HexRAN: A Programmable Approach to Open RAN Base Station System Design
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arXiv
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| Format: | Preprint |
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2023
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| author | Kak, Ahan Pham, Van-Quan Thieu, Huu-Trung Choi, Nakjung |
| author_facet | Kak, Ahan Pham, Van-Quan Thieu, Huu-Trung Choi, Nakjung |
| contents | In recent years, the radio access network (RAN) domain has witnessed a sea change with increasing levels of virtualization and softwarization driven by emerging paradigms such as the Open RAN (O-RAN) movement. However, the fundamental building block of the cellular network, i.e., the base station, remains unchanged and ill-equipped to handle this architectural evolution. In particular, with reference to existing base station architectures, there exists a general lack of programmability and composability along with a protocol stack that grapples with diverging and often conflicting requirements set forth by 3GPP and O-RAN. Recognizing the need for an "O-RAN-native" approach to base station design, this paper introduces HexRAN- a novel base station architecture characterized by key features relating to RAN disaggregation and composability, 3GPP and O-RAN protocol integration and programmability, robust controller interactions, and customizable RAN slicing. Furthermore, the paper also includes a concrete systems-level prototype and comprehensive experimental evaluation of HexRAN on an over-the-air testbed, showcasing the scalability and performance benefits associated with the proposed architecture. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2304_12560 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | HexRAN: A Programmable Approach to Open RAN Base Station System Design Kak, Ahan Pham, Van-Quan Thieu, Huu-Trung Choi, Nakjung Networking and Internet Architecture In recent years, the radio access network (RAN) domain has witnessed a sea change with increasing levels of virtualization and softwarization driven by emerging paradigms such as the Open RAN (O-RAN) movement. However, the fundamental building block of the cellular network, i.e., the base station, remains unchanged and ill-equipped to handle this architectural evolution. In particular, with reference to existing base station architectures, there exists a general lack of programmability and composability along with a protocol stack that grapples with diverging and often conflicting requirements set forth by 3GPP and O-RAN. Recognizing the need for an "O-RAN-native" approach to base station design, this paper introduces HexRAN- a novel base station architecture characterized by key features relating to RAN disaggregation and composability, 3GPP and O-RAN protocol integration and programmability, robust controller interactions, and customizable RAN slicing. Furthermore, the paper also includes a concrete systems-level prototype and comprehensive experimental evaluation of HexRAN on an over-the-air testbed, showcasing the scalability and performance benefits associated with the proposed architecture. |
| title | HexRAN: A Programmable Approach to Open RAN Base Station System Design |
| topic | Networking and Internet Architecture |
| url | https://arxiv.org/abs/2304.12560 |