TWI420854B - 用於端節點輔助鄰近者發現之方法及裝置 - Google Patents
用於端節點輔助鄰近者發現之方法及裝置 Download PDFInfo
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Description
本發明係關於通信系統,且更特定言之係關於用於在無線(例如蜂巢式)通信網路中依據實體層資訊來發送訊息之方法及裝置。
開放系統互連(OSI)參考模型在說明各種通信與發送操作中較有用。該OSI參考模型包括7個層,其中應用層係最頂層而實體層係最低層。該實體層係在系統中處理實際實體連接與該等實體連接之屬性的層。在該實體層上面係一資料鏈路層,有時稱為鏈路層。有時將該鏈路層(在OSI模型中係層2)說明為一特定技術傳輸層。在該鏈路層上面係網路層(OSI層3),其支援網路發送與中繼。該網路層有時稱為封包層。於該網路層,在(例如)一或多個路徑上實行經由該網路的訊息/封包之發送。可以使用不同定址來指引處於不同層級之訊息與信號。例如,可以使用一諸如一IP位址之類的網路位址來發送處於該網路層層級之訊息/封包。可以使用MAC位址來控制處於該資料鏈路層層級的訊息之發送。於該OSI模型之最低層級(該實體層級),一或多個實體識別號與一來源或目的地器件之一實際實體屬性或特徵相關。瞭解該等不同通信層與用於該等層之各層的不同定址技術將有助於瞭解本發明。
通信系統常包括一複數個耦合至接取節點之網路節點,端節點(例如行動器件)經由該等接取節點耦合至該網路。可以一階層方式配置網路節點。端節點一般直接經由已使用該等接取節點建立之連接來與接取節點通信。此類系統通常依賴於在一接取節點與端節點之間存在一雙向通信鏈路來支援一端節點與一接取節點之間的雙向通信。應注意,在此類系統中,該端節點通常不知道一目標目的地接取節點之網路層位址,但可認知其可透過廣播通道接收的一般可包括實體層識別號之資訊,在此類系統中通常不將該等資訊用於訊息發送。此方法在該端節點當時僅能夠維持一單一雙向通信鏈路時導致交遞延遲與封包遺失。
因此,應瞭解需要即使在一端節點不知道一目標接取節點之網路位址時仍允許不具有至該目標接取節點之當前上行鏈路通信鏈路之該端節點經由另一接取節點(該端節點與其具有一當前上行鏈路通信鏈路)來與該目標接取節點通信之方法及裝置。
在某些系統中,端節點能夠同時維持多個與不同接取節點之雙向通信鏈路。然而,此類系統一般要求該等端節點透過直接連接至一特定接取節點之鏈路來傳送針對該特定接取節點的訊息,該特定接取節點與一端節點具有一連接。在某些情況下,此方法效率甚低,因為鏈路(尤其在其係無線鏈路時)傾向於在品質方面波動(例如延遲與遺失特徵)。因此,當需要將一訊息傳送至該目標目的地接取節點時,至該目標目的地接取節點之鏈路可能並非該端節點可獲得之最佳鏈路。一般而言,求助於網路層通信來克服此限制,由於使用網路層位址(例如IP位址),因而可以經由多個跳躍來發送該網路層通信。此使用網路層位址之方法係亦低效率甚,尤其在傳訊必定牽涉到鏈路層特定功能時,因為在某些系統中網路層訊息傾向於比鏈路層訊息大許多。此類低效率發信並不很適合於透過資源受限制的空中鏈路進行通信。
服務於鄰近的地理小區之接取節點一般經由手動組態而相互熟知。在此類組態期間,在一接取節點中對應若干其鄰近者來配置各種參數。此類組態一般耗費人力且有錯誤傾向,不僅由於可能的人為錯誤還由於一無線網路之網路佈局常常藉由網路擴充而變化之事實或甚至由於環境狀況。此尤其與一無線通信系統之一逐漸相位配置有關。因此,應瞭解,在該等端節點遍及該系統移動並遇到新配置之節點時,需要端節點輔助鄰近者發現程序以使得接取節點可以回應端節點發信來交換鄰近者資訊,而非藉由手動組態技術。
除其他方面外,本發明係關於使用端節點(例如無線終端)來發現基地台並將有關所發現接取節點(例如基地台)之資訊傳送至一系統中的其他接取節點。因而,本發明之各種具體實施例係關於在包括一複數個接取節點之一通信系統中支援鄰近者發現之無線終端為主的方法。當該無線終端在該系統中漫遊並遇到新的接取節點時,一或多個實體相鄰接取節點會因與該無線終端通信而得知該新的接取節點之存在。
在某些但不必係所有實施方案中,使用一接取節點將一訊息從一端節點發送至另一接取節點之一失敗來觸發用於將所更新發送資訊提供給未能完成該發送操作之接取節點之各種信號。依此方式,一接取節點可以更新其發送資訊以使其包括對應一端節點所遇到的但該接取節點先前不清楚或缺少足夠發送資訊的接取節點之發送資訊。
藉由自動化該接取節點發現程序之所有或一部分,本發明之方法及裝置使接取節點之相位配置比在作為配置一新的基地台的程序之部分必須手動程式化接取節點及/或向其供應有關其鄰近者之資訊的系統中更容易。此外,由於該鄰近者發現與更新程序之發生需要極少或不需要直接管理員參與,故本發明之方法及裝置尤其適合於該整個網路可以不在一單一管理員控制之下且個體可以任意自由添加接取節點(例如基地台)而不必首先通知其他基地台管理員在該系統中引入一新的基地台之系統。
因而本發明之各種特徵係關於從接取節點接收指示一識別號至接取節點位址解析失敗之信號並促使該端節點傳送鄰近者通知訊息以建立新的接取節點鄰近者之端節點方法。
儘管某些特徵係關於無線終端方法及裝置以及儲存於一無線終端中的本發明之新穎訊息,但其他特徵係關於新穎接取節點方法及裝置。本發明還係關於儲存一或多個本發明之新穎訊息的資料儲存器件(例如記憶體器件)。
雖然上面已概略地說明各種具體實施例,但應瞭解不必所有具體實施例皆包含相同特徵且上述某些特徵並非必需但在某些具體實施例中可能需要。在以下詳細說明中,說明本發明之許多額外特徵、具體實施例及利益。
可以將本發明之用於依據實體層資訊(例如實體層識別號)來發送訊息的方法及裝置用於支援與一或多個端節點(例如行動器件)之通信會話。可以將本發明之方法及裝置用於範圍廣泛的通信系統。例如,可以將本發明用於支援行動通信器件(例如配備數據機之筆記型電腦、PDA及各種其他支援無線介面以利於器件行動性的器件)之系統。
圖1解說依據本發明實施之一範例性通信系統100(例如一蜂巢式通信網路),其包含複數個藉由通信鏈路互連之節點。範例性通信系統100係(例如)一多向近接展頻正交分頻多工(OFDM)無線通信系統。該範例性通信系統100中的節點依據通信協定(例如網際網路協定(IP))使用信號(例如訊息)交換資訊。例如,可以使用電線、光纖電纜及/或無線通信技術來實施該系統100之通信鏈路。該範例性通信系統100包括複數個端節點144、146、144'、146'、144"、146",該等端節點經由複數個接取節點140、140'、140"來接取該通信系統。該等端節點144、146、144'、146'、144"、146"可以係(例如)無線通信器件或終端機,而該等接取節點140、140'、140"可以係(例如)基地台。可以將該等基地台實施為無線接取路由器。該範例性通信系統100還包括若干其他節點104、106、110及112,該等節點係用於提供互連性或提供特定服務或功能。明確地說,該範例性通信系統100包括一伺服器104、其係用於支援關於端節點的狀態之傳輸與儲存。例如,該伺服器節點104可以係一AAA伺服器,或者其可以係一上下文傳輸伺服器,或者其可以係一包括AAA伺服器功能性與上下文傳輸伺服器功能性兩者的伺服器。
