網易雲信陳功：體驗共享和無限融合是雲通信未來的進化方向丨QCon

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"無知覺間，你一定接觸過雲通信技術。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在疫情的推動下，即時通信、直播、實時音視頻等技術在各行各業廣泛落地。在雲能力的加持下，通信行業迎來新一波發展浪潮，加速底層技術迭代升級。隨着多項雲通信技術廣泛應用在各個場景，越來越多亟待解決的問題暴露出來。如何應對場景複雜性？雲通信行業未來的發展趨勢是什麼？作爲網易智企旗下的融合通信雲服務專家，網易雲信給出了答案。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"InfoQ 編輯有幸在 QCon 2021 全球軟件開發大會上，採訪到了網易智企技術 VP 陳功老師，由他親自爲我們講解雲通信行業的核心關鍵點。"}]},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/infoq\/ee\/eeed21ab8489a66e627648fa180e13c8.jpeg","alt":null,"title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"以下是採訪的文字內容。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"InfoQ：請陳老師做下自我介紹並大致地介紹下您的職業發展歷程。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"陳功：大家好，我是網易智企的技術 VP 陳功。我在2008年博士畢業，研究生階段的主要研究方向是計算機視覺，當時接觸到了很多圖像、視頻領域的相關技術，工作後也在這一領域延伸，先後加入過兩家半導體公司，從事多媒體、音視頻相關的工作。比較有幸的是，在 Intel 工作時接觸了 WebRTC，算是國內最早專注於 WebRTC 的團隊之一，參與到了 Intel Collaboration Suite for WebRTC 架構設計和研發，也就是開源 WebRTC 套件 OWT 的前身。後來加入了一家創業公司，以及到現在的網易雲信團隊，算下來已經在雲通信行業深耕6年多的時間了。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"InfoQ：請您簡要介紹下網易雲信的融合通信雲，談談有哪些核心技術？"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"陳功：當前，雲通信行業呈現出了"},{"type":"text","marks":[{"type":"strong"}],"text":"更廣範圍、更深程度的融合趨勢"},{"type":"text","text":"，網易雲信的融合通信雲也是順應行業發展趨勢，面向市場提供了豐富的雲通信產品矩陣，並通過"},{"type":"text","marks":[{"type":"strong"}],"text":"“音視頻+即時通訊+其他”"},{"type":"text","text":"的融合業務模式，構建了行業核心競爭力。"}]},{"type":"image","attrs":{"src":"https:\/\/netease-we.feishu.cn\/space\/api\/box\/stream\/download\/asynccode\/?code=YjZlYjRlNTg5NDJjMmVjOGMyMDkyYjk1YWNmODRmYWRfYk1TdDZLcDdNamk5TUZyMTR3d01Vd0NXSWZjQnBLNHZfVG9rZW46Ym94Y243OVk3Nlp6S2NrODJyVERxQUNyUWJoXzE2MzU5MzcwODc6MTYzNTk0MDY4N19WNA","alt":null,"title":null,"style":[{"key":"width","value":"50%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在網易雲信的產品中，既有傳統的融合通信能力，如：短信、語音、雲呼叫中心等，又具備互聯網通信的能力，如：IM、RTC、直播、點播、互動白板等。通過多 SKU 的組合，打造多場景產品應用解決方案，深度賦能各行各業的企業客戶。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"網易雲信的核心技術緊密圍繞 "},{"type":"text","marks":[{"type":"strong"}],"text":"“音視頻+即時通訊+其他” "},{"type":"text","text":"的融合和賦能，不但包括了在雲通信關鍵技術上的多年沉澱，如：大規模分佈式傳輸網絡、高性能通信服務、高效視頻編碼、智能音頻處理、弱網體驗保障等；還包括了爲客戶深度賦能的場景化技術，如：智碼超清技術、音頻空間音效、語音\/視頻特效、虛擬形象等。依賴於 AI 技術（計算機視覺、機器學習）與傳統算法和基礎通信能力的結合，構建出“AI+”智能通信雲服務平臺。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"InfoQ：音視頻技術如今也是融合通信雲主要技術之一。從行業角度出發，能否談談如今雲通信行業概況，如今處在什麼發展階段？AI的發展對雲通信行業帶來怎樣的變化？"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"陳功：當下的雲通信行業呈現出了欣欣向榮、蓬勃發展的態勢，尤其在近兩年疫情的助推下，讓相關從業者和資本市場對行業發展產生了非常樂觀的預期。我認爲目前整個行業還處於高速發展的黃金階段。5年多前，雲通信行業對很多人來說還比較陌生，那時候的行業從業者更多處於修煉內功、打磨技術的階段。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"經過這些年的技術積累和基建升級，雲通信所賦能的創新場景遍地開花，行業內的服務提供商的價值也獲得了廣泛認可。目前雲通信的應用領域相對比較集中，娛樂社交和在線教育是兩個重要的場景。可以預期的是，隨着 AI 技術和 5G 升級帶來的更多機遇，以及沉浸式、元宇宙概念帶來的巨大想象空間，行業會朝着與業務結合更深度、更緊密的方向快速發展，會看到更廣範圍、更多元化的應用落地，雲通信將會無處不在。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"AI 與雲通信有着非常好的結合點，主要體現在技術和體驗兩個維度。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在技術層面，AI 給底層技術的加持，驅動着行業技術升級。越來越多的音視頻算法尋求與 AI 的結合，如：視頻超分、編碼、音頻降噪、場景檢測等，都是典型的落地案例，“AI+音視頻”能夠大幅提升傳統算法的質量。網易雲信擁有自己的 AI 實驗室，進行 AI 相關技術的前瞻性佈局和研究。在今年，團隊聚焦 AI 音頻降噪和 AI 音樂檢測方向的兩篇論文也被聲學頂會「第50屆國際噪聲控制工程會議」收錄，獲得了國際公開認可。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在體驗層面，AI 技術在產品體驗的升級、新鮮玩法的塑造、以及更逼真的場景營造方面有非常大的技術優勢。AI 爲雲通信行業帶來了更多、更有趣的玩法，如：AI 特效、動畫合成、表情遷移等。展望元宇宙的潛在市場，AI 技術將會加速雲通信更大規模的普及和應用，併爲終端用戶帶來煥然一新的體驗和感受。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"InfoQ：網易雲信身處行業變化中，處在什麼位置？多年來的技術演進路線是什麼？"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"陳功：在即時通訊方面，網易雲信作爲業內最早可以承載億級日活的即時通訊平臺，無論是日活、覆蓋終端數，還是消息分發量，網易雲信目前均處在行業第一的位置。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在音視頻通話方面，網易雲信近年來深耕音視頻技術，經過多年的厚積薄發，目前也已躋身行業第一梯隊。2020年，網易雲信發佈的新一代音視頻技術架構進行了全流程的技術升級，基於該技術架構打造的「音視頻通話2.0」融合了 AI +音視頻的算法優勢，爲我們的企業客戶提供更靈活、穩定、流暢、易用的音視頻技術服務。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"其他方面，網易雲信提供的一站式融合通信服務，在雲通信產品的覆蓋度以及協同服務上也是行業內首屈一指的。在 Gartner 近期發佈的《CPaaS 市場指南 (Market Guide for Communications Platform as a Service)》研究報告中，網易雲信憑藉自身在統一通信、5G消息平臺、低延時直播、實時音視頻、基於 AI 的音視頻優化，以及通信安全等方面的領先優勢入選了此份報告，被列爲全球代表性供應商。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"技術演進路線可分爲三個方向：橫向開拓、縱向深入、融合創新。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"numberedlist","attrs":{"start":"1","normalizeStart":1},"content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":1,"align":null,"origin":null},"content":[{"type":"text","text":"橫向開拓：網易雲信在最初 IM 即時通訊技術能力的基礎上不斷演進，目前已經擴展出包括音視頻通話、直播、點播、互動白板等十餘種功能，並且依託於團隊深厚的技術儲備，還在不斷豐富產品功能，擴展產品矩陣。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":2,"align":null,"origin":null},"content":[{"type":"text","text":"縱向深入：針對雲通信的各項關鍵技術，持續投入技術的攻堅打磨，目前在全球分佈式傳輸網絡、高性能通信服務器、智碼超清、自適應音頻處理、弱網傳輸對抗等方向上取得了卓著的技術成果，保障了網易雲信的核心競爭力。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":3,"align":null,"origin":null},"content":[{"type":"text","text":"融合創新：通過跨產品 SKU 的底層技術融合，展現網易雲信產品矩陣的優勢，並且通過“AI+音視頻”的賦能，打造融合產品的競爭力。比如，通過音視頻與內容安全檢測的技術融合，提供了一站式安全通信解決方案；通過 RTC 與語音呼叫的能力融合，提供了通話高接通解決方案；通過 AI 與 RTC 的技術融合，提供了一站式音頻\/視頻特效、虛擬人的解決方案等等。諸如此類，都是網易雲信融合創新的體現，並且依託網易集團在 AI 方向深厚的技術積累，網易雲信會一直走在創新前沿。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"InfoQ：目前行業內雲通信產品也比較多，行業相對繁榮，在您看來企業在選擇產品時，需要着重關注哪些方面？"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"陳功：一方面，服務提供商的品牌和口碑是企業看重的，口碑則包括了質量是否可靠、服務是否穩定，也包括了作爲服務提供商，是否足夠了解客戶的行業和場景。比如，客戶在新場景探索過程中可能遇到的“坑”，服務提供商若能具備充足的相關經驗，給予深入的指引，爲客戶降低接入和上線成本，這是客戶樂於看到的理想狀態。網易雲信作爲網易集團的 toB 團隊，與集團內的兄弟 BU 長期保持緊密的合作共建，在遊戲、娛樂、教育等多個場景擁有多年的豐富的實戰經驗，是非常懂行業和客戶的服務提供商。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"另一方面，一站式的雲通信能力也很關鍵。客戶在打造產品時，通常需要不同的雲通信能力單元，如：音視頻、IM、互動白板、一鍵登錄等能力，若是娛樂社交行業的客戶，可能還需要美顏、內容安全檢測等。要實現這些功能，如果對接多個服務提供商非常繁瑣，面對多個技術支持團隊，在配合上也很低效。這種情況下，服務提供商如果能提供一站式的能力，將會是很大的優勢。網易雲信在產品設計上就站在了客戶的視角，不但提供豐富的雲通信產品矩陣，在美顏和內容安全檢測方面也有自研產品，完美契合客戶的終極需求。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"InfoQ：與其他同類產品相比，網易雲信雲通信產品的技術優勢是什麼？"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"陳功：網易雲信的技術優勢體現在不同的維度上。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"架構優勢："}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"即時消息：高性能的 IM 服務端架構，能夠支撐萬人超大羣、千萬級聊天室、百億級消息的 IM 業務，並且能夠做到“水平可擴容、垂直可隔離”，高效支持日活過億平臺的擴容和升級。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"音視頻：新一代音視頻架構基於最新的 WebRTC 演進，服務端通過 SFU 和 MCU 的融合，可以靈活滿足通用業務服務的擴展需求。例如，支持雲端的媒體處理和分析有天然的優勢。客戶端針對媒體和網絡引擎的深度優化，在低性能設備上也能保障高清流暢的通話體驗，更好的適配中低端移動設備（這是東南亞出海的痛點），也有利於在 IoT、可穿戴設備領域拓展。此外，RTC 在進行客戶端架構重構之後，沉澱出相對於友商的功能擴展優勢，比如：音視頻主輔流功能、多房間推拉流功能等，都已在客戶的真實場景得到落地驗證。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"基建優勢："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"網易雲信自研了全球大規模傳輸網（WE-CAN），它是一個基於公共互聯網的 overlay，是網易雲信業務層的傳輸基座，一個獨立於具體業務的通用傳輸系統。在架構設計之初，便系統性考慮了產品架構的競爭力，主動規避了其他傳輸網的架構缺陷，相比於其他軟件自定義傳輸網絡，在傳輸模式多樣化及成本方面都具備顯著優勢。"}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"傳輸模式多樣化：提供多種傳輸模式，不只支持媒體流，還支持 IM 消息、信令，以及通用數據的傳輸，完美支撐了網易智企多個業務的數據傳輸。如：網易易盾的海外圖片檢測服務，已經在 WE-CAN 網絡中實現了加速傳輸，證明了 WE-CAN 在傳輸模型延展性上的巨大優勢。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"成本優勢：基於智能調度的傳輸分級服務，在架構策略層面形成成本優勢，實現在 RTC、低延時直播、IM 業務上的成本優化。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"音視頻優勢："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"網易雲信在音視頻技術上厚積薄發，目前打造的技術優勢包括："}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"弱網體驗：分段 QoS 策略加上智能流控，將音視頻抗丟包邊界提升到 75% 以上，在帶寬利用率 90% 的水平線上，可對抗 2000ms 的網絡抖動。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"視頻體驗：自研的視頻質量控制（VQC）算法，結合了網絡和性能自適應策略，能夠動態跟蹤網絡指標變化，快速調整視頻編碼模式和參數，達到最優的畫質呈現效果。並且能夠根據設備性能的狀態來調整部分視頻算法複雜度，在保障高端設備極致體驗的同時，兼容更多的終端設備。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"視頻畫質：智碼超清技術，以人眼主觀體驗爲目標，融合網易雲信自研 NE264 編碼器和高性能 AI 視頻超分，以及去噪、去僞影、ROI 等畫質增強處理技術，通過場景智能分析和自適應參數配置，讓用戶在同等碼率下獲得更加極致的超高清視覺體驗。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"空間音效：網易雲信基於主流的雙耳 Binaural 方案，利用高階 Ambisoics 編碼、HRTF、房間建模和人工混響技術，爲實時語音通信帶來了真正的 3D 空間音效，具有更好的方位效果。同時支持不同耳機和適配和補償，達到頻響均衡，外化感和真實感更好。網易雲信也是行業內首家支持 6DoF 空間音效的服務提供商。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"融合優勢："}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"IM\/音視頻與內容安全的技術融合，打造一站式安全通信方案：通過融合網易雲信和網易易盾產品推出的安全通，實現登錄1個後臺、對接1個系統、進行1次結算就能完成通信與視頻+內容安全方案的完整接入，提供極致的一體化快速接入和服務體驗優勢。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"通過檢測模塊前置、底層算法融合、服務混合部署等網易雲信與網易易盾產品融合，極大降低了因需要內容安全檢測而引入的通信費用，在成本結構上存在本質的優勢。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"RTC 與運營商能力融合，推出網易雲信通話高接通解決方案。通過融合網易雲信 RTC 和運營商能力推出的通話高接通解決方案，在產品底層進行融合，形成了以應用保活、線路融合呼叫、輔助提醒爲核心的融合呼叫完整方案，實現 RTC 與線路通話的打通，幫助提升用戶通話的接通率，賦能客戶增收提效。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"RTC 與 AI 特效的結合，打造一站式音視頻特效產品。結合了網易雲信 RTC 和自研 AI 美顏、貼紙、虛擬形象的技術能力，推出視頻特效產品，通過音視頻處理層面的深度融合，實現不同RTC 場景下最優的特效效果和性能。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"InfoQ：保證傳輸質量是通信行業長期課題，網易雲信的自研傳輸網目前有什麼技術進展？"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"陳功：網易雲信自研的大規模傳輸網 WE-CAN 是基於公共互聯網的 overlay，它是網易雲信業務層的傳輸基座，是獨立於具體業務的一個通用傳輸系統。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"WE-CAN 的核心優勢是能夠在降低傳輸延遲、保證傳輸可靠性的同時降低帶寬成本，同時，由於它是獨立於業務的，架構上比較重視分層抽象，所以可以把基礎的路由傳輸加速能力封裝套用到不同的業務場景，適應不同的傳輸需求。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"作爲一個純軟件實現的大型分佈式傳輸系統，WE-CAN 的核心能力是將網易雲信在全球的數百個邊緣節點組織起來，通過實時路由來解決任意兩個邊緣節點間的傳輸問題。對這部分網內傳輸質量，我們通過自研傳輸協議和智能路由算法，以及對節點間 QoS 策略的深度優化，達到了很好的效果，尤其在遠距離或者跨國傳輸場景下，WE-CAN 已經可以達到或接近專線質量。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在邊緣節點的分配調度上，我們也做了大量的工作，通過對歷史數據和實時上報事件的聚合分析，WE-CAN 會給每一個客戶端分配到最優的接入服務器，保證“最後一公里”的傳輸質量。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"目前 WE-CAN 已經全面支撐網易雲信所有業務的各種傳輸需求，承擔起了包括 RTC 實時音視頻服務器間極聯轉發、IM 消息中心到邊緣的擴散、直播點播中低延遲場景下對CDN的替換、數據上報從各地收集節點到數據中心傳輸加速等等應用場景。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"除了網易雲信之外，WE-CAN 還成功對接了網易集團內部其他具有傳輸加速需求的團隊，我們搭建了一個 HTTP 全球代理加速網絡，對於具有各種 RESTful API 或者類似 HTTP 調用加速需求的業務場景都可以適用，並且在線上運行穩定，加速效果非常突出。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"InfoQ：融合通信未來的進化方向是什麼？可否給出一些關鍵詞？"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"陳功：我認爲的兩個關鍵詞分別是體驗共享和無限融合。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"體驗共享："},{"type":"text","text":"在各場景線上化的過程中，交流溝通的真實感是非常重要的一環，比如一起K歌，一起看電影等等場景。傳統的線上娛樂受到技術、設備、網絡等巨大限制，無法做到真正的體驗共享。隨着融合通信及相關技術的不斷演進，在全高清、低延時、沉浸式的質量保障下，體驗共享所實現的真實世界與虛擬場景的銜接，會是一個新趨勢。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"無限融合："},{"type":"text","text":"融合通信的未來在於融合，這裏的融合既包括了底層通信技術、交叉學科，以及相關功能組件的融合，也包括了在場景化落地過程中所需的線下與線上資源的整合，以及衍生出的在 IP 資源和版權方向上的合作。融合通信有機會從一個技術領域轉變爲技術生態。"}]}]}