思科无线网络设计及部署.pptVIP

模块内容 部署方法 部署需求 Protocol Comparison 企业无线网 Coverage capacity 确定AP数量和位置 Z factor design Site Survey 验证无线网部署 部署方法 部署需求容量考虑 Protocol requirements 802.11b/g 802.11a Client devices WNIC PDA Phone Client density Typical Peak Expected throughput 802.11b is typically 2 Mbps 802.11g is typically 11-14 Mbps 802.11g is typically 2-4 Mbps with 802.11b clients presents 802.11a is typically 11-14 Mbps 协议比较 The standards that must be supported by an enterprise WLAN are usually dictated by the devices that require support. Currently 802.11b clients are predominant but what is right answer for your enterprise WLAN solution? 802.11b Pro: Highest market penetration Con: More interference noise may be found in the 2.4GHz band Con: Only provides 3 non-overlapping channels Con: Can suffer from multipath issues Con: Client driver quality (consumer versus enterprise) 802.11g Pro: Higher throughput Pro: OFDM technology reduces multipath issues Con: More interference noise may be found in the 2.4GHz band Con: Only provides 3 non-overlapping channels Con: Throughput degraded in the presence of 802.11b clients 802.11a Pro: Higher throughput Pro: OFDM technology reduces multipath issues Pro: Provides FCC 24 non-overlapping channels Con: Lower market penetration 802.11n Pro: MIMO/Channel combined/Packet Aggregation provide More Stable connection, higher performance and longer distance Con: Not finalized yet Con: Need more power 部署需求覆盖 Coverage Areas Full or partial Coverage Hole Goal 0% - 10% (Typically 2% – 5%) Building Construction Type Typical Offices (cubes and walled offices) Walled Offices (drywall office only) Walled Offices (brick and concrete walled offices) Other (example arenas, stock exchange, convention center, large warehouse) Building Characteristics Homogeneous – same construction type throughout Cubes and walled offices throughout and/or floor to floor Heterogeneous – mixed construction types Drywall office area with shipping warehouse in back 部署需求障碍物考虑 部署需求提问 How many acc