KR101667811B1 - Method of composing uplink control channel in wireless communication system - Google Patents

Abstract

A method for configuring an uplink control channel in a wireless communication system is provided. The method includes dividing an uplink radio resource having a plurality of symbols and a plurality of subcarriers into a plurality of feedback mini-tiles (FMT) having two consecutive subcarriers, (RFMT), and configures a feedback channel with a plurality of consecutive re-arranged feedback mini-tiles. Frequency diversity can be obtained by constructing a feedback channel using distributed radio resources.

Wireless, communications, resources, feedback

Description

TECHNICAL FIELD [0001] The present invention relates to a method of configuring an uplink control channel in a wireless communication system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to wireless communication, and more particularly, to a method of configuring an uplink control channel in a wireless communication system.

The Institute of Electrical and Electronics Engineers (IEEE) 802.16e standard is a sixth standard for IMT (International Mobile Telecommunication) -2000 in ITU-R (ITU-R) under ITU (International Telecommunication Union) OFDMA TDD '. ITU-R is preparing the IMT-Advanced system as the next generation 4G mobile communication standard after IMT-2000. The IEEE 802.16 Working Group (WG) decided at the end of 2006 to implement the 802.16m project with the goal of creating an amendment specification for the existing IEEE 802.16e as a standard for the IMT-Advanced system. As can be seen from the above objectives, the 802.16m standard contains two aspects: the continuity of the past as a modification of the 802.16e standard and the future continuity of the specifications for the next generation IMT-Advanced system. Accordingly, the 802.16m standard requires that all the advanced requirements for the IMT-Advanced system be satisfied while maintaining compatibility with the Mobile WiMAX system based on the 802.16e standard.

One of the systems considered in the next generation wireless communication system is an Orthogonal Frequency Division Multiplexing (OFDM) system capable of attenuating the inter-symbol interference (ISI) effect with low complexity. The OFDM converts data symbols input in series into N parallel data symbols, and transmits the data symbols on separate N subcarriers. The subcarriers maintain orthogonality at the frequency dimension. Each orthogonal channel experiences mutually independent frequency selective fading, and the interval of transmitted symbols becomes longer, so that inter-symbol interference can be minimized. Orthogonal frequency division multiple access (OFDMA) refers to a multiple access method in which a part of subcarriers available in a system using OFDM as a modulation scheme is independently provided to each user to realize multiple access. OFDMA provides a frequency resource called a subcarrier to each user, and each frequency resource is provided independently to a plurality of users and is not overlapped with each other. Consequently, frequency resources are allocated mutually exclusively for each user.

Frequency diversity for multiple users can be obtained through frequency selective scheduling in an OFDMA system and subcarriers can be allocated in various forms according to a permutation scheme for subcarriers. And the efficiency of spatial domain can be improved by spatial multiplexing technique using multiple antennas.

There is a need for a method for efficiently constructing an uplink control channel in order to obtain frequency diversity when transmitting an uplink control signal.

SUMMARY OF THE INVENTION The present invention provides a method of configuring an uplink control channel in a wireless communication system.

In one aspect, a method for configuring an uplink control channel in a wireless communication system is provided. The method includes dividing an uplink radio resource having a plurality of symbols and a plurality of sub-carriers into a plurality of feedback mini-tiles (FMTs) having two consecutive sub-carriers, and re-arranging the plurality of feedback mini-tiles Selecting a feedback mini- tile (RFMT), and constructing a feedback channel with a plurality of consecutive re-arranged feedback mini-tiles. In addition, the reordering feedback mini-tiles constituting the feedback channel are divided into a plurality of HARQ mini-tiles (HMTs), and reordering HARQ mini tiles (RHMTs) from the plurality of HARQ mini tiles HARQ Mini-Tile), and configuring an HARQ feedback channel with a plurality of consecutive rearranged HARQ mini-tiles.

Frequency diversity can be obtained by constructing a feedback channel using distributed radio resources.

