Standby power savings with cumulative party check in mobile phones

Claim 2

A mobile station having improved battery life in standby mode comprising: a receiver for sequentially receiving repeated finite length data messages transmitted as radio signals from a base station; a data demodulator for processing said received signals to generate data values; a decoder to decode said data values to generate data bits and to produce an indication of correct or incorrect decoding based on cumulative majority voting on each of said data values; and a power-down timer for reducing the power consumption of any of the above components for a determined time after receiving said indication of correct decoding from said decoder.

Claim 3

A mobile station according to claim 1, wherein said determined time for power-down is until the beginning of the next message.

Claim 4

A mobile station according to claim 1, further comprising: a comparator for determining if said data bits contain a match with a part of said mobile station's telephone number to produce a match or mismatch indication.

Claim 5

A portable radio system having improved battery life in standby mode comprising: a receiver for sequentially receiving repeated finite length dam messages transmitted as Manchester-coded and frequency-modulated radio signals from a base station; a Manchester code demodulator for processing said received signals to demodulate said Manchester-coded FM and producing corresponding data bit values; a sync detector for processing said bit values to detect a predetermined data bit pattern signifying the beginning of a finite length message and producing a reset signal; a timing control unit for counting demodulated Manchester code symbols that is reset upon receipt of said reset signal; a decoder for further processing said bit values to determine a message and produce an indication if said message has been received error-free; and a power-down timer for reducing the power consumption of any of the above for a determined time after receiving an indication of error-free reception from said decoder.

Claim 6

A portable radio system having improved battery life in standby mode comprising: a receiver for sequentially receiving repeated finite length dam messages transmitted as Manchester-coded and frequency-modulated radio signals from a base station; a Manchester code demodulator for processing said received signals to demodulate said Manchester-coded FM and producing corresponding data bit values; a sync detector for processing said bit values to detect a predetermined data bit pattern signifying the beginning of a finite length message and producing a reset signal; a timing control unit for counting demodulated Manchester code symbols that is reset upon receipt of said reset signal; a decoder for further processing said bit values to determine a message and produce an indication if said message has been received error-free; and a power-down timer for reducing the power consumption of any of the above for a determined time after receiving an indication of error-free reception from said decoder.

Claim 7

A portable radio system according to claim 4, further comprising: a comparator activated upon receipt of an indication of correct message reconstruction from said dad for determining if said message contains any part of said portable radio system's identification number and producing a corresponding match or mismatch indication; and a controller for varying said determined time of power-down in dependence on said match or mismatch indication.

Claim 8

A portable radio system having improved battery life in standby mode comprising: a receiver for sequentially receiving repeated finite length data messages transmitted as Manchester-coded and frequency-modulated radio signals from a base station; a Manchester code demodulator for processing said received signals to demodulate said Manchester-coded FM and producing corresponding data bit values; a sync detector for processing said bit values to detect a predetermined data bit pattern signifying the beginning of a finite length message and producing a reset signal; a timing control unit for counting demodulated Manchester code symbols that is reset upon receipt of said reset signal; a decoder for further processing said bit values to determine a message and produce an indication if said message has been received error-free; and a power-down timer for reducing the power consumption of any of the above for a determined time after receiving an indication of error-free reception from said decoder; a number of accumulators corresponding to the number of data bits in each message repeat, said accumulators being reset by said reset signal; and a majority-vote circuit for selecting corresponding data bit values demodulated from said message repeats and accumulating said selected data bit values in corresponding accumulators.

Claim 9

A portable radio system having improved battery life in standby mode comprising: a receiver for sequentially receiving repeated finite length data messages transmitted as Manchester-coded and frequency-modulated radio signals from a base station; a Manchester code demodulator for processing said received signals to demodulate said Manchester-coded FM and producing corresponding data bit values; a sync detector for processing said bit values to detect a predetermined data bit pattern signifying the beginning of a finite length message and producing a reset signal; a timing control unit for counting demodulated Manchester code symbols that is reset upon receipt of said reset signal; a decoder for further processing said bit values to determine a message and produce an indication if said message has been received error-free; and a power-down timer for reducing the power consumption of any of the above for a determined time after receiving an indication of error-free reception from said decoder; a number of accumulators corresponding to the number of data bits in each message repeat, said accumulators being reset by said reset signal; and a majority-vote circuit for selecting corresponding data bit values demodulated from said message repeats and accumulating said selected data bit values in corresponding accumulators.

Claim 10

In a radio communication system having at least one base station serving one or more mobile stations, the base station transmitting to the mobile stations a message signal comprising repeated blocks of information bits, each block including a number of data bits and a number of check bits whose value depends on said data bits, a method for conserving battery power in at least one mobile station comprising the steps of: receiving at the mobile station said message signal; decoding at the mobile station each repeated block of information bits contained in said message signal and generating a positive indication when said check bits are consistent with said data bits; de-energizing selected circuits within said mobile station as soon as at least one decoded repeated block results in said positive indication; and re-energizing said selected circuits such that the mobile station is prepared to receive the next message signal.

Claim 11

In a radio communication system having at least one base station serving one or more mobile stations, the base station transmitting to the mobile stations a message signal comprising repeated blocks of information bits, each block including a number of data bits and a number of check bits whose value depends on said data bits, a method for conserving battery power in at least one mobile station comprising the steps of: receiving at the mobile station said message signal; decoding at the mobile station each repeated block of information bits contained in said message signal and generating a positive indication when said check bits are consistent with said data bits; de-energizing selected circuits within said mobile station as soon as at least one decoded repeated block results in said positive indication; and re-energizing said selected circuits such that the mobile station is prepared to receive the next message signal.

Claim 12

The method according to claim 7 in which the check bits are cyclical redundancy bits.

Claim 13

The method according to claim 8 in which the positive indication is a positive cyclical redundancy check.

Claim 14

In a radio communication system having at least one base station serving one or more mobile stations, the base station transmitting to the mobile stations a message signal comprising repeated blocks of information bits, each block including a number of data bits and a number of check bits whose value depends on said dam bits, at least one mobile station comprising: means for receiving at the mobile station said message signal; means for decoding at the mobile station each repeated block of information bits contained in said message signal and generating a positive indication when said check bits are consistent with said data bits; means for de-energizing selected circuits within said mobile station as soon as at least one decoded repeated block results in said positive indication; and means for re-energizing said selected circuits such that the mobile station is prepared to receive the next message signal.

Claim 15

In a radio communication system having at least one base station serving one or more mobile stations, the base station transmitting to the mobile stations a message signal comprising repeated blocks of information bits, each block including a number of data bits and a number of check bits whose value depends on said dam bits, at least one mobile station comprising: means for receiving at the mobile station said message signal; means for decoding at the mobile station each repeated block of information bits contained in said message signal and generating a positive indication when said check bits are consistent with said data bits; means for de-energizing selected circuits within said mobile station as soon as at least one decoded repeated block results in said positive indication; and means for re-energizing said selected circuits such that the mobile station is prepared to receive the next message signal.

Claim 16

The method according to claim 10 in which the check bits are cyclical redundancy bits.

Claim 17

The method according to claim 11 in which the positive indication is a positive cyclical redundancy check.