該圖1之範例性系統100描述一包括伺服器104與節點106的網路102,該等伺服器104與節點106係分別藉由一對應網路鏈路105與107連接至一中間網路節點110。該網路102中的中間網路節點110還經由網路鏈路111將互連性提供至從該網路102的角度來看處於外部之網路節點。將網路鏈路111連接至另一中間網路節點112,其分別經由網路鏈路141、141'、141"將連接性進一步提供給複數個接取節點140、140'、140"。
將每一接取節點140、140'、140"描述為分別經由對應的接取鏈路(145、147)、(145'、147')、(145""、147")分別將連接性提供至複數個N個端節點(144、146)、(144'、146')、(144"、146")。在該範例性通信系統100中,將每一接取節點140、140'、140"描述為使用無線技術(例如無線接取鏈路)來提供接取。將每一接取節點140、140'、140"之一無線電覆蓋區域(例如通信小區)148、148'、148"分別解說為一環繞對應接取節點之圓形區域。
隨後將該範例性通信系統100用作本發明之各種具體實施例的說明內容之一依據。本發明之替代性具體實施例包括各種網路佈局,其中網路節點之數目與類型、接取節點之數目與類型、端節點之數目與類型、伺服器及其他代理之數目與類型、鏈路之數目與類型及節點之間的互連性可以不同於圖1所描述的範例性通信系統100之該等方面。
在本發明之各種具體實施例中,可以省略或組合圖1所描述的某些功能實體。還可以改變此等功能實體在該網路中的位置或放置。
圖2提供依據本發明實施的一範例性端節點200(例如諸如一行動節點之類的無線終端)之一詳細解說。圖2所描述之範例性端節點200係一裝置之一詳細表示,可以將該裝置用作圖1所描述之端節點144、146、144'、146'、144"、146"之任一個。在圖2之具體實施例中,該端節點200包括藉由匯流排206耦合在一起的一處理器204、一無線通信介面230、一使用者輸入/輸出介面240及記憶體210。因此,該端節點200之各種組件可以經由匯流排206交換資訊、信號及資料。該端節點200之組件204、206、210、230、240位於一外罩202內。
該無線通信介面230提供一機構,該端節點200之內部組件可以藉由該機構將信號傳送至外部器件與網路節點(例如接取節點)並從外部器件與網路節點(例如接取節點)接收信號。該無線通信介面230包括(例如)一具有一對應接收天線236之接收器模組232與一具有一對應發送天線238之發射器模組234,其係用於(例如經由無線通信通道)將該端節點200耦合至其他網路節點。在某些具體實施例中,該發射器模組234包括一正交分頻多工(OFDM)發射器。
該範例性端節點200還包括一使用者輸入器件242(例如小鍵盤)與一使用者輸出器件244(例如顯示器),其係經由該使用者輸入/輸出介面240耦合至匯流排206。因而,使用者輸入/輸出器件242、244可以經由使用者輸入/輸出介面240及匯流排206與該端節點200之其他組件交換資訊、信號及資料。該使用者輸入/輸出介面240與相關器件242、244提供一機構,一使用者可藉由該機構操作該端節點200以完成各種任務。特定言之,該使用者輸入器件242與使用者輸出器件244提供允許一使用者控制該端節點200與在該端節點200之記憶體210中執行之應用程式(例如模組、程式、常式及/或功能)之功能性。
該處理器204在各種包括於記憶體210中之模組(例如常式)的控制之下控制該端節點200之操作以實行下面說明的各種發信與處理。在啟動時或在其他模組呼叫時執行該等包括於記憶體210中之模組。在執行時,模組可以交換資料、資訊及信號。在執行時,模組還可以共用資料與資訊。在圖2之具體實施例中,本發明之端節點200的記憶體210包括一發信/控制模組212與發信/控制資料214。
該發信/控制模組212控制與接收與傳送用於管理狀態資訊儲存、擷取及處理的信號(例如訊息)相關之處理。發信/控制資料214包括狀態資訊,例如參數、狀態及/或其他與該端節點之操作相關的資訊。特定言之,該發信/控制資料214包括組態資訊216(例如端節點識別資訊)與操作資訊218(例如關於當前處理狀態、擱置回應狀態等之資訊)。該模組212接取及/或修改資料214,例如更新該組態資訊216及/或該操作資訊218。
訊息產生模組251負責產生用於該端節點200之各種操作的訊息。鄰近者通知訊息280與發信訊息281係依據本發明而產生之範例性訊息。
鏈路選擇模組213負責從端節點200可獲得之複數個鏈路選擇一鏈路(例如最佳鏈路)用以發送下一準備由端節點200發送之訊息。該鏈路選擇演算法係依據各種鏈路品質參數,包括但不限於鏈路潛時、鏈路通道狀況、鏈路錯誤率及鏈路發送功率要求之至少某些參數。
實體層附著點識別號(PID)決定模組270負責決定對應於從一接取節點接收之廣播信號的PID。該PID決定模組270包括一小區識別模組271、一載波識別模組272及一扇區識別模組273。在某些但並非所有具體實施例中,將一小區識別號、載波識別號及扇區識別號之一組合用作實體附著點識別號。此等識別號元件之各元件皆對應於實體層識別資訊。例如,該小區識別號識別一實體小區或小區類型。該載波識別號識別該實體載波(例如該載波頻率或音調區塊),而該扇區識別號識別一對應小區中之一扇區。不需要使用所有此資訊來實施一PID且一PID之特定元件可以依據該系統實施方案而改變。例如,在一不使用扇區化小區之系統中,將不需要一扇區ID。同樣,在一單一載波系統中,可能不需要一載波ID。在一範例性系統中,進行一PID決定包括以下步驟:操作該小區識別模組271用以決定一小區識別號;操作該載波識別模組272用以決定一載波識別號;以及操作該扇區識別模組273用以決定一扇區識別號。因而,應瞭解穿過一單一實體發射器元件(例如天線)的不同信號可以對應不同實體層附著點,例如可以至少在一本地區域內藉由實體識別號之一組合來唯一地識別該等不同實體層附著點之各附著點。例如,應瞭解可以使用一天線或扇區識別號與一第一載波識別號之一組合來識別一第一實體層附著點,而可以使用一第二載波識別號與該相同天線或扇區識別號組合來識別一第二實體層附著點。
該等實體層附著點識別號(PID)資訊260係一PID列表(PID1 261、PID2 262),其係使用該PID決定模組260決定之PID。一實體層附著點識別號(PID)之一範例性實施方案可以係一連接識別號(CID),在傳送及/或接收訊息時可以將其包括於訊息。下面進一步說明特定範例性CID。
