JP5367014B2 - Method and apparatus for transmitting control information in a wireless communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for transmitting control information in a wireless communication system, and an apparatus for the same. <P>SOLUTION: A method for transmitting information data by using an RM (Reed-Muller) coding scheme in a wireless communication system is disclosed. The method includes the following steps of: configuring the number of resource elements for transmitting the information data; generating coded information data having a specific bit size by applying RM coding to the information data; performing rate matching to the coded information data so that the rate-matched information data can correspond to the configured resource elements; and transmitting the rate-matched information data by using the configured number of the resource elements. The minimum value for the number of the resource elements is defined based upon a bit size of the information data and a bit size per symbol by a modulation order. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a wireless communication system, and more particularly, to a method for transmitting control information in a wireless communication system and an apparatus therefor.

  In a mobile communication system, a user equipment (User Equipment) can receive information from a base station through a downlink, and can transmit information through an uplink. The information transmitted or received by the user equipment includes data and various control information, and various physical channels exist depending on the type and use of information transmitted or received by the user equipment.

  FIG. 1 is a diagram for explaining a physical channel used in a 3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution) system, which is an example of a mobile communication system, and a general signal transmission method using them.

  In step S101, the user equipment that is turned on again or enters a new cell after the power is turned off performs an initial cell search operation such as synchronizing with the base station. For this purpose, the user equipment receives a primary synchronization channel (P-SCH) and a secondary synchronization channel (S-SCH) from the base station, synchronizes with the base station, and synchronizes the cell ID, etc. Information can be acquired. Thereafter, the user equipment can receive the physical broadcast channel from the base station and acquire the broadcast information in the cell. Meanwhile, the user equipment can check a downlink channel state by receiving a downlink reference signal (DLRS) in an initial cell search stage.

  In step S102, the user equipment that has completed the initial cell search receives a physical downlink control channel (PDCCH: Physical Downlink Control Channel) and a physical downlink shared channel (PDSCH) corresponding to the physical downlink control channel information. More specific system information can be acquired.

  On the other hand, in order to complete the connection to the base station, the user equipment that has not completed the connection with the base station can perform a random access procedure (Random Access Procedure) as in steps S103 to S106. . To this end, the user equipment transmits a feature sequence as a preamble through a physical random access channel (PRACH) (S103), and a physical downlink control channel and a corresponding physical downlink shared channel. The response message for the random access can be received through (S104). In the case of contention-based random access excluding handover (handover), transmission of an additional physical random access channel (S105) and reception of a physical downlink control channel and a corresponding physical downlink shared channel are performed thereafter (S105). A contention resolution procedure (S106) can be performed.

  The user equipment that has performed the above procedure thereafter receives the physical downlink control channel / physical downlink shared channel (S107) and the physical uplink shared channel (PUSCH) as a general uplink / downlink signal transmission procedure. : Physical Uplink Shared Channel (PUCCH) / Physical Uplink Control Channel (PUCCH) transmission (S108).

  FIG. 2 is a diagram illustrating a signal processing process for transmitting an uplink signal by a user equipment.

  To transmit the uplink signal, the user equipment scrambling module 210 may scramble the transmission signal using the user equipment specific scrambling signal. The scrambled signal is input to the modulation mapper 220, and is BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase Shift Keying) or 16QAM (Quadrature Dependent) depending on the type and / or channel state of the transmission signal. It is modulated into a complex symbol by a modulation method. The modulated complex symbols are then processed by transform precoder 230 and then input to resource element mapper 240, which maps the complex symbols to time-frequency resource elements used for actual transmission. Can do. The signal thus processed 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 signal processing process for the base station to transmit a downlink signal.

  In the 3GPP LTE system, a base station can transmit one or more codewords on the downlink. Accordingly, each of the one or more codewords can be processed as complex symbols via the scrambling module 301 and the modulation mapper 302, as in the uplink of FIG. After that, the complex symbols are mapped to a plurality of layers by the layer mapper 303, and each layer is multiplied by a predetermined precoding matrix selected according to the channel state by the precoding module 304 and assigned to each transmission antenna. Can be done. Each antenna-specific transmission signal processed in this way is mapped to a time-frequency resource element used for transmission by the resource element mapper 305, and thereafter, from each antenna via an OFDM (Orthogonal Frequency Division Multiple Access) signal generator 306. Can be transmitted.

  In a mobile communication system, when a user equipment transmits a signal on the uplink, PAPR (Peak-to-Average Power Ratio) may become even more problematic than when a base station transmits a signal on the downlink. Therefore, as described with reference to FIGS. 2 and 3, the uplink signal transmission uses an SC-FDMA (Single Carrier-Frequency Division Multiple Access) system, unlike the OFDMA system used for downlink signal transmission.

  FIG. 4 is a diagram for explaining an SC-FDMA scheme for uplink signal transmission and an OFDMA scheme for downlink signal transmission in a mobile communication system.

  The user equipment for uplink signal transmission and the base station for downlink signal transmission are both a serial-to-parallel converter 401, a subcarrier mapper 403, an M-point IDFT module 404, and It is the same in that a CP (Cyclic Prefix) addition module 406 is included.

  However, the user equipment for transmitting signals in the SC-FDMA scheme further includes a parallel-to-serial converter 405 and an N-point DFT module 402, and the N-point DFT module 402 includes: It is characterized in that a transmission signal has a single carrier property by canceling a part of the IDFT processing effect of the M-point IDFT module 404. FIG. 5 is a diagram for explaining a signal mapping method on the frequency domain for satisfying the single carrier characteristic in the frequency domain. 5A shows a local type mapping method, and FIG. 5B shows a distributed mapping type. Currently, the 3GPP LTE system defines a local mapping method.

  Meanwhile, a clustered SC-FDMA, which is a modified form of SC-FDMA, will be described. The clustered SC-FDMA sequentially divides the DFT process output samples into sub-groups in the sub-carrier mapping process between the DFT process and the IFFT process, and the sub-group at the IFFT sample input unit. It is characterized by mapping to sub-carrier regions separated from each other by group, and may include a filtering process and a cyclic extension process according to circumstances.

  In this case, the subgroup can be referred to as a cluster, and cyclic extension refers to the interval between consecutive symbols to prevent inter-symbol interference (ISI) while each symbol of the subcarrier is transmitted through the multipath channel. It means that a guard interval longer than the maximum delay spread of the channel is inserted in the (Guard Interval).

  The present invention is to provide a method and apparatus for transmitting control information in a wireless communication system.

  The technical problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are based on the following description and are based on ordinary knowledge in the technical field to which the present invention belongs. It will be clear to those who have

  A method of transmitting information data (Information Data) using an RM coding method (Reed-Muller coding scheme) in a wireless communication system that is a phase of the present invention includes a bit size of the information data.

が既に設定された個数以上である場合、前記情報データを第１情報データ及び第２情報データに区分する段階と、前記第１情報データ及び前記第２情報データのそれぞれにＲＭコーディングを適用して符号化する段階と、前記符号化された第１情報データ及び第２情報データを結合して送信する段階と、を含む。

Is equal to or more than a preset number, the information data is divided into first information data and second information data, and RM coding is applied to each of the first information data and the second information data. Encoding, and combining and transmitting the encoded first information data and second information data.

  Preferably, the encoding step includes the number of resource elements for transmitting the information data.

を、前記情報データのビットサイズ

The bit size of the information data

に基づいて設定する段階と、前記計算された個数

And setting based on the calculated number

のリソース要素を、前記第１情報データのための第１リソース要素の個数

The number of first resource elements for the first information data

及び前記第２情報データのための第２リソース要素の個数

And the number of second resource elements for the second information data

として均等に割り当てる段階と、前記符号化された第１情報データに対して前記第１リソース要素の個数

And the number of first resource elements for the encoded first information data

に対応するようにレートマッチングを行い、前記符号化された第２情報データに対して前記第２リソース要素の個数

The rate matching is performed so as to correspond to the number of the second resource elements with respect to the encoded second information data.

に対応するようにレートマッチングを行う段階と、を含むことを特徴とする。また、前記送信する段階は、前記結合された第１情報データ及び第２情報データを前記設定された個数

Performing rate matching so as to correspond to the above. The transmitting may include the set number of the combined first information data and second information data.

のリソース要素を用いて送信する段階を含む。

And transmitting using the resource element.

  On the other hand, a transmitting apparatus in a wireless communication system according to another aspect of the present invention is configured to use a bit size of information data (Information Data).

が既に設定された個数以上である場合、前記情報データを第１情報データ及び第２情報データに区分し、前記第１情報データ及び前記第２情報データのそれぞれにＲＭコーディングを適用して符号化し、前記符号化された第１情報データ及び第２情報データを結合するプロセッサーと、前記結合された第１情報データ及び第２情報データを送信する送信モジュールと、を含むことを特徴とする。

Is equal to or more than a preset number, the information data is divided into first information data and second information data, and each of the first information data and the second information data is encoded by applying RM coding. And a processor for combining the encoded first information data and second information data, and a transmission module for transmitting the combined first information data and second information data.

  In addition, the processor, the number of resource elements for transmitting the information data

を、前記情報データのビットサイズ

The bit size of the information data

に基づいて設定し、前記計算された個数

Set based on the calculated number

のリソース要素を、前記第１情報データのための第１リソース要素の個数

The number of first resource elements for the first information data

及び前記第２情報データのための第２リソース要素の個数

And the number of second resource elements for the second information data

として均等に割り当て、前記符号化された第１情報データに対して前記第１リソース要素の個数

And the number of the first resource elements for the encoded first information data

に対応するようにレートマッチングを行い、前記符号化された第２情報データに対して前記第２リソース要素の個数

The rate matching is performed so as to correspond to the number of the second resource elements with respect to the encoded second information data.

に対応するようにレートマッチングを行うことを特徴とする。また、前記送信モジュールは、前記結合された第１情報データ及び第２情報データを、前記設定された個数

The rate matching is performed so as to correspond to the above. The transmission module may transmit the combined first information data and second information data to the set number.

のリソース要素を用いて送信することを特徴とする。

It transmits using the resource element of.

  Here, the already set number is 12 bits, and the size of each of the encoded first information data and the encoded second information data is 32 bits. The information data is uplink control information (UCI), and the uplink control information is transmitted through an uplink shared channel. Preferably, the uplink control information includes HARQ (Hybrid Automatic Retransmission reQuest) -ACK / NACK (Acknowledgement / Negative Acknowledgment) data or RI (Rank Indicator).

  Specifically, here, the size of the first information data

は、

Is

ビットであり、前記第２情報データのサイズ

Bit, the size of the second information data

は

Is

ビットであると好ましい。また、前記リソース要素の個数

A bit is preferred. The number of resource elements

が偶数の場合、前記第１リソース要素の個数

Is an even number, the number of the first resource elements

と前記第２リソース要素の個数

And the number of the second resource element

はそれぞれ

Each

であることを特徴とする。また、前記リソース要素の個数

It is characterized by being. The number of resource elements

が奇数である場合、前記第１リソース要素の個数

Is the odd number, the number of the first resource elements

は

Is

であり、前記第２リソース要素の個数

And the number of the second resource elements

は

Is

であることを特徴とする。

It is characterized by being.

In order to achieve the above object, the present invention provides, for example, the following means.
(Item 1)
A method of transmitting information data (Information Data) using an RM coding technique (Reed-Muller coding scheme) in a wireless communication system,
Bit size of the above information data

が既に設定された個数以上である場合、上記情報データを第１情報データ及び第２情報データに区分する段階と、
上記第１情報データ及び上記第２情報データのそれぞれにＲＭコーディングを適用して符号化する段階と、
上記符号化された第１情報データ及び第２情報データを結合して送信する段階と、
を含む、情報データ送信方法。
（項目２）
上記第１情報データのサイズ

If the number is more than the preset number, dividing the information data into first information data and second information data;
Encoding each of the first information data and the second information data by applying RM coding;
Combining and transmitting the encoded first information data and second information data;
Including an information data transmission method.
(Item 2)
Size of the first information data

は、

Is

ビットであり、
上記第２情報データのサイズ

Bit,
Size of the second information data

は、

Is

ビットであることを特徴とする、上記項目のいずれかに記載の情報データ送信方法。
（項目３）
上記符号化する段階は、
上記情報データを伝送するためのリソース要素の個数

The information data transmission method according to any one of the above items, wherein the information data is a bit.
(Item 3)
The encoding step includes
Number of resource elements for transmitting the above information data

を、上記情報データのビットサイズ

The bit size of the information data

に基づいて設定する段階と、
上記計算された個数

The stage of setting based on
Calculated number above

のリソース要素を上記第１情報データのための第１リソース要素の個数

Number of first resource elements for the first information data

及び上記第２情報データのための第２リソース要素の個数

And the number of second resource elements for the second information data

として均等に割り当てる段階と、
上記符号化された第１情報データに対して上記第１リソース要素の個数

And evenly assigning stages as
The number of the first resource elements with respect to the encoded first information data

に対応するようにレートマッチングを行い、上記符号化された第２情報データに対して上記第２リソース要素の個数

The rate matching is performed so as to correspond to the number of the second resource elements for the encoded second information data.

に対応するようにレートマッチングを行う段階と、
を含むことを特徴とする、上記項目のいずれかに記載の情報データ送信方法。
（項目４）
上記送信する段階は、
上記結合された第１情報データ及び第２情報データを、上記設定された個数

Performing rate matching to correspond to
The method for transmitting information data according to any one of the above items, comprising:
(Item 4)
The sending step is
The combined number of the first information data and the second information data is set to the set number.

のリソース要素を用いて送信する段階を含むことを特徴とする、上記項目のいずれかに記載の情報データ送信方法。
（項目５）
上記既に設定された個数は、１２ビットであり、
上記符号化された第１情報データと上記符号化された第２情報データのそれぞれのサイズは、３２ビットであることを特徴とする、上記項目のいずれかに記載の情報データ送信方法。
（項目６）
上記情報データは、アップリンク制御情報（ＵＣＩ；Ｕｐｌｉｎｋ Ｃｏｎｔｒｏｌ Ｉｎｆｏｒｍａｔｉｏｎ）であり、
上記アップリンク制御情報は、アップリンク共用チャネルを通じて伝送されることを特徴とする、上記項目のいずれかに記載の情報データ送信方法。
（項目７）
上記アップリンク制御情報は、ＨＡＲＱ（Ｈｙｂｒｉｄ Ａｕｔｏｍａｔｉｃ Ｒｅｔｒａｎｓｍｉｓｓｉｏｎ ｒｅＱｕｅｓｔ）−ＡＣＫ／ＮＡＣＫ（Ａｃｋｎｏｗｌｅｄｇｍｅｎｔ／Ｎｅｇａｔｉｖｅ Ａｃｋｎｏｗｌｅｄｇｍｅｎｔ）データまたはＲＩ（Ｒａｎｋ Ｉｎｄｉｃａｔｏｒ）を含むことを特徴とする、上記項目のいずれかに記載の情報データ送信方法。
（項目８）
上記リソース要素の個数

The information data transmission method according to any one of the above items, further comprising a step of transmitting using the resource element.
(Item 5)
The number already set is 12 bits,
The information data transmission method according to any one of the above items, wherein each size of the encoded first information data and the encoded second information data is 32 bits.
(Item 6)
The information data is uplink control information (UCI; Uplink Control Information).
The information data transmission method according to any one of the above items, wherein the uplink control information is transmitted through an uplink shared channel.
(Item 7)
The uplink control information includes HARQ (Hybrid Automatic Retransmission reQuest) -ACK / NACK (Acknowledgement / Negative Acknowledgment) data or RI (Rank Indicator) transmission of any of the above items, Method.
(Item 8)
Number of the above resource elements

が偶数である場合、上記第１リソース要素の個数

Is the even number, the number of the first resource elements

と上記第２リソース要素の個数

And the number of second resource elements

はそれぞれ、

Respectively

であることを特徴とする、上記項目のいずれかに記載の情報データ送信方法。
（項目９）
上記リソース要素の個数

The information data transmission method according to any one of the above items, wherein:
(Item 9)
Number of the above resource elements

が奇数である場合、
上記第１リソース要素の個数

Is odd,
Number of the first resource element

は、

Is

であり、
上記第２リソース要素の個数

And
Number of second resource elements

は、

Is

であることを特徴とする、上記項目のいずれかに記載の情報データ送信方法。
（項目１０）
無線通信システムにおける送信装置であって、
情報データ（Ｉｎｆｏｒｍａｔｉｏｎ Ｄａｔａ）のビットサイズ

The information data transmission method according to any one of the above items, wherein:
(Item 10)
A transmission device in a wireless communication system,
Bit size of information data (Information Data)

が既に設定された個数以上である場合、上記情報データを第１情報データ及び第２情報データに区分し、上記第１情報データ及び上記第２情報データのそれぞれにＲＭコーディングを適用して符号化し、上記符号化された第１情報データ及び第２情報データを結合するプロセッサーと、
上記結合された第１情報データ及び第２情報データを送信する送信モジュールと、
を含む、送信装置。
（項目１１）
上記第１情報データのサイズ