The following description will be made on the assumption that the present invention is applicable to a CDMA system such as 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 And can be used in various wireless communication systems. CDMA may be implemented in radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. The TDMA may be implemented in a wireless technology such as Global System for Mobile communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA may be implemented in wireless technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and Evolved UTRA (E-UTRA). IEEE 802.16m is an evolution of IEEE 802.16e, providing backward compatibility with systems based on IEEE 802.16e. UTRA is part of the Universal Mobile Telecommunications System (UMTS). The 3rd Generation Partnership Project (3GPP) LTE (Long Term Evolution) is a part of E-UMTS (Evolved UMTS) using Evolved-UMTS Terrestrial Radio Access (E-UTRA). It adopts OFDMA in downlink and SC -FDMA is adopted. LTE-A (Advanced) is the evolution of 3GPP LTE.

For clarity of description, IEEE 802.16m is mainly described, but the technical idea of the present invention is not limited thereto.

1 shows a wireless communication system. The wireless communication system 10 includes at least one base station 11 (BS). Each base station 11 provides a communication service to a specific geographical area (generally called a cell) 15a, 15b, 15c. The cell may again be divided into multiple regions (referred to as sectors). A user equipment (UE) 12 may be fixed or mobile and may be a mobile station, a mobile terminal, a user terminal, a subscriber station, a wireless device, a PDA The base station 11 generally refers to a fixed station that communicates with the terminal 12, and may be referred to as a " mobile station " an eNB (evolved-NodeB), a base transceiver system (BTS), an access point, and the like.

This technique can be used for a downlink or an uplink. Generally, downlink refers to communication from the base station 11 to the terminal 12, and uplink refers to communication from the terminal 12 to the base station 11. In the downlink, the transmitter may be part of the base station 11, and the receiver may be part of the terminal 12. In the uplink, the transmitter may be part of the terminal 12 and the receiver may be part of the base station 11.

Fig. 2 shows an example of a frame structure.

Referring to FIG. 2, a superframe (SF) includes a superframe header (SFH) and four frames (F0, F1, F2, F3). The size of each super frame is 20 ms, and the size of each frame is 5 ms. However, the present invention is not limited to this. The superframe header can be placed first in the superframe, and is assigned a common control channel. The common control channel is a channel used for transmitting control information that can be commonly used by all terminals in a cell, such as information on frames constituting a super frame or system information.

One frame includes a plurality of subframes (subframes SF0, SF1, SF2, SF3, SF4, SF5, SF6, SF7). Each subframe may be used for uplink or downlink transmission. The subframe may be composed of 5, 6, 7 or 9 OFDM symbols, but this is only an example and the number of OFDM symbols included in the subframe is not limited. A TDD (Time Division Duplexing) scheme or an FDD (Frequency Division Duplexing) scheme may be applied to the frame. In the TDD scheme, each subframe is used for uplink transmission or downlink transmission at different times at the same frequency. That is, the subframes in the TDD frame are divided into the uplink subframe and the downlink subframe in the time domain. In the FDD scheme, each subframe is used for uplink transmission or downlink transmission at different frequencies of the same time. That is, subframes in a frame of the FDD scheme are divided into an uplink subframe and a downlink subframe in the frequency domain. The uplink transmission and the downlink transmission occupy different frequency bands and can be performed at the same time.

The subframe includes at least one frequency partition. The frequency partition is composed of at least one physical resource unit (PRU). The frequency partition may include a Localized PRU and / or a Distributed PRU. The frequency block may be used for other purposes such as fractional frequency reuse (FFR) or Multicast and Broadcast Services (MBS).

A PRU is defined as a basic physical unit for resource allocation that includes a plurality of consecutive OFDM symbols and a plurality of consecutive subcarriers. The number of OFDM symbols included in the PRU may be equal to the number of OFDM symbols included in one subframe. For example, when one subframe is composed of 6 OFDM symbols, the PRU can be defined as 18 subcarriers and 6 OFDM symbols. A logical resource unit (LRU) is a basic logical unit for distributed resource allocation and localized resource allocation. The LRU is defined as a plurality of OFDM symbols and a plurality of subcarriers, and includes pilots used in the PRU. Therefore, the number of suitable subcarriers in one LRU depends on the number of allocated pilots.

