JPH0937344A - Intermitted reception method for mobile communication and the method for mobile station - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively execute battery saving for a mobile station. SOLUTION: When there is no incoming signal in a i-th group buffer 24i , a base station transmits a premonitory signal 31 at incoming signal transmitting timing. A mobile station 10i belonging to the i-th group receiving the signal 31 aborts intermittent reception only by frequency indicated by the signal 31 or previously determined frequency, e.g. once in this case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile station discontinuous reception method for reducing power consumption of a mobile station in a standby state.

[0002]

2. Description of the Related Art A mobile station 10 has a control unit 1 as shown in FIG.
1, a transmitter 12, and a receiver 13, and energization is performed during communication and while waiting for an incoming signal, as shown in FIG. That is, all the units 11, 12, and 13 are energized during communication, and the control unit 11 always needs to be energized during standby, but the receiving unit 13 in standby does not always need to be energized, and intermittent reception is performed. Is being done. That is, in this intermittent reception, the receiving unit 13 of the mobile station is not always energized for reception, but intermittent reception is performed by energizing the reception section 13 of the mobile station at certain intervals in time to reduce the power consumption of the mobile station. This is a method of realizing battery saving.

A concrete conventional discontinuous reception method is shown in FIG.
Set all mobile stations (PS) to the last 1 digit of the mobile station number.
Based on the mobile station number, such as making certain calculations using numbers
Divided into a plurality of groups, # 1 group, # 2 group ... #X group.
Then, as shown in FIG. 11A, from the network side, the wireless base station (CS)
Incoming signal 22 sent to 21 is sent to common buffer 23
Group-by-group buffer 24 to which the user once belongs via₁~ 24_x
Are accumulated and distributed to the intermittent timing switch 25₁~
25_XIs turned on repeatedly, and intermittent timing
Switch 25₁~ 25_XPaired with the one turned ON
Group-specific buffer 24₁~ 24_xIncoming value from one of
Sent. That is, switch 25₁~ 25 _XIs ON
Wait for each group until they can pass
Sent. The base station 21 and the mobile station 10 are connected to each other as shown in FIG.
As shown in FIG.₁~ 2
4_xTo send an incoming signal at the timing of intermittent period τ
The mobile station 10 belonging to the group in synchronization with₁-10_xIs
The power of the receiving unit 13 is turned on to perform intermittent reception.

The incoming signal is a group-based buffer 24 _i (i = 1,
2, ... x), the base station 21 transmits a meaningless dummy signal instead of the incoming signal, and the mobile station 10 _i performs the intermittent reception similarly to the reception of the incoming signal. FIG. 10 shows the power ON / OFF states of the mobile station during the energization and standby of each unit.

[0005]

DISCLOSURE OF THE INVENTION In the conventional intermittent reception,
Battery saving is realized by the method described above.
However, there are the following issues. FIG. 11c shows a conventional method.
Mobile station 10 belonging to a certain group (#i group)_iAnd base
It shows the relationship of transmission and reception with the station 21. belong to
Group (#i group) there is no incoming signal
A (#i group buffer) 24_iWhen is empty, a dummy signal is sent.
However, when there is little incoming signal traffic,
The mobile station 10 _iContinuously outputs this meaningless dummy signal
Since it will continue to receive intermittently, it consumes unnecessary power.
Would.

Further, always when the incoming signal continues state awaiting transmission are several accumulated in group-specific buffer 24 _i of traffic of the incoming signal to reverse many base station 21, the incoming signal of the group-specific buffer 24 _i Information such as the storage state is not used at all in the related art. Therefore, the object of the present invention is that the mobile station wastefully uses electric power to receive a meaningless dummy signal at the time of low traffic of the incoming signal, and also at the time of the high traffic of the incoming signal, the group-by-group buffer of the base station An object of the present invention is to provide a discontinuous reception method that solves the problem that the information of the incoming signal is not used and suppresses the wasteful use of power by the mobile station.

[0007]

According to the invention of claim 1, when the traffic of the incoming signal is reduced and there is no incoming signal in the group-based buffer, the base station arbitrarily determines how many times the intermittent reception is stopped. Or a predetermined number between the base station and the mobile station, and the number of times the signal is made to suspend intermittent reception, that is, the intermittent reception is suspended until the reception timing determined by the base station or the predetermined reception timing. A signal (hereinafter referred to as a notice signal) is transmitted, and the incoming call is accumulated in the group-specific buffer until the timing of transmitting the incoming signal again. The mobile station receiving the notice signal suspends the intermittent reception until the timing when the base station transmits the incoming signal again.

