A density evolution recursion characterizes the TIN-SIC receiver of SB-IDMA and predicts a phase transition between high-error and low-error operating regimes.
Evolution of the 5G New Radio Two-Step Random Access towards 6G Unsourced MAC
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
This report summarizes some considerations on possible evolutions of grant-free random access in the next generation of the 3GPP wireless cellular standard. The analysis is carried out by mapping the problem to the recently-introduced unsourced multiple access channel (UMAC) setup. By doing so, the performance of existing solutions can be benchmarked with information-theoretic bounds, assessing the potential gains that can be achieved over legacy 3GPP schemes. The study focuses on the two-step random access (2SRA) protocol introduced by Release 16 of the 5G New Radio standard, investigating its applicability to support large MTC / IoT terminal populations in a grant-free fashion. The analysis shows that the existing 2SRA scheme may not succeed in providing energy-efficient support to large user populations. Modifications to the protocol are proposed that enable remarkable gains in both energy and spectral efficiency while retaining a strong resemblance to the legacy protocol.
citation-role summary
method 1
citation-polarity summary
fields
cs.IT 1years
2025 1verdicts
CONDITIONAL 1roles
method 1polarities
use method 1representative citing papers
citing papers explorer
-
Density Evolution Analysis of Sparse-Block IDMA
A density evolution recursion characterizes the TIN-SIC receiver of SB-IDMA and predicts a phase transition between high-error and low-error operating regimes.