A Logical Distributed Logical Resource Unit (DRU) may be used to obtain frequency diversity gain. The DRU includes subcarrier groups distributed in one frequency band. The size of the DRU is equal to the size of the PRU. The minimum unit forming the DRU is one subcarrier.

A logical logical resource unit (CRU) may be used to obtain a frequency selective scheduling gain. The CRU includes a local subcarrier group. The size of the CRU is equal to the size of the PRU.

The control channel is designed in consideration of the following points.

(1) The plurality of tiles included in the control channel may be dispersed in a time domain or a frequency domain to obtain a frequency diversity gain. For example, considering that the DRU includes three tiles consisting of six contiguous sub-carriers on six OFDM symbols, the control channel includes three tiles and each tile may be distributed in the frequency domain or time domain have. Or the control channel may include at least one tile, and the tile may be composed of a plurality of mini tiles so that a plurality of mini tiles may be dispersed in a frequency domain or a time domain. For example, the mini-tiles may be composed of (OFDM symbol x subcarrier) = 6 x 6, 3 x 6, 2 x 6, 1 x 6, 6 x 3, 6 x 2, 6 x 1, Assuming that a control channel including a tile of a PUSC structure of IEEE 802.16e (OFDM symbol x subcarrier) = 3 x 4 and a control channel including a mini-tile are multiplexed by a frequency division multiplexing (FDM) scheme, (OFDM symbol x subcarrier) = 6 x 2, 6 x 1, and so on. Considering only the control channel including the mini-tiles, the mini-tiles can be configured as (OFDM symbol x subcarrier) = 6 x 2, 3 x 6, 2 x 6, 1 x 6, and so on.

(2) In order to support high-speed terminals, the number of OFDM symbols constituting the control channel should be minimized. For example, in order to support a mobile station moving at 350 km / h, the number of OFDM symbols constituting the control channel is preferably 3 or less.

(3) The transmission power per symbol of the UE is limited. In order to increase the transmission power per symbol of the UE, the greater the number of OFDM symbols constituting the control channel, the more advantageous it is. Therefore, the number of appropriate OFDM symbols should be determined considering the transmission power per symbol of the high speed terminal of (2) and the terminal of (3).

(4) For coherent detection, pilot subcarriers for channel estimation should be uniformly distributed in a time domain or a frequency domain. Coherent detection is a method of estimating channel estimation using a pilot and then obtaining data on data subcarriers. For power boosting of the pilot subcarriers, the number of pilots per OFDM symbol of the control channel must be equal to maintain the transmission power per symbol equal.

(5) For non-coherent detection, the control signal must be composed or spread in an orthogonal code / sequence or a semi-orthogonal code / sequence.

The uplink control channel of the IEEE 802.16m system includes a Fast Feedback Channel (FFBCH), a Hybrid Automatic Repeat Request (HARQ) feedback control channel (HFBCH), a sounding channel, A ranging channel, a bandwidth request channel (BRCH), and the like.

The fast feedback channel carries feedback of CQI and / or MIMO information. There are two types of feedback channels: a primary fast feedback channel (PFBCH) and a secondary fast feedback channel (SFBCH). The primary fast feedback channel carries 4 to 6 bits of information and provides wideband CQI and / or MIMO feedback. The secondary fast feedback channel carries 7 to 24 bits of information and provides narrowband CQI and / or MIMO feedback. The secondary fast feedback channel can support more control information bits using a higher code rate. The primary fast feedback channel supports non-coherent detection without using a reference signal and the secondary fast feedback channel supports coherent detection using a reference signal. The fast feedback channel may be assigned to a predetermined location defined in the broadcast message. The fast feedback channel may be periodically allocated to the UE. Feedback information of a plurality of terminals can be multiplexed and transmitted through time division multiplexing (TDM), frequency division multiplexing (FDM), and code division multiplexing (CDM) through a fast feedback channel. The fast feedback channel in which the ACK / NACK signal is transmitted in response to the data to which the HARQ scheme is applied may start at a predefined offset from the data transmission.

