TWI357732B - Method of determining overhead signaling and radio - Google Patents

Method of determining overhead signaling and radio Download PDF

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TWI357732B
TWI357732B TW097120650A TW97120650A TWI357732B TW I357732 B TWI357732 B TW I357732B TW 097120650 A TW097120650 A TW 097120650A TW 97120650 A TW97120650 A TW 97120650A TW I357732 B TWI357732 B TW I357732B
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measurement
request
radio resource
subset
allocation
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TW097120650A
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TW200917687A (en
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E Terry Stephen
G Dick Stephen
M Miller James
Zeira Eldad
Zeira Ariela
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Interdigital Tech Corp
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/543Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/20Monitoring; Testing of receivers
    • H04B17/24Monitoring; Testing of receivers with feedback of measurements to the transmitter
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/30Monitoring; Testing of propagation channels
    • H04B17/309Measuring or estimating channel quality parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/30Monitoring; Testing of propagation channels
    • H04B17/382Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026Transmission of channel quality indication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027Scheduling of signalling, e.g. occurrence thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/56Allocation or scheduling criteria for wireless resources based on priority criteria
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management

Description

1357732 九、發明說明: 【發明所屬之技術領域】 本發明關於無線通訊系統。尤其是,本發明係關於使用分 碼多工存取(e〇de-division multiple access,CDMA)技術之通訊 站。本發明特別是關於決定用於有效利用無線資源使用率及選 擇使用者服務之資料速率之無線狀況。 【先前技術】 於分碼多工存取第三代(3G)細胞通訊系統中,適應性調變 及編碼技術(adaptive modulation and coding , AM&C)被應用於 傳輸以便達成改善的無線資源使用率,並在適當的狀況下提供 增加的使用者服務資料速率。這些AM&C技術預先將無線傳 輸狀況列入考慮’以便決定從使用這些技術之目前無線傳播情 況中獲得有益之調變及編碼速率。 於使用這些AM&C技術時,需要在每個傳輸之前,從接 收器和:供實體頻道品質測量的程序。基於此品質測量,傳輸器 決定特定傳輸之適合的調變及編碼速率。 於CDMA系統中’如同以任何無線系统,無線狀況可能 因為自然或人為狀況二者的廣泛變化而快速改變。因為頻道品 質測良被用以決定傳輸調變及編碼,且因為傳輸路徑之情況改 變所產生之頻道品質之快速改變’適紐傳輸處理係直接與頻 道品質測量之時間與傳輸開始之時間之_時間週期長度有 關0 iS] 實體或邏輯控趣道隨倾用崎倾 益傳輸至傳齡。親 (userequipment, ue)專用的控制頻道或由所有卿 叹備 共旱之共用控制頻道。UE可1:2 3 4 a !_、
Phone),PDA(個人資料助理)或其它型 二二: 二 == 子在AM&C之理想解決方案,因為品 貝列里持,,的存在。考慮龄的靖 & :品質測量,傳輸可以在任何時後發生。因 存在耻彳潮(uplink财式,_可峨肋 低逮率上行連結資料傳輸。 又孖 的時獅道雜關難姐,即使在沒錢料傳輸 技術之主要應用是非 夺回貝料速率服務,例如,網際轉存取 =:咏品質_以短的,具相當長的傳輸二 ^週摘達成。這些長關置週誠生專㈣源使用的低效 此問題可以藉由預先規__翻頻道配置而被降至 2。但產生品質測量之週期性的存在。如果品質測量未連續 =在’對於在任意時間產生傳輪之UES *言,只有某些版 將具有最近的頻道品質測量。 另-方式是制控侧道的使用。以制空制頻道的使 用,存在-個由細胞内所有UES 之連續訊號頻道。決定 母UE對共同控制頻道存取的程序被定義。顶識別被 1357732 用以區分航的業務。支援AM&C之制㈣方法的困 難在於測量每-UEs對控制頻道存取所需之大量的訊號經常 11費用。如如所述,UE識別是需要的以便區分证特別的業
務。因此’為避免對上行連結共用控制親之以競爭為基 礎之存取,在下行連結(ci〇wnlink)共用控制頻道上之每一版 存取之個耻置需要發訊號。@為上行連結並非總是可預期 的’坊連結控制鮮之週雛配置必齡下行連結控制頻道 上發訊號’其產生相相當的發訊號祕常性費用。同時,丘用 控制方法不提供低速率,上行連結資料傳輸。 八
际公言之,AM&C „ — 仪何心双平王要是基於事先來自接收 :之母-傳輸器之最近實體頻道品質測量的效益。較佳者,測 董以具有動態資料傳輸之所有使用者之最小延遲而存在。此專 =控制頻道解決方法提供連續_量,但因為傳輸是不連續 :頻tit源之制是沒有效率的。週期性設計的專用控
押制源需求為最少’但這增加了測量的延遲。共同 二_道料可以麵續或職蘭上提 _經常性費财生無無效率朗。—似私 而要能夠提供具有低輯及低職標記經常性費用之方 【發明内容】 者設Α的無線數位通㈣統包含—倾複數個使 ^備仃動終端(UEs)進行通 指定1^Γ^:ΤΤ ^ 此系統優先處理 改盖t的—些行動終端的下行連結資料區塊, 改善無線資源使用效率並改善使用者服務日夺 鬼 用 以便 需要的資料速率
C 至最佳狀態。下行賴(DL)資料_錄地台魏 來自具有處理中之下行連結傳輪之行動終端 結 道品質測量:料胞藉由崎細報DL頻道品肢基地^ 而回應,求’其隨後配置貧源’因此該等UES將具有益線 資源之最佳使用。該基地台’ _ UES所傳輸之下行連结資 料區塊之雜之後,指示婦_迷率及被配置 實 體頻道配置至該等UEs。 本發明之目的係藉透過參相_式而變得更清楚,其 中: 〆、 第一圖係本發雜佳之動_道品質啦料(dy_ic channel qUali—agement ㈣—代,加糊 第二圖表示第一圖所示之本發明之DCQMP之另-實施 例。 ' 所示之較佳實施例於下文參照所附圖式而被描述,其中相 同的標號始終代表相同的元件。 【實施方式】 第一圖係本發明動態頻道品質(channel quality,CQ)測量 程序60之流程圖,其可藉由具有與至少一使用者設備,以下 係以UE 30代表,通訊之基地台/點B(以下稱基地台12)無線 數位通訊系統實施。雖然所呈現之發明方法意於支援一基地台 與複數UEs之間的通訊,為簡要說明之故,以下之描述將詳 細說明由單一 UE所執行之步驟;(可了解的是所有其它 1357732 將以相同方式運作)。下行連結(DL)資料被傳輸至指定給一特 定UE 30之基地台12(步驟S1)。 基地台12回應下行連結資料之接收並於傳輸之顶刈之 前要求僅來自具有未決之向下傳輸之一 UE 30之DL CQ測量 (步驟S2)。 UE 30在步驟S3接收該要求並於步驟S4回報該DL CQ 測量至基地台12。
