BATTERY LIFETIME EXTENSION FOR WIRELESS DEVICES USING MESSAGE ENERGY PREDICTION
A method for communication includes collecting information relating at least to communication of a wireless device over a wireless communication network. An energy-prediction model, which predicts amounts of energy needed in the wireless device for performing communication operations in the wireless communication network, is maintained based on the collected information. For a communication operation that is to be performed by the wireless device in the wireless communication network, a time at which the communication operation will be performed is scheduled based on the energy-prediction model. The communication operation is performed at the scheduled time.
1 . A method for communication, comprising:
collecting information relating at least to communication of a wireless device over a wireless communication network;
maintaining, based on the collected information, an energy-prediction model that predicts amounts of energy needed in the wireless device for performing communication operations in the wireless communication network;
for a communication operation that is to be performed by the wireless device in the wireless communication network, scheduling, based on the energy-prediction model, a time at which the communication operation will be performed; and
performing the communication operation at the scheduled time.
2 . The method according to claim 1 , wherein performing the communication operations comprises communicating messages over the wireless communication network.
3 . The method according to claim 1 , wherein performing the communication operations comprises scanning for availability of the wireless communication network.
4 . The method according to claim 1 , wherein performing the communication operations comprises waking-up a modem of the wireless device and receiving signal by the modem.
5 . The method according to claim 1 , wherein performing the communication operations comprises setting a modem of the wireless device to a sleep period.
6 . The method according to claim 1 , wherein scheduling the time comprises deciding on the time in accordance with a scheduling policy that aims at least to maximize a lifetime of a battery of the wireless device.
7 . The method according to claim 1 ,
wherein collecting the information comprises collecting information relating to a battery of the wireless device;
wherein maintaining the energy-prediction model comprises predicting, based on the information relating to the battery, an effective energy capacity remaining in the battery following the communication operation; and
wherein scheduling the time depends on the effective energy capacity.
8 . The method according to claim 1 , wherein scheduling the time comprises deciding whether to perform the communication operation in a current time period or to defer a decision on performing the communication operation to a later time period.
9 . The method according to claim 1 ,
wherein collecting the information further comprises collecting additional information relating to communication of one or more additional wireless devices over the wireless communication network; and
wherein maintaining the energy-prediction model is based both on the information relating to the wireless device and on the additional information relating to the additional wireless devices.
10 . The method according to claim 1 , wherein maintaining the energy-prediction model is performed in the wireless device.
11 . The method according to claim 1 , wherein maintaining the energy-prediction model is performed in a server that communicates with the wireless device over the wireless communication network.
12 . The method according to claim 1 , wherein maintaining the energy-prediction model is performed partially in the wireless device and partially in a server that communicates with the wireless device over the wireless communication network.
13 . The method according to claim 1 , wherein collecting the information comprises waking-up a modem of the wireless device, and/or of one or more additional wireless devices, to collect the information in one or more dedicated wake-up periods, which are dedicated for maintaining the energy-prediction model.
14 . The method according to claim 1 , wherein scheduling the time based on the energy-prediction model comprises:
receiving a total energy budget that should not be exceeded in communicating the message; and
scheduling the time so as to meet the total energy budget.
15 . The method according to claim 1 , and comprising sharing at least part of the collected information, or preprocessed information that is derived from the collected information, with an operator of the wireless communication network.
16 . The method according to claim 1 , and comprising reporting, based on the collected information, an anomality or a statistical information regarding the battery.
17 . A communication apparatus, comprising:
a wireless device configured to communicate over a wireless communication network, the wireless device comprising a modem and a battery; and
one or more processors, configured to:
collect information relating at least to communication of the wireless device over the wireless communication network;
maintain, based on the collected information, an energy-prediction model that predicts amounts of energy needed in the wireless device for performing communication operations in the wireless communication network;
for a communication operation that is to be performed by the wireless device in the wireless communication network, schedule, based on the energy-prediction model, a time at which the communication operation will be performed.
18 .- 32 . (canceled)