JPH09331288A - Intermittent reception system and mobile communication station - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently utilize electric power at a mobile communication station by recording the incoming call history of the station in each time band in each day and automatically changing the period of intermittent reception between the station and a fixed station in accordance with the frequency of the past incoming calls in each time band. SOLUTION: A history updating section 2 updates incoming cell history in each time zone and an intermittently receiving period deciding section 4 decides an intermittently receiving period based on the information recorded in a memory 3 by means of the section 2. An internal timer 6 performs intermittent reception based on the period decided by the section 4. At a mobile station, the receiving frequency of incoming calls in each three-hour time zone set by dividing one day by eight is first recorded. At the moment the first day in which the recording is first made changes to the next day, the schedule of imtermittently receiving periods in the next data is decided and, in the next day, intermittent reception is made based on the schedule. Therefore, electric power can be utilized efficiently at the mobile station.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discontinuous reception system on the side of a mobile communication station in mobile communication or the like, and more particularly to a discontinuous reception system using past incoming call history and a mobile communication station equipped with the system. .

[0002]

2. Description of the Related Art A mobile communication station in mobile communication, etc.
Battery operation or operation is indispensable to secure mobility, which is the most important feature. Further, in order to secure a longer operation time, it is necessary to adopt a receiving method that suppresses power consumption, and in order to satisfy such a demand, an intermittent receiving method is adopted in the current mobile communication and the like.

In the conventional intermittent reception method on the side of a mobile communication station in mobile communication or the like, the monitoring control unit monitors the incoming call at the mobile communication station, and when the incoming call quantity becomes small, an intermittent reception cycle extension signal is sent. When the number of incoming calls increases, a cancellation signal is transmitted to adjust the intermittent reception cycle, or the like.
As described in Japanese Patent No. 96529, the intermittent reception cycle is adjusted depending on the time zone during which there are many incoming calls and the time zone during which there are few incoming calls.

[0004]

However, in the above-mentioned conventional intermittent reception method on the mobile communication station side in the mobile communication or the like, immediately after the number of incoming calls at the mobile communication station increases temporarily. There is a problem that it is not effective for the occurrence of bursty incoming calls, which is customary by individuals such that the number of incoming calls decreases.

Further, in the above-mentioned conventional intermittent reception system on the mobile communication station side in the mobile communication or the like, as described in the above-mentioned Japanese Patent Laid-Open No. 4-96529, there are many incoming and outgoing times. Even if the intermittent reception cycle is adjusted depending on the band, there is a problem that it is not possible to appropriately reflect the daily incoming call tendency of each individual because the time period and the frequency of incoming calls differ for each individual.

Therefore, the present invention has been made in view of the above-mentioned problems, and provides a discontinuous reception system and a mobile communication station which are capable of improving the conventional discontinuous reception system and ensuring a longer operation time. The purpose is to do.

[0007]

In order to achieve the above object, the present invention provides a mobile communication network comprising one or a plurality of fixed communication stations and a plurality of mobile communication stations. The incoming call history is recorded for each time zone of the day, and the intermittent reception cycle between the fixed communication station and the mobile communication station is automatically determined according to the frequency of incoming calls in each time zone. A discontinuous reception method characterized by changing to.

Further, according to the present invention, in a mobile communication station which performs intermittent reception with one or a plurality of fixed communication stations, a receiving section for receiving an incoming call and a history updating section for updating an incoming call history in each time zone. A history recording unit for recording an incoming call history, an intermittent reception cycle determination unit that determines the intermittent reception cycle based on the information recorded in the history recording unit by the history update unit, and the intermittent reception cycle determination unit. A mobile unit comprising: a transmission unit that transmits the determined cycle to the fixed communication station; an internal timer that performs intermittent reception based on the cycle determined by the intermittent reception cycle determination unit; and an intermittent reception execution unit. Provide a body communication station.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings.

Referring to FIG. 1, in the best mode for carrying out the invention, a mobile communication station which performs intermittent reception with one or a plurality of fixed communication stations receives an incoming call.
And a history update unit 2 that updates the incoming call history in each time zone
A history recording unit 3 for recording an incoming call history, an intermittent reception cycle determination unit 4 for determining an intermittent reception cycle based on information recorded in the history recording unit 3 by the history update unit 2, and an intermittent reception cycle determination It includes a transmitting unit 5 that notifies the fixed communication station of the cycle determined by the unit 4, an internal timer 6 that performs intermittent reception based on the cycle determined by the intermittent reception cycle determination unit 4, and an intermittent reception execution unit 7.

