US6480476B1 — Variable sleep mode for mobile stations in a mobi…

Claim 1

Independent Claim 145 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes a volume of data per unit time transmitted to or from the mobile station so that for a higher volume, the variable wake up parameter is varied to increase the frequency at which the mobile station wakes up, or for a lower volume, the variable wake up parameter value is varied to decrease the frequency at which the mobile station wakes up.

Claim 2

Dependent Claim 145 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes a volume of data per unit time transmitted to or from the mobile station so that for a higher volume, the variable wake up parameter is varied to increase the frequency at which the mobile station wakes up, or for a lower volume, the variable wake up parameter value is varied to decrease the frequency at which the mobile station wakes up.

Claim 3

Dependent Claim 27 words

The method in claim 1 , further comprising: providing the mobile station's variable wake up parameter to the network to permit coordinated communications with the mobile station.

Claim 4

Dependent Claim 47 words

The method in claim 1 , wherein the wake up parameter is calculated in accordance with the following: S=2 n , where S is the duration of a variable sleep cycle when the mobile station is in the lower power mode and n is a variable integer.

Claim 5

Dependent Claim 36 words

The method in claim 3 , wherein the base station and mobile station communicate using a communications channel divided into a repeating sequence of M frames, and where n=0, 1, 2, . . . , M.

Claim 6

Dependent Claim 35 words

The method in claim 4 , further comprising: determining wake up frames (W) when the mobile station enters the higher power mode in accordance with the following: W=(kS) modulo M, where k is an integer.

Claim 7

Dependent Claim 50 words

The method in claim 4 , further comprising: determining wake up frames (W) when the mobile station enters the higher power mode in accordance with the following: W=(F+kS) modulo M, where F is a frame number of the communications channel selected based on an identifier associated with the mobile station.

Claim 8

Dependent Claim 100 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; waking up at the established times; further comprising: detecting a change in one or more conditions; and varying the value of the variable wake up parameter in response to the change.

Claim 9

Dependent Claim 100 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; waking up at the established times; further comprising: detecting a change in one or more conditions; and varying the value of the variable wake up parameter in response to the change.

Claim 10

Dependent Claim 35 words

The method in claim 7 , wherein the mobile station may operate at plural activity levels and wherein the detected change includes the mobile station operating at a different one of the plural activity levels.

Claim 11

Dependent Claim 21 words

The method in claim 8 , wherein the plural activity levels correspond to different procedures used to locate the mobile station.

Claim 12

Dependent Claim 35 words

The method in claim 8 , wherein the detected change includes the mobile initiating a change in the one or more conditions while the mobile station is operating in only one of the activity levels.

Claim 13

Dependent Claim 150 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes a service currently requested or subscribed by the mobile station so that for a current service requiring a lower delay, the variable wake up parameter value is varied to increase the frequency at which the mobile station wakes up, or for a current service permitting a higher delay, the variable wake up parameter value is varied to increase the frequency at which the mobile station wakes up.

Claim 14

Dependent Claim 150 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes a service currently requested or subscribed by the mobile station so that for a current service requiring a lower delay, the variable wake up parameter value is varied to increase the frequency at which the mobile station wakes up, or for a current service permitting a higher delay, the variable wake up parameter value is varied to increase the frequency at which the mobile station wakes up.

Claim 15

Dependent Claim 113 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the service includes a maximum delay parameter and the value of the variable wake up parameter is varied to decrease the frequency at which the mobile station wakes up to without exceeding the maximum delay parameter.

Claim 16

Dependent Claim 113 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the service includes a maximum delay parameter and the value of the variable wake up parameter is varied to decrease the frequency at which the mobile station wakes up to without exceeding the maximum delay parameter.

Claim 17

Dependent Claim 142 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes a delay input from a user of the mobile station so that for a lower delay, the variable wake up parameter value is varied to increase the frequency at which the mobile station wakes up, or for a higher delay, the variable wake up parameter value is varied to decrease the frequency at which the mobile station wakes up.

Claim 18

Dependent Claim 142 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes a delay input from a user of the mobile station so that for a lower delay, the variable wake up parameter value is varied to increase the frequency at which the mobile station wakes up, or for a higher delay, the variable wake up parameter value is varied to decrease the frequency at which the mobile station wakes up.

