JPS63199526A - Intermittent reception system - Google Patents

Abstract

PURPOSE:To cope with even the case that a control signal is of variable length by including timing information applying ON/OFF control to a circuit of a reception system of a mobile station equipment into system information or incoming information. CONSTITUTION:The information to apply ON/OFF control to transistors (TRs) 21, 22 in a mobile station equipment 1 by a control circuit 13 is included to a battery saving parameter frame BSP added just after system parameter frames SP1, SP2 of the control signal of a P-channel. Thus, in receiving a system information frame string OMT, since the information mOMT to turn off the TRs 21, 22 is included in the BSP till the next OMT is received, the TRs 21, 22 are turned off until the OMT is received. Thus the on/off control of the TRs 21, 22 in this way is applied repeatedly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention (Field of Industrial Application) The present invention relates to an intermittent reception method in which a mobile station such as a car telephone receives reception intermittently.

(Prior Art) Generally, a mobile station device is required to constantly receive a control signal including an incoming call signal in order to respond to an incoming call.

However, when such a mobile station device is used as a portable device, a battery such as a dry cell battery is used as a power source, and therefore, the constant reception state as described above poses a problem in terms of power consumption.

Therefore, in such portable mobile station devices, an intermittent reception method is often adopted.

Such an intermittent reception method, for example, receives only the system information in the control signal at predetermined time intervals, cancels the reception state at other times, and checks that the system information includes information that should receive the predetermined control signal. It receives the necessary control signal only when it is included.

However, if the above-mentioned control signal has a variable length depending on the amount of traffic, that is, if the time from receiving system information to receiving the next system information is uneven, the above-mentioned intermittent reception There is a problem that cannot be addressed by this method.

(Problems to be Solved by the Invention) As described above, the above-mentioned intermittent reception method in the conventional mobile station device has the problem that it cannot deal with cases where the control signal has a variable length depending on the amount of traffic, etc. be.

The present invention was made based on the above circumstances, and an object of the present invention is to provide an intermittent reception method that can perform reception intermittently even when a control signal has a variable length.

[Structure of the Invention] (Means for Solving the Problems) That is, the intermittent reception method of the present invention includes a control signal that includes at least system information that is constantly broadcast and an incoming call signal that is randomly generated when a call occurs. The mobile station device that receives and is controlled by the control signal is characterized in that the system information or incoming call information includes timing information for 0N10FF control of a receiving system circuit of the mobile station device.

(Function) In the present invention, the mobile station apparatus receives timing information sent from the base station intermittently.

Therefore, it is possible to cope with the case where the control signal has a variable length.

(Example) Hereinafter, details of an example of the present invention will be described based on the drawings.

FIG. 1 is a diagram showing a mobile station device according to an embodiment of the present invention.

The mobile station device 1 shown in the figure includes a transmitting/receiving circuit 3 that forms a wireless link 2 with a base station (not shown), a control signal processing port R4 that processes control signals sent from the base station, and a power supply to these. and a battery circuit 5 that supplies the battery.

The transmitting/receiving circuit 3 receives a reception signal arriving from the base station via the wireless line 2 via the antenna 6 and the duplexer 7, and supplies the signal to the receiver 9, and also sends the signal from the transmitter 10 to the receiver R8. The input transmission signal is sent to the radio line 2 by the transmitter 11 via the duplexer 7 and the antenna 6. Further, this transmitting/receiving circuit 3 has a synthesizer 12, and under the control of a controller lPt13, this synthesizer 12 specifies the transmitting/receiving channel used by the transmitter 11 and the receiver 8. Furthermore, the communication method in this mobile station device 1 uses a control channel to control the incoming call using a control signal, and then performs a normal call using a call signal using a call channel. , - The control signal is sent to the control signal processing circuit 4.

The control signal processing circuit 4 includes a bit synchronization circuit 14 that establishes synchronization with bits of a frame of a control signal sent from a base station according to a fixed time slot, and a bit synchronization circuit 14 that establishes synchronization with bits of a frame of a control signal sent from a base station according to a fixed time slot. A frame synchronization circuit 15 is provided to establish synchronization with the frame. Further, this control signal processing circuit 4 is a control signal reception processor that receives and processes a control signal at the established timing when synchronization with bits and frames is established in a bit synchronization circuit 14 and a frame synchronization circuit 15. A signal processed by the control signal reception processing circuit 16 is sent to the control circuit 13.

On the other hand, the battery circuit 5 includes a battery 17 and a power supply control circuit 18 for stably supplying power from the battery 17. Also, one switch is inserted between the panteri 17 and the power controller #118,
With this one switch, the entire mobile station device 1 can be set to 0N.
10FF can be switched. Further, a transistor 20 is connected between the current f$IJtip circuit 18 and the transmitter 11, and a transistor 20 is connected between the current control circuit 18 and the synthesizer 12.
A transistor 21 is connected between the current control circuit 18, the bit synchronization circuit 14, and the frame synchronization circuit [
15 and the control signal reception processing circuit 16, transistors 22 are respectively inserted, and these transistors 20, 21, and 22 are set to zero under the control of the control circuit 13.
N10FFflilJ control is now performed.

Next, the format of the control signal frame used between the mobile station device 1 and the base station via the control channel will be explained based on FIG. 2.

In other words, the control channel is the D channel, which is used when setting the initial state, and the P channel, which is sometimes used when waiting for receiving an incoming call signal.
channel and the A channel, which will be used later for incoming call signal reception, but the basic frame format is two sets of system parameter frames (System Parameter Frames) containing system information.
ame) SP+, SF3 with frames added as needed, and has a variable length that varies from a minimum of 2 frames to a maximum of 16 frames depending on conditions such as traffic volume. Note that the frames added as described above include control filler frames (Cntro filler frames).
There are control channel switching frames DR, to DR4, which are composed of two sets of communication channel designation signal frames IVCD, IVCD2.4RIt, and call information frame PAGE. Furthermore, especially for the P channel, a battery saving parameter frame BSP, which will be described later, is added immediately after the system parameter frames SP+ and SF3.

Next, incoming call connection control performed by the mobile station device 1 having the above-described configuration and control signals will be explained based on FIG. 3.

First, when the mobile station device 1 is powered on (step 301), it is initialized (step 302).
, a scan is performed on the D channel in the control channel (step 3G3). This scan is to find the channel with the highest electric field strength among the D channels consisting of 21 channels, and this channel is used to receive position information, etc. will be held.

Next, a scan similar to that described above is performed on a P channel consisting of, for example, 21 channels (step 304), after which a predetermined P channel waits for reception of an incoming call signal (step 305), and during this time When an incoming call signal is received, a scan similar to that described above is performed on, for example, the A channel consisting of 21 channels (step 306).
, transmit a response signal on a predetermined channel (step 30).
7) Also receives a communication channel designation signal (step 308).

Thereafter, the communication channel is switched to the designated communication channel (step 309), a calling signal is received through this communication channel (step 310), and a response is then made (step 31).
1) The same operation as a regular telephone is performed until the call (step 312 > and the end of the call (step 313)).
When this operation is completed, the process returns to step 304 again.

Now, in this embodiment, steps 304 to 30 described above
When waiting for an incoming call signal between 5 and 5, the following intermittent reception is sometimes performed.

That is, the battery saving parameter frame BSP added immediately after the system parameter frame sp, SF2 of the control signal in the P channel includes information for causing the control circuit 13 to control the transistors 21 and 22 in the mobile station device 1 to 0N10FF. As shown in FIG. 4, this causes transistors 21 and 22 to become
N/.

It is a timing chart showing the timing of FF. In addition, in the following, the system parameter frame s
A frame string consisting of p, , SF2, battery saving parameter frame BSP, etc. is called a system information frame string OMT' (Overhead Message
e Train).

As shown in FIG. 11, the j transistors 21 and 22 are initially set to the ON state, and when the system information frame sequence OMT is received in this state, the battery saving parameter frame of this system information frame sequence OMT is The BSP has the following system information frame sequence O
Information mOMT to keep the transistors 21 and 22 in the OFF state until receiving MT is included, thereby causing the transistors 21 and 22 to be in the OFF state until the next system information frame sequence OMT is received.

