WO2002103919A2 - Procede et systeme pour la transmission hybride par paquets ip et par multiplexeur sur une interface hertzienne - Google Patents

Procede et systeme pour la transmission hybride par paquets ip et par multiplexeur sur une interface hertzienne Download PDF

Info

Publication number
WO2002103919A2
WO2002103919A2 PCT/US2002/019331 US0219331W WO02103919A2 WO 2002103919 A2 WO2002103919 A2 WO 2002103919A2 US 0219331 W US0219331 W US 0219331W WO 02103919 A2 WO02103919 A2 WO 02103919A2
Authority
WO
WIPO (PCT)
Prior art keywords
frame
recited
data
duration
requests
Prior art date
Application number
PCT/US2002/019331
Other languages
English (en)
Other versions
WO2002103919A9 (fr
WO2002103919A3 (fr
Inventor
Juan-Carlos Zuniga
Tjo San Jao
Original Assignee
Harris Corporation
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
Application filed by Harris Corporation filed Critical Harris Corporation
Priority to AU2002315346A priority Critical patent/AU2002315346A1/en
Priority to CA002450901A priority patent/CA2450901A1/fr
Priority to EP02742192A priority patent/EP1397876A4/fr
Publication of WO2002103919A2 publication Critical patent/WO2002103919A2/fr
Publication of WO2002103919A3 publication Critical patent/WO2002103919A3/fr
Publication of WO2002103919A9 publication Critical patent/WO2002103919A9/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria

Definitions

  • the present invention is directed toward point-to-multipoint wireless communication systems in general, and to Time Division Multiple Access (TDMA) Broadband Wireless Access (BWA) in particular.
  • TDMA Time Division Multiple Access
  • BWA Broadband Wireless Access
  • FIG. 1 illustrates a block diagram of a BWA system 100 using conventional TDMA (Time Division Multiple Access) technology employing a Frequency Division Duplex (FDD) duplexing scheme.
  • the system consists of a plurality of Base Stations (BS) 110 in communication over network 115 and each BS 110 controlling and receiving information items from a plurality of associated Remote Stations (RS) 120 over corresponding networks 116, 117, 118.
  • Base Station 110 continuously transmits signals, referred to as downstream transmission, through an omnidirectional antenna, or at least one sectional antenna, to each associated RS 120 assigned to a frequency carrier in Time Division Multiplex (TDM) mode.
  • TDM Time Division Multiplex
  • Each remote station 120 responds to the associated base station 110 downstream command or instruction, in turn.
  • Upstream transmission Transmission from remote station 120 to base station, referred to as an upstream transmission, on the other hand, is typically in a burst using a frequency carrier different than that of the downstream carrier frequency.
  • base station 1 10 sequentially commands each remote station, to transmit to avoid the collision of more than one remote station transmitting.
  • Base station 110 thus, includes a scheduling means, referred to as a scheduler, that decides when the next set of transmissions from a designated remote station 120 will occur.
  • a scheduling means referred to as a scheduler
  • the scheduler may direct a remote station to transmit using frames which contain fixed length channels, i.e., synchronous, or variable length channels, i.e., asynchronous.
  • data such as digitized voice data or constant bit rate (CBR) data
  • CBR constant bit rate
  • the duration of the frame is usually a trade off between the data throughput efficiency and the latency of the voice data. It is usually in the order of several milliseconds.
  • data may arrive in packets, for example, over the INTERNET, at unknown times, intervals or sizes, e.g., Internet Protocol (IP), then the output transmission cannot be predicated and the channel size or duration must be decided in real-time.
  • IP Internet Protocol
  • the base station may choose one mode or the other for each individual remote station depending on the data traffic that will be managed.
  • the data of one service is configured to accommodate the format of the other service.
  • TDM systems may transport packet data services by allocating a constant bandwidth for the transmission of each packet.
  • TDM or CBR services e.g., voice-over-IP
  • voice-over-IP may be encapsulated into packets and a synchronous transmission is allocated to those packets.
  • the use of these mixed systems in disadvantageous as available resources are wasted either in overhead control information or the transmission of no informational data.
  • Figure 1 illustrates a conventional TDMA point-to-multipoint wireless communication system
  • Figure 2 illustrates a block diagram of a hybrid frame structure in accordance with the principles of the invention
  • Figure 3 illustrates a flow chart of an exemplary process for allocating informational data in a hybrid frame in accordance with the principles of the invention
  • Figure 4 illustrates a flow chart of a second exemplary process for allocating informational data in a hybrid frame in accordance with the principles of the invention
  • Figure 5 illustrates a system for operating on a hybrid frame in accordance with the principles of the invention.
  • FIG. 1 through 5 and the accompanying detailed description contained herein are to be used as an illustrative embodiment of the present invention and should not be construed as the only manner of practicing the invention. It is to be understood that these drawings are for purposes of illustrating the concepts of the invention and are not to scale. It will be appreciated that the same reference numerals, possibly supplemented with reference characters where appropriate, have been used throughout to identify corresponding parts.
  • FIG. 2 illustrates an exemplary embodiment of a hybrid frame 200 in accordance with the principles of the present invention.
  • the frame is divided into a TDM or CBR section 210 and a variable-length packet section 240.
  • TDM section 210 is divided into a plurality of conventional voice channels, represented as voice channels VCi, 212, VC 2 , 214, and VCj, 216.
  • voice channels VCi, 212, VC 2 , 214, and VCj , 216 retain a constant position with respect to the beginning of the frame that allows for real-time, synchronous transmission of voice or audio data.
  • voice channels 212, 214, 216 provide a high transmission priority to voice or audio related information items at a fixed interval or rate to avoid delays in reception. Delays in reception of voice data are undesirable as they contribute to the reception of choppy and even unintelligible voice data.
  • Variable section 240 representative of the remaining time within frame
  • Packet 200 contains variable length packet information items, represented as packet 1 , 242, packet 2, 244 and packet k 246.
  • Packets 242, 244, 246, contain relatively lower priority data, e.g., computer-computer digital data, such as e-mail, that may be transmitted when time is available. In this case, the duration of each packet depends on the amount of data to be transmitted. Accordingly, the position of packet 244, for example, varies in relation to the beginning of the frame, depending upon the size of preceding packets.
  • Figure 3 depicts a flow chart 300 of an exemplary process for determining the informational content of frame 200 of Figure 2.
  • data i.e., CBR and/or packet
  • data i.e., CBR and/or packet
  • the data or as referred to data requests are sorted based on a transmission priority.
  • a request is assigned to one of the channels assigned to constant bit rate data portion of the frame at block 340.
  • a determination is made whether the CBR boundary maximum limit has been exceeded.
  • the CBR boundary maximum limit is representative of a known number of channels. Hence, when the CBR boundary limit is exceeded each of the known number of channels has been assigned. In this case, the boundary insures part of the frame is reserved for allocating packet services.
  • processing returns to block 330 to determine whether a next/subsequent CBR request is to be processed. [0020] ' If, however, the answer is in the affirmative, then a determination is made at block 360, whether any requests for packet services were made. If the answer is in the affirmative, then a packet service is allocated to a portion of the packet service part of frame 200 at block 370.
  • a frame may include unassigned voice channels or packets as the number of services required is insufficient to fill the frame.
  • the unused or unallocated portions of the frame may be zero filled.
  • FIG. 4 illustrates a flow chart of an exemplary process 400 in accordance with a second aspect of the invention.
  • requests for realtime and packet services within a current frame are collected at block 410.
  • the real-time and packet services requests are ordered based on a known priority.
  • processing is terminated at block 490 as no more time is available in the frame.
  • processing returns to block 460 to process a next/subsequent packet service request. However, if the answer is in the affirmative, then processing is terminated at block 490.
  • FIG. 5 illustrates an exemplary system 500 for practicing the principles of the invention.
  • input data e.g., data requests
  • processing system 510 receives input data from network 550 and is processed in accordance with one or more software programs executed by processing system 510.
  • the results of processing system 510 are then be transmitted over network 570.
  • one or more input/output devices 540 receive input data from the illustrated sources 560 over network 550, which is then applied to processing system 510.
  • Processing system 510 comprises processor 520 in communication with, at least, input/output device 540 and memory 530.
  • Input/output devices 540, processor 520 and memory 530 may communicate over a communication medium 525.
  • the communication medium 525 may represent one or more conventional communication buses, such as ISA, PCI, PCMCIA bus, a communication network, one or more internal connections of a circuit, circuit card or other device, as well as portions and combinations of these and other communication media.
  • Processor 520 may be representative of one or more handheld calculators, special purpose or general purpose processing systems, desktop computers, laptop computers, palm computers, or personal digital assistant (PDA) device etc., as well as portions or combinations of these and other devices that can perform the operations illustrated in either Figure 3 or Figure 4.
  • PDA personal digital assistant
  • Figures 3 or Figure 4 is implemented by computer readable code executed by processor 520.
  • the code may be stored in the memory 530 or read/downloaded from a memory medium such as a CD-ROM or floppy disk (not shown).
  • input/output device 540 may be immediately accessible by processor 520 or may be stored in memory 530.
  • input/output device 540 may also allow for manual input, such as a keyboard or keypad entry or may read data from magnetic or optical medium.
  • hardware circuitry may be used in place of, or in combination with, software instructions to implement the invention.
  • the elements illustrated herein may also be implemented as discrete hardware elements, which include software instructions, e.g., FPGA, PAL, ASIC, or may be integrated into a single unit.
  • System 500 may, as illustrated, transmit data over one or more network connections 570 from a server or servers over, e.g., a global computer communications network such as the Internet, Intranet, a wide area network (WAN), a metropolitan area network (MAN), a local area network (LAN), a terrestrial broadcast system, a cable network, a satellite network, a wireless network, or a telephone network (POTS), as well as portions or combinations of these and other types of networks.
  • a global computer communications network such as the Internet, Intranet, a wide area network (WAN), a metropolitan area network (MAN), a local area network (LAN), a terrestrial broadcast system, a cable network, a satellite network, a wireless network, or a telephone network (POTS), as well as portions or combinations of these and other types of networks.
  • a global computer communications network such as the Internet, Intranet, a wide area network (WAN), a metropolitan area network (MAN), a local area network (LAN), a terrestrial broadcast system, a cable network, a satellite

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

L'invention concerne un procédé et un système permettant de générer une trame de transmission pour assurer la transmission simultanée de données audio numérisées en temps réel et de données numériques non en temps réel. Le procédé permettant de générer la trame de transmission hybride comprend les étapes consistant à accorder une priorité aux demandes de données représentatives de transmission audio et de données. Dans ces étapes, les demandes de données audio reçoivent une priorité haute. Ce procédé consiste ensuite à affecter à chacune des demandes de données audio une voie d'une durée fixe dans une première partie de la trame, et à affecter les demandes de transmission de données à une partie restante de la trame.
PCT/US2002/019331 2001-06-19 2002-06-19 Procede et systeme pour la transmission hybride par paquets ip et par multiplexeur sur une interface hertzienne WO2002103919A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2002315346A AU2002315346A1 (en) 2001-06-19 2002-06-19 Method and system for hybrid tdm and ip packet transmission over an air interface
CA002450901A CA2450901A1 (fr) 2001-06-19 2002-06-19 Procede et systeme pour la transmission hybride par paquets ip et par multiplexeur sur une interface hertzienne
EP02742192A EP1397876A4 (fr) 2001-06-19 2002-06-19 Procede et systeme pour la transmission hybride par paquets ip et par multiplexeur sur une interface hertzienne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29888701P 2001-06-19 2001-06-19
US60/298,887 2001-06-19

Publications (3)

Publication Number Publication Date
WO2002103919A2 true WO2002103919A2 (fr) 2002-12-27
WO2002103919A3 WO2002103919A3 (fr) 2003-04-10
WO2002103919A9 WO2002103919A9 (fr) 2003-10-30

Family

ID=23152405

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/019331 WO2002103919A2 (fr) 2001-06-19 2002-06-19 Procede et systeme pour la transmission hybride par paquets ip et par multiplexeur sur une interface hertzienne

Country Status (4)

Country Link
EP (1) EP1397876A4 (fr)
AU (1) AU2002315346A1 (fr)
CA (1) CA2450901A1 (fr)
WO (1) WO2002103919A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006068411A1 (fr) * 2004-12-21 2006-06-29 Electronics And Telecommunications Research Institute Procede de controle d'admission d'appels base sur un verrou et permettant a des services en temps differe de partager une bande passante
US20090305703A1 (en) * 2006-06-19 2009-12-10 Alcatel Lucent Base station system and method for call setting up, handing over and releasing in hybrid network

