JP6039192B2 - Methods and equipment for transmitting channel quality control information in wireless connection systems - Google Patents

Description

The present invention relates to a wireless connection system and relates to a method and an apparatus for transmitting uplink control information (UCI) including channel quality control information in a carrier-aggregated environment (that is, a multi-component carrier environment). The present invention also relates to a method and an apparatus for obtaining the number of resource elements allocated to the UCI when the UCI is piggybacked on data on the uplink shared channel (PUSCH).

The 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) Rel-8 or Rel-9 System (LTE System) uses a single component carrier (CC) divided into multiple bands. A multi-carrier modulation (MCM) method is used. However, in the 3GPP advanced LTE system (hereinafter referred to as LTE-A system), carrier aggregation (CA:) uses one or more component carriers in combination in order to provide a wider system bandwidth than the LTE system. A method such as Carrier Aggregation) can be used. Carrier aggregation can also be referred to as carrier matching, multi-component carrier environment (Multi-CC) or multi-carrier environment.

In a single CC environment that is not multi-CC, such as an LTE system, only the case where uplink control information (UCI) and data are multiplexed using multiple layers on one CC is described.

However, one or more CCs can be used in a carrier-aggregated environment, and the number of UCIs can be increased in multiples in proportion to the number of CCs used. For example, in the case of rank indication (RI: Rank Indication) information, the LTE system has an information size of 2 bits to 3 bits. On the other hand, in the LTE-A system, since the total bandwidth can be expanded to 5 CCs, the RI information can have an information bit size of up to 15 bits.

In such a case, not only the UCI transmission method defined in the LTE system cannot transmit the uplink control information having a large size up to 15 bits, but also the existing Reed-Muller (RM) code cannot encode the uplink control information. .. Therefore, in the LTE-A system, a new transmission method for UCI having a large size of information is desired.

The present invention has been made in view of the above points, and an object of the present invention is to provide a method for efficiently encoding and transmitting uplink control information in a multi-carrier environment (or a carrier-aggregated environment).

Another object of the present invention is to provide a method for determining the number of resource elements (REs) assigned to a UCI when the UCI is piggybacked on data on the PUSCH.

Yet another object of the present invention is to transmit channel quality control information (CQI and / or PMI) when uplink control information is retransmitted using two or more transmission blocks (TB: Transport Block). The purpose is to provide a method for obtaining the number of resource elements (RE) required for the above.

Yet another object of the present invention is to provide a terminal device and / or a base station device that provides the above method.

The technical problem to be achieved by the present invention is not limited to the above technical problem, and another technical problem not mentioned is described in the technical field to which the present invention belongs from the following examples of the present invention. It will be considered by those with normal knowledge.

The present invention relates to a method and an apparatus for transmitting uplink control information (UCI) including channel quality control information in a carrier wave aggregation environment.

As a uniform form of the present invention, in a wireless connection system that provides a hybrid automatic repeat request (HARQ), a method of transmitting channel quality control information using two transmission blocks is such that the terminal uses downlink control information (DCI). A step of receiving a physical downlink control channel (PDCCH) signal including, a step of calculating the number of encoded symbols (Q') required to transmit channel quality control information using DCI, and a step of encoding symbols. It can include a step of transmitting channel quality control information via a physical uplink shared channel (PUSCH) based on the number.

As another aspect of the present invention, in a wireless connection system that provides a hybrid automatic repeat request (HARQ), a terminal that transmits channel quality control information using two transmission blocks is a transmission module for transmitting a wireless signal. , A receiving module for receiving radio signals and a processor for providing transmission of channel quality control information can be included. Here, the terminal receives the physical downlink control channel (PDCCH) signal including the downlink control information (DCI), and the number of coded symbols required to transmit the channel quality control information using DCI (Q). ') Can be calculated and channel quality control information can be transmitted via the physical uplink shared channel (PUSCH) based on the number of encoded symbols.

を用いて計算され，ＤＣＩには，チャネル品質制御情報を送信するための第１伝送ブロックに関する副搬送波の個数情報（Ｍ^{ＰＵＳＣＨ−ｉｎｉｔｉａｌ（ｘ）} _ＳＣ），第１伝送ブロックと関連する符号ブロックの個数に関する情報（Ｃ^（ｘ）），及び符号ブロックのサイズに関する情報（Ｋ^（ｘ） _ｒ）が含まれてもよい。ここで，‘ｘ’は，二つの伝送ブロックに対するインデクスを表す。 In these aspects of the present invention, the number of coded symbols (Q') is expressed by the formula.

The DCI contains information on the number of subcarriers related to the first transmission block for transmitting channel quality control information ( ^{MPUSCH-initial (x)} _SC ), and the code block associated with the first transmission block. Information about the number (C ^(x) ) and information about the size of the code block (K ^(x) _r ) may be included. Here,'x' represents an index for two transmission blocks.

In these aspects of the present invention, the first transmission block is preferably the transmission block having the highest modulation and coding method (MCS) level among the two transmission blocks. However, if the modulation and coding method (MCS) levels of the two transmission blocks are the same, the first transmission block may be the first transmission block of the two transmission blocks.

In the step of transmitting the channel quality control information, the terminal can piggyback the channel quality control information to the uplink data to be retransmitted using the HARQ method and transmit the channel quality control information.

を用いて計算できる。 In this case, the terminal may further calculate the information about the uplink data, and the information about the uplink data is an expression.

Can be calculated using.

As yet another aspect of the present invention, in a wireless connection system that provides a hybrid automatic repeat request (HARQ), a method of receiving channel quality control information using two transmission blocks is such that the base station sends the downlink control information to the terminal. A step of transmitting a physical downlink control channel (PDCCH) signal including (DCI) and a step of receiving the channel quality control information from the terminal via the physical uplink shared channel (PUSCH) can be included.

を用いて計算され，ＤＣＩには，チャネル品質制御情報を送信するための第１伝送ブロックに関する副搬送波の個数情報（Ｍ^{ＰＵＳＣＨ−ｉｎｉｔｉａｌ（ｘ）} _ＳＣ），第１伝送ブロックと関連する符号ブロックの個数に関する情報（Ｃ^（ｘ）），及び符号ブロックのサイズに関する情報（Ｋ^（ｘ） _ｒ）が含まれてもよい。ここで，‘ｘ’は，二つの伝送ブロックに対するインデクスを表す。 In this case, the number of coded symbols (Q') required to transmit channel quality control information is the formula.

The DCI contains information on the number of subcarriers related to the first transmission block for transmitting channel quality control information ( ^{MPUSCH-initial (x)} _SC ), and the code block associated with the first transmission block. Information about the number (C ^(x) ) and information about the size of the code block (K ^(x) _r ) may be included. Here,'x' represents an index for two transmission blocks.

In still another aspect of the present invention, the first transmission block is preferably the transmission block having the highest modulation and coding method (MCS) level of the two transmission blocks. However, if the modulation and coding method (MCS) levels of the two transmission blocks are the same, the first transmission block may be the first transmission block.

を用いて計算できる。 Here, the channel quality control information may be received by piggybacking on the uplink data retransmitted using the HARQ method. In this case, the information about the uplink data is the expression

Can be calculated using.

The above aspects of the present invention are only a part of suitable examples of the present invention, and various examples reflecting the technical features of the present invention have ordinary knowledge in the field of the present invention. Will be derived and understood by the person from the detailed description of the invention described below.

According to the examples of the present invention, the following effects can be obtained.

First, the uplink control information can be efficiently encoded and transmitted in a multi-carrier environment (or a carrier-aggregated environment).

Second, when transmitting uplink control information using two or more transmission blocks, the number of resource elements (RE) required to transmit channel quality control information (CQI and / or PMI) is determined. It can be calculated accurately for each transmission block.

Third, when the CQI is piggybacked on the PUSCH, the number of REs required to transmit the CQI can be accurately calculated for each transmission block. In particular, when the initial resource values of the two transmission blocks differ due to HARQ retransmission or the like, the number of REs required for CQI / PMI transmission through PUSCH can be accurately calculated.

The effects obtained from the examples of the present invention are not limited to the effects mentioned above, and other effects not mentioned are described in the following description of the examples of the present invention. It will be clearly derived and understood by those with ordinary knowledge in the field of technology to which it belongs. That is, an unintended effect in carrying out the present invention may also be derived from the examples of the present invention by a person having ordinary knowledge in the field of the present invention.

The accompanying drawings are included as part of a detailed description to aid in understanding the invention and provide various examples of the invention. In addition, the accompanying drawings are used to explain embodiments of the present invention together with detailed explanations.

It is a figure for demonstrating the physical channels used in the 3GPP LTE system, and the general signal transmission method using these channels. It is a figure for demonstrating one structure of a terminal and a signal processing procedure for a terminal transmitting an uplink signal. It is a figure for demonstrating one structure of a base station and a signal processing procedure for a base station to transmit a downlink signal. It is a figure for demonstrating one structure of a terminal, SC-FDMA system and OFDMA system. It is a figure explaining the signal map system on the frequency domain for satisfying a single carrier wave characteristic in a frequency domain. It is a block diagram for demonstrating transmission processing of a reference signal for demodulating a transmission signal by SC-FDMA scheme. It is a figure which shows the symbol position which a reference signal is mapped in the subframe structure by SC-FDMA system. It is a figure which shows the signal processing procedure which a DFT process output sample is mapped to a single carrier wave in cluster SC-FDMA. It is a figure which shows the signal processing procedure in which a DFT process output sample is mapped to a multicarrier wave in cluster SC-FDMA. It is a figure which shows the signal processing procedure in which a DFT process output sample is mapped to a multicarrier wave in cluster SC-FDMA. It is a figure which shows the signal processing procedure of the division SC-FDMA. It is a figure which illustrates the structure of the uplink subframe which can be used in the Example of this invention. It is a figure which illustrates the processing procedure of UL-SCH data and control information which can be used in an Example of this invention. It is a figure which shows an example of the multiplexing method of the uplink control information and UL-SCH data on PUSCH. It is a figure which shows the multiplexing of the control information and UL-SCH data in the MIMO system. It is a figure which shows an example of the method of multiplexing and transmitting a plurality of UL-SCH transmission blocks and uplink control information by a terminal by one Example of this invention. It is a figure which shows an example of the method of multiplexing and transmitting a plurality of UL-SCH transmission blocks and uplink control information by a terminal by one Example of this invention. It is a figure which shows an example of the method of mapping a physical resource element for transmitting uplink data and uplink control information. As an example of the present invention, it is a figure which shows an example of the method of transmitting uplink control information. As an embodiment of the present invention, it is a figure which shows another example of the method of transmitting uplink control information. It is a figure which shows the apparatus which can embody the method described in FIGS. 1 to 20.

An embodiment of the present invention provides a method and an apparatus for transmitting and receiving uplink control information in a carrier-aggregated environment (or a multi-component carrier environment). Further, a method and an apparatus for transmitting and receiving rank instruction (RI) information and a method and an apparatus for applying an error detection code to the uplink control information are disclosed.