According to the second aspect of the present invention, the group of mobile stations is further divided into subgroups, the subgroup number of the incoming signal of the group-based buffer, the waiting order of the subgroup numbers, and the incoming signals of the waiting group in the group. A signal in which information such as the number is matched with an incoming signal (hereinafter referred to as a group-specific buffer signal) is transmitted for each group. The mobile station that has received the group-based buffer signal suspends reception of irrelevant intermittent reception timing in accordance with the transmission timing of the sub-group to which it belongs, which is obtained from the group-based buffer signal.

According to the invention of claim 3, in the invention of claim 2, when there is no incoming signal in the group-specific buffer, the base station arbitrarily determines how many times the intermittent reception is to be stopped, or the base station and the mobile station. A signal that is determined in advance and that suspends intermittent reception for that number of times (hereinafter referred to as a warning signal)
Is transmitted and the incoming call is accumulated in the group-by-group buffer until the timing of transmitting the incoming signal again, and the mobile station receiving the notice signal confirms the intermittent reception until the time when the base station transmits the incoming signal again. Pause. That is, the invention of claim 3 is a combination of the invention of claim 1 and the invention of claim 2. In the invention of claim 3, when the mobile station receives the advance notice signal during the intermittent reception, the intermittent reception is stopped until the reception timing according to the advance notice signal or the predetermined reception timing.

According to the invention of claim 4, when the mobile station receives the group-specific buffer signal added to the incoming signal during the intermittent reception, the sub-group to which the local station belongs in the group-specific buffer signal The transmission waiting order is detected, and when this is detected, the intermittent reception is stopped until the next incoming signal of the local sub group is transmitted based on the detected transmission signal order of the sub group, and the local station If no transmission waiting sub group of the sub group to which it belongs is detected, the intermittent reception is stopped by the number of transmission waiting sub groups in the group-specific buffer signal.

In the invention of claim 6, in the invention of claim 5, when the notice signal is received, the intermittent reception is stopped until the reception timing according to the notice signal or a predetermined reception timing.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A shows a mobile station 1 belonging to one group (i-th group) in the embodiment of the invention of claim 1.
The relationship between the power ON / OFF timing of 0 _i and the transmission timing of the i-th group incoming signal of the base station 21 is shown. In this example, an incoming signal transmission / reception timing t to the i-th group
_{In 1} , the incoming signal to the i-th group from the network side is not in the group-based buffer 24 _i , so the base station 21 transmits the advance notice signal 31 to pause the intermittent reception once. Each mobile station 10 _i of the i-th group that has received the notice signal 31 at time t ₁ suspends intermittent reception without turning on the power at the next intermittent reception time t ₂ , and the base station 21 also at timing t ₂ . Do not send or receive incoming signals. Meanwhile time t ₁ and the incoming call 32 _i for the i-th group stored in the group-specific buffer 24 _i between t _2, also call between times t ₂ and t ₃ to group-specific buffer 24 _i call 32
_i is stored. That is, there is an incoming call 32 _{i at} time t ₂ and an incoming signal is stored in the group-specific buffer 24 _i of the i-th group, but as described above, the wireless base station 21 does not transmit the incoming signal. .

Since the incoming signal 32 _i is stored in the group-specific buffer 24 _i at time t ₃ , transmission / reception 33 _i of the incoming signal 32 _i arrived between times t _{1 and} t ₂ is performed, and the i-th group Based on the warning signal 31, the mobile station 10 _i of
The next power-on is omitted, and the power of the receiving unit is turned on at time t ₃ to perform transmission / reception 34 _{i of the} incoming signal. At the next time t ₄ , the incoming signal 32 _i arrived between the times t ₂ and t ₃
Is transmitted from the group-based buffer 24 _i , and the i-th group mobile station 10
_i also sends and receives incoming signals.