Claim 19

Dependent Claim 144 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes a power savings input from a user of the mobile station so that for greater power savings, the variable wake up parameter value is varied to decrease the frequency at which the mobile station wakes up, or for decreased call setup delay, the variable wake up parameter value is varied to increase the frequency at which the mobile station wakes up.

Claim 20

Dependent Claim 144 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes a power savings input from a user of the mobile station so that for greater power savings, the variable wake up parameter value is varied to decrease the frequency at which the mobile station wakes up, or for decreased call setup delay, the variable wake up parameter value is varied to increase the frequency at which the mobile station wakes up.

Claim 21

Dependent Claim 136 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes the type of power source currently powering the mobile station so that for a power source having a shorter life, the variable wake up cycle parameter is varied to increase the cycle, or for a power source having a longer life, the variable wake up cycle parameter is varied to decrease the cycle.

Claim 22

Dependent Claim 136 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected one or more conditions, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes the type of power source currently powering the mobile station so that for a power source having a shorter life, the variable wake up cycle parameter is varied to increase the cycle, or for a power source having a longer life, the variable wake up cycle parameter is varied to decrease the cycle.

Claim 23

Dependent Claim 124 words

In a radio communications system having plural battery-operated mobile stations capable of communicating with one or more core networks using a radio access network, where one of the mobile stations may operate at plural activity levels, a method comprising: storing a corresponding variable sleep cycle parameter value for the one mobile station for each activity level; determining a current activity level of the one mobile station; determining a first time interval when the one mobile station will awaken from a lower power sleep mode of operation to a higher power mode of operation using the variable sleep cycle parameter value corresponding to the detected activity level; and sending a message to the one mobile station on the communications channel during the first time interval.

Claim 24

Dependent Claim 124 words

In a radio communications system having plural battery-operated mobile stations capable of communicating with one or more core networks using a radio access network, where one of the mobile stations may operate at plural activity levels, a method comprising: storing a corresponding variable sleep cycle parameter value for the one mobile station for each activity level; determining a current activity level of the one mobile station; determining a first time interval when the one mobile station will awaken from a lower power sleep mode of operation to a higher power mode of operation using the variable sleep cycle parameter value corresponding to the detected activity level; and sending a message to the one mobile station on the communications channel during the first time interval.

Claim 25

Dependent Claim 51 words

The method in claim 16 , wherein when the one mobile station changes to a new activity level, the method further comprises: determining a second time interval when the one mobile station will awaken from a sleep cycle using the variable sleep cycle parameter value corresponding to the new activity level.

Claim 26

Dependent Claim 64 words

The method in claim 16 , wherein when the one mobile station is in the current activity level, the method further comprising: changing the variable sleep cycle parameter value corresponding to the current activity level to a changed value, and determining a second time interval when the one mobile station will awaken from a sleep cycle using the changed variable sleep cycle parameter value.

Claim 27

Dependent Claim 17 words

The method in claim 18 , wherein the mobile station changes the variable sleep cycle parameter value.

Claim 28

Dependent Claim 58 words

The method in claim 16 , wherein for a higher current activity, the variable wake up cycle parameter value is varied to increase the frequency at which the mobile station wakes up, or for a lower current activity, the variable wake up cycle parameter value is varied to decrease the frequency at which the mobile station wakes up.

Claim 29

Dependent Claim 34 words

The method in claim 16 , further comprising: detecting a decrease in current activity level when the time since a last data transmission exceeds a threshold, and increasing the variable sleep cycle parameter value.

Claim 30

Dependent Claim 30 words

The method in claim 21 , wherein after the increasing step the method further comprises: when data is transmitted, resetting the variable sleep cycle parameter value to a default value.

Claim 31

Dependent Claim 86 words

The method in claim 16 , wherein the plural activity levels correspond to different procedures used to locate the mobile station, the plural activity levels including a first activity level where a user is registered at a base station cell known to the radio access network, a second activity level where a user is registered in a smaller group of base station cells known by the radio access network, and a third larger group of base station cells known by the one or more core networks.

Claim 32

Dependent Claim 18 words

The method in claim 16 , wherein the determining and sending steps are performed by radio access network.

Claim 33

Independent Claim 93 words

A method for a radio communications system having plural battery-operated mobile stations capable of communicating with a core network using a radio access network, comprising: determining a service currently requested or subscribed by the mobile station, and wherein for a current service requiring a lower delay, varying the variable wake up cycle parameter value to increase the frequency at which the mobile station wakes up, or for a current service permitting a higher delay, varying the variable wake up cycle parameter value to decrease the frequency at which the mobile station wakes up.

