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WO2010011054A2 - Système de communication permettant de supprimer une perte d'efficacité due à la transmission - Google Patents

Système de communication permettant de supprimer une perte d'efficacité due à la transmission Download PDF

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Publication number
WO2010011054A2
WO2010011054A2 PCT/KR2009/003947 KR2009003947W WO2010011054A2 WO 2010011054 A2 WO2010011054 A2 WO 2010011054A2 KR 2009003947 W KR2009003947 W KR 2009003947W WO 2010011054 A2 WO2010011054 A2 WO 2010011054A2
Authority
WO
WIPO (PCT)
Prior art keywords
header
gtp
compressed
data
base station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2009/003947
Other languages
English (en)
Other versions
WO2010011054A3 (fr
Inventor
Kyoung Seok Lee
Jae Young Ahn
Jae Heung Kim
Yeong Jin Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electronics and Telecommunications Research Institute ETRI
Original Assignee
Electronics and Telecommunications Research Institute ETRI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020090062691A external-priority patent/KR101236033B1/ko
Application filed by Electronics and Telecommunications Research Institute ETRI filed Critical Electronics and Telecommunications Research Institute ETRI
Priority to US12/996,931 priority Critical patent/US20110090840A1/en
Publication of WO2010011054A2 publication Critical patent/WO2010011054A2/fr
Anticipated expiration legal-status Critical
Publication of WO2010011054A3 publication Critical patent/WO2010011054A3/fr
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