 The HARQ feedback channel is a channel for transmitting ACK (Acknowledgment) / NACK (Non-acknowledgment) signals in response to data transmission. The fast feedback channel, the bandwidth request channel, the HARQ feedback channel, and the like may be located anywhere in the uplink subframe or frame.

The bandwidth request channel is a channel for requesting radio resources for transmitting uplink data or control signals to be transmitted by the UE. The HARQ feedback channel is a channel for transmitting ACK (Acknowledgment) / NACK (Non-acknowledgment) signals in response to data transmission.

3 shows an example of a resource unit used for an uplink control channel. A resource unit 100 is a resource allocation unit used for transmission of an uplink control channel and is also referred to as a tile. The tile 100 may be a physical resource allocation unit or a logical resource allocation unit. The control channel includes at least one tile 100 and the tile 100 is composed of at least one subcarrier in the frequency domain on at least one OFDM symbol in the time domain. The tile 100 refers to a bundle of a plurality of subcarriers adjacent in a time domain and a frequency domain. The tile 100 includes a plurality of data subcarriers and / or pilot subcarriers. A sequence of control signals may be mapped to data subcarriers, and a pilot for channel estimation may be mapped to pilot subcarriers.

The tile 100 includes three mini units 110, 120, and 130. Mini units are also called mini tiles. The tile 100 may be composed of a plurality of mini-tiles, and the mini-tiles may be composed of at least one sub-carrier in the frequency domain on at least one OFDM symbol in the time domain. Each of the mini-tiles 110, 120, and 130 includes two contiguous subcarriers over six orthogonal frequency division multiplexing (OFDM) symbols. The mini-tiles 110, 120, and 130 in the tile 100 may not be adjacent to each other in the frequency domain. At least one mini tile of another tile may be disposed between the first mini tile 110 and the second mini tile 120 and / or between the second mini tile 120 and the third mini tile 130 . Frequency diversity can be obtained by dispersively arranging the mini tiles 310, 320, and 330 in the tile 300 in the frequency domain.

The number of OFDM symbols in the time domain included in the mini-tile and / or the number of subcarriers in the frequency domain is only an example, and is not a limitation. The number of OFDM symbols included in the mini-tile may vary depending on the number of OFDM symbols included in the subframe. For example, if the number of OFDM symbols included in one subframe is six, the number of OFDM symbols included in the mini tile may be six.

The OFDM symbol refers to a duration in the time domain and is not limited to a system based on OFDM / OFDMA. This may be referred to as another name such as a symbol period, and the technical idea of the present invention is not limited to a specific multiple access scheme by the name of an OFDM symbol. In addition, a subcarrier denotes an allocation unit in the frequency domain. In this case, one subcarrier is used as a unit, but a subcarrier aggregation unit can be used.

The resource unit of FIG. 3 may be used as a resource unit of the feedback channel. That is, the feedback channel may be composed of three mini-tiles of 2x6 size. The feedback channel may be configured by allocating a DRU among logical resources. One DRU may be composed of three distributed tiles of 6x6 size, and the tiles may be further divided into three adjacent mini tiles of 2x6 size. The mini-tile is a feedback mini-tile (FMT) in that it is a resource unit used for a feedback channel.

On the other hand, the three feedback mini-tiles constituting the feedback channel need to be dispersed on the frequency in order to obtain the frequency diversity. Therefore, feedback mini-tiles in one tile classified on the DRU can not be directly allocated to the resources of the feedback channel, and it is necessary to construct a feedback channel by combining feedback mini-tiles of different tiles. That is, it is necessary to change the order of the feedback mini-tiles in the DRU and allocate them to the feedback channel.

Hereinafter, an uplink control channel configuration method proposed by the present invention will be described as an example.

FIG. 4 illustrates an exemplary method for configuring an uplink control channel according to the present invention.

