WO2003028280A2 - Verfahren und funkstation zur datenübertragung in einem funk-kommunikationssystem - Google Patents
Verfahren und funkstation zur datenübertragung in einem funk-kommunikationssystem Download PDFInfo
- Publication number
- WO2003028280A2 WO2003028280A2 PCT/DE2002/003590 DE0203590W WO03028280A2 WO 2003028280 A2 WO2003028280 A2 WO 2003028280A2 DE 0203590 W DE0203590 W DE 0203590W WO 03028280 A2 WO03028280 A2 WO 03028280A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radio
- data packet
- transmission
- data
- communication system
- Prior art date
Links
Classifications
-
- 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
-
- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
-
- 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
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
-
- 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
-
- 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
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1887—Scheduling and prioritising arrangements
-
- 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
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0093—Point-to-multipoint
Definitions
- the invention relates to a method and a radio station for data transmission in a radio communication system, in particular in a mobile radio system.
- Radio communication systems are known in the form of mobile radio systems and wireless subscriber access networks, also known as wireless local area networks (LAN).
- State-of-the-art mobile radio systems are, for example, the second generation GSM system (Global System for Mobile Communications) which is used worldwide and the future UMTS system (Universal Mobile Telecommunications System) of the third generation. These systems operate in frequency bands around 1 and 2 GHz and use a TDMA (Time Division Multiple Access) or CDMA (Code Division Multiple Access) subscriber separation method.
- Future WLAN systems are, for example, the Hiperlan / 2 standardized by the ETSI (European Telecommunications Standards Institute) and the IEEE 802.11 standardized by the IEEE.
- Both systems use an OFDM (Orthogonal Frequency Division Multiplex) transmission method with 64 subcarriers in the 5 GHz frequency band.
- OFDM Orthogonal Frequency Division Multiplex
- Access Points a radio-based high-speed access with a typical data rate of 27 Mbit / s to various networks, such as UMTS core networks, ATM networks and IP-based networks. It also becomes a possible one Mobility of the subscriber stations Mobile terminals (MT), are supported in the handover process, ie a handover from one access point to the next.
- MT Mobile terminals
- radio communication systems for so-called unicast connections i.e. Point-to-point connections between two radio stations, mostly combinations of a forward error correction (FEC Forward Error Correction) and ARQ (Automatic Repeat Request) procedure, are used to contribute to a required quality of service (QoS Quality of Service) or residual error probability to ensure the transfer.
- FEC Forward Error Correction forward error correction
- ARQ Automatic Repeat Request
- correctly received data packets are confirmed by positive acknowledgments (ACK Acknowledgment), and incorrectly received data packets by a negative acknowledgment (NAK Negative Acknowledgment) in a signaling data unit (S-PDU Signaling Packet Data Unit) for retransmission of the Recipient requested.
- ACK Acknowledgment positive acknowledgments
- NAK Negative Acknowledgment negative acknowledgment
- S-PDU Signaling Packet Data Unit Signaling Packet Data Unit
- the object of the invention is therefore to specify a method which enables secure transmission of data from a distribution service. This object is achieved by the features of the independent claims. Advantageous developments of the invention can be found in the dependent claims.
- a data packet is provided with a first error protection during a first transmission via the radio interface of the radio communication system.
- the data packet is provided with a second error protection, which has an increased redundancy compared to the first error protection.
- the increased redundancy during the further transmission advantageously ensures an increased probability of the correct receipt of the data packet at the location of the second radio stations, as a result of which use in a point-to-multipoint transmission appears advantageous.
- the energy consumption of the second radio station which is designed, for example, as a mobile radio station, can advantageously be reduced, since after successful reception of the first radio station, transmission of the data packet subsequent transmissions no longer have to be received and evaluated.
- the redundancy is increased according to an ARQ method with incremental
- the known type 2 ARQ method for example, is optimally adapted to the conditions of data transmission in distribution services.
- the implementation corresponds to an efficient ARQ process without using a return channel. Data packets that are not received or are corrupted are not explicitly requested by means of a negative confirmation, but negative confirmations are accepted on the transmitter side without actually being received.
- the ARQ method based on an incremental redundancy, it is not the same data packets that are transmitted several times, but rather different data packets, the information contained therein being able to be extracted from the first data packet.
- the exemplary type 2 ARQ method can advantageously be used to define coding rates of virtually any desired size and thus add more redundancy to a data packet than would be possible with the known FEC methods.
