KR101835322B1 - Method anda apparatus for transmitting and receiving uplink conrtol information in wireless communication system - Google Patents

Abstract

The present invention relates to a method and an apparatus for transmitting and receiving uplink control information in a wireless communication system. In a method of receiving uplink control information in a base station of a wireless communication system according to an aspect of the present invention, a base station allocates resources for transmission of uplink control information, transmits resource allocation information of the resources, And wherein the resource uses a different constellation for each of a plurality of terminals, a plurality of information items, or a plurality of random access opportunities, so that one PUCCH format is associated with the plurality Terminals, the plurality of information, or the plurality of random access opportunities.

Description

TECHNICAL FIELD [0001] The present invention relates to a method and apparatus for transmitting and receiving uplink control information in a wireless communication system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting and receiving uplink control information in a wireless communication system.

First, a frame structure of a wireless communication system will be described with reference to FIG. 1 is a diagram showing a frame structure of an LTE (Long Term Evolution) system. As shown in FIG. 1, one frame includes ten subframes, and one subframe includes two slots. The time taken to transmit one subframe is called a transmission time interval (TTI). For example, one subframe may be 1 ms and one slot may be 0.5 ms.

One slot includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols. An OFDM symbol may be referred to as an Orthogonal Frequency Division Multiple Access (OFDMA) symbol or a Single-Carrier FDMA (SC-FDMA) symbol or symbol period.

One slot includes seven or six OFDM symbols according to the length of a cyclic prefix (hereinafter referred to as "CP"). The LTE system has a normal CP (normal CP) and an extended CP (extened CP). In the case of using a normal CP, one slot includes seven OFDM symbols, and when an extended CP is used, one slot includes six OFDM symbols. The extended CP is used when the delay spread is large.

And a Physical Uplink Control Channel (PUCCH) of the LTE system will be briefly described. Here, for convenience, the slot has a normal cyclic prefix, and the slot is composed of seven SC-FDMA symbols or clustered DFTs (OFDM) symbols or Nx SC-FDMA symbols, and the subframe includes two slots A general PUCCH mode will be described.

The UE can transmit uplink control information through the PUCCH. The uplink control information includes at least one of a Scheduling Request (SR), an Acknowledgment / Non-Acknowledgment (ACK / NACK) signal, a Channel Quality Indicator (CQI), a Precoding Matrix Indicator ), A rank indicator (RI), and the like. PUCCH carries various kinds of control information according to the format.

PUCCH formats 1, 1a and 1b use the same physical channel structure and modulation schemes are N / A (present or absent) or OOK (On-Off Keying), Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying), and the amount of transmitted information is different (present or absent), 1 bit, and 2 bits, respectively.

(m=0, 1, 2, 3)을 가지고 블록 와이즈(block-wise) 스프레드되어 수학식 1과 같은 신호가 생성된다. Y (n) is generated by multiplying the modulated complex symbol d (0) according to each format by a 12-length cyclically shifted sequence r _{u, v} ^(?) (N) (n = 0,1, ..., 11) . The block y (n) of the complex symbol is scrambled by S (n _s ) and the orthogonal sequence

(m = 0, 1, 2, 3), and a signal as shown in Equation (1) is generated.

The resource index n _PUCCH ⁽¹⁾ represents a resource for transmission of the PUCCH formats 1, 1a and 1b and ^is composed of an orthogonal sequence index n _OC (n _s ) and a circular motion a (n _s , l). The resource indices in the two resource blocks in two slots of one subframe are given as n '(n _s ).

The generated sequence has inter-slot hopping in one resource unit consisting of 7 symbols and 12 subcarriers. The generated SC-FDMA symbol or the scrambled DFTs symbol at the both ends in the time domain in the slot Nx SC-FDMA symbols (total of four symbols), and the three symbols in the slot are used as reference signals.

Here, the PUCCH resource index n _PUCCH ⁽¹⁾ is information on a scrambling code and a spread code used by each mobile station in the channel, and is used for distinguishing each mobile station. That is, each UE performs appropriate modulation according to the PUCCH format or purpose (e.g., ACK / NACK, SR, etc.) in the allocated PUCCH physical time and frequency resources, and generates and transmits a signal using the allocated resource index . The PUCCH resource indexes n _PUCCH ⁽¹⁾ , N _PUCCH ⁽¹⁾ , n _{PUCCH, ANRep} ⁽¹⁾ or n _{PUCCH, SRI} ^(1), etc. are the smallest Control Channel Elements Derived from the index or given in the upper layer.

