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公开(公告)号：EP0962112A1
公开(公告)日：1999-12-08
申请号：EP98903043.0
申请日：1998-02-11
发明人： KANERVA, Mikko , VAINIKKA, Jari , RÄSÄNEN, Juha , AALTO, Risto
摘要： The invention relates to a handover method in a mobile communication system in which error correction of a radio signal can be arranged with different protection levels. The method comprises measuring the signal level and/or quality of base stations (BTS) in a mobile station (MS), the signal quality and level of the mobile station (MS) at the base station (BTS) is measured, comparing measurements results thus obtained and other variables of the connection with handover criteria, and handover is performed from the source cell to the target cell, when the handover criteria are met. The invention is characterized by determining at least one handover criterion depending on error correction of the radio connection. The invention further relates to a mobile communication system for performing handover.
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2.发明公开
公开(公告)号：EP0953266A1
公开(公告)日：1999-11-03
申请号：EP97900216.0
申请日：1997-01-07
发明人： RÄSÄNEN, Juha
摘要： The invention relates to an interworking function and a data transmission method in a mobile network comprising transparent data services employing different rates and bearer services. The interworking function (IWF) is connected, in an end-to-end data connexion, between a transparent traffic channel leg in the mobile network and a traffic channel leg in the fixed telecommunication network. If the fixed network traffic channel leg utilizes a higher data rate (R2) than the mobile network transparent traffic channel leg (R1), the interworking function (IWF) buffers data in a data buffer (31) and uses flow control towards the fixed network. This enables the mobile network to support towards the fixed network a nominal user rate that is higher than the highest nominal user rate in the mobile network.
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公开(公告)号：EP0808537A1
公开(公告)日：1997-11-26
申请号：EP96941671.0
申请日：1996-12-10
发明人： RÄSÄNEN, Juha
CPC分类号： H04L47/14 , H04J3/0626 , H04L29/06 , H04L47/10 , H04L47/266 , H04L47/30 , H04L47/40 , H04L69/324 , H04W88/08
摘要： The invention relates to a rate adaptation method and equipment in a telecommunication system for data transmission employing a frame-structured data transmission protocol (RLP) between the telecommunication equipment (IWF, TAF) of the transmitting party and the telecommunication equipment (TAF, IWF) of the receiving party via a non-uniform non-transparent traffic channel or set of traffic channels consisting of a traffic channel section of a higher capacity and a traffic channel section of a lower capacity. The interface between the high capacity and the low capacity traffic channel section is provided with rate adaptation equipment that consists of a data buffer (51) and data buffer control (52). The data buffer (51) buffers the frames received from the high capacity traffic channel section before they are transmitted to the low capacity traffic channel section. The data buffer control (52, 53) adjusts the filling level of the data buffer (51) by activating, if necessary, data flow control according to the data transmission protocol in the telecommunication equipment (IWF, TAF) of the transmitting party.
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公开(公告)号：EP0759247A1
公开(公告)日：1997-02-26
申请号：EP96904119.0
申请日：1996-03-06
发明人： RÄSÄNEN, Juha
CPC分类号： H04N1/33323 , H04L1/0009 , H04L2001/0096 , H04N1/00106 , H04N1/00108 , H04N1/33353 , H04N2201/3335
摘要： A digital mobile communication system comprises a mobile station (MS) with a facsimile adapter (2), a first telefax terminal (1) connected to the adapter, a mobile network (BSS, MSC), an interworking unit (32) with a second facsimile adapter (33). A high-speedtransparent rate-adapted facsimile connection is set up between the telefax terminals. The number of parallel traffic channels (ch0-chn) allocated to the high-speed data connection is such that the maximum data rate of the data connection is higher than the allowed maximum data rate of the telefax terminals (1, 10). The telefax terminals may negotiate the facsimile data rate. The second facsimile adapter (33) monitors the negociation and selects, on the basis of the negociated facsimile data rate, the most effective channel coding available for the data connection.
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公开(公告)号：EP0852885A1
公开(公告)日：1998-07-15
申请号：EP96931826.0
申请日：1996-09-25
发明人： RÄSÄNEN, Juha
IPC分类号： H04W28
CPC分类号： H04W28/22
摘要： The present invention generally relates to data transmission services in mobile communication systems. A mobile subscriber may typically be entitled to different kinds of tele and bearer services. Presently, each user data rate is an independent bearer service. This means that there is a vast number of bearer services, which causes problems for both the network operators and the mobile subscribers. According to the invention, the number of bearer services is reduced by defining the bearer service to cover several data rates, and by negotiating, at the call set-up stage, the data rate to be used by the data call in the bearer service between the mobile station (MS) and the mobile communication network (MSC). The next step is to negotiate the data rate between the mobile communication network (MSC) and the fixed network, such as PSTN or ISDN. Then, if required, the data rate of the mobile communication network and the radio channel resources are adapted to the data rate used towards the fixed network.