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5754537A (en) * 1996-03-08 1998-05-19 Telefonaktiebolaget L M Ericsson (Publ) Method and system for transmitting background noise data
US5930684A (en) * 1994-02-25 1999-07-27 Nokia Telecommunications Oy Method for transmitting calls of different priorities which are associated with different power levels in a cellular network
US6172971B1 (en) * 1997-03-31 2001-01-09 Samsung Electronics Co., Ltd. Method for forming frame structure for use in time division multiple access communication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5930684A (en) * 1994-02-25 1999-07-27 Nokia Telecommunications Oy Method for transmitting calls of different priorities which are associated with different power levels in a cellular network
US5754537A (en) * 1996-03-08 1998-05-19 Telefonaktiebolaget L M Ericsson (Publ) Method and system for transmitting background noise data
US6172971B1 (en) * 1997-03-31 2001-01-09 Samsung Electronics Co., Ltd. Method for forming frame structure for use in time division multiple access communication system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1397876A2 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006068411A1 (fr) * 2004-12-21 2006-06-29 Electronics And Telecommunications Research Institute Procede de controle d'admission d'appels base sur un verrou et permettant a des services en temps differe de partager une bande passante
US20090305703A1 (en) * 2006-06-19 2009-12-10 Alcatel Lucent Base station system and method for call setting up, handing over and releasing in hybrid network
US8189534B2 (en) * 2006-06-19 2012-05-29 Alcatel Lucent Base station system and method for call setting up, handing over and releasing in hybrid network
US8644257B2 (en) 2006-06-19 2014-02-04 Alcatel Lucent Base station system and method for call setting up, handing over and releasing in hybrid network

Also Published As

Publication number Publication date
WO2002103919A9 (fr) 2003-10-30
WO2002103919A3 (fr) 2003-04-10
EP1397876A2 (fr) 2004-03-17
EP1397876A4 (fr) 2008-10-22
AU2002315346A1 (en) 2003-01-02
CA2450901A1 (fr) 2002-12-27

Similar Documents

Publication Publication Date Title
Karol et al. Distributed-queueing request update multiple access (DQRUMA) for wireless packet (ATM) networks
US6879561B1 (en) Method and system for wireless packet scheduling with per packet QoS support and link adaptation
JP3454405B2 (ja) データ通信システムおよびデータ通信方法
US5239545A (en) Channel access control in a communication system
EP2209268B1 (fr) Réseau ATM sans fil doté d'une programmation de service de grande qualité
EP1554844B1 (fr) Systeme et procede de programmation
US6747976B1 (en) Distributed scheduling architecture with efficient reservation protocol and dynamic priority scheme for wireless ATM networks
JP2009189015A (ja) チャネルを共用する通信システム
CN1498472A (zh) 用于实时自适应容量调度的系统与方法
US6882625B2 (en) Method for scheduling packetized data traffic
EP1065908B1 (fr) Méthode pour générer des cellules ATM pour des applications à faible débit
Jacobs et al. Cpoda-a demand assignment protocol for satnet
Zhijun et al. QoS guaranteed Wireless LAN-Wireless access to ATM
Gusak et al. Performance evaluation of the 802.16 medium access control layer
KR20060013402A (ko) 통신시스템에서의 데이터 전송 방법 및 시스템
JP3660812B2 (ja) 通信アクセス方法、通信システム及び端末局
EP1397876A2 (fr) Procede et systeme pour la transmission hybride par paquets ip et par multiplexeur sur une interface hertzienne
US8218474B2 (en) Bandwidth allocation in satellite communication networks
KR100347731B1 (ko) 무선 이동 단말에서의 트래픽 제어 방법
KR100413222B1 (ko) 대역 요구 정보 전달 방법 및 그 방법을 사용하는 이동단말기와, 동적 슬롯 할당 방법 및 그 방법을 사용하는이동통신 시스템의 기지국
JP2003199148A (ja) 回線割当制御方法及び回線割当装置
Shanmuganathan et al. Performance measures of wireless protocols for ATM networks
Yu et al. A Multiple Access Protocol for Multimedia Transmission over 5G Wireless Asynchronous Transfer Mode Network
Wang et al. Wireless channel access for multimedia personal communication systems
KR100881442B1 (ko) 통신 시스템의 ＱｏＳ 패킷 스케줄링 방법 및 기지국

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
COP Corrected version of pamphlet

Free format text: PAGES 1/5-5/5, DRAWINGS, REPLACED BY NEW PAGES 1/5-5/5; DUE TO LATE TRANSMITTAL BY THE RECEIVING OFFICE

WWE Wipo information: entry into national phase

Ref document number: 2450901

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2002742192

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2002742192

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP