TW200421755A - Method and apparatus for broadcast services in a communication system - Google Patents
Method and apparatus for broadcast services in a communication system Download PDFInfo
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- TW200421755A TW200421755A TW092137662A TW92137662A TW200421755A TW 200421755 A TW200421755 A TW 200421755A TW 092137662 A TW092137662 A TW 092137662A TW 92137662 A TW92137662 A TW 92137662A TW 200421755 A TW200421755 A TW 200421755A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/26—Arrangements for switching distribution systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0007—Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/12—Reselecting a serving backbone network switching or routing node
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
Description
200421755 玖、發明說明: 【發明所屬之技術領域】 本發明大體上係關於通信領域,且更特定言之,係關於 一通信系統内廣播服務之通信。 【先前技術】 在一無線通信系統中,使用者之不必要及過度的傳輸除 了可減少該系統容量之外還可導致對其他使用者産生干 擾。藉由在該通信系統中請求傳輸不必要的資料,可導致 该不必要及過度的傳輸。一用於廣播應用之系統可要求使 用特定的廣播參數。在接收該等廣播服務之前的時間中, 行動台可請求自一服務基地台傳輸該等廣播參數。此等廣 播參數可包含廣播調變格式資訊、資料速率資訊、加密密 鑰資訊、編碼資訊、廣播通道頻率資訊以及其它相似類型 的資訊。一共同廣播控制器可控制若干個基地台。因此, 只要行動台位於該等基地台之覆蓋區域範圍中,該行動台 就不必請求該等廣播參數之傳輸。,然而,當行動台移動至 新的基地台之覆蓋區域時,該行動台可不具有一可靠的方 式來判定該新的基地台是否使用相同或不同的廣播控制 器。因而,每當該行動台移動至—新的基地台之覆蓋區域 時’該行動台均可能請求廣播參數之傳輸。言t求及接收該 等廣播參數之傳輸可中斷在行動台處所播放的廣播服務, 並在通信系統中導致不必要及過度的傳輸。 "因此’需要-種用於更新供於—通信系統内廣播服務之 行動台廣播參數之方法、裝置與系統。
0 \90VJ0450 DOC 200421755 【發明内容】 本I月k ί、種用於有效使用通信資源之方法、裝置與 系統,以供於一通信系統内提供廣播服務。一接收器自第 基地台接收一第一廣播控制器識別,並自第二基地台接 收一第二廣播控制器識別。一耦接至該接收器之控制器判 定該等第一及第二廣播控制器識別是否與一共同組的廣播 芩數之使用相關聯。當該等第一及第二廣播控制器識別與 忒共同組的廣播參數之使用不相關聯時,一傳輸器將傳輸 對傳輸一組新的廣播參數之請求。在接收到該組新的廣播 參數之後,該接收器將使用該組新的廣播參數以接收廣播 服務。 【實施方式】 整體而言,本發明提供一用於有效使用通信資源之新穎 及改良的系統、方法與裝置,以供一通信系統内之廣播服 務。一組廣播參數與根據本發明之各種態樣的一個或多個 廣播控制器相關聯。當藉由第一基地台使用第一廣播控制 器時,自第二基地台對一第二廣播控制器識別之獲得將觸 發一過程以判定該等第一與第二廣播控制器識別是否與一 共同組的廣播參數相關聯。當該等第一與第二廣播控制器 識別與根據本發明之各種態樣的一共同組廣播參數不相關 聯時,則觸發請求一組新的廣播參數之傳輸。在一數位無 線資料通信系統之情形中提出了本文所述的一個或多個例 示性實施例。儘管在該情形中之使用是有利的,但玎將本 發明之不同實施例倂入於不同的環境或組態中。大體而