In the following examples, the components and features of the present invention are combined into a predetermined form. Each component or feature may be considered selective unless otherwise stated. Each component or feature may be in a form that is not combined with other components or features, or some components and / or features may be combined to form an embodiment of the present invention. The order of operations described in the examples of the present invention can be changed. A partial configuration or feature of one embodiment may be included in another embodiment or may be replaced with a corresponding configuration or feature of another embodiment.

In the description of the drawings, procedures or steps that are judged to obscure the gist of the present invention are omitted, and procedures or steps that can be understood by those skilled in the art are also omitted.

In the present specification, an embodiment of the present invention will be described focusing on a data transmission / reception relationship between a base station and a mobile station. Here, the base station has a meaning as a terminal node of a network that directly communicates with a mobile station. In this specification, the specific operation described as being performed by the base station may be performed by a higher-level node of the base station in some cases.

That is, in a network consisting of a large number of network nodes including a base station, various operations performed for communication with a mobile station are performed by the base station or a network node other than the base station. Here, "base station" can be replaced with terms such as fixed station, node B, extended node B (eNB), advanced base station (ABS: Advanced Base Station), or access point.

In addition, the term "terminal" refers to terms such as a user device (UE), a mobile device (MS), a subscriber terminal (SS), a mobile subscriber terminal (MSS), a mobile terminal, or an advanced mobile station (AMS). It can be replaced.

The transmitting end refers to a fixed and / or mobile node that provides a data service or voice service, and the receiving end refers to a fixed and / or mobile node that receives a data service or voice service. Therefore, in the uplink, the mobile station is the transmitting end and the base station is the receiving end. Similarly, in the downlink, the mobile station is the receiving end and the base station is the transmitting end.

An example of the present invention is an IEEE 802. Supported by standard documents disclosed in at least one of the xx system, 3GPP system, 3GPP LTE system and 3GPP2 system, in particular, the embodiments of the present invention are 3GPP TS 36.211, 3GPP TS 36.212, 3GPP TS. Supported by the 36.213 and 3GPP TS 36.321 documents. That is, refer to these documents for obvious steps or parts not described in the examples of the present invention. All terms disclosed in this document can be explained by the above standard documents.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The detailed description disclosed below, along with the accompanying drawings, is intended to illustrate exemplary embodiments of the invention and does not represent the only embodiment in which the invention can be practiced.

In addition, the specific terms used in the examples of the present invention are provided to assist the understanding of the present invention, and the use of these specific terms is in other forms without departing from the technical idea of the present invention. May be changed to.

The following technologies include code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), and single carrier frequency division multiple access (SC-FDMA). It can be used for various wireless connection systems such as.

CDMA may be a general purpose terrestrial wireless connection (UTRA) or a wireless technology such as CDMA2000. TDMA may be a radio technology such as World Mobile Communication System (GSM) / General Packet Radio Service (GPRS) / GSM Evolutionary Enhanced Data Rate (EDGE). OFDMA may be a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.11 (WiMAX), IEEE 802-20, Evolution UTRA (E-UTRA).

UTRA is part of the General Purpose Mobile Communication System (UMTS). 3GPP LTE is part of Evolved UMTS (E-UMTS) using E-UTRA, which employs OFDMA on the downlink and SC-FDMA on the uplink. The LTE-A system is an improved system from the 3GPP LTE system. In order to clarify the description of the technical features of the present invention, the examples of the present invention will be described mainly on the 3GPP LTE / LTE-A system, but they can also be applied to the IEEE 802.11e / m system and the like. ..

1.3 Overview of GPP LTE / LTE-A system In a wireless connection system, a terminal receives information from a base station via a downlink (DL) and transmits information to the base station via an uplink (UL). .. The information sent and received by the base station and the terminal includes general data information and various control information, and there are various physical channels depending on the type / use of the information sent and received by both.

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

The terminal that is turned on again or newly entered the cell performs initial cell search work such as synchronizing with the base station in the S101 stage. For this purpose, the terminal receives the primary synchronization channel (P-SCH: Primary Synchronization Channel) and the secondary synchronization channel (S-SCH: Secondary Synchronization Channel) from the base station and synchronizes with the base station to synchronize the cell ID and the like. Get information about.

After that, the terminal can receive the physical broadcast channel (PBCH) signal from the base station and acquire the broadcast information in the cell. On the other hand, the terminal can receive the downlink reference signal (DLRS) at the initial cell search stage to check the downlink channel status.

The terminal that has completed the initial cell search receives the physical downlink control channel (PDCCH) and the physical downlink shared channel (PDSCH) based on the physical downlink control channel information at the S102 stage, and receives more specific system information. Can be obtained.

After that, the terminal can perform a random access procedure such as the subsequent steps S103 to S106 in order to complete the connection to the base station. To this end, the terminal sends a preamble via the physical random access channel (PRACH) (S103) and receives a response message to the preamble via the physical downlink control channel and the corresponding physical downlink sharing channel. Can be done (S104). In contention-based random access, the terminal resolves conflicts such as sending additional physical random access channel signals (S105) and receiving physical downlink control channel signals and their corresponding physical downlink shared channel signals (S106). A procedure (Contention Resolution Procedure) can be performed.

The terminal that has performed the above procedure subsequently receives the physical downlink control channel signal and / or the physical downlink shared channel signal (S107) and the physical uplink sharing as a general uplink / downlink signal transmission procedure. A channel (PUSCH) signal and / or a physical uplink control channel (PUCCH) signal can be transmitted (S108).

The control information transmitted by the terminal to the base station is collectively called uplink control information (UCI). UCI is a hybrid automatic repeat request (HARQ) -acknowledged response (ACK) / negative response (NACK), schedule request (SR), channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator information ( RI) and the like are included.

In the LTE system, UCI is mainly transmitted periodically via PUCCH, but if control information and traffic data should be transmitted at the same time, it may be transmitted via PUSCH. In addition, UCI may be transmitted aperiodically via PUSCH according to network requests / instructions.

FIG. 2 is a diagram for explaining a structure of a terminal and a signal processing procedure for the terminal to transmit an uplink signal.

In order to transmit the uplink signal, the terminal scramble module 210 can scramble the transmission signal using the terminal-specific scramble signal. The scrambled signal is input to the modulation mapper 220 and depends on the type and / or channel state of the transmitted signal: 2-phase shift keying (BPSK), 4-phase shift keying (QPSK) or 16 quadrature amplitude modulation (QAM) / 64QAM. Modulated to complex symbols using the method. The modulated complex symbol is processed by the transformation precoder 230 and then input to the resource element mapper 240, which can map the complex symbol to the time-frequency resource element. The signal processed in this way can be transmitted from the antenna to the base station via the SC-FDMA signal generator 250.

FIG. 3 is a diagram for explaining a structure of a base station and a signal processing procedure for the base station to transmit a downlink signal.

In a 3GPP LTE system, a base station can transmit one or more codewords over the downlink. The codewords can be complex symbols in the scramble module 301 and the modulation mapper 302, respectively, similar to the uplink in FIG. Subsequently, the complex symbol is mapped to a plurality of layers by the layer mapper 303, and each layer is multiplied by the precoding matrix by the precoding module 304 and assigned to each transmitting antenna. Each antenna-specific transmission signal processed in this way can be mapped to a time-frequency resource element by the resource element mapper 305, and subsequently transmitted from each antenna via the OFDMA signal generator 306.

In a wireless communication system, when a terminal transmits a signal on the uplink, the peak-to-average power ratio (PAPR) becomes a problem as compared with the case where a base station transmits a signal on the downlink. Therefore, as described in relation to FIGS. 2 and 3, the uplink signal transmission uses the SC-FDMA method, unlike the OFDMA method used for the downlink signal transmission.

FIG. 4 is a diagram for explaining one structure of a terminal and the SC-FDMA system and the OFDMA system.

A 3GPP system (eg, an LTE system) employs OFDMA in the downlink and SC-FDMA in the uplink. Referring to FIG. 4, the terminal for uplink signal transmission and the base station for downlink signal transmission are a series-parallel converter 401, a subcarrier mapper 403, an M-point IDFT module 404, and a cyclic prefix (CP). ) It is the same in that it includes the additional module 406.

However, the terminal for transmitting signals by the SC-FDMA system further includes the N-point DFT module 402. The N-point DFT module 402 causes the transmitted signal to have a single carrier characteristic by canceling the influence of the IDFT processing of the M-point IDFT module 404 to some extent.

FIG. 5 is a diagram illustrating a signal mapping method on a frequency domain for satisfying a single carrier wave characteristic in the frequency domain.

FIG. 5 (a) shows a localized mapping method, and FIG. 5 (b) shows a distributed mapping method. Here, the cluster, which is a modified form of SC-FDMA, divides the DFT process output samples into subgroups by subcarrier mapping processing, and maps them discontinuously to the frequency domain (or subcarrier domain).

FIG. 6 is a block diagram for explaining a reference signal (RS) transmission process for demodulating a transmission signal by the SC-FDMA system.

In the LTE standard (for example, 3GPP release 8), in the case of data, the signal generated in the time domain is converted into a frequency domain signal by DFT processing, and after subcarrier mapping, IFFT processing is performed and transmitted (see FIG. 4). , RS is defined to omit the DFT process, generate it directly in the frequency domain (S610), map it on the subcarrier (S620), and then transmit it after the Fourier process (S630) and CP addition (S640). ..

FIG. 7 is a diagram showing symbol positions to which a reference signal (RS) is mapped in a subframe structure based on the SC-FDMA system.

FIG. 7 (a) shows that RS is located at the fourth SC-FDMA symbol of each of the two slots in one subframe in the case of normal CP. FIG. 7B shows that in the case of extended CP, RS is located at the third SC-FDMA symbol of each of the two slots in one subframe.

FIG. 8 is a diagram showing a signal processing procedure in which a DFT process output sample is mapped to a single carrier wave in cluster SC-FDMA. 9 and 10 are diagrams showing a signal processing procedure in which the DFT process output sample is mapped to multiple carriers in the cluster SC-FDMA.

FIG. 8 shows an example of applying an intra-carrier cluster SC-FDMA, and FIGS. 9 and 10 correspond to an example of applying an inter-carrier cluster SC-FDMA. FIG. 9 shows an example in which a single IFFT block generates a signal when subcarrier spacing (spacing) between adjacent component carriers is aligned in a situation where component carriers are continuously assigned in a frequency domain. Is shown. FIG. 10 shows a case where a signal is generated by a plurality of IFFT blocks in a situation where component carriers are assigned discontinuously (non-contiguous) in a frequency domain.

FIG. 11 is a diagram showing a signal processing procedure of segmented SC-FDMA.

