Unify OpenStage WL3 Plus Specifiche

System Planning OpenStage WL 3 / OpenStage WL3 Plus Planning Guide A31003-M2000-P102-2-76A9

10 GeneralCustomer Is Adding 802.11n APs and Is Also Keeping Old APs It is not uncommon that, when upgrading a b/g WLAN with a second radio for 5.0 GH

General 11Customer buys new APs for the a/n-radio only and keeps the old single-radio b/g APs intact. New APs set to use only the a-radio. High throug

12 GeneralCustomer buys new APs for the n-radio and keeps the old a/b/g APs intact. Running dual 5.0 GHz radios Customer Has Already Invested in 802.1

General 13802.11 a-radio Support in the Handset802.11a Radar Protection, Dynamic Frequency Selection (DFS)Several of the radio channels (the DFS-chann

14 GeneralDue to the regulations of the DFS channels, a client that does not support radar detection is not allowed to actively scan for APs in these

General 15The MIMO features require more than one radio channel and antennas, which will consume more power and hardware space in the handset. Double

16 Wired LAN/Backbone RequirementsBattery LifetimeSince the number of charging cycles needed are dependent on the power consumption, the life-time of

Wired LAN/Backbone Requirements 17IEEE 802.11 Priority FieldThe 802.11 User Priority is sent using the 2 bit QoS Control Field in the 802.11 MAC heade

18 Security ConsiderationsDownlink to Wired NetworkThe AP will preserve the 802.1D user priority by copying the value into the 802.1p priority tag. Th

Basic Cell Planning 19For handover times with different security settings on particular WLAN infrastructure, see the ap-propriate configuration notes

Our Quality and Environmental Management Systems are implemented according to the requirements of the ISO9001 and ISO14001 standards and are certified

20 Basic Cell PlanningThe 5 GHz band consists of several sets of channels listed in the table below. See also Section , “802.11a Radar Protection, Dyn

Basic Cell Planning 21The recommendations above ensure a fading margin of approximately 20dB which should be ap-propriate for “normal” environments.NO

22 Co-Channel InterferenceFigure 4. NOTE: The attenuation for the -a radio is, from a general point of view, higher than for -b/g. Multipath Propaga

Co-Channel Interference 23There are 19 channels available in total in Europe and 24 in the USA (FCC channels), whereof there are four non-DFS in Europ

24 AP Placement for Optimal PerformanceHandset a/b/gIf the handset detects an energy level that is stronger then -70 dBm or confirmed 802.11 traffic i

AP Placement for Optimal Performance 25The AP distance to avoid co-channel interference is described in Section , “Clear Channel Assess-ment, CCA”, on

26 Infrastructure Dependant FeaturesFigure 8. Figure 7 It is recommended to place an AP in the middle of the walking path to reduce roaming between A

Tools in the Handset 27Unfortunately, IEEE 802.11 does not provide any procedure for a smooth transition of stations be-tween APs. Instead, the move i

28 AP ConfigurationShort/Long Radio PreambleThis only affects the transmissions at 802.11b speeds. The use of short preamble reduces the time spent on

AP Configuration 29Transmission PowerBy default the handset adapts its output power to the APs, but the output power can be configured in five steps b

Contents 3ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5General . . . . . . . . . . . . . .

30 AP ConfigurationRecommended Security Settings a/nItem Recommended SettingsDescriptionRadio 802.11a The transmission rate will be up to 65 Mbps. Tra

Known Problems 310.0.1 Quality of Service Identifier Infrastructure Dependant Features Known Problemsb/g/n802.11 operates in the 2.4GHz Industrial Sc

32 Abbreviations and GlossaryIf the wired network contains a lot of APs connected to the same switch or if wireless traffic has to be route to a commo

Abbreviations and Glossary 33Greenfield modeA pure high throughput (HT) mode where packets are transmitted without a lega-cy-compatible part.IEEE Inst

34 Abbreviations and GlossaryWLAN Wireless Local Area Network (LAN):A type of LAN in which data is sent and received via high-frequency radio waves ra

4 ContentsAP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Regulatory Domains - 802.11d . . . . . . . . . . .

Introduction 5IntroductionThis document is intended as a guide for considerations on WLAN infrastructure planning and in-stallation to obtain maximum

6 GeneralGeneralIntroduction to Wireless PlanningAdding Voice to a Wireless LANData and voice traffic has different characteristics and thus put diffe

General 7A WLAN network can either operate on the IEEE 802.11 2.4 GHz (b/g) or a 5 GHz (a) band. De-pending on the WLAN APs used, a network may suppor

8 GeneralThus, if using separate VLANs for voice and data devices, for example having a voice VLAN with a Unite messaging server, there must be a rout

General 9Combination of Data and Voice Channel AssignmentsThe handset supports both a and b/g, and it is recommended to have the data and voice traffi