Average Age of Information with Hybrid ARQ under a Resource Constraint

Download
2018-01-01
Ceran Arslan, Elif Tuğçe
Gunduz, Deniz
Gyorgy, Andras
Scheduling the transmission of status updates over an error-prone communication channel is studied in order to minimize the long-term average age of information (AoI) at the destination under a constraint on the average number of transmissions at the source node. After each transmission, the source receives an instantaneous ACK/NACK feedback, and decides on the next update without prior knowledge on the success of future transmissions. First, the optimal scheduling policy is studied under different feedback mechanisms when the channel statistics are known; in particular, the standard automatic repeat request (ARQ) and hybrid ARQ (HARQ) protocols are considered. Then, for an unknown environment, an average-cost reinforcement learning (RL) algorithm is proposed that learns the system parameters and the transmission policy in real time. The effectiveness of the proposed methods are verified through numerical simulations.
IEEE Wireless Communications and Networking Conference (WCNC)

Suggestions

Average Age of Information With Hybrid ARQ Under a Resource Constraint
Ceran Arslan, Elif Tuğçe; Gunduz, Deniz; Gyorgy, Andras (2019-03-01)
Scheduling the transmission of status updates over an error-prone communication channel is studied in order to minimize the long-term average age of information at the destination under a constraint on the average number of transmissions at the source node. After each transmission, the source receives an instantaneous ACK/NACK feedback, and decides on the next update without prior knowledge on the success of future transmissions. The optimal scheduling policy is first studied under different feedback mechan...
A Reinforcement Learning Approach to Age of Information in Multi-User Networks
Ceran Arslan, Elif Tuğçe; Gunduz, Deniz; Gyorgy, Andras (2018-01-01)
Scheduling the transmission of time-sensitive data to multiple users over error-prone communication channels is studied with the goal of minimizing the long-term average age of information (AoI) at the users under a constraint on the average number of transmissions. The source can transmit only to a single user at each time slot, and after each transmission, it receives an instantaneous ACK/NACK feedback from the intended receiver, and decides on when and to which user to transmit the next update. The optim...
Differential network coding in wireless networks Telsiz aǧlarda farksal aǧ kodlamasi
Özdemir, Özgür; Yılmaz, Ali Özgür (2009-10-29)
In this paper a three-terminal communication scenario where two users exchange information by employing differential binary modulation and network coding via a relay is considered. The transmission is divided into three slots in time where the first and second slots are allocated to the transmission of differential encoded data of the users. After demodulation, the relay broadcasts the bit-wise XOR-ed and differential encoded packet to the users in the third slot. The optimum detector and a simplified decis...
Total outage capacity of randomly-spread coded-CDMA with linear multiuser receivers over multipath fading channels
Ertug, O; Sayrac, B; Baykal, Buyurman; Yucel, MD (2003-07-03)
We address in this paper the derivation and analysis of the outage spectral efficiencies achievable with linear multiuser receivers over randomly-spread multipath fading time-varying coded-CDMA channels. The basis of the derivations is the use of non-asymptotic average eigenvalue densities of random cross-correlation matrices. The analysis give important clues on the achievable capacity with linear multiuser receivers under non-ergodic transmission situations.
Optimizing age of information on real-life TCP/IP connections through reinforcement learning
Sert, Egemen; Sonmez, Canberk; Baghaee, Sajjad; Uysal, Elif (2018-07-05)
Age of Information (AoI) has emerged as a performance metric capturing the freshness of data for status-update based applications ( e.g. , remote monitoring) as a more suitable alternative to classical network performance indicators such as throughput or delay. Optimizing AoI often requires distinctly novel and sometimes counter-intuitive networking policies that adapt the rate of update transmissions to the randomness in network resources. However, almost all previous work on AoI to data has been theoretic...
Citation Formats
E. T. Ceran Arslan, D. Gunduz, and A. Gyorgy, “Average Age of Information with Hybrid ARQ under a Resource Constraint,” presented at the IEEE Wireless Communications and Networking Conference (WCNC), Barcelona, İspanya, 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/92298.