JP3834055B2 - Base station equipment - Google Patents

Description

  The present invention relates to a base station apparatus of a mobile communication system.

  In mobile communication systems such as digital automobile telephone systems, mobile station apparatuses include portable, in-vehicle, and portable mobile devices. Generally, the configuration of the antenna system and transmission power differ depending on these forms. In addition, for mobile and mobile mobile station devices, a wireless transmission path formed between the mobile station device and the base station because the mobile mobile device can be located in a narrow alley or building where it cannot be located. Therefore, the transmission quality is not always good because a large loss occurs and the fading is caused by the surrounding features and the like.

FIG. 16 is a diagram illustrating a configuration example of a conventional base station apparatus.
In the figure, are connected to the corresponding antenna terminal of each amplifying device 53 includes an antenna 52 for receiving the antenna 51 for transmission, reception shelves each port of the amplifier 53 through the distribution synthesizer 54 _{1-54 3} Connected to 55 _{1 to} 55 ₃ . The control inputs / outputs of the transmission / reception shelves 55 _{1 to} 55 ₃ are connected to the corresponding inputs / outputs of the base station controller 56, and the PCM input / output terminals of the transmission / reception shelves are connected to the PCM interface unit 57, the synchronous terminal device 58 and the transmission path. To the opposite control center (not shown).

The transmission / reception shelf 55 ₁ includes transmission / reception units 59 _{11 to} 59 _1N individually corresponding to a plurality of radio channels and a shelf control unit 60 _{1 that} performs overall control thereof.
The configuration of the transceiver shelf 55 _2, 55 _3, since it is identical to the structure receiving shelves 55 _1, a description thereof will be omitted.
FIG. 17 is a diagram illustrating a configuration example of a conventional mobile station apparatus.

In the figure, the antenna 71 ₁ is connected to the antenna terminal of the duplexer 72, and the reception output thereof is connected to one input of the demodulator 74 via the reception unit 73 ₁ . The antenna 71 ₂ is connected to the other input of the demodulator 74 via the receiving unit 73 _2, and the output of the demodulator 74 is connected to the demodulation input of the TDMA unit 75. The reception output of the TDMA unit 75 is connected to the decoding input of the codec 76, and the decoding output of the codec 76 is connected to the receiver 77. The output of the microphone 78, which forms a handset with the receiver 77, is connected to the encoding input of the codec 76. The modulation output of the TDMA unit 75 is connected to the input of the waveform shaping unit 79, and one output of the waveform shaping unit 79 is connected to the input of the power amplifier 81 via the quadrature modulator 80. The other output of the waveform shaping unit 79 is connected to the other input of the power amplifier 81, and the output of the power amplifier 81 is connected to the transmission input of the transmission / reception duplexer 72. Corresponding outputs of the synthesizer 82 are connected to the local oscillation input of the receiving units 73 ₁ and 73 ₂ and the carrier wave input of the quadrature modulator 80, for controlling these receiving units 73 ₁ and 73 ₂ , synthesizer 82 and TDMA unit 75. The corresponding input / output of the control unit 83 is connected to the input / output of. Specific input / output of the control unit 83 is connected to the display operation unit 84.

In the base station apparatus configured as described above, among the transmission / reception units mounted on the transmission / reception shelves 55 _{1 to} 55 ₃ , predetermined ones are used as control channels under the control of the base station control device 56 and the shelf control unit 60 _1. The broadcast information is repeatedly transmitted, and the setting of the radio channel is controlled through such a control channel, and the communication interface with the network is established through the PCM interface unit 57 and the synchronous terminal device 58.

On the other hand, in the mobile station apparatus, the control unit 83 sets a single or a plurality of perch frequencies in advance, and sets one of these perch frequencies in the synthesizer 82 when the power is turned on (FIG. 18 (1)). The synthesizer 82 generates the perch frequency set in this way and supplies it to the receiving units 73 ₁ and 73 ₂ and the quadrature modulator 80. The receiving unit 73 ₁ receives the radio channel indicated by the perch frequency from the base station. The received electric field strength L1 of the notification signal is measured (FIG. 18 (2)). The control unit 83 compares the received electric field strength with the minimum electric field strength (hereinafter referred to as “cut-off level”) L _th1 that is subject to the verification of the transition condition to the area (FIG. 18 (3)). When the value exceeds the latter, the perch frequency is stored in a memory (not shown) together with the measured received electric field strength (FIG. 18 (4)), and when the value is lower, the accumulation is omitted. A series of processes is repeated for all the perch frequencies described above (FIG. 18 (5)).

Further, when such a series of processing is completed, the control unit 83 determines whether any perch frequency is accumulated in the above-described memory (FIG. 18 (6)). Is not located in any wireless zone (hereinafter referred to as “out of service area”) (FIG. 18 (7)), the above-described series of processing (FIGS. 18 (1) to (6)) is repeated. .
However, if at least one perch frequency is accumulated, the control unit 83 sorts the accumulated perch frequencies in descending order of the received electric field strength (FIG. 18 (8)). Further, the control unit 83 preferentially selects the perch frequencies sorted in this way and has a high received electric field strength and sets the selected perch frequency in the synthesizer 82 (FIG. 18 (9)). the received signal strength L2 of the broadcast signal received under through the receiver 73 ₁ is measured (FIG. 18 (10)).

Further, the receiving unit 73 ₁ gives a notification signal received in parallel with the measurement of the received electric field strength L2 to the demodulator 74, and the demodulator demodulates the notification signal to generate a baseband signal. . The TDMA unit 75 analyzes such a baseband signal based on a predetermined frame configuration and gives the contents to the control unit 83.
The control unit 83 determines whether or not the notification signal is normally received by determining the normality of the content of the notification information given in this way (FIG. 18 (11)). Further, when the control unit 83 recognizes that the broadcast information has not been normally received by such determination, the following perch frequencies stored in the memory in the descending order of the received electric field strength are shown in FIGS. The process shown in 11) is sequentially repeated (FIG. 18 (12)). Further, the control unit 83, when the broadcast signal under such process is successfully received via the reception unit 73 ₁ measures the reception field strength L2 of the broadcast signal again, the received field strength And the minimum electric field intensity L _th2 (hereinafter referred to as “downlink waiting permission level”) that should allow the own station to wait (FIG. 19 (13)). When the control unit 83 recognizes that the former exceeds the latter under such a comparison, the control unit 83 shifts to a standby state to be described later. Similarly to the case where the received signal strength is not received, the processes shown in FIGS. 18 (9) to (11) are sequentially repeated for the subsequent perch frequencies stored in the memory in the descending order of the received electric field strength (FIG. 18 (12)). In the following, the processing performed by the control unit 83 (FIGS. 19 (1) to (12)) at the time of turning on the power or in the process of shifting from the out-of-service state to the standby state as described above is simply “in-service processing”. It shall be called.

