TWI535307B - 以網際網路協定(ip)多媒體子系統(ims)爲基礎之點對點(p2p)內容分配技術 - Google Patents
以網際網路協定(ip)多媒體子系統(ims)爲基礎之點對點(p2p)內容分配技術 Download PDFInfo
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Environmental & Geological Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Computer And Data Communications (AREA)
Description
本發明係有關於以網際網路協定(IP)多媒體子系統(IMS)為基礎之點對點(P2P)內容分配技術。
無線行動通訊技術使用各種標準及協定來在節點(例如,傳輸台)與無線裝置(例如,行動裝置)之間傳輸資料。一些無線裝置在下行鏈路(DL)傳輸中使用正交分頻多重存取(OFDMA)且在上行鏈路(UL)傳輸中使用單載波分頻多重存取(SC-FDMA)來通訊。將正交分頻多工(OFDM)使用於信號傳輸之標準及協定包括第三代合作夥伴計畫(3GPP)長期演進(LTE)、通常被工業小組稱為WiMAX(全球互通微波存取)之美國電機暨電子工程師學會(IEEE)802.16標準(例如,802.16e、802.16m)及通常被工業小組稱為WiFi之IEEE 802.11標準。
在3GPP無線電存取網路(RAN)LTE系統中,節點可為演進統一陸地無線電存取網路(E-UTRAN)節點B(通常亦表示為演進節點B、增強節點B、eNodeB或eNB)及無線電
網路控制器(RNC)之組合,該組合與被稱為使用者設備(UE)之無線裝置通訊。下行鏈路(DL)傳輸可為自節點(例如,eNodeB)至無線裝置(例如,UE)之通訊,且上行鏈路(UL)傳輸可為自無線裝置至節點之通訊。
無線裝置可用來使用各種協定接收網際網路視訊之多媒體遞送,該等協定諸如超文本傳送協定(HTTP)串流。用以提供視訊串流之以HTTP為基礎之遞送之協定可包括HTTP動態適應性串流(DASH)。
依據本發明之一實施例,係特地提出一種經由一P2P應用伺服器提供點對點(P2P)內容分配之方法,該方法包含下列步驟:經由一網際網路協定(IP)多媒體子系統(IMS)核心網路(IM CN)子系統自一第一使用者設備(UE)接收具有一對話描述協定(SDP)要約之一對話發起協定(SIP)邀請;經由該IM CN子系統將具有該SDP要約之該SIP邀請轉送至一第二UE;經由該IM CN子系統自該第二UE接收具有一SDP之一SIP確認;以及經由該IM CN子系統將具有該SDP之該SIP確認轉送至該第一UE。
100‧‧‧以IMS為基礎之P2P內容分配系統/IMS
102‧‧‧IMS CN子系統
104‧‧‧入口網站
106‧‧‧網路伺服器
108‧‧‧內容快取記憶體伺服器
110‧‧‧IMS組配之UE/使用者設備/UE
112‧‧‧UE1
114‧‧‧UE2
120‧‧‧IMS核心網路子系統/IM CN子系統
122‧‧‧IM CN子系統
124‧‧‧IM CN子系統
130‧‧‧P2P應用伺服器
132‧‧‧SCF
140‧‧‧BMSC.UPF/BMSC/FLUTE伺服器
142‧‧‧廣播多播服務中心(BM-SC)
144‧‧‧MBMS遞送功能
146‧‧‧內容提供者/多播廣播來源
150‧‧‧HTTP/SIP配接器
160‧‧‧HTTP伺服器
170‧‧‧策略與計費規則功能(PCRF)
180‧‧‧RAN及分封交換(PS)核心網路
190‧‧‧服務選擇功能(SSF)
210‧‧‧音訊/視訊輸入
212‧‧‧網站/媒體伺服器
214‧‧‧媒體編碼器
216‧‧‧媒體分段器
218‧‧‧網站伺服器
220‧‧‧客戶端
222‧‧‧網站瀏覽器
224‧‧‧媒體解碼器及/或播放器
232~236、252、254、510、610~640‧‧‧方塊
240‧‧‧HTTP GET/HTTP GET訊息
242‧‧‧MPD
244‧‧‧HTTP GET URL(片斷1請求)
246‧‧‧片斷1
248‧‧‧HTTP GET URL(片斷i請求)
250‧‧‧片斷i
302‧‧‧具有SDP要約之SIP INVITE訊息
304‧‧‧SIP INVITE
306‧‧‧具有SDP要約之SIP INVITE訊息
308‧‧‧SIP INVITE
310‧‧‧具有SDP之SIP 200 OK訊息
312‧‧‧SIP 200 OK
314‧‧‧具有SDP之SIP 200 OK
316‧‧‧SIP 200 OK
318‧‧‧P2P內容遞送
402‧‧‧媒體呈現描述(MPD)元資料檔案/媒體呈現描述(MPD)元資料
404‧‧‧週期
406‧‧‧適應集
408‧‧‧表示
410‧‧‧分段資訊
412‧‧‧初始化資訊
414‧‧‧實際媒體分段資料
500‧‧‧功能性
600‧‧‧方法
710‧‧‧節點
720‧‧‧使用者設備/UE
722‧‧‧處理器
724‧‧‧收發機
780‧‧‧IMS核心、EPC、PS核心及/或RAN
本發明之特徵及優點將自以下結合隨附圖式進行之詳細描述顯而易見,該等圖式一起以實例之方式示出本發明之特徵;且在圖式中:圖1示出根據一實例之以網際網路協定(IP)多媒體子系統(IMS)為基礎之點對點(P2P)內容分配系統的方塊圖;
圖2示出根據一實例之用於超文本傳送協定(HTTP)動態適應性串流(DASH)之客戶端及伺服器處的方塊圖;圖3示出根據一實例之媒體呈現描述(MPD)元資料檔案組態的方塊圖;圖4示出根據一實例之用於多媒體廣播多播服務(MBMS)使用者服務之廣播多播服務中心(BMSC)使用者平面子功能(UPF)(BMSC.UPF)的方塊圖;圖5示出根據一實例之具有點對點(P2P)應用伺服器之以網際網路協定(IP)多媒體子系統(IMS)為基礎之分封交換串流服務(PSS)及多媒體廣播多播服務(MBMS)功能架構的方塊圖;圖6示出根據一實例之用於建立以網際網路協定(IP)多媒體子系統(IMS)為基礎之點對點(P2P)內容分配的以對話發起協定(SIP)為基礎之對話控制機制的訊息流程圖之實例;圖7描繪根據一實例之可操作以用於點對點(P2P)內容分配之服務控制功能(SCF)模組之電腦電路之功能性;圖8描繪根據一實例之用於經由P2P應用伺服器提供點對點(P2P)內容分配之方法的流程圖;圖9示出根據一實例之點對點(P2P)應用伺服器、節點(例如,eNB)及使用者設備(UE)的圖表;以及圖10示出根據一實例之無線裝置(例如,UE)的圖表。
現將參考所示之示範性實施例,且本文將使用特定的語言來描述該等示範性實施例。然而,將理解,並非
藉此意欲限制本發明之範疇。