Is equal to or more than the preset number, the information data is divided into first information data and second information data, and encoded by applying RM coding to each of the first information data and the second information data. A processor for combining the encoded first information data and second information data;
A transmission module for transmitting the combined first information data and second information data;
Including a transmitter.
(Item 11)
Size of the first information data

は、

Is

ビットであり、
上記第２情報データのサイズ

Bit,
Size of the second information data

は、

Is

ビットであることを特徴とする、上記項目のいずれかに記載の送信装置。
（項目１２）
上記プロセッサーは、
上記情報データを伝送するためのリソース要素の個数

The transmitting device according to any one of the above items, wherein the transmitting device is a bit.
(Item 12)
The above processor
Number of resource elements for transmitting the above information data

を上記情報データのビットサイズ

The above information data bit size

に基づいて設定し、上記計算された個数

Set based on the above calculated number

のリソース要素を上記第１情報データのための第１リソース要素の個数

Number of first resource elements for the first information data

及び上記第２情報データのための第２リソース要素の個数

And the number of second resource elements for the second information data

として均等に割り当て、上記符号化された第１情報データに対して上記第１リソース要素の個数

に対応するようにレートマッチングを行い、上記符号化された第２情報データに対して上記第２リソース要素の個数

And the number of the first resource elements for the encoded first information data

The rate matching is performed so as to correspond to the number of the second resource elements for the encoded second information data.

に対応するようにレートマッチングを行うことを特徴とする、上記項目のいずれかに記載の送信装置。
（項目１３）
上記送信モジュールは、
上記結合された第１情報データ及び第２情報データを、上記設定された個数

The transmission apparatus according to any one of the above items, wherein rate matching is performed so as to correspond to.
(Item 13)
The transmission module
The combined number of the first information data and the second information data is set to the set number.

のリソース要素を用いて送信することを特徴とする、上記項目のいずれかに記載の送信装置。
（項目１４）
上記既に設定された個数は、１２ビットであり、
上記符号化された第１情報データと上記符号化された第２情報データのそれぞれのサイズは、３２ビットであることを特徴とする、上記項目のいずれかに記載の送信装置。
（項目１５）
上記情報データは、アップリンク制御情報（ＵＣＩ；Ｕｐｌｉｎｋ Ｃｏｎｔｒｏｌ Ｉｎｆｏｒｍａｔｉｏｎ）であり、
上記アップリンク制御情報は、アップリンク共用チャネルを通じて伝送されることを特徴とする、上記項目のいずれかに記載の送信装置。
（項目１６）
上記アップリンク制御情報は、ＨＡＲＱ（Ｈｙｂｒｉｄ Ａｕｔｏｍａｔｉｃ Ｒｅｔｒａｎｓｍｉｓｓｉｏｎ ｒｅＱｕｅｓｔ）−ＡＣＫ／ＮＡＣＫ（Ａｃｋｎｏｗｌｅｄｇｍｅｎｔ／Ｎｅｇａｔｉｖｅ Ａｃｋｎｏｗｌｅｄｇｍｅｎｔ）データまたはＲＩ（Ｒａｎｋ Ｉｎｄｉｃａｔｏｒ）を含むことを特徴とする、上記項目のいずれかに記載の送信装置。
（項目１７）
上記リソース要素の個数

The transmission device according to any one of the above items, wherein transmission is performed using the resource element.
(Item 14)
The number already set is 12 bits,
The transmission apparatus according to any one of the above items, wherein each of the encoded first information data and the encoded second information data has a size of 32 bits.
(Item 15)
The information data is uplink control information (UCI; Uplink Control Information).
The transmission apparatus according to any one of the above items, wherein the uplink control information is transmitted through an uplink shared channel.
(Item 16)
The uplink control information includes HARQ (Hybrid Automatic Retransmission reQuest) -ACK / NACK (Acknowledgement / Negative Acknowledgment) data or RI (Rank Indicator) transmission according to any of the above items.
(Item 17)
Number of the above resource elements

が偶数である場合、上記第１リソース要素の個数

Is the even number, the number of the first resource elements

と上記第２リソース要素の個数

And the number of second resource elements

はそれぞれ、

Respectively

であることを特徴とする、上記項目のいずれかに記載の送信装置。
（項目１８）
上記リソース要素の個数

The transmission device according to any one of the above items, wherein:
(Item 18)
Number of the above resource elements

が奇数である場合、
上記第１リソース要素の個数

Is odd,
Number of the first resource element

は、

Is

であり、
上記第２リソース要素の個数

And
Number of second resource elements

は、

Is

であることを特徴とする、上記項目のいずれかに記載の送信装置。

The transmission device according to any one of the above items, wherein:

(Summary)
The present application discloses a method of transmitting information data (Information Data) using an RM coding method (Reed-Muller coding scheme) in a wireless communication system. Specifically, the method includes setting a number of resource elements for transmitting the information data, and applying RM coding to the information data to generate encoded information data having a specific bit size. Performing rate matching on the encoded information data so as to correspond to the set resource elements, and using the set number of resource elements for the rate-matched information data The minimum value of the number of resource elements is defined based on a bit size of the information data and a bit size per symbol according to a modulation order.

  In the wireless communication system, the transmitting end can effectively encode the control information according to the present invention.

  The effects obtained by the present invention are not limited to the effects mentioned above, and other effects not mentioned can be understood by those having ordinary knowledge in the technical field to which the present invention belongs from the following description. I will.

The accompanying drawings, which are included as part of the detailed description to assist in understanding the present invention, provide examples of the present invention and together with the detailed description explain the technical idea of the present invention.
It is a figure for demonstrating the physical channel used for the 3GPP LTE system which is an example of a mobile communication system, and the general signal transmission method using these. It is a figure for demonstrating the signal processing process for a user apparatus to transmit an uplink signal. It is a figure for demonstrating the signal processing process for a base station to transmit a downlink signal. It is a figure for demonstrating the SC-FDMA system for uplink signal transmission and the OFDMA system for downlink signal transmission in a mobile communication system. It is a figure explaining the signal mapping system on the frequency domain for satisfy | filling a single carrier characteristic in a frequency domain. FIG. 6 is a diagram illustrating a signal processing process in which DFT process output samples are mapped to a single carrier in cluster SC-FDMA according to an embodiment of the present invention. FIG. 6 is a diagram illustrating a signal processing process in which a DFT process output sample is mapped to a multi-carrier in cluster SC-FDMA according to an embodiment of the present invention. FIG. 6 is a diagram illustrating a signal processing process in which a DFT process output sample is mapped to a multi-carrier in cluster SC-FDMA according to an embodiment of the present invention. FIG. 5 is a diagram illustrating a signal processing process in a segmented SC-FDMA system according to an embodiment of the present invention. FIG. 6 is a diagram for explaining a signal processing process for transmitting a reference signal (Reference Signal; hereinafter referred to as “RS”) in uplink. It is a figure which shows the structure of the sub-frame for transmitting RS in the case of a normal cyclic prefix (normal CP). It is a figure which shows the structure of the sub-frame for transmitting RS in the case of an extended cyclic prefix (extended CP). It is a block diagram explaining the process of the transmission channel with respect to an uplink shared channel. FIG. 5 is a diagram for explaining a method of mapping physical resources for uplink data and control channel transmission. 6 is a flowchart illustrating a method for efficiently multiplexing data and a control channel on an uplink shared channel. It is a block diagram explaining the method to produce | generate the transmission signal of data and a control channel. It is a figure explaining the codeword versus layer mapping method. It is a figure which shows an example of the method of dividing | segmenting information data into a group in order to apply a dual RM coding method in 2nd Example of this invention. It is a figure which shows the other example of the method of dividing | segmenting information data into a group in order to apply a dual RM coding method in 2nd Example of this invention. FIG. 6 is a diagram illustrating a coding chain in dual RM coding according to a second embodiment of the present invention. It is a block block diagram of the communication apparatus by one Example of this invention.

  The structure, operation, and other features of the present invention will be readily understood from the preferred embodiments of the present invention described with reference to the accompanying drawings. The embodiments described below are examples in which the technical features of the present invention are applied to a system using a plurality of orthogonal subcarriers. For convenience, the present invention will be described with reference to an IEEE 802.16 system. However, this is merely an example, and the present invention may be applied to various wireless communication systems including a 3GPP (3rd Generation Partnership Project) system. it can.

  In addition, specific terms used in the following description are provided to help understanding of the present invention, and the use of such specific terms may take other forms without departing from the technical idea of the present invention. It can be changed.

