TW552783B - Method for multimedia communication over packet channels - Google Patents
Method for multimedia communication over packet channels Download PDFInfo
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- TW552783B TW552783B TW090131700A TW90131700A TW552783B TW 552783 B TW552783 B TW 552783B TW 090131700 A TW090131700 A TW 090131700A TW 90131700 A TW90131700 A TW 90131700A TW 552783 B TW552783 B TW 552783B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- 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
- H04L1/1607—Details of the supervisory signal
- H04L1/1621—Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- 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
- H04L1/1607—Details of the supervisory signal
- H04L1/1657—Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- 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
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L2001/125—Arrangements for preventing errors in the return channel
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
- Mobile Radio Communication Systems (AREA)
- Error Detection And Correction (AREA)
Description
) 五、發明説明(5 =二數時發出。後者常數之決定可提供正確解碼之理想或 然率,每一 T〇rnad〇碼之決定係由電腦模擬實施。如所有資 料封包無誤到達,解碼則不需要,資料可直接發至用戶應 用。 β數個其他收訖機構可相容於此系統。收訖封包包括(:(}〇1) 號碼,但亦可含額外資訊。冑外資訊可能以對服務器控制 訊息之形式,通道統計數字或/及其他資訊。在返回通道誤 差足情況下,如封包擦拭,發射機只需發出算法允許之封 包取大數目,並繼續至次一G0P。如所有奇偶已發出,資 料仍不能解碼,發射機繼續至次一 G〇p。在一利用延遲敏 感多媒體資訊之實施例中,發送時間有其上限,故建議之 解決方案可予使用,而並未增加一額外誤差解決機構。一 實施例可限定一較高位準誤差解決方案協定。本申請亦可 對付不可恢復之通道誤差情勢。 在:實施例中,此處所說明之建議方法及裝置可應用在 視頻流IEEE 802.1 1無線LAN。在UDP位準,如—物理層 收汔 < 發射係供已被抑制之UDP通信量,IEEE 8〇2 u網 路作為-包封擦拭通道。在-實施财,自行動接收機之 物理層再發射及收訖由視頻流應用中之多信道廣播1?位址 所抑制。UDP連接自發射機至接收機為資料通信量保持, 及自接收機至發射機為收乾保持。〜 在一實施例中,通信通道輪廓必須考慮FEC參數(資料封 包數目及CGOP中之奇偶封包數目),及上述之方法及裝置 之其他特性。在-實施例中,—CG〇p尺寸及奇偶封包之數 -8 - 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公爱) 552783
目’必須選擇,俾在CGOP之長度上封包擦拭之整數,有可 能為小於奇偶封包數目(RS編碼)或小於奇偶封包數目乘以 大於一整數之預定常數(T〇 rn ad〇編碼)。 在一實施例中,上述之方法及裝置可供多媒體資料流在 無線IP網路上使用,自流服務器至接收裝置。例如,一實 施例可提供具有誤差彈性及降低時間等待之15>網路,以改 進在資料流裝置中資料之適當回放。 一實施例亦可用於與媒體回放機構介面。例如,一實施 例可用Intel®媒體處理圖書館架構,俾堅固封包流與回放 機構可無缝統合。 圖3顯示供在UDP輸送協定之IP網路上之流多媒體資料之 實施例之方塊圖。多媒體資料310由音頻及/或視頻資料組 成,並以壓縮或未壓縮形式儲存在服務器3 2〇中。應用程式 介面(API)321用以將媒體資料編碼或自動譯碼,並儲存^ 内部編碼器緩衝器322中。在-實施例中,編碼器可能符合 屯矽專豕組(MPEG)或其他視頻及音頻編碼標準。在一實施 例中,API提供封包化及具有壓縮流首頁位置之fec編碼段 323。在一實施例中,封包化器及FEC建立資料封包及奇偶 封包。多媒體資料可以非順序次序予以封包化。或者,可 用不同FECs供不同多媒體資料扇段。反之,某些媒體㈣ 可不包括在資料封包内。封包化資料及奇偶儲存在内部封 包緩衝H324。紹提供與編碼器緩衝器相似之管理功卜 特別是,輸入/輸出_)段325能以封包基礎,隨機存^封 包缓衝器中之資料。ΑΡΙ亦提供其他關於#包内容之額外資
裝 訂