記憶體210還包括一鄰近者通知模組290、一訊息發送控制模組292及一鏈路建立模組294。該鄰近者通知模組290係用於將一鄰近者通知(例如一鄰近者通知訊息280)發送至接取節點。訊息發送控制模組292係用於控制該發射器模組234。鏈路建立模組294係用於與接取節點建立一無線通信鏈路。
圖3提供依據本發明實施之一範例性接取節點300之一詳細解說。圖3所描述之範例性接取節點300係一裝置之一詳細表示,可以將該裝置用作圖1所描述之接取節點140、140'、140"之任一個。在圖3之具體實施例中,該接取節點300包括藉由匯流排306耦合在一起之一處理器304、記憶體310、一網路/網際網路介面320及一無線通信介面330。因此,該接取節點300之各種組件可以經由匯流排306交換資訊、信號及資料。該接取節點300之組件304、306、310、320、330位於一外罩302內。
該網路/網際網路介面320提供一機構,該接取節點300之內部組件可以藉由該機構將信號傳送至外部器件與網路節點並從外部器件與網路節點接收信號。該網路/網際網路介面320包括一接收器模組322與一發射器模組324,其係用於(例如經由銅導線或光纖線)將該節點300耦合至其他網路節點。該無線通信介面330還提供一機構,該接取節點300之內部組件可以藉由該機構將信號傳送至外部器件與網路節點(例如端節點)並從外部器件與網路節點(例如端節點)接收信號。該無線通信介面330包括(例如)一具有一對應接收天線336之接收器模組332與一具有一對應發送天線338之發射器模組334。該介面330係用於(例如經由無線通信通道)將該接取節點300耦合至其他網路節點。
該處理器304在各種包括於記憶體310之模組(例如常式)的控制之下控制該接取節點300之操作以實行各種發信與處理。在啟動時或在其他可能存在於記憶體310中之模組呼叫時執行該等包括於記憶體310中之模組。在執行時,模組可以交換資料、資訊及信號。在執行時,模組還可以共用資料與資訊。
在圖3之具體實施例中,本發明之接取節點300的記憶體310包括:一信號產生模組314,其係用於產生信號;一封包發送模組350,其係負責信號與訊息之發送;一映射模組312,其係負責將PID映射至網路層位址;一位址解析表311,其包括PID至IP位址映射317。記憶體310還包括:一端節點識別模組351,其係用於識別與該接取節點300通信之端節點;上行鏈路資源配置資訊340,其係負責將上行鏈路資源配置到端節點,包括配置到一端節點X之資源341;以及下行鏈路資源配置資訊345,其係負責將下行鏈路資源配置到端節點,包括配置到一端節點X之資源346。
現簡要參見圖9,圖9解說可用作圖3所示之位址解析表311之一位址解析表311'。該位址解析表311'包括PID 902、904、906、908、910、912與分別指示該等對應IP位址903、905、907、909、911及913之資訊。每一PID在本地皆係唯一,例如直接相鄰小區之PID彼此之間係唯一。應注意,該等PID之內容可以依據該接取節點之實體特徵與該PID對應之接取節點所支援的實體層附著點之數目來改變。在圖9之範例中,PID 902、904對應於一第一接取節點(AN 1),該接取節點支援兩個使用相同載波之扇區。因此,在AN 1之情況下,PID包括一小區識別號與一扇區類型識別號便足夠唯一地識別該小區中之實體層附著點。PID 906、908、910對應於一支援多個載波與多個扇區之小區。因此,以與本文進一步說明之各種範例性具體實施例中所使用方式相同之方式來將接取節點2之PID實施為CID。PID 912對應於一第三接取節點,該接取節點包括一單一扇區並使用一單一載波。因此,對應於該第三接取節點之PID 6僅包括一小區識別號便足夠,儘管還可包括額外實體層識別(例如一扇區及/或載波識別號)。從處理之角度而言,在需要橫跨多個小區的一致PID格式之情況下,可能需要包括此類額外資訊。
現參見圖4,圖4解說依據本發明實施之一範例性連接識別號(CID)400。CID 400包括:一斜率410,其係一小區識別號;一扇區420,其係一扇區識別號;以及一載波430,其係一載波頻率識別號,還稱為音調區塊識別號。
在一使用OFDM技術之範例性通信系統中,在實體層中,將頻譜分成若干音調並重新用於鄰近地理區域內的小區與扇區中。為了改良干擾特徵,用於每一小區/扇區中之音調隨時間跳躍,而鄰近地理區域內的不同小區與扇區使用不同跳躍序列,該等跳躍序列指定該等音調應如何跳躍。使用一由兩個輸入變數(即該小區識別號(例如斜率值)與一扇區識別號)控制之預定功能來產生該等跳躍序列。可以將該扇區識別號實施為一扇區類型識別號來指示一特定扇區對應於複數個可能扇區類型之哪一扇區類型。在一具體實施例中,該斜率值係一從1至112之整數,而該扇區識別號值係一從0至5之整數。鄰近小區與扇區使用不同對斜率與扇區識別號使得所產生跳躍序列不同。在一具體實施例中,一小區中的所有扇區使用相同斜率值但使用不同扇區識別號,而鄰近(例如實體相鄰)小區使用不同斜率值。
此外,在某些具體實施例中,該範例性OFDM通信系統使用多個載波或音調區塊,使得將可獲得音調分組成多個音調區塊。在一音調區塊中的音調較佳的係連續的。在一範例性系統中,在一給定音調區塊中的音調之跳躍侷限於該音調區塊。即,該等跳躍序列使得該等音調可以在該音調區塊內跳躍但不能橫跨多個音調區塊跳躍。使用一載波識別號給音調區塊編索引。在一具體實施例中,該載波識別號係一整數0、1或2。
在一端節點設定一連接以獲得無線網路服務時,在該網路側上之實體係一接取節點(例如在一小區/扇區中的一基地台),並針對一單一音調區塊來定義該連接。因此,在上述範例性OFDM通信系統中,可以將斜率、扇區識別號及載波識別號之一組合用作識別用於該無線終端的連接之一本地唯一的識別號。因而,該組合係一基於一或多個實體層識別號之連接識別號。在一具體實施例中,多個無線終端可以在相同音調區塊上與相同基地台小區/扇區具有連接。由於如小區、扇區及音調區塊之組合所定義將該些連接連接至相同實體層附著點,故其通常會共用相同連接識別號。可以使用該連接識別號與一無線終端識別號之組合來指示與一特定無線終端之一通信連接。
一般而言,該連接識別號係區域唯一地識別一連接之一數字或一數字組合。在各種具體實施例中,該數字或該等數字係實體層特徵參數。在另一具體實施例中(例如一CDMA通信系統之一範例性具體實施例),該連接識別號可以係一偽雜訊(PN)序列偏移與另一參數(例如若使用多個載波則係一載波識別號)之組合。
