Effective Capacity Maximization for Multi-Numerology based 5G NR Networks

Su, Chia-Yu; Fang, Chun-Hao; Shen, Li-Hsiang; Feng, Kai-Ten

doi:10.1109/vtc2020-fall49728.2020.9348797

Cited by 6 publications

(6 citation statements)

References 11 publications

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“…which implies that q arrived packets are being processed while the arriving one is awaiting. In (18), notation ρ x denotes the work load of server x, which is given by…”

Section: B Delay Analysismentioning

confidence: 99%

“…Most of existing literatures consider a single performance metric of either throughput for eMBB or latency for URLLC users, which are impractical and inapplicable in a real multi-service system. Additionally, FFS-enabled CoMP-URLLC transmission has not been discussed in open literatures, where joint throughput and end-to-end (E2E) delay should be optimized, which is also not considered in our previous works of [17], [18]. Moreover, multi-DU and multiuser services over variant channels potentially deteriorates the system performance, which should be considered in FFS design.…”

Section: Introductionmentioning

confidence: 98%

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Flexible Functional Split for Processing Sharing and CoMP-Enhanced Mixed eMBB/URLLC Services in Beyond 5G Wireless Networks

Shen¹,

Huang²,

Feng³

2021

Preprint

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With explosively escalating service demands, beyond fifth generation (B5G) aims to realize various requirements for multi-service networks, i.e., mixed enhanced mobile broadband (eMBB) and ultra-reliable low-latency communication (URLLC) services. To flexibly serve diverse traffic, various functional split options (FSOs) are specified by B5G protocols enabling different network functions. In order to improve signal qualities for edge users, we consider FSO-based coordinated multi-point (CoMP) transmission as a prominent technique capable of supporting high traffic demands. However, due to conventional confined hardware processing capability, a processing sharing (PS) model is introduced to deal with high latency for multi-service FSO-based networks. Therefore, it becomes essential to assign CoMP-enhanced functional split modes under PS model. A more tractable FSO-based network in terms of ergodic rate and reliability is derived by stochastic geometry approach. Moreover, we have proposed CoMP-enhanced functional split mode allocation (CFSMA) scheme to adaptively assign FSOs to provide enhanced mixed URLLC-eMBB services. The simulation results have validated analytical derivation and demonstrated that the proposed CFSMA scheme optimizes system spectrum efficiency while guaranteeing stringent latency requirement.

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“…which implies that q arrived packets are being processed while the arriving one is awaiting. In (18), notation ρ x denotes the work load of server x, which is given by…”

Section: B Delay Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Flexible Functional Split for Processing Sharing and CoMP-Enhanced Mixed eMBB/URLLC Services in Beyond 5G Wireless Networks

Shen¹,

Huang²,

Feng³

2021

Preprint

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“…Moreover, most of existing works target on the rate optimization, which however may waste power resource to satisfy the demands. We also extend from our previous works in [11], [12], [24], which are focused on SN-based resource allocation for single and multi-services as well as for the fixed MN scenario, respectively. To achieve higher EE, conceiving a flexible MN mechanism becomes compellingly imperative under comprehensive resource utilizations and interference considerations for supporting different service requirements.…”

Section: Introductionmentioning

confidence: 97%

“…Nonetheless, it has potentially lower flexibility compared to the system using frequency-domain based numerology in [16]- [18]. Therefore, papers [22]- [24] have studied the architecture of multi-numerology with consideration of INI. The authors of [22] have designed a heuristic method to minimize INI by adjusting the power difference of RBs.…”

Section: Introductionmentioning

confidence: 99%

“…The authors of [22] have designed a heuristic method to minimize INI by adjusting the power difference of RBs. While, the works of [23], [24] assign appropriate power to maximize INI-aware throughput. Furthermore, it is noticed that current INI-related works consider fixed numerology bandwidth ratio (NBR) among different numerologies, i.e., the number of RBs utilized by a specific numerology is predefined [19].…”

Section: Introductionmentioning

confidence: 99%

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Energy Efficient Resource Allocation for Multinumerology Enabled Hybrid Services in B5G Wireless Mobile Networks

Shen

Feng

2023

IEEE Trans. Wireless Commun.

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Multi-numerology (MN) providing a flexible transmission frame structure has attracted a considerable attention for supporting abundant services for beyond fifth-generation (B5G) networks. However, mobility induces severe performance degradation under different numerologies including temporal and spectral fluctuation, which is not well-investigated in existing literature. We have conceived an MN-enabled energy efficiency (EE) problem aiming for alleviating mobility-and MN-induced interferences through moderate power and sub-carrier assignment, while considering quality-of-service (QoS) and latency requirements for different services. We propose a multi-numerology based power and resource block allocation (MNPRA) scheme considering time-/frequency-division (TD/MD) based MN leveraging temporal and spectral features among numerologies. The original non-solvable problem is theoretically transformed into a convex one by employing Dinkelbach process, Taylor approximation and difference of two concave functions (D.C.). Convergence of proposed MNPRA scheme is analyzed and verified by simulations. In simulation results, we have evaluated MNPRA under different service demands, user velocities and MN types. Our proposed scheme outperforms the conventional single-numerology framing and existing methods in open literature, which results in performances of higher EE as well as of lower throughput/delay outage probability.

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CoMP-Enhanced Flexible Functional Split for Mixed Services in Beyond 5G Wireless Networks

Shen

Huang

Feng

2023

IEEE Trans. Commun.

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Effective Capacity Maximization for Multi-Numerology based 5G NR Networks

Cited by 6 publications

References 11 publications

Flexible Functional Split for Processing Sharing and CoMP-Enhanced Mixed eMBB/URLLC Services in Beyond 5G Wireless Networks

Flexible Functional Split for Processing Sharing and CoMP-Enhanced Mixed eMBB/URLLC Services in Beyond 5G Wireless Networks

Energy Efficient Resource Allocation for Multinumerology Enabled Hybrid Services in B5G Wireless Mobile Networks

CoMP-Enhanced Flexible Functional Split for Mixed Services in Beyond 5G Wireless Networks

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