Relay Architectures for 3GPP LTE-Advanced

By Steven W. Peters, Ali Yazdan Panah, Kien T. Truong, Robert W. Heath. EURASIP Journal on Wireless Communications and Networking, 2009

329 citations recorded by the source corpus.

The Third Generation Partnership Project's Long Term Evolution-Advanced is considering relaying for cost-effective throughput enhancement and coverage extension. While analog repeaters have been used to enhance coverage in commercial cellular networks, the use of more sophisticated fixed relays is relatively new. The main challenge faced by relay deployments in cellular systems is overcoming the extra interference added by the presence of relays. Most prior work on relaying does not consider interference, however. This paper analyzes the performance of several emerging half-duplex relay strategies in interference-limited cellular systems: one-way, two-way, and shared relays. The performance of each strategy as a function of location, sectoring, and frequency reuse are compared with localized base station coordination. One-way relaying is shown to provide modest gains over single-hop cellular networks in some regimes. Shared relaying is shown to approach the gains of local base station coordination at reduced complexity, while two-way relaying further reduces complexity but only works well when the relay is close to the handset. Frequency reuse of one, where each sector uses the same spectrum, is shown to have the highest network throughput. Simulations with realistic channel models provide performance comparisons that reveal the importance of interference mitigation in multihop cellular networks.

Subfields: Computer Networks and Communications, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/8a10ce17bcba0968398fe8f5a96a151d385f4d3f

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Citations in the corpus

Tractable Model for Rate in Self-Backhauled Millimeter Wave Cellular Networks (2014, background): “This architecture is quite different from the mmWave based point-to-point backhaul [21] or the relaying architecture [22] already in use, as (a) the BS with wired backhaul serves multiple BSs, and (b) access and backhaul links share the total pool of available resources at each BS.”
Millimeter-Wave Cellular Wireless Networks: Potentials and Challenges (2014, background): “Carrier aggregation was introduced in release 10 of 3GPP LTE-Advanced primarily to increase peak throughputs.”
A Survey of Self Organisation in Future Cellular Networks (2013, background): “Different relay architectures have been proposed in [116] for LTE-Advanced.”
Game Theory in Wireless and Communication Networks (2008, background): “Furthermore, the performance of different relaying strategies in an LTE-Advanced network is studied in [389].”