Patent ID: 8437285
Filing Date: 2013-05-07
Classification: H04W,Y02D

Abstract:
1. A method of operating a wireless device, the method comprising: a wireless device sending a synchronisation group identifier to a control apparatus of a wireless network, the synchronisation group identifier identifying a synchronisation group of wireless devices to which the wireless device belongs; if the wireless device is notified that no other devices of said synchronisation group are connected to the control apparatus, the wireless device transmitting a timing reference to the control apparatus and agreeing an extended discontinuous reception time period with the control apparatus, said extended discontinuous reception time period being longer than an ordinary discontinuous reception time period used by the device during ordinary discontinuous reception; else, the wireless device receiving a timing reference and an extended discontinuous reception time period from the control apparatus; the wireless device periodically entering an idle state and powering up for reception in accordance with at least the timing reference and the extended discontinuous reception time period.