KR101087693B1 - Method for Switching from Normal Operation Mode to Sleep Mode for Use in Portable Internet - Google Patents

Abstract

The present invention relates to a method of switching from a normal execution mode to a sleep mode in a portable Internet.

The present invention determines whether to use the power saving function (Portable Internet or WiBro: Wireless Broadband Internet), and when it is determined that the need to use the power saving function sleeps the normal operation mode (Normal Operation Mode) In a personal subscriber station (PSS: hereinafter referred to as a 'PSS') for switching to a sleep mode, a time setting program for setting a check time for checking whether an external power source is connected or the external power source Is connected to the normal execution mode when it is determined that it is not necessary to use the power saving function, and when it is determined that it is necessary to use the power saving function using its own battery, a mode for switching the normal execution mode to the sleep mode A program memory for storing a state conversion program; A key input unit including a plurality of key buttons for setting the check time; An LCD display unit displaying an operation state of the PSS and displaying a process of setting the check time; A power supply unit connected to a vehicle handsfree or charger to supply the external power to the PSS; And setting the check time using the time setting program according to a user's key input, and determining that it is not necessary to use the power saving function by connecting the external power using the mode state conversion program. The microprocessor may be configured to provide a microprocessor for controlling the switching from the normal execution mode to the sleep mode when it is determined that it is necessary to use the power saving function using the self battery.

According to the present invention, the portable Internet determines whether to use the power saving function of the PSS, and when it is determined that the power saving function needs to be used, the normal execution mode is switched to the sleep mode, so that the data between the RAS and the PSS according to the battery state of the PSS. By carrying out the transmission efficiently, it is possible to shorten the data reception time and prevent waste of resources due to radio transmission and reception.

Normal Run Mode, Sleep Mode, Power Saving Function, External Power

Description

Method for Switching from Normal Operation Mode to Sleep Mode for Use in Portable Internet}

1 is a view showing the state of the PSS according to the state of the power saving function region in the RAS,

2 is a flowchart illustrating a process of performing a power saving function in a portable Internet system;

3 is a block diagram illustrating a schematic configuration of a personal subscriber station inside a personal subscriber station that switches from a normal execution mode to a sleep mode in a portable Internet according to a preferred embodiment of the present invention;

4 is a flowchart illustrating a process of switching a PSS from a normal execution mode to a sleep mode in a portable Internet according to a preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110: first power saving function area 120: second power saving function area

130: listening window 140: sleep window

302: program memory 304: key input unit

306: LCD display 308: power supply

310: microprocessor 312: digital signal processing unit

314: baseband converter 316: RF signal processor

318: RF antenna

The present invention relates to a method for switching from a normal operation mode to a sleep mode in a portable Internet or a wireless broadband Internet (WiBro). More specifically, when a personal subscriber station (PSS) (hereinafter referred to as a 'PSS') checks an external state and determines that it is connected to a vehicle hands-free or connected to an external power source, it is not necessary to use a power saving function. The present invention relates to a method for switching from a normal execution mode to a sleep mode and a PSS using the same in a portable Internet which switches to a sleep mode when it is determined that it is necessary to use a power saving function using its own battery.

The mobile communication system has been developed through the first generation analog AMPS (Advanced Mobile Phone System) method and the second generation cellular (Cellular) / Personal Communication Service (PCS) method. The third generation mobile communication system IMT-2000 (International Mobile Telecommunication 2000), which is enacted as a standard in ITU-R, is commercially available. IMT-2000 is a CDMA 2000 1X, 3X, EV-DO, Wide Band CDMA (WCDMA), etc. IS-95A, IS-95B network using IS-95C network evolved from existing IS-95A, IS-95B network It is a service that can provide wireless Internet at a transmission speed of up to 144 Kbps, which is much faster than 14.4 Kbps or 56 Kbps, which is supported by. In particular, by using IMT-2000 service, it is possible to provide various multimedia services (AOD, VOD, etc.) at a faster speed as well as improving existing voice and wireless broadcasting service (WBS) service quality.

However, the existing mobile communication system has a limitation in providing high-speed wireless Internet due to high base station construction cost and high usage fee of the wireless Internet, and a small screen size of the mobile communication terminal. (Wireless Local Area Network) technology has limitations in providing wireless services due to problems such as radio wave interference and narrow coverage. Accordingly, a portable Internet system that can use a high-speed wireless Internet service at a low rate while moving has emerged.

