TWI281830B - Initial downlink transmit power adjustment for non-real-time services using dedicated or shared channel - Google Patents
Initial downlink transmit power adjustment for non-real-time services using dedicated or shared channel Download PDFInfo
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- TWI281830B TWI281830B TW093132243A TW93132243A TWI281830B TW I281830 B TWI281830 B TW I281830B TW 093132243 A TW093132243 A TW 093132243A TW 93132243 A TW93132243 A TW 93132243A TW I281830 B TWI281830 B TW I281830B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
- H04W52/343—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading taking into account loading or congestion level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
- H04B7/2631—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for broadband transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Transmitters (AREA)
Description
1281830 五、發明說明(1) 發明所屬之技術領域 ^發明關於蜂巢式網路内之初步下鏈傳輸功率的調 ;以;特定言之係關於調整非即時服務之初步下ί傳:功 曰進该服務之感受品質。 先前技術 之物:服務之突發性本質,用於nrt服務 說,半’、、_也疋突發而短暫的。就每一種配置來 品質、輪功率之準確度對於此配置之服務的感受 牛下“言碼塊錯誤率(bler)相當重要。當今而言,初 ί測ΐίΐϊί係由控制無線電網路控制器(c-RNC)依據 大 可取传性利用兩種不同架構估計。 因素,^ = 11減、機動性、量測值報告延時、及錯誤等 (sin所:二傳/功率可能顯著異於支㈣ 於實π V西果際而要的功率。倘若初步下鏈傳輸功率顯著低 要SIRV這备功告率;Λ配置起始時間内的實際SIR會遠低於必 是短暫的,、"午多傳輸錯誤。由於NRT服務之配置通常 法在短暫配在配置起始時間内遭遇到的錯誤可能無 专配置持績期間攤分以符合必要BLER。 發明内容 本發明提出一 步下鏈傳輪功率以 一種用來對一 種用於蜂巢式網路調整非即時服務之初 增進所感受服務品質的解決方案。 無線通信網路内之非即時服務進行初步
1281830 五、發明說明(2) 下鍵傳輸功率★用φ^·,, 鏈傳輪功率位^ T秋後^ 估計非即時服務之—初步下 較。判斷該估計功;ΐ;::::”位準與:間值做比 (cells)。倘若一^加是否會影響相鄰胞元 調整該初步下鏈傳輸V率:準影響相鄰胞元,則以-預定量 下鏈二 = = = 初下步 鏈傳輪功率位準。斗曾一士 I7守服務之一初步下 比較。以比較社果槽载波功率且與-間值做 比較所用間值;ϊΐ 周正該初步下鏈傳輸功率。以該 持於初步設定值 可將該初步下鏈傳輸功率加大或維 實施方式 士第1圖為一由c-RNC估計初步下鏈傳輸功率之一方法1〇〇 、机私圖,該C-rnc使用一全量測值型演算法或一公用量測 值^演算法。全量測值型演算法係在有專用及公用量測值 I供予RNC時使用,而公用量測值型演算法係在僅有公用量 、J值了供予題C時使用。方法1〇〇始於由c — rnc估計NRT服務 之初步下鏈傳輸功率(步驟1 〇 2 )。以估計的初步下鏈傳輸 功率與一閾值做比較(步驟1 04 ),且倘若該估計功率高於 该閾值即終止該方法(步驟丨0 6 )。 门、 倘若該估計功率低於該閾值(步驟1 〇 4 ),則判斷初井 下鏈傳輸功率之一增加是否會使相鄰胞元内的服務明顯劣 化(步驟1 0 8 )。倘若相鄰胞元内之服務會明顯劣化,則不
第7頁 五、發明說明(3) 做功率調整,且終止該方法(步 胞元内之服務不會明顯次仆 ;。但’倘若一相鄰 而定使該初步下鍵二::加;!=°4中遭遇之間值 後終止該方法(步驟丨0 6 )。 、疋里(步驟1 1 〇 )。然 直覺上來說,在條件許可去 功率會增進性能。在一膏祐☆丨^週田地加大初步下鏈傳輸 滿足下列條件之時會被加大··',仞步下鏈傳輪功率僅在 1 )經C-RNC估計之初步下金皋值 2)初步下鏈傳輪功率之增:功奋率低於-特定閎值。 顯劣化(舉例來說,造成曰 曰使相鄰胞兀内之服務明 鄰基地台(BS)之载波况)。此效應可藉由一相 亦可妒初牛ίΪ ί 或糟由下鏈干擾予以測定。 與其相關力值。每-閣值有-取決於NRT服務之必要BLE里、加里及邊等閾值之值亦 誤之容差之一指標因為必要BLER係為初步傳輪錯 一用來解決WCDMA Trm i +
輸功率問題的解決方宰干=口之NRT服狀 估計NRT服務之初步下輸眾。:=00始::C,C 計時槽載波功.Τι, 上目前時槽載波功率之伯 估气日n f率T低於一特定閾值(步驟204 )。倘若. 鏈傳‘ ::ί率,j:於最小β節點載波功’,則加大初步 上—=1率使付總時槽載波功率等於最小Β節點載波功率 數了 值MarginlQw (步驟2〇6) QMargin_ 是一設計參 ό、型值在2-5 dB範圍内。必要BLER之值越低、 1281830 五、發明說明(4)
