200803244 九、發明說明： 【發明所屬之技術領域j 發明領域 本發明係有關於一種無線基地台之發送控制技術，特 5別是有關於依報告時間點後所經過之時間修正諸如下行無 線通道之測量結果CQI(channel quality indicator)資訊等，以 適當地進行排程或鏈路調適等之發送控制之無線基地台及 發送控制方法。 10 發明背景 在HSDPA(high speed downlink packet access)等最近之 無線通信方式中，為進行下行線路之鏈路調適(發送電力控 «1» ^ -ft rAn ^ _3u. 利、遛應'碉燹胖碉、週應編碼等）或用戶間之封包排程，而 從行動台將測量下行無線通道之狀態之結果（以下稱 15 為”cqi”)向基地台報告。200803244 IX. Description of the invention: [Technical field of the invention] FIELD OF THE INVENTION The present invention relates to a transmission control technology for a wireless base station, and specifically for correcting the time elapsed after the reporting time point, such as a downlink wireless channel. Measurement result CQI (channel quality indicator) information, etc., to perform radio base station and transmission control method for appropriately performing transmission control such as scheduling or link adaptation. 10 BACKGROUND OF THE INVENTION In recent wireless communication methods such as HSDPA (high speed downlink packet access), link adaptation for downlink is performed (send power control «1» ^ -ft rAn ^ _3u.碉, 周应编码, etc.) or the packet schedule between users, and the result of measuring the state of the downlink wireless channel (hereinafter referred to as "cqi") from the mobile station is reported to the base station.
片電源對干擾電力比)，本說明書及申請專利範圍中，不限 於歸。，將傳播損失、接收電力、信號對干擾電力比等表 示無線通道狀態之指標或反饋f訊總稱為卿。 率地進行鍵路调適’或為提高 需更頻繁之CQ1報告。 20纟於傳播環境隨用戶之移動速度高速變動，而更有效 鬲排程所作之多用戶分集，而 之排程（多用戶分仕）之一例 1及用戶2各自之傳播狀況時 第1A圖係顯示時間方向 者。如點線及實線所示，用戶 5 200803244 常變化，在時間軸上依各用戶之傳播狀況’分配無線次、' 負〉原 然而，當CQI報告量增加時，則壓迫上行線路之容量， 耗行動台之電池。 且消The ratio of power supply to interference power is not limited to this specification and the scope of patent application. The indicators or feedbacks indicating the state of the wireless channel, such as transmission loss, received power, signal-to-interference power ratio, etc., are collectively referred to as Qing. Rate the keyway adjustments or increase the CQ1 report that requires more frequent. 20纟 The propagation environment changes with the user's moving speed at a high speed, and more effective, the user diversity of the scheduling, and the scheduling of the multi-user (1) and the user 2 respectively. Show the time direction. As shown by the dotted line and the solid line, the user 5 200803244 often changes, and the wireless transmission time, 'negative> is assigned according to the propagation status of each user on the time axis. However, when the CQI report amount increases, the capacity of the uplink is pressed. The battery of the mobile station. And eliminate
10 1510 15
第1B圖係顯示頻率方向之排程（多用戶分集）之— 在今後之行動通信系統中，為實現更尚之傳送迷率、 、低延 遲、大容量，而預想寬頻化。然而，由於當系統寬頻化护 產生頻率選擇衰落，故為更有效率地傳送，如第1B圖所示 在用戶間分開使用各自狀態佳之頻帶較佳。因此，+ 而將系 統所有頻帶分割成數個副頻帶，對各副頻帶測量、報生^ 報告之方法有許多種，舉例言之，有以下之方法 告CQI最高之前3個副頻帶之號碼及CQI值；報告全領慨 平均值與各副頻帶之平均值之差分；報告對頻率方向使 離散餘弦轉換(DCT : discrete cosine transform)，編石馬、 果。不論何種方法，當要有效利用寬頻時，便產生cqi報u 之資訊量增大之問題。因CQI之資訊量增加，而壓 " k上行線 路之容量，消耗行動台之電池係與時間軸方向之排程相同 此外，亦提出以下之方法，即，依行動台之反饋資二 於時間軸方向及頻率方向進行排程時，依反饋資訊， 組，對各群組決定資源之分配(參照專利文獻1}。 分群 如上述，一鏈路之效率與相對鏈路之反饋資訊量 折衷之關係。當將排程或鏈路調適之時間方向之最^ j有 定義為圖框’將頻率方向之最小單位定義為副頻帶時平= 純地報告每個圖框所有副頻帶之CQI並不實際。即，^ ’單 鏈路容量或電池節約之觀點’報告之資訊量需保持::: 6 200803244 v _傳送效率之最小量，在折衷平衡佳之地點動作。實際 • Λ，在時間方向及頻率方向壓縮到某程度，對數圖框= 報告狀態佳之前3個副頻帶之CQI等刪減方法為有效。 然而，當卿之報告頻率減少日夺，有排程或鍵路調適之 • 5性能惡化之問題。減低CQI報告之頻率之結果，如第_ 所示’報告之週期較排程單位之！圖框長，在無吻之報告 讀態下，產生排程之必要。無法獲得cQI報告之期間，如 ❿ 第2B圖所示’-直維持前次之CQI值，決定排程之優先度。 由於無法以最新之資訊為基礎來排程，故無法選擇最適當 H)之用戶，而降低多用戶分集之增益。進而，無法對排程器 所分配之用戶適當地進行鏈路調適，崎低傳送效率。 【明内3 發明概要 是故’本發明之課題贿供當c鴨告解相對於無線 μ通道之變動不足時，亦可進行最適當之發送控制之無線基 φ 地台之結構及發送控制方法。 