  FIG. 6 is a diagram illustrating a signal processing process in which DFT process output samples are mapped to a single carrier in cluster SC-FDMA according to an embodiment of the present invention. 7 and 8 are diagrams illustrating a signal processing process in which DFT process output samples are mapped to multi-carriers in cluster SC-FDMA according to an embodiment of the present invention.

  FIG. 6 shows an example in which cluster SC-FDMA is applied on an intra-carrier, and FIGS. 7 and 8 correspond to examples in which cluster SC-FDMA is applied on an inter-carrier. In addition, FIG. 7 illustrates a case where subcarrier spacing (spacing) between adjacent component carriers is aligned in a situation where a component carrier that is continuous in the frequency domain is allocated, and a single IFFT block is used. FIG. 8 shows a case where a signal is generated, and FIG. 8 shows that a signal is generated through a plurality of IFFT blocks because component carriers are not adjacent in a state where component carriers are allocated non-continuously in the frequency domain. Indicates when to do.

  In the segment SC-FDMA, since the same number of IFFTs as the number of DFTs are applied, the relationship between the DFTs and IFFTs is made one-to-one, so that the DFT spreading of existing SC-FDMAs is simply And IFFT frequency subcarrier mapping configuration, which can be expressed as NxSC-FDMA or NxDFT-s-OFDMA. In the present invention, these are collectively referred to as segmented SC-FDMA. FIG. 9 is a diagram illustrating a signal processing process in a segmented SC-FDMA system according to an embodiment of the present invention. As shown in FIG. 9, segment SC-FDMA collects the entire time-domain modulation symbols into N groups (N is an integer greater than 1) to reduce the single carrier characteristic condition, and performs DFT on a group basis. It is characterized by performing a process.

  FIG. 10 is a diagram for explaining a signal processing process for transmitting a reference signal (hereinafter referred to as 'RS') in the uplink. As shown in FIG. 10, data generates a signal in the time domain and is transmitted through IFFT after frequency mapping through a DFT precoder, whereas RS omits the process of passing through the DFT precoder and the frequency. After being directly generated in the region (S11), the data is transmitted through a localization mapping (S12), an IFFT (S13) process, and a cyclic prefix (CP) adding process (S14) in sequence.

  FIG. 11 is a diagram illustrating a subframe structure for transmitting an RS in the case of a normal cyclic prefix (normal CP), and FIG. 12 is a diagram illustrating an RS in the case of an extended cyclic prefix (extended CP). It is a figure which shows the structure of the sub-frame for transmitting. In FIG. 11, RS is transmitted through the fourth and eleventh OFDM symbols, and in FIG. 12, RS is transmitted through the third and ninth OFDM symbols.

  Meanwhile, the processing structure of the uplink shared channel as a transmission channel will be described as follows. FIG. 13 is a block diagram illustrating a process of a transmission channel for an uplink shared channel. As shown in FIG. 13, data information multiplexed together with control information includes a transport block (Transport Block; hereinafter referred to as “TB”) to be transmitted in uplink, and CRC for CRC (Cyclic Redundancy Check). Is added to a plurality of code blocks (hereinafter referred to as “CB”) according to the size of the TB, and a CB CRC is added to the plurality of CBs (131). . Channel coding is performed on the result value (132). Note that the channel-coded data is subjected to rate matching (133) and then combined with the CBs again (S134), and the combined CB is CQI / PMI (Channel). It is multiplexed with Quality Information / Precoding Matrix Index (135).

  On the other hand, CQI / PMI is channel-coded separately from data (136). The channel encoded CQI / PMI is multiplexed with the data (135).

  Also, RI (Rank Indication) is channel-coded separately from data (137).

  In the case of ACK / NACK (Acknowledgement / Negative Acknowledgment), channel coding is performed separately from data, CQI / PMI and RI (138). Multiplexed data, CQI / PMI, separately channel-encoded RI, and ACK / NACK are channel-interleaved to generate an output signal (139).

  Meanwhile, a physical resource element (Resource Element; hereinafter referred to as 'RE') for data and a control channel in the LTE uplink system will be described.

  FIG. 14 is a diagram for explaining a physical resource mapping method for uplink data and control channel transmission.

  As shown in FIG. 14, CQI / PMI and data are mapped onto the RE in a time-first manner. The encoded ACK / NACK is punctured and inserted around the demodulation reference signal (DMRS) symbol, and the RI is inserted into the RE next to the RE where the ACK / NACK is located. To be mapped. Resources for RI and ACK / NACK can occupy up to 4 SC-FDMA symbols. When data and control information are transmitted simultaneously on the uplink shared channel, the mapping order is RI, CQI / PMI and data concatenation, and ACK / NACK. That is, after the RI is first mapped, the connection between the CQI / PMI and the data is mapped to the remaining REs other than the RE to which the RI is mapped in a time-priority manner. The ACK / NACK is mapped while puncturing the concatenation of the already mapped CQI / PMI and data.

  As described above, by multiplexing data and uplink control information (UCI) such as CQI / PMI, single carrier characteristics can be satisfied. Therefore, uplink transmission maintaining low CM (Cubic Metric) can be achieved.

  In a system improved from the existing system (for example, LTE Rel-10), at least one of the two transmission schemes of SC-FDMA and cluster DFTs OFDMA is uplink transmission on each component carrier for each user equipment. And can be applied together with UL-MIMO (Uplink-MIMO) transmission.

  FIG. 15 is a flowchart illustrating a method for efficiently multiplexing data and control channels on an uplink shared channel.

  As illustrated in FIG. 15, the user equipment recognizes a rank for data of a physical uplink shared channel (PUSCH) (S150). Thereafter, the user equipment has an uplink control channel (uplink control information (UCI) such as CQI, ACK / NACK, and RI) in the same rank as the rank for the data. ) Is set (S151). Further, the user equipment multiplexes data and control information (S152). Then, after mapping the data and CQI in a time-first manner, the RI is mapped to the specified RE, and the channel interleaving (channel interleaving) is performed to help map the ACK / NACK by puncturing the RE around the DMRS. ) Can be performed (S153).

  Next, the data and control channel can be modulated with QPSK, 16QAM, 64QAM, etc. based on the MCS table (S154). This modulation phase can be at other positions (eg, the modulation block can be moved before the data and control channel multiplexing phase). Channel interleaving can be performed in units of codewords or in units of layers.

  FIG. 16 is a block diagram illustrating a method for generating data and control channel transmission signals. The position of each block can be changed according to the application method.

  Assuming two codewords, channel coding is performed for each codeword (160), and rate matching is performed according to a given MCS level and resource size (161). Thereafter, the encoded bits can be scrambled (cell-specific), user equipment specific (UE-specific), or codeword specific (162).

  Thereafter, codeword to layer mapping is performed (163). In this process, a layer shift or a permutation operation may be included.

  FIG. 17 is a diagram for explaining a codeword-to-layer mapping method. Codeword-to-layer mapping can be performed according to the rules shown in FIG. In FIG. 17, the precoding position may be different from the precoding position in FIG.

  Control information such as CQI, RI, and ACK / NACK is channel-coded according to given conditions (165). At this time, CQI, RI, and ACK / NACK can be encoded using the same channel code for all codewords, or can be encoded using different channel codes for each codeword.

  Thereafter, the number of encoded bits can be changed by the bit size controller (166). The bit size controller may be unified with the channel coding block (165). The signal output from the bit size control unit is scrambled (167). At this time, scrambling can be performed with cell-specific, layer-specific, codeword-specific, or user equipment specific (UE-specific).

  The bit size control unit can operate as follows.

  (1) The control unit recognizes the rank (n_rank_push) of data for 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 multiplied by the rank of the control channel. The number of bits is expanded.

  One way to do this is to simply duplicate and repeat the control channel. In this case, the control channel may be at an information level before channel coding or at an encoded bit level after channel coding. That is, for example, when 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] and 8 bits.

  When the bit size control unit and the channel encoding unit are configured as a unit, the encoded bits are generated by applying channel coding and rate matching defined in the existing system (for example, LTE Rel-8). Can do.

  In addition to this bit size control unit, bit level interleaving can be performed to provide further randomization for each layer. Alternatively, interleaving can be performed at the modulation symbol level equivalently.

  The CQI / PMI channel and the data for the two codewords can be multiplexed with a data / control multiplexer (164). Thereafter, the channel interleaver maps the CQI / PMI according to the time priority mapping method while mapping the ACK / NACK information to the REs around the uplink DMRS in both slots in the subframe (168).

  Then, modulation is performed on each layer (169), DFT precoding (170), MIMO precoding (171), RE mapping (172), and the like are sequentially performed, and an SC-FDMA signal is generated to generate an antenna port. (173).

