JP5603976B1 - Communication quality control method, signal processing apparatus, and communication quality control program - Google Patents

Abstract

Provided are a communication quality control method, a signal processing device, and a communication quality control program capable of appropriately collecting radio wave data even when communication quality varies between a radio base station and a signal processing device. .
A signal processing device receives a radio wave and receives a packet according to compressed radio wave data via a communication line from a radio base station that operates based on setting information, and gives the packet to the packet A monitoring unit that monitors the communication quality on the communication line based on the identification number, a threshold determination unit that determines whether or not the communication quality is outside the allowable range, and a communication quality that is outside the allowable range In this case, a control unit that changes the setting information and a transmission unit that transmits the changed setting information to the radio base station are provided.
[Selection] Figure 1

Description

  The present invention relates to a communication quality control method, a signal processing device, and a communication quality control program.

  As a system for monitoring illegal radio stations by collecting radio wave data, there is a Durus system (DEURAS-D) (see Non-Patent Document 1). Patent Document 1 discloses an illegal radio wave source search system that monitors illegal radio waves using a wireless terminal.

JP 2007-312078 A

"Remote orientation measuring equipment (DEURAS-D)", [online], Ministry of Internal Affairs and Communications, [Search June 13, 2013], Internet <http://www.tele.soumu.go.jp/j/adm/ monitoring / moni / type / deurasys / deuras_d.htm>

  However, the system disclosed in Non-Patent Document 1 is based on the premise that communication quality between a radio base station that receives radio waves and a signal processing device that performs signal processing on the radio waves does not vary. For this reason, the system disclosed in Non-Patent Document 1 requires a dedicated high-speed communication line between the radio base station and the signal processing device. That is, the system disclosed in Non-Patent Document 1 has a problem that radio wave data cannot be collected properly when the communication quality varies between the radio base station and the signal processing device. The system disclosed in Patent Document 1 is the same.

  The present invention has been made in view of the above points, and a communication quality control method capable of appropriately collecting radio wave data even if the communication quality varies between a radio base station and a signal processing device, It is an object to provide a signal processing device and a communication quality control program.

One aspect of the present invention is a communication quality control method in a communication quality control system including a radio base station that receives radio waves and operates based on setting information, and a signal processing device, the monitoring unit of the signal processing device Monitoring the communication quality in the communication line based on the identification number given to the packet according to the compressed radio wave data received from the radio base station via the communication line, and the signal processing device A step of determining whether or not the communication quality is out of an allowable range based on the threshold, and when the control unit of the signal processing device is out of the allowable range, as the setting information, and changing the compression ratio of the packet corresponding to the radio data transmission unit of the signal processing device transmits the setting information has been changed to the radio base station step If, have a, the control unit is a communication quality control method characterized by increasing the compression ratio of the packet corresponding to the radio data by radio waves received by the low priority frequency.
One aspect of the present invention is a communication quality control method in a communication quality control system including a radio base station that receives radio waves and operates based on setting information, and a signal processing device, the monitoring unit of the signal processing device Monitoring the communication quality in the communication line based on the identification number given to the packet according to the compressed radio wave data received from the radio base station via the communication line, and the signal processing device A step of determining whether or not the communication quality is out of an allowable range based on the threshold, and when the control unit of the signal processing device is out of the allowable range, As setting information, a step of changing a packet transmission timing according to the radio wave data, and a transmission unit of the signal processing device transmits the changed setting information to the radio base station. And the control unit includes a packet corresponding to the radio wave data so as to relatively increase the frequency of transmission of the packet corresponding to the radio wave data by the radio wave received at a high priority frequency. It is a communication quality control method characterized by changing the transmission timing of.

In one aspect of the present invention, the monitoring unit monitors at least one of packet loss and delay according to the radio wave data as the communication quality, and the control unit has the communication quality outside an allowable range. If, as the packet corresponding to the higher priority the radio data is transmitted with priority, a communication quality control method characterized by changing the setting information.

