Deployment of a large number of small cells is necessary to complement basic macro-cell coverage and to provide sufficient area spectral efficiency in future heterogeneous networks. In small cell scenarios, the amount of instantaneous uplink and downlink traffic may vary significantly with time and among the adjacent cells. In such cases, Dynamic TDD provides vastly improved overall resource utilization by dynamically changing the amount of resources allocated to each direction at each time instant. Moreover, the future heterogeneous network must support in a controllable manner various types of direct communications, e.g., network controlled device-to-device (D2D) and machine-to-machine (M2M) communications. At the same time, some of the nodes may be equipped with a large (massive) antenna array that can simultaneously serve multiple users and suppress a large number of undesired interference sources. In such a complex operating environment, advanced interference and mobility management across different transmission/reception points with overlapping coverage becomes of utmost importance. Interference coordination is especially vital for cell-edge users, who in the end dictate the dimensioning of the wireless networks. The target of the this session is to provide a holistic view of future (5G and beyond) heterogeneous wireless networks based on dynamic traffic aware TDD systems, especially from the perspective of massive MIMO deployment, channel state acquisition, pilot assignment, traffic aware resource allocation and coordinated interference management.
- Michael Honig (Northwestern University, US), “Traffic-Driven Resource Allocation over Slow Time-scales”
- Antti Tölli (OULU, Finland), “UL/DL Mode Selection and Transceiver Design for Dynamic TDD”
- Emil Björnson (Linköping University, Sweden), “User Association in Massive MIMO with Heterogeneous Load”
- Elisabeth de Carvalho (Aalborg University, Denmark), “Random Access Protocols for Massive MIMO”
- Dirk Slock (EURECOM, France), “Deterministic Limits in Massive MIMO Networks”