  These functional blocks are not limited to the positions shown in FIG. 16, and the positions can be changed depending on circumstances. For example, the scrambling blocks 162 and 167 may be positioned next to the channel interleaving block. The codeword to layer mapping block 163 may also be located next to the channel interleaving block 168 or next to the modulation mapper block 169.

  In the present invention, a UCI channel coding method and resource allocation and transmission method based on UCI such as CQI, ACK / NACK, and RI are transmitted on PUSCH. The present invention is basically created on the basis of transmission in a SU-MIMO environment, but can also be applied to single antenna transmission, which is a special case of SU-MIMO.

  When UCI and data are currently transmitted on PUSCH on SU-MIMO, they are transmitted using the following method. The position of UCI on PUSCH will be described.

  The CQI is concatenated with the data, and is mapped to the remaining REs other than the RE mapped to the RI using the same modulation order and constellation as the data in a time-first mapping scheme. In the case of SU-MIMO, the CQI is spread and transmitted in one codeword. The codeword in which the CQI is transmitted is a codeword having a high MCS level out of the two codewords, and the MCS level is the same. It is transmitted to code word 0. Also, ACK / NACK is arranged while puncturing the concatenation of CQI and data already mapped to symbols located on both sides of the reference signal, and the reference signal is located at the 3rd and 10th symbols. Starting from the lowest subcarrier of the 2nd, 4th, 9th and 11th symbols, mapping is performed on the upper side. At this time, ACK / NACK symbols are mapped in the order of 2, 11, 9, 4 symbols. The RI is mapped to a symbol located next to the ACK / NACK, and is mapped first among all information (data, CQI, ACK / NACK, RI) transmitted to the PUSCH. Specifically, RI is mapped to the upper side starting from the lowest subcarrier of the 1st, 5th, 8th, and 12th symbols. At this time, the RI symbols are mapped in the order of the first, twelfth, eighth, and fifth symbols. In particular, when the size of the information bits (information bits) is 1 bit or 2 bits, ACK / NACK and RI are mapped by a method like QPSK using only four corners of the constellation, and 3 bits or more. Can be mapped using all constellations of the same modulation order as the data. Also, ACK / NACK and RI transmit the same information using the same resource at the same position in all layers.

  Next, a method for calculating the number of resource elements for UCI on PUSCH will be described. First, the number of resource elements for CQI and ACK / NACK (or RI) transmitted on PUSCH can be calculated by the following mathematical formula 1 and mathematical formula 2, respectively.

ここで、ＣＱＩ及びＡＣＫ／ＮＡＣＫ（または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（ｃｏｄｅｄ ｍｏｄｕｌａｔｉｏｎ ｓｙｍｂｏｌ）の個数で表現することができる。

Here, the number of resource elements for CQI and ACK / NACK (or RI) can be expressed by the number of coded modulation symbols.

  Next, a channel coding method for UCI transmitted on PUSCH will be described. First, in the case of CQI, if the payload size is 11 bits or less,

に、下記の表１を用いたＲＭ（Ｒｅｅｄ−Ｍｕｌｌｅｒ）コーディングを適用して、３２ビットの出力シーケンスを生成する。また、ＣＱＩのペイロードサイズが１１ビットを超えると、８ビットのＣＲＣを付加した後、ＴＢＣＣ（Ｔａｉｌ ｂｉｔｉｎｇ ｃｏｎｖｏｌｕｔｉｏｎａｌ ｃｏｄｉｎｇ）を適用することができる。

Then, RM (Reed-Muller) coding using Table 1 below is applied to generate a 32-bit output sequence. Further, when the payload size of CQI exceeds 11 bits, after adding 8-bit CRC, TBCC (Tail biting convolutional coding) can be applied.

  Meanwhile, ACK / NACK and RI channel coding transmitted on the PUSCH will be described. If the information data size of ACK / NACK and RI is 1 bit, that is, the input sequence is

であれば、下記の表２のように変調次数によってチャネルコーディングが行われる。また、ＡＣＫ／ＮＡＣＫとＲＩの情報データサイズが２ビットであれば、すなわち、入力シーケンスが

Then, channel coding is performed according to the modulation order as shown in Table 2 below. If the information data size of ACK / NACK and RI is 2 bits, that is, the input sequence is

の場合は、下記の表３のように変調次数によってチャネルコーディングが行われる。特に、表３で、

In this case, channel coding is performed according to the modulation order as shown in Table 3 below. In particular, in Table 3,

は、コードワード０のためのＡＣＫ／ＮＡＣＫまたはＲＩデータに対応し、

Corresponds to ACK / NACK or RI data for codeword 0,

は、コードワード１のためのＡＣＫ／ＮＡＣＫまたはＲＩデータに対応し、

Corresponds to ACK / NACK or RI data for codeword 1,

は

Is

である。特に、表２及び表３で、

It is. In particular, in Table 2 and Table 3,

は１の値を、

Is a value of 1,

は前の値の反復を意味する。

Means repetition of the previous value.

  However, if the information data size of ACK / NACK and RI is 3 bits or more and 11 bits or less, RM (Reed-Muller) coding using Table 1 below is applied to generate a 32-bit output sequence.

特に、表１を用いたＲＭコーディングの場合、

In particular, in the case of RM coding using Table 1,

は、下記の数学式３のように表現され、

Is expressed as Equation 3 below,

である。

It is.

最後に、Ｂビットで符号化されたＵＣＩ、すなわち、ＡＣＫ／ＮＡＣＫまたはＲＩデータは、数学式１及び数学式２によって計算された

Finally, UCI encoded with B bits, ie ACK / NACK or RI data, was calculated by Equation 1 and Equation 2.

のリソース要素にマッピングさせるために、下記の数学式４によってレートマッチングを行うことができる。

In order to map to the resource elements, rate matching can be performed according to Equation 4 below.

従来のチャネルコーディングは、単一搬送波環境を仮定して具現されている。しかし、ＬＴＥ−Ａシステムのように多重搬送波手法が適用される場合、それぞれのコンポーネント搬送波に対応するＵＣＩ、すなわち、ＡＣＫ／ＮＡＣＫまたはＲＩデータがコンポーネント搬送波の順に結合されるのが一般的であるから、集成されるコンポーネント搬送波の個数分だけ、ＵＣＩのサイズも比例して増加することができる。特に、ＲＩの場合、既存の単一搬送波では最大３ビットの情報データサイズを有することができるが、５個のコンポーネント搬送波が集成可能な環境では、最大１５ビットまで情報データサイズを有することができる。したがって、現在具現されているＲＭコーディング手法では最大１１ビットの情報データを符号化できるので、多重搬送波環境におけるＵＣＩをデコーディングできる新しい手法が望まれる。以下では、符号化手法及びレートマッチング手法をＵＣＩのサイズによって区分して提案する。

Conventional channel coding is implemented assuming a single carrier environment. However, when the multi-carrier method is applied as in the LTE-A system, UCI corresponding to each component carrier, that is, ACK / NACK or RI data is generally combined in the order of the component carrier. The size of the UCI can be increased proportionally by the number of component carriers to be assembled. In particular, in the case of RI, an existing single carrier can have an information data size of up to 3 bits, but in an environment where five component carriers can be assembled, it can have an information data size of up to 15 bits. . Therefore, since the currently implemented RM coding method can encode information data of up to 11 bits, a new method capable of decoding UCI in a multi-carrier environment is desired. In the following, coding methods and rate matching methods are proposed according to UCI size.

<First embodiment-when the information data size is 11 bits or less>
In the case of RI or ACK / NACK having an information data size of 3 bits or more even in a single carrier environment or a multi-carrier environment, RM coding is used, so the encoded output data has a bit size of 32 bits. . However, when the channel state is very good, when calculating the number of resource elements using the mathematical formulas 1 and 2, only a very small number of resource elements may be allocated depending on the bit size of the information data. In such a case, a codeword encoded by RM coding at the rate matching stage performed by Equation 4 may be excessively punctured, resulting in performance degradation.

  Specifically, RI or ACK / NACK is not a modulation that uses all constellations for a codeword in which RI or ACK / NACK is encoded with RM coding for robust transmission regardless of channel conditions. Since transmission is performed using modulation that uses only the corner points of the constellation, it is common to map only 2 bits to one resource element. Therefore, a total of 16 resource elements are required to transmit a codeword encoded with 32 bits. If the calculated number of resource elements is smaller than 16, the rate matching with the codeword is performed. Will be applied as puncturing. However, in the case of puncturing, the receiving side may determine that an error has occurred. Therefore, even if the code word has 16 which is the maximum value of the minimum distance between codes of the RM code, the data for four symbols is punctured. If done, its performance cannot be guaranteed. In addition, since the puncturing is sequentially performed in units of 2 bits from the last bit in the code word in order to maintain the puncturing performance, the performance degradation may be further increased. Hereinafter, as a first embodiment of the present invention, a method for preventing performance degradation due to puncturing is proposed.

