Mitigation of interference between wireless networks

A network hub for communication with at least one network node based on transmitting beacon signal, the network hub used in a system with multiple adjacent network hubs, the network hub comprising:

• the beacon signal corresponding to a beacon frame to be transmitted by the network hub during a beacon period, the beacon period beginning at a beacon period reoccurring time;
• the beacon frame identifying a beacon shifting sequence index and a beacon shifting sequence phase;
• the beacon shifting sequence index:
• identifying a specific beacon shifting sequence corresponding to a repeating PN (pseudo-random) beacon shifting sequence pattern as a series of beacon shifting sequence phases, each beacon shifting sequence phase:
• indicating a position within the beacon shifting sequence pattern, and
• corresponding to a transmission time offset within the beacon period;
• circuitry to select a current beacon shifting sequence designated by a current beacon shifting sequence index;
• and
• transmission circuitry to transmit the beacon frame in a specific beacon period according to the current beacon shifting sequence based on:
• a current beacon shifting sequence phase for the beacon frame,
• a current beacon transmission time offset corresponding to the current beacon shifting sequence and the current beacon shifting sequence phase, and
• the transmission circuitry to transmit the beacon frame at a beacon frame transmission time delayed after the beacon period recurring time by the current beacon transmission time offset;
• transmitting the beacon frame with a beacon shifting sequence phase that is offset from a beacon shifting phase transmitted by at least one other network hub.

A network node for communicating with a network hub based on receiving a beacon signal, in a system with multiple adjacent network hubs, the network node comprising:

• the beacon signal corresponding to a beacon frame received by the network node during a beacon period, the beacon period beginning at a beacon period reoccurring time;
• the beacon frame identifying a beacon shifting sequence index and a beacon shifting sequence phase;
• the beacon shifting sequence index:
• identifying a specific beacon shifting sequence corresponding to a repeating PN pseudo-random beacon shifting sequence pattern as a series of beacon shifting sequence phases, each beacon shifting sequence phase
• indicating a position within the beacon shifting sequence pattern, and
• corresponding to a transmission time offset within the beacon period;
• receive circuitry to receive the beacon frame in a specific beacon period according to a current beacon shifting sequence designated by a current beacon shifting sequence index based on:
• a current beacon shifting sequence phase for the beacon frame,
• a current beacon transmission time offset corresponding to the current beacon shifting sequence and the current beacon shifting sequence phase, and
• the receive circuitry to receive the beacon frame at a beacon frame transmission time delayed after the beacon period recurring time by the current beacon transmission time offset,
• the beacon frame received from the associated network hub having a beacon shifting sequence phase that is offset from a beacon shifting phase transmitted by at least one other network hub.