O:\90\90450 DOC 200421755 言,可使用軟體控制之處理器、積體電路或離散邏輯來形 成本文所描述的各種系統。可藉由電壓、電流、電磁波、 磁場或粒子、光場或粒子、或其組合來有利地表示可貫穿 於該申請案所參考的該等資料、指令(instruction)、命令 (command)、資訊、訊號、符號以及晶片。此外’母一方塊 圖中所展示的區塊可表示硬體或方法步驟。 更具體言之,可將本發明之各種實施例倂入一根據劃碼 多項近接(CDMA)技術而運行的無線通信系統中’在由電信 工業協會(TIA)及其他標準組織所公開的各種標準中已揭 示並描述了該劃碼多項近接(CDMA)技術。該等標準包括 TIA/EIA-95標準、TIA/EIA_1S_2000標準、IMT-2000標準、 UMTS及WCDMA標準,所有標準均以引用的方式倂入本文 中。用於資料通信之系統亦詳述於"TIA/EIA/IS-856 cdma2000高速封包資料空氣介面規格’’中,其以引用的方式 倂入本文中。藉由於位址http://www.3gpp2.org存取全球資 訊網,或藉由發函至 TIA,Standards and Technology Department, 2500 Wilson Boulevard, Arlington, VA 22201, United States of America(美國VA22201阿林頓威爾遜大街 2500,標準及技術部,TIA),可獲得一份標準。可藉由聯 繫 3GPP Support Office,650 Route des Lucioles-Sophia Antipolis,Valbonne-France,可獲得通常識別爲UMTS標準 的標準,其以引用的方式倂入本文中。 圖1說明了一通信系統100之概略方塊圖,該通信系統100 能夠根據任何劃碼多項近接(CDMA)通信系統標準來運
O:\90\90450DOC 200421755 行,同時可倂入了本發明之各種實施例。通信系統1〇〇可用 於語音(voice)、資料或該等兩者之通信。通常,通信系統 iOO包含一基地台HH,該基地台1〇1在若干行動台(例如行 動台102-104)之間及在該等行動台1〇2_1〇4與_公衆交換電 話及資料網路105之間提供通信鏈路。在不會脫離本發明之 主要範圍及各種優勢的情況下’可將圖i中的該等行動台稱 爲資料存取終端機(AT),而將該基地台稱爲資料存取=路 (AN)。基地台1G1可包括若干組件,例如__基地台㈣器及 -基地收發m爲簡單起見’圖中未展示該等組件。 基地台101可與其它基地台(例如基地台16〇)通信…行動交 換中心(未圖示)可控制該通信系統⑽之各種運行態樣,並 與-位於網請與基地台1〇1*16〇之㈣回程傳輸 (back-haul)199相關聯。 藉由-自基地台1〇1所傳輸的前向鏈路訊號,基地台ι〇ι 可與位於其覆蓋區域中的每一行動台通信。可將以行動台 :02-104爲目標的前向鏈路訊號合計以形成一前向鏈路訊 號106。該前向鏈路可截運婪 一 戰運右干不同的前向鏈路通道。接收 前向鍵路訊號1G6之該等行動台⑽♦中的每-個均解碼 該前向鏈路訊號1G6,以提取以其使用者爲目標的資訊。藉 由一自基地台16G所傳輸的前向鏈路訊號,基地台160亦可 ^於其覆蓋區域中之行動台通信。藉由對應的反向鏈 ’:動台102-104可與基地台101及160通信。每 一反向鏈 反向鏈路訊號維持’例如分別用於行動台·ι〇4的 °鏈路汛號107-1〇9。儘管該等反向鏈路訊號1〇7_1〇9可能
O:\90\90450 DOC 200421755 以一個基地台爲目標,但是其可在其它基地台處被接收。 基地台1 0 1及1 60可同時與一共同行動台通信。舉例而 言’行動台1 02可位於基地台1 〇 1與1 60附近,其可維持與基 地台101及160兩者之通信。在前向鏈路上,基地台1〇丨於前 向鏈路訊號106上傳輸,而基地台16〇於前向鏈路訊號161上 傳輸。在反向鏈路上,行動台102於將被基地台1〇1與16〇兩 者所接收的反向鏈路訊號1 〇7上傳輸。爲了將一資料封包傳 輸至行動台102,可選擇基地台1〇1與16〇中的一個,以將該 資料封包傳輸至行動台1〇2。在該反向鏈路上,基地台ι〇ι | 與160兩者均試圖解碼來自行動台1〇2的通信量資料(traffic data)傳輸。可根據基地台與行動台之間的通道狀況來維持 該等反向與前向鏈路的資料速率及功率位準。 通#系統100亦可向該等行動台廣播服務提供。廣播服務 可包括藉由基地台1〇1與160來接收視訊或音訊(audi〇)廣 播。在另一實例中,可爲該等行動台廣播天氣或通信資訊。 在一廣播系統令,可同時將相同的訊號發送至大量的行動 台。可將該廣播訊號加密。因此,該等行動台可需要爲獲· 付該寻服務進行登記。行動台在接收該等服務之前可能需 要自基地σ獲付加密貧訊。此外,該行動台可能需要接收 κ、 「播4數’以接收该等廣播服務。該等廣播參數可包 括廣播通道識別符、廣播調變格式資訊、資料速率資訊、 加密密餘資訊、編碼資訊、廣播通道頻率資訊、加密與解 密密输資訊、標頭壓縮資訊及其它相似類型的資訊。可藉 由廣播k制器來控制該等廣播服務。該廣播控制器提供廣
