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    • 1. 发明授权
    • Asymmetric data transmission for use in a multi-modulation environment
    • 用于多调制环境的非对称数据传输
    • US06377817B1
    • 2002-04-23
    • US09551012
    • 2000-04-18
    • Markus HakasteShkumbin HamitiHarri JokinenEero Nikula
    • Markus HakasteShkumbin HamitiHarri JokinenEero Nikula
    • H04B138
    • H04W28/18H04L1/0003H04L1/0009H04L1/0022H04L1/0038H04L27/0012Y02D70/1222Y02D70/1226
    • A data transmission method and system for circuit switched and other services that can be employed in TDMA-based systems, and that supports the use of one or several types of modulation (e.g., 8-PSK modulation), in addition to a “normal” modulation (e.g., GMSK modulation) on a radio interface. An additional modulation/channel coding (e.g., one based on 8-PSK) may be used in the downlink transmission, while the normal modulation/channel coding (e.g., one based on GMSK) may be used in the uplink transmissions, under a variety of different conditions. A first condition arises where the radio conditions allow the use of the additional modulation in both directions, but the mobile station transmitter does not support it. A second condition arises where the radio conditions allow the use of the additional modulation in both directions, and the mobile station supports it, but the user requests a downlink-biased or uplink-biased data transmission service. A third condition arises where the mobile station supports the use of the additional modulation in both directions, but the uplink (or downlink) radio conditions do not permit the use of the additional modulation (e.g., because of link budget limitations.) Also, a lower data rate may be desired on the uplink in order to reduce the power consumption of the mobile station, and/or in the downlink direction to avoid unnecessary interference. This is especially true in the case that one direction or the other has less data to transmit, and the high speed data transmission mode is not required (even if supported).
    • 一种用于电路交换和其他服务的数据传输方法和系统,其可以在基于TDMA的系统中使用,并且除了“正常”之外还支持使用一种或几种类型的调制(例如,8-PSK调制) 在无线电接口上进行调制(例如,GMSK调制)。 在下行链路传输中可以使用附加的调制/信道编码(例如,基于8-PSK的一个)编码(例如,基于GMSK的正常调制/信道编码)可以在上行链路传输中使用 的不同条件。 出现无线电条件允许在两个方向上使用附加调制的第一个条件,但移动台发射机不支持它。 出现第二个条件,其中无线电条件允许在两个方向上使用附加调制,并且移动台支持它,但是用户请求下行链路偏置或上行链路偏置的数据传输服务。 第三个条件出现在移动台支持在两个方向上使用附加调制,但是上行链路(或下行链路)无线电条件不允许使用附加调制(例如,由于链路预算限制)。另外,一个 为了降低移动台的功率消耗和/或在下行链路方向,为了避免不必要的干扰,在上行链路上可能希望较低的数据速率。 在一个方向或另一方向具有较少的传输数据的情况下尤其如此,并且不需要高速数据传输模式(即使被支持)。
    • 3. 发明授权
    • Method and receiver for receiving and decoding signals modulated with different modulation methods
    • 用于接收和解码用不同调制方式调制的信号的方法和接收机
    • US06690751B1
    • 2004-02-10
    • US09548650
    • 2000-04-13
    • Eero NikulaHarri Jokinen
    • Eero NikulaHarri Jokinen
    • H03M1312
    • H04L1/0038H04L1/0003H04L1/0032H04L1/0047H04L1/0054H04L1/0061H04L1/0071H04L27/0008H04L27/0012H04L27/2017H04L27/2067H04L27/22
    • A method is presented for demodulating and decoding a block of received digital information consisting of a number of subblocks. One of a predefined number of demodulation methods is selected for demodulating each subblock and each subblock is demodulated with the demodulation method selected for it. The subblocks constituting a block of digital information are combined between their demodulation and the decoding of the block of digital information. Soft decoding is used to decode the block of digital information, wherein each subblock is converted to a sequence of soft decoding values associated with certain probabilities of allowed state transitions in the decoding process. For each subblock it is determined, after its demodulation, whether the correct demodulation method was selected for it. A subblock for which it is found that the correct demodulation method was not selected is converted to a sequence of neutral soft decoding values indicating equal probabilities for all allowed state transitions in the decoding process.
    • 提出一种用于解调和解码由多个子块组成的接收数字信息块的方法。 选择预定数量的解调方法之一用于解调每个子块,并且以为其选择的解调方法解调每个子块。 构成数字信息块的子块在其解调和数字信息块的解码之间组合。 软解码用于解码数字信息块,其中每个子块被转换成与解码过程中允许的状态转换的某些概率相关联的软解码值序列。 对于每个子块,在其解调之后,确定是否为其选择了正确的解调方法。 发现没有选择正确的解调方法的子块被转换为在解码处理中指示所有允许状态转换的相等概率的中性软解码值序列。
    • 9. 发明授权
    • Method and arrangement for implementing minimum activity during discontinuous transmission
    • 在不连续传输过程中实现最小活动的方法和布置
    • US07706313B2
    • 2010-04-27
    • US10587820
    • 2004-01-30
    • Benoist SebireHarri Jokinen
    • Benoist SebireHarri Jokinen
    • G08C17/00H04J3/02
    • G10L19/012
    • A method and a device are considered for implementing minimum activity during discontinuous transmission in a telecommunication connection used to carry a service. The service is allowed to involve transmitting upper-level scheduled silence-breaking transmissions at predetermined regular intervals during otherwise silent periods. There is determined (407, 408, 409) a maximum length of a silent period that is longer than the predetermined regular intervals between upper-level scheduled silence-breaking transmissions. A Layer 2 entity of a protocol stack observes (411) the occurrence of silent periods and transmits (412) a dummy block over the telecommunication connection if the length of an observed silent period reaches said maximum length without an upper-level scheduled silence-breaking transmission having been transmitted.
    • 考虑在用于承载服务的电信连接中的不连续传输期间实现最小活动的方法和设备。 允许该服务涉及在其他静默期期间以预定的定期间隔传输上级预定的静音传输。 确定(407,408,409)无声期的最大长度大于上级预定静音断开传输之间的预定规则间隔。 协议栈的二层实体观察(411)无声期的发生,并且如果观察到的静默期的长度达到所述最大长度而没有上位预定的静默断开,则通过电信连接发送(412)虚拟块 传输已被传输。