Definitions

  • the present invention relates to a technology that may decrease communication overhead in a communication system including a relay.
  • 3GPP 3 rd Generation Partnership Project
  • LTE Long Term Evolution
  • IMT International Mobile Telecommunication
  • ITU International Telecommunication Union
  • a mobile communication system generally includes a user terminal and a base station constituting a cell.
  • a plurality of terminals may transmit and receive packet data to and from the base station via a radio channel.
  • a scheme of wirelessly connecting the base station and a relay to enable the relay to relay communication signals between the terminal and the base station is being adopted.
  • the relay may perform a radio communication relay by receiving data via a radio channel, used in the mobile communication system, to transmit the received data via the radio channel.
  • the base station When the base station is wirelessly connected to a gateway of a heterogeneous communication network to thereby relay data, the base station may be defined as the relay.
  • An aspect of the present invention provides a technology that may decrease an amount of control information used to transmit data.
  • Another aspect of the present invention also provides a technology that may enhance a data transmission efficiency.
  • a base station including: a receiver to receive a General Packet Radio Service (GPRS) Tunneling Protocol (GTP) header and a data packet from a gateway; a header compression unit to compress the GTP header; and a transmitter to transmit the compressed GTP header and the data packet to a relay.
  • GPRS General Packet Radio Service
  • GTP General Packet Radio Service Tunneling Protocol
  • a relay including: a receiver to receive a data packet and a compressed GTP header from a base station; a header decompression unit to decompress the compressed GTP header; and a transmitter to transmit the data to a terminal using the decompressed GTP header.
  • a gateway including: a header compression unit to compress an IP header associated with data and a UDP/Real-time Transport Protocol (RTP) header associated with the data; and a transmitter to transmit the data, the compressed IP header, and the compressed UDP/RTP header to a base station.
  • the base station may forward the data, the compressed IP header, and the compressed UDP/RTP header to a relay.
  • RTP Real-time Transport Protocol
  • FIG. 1 is a diagram illustrating a configuration of a packet-based mobile communication system to transmit data using a relay according to an embodiment of the present invention
  • FIG. 2 is a diagram illustrating a structure of a data plane protocol according to an embodiment of the present invention
  • FIG. 3 is a diagram illustrating a format of a downlink packet where a header is compressed according to an embodiment of the present invention
  • FIG. 4 is a diagram illustrating a format of a downlink packet where a plurality of data packets are integrated according to an embodiment of the present invention
  • FIG. 5 is a block diagram illustrating a structure of a relay according to an embodiment of the present invention.
  • FIG. 6 is a block diagram illustrating a structure of a gateway according to an embodiment of the present invention.
  • FIG. 7 is a block diagram illustrating a structure of a base station according to an embodiment of the present invention.
  • FIG. 1 is a diagram illustrating a configuration of a packet-based mobile communication system to transmit data using a relay according to an embodiment of the present invention.
  • a gateway 110 may correspond to a contact point between an external network and a radio communication network including a base station 120, relays 130 and 131, and terminals 140 and 141.
  • the gateway 110 may receive data that the terminals 140 and 141 transmit to the external network via the base station 120 and the relays 130 and 131. Also, the gateway 110 may transmit, to the terminals 140 and 141 via the base station 120 and the relays 130 and 131, data that is received from the external network.
  • the base station 120 may transmit data to the terminals 140 and 141.
  • the base station 120 may transmit the data to the terminals 140 and 141 via the relays 130 and 131.
  • the relays 130 and 131 may transmit, to the terminals 140 and 141 using a radio channel, first data that is received from the base station 120. Also, the relays 130 and 131 may transmit, to the base station 120, second data that is received from the terminals 140 and 141. According to an embodiment of the present invention, the relay 130 may transmit data to the base station 120 or the terminals 140 and 141 via another relay 131.
  • FIG. 2 is a diagram illustrating a structure of a data plane protocol according to an embodiment of the present invention.
  • the structure of the data plane protocol is described based on a downlink from a gateway to a terminal, the gateway, a base station, and a relay according to an embodiment of the present invention may operate similarly even in an uplink.
  • a protocol stack 210 of the terminal may include a Layer (L1) 211, a Layer (L2) 212, and an application layer 213.
  • a protocol stack 220 of the relay corresponding to the terminal may include a Layer (L1) 221 and a Layer (L2) 222 to transmit data to the terminal.
  • a protocol stack 230 of the relay corresponding to the base station may include a Layer (L1) 231 and a Layer (L2) 232 to receive the data from the base station, and a layer 233 for a General Packet Radio Service (GPRS) Tunneling Protocol (GTP), an User Datagram Protocol (UDP), and an Internet Protocol (IP) of the relay.
  • GPRS General Packet Radio Service
  • GTP General Packet Radio Service
  • UDP User Datagram Protocol
  • IP Internet Protocol
  • a protocol stack 240 of the base station corresponding to the relay may include a Layer (L1) 241 and a Layer (L2) 242 to transmit the data to the relay.
  • a protocol stack 250 of the base station corresponding to the gateway may include a Layer (L1) 251 and a Layer (L2) 252 to receive the data from the gateway.
  • the base station may not include a protocol stack corresponding to the layer 233 for the GTP, the UDP, and the IP of the relay.
  • a protocol stack 260 of the gateway may include a Layer (L1) 261 and a Layer (L2) 262.
  • a layer 23 for a GTP, a UDP, and an IP of the gateway may correspond to the layer 233 for the GTP, the UDP, and the IP included in the protocol stack 230 of the relay.
  • the protocol stack of the gateway 260 may include a layer 264 for a Real-time Transport Protocol (RTP), a UDP, and an IP, and an application layer 265.
  • RTP Real-time Transport Protocol
  • the gateway corresponding to a serving gateway may use the layer 264 for the IP, the UDP, and the RTP that are associated with the data.