圖5解說依據本發明的使用圖4之連接識別號之一範例性訊息500。範例性訊息500係一包括一CID目的地/來源位址之鏈路層訊息。依據本發明之某些具體實施例,在鏈路層訊息中,該CID目的地/來源位址係一可選欄位。鏈路層訊息500包括一鏈路層控制(LLC)類型欄位510,其識別包括於該訊息500中的訊息主體530之類型。CID 520係形式為圖4之連接ID 400之連接ID。在本發明之一具體實施例中,該CID欄位520在依據本發明從一端節點傳送至一接取節點時識別一目的地實體附著點而在依據本發明從一接取節點傳送至一端節點時識別一來源實體附著。
圖6解說依據本發明之各種範例性具體實施例實行之一範例性通信方法與對應發信。在圖6中,端節點630經由接取節點610與接取節點620通信,在端節點630與接取節點620之間並無一無線上行鏈路鏈路且該端節點不必知道該接取節點620之一IP位址。在圖1所示的範例性系統100之上下文中解說該發信。接取節點610與620類似於圖1中的系統100之接取節點140、140'及140",而且其係依據圖3之接取節點300來實施。該端節點630類似於圖1中的系統100之端節點144、146、144'、146"、144"及146",而且其係依據圖2中之端節點200來實施。
在圖6中,端節點630與接取節點610維持一雙向鏈路,其意味著其可以將訊息傳送至接取節點610並從接取節點610接收訊息。圖6中的端節點630儘管處於接取節點620之發送範圍內,但並不與接取節點620具有一上行鏈路。此意味著儘管端節點630可以接收並處理接取節點620所傳送的廣播資訊(例如廣播訊息640),但端節點630不能於空中將訊息傳送至接取節點620而接取節點620不能接收並處理端節點630於空中介面傳送的訊息。在本發明之一具體實施例中,此可由於端節點630與接取節點620不具有足夠的時序同步化。由於特定限制(例如有限的硬體能力),端節點630可能不能與接取節點620建立一上行鏈路連接而端節點630當前與接取節點610具有一雙向連接。在一具體實施例中,接取節點610與接取節點620所使用之上行鏈路處於不同載波,例如接取節點610所使用的上行鏈路之頻帶不同於接取節點620所使用的上行鏈路之頻帶。若(例如)因為出於成本考量端節點630僅具有一射頻(RF)鏈故而端節點630僅能於一給定時間在一頻帶內產生上行鏈路信號,則端節點630不能在兩個分離的頻帶內同時維持兩個上行鏈路連接。在另一具體實施例中,在接取節點610與620所使用的上行鏈路處於相同頻帶內之情況下,該等兩個上行鏈路可能在時間上不同步化,因為該等兩個接取節點在時間不同步化或因為信號從該端節點630到達接取節點610與620的傳播延遲之差異。若(例如)由於端節點630具有一每次受限於一時序方案之單一數位處理鏈而使得端節點630可每次依據一時序同步化方案產生僅一上行鏈路信號,則在連接彼此之間的時序同步化不足時端節點630不能同時維持兩個上行鏈路連接。
端節點630接收接取節點620所發射之廣播信號640。依據本發明之該具體實施例,該(等)信號640足夠決定對應發射廣播信號640的接取節點620之特定實體附著的連接ID(類似於圖4之CID 400)。該信號或該等信號640可以包括信標及/或先導信號,其可以係在一或多個符號發送時間週期發射。
端節點630將一訊息650發送至接取節點610。在本發明之一範例性具體實施例中,該訊息650與圖5之範例性訊息500相同或類似。將該訊息650之CID欄位(等效於圖5之CID 520)設定為識別廣播信號640的接取節點620之實體附著點的連接識別號。因而,儘管將該訊息650傳送至接取節點610,但其係專用於接取節點620。應注意由於圖6範例中之端節點630與接取節點620不具有一上行鏈路,故其不能將訊息650直接傳送至該接取節點620。
接取節點610接收訊息650並檢查訊息650之CID欄位(對應圖5之CID 520)並從所儲存的鏈路層識別資訊CID發現其不識別其自身實體附著點之一者。在此一情況下,接取節點610針對訊息650之該CID搜尋其記憶體以針對接取節點620找到至一對應更高層識別號(例如一IP位址)之一映射。
例如,包括多個在一單一鏈路層控制器下進行操作之扇區及/或多個在一單一鏈路層控制器下所使用之載波之一基地台可以具有與一對應於一單一鏈路層控制器之鏈路層識別號相對應的多個CID。在將分離的鏈路層控制器用於每一扇區及/或載波之具體實施例中,可以將不同鏈路層識別號用於每一不同扇區及/或載波。在某些具體實施例中,在實體附著點與鏈路層之間存在一對一映射,但此並非必需,而可以存在若干在一單一鏈路層下操作之實體附著點。因而,多個實體層識別號可對應於相同鏈路層鏈路識別號,但每一實體層識別號連接識別號通常至多映射至一單一鏈路層鏈路識別號。
假定找到至一較高層位址之一映射,接取節點610將訊息650之至少部分囊封入包括一設定為接取節點620之識別號的目的地位址之一網路層訊息660並將該訊息660發送至接取節點620。依據本發明,訊息660還包括一端節點630識別號,該識別號依據該具體實施例係一端節點630 IP位址、端節點630網路接取識別號(NAI)及一暫時識別號之一者。接取節點620接收該訊息660並從其擷取訊息650之囊封部分。接取節點620檢查所擷取的訊息650之囊封部分的CID欄位並確認該CID欄位識別其自身實體附著點之一者。
接取節點620傳送訊息670,該訊息包括接取節點620所接收的囊封於訊息660中的訊息650之至少部分。該訊息670還包括一與包括於訊息660中之一識別號類似的端節點630識別號。然後接取節點610接收訊息670並藉由檢查所包括端節點識別號來決定該訊息670囊封一專用於端節點630之訊息680。然後接取節點610傳送包括該訊息670之至少部分的訊息680。依據本發明訊息680包括廣播信號640的接取節點620之實體附著點的CID。
端節點630從接取節點610接收訊息680但藉由檢查包括於該訊息680中之CID欄位(例如藉由將其與所儲存CID資訊相比),其決定訊息680係回應於更早傳送至接取節點620之訊息650而源自接取節點620。
圖7解說依據本發明之各種具體實施例實行之範例性發信。在圖1所示的範例性系統100之上下文中解說該發信。端節點710係圖2之端節點200之一簡化描述,且其與圖1中的系統100之端節點144、146、144'、146'、144"、146"相同或類似。接取節點740與750類似於圖1中的系統100之接取節點140、140'及140",而且其係使用圖3之接取節點300來實施。在圖7中,端節點710包括一訊息產生模組720與一鏈路選擇模組730。可以藉由在端節點710中執行之應用程式來使用圖7之訊息產生模組720以根據其目的產生訊息。例如,可以將一連接控制協定應用程式包括於端節點710中並使其處於活動狀態,從而允許該端節點710基於在端節點710與接取節點740、750之一者或兩者之間產生、斷開及/或修改鏈路之目的來與接取節點通信。另一範例係一可以包括於端節點710中之服務品質(QoS)應用程式。該QOS應用程式在存在時可以修改端節點710的各種鏈路之QoS特徵。圖7之鏈路選擇模組730針對連接品質測量各種度量(包括鏈路潛時、鏈路通道狀況、鏈路錯誤率及鏈路發送功率要求)以決定(例如按一逐個訊息之方式或於一特定時間點)可獲得鏈路之哪一鏈路對於下一訊息之發送最適合。
所產生的鏈路品質資訊可以(而且在各種具體實施例中係)用於決定在一特定時間點應將一訊息發送至複數個同時鏈路之哪一鏈路。
在圖7中,端節點710與接取節點740與750維持雙向鏈路,此意味著其可以將訊息傳送至接取節點740與750並從接取節點740與750接收訊息。在本發明之此具體實施例中,端節點710之訊息產生模組720產生訊息759,其最終目的地係接取節點740。將訊息759首先傳送於端節點710之鏈路選擇模組730。鏈路選擇模組730在至接取節點740與750之鏈路之間選擇透過其發送下一訊息之鏈路。該鏈路決定功能依據包括鏈路潛時、鏈路通道狀況、鏈路錯誤率及鏈路發送功率要求之至少一者的鏈路特徵。
在圖7所描述的本發明之範例性具體實施例中,該鏈路選擇模組730選擇至接取節點740之鏈路並透過其發送訊息760。訊息760包括訊息759之至少某一部分,在本發明之某一具體實施例中包括用於透過端節點710與接取節點740之間的鏈路發送一訊息之額外欄位。例如,在某些具體實施例中,該等額外欄位係鏈路訊框化欄位。由於訊息759與760之最終目的地係接取節點740,故接取節點740接收訊息760,處理所接收訊息並藉由(例如)將訊息765發送至端節點710來回應。端節點710接收訊息765並將其作為訊息766輸送至訊息產生模組。訊息產生模組720產生一第二訊息769而最終目的地係接取節點740。將訊息769傳送至鏈路選擇模組730,該鏈路選擇模組選擇將透過其發送訊息769之鏈路。在本發明之此具體實施例中,選擇至接取節點750之鏈路且將訊息770發送至接取節點750。訊息770包括訊息769之至少一部分,並在本發明之某些具體實施例中包括用於透過端節點710與750之間的鏈路發送該訊息之額外欄位。例如,在某些具體實施例中,該等額外欄位係鏈路訊框化欄位。
在本發明之一具體實施例中,該鏈路選擇模組730將接取節點740之一識別號(例如一實體附著點識別號)連同訊息769之至少一部分添加於包含訊息770中,因為鏈路選擇模組730所選擇的用於發送訊息770之鏈路並不對應訊息770之最終目的地,該最終目的係接取節點740。在本發明之另一具體實施例中,無論選擇哪一鏈路用於其發送,該鏈路選擇模組皆在其發送該等訊息760與770之前添加訊息760與770的最終目的地之識別號。在本發明之另一具體實施例中,訊息759、769包括其最終目的地之識別號。例如,在圖7的範例性具體實施例之一範例中,該最終目的地之識別號對應接取節點740。
在本發明之一範例性具體實施例中,依據圖5之訊息500來實施訊息770,其中CID欄位520識別接取節點740。接取節點750接收訊息770並對其進行處理。藉由檢查訊息770之最終目的地(例如在圖5的訊息500之CID欄位520中的一實體附著點識別號),接取節點750決定訊息770並非針對其自身而係針對該最終目的地識別號(例如該CID欄位中之一CID)所識別之某一其他節點。該接取節點750在其位址解析表(參見圖3之接取節點300中的位址解析表311)中查詢包含於訊息770中之實體附著點識別號(PID)以找到對應包含於訊息770中的PID之網路位址(例如IP位址)。
接取節點750將訊息770之至少一部分囊封入一適當網路層標頭並將訊息775發送至接取節點740。訊息775包括:訊息770之至少一部分與接取節點740之至少某些IP位址。此外,該訊息775可以並在各種具體實施例中確實包括某些或所有以下特徵:接取節點750之IP位址、包括於訊息770的接取節點740之PID、透過其接收訊息770之接取節點750之PID、端節點710識別號及用於在接取節點750與接取節點740之間囊封(還稱為穿隧)訊息之會話識別號。接取節點740接收訊息775,其從包括於訊息775中之目的地PID將此訊息識別該訊息為針對其自身之一訊息。
在本發明之一具體實施例中,接取節點740藉由發送包括訊息775之至少部分的訊息780來回應。接取節點750接收包括端節點710識別號之訊息780並將訊息785傳送至端節點710。訊息785包括訊息780之至少部分。端節點710接收訊息785並將訊息786傳遞至訊息產生模組720。
在本發明之另一具體實施例中,接取節點740藉由將包括訊息775之至少部分的訊息780'發送至端節點710來回應。透過接取節點740與端節點710之間的直接鏈路發送訊息780'。
圖8解說依據本發明之範例性具體實施例實行之範例性發信,其中將一端節點用作一鄰近者發現與CID發送資訊更新程序之部分。在諸如圖1所示之系統100之一範例性系統之上下文中解說該發信。端節點810係圖2之端節點200之一簡化描述,且其與圖1中的系統100之端節點144、146、144'、146'、144"、146"相同或類似。接取節點840及850與圖1中的系統100之接取節點140、140'及140"相同或類似,而且其可以係(例如)使用圖3所示的類型之接取節點來實施。在圖8之範例中,端節點810與接取節點840具有一雙向通信鏈路,從而允許其將訊息傳送至接取節點840並從接取節點840接收訊息。
在圖8中,端節點810產生訊息860並將其發送至接取節點840。訊息860包括一將接取節點850識別為該訊息之目的地的識別號。接取節點840接收訊息860並藉由搜尋其位址解析表(例如圖3的接取節點300之位址解析表311)嘗試將包括於該訊息中之接取節點850識別號解析至一網路位址。在圖8之範例中,接取節點840無法解析該識別號。接取節點840然後將訊息865發送至端節點810。訊息865包括一由於一解析失敗而不可以發送一訊息之指示。
在本發明之一具體實施例中,端節點810此時藉由交換各種訊息(在圖8中顯示為雙箭頭訊息870)與接取節點850建立一雙向通信鏈路。然而,若已存在與接取節點850之一雙向鏈路,則不必如此。在使用本發明之另一範例中,除與接取節點840之鏈路外,端節點810已具有與接取節點850之一雙向鏈路。
使用與接取節點850之鏈路,該端節點810將一新的鄰近者通知訊息875發送至接取節點850。訊息875包括接取節點840之至少一識別號與接取節點840之網路層位址。以此方式,將一識別號(例如接取節點840之PID)與一對應鏈路層位址(例如MAC位址,該接取節點850可以將其定址並儲存用於未來將實體層解析至網路層識別號)兩者提供給該接取節點850。在本發明之一具體實施例中,該接取節點840識別號係一實體附著點識別號;而在本發明之另一具體實施例中,其係一鏈路層識別號。由在與接取節點840建立鏈路期間或之後傳送至端節點810之通信訊息897,端節點810已知接取節點840之網路層識別號。
