TWI618373B - 用於接收協調式多點傳輸之使用者設備 - Google Patents
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Abstract
增強型基地台及透過增強型分散式天線系統(eDAS)通信之方法的實施例會廣泛的在本文中描述。該增強型分散式天線系統包括了地理上分離的天線節點,而每個天線節點有複數個天線元件。基地台會在集中處理地點,對每個天線節點執行實體層基頻處理,且可能使該等天線節點根據多工方案傳送參考信號,來允許使用者設備對任一或更多個該等天線節點的天線元件執行頻道估計。該基地台也可能使天線節點傳輸具有同步代碼的信號,以允許該使用者設備和任一或更多個該等天線節點的天線元件同步。在某些實施例中,該基地台可以透過實體層介面和天線節點通信。
Description
實施例屬於無線通信領域。某些實施例與使用分散式天線系統來與使用者設備通信的基地台有關。某些實施例與根據3GPP LTE演進統一陸地無線接取網路(Evolved Universal Terrestrial Radio Access Network,E-UTRAN)無線接取技術(RATs)及其演化的網路有關。有些實施例與根據IEEE 802.16無線接取技術及其演化的WiMAX網路有關。
傳統的分散式天線系統是空間上分離、連結到一個共同來源的天線之網路,透過傳輸媒介,在地理區域(例如胞元)或建築(如室內覆蓋)內提供無線服務。一個在移動通信系統中使用傳統分散式天線系統的問題,就是該基地台與天線之間的介面並未標準化,使得傳統分散式天線系統很難完全支援和利用某些目前和即將到來之先進通信技術無線標準的好處。
因此,對可更完全的支援及更完全的利用某些目前和
即將到來的無線標準中之先進通信技術的增強型天線系統和通信方法有廣泛的需求。
100‧‧‧增強型無線接取網路
102‧‧‧增強型分散式天線系統基地台
104‧‧‧天線節點
110‧‧‧接取閘道
106‧‧‧天線元件
101‧‧‧S1介面
108‧‧‧胞元
112‧‧‧使用者設備
103‧‧‧X3介面
300‧‧‧資訊欄位
301‧‧‧傳呼群組識別欄位
302‧‧‧胞元識別欄位
304‧‧‧天線節點識別欄位
310‧‧‧代碼結構
315‧‧‧子空間
312‧‧‧eNB子空間
314‧‧‧天線節點子空間
311‧‧‧子空間
502‧‧‧各天線節點調變與編碼調適
504‧‧‧各天線節點多重輸入多重輸出處理
506‧‧‧各天線節點與資源對應
508‧‧‧實體層信號
508A,508B‧‧‧實體層信號
600‧‧‧多工方案
601‧‧‧參考信號
602‧‧‧分碼多工代碼
604‧‧‧時段
606‧‧‧子載體頻率
702‧‧‧增強型分散式天線系統基地台
704‧‧‧天線節點
708‧‧‧火車軌道
802‧‧‧增強型分散式天線系統之增強型節點B
804‧‧‧天線節點
圖1根據某些實施例描述增強型無線天線網路(eRAN)。
圖2根據某些實施例描述增強型分散式天線系統(eDAS)與eDAS網路架構。
圖3A根據某些實施例描述同步代碼劃分。
圖3B根據某些實施例描述代碼結構。
圖4根據某些實施例描述圖1中增強型無線接取網路的各種功能元件。
圖5根據某些實施例描述增強型分散式天線系統基地台中的下行鏈路實體層處理執行。
圖6根據某些實施例描述參考信號多工方案。
圖7為根據某些實施例的增強型分散式天線系統基地台被組態來沿火車軌道運作範例;且
圖8A、8B及8C根據某些實施例描述各種天線節點流動性情況。
以下的描述和圖示充分地描述特定的實施例,來使熟悉此領域之技術者能夠實施它們。其他實施例可能併入結構的、邏輯的、電子的、過程和其他改變。某些實施例的
部分和特徵可能被包含在其他實施例中,或可被其他實施例取代。在申請專利範圍所闡述的實施例包括所有申請專利範圍所提供的等效者。
