GBN-ARQ协议1. By illustrating UML specification of GBN-ARQ protocol, this paper intends to present some methods to specify protocols with UML. 本文结合对GBN-ARQ协议的UML描叙,给出了用UML描叙协议的一些方法。2) ARQ protocol ARQ协议 1. It is based on the ARQ protocol model of data link ...