在揭示且描述本發明之前,將理解,本發明不限於本文揭示之特定結構、處理步驟或材料,而是擴展至如相關技術之一般技術者將認可之該等特定結構、處理步驟或材料之等效物。亦應理解,本文使用之術語學僅用於描述特定實例之目的且不欲為限制的。不同圖式中之相同參考數字表示相同元件。提供於流程圖及處理中之數字係提供來用於示出步驟及操作中之清晰性但未必指示特定順序或序列。
以下提供技術實施例之最初概述,稍後接著詳細地描述特定技術實施例。此最初摘要意欲幫助讀者更快速地理解技術,但其不欲識別技術之關鍵特徵或本質特徵,其亦不欲限制所請求標的之範疇。
超文本傳送協定(HTTP)串流可用作網際網路視訊之多媒體遞送之形式。以HTTP為基礎之遞送可由於包括傳輸控制協定(TCP)/網際網路協定(IP)之HTTP協定及HTTP的下層協定兩者之廣泛採用而提供可靠性及部署簡單性。以HTTP為基礎之遞送可藉由避免網路位址轉譯(NAT)及防火牆遍歷問題來賦能於容易且不費力的串流服務。以HTTP為基礎之遞送或串流亦可提供使用標準HTTP伺服器及快取記憶體而非專門化串流伺服器之能力。以HTTP為基
礎之遞送可由於伺服器端上之最少的狀態資訊或減少的狀態資訊而提供可擴縮性。
HTTP動態適應性串流(DASH)為可將多媒體檔案分割成一或多個分段且使用HTTP遞送至客戶端之多媒體串流技術。DASH可為標準化HTTP串流協定。在一實例中,DASH可為以3GPP技術規範(TS)26.247 V11.1.0(2012-12)標準化。DASH技術亦已由其他組織標準化,該等其他組織諸如動態影像專家群(MPEG)、開放IPTV論壇(OIPF)及混合廣播寬頻TV(HbbTV)。
DASH客戶端可藉由經由一系列HTTP請求-回應交易下載分段來接收多媒體。當可利用的頻寬變化時,DASH可提供在媒體內容之不同表示(包括位元率或編碼類型)之間動態地交換之能力。因此,DASH可允許對改變網路及無線鏈路條件、使用者偏好及裝置能力快速適應,該等裝置能力諸如顯示器解析度、所使用之中央處理單元(CPU)之類型或可利用的記憶體資源。DASH之動態適應可為使用者提供較佳的經驗品質(QoE),具有較短的起動延遲及較少的再緩沖事件。
網際網路協定(IP)多媒體子系統(IMS)或IP多媒體核心網路子系統(IM CN)為用於遞送諸如DASH內容之IP多媒體服務之3GPP中之架構框架。IP多媒體核心網路子系統可為由標準化介面鏈接之不同核心網路及存取網路功能之集合,分組在一起之該等標準化介面可形成一個IMS行政管理網路。
點對點(P2P)通訊之使用可在將串流媒體遞送至行動裝置中提供顯著的改良。隨著媒體內容消費之迅速增長,用以提供串流服務之媒體伺服器之數目可與使用者之數目幾乎呈線性地增加。另外,集中式串流媒體伺服器對骨幹IP網路之頻寬具有相當大的需求。愈來愈多的邊緣伺服器可佈署成接近於UE,以提供所要的服務品質(QoS)及/或經驗品質(QoE)。邊緣伺服器可處置來自局部伺服的UE之請求以及自相鄰邊緣伺服器傳送之請求。
可在邊緣伺服器與UE之間使用點對點技術,以減少需要佈署成接近於UE之邊緣伺服器之數目。若行動裝置(例如,UE)之能力容許,則UE可提供用於串流資料之備用上行鏈路頻寬及儲存空間。串流資料可經上載至其他所請求目的地。內容可以分段方式傳輸,且訊務中之大多數可遍佈網路之邊緣,此狀況可幫助減少集中式伺服器之儲存及頻寬需求。因此,使用P2P技術可改良系統能力,此舉可增加充當P2P伺服器之邊緣伺服器及/或UE之數目。
在一實施例中,IMS可包括固定及行動收斂核心網路以提供多媒體服務。另外,IMS可提供用於使用者鑑定、註冊、服務探索及多媒體對話控制之基礎結構。圖1提供以IMS為基礎之P2P內容分配系統100之概觀。在一實施例中,IMS組配之UE 110可經由固定或行動存取網路向IMS CN子系統102發起內容分配。可將IMS UE重新導向至入口網站104,該入口網站可提供內容索引、瀏覽及搜尋功能性。內容可儲存在諸如用於UE之網路伺服器106之內容伺
服器上。內容快取記憶體伺服器108可佈署成接近於使用者以加速內容分配。
使用者設定檔可儲存在IMS 100中,且諸如UE 110之終端機之能力(亦即處理能力、螢幕大小、3GPP能力)可與使用者的偏好一起儲存在P2P應用服務(例如,P2P應用伺服器)中。UE能力可用來判定UE或在UE上操作之客戶端是否能夠接收所請求內容。內容控制可用來控制如何將內容分配於網路中及UE可在何處獲取所請求內容。
以IMS為基礎之點對點內容分配能力可為可應用於第三代合作夥伴計劃(3GPP)的以IMS為基礎之分封交換串流服務(PSS)(如3GPP技術規範(TS)26.234 V11.1.0(2012-09)中所述)以及多媒體廣播及多播服務(MBMS)(如3GPP技術規範(TS)26.346 V11.3.0(2012-12)中所述)中之功能性,且此類以IMS為基礎之串流及下載服務功能性可應用於以整合型多媒體子系統(IMS)為基礎之PSS以及多媒體廣播及多播服務(MBMS)(縮寫為IMS_PSS_MBMS,如3GPP技術規範(TS)26.237 V11.0.0(2012-06)中所述)。一些以IMS為基礎之點對點內容分配服務可包括內容隨選服務、即時串流服務或至大量線上使用者之有效軟體分配。
DASH內容可經由以IMS為基礎之點對點內容分配服務遞送。在DASH中,媒體呈現描述(MPD)元資料檔案可提供關於儲存在伺服器中之媒體內容表示之結構及不同版本的資訊,該等媒體內容表示之不同版本包括不同位元率、框率、解析度或編解碼器類型。另外,DASH亦可指定
分段格式。MPD元資料檔案可含有關於用於媒體播放器之初始化及媒體分段之資訊(例如,媒體播放器可考慮初始化分段以確定容器格式及媒體定時資訊),以確保分段至媒體呈現時間線中之映射以用於與其他表示之交換及同步呈現。基於描述分段在形成媒體呈現中之關係的此MPD元資料資訊,客戶端(或客戶端裝置)可使用HTTP GET或部分GET方法來請求分段。客戶端可完全控制串流對話。例如,客戶端可管理分段序列之工作時間請求及平滑播出(playout),且潛在地調整位元率或其他屬性(例如,以對裝置狀態或使用者偏好之變化作出反應)。
在DASH中,媒體呈現描述(MPD)元資料檔案可提供關於儲存在網站及/或媒體伺服器212中之媒體內容表示之結構及不同版本的資訊,如圖2中所示。媒體內容表示之不同版本可包括不同位元率、框率、解析度、編解碼器類型或其他類似類型之資訊。另外,DASH亦可指定分段格式,該等分段格式可含有關於用於媒體引擎之初始化及媒體分段之資訊,以確保分段至媒體呈現時間線中之映射以用於與其他表示之交換及同步呈現。基於描述分段之關係及分段如何形成媒體呈現的MPD元資料資訊,客戶端220可使用HTTP GET 240訊息或一系列部分GET訊息來請求分段。客戶端可控制串流對話,諸如,管理分段序列之工作時間請求及平滑播出或潛在地調整位元率或其他屬性,以對裝置狀態或使用者偏好之變化作出反應。