In step S200, the uplink radio resource is divided into a plurality of feedback mini-tiles. The uplink radio resource may include at least one DRU. One DRU is composed of three distributed 6x6 sized tiles, which are composed of three adjacent 2x6 feedback mini-tiles. The feedback minitile may be indexed in order from the front of the radio resource.

In step S210, a reordering feedback mini-tile (RFMT) is selected from the plurality of feedback mini-tiles. The rearranged feedback mini-tile is a feedback mini- tile obtained by re-indexing the index of the indexed feedback mini-tile.

In step S220, the feedback channel is configured by three adjacent rearranged feedback mini-tiles among the rearranged feedback mini-tiles.

And transmits a feedback message through the feedback channel in step S230.

5 is an example of a feedback channel configuration according to the method proposed by the present invention. This embodiment can be used as a configuration of a feedback channel of Mzone mode using only the 802.16m system. The rearranged feedback mini-tiles constituting the feedback channel can be determined by the following equation (1).

은 s를 3으로 나눈 수보다 작은 최대의 정수를 나타내며, mod(s,3)은 s를 3으로 나눈 나머지를 나타낸다. 즉, 하나의 피드백 채널은 하나의 DRU를 구성하는 분산된 3개의 타일로부터 상기 수학식 1에 의해 각각 선택된 3개의 피드백 미니 타일의 조합으로 구성될 수 있다.In Equation (1), RFMT (s, n) (where n is 0, 1, or 2) represents the n-th feedback mini-tile of the s-th feedback channel among the plurality of feedback channels.

Represents the largest integer less than s divided by 3, and mod (s, 3) represents the remainder of dividing s by 3. That is, one feedback channel may be composed of a combination of three feedback mini-tiles each selected by the equation (1) from three distributed tiles constituting one DRU.

6 is another example of the feedback channel configuration by the method proposed in the present invention. The present embodiment can be applied to an 802.16m system and an 802.16e system by applying an FDM scheme and a feedback channel of a Lzone mode applying PUSC (Partial Usage of Subchannels). The rearranged feedback mini-tiles constituting the feedback channel can be determined by Equation (2) below.

은 s를 2로 나눈 수보다 작은 최대의 정수를 나타내며, mod(s,2)는 s를 2로 나눈 나머지를 나타낸다. 즉, 하나의 피드백 채널은 하나의 DRU를 구성하는 분산된 6개의 타일로부터 상기 수학식 2에 의해 선택된 3개의 피드백 미니 타일의 조합으로 구성될 수 있다. In Equation (2), RFMT (s, n) (where n is 0, 1, or 2) represents the n-th feedback mini-tile of the s-th feedback channel among the plurality of feedback channels.

(S, 2) represents the remainder obtained by dividing s by 2, where mod (s, 2) represents the largest integer less than s divided by two. That is, one feedback channel may be composed of a combination of three feedback mini-tiles selected by the equation (2) from six distributed tiles constituting one DRU.

Meanwhile, the HARQ feedback channel for transmitting HARQ may be transmitted by allocating a feedback mini-tile. One feedback channel can transmit six HARQ feedback channels, and the radio resource of the feedback channel configured by the proposed method can be used. The HARQ feedback channel may start on a bandwidth request channel on the radio resource.

7 shows another example of the uplink control channel configuration method according to the present invention.

In step S300, the feedback channel composed of the three rearranged feedback mini-tiles is again divided into three HARQ mini-tiles. Since one re-arrangement feedback mini-tile has a size of 2x6, one HARQ mini-tile has a size of 2x2. The HARQ minitiles may be indexed in order from the front of the radio resource, or may be indexed for each reordered feedback minitile.

In step S310, a reordering HARQ mini-tile (RHMT) is selected from the plurality of HARQ mini-tiles. The rearrangement HARQ mini-tile is a feedback mini-tile obtained by re-indexing the index of the indexed HARQ mini-tiles.