-9- 552783 A7 B7 五、發明説明(7 料,該資料為I/O所需。I/O段之功能為在Ip網路上實施封 包傳送,及提供服務器與客戶間ACK傳輸之控制鏈路。I/O 可發出封包數次,自傳輸緩衝器中刪除封包,或隨意排定 封包傳送至代表IP網路330之封包API。代表服務器之三主 要段由中央較高位準程序326控制,其利用八!>15設定三組 件之可變參數,及管理段與資料緩衝器間之資料流通。 在客戶侧340,自IP網路之資料由1/〇段341收到並送至 封包緩衝器342。I/O段亦負貴在客戶控制程序343方向, 發出ACKs至服務器侧。i/Q亦可用以發出其他控制資訊至 服務器側。除封包及FEC解碼段344處理自封包緩衝器342 之貝料除封包及FEC解碼段負貴改正封包擦拭,並提出 可由入解碼#又處理型式之多媒體加碼資料。壓縮之多媒 體資料送至API 345經解碼緩衝器346作解碼程序。Αρι將 多媒體資料除壓縮並輸出至顯示器35〇。客戶控制343管理 資料在所述之三段間之流通,控制ACK及其他至接收機之 通信。 上述之方法可儲存於電腦系統之記憶體内(即桌上各,視 頻記錄器)作為待執行之—㈣日Ί外,實施此方^指 令耶可儲存於其他形式之機器可讀媒體,包㈣與光學磁 1例如本發明《方法可錯存於機器可讀之媒體,如磁 ,^碟’其可經磁碟機(電腦可,讀媒體驅動機)存取。此 指令可以編輯及鏈路型式,下載至資料網路上之計算 裝置。 或者’執仃上述方法之邏輯可在额外電腦及/或機器可讀 -10- 本紙银尺度適(摩297公着)- 552783 A7 B7 五、發明説明(8 ) 媒體中實施,如分立之硬體組件,如大規模積體電路 (LSI’s),特殊應用積體電路(ASIC’s),硬體,如電可擦拭 可程式僅讀記憶體(EEPROM’s);及電,光學,聲音及其 他形式傳播之信號(即載波,紅外線信號,數位信號等); 雖然本發明已參考特殊範例實施例說明,對此等實施例 可作不同之修改及改變而不致有悖本發明之範圍與精神, 甚為明顯。準此,規格與圖式僅為說明性,而無限制之 意。 -11 - 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐)
Claims (1)
- 552783. 松5肩 第翁〇abH7〇〇號專利申請案 年5 月)、申請專利範圍 K 一種傳輸資料封包之方法,包含· 施加前向誤差改正碼於一組 ,、科封包,以補充一组 可偶封包至一組資料封包, 政A ^ 遷互加碼組之封包; =射'貝料封包,以資科封包 應奇偶封包; 铋耵組對 接收一正收訖信號;為響應接收收訖’停止發出額外之奇偶封包;及 為響應未接收收訖,繼續發射奇偶封包。, 2.如申請專利範圍第”員之方法,其中之資料封包 媒體資料封包,發射包括在H網路上發射。 3·專利範圍第2項之方法,其中,發射多媒體資 $包包括在一網際網路協定(Ιρ)網路上發射之多媒 4.如申請專利範圍第3項之方法,其中之多媒體流包括 IEEE 802.1 1標準在無線網路之流。 5· ^申請專利範圍第4項之方法,其中之多媒體流包括 多信运廣播IP位址抑制物理層收訖。 6·如申請專利範圍第!項之方法,其中,施加—前向誤 改正碼包括施加一 Reed_Solomon碼至資料封包。 7·如申請專利範圍第1項之方法,其中,施加一前向誤 改正碼包括施加一 Tornado碼至資料封包。 8.如申請專利範圍第丨項之方法,其中,發射封包組包括 内插及發射一第二及獨立資料封包組。 9·如申請專利範圍第1項之方法,其中,為一組封包 裝 料 體 經 經 差 差 接 η O:\75\75185-920530DOC\ 本紙張尺度適用+國國家標準(CNS) Μ規格(21〇 χ 297公董) 5 ο收機發出多收訖信號。 10·如申請專利範圍第丨項之方 〜 Μ 、 向包括操縱奇偶封包之 數目以響應含於收訖内之資料。 11· 一種機器可讀取儲存媒體,確實 器執行之指令以實施一方法,崔含實包括一順序可由處理 ,加-前向誤差改正碼於―組資料封包,補充一且 可偶封包至-組資料封包以建立加碼之封包組; 發射資料封包,及在發出資料 應奇偶封包; ㈣包後,發射-組對 接收一正收訖信號; 響應接收-收乾信號’停止發出額外奇偶封包;及 響應未接收收訖信號,繼序發射奇偶封包。 a如申請專利範圍第η項之機器可讀取儲存媒體,盆中 之資料封包包含多媒體資料封包,及發射包括在無線 網路上發射。 13·如申請專利範圍第12項之機器可讀取儲存媒體,其中 之發射多媒體資料封包,包括在網際網路協定(ιρ)網路 上發射之多媒體流。 1 4 ·如申請專利範圍第丨3項之機器可讀取儲存媒體,其 中’多媒體流包括在無線網路上經IEEE 8〇211標準發 射之流。 1 5 ·如申請專利範圍第丨4項之機器可讀取儲存媒體,其 中’多媒體流包括經多信道廣播I p位址抑制物理層收 訖0 -2 - O:\75\75185-920530DOC\ 5 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 552781,. 月曰 修正 魅 A8 B8 C8 D8 六、平哥專利範圍 16 ·如申請專利範圍第11項之機器可讀取儲存媒體,其 中,供應一前向向誤差改正碼包括,供應一 Reed-Solomon碼至資料封包。 1 7 ·如申i專利範圍第丨1項之機器可讀取儲存媒體,其 中,供應一前向誤差改正碼包括,供應_Tornado碼至 貨料封包。 1 8 ·如申請專利範圍第丨i項之機器可讀取之儲存媒體,其 中,發射一組封包包括,内插及發射第二及獨立組资 料封包。 、” 19. 如申請專利範圍第11項之機器可讀取之儲存媒體,其 中’接收機為一組封包發出多個收乾信號。 20. 如申請專利範圍第u項之機器可讀取之儲存媒體,進 一步包含操縱數奇偶封包以響應含於收訖中之資料。 