Fronthaul-constrained cloud radio access networks: insights and challenges
By Mugen Peng, Chonggang Wang, Vincent Kin Nang Lau, H. Vincent Poor, Hong Kong, Vincent. IEEE wireless communications, 2015
420 citations recorded by the source corpus.
As a promising paradigm for fifth generation wireless communication systems, cloud radio access networks (C-RANs) have been shown to reduce both capital and operating expenditures, as well as to provide high spectral efficiency (SE) and energy efficiency (EE). The fronthaul in such networks, defined as the transmission link between the baseband unit and the remote radio head, requires a high capacity, but is often constrained. This article comprehensively surveys recent advances in fronthaul-constrained CRANs, including system architectures and key techniques. Particularly, major issues relating to the impact of the constrained fronthaul on SE/EE and quality of service for users, including compression and quantization, large-scale coordinated processing and clustering, and resource allocation optimization, are discussed together with corresponding potential solutions. Open issues in terms of software-defined networking, network function virtualization, and partial centralization are also identified.
Subfields: Electrical and Electronic Engineering, Media Technology
View Paper: https://www.semanticscholar.org/paper/25a4851713b5d2c0023cfd113322e839d34f283a
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Electrical and Electronic Engineering
In Media Technology
Citations in the corpus
- A Survey of the Functional Splits Proposed for 5G Mobile Crosshaul Networks (2019, neutral): “[4], [5], [12], [19], [24], [25], [26], [27], [28], [29], [30], [31], [32], [33], [34], [35], [36], [37], [38], [39], [40], [41], [42], [43], [44], [45], [46], [47], [48], [49], [50], [51], [52]”
- Recent Advances in Cloud Radio Access Networks: System Architectures, Key Techniques, and Open Issues (2016, background): “of the corresponding key techniques is the fronthaul compression [16].”
- Integrated Sensing and Communications: Recent Advances and Ten Open Challenges (2023, background): “For communication-only systems, the intercell interference of remote radio heads (RRHs) can be mitigated by specifically designed interference management strategies, such as soft fractional frequency reuse or coordinated multipoint techniques [108].”
- The New Frontier in RAN Heterogeneity: Multi-Tier Drone-Cells (2016, background): “ is twofold: First, it alleviates the weight and processing power required for an on-board BBU. Second, if combined with C-RAN, it can allow cooperation. CRAN is useful particularly for dense HetNets [9], or when a fleet of drone-BSs are deployed. Scenarios 3 , 4 , 7 , and 8 in Fig. 1 exemplify poten”
- Software Defined Networking Architecture, Security and Energy Efficiency: A Survey (2017, background): “Cloud Radio Access Networks (HC-RAN) are capable of supporting the decoupling without degrading the overall network performance [84], [85].”
- Integrated Sensing and Communications: Toward Dual-Functional Wireless Networks for 6G and Beyond (2021, methodology): “Fortunately, the C-RAN architecture designed for 5G-andbeyond communications provides a flexible and reconfigurable framework that enables a variety of the sensing modes discussed above [170], [171].”
- Application of Machine Learning in Wireless Networks: Key Techniques and Open Issues (2018, background): “siderable increase in data rates, coverage and the number of connected devices with latency and energy consumption significantly reduced [2], [3], [4], [5].”