JPH06152506A - Mobile communication control system - Google Patents

Abstract

PURPOSE:To reduce a recycled transmission, and to improve a control line efficiency by transmitting a response signal when the matching degree of a received signal format with the signal format set at its own station is larger than a prescribed threshold value. CONSTITUTION:In a mobile station, an identification number detecting circuit 17 for call detects an identification number for calling from outgoing information. An identification number memory 18 for calling its own station stores an identification number for calling its own station. A comparing and matching degree detecting circuit 19 compares the detected identification number for calling with the identification number for calling its own station, and detects the matching degree. A threshold value comparing circuit 21 judges whether the matching degree detected by the comparing and matching degree detecting circuit 19 is larger or smaller than the prescribed threshold value set by a threshold value setting circuit 20. When the matching degree is larger than the threshold value, an incoming information preparing circuit 11 prepares incoming information such as the incoming call response signal, and transmits it to a base station.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control system in a wireless section between a base station and a mobile station in a mobile communication system. In particular, the present invention relates to transmission control of a response signal corresponding to a control signal received from a partner station at a base station or a mobile station and acceptance control for the response signal.

[0002]

2. Description of the Related Art As a method of performing various controls between a mobile communication base station and a mobile station, the contents of the signal format forming each control signal received by the base station and the mobile station are
If the content of the signal format predicted to be set or received in the local station is exactly the same, the content of each control signal is judged and the response signal corresponding to the control signal is transmitted. .

From among a number of control items in mobile communication, a conventional technique will be described with reference to the drawings with regard to incoming call control of a mobile station as an example of a mobile station operation and inter-zone channel switching control as an example of a base station operation. explain.

FIG. 5 shows a conventional mobile unit operation and an incoming call control sequence. The operation will be described.

The base station transmits an incoming signal including the calling identifier to the mobile station. The mobile station detects the calling identification number from the received incoming signal and compares it with the calling identification number of its own station. As a result, if they match completely, it sends an incoming response signal which is a response signal to the base station. The base station receiving the incoming call response signal selects a channel, assigns a channel to the mobile station, and is in a call. If the calling identification numbers do not completely match, the mobile station does not return the incoming call response signal, and the base station recycles the incoming call signal to the mobile station a predetermined number of times.

FIG. 6 shows a conventional base station operation and inter-zone channel switching control sequence.

The mobile station reports from the radio status report 2 signal that the reception level of the perch channel commonly used for the control channels of the peripheral zones exceeds the speech channel level. The base station that has received the radio condition report 2 signal confirms whether or not the reported perch channel number exists in the peripheral zone of the busy zone, and if it confirms that it exists, it is called a radio condition report confirmation. A response signal is transmitted, and the process proceeds to the subsequent sequence to execute channel switching. If the reported perch channel number does not exist in the surrounding zone, the radio status report 2 signal is retransmitted until the response signal is received, like the mobile station's incoming signal, and the sequence stops at the base station,
Channel switching is not performed either.

[0008]

When a control signal is transmitted and received in a wireless section between a base station and a mobile station, the conventional base station and the mobile station have the contents of the signal format constituting each received control signal as their own station. If the contents of each received control signal cannot be judged and the response signal is not transmitted unless the contents of the signal format predicted to be set or received in S. In a wireless section where quality deteriorates and many signal errors occur, there is a problem that the control channel occupies a long time and control takes time. That is, when a signal error occurs, the signal format forming each control signal does not completely match, the content of each received control signal cannot be determined, and the response signal is not returned.
The recycling transmission of each control signal increases. In particular, in the case of incoming control of a mobile station, while the base station is recycling the incoming signal, the incoming control line is exclusively used in the fixed network line and the wireless section, and the incoming call is made to the mobile device performing ultra-discontinuous reception. Since the interval between incoming calls of the base station is long, the connection time required for an incoming call becomes long. In the case of inter-zone channel switching control, while the mobile device recycles the radio condition report 2 signal, the quality of the communication channel deteriorates, and in the worst case, squelch disconnection occurs before channel switching is performed. There was a problem.

The present invention solves the above problems and provides a mobile communication control system in which the number of recycle transmissions is reduced, the control line occupation time and the control processing time are shortened, and the control line use efficiency is improved. With the goal.

[0010]

The first aspect of the present invention is to:
A mobile communication control method in which a plurality of mobile stations and a base station are connected by a wireless line to transmit and receive control signals, and the mobile station or the base station is a mobile station or a base station, the format content of the received control signal and its own station. A mobile communication control system comprising a comparing means for comparing the signal format contents predicted to be set or received, and a controlling means for sending a response signal corresponding to the control signal to the partner station according to the comparison result. In the above, the control means of the mobile station or the base station, as a result of the comparison between the signal format contents constituting the received control signal and the signal format contents predicted to be set or received in the own station, the degree of coincidence is If it is larger than a predetermined threshold value, the response corresponding to the signal format set in the local station or predicted to be received is received. Characterized in that it comprises a means for transmitting a signal.

