JP2016510527A - Dashアウェア・ネットワークアプリケーションファンクション(d−naf) - Google Patents
Dashアウェア・ネットワークアプリケーションファンクション(d−naf) Download PDFInfo
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Abstract
Description
を鑑賞することに興味がある。映画は、異なるビットレート及び/又は解像度で、DASHフォーマットにおいて利用可能である。ボブがプレミアムプランに加入しているおかげで、ボブのクライアントアプリケーションは、サービスによって提供される種々のビットレート及び/又は解像度においてストリームにアクセスして受信することができる(例えば、リンクのバンド幅とデバイス能力が与えられ、所与の時間において、最高の解像度を選択することによる)。アリスのクライアントアプリケーションは、彼女のベーシックな加入のせいで、最高のビットレート及び/又は解像度にアクセスすることが制限される。そこで、DASHコンテンツ認証を使用しているアリスのコンテンツアプリケーションは、利用可能なビットレート及び/又は解像度の限定されたセットからのストリームだけを受信する。
Claims (25)
- サーバー上のダイナミックアダプティブストリーミング・オーバー・ハイパーテキストトランスファープロトコル(HTTP)アウェア(DASH−aware)ネットワークアプリケーションファンクション(D−NAF)であって、
クライアントを認証するためのネットワークアプリケーションファンクション(NAF)と、
前記クライアントに対して、DASHコンテンツおよび認証情報を配信するためのDASHプロキシと、
を含む、D−NAF。 - 前記DASHプロキシは、さらに、
コンテンツ特定認証ポリシ情報を含んでいるDASHコンテンツ情報に対するDASHメディア表現記述(MPD)メタデータファイルをパースし、かつ、
前記NAFからの認証ポリシ情報を含むように前記MPDを変更する、
ように構成されており、
前記D−NAFは、さらに、
コンテンツ特定認証ポリシに基づいてDASHコンテンツへのアクセスのために前記クライアントを承認する、
ように構成されている、
請求項1に記載のD−NAF。 - 前記DASHコンテンツ情報は、DASHコンテンツ情報ユニフォームリソースロケータ(URL)を含み、
前記DASHコンテンツ情報URLは、DASH MPD、期間、適合セット、または、表現レベルに対するベースURLを認証するために使用されるか、もしくは、
前記DASHコンテンツ情報URLは、前記MPDのセグメントURLを認証するために使用される、
請求項2に記載のD−NAF。 - 前記D−NAFは、さらに、
NAF鍵マテリアル(Ks_NAF)、プロフィール、ブートストラップ時間、または、鍵の有効期間、を含んでいるブートストラップサーバーファンクション(BSF)からセッション鍵を取得する、
ように構成されており、かつ、
前記DASHプロキシは、さらに、
前記DASHコンテンツ情報に対するコンテンツ鍵を取得する、
ように構成されている、
請求項2に記載のD−NAF。 - 前記D−NAFまたは前記DASHプロキシは、さらに、
前記DASHコンテンツ情報に対するNAF鍵マテリアル(Ks_NAF)を含んでいるブートストラップサーバーファンクション(BSF)からコンテンツ鍵を取得する、
ように構成されている、
請求項2に記載のD−NAF。 - 前記D−NAFは、さらに、
DASHコンテンツに対するDASHサービスプロバイダからDASH特定認証ポリシを受け取り、かつ、
ブートストラップサーバーファンクション(BSF)またはホーム加入者サブシステム(HSS)を介する汎用認証アーキテクチャベース(GAA−based)認証プロシージャをオーバーライドする、
ように構成されている、
請求項2に記載のD−NAF。 - 前記DASHプロキシまたは前記NAFは、さらに、
DASHコンテンツのDASHサービスプロバイダからDASH特定認証ポリシを受け取り、
前記DASH特定認証ポリシをユーザ認証ポリシの中に組み入れ、
前記DASH特定認証ポリシ、および、前記DASHコンテンツ情報とクライアント認証のための前記ユーザ認証ポリシの両方を実施することにより、前記DASHコンテンツへのクライアントのアクセスを承認し、かつ、