- the first and / or the second error protection are selected depending on the properties of the radio interface.
- more or less redundancy is added to the data packets, for example, and more or less further data packets may be added transmitted with incremental redundancy.
- good transmission properties for example, the number of further data packets is reduced, which advantageously increases the transmission capacity in the transmission channel.
- the respective difference or the stroke between the coding rates can also be set.
- the properties can be determined by the first radio station or a higher-level instance of the radio communication system, for example, from known signaling of the second radio station via the radio channel properties, requested by the second radio station via special signaling, or derived from received signals from the second radio station.
- the further transmission of the data packet with the second error protection takes place only after a certain time interval.
- the data packets are not transmitted in direct succession, but rather at different times, so that, for example, the fading effects of the radio channel can be advantageously used. If, for example, using an FEC method during a fading period, retransmission of the data packet under certain circumstances would not allow correct decoding, then one can
- the method according to the invention is used particularly advantageously in radio communication systems based on a TDD method (Time Division Duplex).
- TDD means that the transmission takes place in both upward and downward direction in a common transmission frame.
- Games for such systems are the Hiperlan / 2 and IEEE 802.11 system mentioned in the introduction.
- FIG. 1 shows a structure of a radio communication system in which the inventive method is carried out.
- a base station AP Access Point
- IP Internet protocol-based transmission network
- Network components connected and represents a so-called access point to this network for subscriber stations MT (Mobile Terminal) located in the radio coverage area of the base station AP.
- the transmission via the radio interface takes place in the downward direction DL (downlink) from the base station AP to the subscriber stations MT as well as in the upward direction UL (uplink) from the subscriber stations MT to the base station AP, and due to the variants, the properties of the radio interface are subject to interference due to fading, shadowing, interference, etc.
- the base station sends data packets dp (data packet) to the receiving subscriber stations MT in a distribution channel BCH (broadcast channel).
- data packets can, for example, signaling and / or user data from Services included.
- the base station AP transmits the data packets dp in the distribution channel BCH several times, with each further transmission increasing the error protection of the respective data packet dp by increasing the redundancy.
- the correct reception of the data packets dp is not confirmed by the receiving subscriber stations MT. Rather, the number of additionally transmitted data packets dp and the increment of redundancy are adapted by the base station AP to the current properties of the transmission channel.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/491,114 US20050044464A1 (en) | 2001-09-26 | 2002-09-23 | Method and radio station for data transmission in a radio communication system |
EP02776707A EP1430635B1 (de) | 2001-09-26 | 2002-09-23 | Verfahren und funkstation zur datenübertragung in einem funk-kommunikationssystem |
DE50208859T DE50208859D1 (de) | 2001-09-26 | 2002-09-23 | Verfahren und funkstation zur datenübertragung in einem funk-kommunikationssystem |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10147487A DE10147487B4 (de) | 2001-09-26 | 2001-09-26 | Verfahren und Funkstation zur Datenübertragung in einem Funk-Kommunikationssytem |
DE10147487.3 | 2001-09-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003028280A2 true WO2003028280A2 (de) | 2003-04-03 |
WO2003028280A3 WO2003028280A3 (de) | 2003-08-28 |
Family
ID=7700370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/003590 WO2003028280A2 (de) | 2001-09-26 | 2002-09-23 | Verfahren und funkstation zur datenübertragung in einem funk-kommunikationssystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050044464A1 (de) |
