Patent ID: 8335533
Filing Date: 2012-12-18
Classification: H04W

Abstract:
1. A method for providing group calls and sharing communication channels in the group calls in a wideband code division multiple access (WCDMA) wireless communication system based on Universal Terrestrial Radio Access (UTRA) Frequency Division Duplex (FDD), comprising: providing in the WCDMA system a group call mechanism that includes a group identification number for identifying a group of members for a group call from one member to other members of the group, group member identification numbers for identifying respective members of the group, and member location information on locations of respective members in the WCDMA system; using the group identification number and group member identification numbers to (1) provide sharing of a channel resource members of a group during a group call and (2) screen out sharing of the channel resource by other users subscribed to the WCDMA system; assigning one forward dedicated channel (DCH) per group member, located in a sector associated with a base station, in a group of members associated with a group call to carry signaling messages associated with the group call and power control information; having all group members in the sector to share one forward dedicated shared channel (DSCH) to carry user data associated with the group call; and controlling a plurality of mobile stations associated with the group call, upon release of the group call, to continuously monitor one or more forward channels without using discontinuous reception during a timer period to effect a reconnect to the group call if the plurality of mobile stations are paged during the timer period; and controlling the plurality of mobile stations, upon an expiration of the timer period, to monitor a paging channel with discontinuous reception.