基於從每一 UE接收之CQ測量報告(步驟S5),基地台12 決定那一 UEs將具有最佳的無線資源使用效率,並決定使用 那一時槽(slot)(步驟S6)。較佳者,此UEs藉由其cQ而被排 列優先-人序,因此,具有最高CQ之ue首先被傳送資料,然 後具有第二高Cq的UE接著被傳送其資料,依此類推,直到 具有最低CQ之ue的資料最後被傳送為止。
因為CQ測量要求及回應的CQ報告只在需要時產生,共 用控麵柄需之魏發駿常性冑料大幅降低。測量報告 為所有活動中的傳輸使用者而存在,類似專用控制頻道,但i 免了在閒置週期中之資源的無效率使用。 傳輸的優先次序依據DL CQ測量而決定,且沉實 號至適合的版,指示特定的編碼速率,調變型態 及^置(步驟S7)。被指定的UE接收該編碼速率,調變 及配置時槽(步驟S8),並設定這些接收用之參數(步驟 在竭S7之執行後—歡(但是辦間)時間後,下行連 9 1357732 結資料之區塊隨後由基地台12傳送至被指定的UE 3〇(步驟 S10),以致能UE30之接收用之時間設定。证昶在特定的編 碼速率,調變型態以及於步驟S7所指定之配置時槽中接收下 行連結資料。
—本發明目此提供AM&Cii作所需之基礎絲轉持無線 資源之使最大使用效率。因為DL CQ測量以所有傳輸之最小 的可能延遲而存在,於下-傳輪時間框巾被提供服務之一或多 位使用者義擇可⑽到最佳。料,㈣雛錢續機制提 供之測量不提供比本發明增加的利益,效能增益或加強。 本發明之實施也制量程稍理及相_消耗功率為最 =,對-般由限制容量之小解_卩,—充電電池)所供電之 尤其重要。因為品質測量僅為—特定的活動傳輸而被要 求’所需之糙量的數目可被降至最小。 〜依獅二_示之本發明另_實施例之方法%,僅
=數量的測量’依據-特定傳輪所使用之無 如’在3G標準中,僅為特定實體時槽之⑶可 令 測量之需求於活動傳輸以及,依據傳輸之尺寸 貧源(亦即,特定之時槽)上之測量,所執行之, 以降低。這被表示於第二圖,其類似第-圖,除了 …A之外,其分別 之除 興S3。於步驟S2A,基地台 口 ^ 線資源上執行測量。回應該要求僅於「特定無 行DL CQ測量(步驟S3^)。 ,疋的無線貧源上執 本發明在習知技術上提供許多優點。首先,本發明提供空 I £ 10 費用為最小 氣介面之最高有效率的使用,因為对轉具有未完成傳輪之 服將,要回應DL CQ測量之請求。這允許發訊號之經常性 其次/ 為傳輪係依據最高品質DL CQ測量而被排安排 優次序’每—時槽或多時槽之可允許的最冑資料速率將可被達 成。 第三,因為UEs僅需回應DLCQ測量之請求,將不需要 UEs之不需要的測量,藉此節省電池壽命。 <本發明之最後優點在於此處所齡之方法的細胞中所能 支板之使用者數目㈣加。被支援之使用者的數目於專用控制 頻道方法巾被翻無線#源之需求所限制;而於共用控制頻道 方法中被發訊叙、經常性費用需求所限制。藉由限制對活動使 用者之測畺發§fL號程序,本發明使共用控制之發訊號經常性費 用為最小並支援細胞中最多的使用者數目。 雖然本發明以最佳實施例而被描述,其它落入如申請專利 範圍中所描述之本發明範圍之變化對熟悉本技藝之人士而言 將是明顯的。 【圖式簡單說明】 第一圖為本發明較佳之動態頻道品質測量程序(dynamic channel quality management procedure,DCQMP)之流程圖。 第二圖表示第一圖所示之本發明之dcqmp之另一實施 1357732 【主要元件符號說明】 12 :基地台 UE30 :使用者設備 60 :動態頻道品質(channel quality,CQ)測量程序
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Claims (1)

1J3/ /JZ 十、申請專利範圍: 100年12月5日修正替換頁 號樑 1. 一種決定經常性費用訊 法包括: 記與無線電資源使用的方法 ,該方 該複數 决疋複數使用者攻備行级 的—第二子集合,該複數UEs不具有未決的 脳具有未決的下行連結傳輪;柳S)的第子集5, 決定該複數UEs ’ 下行連結傳輸; 質^,啼行一頻道品 從在該第一子集合中的每— 行一 CQ測量的該請求。 UE接收CQ測董結果,以回應實 2.如申請專娜圍第丨酬叙方法,更包括: 接收關聯於該未決的下行連結傳輸的下行連結資料; 以sfU虎發送無線電資源的一分配至該第一子集合中的每— UE,以回應該CQ測量結果;以及 依照無線電資源的該分配傳輸該下行連結資料至該第一子集 合中的該UEs。 ^ 3. 如申請專利範圍第2項所述之方法,其中無線電資源的不同分 配被以訊號發送至該第一子集合中的不同UEs。 