This paper studies the “age of information” in a general multi-source multi-hop wireless
network with explicit channel contention. Specifically, the scenario considered in this paper …

Age of Information (AoI) is studied in two-user broad-cast networks with feedback, and lower
and upper bounds are derived on the expected weighted sum AoI of the users. In particular …

This letter investigates both information freshness and energy harvesting (EH) in downlink
information update systems. Information freshness is characterized by age of information …

In this paper we consider a wireless IoT network with energy harvesting sensors and finite
battery capacity which obtain their energy from a wireless power transmitter and …

Age of information (AoI) and energy efficiency (EE) are two critical metrics for real-time status
update systems. However, these two metrics may not be optimized simultaneously. This …

We consider a wireless communication network with an adaptive scheme to select the
number of packets to be admitted and encoded for each transmission, and characterize the …

We consider the timeliness in delivering an update consisting of multiple message packets
to multiple users via multicast transmissions with or without employing network coding …

This paper investigates the tradeoff between data freshness and transmission efficiency for
packet delivery over erasure channels with delayed feedback. First, we show that the …

The interplay between timeliness and rate efficiency is investigated in packet erasure
broadcast channels with feedback. A scheduling framework is proposed in which coding …

This paper studies information freshness in a broadcast scenario where an energy
harvesting sensor generates large update message comprising K packets and transmits …