According to one aspect of the present invention, a reception unit that receives a packet according to compressed radio wave data via a communication line from a radio base station that receives radio waves and operates based on setting information, and according to the radio wave data A monitoring unit that monitors communication quality in the communication line based on the identification number assigned to the packet, and a threshold determination unit that determines whether the communication quality is out of an allowable range based on a threshold value; When the communication quality is outside an allowable range, as the setting information , a control unit that changes a packet compression rate according to the radio wave data, a transmission unit that transmits the changed setting information to the radio base station, The signal processing device is characterized in that the control unit increases the compression rate of the packet according to the radio wave data by radio waves received at a low priority frequency .
According to one aspect of the present invention, a reception unit that receives a packet according to compressed radio wave data via a communication line from a radio base station that receives radio waves and operates based on setting information, and according to the radio wave data A monitoring unit that monitors communication quality in the communication line based on the identification number assigned to the packet, and a threshold determination unit that determines whether the communication quality is out of an allowable range based on a threshold value; When the communication quality is outside the allowable range, as the setting information, a control unit that changes the transmission timing of the packet according to the radio wave data, a transmission unit that transmits the changed setting information to the radio base station, A packet according to the radio wave data so as to relatively increase the frequency of transmission of packets according to the radio wave data by radio waves received at a high priority frequency. A signal processing apparatus characterized by changing the transmission timing of bets.

One embodiment of the present invention is provided to a packet according to compressed radio wave data received via a communication line from a radio base station that receives radio waves and operates based on setting information to a computer of a signal processing device. A first procedure for monitoring communication quality on the communication line based on the identification number, a second procedure for determining whether the communication quality is outside an allowable range, based on a threshold value, and the communication When the quality is outside the allowable range, as the setting information , a third procedure for changing the packet compression rate according to the radio wave data, and a fourth procedure for transmitting the changed setting information to the radio base station The communication quality control program is characterized in that, in the third procedure, the packet compression rate corresponding to the radio wave data by radio waves received at a low priority frequency is increased .
One embodiment of the present invention is provided to a packet according to compressed radio wave data received via a communication line from a radio base station that receives radio waves and operates based on setting information to a computer of a signal processing device. A first procedure for monitoring communication quality on the communication line based on the identification number, a second procedure for determining whether the communication quality is outside an allowable range, based on a threshold value, and the communication When the quality is out of the allowable range, as the setting information, a third procedure for changing the packet transmission timing according to the radio wave data and a fourth procedure for transmitting the changed setting information to the radio base station In the third procedure, the radio wave data is set so that the frequency of transmission of packets corresponding to the radio wave data by radio waves received at a high priority frequency is relatively high. A communication quality control program and changes the transmission timing of Flip packets.

  According to the present invention, the monitoring unit is based on the identification number given to the packet corresponding to the compressed radio wave data received via the communication line from the radio base station operating based on the setting information. The communication quality on the communication line is monitored. The control unit changes the setting information when the communication quality is outside the allowable range. Accordingly, the communication quality control method, the signal processing device, and the communication quality control program can appropriately collect radio wave data even if the communication quality varies between the radio base station and the signal processing device.

It is a block diagram which shows the structural example of the communication quality control system in one Embodiment of this invention. It is a figure which shows the structural example of the packet transmitted from the wireless base station in one Embodiment of this invention. It is a flowchart which shows the operation | movement procedure of the compression process and transmission process by a wireless base station in one Embodiment of this invention. It is a flowchart which shows the monitoring procedure of the communication quality by the signal processing apparatus in one Embodiment of this invention. It is a figure which shows the electromagnetic wave received by the wireless base station for every frequency in one Embodiment of this invention. It is a figure which shows the structural example of the packet in one Embodiment of this invention for every communication quality level. It is a figure which shows the example of the transmission timing of the packet according to communication frequency in one Embodiment of this invention. It is a figure which shows the structural example of the packet for every transmission timing in one Embodiment of this invention. It is a figure which shows the structural example of the packet at the time of changing the compression rate in one Embodiment of this invention.

  An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of a communication quality control system. The communication quality control system includes a radio base station 100 and a signal processing device 300. The radio base station 100 and the signal processing device 300 are connected via a communication line 200 so that they can communicate with each other. In the communication quality control system, the signal processing device 300 can appropriately collect a digital signal (radio wave data) based on a radio signal from the radio base station 100 even if the communication quality in the communication line 200 varies.

  The communication quality control system may include a plurality of radio base stations 100. Hereinafter, the communication quality control system will be described as including the radio base stations 100-1 to 100-n (n is an integer of 2 or more). Further, for items common to the radio base stations 100-1 to 100-n, the symbol n is omitted, and is expressed as “radio base station 100”.

First, a configuration example of the radio base station 100 will be described.
The radio base station 100 includes an antenna 110, a reception unit 120, a conversion unit 130, a compression unit 140, a control unit 150, a packet generation unit 160, and a transmission / reception unit 170. For example, the radio base station 100-n includes an antenna 110-n, a reception unit 120-n, a conversion unit 130-n, a compression unit 140-n, a control unit 150-n, and a packet generation unit 160-n. And a transmission / reception unit 170-n.

