FIELD: communications.
SUBSTANCE: invention relates to communication engineering and can be used in wireless communication systems. For this purpose, in a network communication apparatus, transfer and discard processing is realised for each transfer frame having a priority, and a band limitation is carried out to prevent congestion of a transfer destination apparatus. Specifically, a bucket is provided for every priority, and tokens of an amount determined based on priority are supplemented. Moreover, before a bucket evaluation, one shared bucket is provided. All tokens existing in bucket provided for every priority are transferred to shared bucket for every constant period. Tokens overflowing beyond a capacity of shared bucket are discarded. All of frames are equally evaluated and transferred regardless of priority of each of frames, as far as token exists in shared bucket. When there is no token in shared bucket, switching to preferential band limitation is carried out and each priority bucket is evaluated. Bucket corresponding to priority of frame is checked and when token exists, transfer processing of frame is carried out. When there is no token, discard processing of frame is carried out.
EFFECT: technical result is preventing congestion of device during transmission in communication networks.
9 cl, 11 dwg