Q:\90V90450 DOC -10- 200421755 播服私之廣播程式設計(pr〇gramming) '傳輸及控制。該廣 播控制器亦將上述廣播參數提供至經授權的行動台。該廣 播&制器可在提供廣播參數之前驗證行動台是否已爲所請 求的廣播服務進行登記。 通信系統100可具有一個或多個廣播控制器。舉例而言, 在貫靶例中,基地台1 〇 1與160可使用一共同廣播控制器 I53。將一共同組的廣播參數提供至基地台101與160,並提 ί、至位於基地台丨0丨與i 6〇之覆蓋區域内的行動台。根據本 發明之各種態樣,基地台101與160傳輸一廣播控制器識 別。當一行動台漫遊至一基地台之覆蓋區域中時,該行動 台將接收該廣播控制器識別。該廣播控制器識別可由該基 地台周期性地傳輸,或基於一行動台之請求而傳輸。在另 一實施例中,廣播控制器識別可包括當一行動台漫遊至新 的基地台之覆蓋區域内時其通常自基地台所獲取的其它資 汛。倂入本文的各種互操作性標準提供了用於當一行動台 度遊至一新的覆蓋區域中時進行資訊交換之一種或多種方 法。 在另一實施例中,於通信系統100中,基地台101可使用 廣播控制器151,且基地台160可使用一不同的廣播控制器 152。由該等廣播控制器151與152所使用的廣播參數可不相 同。因此,自基地台101與160所接收的廣播控制器識別並 非與一共同組的廣播參數相關聯。如此,當一行動台自基 地台101之覆蓋區域漫遊至基地台160之覆蓋區域中:,二 行動台需要接收一組與該廣播控制器152相關聯的新的廣
OA90V90450 DOC -11 - 200421755 播參數。 參看圖2,根據本發明之各種態樣,流程圖27〇概述了一 自一第一基地台之覆蓋區域漫遊至一第二基地台之覆蓋區 域之行動台可執行的若干步驟,以有效接收並改變該等廣 播參數,以便接收通信系統100内的廣播服務。於步驟27 i, 行動台(例如自基地台101之覆蓋區域漫遊至基地台16〇之 覆蓋區域的行動台102)已接收到一來自第一基地台(例如基 地台101)的第一廣播控制器識別。於步驟272,該行動台接 收一來自第二基地台(例如基地台丨60)的第二廣播控制器識 別。該第一廣播控制器識別可與廣播控制器151相關聯,且 该第二廣播控制器識別可與廣播控制器i 52相關聯。於步驟 273,該行動台可判定該第一及該第二廣播控制器識別是否 與一共同廣播參數相關聯。在一實施例中,該等廣播控制 杰1 5 1與1 52可使用相同的參數。在另一實施例中,該等第 一與第二廣播控制器識別可與一共同廣播控制器153相 關,該廣播控制器153可用於基地台101與16〇兩者。如此, 於步驟274,該行動台繼續使用相同的廣播參數,以接收該 等廣播服務。於步驟275,若該第-及該第二廣播控制器識 別與一共同廣播參數不相關聯,則該行動台請求自第二廣 播控制器(例如廣播控制器丨52)傳輸一組新的廣播參數。該 等參數之傳輸可由第二基地台(例如基地台16〇)進行。於步 驟276,該行動台接㈣組新的錢參數,錢、該組新的 廣播參數來繼續接收廣播服務。 圖3 σ兒明了用於傳輸該等反向及前向鍵路訊號之傳輸
O:\90\90450 DOC -12- 200421755 器3 00的方塊圖。該傳輸器3 〇〇可用於傳輸基本通道、控制 通道、補充通道以及廣播通道。供傳輸之廣播通道資料輸 入至一用於調變之調變器30 1。該調變可根據任何通常已知 的技術,諸如QAM、PSK或BPSK。在調變之前,供傳輸之 廣播通道資料可通過一個或多個編碼層。可藉由資料速率 及功率位準選擇器303來選擇調變資料速率。該資料速率選 擇可基於自一目的地所接收的反饋資訊,或可固定用於廣 播通道。在反饋情況下,該資料速率通常基於通道狀況, 及其它考慮之因素。該資料速率及功率位準選擇器3〇3相應 地選擇調變器301中的資料速率。調變器3〇1之輸出經歷一 訊號擴展運行並於區塊302中放大,以供自天線3〇4傳輸。 該資料速率及功率位準選擇器303亦爲所傳輸的訊號之放 大位準選擇一功率位準。所選擇的資料速率與該功率位準 之組合允許在接收目的地正確地解碼所傳輸的資料。於區 塊3 07中亦産生一導向訊號。將該導向訊號在區塊中放 大至適當的位準。該導向訊號功率位準可符合接收目的地 處之通道狀況。可在組合器308中將該導向訊號與通道訊號 組合。可將所組合的訊號可在放大器3〇9中放大,並自天線 3&〇4傳輸。該天線3〇4可爲包括天線陣列與多輸入多輸出組 〜、的任何數置之組合。用於傳輸廣播通道資料之所選擇的 調變、資料速率及編碼技術可符合由廣播控制器所提出的 廣播參數。舉例而言,若基地台1〇1(併入有傳輸器3〇〇)正傳 輸β廣播通道’且廣播控制器151正控制該廣播資訊,則將 廣播控制器m之廣播參數用於傳輸器扇中,以傳輸廣播