  In the following, for items that are common to the antennas 110-1 to 110-n, the symbol n is omitted, and is denoted as “antenna 110”. Moreover, about the matter common to the receiving parts 120-1 to 120-n, the code | symbol n is abbreviate | omitted and it describes with the "receiving part 120." Moreover, about the matter common to the conversion parts 130-1 to 130-n, the code | symbol n is abbreviate | omitted and it describes with the "conversion part 130." Moreover, about the matter common to the compression parts 140-1 to 140-n, the code | symbol n is abbreviate | omitted and it describes with the "compression part 140."

  Moreover, about the matter common to the control parts 150-1 to 150-n, the code | symbol n is abbreviate | omitted and it describes with the "control part 150." Further, items common to the packet generation units 160-1 to 160-n are denoted by “packet generation unit 160” by omitting the symbol n. Moreover, about the matter common to the transmission / reception parts 170-1 to 170-n, the code | symbol n is abbreviate | omitted and it describes with the "transmission / reception part 170".

  The antenna 110 wirelessly receives a radio wave indicating a radio signal from the sensor 400 in a predetermined wide frequency band. Note that a plurality of antennas 110 may be provided in the radio base station 100 for each frequency band.

  The receiving unit 120 (Radio Frequency unit: RF unit) receives a radio signal in a predetermined wide frequency band via the antenna 110. The receiving unit 120 outputs the received radio signal (analog signal) to the conversion unit 130. Note that a plurality of receiving units 120 may be provided in the radio base station 100 for each frequency band, similarly to the antenna 110.

  The conversion unit 130 (analog to digital converter unit: ADC unit) converts the radio signal (analog signal) received by the reception unit 120 into a digital signal.

  The compression unit 140 compresses the capacity of a digital signal (radio wave data) based on a radio signal. Here, the transmission / reception unit 140 may use a compression sensing technique (for example, see Reference Document 1 or Reference Document 2 shown below) that can compress a digital signal based on a wireless signal to a sampling rate or less. .

<Reference 1>
D. Lee et al., “Combined Nyquist and compressed sampling method for radio wave data compression of a heterogeneous network system,” IEICE Trans. Commun., Vol. E93-B, no.12, pp. 3238-3247, Dec. 2010.

<Reference 2>
D. Lee, T. Sasaki, T. Yamada, K. Akabane, Y. Yamaguchi and K. Uehara, “Spectrum Sensing for Networked System Using 1-bit Compressed Sensing with Partial Random Circulant Measurement Matrices,” Proc. IEEE 75th VTC 2012 spring, 8A-4, pp1-5, Yokohama, Japan, May 2012.

  The control unit 150 sets various setting information in the compression unit 140 and the transmission / reception unit 170. Various setting information may be notified from the signal processing device 300 to the control unit 150 via the transmission / reception unit 170. The control unit 150 outputs a compression parameter (for example, a compression rate) used for the compression process to the compression unit 140 as setting information. Further, the control unit 150 outputs transmission parameters (for example, transmission timing) used for transmission processing to the transmission / reception unit 170 as setting information.

  The packet generation unit 160 divides the digital signal (compressed radio wave data) compressed by the compression unit 140, thereby generating a packet according to the compressed radio wave data. The packet generation unit 160 includes a counter unit 161. For example, the packet generation unit 160-n includes a counter unit 161-n. Hereinafter, items common to the counter units 161-1 to 161-n are denoted by “counter unit 161” by omitting the symbol n.

  The counter unit 161 gives an identification number (ID: identification) to the packet corresponding to the compressed radio wave data. The counter unit 161 outputs a packet corresponding to the compressed radio wave data to which the identification number is assigned to the transmission / reception unit 170.

  The transmission / reception unit 170 transmits the packet with the identification number generated by the packet generation unit 160, that is, the packet according to the compressed radio wave data with the identification number, via the communication line 200. Send to. The transmission / reception unit 170 may transmit identification information for identifying the base station to the signal processing device 300.

  The transmission / reception unit 170 receives setting information for appropriately collecting digital signals (radio wave data) based on radio signals from the signal processing device 300 via the communication line 200. This setting information is, for example, a compression parameter used for the compression process and a transmission parameter used for the transmission process.