At time t ₅ , since there is no incoming signal in the group buffer 24 _i , the advance notice signal 31 is transmitted from the base station 21. Therefore, at the next time t ₆ , the incoming signal is not transmitted / received from the group buffer 24 _i , and the i-th group mobile station 10 _i
Also stops powering on the receiver. In this example, the warning signal 3
1 to stop the intermittent reception once.
However, the wireless base station 21 sets the number of times intermittent reception is stopped in consideration of the normal traffic generation ratio for the i-th group mobile station 10 _i , or according to daytime and nighttime. You may send it. Alternatively, the number of times of intermittent reception stop is determined in advance between the wireless base station 21 and the mobile station, the base station 21 transmits a simple advance notice signal 31, and the incoming signal transmission / reception is stopped for the predetermined number of times, and the mobile station 1
When 0 receives the advance notice signal 31, the intermittent reception may be stopped for the predetermined number of times. In other words, the number of stops does not have to be included in the warning signal 31. That is, the advance notice signal 31 stops the intermittent reception by the mobile station that has received the advance notice signal until the reception timing according to the advance notice signal or a predetermined reception timing.

The operation procedure of the mobile station 10 _{i in} this case is shown in FIG.
Shown in B. At the intermittent reception time (S ₁ ), it is determined whether the received signal from the base station is the incoming signal or the advance notice signal (S ₂ ). If the incoming signal is the incoming signal, it is determined whether the incoming signal is for the mobile station 10 _i . (S ₃ ), if it is for the mobile station, the incoming signal is captured (S ₄ ), and if it is not for the mobile station,
The process returns to step S ₁ and waits for the next intermittent reception time. Step number S received signal in a ₂ indicated in the warning signal 31 in the case of notice signal 31, or a predetermined number of times to stop the intermittent reception returns to the step S ₁ (S _5).

Next, an embodiment of the invention of claim 2 will be described.
In the present invention, the mobile stations belonging to each group are divided into a plurality of sub groups for each group. For example, as shown in FIG. 2A, the mobile stations 10 ₁ to 10 _x of the _first to _x-th groups are respectively a1 to a1.
Divide into subgroups of ay. This division is, for example, first to xth
Similar to the case of division into groups, the last digit of the mobile station number belonging to the group can be calculated by a predetermined operation.

In the radio base station 21, as shown in FIG.
Missing signal generator 41₁~ 41_xIs a group-specific buffer 24₁~ 2
4_xFor the intermittent signal generation unit 41.₁
Is the sub-group information processing unit 42₁And signal assembly processing unit 43₁Toyo
Rinari, sub group information processing unit 42₁Then, the buff according to the group
24₁The last stage of switch 25₁Each except the side step
The stored content of the stage is the signal presence / absence determination unit₁In order,
If there is an incoming signal at each stage, the signal number counter 45₁
1 is counted with. In the illustrated example, the group-specific buffer 24 ₁Number of steps
Is 4, so the signal number counter 45₁The count value Z of
The maximum is 3. Also, group-specific buffer 24₁Wearing each of the above
If there is an incoming signal, the number of the incoming signal at each stage
Subgroup determination unit 46₁Calculate with.

In the signal assembling processor 43 ₁ , in this example, 5
A transmission buffer 47 _first stage, the count value Z of the signal counter 45 ₁ in the second stage, in the illustrated example 2 is stored as transmission waiting incoming signal number, the third stage, group-specific buffer 24 subgroups ₁ of switch 25 ₁ of the second stage the incoming signal from the sub-group determination unit _461, for example, the first sub-group, a
1 is stored as a transmission waiting incoming signal, and similarly in the fourth stage, switches 25 ₁ to 3 of the group-specific buffer 24 ₁
The sub-group of the incoming signal of the second stage, in this example the third sub-group a
3 is stored as the incoming call waiting signal, and the group-based buffer 2
There is no incoming signal at the 4th stage of 4 ₁ and therefore nothing is stored at the 5th stage of the transmit buffer 47 ₁ .

When the switch 25 ₁ is turned on, an incoming signal is stored in the first stage of the transmission buffer 47 _{1 at} the stage connected to the switch 25 ₁ of the group buffer 24 ₁ , and at the same time, the transmission buffer 47 1 Internal contents of ₁ are sent in sequence. The intermittent signal generators 41 _{2 to} 41 _x are also configured similarly to the intermittent signal generator 41 ₁ . In addition, these configurations, that is, the signal presence / absence determination unit 44 ₁ , the signal number counter 45 ₁ ,
In the sub-group determination unit 46 _{1 and the} like, a so-called CPU normally decodes and executes a program for processing. In the above description, the number of signals transmitted after the incoming signal and the sub-group number are referred to as group-specific buffer signals. If there is no incoming signal in the group-specific buffer, a meaningless dummy signal is transmitted.