圖2示出以DASH為基礎之串流框架。網站/媒體
伺服器212中之媒體編碼器214可將來自音訊/視訊輸入210之輸入媒體編碼成用於儲存或串流之格式。媒體分段器216可用來將輸入媒體分裂成一系列片斷或塊232,該系列片斷或塊可經提供至網站伺服器218。客戶端220可使用發送至網站伺服器(例如,HTTP伺服器)之HTTP GET訊息來請求塊中之新資料234。
例如,客戶端220之網站瀏覽器222可使用HTTP GET訊息240來請求多媒體內容。網站伺服器218可向客戶端提供用於多媒體內容之MPD 242。MPD可用來傳達每一分段之索引及分段的對應位置,該索引及該等分段的對應位置如相關聯元資料資訊中所示252。網站瀏覽器可根據MPD 242逐分段地自伺服器拉取媒體,如236中所示。例如,網站瀏覽器可使用HTTP GET URL(片斷1請求)244來請求第一片斷。全球資源定位器(URL)或環球資源定位器可用來告訴網站伺服器客戶端將請求哪一分段254。網站伺服器可提供第一片斷(亦即,片斷1 246)。對於後續片斷,網站瀏覽器可使用HTTP GET URL(片斷i請求)248來請求片斷i,其中i為片斷之整數索引。因此,網站伺服器可提供片斷i 250。可經由媒體解碼器及/或播放器224將片斷呈現至客戶端。
如圖3中所示,DASH可指定用於媒體呈現描述(MPD)元資料檔案402之不同格式,該媒體呈現描述(MPD)元資料檔案提供關於儲存在伺服器中之媒體內容表示之結構及不同版本,以及分段格式(或片斷格式)的資訊。在
DASH中,媒體呈現描述(MPD)元資料402可提供關於儲存在網站及/或媒體伺服器中之媒體內容表示之結構及不同版本的資訊。在圖3中所示之實例中,MPD元資料可暫時分為具有預定長度(諸如此實例中之60秒)之週期404。每一週期可包括多個適應集406。每一適應集可提供關於一或多個媒體組件之資訊與多個編碼替選方案。例如,此實例中之適應集0可包括可包括各種不同地編碼的音訊替選方案,諸如不同位元率、單聲道、單體聲、環場音效等。除經由週期ID為多媒體表示提供不同的品質音訊之外,適應集亦可包括使用不同語言之音訊。適應集中提供之不同的替選方案可被稱為表示408。
在圖3中,適應集1係示出為以諸如5兆位元每秒(Mbps)、2Mbps、500千位元每秒(kbps)之不同位元率或竅門模式(trick mode)提供視訊。竅門模式可用於尋找、快速進帶、倒帶或多媒體串流檔案中之位置的其他變化。另外,視訊亦可為以不同格式可利用的,該等不同格式諸如二維(2D)視訊或三維(3D)視訊,或直視或橫擺導向之視訊。每一表示408可包括分段資訊410。分段資訊可包括初始化資訊412及實際媒體分段資料414。在此實例中,將MPEG-4(MP4)檔案自伺服器串流至行動裝置。雖然在此實例中使用MP4,但是可使用各種不同編解碼器。編解碼器為能夠編碼或解碼數位資料串流或信號之裝置、應用程式、元件或電腦程式。
可將適應集中之多媒體進一步分為較小分段。在
圖3之實例中,可將適應集1之60秒視訊分段進一步分為各自15秒之四個子分段414。此等實例不欲為限制的。適應集及每一媒體分段或子分段之實際長度取決於媒體之類型、系統要求、潛在類型之干擾等。實際媒體分段或子分段可具有小於小於一秒至若干分鐘長之長度。
可使用多媒體廣播多播服務(MBMS)來分配DASH內容。MBMS為用於蜂巢式網路之單點對多點介面規格,該單點對多點介面規格可提供廣播及多播服務既在細胞內又在核心網路內之有效遞送。增強式多媒體廣播及多播服務(eMBMS)可為MBMS之LTE版本,該LTE版本可佈署於LTE網路上。LTE的eMBMS可提供用於使用可利用的無線電資源之子集來將相同的內容資訊發送至細胞中之所有使用者(亦即,廣播)或發送至細胞中之使用者之給定集合(用戶)(亦即,多播)的傳送特徵,而剩餘可利用的無線電資源可用來支援朝向特定使用者之傳輸(例如,單播服務)。
eMBMS之佈署可增強核心MBMS使用者服務特徵之效能及可用性。MBMS下載遞送可為用於卸載以HTTP為基礎之單播下載遞送之服務替選方案。益處可包括賦能於對非即時服務類型之支援、互補MBMS串流服務之內容之提供及利用裝置(例如,伺服器)上之增加的儲存容量。亦可用於使用HTTP單播傳送之DASH分段格式可為遞送環境為單播或多播之不可知論者。MBMS使用者服務規格(例如,3GPP TS 26.346)可允許DASH格式化內容將以單向傳送檔案(FLUTE)協定使用MBMS下載遞送予以傳輸。
FLUTE可為用於檔案經由網際網路之單向遞送之協定,該協定可尤其適合於多播網路。FLUTE可在異步分層編碼(ALC)上構建經設計以用於大規模可縮放多播分配之基礎協定。FLUTE可提供分層編碼傳送(LCT)構建塊之例示。ALC協定可組合LCT構建塊、擁擠控制(CC)構建塊及向前錯誤更正(FEC)構建塊,以提供擁擠控制可靠的異步遞送。LCT可提供用於可靠的內容遞送及串流遞送協定之傳送層支援。串流資料或下載可囊封在即時傳送協定(RTP)中且在經由MBMS載送通道遞送時使用FLUTE協定予以傳送。RTP可使用於涉及串流媒體之通訊系統及娛樂系統中,該等系統諸如電話學、視訊電傳會議應用程式、電視服務及以網站為基礎之按鍵通話特徵。
圖4描繪廣播多播服務中心(BM-SC)142之功能架構及操作,該廣播多播服務中心可主管用於DASH格式化內容遞送之以MBMS為基礎之使用者服務。圖4示出UE與BMSC之間的BMSC(BM-SC)子功能架構及相關聯介面。BM-SC可與內容提供者/多播廣播來源146通訊且/或控制內容提供者/多播廣播來源146。BM-SC可提供各種功能,該等功能包括交互型公告功能、使用者服務探索及/或公告、對話及傳輸功能及金鑰管理功能。對話及傳輸功能可提供MBMS遞送功能144及相關聯遞送功能,且金鑰管理功能可提供金鑰請求功能及金鑰分配功能。BM-SC可經由HTTP(http)、使用者資料報協定(UDP)、即時傳送協定(RTP)、FLUTE及/或多媒體網際網路金鑰(MIKEY)協定與
UE通訊。BM-SC可經由SGmb介面與MBMS閘道器(MBMS-GW)通訊,且BM-SC可經由Gmb介面與閘道器通用封包無線電服務(GPRS)支援節點(GGSN)通訊。
本文所述之技術(例如,P2P應用伺服器、對話控制功能(SCF)、IM CN子系統、客戶端裝置或終端機、使用者設備(UE)、方法、電腦電路系統、系統、機構、處理或程序)可支援經由IMS網路之點對點(P2P)內容分配。P2P內容遞送可經由各種串流及下載協定以及格式予以執行,該等協定及格式包括:自一個UE至另一UE之(例如,3GPP檔案格式(3GP)檔案之)以HTTP為基礎之下載遞送;在發送UE具有含可能不同的表示(例如,品質等級、位元率、編解碼器等)之DASH格式化內容時的情況下之以HTTP為基礎之適應性串流(例如,使用DASH);以及在自發送UE至多個接收UE之遞送的情況下之以FLUTE為基礎之IP多播。對於使用者產生之內容(UGC)之即時以HTTP為基礎之適應性串流(例如,使用DASH),UE可適應性地擷取且/或編碼DASH格式之內容,以有助於確保由接收UE進行之可靠遞送。對於使用者產生之內容(UGC)之即時以FLUTE為基礎之IP串流,UE可適應性地擷取且/或編碼內容,以有助於確保由接收UE進行之可靠遞送。
在一實例中,可使用P2P應用伺服器130將P2P內容分配實行於以IMS為基礎之分封交換串流服務(PSS)及MBMS使用者服務功能架構中,如圖5中所示。稍後提供P2P應用伺服器功能性之更大細節。在另一實例中,P2P應用伺
服器功能性可主管在對話控制功能(SCF)中。SCF可提供服務邏輯及用以支援服務邏輯之執行之功能。例如,SCF可在對話發起及對話修改期間提供服務授權,此舉可包括檢查PSS及MBMS使用者的服務預約以便允許或拒絕對服務之存取。SCF可選擇相關PSS及MBMS媒體功能。對於以HTTP為基礎之遞送,SCF可充當代理伺服器或背對背使用者代理(B2BUA)。對於MBMS,SCF可充當終端使用者代理(UA)。
各種功能塊或模組可用於以IMS為基礎之點對點內容分配服務。例如,IMS核心網路子系統(IM CN子系統)120可支援使用者註冊及鑑別、可動性及漫遊、多媒體對話之控制、服務品質(QoS)控制、策略控制、計費及與電路交換網路之交互工作。IM CN子系統之功能可進一步描述於3GPP TS 23.228 V11.7.0(2012-12)中。
使用者設備(UE)110可含有同屬靴帶式牽引架構(GBA)、IMS、PSS及/或MBMS客戶端,上述各者可執行服務探索及選擇,處置服務發起、修改及終止且/或接收內容且向使用者呈現內容。在一實例中,UE 110亦可主管HTTP/SIP配接器150、HTTP伺服器160及BMSC.UPF 140。
HTTP/SIP配接器150功能可使對話發起協定(SIP)對話與HTTP進入請求相互關聯。HTTP/SIP配接器可與IM CN子系統120、SCF 132及HTTP伺服器160介接。HTTP伺服器可提供用於以HTTP為基礎之遞送之DASH格式化內容。HTTP伺服器之功能可進一步描述於3GPP TS 26.247中。
BMSC.UPF 140廣播多播服務中心(BMSC)使用
者平面子功能(UPF)。BMSC.UPF可提供用於MBMS下載之DASH格式化內容。BMSC.UPF(或BM-SC.UPF或BM-SC(圖4之142))可與內容提供者/多播廣播來源(圖4之146)通訊且/或控制內容提供者/多播廣播來源。BMSC或BMSC.UPF之功能可進一步描述於3GPP TS 26.246 V11.3.0(2012-12)中。
策略與計費規則功能(PCRF)170可控制RAN及分封交換(PS)核心網路180中之計費及資源建立。PCRF之功能可進一步描述於3GPP TS 23.203 V11.8.0(2012-12)中。
服務選擇功能(SSF)190可提供可利用的PSS(包括以HTTP為基礎之DASH)及MBMS使用者服務以及相關使用者服務描述資訊之清單。SSF模組可經個性化至客戶端的識別。
P2P IMS服務可使用以IMS為基礎之PSS及MBMS使用者服務功能架構。例如,發送UE可主管P2P伺服器功能(例如,支援HTTP、HTTP/SIP配接器及BMSC/FLUTE伺服器功能)中之一些。P2P IMS服務可以集中式方式管理UGC訊務。例如,P2P應用伺服器130(亦即,在UE外部)可執行HTTP伺服器160、HTTP/SIP配接器150及BMSC/FLUTE伺服器140功能,其中發送UE可將內容及/或相關聯元資料(例如,用於MBMS之DASH或使用者服務描述(USD)之媒體呈現描述(MPD))上載至P2P應用伺服器。例如,UE 110可包括HTTP伺服器/客戶端、SIP客戶端及HTTP/SIP配接器,該HTTP/SIP配接器在HTTP伺服器/客戶端與SIP客戶端之間協調。P2P應用伺服器因此可執行轉
碼、重新封包(例如,DASH格式化)、分段、以FLUTE為基礎之遞送等。
在另一組態中,P2P應用伺服器130可充當用於在兩個UE之間建立點對點內容遞送對話及協商P2P對話參數之對話發起協定(SIP)背對背使用者代理(B2BUA)。例如,P2P應用伺服器可接收且處理對於以HTTP為基礎之下載遞送、以HTTP為基礎之適應性串流(例如,媒體呈現描述或MPD)及以FLUTE為基礎之IP多播(例如,MBMS使用者服務描述或USD)所涉及之元資料。P2P應用伺服器可管理且控制以IMS為基礎之P2P對話(例如,藉由經由對話描述協定(SDP)進行之對話管理),且亦產生用於P2P內容遞送之新元資料(例如,經由對MPD或USD之修改)。
在另一實例中,P2P應用伺服器130可主管P2P內容分配服務,且在對話發起及對話修改期間執行服務授權及點(peer)選擇,此舉包括使用者的P2P服務預約之驗證以便允許或拒絕對內容分配服務之存取。在另一組態中,以IMS為基礎之P2P共享可涉及元資料(例如,用於DASH之MPD或用於MBMS之USD)而非實際媒體之共享。例如,在元資料之接收之後,接收UE可與主管對應的服務(例如,以DASH為基礎之串流或以MBMS為基礎之遞送服務)之伺服器建立對話,以擷取對應的媒體內容。僅元資料之P2P共享可為可適用於主管在網路中之內容而非使用者產生之內容(UGC)的。對於此實例,P2P應用伺服器之角色可使用以SIP為基礎之對話控制機制來在兩個UE之間建立相關元資料
之P2P共享。
各種處理可用於P2P共享,諸如以IMS為基礎之P2P串流及/或內容及/或服務元資料共享。圖6示出用於使用以IMS為基礎之PSS及MBMS使用者服務功能架構來建立以IMS為基礎之P2P內容分配的SIP為基礎之對話控制機制。UE1 112可經由IM CN子系統122與P2P應用伺服器130(或SCF 132)通訊,且UE2 114可經由IM CN子系統124與P2P應用伺服器(或SCF)通訊。UE1可主管HTTP客戶端、SIP客戶端及HTTP/SIP配接器。UE2可主管HTTP伺服器、SIP客戶端及HTTP/SIP配接器。SCF可充當SIP B2BUA(例如,與UE1及UE2中之SIP客戶端通訊),以在UE1與UE2之間建立P2P內容遞送對話且協商用於P2P對話之SDP。SCF亦可驗證用於P2P服務之使用者預約及對所請求內容之使用者權力。