圖1根據某些實施例描述增強型無線接取網路(eRAN)。該增強型無線接取網路100可能包含一個或更多增強型分散式天線系統(eDAS)基地台102,每一個基地台被組態來在關聯的胞元108中服務使用者設備(UE)112。每個增強型分散式天線系統基地台(102)可能利用增強型分散式天線系統(eDAS),其包含複數個地理上分開的天線節點104。每個該等天線節點104可能有複數個空間上分開的天線元件106。至少該等天線節點104不被放置於與該增強型分散式天線系統基地台102相同的位置,且被設置在該胞元108中的不同位置。
在某些實施例中,該增強型無線接取網路100可能包含與接取閘道110通信的傳呼群組中至少兩個或更多增強型分散式天線系統基地台102。該傳呼群組中的該等增強型分散式天線系統基地台102可能被組態來透過S1介面101與該接取閘道110通信。該傳呼群組中的該等增強型分散式天線系統基地台102可能被組態來透過X2+介面109直接通信。每個增強型分散式天線系統基地台102可操作為它的關聯胞元108之處理中心,且可能被組態來透過實體層X3介面103與該等天線節點104通信。
根據實施例,該增強型分散式天線系統基地台102可使天線節點104根據多工方案傳送參考信號,來允許使用
者設備112對於任一或更多個天線節點104的天線元件106執行頻道估計。該增強型分散式天線系統基地台102也可使該等天線節點104傳輸同步代碼,來允許使用者設備112與任一或更多個該等天線節點104的天線元件106同步。
據此,該使用者設備112可獨特地辨別該等天線節點104,以及天線節點104中任一所屬的該單一天線元件106,來做頻道估計與同步。如圖示一所描述,某些使用者設備112可能在相同胞元108中被該天線節點104所服務,同時某些使用者設備112可能被自不同胞元108的天線節點104所服務。每個胞元108可能與地理區域有關聯。
根據實施例,在該增強型分散式天線系統基地台102與該等天線節點104中間的該X3介面103,可能被標準化來允許該增強型分散式天線系統基地台102完整支援,並且利用目前和即將到來之無線技術中的一些先進技術,例如單一使用者(SU)和多重使用者(MU)多輸入多輸出(MIMO)(例如SU-MIMO和MU-MIMO)之通信技術。
在某些實施例中,該增強型分散式天線系統基地台102可以是合作式無線接取網路架構的一部分,其提供了增強特徵以便在顯著的減少複雜度和耗電量下,給涵蓋、效能、和可靠度上帶來顯著的改善。在這些實施例中,可以克服穿透與遮蔽損失,所以可能消耗較少的能量,因為視線範圍(line-of-sight)頻道可能存在,導致衰落深度
(fading depth)減少與延遲擴展(delay speead)減少。使用者設備112的傳輸功耗可因此被減少,結果即帶來更高效節能的上行鏈路操作和更低的電池消耗。
在某些實施例中,每個天線元件106可以是單獨天線,以及可以被有效的與其他的天線節點104之該等天線元件106分開,來利用空間分集之優點,利用和該等天線元件106各者和該使用者設備的一個或更多該等天線間的不同頻道特性之優點。在某些實施例中,天線元件106可被分開高至十分之一個波長或更多。
在某些實施例中,該增強型分散式天線系統基地台102可能是增強型分散式天線系統增強型節點B(eNB),其組態來根據3GPP LTE E-UTRAN的其一標準(如LTE版本10)運作。在其他的實施例中,該增強型分散式天線系統基地台102可能是WiMAX基地台,其組態來根據IEEE 802.16的其一標準(如IEEE 802.16m)運作。
圖2根據某些實施例圖示增強型分散式天線系統(eDAS)eDAS網路架構。該增強型分散式天線系統基地台102可透過該X3介面103,使用兩個或更多天線節點104(天線節點Ai和Aj)與該使用者設備112通信。如圖2所示,每個天線節點104可能包含複數個天線元件106(如圖示中天線節點Ai之Ai1到Ain,及圖示中天線節點Aj之Aj1到Ajn)。根據實施例,每個胞元108(如圖1)可以包含N個天線節點104,而每個都有Ni個天線元件106。天線節點Ai可能被放置在該增強型分散式天線系統基地台102
