EP1331690B1 - Arrangement d'antenne pour station de base à faisceau ajustable - Google Patents

Arrangement d'antenne pour station de base à faisceau ajustable Download PDF

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Publication number
EP1331690B1
EP1331690B1 EP02001533A EP02001533A EP1331690B1 EP 1331690 B1 EP1331690 B1 EP 1331690B1 EP 02001533 A EP02001533 A EP 02001533A EP 02001533 A EP02001533 A EP 02001533A EP 1331690 B1 EP1331690 B1 EP 1331690B1
Authority
EP
European Patent Office
Prior art keywords
transmit power
solid angle
transmit
transmission power
arrangement
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.)
Expired - Lifetime
Application number
EP02001533A
Other languages
German (de)
English (en)
Other versions
EP1331690A1 (fr
Inventor
Karl-Georg Kettering
Markus Doetsch
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 Schweiz AG
Original Assignee
Siemens Schweiz 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 Schweiz AG filed Critical Siemens Schweiz AG
Priority to EP02001533A priority Critical patent/EP1331690B1/fr
Priority to DE50206457T priority patent/DE50206457D1/de
Priority to AT02001533T priority patent/ATE323953T1/de
Priority to US10/345,488 priority patent/US20030171131A1/en
Publication of EP1331690A1 publication Critical patent/EP1331690A1/fr
Application granted granted Critical
Publication of EP1331690B1 publication Critical patent/EP1331690B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations

Definitions

  • the invention relates to a device for emitting and receiving electromagnetic waves according to the preamble of claim 1.
  • Such a device is disclosed, for example, in the article by H. Briel, "Adaptive Antennas", Funkschau, Vol. 22, 1998.
  • the mobile radio antennas described in this article are constructed as antenna arrays in which matrix-like arranged transmitting and receiving elements are connected separately.
  • the separate connection during reception, the so-called uplink allows to determine the location of the mobile transmitter, ie it is determined in detail by the evaluation of the phase and amplitude position in the individual receiving elements of the incoming signal, from which direction the transmission signal of the mobile transmitter (eg mobile phone) has been received.
  • the invention is therefore based on the object to provide a device for receiving and transmitting electromagnetic waves, which allows particularly well to allow very complex radiographic diagrams while maintaining allowable limits.
  • each antenna can be easily dimensioned insofar as certain directions and / or solid angles are assigned to certain antenna parts and predefined values for the maximum permissible transmission power are predefined for these antenna parts and therefore maximum values for the antenna in this direction and / or in this solid angle Transmission power can not be exceeded.
  • a particularly low-radiation transmission variant results if an adaptive transmission and reception characteristic can be implemented by means of the driver circuit.
  • the emission lobe can be used particularly efficiently for communication with a moving transmitter / receiver.
  • mitbe Anlagende Abstrahlkeule according to the predetermined maximum allowable transmission power - as previously provided - reduce when the transmitter / receiver moves into a range in which not with the usual basic transmission power, but only with a here reduced transmission power to be sent.
  • this directional or space angle-dependent reduced radiation can be realized if in the driver circuit for the antenna, a directional and / or space angle-dependent limiting function is implemented, with the value for the basic transmission power in the appropriate direction or in can be superimposed on the corresponding solid angle.
  • this limiting function can be implemented in the form of a programmable logic map in which maximum values for the permissible transmission power are stored discretized for the direction or for the solid angle.
  • the map can be constructed, for example, so that a full radiation angle of 360 ° in 10 ° steps divided contains corresponding values for the maximum permissible transmission power.
  • a map constructed according to spherical coordinates can be provided in which the azimuth angle ⁇ and the angle ⁇ can likewise be discretized in 10 ° steps and a corresponding value for the maximum permissible transmission power is stored for each angle pair ( ⁇ , ⁇ ).
  • the limiting function is also realized as a programmable memory map in which discretized for the direction or for the solid angle attenuation values, ie numbers that are greater than / equal to zero and less than / equal to one are stored, with which the value for the basic transmit power is to be multiplied.
  • a further possible alternative consists in an attenuation function, which can be constructed as a continuously differentiable function or as a polynomial and, as a function of the direction and / or as a function of the solid angle, provides corresponding values for the required reduction of the transmission power.
  • each transmitting and receiving element is assigned a permissible maximum value for the transmission power or an attenuation value for the reduction of the basic transmission power.
  • This array structure with which adaptive antenna systems can be implemented with just one antenna mast, is therefore predestined for this procedure with "protected" transmission zones.
  • the permissible maximum value or the attenuation value in order to comply with the transmission power permitted by definition for a protected zone, it is necessary for the permissible maximum value or the attenuation value to also be reduced corresponding to the number of directly adjacent transmitting and receiving elements transmitting to the same subscriber. Otherwise, otherwise, due to the superposition of the waves radiated in phase, they would be in the (desired) Overlap areas of the radiation beams result in excessive values for the transmission power.
  • FIG. 1 shows a schematic representation of a plan view of the 0dB line L of a circular radiating mobile antenna A.
  • the mobile antenna A transmits at a frequency of 925 to 960 MHz with a maximum system limit for the electric field strength of 4 V / m. This defines the basic transmission power in this way.
  • the electric field strength behaves inversely proportional to the simple distance from the mobile antenna A (far field).
  • the table above shows how the basic transmission power is reduced in the areas that are particularly vulnerable. This table can be stored in a driver device not shown here for the mobile antenna A in the manner of a map.
  • the function of the characteristic diagram is explained for a mobile subscriber who is moving with a vehicle F along a route R and who is mobile-telephoning along this route R.
  • the maximum permissible transmission power is equal to the basic transmission power.
  • a level well below the basic transmission power will automatically set itself here due to the proximity to the mobile radio antenna.
  • the mobile radio antenna A which is configured in the embodiment as an array-like base station, allows the tracking of Abstrahlkeuel along the direction of travel of the mobile subscriber on its route R.
  • a clear reduced value for the in This range allows maximum transmission power. This reduces the performance of the mobile radio waves radiated to the mobile radio subscriber in this zone. As a consequence of this reduced transmission power, it may occur despite the transmission with the maximum transmission power permitted in this range that a region located on the mobile antenna A from the object "O1 side" may no longer be supplied with a sufficient radiation density.
  • Remedy here can provide the antenna diversity, in which a second in-phase transmitting antenna is provided, which can cover this leeward area from another location sufficient or complementary with his or her emission lobes.
  • FIG. 2 shows a unit sphere E with the radius 1 and, for reasons of clarity, only a solid angle RW, in which only about 50% of the basic transmission power is allowed to be transmitted. An emission lobe migrating into this solid angle region therefore experiences the intended reduction in the maximum permissible transmission power.
  • a further attenuation factor can be provided whose value correlates with the number of emission elements immediately adjacent to a participant.
  • the transmission power in the previously leading transmission element can be reduced in favor of the transmission power in the next leading transmission element, i. the power radiated in the sum of these two transmitting elements is not greater than the maximum transmitting power radiated by a transmitting element.
  • this additional reduction of the transmission power in the case of transmission elements radiating in the same direction not only applies to the particularly protected emission areas, but also to all other transmission areas in which the basic transmission power may be radiated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Claims (5)