  FIG. 2 shows a configuration example of a packet transmitted from the radio base station. The packet generation unit 160 (see FIG. 1) divides the digital signal (compressed radio wave data) compressed by the compression unit 140 (see FIG. 1) into fixed-length packets. The counter unit 161 (see FIG. 1) gives a fixed-length identification number (ID) to a packet corresponding to the compressed radio wave data. The fixed-length identification number increases in units of a predetermined value (for example, value 1). When the assigned identification number reaches the upper limit value, the counter unit 161 may initialize the identification number to a predetermined value. The transmission / reception unit 170 may transmit the packet at a fixed timing (for example, a cycle of 10 [ms]).

FIG. 3 is a flowchart showing an operation procedure of compression processing and transmission processing by the radio base station.
(Step S <b> 1) The control unit 150 outputs the compression parameters used for the compression process to the compression unit 170. The control unit 150 outputs transmission parameters used for transmission processing to the compression unit 170. Here, the control unit 150 may receive at least one of the compression parameter and the transmission parameter from the signal processing device 300 via the transmission / reception unit 170.

  (Step S <b> 2) The receiving unit 120 receives a radio signal in a predetermined wide frequency band via the antenna 110. The compressing unit 140 compresses the capacity of the digital signal (radio wave data) based on the radio signal based on the compression parameter. The transmission / reception unit 170 transmits the packet generated by the packet generation unit 160 to the signal processing device 300 based on the transmission parameter.

Next, returning to FIG. 1, a configuration example of the signal processing device 300 will be described.
The signal processing device 300 is disposed in a remote place away from the radio base station 100. The signal processing device 300 includes a transmission / reception unit 310, an expansion unit 320, a storage unit 330, a control unit 340, a threshold value determination unit 350, a first monitoring unit 360, and a second monitoring unit 370.

  The transmission / reception unit 310 receives from the radio base station 100 a packet corresponding to the compressed radio wave data to which the identification number is assigned. The transmission / reception unit 310 may combine a plurality of received packets and convert the packets into a predetermined data format. Also, the transmission / reception unit 310 transmits setting information (for example, compression parameters used for compression processing and transmission parameters used for transmission processing) via the communication line 200 based on control by the control unit 340. Transmit to the radio base station 100.

The decompression unit 320 decompresses (restores) the compressed radio wave data to which the identification number is assigned based on the decompression parameter. The expansion parameter may be determined by the control unit 340. The decompression unit 320 may decompress a packet corresponding to radio wave data compressed based on a compression sensing technique (see, for example, the above-described Reference Document 1 or Reference Document 2). The decompression unit 320 performs decompression processing for each radio base station 100 based on identification information for identifying the radio base station 100.
The storage unit 330 stores the radio wave data (digital signal based on a radio signal) expanded (restored) by the expansion unit 320.

  The first monitoring unit 360 monitors the packet loss for each radio base station 100 for the packet corresponding to the compressed radio wave data to which the identification number is assigned. Here, the first monitoring unit 360 monitors, for example, a packet loss rate in order to monitor packet loss.

  Specifically, the first monitoring unit 360 may count the number of lost packets per unit time. More specifically, the first monitoring unit 360 confirms the identification number (ID) given to the received packet, and if a packet loss (identification number missing) occurs, the packet Remember the number of losses. The first monitoring unit 360 calculates a packet loss rate based on a predetermined number of packet losses per unit time. The first monitoring unit 360 outputs packet loss data to the threshold determination unit 350.

  The second monitoring unit 370 monitors the packet delay (for example, delay fluctuation, arrival time fluctuation) for each radio base station 100 with respect to the packet corresponding to the compressed radio wave data to which the identification number is assigned. Here, the first monitoring unit 360 monitors, for example, the arrival time (arrival time) of the packet in order to monitor the delay fluctuation of the packet. More specifically, since the transmission / reception unit 170 of the radio base station 100 transmits a packet at a fixed timing, the first monitoring unit 360 uses the identification number (ID) given to the received packet. Confirm and monitor the arrival time of the packet. Second monitoring unit 370 outputs packet delay fluctuation data to threshold value determination unit 350.

  Note that the technique shown in Reference Document 3 or Reference Document 4 shown below is used as a method for estimating the bandwidth of a communication line (network) based on packet loss or packet delay fluctuation. Good.

<Reference 3>
Masahiro Miyasama, Takanori Iwai, Hideki Kasahara, “Examination of Available Bandwidth Estimation by Packet Delay Correlation,” IEICE Tech. Bulletin, NS2002-291, 2002.

<Reference 4>
Yoshiko Matsumoto, Kenji Kawahara, Yuji Oie, “Proposal and Evaluation of Packet Loss Rate Estimation Method in Active Measurement,” IEICE Technical Report, IN2002-188, pp.31-36 2003.