土 為實現上述課題，隨CQI等反饋報告後所經過之時間， • 似報告值’依修正值，進行複數用戶間之發送排程或鏈 路調適等之發送控制。 2〇 _言之，可隨反饋報告後所經過之時間，控制發送 優先度。此時，修正報告值，俾使反饋報告後所經過:時 間短之用戶、即信賴度較高之用戶之發送優先度提高。 又，亦可隨反饋報告後所經過之時間，控制鍵路調適 之參數。控制例有： 7 200803244 ⑴反饋報告後所經過之時間愈長，愈Λ ; ⑼使用反饋報告後所經過之時間愈長，多值數愈少之 調變方式； ㈣反饋報告後所經過之時間愈長，發送電力愈大。 5 #者，亦可推測行動台之移動速度，以推測速度修正 經過時間。此時，移動速度快之用戶之經過時間宜修正成 較實際長。 本發明第1觀點中，無線基地台包含有(a)接收來自行動 台之反饋報告之反饋報錢收部、⑻將所接收之反饋報告 10值修正成報告值隨報告後所經過時間減少之修正部及(c)i 所修正之反饋報告值，進行發送分配控制之排程器。 在較佳之例中，排程器依已修正之反饋報告值，控制 複數周戶間之發送優先度及鏈路調適參數之至少一者。 更具體言之，排程器依前述已修正之反饋報告，控制 15發送，俾當反饋報告後所經過之時間愈長，編碼率愈大。 或者控制發送，俾使用反饋報告後所經過之時間愈長，多 值數愈少之調變方式。抑或控制發送，俾當反饋報告後所 經過之時間愈長，發送電力愈大。又或者，控制成提高反 饋報告後所經過之時間短之用戶之發送優先度。 20 在本發明之第2觀點中，發送控制方法具有以下步驟： ⑻從行動台接收有關下行鏈路之反饋報告；（b)將前述所接 收之反饋報告值修正成隨前述報告後所經過之時間減少； (C)依則述所修正之反饋報告，進行對前述行動台之發送分 配控制。 ' 8 200803244 即使CQI報告頻率少時’亦可進行適當之鏈路調適或排 • 程控制。 圖式簡單說明 第1A圖係顯示時間方向之排程之例者。 5 第1B圖係顯示頻率方向之排程之例者。 第2A圖係用以說明使用CQI報告值之習知發送控制者。 第2B圖係用以說明使用CQI報告值之習知發送控制者。 • 第3(a)圖、第3(b)圖係將本發明之動作概念及效果與習 知之方法比較來說明者。 10 第4A圖係說明本發明之多用戶排程之適用例者。 第4B圖係說明本發明之多用戶排程之適用例者。 第5(a)圖〜第5(c)圖係顯示在實施形態所使用之修正 函數之變化者。 弟6(a)圖〜弟6(c)圖係顯不依cqi報告值之修正函數之 15 調整例者。 鲁 第7圖係顯示實施形態之無線基地台之結構例之塊圖。 C貧施方式1 . 較佳實施例之詳細說明 以下，參照圖式，就本發明之較佳實施形態作說明。 2〇第3(b)圖係適用本發明之鏈路調適之動作概念圖。於第3(a) 圖顯示比較例之習知鏈路調適之動作概念。在第3圖中，為 維持傳送效率，與第2A圖同樣地，將cqi報告週期設定成 車父1圖框長。在此例中，每4個圖框便從行動台進行報告。 在第3(a)圖之習知方式中，在無法獲得CQI報告之圖框 9 200803244 中’由於直接使用前次之CQI報告值，來應用鏈路調適，故 在一部份之圖框產生錯誤率增大之問題。即，在圖中如圓 圈所示’儘官傳播惡化，仍使用顯示傳播良好之狀態之前 次值’進行鏈路調適之結果，無法選擇最適當之編碼調變 ^ 5方式，而易產出錯。 . 為解決此弊端，在第3(b)圖之實施形態中，隨報告後所 經過之時間，修正cqi值。在此例中，使前次所接收之 • 值依各圖框階段狀地減少至接收下次之CQI報告為止。這是 由於Ik著日$間之經過，減少⑺说之信賴性之故。藉如此修 10正，如第3(b)圖之圓圈所示，可以更接近實際傳播狀態之 值，進行鏈路調適。 此外，修正無依各圖框進行之必要性，可以更細微之 少鄉八寸減少，亦可類比地以連續函數減少。不論何者， 皆可解決在習知之方式，成為問題之錯誤率之增大。 15 錢路調適，依⑺1等之反饋報告控制之參數例有編瑪 _ 率、調變之多值數、發送電力等。CQI值(反饋報告值)修正 成隨接收時間經過減少之結果，該等參數值亦隨時間經過 • 纟控制。舉例言之，藉控制成⑴反饋報告後所經過之時間 纟長，編碼率愈大；（2)使用反饋報告後所經過之時間愈長， 2〇多值數愈少之調變方式；⑺反饋報告後所經過之日^愈 長，發送電力愈大，而可減低錯誤。 此種CQI值之修正亦可適用於複數用戶之同時存取之 調整。 第4A圖及第侧顯示將反饋報告之修正應用於多用 200803244 . 彳排程之例。如第4A圖所示，用戶则戶2分別每隔侧 框，在不同時間將CQI報告發送至基地台。至對用戶工及用 戶2報口下個CQI值為止之期間，進行使前次接收之⑽報 練階段狀地減低之修正。結果，如第4β圖所示，用以決 . =j複數用戶間之排程考慮之優先度的參數值隨時間經過 没定成較低。換言之，控制成卿報告後所經過之時間短之 用戶之發送優先度提高。 曰 _ 匕種4正之結果，在第4A圖之粗框所示之圖框中，適 當地選擇傳播狀況佳之用戶。即，在圖框列財面，在習知 !〇之方法中，即使時間經過，仍選擇報告時卿值高之用戶2， 而錯誤增大，而如實施形態般修正CQI值，可正確地選擇用 =卜又，在圖框列B方面，在僅依報告時之CQI值之方式 T，與實際之傳_況相反，選擇用戶卜而在實施形態之 方法中，依修正值，正確地選擇用戶2。 15 第5圖係顯示修正函數之變化者。在習知之方式中，如 _ ”⑻圖所示，、經過複數圖框之⑽報告週期之期間，固定 直接使用所接收之CQI報告值。相對於此，在實施形態中， • 考慮接收之後之傳播路徑的惡化，而隨時間經過，減少观 報告值。減少可如第5⑻圖，以直線之傾斜階段狀地減少， 20亦可如第5(c)圖，以指數函數階段狀地減少。 第6圖係顯示進一步適當調整修正函數之例。舉例言 之’當將第6(a)圖之輪廓之修正函數作為基本形時，依所接 收之報告值大小，使修正函數伸縮（變化之比例之變更）。具 體曰之，如第6(b)圖，所接收之Cqj報告值大時，便增大修 11 200803244 正函數之變化率，如第6(c)圖，所接收之CQI值小時，變化 率穩定。亦當然，不管所接收之C()I值之大小，以相同之比 例修正亦可。 第7圖係本發明一實施形態之無線基地台之概略塊 5圖。在無線基地台中’ CQI接收部14藉由天線11、循環写 12、接收RF部13接收從行動台報告之CQI。同步部1 $檢測 CQI之報告時間，以謀求時間同步。同步時間之資訊與 CQI(CQI報告值）一同供給至CQI修正部20。 CQI修正部20隨報告時間後所經過之時間，修正報告 1〇值。修正可為第5(b)圖、第5(c)圖所示之方法，亦可為依CQI 值，組合第6圖之方法。已修正之CQI送至排程器21。 發送緩衝器23將發送用戶資料或控制資料緩衝。監視 部24監视滯留於發送缓衝器之資料，將監視結果傳送至排 程态21。排程器21依已修正之CQI及監視部24之監視結果， 15 進行發送分配。 發送信號生成部22依排程器21之指示，進行要發送之 資料之編碼、調變等，調整發送電力後輸出。此時，適用 依排程器21之指示之鏈路調適。發送RI^p25將發送信號轉 換成R F信號後輸出。發送R F信號藉由循環器丨2，從天線i i 20 發送。 亦可將行動台之移動速度列入考慮，修正CQI。即，無 線基地台1〇具有速度檢測部16，從接收信號檢測行動台之 移動速度’將測量結果輸入至修正部2〇。亦可以行動台 檢測移動速度，將測量結果以無線協定報告之結構來代替。 12 200803244 騎，CQI修正·以行動台之移動速度修正反饋報告 之經過時間。舉例言之，修正成移動速度快之用戶之經過 時間較實際長。具體例有增大修正函數之傾斜 信號接收、CQI接收、CQI報告時間檢測、行動台之移 5動速度之檢測、CQI修正、發送資料之緩衝、發送信號之生 成及之轉換對各用戶進行。排㈣2丨依就各用戶決 定之CQI修正值’進行複數用戶間之發送難及鏈路調適用 之參數之決定。 藉此種結構，當CQI報告之頻率較低時，亦可藉進行考 10畺了傳播惡化之修正，進行適當之發送控制。 本國際申請案係主張2006年4月19日提申之日本專利 申睛案第2006-115805號之優先權者，於本國際申請案沿用 其所有内容。 Γ圖式簡單明;3 15 第1A圖係顯示時間方向之排程之例者。 第1B圖係顯示頻率方向之排程之例者。 