例如,UE1 112可藉由將具有SDP要約之SIP INVITE訊息302發送至IM CN子系統122來發起與UE2 114之SIP P2P對話,該發送可將SIP INVITE 304轉送至SCF 132。SCF可將具有SDP要約之SIP INVITE訊息306發送至IM CN子系統124,此舉可將SIP INVITE 308轉送至UE2。UE2可以具有SDP之SIP 200 OK訊息310回應IM CN子系統124,此舉可將SIP 200 OK 312轉送至SCF。SCF可將具有SDP之SIP 200 OK 314發送至IM CN子系統122,此舉可將SIP 200 OK 316轉送至UE1。在SDP之接收,UE1可自UE2接收P2P內容遞送318。
對於以DASH為基礎之P2P串流,UE1最初可建立SIP對話(例如,SIP INVITE或RE-INVITE)以自UE2擷取MPD(例如,經由SCF),且在MPD之成功接收之後,UE1可更新SIP對話且基於接收之MPD來協商用於DASH格式化內容之遞送之新SDP。在一實例中,UE1可使用類似於圖6中描繪之序列的信號來更新SIP對話,其中使用SIP RE-INVITE或SIP UPDATE訊息而非SIP INVITE。
對於以IMS為基礎之內容及/或服務元資料共享,點對點遞送可包括MPD之遞送(用於至UE1之DASH內容遞送)或USD之遞送(用於至UE1之MBMS服務遞送)。在此狀況下,UE2可與UE1共享DASH/MBMS服務之細節,使得UE1可存取與UE2相同的服務及/或內容。
P2P IMS服務亦可用於以IMS為基礎之P2P多播串流。例如,UE1可主管以BM-SC為基礎之伺服器功能性及SIP客戶端。在UE1中包括BM-SC功能性可增加UE或家用閘道器之複雜性。UE2可主管MBMS客戶端及SIP客戶端。SCF可充當SIP B2BUA(例如,與UE1及UE2中之SIP客戶端通訊),以在UE1與UE2之間基於多播協定(例如,FLUTE及IP多播)建立P2P內容遞送對話,且協商用於P2P多播對話之SDP。SCF亦可驗證用於P2P服務之使用者預約及對所請求內容之使用者權力。SIP信號可類似於圖6中描繪之序列。經由IMS上之已建立MBMS對話(例如,經由FLUTE/IP),UE2可自UE1接收USD及相關聯媒體/資料內容。
另一實例提供可操作以用於點對點(P2P)內容分
配之服務控制功能(SCF)模組之電腦電路系統之功能性500,如圖7中之流程圖中所示。功能性可實行為方法,或功能性可執行為機器上之指令,其中指令包括於至少一電腦可讀媒體或一非暫時性機器可讀儲存媒體上。電腦電路系統可經組配來主管可操作以管理兩個使用者設備(UE)之間的網際網路協定(IP)多媒體子系統(IMS)內容分配之P2P應用伺服器,如方塊510中。
在一實例中,經組配來主管P2P應用伺服器之電腦電路系統可進一步經組配來:管理兩個UE之間的以超文本傳送協定為基礎之(以HTTP為基礎之)下載遞送;管理兩個UE之間的HTTP動態適應性串流(DASH)串流;或管理自發送UE至多個接收UE的以單向傳送檔案遞送為基礎之(以FLUTE為基礎之)網際網路協定(IP)多播。以HTTP為基礎之下載遞送可包括第三代合作夥伴計畫(3GPP)檔案格式(3GP)檔案。DASH串流可包括具有不同表示之媒體呈現描述(MPD)元資料檔案或DASH格式化內容。以FLUTE為基礎之IP多播可包括異步分層編碼(ALC)、分層編碼傳送(LCT)構建塊或使用者服務描述(USD)檔案。
在另一實例中,經組配來主管P2P應用伺服器之電腦電路系統可進一步經組配來:轉碼P2P內容;重新封包P2P內容;超文本傳送協定(HTTP)動態適應性串流格式化(DASH格式化)P2P內容;分段P2P內容;或提供P2P內容之以單向傳送檔案遞送為基礎之(以FLUTE為基礎之)遞送。經組配來主管P2P應用伺服器之電腦電路系統可進一步經組
配來:主管對話發起協定(SIP)背對背使用者代理(B2BUA);經由SIP B2BUA在兩個UE之間建立P2P內容遞送對話;經由SIP B2BUA在兩個UE之間協商P2P對話參數;經由對話描述協定(SDP)管理P2P內容遞送對話;或經由媒體呈現描述(MPD)元資料檔案或使用者服務描述(USD)檔案之修改產生用於P2P內容遞送之新元資料。
在另一組態中,經組配來主管P2P應用伺服器之電腦電路系統可進一步經組配來:主管P2P內容分配服務;在P2P對話發起及P2P對話修改期間執行服務授權及點選擇;檢驗用於P2P服務之使用者預約;或驗證對來自發送UE之所請求內容之使用者權力。經組配來主管P2P應用伺服器之電腦電路系統可進一步經組配來:在兩個UE之間共享內容元資料,其中內容元資料用於超文本傳送協定(HTTP)動態適應性串流(DASH)之媒體呈現描述(MPD)元資料檔案或用於多媒體廣播多播服務(MBMS)之使用者服務描述(USD)檔案;且經由以對話發起協定為基礎之(以SIP為基礎之)控制機制來兩個UE之間的P2P對話。
另一實例提供用於經由P2P應用伺服器提供點對點(P2P)內容分配之方法600,如圖8中之流程圖中所示。方法可執行為機器或電腦電路系統上之指令,其中指令包括於至少一電腦可讀媒體或一非暫時性機器可讀儲存媒體上。方法包括經由網際網路協定(IP)多媒體子系統(IMS)核心網路(IM CN)子系統自第一UE接收具有對話描述協定(SDP)要約之對話發起協定(SIP)邀請之操作,如方塊610
中。之後為經由IM CN子系統將具有SDP要約之SIP邀請轉送至第二UE之操作,如在方塊620中。方法之下一操作可為經由IM CN子系統自第二UE接收具有SDP之SIP確認,如在方塊630中。方法可進一步包括經由IM CN子系統將具有SDP之SIP確認轉送至第一UE,如在方塊640中。
在一實例中,方法可進一步包括:管理第一UE與第二UE之間的以超文本傳送協定為基礎之(以HTTP為基礎之)下載遞送;管理第一UE與第二UE之間的HTTP動態適應性串流(DASH)串流;或管理自發送UE至多個接收UE的以單向傳送檔案遞送為基礎之(以FLUTE為基礎之)網際網路協定(IP)多播。以HTTP為基礎之下載遞送可包括第三代合作夥伴計畫(3GPP)檔案格式(3GP)檔案。DASH串流可包括具有不同表示之媒體呈現描述(MPD)元資料檔案或DASH格式化內容。以FLUTE為基礎之IP多播可包括異步分層編碼(ALC)、分層編碼傳送(LCT)構建塊或使用者服務描述(USD)檔案。
在另一實例中,方法可進一步包括:轉碼P2P內容;重新封包P2P內容;超文本傳送協定(HTTP)動態適應串流格式化(DASH格式化)P2P內容;分段P2P內容;或P2P內容之以單向傳送檔案遞送為基礎之(以FLUTE為基礎之)遞送。方法可進一步包括:主管對話發起協定(SIP)背對背使用者代理(B2BUA);經由SIP B2BUA在兩個UE之間建立P2P內容遞送對話;經由SIP B2BUA在兩個UE之間協商P2P對話參數;經由對話描述協定(SDP)管理P2P內容遞送對
話;或經由媒體呈現描述(MPD)元資料檔案或使用者服務描述(USD)檔案之修改產生用於P2P內容遞送之新元資料。
在另一組態中,方法可進一步包括:主管P2P內容分配服務;在P2P對話發起及P2P對話修改期間執行服務授權及點選擇;檢驗使用者的P2P服務預約;檢驗對所請求內容之使用者權力;或允許或拒絕對P2P服務之存取。方法可進一步包括:將內容元資料自第一UE轉送至第二UE,其中內容元資料包括用於超文本傳送協定(HTTP)動態適應性串流(DASH)之媒體呈現描述(MPD)元資料檔案或用於多媒體廣播多播服務(MBMS)之使用者服務描述(USD)檔案;以及經由以對話發起協定為基礎之(以SIP為基礎之)控制機制控制P2P對話。P2P應用伺服器包括在服務控制功能(SCF)中。
圖9示出示例性使用者設備(UE)720,IMS核心、EPC、PS核心及/或RAN 780中之節點710,及用於提供P2P內容分配之P2P應用伺服器130(或SCF 132)。例如,SCF可為可操作的,以用於P2P內容分配,如圖7之500中所述。在另一組態中,P2P應用伺服器可經組配以用於提供P2P內容分配,如圖8之600中所述。在一實例中,UE可經由節點與SCF或P2P應用伺服器通訊。節點710可包括基地台(BS)、節點B(NB)、演進節點B(eNB)、基帶單元(BBU)、遠端無線電頭(RRH)、遠端無線電設備(RRE)、遠端無線電單元(RRU)、中央處理模組(CPM)。
UE 720(例如,客戶端裝置)可包括處理器722及
收發機724。UE可經組配以用於P2P內容分配。處理器可經組配來:主管用於以網際網路協定(IP)多媒體子系統為基礎之(以IMS為基礎之)P2P串流或內容元資料共享之對話發起協定(SIP)客戶端及超文本傳送協定/SIP(HTTP/SIP)配接器;或主管用於以IMS為基礎之P2P多播串流之對話發起協定(SIP)客戶端及多媒體廣播多播服務(MBMS)客戶端。收發機可經組配來:自服務控制功能(SCF)中之P2P應用伺服器接收P2P內容遞送對話參數。
在用於以IMS為基礎之P2P串流或內容元資料共享之一實例中,處理器可進一步經組配來:主管HTTP客戶端;且建立SIP對話。收發機可進一步經組配來:自另一UE接收媒體呈現描述(MPD)元資料檔案;且基於MPD元資料檔案經由對話描述協定(SDP)自該另一UE接收DASH格式化內容。DASH格式化內容可經由P2P應用伺服器控制。
在用於以IMS為基礎之P2P串流或內容元資料共享之另一實例中,處理器可進一步經組配來:主管HTTP伺服器;且建立SIP對話。收發機可進一步經組配來:將媒體呈現描述(MPD)元資料檔案傳輸至另一UE;且基於MPD元資料檔案經由對話描述協定(SDP)將DASH格式化內容傳輸至該另一UE。DASH格式化內容可經由P2P應用伺服器控制。
在用於以IMS為基礎之P2P串流或內容元資料共享之另一組態中,處理器可進一步經組配來建立SIP對話。收發機可進一步經組配來自另一UE接收P2P多播串流中之
使用者服務描述(USD)檔案及相關聯資料內容。P2P多播串流可經由P2P應用伺服器控制。在另一實例中,處理器可進一步經組配來:主管廣播多播服務中心使用者平面子功能(BMSC.UPF)或單向傳送檔案遞送(FLUTE)伺服器;且建立SIP對話。收發機可進一步經組配來將P2P多播串流中之使用者服務描述(USD)檔案及相關聯資料內容上載至另一UE。P2P多播串流可經由P2P應用伺服器控制。
在另一實例中,收發機可進一步經組配來:自另一UE接收以超文本傳送協定為基礎之(以HTTP為基礎之)下載;自該另一UE接收HTTP動態適應性串流(DASH)串流;自發送UE接收以單向傳送檔案為基礎之(以FLUTE為基礎之)網際網路協定(IP)多播;將以HTTP為基礎之上載傳輸至該另一UE;將DASH串流上載至該另一UE;或將以FLUTE為基礎之IP多播遞送至多個接收UE。以HTTP為基礎之下載遞送可包括第三代合作夥伴計畫(3GPP)檔案格式(3GP)檔案。DASH串流可包括具有不同表示之媒體呈現描述(MPD)元資料檔案或DASH格式化內容。FLUTE為基礎之IP多播可包括異步分層編碼(ALC)、分層編碼傳送(LCT)構建塊或使用者服務描述(USD)檔案。
在另一組態中,處理器可進一步經組配來:擷取使用者產生之內容(UGC);且以超文本傳送協定(HTTP)動態適應性串流(DASH)格式或以多媒體廣播多播服務(MBMS)格式編碼UGC。收發機可進一步經組配來經由服務控制功能(SCF)中之P2P應用伺服器將UGC上載至另一UE。
圖10提供使用者設備(UE)之示例性說明,該使用者設備(UE)諸如行動終端機(MT)、行動節點、客戶端裝置、行動台(MS)、行動無線裝置、行動通訊裝置、平板電腦、手機或另一類型之無線裝置。UE可包括一或多個天線,該一或多個天線經組配來與節點、巨集節點、低功率節點(LPN),或傳輸台(諸如,基地台(BS))、演進節點B(eNB)、基帶單元(BBU)、遠端無線電頭(RRH)、遠端無線電設備(RRE)、中繼台(RS)、無線電設備(RE)、遠端無線電單元(RRU)、中央處理模組(CPM)或另一類型之無線廣域網路(WWAN)存取點通訊。無線裝置可經組配成使用包括3GPP LTE、WiMAX、高速封包存取(HSPA)、藍牙及WiFi之至少一無線通訊標準來通訊。無線裝置可使用用於每一無線通訊標準之分開的天線或用於多個無線通訊標準之共享天線來通訊。無線裝置可在無線區域網路(WLAN)、無線個人區域網路(WPAN)及/或WWAN中通訊。
圖10亦提供可用於來自UE之音訊輸入及輸出之麥克風及一或多個揚聲器的說明。顯示器螢幕可為液晶顯示器(LCD)螢幕或諸如有機發光二極體(OLED)顯示器之另一類型之顯示器螢幕。顯示螢幕可經組配為觸控螢幕。觸控螢幕可使用電容性、電阻性或另一類型之觸控螢幕技術。應用處理器及圖形處理器可耦接至內部記憶體以提供處理及顯示能力。非依電性記憶體埠亦可用來向使用者提供資料輸入/輸出任選。非依電性記憶體埠亦可用來擴展無線裝置之記憶體能力。鍵盤可與無線裝置整合或無線地連
接至無線裝置以提供額外使用者輸入。亦可使用觸控螢幕提供虛擬鍵盤。
各種技術或其某些態樣或部分可採取實施於有形媒體中之程式碼(亦即,指令)之形式,該有形媒體諸如軟式磁片、光碟片唯讀記憶體(CD-ROM)、硬驅動機、非暫時性電腦可讀儲存媒體或任何另一機器可讀儲存媒體,其中當程式碼經載入且由機器(諸如電腦)執行時,機器變為用於實踐各種技術之裝置。電路系統可包括硬體、韌體、程式碼、可執行碼、電腦指令及/或軟體。非暫時性電腦可讀儲存媒體可為不包括信號之電腦可讀儲存媒體。在可規劃電腦上之程式碼執行之狀況下,運算裝置可包括處理器、處理器可讀之儲存媒體(包括依電性記憶體及非依電性記憶體及/或儲存元件)、至少一輸入裝置及至少一輸出裝置。依電性記憶體及非依電性記憶體及/或儲存元件可為隨機存取記憶體(RAM)、可抹除可規劃唯讀記憶體(EPROM)、快閃驅動機、光學驅動機、磁性硬驅動機、固體狀態驅動機或用於儲存電子資料之另一媒體。節點及無線裝置亦可包括收發機模組(亦即,收發機)、計數器模組(亦即,計數器)、處理模組(亦即,處理器)及/或時鐘模組(亦即,時鐘)或計時器模組(亦即,計時器)。可實行或利用本文所述之各種技術之一或多個程式可使用應用程式設計介面(API)、可再用控制器等。此類程式可以高階程序性或物件導向式程式設計語言來實行,以與電腦系統通訊。然而,若需要,則程式可以組合語言或機器語言來實行。在任何狀況下,語言可
為編譯語言或解譯語言,且與硬體實行方案組合。
應理解,此說明書中所述之功能單元中之許多已標記為模組,以便更具體地強調其實行獨立性。例如,可將模組實行為硬體電路,該硬體電路包含定製超大型積體電路(VLSI)電路或閘陣列、諸如邏輯晶片、電晶體之現成的半導體,或另一離散組件。亦可將模組實行於諸如場可規劃閘陣列、可規劃陣列邏輯、可規劃邏輯裝置等之可規劃硬體裝置中。
亦可將模組實行於軟體中以用於由各種類型之處理器執行。可執行碼之識別模組可例如包含電腦指令之一或多個實體塊或邏輯塊,該一或多個實體塊或邏輯塊可例如組織為物件、程序或函數。然而,識別模組之可執行不必實體上定位在一起,但可包含儲存在不同位置中之全異指令,該等不同位置在邏輯上接合在一起時包含模組且達成用於模組之所述目的。
實際上,可執行碼之模組可為單個指令或許多指令,且甚至可分佈在若干不同碼分段上、分佈不同程式之中且越過若干記憶體裝置而分佈。類似地,操作資料在本文中可識別且示出為在模組內,且可以任何適合的形式實施並且組織於任何適合類型之資料結構內。操作資料可經收集為單個資料集,或可分佈在包括在不同儲存裝置上之不同位置上,且可至少部分僅作為電子信號存在於系統或網路上。模組可為被動的或主動的,包括可操作以執行所要的功能之代理。
本說明書自始至終對「一實例」或「示範性」之參考意味結合該實例所述之特定特徵、結構或特性包括在本發明之至少一實施例中。因此,用語「在一實例中」或字語「示範性」在全部本說明書之各種地方之出現不一定全部涉及相同實施例。
如本文中所使用,可為了方便起見將多個項、結構元件、組成元件及/或材料呈現於共用清單中。然而,應將此等清單視為似乎清單之每一構件皆單獨識別為分開的且獨特的構件。因此,此清單之單獨構件在無相反指示的情況下僅基於其呈現於共用分組中而不應被視為相同清單之任何其他構件之事實等效物。另外,本發明之各種實施例及實例連同用於其各種組件之替選方案一起可在本文中涉及到。將理解,此類實施例、實例及替選方案將不被視為彼此之實際等效物,而是將被視為本發明之分開的及自律表示。
此外,所述特徵、結構或特性可以任何適合的方式組合於一或更多實施例中。在以下描述中,提供許多特定細節,諸如佈局之實例、距離、網路實例等,以提供本發明之實施例之徹底理解。然而,相關技術之技術者將認知到,可在沒有特定細節中之一或多個的情況下或使用其他方法、組件、佈局等來實踐本發明。在其他情況下,沒有詳細地展示或描述熟知的結構、材料或操作以避免混淆本發明之態樣。
雖然前述實例說明本發明在一或多個特定應用
中之原理,但是一般技術者將顯而易見可在無發明性能力之練習的情況下且在不脫離本發明之原理及概念的情況下進行實行方案之形式、使用及細節之許多修改。因此,除如由以下闡述之申請專利範圍限制之外,不欲限制本發明。
100‧‧‧以IMS為基礎之P2P內容分配系統/IMS
102‧‧‧IMS CN子系統
104‧‧‧入口網站
106‧‧‧網路伺服器
108‧‧‧內容快取記憶體伺服器
110‧‧‧IMS組配之UE/使用者設備/UE
Claims (22)
- 一種經由一P2P應用伺服器提供點對點(P2P)內容分配之方法,該方法包含下列步驟:經由一網際網路協定(IP)多媒體子系統(IMS)核心網路(IM CN)子系統接收來自一第一使用者設備(UE)之具有一對話描述協定(SDP)要約之一對話發起協定(SIP)邀請;經由該IM CN子系統將具有該SDP要約之該SIP邀請轉送至一第二UE;經由該IM CN子系統自該第二UE接收具有一SDP之SIP確認;經由該IM CN子系統將具有該SDP之SIP確認轉送至該第一UE;以及管理該第一UE與該第二UE之間的以超文本傳送協定為基礎之(以HTTP為基礎之)下載遞送;管理該第一UE與該第二UE之間的HTTP動態適應性串流(DASH)串流;或管理自一發送UE至多個接收UE的以單向傳送檔案遞送為基礎之(以FLUTE為基礎之)網際網路協定(IP)多播。
- 如請求項1之方法,其中:該以HTTP為基礎之下載遞送包括一第三代合作夥伴計畫(3GPP)檔案格式(3GP)檔案; 該DASH串流包括具有不同表示之一媒體呈現描述(MPD)元資料檔案或DASH格式化內容;且該以FLUTE為基礎之IP多播包括異步分層編碼(ALC)、一分層編碼傳送(LCT)構建塊或一使用者服務描述(USD)檔案。
- 如請求項1之方法,其進一步包含:轉碼P2P內容;重新封包該P2P內容;超文本傳送協定(HTTP)動態適應性串流格式化(DASH格式化)該P2P內容;分段該P2P內容;或該P2P內容之以單向傳送檔案遞送為基礎之(以FLUTE為基礎之)遞送。
- 如請求項1之方法,其進一步包含:主管一對話發起協定(SIP)背對背使用者代理(B2BUA);經由該SIP B2BUA在該兩個UE之間建立一P2P內容遞送對話;經由該SIP B2BUA在該兩個UE之間協商一P2P對話參數;經由一對話描述協定(SDP)管理該P2P內容遞送對話;或經由一媒體呈現描述(MPD)元資料檔案或一使用者服務描述(USD)檔案之修改產生用於P2P內容遞送之 新元資料。
- 如請求項1之方法,其進一步包含:主管P2P內容分配服務;在一P2P對話發起與一P2P對話修改期間執行服務授權與點選擇;驗證使用者的P2P服務預約;驗證對所請求內容之使用者權力;或允許或拒絕對P2P服務之存取。
- 如請求項1之方法,其進一步包含:將內容元資料自該第一UE轉送至該第二UE,其中該內容元資料包括用於超文本傳送協定(HTTP)動態適應性串流(DASH)之一媒體呈現描述(MPD)元資料檔案或用於一多媒體廣播多播服務(MBMS)之一使用者服務描述(USD)檔案;以及經由一以對話發起協定為基礎之(以SIP為基礎之)控制機制控制一P2P對話。
