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1.发明公开METHOD OF INCREASING SIGNAL QUALITY BY ADJUSTING THE SPREADING RATIO IN A CDMA CELLULAR RADIO SYSTEM 失效通过适应VERSPREIZUNGSRATIO在蜂窝电话CDMA无线设备信号质量改进方法
公开(公告)号：EP0722636A1
公开(公告)日：1996-07-24
申请号：EP94927688.0
申请日：1994-10-03
发明人： KESKITALO, Ilkka , KIEMA, Arto , SAVUSALO, Jari , SIIRA, Anne , KÄRKKÄINEN, Ari , UOLA, Risto , KÜHN, Ingo , HOTTINEN, Ari , JOLMA, Petri
CPC分类号： H04B1/707 , H04J13/004 , H04J13/10
摘要： The invention relates to a CDMA cellular radio system, comprising in each cell at least one base station (BTS) connected to the mobile stations (MS1, MS2) in the cell, in which system a data signal of each user generated with a given bit rate is multiplied by a spreading code generated with a bit rate considerably higher than the bit rate of the data signal, the ratio between the data signal and the spreading code forming the spreading ratio of the connection, and in which system signals multiplied by the spreading codes of several users are transmitted on the same frequency band. To improve the quality of a connection between a mobile station and a base station, the spreading ratio of the connection between the base station (BTS) and the mobile station (MS1, MS2) is adjusted during the connection on the basis of signal quality.
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公开(公告)号：EP0739575B1
公开(公告)日：1999-08-18
申请号：EP94917006.2
申请日：1994-06-06
发明人： KIEMA, Arto , KESKITALO, Ilkka , JOLMA, Petri , SAVUSALO, Jari
CPC分类号： H04B1/7115 , H04B1/709 , H04B1/7117 , H04B2201/7071 , H04W24/00 , H04W88/08
摘要： The invention relates to a rake-type CDMA base station receiver equipment, comprising a number of correlators (20) each having a received signal as its input, a number of diversity combiners (22, 23, 24) and means (22, 23, 24) for measuring the quality of the received signal. To reduce the number of correlators and diversity combiners, the receiver equipment further comprises means (21) for switching the correlators to the different combiners, and means (25) for controlling the switching means (21) on the basis of data sent from the means (22, 23, 24) for measuring the quality of the received signal or on the basis of the capacity loading of the base station receiver equipment.
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公开(公告)号：EP0739575A1
公开(公告)日：1996-10-30
申请号：EP94917006.0
申请日：1994-06-06
发明人： KIEMA, Arto , KESKITALO, Ilkka , JOLMA, Petri , SAVUSALO, Jari
CPC分类号： H04B1/7115 , H04B1/709 , H04B1/7117 , H04B2201/7071 , H04W24/00 , H04W88/08
摘要： The invention relates to a rake-type CDMA base station receiver equipment, comprising a number of correlators (20) each having a received signal as its input, a number of diversity combiners (22, 23, 24) and means (22, 23, 24) for measuring the quality of the received signal. To reduce the number of correlators and diversity combiners, the receiver equipment further comprises means (21) for switching the correlators to the different combiners, and means (25) for controlling the switching means (21) on the basis of data sent from the means (22, 23, 24) for measuring the quality of the received signal or on the basis of the capacity loading of the base station receiver equipment.
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公开(公告)号：EP0750824A1
公开(公告)日：1997-01-02
申请号：EP95912271.0
申请日：1995-03-16
发明人： HOTTINEN, Ari , KESKITALO, Ilkka , KIEMA, Arto , JOLMA, Petri , KÜHN, Ingo , SAVUSALO, Jari , UOLA, Risto , SIIRA, Anne , KÄRKKÄINEN, Ari
摘要： The invention relates to a receiver, and a method for estimating received power in a cellular radio system comprising in each cell at least one base station (BTS1, BTS2) communicating with mobile stations (MS) within its coverage area, in which system mobile stations measure strength of the signal received from the base station, and report the measurement results to the base station. To improve power adjustment, a model describing the dynamic behaviour of the signal is created for the received power on each connection, said model being utilized for power adjustment as well as for taking handover decisions.
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5.发明公开
公开(公告)号：EP0746951A1
公开(公告)日：1996-12-11
申请号：EP95908966.0
申请日：1995-02-17
发明人： KESKITALO, Ilkka , KIEMA, Arto , SAVUSALO, Jari , JOLMA, Petri , SÄRKIOJA, Juha
CPC分类号： H04W52/281 , H04W4/90 , H04W52/08 , H04W52/146 , H04W52/242 , H04W52/265 , H04W52/343 , H04W76/50
摘要： PCT No. PCT/FI95/00082 Sec. 371 Date Aug. 19, 1995 Sec. 102(e) Date Aug. 19, 1996 PCT Filed Feb. 17, 1996 PCT Pub. No. WO95/24102 PCT Pub. Date Sep. 8, 1995The invention relates to a method for transmitting calls of different priorities in a cellular network which comprises in each cell at least one base station (10) communicating with subscriber terminals (11a-11d, 13) within its area, and in which network the base station transmits power control information to the terminal equipments, which may adjust their transmit power on the basis of the power control messages from the base station, the calls of the network having different levels of priority. In order to ensure the call establishment and the quality of calls with a high priority, the calls with a high priority use a higher transmit power than what is allowed for calls with a lower priority.