第2A圖係用以說明使用CQI報告值之習知發送控制者。 第2B圖係用以說明使用CQI報告值之習知發送控制者。 第3(a)圖、第3(b)圖係將本發明之動作概念及效果與習 20 知之方法比較來說明者。 第4A圖係說明本發明之多用戶排程之適用例者。 第4B圖係說明本發明之多用戶排程之適用例者。 第5(a)圖〜第5(c)圖係顯示在實施形態所使用之修正 函數之變化者。 13 200803244 第6(a)圖〜第6(c)圖係顯示依CQI報告值之修正函數之 調整例者。 第7圖係顯示實施形態之無線基地台之結構例之塊圖。 【主要元件符號說明】 10…無線基地台 20".CQI修正部 11...天線 21...排程器 12...循環器 22...發送信號生成部 13…接收RF部 23…發送緩衝器 14...CQI接收部 24...監視部 15...同步部 16···速度檢測部 25...發送RF部 14Fig. 1B shows the scheduling of the frequency direction (multi-user diversity). In the future mobile communication system, in order to achieve a higher transmission rate, low delay, and large capacity, it is expected to be broadband. However, since the system wideband modulates the frequency selective fading, it is transmitted more efficiently. As shown in Fig. 1B, it is preferable to separately use the frequency bands in which the respective states are better. Therefore, + divides all the frequency bands of the system into several sub-bands. There are many methods for measuring and reporting the sub-bands. For example, the following method reports the number of the first three sub-bands and CQI of the CQI. Value; report the difference between the full-weighted average and the average of each sub-band; report the discrete cosine transform (DCT) of the frequency direction, and edit the stone and fruit. Regardless of the method, when the broadband is to be effectively utilized, the problem of an increase in the amount of information of the cqi report u is generated. Due to the increase in the amount of CQI information, and the capacity of the voltage line, the battery of the mobile station is the same as the schedule of the time axis. In addition, the following method is also proposed, that is, the feedback from the mobile station is in time. When the axis direction and the frequency direction are scheduled, the allocation of resources is determined for each group according to the feedback information and group (refer to Patent Document 1). The grouping is as described above, and the efficiency of one link and the amount of feedback information of the relative link are compromised. Relationship. When the schedule or link adaptation time direction is the most defined as the frame 'define the minimum unit of the frequency direction as the sub-band, flat = purely report the CQI of all sub-bands of each frame is not Actually, that is, ^ 'single link capacity or battery saving view' report information needs to be maintained::: 6 200803244 v _ The minimum amount of transmission efficiency, action at a compromised location. Actual • Λ, in the time direction and The frequency direction is compressed to a certain degree, and the logarithmic frame = the CQI and other deletion methods of the three sub-bands before the report status is good. However, when the report frequency of the Qing is reduced, there are scheduling or key adjustments. The problem of deteriorating performance. The result of reducing the frequency of CQI report, as shown in the figure _, the period of the report is more than the scheduling unit! The frame is long, and it is necessary to generate the schedule in the no-know report reading state. The cQI cannot be obtained. During the reporting period, as shown in Figure 2B, the current CQI value is maintained to determine the priority of the schedule. Since the schedule cannot be scheduled based on the latest information, the user of the most appropriate H) cannot be selected. Reduce the gain of multi-user diversity. Further, it is impossible to