- 如請求項1之方法,其中該P2P應用伺服器被包括在一服務控制功能(SCF)中。
- 一種包含多個指令之至少一個非暫時性機器可讀取儲存媒體,該等多個指令經調適以被執行以實行如請求項1之方法。
- 一種服務控制功能(SCF)模組,其可操作以用於點對點(P2P)內容分配,該服務控制功能模組具有電腦電路經組配以進行: 主管一P2P應用伺服器,該P2P應用伺服器可操作以管理兩個使用者設備(UE)之間的網際網路協定(IP)多媒體子系統(IMS)內容分配;以及管理兩個UE之間的以超文本傳送協定為基礎之(以HTTP為基礎之)下載遞送;管理兩個UE之間的HTTP動態適應性串流(DASH)串流;或管理自一發送UE至多個接收UE的以單向傳送檔案遞送為基礎之(以FLUTE為基礎之)網際網路協定(IP)多播。
- 如請求項9之SCF模組,其中:該以HTTP為基礎之下載遞送包括一第三代合作夥伴計畫(3GPP)檔案格式(3GP)檔案;該DASH串流包括具有不同表示之一媒體呈現描述(MPD)元資料檔案或DASH格式化內容;且該以FLUTE為基礎之IP多播包括異步分層編碼(ALC)、一分層編碼傳送(LCT)構建塊或一使用者服務描述(USD)檔案。
- 如請求項9之SCF模組,其中經組配以主管該P2P應用伺服器之該電腦電路係進一步經組配以進行:轉碼P2P內容;重新封包該P2P內容;超文本傳送協定(HTTP)動態適應性串流格式化(DASH格式化)該P2P內容; 分段該P2P內容;或提供該P2P內容之以單向傳送檔案遞送為基礎之(以FLUTE為基礎之)遞送。
- 如請求項9之SCF模組,其中經組配以主管該P2P應用伺服器之該電腦電路係進一步經組配以進行:主管一對話發起協定(SIP)背對背使用者代理(B2BUA);經由該SIP B2BUA在該兩個UE之間建立一P2P內容遞送對話;經由該SIP B2BUA在該兩個UE之間協商一P2P對話參數;經由一對話描述協定(SDP)管理該P2P內容遞送對話;或經由一媒體呈現描述(MPD)元資料檔案或一使用者服務描述(USD)檔案之修改產生用於P2P內容遞送之新元資料。
- 如請求項9之SCF模組,其中經組配以主管該P2P應用伺服器之該電腦電路係進一步經組配以進行:主管P2P內容分配服務;在一P2P對話發起與一P2P對話修改期間執行服務授權與點選擇;驗證用於一P2P服務之一使用者預約;或驗證對來自一發送UE之所請求內容之使用者權力。
- 如請求項9之SCF模組,其中經組配以主管該P2P應用伺服器之該電腦電路係進一步經組配以進行:在該兩個UE之間共享內容元資料,其中該內容元資料包括用於超文本傳送協定(HTTP)動態適應性串流(DASH)之一媒體呈現描述(MPD)元資料檔案或用於一多媒體廣播多播服務(MBMS)之一使用者服務描述(USD)檔案;且經由一以對話發起協定為基礎之(以SIP為基礎之)控制機制控制該兩個UE之間的一P2P對話。
- 一種用於點對點(P2P)內容分配之使用者設備(UE),其包含:一處理器,其用以進行:主管用於以網際網路協定(IP)多媒體子系統為基礎之(以IMS為基礎之)P2P串流或內容元資料共享之一對話發起協定(SIP)客戶端與一超文本傳送協定/SIP(HTTP/SIP)配接器;或主管用於以IMS為基礎之P2P多播串流之一對話發起協定(SIP)客戶端與一多媒體廣播多播服務(MBMS)客戶端;以及一收發機,其用以進行:接收來自一服務控制功能(SCF)中之一P2P應用伺服器之P2P內容遞送對話參數;及接收來自另一UE之一以超文本傳送協定為基礎之(以HTTP為基礎之)下載; 接收來自該另一UE之一HTTP動態適應性串流(DASH)串流;接收來自一發送UE之一以單向傳送檔案為基礎之(以FLUTE為基礎之)網際網路協定(IP)多播;將一以HTTP為基礎之上載傳輸至該另一UE;將一DASH串流上載至該另一UE;或將一以FLUTE為基礎之IP多播遞送至多個接收UE。
- 如請求項15之UE,其中針對以IMS為基礎之P2P串流或內容元資料共享:該處理器係進一步經組配以進行:主管一HTTP客戶端;且建立一SIP對話;以及一收發機用以進行:接收來自另一UE之一媒體呈現描述(MPD)元資料檔案;且基於該MPD元資料檔案經由一對話描述協定(SDP)接收來自該另一UE之DASH格式化內容,其中該DASH格式化內容係經由該P2P應用伺服器所控制。
- 如請求項15之UE,其中針對以IMS為基礎之P2P串流或內容元資料共享:該處理器係進一步經組配以進行:主管一HTTP伺服器;且 建立一SIP對話;以及一收發機用以進行:將一媒體呈現描述(MPD)元資料檔案傳輸至另一UE;且基於該MPD元資料檔案經由一對話描述協定(SDP)將DASH格式化內容傳輸至該另一UE,其中該DASH格式化內容係經由該P2P應用伺服器所控制。
- 如請求項15之UE,其中針對以IMS為基礎之P2P多播串流:該處理器係進一步經組配以進行:建立一SIP對話;以及一收發機係經組配以進行:接收來自另一UE之一P2P多播串流中之一使用者服務描述(USD)檔案與相關聯資料內容,其中該P2P多播串流係經由該P2P應用伺服器所控制。
- 如請求項15之UE,針對以IMS為基礎之P2P多播串流:該處理器係進一步經組配以進行:主管一廣播多播服務中心使用者平面子功能(BMSC.UPF)或一單向傳送檔案遞送(FLUTE)伺服器;且建立一SIP對話;以及一收發機用以進行:將一P2P多播串流中之一使用者服務描述 (USD)檔案與相關聯資料內容上載至另一UE,其中該P2P多播串流係經由該P2P應用伺服器所控制。
- 如請求項15之UE,其中:該以HTTP為基礎之下載遞送包括一第三代合作夥伴計畫(3GPP)檔案格式(3GP)檔案;該DASH串流包括具有不同表示之一媒體呈現描述(MPD)元資料檔案或DASH格式化內容;且該以FLUTE為基礎之IP多播包括異步分層編碼(ALC)、一分層編碼傳送(LCT)構建塊或一使用者服務描述(USD)檔案。
- 如請求項15之UE,其中:該處理器係進一步經組配以進行:擷取使用者產生之內容(UGC);且以一超文本傳送協定(HTTP)動態適應性串流(DASH)格式或以一多媒體廣播多播服務(MBMS)格式編碼該UGC;以及一收發機用以進行:經由一服務控制功能(SCF)中之一P2P應用伺服器將該UGC上載至另一UE。
- 如請求項15之UE,其中該UE包括一天線、一攝影機、一觸控感測顯示器螢幕、一揚聲器、一麥克風、一圖形處理器、一應用處理器、內部記憶體或一非依電性記憶體埠。
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