21 _ —種傳輸資料封包之系統,包括: 一加碼器以施加前向誤差改正碼於一組資料封包, 補充一組奇偶封包至該組資料封包以建立一加碼之封 包組; 一發射機,以在網路上發射資料封包至接收機,及 發射一組對應奇偶封包; 一接收機,以接收正收訖信號,其中,為響應接收 收心仏號,發射機停止發射額外之奇偶封包,為變廡 未收到收訖信號,發射機繼續發射奇偶封包。 ^ 22·如申請專利範圍第21項之系統,其中,發射機在一網 際網路協定(IP )網路上流動多媒體資料封包。 O:\75\75185-920530 D〇C\ 5 _ ^ _5¾7 ϋ 月曰 補充 Α8 Β8 C8 D8申請專利範園 23. 如申請專利範圍第22項之系.统,其中,發射機在無線 網路上以IEEE 802.1 1標準流動多媒體資料封包。 24. 如申請專利範圍第22項之系統’其中,發射^經多信 道廣播IP位址抑制物理層收訖。 25. 如申請專利範圍第21項之系統,其中,加碼器施加一 Reed-Solomon碼至資料封包。 26. 如申請專利範圍第21項之系統,其中,加碼器施加一 Tornado碼至資料封包。 27. 如中請專利範圍第21項之线’其中,發射機以資料 封包組,内插一第二及獨立組資料封包。 -4- O:\75\75185-920530 DOC\ 5 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) ' -----
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US09/746,486 US7095729B2 (en) | 2000-12-22 | 2000-12-22 | Method for multimedia communication over packet channels |
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US (1) | US7095729B2 (zh) |
EP (1) | EP1346578B1 (zh) |
JP (1) | JP4002183B2 (zh) |
KR (1) | KR100554062B1 (zh) |
CN (1) | CN100375538C (zh) |
AT (1) | ATE340483T1 (zh) |
AU (1) | AU2002217993A1 (zh) |
DE (1) | DE60123280T2 (zh) |
DK (1) | DK1346578T3 (zh) |
TW (1) | TW552783B (zh) |
WO (1) | WO2002052862A2 (zh) |
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TWI561033B (en) * | 2013-12-17 | 2016-12-01 | Qualcomm Inc | Packet number determination mechanism |
TWI700898B (zh) * | 2009-11-13 | 2020-08-01 | 美商松下電器(美國)知識產權公司 | 解碼裝置、接收裝置、編碼方法及接收方法 |
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US7095729B2 (en) | 2000-12-22 | 2006-08-22 | Intel Corporation | Method for multimedia communication over packet channels |
GB0110125D0 (en) * | 2001-04-25 | 2001-06-20 | Koninkl Philips Electronics Nv | Radio communication system |
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US20070074269A1 (en) * | 2002-02-22 | 2007-03-29 | Hai Hua | Video processing device, video recorder/playback module, and methods for use therewith |
US7584404B2 (en) * | 2002-12-19 | 2009-09-01 | Intel Corporation | Method and apparatus for multimedia communication over packet channels |
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WO2002052862A3 (en) | 2003-01-30 |
ATE340483T1 (de) | 2006-10-15 |
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AU2002217993A1 (en) | 2002-07-08 |
CN100375538C (zh) | 2008-03-12 |
WO2002052862A2 (en) | 2002-07-04 |
JP2004517534A (ja) | 2004-06-10 |
CN1483289A (zh) | 2004-03-17 |
EP1346578B1 (en) | 2006-09-20 |
KR100554062B1 (ko) | 2006-02-22 |
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