距離為di的位置,及與天線節點Aj距離為dij的位置。該增強型分散式天線系統基地台102可能有與NxNi等量的天線元件,其中每個天線元件Ni的群組實體上被分開一段距離,而可以在幾何上根據di和djj來計算。
在這些實施例中,多串流的開迴路式與閉迴路式SU-MIMO/MU-MIMO方案,可能透過使用與NxNi邏輯天線埠相關(例如,每個天線元件106使用一個)之該等NxNi共同參考信號在每個天線節點104被啟用。在這些實施例中,每個天線節點104可能透過實體層辨識碼被獨特地辨別,其會在下面詳細描述。
圖3A圖示根據某些實施例的劃分同步代碼。根據某些實施例,被該等天線節點104(如圖1)所傳送的同步代碼,可能允許使用者設備112(如圖1)來與屬於一個或更多個該等天線節點104的該等天線元件106同步。該等同步代碼可能被劃分來包含資訊欄位300,來獨特地辨別傳呼群組、該增強型分散式天線系統基地台102、和該等天線節點104中的一個。在某些實施例中,該同步代碼的該等資訊欄位300可能包含傳呼群組識別(ID)欄位301,其用來辨別兩個或更多增強型分散式天線系統基地台102中的該傳呼群組。該資訊欄位300也可能包含胞元識別(ID)欄位302,其用來辨別該增強型分散式天線系統基地台102。該資訊欄位300也可能包含天線節點識別(ID)欄位304,其用來辨別與該增強型分散式天線系統基地台102相關的該等天線節點104的其中一個。在某些3GPP LTE
實施例中,該傳呼群組識別欄位301可能是增強型節點B的群組識別欄位,該胞元識別欄位302可能是增強型節點B的識別欄位,而該天線節點識別欄位304可能是增強型節點B的天線節點識別欄位。
在圖3A所圖示的範例中,該傳呼群組識別欄位301可能包含N3位元,該胞元識別欄位302可以包含N2位元,而該天線節點識別欄位304可能包含N1位元,其中N1+N2+N3=N,而其中N可能是天線節點104的數量。
圖3B圖示根據某些實施例的代碼結構。由該天線節點104(如圖1)所傳送的該同步代碼可能包含獨特的代碼結構310,其有被分為複數個子空間315的代碼空間。該子空間315可允許該使用者設備112(如圖1)來獨特地辨別傳呼群組、該增強型分散式天線系統基地台102(如圖1)和該特定的天線節點104(圖1)。在某些實施例中,該代碼結構可能包含有2N個不同的同步代碼的代碼序列。
該複數個子空間315可能包含複數個傳呼群組子空間311,其用來辨別該增強型無線接取網路100(如圖1)的每個傳呼群組。每個傳呼群組子空間311可能與一個傳呼群組關聯,且包含複數個增強型節點B子空間312。每個增強型節點B子空間312可能與該傳呼群組的其中一個增強型分散式天線系統基地台102關聯,而且每個增強行節點B的子空間312,可能有複數個天線節點子空間314。每個天線節點子空間314可能與該增強型分散式天線系統基地台102的其中一個天線節點104關聯。
在某些實施例中,不同的同步代碼310的集合可以包含2N個不同的同步代碼中的一組或一群,其中N可以是該同步代碼序列的大小。在圖3B所圖示的範例中,2N個代碼中的代碼空間可能被劃分成2N/2N3個子空間311,而且每個該等子空間311可能被進一步劃分成2N3/2N2個子空間312。每個子空間312可以進一步被劃分成2N2/2N1個子空間314。這個序列劃分可以幫助對該使用者設備112的該資訊欄位300做偵測和解碼。
在圖3A和圖3B所圖示的該範例劃分和代碼結構,允許增強型分散式天線系統基地台102在胞元108中,透過從1個天線節點104或天線節點104的群組到其他群組交遞該使用者設備112,來提供流動性管理。該使用者設備112可以根據該參考信號601,測量和匯報從每個天線節點所接收到的信號強度。於是該增強型分散式天線系統基地台102可能將信號從另外一個天線節點104或地理上更接近該使用者設備112的天線節點104群組重新導向。和傳統的蜂巢系統不同,在天線節點104之間的該胞元內交遞和流動性管理,可能從起始天線節點104到目標天線節點104,透過利用該X3介面103重新導向傳輸來執行,因為該基頻處理都在該增強型分散式天線系統基地台102內被執行。因此在增強型分散式天線系統胞元108中的流動性管理可能根據該使用者設備112的信號品質測量報告,減少為對該使用者設備112「資料和控制路徑」的選擇。
