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公开(公告)号：US5241685A
公开(公告)日：1993-08-31
申请号：US669865
申请日：1991-03-15
申请人： Roland Bodin , Arne Norefors
发明人： Roland Bodin , Arne Norefors
IPC分类号： H04W16/06
CPC分类号： H04W48/20 , H04W36/0083 , H04W36/30
摘要： In a mobile cellular radio system, load balancing is achieved by moving dynamically the borders between any two cells such that an overloaded cell becomes smaller and the neighboring cell larger. This is achieved by lowering the entering signal strength threshold for handoff to the neighboring cell and/or increasing the entering signal strength threshold for handoff from the neighboring cell. Thresholds are unique for any two cells.
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公开(公告)号：US06483919B1
公开(公告)日：2002-11-19
申请号：US09239700
申请日：1999-01-29
申请人： Lars-Göran Lund , Roland Bodin
发明人： Lars-Göran Lund , Roland Bodin
IPC分类号： H04L912
摘要： In a method and an arrangement for establishing an encrypted connection between a mobile station and a base transceiver station in a mobile telephone system, the base transceiver station makes sure, before forwarding a cipher mode command message to the mobile station that the mobile station is in multiple-frame-mode.
摘要翻译： 在移动电话系统中，在移动台和基站收发信机之间建立加密连接的方法和装置中，基地收发台在将移动台所在的移动台转发密码模式命令消息之前， 多帧模式。
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3.发明授权
公开(公告)号：US5926469A
公开(公告)日：1999-07-20
申请号：US747201
申请日：1996-11-12
申请人： Bengt Norstedt , Magnus Wester , Roland Bodin
发明人： Bengt Norstedt , Magnus Wester , Roland Bodin
CPC分类号： H04W76/045
摘要： A disconnect time in accordance with the Global System for Mobile (GSM) Phase 1 standard is reduced within a particular base station controller (BSC) serving a particular mobile station. In response to a Layer 2 Disconnect message from a first mobile station and after the expiration of the reduced disconnect timer, the serving BTS releases the indicated logical channel from the first mobile station and enables the connected base station control (BSC) to more efficiently allocate the released logical channel (SDCCH or TCH) to a second mobile station. Thereafter, additional Layer 2 Disconnect messages transmitted by the first mobile station are ignored and no acknowledging Disconnect Mode (DM) message is transmitted over the indicated logical channel. Thus, collision over the same logical channel between the first and second mobile stations is avoided and the second mobile station is able to communicate over the allocated logical channel.
摘要翻译： 在为特定移动台服务的特定基站控制器（BSC）内，根据全球移动系统（GSM）第1阶段标准的断开时间被减少。 响应于来自第一移动站的二层断开消息，并且在减少的断开定时器期满之后，服务BTS从第一移动站释放所指示的逻辑信道，并使得连接的基站控制（BSC）能够更有效地分配 释放的逻辑信道（SDCCH或TCH）到第二移动站。 此后，由第一移动台发送的附加的第2层断开消息被忽略，并且在所指示的逻辑信道上不发送确认断开模式（DM）消息。 因此，避免了在第一和第二移动站之间的相同逻辑信道上的冲突，并且第二移动站能够通过所分配的逻辑信道进行通信。
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4.发明授权
公开(公告)号：US5577047A
公开(公告)日：1996-11-19
申请号：US494952
申请日：1995-06-26
申请人： Bengt Persson , H.ang.kan Eriksson , Roland Bodin
发明人： Bengt Persson , H.ang.kan Eriksson , Roland Bodin
摘要： A method and system for performing macrodiversity or soft handover in TDMA radiocommunication systems are described. Half rate transmissions are used to provide additional diversity communication channels in systems having insufficient timeslots at full rate. The mobile station can receive the same information from and/or transmit the same information to a plurality of base stations to provide diversity combination and improve transmission quality. The mobile unit assists in making handover decisions by monitoring the signal strength of control channels transmitted by base stations in neighboring cells.
