Performance evaluation of a fixed relay concept for next generation wireless systems

Esseling, N.; Walke, Bernhard; Pabst, R.

doi:10.1109/pimrc.2004.1373800

Cited by 41 publications

(31 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So relaying offers more than just higher SIN R areas around RNs. In contrast to the analytic approach here, simulation results can be found in [14].…”

Section: B Analytical Resultsmentioning

confidence: 99%

An FDD Multihop Cellular Network for 3GPP-LTE

Schoenen

Halfmann

Walke

2008

VTC Spring 2008 - IEEE Vehicular Technology Conference

View full text Add to dashboard Cite

Abstract-The future cellular radio networks like 3G-LTE [1] are based on an OFDMA physical layer. The duplex scheme is preferably frequency division (FDD) because of its advantages in long range. Huge area coverage in a cost-efficient way is important problem for the early deployment. Time after time the demand in densely populated areas will grow, so a higher cell capacity over the area is needed. The requirements are expensive to solve with a traditional cellular architecture, because a fibre line access will be needed at any base station location, which are sometimes only a few 100 meters apart. This paper deals with Multihop operation as an option to improve the coverage as well as the capacity issue at low cost. Homogeneous Relays act like Base Stations, but without the need of a cable or fibre access. They are simply fed by the same radio technology in their first hop.The contribution of this paper is especially the multihop operation in the FDD mode and performance results for the throughput on the MAC-layer. The results were obtained with an analytic model, numerically evaluated with Matlab.

show abstract

“…So relaying offers more than just higher SIN R areas around RNs. In contrast to the analytic approach here, simulation results can be found in [14].…”

Section: B Analytical Resultsmentioning

confidence: 99%

An FDD Multihop Cellular Network for 3GPP-LTE

Schoenen

Halfmann

Walke

2008

VTC Spring 2008 - IEEE Vehicular Technology Conference

View full text Add to dashboard Cite

show abstract

“…When applying frame based MAC protocols for multi-hop operation, e.g., in RECs [2,7] overhead reduction is even more important, since signalling for channel access control must be performed per hop and overhead grows with increased number of hops. FDTs may keep the amount of signalling overhead in RECs small, e.g., when fixed or partly fixed connections are used for data relaying.…”

Section: Frame Descriptor Tables In Multi-hop Networkmentioning

confidence: 99%

“…FRNs may also be used to serve areas shadowed from the BS reducing the percentage of non-covered area in a cell. Since FRNs apply decodeand-forwarding of packets in the MAC layer, improvements to the protocol stack might be neccessary [2,6,7]. 5.…”

Section: Multi-hop Operation Introduced To Broadband Cellular Networkmentioning

confidence: 99%

Efficient Multi-hop Communication in Beyond 3G Mobile Radio Networks

Klein

Einhaus

Federlin

et al. 2007

Wireless Pers Commun

View full text Add to dashboard Cite

We propose and evaluate the Frame Descriptor Table (FDT) concept, a method to increase efficiency of signalling resource allocation in frame based Medium Access Control (MAC) protocols. MAC protocols for Beyond 3G mobile radio networks, also known as IMT-Advanced systems, will operate on high data rate channels resulting in short packet transmission duration. The scheduling overhead per packet must also be reduced, correspondingly. The new concept is suitable also to reduce the MAC control overhead spent per hop in mobile radio systems with Relay Enhanced Cells (REC)s that apply multi-hop communication by dynamically allocating TDMA channels. This paper's focus is on performance evaluation of multi-hop scenarios using analytical models and event-driven stochastic simulations. It is shown that FDT based MAC protocols are suited to increase throughput and reduce delay in REC based cellular radio systems.Keywords Relay enhanced cell · Multi-hop · MAC protocol · Analysis · Simulation · Frame descriptor table · WINNER · Quality of service · Beyond 3G · IMT-advanced · IEEE 802.11e · IEEE 802.16a · HiperLAN/2 AbbreviationsACH Access feedback channel B3G Beyond 3rd generation BCH Broadcast channel BS Base station CDMA Code division multiple access DECT Digital enhanced cordless telecommunications DL Downlink EXRR Exhaustive round robin

show abstract

“…Relay stations, which have no direct backhaul connection to the network, seem to be a cost-effective solution to this. The adoption of the relay concept in dense urban scenarios has been studied in Tameh et al [2003], Esseling et al [2004], Schultz et al [2003], Pabst et al [2004], and Doppler et al [2008], where relays can be used to improve coverage on the street among high rising concrete jungle, for example the Manhattan-like scenario as described in Esseling et al [2004], Schultz et al [2003], Pabst et al [2004], and Doppler et al [2008], in order to boost the supporting traffic with minimal cost. In rural areas, residential buildings may be vastly distributed within a dense vegetation area with irregular terrain.…”

Section: Introductionmentioning

confidence: 99%

Multihop relaying for broadband wireless access systems at 800 and 3500 MHz in rural areas

2014

View full text Add to dashboard Cite

This paper addresses the coverage enhancement for broadband wireless access (BWA) at 800 and 3500 MHz in a rural scenario in north Germany using multi-hop relay concepts. The investigation is divided into two phases: In phase I, the coverage of a single BWA system in a rural area is predicted and verified with measurement data. In phase II, the coverage from the BWA system is analyzed and enhanced through the deployment of relay stations. The number of relay stations required for each carrier frequency is determined, and the positions of the relay stations are identified via three different relay placement algorithms, namely path-loss-based, distance-based, and hybrid algorithms. At 800 MHz, the path-loss-based algorithm requires seven relay stations to achieve an overall coverage of 95%. The hybrid and distance-based algorithms require 11 and 14 relay stations, respectively, to achieve the same coverage. At 3500 MHz, path-loss based and hybrid algorithms require 19 and 16 relay stations, respectively, to achieve the same coverage. The distance-based requires 20 relay stations to achieve an overall coverage of 82%. Further increase of relay stations has led to higher interference. Lastly, the transmit power of the relay station is optimized via an intelligent power allocation scheme. The results show that 20% of the total transmit powers from 14 relay stations can be saved at 800 MHz whereas 18% of the total transmit powers from the 20 relay stations can be saved at 3500 MHz.

show abstract

Performance evaluation of a fixed relay concept for next generation wireless systems

Cited by 41 publications

References 4 publications

An FDD Multihop Cellular Network for 3GPP-LTE

An FDD Multihop Cellular Network for 3GPP-LTE

Efficient Multi-hop Communication in Beyond 3G Mobile Radio Networks

Multihop relaying for broadband wireless access systems at 800 and 3500 MHz in rural areas

Contact Info

Product

Resources

About