The control signal transmitted from the fixed communication station to the mobile communication station is a basic frame (BFR).
And superframe (SFR (= BFR × l: l =
Integer)), the value of this integer l is determined by the past incoming call history on the mobile communication station side. As a result, the intermittent reception cycle can be continuously adjusted for each individual from a time zone in which the call volume is large to a time zone in which the call volume is small.

That is, the time zone and frequency at which each individual receives an incoming call is regarded as the tendency of each individual on a daily basis, and the intermittent reception cycle is determined based on the past incoming call history at the judgment of each mobile communication station. The battery of the mobile communication station is saved by performing intermittent reception by using the above method.

As a method of recording the incoming call history of each individual, when the mobile communication station receives an incoming call, each time the mobile communication station receives an incoming call, the mobile communication station side records the time zone and the number of incoming calls. Then, the record is updated using the frequency of incoming calls in the same time period up to the previous day, and saved as data for creating the intermittent reception cycle on the next day. In this way, when the data of the day is created, the information is notified to the fixed communication station side, and the fixed communication station side knows the intermittent reception cycle of the next day. It is possible to match the timing of intermittent reception between the communication station and the fixed communication station.

The intermittent reception cycle at this time is adjusted by adjusting the value of the integer l of the superframe (SFR).
The timing can be changed. Further, since each mobile communication station stores only the incoming call history updated by each in the memory, the schedule of the intermittent reception cycle of the next day can be easily created only by reading the record.

In the above-described embodiment, the intermittent reception cycle is determined based on the judgment of each mobile communication station based on the past incoming call history. However, in another embodiment, for example, fixed communication is performed. The operation mode of each mobile communication station (vehicle type such as automobile, portable / portable type, ship type, etc.) and past incoming call history of each mobile communication station are recorded at the station, and the day ends. Sometimes, the intermittent reception cycle at each mobile communication station may be determined based on the recorded information.

[0016]

EXAMPLES Examples of the present invention will now be described with reference to the drawings in order to describe the above-described embodiments of the present invention more specifically.

FIG. 1 is a block diagram showing a configuration of a part related to intermittent reception of a mobile communication station in an embodiment of the present invention.

Referring to FIG. 1, the part related to the intermittent reception of the mobile communication station is for receiving the incoming call, the history updating part 2 for updating the incoming call history in each time zone, and for recording the incoming call history. Memory as a history recording unit, an intermittent reception cycle determining unit 4 that determines an intermittent reception cycle based on information recorded in the memory 3 by the history updating unit 2, and a cycle determined by the intermittent reception cycle determining unit 4. Is transmitted to the fixed communication station, an internal timer 6 that performs intermittent reception based on the cycle determined by the intermittent reception cycle determination section 4 and an intermittent reception execution section 7, and the mobile communication station receives an incoming call. When the call is received, the time zone and the incoming call frequency are calculated, the average value for each time zone is calculated based on the data of past incoming call history that has already been recorded, and the record is updated. Schedule of reception cycle Convey Le to the fixed communication station.

Next, the operation of the embodiment of the present invention will be described.

FIG. 2 is a diagram schematically showing a control signal transmitted from a fixed communication station to a mobile communication station in an embodiment of the present invention.

As shown in FIG. 2, in a mobile communication network composed of one or a plurality of fixed communication stations and a plurality of mobile communication stations, a basic frame (from the fixed communication station to the mobile communication station A control signal composed of a BFR) and a superframe (SFR (= BFR × l: l = integer)) is transmitted.

Each mobile communication station having the configuration shown in FIG. 1 has an integer l of the superframe (SFR) shown in FIG.
The following technique is used to determine the value of.

First, as shown in FIG. 3, in a time zone of a day divided into three-hour units, which time zone and how often the incoming call is received are recorded.

The first day of recording is the first day,
At the moment when the date changes, the schedule of the intermittent reception cycle of the next day is determined, and the intermittent reception is performed on the next day based on the determined new cycle schedule.

The next day after the date has changed is set as the second day, and the frequency of incoming calls is recorded for each time zone on the second day as well as on the first day. Updates the record as the average value each time. As a method of calculating the average value, for example, a method of dividing the incoming call frequency for each certain time zone by the number of days can be adopted. At the end of the second day, the schedule of the intermittent reception cycle of the next day, that is, the third day is determined based on the data updated on that day. In this way, the above operation is repeated every time the number of days is updated. FIG. 4 shows a specific example in the case where the average value of the incoming call frequency is calculated sequentially from the first day.

FIG. 5 is a flow chart for explaining an incoming call history update process for intermittent reception in a mobile communication station in one embodiment of the present invention.

Referring to FIGS. 4 and 5, each time the mobile communication station receives a call (step 501), the mobile communication station increases (increments) the number of calls received in the corresponding time zone by "1" (step 502). .

After repeating the processing of steps 501 and 502 for a certain time zone, when the time zone shifts to the next time zone (step 503), the time zone before the transition is
The number of incoming calls during the same time period until that day is averaged (step 504).

After recording this average value in a predetermined area of the memory (step 505), the system waits until the next incoming call (step 506). When the next incoming call is received, it is determined whether the date has changed. (Step 507) until the date is changed, that is, until the record is updated for all time zones of the day, the above steps 502 to 50 are performed.
The process of 7 is repeated.

On the other hand, when it is determined in step 507 that the date has changed, the schedule of the intermittent reception cycle of the next day is determined and the fixed communication station side is also notified of the information (step 508) On the next day after the date has changed, intermittent reception is performed between the fixed communication station and the mobile communication station based on the determined new cycle.

FIG. 6 is a diagram showing a specific example of determining the schedule of the intermittent reception cycle in step 508, and allocates the intermittent reception cycle on the 31st day based on the update data on the 30th day. An example of the case is shown.

Referring to FIG. 6, first, an upper limit value lmax and a lower limit value lmin of an integer l that defines the length of a superframe (SFR) are determined, and then lmin <l <lma.
Within the range of x, the length of the superframe (SFR) is determined by selecting a value of l that matches the average value of the number of incoming calls in a certain time period and reduces the operating rate of the mobile communication station. . Here, "decrease the operating rate" means that when the interval of the waiting state for a normal incoming call is "1", the waiting state for the incoming call is proportional to the reciprocal multiple of the average value of the incoming calls in a certain time period ( It means to lengthen the period of (intermittent reception). If the average value is larger than a certain value, the intermittent reception cycle 1 is set to lm.
In, and if the average value is smaller than a certain value, the intermittent reception cycle 1 is set to lmax.

That is, when the above relationship is expressed as a mathematical expression, the following expressions (1) to (3) are obtained. l (t) = k · (1 / m (t)) (a <m (t) <b) (1) = lmin (m (t) <a) (2) = lmax (m (t) > B)… (3)

In the above equations (1) to (3), t is a time zone number, k is a proportional constant, m (t) is an average value of the number of incoming calls in each time zone, and a is m (t). Lower limit of b
Represents the upper limit of m (t).

As described above, if the value of the integer l is controlled based on the above equations (1) to (3) to determine the intermittent reception cycle for each time zone, the past incoming call history is effectively used. You can set a schedule.

[0036]

As described above, according to the present invention,
In the intermittent reception on the mobile communication station side in mobile communication, the intermittent reception cycle is automatically changed according to the incoming call frequency, so that the power on the mobile communication station side can be efficiently used.

Further, according to the present invention, since a relatively simple method (algorithm) for determining the schedule of the intermittent reception cycle can be adopted, it is extremely easy to actually carry out the present invention. It also has the advantage that the system can be constructed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a part related to discontinuous reception of a mobile communication station in an embodiment of the present invention.

FIG. 2 is a diagram schematically showing a control signal transmitted from a fixed communication station to a mobile communication station in an embodiment of the present invention.

FIG. 3 is a diagram showing an example in which a day is divided into a plurality of time zones in an embodiment of the present invention.

FIG. 4 is a diagram showing a specific example of a case where an average value of incoming call frequencies is calculated sequentially from the first day in an embodiment of the present invention.

FIG. 5 is a flowchart illustrating an incoming call history update process for intermittent reception in a mobile communication station according to an embodiment of the present invention.

FIG. 6 is a diagram showing a specific example of the case of determining the schedule of the intermittent reception cycle in the embodiment of the present invention.

[Explanation of symbols]

 1 receiving unit 2 history updating unit 3 memory (history recording unit) 4 intermittent reception cycle determining unit 5 transmitting unit 6 internal timer 7 intermittent reception executing unit

Claims (2)

[Claims] 1. In a mobile communication network composed of one or more fixed communication stations and a plurality of mobile communication stations, an incoming call history at the mobile communication station is recorded for each time period of one day. An intermittent reception system characterized in that the intermittent reception cycle between a fixed communication station and a mobile communication station is automatically changed according to the frequency of incoming calls in each time zone. 2. A mobile communication station that performs intermittent reception with one or a plurality of fixed communication stations, a receiving unit that receives an incoming call, a history update unit that updates the incoming call history in each time zone, and an incoming call history. A history recording unit for recording, an intermittent reception cycle determination unit that determines the intermittent reception cycle based on the information recorded in the history recording unit by the history update unit, and a cycle determined by the intermittent reception cycle determination unit A mobile communication station, comprising: a transmitting unit that transmits the fixed communication station to the fixed communication station; and an internal timer and an intermittent reception executing unit that perform intermittent reception based on the cycle determined by the intermittent reception cycle determination unit.