The portable internet system uses various types of portable terminals such as laptops, PDAs, and handheld PCs to access various types of information and contents by accessing the Internet in indoor and outdoor stationary environments and in mobile environments at walking speeds and low to medium speeds. It is a service. In addition, IP-based wireless data system that provides mobility of 60 km / h per hour, provides downlink transmission speed of 24 Mbps, and can provide downlink transmission speed of 50 Mbps by applying Multiple Input Multiple Output (MIMO) system. to be.

In addition, the portable Internet system uses a 2.3 GHz frequency band, draws a time division duplex (TDD) by a duplex method, and uses multiple access to effectively use the allocated frequency spectrum. Orthogonal Frequency Division Multiple Access (OFDMA) is used as a scheme.

On the other hand, considering the mobility of the PSS, the power consumption of the PSS becomes one of the very important design elements. Therefore, efficient PSS management should be performed to enter the sleep mode when the PSS is needed to perform a power saving function and to return to the normal execution mode when needed. The sleep mode is a preprocessing period in which the PSS lacks a service from a radio access station (RAS). During this time, the PSS cannot be serviced by the RAS with Down Link Traffic or Up Link Traffic. Sleep mode minimizes PSS power usage and reduces resource waste due to service with RAS. Execution of sleep mode is optional for PSS and mandatory for RAS.

FIG. 1 is a diagram illustrating a state of a PSS according to a state of a power saving class in a RAS.

Referring to FIG. 1, the RAS includes a first power saving function region 110 including a connection between an NRT-VR and a BE, and a second power saving function region 120 including a connection between a UGS. In detail, the power saving function regions 110 and 120 repeat active and inactive operations, which are performed by the sleep window 140 and the listening window associated with the power saving function regions 110 and 120. (130) means the start. If the sleep window 140 of the first power saving function region 110 and the sleep window 140 of the second power saving function region 120 do not overlap, the PSS transmits and receives a radio wave from the RAS and the first power saving function region 110. If the sleep window 140 of the second power saving function region 120 overlaps with the sleep window 140, the PSS does not transmit or receive radio waves from the RAS. Power loss due to performance can be reduced.

2 is a flowchart illustrating a process of performing a power saving function in a portable Internet system.

Referring to FIG. 2, the PSS transmits a sleep mode request message (MOB_SLP-REQ) to the RAS (S210).

The PSS receives a sleep mode response message (MOB_SLP-RSP) from the RAS (S220). The sleep mode request message in step S210 and the sleep mode response message in step S220 include a start frame value M at which the PSS can stay in a sleep mode, a minimum frame value N1 of a sleep interval, and a maximum frame value. And a Listening Interval (L1) that wakes up in N2 and sleep mode and receives a signal from the RAS again.

The PSS receives a traffic indication message (MOB_TRF-IND) for notifying whether traffic to be transmitted from the RAS to the PSS has appeared at the end of the sleep interval of the PSS (S230). Here, the traffic indication message notifies that no traffic appears, and since the traffic does not appear, the PSS receives a signal from the RAS during the listening period L1, and when the listening period L1 ends, the sleep period is twice as long as before. Stretch further to enter sleep mode.

The PSS receives the traffic indication message from the RAS (S240). Here, the traffic indication message notifies that the traffic has appeared, and since the traffic has appeared, the PSS receives a signal from the RAS during the listening period L1 and enters a normal execution mode.

However, when the PSS is connected to the vehicle hands-free or connected to an external power source, even though the external power is supplied, the PSS not only wastes battery power by operating in normal execution mode but also wastes RAS resources through continuous transmission and reception with the RAS. There is a problem.

In order to solve the above problems, the present invention, a personal subscriber station (PSS: referred to as "PSS") is required to check the external state connected to the vehicle hands-free or connected to an external power source to use the power saving function If it is determined that there is no, it operates in the normal execution mode, and when it is determined that the power saving function needs to be used using its own battery, the method for switching from the normal execution mode to the sleep mode and the PSS using the The purpose is to provide.

Therefore, according to the first object of the present invention, it is determined whether to use the power saving function (Portable Internet or WiBro: Wireless Broadband Internet) in the mobile Internet, and if it is determined that it is necessary to use the power saving function is performed normally In a personal subscriber station (PSS: hereinafter referred to as a 'PSS') for switching a normal operation mode to a sleep mode, a check time for checking whether an external power source is connected is set. The time setting program, when the external power is connected to determine that it is not necessary to use the power saving function operates in the normal execution mode, and when it is determined that it is necessary to use the power saving function using its own battery normal operation mode A program memory for storing a mode state conversion program for switching the sleep mode to the sleep mode; A key input unit including a plurality of key buttons for setting the check time; An LCD display unit displaying an operation state of the PSS and displaying a process of setting the check time; A power supply unit connected to a vehicle handsfree or charger to supply the external power to the PSS; And setting the check time using the time setting program according to a user's key input, and determining that it is not necessary to use the power saving function by connecting the external power using the mode state conversion program. The microprocessor may be configured to provide a microprocessor for controlling the switching from the normal execution mode to the sleep mode when it is determined that it is necessary to use the power saving function using the self battery.

