Broadband Wireless Access

This chapter has discussed how a commonbroadcast medium can be shared among many contending users. Multiple access prools differ primarily by the amount of coordination needed to control potentially conflicting packet transmissions. Ato neextreme is random access where no coordinationis provideda ndp acket collisions arep ossible. Atthe other endo fthe spectrum, the class of fixed assignment access prools eliminates collisions entirely butpay the price ofadditional overhead required forsche...