Abstract: Adaptive message caches are disclosed for packet replay and/or flood protection in mesh network devices. The adaptive message cache includes a replay protection area (RPA) and a flood protection area (FPA). For each received packet, a packet security processor compares packet metadata to metadata entries stored for prior packets within the RPA to provide a replay protection check. If a replay protection check is not passed, the packet is dropped. If passed, the packet security processor compares the packet metadata to metadata entries stored for prior packets within the FPA to provide a flood protection check. If the flood protection check is not passed, the packet is dropped. If passed, the received packet is authenticated for the mesh network. Entries within the RPA/FPA are then updated using the packet metadata. Further, the sizes of the RPA and FPA can be adaptively adjusted based upon the packet metadata.

Abstract: A wireless communication device includes a physical (PHY) layer module, a media access control (MAC) layer module (102) coupled to the PHY layer module. The MAC layer module is configured to generate a limited acknowledgement (LACK) response that indicates successful receipt of a data transmission, and to reduce a data rate used to transmit data to the wireless communication device.

Abstract: A networking device for connection to a plurality of personal area networks is described which operates according to a layer model having a PHY layer, at least a first MAC layer and a second MAC layer, and a third layer situated functionally between the PHY layer and the at least first and second MAC layers. The first and second MAC layers are arranged to support first and second protocol stacks, respectively, to access first and second respective PANs using frequency hopping spread spectrum techniques and first and second sets of parameters respectively. The first and second MAC layers are arranged to provide the first and second sets of parameters, respectively, to the third layer, which is arranged to allocate access to the PHY layer to both the first and second MAC layers in accordance with their respective sets of parameters.

Abstract: Adaptive message caches are disclosed for packet replay and/or flood protection in mesh network devices. The adaptive message cache includes a replay protection area (RPA) and a flood protection area (FPA). For each received packet, a packet security processor compares packet metadata to metadata entries stored for prior packets within the RPA to provide a replay protection check. If a replay protection check is not passed, the packet is dropped. If passed, the packet security processor compares the packet metadata to metadata entries stored for prior packets within the FPA to provide a flood protection check. If the flood protection check is not passed, the packet is dropped. If passed, the received packet is authenticated for the mesh network. Entries within the RPA/FPA are then updated using the packet metadata. Further, the sizes of the RPA and FPA can be adaptively adjusted based upon the packet metadata.

Abstract: A wireless communication device includes a physical (PHY) layer module, a media access control (MAC) layer module (102) coupled to the PHY layer module. The MAC layer module is configured to generate a limited acknowledgement (LACK) response that indicates successful receipt of a data transmission, and to reduce a data rate used to transmit data to the wireless communication device.

Abstract: A networking device for connection to a plurality of personal area networks is described which operates according to a layer model having a PHY layer, at least a first MAC layer and a second MAC layer, and a third layer situated functionally between the PHY layer and the at least first and second MAC layers. The first and second MAC layers are arranged to support first and second protocol stacks, respectively, to access first and second respective PANs using frequency hopping spread spectrum techniques and first and second sets of parameters respectively. The first and second MAC layers are arranged to provide the first and second sets of parameters, respectively, to the third layer, which is arranged to allocate access to the PHY layer to both the first and second MAC layers in accordance with their respective sets of parameters.