According to the second object of the present invention, when it is determined that it is not necessary to use the time setting program for setting the check time and the power saving function, the device operates in the normal execution mode, and when it is determined that it is necessary to use the power saving function, the normal execution mode. A program memory for storing a mode state conversion program for converting the device to the sleep mode, a key input unit including a plurality of key buttons for setting the check time, an LCD display for displaying a process for setting the check time, and an external device When the check time is set using a power supply unit for supplying power and the time setting program, and it is determined that it is not necessary to use the power saving function using the mode state conversion program, the normal operation mode is operated and the power saving is performed. If you decide you need to use the feature A method of switching a normal execution mode to a sleep mode in a personal subscriber station including a microprocessor for controlling the normal execution mode to be switched to the sleep mode, the method comprising: (a) checking a state in which the external power source is connected; Setting a check time; determining whether to use the power saving function by using the mode state conversion program stored in the program memory; (c) operating in the normal execution mode when it is determined in step (b) that the external power source is connected and does not need to use the power saving function; (d) switching the normal execution mode to the sleep mode when it is determined in step (b) that the power saving function needs to be used using its own battery; And (e) operating in the sleep mode according to the setting in step (d).

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 3 is a diagram of a personal subscriber station (PSS), which switches from a normal operation mode to a sleep mode in a portable Internet according to a preferred embodiment of the present invention. Fig. 1 is a block diagram showing the schematic configuration.

PSS according to a preferred embodiment of the present invention is a program memory 302, key input unit 304, LCD display unit 306, power supply unit 308, microprocessor 310, digital signal processing unit 312, baseband conversion The unit 314, the RF signal processor 316, the RF antenna 318, and the like.

The program memory 302 is a time setting program for setting a check time for checking a state of being connected to a vehicle hands-free or an external power source according to a key input from a user, and an external power source is connected to provide a power saving function. When it is determined that there is no need to use it, it operates in the normal execution mode, and when it is determined that it is necessary to use the power saving function using its own battery, the mode state conversion program for switching to the sleep mode is stored.

The key input unit 304 is provided with a plurality of key buttons including key buttons for setting the check time.

The LCD display unit 306 displays the operation state of the PSS 300 including the state of use of the battery, the reception intensity of radio waves, the date, the time, and the like. In addition, the LCD display unit 306 displays a process of setting the check time.

The power supply unit 308 is connected to a vehicle handsfree or a charger to supply external power to the PSS 300.

The microprocessor 310 sets a check time using a time setting program according to a user's key input, and in the normal execution mode when it is determined that external power is connected and does not need to use a power saving function using a mode conversion program. In operation, when it is determined that it is necessary to use the power saving function using its own battery, the control unit switches to the sleep mode. In addition, the microprocessor 310 according to a preferred embodiment of the present invention checks the state whether the PSS 300 is connected to the vehicle hands-free or the external power source for each set check time in the state of operating in normal mode, the mode When the external power is connected using the state conversion program and determines that it is not necessary to use the power saving function, it operates in the normal execution mode. .

The digital signal processor 312 is a digital signal processing processor that codes or decodes a data packet and performs a function as an equalizer to remove multipath noise.

The baseband converter 314 converts a signal transmitted / received between the RF signal processor 316 and the digital signal processor 312 into a signal of a baseband band, and includes a digital-to-analog conversion (DAC) and an analog signal. Perform functions such as Analog to Digital Conversion (ADC). In addition, the baseband converter 314 transmits the transmission data (TXIQ) to the RF signal processor 316, and controls the power (POWER) of the RF signal processor 316 or automatically controls its gain (AGC). ). The RF signal processor 316 receives the received signal RXIQ.

The RF signal processor 316 demodulates and amplifies the RF signal received from the RF antenna 128, modulates a transmission signal applied from the baseband converter 314, and transmits the modulated signal to the radio wave space through the RF antenna 318. .

4 is a flowchart illustrating a process of switching a PSS from a normal execution mode to a sleep mode in a portable Internet according to a preferred embodiment of the present invention.