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6.发明公开
公开(公告)号：EP0725999A1
公开(公告)日：1996-08-14
申请号：EP94931048.0
申请日：1994-10-21
发明人： KESKITALO, Ilkka , KIEMA, Arto , SAVUSALO, Jari , JOLMA, Petri
CPC分类号： H04W52/24 , H04B1/7103 , H04B2201/70702 , H04W52/40
摘要： The invention relates to a mobile station and a method for eliminating multiple-access interference in a CDMA cellular radio system having cells (21) each comprising at least one base station (20) communicating (25) with mobile stations (24) residing in the cell and informing the mobile stations of at least one spreading code used in a neighbouring cell (23), the mobile stations measuring the code phase and power level of a channel (26) of the neighbouring cell using the known spreading code. To reduce the effect of multiple-access interference, the signal received at the mobile station (24) is utilized in the detection of the desired signal by using the code phase and power level of the measured channel (26) using the known spreading code of the neighbouring cell.
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公开(公告)号：EP0543835B1
公开(公告)日：1997-05-28
申请号：EP91913022.9
申请日：1991-07-24
发明人： SAVUSALO, Jari , JÄNTTI, Arto
CPC分类号： G01R29/10
摘要： The invention relates to a method and a device for supervising the condition of a receiving antenna by transmitting a radio-frequency measuring signal through an antenna line (2) to the antenna and by measuring (8) the magnitude of a measuring signal component reflected back from the antenna. To improve the measuring accuracy, the invention is characterized in that the same measuring signal is measured also when transmitted directly in the direction of the receiver and the condition of the antenna (1) is determined on the basis of the relative difference between the two measured signal magnitudes.
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公开(公告)号：EP0752189A1
公开(公告)日：1997-01-08
申请号：EP95912276.0
申请日：1995-03-20
发明人： HOTTINEN, Ari , KIEMA, Arto , LAAKSO, Timo , HÄKKINEN, Hannu , TUORINIEMI, Aimo , KESKITALO, Ilkka , JOLMA, Petri , KÜHN, Ingo , SAVUSALO, Jari , KÄRKKÄINEN, Ari , SIIRA, Anne , UOLA, Risto
CPC分类号： H04B1/7103 , H04B2201/70702 , H04B2201/709709 , H04W72/082
摘要： The invention relates to interference cancellation in a cellular CDMA network served by base stations. The method of the invention comprises receiving in a mobile station (MS) a CDMA signal transmitted by at least one base station (BTS2) of a neighbouring cell (B) in the network and defining the phase of the spread spectrum code of the signal transmitted by said at least one neighbouring base station (BTS2) and monitoring its signal strength. After this, the measurement results of the mobile station (MS) are transmitted via the base station which is serving it to the CDMA network which infers whether the mobile station interferes with the base stations (BTS2) of the neighbouring cells. If interference occurs, the neighbouring cell base stations (BTS2) are informed of the channel the interfering mobile station (MS) is using, and the information of the signal transmitted by the interfering mobile station (MS) is utilized by taking it into account in the receivers of signals transmitted by other mobile stations within the cell.
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9.发明公开
公开(公告)号：EP0709016A1
公开(公告)日：1996-05-01
申请号：EP94920488.0
申请日：1994-07-12
发明人： JOLMA, Petri , KESKITALO, Ilkka , KIEMA, Arto , SAVUSALO, Jari
CPC分类号： H04W52/0216 , H04W52/0245 , H04W52/50 , Y02D70/1222
摘要： PCT No. PCT/FI94/00321 Sec. 371 Date Jan. 11, 1996 Sec. 102(e) Date Jan. 11, 1996 PCT Filed Jul. 12, 1994 PCT Pub. No. WO95/02950 PCT Pub. Date Jan. 26, 1995Transmission power control of a mobile terminal unit in a cellular telecommunication system, in which: the base station informs the mobile units of its existence on a common control channel in a TDMA slot, at least one control channel is dedicated to the mobile terminals seeking connection, and the power level of the connection-seeking signal is dependent of the measured power level, downlink, from the base station.
摘要翻译： PCT号 PCT / FI94 / 00321秒。 371日期1996年1月11日二段。 102（e）中的日期1996年1月11日提交的PCT 1994年7月12日的PCT公布。 号 WO95 / 02950的PCT公布。 在蜂窝电信系统的移动终端单元的一月日期26 1995Transmission功率控制，其中：所述基站通知它的存在对一个TDMA时隙的公共控制信道中的移动单元中，至少一个控制信道专用于 移动终端寻求连接，并且连接求信号的功率电平是依赖于测量的功率电平，下行链路的，从所述基站。
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10.发明公开
公开(公告)号：EP0543835A1
公开(公告)日：1993-06-02
申请号：EP91913022.0
申请日：1991-07-24
发明人： SAVUSALO, Jari , JÄNTTI, Arto
IPC分类号： G01R29
CPC分类号： G01R29/10
摘要： L'invention se rapporte à un procédé et à un dispositif de contrôle de l'état d'une antenne réceptrice au moyen de la transmission d'un signal de mesure de radiofréquence par une ligne d'antenne (2) vers l'antenne et de la mesure (8) de l'intensité d'une composante de signal de mesure réfléchie depuis l'antenne. Afin d'augmenter l'exactitude de la mesure, l'invention est caractérisée par le fait que le même signal de mesure est mesuré également quand il est transmis directement dans le sens du récepteur et l'état de l'antenne est déterminé en se basant sur la différence relative entre les deux intensités de signaux mesurées.
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