  The threshold determination unit 350 determines a quality level of communication quality in the communication line 200 (network) based on a predetermined threshold. More specifically, threshold determination section 350 determines whether or not at least one of packet loss and delay fluctuation is outside the allowable range (outside the range determined by the threshold) based on a predetermined threshold. . The threshold value determination unit 350 notifies the control unit 340 to change the setting information in the radio base station 100 when at least one of the packet loss and the delay fluctuation is outside the allowable range.

  The control unit 340 receives various setting information (for example, compression parameters and transmission parameters) for the control unit 150 of the radio base station 100 to control the compression unit 140 and the transmission / reception unit 170 in response to a request from the threshold determination unit 350. Determine. That is, the control unit 340 notifies the control unit 150 of setting information of each unit that is controlled by the control unit 150 of the radio base station 100, whereby communication quality in the communication line 200 (for example, packet loss, packet delay fluctuation). To control.

When the quality level of the communication quality in the communication line 200 is lower than a predetermined threshold, the control unit 340 compresses the packet so as to increase the compression rate of packets according to radio wave data received by radio waves received at a low priority frequency. Parameters may be defined. Further, when the quality level of the communication quality in the communication line 200 is lower than the predetermined threshold, the control unit 340 transmits the packet communication frequency (transmitted according to the radio wave data by the radio wave received at the high priority frequency, for example. The transmission parameter may be determined so as to increase (frequency) (for example, shorten the transmission interval).
The control unit 340 determines expansion parameters used by the expansion unit 320 based on various setting information set by the control unit 150 of the radio base station 100.

FIG. 4 is a flowchart showing a communication quality monitoring procedure by the signal processing apparatus.
(Step Sa1) The transmission / reception unit 310 receives, from the radio base station 100, a packet corresponding to the compressed radio wave data to which the identification number is assigned.
(Step Sa2-1) The first monitoring unit 360 monitors the packet loss for each radio base station 100 for the packet corresponding to the compressed radio wave data to which the identification number is assigned.
(Step Sa2-2) The second monitoring unit 370 monitors the delay fluctuation of the packet for each radio base station 100 for the packet corresponding to the compressed radio wave data to which the identification number is assigned.

  (Step Sa3) The threshold determination unit 350 determines whether at least one of the packet loss and the delay fluctuation is outside the allowable range. When the packet loss and the delay fluctuation are within the allowable range (step Sa3: within the allowable range), the threshold determination unit 350 notifies the control unit 340 that the packet loss and the delay fluctuation are within the allowable range, and performs processing. Exit. Here, the transmission / reception unit 310 may receive a new packet from the radio base station 100 according to the compressed radio wave data to which the identification number is assigned. Radio wave data (contents) other than the identification number assigned to the packet is decompressed (restored) by the decompressing unit 320. On the other hand, when at least one of the packet loss and the delay fluctuation is outside the allowable range (step Sa3: outside the allowable range), the threshold determination unit 350 proceeds with the process to step Sa4.

  (Step Sa4) The threshold determination unit 350 notifies the control unit 340 to change the setting information in the radio base station 100. More specifically, the threshold determination unit 350 notifies the control unit 340 to change the compression rate, that is, to change the compression parameter. Further, the threshold determination unit 350 notifies the control unit 340 to change the transmission timing, that is, to change the transmission parameter.

  (Step Sa5) The control unit 340 notifies the control unit 150 of the radio base station 100 via the transmission / reception unit 310 to change the setting information (for example, at least one of the compression parameter and the transmission parameter). The control unit 340 determines an expansion parameter according to the compression rate of the packet transmitted from the radio base station 100 based on the setting information, and outputs the determined expansion parameter to the expansion unit 320.

  FIG. 5 shows radio waves received by the radio base station for each frequency. The frequency of the radio wave received by the radio base station 100 may have a predetermined width, that is, a band. The frequency of the radio wave received by the radio base station 100 may be close or remote on the frequency axis. Further, the frequency of the received radio wave may be one or plural.

  In FIG. 5, as an example, priority levels 1 to 3 are determined in advance. Here, it is assumed that priority 1 is the highest priority and priority 3 is the lowest priority. Moreover, in FIG. 5, the frequency a-the frequency d are defined beforehand as an example. Here, in FIG. 5, it is assumed that the order in which the frequency is high is the order of frequency d, frequency c, frequency b, and frequency a. Hereinafter, it is assumed that the frequency a is priority 1, the frequency b is priority 2, the frequency c is priority 2, and the frequency d is priority 3.

