EP1145581A1 - Attribution de bandes de frequence a des systemes de radiocommunication - Google Patents

Attribution de bandes de frequence a des systemes de radiocommunication

Info

Publication number
EP1145581A1
EP1145581A1 EP00904825A EP00904825A EP1145581A1 EP 1145581 A1 EP1145581 A1 EP 1145581A1 EP 00904825 A EP00904825 A EP 00904825A EP 00904825 A EP00904825 A EP 00904825A EP 1145581 A1 EP1145581 A1 EP 1145581A1
Authority
EP
European Patent Office
Prior art keywords
radio communication
frequency bands
communication system
frequency
transmission
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.)
Withdrawn
Application number
EP00904825A
Other languages
German (de)
English (en)
Inventor
Egon Schulz
Gerhard Ritter
Günther HERBSTER
Michael Färber
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1145581A1 publication Critical patent/EP1145581A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • 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
    • H04B7/2615—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid frequency-time division multiple access [FDMA-TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management

Definitions

  • the invention relates to a radio communication system with base stations and subscriber stations whose use of frequency bands for the radio interface coordinates with those of other spatially superimposed radio communication systems
  • radio communication systems messages (for example voice, image information or other data) are transmitted with the aid of electromagnetic waves via a radio interface.
  • the radio interface relates to a connection between a base station and subscriber stations, it being possible for the subscriber stations to be mobile stations or fixed radio stations.
  • the electromagnetic waves are emitted at carrier frequencies that lie in the frequency band provided for the respective system.
  • UMTS Universal Mobile Telecommunication System
  • 3rd generation systems frequencies in the frequency band of approx. 2000 MHz are provided.
  • the UMTS band consists of unpaired band and paired band.
  • Two modes are provided for the third mobile radio generation, one mode being an FDD operation (frequency division duplex), see ETSI STC SMG2 UMTS-Ll, Tdoc SMG2 UMTS-Ll 221/98, from August 25, 1998, and the other mode is a TDD Operation (time diVision duplex), see DE 198 27 700.
  • the operating modes are to be used in different frequency bands.
  • TDD should be used in the unpaired bands
  • FDD should be used in the paired bands.
  • One unpaired band is in the frequency range from 1900 to 1920 MHz and the other in the frequency range from 2010 to 2025 MHz.
  • the band for the upward direction of the paired band is in the frequency range from 1920 to 1980 MHz and the band for the downward direction of the paired band in the frequency range from 2110 to 2170 MHz.
  • the duplex spacing for the paired band is therefore 190 MHz.
  • Parts of these bands are allocated to different network operators, whereby, as with previous radio communication systems (see GSM global system for mobile communications), a coherent block of frequency bands is to be allocated to a network operator.
  • 1 shows an allocation plan for the bands fl to fl ⁇ to four different network operators (operators) Opl to Op4.
  • the object of the invention is to achieve a more flexible use of the frequency bands available to a radio communication system at low cost. This object is achieved by the radio communication system with the features of claim 1. Advantageous developments of the invention can be found in the subclaims.
  • the radio interface comprises at least a first and a second frequency band.
  • a radio communication system is not assigned several frequency bands in blocks, but at least one frequency band of a further radio communication system is arranged between the frequencies of the first and second frequency bands. So there is a minimum distance between the frequency bands used at a location. In the paired band, the available transmission capacity is the same in both transmission directions. If, on average, the data transmission in the radio communication system is asymmetrical, ie the same amounts of data cannot be transmitted in the up and down direction, there is a problem with regard to the capacity utilization.
  • the frequency bands of a location ie, for example, a base station
  • a base station which reduces mutual interference of radio transmission in both frequency bands, even if all the frequency bands made available to the network operator are used in the base station.
  • This also gives a higher degree of flexibility when using different transmission modes in the frequency bands.
  • the minimum distance is at least one frequency band, but advantageously a plurality of frequency bands, which are allocated, for example, to a number of radio communication systems. To minimize interference, it is advantageous that the greatest possible distance is provided between the frequencies of the first and second frequency bands.
  • a frequency duplex method is used in the first frequency band and a time duplex method in the second frequency band to separate the transmission directions.
  • the allocation of capacity to the transmission directions can be influenced in a frequency band by shifting switching points between the up and down direction.
  • the radio transmission is carried out in the upward direction in the first frequency band.
  • higher data rates are required in the downward direction than in the upward direction.
  • the connection can be carried out depending on the traffic or time.
  • the frequency bands are broadband and the data components are spread with a subscriber or channel-specific spreading code.
  • subscriber separation therefore takes place according to a CDMA subscriber separation process.
  • one or more base stations of one or more further radio communication systems are installed at one location without restricting flexibility.
  • the frequency bands of the base stations that are used for another transmission mode e.g. TDD
  • TDD transmission mode
