期刊
IEEE TRANSACTIONS ON COMMUNICATIONS
卷 69, 期 12, 页码 8116-8131出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCOMM.2021.3113385
关键词
Multiplexing gains (MG); mixed delay constraints; delay tolerant coordinated processing
资金
- European Union [694630]
This paper analyzes the multiplexing gains for simultaneous transmission of delay-sensitive and delay-tolerant data over interference networks. Different coding schemes are proposed and information-theoretic converses are established for various network models. In some cases, it is possible to achieve the maximum gain for delay-sensitive data without penalizing the total gain.
This paper analyzes the multiplexing gains (MG) for simultaneous transmission of delay-sensitive and delay-tolerant data over interference networks. In the considered model, only delay-tolerant data can profit from coordinated multipoint (CoMP) transmission or reception techniques, because delay-sensitive data has to be transmitted without further delay. Transmission of delay-tolerant data is also subject to a delay constraint, which is however less stringent than the one on delay-sensitive data. Different coding schemes are proposed, and the corresponding MG pairs for delay-sensitive and delay-tolerant data characterized for Wyner's linear symmetric network and for Wyner's two-dimensional hexagonal network with and without sectorization. Information-theoretic converses are established for these models. For Wyner's linear symmetric network the bounds match whenever the cooperation rates are sufficiently large or the delay-sensitive MG is small or moderate. These results show that on Wyner's symmetric linear network and for sufficiently large cooperation rates, the largest MG for delay-sensitive data can be achieved without penalizing the maximum sum-MG of both delay-sensitive and delay-tolerant data. Our achievable schemes show that a similar conclusion holds for Wyner's hexagonal network only for the model with sectorization. In the model without sectorization, a penalty in sum-MG is incurred whenever one insists on a positive delay-sensitive MG
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