  FIG. 6 shows a packet configuration example for each communication quality level. The threshold determination unit 350 controls the communication quality in the communication line 200 by selecting a frequency so that a digital signal (radio wave data) based on a radio signal having a high priority is transmitted with priority. More specifically, when the communication quality in the communication line 200 is the best quality level A, the threshold value determination unit 350 is a digital signal based on radio signals of all predetermined frequencies (frequency a to frequency d). The control unit 340 is notified to set the packet compression rate so that (radio wave data) is transmitted.

  When the communication quality in the communication line 200 is the next highest quality level B after the quality level A, the threshold value determination unit 350, other than the frequency d having the lowest priority among all the predetermined frequencies, that is, the frequency The control unit 340 is notified to set the compression rate of the packet so that a digital signal (radio wave data) based on the radio signals of a to frequency c is transmitted.

  When the communication quality in the communication line 200 is the lowest quality level C, the threshold determination unit 350 selects a digital signal (radio wave data) based on a radio signal having the highest priority a among all the predetermined frequencies. ) Is notified to the control unit 340 so as to set the compression rate of the packet so that only the packet is transmitted.

  FIG. 7 shows an example of packet transmission timing according to the communication frequency. In FIG. 7, as an example, the transmission timing is a set of five transmission timings (transmission timing α, transmission timing β, transmission timing α, transmission timing β, and transmission timing γ). Here, the transmission timing α is assigned to two transmission timings as an example of the communication frequency among the five transmission timings. Also, the transmission timing β is assigned to two transmission timings as an example of the communication frequency among the five transmission timings. Also, the transmission timing γ is assigned to one transmission timing as an example of the communication frequency among the five transmission timings.

  FIG. 8 shows a configuration example of a packet for each transmission timing. At the transmission timing α, a packet including a digital signal (radio wave data) based on the radio signals of the frequency a and the frequency b is transmitted. At the transmission timing β, a packet including a digital signal (radio wave data) based on the radio signals of the frequency a and the frequency c is transmitted. Further, at the transmission timing γ, a packet including a digital signal (radio wave data) based on the radio signals of the frequency a and the frequency d is transmitted.

  The threshold determination unit 350 determines the communication frequency of packets so that packets with high priority are transmitted with priority. More specifically, the threshold determination unit 350 sets the packet transmission timing so that a digital signal (radio wave data) based on the radio signal of the frequency a having the highest priority is transmitted at each transmission timing. , Notify the control unit 340.

  For example, the threshold determination unit 350 transmits a digital signal (radio wave data) based on radio signals having a medium-priority high frequency b and frequency c, for example, two times each in one set of five transmission timings. The control unit 340 is notified to set the packet transmission timing. In addition, the threshold determination unit 350 transmits a packet so that a digital signal (radio wave data) based on a radio signal having a frequency d with the lowest priority is transmitted only once, for example, in one set of five transmission timings. The control unit 340 is notified to set the timing.

  FIG. 9 shows a packet configuration example when the compression rate is changed. The threshold determination unit 350 controls the communication quality in the communication line 200 by changing the compression rate so that a digital signal (radio wave data) based on a radio signal having a high priority frequency is transmitted with priority. More specifically, when the communication quality in the communication line 200 is the best quality level A, the threshold value determination unit 350 is a digital signal based on radio signals of all predetermined frequencies (frequency a to frequency d). The control unit 340 is notified so that each packet of (radio wave data) is transmitted at the same compression rate.

  When the communication quality in the communication line 200 is the next highest quality level B after the quality level A, the threshold value determination unit 350, among all the predetermined frequencies, other than the frequency a having the highest priority, that is, the frequency The control unit 340 is notified so that each packet of a digital signal (radio wave data) based on a radio signal of b to frequency d is transmitted at a relatively high compression rate.

  As described above, the signal processing device 300 receives the radio wave and transmits the compressed radio wave data from the radio base station 100 (for example, the radio base station 100-n) that operates based on the setting information via the communication line 200. And a first monitoring unit 360 that monitors communication quality in the communication line 200 based on an identification number (ID) given to the packet. 2 monitoring unit 370, threshold determination unit 350 that determines whether or not the communication quality is outside the allowable range, and control unit 340 that changes the setting information when the communication quality is outside the allowable range. A transmission / reception unit 310 that transmits the changed setting information to the radio base station 100 (for example, the radio base station 100-n).