在本發明之一替代性具體實施例中,端節點810傳送訊息875'而非訊息875。訊息875'具有與訊息875相同或類似之訊息內容,但其係經由接取節點840傳送至接取節點850而非直接傳送至接取節點850。接取節點840然後將訊息875'作為訊息875"發送至接取節點850。應注意,與訊息860不同,訊息875'係一網路層訊息,其包括該接取節點850網路位址作為其目的地。由在與接取節點850建立鏈路期間或之後所通信之通信訊息899,端節點810已知接取節點850之網路層位址。基於此原因,接取節點840可以使用接取節點850之一網路位址(例如IP位址)將訊息875"發送至接取節點850,而不必實行一CID至位址解析操作。
接取節點850接收訊息875並將從訊息875擷取的新鄰近者產生訊息880傳送至接取節點840之網路位址。訊息880包括針對接取節點850的連接識別號至網路層位址映射。在本發明之另一具體實施例中,訊息880包括針對接取節點850的鏈路層識別號至網路層位址映射。在本發明之另一具體實施例中,訊息880包括用於容納端節點交遞之額外鄰近者資訊,該額外鄰近者資訊包括但不限於:用於在接取節點840與850之間的封包重定向之穿隧位址與穿隧會話識別號;相對於服務品質、負載、協定及所支援應用程式之接取節點850能力。接取節點840接收訊息880並在其記憶體中儲存包括於訊息880中之資訊(例如)以便未來用於CID至網路位址解析操作。接取節點840使用確認接收包括於訊息880中的該資訊之訊息882來回應。
在本發明之一具體實施例中,接取節點840在訊息882中包括以下項目中的某些項目:針對接取節點850的連接識別號至網路層位址映射;針對接取節點850的鏈路層識別號至網路層位址映射;用於容納端節點交遞之鄰近者資訊,該鄰近者資訊包括但不限於用於在接取節點840與850之間的封包重定向之穿隧位址與穿隧會話識別號及/或指示相對於服務品質、負載、協定及所支援應用程式之接取節點840之能力的資訊。接取節點840接收訊息880並在其記憶體中儲存包括於訊息880中之資訊(或例如)以便未來用於發送資訊。在本發明之此特定具體實施例中,不使用訊息883與884。
在本發明之另一具體實施例中,接取節點840訊息882包括對接收包括於訊息880中之資訊的確認。在本發明之此具體實施例中,接取節點840傳送訊息883,該訊息包括以下項目中的至少某些項目:針對接取節點850的連接識別號至網路層位址映射;針對接取節點850的鏈路層識別號至網路層位址映射;用於容納端節點交遞之鄰近者資訊,該鄰近者資訊包括但不限於用於在接取節點840與850之間的封包重定向之穿隧位址與穿隧會話識別號、相對於服務品質、負載、協定及所支援應用程式之接取節點840能力。接取節點850接收訊息883並在其記憶體中儲存包括於訊息883中之資訊(例如)以便未來使用。接取節點850藉由確認該資訊之接收的訊息884來回應。
在經由訊息880、882以及視需要經由883與884在接取節點840與850之間交換鄰近資訊與識別號至位址映射之後,端節點810將訊息890傳送至接取節點840。類似於訊息860,在本發明之一具體實施例中,訊息890還與圖5之訊息500相同或類似。訊息890識別接取節點850為其最終目的地。接取節點840接收訊息890,在其記憶體內搜尋一在該接取節點850識別號與針對該節點850之一網路位址之間的映射並在其位址解析表內找到該先前藉由訊息880填入之網路位址。接取節點840依據該解析表內之資訊來囊封訊息890並將其以訊息891之形式傳送至接取節點850。接取節點850再次使用其位址解析表內之資訊與訊息891而藉由訊息892來回應。接取節點840將包括從接取節點850接收的訊息892之至少部分的訊息893傳送至端節點810,從而經由接取節點840完成端節點810與接取節點850之間的通信交換。
依上述方式,經由使用來自端節點810之訊息,接取節點840與850具有相互的位址及/或PID資訊,其可以用於發送隨後接收的訊息。因此,在將接取節點添加至該網路時,端節點可從廣播信號發現其存在並通知接取節點新的鄰近者。作為該通知程序之部分,在已完成該通知程序後,分配足夠的位址資訊以輔助網路PID為主的訊息發送。
在各種具體實施例中,使用一或多個模組實施本文說明的節點以實行對應於本發明之一或多個方法的步驟,例如信號處理、訊息產生及/或發送步驟。因而,在某些具體實施例種,使用模組來實施本發明之各種特徵。此類模組可使用軟體、硬體或軟體與硬體的組合來加以實施。許多上述方法或方法步驟可使用機器可執行指令(例如軟體)來加以實施,該等指令係包括在諸如一記憶體器件之一機器可讀取媒體(例如RAM、軟碟等)中以控制一機器(例如具有或不具有額外硬體的通用電腦)來實施上述方法之全部或部分,例如在一或多個節點中。因此,除其他方面外,本發明係關於包含機器可執行指令的機器可讀取媒體,該等指令使一機器(例如處理器及相關的硬體)實行上述方法之一或多個步驟。
考慮到本發明之上述說明,熟習此項技術者應明白對上述本發明之方法及裝置的許多額外變更。將此類變更視為在本發明之範疇內。本發明之方法及裝置可以並且在各種具體實施例中係用於CDMA、正交分頻多工(OFDM)或可用以提供接取節點與行動節點之間的無線通信鏈路之各種其他類型通信技術。在某些具體實施例中,將接取節點實施為基地台,其與使用OFDM及/或CDMA之行動節點建立通信鏈路。在各種具體實施例中,將行動節點實施為筆記型電腦、個人資料助理(PDA)或包含接收器/發射器電路與邏輯及/或常式的其他可攜式器件,其用以實施本發明之方法。
100...通信系統
102...網路
104...伺服器節點
105...網路鏈路
106...節點
107...網路鏈路
110...中間網路節點
111...網路鏈路
112...中間網路節點
140...接取節點
140'...接取節點
140"...接取節點
141...網路鏈路
141'...網路鏈路
141"...網路鏈路
144...端節點
144'...端節點
144"...端節點
145...接取鏈路
145'...接取鏈路
145"...接取鏈路
146...端節點
146'...端節點
146"...端節點
147...接取鏈路
147'...接取鏈路
147"...接取鏈路
148...無線電覆蓋區域(例如通信小區)
148'...無線電覆蓋區域(例如通信小區)
148"...無線電覆蓋區域(例如通信小區)
200...端節點
202...外罩
204...處理器
206...匯流排
210...記憶體
212...發信/控制模組
213...鏈路選擇模組
214...發信/控制資料
216...組態資訊
218...操作資訊
230...無線通信介面
232...接收器模組
234...發射器模組
236...接收天線
238...發送天線
240...使用者輸入/輸出介面