  • the gateway may use a GTP in order to transmit the data without exposing the data.
  • the GTP denotes a protocol that may operate based on the IP protocol. Therefore, IP session associated with GTP session and UDP session associated with the GTP session may exist.
  • an IP session associated with data, a UDP session associated with data, an RTP session associated with data, and the like to transmit data of an application layer may be classified into protocols associated with the data.
  • an IP session associated with GTP session, a UDP session associated with GTP session, and the like to operate the GTP session may be classified into protocols associated with the GTP session.
  • the gateway may be connected to the base station using a line, and may use the Layer 1 (L1) 261 and the Layer 2 (L2) 262 in order to transmit the data to the base station.
  • the base station may forward, to the relay, the data received from the gateway. Specifically, the base station may receive the data from the gateway using the Layer 1 (L1) 251 and the Layer 2 (L2) 252. The base station may transmit the data to the relay that is wirelessly connected to the base station, using the Layer (L1) 241 and the Layer (L2) 242 of a 3 rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) protocol.
  • 3GPP 3 rd Generation Partnership Project
  • the relay may receive the data from the base station using the Layer (L1) 231 and the Layer (L2) 232 of a 3GPP LTE protocol.
  • the relay may receive a protocol associated with the GTP from the gateway via the base station.
  • the relay may transmit the data to the terminal that is wirelessly connected to the relay, using the Layer (L1) 221 and the Layer (L2) 222 of a 3GPP LTE protocol.
  • the terminal may receive the data using the Layer (L1) 211 and the Layer (L2) 212 of a 3GPP LTE protocol, and transfer the data to the application layer 213.
  • FIG. 3 is a diagram illustrating a format of a downlink packet where a header is compressed according to an embodiment of the present invention.
  • a base station according to an embodiment of the present invention may transmit the downlink packet of FIG. 3 to a terminal via a relay.
  • the downlink packet may include an LTE L2 header 310.
  • the LTE L2 header 310 may include a Media Access Control (MAC) header 311 and a Radio Link Control (RLC) header 312.
  • the base station may transmit data 334 to the terminal via the relay using a 3GPP LTE protocol.
  • MAC Media Access Control
  • RLC Radio Link Control
  • the downlink packet may include a GTP related header 320.
  • the GTP related header 320 may include a GTP header 323, an IP header 321 associated with the GTP header 323, and a UDP header 322 associated with the GTP header 323.
  • the IP header 321 and the UDP header 332 that are included in the GTP related header 320 may be used to operate the GTP, and thus are different from an IP header 331 associated with the data 334 and a UDP/RTP header 332 associated with the data 334.
  • the base station may compress the GTP related header 320.
  • the GTP related header 320 When the GTP related header 320 is compressed, it may decrease an amount of control information used to transmit the data. Since overhead for transmitting the data decreases, it is possible to effectively use a radio channel.
  • the base station may compress the GTP related header 320 using a RObust Header Compression (ROHC) scheme.
  • ROHC RObust Header Compression
  • the base station 320 may generate, as header decompression information, information to decompress the compressed GTP related header 320, and may insert the header decompression information into a Packet Data Convergence Protocol (PDCP) 313 of the LTE L2 header 310 as a header compression (HC) header 335.
  • PDCP Packet Data Convergence Protocol
  • HC header compression
  • the downlink packet may include a data packet 330.
  • the data packet 330 may include the data 334, the IP header 331 associated with the data 334, and the UDP/RTP header 332 associated with the data 334.
  • the gateway may compress a data related header 333.
  • the data related header 333 When the data related header 333 is compressed, it may decrease an amount of control information used to transmit the data 334. Therefore, it is possible to effectively use a radio channel.
  • the gateway may generate, as header decompression information, information to decompress the data related header 333, and may insert the header decompression information as the HC header 335.
  • FIG. 4 is a diagram illustrating a format of a downlink packet where a plurality of data packets are integrated according to an embodiment of the present invention.
  • a gateway integrates a plurality of data packets and transmits the integrated data packet, it may decrease a data transmission amount and a number of data transmissions when a base station transmits data to a relay.
  • a base station may receive a first data packet 420 and a second data packet 430 from the gateway.
  • the first data packet 420 may include an IP header 421 associated with the first data 423, and an UDP/RTP header 422 associated with the first data 423.
  • the second data packet 430 may include an IP header 431 associated with the second data 433, and an UDP/RTP header 432 associated with the second data 433.
  • the base station may generate, as a Stream Control Transport Protocol (SCTP) related header 410, information associated with the first data packet 420 and the second data packet 430.
  • SCTP Stream Control Transport Protocol
  • the SCTP related header 410 may include an IP header 411 and an SCTP header 412.
  • the base station may compress headers associated with data that are included in each data packet, and thereby generate header decompression information, and insert the header decompression information as an HC header.
  • the base station may compress the IP header 421 and the UDP/RTP header 422 associated with the first data 423, included in the first data packet 420, and the IP header 431 and the UDP/RTP header 432 associated with the second data 433, included in the second data packet 430, and thereby generate the header decompression information.
  • the base station may insert the generated header information as HC headers 424 and 434.
  • a number of data packets transmitted by the base station may decrease. Accordingly, a utilization rate of an SCTP related header and an L2 header may decrease. In particular, when transmitting a small amount of data such as a voice packet, a number of transmissions may also decrease.
  • FIG. 5 is a block diagram illustrating a structure of a relay 500 according to an embodiment of the present invention.
  • the relay 500 may include a receiver 510, a header decompression unit 520, and a transmitter 530.
  • a gateway 540 may transmit data to the relay 500 via a base station 550.