圖4根據某些實施例圖示圖1中增強型無線接取網路之各種功能性元件。該接取閘道110可能包含流動性管理實體(MME)402、封包資料網路閘道(P-GW)404、和服務閘道(S-GW)406,來執行傳統閘道功能,其包括了提供IP網路的接取。在某些實施例中,可能根據LTE演進封包核心(EPC)的規格組態接取閘道110,以提供多百萬位元頻寬容量延遲減少和提升流動性。該增強型分散式天線系統基地台102可能透過核心網路介面(例如S1介面101)和該接取閘道110通信。
在某些實施例中,該增強型分散式天線系統基地台102可利用軟體定義無線電(SDR)的基頻處理池,其包含被組態來執行此文中所描述之各式功能的複數個處理器。每個增強型分散式天線系統基地台102可能運轉來當作關聯胞元108的處理中心,也可能組態來透過該實體層X3介面103來與該等天線節點104通信。
該X3介面103可能包含至少一個光纖連結和同軸電纜連結,其將每個天線節點104耦合至基頻處理池。在某些實施例中,該X3介面103可能耦合每個天線節點104的射頻前端至該增強型分散式天線系統基地台102的射頻前端。在這些實施例中,該X3介面可能被組態來在每個天線節點104的該等天線元件106,與該增強型分散式天線系統基地台102間做射頻信號通信。在某些替代實施例中,該X3介面被組態來在每個天線104的該等天線元件106與該eDAS基地台102之間做射頻信號通信。然而,
基頻處理可能在該增強型分散式天線系統基地台102的中央處理地點被執行。該X3介面可能包含任一運作在射頻或者基頻層次的寬頻連結。
在某些實施例中,該增強型分散式天線系統基地台102可能被組態以在該使用者設備112的天線節點104間執行流動性管理,以及在該使用者設備112所屬相同胞元108的天線節點104間,透過該X3介面使用合作性通信執行軟性和硬***遞。在協調式多點(CoMP)實施例中,該增強型分散式天線系統基地台102可能被進一步組態來在不同胞元的天線節點104之間執行交遞。
雖然該增強型分散式天線系統基地台102、該接取閘道110、和該天線節點104被圖示成有數個分開的功能元件,但一個或更多個功能性元件可能會被結合,而且可能會由軟體組態的元件組合所實作而成,例如處理元件包括數位信號處理器(DSP),以及/或其他硬體元件。舉例來說,有些元件可能會包含一個或更多微處理器、數位信號處理器、特定應用積體電路(ASIC)、射頻積體電路(RFIC)、和各式硬體與邏輯電路的組合,用來執行至少此文中所描述的功能。在某些實施例中,該增強型分散式天線系統基地台102的功能元件、該接取閘道110、和該天線節點104可能指運作於一個或更多處理元件的一個或更多個處理緒。
實施例可能被實作在一個或硬體、韌體、和軟體的組合中。實施例也可能被實作在儲存在電腦可讀之儲存裝置
的指令中,其可能被由至少一個處理器讀取和執行,來執行本文中所描述的操作。電腦可讀之儲存裝置可能包含任一非短暫機制,用以儲存機器(例如電腦)可讀形式的資料。例如,電腦可讀之儲存裝置可能包含唯讀記憶體(ROM)、隨機存取記憶體(RAM)、磁碟儲存媒體、光學儲存媒體、快閃記憶體裝置、和其他儲存裝置及媒體。在某些實施例中,增強型分散式天線系統基地台102可能包含一個或更多處理器,而且可能被使用儲存在電腦可讀之儲存裝置組態的指令來組態。
圖5根據某些實施例圖示在增強型分散式天線系統基地台中下行鏈路實體層(PHY層)處理。如上述討論,增強型分散式天線系統基地台102(如圖1)可運作為它關聯的胞元108(如圖1)的處理中心,而且可被組態來透過該X3介面103(如圖1)與該天線節點104(如圖1)通信。