242...使用者輸入器件
244...使用者輸出器件
251...訊息產生模組
260...實體層附著點識別號(PID)資訊
261...PID1
262...PID2
270...實體層附著點識別號(PID)決定模組
271...小區識別模組
272...載波識別模組
273...扇區識別模組
280...鄰近者通知訊息
281...發信訊息
290...鄰近者通知模組
292...訊息發送控制模組
294...鏈路建立模組
300...接取節點
302...外罩
304...處理器
306...匯流排
310...記憶體
311...位址解析表
311'...位址解析表
312...映射模組
314...信號產生模組
317...IP位址映射
320...網路/網際網路介面
322...接收器模組
324...發射器模組
330...無線通信介面
332...接收器模組
334...發射器模組
336...接收天線
338...發送天線
340...上行鏈路資源配置資訊
341...配置到一端節點X之資源
345...下行鏈路資源配置資訊
346...配置到一端節點X之資源
350...封包發送模組
351...端節點識別模組
400...連接識別號(CID)
410...斜率
420...扇區
430...載波
500...訊息
510...鏈路層控制(LLC)類型欄位
520...CID欄位
530...訊息主體
610...接取節點
620...接取節點
630...端節點
640...廣播訊息/廣播信號
650...訊息
660...網路層訊息
670...訊息
680...訊息
710...端節點
720...訊息產生模組
730...鏈路選擇模組
740...接取節點
750...接取節點
759...訊息
760...訊息
765...訊息
766...訊息
769...訊息
770...訊息
775...訊息
780...訊息
780'...訊息
785...訊息
786...訊息
810...端節點
840...接取節點
850...接取節點
860...訊息
865...訊息
870...訊息
875...鄰近者通知訊息
875'...訊息
875"...訊息
880...鄰近者產生訊息
882...訊息
883...訊息
884...訊息
890...訊息
891...訊息
892...訊息
893...訊息
897...通信訊息
899...通信訊息
902...PID
903...IP位址
904...PID
905...IP位址
906...PID
907...IP位址
908...PID
909...IP位址
910...PID
911...IP位址
912...PID
913...IP位址
圖1解說依據本發明實施之一範例性通信系統之一網路圖。
圖2解說依據本發明實施之一範例性端節點。
圖3解說依據本發明實施之一範例性接取節點。
圖4解說依據本發明實施之一範例性連接識別號。
圖5解說依據本發明實施的使用圖4之連接識別號之一範例性訊息。
圖6解說在一端節點與一接取節點維持一雙向連接並要與另一接取節點通信時,依據本發明實行之範例性發信。
圖7解說在一端節點與多個接取節點維持雙向連接時,依據本發明實行之範例性發信。
圖8解說在一端節點在兩個接取節點之間觸發一鄰近者發現程序時,依據本發明實行之範例性發信。
圖9解說一範例性PID至較高層級位址解析表,其可以係用於在PID與對應較高層級位址之間(至PID與對應更高層級位址/從PID與對應更高層級位址)的映射。
810...端節點
840...接取節點
850...接取節點
860...訊息
865...訊息
870...訊息
875...鄰近者通知訊息
875'...訊息
875"...訊息
880...鄰近者產生訊息
882...訊息
883...訊息
884...訊息
890...訊息
891...訊息
892...訊息
893...訊息
897...通信訊息
899...通信訊息
Claims (29)
- 一種操作一無線終端的方法,該方法包含:透過一第一無線通信鏈路將一第一訊息發送至一第一接取節點,其中該第一訊息包含一目的地識別號,其將一第二接取節點識別為該第一訊息之一目的地;從該第一接取節點接收一信號,該信號指示該第一接取節點不可獲得發送資訊,其用於使用包括於該第一訊息中之該目的地識別號發送該第一訊息;以及將一鄰近者通知發送至對應該目的地識別號之該第二接取節點,該鄰近者通知包括對應該第一接取節點之識別資訊。
- 如請求項1之方法,其進一步包含:在接收該信號之後並在發送該鄰近者通知訊息之前,與該第二接取節點建立一第二無線通信鏈路,其中該第二無線通信鏈路係隨著該第二接取節點被建立並且該鄰近者通知訊息係被發送至該第二接取節點以回應於自該第一接取節點接收該信號。
- 如請求項2之方法,其進一步包含:在發送該鄰近者通知訊息之後,將一第二訊息發送至該第一接取節點,該第二訊息包括該目的地識別號,其將該第二接取節點識別為該第二訊息之一目的地,其中在該第二接取節點已經將致使該第一接取節點能夠發送該第二訊息至該第二接取節點之該發送資訊提供予該第一接取節點之後,該第二訊息係被發送至該第一接取節 點。
- 如請求項3之方法,其進一步包含:從該第二接取節點接收該第二訊息之一回應。
- 如請求項1之方法,其中該目的地識別號係一實體附著點識別號,其於該第二接取節點識別一實體附著點。
- 如請求項5之方法,其中對應該第一接取節點之該識別資訊包括以下資訊之至少一者:i)對應該第一接取節點之一實體附著點識別號;ii)對應該第一接取節點之一鏈路層附著點識別號;以及iii)對應該第一接取節點之一網路層IP位址。
- 如請求項6之方法,其中發送該鄰近者通知訊息包括經由該第一接取節點將該鄰近者通知訊息發送至該第二接取節點;以及其中該鄰近者通知訊息包括以下訊息之至少一者:i)對應該第二接取節點之一鏈路層附著點識別號以及ii)對應該第二接取節點之一網路層IP位址。
- 如請求項5之方法,其中該實體附著點係一無線鏈路附著點。
- 如請求項8之方法,其中該實體附著點識別號包括以下識別號之至少兩個:一小區識別號、一載波識別號以及一扇區識別號。
- 如請求項1之方法,其中該目的地識別號係一鏈路層識別號,其於該第二接取節點識別一鏈路層附著點。
- 如請求項10之方法,其中對應該第一接取節點之該識別 資訊包括以下資訊之至少一者:i)對應該第一接取節點之一實體附著點識別號;ii)對應該第一接取節點之一鏈路層附著點識別號;以及iii)對應該第一接取節點之一網路層IP位址。
- 如請求項11之方法,其中發送該鄰近者通知訊息包括經由該第一接取節點將該鄰近者通知訊息發送至該第二接取節點;以及其中該鄰近者通知訊息包括以下訊息之至少一者:i)對應該第二接取節點之一鏈路層附著點識別號以及ii)對應該第二接取節點之一網路層IP位址。