Since the same number of IFFTs as an arbitrary number of DFTs are applied to the divided SC-FDMA, the relationship configuration between the DFTs and the OFDMs is one-to-one. It extends the carrier map configuration and is also referred to as NxSC-FDMA or NxDFT-s-OFDMA. In the present specification, these are collectively referred to as divided SC-FDMA. Referring to FIG. 11, the split SC-FDMA groups the total time domain modulation symbols into N (N is an integer greater than 1) groups in order to relax the single carrier characteristic condition, and the DFT process is performed in groups. I do.

FIG. 12 illustrates the structure of the uplink subframe that can be used in the examples of the present invention.

Referring to FIG. 12, the uplink subframe contains a plurality of (eg, two) slots. Slots can contain different numbers of SC-FDMA symbols depending on the length of the CP. For example, in the case of regular CP, the slot can contain 7 SC-FDMA symbols.

The uplink subframe is divided into a data area and a control area. The data area is an area in which PUSCH signals are transmitted and received, and is used for transmitting uplink data signals such as voice. The control area is an area in which PUCCH signals are transmitted and received, and is used for transmitting uplink control information.

The PUCCH includes RB pairs (eg, m = 0, 1, 2, 3) located at both ends of the data region on the frequency axis. Further, the PUCCH is composed of RB pairs located at opposite ends on the frequency axis (for example, RB pairs at the position of frequency reflection (frequency mirrored)), and hops at the slot as a boundary. Uplink control information (ie, UCI) includes HARQ ACK / NACK, channel quality indicator information (CQI), precoding matrix indicator (PMI), rank indicator information (RI) information, and the like.

FIG. 13 illustrates a procedure for processing UL-SCH data and control information that can be used in the examples of the present invention.

Referring to FIG. 13, the data transmitted via UL-SCH is transmitted to the coding unit in the form of a transmission block once for each transmission time interval (TTI).

Parity bits p ₀ , p ₁ , p ₂ , p ₃ , ..., p _{L to bits a 0} , a ₁ , a ₂ , a ₃ , ..., a _A-1 of the transmission block (TB) transmitted from the upper layer. _-1 is added. At this time, the size of the transmission block is A, and the number of parity bits is L = 24 bits. The input bits to which the cyclic redundancy check bit (CRC) is added can be expressed as b ₀ , b ₁ , b ₂ , b ₃ , ..., B _B-1, and B represents the number of bits of the transmission block including the CRC ( S1300).

b ₀ , b ₁ , b ₂ , b ₃ , ..., B _B-1 is segmented into a plurality of code blocks (CB) according to the TB size, and CRC is added to the divided CBs. The bits after the code block division and CRC addition are _Cr0 , _Cr1 , _Cr2 , _Cr3 , ..., _{Cr (Kr-1)} . Here, r is the code block number (r = 0, ..., C-1), and _Kr is the number of bits by the code block r. Further, C represents the total number of code blocks (S1310).

Subsequently, _C r0 is input to the channel coding _{unit, C r1, C r2, C} r3, ..., channel coding step is performed in the _{C r (Kr-1).} The bits after channel coding are d ⁽ⁱ⁾ _r0 , d ⁽ⁱ⁾ _r1 , d ⁽ⁱ⁾ _r2 , d ⁽ⁱ⁾ _r3 , ..., D ⁽ⁱ⁾ _{r (Dr-1)} . Here, i is the index of the encoded data stream (i = 0, 1, 2), D _r denotes the number of bits of the i-th encoded data stream for code block r (That is, _Dr = _Kr +4). r represents the code block number (r = 0, 1, ..., C-1), and _Kr represents the number of bits of the code block r. Further, C represents the total number of code blocks. In the embodiment of the present invention, each code block can be channel-encoded by using a turbo coding method (S1320).

A rate matching step is performed after the channel coding process. The bits after speed matching are _er0 , _er1 , _er2 , _er3 , ..., _{Er (Er-1)} . Here, _{E r} represents the r- th number of bits velocity matching code block, r = 0, 1, ..., a C-1, C represents the total number of code blocks (S1330 ).

After the speed matching process, code block concatenation is performed. The bits after the code block combination are f ₀ , f ₁ , f ₂ , f ₃ , ..., F _G-1 . Here, G represents the total number of encoded bits. However, when the control information is multiplexed and transmitted together with the UL-SCH data, the bits used for the control information transmission are not included in G. f ₀ , f ₁ , f ₂ , f ₃ , ..., F _G-1 correspond to UL-SCH codewords (S1340).

Channel quality information (CQI and / or PMI), RI and HARQ-ACK, which are uplink control information (UCI), are independently channel-coded (S1350, S1360, S1370). Channel coding for each UCI is based on the number of coded symbols for each control information. For example, the number of coded symbols is used for speed matching of the coded control information. The number of encoded symbols corresponds to the number of modulated symbols, the number of REs, etc. in the subsequent processing.

Channel coding of channel quality information (CQI) is performed using o ₀ , o ₁ , o ₂ , ..., O _O-1 input bit sequences (S1350). The output bit sequence of the channel coding for channel quality information is q ₀ , q ₁ , q ₂ , q ₃ , ..., Q _QCQI-1 . For channel quality information, different channel coding methods are applied depending on the number of bits. Further, when the channel quality information is 11 bits or more, CRC 8 bits are added. Q _CQI represents the total number of encoded bits for CQI. The encoded channel quality information can be speed matched to match the length of the bit sequence to the _QCQI. Q _CQI = _Q'CQI x Q _m , _Q'CQI is the number of encoded symbols for CQI, and Q _m is the modulation order. Q _m is set to be the same as the UL-SCH data.

The channel coding of RI is performed using the input bit sequence [o ^RI ₀ ] or [o ^RI ₀ o ^RI ₁ ] (S1360). [O ^RI ₀ ] and [o ^RI ₀ o ^RI ₁ ] mean 1-bit RI and 2-bit RI, respectively.

For 1-bit RI, repetition coding is used. In the case of 2-bit RI, the (3,2) simplex code is used for coding, and the coded data can be cyclically repeated. For RI of 3 bits or more and 11 bits or less, it is encoded using the (32, O) RM code used in the uplink shared channel, and for RI of 12 bits or more, a double RM structure is used. The RI information is divided into two groups, and each group is encoded using the (32, O) RM code. The output bit sequences q ^RI ₀ , q ^RI ₁ , q ^RI ₂ , ..., Q ^RI _PRI-1 are obtained by combining the encoded RI blocks. Here, Q _RI represents the total number of coded bits for RI. In order to match the length of the encoded _RI to the QRI, the last encoded RI block to be combined may be part (ie, velocity matching). Q _RI = _Q'RI x Q _m , _Q'RI is the number of encoded symbols for RI, and Q _m is the modulation order. Q _m is set to be the same as the UL-SCH data.

The channel coding of HARQ-ACK is performed using the input bit sequence [o ^ACK ₀ ], [o ^ACK ₀ o ^ACK ₁ ] or [o ^ACK ₀ o ^ACK ₁ ... o ^ACK _OACK-1 ] in step S1370. [O ^ACK ₀ ] and [o ^ACK ₀ o ^ACK ₁ ] mean 1-bit HARQ-ACK and 2-bit HARQ-ACK, respectively. Further, [o ^ACK ₀ o ^ACK ₁ ... o ^ACK _OACK-1 ] means HARQ-ACK composed of two or more bits of information (that is, O ^ACK > 2).

Here, ACK is encoded as 1 and NACK is encoded as 0. For 1-bit HARQ-ACK, iterative coding is used. In the case of 2-bit HARQ-ACK, the (3,2) simplex code is used, and the encoded data can be cyclically repeated. For HARQ-ACK of 3 bits or more and 11 bits or less, it is encoded using the (32, O) RM code used in the uplink shared channel, and for HARQ-ACK of 12 bits or more, two. The HARQ-ACK information is divided into two groups using the multiple RM structure, and each group is encoded using the (32, O) RM code. Q _ACK represents the total number of encoded bits for HARQ-ACK, and the bit sequences q ^ACK ₀ , q ^ACK ₁ , q ^ACK ₂ , ..., Q ^ACK _QACK-1 is the encoded HARQ-ACK block. Obtained by combining. The last encoded HARQ-ACK block to be combined to match the length of the bit sequence to Q _{ACK may be part (ie, velocity matching).} Q _ACK = _Q'ACK × Q _m , _Q'ACK is the number of encoded symbols for HARQ-ACK, and Q _m is the modulation order. Q _m is set to be the same as the UL-SCH data.

The input of the data / control information multiplexing block is a CQI / PMI bit encoded as _{f 0} , f ₁ , f ₂ , f ₃ , ..., F _{G-1, which means an encoded UL-SCH bit.} It means q ₀ , q ₁ , q ₂ , q ₃ , ..., Q _QCQI-1 (S1380). The output of the data / control information multiplexing block is g ₀ , g ₁ , g ₂ , g ₃ , ..., G _H-1 . g _i is a column vector of length _{Q m (i = 0, ...} , H'-1). here,. _{g i (i = 0, ...} , H'-1) _represents a column vector with a length of _(Q m · _{N L).} H = (G + N _L · Q _CQI ) and H'= H / (N _L · Q _m ). _NL represents the number of layers to which UL-SCH transmission blocks are mapped, and H is _{assigned to NL} transmission layers to which transmission blocks are mapped for UL-SCH data and CQI / PMI information. Represents the total number of encoded bits. Here, H is the total number of encoded bits allocated for UL-SCH data and CQI / PMI.

The channel interleaver performs channel interleaving processing on the coded bits input to the channel interleaver. Here, the input of the channel interleaver is the output of the data / control information multiplexing block g ₀ , g ₁ , g ₂ , g ₃ , ..., g _H-1 , encoded rank specifier q ^RI ₀ , q ^RI. ₁ , q ^RI ₂ , ..., q ^RI _PRI-1, and encoded HARQ-ACK q ^ACK ₀ , q ^ACK ₁ , q ^ACK ₂ , ..., q ^ACK _QACK-1 (S1390).

In S1390 step, _{g i} is the column vector of length _{Q m} for CQI / PMI, i = 0, ..., a H'-1 (H '= H / Q m). q ^ACK _{i is a column vector of length Q m} for ACK / NACK, i = 0, ..., _Q'ACK -1 ( _Q'ACK = Q _ACK / Q _m ). q ^RI _i represents a column vector of length Q _m for RI, i = 0, ..., _Q'RI -1 ( _Q'RI = _QRI / Q _m ).

The channel interleaver multiplexes control information and / or UL-SCH data for PUSCH transmission. Specifically, the channel interleaver includes a process of mapping control information and UL-SCH data to the channel interleaver matrix corresponding to the PUSCH resource.

After the channel interleaving is performed, the bit sequences h ₀ , h ₁ , h ₂ , ..., _{H H + CID-1} are output row by row from the channel interleaving matrix. The derived bit sequence is mapped on the source grid.

FIG. 14 is a diagram showing an example of a method for multiplexing uplink control information on PUSCH and UL-SCH data.

When the terminal attempts to transmit control information in a subframe to which PUSCH transmission is assigned, the terminal multiplexes the uplink control information (UCI) and UL-SCH data before DFT-spreading. Uplink control information (UCI) includes at least one of CQI / PMI, HARQ-ACK / NACK and RI.