EP (1) | EP1430635B1 (de) |
AT (1) | ATE347202T1 (de) |
DE (2) | DE10147487B4 (de) |
WO (1) | WO2003028280A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE502004011313D1 (de) | 2003-09-29 | 2010-08-05 | Siemens Ag | Verfahren zum verbessern der qualität einer sprachübertragung über eine luftschnittstelle |
US7489650B2 (en) * | 2004-03-29 | 2009-02-10 | Intel Corporation | Method, apparatus and system of packet transmission |
KR100913872B1 (ko) * | 2006-01-18 | 2009-08-26 | 삼성전자주식회사 | 통신 시스템에서 데이터 송수신 장치 및 방법 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001037480A2 (en) * | 1999-11-16 | 2001-05-25 | Koninklijke Philips Electronics N.V. | Multicast transmission method and system |
US6278716B1 (en) * | 1998-03-23 | 2001-08-21 | University Of Massachusetts | Multicast with proactive forward error correction |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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US3984774A (en) * | 1959-01-14 | 1976-10-05 | The United States Of America As Represented By The Secretary Of The Navy | Antijam communications system |
US5671156A (en) * | 1995-03-31 | 1997-09-23 | Lucent Technologies Inc. | Transmission method and system for JPEG images |
US6353907B1 (en) * | 1997-10-29 | 2002-03-05 | At&T Corp. | Incremental redundancy radio link protocol |
US5870412A (en) * | 1997-12-12 | 1999-02-09 | 3Com Corporation | Forward error correction system for packet based real time media |
JP2912323B1 (ja) * | 1998-01-29 | 1999-06-28 | 日本放送協会 | デジタルデータの受信装置 |
US6144651A (en) * | 1998-07-17 | 2000-11-07 | Motorola, Inc. | Data transmission within a wireless communication system |
US7035214B1 (en) * | 1999-09-28 | 2006-04-25 | Nortel Networks Limited | System and method for a negative acknowledgement-based transmission control protocol |
US6275488B1 (en) * | 1999-11-17 | 2001-08-14 | Motorola, Inc. | Variable rate spread spectrum communication method and apparatus |
DE19959160B4 (de) * | 1999-12-08 | 2005-06-16 | Siemens Ag | Verfahren zur paketorientierten Datenübermittlung in einem Funk-Kommunikationssystem, Basisstation und Teilnehmerstation |
JP4884631B2 (ja) * | 2000-01-20 | 2012-02-29 | ノーテル・ネットワークス・リミテッド | 可変速度パケット・データ・アプリケーションでのソフト組合せを備えたハイブリッドarq方式 |
US20010040895A1 (en) * | 2000-03-16 | 2001-11-15 | Templin Fred Lambert | An IPv6-IPv4 compatibility aggregatable global unicast address format for incremental deployment of IPv6 nodes within IPv4 |
KR100407351B1 (ko) * | 2000-05-22 | 2003-11-28 | 삼성전자주식회사 | 복합 재전송형식을 사용하는 데이터 통신시스템의 데이터송수신장치 및 방법 |
DE10031675A1 (de) * | 2000-06-29 | 2002-01-17 | Siemens Ag | Verfahren zum gleichzeitigen Übertragen mehrerer Teildatenströme und Vorrichtung zum Korrigieren von Übertragungsfehlern |
US7206280B1 (en) * | 2000-09-12 | 2007-04-17 | Lucent Technologies Inc. | Method and apparatus for asynchronous incremental redundancy reception in a communication system |
-
2001
- 2001-09-26 DE DE10147487A patent/DE10147487B4/de not_active Expired - Fee Related
-
2002
- 2002-09-23 EP EP02776707A patent/EP1430635B1/de not_active Expired - Lifetime
- 2002-09-23 DE DE50208859T patent/DE50208859D1/de not_active Expired - Fee Related
- 2002-09-23 AT AT02776707T patent/ATE347202T1/de active
- 2002-09-23 WO PCT/DE2002/003590 patent/WO2003028280A2/de active IP Right Grant
- 2002-09-23 US US10/491,114 patent/US20050044464A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6278716B1 (en) * | 1998-03-23 | 2001-08-21 | University Of Massachusetts | Multicast with proactive forward error correction |
WO2001037480A2 (en) * | 1999-11-16 | 2001-05-25 | Koninklijke Philips Electronics N.V. | Multicast transmission method and system |
Non-Patent Citations (1)
Title |
---|
SHIOZAKI A: "ADAPTIVE TYPE-II HYBRID BROADCAST ARQ SYSTEM" IEEE TRANSACTIONS ON COMMUNICATIONS, IEEE INC. NEW YORK, US, Bd. 44, Nr. 4, 1. April 1996 (1996-04-01), Seiten 420-422, XP000587074 ISSN: 0090-6778 * |
Also Published As
Publication number | Publication date |
---|---|
DE10147487B4 (de) | 2006-02-09 |
DE10147487A1 (de) | 2003-04-30 |
WO2003028280A3 (de) | 2003-08-28 |
DE50208859D1 (de) | 2007-01-11 |
US20050044464A1 (en) | 2005-02-24 |
EP1430635B1 (de) | 2006-11-29 |
EP1430635A2 (de) | 2004-06-23 |
ATE347202T1 (de) | 2006-12-15 |
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