  1) In the first embodiment of the present invention, when ACK / NACK or RI has a specific number of information data sizes, that is, when it is information data having a size of 3 bits or more, it is assigned to ACK / NACK or RI. We propose to set a minimum value for the number of resource elements. For example, when the information data size of ACK / NACK or RI is 3 bits or more, the number of resource elements allocated to transmit this is set to a minimum of 16. Here, it is preferable that the minimum value of the number of resource elements allocated to ACK / NACK or RI is not less than half of the number of bits which is the information data size. That is, the number of REs allocated to ACK / NACK and RI, that is, the number of encoded modulation symbols, can be calculated as Equations 5 and 6 below.

ＡＣＫ／ＮＡＣＫまたはＲＩに割り当てられるリソース要素の個数に

To the number of resource elements allocated to ACK / NACK or RI

は、下記の数学式７のように定められることができる。

Can be defined as Equation 7 below.

ここで、

here,

は、ＡＣＫ／ＮＡＣＫまたはＲＩの情報データのビットサイズを表し、

Represents the bit size of ACK / NACK or RI information data,

は、変調次数によるシンボル当たりビットサイズを表し、ＱＰＳＫの場合は２、１６ＱＡＭの場合は４、６４ＱＡＭの場合は６である。

Represents the bit size per symbol depending on the modulation order, which is 2 for QPSK, 4 for 16QAM, and 6 for 64QAM.

  On the other hand, in the case of ACK / NACK and RI, the code rate standard of RM coding is 1/3. Therefore, the number of resource elements allocated to ACK / NACK or RI

は、下記の数学式８乃至数学式１０のように定められることができる。

Can be defined as Equation 8 to Equation 10 below.

下記の表４乃至表７は、上記の数学式７乃至数学式１０のそれぞれを用いてＡＣＫ／ＮＡＣＫまたはＲＩに割り当てられるリソース要素の個数に

Tables 4 to 7 below show the number of resource elements allocated to ACK / NACK or RI using each of Equations 7 to 10 above.

を求めた例である。

It is an example which calculated | required.

２）また、第１実施例では、ＡＣＫ／ＮＡＣＫまたはＲＩがＲＭコーディングで符号化された後、レートマッチング過程を通じてパンクチャリングされる場合、パンクチャリングを既に設定された特定順序で行うことも考慮することができる。具体的に、ＡＣＫ／ＮＡＣＫまたはＲＩを与えられた個数のリソース要素に割り当てる場合、１ビットまたは２ビット単位あるいは特定個数のビット単位にまとめて割当順序を定め、その順番でリソース要素に割り当てることができる。例えば、ＡＣＫ／ＮＡＣＫまたはＲＩが符号化された出力データが

2) Also, in the first embodiment, when ACK / NACK or RI is encoded by RM coding and then punctured through a rate matching process, it is also considered that puncturing is performed in a specific order that has already been set. be able to. Specifically, when ACK / NACK or RI is allocated to a given number of resource elements, the allocation order is determined in units of 1 bit or 2 bits or a specific number of bits, and allocated to the resource elements in that order. it can. For example, output data in which ACK / NACK or RI is encoded is

であれば、これを、パンクチャリング時に最適の性能を出すように既に設定された規則である

If this is the case, this is a rule that has already been set for optimal performance during puncturing.

を用いて再整列した後、パーミュテーションされた順序に従ってインデックス順にまたはインデックスの逆順に順次にリソース要素に割り当てたり、順次にパンクチャリングを行ったりすることができる。すなわち、８個の符号化された出力データがリソース要素に割り当てられる場合、割り当てられるデータは

After reordering using, resource elements can be assigned sequentially in the index order or the reverse order of the index according to the permuted order, or puncturing can be performed sequentially. That is, when 8 encoded output data are allocated to resource elements, the allocated data is

ではなく

not

になる。

become.

  3) In the first embodiment, the ACK / NACK and RI information data sizes differ from each other.

を使用することができる。ＲＭコーディング手法で符号化した出力データ、すなわち、コードワードをパンクチャリングする場合、その影響は情報データのビットサイズによって異なる。したがって、パンクチャリングによるコードワードの最小距離が影響を受ける度合いに応じて、異なる

Can be used. When the output data encoded by the RM coding method, that is, the code word is punctured, the influence varies depending on the bit size of the information data. Therefore, depending on the degree to which the minimum distance of codewords due to puncturing is affected

を設定することができる。例えば、コードワードをパンクチャリングする場合、最小距離が速く０になる情報データのビットサイズに対しては比較的大きい

Can be set. For example, when codewords are punctured, the bit distance of information data whose minimum distance is 0 quickly is relatively large.

を設定する。

Set.

  In the above processes 1) to 3), the minimum value of the number of resource elements allocated to UCI is set. To achieve the same purpose, the bit size of the encoded output data after rate matching is minimized. It is also possible to set a value. That is, in the above mathematical formula 5, the number of resource elements is

は、下記の数学式１１のように出力データのビットサイズ最小値に設定することができる。

Can be set to the minimum bit size of the output data as shown in the following mathematical formula 11.

<第２実施例−情報データサイズが１２ビット以上の場合>
ＡＣＫ／ＮＡＣＫとＲＩの情報データサイズが１２ビット以上の場合、ＰＵＳＣＨでは、情報データを同一のビットサイズあるいは異なるビットサイズである２つ以上のデータにグルーピングし、分けられたそれぞれの情報データをそれぞれ、ＰＵＳＣＨで使用する（３２，Ｏ）ＲＭコーディング手法を用いてチャネルコーディングすることができる。

<Second embodiment-When the information data size is 12 bits or more>
When the information data size of ACK / NACK and RI is 12 bits or more, in PUSCH, the information data is grouped into two or more data of the same bit size or different bit sizes, and each divided information data is respectively , Channel coding can be performed using the (32, O) RM coding technique used in PUSCH.

  That is, when UCI and data such as RI or ACK / NACK are multiplexed in a multi-carrier environment, UCI information data bits are divided into two or more groups of RI, and each group has one code. Can be encoded into words. In this case, when the bit size of the information data is 3 to 11 bits, the (32, O) RM coding method using Table 1 can be applied, so the bit size of the information data included in each group is 6 bits. In the case of 10 to 10 bits, the (32, O) RM coding method, that is, the dual RM coding method can be applied to each group. Hereinafter, a method for dividing information data into groups will be described first, a method for calculating the number of resource elements for allocating encoded information data when applying the dual (32, O) RM coding method, and rate matching A method of performing the above, that is, a coding chain will be described. A method of calculating the number of minimum resource elements that can be allocated per codeword when the dual (32, O) RM coding method is applied as in the first embodiment will be described.

1) Information data grouping method at the time of dual RM coding First, referring to FIGS. 18 and 19, a method of dividing information data of 12 bits or more into groups in order to apply the dual (32, O) RM coding method. I will explain.

  (1) FIG. 18 is a diagram for explaining a method of dividing information data into groups in order to apply the dual (32, O) RM coding method in the second embodiment of the present invention.

  Referring to FIG. 18, overall information data can be sequentially allocated as input data of each encoder used in the dual (32, O) RM coding method. For example, 12-bit

を２個のＲＭ符号器で符号化する場合、第一のＲＭ符号器に入力される情報データは、

Is encoded with two RM encoders, the information data input to the first RM encoder is:

において偶数番目の情報データである

Is even-numbered information data

の６ビットが割り当てられ、第二の（３２，Ｏ）ＲＭ符号器に入力される情報データは、奇数番目の情報データである６ビットの

6 bits are assigned, and the information data input to the second (32, O) RM encoder is the odd-numbered information data of 6 bits.

が割り当てられることができる。

Can be assigned.

  That is, given information data

の場合、ＲＭ符号器の入力データが

The input data of the RM encoder is

がそれぞれ第一のＲＭ符号器と第二のＲＭ符号器に入力されるとすれば、

Are input to the first RM encoder and the second RM encoder, respectively.

の関係が成立する。

The relationship is established.

  (2) FIG. 19 is a diagram for explaining another method of dividing information data into groups in order to apply the dual (32, O) RM coding method in the second embodiment of the present invention.