In step S320, an HARQ feedback channel is configured with three rearranged HARQ mini-tiles among the rearranged HARQ mini-tiles.

And transmits an HARQ message through the HARQ feedback channel in step S330.

8 is an example of a HARQ feedback channel configuration according to the method proposed by the present invention. The present embodiment can be applied to a case where two HARQ feedback channels are code division multiplexed (CDM) in a 2 × 2 HARQ mini-tile. The rearranged HARQ mini-tiles constituting the HARQ feedback channel can be determined by Equation (3) below.

이며,

는 k를 2로 나눈 몫보다 작은 최대의 정수를 나타낸다.

는 k'를 3으로 나눈 몫보다 작은 최대의 정수를 나타내며, mod(k'+m,3)은 k'+m을 3으로 나눈 나머지를 나타낸다. 즉 하나의 HARQ 피드백 채널은 HARQ 피드백을 위해 할당된 재배열 피드백 미니 타일로부터 상기 수학식 3에 의해 선택된 3개의 HARQ 피드백 미니 타일의 조합으로 구성될 수 있다.In Equation (3), HMT (k, m) (where m is one of 0, 1, and 2) represents an m-th HARQ mini-tile of the k-th HARQ feedback channel among a plurality of HARQ feedback channels.

Lt;

Represents the largest integer less than the quotient of k divided by 2.

Mod (k '+ m, 3) represents the remainder obtained by dividing k' + m by 3, and mod (k '+ m, 3) represents the largest integer smaller than the quotient obtained by dividing k' by 3. That is, one HARQ feedback channel may be composed of a combination of the three HARQ feedback mini-tiles selected by Equation (3) from the rearranged feedback mini-tiles allocated for HARQ feedback.

9 is another example of the HARQ feedback channel configuration according to the method proposed by the present invention. The rearranged HARQ mini-tiles constituting the HARQ feedback channel can be determined by Equation (4) below.

In Equation (4), RHMT (n, k) (where n is 0, 1, or 2) represents the n-th HARQ mini-tile of the k-th HARQ feedback channel among the plurality of HARQ feedback channels. (n + k) mod K represents the remainder of dividing n + k by K; K denotes the number of HARQ feedback channels included in one feedback channel. That is, one HARQ feedback channel may be configured by selecting one HARQ mini-tile from each of the three rearranged feedback mini-tiles constituting one feedback channel.

Meanwhile, if the HARQ feedback channel of each terminal is code division multiplexed in the HARQ mini-tile, since multiple terminals can be allocated the same HARQ mini-tile, the terminal needs to instruct the CDM code or its order separately.

10 is a block diagram illustrating a terminal in which an embodiment of the present invention is implemented.

The terminal 900 includes a processor 910 and an RF unit 920. Processor 910 implements the proposed functionality, process and / or method.

The processor 910 divides the uplink radio resource having a plurality of symbols and a plurality of subcarriers into a plurality of feedback mini-tiles having two consecutive sub-carriers, selects a rearranged feedback mini-tile from the plurality of feedback mini-tiles , And constitutes a feedback channel with a plurality of continuous rearrangement feedback mini-tiles. The RF unit 920 is coupled to the processor 910 to transmit and / or receive wireless signals.

Processor 910 may include an application-specific integrated circuit (ASIC), other chipset, logic circuitry, and / or data processing device. RF section 920 may include a baseband circuit for processing radio signals. When the embodiment is implemented in software, the above-described techniques may be implemented with modules (processes, functions, and so on) that perform the functions described above. The module may be executed by the processor 910.

In the above-described exemplary system, the methods are described based on a flowchart as a series of steps or blocks, but the present invention is not limited to the order of steps, and some steps may be performed in a different order Lt; / RTI > It will also be understood by those skilled in the art that the steps shown in the flowchart are not exclusive and that other steps may be included or that one or more steps in the flowchart may be deleted without affecting the scope of the invention.

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

1 shows a wireless communication system.

Fig. 2 shows an example of a frame structure.

3 shows an example of a resource unit used for an uplink control channel.

