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1. 发明授权

US06628676B1 Systems and methods for communicating messages among cascaded devices by bit shifting 有权
标题翻译：用于通过位移动在级联设备之间传送消息的系统和方法
公开(公告)号：US06628676B1
公开(公告)日：2003-09-30
申请号：US09337448
申请日：1999-06-21
申请人： Ossi I. Grohn , Anthony S. Fugaro
发明人： Ossi I. Grohn , Anthony S. Fugaro
IPC分类号： H04J306
CPC分类号： H04B7/2656 , H04W88/085
摘要： Messages are communicated among a plurality of devices that are serially connected, such that a preceding device is connected to a succeeding device, by receiving a message from a preceding device, bit shifting the message that was received from the preceding device and transmitting the bit shifted message that was received from the preceding device to a succeeding device. When a message is received from a succeeding device, it also is bit shifted and the bit shifted message that was received from the succeeding device is transmitted to the preceding device. Preferably, messages that are received from the preceding device are shifted in a first direction such as left by a predetermined number of bits and messages that are received from the succeeding device are shifted in a second direction that is opposite the first direction such as right by the predetermined number of bits. Preferably, the predetermined number of bits corresponds to at least one TDMA slot. Prior to shifting the message that was received from the preceding device left by the predetermined number of bits, the predetermined number of leftmost bits is extracted from the message that was received from the preceding device. Moreover, after shifting the message that was received from the succeeding device right by the predetermined number of bits, the predetermined number of bits is inserted into the leftmost part of the message that was received from the succeeding device. Accordingly, each of the cascaded devices preferably extracts a downlink message from at least the first TDMA slot and then shifts the downlink message to the left by at least one slot. Similarly, each of the cascaded devices shifts an uplink TDMA message to the right by at least one slot and inserts its message into at least the first slot.
摘要翻译：在串行连接的多个设备之间传送消息，使得先前的设备通过从前一设备接收到消息，对从先前设备接收到的消息进行位移位并发送位移从上一个设备接收的消息到后续设备。当从后续设备接收到消息时，它也被位移，并且从后续设备接收到的位移消息被发送到前一个设备。优选地，从先前设备接收到的消息在诸如左边预定位数的第一方向上移位，并且从后续设备接收到的消息在与第一方向相反的第二方向上偏移，例如右预定位数。优选地，预定数量的比特对应于至少一个TDMA时隙。在将从先前设备接收到的消息移动了预定位数之前，从从先前设备接收到的消息中提取预定数量的最左位。此外，在将从后续设备接收到的消息右移到预定位数之后，将预定数量的比特插入到从后续设备接收的消息的最左部分中。因此，每个级联设备优选地从至少第一TDMA时隙提取下行链路消息，然后将下行链路消息向左移动至少一个时隙。类似地，每个级联设备将上行链路TDMA消息向右移动至少一个时隙，并将其消息插入至少第一时隙。

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