Further, in the standby state, the control unit 83, a received signal strength L3 of the wireless channel in standby through the receiver 73 ₁ is measured at a predetermined frequency (Fig. 19 (13)), a standby state and the received field strength Is compared with the minimum electric field intensity L _th3 (hereinafter referred to as “downward standby deterioration level”) that is allowed to continue (FIG. 19 (14)). Further, as a result of such comparison, the control unit 83 stops when it is recognized that the former exceeds the latter, and recognizes that it is out of range when it recognizes that the former is below. A series of processing shown in FIGS. 18 (1) to 18 (6) is performed (FIG. 18 (7)).

The control unit 83 monitors the operation performed by the subscriber via the display operation unit 84 during the period in which the control unit 83 is in the standby state, and also includes an antenna 71 ₁ , a duplexer 72, a reception unit 73 ₁ , a demodulator. 74 and control information (for example, selective call command) received from the base station via the TDMA unit 75, and various events (for example, location registration request) are monitored based on a predetermined control procedure. Thus, when a call relating to the own station is detected (FIG. 19 (15)), the call is processed (FIG. 19 (16)).

In the course of such processing, for example, control information (for example, a call request) generated by the control unit 83 is included in a frame based on the frame configuration described above by the TDMA unit 75, and a bit string indicating the frame is a waveform shaping unit. The band is limited under the waveform shaping process performed by 79, and is subjected to π / 4 shift QPSK modulation by the quadrature modulator 80 and transmitted to the base station via the power amplifier 81 and the duplexer 71 ₁ . However, since the contents of such processing are not directly related to the present application, detailed description thereof is omitted here.

Further, in the base station apparatus, the base station control apparatus 56 is provided in correspondence with the transmission / reception units mounted on the transmission / reception shelves 55 _{1 to} 55 ₃ that form the control channel described above and the transmission / reception shelf. Sends and receives various control information (for example, the selective call command, the location registration request, the call request, etc.) described above with the mobile station device located in the wireless zone formed by the own station via the distribution synthesizer and the amplification device 53. To do. Further, when any control information is received from the mobile station device in this way, the base station control device 56 analyzes the contents of the control information (FIG. 20 (1), (2)), and determines a plurality of predetermined information. Among these processes, processes adapted to the results of such analysis are sequentially activated (FIG. 20 (3)).

Here, since the contents of such processing are not directly related to the present application except for those related to processing added in each embodiment described later, detailed description thereof will be omitted.
In addition, the above-described downlink standby permission level L _th2 and downlink standby degradation level L _th3 can be notified to the mobile station by the base station device including these values or identification information in the broadcast information and transmitting it. Here, for the sake of simplicity, it is assumed that the mobile station apparatus applies the downlink standby permission level L _th2 and the downlink standby degradation level L _th3 as known values.
Japanese Patent Application No. 4-072468

The present invention, when a downlink electric field measuring means for measuring a reception field strength of a received wave from the base station, the measured reception field strength above the threshold value, transmitting means for transmitting a signal to the base station, the A receiving means for receiving a notification transmitted from the base station in response to a signal transmitted by the transmitting means, and a standby control means for starting standby at the base station upon reception of the notification To do.

The present invention, when a downlink electric field measuring means for measuring a reception field strength of a received wave from the base station, the measured reception field strength above the threshold value, transmitting means for transmitting a signal to the base station, the A receiving means for receiving a notification transmitted from the base station in response to a signal transmitted by the transmitting means, and another notification different from the notification, and starting standby at the base station by receiving the notification; And a standby control means for holding the start of the standby by receiving the other notification.

  The present invention includes an adjacent zone electric field strength measuring means for measuring a received electric field strength of a radio zone adjacent to a current zone in the standby state, a received electric field strength measured by the adjacent zone electric field strength measuring means, and the downstream electric field. A zone transition monitoring unit that compares the difference between the received electric field intensity measured by the measuring unit and a preset lower limit value and recognizes the adjacent wireless zone as a new in-zone zone when the former exceeds the latter The standby control means switches the radio zone to the new zone.

In the present invention, the transmission means transmits the signal to the base station at a predetermined frequency in the standby state.
In the present invention, the transmission means transmits the signal to the base station in accordance with the received electric field strength with respect to the threshold when a call generated in the own station is extinguished.
The present invention comprises a state detection means for detecting a state where the own station has moved out of the service area of the current zone or a state before starting the standby after the start-up, and the transmission means is detected by the state detection means. In the state, the signal is transmitted to the base station according to the received electric field strength with respect to the threshold.

In the present invention, the signal transmitted by the transmission means is configured as a plurality of frames including identification information indicating the signal and identification information of the own station.
In the present invention, the signal transmitted by the transmission means is configured as a preceding frame including identification information indicating the signal and identification information of the own station, and a subsequent frame indicating identification information of the own station. And

The present invention provides an uplink electric field strength measurement for measuring a received electric field strength of a signal received from a mobile station device in a base station device that forms a wireless zone and provides a communication service to a mobile station device located in the wireless zone. And a response means for transmitting a notification to that effect to the mobile station device when the measured received electric field strength is greater than or equal to a threshold value.
In the present invention, when the received electric field strength measured is smaller than the threshold value, the response means transmits an impossibility notification to that effect to the mobile station apparatus.

In the present invention, threshold values, the mobile station apparatus may be higher than the reception electric field intensity can be determined to have migrated from the radio zone to out-of-service.
In the present invention, the threshold is characterized by lower than reception field strength capable allow migration of the mobile station device with respect to distance of radio zones.
(Function)
In the mobile station apparatus according to the present invention, the downlink electric field measuring means measures the received electric field strength of the received wave from the base station. Transmitting means, the measured received electric field strength in the case of more than the threshold value, sends a signal to the base station. The receiving unit receives a notification transmitted from the base station according to the signal transmitted by the transmitting unit. The standby control means starts standby at the base station upon reception of the notification.

In the mobile station apparatus according to the present invention, the downlink electric field measuring means measures the received electric field strength of the received wave from the base station. Transmitting means, the measured received electric field strength in the case of more than the threshold value, sends a signal to the base station. The receiving unit receives a notification transmitted from the base station according to the signal transmitted by the transmitting unit and another notification different from the notification. The standby control means starts standby at the base station upon reception of the notification, and suspends the start of standby upon reception of the other notification.

  In the mobile station apparatus according to the present invention, the adjacent zone electric field strength measuring means measures the received electric field strength of the radio zone adjacent to the in-zone zone in the standby state. The zone transition monitoring means compares the difference between the received electric field strength measured by the adjacent zone electric field strength measuring means and the received electric field strength measured by the downstream electric field measuring means with a preset lower limit value. When the latter is exceeded, the adjacent wireless zone is recognized as a new in-zone zone. The standby control means switches the wireless zone to the new visited zone.