  The communication quality control method is a communication quality control method in a communication quality control system that includes a radio base station 100 that receives radio waves and operates based on setting information, and a signal processing device 300. Identification given to packets according to compressed radio wave data received by the first monitoring unit 360 and the second monitoring unit 370 from the radio base station 100 (for example, the radio base station 100-n) via the communication line 200 Based on the number (ID), the step of monitoring the communication quality in the communication line 200 and the threshold value determination unit 350 of the signal processing device 300 determine whether the communication quality is out of the allowable range based on the threshold value. A step in which the control unit 340 of the signal processing device 300 changes the setting information when the communication quality is outside the allowable range; and transmission and reception of the signal processing device 300 310 has a sending setting information has been changed to the radio base station 100 (e.g., the radio base station 100-n), a.

  The communication quality control program is received by the computer of the signal processing device 300 from the radio base station 100 (for example, the radio base station 100-n) that receives radio waves and operates based on the setting information via the communication line 200. Based on the identification number assigned to the packet corresponding to the compressed radio wave data, the procedure for monitoring the communication quality in the communication line 200 and whether or not the communication quality 200 is outside the allowable range are determined based on the threshold value. And a procedure for changing the setting information and a procedure for transmitting the changed setting information to the radio base station 100 (for example, the radio base station 100-n) when the communication quality is outside the allowable range. .

  With this configuration, the first monitoring unit 360 and the second monitoring unit 370 respond to the compressed radio wave data received via the communication line 200 from the radio base station 100 that receives radio waves and operates based on the setting information. Based on the identification number (ID) given to the packet, the communication quality in the communication line 200 is monitored. The control unit 340 changes the setting information when the communication quality is outside the allowable range.

  Accordingly, the communication quality control method, the signal processing device, and the communication quality control program can appropriately collect radio wave data even if the communication quality varies between the radio base station and the signal processing device.

  That is, in the communication quality control system, the signal processing device 300 can execute the communication quality control even when many wireless systems are mixed in one frequency band. Further, in the communication quality control system, since the signal processing device 300 executes the communication quality control, it is not necessary to install a large capacity software for executing the communication quality control in the radio base station 100.

  Further, the communication quality control system monitors the communication quality of the communication line by monitoring the quality of the communication line (network) based on a packet used for transmission of a digital signal (radio wave data) based on a radio signal. Therefore, the communication quality of the communication line can be managed without redefining the probe packet for the communication.

  The communication quality control system controls the transmission data amount of the digital signal based on the radio signal. As a result, the communication quality control system can always collect digital signals (radio wave data) based on radio signals according to the priority of the frequency band, so that loss of packets containing digital signals based on radio signals is lost. Does not occur.

  In addition, since the signal processing device 300 disposed in a remote place away from the radio base station 100 performs signal processing in the communication quality control system, a new radio system can be obtained simply by changing the signal processing executed by the signal processing device 300. Corresponding to (wireless system), communication quality can be controlled (managed). Here, new software may be added to the signal processing device 300. Further, the signal processing device 300 may be changed to hardware with higher performance. Further, the signal processing performed by the signal processing device 300 may be distributed and processed by increasing the number of signal processing devices 300. The communication quality control system may be used in a system that monitors illegal radio stations.

  The first monitoring unit 360 and the second monitoring unit 370 may monitor at least one of packet loss and delay as communication quality. When the communication quality is out of the allowable range, the control unit 340 may change the setting information so that packets corresponding to radio data having high priority are transmitted with priority.

The control unit 340 may change the packet compression rate as setting information.
The control unit 340 may increase the packet compression rate according to radio wave data received by radio waves received at a low priority frequency (see, for example, FIG. 9).

The control unit 340 may change the packet transmission timing as setting information.
The control unit 340 may change the packet transmission timing so as to relatively increase the frequency of transmission of packets according to radio wave data received by radio waves received at a high priority frequency (for example, FIG. 6). FIG. 7 and FIG. 8).

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

  Note that a program for realizing the apparatus and system described above may be recorded on a computer-readable recording medium, and the program may be read into a computer system and executed. Here, the “computer system” includes an OS and hardware such as peripheral devices.

  The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” refers to a volatile memory (RAM) in a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, those holding programs for a certain period of time are also included.

