Evaluation Of Power Line Communication Equipment In Domestic

Transcript

Evaluation of Power Line Communication Equipment in Domestic Networks Anna Papaioannou, Niovi Pavlidou Dept. of Electrical & Computer Engineering Aristotle University of Thessaloniki Greece PLC Workshop 2008 This work was performed within the framework of the project PENED 2003, funded by the European Union - European Social Fund and from the GSRT of the Hellenic Ministry of Development. Introduction (1) { { Large variety of PLC equipment available at the market Different technologies/manufactures cannot ensure: z z { Interoperability Coexistence Other problems z z Interference Noise Introduction (2) General concept of measurements { In-home powerline network: z z { Existing topology is used Common domestic loads are present Measurements regarding: 1. 2. 3. Coexistence Not-recommended plug-ins (power strips, extension cords) that are however convenient Noise sources (AC adaptors, chargers) Netgear XE102 (14Mbps) { Specifications - HomePlug 1.0 - Frequency band: 4.3MHz - 20.9MHz - Cover area: 5000 square feet - Speed: 14Mbps Netgear HDX101 (200Mbps) { Specifications - Universal Powerline Association (UPA) Digital Home Specification (DHS) - Frequency band: 2MHz - 32MHz - Power consumption: 6.3W - Speed: 200Mbps (80Mbps real) Panasonic BL-PA100A { Specifications - High Definition PLC (HD-PLC) - Frequency band: 4MHz - 28MHz - Power consumption: 4W - Communication distance: 150m - Speed: 190 Mbps [70Mbps real (UDP)] Ethernet to powerline adapters Vendor Model Standard Speed Netgear XE102 HomePlug 1.0 14 Mbps Netgear HDX101 UPA Digital Home Specification (DHS) 200 Mbps (real more than 80Mbps) Panasonic BL-PA100A HD-PLC 190Mbps (70Mbps real (UDP) Measurement set-up (1) { { { { Single phase apartment (120 square meters) Communication between 1 desktop and 1 laptop PC… …using a pair of adapters IPERF tool to measure: z z z Bandwidth Jitter Packet loss Measurement set-up (2) { { { { UPD datagrams (1470 bytes) The offered load (sending rate) increases gradually Each measurement is the average value of 1 minute test Coexistence measurements: the 2nd pair of adapters (interfering pair) operates in different rooms Measurement results (1) Netgear XE102 - Coexistence Mean decrease Panasonic: 19.3% Netgear HDX101: 22.17% Measurement results (2) Netgear XE102 – Different plug ins Mean decrease Power strip: 32.32% Extension cord: 9.62% Measurement results (3) Netgear HDX101 - Coexistence Mean decrease Panasonic: 36.92% Netgear XE102: 79.75% (Operation mode of Netgear HDX101 not interfering with HomePlug network) Measurement results (4) Netgear HDX101 - Different plug ins Mean decrease Power strip: 11.27% Extension cord: 4.82% Measurement results (5) Panasonic - Coexistence Mean decrease Netgear HDX101: 43.32% Measurement results (6) Panasonic - Different plug ins Mean decrease Power strip + AC adaptor: 13.65% Power strip + AC adaptor + charger: 16.13% Measurement results (7) Panasonic - Interference Mean decrease Charger in the same room: 16.65% Discussion (1) { { Netgear XE102 - Max measured rate (~6.5Mbps) is the half of the nominal (14Mbps) - Greater decrease with power strip Netgear HDX101 - Max measured rate (~40Mbps) is the half of the nominal (80Mbps) - Operation mode for avoiding interference with HomePlug: considerable performance cost Discussion (2) { Panasonic BL-PA100A - Max measured rate (~60Mbps) is close to the nominal (70Mbps) - Measured throughput Linear relation until 60Mbps Sudden decrease for 65Mbps offered load Above 70Mbps the measured throughput is half the offered load THANK YOU FOR YOUR ATTENTION!