CQI / PMI, each RE number used for transmitting the ACK / NACK and RI is, MCS and the offset value assigned to the PUSCH transmission ^{_{(Δ CQI offset, Δ HARQ-}} ACK offset, Δ RI offset) based. The offset value allows different coding rates according to the control information and is set semi-permanently by the upper layer (eg, RRC layer) signal. UL-SCH data and control information are not mapped to the same RE. The control information is mapped so that it exists in both slots of the subframe. Since the base station knows in advance that the control information is transmitted via the PUSCH, the control information and the data packet can be easily demultiplexed.

Referring to FIG. 14, the CQI and / or PMI (CQI / PMI) resources are located at the beginning of the UL-SCH data resource and are sequentially mapped to all SC-FDMA symbols on one subcarrier. ， Map is performed on the next subcarrier. CQI / PMI is mapped from left to right within the subcarrier, that is, in the direction in which the SC-FDMA symbol index increases. PUSCH data (UL-SCH data) is speed matched taking into account the amount of CQI / PMI resources (ie, the number of encoded symbols). The same modulation order as the UL-SCH data is used for CQI / PMI.

For example, when the CQI / PMI information size (payload size) is small (for example, 11 bits or less), the (32, k) block code is used for the CQI / PMI information as in the PUCCH data transmission, and the encoded data. Can be cyclically repeated. CRC is not used when the CQI / PMI information size is small.

When the CQI / PMI information size is large (eg, over 11 bits), an 8-bit CRC is added and channel coding and speed matching are performed using a tail-biting convolutional code. ACK / NACK is inserted by puncture into a part of SC-FDMA resources to which UL-SCH data is mapped. ACK / NACK is located adjacent to RS and is embedded in the corresponding SC-FDMA symbol from the lower side to the upper side, that is, in the direction in which the subcarrier index increases.

In the case of normal CP, as shown in FIG. 14, the SC-FDMA symbol for ACK / NACK is located at SC-FDMA symbols # 2 / # 4 in each slot. The encoded RI is located adjacent to the symbol for ACK / NACK (ie, at symbols # 1 / # 5) regardless of whether ACK / NACK is actually transmitted in the subframe. Here, ACK / NACK, RI and CQI / PMI are encoded independently.

FIG. 15 is a diagram showing multiplexing of control information and UL-SCH data in a MIMO (Multiple Input Multiple Output) system.

Referring to FIG. 15, the terminal identifies the rank (n_sch) for UL-SCH (data portion) and the PMI associated therewith from the schedule information for PUSCH transmission (S1510). The terminal also determines the rank (n_ctrl) for UCI (S1520). Although not limited to this, the UCI rank is set to be the same as the UL-SCH rank (n_ctrl = n_sch). After that, the data and the control channel are multiplexed (S1530). Subsequently, the channel interleaver performs a time-priority map of data / CQI, punctures around DM-RS, and maps ACK / NACK / RI (S1540). Next, the data and control channels are modulated by the MCS table (S1550). Modulation schemes include, for example, QPSK, 16QAM, 64QAM. The order / position of the modulation blocks can be changed (eg, before multiplexing the data with the control channel).

16 and 17 are diagrams showing an example of a method of multiplexing and transmitting a plurality of UL-SCH transmission blocks and uplink control information at a terminal according to an embodiment of the present invention.

For convenience, FIGS. 16 and 17 assume that two codewords are transmitted, but FIGS. 16 and 17 are also applicable when transmitting one or three or more codewords. Codewords and transmission blocks correspond to each other and are mixed herein. Since the basic processing is similar / same as that described with reference to FIGS. 13 and 14, the description here will focus on the part related to MIMO.

Taking the case where two codewords are transmitted in FIG. 16, channel coding is performed for each codeword (160). In addition, speed matching is performed based on the given MCS level and resource size (161). The encoded bits can be scrambled in a cell-specific, user-device-specific, or codeword-specific manner (162). Then a codeword vs. hierarchical map is performed (163). Hierarchical shifts or permutations may be included in this process.

The codeword-to-hierarchical map performed in the functional block 163 can be performed by using the codeword-to-hierarchical map method shown in FIG. The precoding position performed in FIG. 17 may differ from the precoding position in FIG.

Also, referring to FIG. 16, control information such as CQI, RI and ACK / NACK is channel coded into the channel coding block (165) according to the given specifications. Here, CQI, RI and ACK / NACK may be encoded using the same channel code for all code words, or may be encoded using different channel codes for each code word.

After that, the number of encoded bits can be changed by the bit size control unit 166. The bit size control unit 166 may be integrated with the channel coding block 165. The signal output from the bit size control unit is scrambled (167). Here, scrambling can be performed for cell identification, hierarchy identification, codeword identification, or user device identification.

The bit size control unit 166 can operate as follows.

(1) The bit size control unit recognizes the rank (n_rank_push) of data with respect to PUSCH.

(2) The rank of the control channel (n_rank_control) is set to be the same as the rank of the data (that is, n_rank_control = n_rank_push), and the number of bits for the control channel (n_bit_ctrl) is the number of bits multiplied by the rank of the control channel. Is extended.

One way to do this is to simply copy and iterate the control channel. In this case, the control channel may be at the information level before channel coding or at the coded bit level after channel coding. For example, in the case of the control channel [a0, a1, a2, a3] of n_bit_ctrl = 4 and n_rank_push = 2, the extended number of bits (n_ext_ctrl) is [a0, a1, a2, a3, a0, a1, a2. , A3], which can be 8 bits.

As another method, a circular buffer method can be applied so that the number of bits (n_ext_ctrl) that can be expanded as described above becomes 8 bits.

When the bit size control unit 166 and the channel coding unit 165 are integrally configured, the encoded bits apply the channel coding and speed matching defined in the existing system (for example, LTE Rel-8). May be generated.

In addition to the bit size control unit 166, bit-level interleaving may be performed in order to further randomize each layer. Alternatively, interleaving may be performed evenly at the modulation symbol level.

The control information (or control data) about the CQI / PMI channel and the two codewords can be multiplexed by the data / control information multiplexing device (multiplexer) 164. After that, the channel interleaver 168 sets the CQI / PMI by the time priority map method while making the ACK / NACK information mapped to the RE around the uplink DM-RS in each of the two slots in one subframe. Map.

After that, the modulation mapper 169 modulates each layer, the DFT precoder 170 performs DFT precoding, the MIMO precoder 171 performs MIMO precoding, and the resource element mapper 172 sequentially performs RE mapping. After that, the SC-FDMA signal generator 173 generates an SC-FDMA signal, and the generated control signal is transmitted from the antenna port.

The above-mentioned functional block is not limited to the position shown in FIG. 16, and the position can be changed in some cases. For example, the scramble blocks 162 and 167 may be located next to the channel interleaved blocks. Further, the codeword pair hierarchy map block 163 may be located next to the channel interleaved block 168 or next to the modulation mapper block 169.

2. 2. Multi-Carrier Aggregation Environment The communication environment considered in the examples of the present invention includes all multi-carrier provision environments. That is, the multi-carrier system or carrier-aggregated system used in the present invention is one or more component carriers (CC) having a bandwidth smaller than the target band when the target wide band is configured in order to provide a wide band. ) Are aggregated or aggregated and used.

In the present invention, multicarrier means carrier aggregation (or carrier coupling), where carrier aggregation means not only coupling between adjacent carriers but also coupling between non-adjacent carriers. .. Carrier coupling can also be mixed with terms such as carrier aggregation, bandwidth coupling, and so on.

Multicarriers (ie, carrier aggregation) constructed by combining two or more component carriers are aimed at providing up to 100 MHz bandwidth in LTE-A systems. When combining one or more carriers with a bandwidth smaller than the target bandwidth, the bandwidth of the combined carriers is limited to the bandwidth used in the existing system in order to maintain backward compatibility with the existing IMT system. Sometimes.

For example, the existing 3GPP LTE system provides {1,4,3,5,10,15,20} MHz bandwidth, and the 3GPP advanced LTE system (ie LTE-A) provides LTE. It is intended to provide bandwidth greater than 20 MHz using only the bandwidth of. In addition, the multi-carrier system used in the present invention may define a new bandwidth to provide carrier coupling (ie, carrier aggregation, etc.) regardless of the bandwidth used in the existing system.

The LTE-A system uses the concept of cells to manage radio resources. A cell is defined as a combination of a downlink resource and an uplink resource, and the uplink resource is not a required element. Therefore, the cell can be composed of the downlink resource alone or both the downlink resource and the uplink resource. When multiple carriers (ie, carrier coupling, or carrier aggregation) are provided, the linkage between the carrier frequency (or DLCC) of the downlink resource and the carrier frequency (or ULCC) of the uplink resource is It can be instructed by system information (SIB).

The cells used in the LTE-A system include primary cells (PCell: Primary Cell) and secondary cells (SCell: Secondary Cell). The P cell means a cell operating on the primary frequency (for example, PCC), and the S cell means a cell operating on the secondary frequency (for example, SCC). However, only one P cell is assigned to a specific terminal, and one or more S cells are assigned.

The P cell is used when the terminal executes the initial connection establishment procedure or connection reestablishment procedure. The P cell may refer to the cell specified in the handover process. The S cell can be configured after the RRC connection is established and is used to provide additional radio resources.

The P cell and the S cell can be used as a service providing cell. In the case of a terminal that is in the RRC_CONNECTED state but has no carrier wave coupling set or does not provide carrier wave coupling, there is only one service providing cell composed of only P cells. On the other hand, in the case of a terminal in the RRC_CONNECTED state and the carrier wave coupling is set, one or more service providing cells can exist, and the entire service providing cell includes a P cell and one or more S cells.

After the initial security activation process has started, the E-UTRAN can configure a network containing one or more S cells in addition to the P cells initially configured in the connection establishment process. In a multi-carrier environment, cells P and S can operate as their respective component carriers. That is, multicarrier aggregation can be defined as a combination of P cells and one or more S cells. In the following examples, the primary component carrier wave (PCC) can be used with the same meaning as the P cell, and the secondary component carrier wave (SCC) can be used with the same meaning as the S cell.

3. 3. Uplink Control Information Transmission Method The embodiments of the present invention relate to a channel coding method for UCI, a resource allocation method for UCI, and a UCI transmission method when UCI is piggybacked to data on PUSCH in a carrier-aggregated environment. is there. The embodiments of the present invention can basically be applied to a SU-MIMO environment, and can also be applied to a single antenna transmission environment as a special case of SU-MIMO.

3.1 UCI allocation position on PUSCH FIG. 18 is a diagram showing an example of a method of mapping physical resource elements in order to transmit uplink data and uplink control information (UCI).

