cicyt UNIZAR
Full-text links:

Download:

Current browse context:

cs.IT

Change to browse by:

References & Citations

DBLP - CS Bibliography

Bookmark

(what is this?)
CiteULike logo BibSonomy logo Mendeley logo del.icio.us logo Digg logo Reddit logo ScienceWISE logo

Computer Science > Information Theory

Title: Optimizing Information Freshness in Wireless Networks under General Interference Constraints

Abstract: Age of information (AoI) is a recently proposed metric for measuring information freshness. AoI measures the time that elapsed since the last received update was generated. We consider the problem of minimizing average and peak AoI in wireless networks under general interference constraints. When fresh information is always available for transmission, we show that a stationary scheduling policy is peak age optimal. We also prove that this policy achieves average age that is within a factor of two of the optimal average age. In the case where fresh information is not always available, and packet/information generation rate has to be controlled along with scheduling links for transmission, we prove an important separation principle: the optimal scheduling policy can be designed assuming fresh information, and independently, the packet generation rate control can be done by ignoring interference. Peak and average AoI for discrete time G/Ber/1 queue is analyzed for the first time, which may be of independent interest.
Subjects: Information Theory (cs.IT); Networking and Internet Architecture (cs.NI)
Cite as: arXiv:1803.06467 [cs.IT]
  (or arXiv:1803.06467v1 [cs.IT] for this version)

Submission history

From: Rajat Talak [view email]
[v1] Sat, 17 Mar 2018 05:45:24 GMT (364kb,D)