DASH MPDにおいて実施された認証ポリシを示す、
ように構成されている、
請求項1に記載のD−NAF。 - 前記D−NAFは、前記DASHサービスプロバイダのためのオペレータネットワーク認証を提供する、
請求項7に記載のD−NAF。 - 前記D−NAFは、前記DASH MPDにおける前記DASHサービスプロバイダの認証ポリシを受け取る、
請求項7に記載のD−NAF。 - 前記DASHポリシは、さらに、
DASHコンテンツに対するDASH認証情報とメディア表現記述(MPD)メタデータファイルにおけるDASHコンテンツ情報ロケーションを受け取り、
前記DASH認証情報は、署名と認証鍵を含み、
前記DASHコンテンツ情報ロケーションは、DASHコンテンツ情報ユニフォームリソースロケータ(URL)を含み、
受け取った認証ポリシに基づいて、DASHコンテンツへのアクセスのために前記クライアントを承認し、かつ、
DASH MPDにおいて実施されたポリシを示す、
ように構成されている、
請求項1に記載のD−NAF。 - 前記DASHプロキシは、さらに、
前記DASHコンテンツURLと前記認証鍵に基づいて、URL署名を計算し、かつ、
ローカルに計算された前記URL署名が、受け取った署名と一致しない場合に前記DASHコンテンツを拒否する、
ように構成されている、
請求項10に記載のD−NAF。 - 前記D−NAFは、ネットワークエレメント上でホストされている、
請求項1に記載のD−NAF。 - ハイパーテキストトランスファープロトコル(HTTP)プロキシまたはダイナミックアダプティブストリーミングオーバーHTTP(DASH)プロキシを使用して、コンテンツ特定認証を提供する方法であって、
クライアントに対するユーザ認証ポリシを受け取るステップと、
DASHサービスプロバイダからDASHコンテンツに対するコンテンツ特定認証ポリシを受け取るステップと、
前記ユーザ認証ポリシ、および、ネットワークエレメント上のHTTPプロキシまたはDASHプロキシでの前記コンテンツ特定認証ポリシに基づいて、前記DASHコンテンツへのアクセスのために前記クライアントを承認するステップと、
DASH MPDにおいて実施された認証ポリシを示すステップと、
を含む、方法。 - 前記DASHコンテンツへのアクセスのために前記クライアントを承認するステップは、さらに、
コンテンツ特定認証ポリシ情報を含んでいる、DASHコンテンツ情報に対するDASHメディア表現記述(MPD)メタデータファイルをパースするステップと、
あらゆるネットワークベースユーザ認証ポリシを含むように前記MPDを変更するステップと、
を含む、請求項13に記載の方法。 - 前記DASHコンテンツへのアクセスのために前記クライアントを承認するステップは、さらに、
DASHコンテンツ情報に対するDASH認証情報および前記MPDメタデータファイルにおけるDASHコンテンツ情報アドレスを受け取るステップであり、
前記DASH認証情報は、受け取ったユニフォームリソースロケータ(URL)署名とURL認証鍵を含み、かつ、
前記DASHコンテンツ情報ロケーションは、DASHコンテンツ情報URLを含む、ステップと、
受け取った前記認証ポリシに基づいて、DASHコンテンツへのアクセスのために前記クライアントを承認するステップと、
を含む、請求項14に記載の方法。 - 前記DASHコンテンツへのアクセスのために前記クライアントを承認するステップは、さらに、
前記DASHコンテンツ情報URLと前記認証鍵に基づいて、URL署名をローカルに計算するステップと、
前記ローカルに計算されたURL署名が前記受け取ったURLと一致しない場合に、前記DASHコンテンツを破棄するステップと、
を含む、請求項15に記載の方法。 - 前記DASHコンテンツへのアクセスのために前記クライアントを承認するステップは、さらに、
前記DASHコンテンツ情報に対するNAF鍵マテリアル(Ks_NAF)を含むブートストラップサーバーファンクション(BSF)からコンテンツ鍵を取得するステップと、
を含む、請求項13に記載の方法。 - 前記DASHコンテンツへのアクセスのために前記クライアントを承認するステップは、さらに、
既定の条件に基づいて、ユーザ認証を無効にするステップであり、
前記ユーザ認証は、ブートストラップサーバーファンクション(BSF)またはホーム加入者サブシステム(HSS)を介する汎用認証アーキテクチャベース(GAA−based)認証プロシージャを含む、ステップと、
