Mobile communication system, mobile communication method, mobile terminal and base station
First Claim
1. A mobile communication system for carrying out packet transmission/reception between a mobile terminal and a radio base station, comprising:
- a power saving unit for executing a power saving mode to reduce a power consumption at the mobile terminal;
a packet classification judgement unit for judging a packet type of a packet;
a sleep timer setting unit for setting a sleep timer value indicating a time duration since a last packet is transmitted/received until the power saving mode starts, according to a judgement result of the packet classification judgement unit;
at least one sleep timer for measuring an elapsed time since the packet is transmitted/received; and
a sleep execution unit for activating the sleep timer after the packet is transmitted/received, and controlling the power saving unit to execute the power saving mode at a timing at which the elapsed time measured by the at least one sleep timer exceeded the sleep timer value, whereinthe at least one sleep timer includes a plurality of sleep timers such that when another packet of the packet type different from that of the packet is received during a measurement of the elapsed time for the packet, another sleep timer is activated to carry out a measurement of the elapsed time for the another packet; and
the sleep execution unit controls the power saving unit to execute the power saving mode when all sleep timers are expired.
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Accused Products
Abstract
In a mobile communication system for carrying out packet transmission/reception between a mobile terminal having a power saving mode to reduce a power consumption and a radio base station, a packet type of a packet is judged, and a sleep timer value indicating a time duration since a last packet is transmitted/received until the power saving mode starts is set according to a judgement result. Then, at least one sleep timer for measuring an elapsed time since the packet is transmitted/received is activated, and the mobile terminal is controlled to execute the power saving mode at a timing at which the elapsed time measured by the at least one sleep timer exceeded the sleep timer value.
31 Citations
16 Claims
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1. A mobile communication system for carrying out packet transmission/reception between a mobile terminal and a radio base station, comprising:
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a power saving unit for executing a power saving mode to reduce a power consumption at the mobile terminal; a packet classification judgement unit for judging a packet type of a packet; a sleep timer setting unit for setting a sleep timer value indicating a time duration since a last packet is transmitted/received until the power saving mode starts, according to a judgement result of the packet classification judgement unit; at least one sleep timer for measuring an elapsed time since the packet is transmitted/received; and a sleep execution unit for activating the sleep timer after the packet is transmitted/received, and controlling the power saving unit to execute the power saving mode at a timing at which the elapsed time measured by the at least one sleep timer exceeded the sleep timer value, wherein the at least one sleep timer includes a plurality of sleep timers such that when another packet of the packet type different from that of the packet is received during a measurement of the elapsed time for the packet, another sleep timer is activated to carry out a measurement of the elapsed time for the another packet; and the sleep execution unit controls the power saving unit to execute the power saving mode when all sleep timers are expired. - View Dependent Claims (2, 3, 4)
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5. A mobile communication method for carrying out packet transmission/reception between a mobile terminal having a power saving mode to reduce a power consumption and a radio base station, comprising the steps of:
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(a) judging a packet type of a packet; (b) setting a sleep timer value indicating a time duration since a last packet is transmitted/received until the power saving mode starts, according to a judgement result of the step (a); (c) activating at least one sleep timer for measuring an elapsed time since the packet is transmitted/received; and (d) controlling the mobile terminal to execute the power saving mode at a timing at which the elapsed time measured by the at least one sleep timer exceeded the sleep timer value, wherein the at least one sleep timer includes a plurality of sleep timers such that when another packet of the packet type different from that of the packet is received during a measurement of the elapsed time for the packet, the step (c) activates another sleep timer to carry out a measurement of the elapsed time for the another packet, and the step (d) controls the mobile terminal to execute the power saving mode when all sleep timers are expired. - View Dependent Claims (6, 7, 8)
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9. A mobile terminal device for carrying out packet transmission/reception with a radio base station, comprising:
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a power saving unit for executing a power saving mode to reduce a power consumption at the mobile terminal device; a packet classification judgement unit for judging a packet type of a packet; a sleep timer setting unit for setting a sleep timer value indicating a time duration since a last packet is transmitted/received until the power saving mode starts, according to a judgement result of the packet classification judgement unit; at least one sleep timer for measuring an elapsed time since the packet is transmitted/received; and a sleep execution unit for activating the sleep timer after the packet is transmitted/received, and controlling the power saving unit to execute the power saving mode at a timing at which the elapsed time measured by the at least one sleep timer exceeded the sleep timer value, wherein the at least one sleep timer includes a plurality of sleep timers such that when another packet of the packet type different from that of the packet is received during a measurement of the elapsed time for the packet, another sleep timer is activated to carry out a measurement of the elapsed time for the another packet, and the sleep execution unit controls the power saving unit to execute the power saving mode when all sleep timers are expired. - View Dependent Claims (10, 11, 12)
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13. A radio base station device for carrying out packet transmission/reception with a mobile terminal having a power saving mode to reduce a power consumption, comprising:
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a packet classification judgement unit for judging a packet type of a packet; a sleep timer setting unit for setting a sleep timer value indicating a time duration since a last packet is transmitted/received until the power saving mode starts, according to a judgement result of the packet classification judgement unit; at least one sleep timer for measuring an elapsed time since the packet is transmitted/received; and a sleep permission signal transmission unit for activating the sleep timer after the packet is transmitted/received, and transmitting a sleep permission signal for controlling the mobile terminal to execute the power saving mode at a timing at which the elapsed time measured by the at least one sleep timer exceeded the sleep timer value, wherein the at least one sleep timer includes a plurality of sleep timers such that when another packet of the packet type different from that of the packet is received during a measurement of the elapsed time for the packet, another sleep timer is activated to carry out a measurement of the elapsed time for the another packet, and the sleep permission signal transmission unit transmits the sleep permission signal when all sleep timers are expired. - View Dependent Claims (14, 15, 16)
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Specification