Margin-之值越高。然後終止該方法(步驟2〇8 / 倘若該估計時槽載波功率大於最小β節點載波功率但小 於一載波閾值(ThreS()wn—Capwr ;步驟2〇4 ),則判斷相鄰胞元 之平均呀槽載波功率是否低於一特定閾值 / ^ η Λ 口 ^ ^llireSNeighbor.CaPwr (步驟210)。另-遥擇’可利用此無線發射/接收單元 (WTRU)在此胞^之時槽内的干擾信號碼功率(iscp)
ThreSNeighbor_丨SCP。這些閾值係由B節點之最大容許時槽載波 率以fNRT服務之必要BLER聯合決定。最大容許時槽載波功 率越咼、該等閾值會越高。此外,必要BLER之值越低、該 等閾值會越高。 平Ϊ時槽載波功率低於ThreS~·,加大初步 下鏈傳輸功率使得總時槽載波功率等於下述之較大者.最 =節點載波功率加上-邊際值Margin‘,或原始估計總 k槽載波功率加上一邊際值MargirWnai (步驟212)。
Marg i nmedium被決疋為一使得因最小b節點載波功率加上
Marginmedium而造成之干擾不會導致一相鄰胞元之時槽載波 f率接近其最大容許值的最高邊際值。Margin〇ngi㈤被決定 為一使得因在ThreS〇wn_CaPwr水準之b節點載波功率加上
MarginQriginal而造成之干擾不會導致一相鄰胞元之時槽載波 功率接近其最大容許值的最高邊際值。然後終止該方法 (步驟208 )。 在步驟210中,倘若相鄰胞元之平均時槽載波功率大於 ThreSNeighbQr_CaPwr,則不對初步下鏈傳輸功率進行調整(步驟 214)且終止該方法(步驟208 )。倘若估計時槽載波功率
1281830 五、發明說明(5) ' --- 大於載波功率閾值(ThresGwn CaPwr ;步驟204 ),則不對初步 下鍵傳輸功率進行調整(步驟214 )且終止該方法(步驟乂 2 0 8)。 應理解到在方法200中使用之所有參數(亦即邊際值和 f值)與BLER直接或間接地相關。實務上來說,所有參數 得經由模擬或現場測試/試驗予以微調。 ^ 第3圖係一用於非即時服務之初步下鏈傳輸功率調整之 一實施例的方塊簡圖。一C-RNC 30 0接收NRT資料。一媒體 存取控制器308安排NRT資料以供傳輸。c_RNc 3〇〇亦有: 來決定該等NRT資料之一初步傳輸功率位準的初步NRT 功率決定裝置3 1 0。 已排程NRT資料被送到B節點3〇2進行實體層處理31 2使 其格式化以供經由空氣介面306傳輸。一初步NRT傳輸功率 調整裝置314如前所述調整初步傳輸功率位準估計值。已 整的初步傳輸功率位準判斷被用於調整一放大哭3丨6之掸 益。已放大的NRT信號由-天線318或—天線陣二經由空^ 介面放射。WTRU 304利用其天線32〇或天線陣列接收該 N R ΊΜ5號且利用一 N R T接收器3 2 2復原該n R τ資料。 雖說以就圖式和文字說明本發明之特殊實施例,孰習 此技藝者可不脫離本發明之範圍做出許多修改和變型。以 上說明僅為範例,不以任何方式限制本發明。
1281830 圖式簡單說明 第1圖為非即時服務之初步下鏈傳輸功率調整之全面策略之 一流程圖;且 第2圖是一將第1圖所示策略施行於寬頻分碼多重存取 (WCDMA )分時雙工(TDD )系統的流程圖。 第3圖係一利用非即時服務之初步下鏈傳輸功率調整之系統 的方塊簡圖。 元件符號說明:
302 B節點 306 空氣介面 308 媒體存取控制器 310 初步NRT傳輸功率決定裝置 312 實體層處理 314 初步NRT傳輸功率調整裝置 316 放大器 318、 320 天線 322 NRT接收器
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Claims (1)
1281830 六、申請專利範圍 1 · 一種用來對一無線通信網路内 士 鏈傳輸功率調整的方法,苴包.、p日^服務進行初步下 ::::即時服務之-…鍵準; 以估汁的功率位準與一閾值做比較; 判斷該估計功率位準之一增加备 劣化;以及 否_使相鄰胞元内之服務 以該判斷步驟為基礎,以一預 率位準。 疋里调整该初步下鏈傳輪功 2鏈對:無線通信網路内之非即時服務進行初步下 =功率調整的方法,其包括以下步驟: 非即時服務之一初步下鏈傳輸功率位準; ^异一估計的時槽載波功率; 以该估計時槽載波功率與一閾值做比較;以及 以比較結果為基礎調整該初步下鏈傳輸功率。 估叶::專利耗圍第2項之方法’其中該計算步驟包含將該 4 i由Y下鏈傳輸功率加至一目前時槽載波功率。 兮專利範圍第2項之方法,其中該比較步驟包含比較 ”率與一 B節點之~最小載波功率位準。 該初牛π利範圍第4項之方法,其中該調整步驟包含增加 ^栗=下鏈傳輸功率,藉此使總载波功率等於該最小载波 刀年加上一邊際值。 利範圍第2項之方法’其中該比較步驟包含判斷 準且ί:載波功率是否大於一β節點之-最小載波功率位 旱且小於一載波功率閾值。
第12頁 1281830 六、申請專利範圍 7. 如申請專利範圍第6項之方法,其中該調整步驟包含: 判斷相鄰胞元之一平均時槽載波功率是否小於一閾值;以 及 倘若該平均時槽載波功率低於該閾值,則增加該初步下鏈 傳輸功率,藉此使總載波功率等於以下二值當中較大者: 該最小載波功率加上一第一邊際值,及該估計時槽載波功 率加上一第二邊際值。 8. 如申請專利範圍第2項之方法,其中該比較步驟包含比較 該估計時槽載波功率與一載波功率閾值。
