Fronthaul Compression Control for Shared Fronthaul Access Networks
There is a widely held belief that future radio access network architectures will be characterized by increased levels of virtualization, whereby base station functionalities, traditionally residing at a single location, will be scattered across different logical entities while being interfaced via...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) |
| Repositorio: | r-CTTC. Repositorio Institucional Producción Científica del Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) |
| OAI Identifier: | oai:cttc.fundanetsuite.com:p7691 |
| Acceso en línea: | https://cttc.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=7691 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85141121312&doi=10.1109%2fMCOM.001.2100959&partnerID=40&md5=63399be1eede8478f8f1d391c5b335a0 |
| Access Level: | acceso abierto |
| Palabra clave: | 5G mobile communication systems Computer architecture Network architecture Radio access networks Radio links Scheduling 3GPP 5g mobile communication Access network Compression strategies Downlink Dynamic scheduling Mobile communications Signal handling Sounding reference signals Uplink Modulation |
| Sumario: | There is a widely held belief that future radio access network architectures will be characterized by increased levels of virtualization, whereby base station functionalities, traditionally residing at a single location, will be scattered across different logical entities while being interfaced via high-speed fronthaul (FH) links. For the deployment of such FH links, operators are faced with the challenge of maintaining acceptable radio access performance while at the same time keeping deployment costs low. A common practice is to exploit statistical multiplexing by allowing several cells to utilize the same FH link. As a result, in order to cope with the resulting aggregated traffic, different techniques can be used to reduce the required FH data rates. Herein, we focus on FH compression control strategies for multiple-ceilimuitiple-user scenarios sharing a common FH link. We propose various methods for sounding reference signal (SRS) handling, and analyze different FH-aware modulation data compression and scheduling strategies. Considering a full system setup, including the radio and FH access networks, numerical evaluation is conducted using a 5G NR system-level simulator implemented in ns-3. Simulation results show that under stringent FH capacity constraints, optimized modulation compression strategies provide significant user-perceived throughput gains over baseline strategies (between 5.2 × and 6.9 ×). On top of them, SRS handling methods achieve additional 2 to 41 percent gains. © 1979-2012 IEEE. |
|---|