JP2008526091A - Signal communication with non-coherent detection in broadband wireless access systems - Google Patents

Abstract

A method for allocating radio resources in a radio communication system using orthogonal frequency division multiplexing (OFDM) is provided.
Receiving data associated with a radio resource allocation map from a base station at a mobile station;
Transferring an uplink channel from the mobile station to the base station, wherein the radio allocation map includes a control parameter for transferring the uplink channel, and the uplink channel includes n One or more OFDM tiles including a first set of subcarriers associated with representing at least a portion of the bit data payload and a second set of subcarriers associated with representing at least a portion of the non-pilot m-bit data payload Each subcarrier carries modulated data, and the first and second sets of subcarriers are mutually exclusive.
[Selection] Figure 1

Description

  The present invention relates to communication of non-coherently detectable signals that can be used in broadband wireless access systems, and in particular, orthogonal frequency division multiplexing (OFDM) access systems.

  In order to allow a plurality of users to use limited radio resources at the same time, a multiplexing method is required. Multiplexing techniques divide a single line or transfer path into multiple channels that can simultaneously transmit / receive individual independent signals. For example, a frequency division multiplexing (FDM) technique for signal multiplexing by dividing a single line into a plurality of frequency bands, and signal multiplexing by dividing a single line into a plurality of very short time intervals There are various multiplexing techniques, such as a time division multiplexing (TDM) technique for performing.

  Currently, with increasing demand for multimedia data in mobile communications, a multiplexing method for efficiently transferring a large amount of data is required. A representative multiplexing method is an orthogonal frequency division multiplexing (OFDM) method.

  The OFDM method refers to a digital modulation method that can improve the transfer rate per bandwidth and prevent multipath interference. The OFDM method is characterized in that it functions as a multiple subcarrier modulation method using a plurality of subcarriers orthogonal to each other. Therefore, even if the frequency components of the individual subcarriers overlap each other, there is no problem with the OFDM technique. The OFDM technique can multiplex more subcarriers than a general frequency division multiplexing (FDM) technique. Therefore, high frequency use efficiency is realized.

  The mobile communication system based on the above-described OFDM method currently uses various multiple access methods capable of allocating radio resources to a plurality of users, for example, OFDM-FDMA (OFDMA) method, OFDM-TDMA method and An OFDM-CDMA method or the like can be given. In particular, the OFDMA (Orthogonal Frequency Division Multiple Access) approach allocates a portion of all subcarriers to individual users to accommodate multiple users.

  FIG. 1 is a diagram illustrating a method of allocating radio resources according to related technology. Referring to FIG. 1, the broadband wireless access system includes the specific configuration of FIG. 1 as a basic unit for allocating OFDMA uplink radio resources. The specific configuration shown in FIG. 1 is called a tile structure. In this tile structure, channel quality indication channel (CQICH) data or acknowledgment channel (ACKCH) data is transferred through a plurality of data subcarriers 102, 103, 105, 106, 107, 108, 110 and 111. The pilot channel is transferred through pilot subcarriers 101, 104, 109 and 112. Each subcarrier transmitted through the tile structure is called a unit of the tile structure.

  The present invention is directed to communicating non-coherent detectable signals for use in orthogonal frequency division multiplexing (OFDM) access systems.

  Additional features and advantages of the present invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from consideration of the following description or practice of the invention. It becomes clear from.

  The above objects and additional advantages of the present invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

  In order to obtain such additional features and advantages and achieve the objectives of the present invention, the present invention uses orthogonal frequency division multiplexing (OFDM) as embodied and extensively described. It is embodied in a method for allocating radio resources in a radio communication system. The method includes receiving data associated with a radio resource allocation map from a base station at a mobile station, wherein the radio allocation map includes control parameters for transferring an uplink channel, and the uplink The channel is a first set of subcarriers associated with representing at least a portion of an n-bit data payload and a second set of subcarriers associated with representing at least a portion of a non-pilot m-bit data payload. The mobile station comprising one or more OFDM tiles, wherein the subcarrier carries modulated data, the first set and the second set of subcarriers being mutually exclusive Transferring an uplink channel from the mobile station to the base station.

  Preferably, the uplink channel comprises first (primary) tiles as shown below, with the x-axis representing the time domain and the y-axis representing the frequency domain.

好ましくは、上り回線チャネルは、ｘ軸は時間領域を表し、ｙ軸は周波数領域を表す下図のような第２のタイルをさらに含んでなる。

Preferably, the uplink channel further comprises a second tile as shown in the figure below where the x-axis represents the time domain and the y-axis represents the frequency domain.

本発明の一面は、副搬送波の１番目及び２番目のセットのうちのいずれかの利用と関連した情報が正常（ｎｏｒｍａｌ）マップ情報要素を用いて移動局で受信される。

In one aspect of the invention, information associated with the use of either the first or second set of subcarriers is received at the mobile station using a normal map information element.

  In another aspect of the present invention, information related to utilization of either the first or second set of subcarriers is received at the mobile station using the HARQ map information element.

  Preferably, the first set of subcarriers is associated with representing at least a portion of a 6-bit data payload. Preferably, the second set of subcarriers is associated with representing at least a portion of a 4-bit data payload.

  Yet another aspect of the invention relates to the uplink channel transferring one of channel quality information, antenna selection options and a precoding matrix codebook.

  Preferably, the uplink channel comprises: fast downlink measurement, MIMO mode, antenna grouping, antenna selection, reduced codebook, quantized precoding weight feedback, precoding in codebook Associated with transferring one of an index to the matrix, channel matrix information and per stream power control.

  Preferably, the use of a second set of subcarriers for transferring at least a portion of the m-bit data payload is requested by either the base station or the mobile station.

  Preferably, the six OFDM tiles include one OFDM slot for representing a 4-bit data payload, which is represented as follows:

上記の表中のベクトルインデックスは、下のように表される。

The vector index in the above table is expressed as follows:

本発明の他の実施例によれば、直交周波数分割多重化（ＯＦＤＭ）を用いる無線通信システムで無線資源を割り当てる方法において、無線資源割当マップと関連したデータを移動局に転送する段階及び前記移動局から上り回線チャネルを受信する段階を含み、ここで、前記無線割当マップは、前記上り回線チャネルを受信するための制御パラメータを含み、前記上り回線チャネルは、ｎビットデータペイロードの少なくとも一部分を表すことと関連した副搬送波の１番目のセット及びノンパイロットｍビットデータペイロードの少なくとも一部分を表すことと関連した副搬送波の２番目のセットを含む１つ以上のＯＦＤＭタイルを含み、前記それぞれの副搬送波は変調されたデータを運搬し、前記副搬送波の１番目と２番目のセットは相互排他的（ｅｘｃｌｕｓｉｖｅ）であることを特徴とする無線資源割当方法が提供される。

According to another embodiment of the present invention, in a method for allocating radio resources in a radio communication system using orthogonal frequency division multiplexing (OFDM), transferring data associated with a radio resource allocation map to a mobile station and the mobile Receiving an uplink channel from a station, wherein the radio assignment map includes control parameters for receiving the uplink channel, wherein the uplink channel represents at least a portion of an n-bit data payload One or more OFDM tiles including a first set of subcarriers associated with and a second set of subcarriers associated with representing at least a portion of a non-pilot m-bit data payload, said respective subcarriers Carries modulated data and the first and second sets of subcarriers are mutually exclusive Radio resource allocation method which is a basis (exclusive) is provided.

  According to another embodiment of the present invention, a mobile communication apparatus for allocating radio resources in a radio communication system using orthogonal frequency division multiplexing (OFDM) is a receiver that receives data associated with a radio resource allocation map from a base station. And a transmitter for transferring an uplink channel from the mobile communication device to the base station, wherein the radio assignment map includes a control parameter for transferring the uplink channel, and the uplink channel is n One or more OFDM tiles including a first set of subcarriers associated with representing at least a portion of the bit data payload and a second set of subcarriers associated with representing at least a portion of the non-pilot m-bit data payload Each sub-carrier carries modulated data, the first of the sub-carriers The second set radio communication apparatus characterized by are mutually exclusive (exclusive) is provided.

  It will be appreciated that both the general description of the invention described above and the following detailed description are exemplary and explanatory and provide additional explanation of the invention as claimed.

  The present invention is applicable to a broadband wireless connection system.

  The present invention relates to allocating radio resources in a wireless communication system using orthogonal frequency division multiplexing (OFDM).

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference numerals as much as possible.

  Preferably, the present invention is applied to a broadband wireless access system such as the system announced in IEEE 802.16, but is not limited thereto, and the present invention is applicable to other types of wireless access systems. .

  Typically, channel measurements are made on data subcarriers based on pilot subcarriers, such that coherent detection techniques are used for data subcarriers. However, ACKCH or CQICH uses non-coherent detection techniques without making channel measurements. Meanwhile, this ACKCH or CQICH uses orthogonal codewords to implement a non-coherent detection method.

  Table 1 below illustrates a codeword for modulating the ACKCH subcarrier when 1-bit ACK information is provided.

下記の表２は、６ビットのＣＱＩ情報が提供される際にＣＱＩＣＨ副搬送波を変調するためのコードワードを例示するものである。

Table 2 below illustrates a codeword for modulating the CQICH subcarrier when 6-bit CQI information is provided.

下記の表３は、５ビットのＣＱＩ情報が提供される際にＣＱＩＣＨ副搬送波を変調するためのコードワードを例示するものである。

Table 3 below illustrates a codeword for modulating the CQICH subcarrier when 5-bit CQI information is provided.

下記の表４は、４ビットのＣＱＩ情報が提供される際にＣＱＩＣＨ副搬送波を変調するためのコードワードを例示するものである。

Table 4 below illustrates a codeword for modulating the CQICH subcarrier when 4-bit CQI information is provided.

表４を参照すると、信号が８データ副搬送波によって転送されうるように各タイルのベクトルは８直交（Ｑｕａｄｒａｔｕｒｅ）位相遷移キーイング（ＱＰＳＫ）シンボルを含む。

Referring to Table 4, the vector of each tile includes 8 quadrature phase transition keying (QPSK) symbols so that the signal can be transferred by 8 data subcarriers.