At this time, it is preferable that the base station or mobile station that has received the plurality of response signals includes means for accepting only the received signals that match the transmitted control signals and discarding the signals that do not match.

[0012] A second aspect of the present invention is a mobile communication control system in which a plurality of mobile stations and a base station are connected by a wireless line to transmit and receive control signals, and the mobile station or the base station. Is a comparison means for comparing the format content of the received control signal with the signal format content set or predicted by the own station, and a control means for sending a response signal corresponding to the control signal to the partner station according to the comparison result. In the mobile communication control system, the control means of the mobile station or the base station compares the signal format contents forming the received control signal with the signal format contents predicted to be set or received by the own station. As a result, when the degree of coincidence is larger than a predetermined threshold value, the received signal format content is set or converted into the predicted signal format content. , Characterized in that it comprises a means for transmitting a response signal corresponding to the signal format after converting.

[0013]

According to the present invention, the content of the signal format that constitutes each control signal that is erroneously received in bit units by the base station or the mobile station and the content of the signal format that is predicted to be set or received by the local station are described. The degree of coincidence is obtained by comparison, and if the degree of coincidence is larger than a predetermined threshold value even if the degree of coincidence is not strict, each received control content is judged and a response signal is controlled to be transmitted. As a result, even if the signal format contents are not exactly the same, the received control contents are judged and the response signal is sent if the control contents are larger than the threshold value. Can be reduced.

The present invention deals with an error that cannot be corrected by the conventional error correction, and the erroneously received control signal here cannot be corrected by the error correction code used conventionally. Control signal.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. In the following description of the embodiment, among a number of control items in mobile communication, the incoming call control of a mobile station is used as an example of a mobile station operation, and the inter-zone channel switching control is used as an example of a base station operation. As described below.

(Embodiment 1) FIG. 1 is a diagram showing a configuration of a mobile station according to incoming call control of a mobile station according to Embodiment 1 of the present invention. This mobile station includes a generation circuit 11 that generates uplink information to be transmitted to a base station, an encoding circuit 12 that encodes the generated uplink information, a modulation circuit 13 that modulates the encoded signal, and an antenna of the mobile station. A transmission / reception distributor 14, a demodulation circuit 15 for demodulating a received signal, a decoding circuit 16 for decoding the demodulated signal to generate downlink information, and a calling identification number detection for detecting a calling identification number from the downlink information. Circuit 17,
Self-station calling identification number memory 18 for storing self-station calling identification number, matching degree detection circuit 19 for comparing the detected calling identification number and self-station calling identification number, and detecting the matching degree A threshold setting circuit 20 in which a degree threshold is set, and a threshold comparing circuit 21 for determining whether or not the degree of coincidence is larger than the threshold.

Here, the feature of this embodiment is that
The degree of coincidence detected by the comparison and coincidence degree detection circuit 19 is compared with the threshold value set in the threshold value setting circuit 20,
When the degree of coincidence is larger than the threshold value, the uplink information generating circuit 11 is controlled to control the incoming call response signal, which is a response signal to the incoming call signal, to the base station.

Each circuit will be specifically described.

Upon receiving the information that the degree of coincidence is greater than the threshold value from the threshold value comparison circuit 21, the upstream information generation circuit 11 generates an incoming call response signal, and the encoding circuit 1
Transfer to 2. The encoding circuit 12 is the upstream information generation circuit 1
The incoming call response signal generated in 1 and other upstream information signals are encoded. The modulation circuit 13 modulates the uplink information signal coded by the coding circuit 12. Transmission and reception distributor 14
Distributes the upstream information signal from the modulation circuit 13 to the antenna and the downstream information signal from the antenna to the demodulation circuit 15. The demodulation circuit 15 demodulates the downlink modulation signal distributed by the transmission / reception distributor 14. The decoding circuit 16 decodes the coded signal demodulated by the demodulation circuit 15,
It is output to the calling identification number detection circuit 17. The decoding circuit 16 performs error correction using an error correction code added to the control signal transmitted from the base station.

The calling identification number detecting circuit 17 detects the calling identification number from each of the downlink information signals decoded by the decoding circuit 16, and outputs the detected calling identification number to the comparing and matching degree detecting circuit 19. . The own-station calling identification number memory 18 stores the own-station calling identification number necessary for comparing the calling identification numbers and detecting the matching degree, and outputs it to the comparison and matching degree detection circuit 19. . The comparing and matching degree detecting circuit 19 compares the calling identifying number detected by the calling identifying number detecting circuit 17 with the calling identifying number of the own station, and detects the matching degree.
The degree of coincidence is output to the threshold comparison circuit 21. The threshold value setting circuit 20 has a preset threshold value for the degree of coincidence. The threshold comparison circuit 21
It is judged whether the degree of coincidence detected by the comparison and coincidence degree detection circuit 19 is larger or smaller than the threshold value set in the threshold value setting circuit 20, and if the degree of coincidence is larger than the threshold value, upstream information is generated. The circuit 11 is controlled to generate uplink information such as an incoming call response signal, perform encoding and modulation, and send the encoded information to the base station.

In this mobile station, the calling identification number of the incoming signal from the base station detected by the calling identification number detection circuit 17 is compared with the calling identification number of its own station, and the degree of coincidence is a threshold value. When it is higher than the threshold value set in the setting circuit 20, it is controlled so that an incoming call response signal which is a response signal to the incoming call signal is generated and sent to the base station.

FIG. 2 is a flowchart showing the operation of the mobile station in the incoming control of the mobile station of this embodiment.

In FIG. 2, when the calling identification number is received in the incoming call waiting state, the received calling identification number is compared with the calling identification number of the own station, and the matching degree is set to a preset threshold value. Determine if it is greater than. Considering that the present invention deals with an error that cannot be corrected by the error correction, the threshold value to be set is, for example, that the calling identification number is composed of 24 bits of the mobile unit identifier. To 1 bit error. When the degree of coincidence is larger than the threshold value, the mobile station transmits an incoming response signal which is a response signal to the base station. The base station, which has received the incoming call response signal, allocates channels to establish a call connection state.

If the degree of coincidence is smaller than the threshold value,
The mobile station does not return the incoming call response signal as in the conventional case, the base station does not return the incoming call response signal, and the base station continues the recycling transmission of the incoming call signal.

In the present embodiment, all mobile stations judged to be larger than the threshold value return the incoming call response signal, so that depending on the area, the incoming call response signals are transmitted from a plurality of mobile stations to one base station. There are cases. However, the probability that there are two or more target mobile stations in the same location registration area and the same intermittent reception group is very low, so there is no effect such as an increase in upstream traffic or a decrease in subscriber capacity.

The base station compares the transmitted calling identification number with the mobile unit identification number in the received incoming call response signal, accepts only the completely matched incoming call response signal, and tentatively does not match the incoming call response signal. Even if a message is received, it can be prevented from being erroneously connected by discarding it. Since the base station stores the identification number of the mobile device that sent the incoming signal, it can discard the incoming response signal from the wrong mobile device.

(Embodiment 2) FIG. 3 is a diagram showing a configuration of a base station in inter-zone channel switching control.

This base station has a configuration related to inter-zone channel switching control, and includes a downlink information generating circuit 31 for generating downlink information such as confirmation of a radio status report to a mobile station, an encoding circuit 32 for encoding this downlink information, A modulation circuit 33 that modulates the encoded downlink information signal, a transmission / reception distributor 34 that couples the downlink information signal from the modulation circuit 33 to an antenna, and distributes the uplink information signal from the antenna to the demodulation circuit, a transmission / reception distributor 34.
A demodulation circuit 35 for demodulating the uplink information signal from the demodulator, a decoding circuit 36 for decoding the uplink information from the demodulated uplink information signal,
A perch channel number detection circuit 37 for detecting a perch channel number from the decoded upstream information, a per-zone perch channel number memory 38 for storing perch channel numbers for each zone, and a mobile station detected by the perch channel number detection circuit 37 A comparison and matching degree detection circuit 39 that compares the perch channel number and the perch channel number for each zone and detects the degree of matching, a threshold setting circuit 40 that sets a threshold value for the degree of matching, comparison and detection of the degree of matching. A threshold value comparison circuit 41 that compares the degree of coincidence detected by the circuit 39 with a threshold value to determine whether the degree of coincidence is larger than the threshold value. The perch channel number that was received when it was judged to be larger was stored in the perch channel memory number memory for each zone. Correct the Mari tree channel number comprises a perch channel number correcting circuit 42 to be output to the downlink information generating circuit 31.

In this base station, when the radio condition report 2 signal is received, the perch channel number is detected from the radio condition report 2 signal that has passed through the demodulation circuit 35 and the decoding circuit 36, and the perch channel number for each zone possessed by the own station. The degree of coincidence is obtained by comparing with the memory, and if the degree of coincidence is larger than a preset threshold value, the downlink information generation circuit 31 generates a radio status report confirmation signal which is a response signal, and encodes it. It transmits to the mobile station via the circuit 32 and the modulation circuit 33.

FIG. 4 is a flowchart showing the operation of the base station in the inter-zone channel switching control of this embodiment.

In this embodiment, the threshold value for comparison is preset in the base station. The threshold value to be set is about 1 bit error because the perch channel number is composed of 8 bits.

When the reception level from the peripheral zone becomes higher than the reception level of the communication zone during communication, the mobile station informs the base station by the radio status report 2 signal. The base station which has received the radio condition report 2 signal from the mobile station detects the perch channel number from the radio condition report 2 signal, and the contents stored in the per-zone perch channel number memory 38 owned by the base station. A comparison is made to find the degree of agreement. If the perch channel numbers completely match, a radio status report confirmation signal for the perch channel number is transmitted to the mobile station, and then the channel switching procedure is performed. If the perch channel number is received by mistake and there is no perfect match, the degree of matching is calculated,
Compare with a preset threshold. As a result of the comparison, if the degree of coincidence is larger than the threshold value, the base station determines that the perch channel number received by mistake is the perch channel number in the peripheral zone of the communication zone, and the base station receives the perch channel number by mistake. To the perch channel number of the zone around the communication zone. Then, the radio status report confirmation signal for the corrected perch channel number is transmitted to the mobile station, and then the normal channel switching procedure is executed. If the degree of coincidence is smaller than the threshold value, the operation is stopped at that point and the radio condition report 2 is performed again.
The base station does not operate until it receives a signal.

In the above-described first and second embodiments,
Among the many control items in mobile communication, the incoming call control operation of the mobile station is described as an example of the mobile station operation, and the inter-zone channel switching control operation is described as an example of the base station operation.
The present invention can be applied to other control items in mobile communication. For example, control of a color code or the like forming a radio channel designation signal in transmission control of a mobile device or a switching destination radio channel designation signal in channel switching control can be cited.

[0034]

As described above, according to the present invention,
Even in the wireless section where the line quality between the base station and mobile station deteriorates and many signal errors occur, the response signal is transmitted by judging the received control signal content with a small number of recycling transmissions. It is possible to control.

Therefore, the occupation time of the control line due to the recycle transmission can be reduced, the control processing time can be shortened, and the mobile communication control can be performed with high efficiency of use of the control line.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a mobile station according to incoming call control of a mobile station according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the mobile station according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a base station for channel switching between zones according to a second embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the base station of the second embodiment of the present invention.

FIG. 5 is a diagram showing a conventional incoming call control sequence.

FIG. 6 is a diagram showing a conventional inter-zone channel switching control sequence.

[Explanation of symbols]

 11 Upstream information generation circuit 12, 32 Encoding circuit 13, 33 Modulation circuit 14, 34 Transmission / reception distributor 15, 35 Demodulation circuit 16, 36 Decoding circuit 17 Call identification number detection circuit 18 Self-station identification number memory 19, 39 Comparison and coincidence detection circuit 20, 40 Threshold setting circuit 21, 41 Threshold comparison circuit 31 Downstream information generation circuit 37 Perch channel number detection circuit 38 Perch channel number memory for each zone 42 Perch channel number correction circuit

Claims (3)

[Claims] 1. A mobile communication control system in which a plurality of mobile stations and a base station are connected to each other by a wireless line and a control signal is transmitted and received, wherein the mobile station or the base station receives the control signal. Comparing means for comparing the format content with the signal format content predicted to be set or received in the own station, and control means for sending a response signal corresponding to the control signal to the partner station according to the comparison result In the mobile communication control method described above, the control means of the mobile station or the base station compares the signal format contents constituting the received control signal with the signal format contents predicted to be set or received by the own station. , If the degree of coincidence is larger than a predetermined threshold value, the signal format predicted to be set or received by the local station is received. The mobile communication control method, characterized in that it comprises means for transmitting a response signal for response. 2. The mobile communication control according to claim 1, wherein the base station or the mobile station that has received the plurality of response signals includes a unit that accepts only the received signals that match the transmitted control signals and discards the signals that do not match. method. 3. A mobile communication control system in which a plurality of mobile stations and a base station are connected to each other by a wireless line to transmit and receive control signals, wherein the mobile station or the base station receives the control signals. In a mobile communication control system comprising a comparison means for comparing the format content with the signal format content set or predicted by the own station, and a control means for sending a response signal corresponding to the control signal to the partner station according to the comparison result. The control means of the mobile station or the base station compares the signal format content forming the received control signal with the signal format content predicted to be set or received by the local station, and the degree of coincidence is predetermined. If it is larger than the threshold value of, the received signal format content is converted into the set or predicted signal format content, and the signal after conversion is converted. The mobile communication control method, characterized in that it comprises means for transmitting a response signal corresponding to the format.