  Referring to FIG. 19, the information data input to the first RM encoder is assigned the first half of the entire information data, and the information data input to the second RM encoder is the rest of the entire information data. Half can be allocated. For example, 12-bit

を２個のＲＭ符号器で符号化する場合、第一のＲＭ符号器に入力される情報データは、６ビットの

Is encoded with two RM encoders, the information data input to the first RM encoder is a 6-bit

が割り当てられ、第二のＲＭ符号器に入力される情報データは、６ビットの

And the information data input to the second RM encoder is 6-bit

が割り当てられることができる。

Can be assigned.

  On the other hand, in both FIG. 18 and FIG.

が奇数である場合、第一のＲＭ符号器に入力される情報データは、

Is an odd number, the information data input to the first RM encoder is

が割り当てられ、第二のＲＭ符号器に入力される情報データは、

And the information data input to the second RM encoder is

が割り当てられることができる。または、第一のＲＭ符号器に入力される情報データは、

Can be assigned. Alternatively, the information data input to the first RM encoder is

が割り当てられ、第二のＲＭ符号器に入力される情報データは、

And the information data input to the second RM encoder is

が割り当てられるものとすることができる。

Can be assigned.

  (3) Information data corresponding to a main component carrier (primary CC) among component carriers can be set in one group, and information data corresponding to other component carriers can be divided into other groups. Here, the main component carrier may be the component carrier of the highest or lowest index, or may be an already set index. Alternatively, the component carrier with the best or worst channel condition can be set as the main component carrier. Further, the main component carrier can be set as the component carrier having the maximum or minimum bit size of the information data, and the main component carrier can be set in the same manner in terms of the coding rate and the modulation order.

2) Coding chain when applying the dual RM coding method
(1) Next, a method of calculating the number of resource elements for allocating encoded information data when applying the dual RM coding method is defined. In the present invention, when calculating the number of resource elements, the number of resource elements is calculated using Equation 1 and Equation 2 based on the bit size of the entire information data, not the information data bit size divided by group. Suggest to calculate. That is, when ACK / NACK and RI are encoded using a dual RM coding method, the number of resource elements allocated to each RM codeword is the number of given overall information data.

から計算されたリ、ソース要素の個数を均等に分けて割り当てる。

The number of re and source elements calculated from the above are equally divided and assigned.

  Therefore, given the whole information data

から計算されたリソース要素の

Of resource elements calculated from

が偶数である場合、デュアルＲＭコーディング手法によって生成された２つのコードワードのそれぞれに

Is an even number, each of the two codewords generated by the dual RM coding technique

のリソース要素が割り当てられることができる。

Resource elements can be allocated.

  Also, given the whole information data

から計算されたリソース要素の

Of resource elements calculated from

が奇数である場合、デュアルＲＭコーディング手法によって生成された１番目のコードワードに

Is odd, the first codeword generated by the dual RM coding technique

のリソース要素が割り当てられ、２番目のコードワードに

Resource elements are assigned to the second codeword

のリソース要素が割り当てられることができる。あるいは、１番目のコードワードに

Resource elements can be allocated. Or the first codeword

のリソース要素が割り当てられ、２番目のコードワードに

Resource elements are assigned to the second codeword

のリソース要素が割り当てられるものとすることができる。

Resource elements may be allocated.

  (2) However, in the rate matching stage using Equation 4, for each codeword generated by the dual RM coding method, as described in 2) above, the resources allocated to each codeword Depending on the number of elements and the modulation order, rate matching, that is, puncturing can be performed individually.

  (3) FIG. 20 is a diagram illustrating a coding chain in dual RM coding according to the second embodiment of the present invention.

  Referring to FIG. 20, the coding chain in the dual RM coding of the present invention will be described. The dual RM coding method proposed in the present invention is a method in which single resource element calculation and individual rate matching are combined.

  That is, when the information data size of ACK / NACK and RI is 12 bits or more, the dual (32, O) RM coding of the present invention is applied, and as described in 1), the entire information data is the first information data and Grouped into second information data.

  Next, as described in (1) of 2), the number of resource elements to be allocated is not based on the information data bit size divided for each group, but based on the bit size of the overall information data. After calculating the number, the codewords distributed to the respective RM encoders and output from the respective encoders are combined after being rate-matched according to the size of a given resource. Subsequently, an interleaver can be applied to the combined data, but the interleaver can be omitted in some cases.

3) A method for determining the number of minimum resource elements when applying the dual RM coding method On the other hand, in the dual RM coding method as well as in the first embodiment, the minimum number of resource elements allocated to UCI, that is, ACK / NACK or RI is minimized. It is necessary to set a value. Therefore, in the dual RM coding method of the present invention, the minimum value is the sum of the number of each minimum resource element of each grouped information data bit to the number of resource elements allocated to ACK / NACK and RI. Can be set to

  That is,

の情報データに対する最小リソース要素の個数を計算する数学式５乃至数学式７を簡略に

Mathematical formulas 5 to 7 for calculating the number of minimum resource elements for the information data are simplified

とすれば、デュアルＲＭコーディングでそれぞれのコードワードに割り当てられる最小リソース要素の個数を計算する式は

If so, the equation for calculating the number of minimum resource elements allocated to each codeword in dual RM coding is

になり、全体ＡＣＫ／ＮＡＣＫ及びＲＩに割り当てられる最小リソース要素の個数は

The number of minimum resource elements allocated to the entire ACK / NACK and RI is

になる。簡単な例として、１２ビットサイズの情報データに割り当てられる最小リソース要素の個数は、

become. As a simple example, the number of minimum resource elements allocated to 12-bit size information data is

ではなく

not

になる。

become.

  On the other hand, when the size of the information data is an odd number, the size of each group of information data used to calculate the number of the minimum resource elements is for the first codeword.

が、２番目のコードワードのために

But for the second codeword

が割り当てられることができる。また、１番目のコードワードのために

Can be assigned. Also for the first codeword

が、２番目のコードワードのために

But for the second codeword

が割り当てられることができる。この場合、全体ＡＣＫ／ＮＡＣＫ及びＲＩに割り当てられる最小リソース要素の個数は、

Can be assigned. In this case, the minimum number of resource elements allocated to the entire ACK / NACK and RI is

になる。例えば、１３ビットの情報データに対して計算される最小リソース要素の個数は

become. For example, the number of minimum resource elements calculated for 13-bit information data is

ではなく、

not,

になる。

become.

  Therefore, the above mathematical formula 7 can be changed to the following mathematical formulas 12 and 13.

数学式１２及び数学式１３を総合すると、下記の数学式１４のようになる。

When the mathematical formula 12 and the mathematical formula 13 are combined, the following mathematical formula 14 is obtained.

もし、全体情報データを

If the entire information data

のグループに区分してＲＭコーディング手法を個別的に適用し、それぞれのＲＭコーディング時に入力される情報データのサイズを

The RM coding method is applied to each group separately, and the size of the information data input at each RM coding is

とすれば、ＡＣＫ／ＮＡＣＫ及びＲＩに割り当てられる最小リソース要素の個数は

Then, the number of minimum resource elements allocated to ACK / NACK and RI is

になる。

become.

  on the other hand,

は、ＰＵＳＣＨ伝送がなされる伝送ブロックの変調次数のうち、低い変調次数とすることができる。すなわち、１番目の伝送ブロックの変調次数がＱＰＳＫであり、２番目のＴＢの変調次数が１６ＱＡＭであれば、

Can be a lower modulation order among the modulation orders of the transmission block in which PUSCH transmission is performed. That is, if the modulation order of the first transmission block is QPSK and the modulation order of the second TB is 16QAM,

は、両伝送ブロックの変調次数のうち、低い変調次数であるＱＰＳＫの値である２となる。または、

Is 2 which is the value of QPSK which is the lower modulation order among the modulation orders of both transmission blocks. Or

は、ＰＵＳＣＨ伝送がなされる伝送ブロックの変調次数値の平均とすることができる。すなわち、１番目の伝送ブロックの変調次数がＱＰＳＫであり、２番目の伝送ブロックの変調次数が１６ＱＡＭであれば、

Can be an average of modulation order values of transmission blocks in which PUSCH transmission is performed. That is, if the modulation order of the first transmission block is QPSK and the modulation order of the second transmission block is 16QAM,

は、両伝送ブロックの変調次数の平均である３となることができる。または、

Can be 3 which is the average of the modulation orders of both transmission blocks. Or

は、ＰＵＳＣＨ伝送がなされる伝送ブロックの変調次数のうち、高い変調次数とすることができる。すなわち、１番目の伝送ブロックの変調次数がＱＰＳＫであり、２番目の伝送ブロックの変調次数が１６ＱＡＭであれば、

Can be a higher modulation order among the modulation orders of a transmission block in which PUSCH transmission is performed. That is, if the modulation order of the first transmission block is QPSK and the modulation order of the second transmission block is 16QAM,

は、両伝送ブロックの変調次数のうち、高い変調次数である１６ＱＡＭの値である４となる。

Is 4 which is the value of 16QAM which is a higher modulation order among the modulation orders of both transmission blocks.