FIG. 18 shows a method of transmitting UCI in the case of two codewords and four layers. In this case, the CQI is mapped to the remaining REs, except for the REs that are combined with the data and whose RIs are mapped by the time-priority mapping scheme, using the same modulation order as the data and all constellation points. In SU-MIMO, CQI is diffused and transmitted by one codeword. For example, the CQI is transmitted by the codeword having the higher MCS level among the two codewords, and is transmitted by the codeword 0 when the MCS levels are the same.

In addition, ACK / NACK is arranged while puncturing the combination of CQI and data already mapped to the symbols located on both sides of the reference signal. Since the reference signal is located at the 3rd and 10th symbols, it is mapped upward starting from the lowest subcarrier in the 2nd, 4th, 9th and 11th symbols. At this time, the ACK / NACK symbols are mapped in the order of 2, 11, 9, and 4 symbols.

The RI is mapped to the symbol adjacent to the ACK / NACK and is mapped before any of all the information (data, CQI, ACK / NACK, RI) transmitted to the PUSCH. Specifically, the RI is mapped upwards starting from the lowest subcarrier of the 1, 5, 8 and 12th symbols. At this time, the RI symbols are mapped in the order of the 1, 12, 8, and 5th symbols.

In particular, ACK / NACK and RI are mapped in a QPSK-like manner using only the four corners of the constellation when the size of the information bit is 1 bit or 2 bits, and for information bits of 3 bits or more. Alternatively, it may be mapped using all constellations of the same modulation order as the data. In addition, ACK / NACK and RI transmit the same information using the same resource at the same position in all layers.

3.2 Calculation of the number of encoded modulation symbols for HARQ-ACK bits or RI-1
In the embodiment of the present invention, the number of modulated symbols can be used in the same meaning as the number of encoded symbols or the number of REs.

The control information or control data is input to the channel coding block (eg, S1350, S1360, S1370 or 165 in FIG. 13) in the form of channel quality information (CQI and / or PMI), HARQ-ACK and RI. Will be done. By assigning different numbers of coded symbols for the transmission of control information, different coding rates are applied according to the control information. _{When the control information is transmitted on the PUSCH, the control information bits o 0} , o ₁ , o ₂ , ..., o _o regarding the uplink channel state information (CSI) HARQ-ACK, RI and CQI (or PMI). _{Channel coding for -1} is done independently.

式１において，ＡＣＫ／ＮＡＣＫ（又はＲＩ）のためのリソース要素の個数は，符号化された変調シンボルの個数（Ｑ’）と表現することができる。ここで，Ｏは，ＡＣＫ／ＮＡＣＫ（又はＲＩ）のビット数を表し，β^{ＨＡＲＱ‐ＡＣＫ} _{ｏｆｆｓｅｔ}，β^ＲＩ _{ｏｆｆｓｅｔ}はそれぞれ，伝送ブロックに応じた送信符号語の個数によって決定される。ここで，データとＵＣＩとのＳＮＲ差を考慮するためのオフセット値を設定するためのパラメータはそれぞれ，β^{ＰＵＳＣＨ} _{ｏｆｆｓｅｔ}＝β^{ＨＡＲＱ‐ＡＣＫ} _{ｏｆｆｓｅｔ}，β^{ＰＵＳＣＨ} _{ｏｆｆｓｅｔ}＝β^ＲＩ _{ｏｆｆｓｅｔ}と定められる。 When the terminal transmits the ACK / NACK (or RI) information bit on the PUSCH, the number of resource elements for ACK / NACK (or RI) per layer can be calculated by the following equation 1.
(Equation 1)

In Equation 1, the number of resource elements for ACK / NACK (or RI) can be expressed as the number of encoded modulation symbols (Q'). Here, O represents the number of bits of ACK / NACK (or RI), and β ^HARQ-ACK _offset and β ^RI _offset are each determined by the number of transmission codewords according to the transmission block. Here, the parameters for setting the offset value for considering the SNR difference between the data and the UCI are defined as β ^PUSCH _offset = β ^HARQ-ACK _offset and β ^PUSCH _offset = β ^RI _offset , respectively.

ここで，Ｎ_ＳＲＳは，端末が，初期送信のための同一サブフレーム内でＰＵＳＣＨ及びＳＲＳを送信する場合，又は初期送信のためのＰＵＳＣＨリソース割当がセル特定ＳＲＳのサブフレーム及び周波数帯域幅と部分的に重なる場合に，１に設定され，それ以外の場合は，０に設定される。 The M ^PUSCH _SC represents the (scheduled) bandwidth allocated for PUSCH transmission within the current subframe for a transmission block by the number of subcarriers. N ^{PUSCH-initial} _symb represents the number of SC-FDMA symbols per initial PUSCH transmission subframe for the same transmission block as above, and M ^{PUSCH-initial} _SC represents the number of subframes per subframe for initial PUSCH transmission. Represents the number of carrier waves. The N ^{PUSCH-initial} _symb can be calculated by the following equation 2.
(Equation 2)

Here, in _NSRS , when the terminal transmits PUSCH and SRS within the same subframe for initial transmission, or the PUSCH resource allocation for initial transmission is the subframe and frequency bandwidth and part of the cell-specific SRS. If they overlap, it is set to 1, otherwise it is set to 0.

The number of subcarriers of the transmission block for initial transmission (M ^{PUSCH-initial} _SC ), the total number of code blocks derived from the transmission block (C), and the size of each code block (K ^(x) _r , x = {0,1}) can be obtained from the initial PDCCH for the same transmission block.

If these values are not included in the initial PDCCH (DCI format 0 or 4), the values may be determined by other methods. For example, M ^{PUSCH-initial} _SC , C and (K ^(x) _r , x = {0,1}) are the most recent when the initial PUSCH for the same transmission block is scheduled semi-permanently. Determined from the semi-permanent schedule allocation PDCCH. Alternatively, when the PUSCH is initialized by the random access response permission (grant), it may be determined from the random access response permission for the same transmission block.

As described above, when the number of resource elements for ACK / NACK (or RI) is obtained, the number of bits after channel coding of ACK / NACK (or RI) can be obtained in consideration of the modulation method. The total number of ACK / NACK encoded bits is Q _ACK = Q _m · Q', and the total number of _{RI encoded bits is QR I} = Q _m · Q'. Here, Qm is the number of bits per symbol according to the modulation order, which is 2 for QPSK, 4 for 16QAM, and 6 for 64QAM.

On the other hand, when the SNR or the spectral efficiency is high, the velocity matching acts as a puncture to prevent the minimum distance of the codeword encoded by the RM code from becoming 0, ACK / NACK. And the minimum value of the resource element assigned to RI can be set. At this time, the minimum value of the defined resource element can have different values depending on the information bit size of ACK / NACK or RI.

3.3 Calculation of the number of encoded modulation symbols for CQI and / or PMI-1
When the terminal transmits the channel quality control information (CQI or PMI) bit on the PUSCH, the number of resource elements for CQI or PMI per layer can be calculated by Equation 3 below.
(Equation 3)

In Equation 3, the number of resource elements for CQI or PMI can be expressed as the number of encoded modulation symbols (Q'). In the following, CQI will be mainly described, but it can be applied to PMI in the same way.

のようになる。 In Equation 3, O represents the number of bits of CQI. L represents the number of CRC bits added to the CQI bits. Here, L has a value of 0 when O is 11 bits or less, and has a value of 8 in other cases. That is,

become that way.

The β ^CQI _offset is determined by the number of codewords transmitted by the transmission block, and the parameter for determining the offset value for considering the SNR difference between the data and the UCI is defined as ^{β PUSCH} _offset = β ^CQI _offset.

The M ^PUSCH _SC represents the (scheduled) bandwidth allocated for PUSCH transmission within the current subframe for a transmission block, in terms of the number of subcarriers. N ^PUSCH _symb represents the number of SC-FDMA symbols in a subframe current PUSCH is transmitted, it can be determined by the equation 2 described above.

N ^{PUSCH-initial} _symb represents the number of SC-FDMA symbols per initial PUSCH transmission subframe for the same transmission block, and M ^{PUSCH-initial} _SC represents the number of subcarriers for the relevant subframe. In K ^(x) _r , x represents the index of the transmission block with the highest MCS specified by the uplink permission.

Here, M ^{PUSCH-initial} _SC , C and K ^(x) _r can be obtained from the initial PDCCH for the same transmission block. If the M ^{PUSCH-initial} _SC , C and K ^(x) _r values are not included in the initial PDCCH (DCI format 0), the terminal may determine the corresponding values in other ways.

For example, when the initial PUSCH for the same transmission block as at the time of initial transmission is semi-persistently scheduled, the M ^{PUSCH-initial} _SC , C and K ^(x) _r values are determined from the most recent semi-persistent schedule allocation PDCCH. Will be done. Alternatively, when the PUSCH is initialized by the random access response permission, the M ^{PUSCH-initial} _SC , C and K ^(x) _r values may be determined from the random access response permission for the same transmission block.

The UL-SCH data information (G) bit can be calculated by the following equation 4.
(Equation 4)

As described above, when the number of resource elements for CQI is obtained, the number of bits after channel coding of CQI can be obtained in consideration of the modulation method. Q _CQI represents the total number of encoded bits of _CQI , and Q CQI = Q _m · Q'. Here, Q _m is the number of bits per symbol according to the modulation order, which is 2 for QPSK, 4 for 16QAM, and 6 for 64QAM. Since the resources for RI are preferentially allocated, the number of resource elements allocated to RI is excluded. When RI is not transmitted, _QRI = 0.

3.4 Calculation of the number of encoded modulation symbols for HARQ-ACK bits or RI-2
Hereinafter, a method for obtaining the number of resource elements (RE) used for ACK / NACK and RI, which is different from the method described in 3.1 above, will be described.

If the terminal transmits a HARQ-ACK bit or RI bit in a single cell, the terminal must determine the number of encoded modulation symbols Q'per hierarchy for the HARQ-ACK or RI. Equation 5 below is used to determine the number of modulation symbols when only one transmission block is transmitted in the UL cell.
(Equation 5)

In Equation 5, the number of resource elements for ACK / NACK (or RI) can be expressed as the number of encoded modulation symbols (Q'). Here, O represents the number of bits of ACK / NACK (or RI).

β ^HARQ-ACK _offset and β ^RI _offset are each determined by the number of codewords transmitted by the transmission block. Here, the parameters for setting the offset value for considering the SNR difference between the data and the UCI are defined as β ^PUSCH _offset = β ^HARQ-ACK _offset and β ^PUSCH _offset = β ^RI _offset , respectively.

The M ^PUSCH _SC represents the (scheduled) bandwidth allocated for PUSCH transmission within the current subframe for a transmission block, in terms of the number of subcarriers. N ^{PUSCH-initial} _symb represents the number of SC-FDMA symbols per initial PUSCH transmission subframe for the same transmission block, and M ^{PUSCH-initial} _SC is the subcarrier per subframe for initial PUSCH transmission. Represents the number. The N ^{PUSCH-initial} _symb can be calculated by the above equation 2.

