PERFORMANCE EVALUATION OF CONTENTION AND RESERVATION BASED

HYBRID MAC FOR NEXT GENERATION WIRELESS LANS

The next generat!n "er# hgh thr!$gh%$t WLAN& !%eratng at '( GH) *ea+ t! entre*#

ne, -$n.t!na* re/$re0ent& at 1!th the 0e+$0 a..e&& *a#er a& ,e** a& the %h#&.a*

*a#er2

T#%.a* 0e+$0 a..e&& &.he0e& *3e re&er"at!n !r .!ntent!n 1a&e+ &.he0e& are n!t

e--.ent en!$gh n+e%en+ent*# n th& -re/$en.# 1an+ an+ -!r the t#%.a* a%%*.at!n&

,h.h generate 1$r&t# a& ,e** a& .!n&tant +ata rate tra--.2

C!ntent!n 1a&e+ MAC %r!t!.!*& are 0!re -*ex1*e an+ e--.ent n re&!$r.e &harng 1#

1$r&t# tra--.4 1$t the %er-!r0an.e +egra+e& +$e t! the %re&en.e !- .!n&tant +ata rate

tra--.2 On the !ther han+ re&!$r.e re&er"at!n ,!r3& ,e** t! %r!"+e 5!S g$arantee& 1$t

at the .!&t !- re+$.e+ re&!$r.e $t*)at!n2

T! .a%ta*)e the a+"antage& !- 1!th the&e &.he0e&4 a h#1r+ a%%r!a.h & a+!%te+4

,heren re&er"at!n 1a&e+ an+ .!ntent!n 1a&e+ MAC &.he0e& .!ex&t2 E"en th!$gh

h#1r+ MAC ha& 1een a+!%te+ n "ar!$& ,re*e&& &tan+ar+&4 the e--.ent &%*ttng !- 

.hanne* t0e& 1et,een re&er"at!n an+ .!ntent!n %er!+& & &t** an !%en &&$e2

In th& %a%er a &.he0e -!r e--.ent &%*ttng !- .hanne* t0e& n 6(7288a+ net,!r3 &

%r!%!&e+ an+ the %er-!r0an.e .!0%ar&!n !- re&er"at!n !n*#4 .!ntent!n !n*# an+

h#1r+ MAC %r!t!.!*& & +!ne $&ng &0$*at!n&2 The &0$*at!n re&$*t& &h!, that the

h#1r+ &.he0e !$t%er-!r0& the .!ntent!n !n*# an+ re&er"at!n !n*# &.he0e& n .a&e !- 

6(7288a+ net,!r3&2

9e#,!r+&: C!ntent!n; re&er"at!n; Me+$0 a..e&& .!ntr!*; ,re*e&& LAN&; 5!S; H#1r+

MAC2