appropriately perform link adaptation to the user assigned to the scheduler, and the transmission efficiency is low. [Ming Nai 3 Summary of the Invention] The subject of the present invention is a configuration of a wireless base φ platform and a transmission control method that can perform the most appropriate transmission control when the fluctuation of the c-communication solution with respect to the wireless μ channel is insufficient. In order to achieve the above-mentioned problems, the time elapsed after the feedback report is reported by CQI, etc. • The report-like value ’ is based on the correction value, and the transmission control of the transmission schedule or link adaptation between the plurality of users is performed. 2〇 _ 言, can control the transmission priority with the time elapsed after the feedback report. At this time, the report value is corrected, so that the user who has passed the feedback report: the user with a short time, that is, the user with higher reliability, has higher priority. In addition, the parameters of the key adaptation can be controlled with the elapsed time after the feedback report. The control examples are: 7 200803244 (1) The longer the time passed after the feedback report, the longer it is; (9) The longer the time elapsed after using the feedback report, the less the multi-valued modulation method; (4) The time after the feedback report The longer it is, the more power is sent. 5 #, you can also estimate the moving speed of the mobile station, and correct the elapsed time with the estimated speed. At this time, the elapsed time of the user who moves fast should be corrected to be longer than the actual one. In the first aspect of the present invention, the radio base station includes (a) a feedback report receiving unit that receives the feedback report from the mobile station, and (8) correcting the received feedback report 10 value to a report value and decreasing the elapsed time after the report. The correction report and the feedback report value corrected by (c)i, and the scheduler for transmitting the distribution control. In a preferred embodiment, the scheduler controls at least one of a transmission priority and a link adaptation parameter between the plurality of weeks based on the corrected feedback report value. More specifically, the scheduler controls the transmission according to the previously corrected feedback report, and the longer the elapsed time after the feedback report, the larger the coding rate. Or control the transmission, the longer the elapsed time after using the feedback report, and the less the multi-valued modulation method. Or control transmission, the longer the elapsed time after the feedback report, the greater the transmission power. Or, it is controlled to increase the transmission priority of the user who has passed the response time after the feedback report is increased. In a second aspect of the present invention, the transmission control method has the following steps: (8) receiving a feedback report regarding the downlink from the mobile station; (b) correcting the received feedback report value to be passed after the foregoing report The time is reduced; (C) The transmission allocation control for the aforementioned mobile station is performed according to the feedback report corrected by the above description. ' 8 200803244 Even if the CQI report frequency is low, appropriate link adaptation or scheduling control can be performed. Brief Description of the Drawings Figure 1A shows an example of the scheduling of the time direction. 