  1. Dispositif (A) d'émission et de réception d'ondes électromagnétiques par un certain nombre d'éléments émetteurs et ayant une caractéristique d'émission d'une puissance émise de base pouvant être, de conception, diversifiée dans l'espace, dans lequel
    une structure d'antenne et un circuit logique d'attaque des éléments émetteurs sont prévus en ayant une caractéristique adaptative d'émission et de réception de manière à prévoir une limitation, pouvant être prescrite individuellement et dépendant de la direction et/ou de l'angle solide, de la puissance émise de base à des puissances émises maximum admissibles dans des directions pouvant être sélectionnées ou dans des angles solides (RW) pouvant être sélectionnés,
    caractérisé en ce que
    il est prévu une fonction de limitation en fonction de la direction et/ou de l'angle solide avec laquelle la valeur pour la puissance émise de base dans la direction correspondante ou dans l'angle solide (RW) correspondant peut être superposée.
  2. Dispositif (A) suivant la revendication 1,
    caractérisé en ce que
    la fonction de limitation est réalisée sous la forme d'une famille de courbes caractéristiques pouvant être programmée en mémoire, dans laquelle sont mémorisées de manière discrète pour la direction ou pour l'angle (RW) solide des valeurs maximum de la puissance émise admissible.
  3. Dispositif (A) suivant la revendication 1,
    caractérisé en ce que
    la fonction de limitation est réalisée sous la forme d'une famille de courbes caractéristiques pouvant être programmée en mémoire, dans laquelle sont mémorisées de manière discrète pour la direction ou pour l'angle (RW) solide des valeurs d'atténuation, c'est-à-dire des nombres réels qui sont supérieurs ou égaux à zéro et qui sont inférieurs ou égaux à un, par lesquels il faut multiplier la valeur de la puissance émise de base.
  4. Dispositif (A) suivant la revendication 2 ou 3,
    caractérisé en ce que
    il est prévu une structure en réseau d'éléments d'émission et de réception, une valeur maximum admissible pour la puissance émise ou une valeur d'atténuation pour la diminution de la puissance émise de base étant affectée à chaque élément d'émission et de réception.
  5. Dispositif (A) suivant la revendication 3,
    caractérisé en ce que
    la valeur maximum admissible ou la valeur d'atténuation est diminuée, en outre, en fonction du nombre d'éléments d'émission et de réception émettant directement voisins.
EP02001533A 2002-01-23 2002-01-23 Arrangement d'antenne pour station de base à faisceau ajustable Expired - Lifetime EP1331690B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP02001533A EP1331690B1 (fr) 2002-01-23 2002-01-23 Arrangement d'antenne pour station de base à faisceau ajustable
DE50206457T DE50206457D1 (de) 2002-01-23 2002-01-23 Mobilfunkantennenanlage mit einstellbarem Richtverhalten
AT02001533T ATE323953T1 (de) 2002-01-23 2002-01-23 Mobilfunkantennenanlage mit einstellbarem richtverhalten
US10/345,488 US20030171131A1 (en) 2002-01-23 2003-01-17 Mobile radiotelephone antenna array with adjustable directional characteristic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02001533A EP1331690B1 (fr) 2002-01-23 2002-01-23 Arrangement d'antenne pour station de base à faisceau ajustable

