Patent ID: 9209926
Filing Date: 2015-12-08
Classification: H04J

Abstract:
1. A communication system comprising: a frame transmitting apparatus including a transmitting unit which transmits, when a change is made to a value in a predetermined field of a frame, the frame including the predetermined field with the changed value a predetermined number of times in succession; and a frame receiving apparatus including a receiving unit which receives the frame and an acceptance processing unit which recognizes the value in the predetermined field of the received frame and conducts acceptance processing, wherein the acceptance processing unit compares, when the value in the predetermined field of the received frame is different from a currently accepted value, the value in the predetermined field of the received frame with an expected value, accepts the value in the predetermined field of the received frame when the value in the predetermined field of the received frame matches the expected value, and accepts, when the value in the predetermined field of the received frame does not match the expected value, the value in the predetermined field of the received frame after receiving the same value in the predetermined field the predetermined number of times in succession.