The number of subcarriers of the transmission block for initial transmission (M ^{PUSCH-initial} _SC ), the total number of code blocks derived from the transmission block (C), and the size of each code block (K ^(x) _r , x = { 0,1}) can be obtained from the initial PDCCH for the same transmission block.

If the initial PDCCH (DCI format 0 or 4) does not include these values, the values can be determined by other means. For example, M ^{PUSCH-initial} _SC , C and K ^(x) _r , x = {0,1} are the most recent semi-persistent schedule allocations when the initial PUSCH for the same transmission block is semi-persistently scheduled. Determined from PDCCH. Alternatively, when the PUSCH is initialized by the random access response permission, it may be determined from the random access response permission for the same transmission block.

（式７）

If the terminal intends to transmit two transmission blocks in the UL cell, the terminal must determine the number Q'encoded modulation symbols per layer for HARQ-ACK or RI. Equations 6 and 7 below are used to obtain the number of modulation symbols when the initial transmission resource values of the two transmission blocks are different in the UL cell.
(Equation 6)

(Equation 7)

であれば，Ｑ’_ｍｉｎ＝０であり，そうでないときは，Ｑ’_ｍｉｎ＝（Ｑ^１ _ｍ，Ｑ^２ _ｍ）である。Ｑ^ｘ _ｍ，ｘ＝｛１，２｝は，伝送ブロック‘ｘ’の変調次数を表し，Ｍ^{ＰＵＳＣＨ‐ｉｎｉｔｉａｌ（ｘ）} _ＳＣ，ｘ＝｛１，２｝は，第１伝送ブロック及び第２伝送ブロックのための初期サブフレームにおいてＰＵＳＣＨ送信のために副搬送波の個数で表現されるスケジュールされた帯域幅を表す。 In equations 6 and 7, the number of resource elements for ACK / NACK (or RI) can be expressed as the number of encoded modulation symbols (Q'). Here, O represents the number of bits of ACK / NACK (or RI). Here, O ≦ 2 and

If so, _Q'min = 0, and if not, _Q'min = (Q ¹ _m , Q ² _m ). Q ^x _m , x = {1, 2} represents the modulation order of the transmission block'x', M ^{PUSCH-initial (x)} _SC , x = {1, 2,} represents the first transmission block and the second transmission. Represents the scheduled bandwidth expressed by the number of subcarriers for PUSCH transmission in the initial subframe for the block.

式８において，端末が伝送ブロック‘ｘ’に対する初期送信のために同一のサブフレームでＰＵＳＣＨ及びＳＲＳを送信する場合，又は伝送ブロック‘ｘ’の初期送信のためのＰＵＳＣＨリソース割当がセル特定ＲＳＲサブフレーム及び帯域幅構成と部分的に重なる場合に，Ｎ^（ｘ） _ＳＲＳ，ｘ＝｛１，２｝は１であり，そうでないときは，Ｎ^（ｘ） _ＳＲＳ，ｘ＝｛１，２｝は０である。 Further, N ^{PUSCH-initial (x)} _symb , x = {1,2} represents the number of SC-FDMA symbols per subframe for initial PUSCH transmission to the first transmission block and the second transmission block. The N ^{PUSCH-initial (x)} _symb can be calculated from the following equation 8.
(Equation 8)

In Equation 8, when the terminal transmits PUSCH and SRS in the same subframe for the initial transmission to the transmission block'x', or the PUSCH resource allocation for the initial transmission of the transmission block'x' is the cell-specific RSR sub. ^{N (x)} _SRS , x = {1,2} is 1 if it partially overlaps the frame and bandwidth configuration ^{, otherwise N (x)} _SRS , x = {1,2} is It is 0.

In the embodiment of the present invention, the terminal sets the ^{MPUSCH-initial (x)} _SC , x = {1,2}, C and K ^(x) _r , x = {1,2} values of the corresponding transmission block. Can be obtained from the initial PDCCH for.

If the initial PDCCH (DCI format 0 or 4) does not include these values, the values can be determined by other methods. For example, the M ^{PUSCH-initial (x)} _SC , x = {1,2}, C and K ^(x) _r , x = {1,2} values have a semi-persistent schedule for the initial PUSCH for the same transmission block. When it is done, it is determined from the most recent semi-persistent schedule allocation PDCCH. Alternatively, when the PUSCH is initialized by random access response permission, the M ^{PUSCH-initial (x)} _SC , x = {1,2}, C and K ^(x) _r , x = {1,2} values are ， May be determined from the random access response permission for the same transmission block.

In equations 6 and 7, β ^HARQ-ACK _offset and β ^RI _offset are determined by the number of codewords transmitted by the transmission block, respectively. Here, the parameters for setting the offset value for considering the SNR difference between the data and the UCI are defined as β ^PUSCH _offset = β ^HARQ-ACK _offset and β ^PUSCH _offset = β ^RI _offset , respectively.

3.5 Calculation of the number of encoded modulation symbols for CQI and / or PMI-2
When the terminal transmits channel quality control information (CQI and / or PMI) bits on the PUSCH, the terminal must calculate the number of resource elements for CQI and / or PMI per hierarchy. In the following, the channel quality control information will be mainly described for CQI, but this description can be applied to PMI as well.

FIG. 19 is a diagram showing an example of a method of transmitting uplink control information according to an embodiment of the present invention.

Referring to FIG. 19, the base station (eNB) can transmit an initial PDCCH signal including DCI format 0 or DCI format 4 to the terminal (S1910).

At the stage S1910, the initial PDCCH contains ^{information on the number of subcarriers (MPUSCH-initial (x)} _SC ), information on the number of code blocks (C ^(x) ), and information on the size of the code blocks (K ^(x) _r). ) May be included.

In step S1910, if the (M ^{PUSCH-initial (x)} _SC , C ^(x) and K ^(x) _r values are not included in the initial PDCCH (DCI format 0/4), the terminal is otherwise applicable. The value of may be determined.

For example, when the initial PUSCH for the same transmission block as at the time of initial transmission is semi-persistently scheduled, from the most recent semi-persistent schedule allocation PDCCH, M ^{PUSCH-initial (x)} _SC , C ^(x) and K ^{( x) The} _r value is determined. Alternatively, when the PUSCH is started by the random access response permission, the M ^{PUSCH-initial (x)} _SC , C ^(x) and K ^(x) _r values are determined from the random access response permission for the same transmission block. You may.

With reference to FIG. 19 again, the terminal (UE) can calculate the resource element for transmitting the uplink control information by using the information received in the S1910 step. In particular, in FIG. 19, the terminal can calculate the number of resource elements (RE) required to transmit the channel quality control information (CQI / PMI) among the UCI information (S1920).

In the embodiment of the present invention, in the case of CQI / PMI, it is transmitted by being diffused or multiplexed in a layer belonging to TB having a high MCS. When the MCS levels of the two transmission blocks (TB) are the same, the CQI shall be transmitted in the first TB.

式９は，式３と類似の方式で計算される。ただし，式３は，ＵＬデータ及び／又はＵＣＩなどを再送信する場合に，再送信パケットが送信されるＴＢの初期ＲＢサイズが異なる場合には用いることができない。すなわち，式９は，多搬送波集約環境で一つ以上のＴＢを用いてＰＵＳＣＨを送信する場合に適用することができる。 However, since the size of the initial resource block (RB) set between the two TBs may differ due to retransmission etc., the number of REs Q'for CQI transmitted via PUSCH at the S1920 stage is , Can be calculated as in Equation 9 below.
(Equation 9)

Equation 9 is calculated in a manner similar to Equation 3. However, Equation 3 cannot be used when UL data and / or UCI or the like is retransmitted and the initial RB size of the TB to which the retransmitted packet is transmitted is different. That is, Equation 9 can be applied when the PUSCH is transmitted using one or more TBs in a multicarrier aggregation environment.

In Equation 9, the number of resource elements for CQI or PMI can be expressed by the number of encoded modulation symbols (Q'). In the following, CQI will be mainly described, but it can be applied to PMI in the same way. Further, in the equation 9, ‘x’ represents an index of the transmission block (TB).

となる。 In Equation 9, O represents the number of bits of CQI. L represents the number of CRC bits added to the CQI bits. Here, L has a 0 value when O is 11 bits or less, and has an 8 value in other cases. That is,

Will be.

Here, the β ^CQI _offset is determined by the number of codewords transmitted by the transmission block, and the parameter for determining the offset value for considering the SNR difference between the data and the UCI is β ^PUSCH _offset = β ^CQI _offset . It is decided.

M ^{PUSCH-initial (x)} _SC represents the number of subcarriers for the relevant subframe, C ^(x) represents the total number of code blocks generated from the transmission block, and K ^(x) _r represents the index. Represents the size of the code block by r. In K ^(x) _r , x represents the index of the transmission block with the highest MCS specified by the uplink permission.

Here, the terminal ^{can acquire the MPUSCH-initial (x)} _SC , C ^(x) and K ^(x) _r values from the initial PDCCH in the S1910 step.

N ^{PUSCH-initial} _{(x) symb} represents the initial PUSCH number of SC-FDMA symbols per transmission sub-frame for the same transmission block. _{^{Here, N PUSCH-initial (x)}} symb denotes the number of SC-FDMA symbols per subframe for the initial PUSCH transmission for the first transmission block and a second transport block.

式１０において，Ｎ^（ｘ） _ＳＲＳは，端末が伝送ブロック‘ｘ’の初期送信のための同一サブフレーム内でＰＵＳＣＨ及びＳＲＳを送信する場合，又は伝送ブロック‘ｘ’の初期送信のためのＰＵＳＣＨリソース割当がセル特定ＳＲＳのサブフレーム及び周波数帯域幅と部分的に重なる場合には，１に設定され，それ以外の場合は，０に設定される。 In addition, the terminal ^{can calculate the N PUSCH-initial (x)} _symb value using the following equation 10.
(Equation 10)

In Equation 10, the N ^(x) _SRS is the PUSCH when the terminal transmits PUSCH and SRS within the same subframe for the initial transmission of the transmission block'x', or the PUSCH for the initial transmission of the transmission block'x'. If the resource allocation partially overlaps the subframe and frequency bandwidth of the cell-specific SRS, it is set to 1, otherwise it is set to 0.

In Equation 9, the M ^PUSCH _SC represents the (scheduled) bandwidth allocated for PUSCH transmission within the current subframe for the transmission block, in terms of the number of subcarriers. N ^PUSCH _symb represents the number of SC-FDMA symbols in the subframe to which the current PUSCH is transmitted.

In Equation 9, the variable'x' represents the transmission block (TB) corresponding to the highest MCS level indicated by the initial UL permission. If the two transmission blocks have the same MCS level in the corresponding initial UL authorization, x can be set to '1', which represents the first transmission block.

Referring again to FIG. 19, the terminal can generate uplink control information (UCI, CSI, etc.) including CQI using the number of REs calculated in step S1920. At this time, UCI information other than CQI can be calculated using equations 1, 2, and 5 to 8 (S1930).

