Method for scheduling wake/sleep cycles by a central device in a wireless network
First Claim
1. A method for scheduling power save cycles by a central device in a wireless network comprising a plurality of wireless devices, said method comprising:
- determining a system reference cycle as a minimum value of a delay constraint on a real-time service for each wireless device of said plurality of wireless devices that has a real-time service;
attributing a length of a power save cycle to each wireless device, wherein each power save cycle length is an integer multiple of the system reference cycle and wherein the integer value is varied to form a difference between the power save cycle length for each of the plurality of wireless devices;
assigning a sleep period and a wake period within the power save cycle of each wireless device using the predetermined power save cycle length; and
arranging the power save cycle of each wireless device to avoid collision of the wake period with those of other wireless devices.
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Accused Products
Abstract
Methods and systems for scheduling wake/sleep cycles by a central device in a wireless network that have at least one mobile device include determining a system reference cycle as a minimum value of a delay constraint on a real-time service for each mobile device of the at least one mobile device that has a real-time service. A wake/sleep cycle length is attributed to each mobile device. The wake/sleep cycle length is an integer multiple of the system reference cycle such that a wake/sleep cycle length of a first mobile device is different from that of a second mobile device. A sleep period and a wake period are assigned within the wake/sleep cycle of each mobile device. The wake/sleep cycle of each mobile device is arranged to avoid collision of the wake period with those of other mobile devices.
27 Citations
18 Claims
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1. A method for scheduling power save cycles by a central device in a wireless network comprising a plurality of wireless devices, said method comprising:
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determining a system reference cycle as a minimum value of a delay constraint on a real-time service for each wireless device of said plurality of wireless devices that has a real-time service; attributing a length of a power save cycle to each wireless device, wherein each power save cycle length is an integer multiple of the system reference cycle and wherein the integer value is varied to form a difference between the power save cycle length for each of the plurality of wireless devices; assigning a sleep period and a wake period within the power save cycle of each wireless device using the predetermined power save cycle length; and arranging the power save cycle of each wireless device to avoid collision of the wake period with those of other wireless devices. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for scheduling power save cycles of a wireless device, comprising:
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receiving from a central station scheduling data for a sleep/wake cycle, wherein a sleep/wake cycle length is defined as an integer multiple of a system reference cycle that is common for a plurality of wireless devices and that is set as a minimum value of a delay constraint on real-time service for each wireless device of said plurality of wireless devices that has a real-time service, and wherein the integer value is varied between wireless devices to form a difference between a power save cycle length for each wireless device; and waking and setting to sleep the appropriate circuits as a function of the scheduling data using the predetermined sleep/wake cycle length. - View Dependent Claims (9, 10, 11)
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12. A central device for scheduling power save cycles in a wireless network comprising a plurality of wireless devices, said central device being configured to:
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determine a system reference cycle as a minimum value of a delay constraint on a real-time service for each wireless device of said plurality of wireless devices that has a real-time service; attribute a length of a power save cycle to each wireless device, wherein each power save cycle length is an integer multiple of a system reference cycle and wherein the integer value is varied to form a difference between the power save cycle length for each of the plurality of wireless devices; assign a sleep period and a wake period within the power save cycle of each wireless device using the predetermined power save cycle length; and arrange the power save cycle of each wireless device to avoid collision of the wake period with those of other wireless devices. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification