| 摘要 |
In one aspect, a wireless device (10) sends a synchronization group identifier to a network control apparatus (40,70,80) identifying a synchronization group of wireless devices. If the wireless device (10) is notified that no other devices of the synchronization group are connected to the control apparatus (40,70,80), the wireless device (10) transmits a timing reference to and agrees an extended discontinuous reception (DRX) time period with the control apparatus (40,70,80). Otherwise, the wireless device (10) receives a timing reference and an extended discontinuous reception time period from the control apparatus (40,70,80). The wireless device (10) periodically enters an idle state and powers up for reception in accordance with at least the timing reference and the extended discontinuous reception time period. In another aspect, plural base stations (40) each use a common timing reference and a common extended discontinuous reception time period in controlling the operation of extended discontinuous reception by a synchronization group of wireless devices (10). In particular the invention lies in using DRX time periods for machine-type communications (MTC). |