Below, 0N10F of such a transistor 21.22
F control is performed repeatedly, but if it is necessary to receive the incoming call information frame PAGE between the system information frame sequence OMT and the next system information frame sequence OMT, at this time Transistor 21.22
By including information such as "PAGE" in the battery saving parameter frame BSP that turns on the transistors 21 and 22, the transistors 21 and 22 turn on at this timing.
It enters the N state, and as a result, the incoming call information frame PAGE
is received and an incoming call signal is received.

Note that the same process as described above is performed when receiving other frames.

However, the signal waiting for a normal incoming call signal is sometimes
Since the transistors 21 and 22 are in an OFF state except when receiving the system information frame string OMT, the signal processing circuit 4 is connected to the battery circuit 5, the signal processing circuit 4, the receiver 8, and the synthesizer 1.
In other words, in this state, only the control circuit 13 and the power supply control circuit 18 are supplied with power from the battery circuit 5. Power consumption can be reduced.

Furthermore, as described above, when the control signal frame has a variable length depending on the amount of traffic, etc., in other words, the system information frame sequence OMT and the next system information frame sequence OMT
Even if the interval between the two terminals is variable, this can be handled by changing the information moMT of the battery saving parameter frame BSP each time.

In the above case, the system information frame sequence OMT was composed of the system parameter frames sp, , sp2 and the battery saving parameter frame BSP, but this system information frame sequence OMT is composed of other frames or multiple battery saving parameter frames. When the parameter frame BSP may be included, that is, it is of variable length, for example, the system parameter frame S at the beginning of this system information frame sequence OM 'I'.
This can be handled by including information n in P1 without indicating the number of frames. Note that the battery saving parameter frame BSP may be composed of a plurality of frames instead of one frame.

Further, the transistors 21 and 22 are then turned on by the information 1nOMT included in the battery saving parameter frame BSP of the system information frame sequence OMT described above.
It is preferable that the timing at which the state should be changed is as shown in FIG. 5, for example. That is, transistor 2
1. After 22 is turned ON, the rise time of the receiver 8 and the synthesizer 12, and the rise time of the receiver 8 and the synthesizer 12, until the control signal is completely received by the mobile station device 1, and this becomes possible to receive the rise. After bit synchronization time,
Furthermore, information m that should turn on the transistors 21 and 22 at a timing that takes into account the subsequent frame synchronization time.
It is preferable to use oMT. Also, transistor 2
The timing at which transistors 1.22 should be turned off is preferably such that the transistors 21.22 are turned off at a timing that takes into consideration the control signal processing time by the control signal reception processing circuit 16.

Next, the frame structure of a control signal when the invention is applied to a system currently in operation will be explained in detail.

FIG. 6 shows a general configuration of a system parameter frame. The fact that the first 2 bits (T+72) are 11 indicates that the frame is a OM 'T''.The type of frame such as this is determined from the 26th bit of each frame. 2
It is recognized by the 8bth 3-bit value (OHD). That is, for example, if OHD=110, the wordl(SPI) of the system parameter frame, 0HD=1
If it is 11, it is word 2 of the system parameter frame.
(SF3>, 0HD=001, it is recognized as a control filler frame.

FIG. 7 is a diagram showing an area in which information n indicating the frame condition described in page 12, line 18 to page 13, line 12 of the present specification is included.

In the figure, this n is expressed using 4 bits of NAWC.

Therefore, the number of frames that follow the system parameter frame SP1 can be specified from O to 15 (2''-1>). Note that NAWC only refers to the number of frames that follow, and each frame The output can be recognized by the OHD value of each frame.

Next, FIG. 8 shows the system parameter frames Sp, s
FIG. 3 is a diagram illustrating an example of a frame structure of a battery saving parameter frame BSP following p2.