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US51769803P | 2003-11-05 | 2003-11-05 | |
US10/725,789 US7239885B2 (en) | 2003-11-05 | 2003-12-02 | Initial downlink transmit power adjustment for non-real-time services using dedicated or shared channel |
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TW094114800A TW200623908A (en) | 2003-11-05 | 2004-10-22 | Initial downlink transmit power adjustment for non-real-time services using dedicated or shared channel |
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EP (1) | EP1687912A4 (zh) |
JP (1) | JP2007512736A (zh) |
KR (2) | KR20060096102A (zh) |
CN (1) | CN1875553A (zh) |
AR (1) | AR046365A1 (zh) |
CA (1) | CA2544696A1 (zh) |
MX (1) | MXPA06005009A (zh) |
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2003
- 2003-12-02 US US10/725,789 patent/US7239885B2/en not_active Expired - Fee Related
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2004
- 2004-10-21 KR KR1020067013690A patent/KR20060096102A/ko not_active Application Discontinuation
- 2004-10-21 EP EP04795847A patent/EP1687912A4/en not_active Withdrawn
- 2004-10-21 CN CNA200480032627XA patent/CN1875553A/zh active Pending
- 2004-10-21 KR KR1020067010927A patent/KR100752567B1/ko not_active IP Right Cessation
- 2004-10-21 CA CA002544696A patent/CA2544696A1/en not_active Abandoned
- 2004-10-21 WO PCT/US2004/034740 patent/WO2005048030A2/en active Application Filing
- 2004-10-21 JP JP2006539529A patent/JP2007512736A/ja not_active Withdrawn
- 2004-10-21 MX MXPA06005009A patent/MXPA06005009A/es unknown
- 2004-10-22 TW TW093132243A patent/TWI281830B/zh not_active IP Right Cessation
- 2004-10-22 TW TW094114800A patent/TW200623908A/zh unknown
- 2004-11-05 AR ARP040104066A patent/AR046365A1/es active IP Right Grant
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US20050096075A1 (en) | 2005-05-05 |
EP1687912A4 (en) | 2006-12-27 |
US20070225027A1 (en) | 2007-09-27 |
TW200623908A (en) | 2006-07-01 |
WO2005048030A3 (en) | 2005-11-17 |
JP2007512736A (ja) | 2007-05-17 |
US7239885B2 (en) | 2007-07-03 |
NO20062559L (no) | 2006-08-02 |
AR046365A1 (es) | 2005-12-07 |
CA2544696A1 (en) | 2005-05-26 |
TW200529681A (en) | 2005-09-01 |
EP1687912A2 (en) | 2006-08-09 |
WO2005048030A2 (en) | 2005-05-26 |
KR100752567B1 (ko) | 2007-08-29 |
KR20060096102A (ko) | 2006-09-05 |
KR20060096507A (ko) | 2006-09-11 |
WO2005048030A9 (en) | 2006-07-13 |
CN1875553A (zh) | 2006-12-06 |
MXPA06005009A (es) | 2006-07-06 |
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