Publications (2)

Publication Number Publication Date
EP1331690A1 EP1331690A1 (fr) 2003-07-30
EP1331690B1 true EP1331690B1 (fr) 2006-04-19

Family

ID=8185329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02001533A Expired - Lifetime EP1331690B1 (fr) 2002-01-23 2002-01-23 Arrangement d'antenne pour station de base à faisceau ajustable

Country Status (4)

Country Link
US (1) US20030171131A1 (fr)
EP (1) EP1331690B1 (fr)
AT (1) ATE323953T1 (fr)
DE (1) DE50206457D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0416645A (pt) * 2003-11-24 2007-01-16 Interdigital Tech Corp método e aparelho para utilizar antena de feixe direcional em unidade de transmissão e recepção sem fio
US8055265B2 (en) * 2005-06-30 2011-11-08 Telecom Italia S.P.A. Method and system for selecting radiation diagrams of antennas for mobile-radio communication networks
CN109478917A (zh) * 2016-05-18 2019-03-15 瑞典爱立信有限公司 用于管理通过第二通信装置所进行以用于信号的传输的波束形成的第一通信装置及由其执行的方法
EP3518587B1 (fr) * 2018-01-26 2022-04-06 Nokia Solutions and Networks Oy Régulation des puissances de transmission à partir de noeuds
EP3864772A4 (fr) * 2018-10-09 2022-06-15 Telefonaktiebolaget LM Ericsson (publ) Procédé et appareil de commande de puissance

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2281176B (en) * 1993-08-12 1998-04-08 Northern Telecom Ltd Base station antenna arrangement
EP0998156A3 (fr) * 1994-03-17 2000-05-24 Endlink, Inc. Système de communication radiocelluloire multi-function sectorisé
GB9417318D0 (en) * 1994-08-27 1994-10-19 Philips Electronics Uk Ltd Microwave cellular communications system and adaptable microwave transmitter
US6246674B1 (en) * 1997-01-27 2001-06-12 Metawave Communications Corporation Antenna deployment sector cell shaping system and method
US6900775B2 (en) * 1997-03-03 2005-05-31 Celletra Ltd. Active antenna array configuration and control for cellular communication systems
US6064659A (en) * 1998-07-10 2000-05-16 Motorola, Inc. Method and system for allocating transmit power to subscriber units in a wireless communications system
US6148217A (en) * 1998-08-19 2000-11-14 Telefonaktiebolaget Lm Ericsson Method for adjusting the gain of an antenna system
US6490460B1 (en) * 1998-12-01 2002-12-03 Qualcomm Incorporated Forward and reverse link power control using position and mobility information
US6539010B1 (en) * 1999-10-28 2003-03-25 Telefonaktiebolaget Lm Ericsson (Publ) Downlink power control and adaptive beamforming for half-rate radiocommunication systems

Also Published As

Publication number Publication date
ATE323953T1 (de) 2006-05-15
EP1331690A1 (fr) 2003-07-30
US20030171131A1 (en) 2003-09-11
DE50206457D1 (de) 2006-05-24

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