表５を参照すると、Ｐ０、Ｐ１、Ｐ２及びＰ３は、下記の式１で表される。

Referring to Table 5, P0, P1, P2, and P3 are represented by the following formula 1.

単一の副チャネルは６個のタイルを含む。ＣＱＩＣＨは単一の副チャネルを使用することができ、ＡＣＫＣＨは副チャネルの半分を使用することができる。換言すると、ＣＱＩＣＨは６個のタイルを使用することができ、ＡＣＫＣＨは３個のタイルを使用することができる。

A single secondary channel contains 6 tiles. CQICH can use a single secondary channel and ACKCH can use half of the secondary channel. In other words, CQICH can use 6 tiles and ACKCH can use 3 tiles.

  FIG. 2 is a diagram illustrating a method for allocating a CQICH (channel quality indication channel) region and an ACKCH (acknowledgment channel) region in an OFDM uplink according to an embodiment of the present invention. Referring to FIG. 2, a partial area of the uplink two-dimensional map is pre-allocated to the ACKCH dedicated (dedicated) area 201, and the remaining areas are pre-allocated to the CQICH dedicated area 202.

  Each subchannel is allocated to the ACKCH dedicated area 201 and the CQICH dedicated area 202 so that a specific MSS (Mobile Subscriber Station) can use the ACKCH dedicated area 201 and the CQICH dedicated area 202. Referring to FIG. 2, MSS # 1 can be assigned to ACK # 1, MSS # 2 can be assigned to ACK # 2, ..., MSS # 8 can be assigned to ACK # 8, MSS # 9 can be assigned to CQICH # 1, MSS # 10 can be assigned to CQICH # 2 and CQICH # 3, and MSS # 11 can be assigned to CQICH # 4.

  If the base station uses a non-coherent detection technique, there is no need to use pilot subcarriers. In this case, it is not necessary to use four pilot subcarriers allocated to each tile, and uplink radio resources and terminal transfer power are not consumed excessively.

  Thus, new information is carried on the subcarriers assigned to the pilot channel, and specific information based on non-coherent detection techniques in the same manner as CQICH or ACKCH is transmitted by conventional subcarriers with pilot signals. Thereafter, it is transferred to the CQICH and ACKCH tile structures so that it can be transferred.

  FIG. 3 is a diagram illustrating a tile structure when a new signal is transferred using a subcarrier that has transferred a pilot signal according to an embodiment of the present invention. Referring to FIG. 3, the new signal can be transferred by subcarriers 301, 304, 309 and 312. These subcarriers are used to transfer pilot signals.

  As described above, when the new signal is placed on the subcarriers that were transmitting pilot signals in the tile structure for CQICH and ACKCH, the subcarriers that were transmitting each pilot signal are additional It is called a subcarrier. When the additional subcarriers formed by grouping of unit tile structures are used, the second (secondary) CQICH and the second ACKCH are not the first (primary) ACKCH and the first CQICH. Can be earned.

  FIG. 4 is a diagram illustrating a method for obtaining a second CQICH from a CQICH tile structure according to an embodiment of the present invention. Referring to FIG. 4, a single CQICH includes 6 tile units (1 subchannel) and 4 additional subcarriers so that all 24 additional subcarriers can be obtained from each CQICH. A carrier wave can be obtained from each tile unit. On the other hand, the ACKCH or the second CQICH may include 3 tile units (1/2 subchannels), and each tile unit may use a single ACKCH or the second CQICH using 24 subcarriers. As constructed, it contains 8 subcarriers. Thus, a single ACKCH (ie, the second ACKCH) or a second CQICH can be constructed using 24 additional subcarriers that can be obtained from a single CQICH.

  FIG. 5 is a diagram illustrating a method for obtaining a second ACKCH from two ACKCH tile structures according to an embodiment of the present invention. Referring to FIG. 5, a single ACKCH can include 3 tile units, so that 4 additional subcarriers can be obtained from all 2 ACKCHs. Can be obtained from each tile unit. On the other hand, a single ACKCH (i.e., the second ACKCH) is 24 pieces as shown in FIG. 5 as constructed when an additional subcarrier is acquired from a group including two ACKCHs. It can be constructed using subcarriers.

  FIG. 6 is a diagram illustrating a method for obtaining a second CQICH from two CQICH tile structures according to an embodiment of the present invention. Referring to FIG. 6, each CQICH can include 6 tile units so that a total of 48 additional subcarriers can be obtained from 2 CQICHs, and 4 additional units from each tile unit. Subcarriers are acquired. Meanwhile, the CQICH also includes 6 tile units so that a single CQICH can be constructed using 48 subcarriers, and each tile unit includes 8 subcarriers. Thus, a single CQICH (ie, the second CQICH) can be constructed with 48 additional subcarriers that can be obtained from two CQICHs.