根據實施例中,每個增強型分散式天線系統基地台102可能為每個天線節點104執行分開的實體層處理,而且透過該X3介面103傳輸實體層信號到該等天線節點104。在圖5所示的範例中,每個增強型分散式天線系統基地台102可能執行每個天線節點的調變和編碼調適線502。每個eDAS基地台102也可能執行個天線節點的MIMO處理504、和每個天線節點的資源對應506。這些實體層處理動作可能產生實體層信號508,給透過該X3介面103到該天線節點104的傳輸使用。在所示的範例中,實體層信號508A可能透過該X3介面103被傳送給
第一個天線節點104,而實體層信號508B可能透過該X3介面103被傳送給第二個天線節點104。雖然圖5圖示該實體層信號508是正交分頻多工(OFDM)信號,但這並不是一個必要條件。
根據這些實施例,該基頻處理在該增強型分散式天線系統基地台102被執行(而不是在該等天線節點104被執行)。這也可能允許在由該同一增強型分散式天線系統基地台102所服務的該等天線節點104之各處理區塊間做硬體分享。雖然圖5可能意味著,實體層處理要加乘由該增強型分散式天線系統基地台102所服務的天線節點104數目,但相同傳輸鏈路實際上可能被分享,或者透過重新組態該功能區塊的參數來重複使用。在圖5所示的範例中,傳輸格式和調變及編碼方案可能根據天線節點調適,根據該使用者設備112和每個天線節點104之間的頻道狀況,允許傳輸參數的鏈結層調適。此外,該多重輸入多重輸出模式和編碼方案與分層對應和資源對應可能被根據天線節點104做個別調適。
在該增強型分散式天線系統基地台102之該等天線節點104的基頻處理效能,允許該增強型分散式天線系統基地台102執行增強型分散式天線系統基地台102之內,自多個與同增強型分散式天線系統基地台102相關的該等天線節點104之協調傳輸,透過參與協調傳輸的該天線節點104聯合調整該多重輸入多重輸出的編碼參數。
在某些實施例中,該增強型分散式天線系統基地台
102被組態來根據SU-MIMO和MU-MIMO通信方案執行多串流傳輸通信。在這些實施例中,多串流處理和SU-MIMO與MU-MIMO處理可能被執行在該增強型分散式天線系統基地台102,且該信號可能被透過該X3介面103傳輸到選定的該天線節點104。在某些實施例中,兩個或更多個天線節點104可能被用來給SU-MIMO和MU-MIMO傳輸使用。在某些實施例中,從該使用者設備112所接收到的信號品質報告,頻道狀態資訊(CSI)或預編矩陣索引(PMI),可能被該增強型分散式天線系統基地台102所使用,當作閉迴路式多重輸入多重輸出通信方案的一部分。在某些實施例中,也可能使用開迴路式MIMO通信方案。
雖然圖5圖示了傳輸端的實體層處理之執行,但該增強型分散式天線系統基地台102可能也被組態來執行相似的接收端每個天線節點之實體層處理。據此,胞元108的該等天線節點104關聯的功能性的接收端組件也可能相似地被共享。
圖6圖示根據某些實施例的參考信號多工方案600。根據實施例,該增強型分散式天線系統基地台102(如圖1)可能被組態來使該等天線節點104(如圖1)根據多工方案600傳輸參考信號601,來允許使用者設備112(如圖1)對於任一或更多個天線節點104的天線元件106(如圖1)執行頻道估計。
用於傳輸參考信號601之多工方案600可包含分碼多
工(CDM)、分時多工(TDM)和分頻多工(FDM)的組合(例如分碼多工/分時多工/分頻多工方案),來允許該使用者設備112獨特地辨別參考信號,其與使用在頻道估計的任一或更多個該等天線節點104的單一天線元件106相關。
在某些實施例中,每個與該增強型分散式天線系統基地台102關聯的該等天線節點104,可能組態來用不同的分碼多工代碼602傳輸。該相同天線節點104的該等天線元件106,會被組態來利用共同分碼多工代碼602,來傳輸它們的參考信號。該相同天線節點104的該等天線元件106,可能被進一步組態,來在正交頻分多工(OFDM)符號內的不同時段604,在OFDM資源區塊606中的不同子載體頻率606中傳輸參考信號601,在如圖6所示。