In the mobile station apparatus according to the present invention, the transmission means transmits the signal to the base station at a predetermined frequency in the standby state.
In the mobile station apparatus according to the present invention, the transmission means transmits the signal to the base station according to the received electric field strength with respect to the threshold when the call generated in the local station is extinguished.
In the mobile station apparatus according to the present invention, the state detection means detects a state where the own station has moved out of the service area of the current zone, or a state before starting the standby after the start-up. The transmission means transmits the signal to the base station according to the received electric field strength with respect to the threshold value in a state detected by the state detection means.

In the mobile station apparatus according to the present invention, the signal transmitted by the transmission means is configured as a preceding frame including identification information indicating the signal and identification information of the own station, and a subsequent frame indicating the identification information of the own station. Is done.
In the base station apparatus according to the present invention, the uplink electric field strength measuring means is received from the mobile station apparatus in the base station apparatus that forms a radio zone and provides a communication service to the mobile station apparatus located in the radio zone. Measure the received field strength of the signal. When the measured received electric field strength is greater than or equal to the threshold value, the response means transmits a notification indicating that to the mobile station apparatus.

In the base station apparatus according to the present invention, when the measured received electric field strength is smaller than the threshold value, the response means transmits an impossibility notification to that effect to the mobile station apparatus.
In the base station apparatus according to the present invention, the threshold value, the mobile station apparatus is higher than the reception electric field intensity can be determined to have migrated from the radio zone to out-of-service.
In the base station apparatus according to the present invention, the threshold is lower than the reception electric field strength capable allow migration of the mobile station device with respect to distance of radio zones.

In the present invention, when the mobile station confirms that the transmission quality of the downlink radio channel has reached the standard to be satisfied for providing the communication service, the mobile station notifies the base station of the fact, and the base station for the notification Wait for confirmation after confirming the response or permission.
Therefore, it is possible to notify the base station of the timing for confirming the transmission quality of the uplink radio channel and prompt the confirmation.

In the present invention, in response to a permission request transmitted to a base station, a permission notification and a disapproval notification that can be received from the base station are monitored in parallel, and waiting is started depending on which of these notifications is received. Alternatively, a hold is made.
Accordingly, standby is promptly suspended in response to the notification of impossibility, and a trial of standby in another wireless channel in the existing zone or a trial of moving to a new area in another wireless zone is promoted.

In the present invention, the transmission quality of the upper and lower radio channels is surely confirmed when moving to another zone, and the transmission quality is kept high in accordance with the characteristics of the mobile station apparatus that is operated while moving essentially. It is.
In the present invention, since a standby permission is transmitted to the base station at a predetermined frequency during standby, fluctuations in transmission characteristics of the upper and lower wireless channels caused by movement and the position of surrounding features are appropriately confirmed and waited. An opportunity to select a wireless zone and a wireless channel should be obtained.

In the present invention, transmission quality is appropriately confirmed against an increase in loss of the wireless transmission path according to movement during a call and deterioration of characteristics of the wireless transmission path caused by surrounding features at the end of the call, and An opportunity to select a wireless zone and a wireless channel to be awaited is obtained.
In the present invention, when the mobile station moves to the area, the transmission quality of the upper and lower wireless transmission paths is confirmed, and standby is started, so that the service quality is kept high.

In the present invention, since the permission request is transmitted by being made redundant in a plurality of frames, the possibility that the permission request is not received at the receiving end of the base station due to the deterioration of the transmission quality of the uplink radio channel is reduced. Therefore, the accuracy of confirming the transmission quality prior to the start of standby is increased, and the digital transmission system can be flexibly adapted to a high transmission rate.
In the present invention, since the permission request is divided into a plurality of frames and transmitted, the possibility that the reception field strength cannot be measured at the receiving end of the base station due to the degradation of the transmission quality of the uplink radio channel is reduced, The accuracy with which the transmission quality can be confirmed prior to the start of standby is increased, and it is possible to flexibly adapt to a digital transmission system having a high transmission rate.

In the present invention, the base station notifies the mobile station that the transmission quality of the uplink radio channel has reached the standard to be satisfied in order to provide the communication service, so that the communication path related to the call generated in the mobile station. Keeping the transmission quality of the high accuracy and good.
In the present invention, when the received electric field strength of the received wave arriving from the mobile station located in the zone is smaller than the threshold value, a notification of failure is transmitted to the radio channel for which the received electric field strength is measured. Accordingly, it is promptly notified that the transmission quality of the uplink radio channel does not reach the standard capable of providing the communication service.

In the present invention, it is possible to accurately determine whether or not to allow the mobile station apparatus that intends to move out of service area while confirming the transmission quality of the upper and lower wireless channels in the wireless zone formed by the own station.
In the present invention, it is possible to accurately determine whether or not to allow a mobile station apparatus that intends to move to a new area while checking the transmission quality of the upper and lower wireless channels for the wireless zone formed by the own station. .

  As described above, in the mobile communication system to which the present invention is applied, prior to the start of the standby after the mobile station starts up or moves out of the service area and then enters the service area again, or restarts and waits after the call. When the standby is continued, confirmation is made between the mobile station and the base station that the received electric field strengths of the upper and lower radio channels exceed a predetermined value.

  Therefore, the irreversibility of the upper and lower radio transmission paths caused by the diversity is absorbed while flexibly adapting to the variety of mobile station forms, and the degradation of the radio transmission path due to the movement of the mobile station, etc. On the other hand, the quality of communication service is maintained high while ensuring good transmission quality. Further, the occurrence probability of unnecessary incomplete calls is reduced, and the cost and efficiency of maintenance and operation of the mobile communication system can be reduced.

Hereinafter, the principle of the present invention will be described.
FIG. 1 is a block diagram showing the principle of a mobile station apparatus according to the present invention.
A first mobile station apparatus according to the present invention includes a radio interface unit 11 that interfaces with a radio zone formed by a base station, and a reception that is received via a radio interface unit 11 from a radio channel that constitutes the radio zone. The discriminating means 12 for demodulating the wave to extract transmission information and discriminating the normality of the transmission information, the downlink electric field measuring means 13 for measuring the received electric field strength of the received wave, and the normality discriminated by the discriminating means 12 According to a combination of the received electric field strength measured by the downlink electric field measuring means 13 with respect to a preset threshold value, an inquiry means 14 for transmitting a standby permission request to the base station via the wireless interface means 11, and a permission request The permission notification transmitted from the base station is monitored via the wireless interface means 11 according to the When a call is received, the standby control means 15 for starting standby in the wireless zone and a call that occurs in the standby state are monitored, and control information related to the call is transmitted to and received from the base station via the wireless interface means 11. And a connection control means 16 for providing a communication service.

FIG. 2 is a block diagram showing the principle of a base station apparatus according to the present invention.
A first base station apparatus according to the present invention is received from a radio channel constituting a radio zone in a base station apparatus that forms a radio zone in which the mobile station apparatus is located and configures a communication path via the radio zone. An upstream electric field strength measuring means 21 for monitoring the permission request to be received and measuring the received electric field strength of the permission request, and determining a magnitude relationship between the received electric field strength measured by the upstream electric field strength measuring means 21 and a preset threshold value And a permission / rejection response means 23 for transmitting a permission notification to the wireless channel when the former is larger than the latter.