The terminal can also calculate the information (G) of the uplink data (UL-SCH signal) transmitted via the PUSCH. That is, the terminal can calculate the information regarding the uplink data to be transmitted together with the uplink control information calculated in the S1930 step. After that, the terminal can transmit a PUSCH signal including UCI and UL data to the base station (S1940).

At the S1940 step, the UL-SCH data information (G) bit can be calculated by the following equation 11.
(Equation 11)

When the terminal obtains the number of resource elements for CQI (see Equation 9), the terminal can obtain the number of bits after channel coding of CQI in consideration of the modulation method for CQI. In Equation 11, N ^(x) _L represents the number of layers corresponding to the xth UL-SCH transmission block. Further, Q _CQI represents the total number of encoded bits of _CQI , and Q CQI = Q ^(x) _m · Q'. Here, Q ^(x) _m is the number of bits per symbol according to the modulation order in each transmission block. In the case of QPSK, it is 2,16QAM, and in the case of 64QAM, it is 6. In addition, since the uplink resource preferentially allocates the resource for RI, the number of resource elements allocated to RI is excluded from the uplink data information (G) bits. When RI is not transmitted, Q ^(x) _RI = 0.

In FIG. 19, the number of REs allocated to the CQI is determined using the parameters obtained by the initial transmission of the TB (or CW) to which the CQI is transmitted, and the maximum value of the REs allocated is M, which is currently the total resource of the subframe. from PUSCH SC · N PUSCH symb, modulation order Q (x) m of TB (or CW) the number of bits Q (x) RI the RI defined in TB (or CW) transmitted in CQI transmitted the CQI The value is obtained by excluding the value divided by (see Equation 9).

FIG. 20 is a diagram showing an embodiment of the present invention and another example of a method of transmitting uplink control information.

Referring to FIG. 20, the base station (eNB) transmits a PDCCH to allocate downlink and uplink resources to the terminal (S2010).

The terminal (UE) transmits uplink data and / or uplink control information (that is, CQI) to the base station via PUSCH based on the control information included in the PDCCH (S2020).

At this time, if an error occurs in the PUSCH signal transmitted in the S2020 stage, the base station transmits the NACK signal to the terminal (S2030).

When the terminal receiving the NACK signal retransmits the uplink data, the terminal for transmitting the uplink data and the resource for transmitting the uplink control information can be calculated from the radio resources assigned to the terminal. .. Therefore, the terminal can calculate the number of REs for transmitting UCI (S2040).

At the S2040 stage, the CQI is spread and transmitted to all layers belonging to the high transmission block (TB) of the MCS. In this case, if the MCS levels of the two TBs are the same, the CQI is preferably transmitted in the first TB. However, in the S2040 stage, the PUSCH signal must be retransmitted, and the size of the initial resource block (RB) set in each TB may be different. Therefore, it is preferable that the terminal obtains the number of REs for CQI by the method described in Equation 9.

Further, when the MPUSCH ^{-initial (x)} _SC , C ^(x) and K ^(x) _r values are included in the PDCCH signal in the S2010 stage, the terminal uses the corresponding information to RE for the CQI in the S2040 stage. The number of can be obtained. ^{When receiving a PDCCH containing the MPUSCH-initial (x)} _SC , C ^(x) and K ^(x) _r values after the S2030 step, the terminal uses the corresponding values to determine the number of REs for the CQI. You can ask.

Referring to FIG. 20, the terminal can generate uplink control information (UCI) by using the number of REs with respect to the CQI obtained in the S2040 step. At this time, the terminal can determine the number of REs for HARQ-ACK and / or RI by the method disclosed in Equations 6 and 7, and can use this to generate UCI (S2050).

In addition, the terminal can calculate the UL-SCH data information G for the uplink data to be retransmitted. UL-SCH data information G can be calculated using Equation 10. Therefore, when the uplink data is retransmitted, the uplink control information (UCI) can be multiplexed (or piggybacked) with the uplink data and transmitted to the base station (S2060).

3.6 Channel Coding The following describes a method of channel coding for UCI based on the number of REs for each UCI value calculated using the method described above.

When the information bit of ACK / NACK is 1 bit, the input sequence ^{can be expressed as [o ACK} ₀ ], and as shown in Table 1 below, channel coding can be performed according to the modulation order. is there. Q _m is the number of bits per symbol according to the modulation order, and has 2, 4 and 6 values when QPSK, 16QAM and 64QAM are applied, respectively.

When the information bit of ACK / NACK is 2 bits, it ^{can be expressed as [o ACK} ₀ o ^ACK ₁ ], and channel coding can be performed according to the modulation order as shown in Table 2 below. Here, o ^ACK ₀ is an ACK / NACK bit for the codeword 0, o ^ACK ₁ is an ACK / NACK bit for the codeword 1, and o ^ACK ₂ = (o ^ACK ₀ + o ^ACK _1). ) Mod2. In Tables 1 and 2, x and y mean placeholders for scrambling the ACK / NACK information to maximize the Euclidean distance of the modulated symbols that carry the ACK / NACK information.

も，複数の符号化されたＡＣＫ／ＮＡＣＫブロックの結合によって生成される。ここで，Ｑ_ＡＣＫは，すべての符号化されたＡＣＫ／ＮＡＣＫブロックに対する符号化されたビットの総個数である。符号化されたＡＣＫ／ＮＡＣＫブロックの最後の結合は，総ビットシーケンスの長さがＱ_ＡＣＫと同一になるように部分的に構成してもよい。 In the case of ACK / NACK multiplexing in frequency division double communication (FDD) or time division double communication (TDD), if ACK / NACK is 1 bit or 2 bits, the bit sequences q ^ACK ₀ , q ^ACK ₁ , q ^ACK ₂ , ..., Q ^ACK _QACK-1 is generated by combining a plurality of encoded ACK / NACK blocks. Also, in the case of ACK / NACK bundling in TDD, the bit sequence

Is also generated by combining multiple encoded ACK / NACK blocks. Here, Q _ACK is the total number of encoded bits for all encoded ACK / NACK blocks. The final join of the encoded ACK / NACK blocks may be partially configured so that _{the total bit sequence length is the same as the Q ACK.}

は，下記の表３から選択でき，スクランブルシーケンスを選択するためのインデクスｉは，下記の式１２から計算できる。
（式１２）

Scramble sequence

Can be selected from Table 3 below, and the index i for selecting the scramble sequence can be calculated from Equation 12 below.
(Equation 12)

表３は，ＴＤＤ ＡＣＫ／ＮＡＣＫバンドリングのためのスクランブルシーケンス選択テーブルである。

Table 3 is a scramble sequence selection table for TDD ACK / NACK bundling.

When ACK / NACK is 1 bit, m = 1 is set, and when ACK / NACK is 2 bits, m = 3 is set, so that the bit sequences q ^ACK ₀ , q ^ACK ₁ , q ^ACK ₂ , ..., Q ^ACK _QACK-1 is generated. At this time, ^{the algorithms for generating the bit sequences q ACK} ₀ , q ^ACK ₁ , q ^ACK ₂ , ..., Q ^ACK _QACK-1 are as shown in Table 4 below.

式１３において，ｉ＝０，１，２，…，Ｑ_ＡＣＫ−１であり，基本シーケンスＭ_ｉ，ｎは，３ＧＰＰ ＴＳ ３６．２１２規格文書の表５.２.２.６.４−１.を参照されたい。ＨＡＲＱ−ＡＣＫ情報に対するチャネル符号化のベクトルシーケンス出力は，ｑ ^ＡＣＫ _０，ｑ ^ＡＣＫ _１，…，ｑ ^ＡＣＫ _{ＱＡＣＫ−１}と定義できる。このとき，Ｑ’_ＡＣＫ＝Ｑ_ＡＣＫ／Ｑ_ｍとなる。 When the HARQ-ACK information bit is 2 or more bits (that is, [o ^ACK ₀ o ^ACK ₁ ... o ^ACK _oACK-1 ] and o ^ACK > 2), the bit sequence q ^ACK ₀ , q ^ACK ₁ , q ^ACK ₂ , ..., Q ^ACK _QACK-1 can be obtained from the following equation 13.
(Equation 13)

In Equation 13, i = 0, 1, 2, ..., Q _ACK -1, and the basic sequences Mi _{, n} are shown in Table 5.2.2.6.4-1 of the 3GPP TS 36.212 standard document. Please refer to. The vector sequence output of the channel coding for the HARQ-ACK information can be defined as q ^ACK ₀ , q ^ACK ₁ , ..., Q ^ACK _QACK-1. At this time, _Q'ACK = Q _ACK / Q _m .

Here, the algorithms for generating the bit sequences q ^ACK ₀ , q ^ACK ₁ , ..., Q ^ACK _QACK-1 are shown in Table 5 below.

When the information bit of RI is 1 bit, the input sequence ^{can be expressed as [o RI} ₀ ], and channel coding according to the modulation order can be performed as shown in Table 6 below.

Q _m is the number of bits according to the modulation order, and has 2, 4 and 6 values for QPSK, 16QAM and 64QAM, respectively. The map relationship between [o ^RI ₀ ] and RI is shown in Table 7 below.

When the information bit of RI is 2 bits, the input sequence ^{can be expressed as [o RI} ₀ o ^RI ₁ ], and channel coding can be performed according to the modulation order as shown in Table 8 below. Is. Here, o ^RI ₀ is the most significant bit (MSB) of ^{the 2-bit input, o RI} ₁ is the least significant bit (LSB) of the 2-bit input, and o ^RI ₂ = (o ^RI ₀ + o ^RI _1). ) Mod2.

Table 9 below shows an example of the map relationship between ^{[o RI} ₀ o ^RI _{1] and RI.}

In Tables 6 and 8, x and y mean placeholders for scrambling RI information to maximize the Euclidean distance of the modulated symbols that carry RI information.

The bit sequences q ^RI ₀ , q ^RI ₁ , q ^RI ₂ , ..., Q ^RI _PRI-1 are generated by combining multiple encoded RI blocks. Here, _QRI is the total number of coded bits for all coded RI blocks. The final bond of the encoded RI blocks may be partially configured so that _{the total bit sequence length is the same as the CID.}

The vector output sequence of channel coding for ^RI is defined as q ^RI ₀ , q ^RI ₁ , ..., Q _{RI PRI-1.} Here, _Q'RI = _QRI / Q _m , and the vector output sequence can be obtained from the algorithm shown in Table 10 below.

式１４において，ｉ＝０，１，２，…，Ｑ_ＲＩ−１であり，基本シーケンスＭ_ｉ，ｎは，３ＧＰＰ ＴＳ３６．２１２規格文書の表５.２.２.６.４−１.を参照されたい。 On the other hand, if the RI (or ACK / NACK) information bits are 3 bits or more and 11 bits or less, RM coding is applied to generate a 32-bit output sequence. The RM-encoded RI (or ACK / NACK) blocks b ₀ , b ₁ , b ₂ , b ₃ , ..., B _B-1 are calculated as in Equation 14 below. Here, i = 0, 1, 2, ..., B-1, and B = 32.
(Equation 14)

In Equation 14, i = 0, 1, 2, _..., a _Q RI -1, basic sequence _{M i, n,} the table 5.2.2.6.4-1 of 3GPP TS36.212 standards documents. The Please refer.