Claim 34

Independent Claim 93 words

A method for a radio communications system having plural battery-operated mobile stations capable of communicating with a core network using a radio access network, comprising: determining a service currently requested or subscribed by the mobile station, and wherein for a current service requiring a lower delay, varying the variable wake up cycle parameter value to increase the frequency at which the mobile station wakes up, or for a current service permitting a higher delay, varying the variable wake up cycle parameter value to decrease the frequency at which the mobile station wakes up.

Claim 35

Dependent Claim 44 words

The method in claim 25 , wherein the service includes a maximum delay parameter and the value of the variable wake up cycle parameter is varied to decrease the frequency at which the mobile station wakes up to without exceeding the maximum delay parameter.

Claim 36

Dependent Claim 69 words

The method in claim 25 , further comprising: detecting a delay input from a user of the mobile station, wherein for a lower delay, the variable wake up cycle parameter value is varied to increase the frequency at which the mobile station wakes up, or for a higher delay, the variable wake up cycle parameter value is varied to decrease the frequency at which the mobile station wakes up.

Claim 37

Dependent Claim 71 words

The method in claim 25 , further comprising: detecting a power savings input from a user of the mobile station, wherein for greater power savings, the variable wake up cycle parameter value is varied to decrease the frequency at which the mobile station wakes up, or for decreased call setup delay, the variable wake up cycle parameter value is varied to increase the frequency at which the mobile station wakes up.

Claim 38

Dependent Claim 61 words

The method in claim 25 , further comprising: detecting a type of power source currently powering the mobile station, wherein for a power source having a shorter life, the variable wake up cycle parameter is varied to increase the cycle, or for a power source having a longer life, the variable wake up cycle parameter is varied to decrease the cycle.

Claim 39

Dependent Claim 48 words

The method in claim 25 , wherein the wake up cycle parameter is calculated in accordance with the following: S=2 n , where S is the duration of a variable sleep cycle when the mobile station is in the lower power mode and n is a variable integer.

Claim 40

Dependent Claim 36 words

The method in claim 30 , wherein the communications channel includes a series of repeating frames and the first time interval corresponds to one the frames, and where n=0, 1, 2, . . . , M.

Claim 41

Dependent Claim 35 words

The method in claim 31 , further comprising: determining wake up frames (W) when the mobile station enters the higher power mode in accordance with the following: W=(kS) modulo M, where k is an integer.

Claim 42

Dependent Claim 50 words

The method in claim 31 , further comprising: determining wake up frames (W) when the mobile station enters the higher power mode in accordance with the following: W=(F+kS) modulo M, where F is a frame number of the communications channel selected based on an identifier associated with the mobile station.

Claim 43

Dependent Claim 122 words

In a radio communications system having plural battery-operated mobile stations capable of communicating with first and second core networks, a method comprising: storing a first variable sleep parameter value for one of the mobile stations at the first core network and a second variable sleep parameter value for the one mobile station at the second core network; determining a time interval when the one mobile station will awaken from a lower power sleep mode of operation to a higher power mode of operation taking into account one or both of the first and second variable sleep parameter values; and sending a message to the one mobile station on a communications channel from one of the core networks during the first time interval.

Claim 44

Dependent Claim 122 words

In a radio communications system having plural battery-operated mobile stations capable of communicating with first and second core networks, a method comprising: storing a first variable sleep parameter value for one of the mobile stations at the first core network and a second variable sleep parameter value for the one mobile station at the second core network; determining a time interval when the one mobile station will awaken from a lower power sleep mode of operation to a higher power mode of operation taking into account one or both of the first and second variable sleep parameter values; and sending a message to the one mobile station on a communications channel from one of the core networks during the first time interval.

Claim 45

Dependent Claim 44 words

The method in claim 34 , wherein storing step includes storing a mobile station identifier for the one mobile station and the corresponding one of the first and second variable sleep parameter values for the one mobile station at both of the core networks.

Claim 46

Dependent Claim 33 words

The method in claim 35 , further comprising: storing at the one mobile station the one mobile station identifier and the first and second variable sleep parameter values for the one mobile station.

Claim 47

Dependent Claim 46 words

The method in claim 34 , wherein the first and second variable sleep parameter values are selected so that a first time interval determined for the first variable sleep parameter value and a second time interval determined for the second variable sleep parameter value are synchronized.