摘要翻译： 描述了用于在TDMA无线电通信系统中执行宏分集或软切换的方法和系统。 半速率传输用于在具有全速率的时隙不足的系统中提供附加分集通信信道。 移动台可以从多个基站接收相同的信息和/或发送相同的信息，以提供分集组合并提高传输质量。 移动单元通过监视由相邻小区中的基站发送的控制信道的信号强度来协助进行切换决定。
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公开(公告)号：US5987139A
公开(公告)日：1999-11-16
申请号：US765269
申请日：1997-02-18
申请人： Roland Bodin
发明人： Roland Bodin
CPC分类号： H04W12/02 , H04L9/0656 , H04L2209/80
摘要： The method involves modifying an encryption key (Kc) in accordance with a given algorithm and in dependence on the ordinal number of a time slot to obtain a modified encryption key. A modified pseudo-random sequence is formed from the resultant modified encryption key. The modification is carried out in accordance with the aid of an encryption algorithm. A logical operation is performed on the modified pseudo-random sequence and for each block of the non-encrypted information. Preferably the operation is performed on the information block that belongs to the time slot whose ordinal number has been used to form the modified encryption key. As an additional option, the frame number can also be modified in accordance with a given algorithm and in dependence on the ordinal number of the relevant time slot. The method provides reliable encryption in TDMA mobile radio systems in which two or more time slots are used for one and the same transmission without requiring any substantial changes to signaling protocol and/or system equipment.
摘要翻译： PCT No.PCT / SE96 / 01156 Sec。 371日期1997年2月18日 102（e）1997年2月18日PCT PCT 1996年9月18日PCT公布。 公开号WO97 / 12461 日期1997年4月3日该方法包括根据给定算法修改加密密钥（Kc），并且依赖于时隙的序数来获得修改的加密密钥。 经修改的加密密钥形成修改后的伪随机序列。 根据加密算法进行修改。 对修改的伪随机序列和未加密信息的每个块执行逻辑运算。 优选地，对属于其序号用于形成经修改的加密密钥的时隙的信息块执行操作。 作为附加选项，也可以根据给定的算法并根据相关时隙的序数来修改帧号。 该方法在TDMA移动无线电系统中提供可靠的加密，其中两个或更多个时隙用于一个和相同的传输，而不需要对信令协议和/或系统设备进行任何实质的改变。
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公开(公告)号：US5257399A
公开(公告)日：1993-10-26
申请号：US618963
申请日：1990-11-28
申请人： Harald Kallin , Roland Bodin
发明人： Harald Kallin , Roland Bodin
CPC分类号： H04W76/02 , H04W72/08 , H04W74/0866
摘要： A method and apparatus for use in a cellular mobile radio telephone system for determining which of one of several mobile generated transmissions received in a mobile switching center, sent from the same mobile station via more than one base station, should be accepted. A determination is made based on the relative signal strengths of the signals received by the base stations and by the relative time of occurrence of the mobile generated transmissions.
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7.发明授权
公开(公告)号：US6091958A
公开(公告)日：2000-07-18
申请号：US23163
申请日：1998-02-13
申请人： Bengt Bergkvist , Roland Bodin
发明人： Bengt Bergkvist , Roland Bodin
摘要： The present invention relates to a method of sending to an unknown switching centre that serves a given mobile station a command concerning said mobile station. The command is sent by using a previously known short message service, e.g. SMS in the GSM-system. The command may constitute a request for the switching centre to determine the position of the mobile station and is sent from a positioning node outside the mobile communications system. The invention also relates to a method of sending data from the switching centre to the positioning node. The invention also relates to a switching centre and also to a system for carrying out the method.