The second base station apparatus according to the present invention is characterized in that, in the first base station apparatus described above, the permission / refusal response means 23 includes means for transmitting a failure notice to the radio channel when the former is smaller than the latter. And
The second mobile station apparatus according to the present invention includes a radio interface means 31 that interfaces with a radio zone formed by the base station that is configured by the second base station apparatus, and a radio channel that configures the radio zone. A receiving wave received via the wireless interface means 31 is demodulated to extract transmission information, a determining means 32 for determining the normality of the transmission information, and a downlink electric field measuring means 33 for measuring the received electric field strength of the received wave. And the base station via the wireless interface means 31 according to the combination of the normality determined by the determining means 32 and the received electric field strength measured by the downlink electric field measuring means 33 with respect to a preset threshold. The inquiry means 34 for transmitting the request and the permission notification and the disapproval notification transmitted from the base station in response to the permission request are wirelessly transmitted. A standby control means 35 that is monitored via the interface means 31 and starts waiting in the wireless zone when the permission notice is received and is out of service when a failure notice is received, and a call that occurs in the standby state And connection control means 36 for providing a communication service by transmitting and receiving control information related to the call to and from the base station via the wireless interface means 31.

  The third mobile station apparatus according to the present invention is an adjacent zone electric field strength measuring means for measuring the received electric field intensity of the radio zone adjacent to the in-zone zone in the standby state in the first or second mobile station apparatus described above. 41, the difference between the received electric field intensity measured by the adjacent zone electric field intensity measuring means 41 and the received electric field intensity measured by the downstream electric field measuring means and the preset lower limit value were compared, and the former exceeded the latter A zone transition monitoring means 42 for recognizing the adjacent wireless zone as a new in-zone zone, and the wireless interface means, the discrimination means and the standby control means include a new wireless zone recognized by the zone transition monitoring means 42. Individually having means for switching to a different zone and switching a radio channel to a radio channel constituting that zone. And it features.

According to the fourth mobile station apparatus of the present invention, in the first or second mobile station apparatus described above, the inquiry means waits at the base station via the radio interface means at a predetermined frequency in the standby state. Means for transmitting the permission request.
In a fifth mobile station apparatus according to the present invention, in the first or second mobile station apparatus described above, the inquiry means monitors the end of the communication service provided by the connection control means, and discriminates at the time of the end. Means for transmitting a standby permission request to the base station via the wireless interface means in accordance with the combination of the normality determined by the means and the received electric field strength measured by the downlink electric field measuring means with respect to a preset threshold value It is characterized by including.

  A sixth mobile station apparatus according to the present invention includes a state detection means 43 for detecting an out-of-service state after start-up or a state shifted from the inside of the zone to the out-of-service state in the first or second mobile station device described above, The inquiry means includes the normality determined by the determination means in the out-of-service state detected by the state detection means 51 or the state shifted to the out-of-range, and the received electric field intensity measured by the downlink electric field measuring means with respect to a preset threshold. And a means for transmitting a standby permission request to the base station via the wireless interface means in accordance with the combination.

In a seventh mobile station apparatus according to the present invention, in the first or second mobile station apparatus described above, the permission request transmitted by the inquiry means includes identification information indicating the permission request and identification information of the own station. It is characterized by comprising a plurality of frames.
In an eighth mobile station apparatus according to the present invention, in the first or second mobile station apparatus described above, the permission request transmitted by the inquiry means includes identification information indicating the permission request and identification information of the own station. It is characterized by comprising a preceding frame including the following frame and a subsequent frame indicating the identification information.

In the third base station apparatus according to the present invention, in the first or second base station apparatus described above, the permission / rejection response means 23 determines the magnitude relationship with the received electric field strength measured by the upstream electric field strength measuring means 21. The reference threshold value is characterized in that the mobile station apparatus located in the radio zone is higher than the received electric field strength that should be determined to shift out of the radio zone.
In the fourth base station apparatus according to the present invention, in the first or second base station apparatus described above, the permission / rejection response means 23 determines the magnitude relationship with the received electric field strength measured by the upstream electric field strength measurement means 21. The threshold value serving as a reference is characterized in that it is lower than the received electric field strength that should allow the mobile station apparatus to move to the area within the wireless zone.

The operation of the mobile station apparatus and base station apparatus described above is as follows.
In the first mobile station apparatus according to the present invention, the discriminating means 12 demodulates the received wave received via the radio interface means 11 from the radio channel constituting the radio zone where the own station is located, and extracts transmission information. At the same time, the normality of the transmission information is determined, and the downlink electric field measuring means 13 measures the received electric field strength of the received wave. The inquiry means 14 compares the received electric field intensity measured in this way with the threshold value, recognizes that the former exceeds the latter, and confirms the normality described above via the wireless interface means 11. A standby permission request is transmitted to the base station that forms the wireless zone described above. When the standby control unit 15 receives and recognizes the permission notification transmitted from the base station via the wireless interface unit 11 in response to such a permission request, the standby control unit 15 starts standby in the above-described wireless zone.

That is, the mobile station apparatus notifies the base station when it has confirmed that the transmission quality of the downlink radio channel has reached a standard that is satisfactory for providing the communication service, and the base station response to the notification Alternatively, waiting is started after confirming permission.
Therefore, the base station can be notified of the timing for confirming the transmission quality of the uplink radio channel to prompt the confirmation, and the connection control means 16 can detect the upper and lower radio channels prior to the start of standby. A communication service of good quality can be provided with high accuracy under the confirmation of transmission quality.

In the first base station apparatus according to the present invention, the uplink electric field strength measuring means 21 monitors the permission request transmitted to the radio channel from the first mobile station apparatus described above, and measures the received field strength of the permission request. The permission / refusal response means 23 determines the magnitude relationship between the received electric field strength and the threshold value, and transmits a permission notice to the wireless channel when the former is larger than the latter.
In other words, the base station apparatus notifies the mobile station facing through the radio channel that the transmission quality of the uplink radio channel has reached a standard to be satisfied in order to provide the communication service, and occurs in the mobile station. The transmission quality of the communication path related to the call to be made can be kept high with high accuracy.

In the second base station apparatus according to the present invention, in the first base station apparatus described above, the permission / response response means 23 receives the received electric field intensity when the received electric field intensity measured by the upstream electric field intensity measuring means 21 is smaller than the threshold value. A failure notification is transmitted to the wireless channel whose strength has been measured.
Therefore, it is promptly notified to the mobile station that has transmitted the permission request that the transmission quality of the uplink radio channel does not reach the standard that should be satisfied for providing the communication service.

In the second mobile station apparatus according to the present invention, the reference numeral “30” is attached, and the second mobile station apparatus includes constituent elements having the same names as the constituent elements of the first mobile station apparatus described above. The difference is in the following points.
The standby control unit 35 monitors the prohibition notification transmitted from the second base station apparatus described above in response to the permission request transmitted from the inquiry unit 34 together with the permission notification, and holds the standby when the prohibition notification is received. On the contrary, when a permission notice is received, standby is started.