Claim 48

Dependent Claim 20 words

The method in claim 37 , wherein the first and second time intervals are defined as a power of 2.

Claim 49

Dependent Claim 95 words

The method in claim 37 , wherein the first and second time intervals are calculated in accordance with the following: S 1 =2 n1 , where S 1 is the first time interval when the one mobile station is in the lower power mode and n 1 is an integer corresponding to the first variable sleep parameter, and S 2 =2 n2 , where S 2 is the second time interval when the one mobile station is in the lower power mode and n 2 is an integer corresponding to the second variable sleep parameter.

Claim 50

Dependent Claim 40 words

The method in claim 39 , wherein the communications channel includes a series of repeating M frames, and where n 1 =0, 1, 2, . . . , M and n 2 =0, 1, 2, . . . , M.

Claim 51

Dependent Claim 61 words

The method in claim 40 , further comprising: determining wake up frames (W) when the mobile station enters the higher power mode in accordance with the following: W=(k 2 n1 ) modulo M, where k is an integer, if n 1 ≦n 2 , or W=(k 2 n2 )modulo M, where k is an integer, if n 2 <n 1 .

Claim 52

Dependent Claim 75 words

The method in claim 40 , further comprising: determining wake up frames (W) when the mobile station enters the higher power mode in accordance with the following: W=(F+k 2 n1 ) modulo M, where k is an integer, if n 1 ≦n 2 , and F is a frame number of the communications channel selected based on an identifier associated with the mobile station, and W=(F+k 2 n2 ) if n 2 <n 1 .

Claim 53

Independent Claim 95 words

A method of operating a battery-powered mobile radio that communicates over a communications channel in which messages are communicated in a series of M repeating frames, comprising: determining a variable sleep cycle S when the mobile radio is in a lower power consumption mode, where S=2 n and n is an integer who value is variably determined by the mobile radio, and determining a wake up time W when the mobile radio leaves the lower power consumption sleep cycle and enters a higher power awake mode, where W=(kS) modulo M and k is an integer.

Claim 54

Independent Claim 95 words

A method of operating a battery-powered mobile radio that communicates over a communications channel in which messages are communicated in a series of M repeating frames, comprising: determining a variable sleep cycle S when the mobile radio is in a lower power consumption mode, where S=2 n and n is an integer who value is variably determined by the mobile radio, and determining a wake up time W when the mobile radio leaves the lower power consumption sleep cycle and enters a higher power awake mode, where W=(kS) modulo M and k is an integer.

Claim 55

Dependent Claim 37 words

The method in claim 43 , wherein W is determined further in accordance with W=(F+kS) modulo M, where F is a frame number of the communications channel selected based on an identifier associated with the mobile station.

Claim 56

Dependent Claim 28 words

The method in claim 43 , further comprising: providing the mobile station's variable sleep mode parameter n to the network to permit coordinated communications with the mobile station.

Claim 57

Dependent Claim 32 words

The method in claim 43 , further comprising: detecting a change in one or more conditions, and varying the value of the variable sleep mode parameter n in response to the change.

Claim 58

Dependent Claim 87 words

The method in claim 43 , further comprising: determining the value of the variable sleep mode parameter n in accordance with one or more of the following: a volume of data per unit time transmitted to or from the mobile station, an activity level of the mobile station, a procedure used to locate the mobile station, a type of radio channel associated with operation of the mobile station, a service currently requested or subscribed by the mobile station, and a power input associated with the mobile station.

Claim 59

Dependent Claim 90 words

A battery-operated mobile station, comprising: transceiving circuitry for transmitting and receiving data; a detector for detecting one or more conditions relating to the mobile station's operation; and a sleep cycle controller for determining a variable wake up cycle parameter used to establish a cycle when the mobile station automatically leaves a lower power mode and enters a higher power mode based on the detected one or more conditions, wherein the sleep cycle controller is configured to operate the transceiving circuitry in accordance with the determined variable wake up cycle parameter.

Claim 60

Dependent Claim 90 words

A battery-operated mobile station, comprising: transceiving circuitry for transmitting and receiving data; a detector for detecting one or more conditions relating to the mobile station's operation; and a sleep cycle controller for determining a variable wake up cycle parameter used to establish a cycle when the mobile station automatically leaves a lower power mode and enters a higher power mode based on the detected one or more conditions, wherein the sleep cycle controller is configured to operate the transceiving circuitry in accordance with the determined variable wake up cycle parameter.