PUCCH formats can be used for:

PUCCH format 1 is used for positive SR (positive SR). A positive SR means a case where a scheduling request is made. The PUCCH format 1a is used for 1-bit HARQ-ACK, and in case of FDD, it is used for 1-bit HARQ-ACK with positive SR. PUCCH format 1b is used for 2-bit HARQ-ACK and is used for 2-bit HARQ-ACK with positive SR. PUCCH format 1b is used for HARQ-ACK with channel selection.

PUCCH Format 2 is used for CQI / PMI or RI reporting when it is not multiplexed with HARQ-ACK. PUCCH format 2 is used for CQI / PMI or RI report multiplexed with HARQ-ACK when extended cyclic permutation is used.

PUCCH format 2a is used for CQI / PMI or RI reports multiplexed with 1 bit HARQ-ACK when general cyclic permutation is used. PUCCH format 2b is used for CQI / PMI or RI reports multiplexed with 2-bit HARQ-ACK when general cyclic permutation is used.

There is a case where the physical time of the PUCCH allocated for the ACK / NACK to the specific UE or the physical time or subframe of the PUCCH allocated for the SR and the subframe are the same and only the PUCCH resource (code and / or frequency) index is different . In this case, ACK / NACK is transmitted through the allocated ACK / NACK resources for a negative SR (negative SR). Negative SR means no scheduling request. However, for positive SR, ACK / NACK is transmitted to the allocated SR PUCCH resource. That is, modulation is performed on ACK / NACK and the value is transmitted using the allocated SR PUCCH resource.

The PUCCH formats 1, 1a, and 1b are designed to transmit uplink control information of one UE. Therefore, there is a problem that the efficiency of resources is lowered and the latency increases.

As described above, the conventional PUCCH format is designed to transmit uplink control information of one UE, which results in a decrease in resource efficiency and an increase in latency.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for transmitting and receiving uplink control information capable of increasing resource efficiency and reducing latency.

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, there is provided a method for receiving uplink control information in a base station of a wireless communication system, the base station allocating resources for transmission of uplink control information, And receives uplink control information from the at least one terminal through the resource, and the resource is used by the plurality of terminals, the plurality of information, or the plurality of random access opportunities by using different constellations One PUCCH format is multiplexed so that it can be used by the plurality of terminals, the plurality of information, or the plurality of random access opportunities.

In addition, the resource allocation information may include an index of the resource and information on the constellation.

Further, the information on the constellation may be a designation of the constellation.

Also, the information on the constellation may be a phase rotation value of the constellation.

Also, SR and ACK / NACK of two UEs can be multiplexed and transmitted through the resource.

In addition, when the ACK / NACK is 2 or more bits, the ACK / NACK can be bundled and transmitted.

According to another aspect of the present invention, there is provided a method of transmitting uplink control information in a terminal of a wireless communication system, the method comprising: receiving resource allocation information of a resource for transmission of uplink control information from a base station; And transmitting the uplink control information to the base station through the resource, wherein the resource uses a different constellation of a plurality of terminals, a plurality of information items, or a plurality of random access opportunities, The plurality of terminals, the plurality of information, or the plurality of random access opportunities.

According to still another aspect of the present invention, a base station of a wireless communication system includes a processor for allocating resources for transmission of uplink control information, a transmission module for transmitting resource allocation information of resources, And a receiving module for receiving uplink control information from at least one terminal through a plurality of terminals, wherein the resources are allocated to a plurality of terminals, a plurality of information items, or a plurality of random access opportunities by using different constellations, The PUCCH format is multiplexed so that it can be used by the plurality of terminals, the plurality of information, or the plurality of random access opportunities.

According to another aspect of the present invention, there is provided a terminal of a wireless communication system, including: a receiving module for receiving resource allocation information of a resource for transmission of uplink control information from a base station; And a transmission module for transmitting link control information, wherein the resource uses a different constellation for each of a plurality of terminals, a plurality of information items or a plurality of random access opportunities, so that one PUCCH format is used for the plurality of terminals , The plurality of information, or the plurality of random access opportunities.

