1. A reception apparatus comprising:
a receiver that receives signals; and
a processor configured to execute a programmed procedure including,
a path detection process performing path detection on a selected user equipment;
a deriving process using a detected path timing to despread incoming signals from said selected user equipment and deriving one or more multipath components;
a providing process Rake combining said one or more multipath components to provide a demodulation signal;
a measuring process measuring an elapsed time from a previous path detection of each of a plurality of user equipment; and
a scheduling process selecting one or more user equipment at predetermined intervals according to one or more predetermined judgment criteria then reporting to said path detection process;
wherein said one or more predetermined judgment criteria comprise criteria for selecting the user equipment with a demodulation signal which has a higher fading frequency, and wherein
said one or more predetermined judgment criteria further includes criteria for selecting the user equipment having a longer said elapsed time.
2. The reception apparatus according to claim 1 wherein said one or more predetermined judgment criteria includes criteria for selecting the user equipment having a greater Doppler frequency shift.
3. The reception apparatus according to claim 1 wherein said one or more predetermined judgment criteria includes criteria for selecting the user equipment having a greater variation in reception quality of an incoming signal.
4. The reception apparatus according to claim 1 wherein said one or more predetermined judgment criteria includes criteria for selecting the user equipment having a greater shift from a desired value in reception quality of an incoming signal.
5. The reception apparatus according to claim 4, wherein said reception quality is expressed as a block error rate.
6. The reception apparatus according to claim 4, wherein said reception quality is expressed as a ratio of desired signal power in a reception signal to undesired signal power.
7. The reception apparatus according to claim 1, wherein said one or more predetermined judgment criteria includes criteria for preferentially selecting a user equipment which is out of synchronization.
8. The reception apparatus according to claim 1, wherein said one or more predetermined judgment criteria includes criteria for preferentially selecting a user equipment which communicates with a predetermined party in the system.
9. The reception apparatus according to claim 1, wherein said one or more predetermined judgment criteria includes criteria for preferentially selecting a user equipment which communicates using audio packets.
10. The reception apparatus according to claim 1, wherein said one or more predetermined judgment criteria includes criteria for preferentially selecting a user equipment which will be used to measure a round trip time (RTT).
11. A path detection apparatus comprising:
a memory; and
a processor that executes a procedure in the memory, the procedure including,
a path detection process performing path detection on selected user equipment;
a deriving process using a detected path timing to despread incoming signals from said selected user equipment and deriving one or more multipath components;
a providing process Rake combining said one or more multipath components to provide a demodulation signal;
a measuring process measuring an elapsed time from a previous path detection of each of a plurality of user equipment; and
a scheduling process selecting one or more user equipment at predetermined intervals according to one or more judgment criteria and reporting to said path detection process; wherein
said one or more judgment criteria further includes criteria for selecting the user equipment based on transmission characteristics of the transmission path, and wherein said one or more judgment criteria further includes criteria for selecting the user equipment based on having a longer said elapsed time.
12. The path detection apparatus of claim 11, wherein said transmission characteristics include the demodulation signal with a higher fading frequency.
13. A method of path detection comprising:
performing path detection on selected user equipment;
despreading incoming signals from said selected user equipment by using a detected path timing, and deriving one or more multipath components;
Rake combining said one or more multipath components, and providing a demodulation signal;
measuring an elapsed time from a previous path detection of each user equipment; and
selecting one or more user equipment at predetermined intervals according to one or more judgment criteria;
said one or more judgment criteria comprising criteria for selecting the user equipment based on transmission characteristics of the transmission path, and wherein said one or more predetermined judgment criteria further includes criteria for selecting the user equipment having a longer said elapsed time.
14. The method of claim 13, wherein said transmission characteristics include the demodulation signal with a higher fading frequency.
15. A non-transitory computer-readable recording medium storing therein a computer program for implementing a method for detecting path timing, said computer program causing a computer to execute:
path detection on selected user equipment;
despreading incoming signals from said selected user equipment by using a detected path timing, and deriving one or more multipath components;
Rake combining said one or more multipath components, and providing a demodulation signal;
measuring an elapsed time from a previous path detection of each user equipment; and
selecting one or more user equipment at predetermined intervals according to one or more judgment criteria;
said one or more judgment criteria including criteria for selecting user equipment having the demodulation signal with a higher fading frequency, and wherein
said one or more predetermined judgment criteria further includes criteria for selecting the user equipment having a longer said elapsed time.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An energy recovery system for converting heat generated during operation of a working device into electrical energy using first and second thermal media and recovering the electrical energy, the system comprising:
a cooling device that cools one of the thermal media, generating a low temperature thermal medium by maintaining the temperature of said one of the thermal media at a predetermined value; and
a thermoelectric converter that generates electricity by utilizing a temperature difference between the low temperature thermal medium and the other one of the thermal media, with said other one of the thermal media being maintained at a temperature higher than the low temperature thermal medium by heat generated during operation of the working device to generate a high temperature thermal medium with said other one of the thermal media,
wherein the cooling device is a heat pump that generates the low temperature thermal medium by utilizing heat from the high temperature thermal medium.
2. The energy recovery system according to claim 1, wherein the heat pump is an adsorption heat pump having a working medium and an adsorbent that is capable of adsorbing and desorbing the working medium, the adsorbent heat pump has a function to desorb the working medium from the adsorbent by using heat from the high temperature thermal medium, a function to liquefy the working medium that has evaporated during the desorption, and a function to evaporate the liquefied working medium by using heat from said one of the thermal media that is used to generate the low temperature thermal medium.
3. The energy recovery system according to claim 2, further comprising a cooling system for cooling and liquefying the working medium that has evaporated during the desorption from the adsorbent.
4. The energy recovery system according to claim 3, wherein the heat pump further has a function to cause the adsorbent to adsorb the working medium that has been evaporated by heat from said one of the thermal media, and wherein the cooling system limits the generation of heat at the adsorbent caused by the adsorption of the working medium.
5. The energy recovery system according to claim 3, wherein the energy recovery system is for use with a refrigerant and an air conditioner having a refrigerant circuit for circulation of the refrigerant, and the cooling system supplies to the heat pump, coolant that has been cooled by the refrigerant circulating in the refrigerant circuit.
6. The energy recovery system according to claim 1, wherein the energy recovery system is for use with an air conditioner and the low temperature thermal medium is used not only for the electricity generation at the thermoelectric converter, but also for assisting air conditioning by the air conditioner.
7. The energy recovery system according to claim 6, further comprising a switching device that switches a course of travel of the low temperature thermal medium, such that the low temperature thermal medium is selectively used for electricity generation at the thermoelectric converter or for assisting the air conditioning by operation of the switching device.
8. The energy recovery system according to claim 5, wherein the working device is for mounting on a vehicle and the air conditioner is mounted on the vehicle.
9. The energy recovery system according to claim 1, wherein the working device is for mounting on a vehicle having a battery, and electricity generated at the thermoelectric converter is used for charging the battery.
10. The energy recovery system according to claim 9, wherein the working device is a power source for the vehicle, and wherein the high temperature thermal medium is coolant that has been used to cool the power source.
11. The energy recovery system according to claim 6, wherein the working device is for mounting on a vehicle and the air conditioner is mounted on the vehicle.