The mobile station which receives such an incoming signal or the group-specific buffered signal is processed as shown in FIG. 3, for example. At the intermittent reception time (S ₁ ), it is judged whether the received signal from the radio base station is an incoming signal or a dummy signal (S ₂ ). If the incoming signal is the incoming signal, whether it is for the mobile station concerned. A determination is made (S ₃ ), and if it is for the mobile station, the incoming signal is taken in (S ₄ ).

If the received incoming signal is not for the mobile station, it is judged whether or not the group-specific buffer signal is added to the incoming signal (S ₅ ). It is checked whether or not the incoming signal waiting for transmission of the group is included in the buffer signal for each group (S ₆ ), and if it is included, the number of the incoming signal waiting for transmission in the buffer signal for that group is determined. Accordingly, the intermittent reception is stopped until the time when the incoming signal is transmitted from the base station, and the process returns to step S ₁ (S ₇ ).

On the other hand, if the group-by-group buffer signal does not include the incoming signal waiting for transmission of the sub-group of the mobile station, the intermittent reception is stopped for the number of waiting signals Z and the process returns to step S ₁ (S ₈ ). If the group-specific buffer signal is not added to the received incoming signal in step S ₅ , the process returns to step S _1, and if the received signal is a dummy signal in step S ₂ , the process also returns to step S ₁ .

FIG. 4 shows the mobile station 10 of the i-th group._iabout,
Group-based buffer 24 of base station 21_iIncoming signal accumulation status
And the transmission timing of the incoming signal and the first group of the i-th group
Each mobile station 10 is connected to the third to third sub-groups a1 to a3._i1, 1
0_i2, 10_i3With the status of intermittent reception (power ON, OFF)
An example of the relationship is shown. Incoming signal transmission time t₁Before the first sub
The incoming signal of the group a1 and the incoming signal of the second sub group a2 are grouped together.
Another buffer 24_iHas been stored at time t₁To
Is an incoming signal of the first sub group, and
2 is added and transmitted. Time t₁Of the first subgroup
Mobile station 10_i1The incoming signal to the mobile station
Mobile station only sends and receives incoming signals to and from the base station, and
Mobile station 10 of the first sub-group _i1And the movement of the second and third subgroups
Bureau 10_i2, 10_i3Is waiting for transmission from the grouped buffer signal
Knowing that the signal is one of the second sub-group a2,
Mobile station 10 in the third group and the third group_i1, 10_i3Respectively next
Once, that is, at time t_TwoThe intermittent reception is stopped and the second sub
Group of mobile stations 10_i2Is the time t_TwoTo perform intermittent reception. Time t
_TwoBy group buffer 24_iIn the third subgroup,
The incoming signals of the first sub-group and the first sub-group are sequentially accumulated.
You.

Therefore, at time t ₂ , the incoming signal of the second sub group which has been waiting for transmission at time t ₁ is transmitted, and as a group-specific buffer signal, the transmission waiting sub groups a3, a1, a1.
Is added and transmitted. At time t ₂ , only the mobile station 10 _i2 of the second sub-group receives intermittently, and if it is for the mobile station, takes it in. All the mobile stations 10 _i2 of the second sub-group learn from the group-based buffer signals that the following three incoming call waiting signals are not for their own sub-group, and then the next three times (the number of waiting incoming signal Z times). , That is, at times t ₃ and t
Discontinue intermittent reception at ₄ and t ₅ .

The same processing is performed thereafter. When the incoming signal of the second sub group waiting for transmission is transmitted at time t ₁₀ , the group-based buffer 24 _i becomes empty. Therefore, at this time, the grouped buffer signal is not added to the incoming transmission signal. Therefore, the next time t
_{In 11} , all mobile stations 10 _i1 to 10 _i3 of the first to third sub-groups perform intermittent reception. Immediately before this time t ₁₁ , the group-based buffer 24 _i is empty, so that the dummy signal 36 is transmitted from the base station 21.