<Third embodiment-Method for mapping encoded information data to resource elements>
When the UCI encoded according to the first and second embodiments is mapped to the PUSCH, each encoded codeword is a virtual subcarrier (virtual carrier) in one resource element or a specific number of resource elements. ) Can be mapped in order.

  When sequentially mapping, encoded codewords are mapped in the direction in which the index increases from the virtual subcarrier of the lowest index. For example, in dual RM coding, the first codeword is mapped for each odd-numbered virtual subcarrier from the odd-numbered virtual subcarrier of the lowest index, and the even-numbered virtual subcarrier of the even-numbered virtual subcarrier of the lowest index. A second codeword can be mapped for each carrier.

  A method of mapping in time order is also possible. For example, when the allocated resource element corresponds to the second, fourth, ninth and eleventh symbols, the first codeword is mapped to the resource element corresponding to the second and ninth symbols, and the fourth and eleventh symbols. A second codeword can be mapped to the resource element corresponding to. Alternatively, the first codeword may be mapped to resource elements corresponding to two symbols, and the second codeword may be mapped to resource elements corresponding to the remaining symbols.

  FIG. 21 is a block diagram of a communication apparatus according to an embodiment of the present invention.

  Referring to FIG. 21, the communication device 2100 includes a processor 2110, a memory 2120, an RF module 2130, a display module 2140, and a user interface module 2150.

  The communication device 2100 is illustrated for convenience of explanation, and some modules can be omitted. The communication device 2100 can further include necessary modules. In addition, some modules in the communication device 2100 can be subdivided modules. The processor 2110 is configured to perform operations according to the embodiment of the present invention illustrated with reference to the drawings. Specifically, the detailed operation of the processor 2110 may be referred to the contents described in FIGS.

  The memory 2120 is connected to the processor 2110 and stores an operating system, applications, program codes, data, and the like. The RF module 2130 is connected to the processor 2110 and performs a function of converting a baseband signal into a radio signal or converting a radio signal into a baseband signal. For this, the RF module 2130 performs analog conversion, amplification, filtering and frequency up-conversion or vice versa. The display module 2140 is connected to the processor 2110 and displays various information. The display module 2140 may use well-known elements such as an LCD (Liquid Crystal Display), an LED (Light Emitting Diode), and an OLED (Organic Light Emitting Diode), but is not limited thereto. The user interface module 2150 is connected to the processor 2110 and may be configured with a combination of well-known user interfaces such as a keypad and a touch screen.

  In the embodiment described above, the constituent elements and features of the present invention are combined in a predetermined form. Each component or feature should be considered optional unless stated otherwise. Each component or feature can be implemented in a form that is not combined with other components or features. In addition, it is possible to configure an embodiment of the present invention by combining some components and / or features. The order of operations described in the embodiments of the present invention can be changed. Some configurations and features of one embodiment can be included in other embodiments, and can be replaced with corresponding configurations or features of other embodiments. It is obvious that claims that do not have an explicit citation relationship in the claims can be combined to constitute an embodiment, and can be included as a new claim by amendment after application.

  In this document, the embodiments of the present invention have been described mainly with respect to data transmission / reception relationships between the base station and the terminal. The specific operations described as being performed by the base station in this document may be performed by an upper node of the base station in some cases. That is, it is obvious that various operations performed for communication with a terminal in a network including a plurality of network nodes including a base station can be performed by a network node other than the base station or the base station. is there. 'Base station' may also be a term such as a fixed station, Node B, eNode B (eNB), access point. Further, 'terminal' may be a term such as UE (User Equipment), MS (Mobile Station), MSS (Mobile Subscriber Station).

  Embodiments according to the present invention can be implemented by various means such as hardware, firmware, software, or a combination thereof. In the case of implementation by hardware, one embodiment of the present invention includes one or more ASICs (application specific integrated circuits), DSPs (digital signal processing), DSPDs (digital signal processing), DSPs (digital signal processing), DSPs (digital signal processing). , FPGAs (Field Programmable Gate Arrays), processors, controllers, microcontrollers, microprocessors, and the like.

  In the case of implementation by firmware or software, an embodiment of the present invention may be in the form of a module, procedure, function, or the like that performs the functions or operations described above. The software code can be stored in the memory unit and driven by the processor. The memory unit is provided inside or outside the processor, and can exchange data with the processor by various known means.

  It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the characteristics of the present invention. Accordingly, the above detailed description should not be construed as limiting in any respect and should be considered as exemplary. The scope of the invention should be determined by reasonable analysis of the appended claims, and all changes that come within the equivalent scope of the invention are included in the scope of the invention.

  As mentioned above, although this invention has been illustrated using preferable embodiment of this invention, this invention should not be limited and limited to this embodiment. It is understood that the scope of the present invention should be construed only by the claims. It is understood that those skilled in the art can implement an equivalent range based on the description of the present invention and the common general technical knowledge from the description of specific preferred embodiments of the present invention.

The present invention can be applied to a wireless communication system. Specifically, the present invention can be applied to a wireless mobile communication device used for a cellular system.

Claims (14)

A method for transmitting information data by using the RM (Reed-Muller) code proposed method in a wireless communication system,
The method
Number of resource elements for transmitting the information data

The bit size of the information data

Set based on
Bit size of the information data

If There is number than the already set and to divide the information data in the first information data and second information data,
By applying the RM coding techniques, and be separately encodes each of the first information data and the second information data,
The set number

Resource element of the first number for the first information data

Resource elements and a second number for the second information data

Evenly allocate to the resource elements of
The size of the encoded first information data is the first number of resource elements.

Rate matching to support
The size of the encoded second information data is the second number of resource elements.

Rate matching to support
Concatenating the rate matched first information data and the rate matched second information data;
The number

Using the resource elements and transmitting the first information data and second information data the connecting method. The size of the first information data

Is

Corresponding to the bit ,
Size of the second information data

Is

The method of claim 1 , corresponding to a bit. The already set number corresponds to 12 bits,
Each bit size of the second information data first information data and the coding is the coding corresponds to the 32-bit A method according to claim 1. The information data corresponds to uplink control information (UC I) ,
It said uplink control information is transmitted through an uplink shared channel, The method of claim 1. The uplink control information, HARQ (Hybrid Automatic Retransmission reQuest) -ACK / NACK containing (Acknowledgment / Negative Acknowledgment) data or RI (Rank Indicator), The method of claim 4. Number of resource elements

If There is even, the first number of resource elements

Said second number of resource elements and

Respectively

It corresponds to A method according to claim 1. Number of resource elements

Is odd,
Said first number of resource elements

Is

Corresponding to
Said second number of resource elements

Is

It corresponds to A method according to claim 1. A transmission device of a wireless communication system,
The transmission device includes a processor and a transmission module,
The processor is
Number of resource elements for transmitting information data

The bit size of the information data

And it is set on the basis of,
Bit size of the information data

Is equal to or more than the preset number, dividing the information data into first information data and second information data ;
By applying RM coding techniques, and be separately encodes each of the first information data and the second information data,
The set number

Resource element of the first number for the first information data

Resource elements and a second number for the second information data

Evenly allocate to the resource elements of
The size of the encoded first information data is the first number of resource elements.

Rate matching to support
The size of the encoded second information data is the second number of resource elements.

Rate matching to support
Concatenating the rate matched first information data and the rate matched second information data;
Is configured to run
The transmission module includes:
The number

A transmission device configured to transmit the concatenated first information data and second information data using a resource element . The size of the first information data

Is

Corresponding to the bit,
Size of the second information data

Is

The transmission device according to claim 8 , which corresponds to a bit. The already set number corresponds to 12 bits,
The transmission apparatus according to claim 8 , wherein a bit size of each of the encoded first information data and the encoded second information data corresponds to 32 bits. The information data corresponds to uplink control information (UC I) ,
It said uplink control information is transmitted through an uplink shared channel transmitting device according to claim 8. The uplink control information, HARQ (Hybrid Automatic Retransmission reQuest) -ACK / NACK containing (Acknowledgment / Negative Acknowledgment) data or RI (Rank Indicator), the transmission device according to claim 11. Number of resource elements

If There is even, the first number of resource elements

Said second number of resource elements and

Respectively

The transmission device according to claim 8 , corresponding to . Number of resource elements

Is odd,
Said first number of resource elements

Is

Corresponding to
Said second number of resource elements

Is

The transmission device according to claim 8 , corresponding to .

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