  • the gateway 540 may compress a GTP header associated with the data, and may transmit the GTP header to the relay 500 via the base station 550.
  • the gateway 540 may transmit the GTP header associated with the data to the base station 550 without compressing the GTP header.
  • the base station 550 may compress the GTP header and transmit the compressed GTP header to the relay 500.
  • the receiver 510 may receive the data and the compressed GTP header from the base station 550.
  • the gateway 540 or the base station 550 may compress the GTP header using a ROHC scheme.
  • the header decompression unit 520 may decompress the compressed GTP header.
  • the header decompression unit 520 may decompress the compressed GTP header using the ROHC scheme.
  • the receiver 510 may receive header decompression information from the base station 550, and decompress the compressed GTP header using the header decompression information.
  • the transmitter 530 may transmit the data to a terminal 560 using the decompressed GTP header.
  • the receiver 510 may additionally receive, from the base station 550, a compressed UDP header associated with the compressed GTP header and a compressed IP header associated with the compressed GTP header.
  • the header decompression unit 520 may decompress the compressed UDP header and IP header.
  • the receiver 510 may additionally receive header decompression information to decompress the compressed UDP header and IP header that are associated with the compressed GTP header.
  • the header decompression unit 520 may decompress the compressed UDP header and IP header using the header decompression information.
  • the transmitter 530 may transmit the data to the terminal 560 using the decompressed UDP header and IP header.
  • FIG. 6 is a block diagram illustrating a structure of a gateway 600 according to an embodiment of the present invention.
  • the gateway 600 may include a header compression unit 610 and a transmitter 620.
  • the header compression unit 610 may compress an IP header associated with data and a UDP/RTP header associated with the data.
  • the header compression unit 610 may compress the IP header or the UDP/RTP header using a ROHC scheme.
  • the transmitter 620 may transmit the data, the compressed IP header, and the compressed UDP/RTP header to a base station 630.
  • the base station 630 may forward the data, the compressed IP header, and the compressed UDP/RTP header to a relay 640 accessing the base station 630.
  • the relay 640 may forward the data, the compressed IP header, and the compressed UDP/RTP header to a terminal 650 accessing the relay 640.
  • the terminal 650 may decompress the compressed IP header and UDP/RTP header.
  • the header compression unit 610 may generate header decompression information to decompress an IP associated with data or a UDP/RTP header associated with the data.
  • the transmitter 620 may transmit the header decompression information to the terminal 650 via the base station 630 and the relay 640.
  • the terminal 650 may decompress the IP header or the UDP/RTP header using the header decompression information.
  • FIG. 7 is a block diagram illustrating a structure of a base station 700 according to an embodiment of the present invention.
  • the base station 700 may include a receiver 710, a header compression unit 720, an SCTP header generation unit 730, and a transmitter 740.
  • the receiver 710 may receive a GTP header and a data packet from a gateway 750.
  • a GTP denotes a protocol to transmit the data packet to an application without exposing contents of the data packet.
  • the header compression unit 720 may compress the GTP header.
  • the header compression unit 720 may compress the GTP header using a ROHC scheme.
  • the transmitter 740 may transmit the compressed GTP header and the data packet to a relay 760.
  • the relay 760 may transmit the data packet to a terminal 770.
  • the base station 700 compresses the GTP header, overhead for transmitting data may decrease. Accordingly, it is possible to effectively use a radio channel from the base station 700 to the relay 760, and a radio channel from the relay 760 to the terminal 770.
  • the header compression unit 720 may generate, as header decompression information, information to decompress the GTP header.
  • the transmitter 740 may transmit the header decompression information to the terminal 770 via the relay 760.
  • the terminal 770 may decompress the compressed GTP header using the header decompression information.
  • the receiver 710 may additionally receive, from the gateway 750, a UDP header associated with the GTP header and an IP header associated with the GTP header.
  • the header compression unit 720 may compress the UDP header and the IP header.
  • the transmitter 740 may transmit the compressed UDP header and IP header to the terminal 770 via the relay 760.
  • the header compression unit 720 may generate, as header decompression information, information to decompress the UDP header associated with the GTP header, and information to decompress the IP header associated with the GTP header.
  • the transmitter 740 may transmit the header decompression information to the transmitter 770 via the relay 760.
  • the terminal 770 may decompress the compressed UDP header and IP header using the header decompression information.
  • the receiver 710 may receive a plurality of data packets from the gateway 750.
  • the SCTP header generation unit 730 may integrate the plurality of data packets and generate, as an SCTP header, information associated with the integrated data packet.
  • the transmitter 740 may transmit the SCTP header and the integrated data packet to the relay 760.
  • the relay 760 may separate the integrated data packet using the SCTP header, and sequentially transmit the separated data packets to the terminal 770.
  • the relay 760 may transmit the SCTP header and the integrated data packet to the terminal 770.
  • the terminal 770 may separate the integrated data packet using the SCTP header.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte sur une technologie permettant de diminuer ou d'éliminer une perte d'efficacité due à la communication dans un système de communication comprenant un relais. Une station de base comprise dans le système de communication peut compresser un en-tête de protocole pour transmettre des données. Le relais peut recevoir l'en-tête de protocole compressé et les données, et décompresser ensuite l'en-tête de protocole compressé pour transmettre l'en-tête de protocole décompressé à un terminal.
PCT/KR2009/003947 2008-07-21 2009-07-17 Système de communication permettant de supprimer une perte d'efficacité due à la transmission Ceased WO2010011054A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/996,931 US20110090840A1 (en) 2008-07-21 2009-07-17 Communication system for removing transmission overhead