The invention of claim 3 is the same as the invention of claim 1.
It is a combination of the two inventions. Shown in Figures 3 and 4
As described above, it is divided into sub-groups and the incoming signals are buffered by group.
A signal is added and transmitted, and the mobile station operates in response to this.
Group buffer 24 _iBecomes empty, the dummy signal
The notice signal 31 described in FIG. 1 is transmitted instead of the No. 36.
You. In FIG. 5, the parts corresponding to those in FIG.
The processing procedure of the mobile station is shown. That is, in this case, step S_Two
Then, it is judged whether it is an incoming signal or a warning signal, and the incoming signal
In this case, the process will be the same as in Fig. 4, and it will be judged as a warning signal.
Then, the intermittent reception is canceled for the number of times corresponding to the warning signal and the
Tep S₁Return to (S₉).

FIG. 6 shows the relationship of transmission, reception, and transmission waiting corresponding to FIG. 4 in the embodiment of the invention of claim 3. That is, in this example, the process up to time t ₁₀ is exactly the same as that in FIG. 4, but since the group-specific buffer 24 _i is empty at time t ₁₁ , the notice signal 31 is transmitted instead of the dummy signal 36. . As in the case of FIG. 1, this advance notice signal 31 may send information indicating the number of times of discontinuing the intermittent reception, or the number of times of stop may be determined in advance, and a signal indicating that it is merely the advance notice signal may be sent. . In this example, the warning signal 31
In this case, the base station does not send an incoming signal or an advance notice signal at time t _12, and the mobile stations 10 _i1 , 10 _i2 , and 10 _i3 of the i-th group all Stop intermittent reception.

When the number Z of incoming waiting signals to be transmitted is added to the group-based buffer signals as described above, the sub-groups can be numbered from the tenth. That is, the transmission waiting incoming signals in the group-based buffer signals are 0
No. or meaningless (no incoming call waiting signal) can be distinguished. When the number of sub-groups is large and the number of stages of the group-specific buffers 24 _i is large, the number of sub-groups corresponding to Z is checked next to the information indicating the number Z of incoming call waiting signals in the group-specific buffer signals. Good and useless processing can be eliminated. However, even if the number Z of incoming call waiting signals is not added to the group-specific buffer signals in this way, each mobile station checks whether there are incoming waiting signals for its own sub-group.
The number of incoming call waiting signals is automatically determined, and therefore, the number of intermittent receptions to be stopped can be known.

Further, in the above description, if the number of times of the intermittent intermittent reception is not predetermined as the advance notice signal, the information indicating the number of times of the interruption is transmitted by the advance notice signal, but the information indicating the time at which the intermittent reception is stopped may be transmitted. . Even when transmitting this time, the period of discontinuous reception is constant, so the number of discontinuous reception to be stopped is determined by the stop time, and sending the number of stop times and sending the stop time are substantially the same. Therefore, the notice signal indicates the timing at which the incoming signal of the group should be received next.

In each of the embodiments shown in FIGS. 1 and 6, when the group-specific buffer 24 _i is empty, the notice signal 31 is transmitted, and the incoming signal for the i-th group is transmitted until the transmission timing corresponding to the notice signal. Although the transmission is stopped, the dummy signal may be transmitted as in the conventional case. In particular, in the case of stopping the intermittent reception three times by the advance notice signal, after the advance notice signal indicating the three times is transmitted, the mobile station belonging to the group is moved from the other zone to the service zone of the radio base station. When the mobile station moves, the wireless base station transmits the notification signal of the three times suspension and then the transmission timing of the incoming signal to the group next, so that the mobile station can also benefit from the notification signal. Two
It is preferable that the notice signal of the pause is transmitted, and the notice signal of the pause is transmitted at the transmission timing of the next incoming signal.

[0031]

The invention of claim 1 is effective for battery saving because the number of times of transmitting the advance notice signal increases and the number of times of turning off the power supply of the receiving unit of the mobile station increases when the incoming signal traffic is small. Act on. According to the invention of claim 2, when there is a lot of traffic of the incoming signal, there is a transmission waiting incoming signal in the buffer classified by group, and based on the information of the sub group to which this incoming signal belongs, each sub group of each group is finely adjusted. Since the power of the receiver is turned off, it works effectively for battery saving.

The invention of claim 3 has the same operation as that of the invention of claim 1 when the traffic of the incoming signal is small.
Where there is a lot of incoming signal traffic, the same effect as the invention of claim 2 is exerted, and as a result, the number of times of turning off the power consumed by the receiving unit of the mobile station is suspended regardless of the incoming signal traffic. Because it increases, there is a battery saving effect. Example by Simulation Experimental data on each invention of claims 1 to 3 was obtained by computer simulation.

