METHODS AND SYSTEMS FOR TRANSMISSION OF MULTIPLE MODULATED SIGNALS OVER WIRELESS NETWORKS

摘要

A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. Currently active CPEs request bandwidth using unused portions of uplink bandwidth that is already allocated to the CPE. The CPE is responsible for distributing the allocated uplink bandwidth in a manner that accommodates the services provided by the CPE.

主权项

1. A method of operating a wireless communication system comprising:
registering a wireless subscriber unit with a base station in the wireless communication system and enabling establishment of communication between the wireless subscriber unit and the base station; the wireless subscriber unit transmitting an explicit message to the base station for requesting the base station to provide an allocation of uplink (UL) bandwidth to the wireless subscriber unit in which to transmit a bandwidth request; the base station transmitting to the wireless subscriber unit the allocation of UL bandwidth; the wireless subscriber unit transmitting to the base station the bandwidth request within the allocation of UL bandwidth, the bandwidth request indicating a required amount of UL bandwidth for UL transmission; the base station providing an UL bandwidth grant to the wireless subscriber unit in response to the bandwidth request; the wireless subscriber unit allocating the UL bandwidth grant between two or more QoS queues established at the wireless subscriber unit.