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    • 2. 发明授权
    • Timing of handover
    • 交接时间
    • US06456847B1
    • 2002-09-24
    • US09457918
    • 1999-12-09
    • Harri LiljaSeppo HämäläinenKari Pehkonen
    • Harri LiljaSeppo HämäläinenKari Pehkonen
    • H04Q720
    • H04W36/06
    • The invention relates to a radio system and a method of timing an interfrequency handover in a WCDMA cellular radio system where data transmission between a terminal equipment and a base station employs several adjacent alternative frequency bands, and which comprises several different base stations the coverage areas of which overlap at least partly, the base stations utilizing frequency band groups that differ from one another and that are situated next to one another in the frequency range, in which system a terminal equipment communicates with a first base station on a first frequency band and measures the strength of a first signal it has received from the base station, and wherein the terminal equipment measures the strength of a second signal transmitted by a second base station on a second, adjacent frequency band. In order to perform a handover at a correct moment, the terminal equipment compares the measurement results of the first and the second signal, and if the second signal exceeds the first signal by a given threshold value, the terminal equipment signals a handover request to the first base station.
    • 本发明涉及无线电系统和定时在WCDMA蜂窝无线电系统中定时切换的方法,其中终端设备和基站之间的数据传输采用几个相邻的替代频带,并且其包括几个不同的基站,覆盖区域 其至少部分地与所述基站利用彼此不同并且在频率范围内彼此相邻的频带组,基站在终端设备与第一频带上的第一基站进行通信,并且测量 其从基站接收到的第一信号的强度,并且其中终端设备测量由第二基站在第二相邻频带上发送的第二信号的强度。 为了在正确的时刻执行切换,终端设备比较第一和第二信号的测量结果,并且如果第二信号超过给定阈值的第一信号,则终端设备向切换请求发信号 第一基站。
    • 8. 发明授权
    • Data transmission method, and transmitter
    • 数据传输方式和发射机
    • US5949790A
    • 1999-09-07
    • US930856
    • 1997-12-02
    • Kari PehkonenKari Rikkinen
    • Kari PehkonenKari Rikkinen
    • H03M13/23H04L1/00H04J3/22
    • H04L1/0065H04L1/007H04L1/0072
    • The invention relates to a data transmission method in a wireless data transmission system where signals with one or more data rates and quality levels are transmitted simultaneously. In order for it to be possible to transmit information on the radio path at different rates and quality requirements, the transmitter according to the invention comprises forward error correction coders (206, 208) for carrying out outer coding for at least some of the signals to be transmitted so that all the signals to be transmitted have a common quality level, a multiplexer (214) for combining the signals to be transmitted into frames having a given length, a forward error correction coder (220) for carrying out inner coding for the frames to be transmitted, and a mechanism (222) for repeating or deleting symbols in each frame, if necessary, so that the length of the symbols or each frame equals that of a multifold of a time interval that is known and essentially shorter than the symbol length. The transmitter according to the invention further comprises control logic (254) for adjusting the transmitting power used during transmission of each frame proportionally to the number of symbols each frame had prior to symbol repetition.
    • PCT No.PCT / FI95 / 00632 Sec。 371日期1997年12月2日第 102(e)日期1997年12月2日PCT提交1995年11月15日PCT公布。 公开号WO96 / 32781 日期:1996年10月17日本发明涉及无线数据传输系统中的数据传输方法,其中具有一个或多个数据速率和质量级别的信号被同时传输。 为了能够以不同的速率和质量要求在无线电路径上发送信息,根据本发明的发射机包括用于对至少一些信号执行外部编码的前向纠错编码器(206,208) 发送所有要发送的信号具有共同的质量级别,用于将要发送的信号组合到具有给定长度的帧中的多路复用器(214),用于执行内部编码的前向纠错编码器(220) 要发送的帧,以及用于在每个帧中重复或删除符号的机制(222),如果需要,使得符号或每个帧的长度等于已知的并且基本上短于 符号长度。 根据本发明的发射机还包括控制逻辑(254),用于在每个帧的传输期间按比例与每个帧在符号重复之前具有的符号的数量进行调整。
    • 10. 发明授权
    • Method for converting a signal data rate, and a transmitter
    • 用于转换信号数据速率的方法和发射机
    • US06332005B1
    • 2001-12-18
    • US09177246
    • 1998-10-22
    • Kari Pehkonen
    • Kari Pehkonen
    • H04L2701
    • H04L1/0068H04J3/22H04L1/0071H04L1/08
    • The invention relates to a method for converting a signal data rate and to a transmitter in a digital data transmission system, the transmitter comprising a number of data sources that generate a signal having a first data rate, and a coder for forming the signal into frames of a given length, which length corresponds to a second data rate, and a coder for grouping the signal into a first block the length of which corresponds to the first data rate. In order to convert the data rate flexibly, the transmitter comprises a coder, which calculates the difference between the frame and the number of symbols in the first block by subtracting the frame length from the number of symbols in the first block, which equalizes the difference by removing or repeating every ith symbol in the first block, i being determined as the nearest bigger or an equal integer when the number of symbols in the first block is divided by the absolute value of the difference that was calculated, which updates the number of the symbols that do not fit in the frame by subtracting therefrom the number of the symbols that have been repeated, and which forms the first block to consist of the symbols that have not been repeated or removed.
    • 本发明涉及一种用于在数字数据传输系统中转换信号数据速率和发射机的方法,所述发射机包括产生具有第一数据速率的信号的多个数据源,以及用于将信号形成帧的编码器 给定长度,其长度对应于第二数据速率;以及编码器,用于将信号分组成第一块,其长度对应于第一数据速率。 为了灵活地转换数据速率,发射机包括编码器,该编码器通过从第一块中的符号数减去帧长度来计算第一块中的帧和符号数之间的差异, 通过去除或重复第一块中的每个第i个符号,当第一个块中的符号数除以计算出的差的绝对值时,i被确定为最接近的较大或相等的整数, 通过从其中减去已经重复的符号的数量并且形成第一块以由未被重复或去除的符号组成的符号,不适合于帧中的符号。