METHOD AND A SYSTEM FOR CONTROLLING A SLEEP MODE OF A DEVICE IN A WIRELESS COMMUNICATIONS NETWORK OR IN A MOBILE POINT-TO-POINT CONNECTION

• US 20090164821A1
• Filed: 10/10/2006
• Published: 06/25/2009
• Est. Priority Date: 10/28/2005
• Status: Abandoned Application

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Drescher, Wolfram
• Application Number:
  US12/091,072
• Publication Number:
  US 20090164821A1
• Time in Patent Office: Days
• US Class Current: 713/323
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: H04W 52/0283 with sequential power up or power down of successive circuit blocks, e.g. switching on the local oscillator before RF or mixer stages
• CPC Class Codes: H04W 74/00 Wireless channel access
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The present invention relates to a method for controlling a sleep mode of a device in a wireless communications network or in a mobile point-to-point connection in order to turn off system components of the device, especially to turn off a medium access control (2) comprising the steps of: receiving a sleep mode information from an application module in a medium access control (2), coupled to an extended physical layer (PHY), especially to a base band (3), transferring the sleep mode information from the medium access control (2) to the base band (3), setting a sleep signal (sleep) of a power management mode (PMMode) to set one of the system components into sleep state, and, additionally, starting a predetermined first delay timer (T1) to delay the setting of the sleep state for one of the system components.

Claims

1. A method for controlling a sleep mode of a device in a wireless communications network or in a mobile point-to-point connection in order to turn off system components of the device, especially to turn off a medium access control comprising the steps of:

receiving a sleep mode information from an application module in a medium access control, coupled to an base band,

transferring the sleep mode information from the medium access control to the base band,

setting a sleep signal of a power management mode to set one of the system components into sleep state, and,

additionally, starting a predetermined first delay timer to delay the setting of the sleep state for one of the system components.

2. The Method of claim 1, wherein the sleep signal starts the predetermined first delay timer.

3. The method of claim 1, wherein, after the expiration of the predetermined first delay timer, a start-sleep signal is generated to set the sleep state of the extended physical layer and to stop a system timer circuit, which synchronized the clock of the medium access control.

4. The method of claim 1, wherein, after the expiration of the predetermined first delay timer, a stop clock signal is generated to stop the clock of the medium access control and a lazy clock is started to hold the medium access control in the sleep state.

5. The method of claim 1, wherein the first delay timer is setting when boot up the device.

6. The method of claim 1, wherein, after the expiration of the predetermined first delay timer, a power down signal is generated to set a radio frequency subsystem, coupled to the base band, into a sleep state.

7. The method of claim 6, wherein a predetermined second delay timer is started to delay the sleep state of the radio frequency subsystem.

8. The method of claim 7, wherein, after the expiration of the predetermined first delay timer, the start-sleep signal starts the predetermined second delay timer.

9. The method of claim 7, wherein, after the expiration of the predetermined second delay timer a sleep gate signal is generated to set the sleep state of the radio frequency subsystem and to stop a front-end PLL, which synchronized the base band PLL of the base band.

10. A system for controlling a sleep mode of a device in a wireless communications network or in a mobile point-to-point connection in order to turn off system components of the device, especially to turn off a medium access control comprising:

a medium access control, which receives a sleep mode information from an application module and is coupled to an base band and transfers the sleep mode information via an first interface to the base band,

the base band, which generates a sleep signal of a power management mode to set one of the system components into sleep state, and,

a predetermined first delay timer to delay the setting of the sleep state for one of the system components.

11. The system of claim 10, wherein, a base band PLL, which synchronized the system clock with the clock signal of the medium access control, is stopped after the expiration of the predetermined first delay timer.

12. The system of claim 10, wherein the clock of the medium access control is stopped and their lazy clock is started after the expiration of the predetermined first delay timer.

13. The system of claim 10, wherein a radio frequency subsystem, coupled to the base band, is set into sleep state after the expiration of the predetermined first delay timer.

14. The system of claim 13, wherein a predetermined second delay timer is started to further delay the sleep state of the radio frequency subsystem.

15. The system of claim 14, wherein a front-end PLL, which synchronized the base band PLL of the base band is stopped after the expiration of the predetermined second delay timer.

16. An extended physical layer for use in a wireless communications network or in a mobile point-to-point connection, being capable of receiving sleep signals to turn off system components of a device from a medium access control during a working mode, and setting a sleep signal of a power management mode to set one of the system components into sleep state and, additionally, starting a predetermined first delay time to delay the setting of the sleep state for the relevant system component.