を含む、請求項13に記載の方法。 - マシンによって実行されると、請求項13に記載の方法を実施するように適合された複数のインストラクションを含む、
少なくとも一つの固定のマシンで読取り可能な記録媒体。 - ダイナミックアダプティブストリーミング・オーバー・ハイパーテキストトランスファープロトコル(HTTP)アウェア(DASH−aware)ネットワークアプリケーションファンクション(D−NAF)において、
ユーザ認証ポリシ、および、DASHコンテンツに対するコンテンツ特定認証ポリシに基づいて、前記DASHコンテンツへのアクセスのためにクライアントを承認し、かつ、
DASH MPDにおいて実施された認証ポリシを示す、
ように構成されている、コンピュータ回路。 - 前記コンピュータ回路は、さらに、
前記クライアントに対するユーザ認証ポリシを受け取り、かつ、
コンテンツサービスプロバイダからDASHコンテンツに対する前記コンテンツ特定認証ポリシを受け取る、
ように構成されている、
請求項20に記載のコンピュータ回路。 - 前記コンピュータ回路は、前記DASHコンテンツへのアクセスのために前記クライアントを承認するように構成されており、さらに、
コンテンツ特定認証ポリシ情報を含んでいる、DASHコンテンツ情報に対するDASHメディア表現記述(MPD)メタデータファイルをパースし、かつ、
あらゆるネットワークベースユーザ認証ポリシを含むように前記MPDを変更する、
ように構成されている、
請求項20に記載のコンピュータ回路。 - 前記コンピュータ回路は、前記DASHコンテンツへのアクセスのために前記クライアントを承認するように構成されており、さらに、
DASHコンテンツ情報に対するDASH認証情報および前記MPDメタデータファイルにおけるDASHコンテンツ情報アドレスを受け取り、
前記DASH認証情報は、受け取ったユニフォームリソースロケータ(URL)署名とURL認証鍵を含み、かつ、
前記DASHコンテンツ情報アドレスは、DASHコンテンツ情報URLを含み、かつ、
受け取った前記認証ポリシに基づいて、DASHコンテンツへのアクセスのために前記クライアントを承認する、
ように構成されている、
請求項22に記載のコンピュータ回路。 - 前記コンピュータ回路は、前記DASHコンテンツへのアクセスのために前記クライアントを承認するように構成されており、さらに、
前記DASHコンテンツ情報URLと認証鍵に基づいて、URL署名を計算し、かつ、
ローカルに計算された前記URL署名が受け取ったURLと一致しない場合に、前記DASHコンテンツを拒否する、
ように構成されている、
請求項20に記載のコンピュータ回路。 - 前記クライアントは、
モバイルターミナル(MT)、ユーザ機器(UE)、または、モバイルステーション(MS)、を含むクライアント機器、を含み、
前記クライアント機器は、アンテナ、カメラ、タッチ感応ディスプレイスクリーン、スピーカ、マイクロフォン、グラフィックプロセッサ、アプリケーションプロセッサ、内部メモリ、または、不揮発性メモリポート、を含む、
請求項20に記載のコンピュータ回路。
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US20180069856A1 (en) | 2018-03-08 |
JP6151798B2 (ja) | 2017-06-21 |
US10873579B2 (en) | 2020-12-22 |
WO2014113193A1 (en) | 2014-07-24 |
EP2946539A4 (en) | 2016-10-12 |
JP6479888B2 (ja) | 2019-03-06 |
JP2017184260A (ja) | 2017-10-05 |
EP2946539A1 (en) | 2015-11-25 |
US9906526B2 (en) | 2018-02-27 |
US20150326572A1 (en) | 2015-11-12 |
CN104854835A (zh) | 2015-08-19 |
CN104854835B (zh) | 2018-07-06 |
EP2946539B1 (en) | 2020-09-02 |
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