  FIG. 7 is a diagram illustrating a method for obtaining a second CQICH from four ACKCH tile structures according to an embodiment of the present invention. Referring to FIG. 7, a single ACKCH may include 3 tile units so that a total of 48 additional subcarriers can be obtained from 4 ACKCHs. Additional subcarriers can be acquired. Meanwhile, the CQICH can include 6 tile units so that a single CQICH can be constructed using 48 subcarriers, and each tile unit includes 8 subcarriers. Thus, a single CQICH (ie, the second CQICH) can be constructed with 48 additional subcarriers that can be obtained from 4 ACKCHs.

  Preferably, the following method can be configured to assign codewords to subcarriers. According to the first preferred embodiment of the present invention, as shown in Tables 6 to 9 below, 12 tiles contained in a single CQICH or 2 ACKCHs are grouped into 6 sets. Each group includes two tiles and can be assigned a codeword.

  Table 6 below illustrates a method for allocating codewords to modulate the second ACKCH subcarrier when 1-bit ACK information is provided.

下記の表７は、６ビットのＣＱＩ情報が提供される際にＣＱＩＣＨ副搬送波を変調するためにコードワードを割り当てる方法を例示している。

Table 7 below illustrates a method for assigning codewords to modulate CQICH subcarriers when 6-bit CQI information is provided.

下記の表８は、５ビットのＣＱＩ情報が提供される際にＣＱＩＣＨ副搬送波を変調するためのコードワードを例示している。

Table 8 below illustrates a codeword for modulating the CQICH subcarrier when 5-bit CQI information is provided.

下記の表９は、４ビットのＣＱＩ情報が提供される際にＣＱＩＣＨ副搬送波を変調するためのコードワードを例示している。

Table 9 below illustrates a codeword for modulating the CQICH subcarrier when 4-bit CQI information is provided.

一方、本発明の第２の好ましい実施例によれば、下記の表１０及び１１に表すように、コードワードは単一のＣＱＩＣＨまたは２個のＡＣＫＣＨ中に含まれた１２個タイルのそれぞれに割り当てられることができる。

On the other hand, according to the second preferred embodiment of the present invention, as shown in Tables 10 and 11 below, a codeword is assigned to each of 12 tiles contained in a single CQICH or two ACKCHs. Can be done.

  Table 10 below illustrates a method for allocating codewords to modulate the second ACKCH subcarrier when 1-bit ACK information is provided.

表１１に表されたコードワード割当に適用されるタイルの付加的な副搬送波が、図８に示されている。

Additional subcarriers for tiles applied to the codeword assignments shown in Table 11 are shown in FIG.

  FIG. 8 illustrates a tile structure used in a method for allocating codewords using additional subcarriers according to an embodiment of the present invention.

  Referring to FIG. 8 and Table 12 below, the vector assigned to each tile includes four modulation symbols to perform signal transfer through four additional subcarriers.

第２のＡＣＫＣＨは、パイロットチャネルに割り当てられた２４個の副搬送波を用いて構築されることができる。２４個のパイロット副搬送波を用いてＡＣＫＣＨを構築する方法は、図９及び図１０に例示する方法の以外に様々な方式によって付加的な副搬送波で具現されることができる。

The second ACKCH can be constructed using 24 subcarriers assigned to the pilot channel. A method of constructing an ACKCH using 24 pilot subcarriers may be implemented with additional subcarriers by various methods other than the methods illustrated in FIGS. 9 and 10.

  The second ACKCH can be configured using three tiles. Table 13 below illustrates codewords that can be used when the above-described second ACKCH includes three tiles.

第２のＣＱＩＣＨは４８個のパイロット副搬送波を用いて構築されることができる。４８個のパイロット副搬送波を用いてＡＣＫＣＨを構築するための方法は、図６及び図７に例示した方法の以外に様々な方式によって付加的な副搬送波で具現されることができる。

The second CQICH can be constructed with 48 pilot subcarriers. A method for constructing ACKCH using 48 pilot subcarriers may be implemented with additional subcarriers by various methods other than the methods illustrated in FIGS. 6 and 7.

  The second CQICH can be configured with 6 tiles. Table 14 below illustrates codewords that can be applied when the above-described second CQICH includes six tiles.

一方、新しいコードワードは、下記の表１５に表すように、二進位相遷移キーイング（ＢＰＳＫ）を用いて構築されることができる。

On the other hand, new codewords can be constructed using binary phase transition keying (BPSK) as shown in Table 15 below.

基地局は、第２のＡＣＫＣＨと関連した情報を移動加入者局（ＭＳＳ）に知らせるために下記の表１６に表すメッセージを使用することができる。

The base station may use the message shown in Table 16 below to inform the mobile subscriber station (MSS) of information related to the second ACKCH.

表１６によれば、前記“ＵＬ−ＭＡＰタイプ”フィールド及び“サブタイプ”フィールドは、ＭＳＳにメッセージタイプ情報を知らせるように変更されることができる。換言すると、前記ＭＳＳは、上述の“ＵＬ−ＭＡＰタイプ”及び“サブタイプ”フィールドを参照することによって対応するメッセージの内容情報を認識できる。一方、“長さ”フィールドは、前記ＭＳＳにバイト単位の“長さ”フィールドを含む全体メッセージの大きさ情報を知らせる。

According to Table 16, the “UL-MAP type” field and the “subtype” field may be changed to inform the MSS of message type information. In other words, the MSS can recognize the content information of the corresponding message by referring to the “UL-MAP type” and “subtype” fields described above. Meanwhile, the “length” field informs the MSS of the size information of the entire message including the “length” field in bytes.

