D-Link DWC-1000 User Manual page 83

Wireless controller
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Wireless Controller
User Manual
firs t ran d o m n u mb er g en erated will b e a n u mb er b et ween 0 an d t h e n u mb er
s p ecified h ere. If t h e firs t ran do m b acko ff wait t ime exp ires b efo re t h e d at a
frame is s en t , a ret ry co un ter is in cremen ted an d t h e ran d o m b acko ff v alu e
(win d o w) is d o u b led . Do u b lin g will co n t in u e u n t il t h e s ize o f t h e ran d o m
b acko ff v alu e reach es t h e n u mb er d efin ed in t h e M aximu m Co n t en t io n
W in d o w. cwMax (Maxi mum Contenti on Wi ndow) : Th e v alu e s p ecified in
t h e M aximu m Co n t en t io n W in d o w is t h e u p p er limit (in millis eco n d s ) fo r
t h e d o u b lin g o f t h e ran d o m b acko ff v alu e. Th is d o u b lin g co n t in u es u n t il
eit h er t h e d at a frame is s en t o r t h e M aximu m Co n t en t io n W in d o w s ize is
reach ed . On ce t h e M aximu m Co n t en t io n W in d o w s ize is reach ed , ret ries
will co n t in u e u nt il a maximu m n u mb er o f ret ries allo wed is reach ed. TXOP
Li mi t: St at io n EDCA Paramet er On ly (Th e TXOP Limit ap p lies o n ly t o
t raffic flo win g fro m t h e clien t s t at io n t o t h e acces s p o in t .) Th e
Tran s mis s io n Op p o rt u n it y (TXOP) is an in t erv al o f t ime wh en a W M E
clien t s t at io n h as t h e rig h t t o in it iat e t ran s mis s io n s o n t o t h e wireles s
med iu m (W M ). Th is v alu e s p ecifies (in millis eco n d s ) t h e Tran s mis s io n
Op p o rt u nit y (TXOP) fo r clien t s t at ion s; t h at is , t h e in t erv al o f t ime wh en a
W M M clien t s t atio n h as t h e rig h t t o in it iat e t ran s mis s io n s o n t h e wireles s
n et wo rk.
81

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