5 Figure 1B shows an example of the scheduling of the frequency direction. Figure 2A is a diagram for explaining a conventional transmission controller using CQI report values. Figure 2B is a diagram for explaining a conventional transmission controller using CQI report values. • Figures 3(a) and 3(b) illustrate the concept and effects of the present invention in comparison with conventional methods. 10 Figure 4A is a diagram illustrating an application of the multi-user schedule of the present invention. Figure 4B is a diagram illustrating an application of the multi-user schedule of the present invention. Figures 5(a) to 5(c) show the change of the correction function used in the embodiment. Brother 6 (a) map ~ brother 6 (c) map shows the correction function of the cqi report value. Lu 7 is a block diagram showing a configuration example of a radio base station according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 2〇3(b) is a conceptual diagram of the action of the link adaptation to which the present invention is applied. Figure 3(a) shows the concept of the action of the conventional link adaptation of the comparative example. In Fig. 3, in order to maintain the transmission efficiency, the cqi reporting period is set to the frame length of the parent 1 as in the second drawing. In this example, every 4 frames are reported from the mobile station. In the conventional method of Fig. 3(a), in the frame 9 200803244 where the CQI report cannot be obtained, 'the link adaptation is applied because the previous CQI report value is directly used, so a part of the frame is generated. The problem of an increased error rate. That is, in the figure, as shown by the circle, the result is that the deterioration of the official broadcast is still used, and the result of the link adaptation is performed using the previous value of the state in which the display propagation is good, and the most appropriate coding modulation method cannot be selected, and the yield is prone to error. To solve this drawback, in the embodiment of Fig. 3(b), the cqi value is corrected as the time elapsed after the report. In this example, the previously received value is reduced in stages according to each frame until the next CQI report is received. This is due to the fact that Ik’s passing through the day has reduced (7) the reliability. By doing so, as shown by the circle in Figure 3(b), the link can be adapted to the value of the actual propagation state. In addition, the correction is not necessary for each frame, it can be more subtle and less than eight inches, or analogously reduced by a continuous function. Either way, it can solve the problem in the conventional way, and the error rate becomes a problem. 15 Money road adjustment, according to (7) 1 and other feedback report control parameters are compiled _ rate, multi-valued modulation, transmission power. The CQI value (feedback report value) is corrected to the result of the decrease in the reception time, and these parameter values are also controlled over time. For example, the longer the time passed after controlling (1) the feedback report, the larger the coding rate; (2) the longer the time elapsed after the feedback report is used, the less the modulation method with the smaller number of 2〇; (7) The longer the date passed after the feedback report is, the longer the transmission power is, and the error can be