Literature Database Entry


Joana Angjo, Anatolij Zubow and Falko Dressler, "Coexistence Challenges in IRS-assisted Multi-Operator Networks," Proceedings of IEEE Global Telecommunications Conference (GLOBECOM 2023), 4th Workshop on Emerging Topics in 6G Communications (6GComm), Kuala Lumpur, Malaysia, December 2023.


The deployment of intelligent reconfigurable surfaces (IRS) by a wireless operator is a widely discusses concept for optimizing the communication performance. Now, the IRS manipulates the channel propagation characteristics not only of signals of this operator, but also of other spatially co-located operators, although they use different frequencies. This is because IRS usually do not employ bandpass filtering and, thus, also reflect signals of other frequencies. Those unwanted reflections might cause interference due to unwanted multipath. We argue that IRS are part of the common environment and should be jointly controlled in order to achieve multi-operator coexistence. In this paper, we propose splitting a single common IRS into multiple sub-blocks (subIRS) and controlling their dynamic assignment to operators, depending on the needs of the spatially co-located operators. We show that the performance of the overall multi-operator network can be improved significantly if subIRS are properly assigned to the operators, compared to a purely static or random assignments. Our simulations results reveal that significant improvement in terms of the sum rate and the fairness with respect to the respective data rate of the operators can be achieved. Specifically, results reveal an improvement of the Jain's fairness index (JFI) metric up to a factor of 4.5 as compared to the worst-case assignment. Additionally, the impact of the number of random assignments, operators, IRS elements, and spectrum are investigated.

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Joana Angjo
Anatolij Zubow
Falko Dressler

BibTeX reference

    author = {Angjo, Joana and Zubow, Anatolij and Dressler, Falko},
    title = {{Coexistence Challenges in IRS-assisted Multi-Operator Networks}},
    publisher = {IEEE},
    address = {Kuala Lumpur, Malaysia},
    booktitle = {IEEE Global Telecommunications Conference (GLOBECOM 2023), 4th Workshop on Emerging Topics in 6G Communications (6GComm)},
    month = {12},
    year = {2023},

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