Media access control circuit and packet management method
AssigneeSigmastar Technology Ltd.
InventorsQin-Wei She, Yan-Xiong Wu, Shi-Xiang Zheng
Life of this patent
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Abstract
A media access control (MAC) circuit is coupled to a physical layer circuit and includes a storage circuit, a receiving circuit, a checking circuit, and a protection circuit. The storage circuit is configured to store a first value and a second value. The receiving circuit is configured to receive a packet from the physical layer circuit. The checking circuit is configured to check the packet. The protection circuit is configured to perform the following steps: updating the first value according to a clock; and discarding the packet when the absolute difference between the first value and a reference value is smaller than the second value.
Claims20
A media access control (MAC) circuit coupled to a physical layer circuit, comprising:
- a storage circuit configured to store a first value and a second value;
- a receiving circuit configured to receive a packet from the physical layer circuit;
- a checking circuit configured to check the packet;
- and
- a protection circuit configured to perform following steps:
- updating the first value according to a clock;
- and
- discarding the packet when an absolute difference between the first value and a reference value is smaller than the second value.
A packet management method applied to a media access control (MAC) circuit, wherein the MAC circuit is coupled to a physical layer circuit and comprises a storage circuit that stores a first value, a second value, and a reference value, the method comprising:
- updating the first value according to a clock;
- receiving a packet from the physical layer circuit;
- checking the packet;
- and
- discarding the packet when an absolute difference between the first value and the reference value is smaller than the second value.
Dependencies are inferred from the claim text.