Method for reducing the power consumption of a mobile station
First Claim
1. A method for reducing the power consumption of a mobile station connected to a packet-switched network, in which packet-switched network information is transmitted in the form of data frames, the method comprising:
- defining at least two different paging periods, and selecting a paging period for an idle mode in the mobile station on the basis of received signal strength;
sending paging messages essentially at the intervals of said paging period to the mobile station to enable to synchronize the mobile station with the packet-switched network;
setting the mobile station in the standby mode at least for the time of the reception of paging messages, and after the reception of the paging message;
setting the mobile station, which is in the standby mode, to the idle mode, in which idle mode part of the functions of the mobile station are set in one of the following states;
the power saving mode;
switched off,wherein the method further comprises changing the mode of operation of the mobile station from the idle mode to the standby mode according to any of the following alternatives;
at intervals during the paging period to receive information transmitted in the packet-switched network for maintaining synchronization to the packet-switched network;
or at the end of the paging period for resynchronizing the mobile station to the packet-switched network.
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Accused Products
Abstract
The invention relates to a method for reducing the power consumption of a mobile station (2) connected to a packet-switched network (4), in which packet-switched network information is sent in the form of data frames. In the method, a paging period is specified for the mobile station for sending paging messages (UD1) essentially at the intervals of said paging period to the mobile station, the mobile station (2) is set to the standby mode at least for the time of the reception of the paging messages (UD1), and the mobile station, which is in the standby mode, is set to the idle mode after the reception of the paging message (UD1). In the idle mode, some of the functions of the mobile station (2) are set to the power saving mode or switched off. In the method, the mode of operation of the mobile station in the idle mode is changed from the idle mode to the standby mode to receive information transmitted in the packet-switched network either at intervals during the paging period for maintaining synchronization to the packet-switched network, or at the end of the paging period for performing synchronization to the packet-switched network again.
63 Citations
18 Claims
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1. A method for reducing the power consumption of a mobile station connected to a packet-switched network, in which packet-switched network information is transmitted in the form of data frames, the method comprising:
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defining at least two different paging periods, and selecting a paging period for an idle mode in the mobile station on the basis of received signal strength; sending paging messages essentially at the intervals of said paging period to the mobile station to enable to synchronize the mobile station with the packet-switched network; setting the mobile station in the standby mode at least for the time of the reception of paging messages, and after the reception of the paging message; setting the mobile station, which is in the standby mode, to the idle mode, in which idle mode part of the functions of the mobile station are set in one of the following states;
the power saving mode;
switched off,wherein the method further comprises changing the mode of operation of the mobile station from the idle mode to the standby mode according to any of the following alternatives;
at intervals during the paging period to receive information transmitted in the packet-switched network for maintaining synchronization to the packet-switched network;
or at the end of the paging period for resynchronizing the mobile station to the packet-switched network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system, which comprises:
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a packet-switched network, at least one mobile station having a data transfer connection with the packet-switched network, means for sending information in the form of data frames between the mobile station and the packet-switched network, means for defining at least two different paging periods, and selecting a paging period for the idle mode in the mobile station on the basis of received signal strength, whereby paging messages are arranged to be sent essentially at the intervals of said paging period to the mobile station to enable to synchronize the mobile station with the packet-switched network, means for setting the mobile station to the standby mode at least for the time of the reception of the paging messages means for setting the mobile station, which is in the standby mode, to the idle mode after the reception of the paging message, and means for setting some of the functions of a mobile station in the idle mode to one of the following states; the power saving mode, switched off, means for changing the mode of operation of a mobile station, which is in the idle mode, from the idle mode to the standby mode, wherein the means for changing the mode of operation of a mobile station are adapted to change the mode of operation according to any of the following alternatives;
at intervals during the paging period to receive information transmitted in the packet-switched network for maintaining synchronization to the packet-switched network, or at the end of the paging period to receive information transmitted in the packet-switched network for performing a resynchronization to the packet-switched network.- View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A mobile station comprising:
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means for establishing a data transfer connection to the packet-switched network, means for defining at least two different paging periods, and selecting a paging period for an idle mode in the mobile station on the basis of received signal strength; a receiver for receiving paging messages which are sent essentially at the intervals of said paging period from the packet-switched network to the mobile station to enable to synchronize the mobile station with the packet-switched network, means for setting the mobile station to the standby mode at least for the time of the reception of the paging messages, means for setting the mobile station, which is in the standby mode, to the idle mode after the reception of the paging message, and means for setting some of the functions of a mobile station in the idle mode to one of the following states; the power saving mode, switched off, means for changing the mode of operation of a mobile station, which is in the idle mode, from the idle mode to the standby mode, wherein the means for changing the mode of operation of a mobile station are adapted to change the mode of operation according to one of the following alternatives;
at intervals during the paging period to receive information transmitted in the packet-switched network for maintaining synchronization to the packet-switched network when the mobile station is synchronized to the packet-switched network, or at the end of the paging period to receive information transmitted in the packet-switched network for performing synchronization to the packet-switched network again when the mobile station is not synchronized to the packet-switched network.
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Specification