Therefore, it is possible to hold the standby in response to the notification of failure, and to promptly start a standby trial in another wireless channel in the in-zone and a trial to move to a new zone in another wireless zone.
In the third mobile station apparatus according to the present invention, the adjacent zone electric field strength measuring means 41 measures the received electric field strength of the radio zone adjacent to the located zone, and the zone transition monitoring means 42 measures the received electric field strength and the downstream electric field. The difference between the received electric field strength of the in-zone zone measured by the means and the lower limit value are compared, and when the former exceeds the latter, the adjacent radio zone is recognized as a new in-zone zone. As with the first or second mobile station described above, the wireless interface unit, the determination unit, and the standby unit transmit a permission request and notify or prohibit the transmission of a permission request opposite to the base station that forms the new location zone. By receiving the notification, standby in a new zone is started or put on hold.

That is, since the transmission quality of the upper and lower radio channels is surely confirmed when moving to a new location zone, the transmission quality is adapted to the characteristics that the mobile station device is inherently operating while moving geographically. Is kept high.
In the fourth mobile station apparatus according to the present invention, since the inquiry means transmits a standby permission to the base station at a predetermined frequency during standby, the transmission characteristics of the upper and lower radio channels caused by movement and surrounding features The transmission quality is appropriately confirmed against the fluctuation, and an opportunity to select a radio zone and a radio channel to be awaited is obtained.

In the fifth mobile station apparatus according to the present invention, similar to the first or second mobile station apparatus described above, a permission request is transmitted prior to waiting for the current zone at the end of the talk, and the permission request is transmitted. On the other hand, the permission notice or the disapproval notice received from the base station is confirmed, and standby is started or suspended.
Therefore, the transmission quality should be appropriately confirmed and waited for the increase in the loss of the radio transmission path according to the movement during the call and the deterioration of the characteristics of the radio transmission path caused by the surrounding features at the end of the call. An opportunity to select a wireless zone or a wireless channel is obtained.

  In the sixth mobile station apparatus according to the present invention, the state detection means 51 detects an out-of-service state or a state that has shifted to the out-of-service state, and in any of these states, the inquiry means uses the first or second described above. Similar to the mobile station apparatus, a permission request is transmitted to a base station that is a candidate for a new location zone, and a permission notification or a disapproval notification received from the base station is confirmed in response to the permission request. Make a hold.

Therefore, when moving to the area, the transmission quality of the upper and lower wireless transmission paths is confirmed, and standby is started, so that the service quality is kept high.
In the seventh mobile station apparatus according to the present invention, the permission request transmitted by the inquiry means is composed of a plurality of frames including identification information indicating the permission request and identification information of the own station.

That is, since the permission request is transmitted in a redundant manner in a plurality of frames, the possibility of not being received at the receiving end of the base station due to the deterioration of the transmission quality of the uplink radio channel is reduced, and the start of standby is preceded. As a result, the accuracy with which the transmission quality can be confirmed can be improved, and it can be flexibly adapted to a digital transmission system having a high transmission rate.
In the eighth mobile station apparatus according to the present invention, the permission request transmitted by the inquiry means indicates a preceding frame including identification information indicating the permission request and identification information of the own station, and identification information of the own station. And subsequent frames that do not include identification information indicating a permission request.

In other words, since the permission request is transmitted after being divided into a plurality of frames, the possibility that the reception field strength cannot be measured at the receiving end of the base station due to the deterioration of the transmission quality of the uplink radio channel is reduced. The accuracy with which the transmission quality can be confirmed prior to the start can be improved, and it can be flexibly adapted to a digital transmission system having a high transmission rate.
In the third base station apparatus according to the present invention, the permission / rejection response means 23 moves the mobile station apparatus located in the radio zone out of service area with respect to the received electric field strength of the received wave received in the radio zone formed by the own station. Based on the magnitude relationship between the threshold value greater than the power value and the received electric field strength measured by the upstream electric field strength measuring means 21, the permission notice or the impossibility notice is transmitted.

Therefore, it is possible to accurately determine whether or not to allow the mobile station apparatus that is going to move out of service area while confirming the transmission quality of the upper and lower wireless channels in the wireless zone formed by itself.
In the fourth base station apparatus according to the present invention, the permission / rejection response means 23 includes a mobile station apparatus located in the vicinity of the radio zone with respect to the received electric field strength of the received wave received in the radio zone formed by the own station. Based on the magnitude relationship between the threshold value smaller than the value to be transferred and the received electric field strength measured by the upstream electric field strength measuring means 21, a permission notice or an impossible notice is transmitted.

Therefore, it is possible to accurately determine whether or not the mobile station apparatus intends to move to a new area while confirming the transmission quality of the upper and lower wireless channels in the wireless zone formed by the own station.
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 3 is an operation flowchart of the first embodiment of the present invention.

FIG. 4 is an operation flowchart of the first to eighth embodiments of the present invention.
The feature of the present embodiment is in the procedure of the process performed by the control unit 83 in the mobile station apparatus and the process performed by the base station control apparatus 56 in the base station apparatus, and the hardware configuration is the same as in the conventional example.
The correspondence relationship between each embodiment shown below and the block diagrams shown in FIGS. 1 and 2 is as follows: antenna 71 ₁ , duplexer 72, receiver 73 ₁ , demodulator 74, synthesizer 82, TDMA unit 75, The waveform shaping unit 79, the quadrature modulator 80, and the power amplifier 81 correspond to the radio interface units 11 and 31, the reception unit 731 and the control unit 83 correspond to the downlink electric field measurement units ₁₃ and 33, the control unit 83, and the display operation. Section 84, TDMA section 75, codec 76, receiver 77, and microphone 78 correspond to connection control means 16, 36, and control section 83 determines determination means 12, 32, inquiry means 14, 34, standby control means 15, 35, zone. Corresponding to the transition monitoring means 62 and the state detecting means 45, the antenna 71 ₂ , the receiving part 73 ₂ and the control part 83 are adjacent zone electric field strength measuring means 4. 1, the antennas 51 and 52, the amplifying device 53, the distribution synthesizers 54 _{1 to} 54 ₃ , the transmission / reception shelves 55 _{1 to} 55 ₃ correspond to the upstream electric field strength measuring means 21, and the base station control device 56 is a permission / rejection response means. 23.

The operation of the first embodiment of the present invention will be described below with reference to FIG. 3, FIG. 4, FIG. 16, and FIG.
In the mobile station apparatus, when the power is turned on, the control unit 83 escapes from the out-of-service state based on the same procedure as the conventional example (FIGS. 18 (1) to (12)), but before the transition to the standby state, FIG. Based on the procedure shown in FIG. Also, in the base station apparatus, when some control information is received from the mobile station, the contents are analyzed, and processing adapted to the result of the analysis is started (FIGS. 19 (1) to (3)). The processing based on the procedure shown in FIG. 6 is executed by the base station control device 56 as one aspect of such processing.