〇:V)0\90450 DOC -13- 200421755 通逼。因此’所選擇的調變、資料速率及編碼技術可爲該 組廣播參數中需要與傳播至行動台的三個廣播參數。 圖4說明了一接收器2〇〇之方塊圖,該接收器用於處理與 解調變所接收的CDMA訊號,同時根據本發明之各種態樣 運行。接收器200可用於解碼位於反向與前向鏈路訊號上的 資Λ。接收器2 0 0可用於解碼位於基本通道、控制通道、補 充通道以及廣播通道上的資訊。可將所接收的(Rx)樣本儲 存於RAM(隨機存取記憶體)204中。接收樣本由射頻/中頻 (RF/IF)系統290與天線系統292産生。該RF/IF系統29〇與天 着 線糸統292可包含用於接收多個訊號及用kRF/if處理所接 收之訊號的一個或多個組件,以利用接收分集增益。經由 不同傳播路徑所傳播的多個所接收訊號可來自一共同源。 天線系統292接收該等RF訊號,並將該等RF訊號傳送至 RF/IF系統290。RF/IF系統290可爲任何習知RF/IF接收器。 將所接收的RF訊號過濾、降頻轉換(d〇wn_c〇nvert)及數位 化,以形成處於基帶頻率的RX樣本。將該等樣本供應至多 工器(mux)252。將mux 252之輸出供應至搜索器單元2〇6與 嬸 指狀元件(finger element)2〇8。一控制系統21〇耦接至此處。 組合器212將解碼器214耦接至指狀元件2〇8。控制系統21〇 可爲一由軟體控制之微處理器,並可位於同一積體電路上 或位於分離的積體電路上。解碼器214中之解碼函數可符合 渦輪式解碼器(turbo decoder)或任何其它合適的解碼演算 法。可藉由若干層碼來對自一源所傳輸的訊號進行編碼。 如此,解碼器2 14根據該等程式碼來對所接收的樣本進行解
0 \90\90450 D0C •14- 200421755 碼。解碼器214可根據在廣播參數中接收的編碼資訊來執行 解碼功能。 在運行期間,將所接收的樣本供應至㈤⑽252。Mux 252 將樣本供應至搜索器單元206及指狀元件208。控制單元21〇 組態指狀元件208,以在基於來自搜索器單元206之搜索結 果的不同時間偏移處執行所接收訊號之解調變及解擴展 (despreading)。將解調變之結果於組合器212中組合,並傳 送至解碼器2 14。可根據在廣播參數中所接收的調變資訊來 執行解調變功能。解碼器214將資料解碼並輸出解碼之資 I 料。藉由將所接收之樣本乘以PN序列與所指派之Walsh函數 於一單一定時設定(timing hypothesis)處的複共軛並數位地 過濾所得的樣本,通常經由一積體及轉儲累加器電路 (integrate and dump accumulator circuit)(未圖示)來執行該 等通道之解擴展。此項技術中通常已知此一技術。可將接 收器200用於基地台1〇1與160之接收器部分以處理來自行 動台所接收之反向鏈路訊號,且用於該等行動台中的任何 一個之接收器部分以處理所接收的前向鏈路訊號。 圖5描繪了 一收發器系統5〇〇之總圖,該收發器系統5〇〇 用於倂入接收器200及傳輸器300,以維持與一目的地的通 信鏈路,包括接收廣播通道。可將該收發器5〇〇倂入於一行 動台或一基地台中。可將處理器4〇1耦接至接收器2〇〇及傳 輸為3 00,以處理所接收及所傳輸之資料。儘管獨立展示了 接收器200與傳輸器300,但接收器2〇〇與傳輸器3〇〇之各種 態樣可爲共同的。在一態樣中,接收器2〇〇與傳輸器3〇〇可 O:\9O\9045O.DOC -15- 200421755 共用一共同本機振盪器及一共同天線系統,以供RF/IF接收 及傳輸。傳輸器300於輸入405上接收供傳輸的資料。傳輸 資料處理區塊403準備用於在傳輸通道上傳輸的資料。若該 傳輸通道爲一廣播通道,則根據由收發器5 〇 〇所使用的廣播 參數來進行資料之處理。所接收的資料於解碼器214中被解 瑪之後’在處理器40 1之輸入404處被接收。在位於處理器 4〇1中的接收資料處理區塊402中處理所接收的資料。若該 接收通道爲一廣播通道,則根據傳輸器所使用的用於傳輸 廣播通道之廣播參數來對所接收之廣播資料進行處理。可 將處理态401之各種運行整合於一單一或多個處理單元 中可將收發器500連接至另一設備。