公开(公告)号：EP3091476A1

公开(公告)日：2016-11-09

申请号：EP15166768.0

申请日：2015-05-07

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich-Alexander-Universität Erlangen-Nürnberg

发明人： Elsaid Ibrahim, Hazem ,  Kenawy, Hamed ,  Robert, Jörg ,  Heuberger, Albert ,  Strauss, Wolfram

IPC分类号： G06K7/10

摘要： A reader for wirelessly receiving a signal from a tag, the signal comprising a portion on a first side, a portion on a second side and a synchronization sequence to be detected between the first and the second side, wherein the portion on the first side, the synchronization sequence and the portion on the second side are serially arranged with each other, comprises a processor. The processor is configured for storing the received signal, for detecting the synchronization sequence in the received signal, for calculating a transmission characteristic between the tag and the reader, using the portion of the received signal on the first side and for extracting a payload information from the portion of the received signal on the second side, using the calculated transmission characteristic.

摘要翻译： 一种用于从标签无线地接收信号的读取器，所述信号包括第一侧上的部分，第二侧的部分以及在第一和第二侧之间要被检测的同步序列，其中第一侧上的部分， 同步序列和第二侧的部分彼此串联布置，包括处理器。 处理器被配置为存储用于检测接收信号中的同步序列的接收信号，用于使用第一侧的接收信号的部分来计算标签和读取器之间的传输特性，并从 使用所计算的传输特性在第二侧的接收信号的部分。

公开(公告)号：EP3091477B1

公开(公告)日：2017-09-20

申请号：EP15166802.7

申请日：2015-05-07

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich-Alexander-Universität Erlangen-Nürnberg

发明人： Elsaid Ibrahim, Hazem ,  Kenawy, Hamed ,  Robert, Jörg ,  Heuberger, Albert ,  Strauss, Wolfram

IPC分类号： G06K7/10

CPC分类号： G06K7/10069 ,  G06K7/10019 ,  G06K7/10029 ,  G06K7/10039 ,  G06K7/10089

摘要： Embodiments provide an RFID reader. The RFID reader comprises a collision detector, a decoder and a frame length adjuster. The collision detector is configured to detect for each slot of a plurality of slots of a current frame, in which a collision of signals transmitted by at least two RFID tags occurred, a signal property of a signal of the signals transmitted by at least two RFID tags. The decoder is configured to decode for the slot in which the collision is detected the signal of the signals transmitted by the at least two RFID tags using the detected signal property, wherein a collision recover probability describing a probability that the decoder can accurately decode the one signal depends on a signal-to-noise ratio (SNR) of the current frame. The frame length adjuster is configured to adjust a frame length of a subsequent frame in dependence on the collision recover probability.

摘要翻译： 实施例提供一种RFID阅读器。 RFID读取器包括碰撞检测器，解码器和帧长度调节器。 碰撞检测器被配置为检测当前帧的多个槽的每个槽，其中发生由至少两个RFID标签发送的信号的碰撞，由至少两个RFID发送的信号的信号的信号属性 标签。 解码器被配置为使用检测到的信号属性对检测到碰撞的时隙解码由至少两个RFID标签发送的信号的信号，其中描述解码器可以准确地解码一个 信号取决于当前帧的信噪比（SNR）。 帧长度调整器被配置为根据碰撞恢复概率来调整后续帧的帧长度。

公开(公告)号：EP3091477A1

公开(公告)日：2016-11-09

申请号：EP15166802.7

申请日：2015-05-07

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich-Alexander-Universität Erlangen-Nürnberg

发明人： Elsaid Ibrahim, Hazem ,  Kenawy, Hamed ,  Robert, Jörg ,  Heuberger, Albert ,  Strauss, Wolfram

IPC分类号： G06K7/10

CPC分类号： G06K7/10069 ,  G06K7/10019 ,  G06K7/10029 ,  G06K7/10039 ,  G06K7/10089

摘要： Embodiments provide an RFID reader. The RFID reader comprises a collision detector, a decoder and a frame length adjuster. The collision detector is configured to detect for each slot of a plurality of slots of a current frame, in which a collision of signals transmitted by at least two RFID tags occurred, a signal property of a signal of the signals transmitted by at least two RFID tags. The decoder is configured to decode for the slot in which the collision is detected the signal of the signals transmitted by the at least two RFID tags using the detected signal property, wherein a collision recover probability describing a probability that the decoder can accurately decode the one signal depends on a signal-to-noise ratio (SNR) of the current frame. The frame length adjuster is configured to adjust a frame length of a subsequent frame in dependence on the collision recover probability.

摘要翻译： 的实施方案提供RFID读写器。 所述RFID读取器包括冲突检测器，解码器和帧长度调节。 冲突检测器被配置为检测由至少两个RFID mitted当前帧的时隙的多元化，其中的反式信号的碰撞由至少两个RFID标签mitted发生，该信号的反式的信号的信号属性的每个时隙 标签。 解码器被配置进行解码，以便在其中碰撞检测通过使用检测到的信号属性的至少两个RFID标签mitted信号反式的信号的时隙，worin碰撞恢复概率描述的概率并解码器可以正确地设定解码所述一个 信号依赖于当前帧的信噪比（SNR）。 帧长度调整器被配置以调节随后的帧的帧在长度上的依赖性冲突概率恢复。