  In the “first / second H-ARQ area indication” field, the H-ARQ area of the current frame is different from the H-ARQ area of the past frame, or another H-ARQ area in the same frame. Has a value of 1 if exists. The “OFDMA symbol offset” field informs the MSS of the coordinates (coordinates) where the “H-ARQ” region starts from the uplink. The “sub-channel offset” field informs the MSS the coordinates (coordinates) where the “H-ARQ” region starts from the uplink. In the “No. OFDMA symbols” field, the MSS is informed of the size information occupied by the “H-ARQ” area on the uplink in symbol units. In the “No. Sub-channels” field, the size information occupied by the “H-ARQ” area in the uplink is notified to the MSS in units of subchannels.

  On the other hand, the base station can use the message shown in Table 17 below to inform the MSS of information related to the second CQICH.

表１７によれば、“ＵＬ−ＭＡＰタイプ”フィールド及び“サブタイプ”フィールドは、ＭＳＳにメッセージタイプ情報を知らせるために変更されることができる。換言すると、前記ＭＳＳは、上述の“ＵＬ−ＭＡＰタイプ”と“サブタイプ”フィールドを参照することによってメッセージ内容情報を認識できる。一方、“長さ”フィールドは、ＭＳＳにバイト単位に“長さ”フィールドを含めた全体メッセージの大きさ情報を知らせる。

According to Table 17, the “UL-MAP type” field and the “subtype” field may be changed to inform the MSS of message type information. In other words, the MSS can recognize the message content information by referring to the “UL-MAP type” and “subtype” fields described above. On the other hand, the “length” field informs the MSS of size information of the entire message including the “length” field in byte units.

  The “first / second CQICH area indication” field has a value of 1 when the CQICH area of the current frame is different from the CQICH area of the past frame or when another CQICH area exists in the same frame. . The “OFDMA symbol offset” field informs the MSS of the coordinates (coordinates) where the “CQICH” region starts from the uplink. The “subchannel offset” field informs the MSS the coordinates (coordinates) where the “CQICH” region starts from the uplink. The “No. OFDMA symbols” field informs the MSS of size information occupied by the “CQICH” area on the uplink in symbol units. The “No. Sub-channels” field notifies the MSS of the size information occupied by the “CQICH” area in the uplink, in subchannel units.

  The information transferred through the second CQICH according to the present invention can be used in various ways based on the feedback type. For example, when information related to the signal-to-noise ratio (SNR) is transferred to the base station, the payload of the information can be generated as in Equation 2 below.

一方、多重入力多重出力（ＭＩＭＯ）モードでは、下記の表１８に表されたペイロードが発生できる。

On the other hand, in the multiple input multiple output (MIMO) mode, the payload shown in Table 18 below can be generated.

下記の表１９は、表１８に表されたそれぞれの値に対応するアンテナグルーピング方法を例示している。

Table 19 below illustrates antenna grouping methods corresponding to the respective values shown in Table 18.

下記の表２０は、表１８に表した個々の値に対応するアンテナ選択方法を例示している。

Table 20 below illustrates antenna selection methods corresponding to the individual values shown in Table 18.

下記の表２１は、表１８に表された個々の値に対応する減少されたプリコーディング行列コードブックを採用する方法を例示している。

Table 21 below illustrates how to employ a reduced precoding matrix codebook corresponding to the individual values represented in Table 18.

基地局は、“ＣＱＩＣＨ＿Ｅｎｈａｎｃｅｄ＿Ａｌｌｏｃ＿ＩＥ”フィールドを通してＭＳＳに上述のフィードバックタイプ情報と関連した情報を転送する。

The BS transmits information related to the feedback type information described above to the MSS through the “CQICH_Enhanced_Alloc_IE” field.

  Table 22 and Table 23 below exemplify a part of “CQICH_Enhanced_Alloc_IE” including the feedback type information described above.

一方、ＳＮＲと関連した情報が基地局に転送されるとすれば、本発明に関する第２のＣＱＩＣＨを通して転送された情報のペイロードは、下記の式３のように発生可能である。

On the other hand, if the information related to the SNR is transferred to the base station, the payload of the information transferred through the second CQICH related to the present invention can be generated as shown in Equation 3 below.

基地局に単にＳＮＲ関連情報を転送できるフィードバックタイプと関連した情報は、“ＣＱＩＣＨ＿Ｅｎｈａｎｃｅｄ＿Ａｌｌｏｃ＿ＩＥ”フィールドを通してＭＳＳに転送される。

Information related to the feedback type that can simply transfer SNR related information to the base station is transferred to the MSS through the “CQICH_Enhanced_Alloc_IE” field.

  Table 24 below illustrates a portion of the “CQICH_Enhanced_Alloc_IE” field that includes the feedback type information described above.

