| 摘要 |
In a code division multiple access CDMA system a dispatch call is established between two mobile units 10 and 12. The system includes a CDMA 2000 system providing for the dispatch data services. This requires that messages and bearer traffic are processed by radio link protocol. The CDMA 2000 system supports the FCH and DCCH channels. If the speaker's forward link is interference limited, 26, then a DCCH channel is assigned to the speaker, 28. If the speaker's reverse link is interference limited then a FCH channel is assigned to the speaker. In addition if there is a low battery level of the speaker, an FCH channel is assigned to the speaker, 30. When the speaker changes, 40, the FCH and DCCH channels for the speaker and listener are switched dynamically, 44-48. |
