Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2006-05-23
2006-05-23
Jung, Min (Department: 2663)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S441000
Reexamination Certificate
active
07050411
ABSTRACT:
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 link limited, (26), then a DCCH channel is assigned to the speaker, (28). If the speaker's reverse link is link 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).
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Jung Min
Motorola Inc.
Wills Kevin D.
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