FIG. 4 illustrates an exemplary method for configuring an uplink control channel according to the present invention.

5 is an example of a feedback channel configuration according to the method proposed by the present invention.

6 is another example of the feedback channel configuration by the method proposed in the present invention.

7 shows another example of the uplink control channel configuration method according to the present invention.

8 is an example of a HARQ feedback channel configuration according to the method proposed by the present invention.

9 is another example of the HARQ feedback channel configuration according to the method proposed by the present invention.

10 is a block diagram illustrating a terminal in which an embodiment of the present invention is implemented.

Claims (7)

In a wireless communication system, (UL) radio resource having a plurality of symbols and a plurality of sub-carriers in a frame into a plurality of feedback mini-tiles (FMTs) having two consecutive sub-carriers, Selecting a reordering feedback mini-tile (RFMT) from the plurality of feedback mini-tiles, Constructing a feedback channel with a plurality of consecutive re-arranged feedback mini-tiles, If the frame supports only IEEE (Institute of Electrical and Electronics Engineers) 802.16m system, the rearranged feedback mini-tile is selected by the following equation,

However, RFMT (s, n) (where n is 0, 1, or 2) represents the n-th feedback mini-tile of the s-th feedback channel.

Represents the largest integer less than the quotient of s divided by 3, and mod (s, 3) represents the remainder of dividing s by 3, Wherein when the frame supports both the IEEE 802.16m system and the IEEE 802.16e system, the rearranged feedback mini-tile is selected according to the following equation.

However, RFMT (s, n) (where n is 0, 1, or 2) represents the n-th feedback mini-tile of the s-th feedback channel.

Represents the largest integer less than s divided by 2, and mod (s, 2) represents the remainder of dividing s by 2. delete delete The method according to claim 1, Dividing the rearranged feedback mini-tiles constituting the feedback channel into a plurality of HARQ mini-tiles (HMTs) Selecting a rearrangement HARQ mini-tile (RHMT) from the plurality of HARQ mini-tiles, Further comprising configuring a HARQ feedback channel with a plurality of consecutive HARQ MINI tiles of the rearranged HARQ. 5. The method of claim 4, And selecting the rearranged HARQ mini-tile according to the following equation.

However, HMT (k, m) represents m (where m is 0, 1, 2) th HARQ mini-tiles of the k-th HARQ feedback channel.

Lt;

Is the largest integer less than the quotient of k divided by 2,

Represents the largest integer less than the quotient of k 'divided by three. 5. The method of claim 4, And selecting the rearranged HARQ mini-tile according to the following equation.

Note that RHMT (n, k) represents the kth HARQ minitile of n (where n is one of 0, 1, or 2) feedback minitiles. And K represents the number of HARQ feedback channels included in the feedback channel. A transmitter in a wireless communication system, A radio frequency (RF) unit configured to transmit or receive a radio signal; And And a processor coupled to the RF unit, The processor comprising: (UL) radio resource having a plurality of symbols and a plurality of sub-carriers in a frame into a plurality of feedback mini-tiles (FMT) having two consecutive sub- Selecting a reordering feedback mini-tile (RFMT) from the plurality of feedback mini-tiles, Configured to construct a feedback channel with a plurality of consecutive re-arranged feedback mini-tiles, If the frame supports only IEEE (Institute of Electrical and Electronics Engineers) 802.16m system, the rearranged feedback mini-tile is selected by the following equation,

However, RFMT (s, n) (where n is 0, 1, or 2) represents the n-th feedback mini-tile of the s-th feedback channel.

Represents the largest integer less than the quotient of s divided by 3, and mod (s, 3) represents the remainder of dividing s by 3, Wherein if the frame supports both an IEEE 802.16m system and an IEEE 802.16e system, the rearranged feedback mini-tile is selected by the following equation.

However, RFMT (s, n) (where n is 0, 1, or 2) represents the n-th feedback mini-tile of the s-th feedback channel.

Represents the largest integer less than s divided by 2, and mod (s, 2) represents the remainder of dividing s by 2.

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