一方、第２のＣＱＩＣＨを通して転送された情報は、フィードバックタイプによって様々な方式で用いられることができる。すなわち、上述の第２のＣＱＩＣＨは、ＭＩＭＯモード選択のためにのみ用いられることができる。もし第２のＣＱＩＣＨがＭＩＭＯモード選択のためにのみ用いられると、ペイロードは下記の表２５のように発生することができる。

Meanwhile, the information transferred through the second CQICH can be used in various manners depending on the feedback type. That is, the second CQICH described above can be used only for MIMO mode selection. If the second CQICH is used only for MIMO mode selection, the payload can be generated as shown in Table 25 below.

下記の表２６は、表２５に表した個々の値に対応するアンテナグルーピング方法を例示している。

Table 26 below illustrates antenna grouping methods corresponding to the individual values shown in Table 25.

下記の表２７は、表２５に表された個々の値に対応するアンテナグルーピング方法を例示している。

Table 27 below illustrates antenna grouping methods corresponding to the individual values shown in Table 25.

下記の表２８は、表２５に表された個々の値に対応する減少されたプリコーディング行列コードブックを採用する方法を例示している。

Table 28 below illustrates how to employ a reduced precoding matrix codebook corresponding to the individual values represented in Table 25.

基地局は、“ＣＱＩＣＨ＿Ｅｎｈａｎｃｅｄ＿Ａｌｌｏｃ＿ＩＥ”フィールドを通してＭＳＳに上述のフィードバックタイプ情報と関連した情報を転送する。

The BS transmits information related to the feedback type information described above to the MSS through the “CQICH_Enhanced_Alloc_IE” field.

  Table 29 below illustrates a portion of “CQICH_Enhanced_Alloc_IE” that includes the feedback type information described above.

第２のファストフィードバックチャネルの使用が基地局によってＭＳＳに要請されるが、ＭＳＳは、基地局に要請メッセージを送ることによって使用を要請するオプション（ｏｐｔｉｏｎ）を持つ。詳述の説明から明らかなように、本発明による広帯域無線接続システムで非コヒーレント検出可能な信号を受信する方法は、非コヒーレント検出手法によって信号検出が行えるときにパイロット信号の代わりに他の信号を転送でき、これによって増加された転送効率の実現が可能になる。

The use of the second fast feedback channel is requested by the base station to the MSS, but the MSS has an option to request use by sending a request message to the base station. As will be apparent from the detailed description, the method of receiving a signal capable of non-coherent detection in the broadband wireless access system according to the present invention is a method for receiving other signals instead of pilot signals when signal detection can be performed by a non-coherent detection method. Transfer, and thus increased transfer efficiency can be realized.

  Although the present invention will be described in the context of mobile communications, the present invention can be used in any wireless communication system that uses mobile devices such as PDAs and laptop computers with uniform wireless communication capabilities. is there.

  The preferred embodiment described above may be embodied as a method, mechanism or article of manufacture using standard programming and / or engineering techniques that can produce software, firmware, hardware, or any combination thereof. it can. Here, the product refers to hardware logic (ie, integrated circuit chip, field programmable gate array (FPGA), custom semiconductor, etc.) or computer readable medium (ie, magnetic storage medium (ie, , Hard disk drive, floppy (registered trademark) disk, tape, etc.), optical storage (CD-ROM, optical disk, etc.), volatile and nonvolatile memory devices (ie, EEPROM, ROM, PROM, RAM, DRAM, SRAM, firmware) Software, programmable logic, etc.)) means code or logic embodied in).

  Code in the computer readable medium is connected and executed by a processor. The code embodied in the preferred embodiment is more connectable from a transfer media (media) or a file server (server) on the network. In these cases, the product in which the code is embodied may include a transfer medium such as a network transfer line, a wireless transfer medium, a signal propagated through space, a radio wave, an infrared signal, and the like. Of course, for those skilled in the art, various modifications can be made to this configuration without departing from the scope of the present invention, and the product may contain any information known in the related art. It is clear that it can be included.

  9A and 9B are diagrams illustrating structures of a transmitter apparatus (unit) and a receiver apparatus of a mobile communication device according to an embodiment of the present invention. Referring to FIG. 9A, transmitter apparatus 500 preferably includes a processor 510 for processing the forwarded signal. Prior to transfer, the data bits are channel coded with a channel goda 520, and redundancy bits are added to the data bits. The data bits are subsequently mapped to signals in a symbol mapper 530 in a manner such as QPSK or 16QAM. Subsequently, the signal is subchannel modulated by a subchannel modulator 540 and the signal is mapped to an OFDMA subcarrier. The OFDM waveform signal is then constructed by combining the various subcarriers through an inverse fast Fourier transform (IFFT) 550. Finally, the signal is filtered through a filter 560, converted to an analog signal by a digital-to-analog converter (DAC) 570, and transferred to a receiver by an RF module 580.