reduced. This correction of the CQI value can also be applied to the simultaneous access adjustment of multiple users. Figure 4A and the side display show the correction of the feedback report for multi-use 200803244. Example of 彳 scheduling. As shown in Fig. 4A, the user 2 sends the CQI report to the base station at different times every other side frame. In the period until the next CQI value is reported to the user and the user 2, the correction for the step (10) of the previous reception is reduced. As a result, as shown in the 4th figure, the parameter value for determining the priority of the scheduling between the users of the plural = j is not determined to be lower with time. In other words, the priority of the user who has passed the short time after controlling the report is increased.曰 _ 匕 4 results, in the frame shown in the thick box of Figure 4A, properly select users with good communication. That is, in the frame of the financial aspect, in the conventional method, even if the time passes, the user 2 whose value is high is selected, and the error is increased, and the CQI value is corrected as in the embodiment. In the case of the frame column B, in the case of the CQI value only according to the report, contrary to the actual transmission state, the user is selected, and in the method of the embodiment, the correction value is correctly Select User 2. 15 Figure 5 shows the change in the correction function. In the conventional method, as shown in the figure _ ” (8), the received CQI report value is fixedly used directly during the (10) reporting period of the complex frame. In contrast, in the embodiment, • considering the reception The propagation path deteriorates, and as time passes, the observation value is reduced. The reduction can be reduced in a stepwise manner as shown in Fig. 5(8), and 20 can also be reduced stepwise in an exponential function as in Fig. 5(c). Figure 6 shows an example of further adjusting the correction function. For example, when the correction function of the outline of Fig. 6(a) is taken as the basic shape, the correction function is scaled according to the received report value (the ratio of change) In particular, as shown in Figure 6(b), when the received Cqj report value is large, the rate of change of the positive function of the 200803244 is increased, as shown in Figure 6(c), and the received CQI value is small. The rate of change is stable. Of course, regardless of the magnitude of the received C()I value, it may be corrected by the same ratio. Fig. 7 is a schematic diagram of a wireless base station according to an embodiment of the present invention. Taichung 'CQI receiving department 14 borrowed The antenna 11 and the cyclic write 12 receive the CQI reported from the mobile station. The synchronization unit 1 detects the report time of the CQI to achieve time synchronization. The synchronization time information is supplied to the CQI correction together with the CQI (CQI report value). Section 20. The CQI correction unit 20 corrects the value of the report 1 after the elapse of the reporting time. The correction may be the method shown in the fifth (b) and the fifth (c), or may be based on the CQI value. The method of Fig. 6 is combined. The corrected CQI is sent to the scheduler 21. The transmission buffer 23 transmits the user data or the control data buffer. The monitoring unit 24 monitors the data retained in the transmission buffer and transmits the monitoring result to In the scheduling