Therefore, in FIG. 3 and FIG. 4, the same processes as those in the conventional example are indicated by the same numbers, and the description thereof is omitted here.
In the mobile station apparatus, the control unit 83, the break away from the out-of-range state, waiting down fetches the received signal strength L3 measured by the receiver 73 ₁ compared with deterioration level L _th3 (FIG. 3 (13), (14) ) If the former falls below the latter, it quickly returns to the out-of-service state (FIG. 5 (a)), but if it exceeds, the “downward standby permission request” shown in FIG. The data is transmitted to the base station via the TDMA unit 75, the waveform shaping unit 79, the quadrature modulator 80, the power amplifier 81, the duplexer 72, and the antenna 71 ₁ (FIG. 3 (1)).

In the base station apparatus, the base station control apparatus 56 receives such a “downward standby permission request” and activates processing adapted to the request. In such processing, the base station control device 56 acquires the received electric field strength L3 from the transmission / reception unit that has received the above-mentioned “downward standby permission request” via the shelf control unit that supervises the transmission / reception unit (FIG. 4 (1)), the magnitude relation between the received electric field strength and the upstream waiting permission level L _th3 is determined (FIG. 4 (2)). Further, when the former exceeds the latter based on such a determination, the base station controller 56 generates an “uplink standby permission notification” shown in FIG. 6 and sends it to the downlink radio channel (FIG. 6). 4 (3)).

  On the other hand, in the mobile station apparatus, when the control unit 83 transmits the above-described “downlink standby permission request”, the output of the demodulator 74 via the TDMA unit 75 over a predetermined period (for example, several seconds). Is monitored to determine whether or not an “uplink standby permission notification” is received (FIG. 3 (2)), and if it is not received within that period, the above-described FIG. The following processing is repeated (FIG. 7 (a)). However, when the “uplink standby permission notification” is received within such a period, the control unit 83 shifts to the standby state (FIG. 3 (3), FIG. 7 (b)). In the following, the process performed by the control unit 83 in order to confirm that the received electric field strength at the receiving end of the base station is higher than a predetermined value facing the base station apparatus (FIG. 3 (1)). ˜ (3)) will be referred to as “uplink transmission quality confirmation processing”.

Thus, according to this embodiment, the mobile station apparatus confirms that the downlink received electric field strength exceeds the downlink standby degradation level, and that the uplink received field strength at the base station exceeds the uplink standby degradation level. Since the state shifts to the standby state, the large disparity in transmission quality between the upper and lower radio lines, which has occurred in the conventional example, is corrected.
In this embodiment, the length of the period from when the moving speed of the mobile station device is particularly high or from when the “downlink standby permission request” is transmitted to when the “uplink standby permission notification” is received. If is large, it may be determined again whether or not the received field strength of the downlink radio line is equal to or higher than the standby deterioration level at the time of transition to the standby state.

FIG. 8 is an operation flowchart of the second embodiment of the present invention.
In the figure, the same processes as those shown in FIG. 3 are given the same numbers, and the description thereof is omitted here.
The operation of the second embodiment of the present invention will be described below with reference to FIG. 4, FIG. 8, FIG. 16, and FIG.

The feature of the present embodiment is the following processing procedure performed by the control unit 83 in the standby state of the mobile station apparatus.
In the mobile station apparatus, the control unit 83 is given a threshold value indicating the upper limit of the fluctuation range of the received electric field strength, and in the standby state, the received electric field strength L3 of the notification signal received from the base station is the same as in the out-of-service state. Is repeatedly measured (FIG. 8 (13)). Further, the control unit 83 compares the variation in the received electric field strength measured in this way (difference from the received electric field strength measured in advance) with the above-described threshold (FIG. 8A). When the former falls below the latter, it stays in the standby state. However, if the value exceeds the opposite value, the control unit 83 compares the measured received electric field strength L3 with the downlink standby deterioration level _Lth3 (FIG. 8 (14)), and if the former value falls below the latter, If the mobile terminal shifts to the out-of-service state but exceeds the opposite, a “downward standby permission request” is transmitted to the base station (FIG. 8B).

In the base station apparatus, the base station control apparatus 56 measures the received field strength L3 of the request in response to such a “downlink waiting permission request” (FIG. 4 (1)), and also receives the received field strength and the upstream standby. The magnitude relationship with the permission level L _th3 is discriminated (FIG. 4 (2)), and when the former exceeds the latter, an “uplink standby permission notification” is generated and transmitted to the downlink radio channel (FIG. 4). (3)). Since the operation of such a base station apparatus is the same as that of the first embodiment described above, detailed description thereof is omitted here.

On the other hand, in the mobile station device, the control unit 83 receives the information received from the base station over a predetermined length period starting from the time when the above-mentioned “downlink waiting permission request” is transmitted as “uplink waiting permission notification”. (FIG. 8 (c)), and when the notification is received, the standby state is stopped (FIG. 8 (d)). However, when the “uplink standby permission notification” is not received during such a period, the control unit 83 quickly shifts to the out-of-service state. Thus, according to the present embodiment, the mobile station When the field strength is significantly reduced, it is checked whether the transmission quality of the uplink wireless transmission path has deteriorated significantly, and under that check, whether to stop in the standby state or, on the contrary, determine whether to move to the out-of-service state Therefore, the quality of the communication service is kept high.

In this embodiment, the base station apparatus transmits an “uplink standby permission notification” to the mobile station when the measured received electric field strength L3 exceeds the upstream standby permission level L _th3 . However, the present invention is not limited to such a configuration, and conversely, when the received electric field strength L falls below the upstream standby permission level L _th3 , an “upstream standby notifying notification” is transmitted to the mobile station, or the magnitude relationship between the two Regardless of the case, a notification directly indicating the magnitude relationship may be transmitted to the mobile station.

FIG. 9 is an operation flowchart of the third embodiment of the present invention.
In the figure, detailed description of the same processing as that shown in FIG. 3 is omitted.
The operation of the third embodiment of the present invention will be described below with reference to FIG. 4, FIG. 9, FIG. 16, and FIG.
The feature of the present embodiment is the following processing procedure performed by the control unit 83 of the mobile station apparatus when the mobile station apparatus in the standby state shifts to another radio zone.

In the mobile station apparatus, the control unit 83 compares the received electric field strength L of the broadcast information received from the base station apparatus with the out-of-service transition determination start level L _th (given in advance) (FIG. 9 (a)). ), the former with measures the maximum value L _max of the reception field strength of a received wave received from the radio zone adjacent via the receiving unit 73 ₂ in the case of below the latter, received field strength L and its maximum value Is compared with a predetermined threshold value δ. Furthermore, when such a difference exceeds the threshold value δ, the control unit 83 activates a zone transfer process described later (FIG. 9B).