Referring to FIG. 4, the PSS 300 sets a check time for checking a state of being connected to hands-free or an external power source according to a key input from a user (S410). Here, the PSS 300 is assumed to be in a normal execution mode.

The PSS 300 determines whether to use the power saving function by using the mode state conversion program (S420).

The PSS 300 operates in the normal execution mode when it is determined in step S420 that the external power source is connected and does not need to use the power saving function (S422).

The PSS 300 determines whether the check time set by the user has been reached (S421).

The PSS 300 continues to operate in the normal execution mode when the check time has not been reached in step S421, and returns to step S420 when it reaches the check time in step S421 to determine whether to use the power saving function.

If it is determined in step S420 that the power saving function needs to be used using its own battery, the PSS 300 switches the normal execution mode to the sleep mode (S430).

The PSS 300 operates in the sleep mode according to the setting in step S430 (S440).

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, the portable Internet determines whether to use the power saving function of the PSS, and when it is determined that the power saving function needs to be used, the normal execution mode is switched to the sleep mode, thereby depending on the battery state of the PSS. By efficiently performing data transfer between RAS and PSS, it is possible to reduce data reception time and prevent waste of resources due to radio transmission and reception.

Claims (5)

When determining whether to use the power saving function in the portable Internet or the wireless broadband Internet (WiBro) and determining that it is necessary to use the power saving function, the normal operation mode is set to sleep mode. In the Personal Subscriber Station (PSS: hereinafter referred to as 'PSS'), A time setting program for setting a check time for checking whether an external power source is connected; when it is determined that the external power source is connected and does not need to use the power saving function, the device operates in the normal execution mode and uses the battery A program memory for storing a mode state conversion program for switching the normal execution mode to the sleep mode when it is determined that it is necessary to use a power saving function; A key input unit including a plurality of key buttons for setting the check time; An LCD display unit displaying an operation state of the PSS and displaying a process of setting the check time; A power supply unit connected to a vehicle handsfree or charger to supply the external power to the PSS; And In the normal execution mode, when the check time is set using the time setting program according to a user's key input, and the external power is connected using the mode state conversion program, it is not necessary to use the power saving function. And a microprocessor that controls to switch the normal execution mode to the sleep mode when it is determined that the power saving function needs to be used using the own battery. Personal subscriber station for switching from the normal performing mode to the sleep mode in the mobile Internet comprising a. The method of claim 1, The microprocessor checks whether the external power is connected at every check time set in a state in which the PSS is operating in a normal execution mode, and uses the power saving function by connecting the external power using the mode state conversion program. The mobile Internet is operated in the normal execution mode when it is determined that there is no need, and the control unit is configured to switch the normal execution mode to the sleep mode when it is determined that it is necessary to use the power saving function using the battery. Personal subscriber station to switch from the normal execution mode to the sleep mode. A time setting program for setting a check time, and when it is determined that it is not necessary to use the power saving function, it operates in a normal execution mode, and when it is determined that it is necessary to use the power saving function, a mode state conversion for switching the normal execution mode to a sleep mode A program memory for storing a program, a key input unit including a plurality of key buttons for setting the check time, an LCD display for displaying a process for setting the check time, a power supply for supplying external power, and the time setting When the check time is set using a program and it is determined that it is not necessary to use the power saving function using the mode state conversion program, the operation is performed in the normal execution mode and when it is determined that it is necessary to use the power saving function. Normal slip mode In at individual subscriber terminal including a microprocessor for controlling to switch draw on how to switch between the normal execution mode to the sleep mode, (a) setting the check time for checking a state in which the external power source is connected; determining whether to use the power saving function by using the mode state conversion program stored in the program memory; (c) operating in the normal execution mode when it is determined in step (b) that the external power source is connected and does not need to use the power saving function; (d) switching the normal execution mode to the sleep mode when it is determined in step (b) that the power saving function needs to be used using its own battery; And (e) operating in the sleep mode according to the setting in step (d) The method for switching the personal subscriber station from the normal execution mode to the sleep mode in the mobile Internet comprising a. The method of claim 3, wherein Between the step (c) and the step (d), (c1) determining whether the check time set by the user has been reached; And (c2) continuing to operate in the normal execution mode if the check time has not been reached in step (c1); The method for switching the personal subscriber station from the normal execution mode to the sleep mode in the mobile Internet, characterized in that further comprises. The method of claim 4, wherein After step (c2) above, (c3) if the check time is reached in step (c1), returning to step (b) and determining whether to use the power saving function The method for switching the personal subscriber station from the normal execution mode to the sleep mode in the mobile Internet, characterized in that further comprises.

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