摘要:
A transmission method for broadcast multicast services is disclosed. The method includes: in a cell that adopts frequency reuse, determining a frequency resource occupied by broadcast multicast service data transmitted by a broadcast multicast cell based on a multi-cell transmission mode; selecting a corresponding frequency resource from a frequency band that is occupied by a unicast cell adjacent to the broadcast multicast cell and has the same frequency resource as the determined frequency resource; transmitting, by the unicast cell based on the selected frequency resource and the broadcast multicast cell based on the determined frequency resource, broadcast multicast service data synchronously. The present invention also discloses a transmission system for broadcast multicast services. The present invention can improve the performance of receiving broadcast multicast services by users in a transition zone between the unicast cell and the broadcast multicast cell.
摘要:
In some implementations, a method for wireless data communication includes detecting a short-range proximity of a device. In response to at least the detected short-range proximity, a connection to a mechanical assembly is emulated. A communication link including a wireless link is established with the device by transmitting a request according to a wired standard. Signals formatted in accordance with the wired standard are communicated with the device through the wireless link.
摘要:
Die Erfindung betrifft ein Verfahren zur Vergabe von Teilnehmeradressen (i) an Teilnehmer (1, ...,8) in einem modularen Peripheriesystem (100) der Automatisierungstechnik, wobei das Peripheriesystem (100) eine Steuerbaugruppe (10) und mehrere Teilnehmer (1, ...,8) umfasst, eine Steuerbaugruppe (10) bildet einen Startpunkt (A) für eine Linienstruktur der verkettet verschalteten Teilnehmer (1, ...,8), für ein Erweitern der Linienstruktur zu einer Baumstruktur zwischen zwei Teilnehmern (1,3) wird ein Anschaltelement (31) zwischen zwei Teilnehmern geschaltet.
摘要:
A bus (10) uses DS encoding with an additional wire framing the signal on the Data and Strobe lines, allocating control of the lines by a master (12) or a selected slave (14). A data clock can be recovered from the Data and Strobe lines, eliminating clock skew between circuits. Slaves (14) with differing speed abilities are supported by generating an address portion of the message at a first speed and the remaining transaction portion at the full capabilities of the selected slave. Further, the slaves (14) can adapt their bus drivers to various voltage levels to accommodate master circuits using different processing technologies. The bus (10) is scalable to allow high bandwidths.