D-Link DWC-1000 User Manual page 81

Wireless Controller
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AIFS (Inter -Frame S pace): Th e A rb it rat io n In t er-Frame Sp acin g (A IFS)
s p ecifies a wait t ime fo r d at aframes . Th e wait t ime is meas u red in s lo t s .
Valid v alu es fo r A IFS are 1 t h ro u g h 255.
cwMi n (Mi ni mum Contenti on Wi ndow) : Th is p aramet er is in p u t t o t h e
alg o rit h m t h at d et ermin es t he in it ial ran d o m b acko ff wait t ime (win d o w) fo r
ret ry o f a t ran s mis sio n. Th e v alue s pecified h ere in t h e M in i mu m Co n t en tion
W in d o w is t h e u p per limit (in millis eco n d s ) o f a ran g e fro m wh ich t h e in it ial
ran d o m b acko ff wait t ime is d et ermin ed . Th e firs t ran d om 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 d o 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 u n t er 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. Va lid v alu es fo r
t h e cwmin are 1, 3, 7, 15, 31, 63, 127, 255, 511, o r 1024. Th e v alu e fo r
cwmin mu s t b e lo wer t h an t h e v alu e fo r cwmax.
cwMax (Maxi mum Contenti on Wi ndow) : Th e v alu e s p ecified h ere 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 dom 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 n t il a maximu m n u mb er o f ret ries allo wed is reach ed . Valid
v alu es fo r t h e cwmax are 1, 3, 7, 15, 31, 63, 127, 255, 511, o r 1024. Th e
v alu e fo r cwmax mu s t b e h ig h er t h an t h e v alu e fo r cwmin .
Max. B urs t Leng th: A P EDCA Paramet er On ly (Th e M ax. Bu rs t Len g t h
ap p lies o n ly t o t raffic flo win g fro m t h e acces s p o in t t o t h e clien t s t at io n .)
Th is v alu e s p ecifies (in millis eco n d s ) t h e M aximu m Bu rs t Len g t h allo wed
fo r p acket b u rsts o n t h e wireles s n et wo rk. A p acket b u rs t is a co llect io n o f
mu lt ip le frames t ran s mit t ed wit h o u t h ead er in f o rmat io n . Th e d ecreas ed
o v erh ead res ult s in h ig h er t h ro ugh put an d b et t er p erfo rman ce. Valid v alu es
fo r maximu m b u rs t len g t h are 0.0 t h ro u g h 999
Data 3 (B ack g round): Lo wes t p rio rit y q u eu e, h ig h t h ro u g h p u t . Bu lk
d at a t h at req uires maximu m t h ro u gh put an d is n o t t ime -s en sitiv e is s en t
t o t h is q u eu e (FTP d at a, fo r examp le).
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User Manual