4. 如申請專利範圍第2項所述之方法,其中實行—CQ測量的該 請求被傳輸至該第一子集合中的每一 UE’以回應該下行連結資料 的接收。 5·如申請專利範圍第2項所述之方法,其中無線電資源的該分配 包括一編碼速率以及一調變型態的至少其中之一。 13 100年12月5日修正替換頁 更包括! ~ --— 會對無線電資源做最佳使 6.如申請專利範圍第2項所述之方法 、疋。亥弟一子集合中的哪一個UE 用。 7. 如申請專利細第2項所述之方法,更包括: 行子集合巾的_s應__時槽,崎收該下 8. 如申請專利範圍第2項所述之方法,其中該第一子集合中的該 =執行CQ測量’直到所有接收的下行連結資料已被發送至該 第一子集合中的該UEs。 9· 申請專利範圍第1項所述之方法,其中實行一 CQ測量的每 一凊求經由一共用控制頻道或一專用控制頻道被傳送。 1〇.如申請專利範圍第1項所述之方法,其中實行一 CQ測量的每 一請求指示至少一特定無線電資源,接收該請求的一 UE將對該 至少一特定無線電資源執行該CQ測量。 U. 一種決定經常性費用訊號標記與無線電資源使用的方法,該方 法包括: 接收下行連結資料; 傳送一請求,以實行頻道品質(CQ)測置, 接收一 CQ測量結果,以回應該請求; 以訊號發送無線電資源的一分配,以回應接收的CQ測量結 果;以及 依照無線電資源的分配傳送接收的下行連結資料。 12, 如申請專利範圍第u頊所述之方法,其中無線電資源的該分 配包括一解碼速率以及一裯變塑態的至少其中之—。 13. 如申請專利範圍第n頊所述之方法,其中實行一 CQ測量的 1357732 100年12月5曰修正替換頁 每叫求、,二由一共用控制頻道或一專用控制頻^被傳送τ 一-- H主如申明專利範圍第11項所述之方法,其中實行一 CQ測量的 °玄°月求心不至少一特定無線電資源,而該CQ測量將被執行於該 至少一特定無線電資源。 15· 一基地台,其包括: 接收器,其配置為接收下行連結資料; 上傳送器’其配置為傳送一請求,以實行一頻道品質(cq)測量; :亥接收f更被配置為接收CQ測量結果,以回應該請求;以及 該^送器更被配置為以訊號發送無線電資源的分配,以回應該 、Q則罝、°果並依照無線電資源的該分配傳送接收的下行連結資 才斗。 、〇、 16. 如申請專利範_ ls項所述之基地台,其中無 分配包括-解碼速率以及一調變型態的至少其中 17. 如申請專利範圍第15項所述之基地台,/复 一共用控制頻道或一專用控制頻道被傳^測量 18. 如申请專利範圍第15項所述之基地台,其 ―疋 的喊請求指示至少—特定無線電資源’而該 CQ測1 該至少-特定無線電資源。 里將被執行於 該方 19. 一種決定經常性費用訊號標記與無線 法包括: “雜_方法, 接收一請求,以提供一 CQ測量報告; 傳送一 CQ測量報告,以回應該請求; 接收根據傳送的CQ測量報告的無線電資源的一分 依照無線電資源的該分配接收下行連結資料j 以及 20. 如申請專利範圍第19項所述之方法, …、深电貝溽的該分 15 1357732 I 100年12月5日修正替換頁 配包括一解碼速率以及—調變型態的至少其中之-- ^請專利範圍第19項所述之方法,其中提供一㈨測量報 二的t德由—共馳織道或—相控㈣道被接收。 止的利1ί圍第19項所述之方法,射提供一 cq測量報 厂知曰不至少—特定無線電資源,言亥CQ測量是基於該至 少一特定無線電資源。 Y 23.種使用者設備行動終端(ue),其包括·· 報土接收1其配置為接收一請求’以提供一頻道品質(CQ)測量 以回應該請求; 以及 -傳送器’其配置為傳送—CQ測量品質報告, /接收器更被配置為接收根據傳送的购^ 源的一分^並依照無線電資源的該分配接收下行連結資料貝 24·如申5月專利蛇圍第23項所述之UE,其中益線電資 配包括一解碼速率以及一調變型態的至少其中^貝原的5亥刀 =每23項所述之证,其中提供一 CQ測量報告 Λ 帛控侧道或㈣舰被傳送。 ,其中提供—_量報告 -無線電資源/祕電㈣,該CQ測量報告是基於該至少 1357732 100年12月5日修正替換頁 • 十一、圖式: 60 S11 S9 S8 S4 S3 办!®
UE 30. 12 S7- S6 S5 S2 S1 1357732 S11 S9 S8 S4. 100年12月5日修正替換頁 70
GO3A-IJ -酬 壽.¾馨獎 SI ό 11¾ S7 -S6 回幸gDLCQ至Ϊ地台 韹葙 wui s津 難 nm UE30 1 DL Co 鄉^DLQCis 響0> SCJ1· \C0 S1 12
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