Battery saving parameter frame BSP 5th bi
The area from the tth bit to the 24th bit can contain any information, but in this battery saving parameter frame BSP, the 15th bit to the 24th bit are used, and the next system Contains information indicating the time slot of the information. For example, from this battery saving parameter frame BSP 15
When the next OMT is in the th slot, data r 0000001?11J is entered in this area. When this data is received, when the reception timing of the 15th slot from this battery saving parameter frame BSP arrives, the transistors 21 and 22 are turned on, and the receiving section and the control signal processing circuit 4 are put into operation. Therefore, the battery saving parameter can be specified in the 1st to 210th frames following this battery saving parameter frame BSP. Note that it is OHD that this frame is a battery saving parameter frame BSP that includes information indicating the time slot of the next system information.
is recognized as r 0104.

Next, Figure 9 shows system parameter frames SP1 and SF.
Battery saving parameter frame B following 3
It is a figure which shows another example of the frame structure of SP.

In this battery saving parameter frame BSP, the 15th bit to the 24th bit are used to store information indicating the time slot of the incoming call signal in this area. For example, if there is an incoming call signal in the 10th slot from this battery saving parameter frame BSP, this area contains r 0000001010. The data is entered. When this data is received, when the reception timing of the 10th slot from this battery saving parameter frame BSP arrives, the J transistors 21 and 22 are turned on, and the receiving section and the control 911 signal processing circuit 4 are put into the operating state. shall be. Note that it is recognized that this frame is a battery saving parameter frame BSP including information indicating the time slot of the incoming call signal because the OHD is "r011".

Next, FIG. 10 shows the system parameter frames SP, ,S
FIG. 7 is a diagram showing still another example of the frame structure of the battery saving parameter frame BSP following F3.

In this battery saving parameter frame BSP, all areas (5th bit to 24th bit) that can contain arbitrary information are utilized, and the first 10 bits are
The information indicating the time slot of the next system information is entered in , and the information indicating the time slot of the incoming call signal is entered in the latter 10 bits. According to this battery saving parameter frame BSP, the free space of the battery saving parameter frame BSP can be effectively utilized, and the number of battery saving parameter frames BSP is not increased more than necessary. In addition, in Fig. 10, 0HD=r0
11'', which makes it indistinguishable from the battery saving parameter frame BSP in Figure 9. Therefore, when building the system, it is necessary to set in advance to which battery saving parameter frame BSP 0HD = r 011° is allocated. There is a need.

Furthermore, the present invention can be applied even when a large number of mobile station apparatuses is divided into a plurality of mobile station apparatuses and calls are received for each group.

That is, in this case, the intermittent reception method of the present invention can be realized by including information indicating the group in the battery saving parameter frame BSP and receiving only the incoming call information frame PAGE corresponding to each group for each group. be done. Specifically, as shown in FIG. 11, the battery saving parameter frame BSP can include an area jjl! of arbitrary information. (5th b to 24th b) 20 bits
s to each group (therefore, up to 20 groups can be set), each mobile station device assigns the
The group to which the own device belongs is set. For example, if it belongs to group 15, if the 15th bit of this area is "0", it is assumed that there is no incoming call to the device, and the next OMT
Turn off the receiving section and control signal processing section until the timing of reception.
state, and if it is "1", it means that there is an incoming call to the own device,
It is assumed that the X-th battery saving parameter frame BSP is set in advance when the system is constructed. ) The receiving section and the control signal processing section are turned on at the reception timing of the time slot.

Note that in this case, OMT reception needs to be performed periodically.

Also, as shown in Fig. 12, the 20-bit arbitrary area is divided into the first half and the second half, and information indicating the group is entered in the first 4 bits of the first half, and in the next Qbits, the number of time slot from the battery saving parameter frame BSP is entered. Information as to whether there is an incoming call may also be included. For example, the 10 bits in the first half are roloooolo.
If there is data "lo", it means that there is an incoming call to one of the mobile station devices belonging to the fourth group, and that the incoming call is in the 10th slot from the battery saving parameter frame BSP. Therefore, if the mobile station device that received this battery saving parameter frame BSP belongs to the fourth group, the receiving unit and control signal processing circuit 4 are operated at the reception timing of the 10th slot from this battery saving parameter frame BSP. state. In addition, the second half of 10 bits is also the first half of 1 bit.
This is the same as 0bits. Therefore, one battery saving parameter frame BSP can contain two groups of call information. Conversely, if there are incoming calls in five groups, three battery saving parameter frames BSP are required. In this case, the system parameter frame S P , Ill as shown in FIG.
The number of subsequent battery saving parameter frames BSP may be specified by NAWC.