The simulation model is "call origination".
Occurs according to the Poisson distribution, is accumulated in the group-based buffer, and waits in the buffer of the base station until it is transmitted to the mobile station. At this time, if all the group-specific buffers are full, overflow will occur. The simulation conditions at the time of data acquisition are a simulation time of 3500 seconds, sub-group division a6 sub-group, size of group-specific buffer of 6, power-off number of 3 times, intermittent reception cycle of 1 second, and average number of calls generated of 0.1.
It was set to 10 pieces / second.

FIG. 7A shows a power-on rate (the number of times of power-on by the prior art intermittent reception is 1). The conventional method is
Battery power saving efficiency is 1 (maximum) in any case because the receiver is always turned on at the intermittent reception timing.
Becomes In the invention of claim 1, since the number of power-offs is 3 in the vicinity of a small amount of traffic, the power-on is performed by about 1/3 as compared with the conventional method, and the effect becomes weaker when the traffic increases. Contrary to the invention of claim 1, the invention of claim 2 is the same as the conventional method because the power is turned on almost every time in a place where there is little traffic, but when the traffic increases, it is stored in the group-specific buffer. Since a large amount of signal information is sent, the number of times the power is turned on can be reduced accordingly. Since the invention of claim 3 is a method that combines the inventions of claims 1 and 2, the effect can be obtained regardless of the amount of traffic. Under this condition, power supply of about 1/2 of the conventional method is sufficient. You can see that the effect is high.

FIG. 7B shows the average waiting time (the average waiting time from when a call originates to when the call is transmitted from the group buffer). When the traffic increases, the number of calls generated in one cycle increases, and the amount of traffic is accumulated in the buffer and the transmission waiting time becomes longer. It can be said that the conventional method in which the base station transmits every time and the invention of claim 2 have the best characteristics when the size of the group-based buffer is six. Here, the inventions of claims 1 and 3 in which the base station may wait for transmission in the buffer for three times of power-off after the dummy signal have a long waiting time, which has an effect. Higher traffic has less effect because the probability of dummy signals occurring within the sample time is reduced. In either case, the waiting time is 0.4 seconds or less, and it is considered that there is no effect.

FIG. 7C shows the overflow rate (the overflow rate from the group-specific buffer). The longer the average waiting time, the easier it is to fill the buffer. Therefore, overflow easily occurs, and the characteristics of this time are
It is linked to the average waiting time characteristic. Again, the increase is only a few percent on average, and it is considered that there will be no impact.

As described above, the inventions of claims 1 and 4 suspend the intermittent reception for each group by using the advance signal, and the inventions of claims 2 and 5 also during the high traffic of the incoming signal. The point where the information of the incoming signal of the group-by-group buffer of the base station is not used, the mobile station can be divided into subgroups and the group-by-group buffer signal can be used to suspend the group in a more detailed intermittent reception, According to the inventions of claims 3 and 6, the features of the inventions of claims 1 and 2 are taken in, and there is an effect that the intermittent reception is suspended regardless of the traffic of the incoming signal and wasteful use of electric power is suppressed.

[Brief description of drawings]

FIG. 1A is a diagram showing an example of a relation between an incoming signal accumulation state of an _i- th group buffer 24 _i of an i-th group, its transmission timing, and intermittent reception of an i-th group mobile station in an embodiment of the invention of claim 1; , B is a flowchart showing the processing procedure of the embodiment of the invention of claim 4.

FIG. 2A is a diagram for explaining subdivision of group-specific mobile stations into subgroups, and B is a block diagram showing a functional configuration of a base station in the invention of claim 2.

FIG. 3 is a flowchart showing a processing procedure of an embodiment of the invention of claim 5;

FIG. 4 is a diagram corresponding to FIG. 1A in the embodiment of the invention of claim 2;

FIG. 5 is a flowchart showing a processing procedure of an embodiment of the invention of claim 6;

FIG. 6 is a diagram corresponding to FIG. 1A in the embodiment of the invention of claim 3;

FIG. 7 shows actual data obtained by computer simulation, where A is the power-on rate, B is the average waiting time, and C is the overflow rate.

FIG. 8 is a block diagram showing a schematic configuration of a mobile station.

