| 摘要 |
During idle periods in a non trunked mobile radio network, the base stations periodically transmit a channel-marking signal. While the channel-marking signal is being transmitted base stations in the same "channel", with adjacent coverage areas, announce information about the base station sending the channel-marking signal. Following the base station announcements, each mobile station checks the transmit frequency of the adjacent base station. If the signal from the adjacent base station is stronger than the signal from the base station to which the mobile was previously tuned, the mobile remains tuned to the new transmit frequency. Otherwise the mobile re-tunes to the original frequency.
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