According to embodiments of the present invention, resources can be multiplexed so that one PUCCH format can be used by a plurality of terminals or a plurality of pieces of information using constellation, thereby improving resource efficiency and reducing latency. have.

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.

1 is a diagram showing a frame structure of an LTE system.
2 shows a structure of a downlink sub-frame.
3 shows a structure of an uplink sub-frame.
4 is a diagram illustrating a case where two terminals are multiplexed.
5 is a diagram illustrating a case where four terminals are multiplexed.
6 is a diagram illustrating a method of transmitting 1-bit ACK / NACK and a method of transmitting 2-bit ACK / NACK.
7 is a diagram illustrating a configuration of a mobile terminal and a base station in which embodiments of the present invention can be implemented.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description, together with the accompanying drawings, is intended to illustrate exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced. The following detailed description includes specific details in order to provide a thorough understanding of the present invention. However, those skilled in the art will appreciate that the present invention may be practiced without these specific details. For example, although the following detailed description assumes that the mobile communication system is a 3GPP LTE system, it may be applied to any other mobile communication system such as IEEE 802.16, except for the peculiarities of the 3GPP LTE system .

In some instances, well-known structures and devices may be omitted or may be shown in block diagram form, centering on the core functionality of each structure and device, to avoid obscuring the concepts of the present invention. In the following description, the same components are denoted by the same reference numerals throughout the specification.

In the following description, it is assumed that the UE collectively refers to a mobile stationary or stationary user equipment such as a UE (User Equipment), an MS (Mobile Station), and an AMS (Advanced Mobile Station). It is also assumed that the base station collectively refers to any node at a network end that communicates with a terminal such as a Node B (NB), an eNode B (eNB), a Base Station (BS), and an Advanced Base Station (ABS).

First, the structure of the DL subframe and the UL subframe will be described with reference to FIGS. 2 and 3. FIG.

2 shows a structure of a downlink sub-frame.

The downlink subframe includes two slots in the time domain, and when a normal cyclic prefix (CP) is used, each slot includes seven OFDM symbols. The maximum 3 OFDM symbols (the maximum of 4 OFDM symbols for 1.4 MHz bandwidth) located at the front of the first slot in the subframe are control regions to which the control channels are allocated, and the remaining OFDM symbols are allocated to the physical downlink Is a data area to which a physical downlink shared channel (PDSCH) is allocated.

The Physical Downlink Shared Channel (PDCCH) includes a resource allocation and transmission format of a downlink shared channel (DL-SCH), a resource of an uplink shared channel (UL-SCH) Resource allocation of an upper layer control message such as allocation information, paging information on the PCH, system information on the DL-SCH, random access response transmitted on the PDSCH, and a set of transmission power control commands for individual terminals in an arbitrary terminal group Can carry. A plurality of PDCCHs can be transmitted in the control domain, and the UE can monitor a plurality of PDCCHs. The PDCCH is transmitted as a set of one or several consecutive Control Channel Elements (CCEs). The CCE is a logical allocation unit used to provide the PDCCH with the coding rate according to the state of the radio channel. The CCE corresponds to a plurality of resource element groups. The format of the PDCCH and the number of bits of the possible PDCCH are determined according to the relationship between the number of CCEs and the coding rate provided by the CCEs.

The base station determines the PDCCH format according to the DCI to be transmitted to the UE, and attaches a CRC (Cyclic Redundancy Check) to the control information. The CRC is masked with a Radio Network Temporary Identifier (RNTI) according to the owner or use of the PDCCH. If the PDCCH is for a particular UE, the unique identifier of the UE, e.g., C-RNTI (Cell-RNTI), may be masked in the CRC. Alternatively, if the PDCCH is a PDCCH for a paging message, a paging indication identifier, e.g., P-RNTI (P-RNTI), may be masked on the CRC. If the PDCCH is for a system information block (SIB), a system information identifier (SI-RNTI) may be masked in the CRC. Random Access-RNTI (RA-RNTI) may be masked in the CRC to indicate a random access response that is a response to the transmission of the UE's random access preamble.

3 shows a structure of an uplink sub-frame.

The UL subframe can be divided into a control region and a data region in the frequency domain. A physical uplink control channel (PUCCH) for transmitting uplink control information is allocated to the control region. A physical uplink shared channel (PUSCH) for transmitting data is allocated to the data area. In 3GPP LTE Rel-8/9, in order to maintain a single carrier characteristic, the UE does not simultaneously transmit PUCCH and PUSCH or a plurality of PUCCHs.

The PUSCH is mapped to an uplink shared channel (UL-SCH) which is a transport channel. The uplink data transmitted on the PUSCH may be a transport block that is a data block for the UL-SCH transmitted during the TTI. The transport block may be user information. Alternatively, the uplink data may be multiplexed data. The multiplexed data may be a multiplexed transport block and control information for the UL-SCH. For example, the control information multiplexed on the data may include a channel quality indicator (CQI), a precoding matrix indicator (PMI), a HARQ, a rank indicator (RI), and the like. Alternatively, the uplink data may be composed of only control information.

Next, the PUCCH will be described.

A PUCCH for one UE is allocated as a resource block pair (RB pair) in a subframe. The resource blocks belonging to the resource block pair occupy different subcarriers in the first slot and the second slot. The frequency occupied by the resource blocks belonging to the resource block pair allocated to the PUCCH is changed based on the slot boundary. It is assumed that the RB pair allocated to the PUCCH is frequency-hopped at the slot boundary. The UE transmits the uplink control information through different subcarriers according to time, thereby obtaining a frequency diversity gain. and m is a position index indicating the logical frequency domain position of the resource block pair allocated to the PUCCH in the subframe.

PUCCH carries various kinds of control information according to the format. PUCCH format 1 carries a scheduling request (SR). At this time, an on-off keying (OOK) method can be applied. The PUCCH format 1a carries an ACK / NACK (Acknowledgment / Non-Acknowledgment) modulated with a BPSK (Bit Phase Shift Keying) scheme for one codeword. PUCCH format 1b carries ACK / NACK modulated by QPSK (Quadrature Phase Shift Keying) scheme for two codewords. PUCCH Format 2 carries a Channel Quality Indicator (CQI) modulated with a QPSK scheme. PUCCH formats 2a and 2b carry CQI and ACK / NACK.

Table 1 shows the modulation scheme according to the PUCCH format and the number of bits in the subframe.

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

Next, a method for transmitting and receiving uplink control information in a wireless communication system according to an embodiment of the present invention will be described.

In an embodiment of the present invention, a method of using one PUCCH format and resource for a plurality of terminals or additional information is proposed, and a method for distinguishing between a plurality of terminals or a plurality of information, a multiplexing of ACK / NACK and SR (multiplexing) technique.

According to an embodiment of the present invention, the PUCCH formats may be changed to be used by a plurality of terminals. Alternatively, the PUCCH formats are used for one terminal as in the conventional art, but can be changed to transmit additional information. As an example of such a modification method, constellation related to modulation can be used separately.

4 is a diagram illustrating a case where two terminals are multiplexed.

FIG. 4 shows a case in which two terminals use one PUCCH format by using the constellation classification. That is, the first terminal may use BPSK modulation (e.g., +1, -1) and the second terminal may use a 90 degree phase rotated constellation (e.g., + j, -j) . The signal received at the base station becomes a constellation of QPSK type so that the signals received from the two terminals can be detected and demodulated while maintaining orthogonality between them.

The method of FIG. 4 can be regarded as making the PUCCH format 1a use the two terminals using phase rotation or dividing the PUCCH format 1b into two terminals.

5 is a diagram illustrating a case where four terminals are multiplexed.

FIG. 5 shows a case where four terminals use one PUCCH format using the distinction of constellation. At this time, information corresponding to each constellation position can be interpreted as present or absence. That is, each of the four terminals does not transmit or transmit corresponding information with respective constellations (e.g., +1, -1, + j, and -j). That is, the base station compares the detected value with a specific threshold value. If the detected value is larger, the base station determines that the terminal transmits information, and if the detected value is smaller, it determines that the terminal has not transmitted the information . The signal received at the base station becomes a constellation of the QPSK type and the signals received from the four terminals can be detected and demodulated while maintaining orthogonality between each other.

The method of FIG. 5 can be regarded as making the PUCCH format 1 use four terminals using phase rotation or / and amplitude modification, or the PUCCH format 1b can be used by dividing four terminals .

