JP2007143142A - 無線ネットワークにおけるデータ伝送方法及び装置 - Google Patents
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- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1874—Buffer management
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- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1887—Scheduling and prioritising arrangements
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
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Abstract
【解決手段】 無線ネットワークにおけるデータ伝送方法及び装置が提供される。
本発明の一実施形態による無線ネットワークにおけるデータ伝送方法は、無線ネットワークに伝送するデータを所定単位別にエンコーディングして前記伝送するデータのエラーを復旧するための情報が付加された送信データを提供する段階、前記送信データを前記無線ネットワークに送信する段階、前記送信データの伝送成功率を計算する段階及び前記伝送成功率が所定臨界値以上であるか否かによって前記送信データの伝送を制御する段階を含む。
【選択図】 図1
Description
120 フレーム分類部
130 ビデオデータ処理部
131 エンコーダ
132 インターリーバ
133 伝送パケッタイザ
140 送信部
150 計算部
160 判断部
170 保存部
400 ビデオ受信装置
420 パケット整列部
431 デパケッタイザ
432 デインターリーバ
433 デコーダ
440 出力部
Claims (22)
- 無線ネットワークに伝送するデータを所定単位別にエンコーディングして前記伝送するデータのエラーを復旧するための情報が付加された送信データを提供する段階と、
前記送信データを前記無線ネットワークに送信する段階と、
前記送信データの伝送成功可否によって伝送成功率を計算する段階と、
前記伝送成功率が所定臨界値以上であるか否かによって前記送信データの伝送を制御する段階とを含むことを特徴とする、データ伝送方法。 - 前記伝送するデータはビデオデータであって、
前記データにIフレーム、Pフレーム、Bフレームであるかを表示して前記データを分類する段階をさらに含むことを特徴とする請求項1に記載のデータ伝送方法。 - 前記提供する段階は、FECエンコーディングを行う段階を含むことを特徴とする請求項1に記載のデータ伝送方法。
- 前記提供する段階は、前記送信データをインターリービングする段階を含むことを特徴とする請求項1に記載の、データ伝送方法。
- 前記計算する段階は、
前記送信データの中で伝送に失敗したデータがある場合、前記送信データの伝送失敗率を計算する段階と、
前記伝送に失敗したデータを保存する段階とを含むことを特徴とする請求項1に記載のデータ伝送方法。 - 前記保存する段階は、
前記伝送失敗率が前記送信データのエラー復旧率より小さい場合に、前記伝送に失敗したデータを廃棄する段階を含むことを特徴とする請求項5に記載のデータ伝送方法。 - 前記臨界値は前記送信データのエラー復旧率により決定されることを特徴とする請求項1に記載のデータ伝送方法。
- 前記制御する段階は、
前記伝送成功率が前記臨界値以上である場合、前記送信データの中で未伝送されたデータの伝送を中止する段階を含むことを特徴とする請求項1に記載のデータ伝送方法。 - 前記制御する段階は、
前記伝送成功率が前記臨界値以下である場合、前記送信データの伝送完了可否を判断する段階と、
前記判断結果によって、前記送信データの中で伝送に失敗したデータを再伝送する段階とを含むことを特徴とする請求項1に記載のデータ伝送方法。 - 前記再伝送する段階は、前記伝送に失敗したデータの伝送速度を減少させる段階を含むことを特徴とする請求項9に記載のデータ伝送方法。
- 前記再伝送する段階は、前記再伝送されたデータによる前記送信データの伝送成功率が前記臨界値以上であるか否かによって前記伝送に失敗したデータの再伝送を制御する段階を含むことを特徴とする請求項9に記載のデータ伝送方法。
- 無線ネットワークに伝送するデータを所定単位別にエンコーディングして前記伝送するデータのエラーを復旧するための情報が付加された送信データを提供するビデオデータ処理部と、
前記送信データを前記無線ネットワークに送信する送信部と、
前記送信データの伝送成功率を計算する計算部と、
前記伝送成功率が所定臨界値以上であるか否かによって前記送信データの伝送を制御する判断部を含むことを特徴とするデータ伝送装置。 - 前記伝送するデータはビデオデータであって、
前記データにIフレーム、Pフレーム、Bフレームであるかを表示して前記データを分類するフレーム分類部をさらに含むことを特徴とする請求項12に記載のデータ伝送装置。 - 前記ビデオデータ処理部はFECエンコーディングを行うことを特徴とする請求項12に記載のデータ伝送装置。
- 前記ビデオデータ処理部は前記エンコーディングした送信データをインターリービングすることを特徴とする請求項12に記載のデータ伝送装置。
- 前記送信データの中で伝送に失敗したデータを保存する保存部をさらに含み、前記計算部は、前記送信データの伝送失敗率を計算することを特徴とする請求項12に記載のデータ伝送装置。
- 前記判断部は、前記伝送失敗率と前記送信データのエラー復旧率を比較した結果、前記伝送失敗率が前記送信データの前記エラー復旧率より小さい場合に、前記伝送に失敗したデータを廃棄することを特徴とする請求項16に記載のデータ伝送装置。
- 前記臨界値は前記送信データのエラー復旧率により決定されることを特徴とする請求項12に記載のデータ伝送装置。
- 前記判断部は、前記伝送成功率が前記臨界値以上である場合、前記送信データの中で未伝送されたデータの伝送を中止することを特徴とする請求項12に記載のデータ伝送装置。
- 前記判断部は、前記伝送成功率が前記臨界値以下である場合、前記送信データの伝送完了可否を判断して、前記判断結果によって前記送信データの中で伝送に失敗したデータを再伝送することを特徴とする請求項12に記載のデータ伝送装置。
- 前記判断部は、前記伝送に失敗したデータの伝送速度を減少させることを特徴とする請求項20に記載の、データ伝送装置。
- 前記判断部は、前記再伝送されたデータによる前記送信データの伝送成功率が前記臨界値以上であるか否かによって前記伝送に失敗したデータの再伝送を制御することを特徴とする請求項20に記載のデータ伝送装置。
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EP1786135A1 (en) | 2007-05-16 |
US8335516B2 (en) | 2012-12-18 |
EP1786135B1 (en) | 2008-08-27 |
CN1976479A (zh) | 2007-06-06 |
JP4611274B2 (ja) | 2011-01-12 |
US20070124626A1 (en) | 2007-05-31 |
KR100746013B1 (ko) | 2007-08-06 |
CN100563345C (zh) | 2009-11-25 |
DE602006002471D1 (de) | 2008-10-09 |
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