FIG. 9 is a diagram for explaining grouping of mobile stations.

FIG. 10 is a diagram showing a power ON / OFF state in each unit of the mobile station.

11A is a block diagram showing a functional configuration of group-by-group transmission of an incoming signal of a base station in the prior art, FIG. 11B is a diagram for explaining an operation of discontinuous reception, and C is a group of group i in the prior art. It is a figure which shows the relationship of the incoming signal accumulation state of a buffer, the transmission timing of an incoming signal, and the reception timing of an i-th group mobile station.

Claims (6)

[Claims] 1. A mobile station is divided into a plurality of groups, and when an incoming signal reaches the wireless base station from the network side, the wireless base station accumulates the incoming signal in a buffer for each of the groups, and these groups are grouped. The incoming signal of another buffer is transmitted to each of the groups while being shifted in time, and each mobile station belonging to the corresponding group transmits the incoming signal transmitted to the group to which it belongs at a constant cycle interval. In the intermittent reception method of mobile communication for intermittent reception, when an incoming signal does not exist in the buffer for the group of the radio base station, the advance signal is transmitted, and the mobile station that receives the advance signal during intermittent reception is A discontinuous reception method for mobile communication, characterized by suspending discontinuous reception until a reception timing according to a notice signal or a predetermined timing. 2. The mobile station is divided into a plurality of groups, and when an incoming signal arrives at the wireless base station from the network side, the wireless base station accumulates the incoming signal in a buffer for each of the groups, and these groups are grouped. The incoming signal of another buffer is transmitted to each of the groups while being shifted in time, and each mobile station belonging to the corresponding group transmits the incoming signal transmitted to the group to which it belongs at a constant cycle interval. In the intermittent reception method of mobile communication for intermittent reception, each group is further divided into subgroups, and when the radio base station transmits the incoming signal of the group at the timing of intermittent reception, the incoming call is received in the group-specific buffer. If a signal exists, the group-specific buffer signal indicating the sub-group number and waiting order of the transmission waiting incoming signal is added to the incoming signal and transmitted, and the mobile station receiving the incoming signal during intermittent reception is the mobile station concerned. Wear to If it is not a reception signal, it is confirmed whether or not the group-specific buffer signal includes the transmission-waiting incoming signal of the sub-group to which the mobile station belongs, in the group-specific buffer signal, and the transmission-waiting incoming signal of the sub-group. If is included, from the queuing order, until the transmission scheduled timing when the transmission waiting incoming signal is transmitted from the radio base station,
It is characterized in that the intermittent reception is suspended, and when the transmission waiting incoming signal of the sub group to which the mobile station belongs is not included, the intermittent reception is suspended by the number of incoming waiting signals of the group-specific buffer signal. Mobile communication intermittent reception method. 3. The intermittent reception method according to claim 2, wherein the radio base station transmits a notice signal when there is no incoming signal in the buffer for the group, and the mobile station receives the notice signal during intermittent reception. Is an intermittent reception method for mobile communication, characterized in that the intermittent reception is stopped until the reception timing according to the advance notice signal or until a predetermined reception timing. 4. The group from the wireless base station to which the own station belongs,
In the intermittent receiving method of a mobile station, which intermittently receives an incoming signal transmitted at a fixed cycle, when a notice signal is received during the above intermittent reception, the reception timing according to the notice signal or a predetermined reception timing Discontinuous reception method for a mobile station, characterized by stopping the intermittent reception until. 5. From the base station to the group to which the own station belongs,
In the intermittent reception method of a mobile station, which intermittently receives an incoming signal transmitted at a fixed cycle, when a group-specific buffer signal added to the incoming signal is received during the intermittent reception, the group-specific buffer signal is received. Of the substation to which the own station belongs and the order of its waiting for transmission are detected, and when this is detected, the incoming signal of the detected subgroup of the own station is transmitted based on the detected waiting order of the subgroup. The intermittent reception method for a mobile station, characterized in that the intermittent reception is stopped until the timing to be performed, and if the sub group to which the own station belongs is not detected, the intermittent reception is stopped by the number of the transmission waiting sub groups detected above. 6. The intermittent reception method according to claim 5, wherein when the notice signal is received during the intermittent reception, the intermittent reception is stopped until a reception timing corresponding to the notice signal or a predetermined reception timing. The intermittent reception method according to claim 5, wherein the mobile station is intermittently received.