該收發器5〇〇可爲該 設備之一組成部分(integral part)。該設備可爲一電腦或以 類似於電腦之方式運行。可將該設備連接至一資料網路, 如網際網路。在將收發器5〇〇倂入一基地台中的狀況下,可 藉由若干連接將該基地台連接至一網路,如網際網路。 對所接收的資料之處理通常包括檢查所接收的資料封包 中之誤差。舉例而言,若接收的資料封包所具有的誤差處 於不可接受的程度,則接收資料處理區塊4〇2將一指令發送 至傳輸資料處理區塊403,以産生一再傳輸該資料封包之請 求在傳輸通道上傳輸該請求。然而,對於廣播通道, 該接收器運行可不包括對再傳輸之請求。該廣播服務可包 含自基地台發送視訊並在行動台播放相同的視訊。每次可 以資料塊傳輸廣播通道資料。如此,接收資料儲存區塊 480可累積在每一資料訊框中接收的資料,來重新構造該資
O:\90\90450 DOC -16- 料塊,以供在行動台播放該等廣播服務之視訊。 一廣播控制g,例如廣播控制器151、152及153中之任何 -個’可控制通信系統中大量的基地台的廣播服務。一袓 基地台可形成基地台之子網路。該基地台可將一子網路識 別符傳輸至行動台。該子網路識別符識別該子網路。一子 網路中所有基地台可由相同的廣播控制器來服務。根據本 發明之各種態樣’自子網路中的每—基地台所發送的子網 路識另!可^不其屬於—共同子網路。如此,當行動台於— 子網路之該等基地台之間漫遊時,該行動台爲廣播服務使 用相同的廣播參數。根據本發明之各種態樣,該行動台判 定(當參看® 2’於步驟273)該等第—與第二基地台是否屬於 具有-共同廣播控制器、且因此具有共同廣播控制器識 別及共同廣播參數的共同子網路。如&,當該等第一與第 二基地臺屬於-共同子網路時,該行動台爲廣播服務使用 相同的廣播參數。當該等第一與第二基地臺屬於不同的子 網路時(於步驟275及296),該行動台可請求並接收—組新的 廣播參數。 此外’在另一例示性實施例中,可由一共同廣播控制器 來控制若干子網路。參相6,其展* 了—例轉通信系統 子網路組態6GG。廣播控制器㈣可控制子網路術及子網路 6中的所有基地σ之廣播服務。廣播控制器可控制子 網路603中的所有基地台之廣播服務。如此,當行動台判定 基地臺屬於不同的子網路時,該行動台及/或基地台判定該 仃動口疋否需要一組新的廣播參數。用於判定是否需要一
0 \90\90450 DOC -17- 200421755 組新的廣播參數之通信可爲藉由若干訊息之通信。舉例而 该基地台可判定先前基地台之子網路及當前基地台之 子網路是否由相同的廣播控制器來服務。該基地台可藉由 維持由服務該基地台之廣播控制器所服務的其它子網路之 清單來執行該功能。在另一實施例中,該基地台或者該廣 播控制器中的任一個將由一共同廣播控制器所控制的子網 路之’月單舍送至该行動台。該清單亦可爲用於識別每一子 網路之基地台成員的識別符。可將子網路之清單連同廣播 參數一起發送至該行動台。當該行動台進入一屬於一不同 的子網路之基地台的覆蓋區域時,該等行動台將檢查該新 的子、’·罔路疋否包含於由當前廣播控制器所控制的子網路清 單中。若如此,則該行動台繼續使用當前廣播參數。否則, 該行動台自該新的廣播控制器請求一組新的廣播參數。由 於子,’周路清單可非常大,因而該廣播控制器僅可將由該廣 播控制器所控制的子網路之一部分清單提供至行動台。當 該行動台移動至包含於當前清單中的子網路的邊緣時,可 更新該清單。在另一實施例中,可藉由指示一系列連續的 子網路識別數字對資訊進行編碼。因此,該訊息可包含該 系列連續的子網路(或基地台)識別數字之第一及最後子網 =識或基地台識別數字)。在另—實施例中,因爲該行動 台可能正進入由不同的廣播控制器所控制的子網路中的基 地台之覆蓋區域,所以毗連該覆蓋區域的基地台可傳輸一 指示需要請求一組新的廣播參數之訊息。在該種狀況二 當該行動台自一由第一廣播控制器所控制的第一子網路之
O:\90\90450 DOC -18- 200421755 基地台度遊至一由第二廣播控制器所控制的第二子網路之 另一基地σ時,該行動台將一請求發送至該第二基地台, 用於傳輸與该第二廣播控制器相關聯的廣播參數。 廣播通道可傳輸經加密的資料,以防止未經授權之使用 者使用a亥等廣播服務。圖5中所展示的使用者識別模組 (UIM)499可含有包含加密密錄的使用者特定資訊。讓渡至 本申請案之受讓人的以序號〇9/933,972及1〇/233,188申請的 題爲 Method and APparatus for Security in a Data pr〇cessing