- 一種無線終端,其包含:一接收器模組,其係用於從一第一接取節點接收一信號,該信號指示該第一接取節點不可獲得發送資訊,其用於使用包括於一第一訊息中之一目的地識別號發送該第一訊息;一發射器模組;一鄰域通知訊息發送模組,其係用於回應從該第一接取節點接收之該信號,而將一鄰近者通知訊息發送至對應於該目的地識別號之一第二接取節點,該鄰近者通知訊息包括對應該第一接取節點之識別資訊;以及一訊息發送控制模組,其係用於在從該第一接取節點接收該信號之前,控制該發射模組透過一無線通信鏈路將該第一訊息發送至該第一接取節點,其中在該第一訊息中之該目的地識別號將該第二接取節點識別為該第一 訊息之一目的地。
- 如請求項13之無線終端,其進一步包含:一鏈路建立模組,其係用於與該第二接取節點建立該無線通信鏈路。
- 如請求項13之無線終端,其中該目的地識別號係一實體附著點識別號,其於該第二接取節點識別一實體附著點。
- 如請求項15之無線終端,其中對應該第一接取節點之該識別資訊包括以下資訊之至少一者:i)對應該第一接取節點之一實體附著點識別號;ii)對應該第一接取節點之一鏈路層附著點識別號;以及iii)對應該第一接取節點之一網路層IP位址。
- 如請求項16之無線終端,其進一步包含記憶體,其係用於在發送之前儲存該鄰近者通知訊息,且其中該鄰近者通知訊息包括以下訊息之至少一者:i)對應該第二接取節點之一鏈路層附著點識別號以及ii)對應該第二接取節點之一網路層IP位址。
- 如請求項15之無線終端,其中該實體附著點係一無線鏈路附著點。
- 如請求項18之無線終端,其中該實體附著點識別號包括以下識別號之至少兩個:一小區識別號、一載波識別號及一扇區識別號。
- 如請求項13之無線終端,其中該目的地識別號係一鏈路層識別號,其於該第二接取節點識別一鏈路層附著點。
- 如請求項20之無線終端,其中對應該第一接取節點之該 識別資訊包括以下資訊之至少一者:i)對應該第一接取節點之一實體附著點識別號;ii)對應該第一接取節點之一鏈路層附著點識別號;以及iii)對應該第一接取節點之一網路層IP位址。
- 如請求項13之無線終端,其進一步包含:記憶體,其係用於在發送之前儲存該鄰近者通知訊息,其中該鄰近者通知訊息包括以下訊息之至少一者:i)對應該第二接取節點之一鏈路層附著點識別號以及ii)對應該第二接取節點之一網路層IP位址。
- 一種無線終端,其包含:用於透過一無線通信鏈路將一第一訊息發送至一第一接取節點之構件,其中該第一訊息包含一目的地識別號,其將一第二接取節點識別為該第一訊息之一目的地;用於從該第一接取節點接收一信號之構件,該信號指示該第一接取節點不可獲得發送資訊,其用於使用包括於該第一訊息中之該目的地識別號發送該第一訊息;以及用於將一鄰近者通知發送至對應該目的地識別號之該第二接取節點之構件,該鄰近者通知包括對應該第一接取節點之識別資訊。
- 如請求項23之無線終端,其中該目的地識別號係一實體附著點識別號,其於該第二接取節點識別一實體附著點。
- 如請求項23之無線終端,其中該目的地識別號係一鏈路 層識別號,其於該第二接取節點識別一鏈路層附著點。
- 一種無線終端,其包含:電路,其經組態以透過一無線通信鏈路將一第一訊息發送至一第一接取節點,從該第一接取節點接收一信號,該信號指示該第一接取節點不可獲得發送資訊,其用於使用包括於該第一訊息中之一目的地識別號發送該第一訊息;以及將一鄰近者通知發送至對應該目的地識別號之該第二接取節點,其中在該第一訊息中之該目的地識別號將一第二接取節點識別為該第一訊息之一目的地,以及其中該鄰近者通知包括對應該第一接取節點之識別資訊。
- 如請求項26之無線終端,其中該目的地識別號係一實體附著點識別號,其於該第二接取節點識別一實體附著點。
- 如請求項26之無線終端,其中該目的地識別號係一鏈路層識別號,其於該第二接取節點識別一鏈路層附著點。
- 一種非暫態機器可讀取媒體,其包含可執行下列動作之指令:透過一無線通信鏈路將一第一訊息發送至一第一接取節點,其中該第一訊息包含一目的地識別號,其將一第二接取節點識別為該第一訊息之一目的地;從該第一接取節點接收一信號,該信號指示該第一接取節點不可獲得發送資訊,其用於使用包括於該第一訊息中之該目的地識別號發送該第一訊息;以及 將一鄰近者通知發送至對應該目的地識別號之該第二接取節點,該鄰近者通知包括對應該第一接取節點之識別資訊。
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JP2009521867A (ja) | 2009-06-04 |
PL1964339T3 (pl) | 2010-11-30 |
US9078084B2 (en) | 2015-07-07 |
EP1964339A1 (en) | 2008-09-03 |
DE602006015354D1 (de) | 2010-08-19 |
KR20120101568A (ko) | 2012-09-13 |
CN101331722A (zh) | 2008-12-24 |
CN103561399B (zh) | 2017-04-26 |
ATE473570T1 (de) | 2010-07-15 |
KR20100133464A (ko) | 2010-12-21 |
ES2346696T3 (es) | 2010-10-19 |
US20070147283A1 (en) | 2007-06-28 |
KR20140019883A (ko) | 2014-02-17 |
CN103561399A (zh) | 2014-02-05 |
BRPI0620304B1 (pt) | 2019-08-13 |
EP1964339B1 (en) | 2010-07-07 |
AR058644A1 (es) | 2008-02-13 |
JP4733190B2 (ja) | 2011-07-27 |
RU2419230C2 (ru) | 2011-05-20 |
RU2008130055A (ru) | 2010-01-27 |
KR20080087853A (ko) | 2008-10-01 |
TW200742453A (en) | 2007-11-01 |
BRPI0620304A2 (pt) | 2011-11-08 |
KR101312218B1 (ko) | 2013-09-27 |
WO2007075955A1 (en) | 2007-07-05 |
CA2630585A1 (en) | 2007-07-05 |
KR101495947B1 (ko) | 2015-02-26 |
CA2630585C (en) | 2017-03-21 |
CN101331722B (zh) | 2013-11-06 |
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