4. Embodying device FIG. 21 shows a device capable of embodying the methods described with reference to FIGS. 1 to 20.

A terminal (UE) can act as a transmitter on the uplink and as a receiver on the downlink. In addition, the base station (eNB) can operate as a receiver on the uplink and as a transmitter on the downlink.

That is, terminals and base stations can include transmit modules 2140, 2150 and receive modules 2150, 2170, respectively, to control the transmission and reception of information, data and / or messages, information, data and / or messages. Can include antennas 2100, 2110, etc. for transmitting and receiving.

Further, the terminal and the base station may include processors 2120 and 2130 for executing the above-described embodiment of the present invention, and memories 2180 and 2190 for temporarily or permanently storing the processing procedure of the processor, respectively. it can.

The embodiments of the present invention can be carried out using the components and functions of the terminal and the base station apparatus described above. Here, the apparatus described with reference to FIG. 21 may further include the configurations of FIGS. 2 to 4, and preferably the processor includes the configurations of FIGS. 2 to 4.

The processor of the mobile terminal can monitor the search space and receive the PDCCH signal. In particular, in the case of an LTE-A terminal, by performing blind decoding (BD) on the extended CSS, it is possible to receive the PDCCH without blocking the PDCCH signal with another LTE terminal.

In particular, the terminal processor 2120 can transmit the uplink control information to the base station together with the PUSCH signal transmission. That is, the processor of the terminal can calculate the number of resource elements (RE) for transmitting HARQ-ACK, CQI, RI, etc. by using the methods disclosed in Equations 1 to 10. Therefore, the terminal can generate a UCI using the calculated number of resource elements, piggyback the uplink data (UL-SCH), and transmit the UCI to the base station.

The transmit and receive modules included in the terminal and base station include packet modulation / demodulation function for data transmission, high-speed packet channel coding function, orthogonal frequency division multiple access (OFDA) packet schedule, and time division duplex communication (TDD). ) Packet schedule and / or channel multiplexing function can be performed. In addition, the terminal and base station of FIG. 21 may further include a low power radio frequency (RF) / intermediate frequency (IF) module.

On the other hand, in the present invention, the terminals include a personal digital assistant (PDA), a cellular telephone, a personal communication service (PCS) telephone, a GSM telephone, a broadband CDMA (WCDMA) telephone, an MBS (Mobile Broadband System) telephone, and a handheld (Hand-Held). ) A PC, a notebook PC, a smartphone, a multi-mode multi-band (MM-MB) terminal, or the like can be used.

Here, a smartphone is a terminal that combines the merits of a mobile communication terminal and a personal mobile terminal, and the mobile communication terminal is equipped with schedule management, facsimile transmission / reception, Internet connection, etc., which are the functions of the personal mobile terminal. Refers to a terminal that integrates the data communication functions of. A multi-mode multi-band terminal is a terminal that has a built-in multiple modem chip and can operate in any of mobile Internet systems and other mobile communication systems (for example, CDMA2000 system, WCDMA system, etc.). Point to.

The above-described embodiment of the present invention can be embodied by various means. For example, the embodiments of the present invention can be embodied by hardware, firmware, software, or a combination thereof.

In the case of hardware implementation, the methods according to the embodiments of the present invention are one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices. It can be embodied by (PLD), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, and the like.

In the case of realization by firmware or software, the method according to the embodiment of the present invention may be in the form of a module, procedure or function performing the function or operation described above. For example, the software code can be stored in the memory units 2180 and 2190 and driven by the processors 2120 and 2130. The memory unit is provided inside or outside the processor, and can transfer data to and from the processor by various means already known.

The present invention can be embodied in other particular forms without departing from the spirit and essential features of the present invention. Therefore, the above detailed explanation should not be interpreted constrainedly in any aspect, but should be considered as an example. The scope of the present invention must be determined by the rational interpretation of the appended claims, and any modification within the equivalent scope of the present invention is included in the scope of the present invention. The present invention is not limited to the embodiments disclosed herein, but has the broadest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit citation relationship within the scope of claims can be combined to form an example, or can be included as a new claim by amendment after filing.

The embodiments of the present invention are applicable to various wireless connection systems. Examples of various wireless connection systems include 3GPP, 3GPP2 and / or IEEE 802. There is an xx system and so on. In addition to these various wireless connection systems, the examples of the present invention can be applied to any technical field to which these various wireless connection systems are applied.

Claims (20)

A method of transmitting channel quality control information (CQI) using two transmission blocks in a wireless connection system that provides a hybrid automatic repeat request (HARQ).
A step in which the terminal receives a physical downlink control channel (PDCCH) signal containing downlink control information (DCI), and
A step of calculating the number of coded symbols (Q') required to transmit the CQI using the DCI, and a step of calculating the number of coded symbols (Q').
It has a step of transmitting the CQI based on the number of coded symbols via a physical uplink shared channel (PUSCH) to which the HARQ is applied.
The number of coded symbols (Q') is expressed in the formula.

Calculated using
Wherein the DCI, subcarrier number information regarding heat transmission block for transmitting the CQI and _{^{(M PUSCH-initial (x)}} SC), information about the number of code blocks associated with the previous Kiden feed block ^{(C ( x)} ) and information on the size of the code block (K ^(x) _r ) are included.
The ^{N PUSCH-initial} _{(x) symb} represents the number of single carrier frequency division multiple access (SC-FDMA) symbols per initial PUSCH transmission,
Wherein 'x' in an index of the transmission block is one of the two transport blocks, method. The method according to claim 1, wherein the index'x' represents a transmission block having a higher modulation and coding method (MCS) level among the two transmission blocks. Wherein when two modulation and coding schemes of the transmission block (MCS) level is the same, before Kiden feed block is the first transport block of said two transport blocks, The method of claim 1. Before SL terminal the CQI, and transmits the piggybacked on uplink data to be re-transmitted using the HARQ scheme, the method of claim 1. The terminal further has a step of calculating information about the uplink data.
The information about the uplink data is the formula.

4. The method of claim 4, which is calculated using. A method of receiving channel quality control information (CQI) using two transmission blocks in a wireless connection system that provides a hybrid automatic repeat request (HARQ).
A step in which a base station transmits a physical downlink control channel (PDCCH) signal containing downlink control information (DCI) to a terminal, and
It has a step of receiving the CQI from the terminal via a physical uplink shared channel (PUSCH) to which the HARQ is applied.
The number of coded symbols (Q') required to transmit the CQI is expressed in the formula.

Calculated using
Wherein the DCI, subcarrier number information regarding heat transmission block for transmitting the CQI and _{^{(M PUSCH-initial (x)}} SC), information about the number of code blocks associated with the previous Kiden feed block ^{(C ( x)} ) and information on the size of the code block (K ^(x) _r ) are included.
The ^{N PUSCH-initial} _{(x) symb} represents the number of single carrier frequency division multiple access (SC-FDMA) symbols per initial PUSCH transmission,
Wherein 'x' in an index of the transmission block is one of the two transport blocks, method. The method according to claim 6, wherein the index'x' represents a transmission block having a higher modulation and coding method (MCS) level among the two transmission blocks. Wherein when two modulation and coding schemes of the transmission block (MCS) level is the same, before Kiden feed block is the first transport block of said two transport blocks, The method of claim 6. Before SL CQI is received piggybacked on uplink data to be re-transmitted using the HARQ scheme, the method of claim 6. The information about the uplink data is the formula.

9. The method of claim 9, which is calculated using. A terminal that transmits channel quality control information (CQI) using two transmission blocks in a wireless connection system that provides a hybrid automatic repeat request (HARQ).
A transmission module for transmitting wireless signals and
A receiving module for receiving wireless signals and
It comprises a processor that provides the transmission of the CQI.
The terminal is
Receives a physical downlink control channel (PDCCH) signal containing downlink control information (DCI) and receives
Using the DCI, the number of coded symbols (Q') required to transmit the CQI is calculated.
Based on the number of coded symbols, the CQI is transmitted via the physical uplink shared channel (PUSCH) to which the HARQ is applied.
The number of coded symbols (Q') is expressed in the formula.

Calculated using
Wherein the DCI, subcarrier number information regarding heat transmission block for transmitting the CQI and _{^{(M PUSCH-initial (x)}} SC), information about the number of code blocks associated with the previous Kiden feed block ^{(C ( x)} ) and information on the size of the code block (K ^(x) _r ) are included.
The ^{N PUSCH-initial} _{(x) symb} represents the number of single carrier frequency division multiple access (SC-FDMA) symbols per initial PUSCH transmission,
Wherein 'x' in an index of the transmission block is one of the two transport blocks, terminal. The terminal according to claim 11, wherein the index'x' represents a transmission block having a higher modulation and coding method (MCS) level among the two transmission blocks. Wherein when two modulation and coding schemes of the transmission block (MCS) level is the same, before Kiden feed block is the first transport block of said two transport blocks, terminal of claim 11. The terminal according to claim 11, wherein the CQI is piggybacked to uplink data to be retransmitted using the HARQ method and transmitted. The information about the uplink data is expressed in the formula.

14. The terminal according to claim 14, which is calculated using. A base station (eNB) that transmits channel quality control information (CQI) using two transmission blocks in a wireless connection system that provides a hybrid automatic repeat request (HARQ).
A transmission module for transmitting wireless signals and
A receiving module for receiving wireless signals and
It comprises a processor that provides the transmission of the CQI.
The eNB transmits a physical downlink control channel (PDCCH) signal including downlink control information (DCI) to a terminal (UE), and the physical uplink shared channel (PUSCH) to which the HARQ is applied from the UE. Receives the CQI via
The number of coded symbols (Q') required to transmit the CQI is expressed in the formula.

Calculated using
Wherein the DCI, subcarrier number information regarding heat transmission block for transmitting the CQI and _{^{(M PUSCH-initial (x)}} SC), information about the number of code blocks associated with the previous Kiden feed block ^{(C ( x)} ) and information on the size of the code block (K ^(x) _r ) are included.
The ^{N PUSCH-initial} _{(x) symb} represents the number of single carrier frequency division multiple access (SC-FDMA) symbols per initial PUSCH transmission,
Wherein 'x' in an index of the transmission block is one of the two transport blocks, a base station. The base station according to claim 16, wherein the index'x' represents a transmission block having a higher modulation and coding method (MCS) level among the two transmission blocks. Wherein when two modulation and coding schemes of the transmission block (MCS) level is the same, before Kiden feed block is the first transport block of said two transport blocks, a base station according to claim 16. The CQI, the Ru is received is piggybacked on uplink data to be re-transmitted using the HARQ scheme, the base station according to claim 16. Information on the previous Symbol uplink data, the formula

Ru is calculated using the base station according to claim 19.

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