  Referring to FIG. 9B, the structure of the receiver 600 of the present invention is similar to the structure of the transmitter 500. However, reverse processing is performed on the signal. Preferably, the signal is received by RF module 680 and subsequently converted to a digital signal by analog to digital converter 670 and filtered by filter 660. After filtering, the signal is subjected to a Fast Fourier Transform (FFT) to deconstruct the waveform signal. The signal is then demodulated into subchannels by subchannel demodulator 640, symbol demapped by symbol demapper 630, and channel decoded by channel decoder 620 before being transmitted to processor 610 for processing. Is done.

  Preferably, when the user inputs instruction information, such as a telephone number, into the mobile communication device by pressing a button on the keypad or by voice activation using a microphone, the processor 510 or 610 may The instruction information is received and processed in order to perform an appropriate function such as dialing. Operational data can be retrieved from the storage device to perform the function. Also, the processor 510 or 610 may display instruction information or operation information on a display device for user reference and convenience.

  The processor generates instruction information to the RF module 580 or 680, for example, to initiate communication such as transferring a wireless signal containing voice communication data. The RF module includes a receiver and a transmitter for receiving and transferring wireless signals. The antenna transmits and receives wireless signals and the like. Upon receiving the wireless signal, the RF module transmits the signal and converts it to a baseband frequency for processing by the processor. These processed signals can be converted into audible or readable information output from a speaker, for example.

  The processor stores message history data of messages received by or forwarded to other users, receives conditional requests for message history data input by users, and The conditional request is processed so as to read the message history data corresponding to the conditional request from the storage device, and the message history data is output to the display device. The storage device is configured to store message history data of received messages and forwarded messages.

  It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Therefore, it is to be understood that the present invention includes various modifications and implementations within the scope of the appended claims and their equivalents.

It is a figure which shows the method to allocate the radio | wireless resource by related technology. FIG. 3 is a diagram illustrating a method for allocating a CQICH (channel quality indication channel) region and an ACKCH (acknowledgment channel) region in an OFDM uplink according to an embodiment of the present invention; FIG. 6 is a diagram illustrating a tile structure when a new signal is transmitted using a subcarrier to which a pilot signal is transferred according to an embodiment of the present invention. FIG. 6 is a diagram illustrating a method for obtaining a second ACKCH from a CQICH tile structure according to an embodiment of the present invention. FIG. 6 is a diagram illustrating a method for obtaining a second ACKCH from two ACKCH tile structures according to an embodiment of the present invention. FIG. 4 illustrates a method for obtaining a second CQICH from two CQICH tile structures according to an embodiment of the present invention. FIG. 4 is a diagram illustrating a method for obtaining a second CQICH from four ACKCH tile structures according to an embodiment of the present invention. FIG. 6 illustrates a tile structure for use in a method for allocating codewords using additional subcarriers according to an embodiment of the present invention. FIG. 3 is a diagram illustrating a structure of a transmitter device (Unit) and a receiver device of a mobile communication device according to an embodiment of the present invention. FIG. 3 is a diagram illustrating a structure of a transmitter device (Unit) and a receiver device of a mobile communication device according to an embodiment of the present invention.

Claims (36)

A method for allocating radio resources in a radio communication system using orthogonal frequency division multiplexing (OFDM), comprising:
Receiving data associated with a radio resource allocation map from a base station at a mobile station;
Transferring an uplink channel from the mobile station to the base station,
The radio allocation map includes control parameters for transferring the uplink channel, the uplink channel including a first set of subcarriers and non-pilots associated with representing at least a portion of an n-bit data payload. non-pilot) including one or more OFDM tiles including a second set of subcarriers associated with representing at least a portion of the m-bit data payload, each subcarrier carrying modulated data; A radio resource allocation method, wherein the first and second sets of subcarriers are mutually exclusive. The uplink channel includes a first (primary) tile including the following figure:
The radio resource allocation method according to claim 1, wherein the x-axis represents a time domain and the y-axis represents a frequency domain.

The uplink channel further includes a second (secondary) tile including the following figure:
The radio resource allocation method according to claim 2, wherein the x-axis represents a time domain and the y-axis represents a frequency domain.

  The information related to utilization of one of the first and second sets of subcarriers is received at the mobile station using a normal map information element, according to claim 1, wherein The radio resource allocation method described.   The radio of claim 1, wherein information related to utilization of one of the first and second sets of subcarriers is received at the mobile station using a HARQ map information element. Resource allocation method.   The method of claim 1, wherein the first set of subcarriers is associated with representing at least a portion of a 6-bit data payload.   The method of claim 1, wherein the second set of subcarriers is associated with representing at least a portion of a 4-bit data payload.   The radio resource according to claim 7, wherein the uplink channel is associated with transmitting one of channel quality information, antenna selection options and a precoding matrix codebook. Assignment method.   The uplink channel includes fast downlink measurement, MIMO mode, antenna grouping, antenna selection, reduced codebook, quantized precoding weight feedback, and index to the precoding matrix in the codebook. 9. The radio resource allocation method according to claim 8, wherein the radio resource allocation method is related to transmitting one of channel matrix information and per stream power control.   The use of claim 2, wherein the use of a second set of subcarriers to transfer at least a portion of the m-bit data payload is requested by either the base station or the mobile station. Wireless resource allocation method.   The method of claim 1, wherein the six OFDM tiles include one OFDM slot for representing a 4-bit data payload. The 4-bit data payload is represented as follows:

The radio resource allocation method according to claim 11, wherein the vector index is represented as shown in the following table.