  • 3A shows a frequency allocation according to the invention to four network and 3B operators
  • 4 shows a frequency allocation according to the invention to four network operators, some of which have the same location of the base stations and any use of different transmission methods in the paired band
  • 5 shows a frequency allocation according to the invention to six network operators
  • 6 shows a frequency allocation according to the invention to six
  • Fig. 7 block diagram of a radio communication system
  • the TDD mode is a time-division duplex method for separating the transmission directions UL, DL, so that, in contrast to the frequency duplex method (FDD), transmission capacity in the downward direction DL is also set in a frequency band for the upward direction UL by setting the switchover points accordingly Can be made available.
  • the design of the radio interface in TDD mode can be found, for example, in DE 198 27 700.
  • Asymmetrical data services that are particularly supported by the TDD mode are, for example, Internet or packet data services.
  • TDD mode 16 time slots in TDD mode, of which two time slots are used for control channels, 14 time slots remain for the traffic data.
  • An asymmetrical capacity allocation provides, for example, 13 time slots in the downward direction DL and only one in the upward direction UL.
  • the time slots are distributed more evenly over the transmission directions.
  • the use of the TDD mode in these frequency bands f6, f9, flO, fl4 and fl ⁇ can be switched on and off as required. If in a radio communication system and for a base station the traffic is completely the same in both transmission directions, it is more advantageous to operate both paired frequency bands, for example f6 and g ⁇ , in FDD mode.
  • the decisions about the setting of the switchover point or about the use of the modes are made depending on the traffic volume by a facility for radio resource management. This can also be used to support time-fluctuating, particularly high data rates in the downward direction DL with a good capacity utilization for a radio communication system.
  • the TDD mode or the FDD mode in only one transmission direction is preferably used by the asymmetrical services and the FDD mode in both transmission directions by the symmetrical services.
  • a frequency band of the upward direction UL in the paired band is assigned to TDD
  • a frequency band is free in the downward direction DL of the paired band.
  • This free frequency band can also be used to distribute subscribers in the downward direction DL of the paired band.
  • the upper bands include the frequency bands g5, g9 and gl3.
  • the frequency band f5 is now used for the TDD mode, then the frequency bands f9 and fl3 are available for the FDD mode upward direction UL, but for the FDD mode downward direction DL it can use the frequency bands g5, g9 and gl3 to use. It thus has the possibility of distributing the subscribers in the downward direction DL to three frequency bands instead of only two frequency bands as in the upward direction UL. This reduces the interference in the downward direction DL.
  • the transmission filters can be implemented with simpler filters and are therefore cheaper and have a smaller volume. For example, assuming a bandwidth in the UMTS mobile radio system of 5 MHz, when using frequencies f5 and f9 at one location, the frequency spacing is equal to 15 MHz.
  • the interference caused by the transmission in TDD mode is so low that a 6 high-Q ceramic resonator filter is sufficient as a transmission filter to reduce the interference.
  • Such a filter is also sufficient if there is only 5 MHz between the frequency bands of the two modes (only one frequency band is in between).
  • FIGS. 3A and 3B A possible constellation of frequency allocation for four network operators is shown in FIGS. 3A and 3B.
  • the frequency bands fl to f4 denote the unpaired band, the frequency bands f5 to fl ⁇ the upward direction UL of the paired band and the frequency bands g5 to gl6 the downward direction DL of the paired band.
  • the frequency assignments according to FIGS. 5 and 6 are advantageous. Instead of three, only two frequency bands are available per radio communication system in both transmission directions UL, DL of the paired band, and not every radio communication system also has its own frequency band in the unpaired band. In the constellation shown in FIG. 6, three operators can also use a common location.
  • the structure of the radio communication system shown in FIG. 7 corresponds to a known GSM mobile radio network, which consists of a multiplicity of mobile switching centers MSC which are networked with one another or have access to them establish a fixed network PSTN. Furthermore, these mobile switching centers MSC are each connected to at least one facility for radio resource management RNC. Each device for radio resource management RNC in turn enables a connection to at least one base station BS.
  • a base station BS is a radio station which can establish a radio connection to subscriber stations, for example mobile stations MS, via a radio interface.
  • An operations and maintenance center OMC implements control and maintenance functions for the mobile network or for parts of it.
  • the functionality of this structure is used by the radio communication system according to the invention; however, it is also applicable to other radio communication systems, e.g. to the wireless subscriber line, transferable, in which the invention can be used.
  • Each of the base stations BS uses frequency bands f5, f9, fl3 or f ⁇ , flO, fl4 in the upward direction UL of the paired band, each of which does not form a contiguous block, but is separated by at least one frequency band from another radio communication system. This results in a separation of the center frequencies of the frequency bands f5, f9, fl3 from here 20 MHz within one location. If the two base stations BS are installed at a common location, then the second base station should use the frequency bands f7, fll and fl5.