Claim 61

Dependent Claim 39 words

The battery-operated mobile station in claim 48 , wherein the detector is configured to detect a change in one or more conditions and varies the value of the variable wake up cycle parameter in response to the detected change.

Claim 62

Dependent Claim 34 words

The battery-operated mobile station in claim 48 , wherein the detector is a data activity detector is configured to detect a current level of data being transmitted from or received by the mobile station.

Claim 63

Dependent Claim 46 words

The battery-operated mobile station in claim 48 , wherein the mobile station may operate at plural activity levels, and wherein the detected change includes the mobile station changing from operation at one of the plural activity levels to operation at another of the plural activity levels.

Claim 64

Dependent Claim 23 words

The battery-operated mobile station in claim 51 , wherein different procedures used to locate the mobile station for each of the activity levels.

Claim 65

Dependent Claim 39 words

The battery-operated mobile station in claim 51 , wherein the detected change includes the sleep cycle controller initiates a change in the one or more conditions while the mobile station is operating in only one of the activity levels.

Claim 66

Dependent Claim 82 words

The battery-operated mobile station in claim 48 , wherein the one or more conditions includes a current activity level of the mobile station so that for a higher current activity, the sleep cycle controller varies the variable wake up cycle parameter value to increase the frequency at which the mobile station wakes up, or for a lower current activity, the sleep cycle controller varies the variable wake up cycle parameter value to decrease the frequency at which the mobile station wakes up.

Claim 67

Dependent Claim 90 words

The battery-operated mobile station in claim 48 , wherein the one or more conditions includes a service currently requested or subscribed by the mobile station so that for a current service requiring a lower delay, the sleep cycle controller varies the variable wake up cycle parameter value to increase the frequency at which the mobile station wakes up, or for a current service permitting a higher delay, the sleep cycle controller varies the variable wake up cycle parameter value to decrease the frequency at which the mobile station wakes up.

Claim 68

Dependent Claim 46 words

The battery-operated mobile station in claim 48 , wherein the service includes a maximum delay parameter and the value of the variable wake up cycle parameter is varied to decrease the frequency at which the mobile station wakes up to without exceeding the maximum delay parameter.

Claim 69

Dependent Claim 82 words

The battery-operated mobile station in claim 48 , wherein the one or more conditions includes a delay input from a user of the mobile station so that for a lower delay, the sleep cycle controller varies the variable wake up cycle parameter value to increase the frequency at which the mobile station wakes up, and for a higher delay, the sleep cycle controller varies the variable wake up cycle parameter value to decrease the frequency at which the mobile station wakes up.

Claim 70

Dependent Claim 84 words

The battery-operated mobile station in claim 48 , wherein the one or more conditions includes a power savings input from a user of the mobile station so that for greater power savings, the sleep cycle controller varies the variable wake up cycle parameter value to decrease the frequency at which the mobile station wakes up, or for decreased call setup delay, the sleep cycle controller varies the variable wake up cycle parameter value to increase the frequency at which the mobile station wakes up.

Claim 71

Dependent Claim 74 words

The battery-operated mobile station in claim 48 , wherein the one or more conditions includes the type of power source currently powering the mobile station so that for a power source having a shorter life, the sleep cycle controller varies the variable wake up cycle parameter to increase the cycle, and for a power source having a longer life, the sleep cycle controller varies the variable wake up cycle parameter to decrease the cycle.

Claim 72

Dependent Claim 52 words

The battery-operated mobile station in claim 48 , wherein the sleep cycle controller calculates wake up cycle parameter in accordance with the following: S=2 n , where S is the duration of a variable sleep cycle when the mobile station is in the lower power mode and n is a variable integer.

Claim 73

Dependent Claim 38 words

The battery-operated mobile station in claim 60 , wherein the mobile station communicates with a network using a communications channel divided into a repeating sequence of M frames, and where n=0, 1, 2, . . . , M.

Claim 74

Dependent Claim 15 words

The battery-operated mobile station in claim 61 , wherein n is a power of 2.

Claim 75

Dependent Claim 39 words

The battery-operated mobile station in claim 61 , the sleep cycle controller determining wake up frames (W) when the mobile station enters the higher power mode in accordance with the following: W=(kS) modulo M, where k is an integer.

Claim 76

Dependent Claim 52 words

The battery-operated mobile station in claim 61 , further comprising: determining wake up frames (W) when the mobile station enters the higher power mode in accordance with the following: W=(F+kS) modulo M, where F is a frame number of the communications channel selected based on an identifier associated with the mobile station.

Claim 77

Dependent Claim 107 words

Apparatus for communicating over a communications channel in which messages are communicated in a series of M repeating frames, comprising: circuitry for transmitting and receiving data, and a sleep cycle controller configured to determine a variable sleep cycle S when the mobile radio is to operate in a lower power consumption mode, where S=2 n and a variable sleep mode parameter n is an integer whose value is variably determined, and to determine a wake up time W when the mobile radio leaves the lower power consumption sleep cycle and to operate in a higher power awake mode, where W=(kS) modulo M, and k is an integer.

Claim 78

Dependent Claim 107 words

Apparatus for communicating over a communications channel in which messages are communicated in a series of M repeating frames, comprising: circuitry for transmitting and receiving data, and a sleep cycle controller configured to determine a variable sleep cycle S when the mobile radio is to operate in a lower power consumption mode, where S=2 n and a variable sleep mode parameter n is an integer whose value is variably determined, and to determine a wake up time W when the mobile radio leaves the lower power consumption sleep cycle and to operate in a higher power awake mode, where W=(kS) modulo M, and k is an integer.

Claim 79

Dependent Claim 37 words

The apparatus in claim 65 , wherein W is determined further in accordance with W=(F+kS) modulo M, where F is a frame number of the communications channel selected based on an identifier associated with the mobile station.

Claim 80

Dependent Claim 43 words

The apparatus in claim 65 , further comprising: a detector configured to detect a change in one or more conditions, wherein the sleep cycle controller is configured to vary the value of the variable sleep mode parameter n in response to the change.

Claim 81

Dependent Claim 95 words

The apparatus in claim 65 , further comprising: wherein the sleep cycle controller is configured to determine the value of the variable sleep mode parameter n in accordance with one or more of the following: a volume of data per unit time transmitted to or from the mobile station, an activity level of the mobile station, a procedure used to locate the mobile station, a type of radio channel associated with operation of the mobile station, a service currently requested or subscribed by the mobile station, and a power input associated with the mobile station.

Claim 82

Dependent Claim 106 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected condition, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes one of different procedures used to locate the mobile stations or one of different types of radio channels associated with the operation of the mobile station.

Claim 83

Dependent Claim 106 words

In a cellular telecommunications system in which a battery-powered mobile station communicates with a network, a method of operating the mobile station comprising: detecting one or more conditions relating to the mobile station's operation; based on the detected condition, determining a variable wake up parameter value used to establish times when the mobile station automatically leaves a lower power mode and enters a higher power mode; and waking up at the established times, wherein the one or more conditions includes one of different procedures used to locate the mobile stations or one of different types of radio channels associated with the operation of the mobile station.

Claim 84

Dependent Claim 129 words

In a radio communications system having plural battery-operated mobile stations capable of communicating with one or more core networks using a radio access network and operating at plural activity levels, a method performed by the radio access network comprising: determining a service currently requested or subscribed by a mobile station; storing a corresponding variable sleep cycle parameter value for the mobile station for each activity level; determining a current activity level of the mobile station; determining a time interval when the mobile station will awaken from a lower power sleep mode of operation to a higher power mode of operation using the variable sleep cycle parameter value corresponding to the detected activity level; and sending a message to the mobile station on the communications channel during the time interval.

Claim 85

Dependent Claim 129 words

In a radio communications system having plural battery-operated mobile stations capable of communicating with one or more core networks using a radio access network and operating at plural activity levels, a method performed by the radio access network comprising: determining a service currently requested or subscribed by a mobile station; storing a corresponding variable sleep cycle parameter value for the mobile station for each activity level; determining a current activity level of the mobile station; determining a time interval when the mobile station will awaken from a lower power sleep mode of operation to a higher power mode of operation using the variable sleep cycle parameter value corresponding to the detected activity level; and sending a message to the mobile station on the communications channel during the time interval.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2005-11-11	2006-05-13	2006-11-12	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2009-11-11	2010-05-13	2010-11-12	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2013-11-11	2014-05-13	2014-11-12	$7700.00	Window Closed / Lapsed

Variable sleep mode for mobile stations in a mobile communications

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