state 21, the scheduler 21 performs transmission allocation based on the corrected CQI and the monitoring result of the monitoring unit 24. The transmission signal generating unit 22 performs encoding and modulation of the data to be transmitted in accordance with the instruction of the scheduler 21. Then, the transmission power is adjusted and output. At this time, the link adaptation according to the instruction of the scheduler 21 is applied. The transmission RI^p25 converts the transmission signal into an RF signal and outputs it. The RF signal is transmitted through the circulator 丨2, from the antenna. Ii 20 Send. You can also move the mobile station In view of the speed, the CQI is corrected. That is, the radio base station 1 has the speed detecting unit 16 and inputs the measurement result to the correcting unit 2 from the moving speed of the received signal detecting station. Alternatively, the mobile station can detect the moving speed. The measurement results are replaced by the structure of the wireless protocol report. 12 200803244 Riding, CQI correction · The elapsed time of the feedback report is corrected by the moving speed of the mobile station. For example, the elapsed time of the user who is corrected to move fast is longer than the actual. For example, the tilt signal reception, the CQI reception, the CQI report time detection, the movement of the mobile station, the CQI correction, the buffering of the transmission data, the generation of the transmission signal, and the conversion of the correction function are performed for each user. The row (4) 2 determines the parameters for the transmission difficulty between the plurality of users and the link adjustment for the CQI correction value determined by each user. With this structure, when the frequency of the CQI report is low, it is also possible to perform appropriate transmission control by taking the test of the deterioration of the propagation deterioration. This international application claims the priority of Japanese Patent Application No. 2006-115805, filed on Apr. 19, 2006, which is incorporated herein by reference. The diagram is simple and clear; 3 15 Figure 1A shows the example of the schedule in the time direction. Figure 1B shows an example of the scheduling of the frequency direction. Figure 2A is a diagram for explaining a conventional transmission controller using CQI report values. Figure 2B is a diagram for explaining a conventional transmission controller using CQI report values. Figs. 3(a) and 3(b) are diagrams for comparing the concept and effects of the present invention with those of the conventional method. Fig. 4A is a view showing an application of the multi-user schedule of the present invention. Figure 4B is a diagram illustrating an application of the multi-user schedule of the present invention. Figures 5(a) to 5(c) show the change of the correction function used in the embodiment. 13 200803244 Figures 6(a) to 6(c) show examples of adjustments to the correction function based on the CQI report value. Fig. 7 is a block diagram showing a configuration example of a radio base station according to an embodiment. [Description of Main Element Symbols] 10: Radio Base Station 20" CQI Correction Unit 11... Antenna 21... Scheduler 12... Recycler 22... Transmit Signal Generating Unit 13... Receive RF Unit 23... Transmit buffer 14...CQI receiving unit 24...Monitoring unit 15...Synchronization unit 16···Speed detecting unit 25...Transmission RF unit 14