System的兩個專利申請案詳細描述了用於加密通信的各種 貫施例,其以引用的方式倂入本文中。UIM 499與特定使用 者相關聯,並主要用來驗證一倂入有收發器5〇〇的行動台是 否向使用者提供特權(例如存取行動電話網路)的資格。因 此,使用者與該UIM 499相關聯,而非與行動台相關聯。同 一使用者可與多個UIM 499相關聯。 該廣播服務面臨判定如何將密鑰分配至簽署的使用者的 問題。爲在一特定時間解密該廣播内容,行動台必須知道 在s础子網路中有效的當前解密密鑰。爲避免服務偷竊行 爲(theft-0f-service),應頻繁地(例如每分鐘)改變該解密密 鑰。該等解密密鑰被稱爲短期密鑰(SK)。SK被用來在短時 間内解φ廣播内容。該sk係源自於一可儲存於該UIM中的 廣播存取密鑰(Broadcast Access Key)。可將由一廣播控制 器所控制的子網路清單連同廣播存取密鑰一起儲存於該 UIM中。行動台可需要自該廣播控制器於該組廣播參數中 k得歧廣播存取岔输。垓UIM接收一用於當前子網路的識
0 \90\90450 D0C -19- 別符連同一計算SK的請求。 在當前子網路中是否有效。 路中無效,則該TITM路技_ 該UIM可檢查該廣播存取密鑰
性描述了各種說明性組件、 電腦軟體或二者之組合。爲了清 可互換性,上文大體上就其功能 、區塊、模組、電路以及步驟。 此功此性疋被實施爲硬體或是被實施爲軟體取決於特定的 應用及強加於整個系統上的設計制約。熟練的技工可爲每 一特定應用以不同的方式來實施所描述的功能性,但是該 種實轭决策不應被解釋爲導致脫離本發明之範圍。可藉由 通用處理器、數位訊號處理器(DSP)、特殊應用積體電路 (ASIC)、現%可程式化閘極陣列(FPGA)或其它可程式化邏 輯Λ備離放閘極或電晶體邏輯、離散硬體組件或經設計 以執行本文所描述之功能的其任何組合,來實施或執行結 合本文所揭不的實施例而描述的各種說明性邏輯區塊、模 組以及電路。通用處理器可爲微處理器,但在替代實施例 中,該處理器可爲任何習知處理器、控制器、微控制器或 狀L、械亦可將處理器實施爲計算設備之組合,例如DSP 與一彳政處理器、複數個微處理器、與DSP核心相結合之一 個或多個微處理器或任何其它該種組態的組合。 結合本文所揭示的實施例而描述的方法及算法之步驟可
0\90\90450.DOC -20- 200421755
的軟體模組中或一組 、快閃記憶體、ROM 直接實施於硬體中及由處理器所執行 合中。軟體模組可存在於RAM記憶體 記憶體、EPROM記憶體、EEPR0M記憶體、暫存器、硬碟、 抽取式碟片、CD-ROM或此項技術中已知的任何其它形式 的儲存媒體巾。將-例示㈣存媒料接至處判,使得 該處理器可自該儲存媒體讀取資訊並將資訊寫人該儲存媒 體。在替代實施例中,該儲存媒體可與該處理器成爲一整 體。該處理器與該儲存媒體可存在於ASIC中。該asic可存
在於使用者終端機中。在替代實施例中,該處理器與該儲 存媒體可作爲離散組件而存在於使用者終端機中。
提供上述對於較佳實施例的描述,以使任何熟習此項技 術者犯夠製造或使用本發明。熟習此項技術者將容易瞭解 對該等實施例的各種修改,且在不使用發明性技能 (inventive faculty)的情況下,可將本文已界定的一般原理 (generic principle)施用至其它實施例。因此,本發明並不 意欲限於本文所展示之該等實施例,而是符合與本文所揭 示之原理及新穎特點一致的最大範疇。 【圖式簡單說明】 當結合該等圖式考慮時,自陳述於上文的詳細描述,吾 人將更明瞭本發明之特點、目的及優勢,貫穿該等圖式, 相同的參考符號一致地識別,且其中·· 圖1描繪了根據本發明各種態樣之能夠提供廣播服務之 通信系統; 圖2描繪了根據本發明各種態樣之各種步驟之流程圖,該
0 \90\90450 DOC -21 - 200421755 =驟可用於獲得及更新行動台之㈣參“心廣_ 圖3插繪了能夠根據本發明 服務之傳輪器; 圖4描繪了能夠根據本發明 服務之接收器; 圖5描繪了能夠根據本發明 服務之收發器系統;及 圖6描繪了用於廣播服務之 器之至少一種組態。 【圖式代表符號說明】 之各種態樣運/ 邊订以用於廣播 之各種態樣運行以用於廣播 之各種悲樣運行以用於廣播 通信系統子網路及廣播控制 100 通信 系統 101、 160 基地 台 102、 103、 104 行動 台 105 資料 網路 106、 161 前向 鏈路訊號 107、 108、 109 反向 鏈路訊號 151、 152、 153 、 610 、 620 廣播控制器 199 回程傳輸 200 接收 器 204 隨機 存取記憶體 206 搜索 器單元 208 指狀元件 210 控制 糸統 O:\90\90450 DOC •22- 200421755 212 、 308 組合器 214 解碼器 252 多工器 270 流程圖 290 射頻/中頻系統 292 天線系統 300 傳輸器 301 調變器 303 資料速率及功率位準選擇器 304 天線 309 放大器 401 處理器 402 接收資料處理區塊 403 傳輸資料處理區塊 404 、 405 輸入 480 接收資料儲存區塊 499 使用者識別模組 500 收發器系統 600 通信糸統子網路組態 601 > 602 > 603 子網路 O:\90\90450.DOC -23 -
Claims (1)
- 拾、申請專利範圍·· 種用於提供廣播服務之方法,其包含: 自一第一基地台接收一第一廣播控制器識別; 自一第二基地台接收一第二廣播控制器識別,· 判疋α亥專第一及第二廣播控制器識別是否與一共同 組的廣播參數之使用相關聯。 2·如申請專利範圍第1項之方法,其進一步包含: 繼續使用該共同組的廣播參數。 3·如申請專利範圍第丨項之方法,其進一步包含: 當該等第-及第二廣播控制器識別與該組共同的廣 播參數之使用不相關聯時,請求傳輸—組新的廣播參 數。 4. 5. 6. 如申請專利範圍第3項之方法,其進_步包含 接收該組新的廣播參數。 如申請專利範圍第4項之方法,其進一步包含 使用。亥、、且新的廣播苓數以接收廣播服務。一種用於提供廣播服務之裝置,其包含··一接收器,其用於自 制器識別,及用於自一 裔識別; 一第一基地台接收一第一廣播控 第二基地台接收一第二廣播控制 ^寸-丨, /入不一 /只r田 別疋否與-共同組的廣播參數之使用相關聯。 ;申月專利祀圍第6項之裝置,其中該接收器繼續使用 该共同組廣播參數。 0 \90\90450.DOC 200421755 8.如申請專利範圍第6項之裝置,其進一步包含: 傳輸器’其用於當該等第一及第二廣播控制器識別 與遠共同組的廣播參數之使用不相關聯時,請求傳輸一 組新的廣播參數。 9·如申請專利範圍第8項之裝置,其中該接收器進一步用 於接收該組新的廣播參數。 10.如申請專利範圍第9項之裝置,其中該等控制器及接收 器進一步用於使用該組新的廣播參數以接收廣播服務。 U· 一種用於提供廣播服務之方法,其包含: 自一第一基地台接收廣播服務; 漫遊至一第二基地台之覆蓋區域中; 判疋σ亥等第一及第二基地台是否與一共同廣播控制 器識別相關聯,藉此判定該等第—及第二基地台是否與 一共同組的廣播參數之使用相關聯。 12·如申請專利範圍第丨丨項之方法,其進一步包含: 繼續使用該共同組的廣播參數。 13·如申請專利範圍第⑴員之方法,其進一步包含: 田β等第-及第二基地台與該共同組的廣播參數之 使用不相關聯時,請求傳輸一組新的廣播參數。 Μ·如申請專利範圍第13項之方法,其進—步包含: 接收該組新的廣播參數。 15·如申請專利範圍第14項之方法,其進一步包含. 使用該組新的廣播參數以接收廣播服務。 16.—種用於提供廣播服務之裝置,其包含. 0 \90\90450 DOC -2- 200421755 17. 18. 19. 20. 一接收器,其用於自一第一基地台接收廣播服務; 一控制器’其用於偵測該接收器進入一第二基地台之 覆蓋區域之漫遊; 該控制器進一步用於判定該等第一及第二基地台是 否與一共同廣播控制器識別相關聯,藉此判定該等第一 及第二基地台是否與一共同組的廣播參數之使用相關 聯。 如申請專利範圍第16項之裝置,其中該接收器繼續使用 該共同組的廣播參數。 如申請專利範圍第16項之裝置,其進一步包含: 一傳輸器,其用於當該等第一及第二基地台與該共同 組的廣播參數之使用不相關聯時,請求傳輸一組新的廣 播參數。 如申請專利範圍第18項之裝置,其中該接收器進一步用 於接收該組新的廣播參數。 如申請專利範圍第19項之裝置,其中該控制器及該接收 器進一步用於使用該組新的廣播參數以接收廣播服務。 O:\90\90450.DOC
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-
2003
- 2003-01-02 US US10/335,626 patent/US7599655B2/en not_active Expired - Fee Related
- 2003-12-23 RU RU2005124509/09A patent/RU2355119C2/ru not_active IP Right Cessation
- 2003-12-23 CN CNB2003801100952A patent/CN100574471C/zh not_active Expired - Fee Related
- 2003-12-23 WO PCT/US2003/041311 patent/WO2004062304A2/en active Application Filing
- 2003-12-23 UA UAA200507683A patent/UA89161C2/ru unknown
- 2003-12-23 JP JP2004565720A patent/JP4494219B2/ja not_active Expired - Lifetime
- 2003-12-23 EP EP03800207A patent/EP1584205A2/en not_active Withdrawn
- 2003-12-23 BR BR0317921-4A patent/BR0317921A/pt not_active IP Right Cessation
- 2003-12-23 CN CN200910209300XA patent/CN101692719B/zh not_active Expired - Fee Related
- 2003-12-23 MX MXPA05007264A patent/MXPA05007264A/es active IP Right Grant
- 2003-12-23 CA CA002511508A patent/CA2511508A1/en not_active Abandoned
- 2003-12-23 AU AU2003299940A patent/AU2003299940B2/en not_active Ceased
- 2003-12-31 TW TW092137662A patent/TW200421755A/zh unknown
-
2005
- 2005-06-29 IL IL169470A patent/IL169470A0/en unknown
-
2007
- 2007-04-17 HK HK07104009.4A patent/HK1097155A1/xx not_active IP Right Cessation
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2009
- 2009-08-28 US US12/550,129 patent/US8971790B2/en active Active
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2010
- 2010-01-26 JP JP2010014030A patent/JP5080595B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
BR0317921A (pt) | 2005-11-29 |
JP4494219B2 (ja) | 2010-06-30 |
RU2005124509A (ru) | 2007-02-10 |
US8971790B2 (en) | 2015-03-03 |
UA89161C2 (ru) | 2010-01-11 |
HK1097155A1 (en) | 2007-06-15 |
RU2355119C2 (ru) | 2009-05-10 |
AU2003299940B2 (en) | 2009-06-04 |
MXPA05007264A (es) | 2005-11-04 |
JP2006521709A (ja) | 2006-09-21 |
CN100574471C (zh) | 2009-12-23 |
AU2003299940A1 (en) | 2004-07-29 |
JP2010148136A (ja) | 2010-07-01 |
CA2511508A1 (en) | 2004-07-22 |
US20100048206A1 (en) | 2010-02-25 |
CN1902958A (zh) | 2007-01-24 |
IL169470A0 (en) | 2007-07-04 |
WO2004062304A2 (en) | 2004-07-22 |
WO2004062304A3 (en) | 2005-04-28 |
JP5080595B2 (ja) | 2012-11-21 |
US20040132402A1 (en) | 2004-07-08 |
CN101692719A (zh) | 2010-04-07 |
CN101692719B (zh) | 2013-09-11 |
EP1584205A2 (en) | 2005-10-12 |
US7599655B2 (en) | 2009-10-06 |
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