Selective call receiver having extended battery saving capability
First Claim
1. A selective call receiver comprising:
- means for receiving a signal including a preamble followed by at least two message batches, a first message batch included within the at least two message batches comprising an ordered batch identifier specifying a designated message batch included within the at least two message batches; and
means for supplying power to the selective call receiver to receive the preamble and the ordered batch identifier included within the first message batch, said means for supplying power thereafter supplying power during the designated message batch specified by the ordered batch identifier included within the first message batch.
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Accused Products
Abstract
A method and apparatus for providing extended battery saving operation in a conventional selective call signaling protocol, such as the POCSAG signaling protocol includes the transmission of an ordered batch identifier code word in the first frame following a preamble transmission. Upon detection of the ordered batch identifier code word, those selective call receivers capable of extended battery saving operation would supply power to the receiver only during those batches assigned to the receiver group to which the selective call receiver belongs, such as for every second or fourth batch transmission. The method for providing extended battery saving capability is transparent to conventional selective call receivers operating within the system.
172 Citations
15 Claims
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1. A selective call receiver comprising:
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means for receiving a signal including a preamble followed by at least two message batches, a first message batch included within the at least two message batches comprising an ordered batch identifier specifying a designated message batch included within the at least two message batches; and means for supplying power to the selective call receiver to receive the preamble and the ordered batch identifier included within the first message batch, said means for supplying power thereafter supplying power during the designated message batch specified by the ordered batch identifier included within the first message batch. - View Dependent Claims (2, 3, 4)
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5. A message transmission system comprising:
- transmitter means including
means for designating at least two groups of selective call receivers, means for ordering for transmission the messages intended for the groups of selective call receivers into a sequence of ordered message batches, means for generating an ordered batch identifier identifying the transmission batch sequence as being ordered, and means for transmitting a preamble followed by transmitting the ordered batch identifier within a first message batch of the ordered message batch sequence; and
a plurality of selective call receivers designated to operate in at least two groups, the receivers includingmeans for designating a group to which each of said plurality of selective call receivers belongs, a receiving means, first means for supplying power to said receiver means for receiving and detecting the transmitted preamble followed by the ordered batch identifier transmitted within the first message batch of the ordered message batch sequence, and second means for further supplying power to said receiver means for receiving the message batches of the ordered message batch sequence directed to the designated group of selective call receivers, in response to the ordered batch identifier detected within the first message batch of the ordered message batch sequence. - View Dependent Claims (6, 7, 8, 9, 10)
- transmitter means including
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11. A selective call receiver for operation in a communication system transmitting messages for at least two receiver groups, the messages including a preamble followed by an ordered batch identifier within a first message batch of a sequence of ordered message batches, said selective call receiver comprising:
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means for designating one of at least two groups to which the selective call receiver belongs, a receiving means, means for supplying power to said receiver means for receiving and detecting the transmitted preamble followed by the ordered batch identifier transmitted within the first message batch of the ordered message batch sequence, and means, responsive to the ordered batch identifier detected within the first message batch of the ordered message batch sequence, for further supplying power to said receiver means for receiving the batches of the ordered batch sequence directed to the designated group of selective call receivers. - View Dependent Claims (12, 13, 14, 15)
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Specification