The control unit 83, when the former compared to the transition determination start level L _th to received field intensity L and out of range described above falls below the latter, from the radio zone adjacent via the receiver 73 ₂ The maximum value L _max of the received electric field strength of the received wave received is measured, and the maximum value is compared with the lower limit value L _tn of the received electric field strength of the radio zone that can move to the area (FIG. 9 (c)). Further, the control unit 83 shifts to the out-of-service state when it recognizes that the former is lower than the latter through such comparison, but when it exceeds the opposite, it activates the following zone transfer process.

In the zone transfer process, the control unit 83 selects one of a single or a plurality of perch frequencies stored in the memory in advance (FIG. 18 (4), (8)) and sets it in the synthesizer 82 (FIG. 18). 9 (d)). The synthesizer 82 generates the perch frequency set in this way and supplies it to the receiving units 73 ₁ and 73 ₂ and the quadrature modulator 80. The receiving unit 73 ₂ receives the base station in the adjacent zone for the radio channel indicated by the perch frequency. The received electric field strength L1 of the notification signal received from is measured (FIG. 9 (e)). Receiver 73 ₁ provides a broadcast signal received in parallel to the measurement of the reception field strength above the demodulator 74, the demodulator produces a baseband signal by demodulating such notification signals. The TDMA unit 75 analyzes such a baseband signal based on a predetermined frame configuration and gives the contents to the control unit 83.

  The control unit 83 determines whether or not the notification signal is normally received by determining the normality of the content of the notification information given in this way in parallel with the measurement of the received electric field strength described above (see FIG. 9 (f)). Further, when the control unit 83 recognizes that the broadcast information has not been normally received by such a determination, the control unit 83 displays other perch channels stored in the memory with respect to other perch channels shown in FIGS. The process shown in f) is sequentially repeated (FIG. 9 (g)).

Further, the control unit 83, when the broadcast signal under such process is normally received through the receiver 73 ₂ measures the reception electric field intensity L0 of the broadcast signal again, the received field strength _Is compared with a preset downlink waiting permission level L _th (FIG. 9 (h)). When the control unit 83 recognizes that the former is lower than the latter under such a comparison, the received electric field strength is the same as when the notification signal is not normally received under the perch frequency. 9 (d) to (f) are sequentially repeated for the subsequent perch frequencies stored in the memory in the descending order (FIG. 9 (g)). ) To (3) based on the same procedure as shown in (3), after transmitting and receiving the `` down standby permission request '' and the `` standby permission notification '' facing the base station apparatus, the state shifts to the standby state. According to this, when a mobile station apparatus in a standby state moves or is moving to an adjacent wireless zone, the transmission quality of the upper and lower wireless transmission paths formed between the base stations forming the wireless zone is large. Make sure that there is no disparity. Since migration is performed, good transmission quality is ensured even in the destination radio zone.

FIG. 10 is an operation flowchart of the fourth embodiment of the present invention.
In the figure, the same processes as those shown in FIG. 8 are given the same numbers, and the description thereof is omitted here.
The operation of the fourth embodiment of the present invention will be described below with reference to FIG. 4, FIG. 10, FIG. 16, and FIG.

The feature of the present embodiment is the following process performed by the control unit 83 in order to activate the “uplink transmission quality confirmation process” shown in FIG.
In the mobile station apparatus, the control unit 83 activates a timer having a predetermined time width in the standby state (FIG. 10 (1)), and from the base station over a period until the count value of the timer reaches the final value. The received electric field strength of the received notification signal is measured (FIG. 10 (2)). Further, the control unit 83 starts the uplink transmission quality confirmation process at the time when such a period elapses, and once the process is completed, the above-described timer activation and reception field strength measurement are performed again (FIG. 10 (1)). , (2)), and so on.

The uplink transmission quality confirmation process and the operations of the mobile station apparatus and base station apparatus corresponding to the process are the same as those in the embodiment shown in FIG.
As described above, according to the present embodiment, the mobile station apparatus does not shift to another radio zone and does not cause a significant deterioration in transmission quality in the downlink radio transmission path. It is confirmed whether or not the received electric field strength at the receiving end is _{equal to} or higher than the upstream standby permission level L _th3, and it is determined whether to stop in the standby state or shift to the out-of-service state according to the result. Therefore, the occurrence of incomplete calls and the deterioration of the call quality due to the deterioration of the transmission quality of the uplink radio transmission path can be suppressed more efficiently.

FIG. 11 is an operation flowchart of the fifth embodiment of the present invention.
In the figure, the same processes as those shown in FIG. 9 are given the same numbers, and the description thereof is omitted here.
The operation of the fifth embodiment of the present invention will be described below with reference to FIG. 4, FIG. 11, FIG. 16, and FIG.

The feature of the present embodiment lies in the startup procedure of the standby channel search process similar to the zone shift process shown in FIG. 9 and the difference between these processes.
In the mobile station apparatus, the control unit 83 completes the call based on a predetermined processing procedure (the description is omitted here because it is not directly related to the present application) among outgoing calls or incoming calls generated in the local station. The end call is monitored for the received call, and the standby channel search process described above is started when the end call is recognized.

  The difference between the standby channel search process and the zone shift process described above is set in the synthesizer 82 by the control unit 83 (FIG. 11 (d ')), and the received electric field strength is large when the perch frequency shifts to the area. The contents of each logic executed in the latter half of the processing are the same as those shown in FIG. Therefore, detailed description of these processes is omitted here. As described above, according to the present embodiment, the control channel that the mobile station apparatus should wait for after the end of the call is surely selected so that there is no great difference in the transmission quality between the upper and lower sides. Generation of a completed call and degradation of transmission quality can be avoided with high accuracy.

FIG. 12 is an operation flowchart of the sixth to eighth embodiments of the present invention.
The operation of the sixth embodiment of the present invention will be described below with reference to FIG. 4, FIG. 12, FIG. 16, and FIG.
The difference between the present embodiment and the conventional example is that the control unit 83 performs the uplink transmission quality confirmation process after completion of the entrance area process shown in FIG. 18 (after determining the radio channel to be waited in after the power is turned on or out of service area). In the process of confirming that there is no large disparity in transmission quality between the upper and lower wireless transmission paths based on the processing, the base station controller 56 makes a transition to the standby state, The threshold value of the received electric field strength is determined based on the “upstream standby permission level” set to a value higher than the “upstream standby degradation level”. Since the procedure of the uplink transmission quality confirmation process is the same as that in each of the embodiments described above, detailed description thereof is omitted here.

As described above, according to the present embodiment, it is necessary to confirm that there is no large difference in transmission quality between the upper and lower wireless transmission paths in the process of moving into the area after turning on the power or moving out of the area. The channel is established.
The operation of the seventh embodiment of the present invention will be described below with reference to FIG. 4, FIG. 12, FIG. 16, and FIG.

The difference between the present embodiment and the sixth embodiment described above is that when the mobile station apparatus completes the entrance area processing and shifts to the standby state, and in the standby transmission quality confirmation process in the standby state. There are a format of “uplink standby permission request” transmitted to the base station and a process performed by the base station controller 56 in response to the request.
In the mobile station apparatus, the control unit 83 indicates a mobile station number indicating its own station (transmission source) and “uplink standby permission request” as shown in FIG. An "uplink standby permission request" consisting of identification information is first transmitted, and then a dummy burst that does not include such identification information and includes only the mobile station number is repeated a predetermined number of times (here, "n -1 ")).

On the other hand, in the base station apparatus, the base station control apparatus 56 sequentially takes in the received electric field strengths E _{1 to} E _n of these “uplink standby permission requests” and dummy bursts, and takes the average as shown in FIG. The “upstream standby deterioration level” and the “upstream standby permission level” are determined.
That is, since the received electric field strength can be obtained with high accuracy, a digital mobile communication system in which a burst signal is wirelessly transmitted so that the transmission speed is particularly high and a sufficient margin cannot be secured for the response time of the transmission / reception unit of the base station. Then, even when a part of the above-described dummy burst is not received due to fluctuations in uplink propagation characteristics, when the first `` uplink standby permission request '' is normally received by the base station, Transmission quality is obtained with high accuracy, and the upper and lower transmission quality is ensured to a high value.

The operation of the eighth embodiment of the present invention will be described below with reference to FIG. 4, FIG. 12, FIG. 16, and FIG.
The difference between the present embodiment and the seventh embodiment described above lies in the configuration of the “upward standby permission request”.
In the mobile station apparatus, the control unit 83 indicates a mobile station number indicating its own station (transmission source) and an “uplink standby permission request” as shown in FIG. A plurality of “upstream standby permission requests” made up of identification information are sent at regular intervals over a plurality of times (here, “n” for simplicity).

On the other hand, in the base station apparatus, the base station control apparatus 56 sequentially captures the received electric field strengths of these “uplink standby permission requests” and takes the average while confirming that the mobile station numbers are the same. The size of the “standby permission level” is determined.
As described above, according to the present embodiment, the base station can accurately obtain the received electric field strength for a plurality of “uplink waiting permission requests” received from the same mobile station apparatus. Therefore, especially in a digital mobile communication system in which a burst signal is transmitted wirelessly and the burst signal is short enough that a sufficient margin cannot be secured for the response time of the base station transceiver unit, it is caused by fluctuations in uplink propagation characteristics. Thus, even if any of the above-mentioned “uplink waiting permission requests” is not received, the transmission quality is accurately obtained, and the upper and lower transmission quality is ensured to a high value.

  In each of the above-described embodiments, the base station uses a criterion for determining whether or not to send an “uplink standby permission notification” or the like based on a fixed threshold value determined in advance for the received electric field strength. For example, the base station side selects and sets either “uplink standby permission level” or “uplink standby deterioration level” based on the presence / absence of the area managed for each mobile station. Alternatively, the same setting may be performed based on the presence / absence of the area of the mobile station transmitted by each mobile station together with the “uplink waiting permission request”.

  In each of the embodiments described above, the present invention is applied to a digital mobile communication system. However, the present invention is not limited to such a system. For example, the received electric field of an uplink radio channel (transmission path) in a base station. If the mobile station that is to perform standby acceptance / rejection determination based on the strength can be reliably identified and the increase in the traffic volume of the upper and lower wireless channels associated with such permission / rejection determination is allowed, the applied wireless channel configuration (Including the configuration and number of control channels), access control scheme, zone configuration, transmission scheme (including transmission rate and modulation / demodulation scheme), transmission path coding scheme, etc. The present invention is not limited to those forming a mobile communication network, and can be similarly applied to a private mobile communication system using a large zone system.

  Further, in each of the above-described embodiments, in order to send and receive “uplink standby permission request”, “standby permission notification”, and “standby impossible notification” between the mobile station apparatus and the base station apparatus, When the processing amount related to the communication control of these wireless channels increases to a level that cannot be ignored with respect to the processing amount of the system, for example, a wireless transmission path that performs such transmission and reception and a processing device that controls the wireless transmission include It can be configured based on a load balancing scheme.

It is a principle block diagram of the mobile station apparatus concerning this invention. It is a principle block diagram of the base station apparatus concerning this invention. It is an operation | movement flowchart of 1st Example of this invention. It is an operation | movement flowchart of the 1st thru | or 8th Example of this invention. It is a figure which shows the structure of a downstream waiting permission request | requirement. It is a figure which shows the structure of the uplink direction waiting permission notification. It is a figure explaining the operation | movement of a present Example. It is an operation | movement flowchart of the 2nd Example of this invention. It is an operation | movement flowchart of the 3rd Example of this invention. It is an operation | movement flowchart of the 4th Example of this invention. It is an operation | movement flowchart of the 5th Example of this invention. It is an operation | movement flowchart of the 6th thru | or 8th Example of this invention. It is a figure which shows the structure of a downstream waiting permission request and a dummy burst. It is a figure explaining a transmission order. It is a figure which shows the continuous transmission of a downstream waiting request. It is a figure which shows the structural example of the conventional base station apparatus. It is a figure which shows the structural example of the conventional mobile station apparatus. 6 is an operation flowchart (1) of a conventional base station. 5 is an operation flowchart (2) of a conventional mobile station. It is an operation | movement flowchart of the conventional base station apparatus. It is a figure explaining the subject of a prior art example.

Explanation of symbols

11, 31 Wireless interface means 12, 32 Discriminating means 13, 33 Downward electric field measuring means 14, 34 Inquiry means 15, 35 Standby control means 16, 36 Connection control means 21 Upward electric field strength measuring means 23 Acceptance / response response means 41 Adjacent zone electric field strength Measurement means 42 Zone transition monitoring means 43 State detection means 51, 52, 71 Antenna 53 Amplifier 54 Distribution combiner 55 Transmission / reception shelf 56 Base station control unit 57 PCM interface unit 58 Synchronous terminal unit 59 Transmission / reception unit 60 Shelf control unit 72 Transmission / reception Duplexer 73 Receiving unit 74 Demodulator 75 TDMA unit 76 Codec 77 Receiver 78 Microphone 79 Waveform shaping unit 80 Orthogonal modulator 81 Power amplifier 82 Synthesizer 83 Control unit 84 Display operation unit

Claims (3)

In a base station device that forms a wireless zone and provides communication services to mobile station devices located in the wireless zone,
Upstream field strength measuring means for measuring the received field strength of the signal received from the mobile station device;
When the measured received electric field strength is equal to or greater than the threshold, a notification indicating that is sent to the mobile station device, and when the measured received electric field strength is smaller than the threshold, the mobile station device A base station apparatus comprising: response means for transmitting an impossibility notification indicating the effect. The base station apparatus according to claim 1,
The threshold is
The base station apparatus the mobile station apparatus may be higher than the reception electric field intensity can be determined to have migrated from the radio zone to out-of-service. The base station apparatus according to claim 1,
The threshold is
The base station and wherein the lower reception field strength capable allow migration of the mobile station device with respect to distance of radio zones.

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