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The fifth generation (5G) of the wireless communication networks supportswide diversity of service classes, leading to a highly dynamic uplink (UL) anddownlink (DL) traffic asymmetry. Thus, dynamic time division duplexing (TDD)technology has become of a significant importance, due to its radio frameflexibility. However, fully dynamic TDD systems suffer from potentially severeinter-cell cross link interference (CLI). In this paper, we propose a novelinter-cell radio frame coordination (RFC) scheme based on sliding codebook forfully dynamic TDD 5G networks. Proposed coordination scheme simultaneouslyaddresses two optimization objectives of minimizing the average CLI whilereliably maximizing the achievable DL/UL capacity, by virtually extending theRFC degrees of freedom through a sliding phase-offset RFC codebook design.Compared to the state-of-the-art TDD studies, the proposed scheme showssignificantly improved ergodic capacity, i.e., at least 40% gain under both theTCP and UDP protocols, and with much less signaling overhead, limited to B-bit.The paper offers valuable insights about how to most efficiently pre-mitigatepotential CLI in Macro TDD systems.

Inter-Cell Radio Frame Coordination Scheme Based on Sliding Codebook for 5G TDD Systems