Beamforming Vector Calculation for Wireless Backhaul Latency Reduction

The patent applies local quality by transforming the uniform beam pattern into a directional beam pattern that concentrates transmission energy locally toward the intended receiver. The beamforming vector calculates specific transmission weights for each antenna element to focus energy in the direction of the target node, rather than radiating uniformly in all directions. This localized energy concentration improves resource efficiency while reducing interference to neighboring nodes.

The patent employs asymmetry by replacing the symmetric uniform beam pattern with an asymmetric directional beam pattern. The beamforming process creates an asymmetric radiation pattern where energy is concentrated toward the intended receiver in specific directions, while other directions experience reduced or no transmission energy. This asymmetric distribution resolves the contradiction by maintaining coverage toward the target while minimizing interference elsewhere.

The patent applies local quality to the backoff mechanism by making it directional rather than uniform. The transmitting node performs clear channel assessment (CCA) specifically in the direction of the intended receiver using the beamforming vector. Backoff is applied only when interference or occupancy is detected in that specific direction, while transmission can proceed in other directions where the channel is clear. This directional backoff maintains collision avoidance reliability while significantly improving transmission resource efficiency.

The patent segments the backoff operation into direction-specific components. Instead of a single uniform backoff applied to all directions, the system divides the backoff decision into multiple directional assessments, each handled independently based on local channel conditions. The beamforming vector enables separate CCA and backoff control for each spatial direction, allowing selective transmission in clear directions while backing off only in occupied directions.