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公开(公告)号：EP0801853A2
公开(公告)日：1997-10-22
申请号：EP95939304.0
申请日：1995-12-08
发明人： RÄSÄNEN, Juha
CPC分类号： H04W72/044 , H04B7/2646 , H04B7/2659 , H04L2001/0096 , H04W28/06 , H04W88/14 , H04W92/02
摘要： In a mobile communication system according to the invention two or more parallel traffic channels are allocated for high-speed data transmission over the radio path. Different channel numbers (ch0, ch1, ch2, ch3) are assigned to these parallel traffic channels for the duration of the connection. The data of a high-speed data signal is inserted at the distribution point of the transmission end (Tx) into frames each of which is provided with a channel number indicating the parallel traffic channel used for the transmission. The frames transmitted in a traffic channel always contain the same channel number during the whole call. The frames are divided into parallel traffic channel in the sequential order according to the channel numbering. At the reception end (Rx) the dta contained in the frames is reassembled into a high-speed data signal in the sequential order according to the channel numbers in the frames. Additionally, frame numbering may be used within each of the traffic channels so that at least two successive frames always have a different frame number (fr0, fr1). As a consequence, the allowed delay offset between the traffic channels will increase with the number of the frame numbers, and the order of the frames will be maintained under any circumstances.
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7.发明公开METHOD AND EQUIPMENT FOR TRANSMITTING TERMINAL INTERFACE USER DATA AND STATUS INFORMATION 失效方法和设备终端接口的传送用户数据和信息状态
公开(公告)号：EP0938797A2
公开(公告)日：1999-09-01
申请号：EP97944922.0
申请日：1997-10-17
发明人： RÄSÄNEN, Juha
CPC分类号： H04L29/06 , H04J3/06 , H04J3/12 , H04L69/324
摘要： The invention relates to a mobile system in which the radio interface rate of a traffic channel and the intermediate rate of a transmission channel restrict the number of bits available for the transmission of terminal interface statuses (S), network independent clocking (N) and subchannel numbering (#) of a multichannel data link. In the invention the bits form a subframe (n, ..., n+10), and the status and control information are multiplexed inside successive subframes in a superframe structure (SUPERFRAME). In other words, the capacity of the bits available for the control information is shared by various kinds of control information by means of the superframe structure.
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公开(公告)号：EP0935902A1
公开(公告)日：1999-08-18
申请号：EP98903044.0
申请日：1998-02-11
发明人： KANERVA, Mikko , VAINIKKA, Jari , RÄSÄNEN, Juha , AALTO, Risto
摘要： The invention relates to a handover method in a mobile communication system in which error correction of a radio signal can be arranged with different protection levels. The method comprises measuring the signal level and/or quality of neighbouring base stations (BTS) at a receiver of a mobile station (MS), comparing the measurement results thus obtained and other variables of the connection with handover criteria, and performing a handover from the source cell to the target cell, when the pre-set handover criteria are met. The method of the invention is characterized by determining at least one error connection possible for the connection in a potential target cell for the handover, determining at least one handover criterion on the basis of the determined error correction of the potential target cell, and setting the error correction of the connection in the target cell (BTS2) as said error correction of the base station of the target cell. The invention further relates to a mobile communication system for performing handover.
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公开(公告)号：EP0861550A1
公开(公告)日：1998-09-02
申请号：EP96938242.0
申请日：1996-11-13
发明人： RÄSÄNEN, Juha
CPC分类号： H04B7/18523 , H04L29/06 , H04L69/324
摘要： The invention relates to an asynchronous data transmission when the maximum data rate of the traffic channel equals one of the single user data rates at the terminal interface. Such a situation may occur for example when a satellite system is connected as a base station system to a mobile system. A mobile station (MS) removes a predetermined number of start and stop bits (START, STOP) from between the asynchronous data characters. The mobile station then concatenates the asynchronous data characters (CHARACTER 1-N) without start and stop bits, and the terminal interface status information (OVERHEAD INFO) into a protocol data packet beginning with a start bit (START) and ending with a stop bit (STOP). The mobile station transmits the protocol data packet through a synchronous satellite traffic channel or set of traffic channels to a land earth station. The land earth station extracts the asynchronous data characters and the terminal interface status information from the protocol data unit.
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公开(公告)号：EP0861532A1
公开(公告)日：1998-09-02
申请号：EP96938241.0
申请日：1996-11-13
发明人： RÄSÄNEN, Juha
CPC分类号： H04B7/18578
摘要： The invention relates to a synchronous data transmission when the maximum data rate of the traffic channel equals one of the user data rates at the terminal interface. Such a situation may occur for example when a satellite system is connected as a base station system to a mobile system. A mobile station (MS) inserts the terminal interface status information (STATUS) in the redundant parts (REDUNDANT) of the protocol data units (PDU) of the transmission protocol used at the terminal interface and transmits the protocol units through a satellite traffic channel to a land earth station (LES). The land earth station (LES) is arranged to extract said status information from the protocol data units and to restore the original redundancy to the protocol data units.
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