更進一步如圖6中所示,由於由每個天線節點104所傳輸的參考信號601,可能會被用不同的分碼多工代碼傳輸,每個該等天線節點104可能會在該相同時間604和在該等相同子載體頻率606傳輸該參考信號601。在這些實施例中,使用分碼、分時、分頻多工的該等參考信號601,提供對每個與任何特定天線節點104所關聯的該等天線元件106之獨特地辨別。
此外,為了偵測和解調目的所執行的頻道估計,頻道狀態資訊和MIMO模式選擇及秩調適之頻道品質測量,該使用者設備112可能可以利用這些參考信號601來估計與每個天線元件106去與回之間的頻道。該等參考信號601可能是一般的參考信號或者使用者設備特定的信號。
在某些實施例中,由於每個天線節點104的天線元件106的該數量,以及該增強型分散式天線系統基地台102的天線節點104的該數量可能非常大(例如大於一千),因此該代碼組合、分時和分頻多工可能可以幫助預防過度的第一層使用,以及也可能幫助預防在高度流動性狀況或由於頻道頻率選擇時潛在的代碼正交損失。該分頻多工/分時多工而非分碼多工所使用的參考信號可能導致過度的第一層使用,和造成該系統的整體效能退化。使用分碼多工參考信號而非分頻或分時多工,可能導致在高度流動性狀況或頻道頻率選擇時潛在的代碼正交損失。
如圖6所示,透過分派每個分碼/分頻/分時多工代碼給一個天線元件,天線節點104的天線元件106,可能由傳輸自該天線元件的獨特參考信號601被辨別。該等參考信號601可能是分時和/或分頻多工,其中資料子載體是在該資源區塊606之中。在某些實施例中,該等參考信號601可能是分時和/或分頻多工,其中資料子載體是在該資源區塊606之中,其根據該參考信號是否為使用者設備特有或者為一般參考信號(例如一般窄頻參考信號或一般寬頻參考信號),來透過子頻帶或者全部頻帶傳送。
據此,由於該使用者設備112可以辨別自每個天線元件106間傳送的該等參考信號,同時也可辨別自每個天線節點104的參考信號,因此該使用者設備112除其他事項外,可能可以為改善的SU-MIMO或MU-MIMO通信執行多重輸入多重輸出的頻道估計。
根據某些實施例,該增強型分散式天線系統基地台102可自該使用者設備112接收信號品質報告,其可獨特地辨別該等天線節點104中的一個,以及包含該使用者設備112自該等天線節點104所接收的信號之信號品質資訊。該使用者設備112可能傳送信號品質報告到每個天線節點104,其接收來自該增強型分散式天線系統基地台102的信號,來給該增強型分散式天線系統基地台102使用。該增強型分散式天線系統基地台102可能據此透過該X3介面103導向信號到該適當的天線節點104。在這些實施例中,該使用者設備112根據依照該多工方案600所傳送的該等參考信號601可能可以為天線節點104的一個或更多該等天線元件106執行頻道估計。
該信號品質報告可能根據該頻道估計。在某些實施例中,該信號品質報告可能包含3GPP LTE實施例中之信號接收強度(RSSI)、參考信號接收能量(RSRP)中的至少一項、信號加干擾雜訊比(CINR)載體、或其他信號品質參數,或與自所示天線節點104所接收之參考信號關聯的路徑損耗測量。在某些實施例中,該使用者設備112可能被組態來在兩個或更多個該等天線節點104中選擇一個天線節點104,其根據該天線節點104傳送之參考信號的信號品質資訊而定。
據此,由於該使用者設備112被組態來獨特地辨別天線節點104,因此該增強型分散式天線系統基地台102可能使用一個或更多天線節點104來與該使用者設備112通
信,其可能與該使用者設備112最接近(例如有最佳的信號特性),允許該使用者設備112使用減少的傳輸功率水平來通信,這樣會降低該使用者設備112的電力損耗。此外,信號品質和流通量也可能被改善。
在某些實施例中,由該使用者設備112所傳送的信號品質報告可能辨別該傳呼群組識別、該胞元識別、以及辨別接收參考信號的特定天線節點104之該天線節點識別。在這些實施例中,該信號品質報告可能提供由使用者設備112自特定天線節點104所接收之信號關聯的信號品質資訊。據此,每個信號品質報告可能與特定天線節點104關聯。
圖7為根據某些實施例的增強型分散式天線系統基地台被組態來沿火車軌道運作範例。該增強型分散式天線系統基地台702可能透過X3介面與天線節點704通信,來提供該胞元內的通信服務。天線節點704可能被沿著火車軌道708放置。根據實施例,該等天線節點704可能在空間上被分離,並且在該胞元內在不同的地理位置被提供(例如沿著該等火車軌道708)。該增強型分散式天線系統基地台702可能被組態來在中央處理地點為每個天線節點704執行實體層基頻處理。該增強型分散式天線系統基地台702可能也被組態,透過在該X3介面上,自一天線節點104到下一個天線節點104重新導向實體層信號,在該等天線節點704間執行胞元內交遞,例如,當火車沿著該等軌道708移動時。該增強型分散式天線系統基地台702
可能被組態成和增強型分散式天線系統基地台102(如圖1)相似。
圖8A、8B及8C根據某些實施例圖示各式天線節點流動性的狀況。在圖8A中,圖示了單一天線節點增強型節點B內流動性。在圖8B中,圖示多天線節點的增強型節點B內流動性。如圖所示,地理上分離的天線節點804提供於不同的地理位置,由該增強型分散式天線系統增強型節點B 802所服務。在這些實施例中,其中該增強型分散式天線系統增強型節點B 802被組態來在中央處理地點,為每個天線節點804執行實體層基頻處理,而且透過利用該X3介面從起始天線節點804到目標天線節點804間重新導向實體層信號,來執行該等天線節點804之間的胞元內交遞。
在圖8C中,圖示了多天線節點的增強型節點B間流動性。在這些實施例中,該增強型節點B間交遞在一無線接取網路中的兩個增強型分散式天線系統增強型節點B 802間被執行。在這些實施例中,該交遞可能透過該X2+介面在兩個該等增強型分散式天線系統增強型節點B 802之間被直接協調,例如該X2+介面109(如圖4)。
Claims (28)
- 一種使用者設備(UE)之裝置,包含收發器電路及處理電路,被組態以:從服務胞元之增強型節點B(eNB)接收第一參考信號,該eNB為第一傳輸點;從第二傳輸點接收第二參考信號,該第二傳輸點位置與該eNB分開;依據該第一參考信號之接收,將第一頻道估計資訊報告給該服務胞元之該eNB;依據該第二參考信號之接收,將第二頻道估計資訊報告給該服務胞元之該eNB;至少部分依據該報告的第一及第二頻道估計資訊,解碼來自該第一及第二傳輸點的協調式多點(CoMP)傳輸;及解碼第一同步信號用於與該第一傳輸點同步,以及解碼第二同步信號用於與該第二傳輸點同步,該第一或第二同步信號之其中至少一者包含資訊欄位,其獨特地辨別傳呼群組、該eNB和該個別的第一或第二傳輸點。
- 如申請專利範圍第1項之裝置,其中該第一及第二頻道估計資訊包含通道品質指示(CQI),且其中該裝置更被組態以報告預編碼矩陣指示(PMI)。
- 如申請專利範圍第1項之裝置,其中該處理電路更被組態以處理從該eNB接收到的UE特定參考信號(UE-RS)。
- 如申請專利範圍第3項之裝置,其中該些UE特定參考信號係依據多工技術而被傳輸,該多工技術被組態來獨特地辨別該第一及第二參考信號,以將該第一及第二參考信號與該第一及第二傳輸點相關聯。
- 如申請專利範圍第1項之裝置,其中該第一傳輸點與該UE之服務胞元相關聯,且該第二傳輸點與該UE之非服務胞元相關聯。
- 如申請專利範圍第5項之裝置,其中該非服務胞元在該服務胞元的地理區域之內。
- 如申請專利範圍第1項之裝置,其中該第一傳輸點與一或多個第一天線節點相關聯,且其中該第二傳輸點與一或多個第二天線節點相關聯。
- 如申請專利範圍第7項之裝置,其中該第一及第二天線節點為分散式天線系統的一部分。
- 如申請專利範圍第3項之裝置,其中每個多工技術包含分碼多工(CDM)、分時多工(TDM)和分頻多工(FDM)的獨特組合。
- 一種非暫態電腦可讀儲存媒體,其儲存由使用者設備(UE)之一或多個處理器執行的指令,用以:解碼第一參考信號,該第一參考信號接收自與服務胞元之增強型節點B(eNB)相關聯的第一傳輸點;解碼第二參考信號,該第二參考信號接收自第二傳輸點,該第二傳輸點位置與該eNB分開;依據該第一參考信號之接收,將第一頻道估計資訊報 告給該服務胞元之該eNB;依據該第二參考信號之接收,將第二頻道估計資訊報告給該服務胞元之該eNB;至少部分依據該報告的第一及第二頻道估計資訊,解碼來自該第一及第二傳輸點的協調式多點(CoMP)傳輸;及解碼第一同步信號用於與該第一傳輸點同步,以及解碼第二同步信號用於與該第二傳輸點同步,該第一或第二同步信號之其中至少一者包含資訊欄位,其獨特地辨別傳呼群組、該eNB和該個別的第一或第二傳輸點。
- 如申請專利範圍第10項之電腦可讀儲存媒體,其中該第一及第二頻道估計資訊包含通道品質指示(CQI),且其中該UE更被組態以報告預編碼矩陣指示(PMI)。
- 如申請專利範圍第10項之電腦可讀儲存媒體,其中該一或多個處理器更被組態以處理從該eNB接收到的UE特定參考信號(UE-RS)。
- 如申請專利範圍第12項之電腦可讀儲存媒體,其中該等參考信號係依據多工技術而被傳輸,該多工技術被組態來獨特地辨別該第一及第二參考信號,以將該第一及第二參考信號與該第一及第二傳輸點相關聯。
- 如申請專利範圍第10項之電腦可讀儲存媒體,其中該第一傳輸點與該UE之服務胞元相關聯,且該第二傳輸點與該UE之非服務胞元相關聯。
- 如申請專利範圍第14項之電腦可讀儲存媒體,其中該非服務胞元在該服務胞元的地理區域之內。
- 如申請專利範圍第10項之電腦可讀儲存媒體,其中該第一傳輸點與一或多個第一天線節點相關聯,且其中該第二傳輸點與一或多個第二天線節點相關聯。
- 如申請專利範圍第16項之電腦可讀儲存媒體,其中該第一及第二天線節點為分散式天線系統的一部分。
- 如申請專利範圍第13項之電腦可讀儲存媒體,其中每個多工技術包含分碼多工(CDM)、分時多工(TDM)和分頻多工(FDM)的獨特組合。
- 一種增強型節點B(eNB)之裝置,包含處理電路及收發器電路,被組態以:組態用於由第一傳輸點傳輸的第一參考信號,該eNB提供使用者設備(UE)之服務胞元;組態用於由第二傳輸點傳輸的第二參考信號,該第一及第二參考信號係同步的且依據多工方案被組態;依據該第一參考信號之接收,自該UE接收第一頻道估計資訊的報告;依據該第二參考信號之接收,自該UE接收第二頻道估計資訊的報告;至少部分依據該報告的第一及第二頻道估計資訊,組態該第一及第二傳輸點用於協調式多點(CoMP)傳輸至該UE;及傳輸第一同步信號用於與該第一傳輸點同步,其中由 該第二傳輸點傳輸的第二同步信號係用於與該第二傳輸點同步,該第一或第二同步信號之其中至少一者包含資訊欄位,其獨特地辨別傳呼群組、該eNB和該個別的第一或第二傳輸點。
- 如申請專利範圍第19項之裝置,其中該第一及第二傳輸點並非共置的。
- 如申請專利範圍第19項之裝置,其中該CoMP傳輸包含自該第一及第二傳輸點的同步的聯合傳輸(joint-transmission)。
- 如申請專利範圍第19項之裝置,其中該第一及第二頻道估計資訊包含通道品質指示(CQI),且其中該裝置更被組態以自該UE接收用於各報告的預編碼矩陣指示(PMI)。
- 如申請專利範圍第19項之裝置,其中該第一傳輸點與該UE之服務胞元相關聯,且該第二傳輸點與該UE之非服務胞元相關聯。
- 如申請專利範圍第23項之裝置,其中該非服務胞元在該服務胞元的地理區域之內。
- 如申請專利範圍第19項之裝置,其中該第一傳輸點與一或多個第一天線節點相關聯,且其中該第二傳輸點與一或多個第二天線節點相關聯。
- 如申請專利範圍第25項之裝置,其中該第一及第二天線節點為分散式天線系統的一部分。
- 如申請專利範圍第19項之裝置,其中該等參考信 號係依據多工技術而被傳輸,該多工技術被組態來獨特地辨別該第一及第二參考信號,以將該第一及第二參考信號與該第一及第二傳輸點相關聯。
- 如申請專利範圍第27項之裝置,其中每個多工技術包含分碼多工(CDM)、分時多工(TDM)和分頻多工(FDM)的獨特組合。
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2011
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