It is possible to allow a larger number of terminals to use one PUCCH format by using the constellation corresponding to a higher order modulation in the above-described method.

One PUCCH format may be dedicated to a specific plurality of terminals or may be used as a plurality of opportunities rather than being allocated to a specific plurality of terminals, May be used in the form of random access.

In the above description, one PUCCH format is used by a plurality of terminals. However, one PUCHH format may be used by a plurality of terminals. In addition, one PUCHH format may be used by a plurality of pieces of information of a plurality of terminals.

In applying the method described above, it is necessary to change the basic modulation or constellation of the PUCCH format. Therefore, it is not possible to distinguish a plurality of terminals or information using the same resource with only an existing resource index. Additional signaling information is needed to distinguish these terminals or to distinguish information. Such signaling information is information related to the constellation, which may be a value associated with the designation of a particular constellation, or a value associated with the phase rotation of the constellation.

For example, if each of the two terminals is multiplexed using a constellation of the BPSK type, then the additional signaling information may be a real region (e.g., +1, -1) associated with the constellation Or an imaginary region (e.g., + j, -j) is used. Alternatively, the additional signaling information may be used to provide a zero degree (or 45 degrees) phase rotation (e.g., +1, -1 or +1 + j, -1-j) , 135-degree) phase rotation (e.g., + j, -j or -1 + j, 1-j). The additional signaling information may comprise one bit. As an application example of this example, the SRs of the two terminals can be multiplexed by the method described above. As another application example of this example, one bit ACK / NACK of two terminals can be multiplexed by the method described above. As another application example of the present example, the SR and 1-bit ACK / NACK of the two terminals can be multiplexed as described above.

As another example, when each of the four terminals is multiplexed using constellation for existing or absent information, the additional signaling information includes information about the quadrant associated with the constellation (e.g., +1, -1 , + j, -j). Alternatively, the additional signaling information may include information about the phase rotation (e.g., 0 degrees, 90 degrees 180 degrees, 270 degrees = +1, -1, + j, 175 degrees, 120 degrees = +1 + j, -1 + j, -1-j, 1-j). The additional signaling information may be composed of two bits. As an application example of this example, SRs of four terminals can be multiplexed by the above method.

In the above, in addition to the PUCCH indexing method in the prior art in determining resources to be used by the UE, the need for signaling about what resources are actually used in the PUCCH has been described. Alternatively, the base station may perform signaling on a resource implicitly used to the terminal. For example, when there is UE-specific information such as the RNTI of the UE, the resource can be determined through information obtained through an arbitrary operation of the information. An example of an arbitrary operation may be a modulo 2 operation or a modulo 4 operation. In this case, the base station does not need to transmit signaling information separately, but there may be restrictions when scheduling the base resources.

In applying the present invention, the channel through which the additional signaling information is transmitted is not a limitation of the present invention. For example, the PUCCH-Config information element (IE), the PUCCH-ConfigDedicated IE, and the SchedulingRequestConfig IE defined in the prior art, In addition, one or two additional signaling information may be added where applicable. In the case of separately defining a message or IE for transmitting additional signaling information, the above-mentioned additional signaling information should be included in the defined message or IE along with the resource index.

Next, a method of multiplexing ACK / NACK and SR by applying the present invention will be described with reference to FIG.

The physical time allocated for ACK / NACK to a particular UE and the physical time and frequency PUCCH allocated for SR PUCCH and SR may be the same or different. In any case, ACK / NACK is transmitted to the allocated ACK / NACK resources for a negative SR (when there is no scheduling request) at the time when the SR resource allocated to the UE becomes available. However, ACK / NACK is transmitted to the allocated SR PUCCH resource for a positive SR (if there is a scheduling request). That is, modulation is performed on ACK / NACK and the value is transmitted using the allocated SR PUCCH resource. That is, SR resources must be able to transmit ACK / NACK. Also, the ACK / NACK may be 1 bit or 2 bits as required.

For example, when two UEs are multiplexed using constellation of BPSK type to distinguish between SR (presence or absence) and 1-bit ACK / NACK, only 1-bit ACK / NACK transmission is possible, ACK / NACK can not be transmitted. Therefore, a method of performing transmission of 2-bit ACK / NACK is needed.

