1 / 7

後卓越計畫 進度報告 楊舜仁老師實驗室 2008.01.07

後卓越計畫 進度報告 楊舜仁老師實驗室 2008.01.07. Objective. Investigate the bandwidth management mechanisms for IEEE 802.16j networks. The goal of bandwidth management increase system capacity increase bandwidth utilization increase system throughput reduce new connection blocking probability

brier
Télécharger la présentation

後卓越計畫 進度報告 楊舜仁老師實驗室 2008.01.07

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 後卓越計畫 進度報告 楊舜仁老師實驗室 2008.01.07

  2. Objective • Investigate the bandwidth management mechanisms for IEEE 802.16j networks. • The goal of bandwidth management • increase system capacity • increase bandwidth utilization • increase system throughput • reduce new connection blocking probability • reduce handoff connection force-termination probability • reduce the number of handoffs

  3. IEEE 802.16jMultihop Relay Network • The main concept of multihop relay network is to establish relay stations (RS) as relay media between BSs and MSs. • RS: lower power, smaller coverage (relay station cell, RS-cell) • BS: higher power, larger coverage (base station cell, BS-cell)

  4. 100 20 25 10 5 20 20 IEEE 802.16j Frame Structure for Data Transmission • In IEEE 802.16 networks, each frame has a fixd duration. • Each frame contains one downlink and one uplink subframe, and the frame is diveided into an integer number of physical time slots, which help to partition the bandwidth easily. • In IEEE 802.16j, the downlink path includes BS to MS, BS to RS and RS to MS, while the uplink path includes MS to BS, RS to BS and MS to RS. The radio resource in IEEE 802.16j may be allotted to RSs in a pre-determined and fixed way.

  5. x-y Bandwidth Repacking

  6. Problem Statement ofBandwidth Repacking • Assume that there are idle time slots in RS-cellm, but no repacking candidates in RS-cellm due to no MS directly served by BS. idle time slots no available time slots

  7. Bandwidth Carrying (1) under-loaded over-loaded (2)

More Related