1. A network system, comprising:
a gateway coupled with a wired network; and
at least two base stations coupled with the gateway over the wired network to communicate information between the gateway and each of the at least two base stations, the at least two base stations providing a wireless access method, wherein the gateway is configured to:
calculate, for each of the at least two base stations, a delay in information transmission between the gateway and each of the at least two base stations;
choose a maximum delay from among the calculated delays of each of the at least two base stations;
calculate, for each of the at least two base stations, a difference between the chosen maximum delay and the delay of each of the at least two base stations; and
notify each of the at least two base stations of the calculated delay difference of each of the at least two base stations.
2. The network system according to claim 1, further comprising a subscriber station which can be coupled through the wireless access method, wherein each of the at least two base stations is configured to:
communicate with the gateway through multicast route; and
transmit the information communicated through the multicast route and received from the gateway to the subscriber station with a delay determined based on the notified delay difference.
3. The network system according to claim 1, wherein:
the gateway transmits to each of the at least two base stations a first control packet including a time of transmission at which the first control packet is transmitted from the gateway;
each of the at least two base stations transmits, upon reception of the first control packet, a second control packet to the gateway, the second control packet including the time of transmission which is included in the first control packet and a time of reception at which the first control packet is received by each of the at least two base stations; and
the gateway calculates, upon reception of the second control packet, a difference between the time of reception and the time of transmission which are included in the second control packet, to thereby calculate a delay in information transmission between the gateway and each of the at least two base stations.
4. The network system according to claim 3, wherein the gateway transmits the first control packet to each of the at least two base stations through multicast route.
5. The network system according to claim 3, wherein the gateway transmits the first control packet to each of the at least two base stations through unicast route.
6. The network system according to claim 1, wherein:
each of the at least two base stations transmits to the gateway a control packet including a time of transmission at which the control packet is transmitted from each of the at least two base stations; and
the gateway calculates, upon reception of the control packet, a difference between the time of transmission which is included in the control packet and a time of reception of the control packet, to thereby calculate a delay in information transmission between the gateway and each of the at least two base stations.
7. A control method of controlling information transmission timing among at least two base stations in a network system including a gateway coupled with a wired network and the at least two base stations coupled with the gateway over the wired network to communicate information between the gateway and each of the at least two base stations, the at least two base stations providing a wireless access method, the control method comprising:
calculating, by the gateway, for each of the at least two base stations, a delay in information transmission between the gateway and each of the at least two base stations;
choosing, by the gateway, a maximum delay from among the calculated delays of each of the at least two base stations;
calculating, by the gateway, for each of the at least two base stations, a difference between the chosen maximum delay and the delay of each of the at least two base stations; and
notifying, by the gateway, each of the at least two base stations of the calculated delay difference of each of the at least two base stations.
8. The control method according to claim 7, wherein:
the network system further comprises a subscriber station which can be coupled through the wireless access method; and
the control method further comprises:
communicating, between each of the at least two base stations and the gateway through multicast route; and
transmitting, by each of the at least two base stations, the information communicated through the multicast route and received from the gateway to the subscriber station with a delay determined based on the notified delay difference.
9. The control method according to claim 7, further comprising:
transmitting, by the gateway, to each of the at least two base stations a first control packet including a time of transmission at which the first control packet is transmitted from the gateway;
transmitting, by each of the at least two base stations, upon reception of the first control packet, a second control packet to the gateway, the second control packet including the time of transmission which is included in the first control packet and a time of reception at which the first control packet is received by each of the at least two base stations; and
calculating, by the gateway, upon reception of the second control packet, a difference between the time of reception and the time of transmission which are included in the second control packet, to thereby calculate a delay in information transmission between the gateway and each of the at least two base stations.
10. The control method according to claim 9, further comprising transmitting, by the gateway, the first control packet, transferred through multicast route, to each of the at least two base stations.
11. The control method according to claim 9, further comprising transmitting, by the gateway, the first control packet, transferred through unicast route, to each of the at least two base stations.
12. The control method according to claim 7, further comprising:
transmitting, by each of the at least two base stations, to the gateway a control packet including a time of transmission at which the control packet is transmitted from each of the at least two base stations; and
calculating, by the gateway, upon reception of the control packet, a difference between the time of transmission which is included in the control packet and a time of reception of the control packet, to thereby calculate a delay in information transmission between the gateway and each of the at least two base stations.
13. A gateway that is coupled over a wired network with at least two base stations for providing a wireless access method and communicates with the at least two base stations, comprising:
a processor which performs computing;
a memory coupled with the processor; and
a network interface coupled with the wired network, wherein the processor is configured to:
calculate, for each of the at least two base stations, a delay in information transmission between the gateway and each of the at least two base stations;
choose a maximum delay from among the calculated delays of each of the at least two base stations;
calculate, for each of the at least two base stations, a difference between the chosen maximum delay and the delay of each of the at least two base stations; and
notify each of the at least two base stations of the calculated delay difference of each of the at least two base stations.
14. The gateway according to claim 13, wherein the processor is configured to:
transmit to each of the at least two base stations a first control packet including a time of transmission at which the first control packet is transmitted from the gateway;
receive from each of the at least two base stations a second control packet including a time of reception at which the first control packet is received by each of the at least two base stations; and
calculate a difference between the time of reception which is included in the second control packet and the time of transmission, thereby calculating a delay in information transmission between the gateway and each of the at least two base stations.
15. The gateway according to claim 14, wherein the processor sends the first control packet, transferred through multicast route, to each of the at least two base stations.
16. The gateway according to claim 14, wherein the processor sends the first control packet, transferred through unicast route, to each of the at least two base stations.
17. The gateway according to claim 13, wherein the processor is configured to:
receive from each of the at least two base stations a control packet including a time of transmission at which the control packet is sent from each of the at least two base stations; and
calculate a difference between the time of transmission which is included in the control packet and a time of reception of the control packet, thereby calculating a delay in information transmission between the gateway and each of the at least two base stations.
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. A method for controlling a dryer comprising the steps of:
sensing an amount of laundry in the dryer;
setting a primary drying time period T1 of the dryer with reference to the amount of laundry sensed thus;
setting a secondary drying time period T2 during drying according to the primary drying time period T1 set thus;
drying the laundry according to the secondary drying time period T2 set thus; and
wherein the step of setting a secondary drying time period T2 includes the step of sensing humidity and temperature of an inside of the dryer for setting the secondary drying time period T2
wherein the secondary drying time period T2 is set in proportion to a time point T3 and the time point T3 is formed at which the voltage values measured with the humidity sensor and the temperature sensor at the dryer are the same.
2. The method as claimed in claim 1, wherein the step of sensing an amount of laundry in the dryer includes the step of sensing the amount of laundry with a humidity sensor at the dryer.
3. The method as claimed in claim 2, wherein the amount of the laundry is sensed with reference to frequency of contact of a drying object in the dryer with the humidity sensor.
4. The method as claimed in claim 1, wherein the secondary drying time period T2 is calculated with a linear function of the time period T3 in which the voltage values measured with the humidity sensor and the temperature sensor at the dryer are the same.
5. The method as claimed in claim 1, further comprising the step of displaying the primary drying time period in succession to the step of setting a primary drying time period T1.
6. The method as claimed in claim 5, further comprising the step of changing the primary drying time period to the secondary drying time period and displaying the secondary time period.