| 摘要 |
A radio receives audio information on a first traffic channel in a radio frequency (RF) site. The radio receives, on the first traffic channel, an announcement of alternative traffic channels on which the audio information is also transmitted in adjacent RF sites. The radio determines signal strength indicators for the alternative traffic channels in the adjacent RF sites while continuing to receive the audio information on the first traffic channel. The radio determines that a signal strength associated with the first traffic channel is below a first threshold. Based on the determination and as a function of the scanning, the radio roams to a second traffic channel, selected from the alternative traffic channels, in an adjacent RF site where a signal strength associated with the second traffic channel is above a second threshold. The radio receives the audio information via the second traffic channel. |
| 主权项 |
1. A method comprising:
receiving, by a radio, audio information of a call on a first traffic channel in a radio frequency (RF) site; receiving, by the radio on the first traffic channel, an announcement of alternative traffic channels in adjacent RF sites, on which the audio information is also being transmitted; scanning, by the radio, signal strength indicators for one or more of the alternative traffic channels in the adjacent RF sites while continuing to receive the audio information on the first traffic channel; determining, by the radio, that a signal strength associated with the first traffic channel is below a first threshold; based on the determination and as a function of the scanning, roaming, by the radio, to a second traffic channel, selected from the alternative traffic channels, in an adjacent RF site where a signal strength associated with the second traffic channel is above a second threshold; and receiving, by the radio, the audio information of the call via the second traffic channel. |
