Optimization of AoII and QAoII in Multi-User Links

Creative Commons License

Ayik M., CERAN ARSLAN E. T., Uysal E.

2023 IEEE INFOCOM Conference on Computer Communications Workshops, INFOCOM WKSHPS 2023, New Jersey, Amerika Birleşik Devletleri, 20 Mayıs 2023 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/infocomwkshps57453.2023.10225938
  • Basıldığı Şehir: New Jersey
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Anahtar Kelimeler: Age of Incorrect Information, Age of Information, Age of Information at Query, Restless Multi-Armed Bandits, Scheduling, Whittle Index Policies
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

We consider a network with multiple sources and a base station that send time-sensitive information to remote clients. The Age of Incorrect Information (AoII) captures the freshness of the informative pieces of status update packets at the destinations. We derive the closed-form Whittle Index formulation for a push-based multi-user network over unreliable channels with AoII-dependent cost functions. We also propose a new semantic performance metric for pull-based systems, named the Age of Incorrect Information at Query (QAoII), that quantifies AoII at particular instants when clients generate queries. Simulation results demonstrate that the proposed Whittle Index-based scheduling policies for both AoII and QAoII-dependent cost functions are superior to benchmark policies, and adopting query-aware scheduling can significantly improve the timeliness for scenarios where a single user or multiple users are scheduled at a time.