5G • 5G-Advanced (Rel-18)
Cell-Free Distributed MIMO
Rel-18 Cell-Free Distributed Antenna Topologies
Ubiquitous wireless architecture where dozens of distributed radio heads cooperate seamlessly without cell boundaries, ensuring uniform gigabit coverage.
Technical Explanation
Traditional cellular networks suffer from lower performance at cell borders. Release 18 advances the transition toward Cell-Free Distributed MIMO, where dozens of access points spread across buildings or city centers connect to a centralized edge baseband unit (BBU). Radio heads dynamically form tailored multi-TRP clusters around individual moving users, rendering cell borders obsolete.
Key Functions
- Eliminates traditional cellular cell boundaries and cell-edge performance drop-offs
- Forms personalized, dynamic cooperative antenna clusters tracking individual moving users
- Delivers uniform 1 Gbps+ data rates anywhere within the coverage footprint
- Serves as the vital architectural stepping stone toward native 6G cell-free massive MIMO
Specifications
3GPP TR 38.859, TS 38.300 (Rel-18)
Interfaces
eCPRIF1Uu
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