Landscapes

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

Abstract

Selon la présente invention, on part du principe qu'au moins deux systèmes de radiocommunication se chevauchent spatialement et que dans l'un desdits systèmes de radiocommunication, l'interface radio comporte au moins des première et deuxième bandes de fréquences. Pour l'attribution de fréquences selon la présente invention, plusieurs bandes de fréquences ne sont pas attribuées en bloc à un système de radiocommunication, mais au moins une bande de fréquences d'un autre système de radiocommunication est intercalée entre les fréquences des première et deuxième bandes de fréquences. Il existe donc un écart minimal entre les bandes de fréquences utilisées en un lieu donné. Ainsi, dans le système de communication mobile de troisième génération à vocation mondiale, une bande de fréquences du mode duplex à répartition dans le temps (TDD) peut être utilisée également en mode TDD dans le sens amont et des services de données asymétriques peuvent être mieux soutenus.
EP00904825A 1999-01-18 2000-01-03 Attribution de bandes de frequence a des systemes de radiocommunication Withdrawn EP1145581A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19901755A DE19901755C2 (de) 1999-01-18 1999-01-18 Frequenzbandvergabe an Funk-Kommunikationssysteme
DE19901755 1999-01-18
PCT/DE2000/000028 WO2000042800A1 (fr) 1999-01-18 2000-01-03 Attribution de bandes de frequence a des systemes de radiocommunication

Publications (1)

Publication Number Publication Date
EP1145581A1 true EP1145581A1 (fr) 2001-10-17

Family

ID=7894601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00904825A Withdrawn EP1145581A1 (fr) 1999-01-18 2000-01-03 Attribution de bandes de frequence a des systemes de radiocommunication

Country Status (4)

Country Link
EP (1) EP1145581A1 (fr)
CN (1) CN1189053C (fr)
DE (1) DE19901755C2 (fr)
WO (1) WO2000042800A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3802372B2 (ja) 2001-05-16 2006-07-26 株式会社エヌ・ティ・ティ・ドコモ 移動通信システム
GB2398455B (en) 2003-02-11 2007-09-26 Ipwireless Inc Method, base station and mobile station for TDD operation in a communication system
WO2004107606A1 (fr) * 2003-05-28 2004-12-09 Ipwireless, Inc. Procede, station de base et station mobile pour fonctionnement en multiplexage par repartition dans le temps (tdd) dans un systeme de communication
CN100347971C (zh) * 2003-11-28 2007-11-07 大唐移动通信设备有限公司 时分双工移动通信系统中实现频率资源动态优化的方法
JP2006054597A (ja) * 2004-08-10 2006-02-23 Ntt Docomo Inc スロット割当装置及びその方法
US20080219201A1 (en) * 2005-09-16 2008-09-11 Koninklijke Philips Electronics, N.V. Method of Clustering Devices in Wireless Communication Network
EP1798873A1 (fr) * 2005-12-15 2007-06-20 Siemens Aktiengesellschaft Procédé de transmission de donnees et/ou de signaux de commande par une station mobile TDD par une bande de frequence FDD et par interface radio dans un systeme de radio communications
EP1799001A1 (fr) * 2005-12-15 2007-06-20 Siemens Aktiengesellschaft Procédé pour l'attribution de ressources de bandes de fréquence d'un système de communication sans fil et appareil de réseau et station d'abonné
CN101631316B (zh) * 2008-07-16 2011-07-06 中国移动通信集团公司 在tdd系统中提高频谱利用率的方法和设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4307966C2 (de) * 1993-03-12 2001-04-05 Siemens Ag Mobilfunksystem
US5373547A (en) * 1993-06-28 1994-12-13 Motorola, Inc. Method and apparatus for radio handset spectrum range registration
US5475677A (en) * 1994-12-29 1995-12-12 Bell Communications Research Inc. Compatible licensed and unlicensed band portable handset unit for TDMA wireless communications system
US5732076A (en) * 1995-10-26 1998-03-24 Omnipoint Corporation Coexisting communication systems
JP3241261B2 (ja) * 1996-03-01 2001-12-25 株式会社東芝 移動通信システムとその無線通信装置
US5781865A (en) * 1996-05-20 1998-07-14 Scientific Research Corporation PCS cell site system for allowing a plurality of PCS providers to share cell site antennas

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0042800A1 *

Also Published As

Publication number Publication date
WO2000042800A1 (fr) 2000-07-20
DE19901755A1 (de) 2000-08-03
CN1189053C (zh) 2005-02-09
DE19901755C2 (de) 2003-06-18
CN1369181A (zh) 2002-09-11

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