D2D Subframe Alignment Using Timing Advance to Reduce Interference

The patent merges D2D communication resource allocation with eNB communication timing by aligning subframe boundaries. The D2D subframe boundaries are determined based on uplink timing advance (TA) values, causing D2D communication to occur in coordination with eNB uplink transmissions. This merging reduces interference between D2D and eNB-UE links while improving overall resource utilization efficiency.

The patent applies local quality by differentiating D2D subframe boundary alignment based on individual UE timing advance (TA) values. Each UE's D2D subframe boundaries are locally adjusted according to its specific TA value received from the eNB, rather than using a uniform alignment for all UEs. This localized approach maintains simplicity while accounting for timing variations to reduce interference.

The patent implements self-service by having the eNB provide timing advance (TA) values to UEs, which then autonomously determine their own D2D subframe boundaries based on these TA values. The UE independently calculates and applies the timing adjustment without requiring complex centralized coordination or additional signaling for each D2D connection. This self-service approach reduces interference while keeping device complexity manageable.