WP4 PHY/MAC Algorithms

D4.1 Specification of PHY/MAC Adaptations for the Target Architectures

The objective of this deliverable is to present possible adaptations to the Physical (PHY) and Medium Access Control (MAC) layers of the network architectures for topologies A and B in order to lower the latency of the systems and to provide high level specifications for the proposed adaptations.

D4.2 Enhancements to Framing and Low-Layer Signalling

This deliverable describes the design of adaptations to framing and low-layer signalling on topology A and topology B, in order to enable the implementation of the techniques required for achieving the latency reductions for the applications targeted in LOLA (see D2.1 “Target application scenarios” [1]). Topology A refers to Long Term Evolution (LTE) and LTE-Advanced (LTE-A) network architectures while Topology B refers to rapidly deployable mesh networks. Contrary to other WP4 deliverables providing adaptations, D4.2 is submitted in a single delivery and therefore there are no expected releases on M24 and M36.

D4.3 Adaptive Modulation and Coding Scheme and Hybrid ARQ Mechanism

The main ideas to lower latency on the two network topologies considered in LOLA have been compiled and specified in D4.1 Specification of Physical layer (PHY) and Medium Access Control (MAC) adaptations. The document presented the technical basis behind each idea and provided initial latency gain estimations. Ideas were prioritized in the conclusions section based on several criteria: latency gain, complexity, drawbacks, etc. D4.3 is a step forward with respect to D4.1 and describes in detail those adaptations to current Adaptive Modulation and Coding (AMC) and Hybrid Automatic Repeat Request (HARQ) mechanisms that have been considered most interesting for LOLA topologies A and B. In addition, D4.3 provides descriptions of the simulation methodologies used to analyze the performance achieved by these adaptations. Finally, this deliverable also includes simulation results to give evidence of the latency reductions that can be expected with the studied adaptations.

D4.4 Adaptive Modulation and Coding Scheme for Hybrid Analog/Digital Transmission

This deliverable provides a survey of hybrid digital/analog transmission schemes. Novel results for the case of Rayleigh fading parallel channels are described. Adaptations on topology A and topology B, to achieve latency reductions for the applications targeted in LOLA (see D2.1 Target application scenarios) are suggested. Because of the length of the task, two preliminary versions will be generated at M12 and M24, this version corresponding to the release at M24. The final release will be generated at M36.

D4.5 Scheduling Policies for M2M and Gaming Traffic

The main ideas to lower latency on the two network topologies considered in LOLA have been compiled and specified in D4.1 Specification of Physical layer (PHY) and Medium Access Control (MAC) adaptations. The document presented the technical basis behind each idea and provided initial latency gain estimations. Ideas were prioritized in the conclusions section based on several criteria: latency gain, complexity, drawbacks, etc. D4.5 is a step forward with respect to D4.1 and describes in detail those adaptations to current traffic scheduling policies that have been considered most interesting for LOLA topologies A and B. In addition, D4.5 provides descriptions of the simulation methodologies used to analyze the performance achieved by these adaptations. Finally, this deliverable also includes simulation results to give evidence of the latency reductions that can be expected with the studied adaptations.

WP4 Presentation M1-M24

This presentation gives an overview of WP4 tasks and the achievements completed from M1 up to M24