Also, in Fig. 12, the data indicating the group is "0000".
In this case, the time slot of the first block may indicate the time slot of the next system information, and the time slot of the next block may indicate the time slot of the incoming call signal.

Furthermore, each incoming call information frame PAGA specified in the battery saving parameter frame BSP in FIG. 9, FIG. 10, FIG. 11, or FIG. 12 requires a plurality of frames as the number of appetizers increases. The length of the frame is variable, but in this case, the incoming call information frame PA
This can be handled by including information indicating the number of incoming call signals in the GE. Specifically, as shown in FIG. 13, the number (k) of subsequent incoming call signals is shown.

Please note that the MINI on Page 1 includes the local phone number and
GE2's MIN2 contains the long-distance office m telephone number, and Pag
el. and Page2 are identified by the first 2 bits 'rIT2' of '01' or '10'. FIG. 14 is a diagram showing a case where there are three consecutive incoming call information frames.

Page 2 of each frame contains information on the number of subsequent frames. Therefore, only the receiving station turns on the receiving system.
It can be a state.

Specific examples of frame ellipse formation have been described above, but by combining each frame, various horizontal system constructions are possible. In addition, in the current system, OHD is roloJ,
Since "011" and rlol are not set, OHD can be allocated and set without relying on the above example.

Further, the present invention is not limited to voice communication such as telephone communication, but can be applied to a wide range of applications such as data communication.

[Effects of the Invention] As explained above, according to the intermittent reception method of the present invention, reception is performed intermittently even when the control signal has a variable length,
This reduces the power consumption f during reception by the mobile station device.
Hi is planned.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a mobile station device according to an embodiment of the present invention, FIG. 2 is a diagram of the format of a control channel frame in this embodiment, and FIG. 3 is a connection for incoming calls in this embodiment. Flowchart to explain the control,
FIG. 4 is a time chart for explaining the intermittent reception method in this embodiment, FIG. 5 is a partially enlarged view, and FIG. 6 is a diagram showing the general configuration of the system parameter frame in this embodiment. 7 is a diagram showing an area in which information n indicating the number of frames is included in the frame shown in FIG. 6, and FIG. 8 is a frame of the battery saving parameter frame BSP following the system parameter frames sp, sp2 in this embodiment. Diagram showing an example of the configuration, No. 9
14 to 14 are system parameter frames sp, s
FIG. 7 is a diagram showing another example of the frame structure of the battery saving parameter frame BSP following p2. 2... Mobile station device 3... Transmission/reception circuit 4... Control signal processing circuit 5...
...Battery circuit 20.21.22...Transistor applicant Toshiba Corporation Patent attorney Satoshi Suyama - Figure 1 Figure 3 Figure 5 Figure 6 Figure 7 lol 11 Figure 12 Figure 13 Figure 14

Claims (6)

[Claims] (1) In a mobile station device that receives a control signal that includes at least system information that is constantly broadcast and an incoming call signal that is randomly generated due to the occurrence of a call, and is controlled by the control signal, the system information or the incoming call signal is controlled by the control signal. For information,
An intermittent reception system characterized by including timing information for ON/OFF control of a reception system circuit of the mobile station device. (2) The intermittent reception method according to claim 1, wherein the timing information is information indicating the number of frames of system information. (3) The intermittent reception method according to claim 1, wherein the timing information is information indicating a time slot of the next system information. (4) The intermittent reception system according to claim 1, wherein the timing information is information indicating a time slot of an incoming call signal. (5) The intermittent reception method according to claim 4, wherein the timing information is information indicating a group. (6) The intermittent reception system according to claim 5, wherein the information indicating the group includes information indicating the number of incoming call signals.