In the embodiment of the present invention, it is proposed to bundle and transmit 2-bit ACK / NACK for 2-bit ACK / NACK transmission. That is, an ACK is transmitted only when the response to the 2-bit HARQ is ACK, and a NACK is transmitted in the remaining case. Accordingly, the 1-bit HARQ response and the 2-bit HARQ response can use the same transmission format.

6 is a diagram illustrating a method of transmitting 1-bit ACK / NACK and a method of transmitting 2-bit ACK / NACK. In the example of FIG. 6, only ACK / NACK is shown for the sake of convenience, but this is for convenience and may include additional information such as SR. That is, in the case of positive SR, the example of FIG. 6 can be applied.

In another method of transmitting 2-bit ACK / NACK, 1-bit ACK / NACK of 2-bit ACK / NACK is transmitted together with SR, and other 1-bit ACK / NACK is transmitted using resources allocated for ACK / NACK. If a resource for an ACK / NACK and a resource for an SR are allocated to a specific UE, the base station first detects a resource for the SR and demodulates the SR and the 1-bit ACK / NACK, and if the SR is detected, NACK can be detected and the remaining 1-bit ACK / NACK can be demodulated.

As another method of transmitting 2-bit ACK / NACK, multiplexing of ACK / NACK can be prohibited in the SR resource to which the present invention is applied. That is, when the ACK / NACK resource and the SR resource are allocated at the same time, each UE generates and transmits signals for two resources. When an ACK / NACK and an SR are allocated for a specific UE, the BS detects an allocated SR resource, demodulates the SR resource to determine the SR, and detects an ACK / NACK resource to detect 1 or 2 It is possible to demodulate bit ACK / NACK.

Alternatively, it may be considered to increase the symbol space of the ACK / NACK channel or the SR channel. For example, in order to increase the symbol space for the SR channel, it is possible to use M-ary Amplitude Modulation or to divide the slot boundary into two channels. That is, if an ACK / NACK of X bits is to be transmitted, the symbol space of the SR can be configured to expand or hold the symbol space to accommodate X bits.

Or, conversely, the SR information can be replaced with an ACK / NACK channel. That is, since the symbol space of the SR resource is small, if the SR information is extended to the QPSK in the case of the PUCCH format 1a and the BPSK information is transmitted on the real axis, the BPSK information is transmitted to the imaginary axis to inform the SR information Phase rotation is used. When ACK / NACK is to be transmitted in PUCCH format 1b, two methods can be considered. One is to bundle the ACK / NACK so that all of the ACKs are allocated to one state and all of the other cases are allocated to another state. By doing so, after the bit occupied by the ACK / NACK information is reduced to 1 bit, it is possible to apply a phase shift to transmit SR information in the QPSK space as described above. Alternatively, when it is difficult to bundle the ACK / NACK information, it is possible to expand the QPSK to 8PSK and include SR information in the 1-bit space. Alternatively, when it is assumed that information is transmitted on a slot-by-slot basis as described above, it is also possible to transmit SR information through differential modulation between slots. For example, if there is no SR, it is transmitted as PUCCH format 1b. If there is SR, a signal is transmitted by applying a phase shift to the second slot for the first slot. At this time, the configuration in which the SR is mapped can be reversed.

7 is a diagram illustrating a configuration of a mobile station and a base station in which the embodiments of the present invention described above can be implemented, according to another embodiment of the present invention.

The AMS and the ABS comprise antennas 500 and 510 capable of transmitting and receiving information, data, signals, and / or messages, a transmission module (Tx module 540, 550 A memory 580, 590 for storing information related to communication with the base station, and a processor (not shown) for controlling the transmitting module, the receiving module, and the memory 520, and 53, respectively. At this time, the base station may be a femto base station or a macro base station.

The antennas 500 and 510 transmit signals generated by the transmission modules 540 and 550 to the outside or receive wireless signals from the outside and transmit the signals to the reception modules 560 and 570. When a multi-antenna (MIMO) function is supported, more than two antennas may be provided.

Processors 520 and 530 typically control the overall operation of the mobile terminal or base station. In particular, the processor may include a control function for performing the above-described embodiments of the present invention, a medium access control (MAC) frame variable control function according to service characteristics and propagation environment, a handover function, Can be performed. The processors 520 and 530 may further include a cryptographic module that can control encryption of various messages and a timer module that controls transmission and reception of various messages, respectively.

The processor 520 of the base station allocates resources for transmission of uplink control information. At this time, resources for transmission of uplink control information are multiplexed so that one PUCCH format can be used by a plurality of terminals or a plurality of pieces of information using constellation.

The transmission modules 540 and 550 may perform predetermined coding and modulation on signals and / or data to be transmitted to the outside and transmit them to the antennas 500 and 510 after they are scheduled from the processor.

The transmission module 540 of the base station transmits resource allocation information of resources for transmission of uplink control information and the transmission module 550 of the terminal transmits uplink control information through the resources to the base station.

The receiving modules 560 and 570 decode and demodulate the radio signals received from the outside through the antennas 500 and 510 to restore them in the form of original data and transmit them to the processors 520 and 530 .

The receiving module 560 of the base station receives uplink control information from at least one terminal through a resource for transmission of uplink control information, and the receiving module 570 of the terminal receives the uplink control information And receives resource allocation information of the resource.

The memories 580 and 590 may store a program for processing and controlling the processor, and may store the input / output data (in the case of the mobile station, UL grant, system information, station identifier STID), a flow identifier (FID), an action time (Action Time), area allocation information, frame offset information, and the like).

The memory may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g., SD or XD memory), a RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an optical disk.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The foregoing description of the preferred embodiments of the invention disclosed herein has been presented to enable any person skilled in the art to make and use the present invention. While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. For example, those skilled in the art can utilize each of the configurations described in the above-described embodiments in a manner of mutually combining them.

Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (20)

In a wireless communication system, when a base station receives uplink control information,
Allocating the same resources for uplink control information transmission to a plurality of terminals;
Allocating different constellations to be used in the same resource to the plurality of terminals;
A resource index indicating the same resource and constellation information about a constellation to be used by the corresponding terminal are transmitted to each of the plurality of terminals; And
And receiving uplink control information from the plurality of terminals through the same resource based on the resource index and the constellation information,
Wherein the same resource is multiplexed so that one PUCCH format can be used by the plurality of terminals by using different constellations of the plurality of terminals. The method according to claim 1,
And the constellation information is a constellation to be used by the corresponding terminal. The method according to claim 1,
And the constellation information is a phase rotation value of a constellation to be used by the corresponding terminal. In a wireless communication system, when a UE transmits uplink control information,
A resource index indicating a resource for transmitting uplink control information from a base station, and a constellation information about a constellation to be used by the terminal; And
And transmitting uplink control information of the UE through the resource to the base station based on the resource index and the constellation information,
Wherein the resources are multiplexed such that one PUCCH format can be used by the plurality of terminals by using different constellations of the plurality of terminals including the terminal. 5. The method of claim 4,
Wherein the constellation information is a constellation to be used by the terminal. 5. The method of claim 4,
And the constellation information is a phase rotation value of a constellation to be used by the terminal. In a wireless communication system, when a base station receives uplink control information,
A processor for allocating the same resource for transmission of uplink control information to a plurality of terminals and different constellations to be used for the same resource to the plurality of terminals;
A transmission module for transmitting a resource index indicating the same resource to each of the plurality of terminals and constellation information about a constellation to be used by the corresponding terminal; And
And a receiving module for receiving uplink control information from the plurality of terminals through the same resource based on the resource index and the constellation information,
Wherein the same resource is multiplexed such that one PUCCH format can be used by the plurality of terminals by using different constellations of the plurality of terminals. 8. The method of claim 7,
Wherein the constellation information is a constellation to be used by the corresponding terminal. 8. The method of claim 7,
Wherein the constellation information is a phase rotation value of a constellation to be used by the corresponding terminal. In a wireless communication system, when a UE transmits uplink control information,
A receiving module for receiving a resource index indicating a resource for transmitting uplink control information from a base station and a constellation information about a constellation to be used by the terminal; And
And a transmission module for transmitting uplink control information of the UE through the resource to the base station based on the resource index and the constellation information,
Wherein the resource is multiplexed so that one PUCCH format can be used by the plurality of terminals by using different constellations of the plurality of terminals including the terminal. 11. The method of claim 10,
Wherein the constellation information is a constellation used by the terminal. 11. The method of claim 10,
Wherein the constellation information is a phase rotation value of a constellation to be used by the terminal. delete delete delete delete delete delete delete delete

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