Makale detayı · 2016
Minimizing the Age of Information in broadcast wireless networks
- Yıl
- 2016
- Tür
- conference-paper
Özet
OpenAlex · İngilizce
We consider a wireless broadcast network with a base station sending time-sensitive information to a number of clients. The Age of Information (AoI), namely the amount of time that elapsed since the most recently delivered packet was generated, captures the freshness of the information. We formulate a discrete-time decision problem to find a scheduling policy that minimizes the expected weighted sum AoI of the clients in the network. To the best of our knowledge, this is the first work to provide a scheduling policy that optimizes AoI in a wireless network with unreliable channels. The results are twofold: first, we show that a Greedy Policy, which transmits the packet with highest current age, is optimal for the case of symmetric networks. Then, for the general network case, we establish that the problem is indexable and obtain the Whittle Index in closed-form. Numerical results are presented to demonstrate the performance of the policies.
Konular
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Yerel katalogda bu makaleye atıf yapan 20 yayın (OpenAlex referans eşleşmesi; tam dünya listesi değildir).
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- Age-optimal updates of multiple information flows 2018
- Average Age of Information with Hybrid ARQ under a Resource Constraint 2018
- Improving Age of Information in Random Access Channels 2020
- Scheduling Policies for Minimizing Age of Information in Broadcast Wireless Networks 2018
- Remote Estimation of the Wiener Process over a Channel with Random Delay 2017