format 1 may be used for transmitting a physical uplink shared channel (PUSCH), which is a physical channel for uplink data transmission. Therefore, the efficiency of uplink resource utilization can be increased.

23 illustrates a procedure of allocating a resource for PUCCH transmission to a terminal by a base station according to the seventh embodiment of the present invention.

Referring to FIG. 23, in step 2301, the base station sets the number of _RBs N _RB ⁽²⁾ for PUCCH format 2 and PUCCH format 3 in consideration of the number of terminals in a current cell, the number of terminals supporting carrier combining, and the like. The base station informs the N _RB ² to the higher signaling in common to all terminals in the cell.

The base station allocates the resource n _PUCCH ⁽²⁾ for PUCCH format 2 for each terminal in the N _RB ⁽²⁾ configured in step 2303. The base station commonly allocates a resource group (Parameter_B) for PUCCH format 3 shared by N terminals to a maximum of N terminals. The base station informs n _PUCCH ⁽²⁾ by dedicated higher signaling for each terminal, and informs N terminals of Parameter_B by dedicated higher signaling.

If downlink data to be transmitted to a predetermined terminal is generated, the base station transmits the PDCCH and PDSCH to the terminal in step 2305. Then, the UE acquires resources for PUCCH format 1 implicitly mapped from the received PDCCH, and the UE supporting PUCCH format 3 obtains Parameter_C from the received PDCCH.

24 illustrates a procedure of acquiring a resource for PUCCH transmission from a base station by a terminal according to the seventh embodiment of the present invention.

Referring to FIG. 24, the UE acquires the number of _RBs N _RB ⁽²⁾ for PUCCH format 2 and PUCCH format 3 from higher signaling common to the cells received from the base station in step 2401.

And the UE acquires the dedicated parent resource for PUCCH format 2 in the N _RB ⁽²⁾ obtained through a signaling n _PUCCH ⁽²⁾ received from the base station in step 2403. The UE acquires Parameter_B indicating which group is the PUCCH foramt 3 resource.

If downlink data is scheduled from the base station, the terminal acquires resources for PUCCH format 1 implicitly mapped from the PDCCH received from the base station in step 2405. Or, the UE acquires Parameter_C for dynamically signaling a resource for PUCCH format 3 from a specific field of the PDCCH.

The seventh embodiment can be variously modified. For example, the mapping positions of the RBs for PUCCH format 2 and the RBs for PUCCH format 3 can be freely positioned within N _RB ⁽²⁾ RBs. The RB for PUCCH format 3 may be located at the outermost part of the system transmission band than the RB for PUCCH format 2. In addition, the terminal device and the base station device of the seventh embodiment may be implemented as described with reference to FIGS. 14 and 15, respectively.

The embodiments of the present invention disclosed in the specification and the drawings are only specific examples to easily explain the technical contents of the present invention and aid the understanding of the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

Claims (11)

In the control channel resource allocation method of the base station,
Setting a resource block to which an uplink control channel resource for first control information transmission and an uplink control channel resource for second control information transmission are mapped when the control channel is allocated;
Performing upper signaling on the set resource block to all terminals in common;
Allocating an uplink control channel resource for transmitting the first control information and an uplink control channel resource for transmitting the second control information for each terminal in the configured resource block;
And notifying uplink control channel resources for transmitting the allocated first control information to the corresponding terminal through dedicated higher signaling. The method of claim 1, wherein the setting of the resource block comprises:
Set the resource block to which an uplink control channel resource for transmitting the first control information, an uplink control channel resource for transmitting the second control information, and an uplink control channel resource for transmitting HARQ-ACK are sequentially mapped. Control channel resource allocation method comprising the step of performing. The method of claim 2, wherein the notifying of the dedicated higher signaling is performed.
And transmitting the uplink control channel resource for transmitting the second control information to the dedicated higher signaling. The method of claim 2, wherein the notifying of the dedicated higher signaling is performed.
And notifying an uplink control channel resource for transmitting the first control information connected one-to-one with an uplink control channel resource for transmitting the second control information through the dedicated higher signaling. In the control channel resource acquisition method of the terminal,
Obtaining a resource block to which an uplink control channel resource for transmitting the first control information and an uplink control channel resource for transmitting the second control information are mapped;
And obtaining a musk link control channel resource for transmitting the first control information from the obtained resource block. The method of claim 5, wherein the acquiring an uplink control channel resource for transmitting the first control information comprises:
And acquiring an uplink control channel resource for transmitting the second control information. The method of claim 6, wherein the acquiring uplink control channel resource for transmitting the first control information is performed.
And determining an uplink control channel resource for transmitting the second control information from the uplink control channel resource for transmitting the first control information. The method of claim 6,
When the downlink control channel is received, determining whether the number of HARQ-ACK bits to be transmitted from the downlink control channel to the base station is greater than a predetermined bit;
And if the number of HARQ-ACK bits is greater than a predetermined bit, obtaining uplink control channel resources for transmitting second control information from the received downlink control channel. A resource block to which an uplink control channel resource for transmitting the first control information and an uplink control channel resource for transmitting the second control information are mapped to be higher-signaled to all terminals in common, and the first resource is set in the configured resource block. Allocating an uplink control channel resource for transmitting control information and an uplink control channel resource for transmitting the second control information for each terminal, and assigning an uplink control channel resource for transmitting the allocated first control information to the corresponding terminal. A base station notified by dedicated higher signaling,
Acquire a resource block to which an uplink control channel resource for transmitting the first control information and an uplink control channel resource for transmitting the second control information are mapped from the base station, and transmit the first control information in the obtained resource block. Control channel allocation system consisting of a terminal to obtain a musk link control channel resource for. The method of claim 9, wherein the base station
Set the resource block to which an uplink control channel resource for transmitting the first control information, an uplink control channel resource for transmitting the second control information, and an uplink control channel resource for transmitting HARQ-ACK are sequentially mapped. Control channel resource allocation system, characterized in that. 10. The method of claim 9,
The first control information is
Channel status information.
The second control information is
Control channel resource allocation system, characterized in that a large amount of uplink control information.

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