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Scheduling for Back...
Scheduling for Backhaul Load Reduction in CoMP
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- Lakshmana, Tilak Rajesh, 1980 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Li, Jingya, 1986 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Botella Mascarell, Carmen, 1979 (author)
- Universitat de Valencia
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- Papadogiannis, Agisilaos, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Svensson, Tommy, 1970 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- ISBN 9781467359399
- 2013
- 2013
- English.
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In: IEEE Wireless Communications and Networking Conference, WCNC. - 1525-3511. - 9781467359399 ; , s. 227-232
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Abstract
Subject headings
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- Coordinated multi-point (CoMP) transmission has received a lot of attention, as a way to improve the system throughput in an interference limited cellular system. For joint processing in CoMP, the user equipments (UEs) need to feed back the channel state information (CSI), typically to their serving base stations (BSs). The BS forwards the CSI to a central coordination node (CCN) for precoding. These precoding weights need to be forwarded from the CCN to the corresponding BSs to serve the UEs. In this work, a feedback load reduction technique is employed via partial joint processing to alleviate the CSI feedback overhead. Similarly, to achieve backhaul load reduction due to the precoding weights, scheduling approaches are proposed. The state of the art block diagonalization solution is compared with our proposed constrained and unconstrained scheduling. Our main contribution is the method of choosing the best subset of the BSs and UEs at the CCN that yields the best sum rate under the constraint of efficient backhaul use. In particular, with constrained scheduling, the choice of a smaller subset proportionally reduces the backhaul load. Simulation results based on a frequency selective WINNER II channel model, show that our proposed constrained scheduling outperforms the block diagonalization approach in terms of the average sum rate per backhaul use.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Kommunikationssystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Communication Systems (hsv//eng)
Keyword
- Zero Forcing
- Backhaul Load Reduction
- Scheduling
- Partial Joint Processing
- CoMP
Publication and Content Type
- kon (subject category)
- ref (subject category)
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