摘要翻译： 本发明涉及一种发送给给定移动台的未知交换中心的方法，该命令涉及所述移动台。 该命令通过使用先前已知的短消息服务来发送，例如， GSM系统中的短信。 该命令可以构成对交换中心确定移动台的位置并从移动通信系统外部的定位节点发送的请求。 本发明还涉及从交换中心向定位节点发送数据的方法。 本发明还涉及一种交换中心，还涉及一种用于执行该方法的系统。
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公开(公告)号：US5884192A
公开(公告)日：1999-03-16
申请号：US889808
申请日：1997-07-08
申请人： Jonas Karlsson , Ulf Forsen , Roland Bodin
发明人： Jonas Karlsson , Ulf Forsen , Roland Bodin
CPC分类号： H04B7/0837 , H01Q25/00 , H01Q3/26
摘要： An antenna configuration increases the sensitivity of a base station by providing a plurality of antennas each of which cover a disjunct or partially disjunct area of a larger cell. A receiver for each antenna receives signals transmitted from mobile stations. Equalizers are attached to each receiver for correcting the received signals. A combiner then combines the received signals from the different antennas so as to form an estimate of the transmitted signal.
摘要翻译： 天线配置通过提供多个天线来增加基站的灵敏度，每个天线覆盖较大小区的分离或部分分离区域。 每个天线的接收机接收从移动台发送的信号。 均衡器附接到每个接收器以校正接收到的信号。 然后，组合器组合来自不同天线的接收信号，以形成发射信号的估计。
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9.发明授权Method of encrypting information in a TDMA mobile radio system using a modified pseudo-random sequence 有权使用修改的伪随机序列在TDMA移动无线电系统中加密信息的方法公开(公告)号：US06973189B1
公开(公告)日：2005-12-06
申请号：US09410044
申请日：1999-10-01
申请人： Roland Bodin
发明人： Roland Bodin
CPC分类号： H04W12/02 , H04L9/0656 , H04L2209/80
摘要： The method involves modifying an encryption key (Kc) in accordance with a given algorithm and in dependence on the ordinal number of a time slot to obtain a modified encryption key. A modified pseudo-random sequence is formed from the resultant modified encryption key. The modification is carried out in accordance with the aid of an encryption algorithm. A logical operation is performed on the modified pseudo-random sequence and for each block of the non-encrypted information. Preferably the operation is performed on the information block that belongs to the time slot whose ordinal number has been used to form the modified encryption key. As an additional option, the frame number can also be modified in accordance with a given algorithm and in dependence on the ordinal number of the relevant time slot. The method provides reliable encryption in TDMA mobile radio systems in which two or more time slots are used for one and the same transmission without requiring any substantial changes to signaling protocol and/or system equipment.
摘要翻译： 该方法包括根据给定的算法并根据时隙的序数修改加密密钥（Kc）以获得修改的加密密钥。 经修改的加密密钥形成修改后的伪随机序列。 根据加密算法进行修改。 对修改的伪随机序列和未加密信息的每个块执行逻辑运算。 优选地，对属于其序号用于形成经修改的加密密钥的时隙的信息块执行操作。 作为附加选项，也可以根据给定的算法并根据相关时隙的序数来修改帧号。 该方法在TDMA移动无线电系统中提供可靠的加密，其中两个或更多个时隙用于一个和相同的传输，而不需要对信令协议和/或系统设备进行任何实质的改变。
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10.发明授权Method and system for desynchronizing overhead messages in a radiocommunication system 失效用于在无线电通信系统中去同步开销消息的方法和系统
公开(公告)号：US5701592A
公开(公告)日：1997-12-23
申请号：US358316
申请日：1994-12-19
申请人： Harald Kallin , Roland Bodin
发明人： Harald Kallin , Roland Bodin
CPC分类号： H04W72/1268 , H04W48/12 , H04W72/1278
摘要： A method and system for controlling overhead information transmission in a radicommunication system is described. By desynchronizing information trasmitted in two streams on a control channel, loads on the reverse control channel are more evenly distributed to minimize overload situations. Similarly, blocked calls can be prevented by judicious transmission timing of control filler messages relative to the overhead message trains. The relative timing of various registration parameters is also described to reduce extraneous registrations.
摘要翻译： 描述了用于控制通信系统中的开销信息传输的方法和系统。 通过在控制信道上同步两个流中传输的信息，反向控制信道上的负载更均匀地分布以最小化过载情况。 类似地，可以通过相对于开销消息列的控制填充消息的明智的传输定时来防止阻塞的呼叫。 还描述了各种注册参数的相对定时以减少外部注册。
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