Alternate channel for carrying selected message types

Details Alternate channel for carrying selected message types Alternate channel for carrying selected message types

2005-10-11

2005-10-11

Hsu, Alpus H. (Department: 2665)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S347000, C370S442000, C455S450000, C455S509000

Reexamination Certificate

active

06954448

ABSTRACT:
In an illustrative embodiment of the present invention, a channel is allocated to carry messages from each of multiple subscriber units to a base station. Selected messages generated by a subscriber unit that would otherwise be transmitted over an assigned reverse link traffic channel are instead encoded and transmitted to the base station over a shared reverse link channel. Preferably, the shared reverse link channel is time-slotted and each subscriber unit transmits information to the base station in an assigned time slot so that the base station receiving the messages can identify from which subscriber unit a message is sent. Certain bits in a time slot of the shared channel as set by a subscriber unit can be used to communicate a particular message to the base station. For instance, a single bit that is transmitted in a time slot can be encoded to transmit a substitute message from one of the multiple subscriber units to a base station, where the setting of the bit itself indicates a message type.

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