A method for allocating radio resources in a radio communication system using orthogonal frequency division multiplexing (OFDM), comprising:
Transferring data associated with the radio resource allocation map to the mobile station;
Receiving an uplink channel from the mobile station, and
The radio assignment map includes control parameters for receiving the uplink channel, the uplink channel being associated with a first set of subcarriers and non-pilot m associated with representing at least a portion of an n-bit data payload. Including one or more OFDM tiles including a second set of subcarriers associated with representing at least a portion of a bit data payload, wherein each subcarrier carries modulated data, the first of the subcarriers A radio resource allocation method, wherein the second set and the second set are mutually exclusive. The uplink channel includes a first (primary) tile including the following figure:
The radio resource allocation method according to claim 13, wherein the x-axis represents a time domain and the y-axis represents a frequency domain.

The uplink channel further includes a second (secondary) tile including the following figure:
The radio resource allocation method according to claim 14, wherein the x-axis represents a time domain and the y-axis represents a frequency domain.

  The information related to the use of one of the first and second sets of subcarriers is forwarded to the mobile station using a normal map information element as claimed in claim 13. The radio resource allocation method described.   The radio according to claim 13, characterized in that information associated with the use of one of the first and second sets of subcarriers is transferred to the mobile station using a HARQ map information element. Resource allocation method.   The method of claim 13, wherein the first set of subcarriers is associated with representing at least a portion of a 6-bit data payload.   The method of claim 13, wherein the second set of subcarriers is associated with representing at least a portion of a 4-bit data payload.   The radio resource of claim 19, wherein the uplink channel is associated with receiving one of channel quality information, antenna selection options and a precoding matrix codebook. Assignment method.   The uplink channel includes fast downlink measurement, MIMO mode, antenna grouping, antenna selection, reduced codebook, quantized precoding weight feedback, index to precoding matrix in codebook, channel matrix The radio resource allocation method according to claim 20, characterized in that it is associated with receiving one of information and per stream power control.   14. The use of the second set of subcarriers for receiving at least a portion of the m-bit data payload is requested by either the base station or the mobile station. Wireless resource allocation method.   The method of claim 13, wherein the six OFDM tiles include one OFDM slot for representing a 4-bit data payload. The 4-bit data payload is represented as follows:

The radio resource allocation method according to claim 23, wherein the vector index is represented as shown in the following table.

A mobile communication device for allocating radio resources in a radio communication system using orthogonal frequency division multiplexing (OFDM),
A processor for processing data associated with the radio resource allocation map from the base station;
A transmitter for transferring an uplink channel from the mobile communication device to the base station,
The radio allocation map includes control parameters for forwarding the uplink channel, the uplink channel being associated with a first set of subcarriers and non-pilot m associated with representing at least a portion of an n-bit data payload. Including one or more OFDM tiles including a second set of subcarriers associated with representing at least a portion of a bit data payload, wherein each subcarrier carries modulated data, the first of the subcarriers And the second set are mutually exclusive. The uplink channel includes a first (primary) tile including the following figure:
26. The wireless communication apparatus according to claim 25, wherein the x-axis represents a time domain and the y-axis represents a frequency domain.

The uplink channel further includes a second (secondary) tile including the following figure:
27. The wireless communication apparatus according to claim 26, wherein the x-axis represents a time domain and the y-axis represents a frequency domain.

  26. The information of claim 25, wherein information associated with usage of one of the first and second sets of subcarriers is received at the mobile communication device using a normal map information element. Wireless communication device.   [26] The information of claim 25, wherein information related to utilization of one of the first and second sets of subcarriers is received at the mobile communication device using a HARQ map information element. Wireless communication device.   26. The wireless communications apparatus of claim 25, wherein the first set of subcarriers is associated with representing at least a portion of a 6 bit data payload.   26. The wireless communications apparatus of claim 25, wherein the second set of subcarriers is associated with representing at least a portion of a 4-bit data payload.   26. The wireless communication of claim 25, wherein the uplink channel is associated with transferring one of channel quality information, antenna selection options, and a precoding matrix codebook. apparatus.   The uplink channel includes fast downlink measurement, MIMO mode, antenna grouping, antenna selection, reduced codebook, quantized precoding weight feedback, index to precoding matrix in codebook, channel matrix 33. The wireless communications apparatus of claim 32, associated with transferring one of information and per stream power control.   The use of the second set of subcarriers for transferring at least a portion of the m-bit data payload is requested by one of the base station or the mobile communication device. 25. The wireless communication device according to 25.   26. The wireless communication apparatus of claim 25, wherein the six OFDM tiles include one OFDM slot for representing a 4-bit data payload. The 4-bit data payload is represented as shown in the following table:

36. The wireless communication apparatus according to claim 35, wherein the vector index is represented as shown in the following table.

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