Patent ID: 8102871
Filing Date: 2012-01-24
Classification: H04L,H04W

Abstract:
1. A method for requesting and granting of a medium reservation modification wherein a master device allocates a medium using reservations that are observed by other devices sharing the medium and a slave device complies with reservations by holding data for transmission until its reservation in time arrives, the method comprising: contending, by the master device, for the medium to obtain a reserved service period, wherein contending is performed between a plurality of devices that each have an ability to take over the medium during a contention period, wherein the plurality of devices does not include the slave device; determining, at the slave device, a reserved length of an upcoming transmitting opportunity reserved for that slave device, wherein the upcoming transmitting opportunity is part of the reserved service period reserved by the master device after contending for the medium and making a medium reservation; determining, at the slave device, a desired length for transmitting data from the slave device over the medium; comparing the reserved length and the desired length to determine if a medium reservation modification is warranted; if the medium reservation modification is warranted, requesting the medium reservation modification during the reserved service period, using the slave device and the medium; and determining, at the master device, whether to grant or deny the medium reservation modification and conveying the determination to the slave device.