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20080070692 2008-07-21
KR10-2008-0070692 2008-07-21
KR1020090062691A KR101236033B1 (ko) 2008-07-21 2009-07-09 통신 오버헤드를 제거하는 통신 시스템
KR10-2009-0062691 2009-07-09

Publications (2)

Publication Number Publication Date
WO2010011054A2 true WO2010011054A2 (fr) 2010-01-28
WO2010011054A3 WO2010011054A3 (fr) 2011-04-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102647768A (zh) * 2011-02-18 2012-08-22 电信科学技术研究院 基于lte-lan的报文转发方法及装置

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US6839339B1 (en) * 2000-02-02 2005-01-04 Lucent Technologies Inc. Header compression for general packet radio service tunneling protocol (GTP)-encapsulated packets
EP1372310A1 (fr) * 2002-06-12 2003-12-17 Motorola, Inc. Appareil et procédé de communication des informations avec compression d'en-tête
KR100884956B1 (ko) * 2002-08-14 2009-02-23 엘지전자 주식회사 비대칭 양방향 패킷데이터 송수신 방법 및 시스템
FI20041005A0 (fi) * 2004-07-20 2004-07-20 Nokia Corp Otsikkotietojen pakkaus pakkaajan ja pakkauksen purkajan välillä
KR100913900B1 (ko) * 2005-05-04 2009-08-26 삼성전자주식회사 이동통신 시스템에서 미리 정의된 길이 지시자를 이용해서 패킷 데이터를 송수신하는 방법 및 장치

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102647768A (zh) * 2011-02-18 2012-08-22 电信科学技术研究院 基于lte-lan的报文转发方法及装置
WO2012110004A1 (fr) * 2011-02-18 2012-08-23 电信科学技术研究院 Procédé et dispositif de transfert de messages sur la base de lte-lan
CN102647768B (zh) * 2011-02-18 2014-06-18 电信科学技术研究院 基于lte-lan的报文转发方法及装置

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