Dragonwave Inc.

Brian Arthur Kay

Prakasha Aithal

Patrick Raymond Maheral

Adaptive modulation and priority-based flow control in wireless communications are disclosed. Ingress communication traffic is modulated for transmission over a wireless communication link. A modulation rate of modulation to be applied to the ingress communication traffic is controlled by adaptive modulation. A rate at which the ingress communication traffic is received is controlled through Priority-based Flow Control (PFC), but the PFC is based on the adaptive modulation. Adaptive modulation and PFC are thus linked together. PFC messaging could be sent when a change in modulation rate due to the adaptive modulation would not meet the rate at which the ingress communication traffic is received. If a change in modulation rate due to the adaptive modulation would still meet the rate at which the ingress communication traffic is received, then PFC messaging might not be sent.

Adaptive modulation and priority-based flow control in wireless communications

Bridging for Synchronous Optical NETwork (SONET)/Synchronous Digital Hierarchy (SDH) Automatic Protection Switching is disclosed. First and second apparatus in a redundant pair handle communication traffic that includes content for transmission on respective first and second SONET/SDH connections. Content received by each apparatus for transmission on a SONET/SDH connection is transmitted on the first and second SONET/SDH connections. Such content is also transmitted by each apparatus to the other apparatus in the redundant pair unless that content was received from the other apparatus. The content is thereby transmitted on both the first and second SONET/SDH connections even though the content is received directly by only one apparatus of the redundant pair. This avoids duplication of communication traffic that carries the content. Where the traffic is Ethernet traffic, the traffic may be bridged between the first apparatus and the second apparatus at the Media Access Control (MAC) layer.

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Ottawa, Canada

Brian Arthur Kay