JP4303226B2 - 無線通信システムのパケットデータ収斂プロトコル構造(pdcp)およびその方法 - Google Patents
無線通信システムのパケットデータ収斂プロトコル構造(pdcp)およびその方法 Download PDFInfo
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- JP4303226B2 JP4303226B2 JP2005199247A JP2005199247A JP4303226B2 JP 4303226 B2 JP4303226 B2 JP 4303226B2 JP 2005199247 A JP2005199247 A JP 2005199247A JP 2005199247 A JP2005199247 A JP 2005199247A JP 4303226 B2 JP4303226 B2 JP 4303226B2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/10—Reselecting an access point controller
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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
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/04—Protocols for data compression, e.g. ROHC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/22—Interfaces between hierarchically similar devices between access point controllers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
- Communication Control (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
Description
System for Mobile Communication)を基盤に開発されている。また、前記UTMSでは、音声、映像およびデータのようなマルチメディアサービスを提供し得る第3世代移動通信システムも共同に開発している。
Convergence Protocol:PDCP)階層、無線リンク制御(Radio Link Control:RLC)階層、媒体接続制御(Medium Access Control layer:MAC)があって、開放型システム相互接続技術の第1階層として作用する物理階層(L1)がある。また、C−Planeは、無線資源制御(Radio Resource Control:RRC)階層、RLC階層、MAC階層およびL1階層に構成される。
Data Unit:SDU)の分割および再組立機能を遂行する。前記RLC SDUは、RLC階層で大きさが調節された後、ヘッダーが付着されてプロトコルデータユニット(Protocol Data Unit:PDU)形態に変換されるが、該変換されたPDUは、MAC階層に伝送される。
PDU(Protocol Data Unit)にカプセル化されてUTRANのRNCに伝送され、UTRAN RNCのGTP−U階層は、伝送されたGTP−U PDUを解除(Decapsulate)してパケットデータを抽出する。一般に、GTP−U階層は、順次(in−sequence)および信頼性のある(reliable)伝達(delivery)のためにGTPヘッダーにGTP−U一連番号(Sequence Number)を付着した後、GTP−U PDUを伝送する。
PDUのために使用されたヘッダー圧縮タイプをPIDフィールドを通して通知する。前記PDUタイプフィールドは、該当PDUがPDCPデータPDUであるか、または、後述するPDCP SeqNum PDUであるかを通知する。三つ目に、PDCP SeqNum PDUは、PDCPデータPDUが一連番号と一緒に伝送される時に使用される。前記PDCP SeqNum PDUは、送信/受信側PDCPエンティティーのPDCP PDUの各SNが相互同期が合わない場合に、送信側SSN(Send Sequence Number)と受信側RSN(Receive Sequence Number)を一致させるために発送される。この時、前記RSNは、次の予想一連番号に該当され、前記SSNは、一番目の未発送一連番号に該当する。このように、SeqNum PDUを伝送して各PDCPエンティティーのSNを一致させる過程をSN同期化過程という。
PDUがRLCからPDCPに伝送されるかまたは、RLC PDUを廃棄したという信号がRLCからPDCPに伝送される時に1ずつ増加する。また、一つのPDCP SeqNum PDUが伝送された時、前記送信SNは、前記PDUにより通知された値に更新される。
SSNとを比較して、次にUEに伝送されるPDCP SDUの一番目のDL
PDCP SNを決定する。
前記第2インターフェースは、GTP階層であることを特徴とする請求項15記載の無線網のパケットデータ伝送装置である。
SNを受信する。従って、PDCPは、UEに伝送される一番目のPDUの一連番号(SN)を分かることができるが、これは目標PDCPの送信側に該当して、受信側は、UEから初めて伝送される一番目のUL PDCP SNを分からなければならない。
RSNの有効範囲を分からないために発生して、前記のような場合に、モジュール比較の問題が発生する。
Claims (1)
- パケットデータサービスを提供する方法であって、
ターゲットネットワークエンティティに伝送された未確認データユニットの一連番号(SN)間にギャップが存在することを認識することと、
該パケットデータサービスに対するパケットデータの損失を避けるために該認識されたギャップを処理することであって、該未確認データユニットは、未確認サービスデータユニット(SDU)であり、該認識されたギャップは、該認識されたギャップにおいてギャッププロトコルデータユニット(PDU)を生成することによって処理され、該ギャップPDUは、情報なしで生成される、ことと、
該ギャップの前および後の未確認SDUのPDUに対しては第1のPDUフォーマットを用いて該未確認データユニットを該ターゲットネットワークエンティティに伝送し、該ギャップにおける該ギャップPDUに対しては第2のPDUフォーマットを用いて該未確認データユニットを該ターゲットネットワークエンティティに伝送することと
を包含し、該第1のPDUフォーマットは、2オクテットを有し、該第2のPDUフォーマットは、1オクテットを有し、該生成されたギャップPDUが伝送されるときに一連番号同期化プロセスは実行されない、方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20010040877A KR100595583B1 (ko) | 2001-07-09 | 2001-07-09 | 이동통신시스템에서 핸드오버에 따른 패킷 데이터 전송 방법 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2002200529A Division JP4297655B2 (ja) | 2001-07-09 | 2002-07-09 | 無線通信システムのパケットデータ収斂プロトコル構造(pdcp)およびその方法 |
Publications (2)
Publication Number | Publication Date |
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JP2006005949A JP2006005949A (ja) | 2006-01-05 |
JP4303226B2 true JP4303226B2 (ja) | 2009-07-29 |
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JP2002200529A Expired - Lifetime JP4297655B2 (ja) | 2001-07-09 | 2002-07-09 | 無線通信システムのパケットデータ収斂プロトコル構造(pdcp)およびその方法 |
JP2005199247A Expired - Fee Related JP4303226B2 (ja) | 2001-07-09 | 2005-07-07 | 無線通信システムのパケットデータ収斂プロトコル構造(pdcp)およびその方法 |
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JP2002200529A Expired - Lifetime JP4297655B2 (ja) | 2001-07-09 | 2002-07-09 | 無線通信システムのパケットデータ収斂プロトコル構造(pdcp)およびその方法 |
Country Status (7)
Country | Link |
---|---|
US (2) | US7327734B2 (ja) |
EP (1) | EP1276293B1 (ja) |
JP (2) | JP4297655B2 (ja) |
KR (1) | KR100595583B1 (ja) |
CN (1) | CN1210971C (ja) |
AT (1) | ATE503333T1 (ja) |
DE (1) | DE60239507D1 (ja) |
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EP1276293A3 (en) | 2004-03-17 |
ATE503333T1 (de) | 2011-04-15 |
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EP1276293A2 (en) | 2003-01-15 |
US20080037548A1 (en) | 2008-02-14 |
EP1276293B1 (en) | 2011-03-23 |
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JP2006005949A (ja) | 2006-01-05 |
CN1210971C (zh) | 2005-07-13 |
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