  The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

DESCRIPTION OF SYMBOLS 100 ... Wireless base station, 110 ... Antenna, 120 ... Reception part, 130 ... Conversion part, 140 ... Compression part, 150 ... Control part, 160 ... Packet generation part, 161 ... Counter part, 170 ... Transmission / reception part, 200 ... Communication line , 300 ... signal processing device, 310 ... transmission / reception unit, 320 ... expansion unit, 330 ... storage unit, 340 ... control unit, 350 ... threshold determination unit, 360 ... first monitoring unit, 370 ... second monitoring unit

Claims (7)

A communication quality control method in a communication quality control system comprising a radio base station that receives radio waves and operates based on setting information, and a signal processing device,
The monitoring unit of the signal processing device monitors the communication quality on the communication line based on the identification number given to the packet corresponding to the compressed radio wave data received from the radio base station via the communication line. Steps,
A step of determining whether or not the communication quality is outside an allowable range by the threshold determination unit of the signal processing device based on the threshold;
The control unit of the signal processing device, when the communication quality is outside the allowable range, changing the compression rate of the packet according to the radio wave data as the setting information;
A transmitting unit of the signal processing device transmitting the changed setting information to the radio base station;
I have a,
The said control part raises the compression rate of the packet according to the said radio wave data by the radio wave received by the frequency with a low priority, The communication quality control method characterized by the above-mentioned . A communication quality control method in a communication quality control system comprising a radio base station that receives radio waves and operates based on setting information, and a signal processing device,
The monitoring unit of the signal processing device monitors the communication quality on the communication line based on the identification number given to the packet corresponding to the compressed radio wave data received from the radio base station via the communication line. Steps,
A step of determining whether or not the communication quality is outside an allowable range by the threshold determination unit of the signal processing device based on the threshold;
The control unit of the signal processing device, when the communication quality is outside the allowable range, changing the transmission timing of the packet according to the radio wave data as the setting information;
A transmitting unit of the signal processing device transmitting the changed setting information to the radio base station;
I have a,
The control unit changes the transmission timing of the packet according to the radio wave data so as to relatively increase the frequency of transmission of the packet according to the radio wave data by the radio wave received at a high priority frequency. A communication quality control method. The monitoring unit monitors at least one of packet loss and delay according to the radio wave data as the communication quality;
Claim wherein, if the communication quality is out of the allowable range, so that the packet corresponding to the higher priority the radio data is transmitted with priority, characterized in that to change the setting information The communication quality control method according to claim 1 or 2 . A receiving unit that receives a radio wave data according to compressed radio wave data from a radio base station that receives radio waves and operates based on setting information via a communication line;
Based on the identification number given to the packet according to the radio wave data, a monitoring unit for monitoring the communication quality in the communication line;
A threshold determination unit that determines whether or not the communication quality is out of an allowable range based on a threshold;
When the communication quality is outside an allowable range, as the setting information , a control unit that changes a compression rate of a packet according to the radio wave data ;
A transmission unit for transmitting the changed setting information to the radio base station;
Equipped with a,
The signal processing apparatus , wherein the control unit increases a compression rate of a packet corresponding to the radio wave data by radio waves received at a low priority frequency . A receiving unit that receives a radio wave data according to compressed radio wave data from a radio base station that receives radio waves and operates based on setting information via a communication line;
Based on the identification number given to the packet according to the radio wave data, a monitoring unit for monitoring the communication quality in the communication line;
A threshold determination unit that determines whether or not the communication quality is out of an allowable range based on a threshold;
When the communication quality is outside an allowable range, as the setting information , a control unit that changes a transmission timing of a packet according to the radio wave data ;
A transmission unit for transmitting the changed setting information to the radio base station;
Bei to give a,
The control unit changes the transmission timing of the packet according to the radio wave data so as to relatively increase the frequency of transmission of the packet according to the radio wave data by the radio wave received at a high priority frequency. A signal processing device. In the computer of the signal processing device,
Based on the identification number given to the packet corresponding to the compressed radio wave data received via the communication line from the radio base station that receives the radio wave and operates based on the setting information, the communication quality in the communication line is determined. A first procedure to monitor;
A second procedure for determining whether or not the communication quality is out of an allowable range based on a threshold;
When the communication quality is outside the allowable range, as the setting information , a third procedure for changing a compression rate of the packet according to the radio wave data ;
A fourth procedure for transmitting the changed setting information to the radio base station;
And execute
In the third procedure, the compression rate of the packet corresponding to the radio wave data by radio waves received at a low priority frequency is increased.
A communication quality control program. In the computer of the signal processing device,
Based on the identification number given to the packet corresponding to the compressed radio wave data received via the communication line from the radio base station that receives the radio wave and operates based on the setting information, the communication quality in the communication line is determined. A first procedure to monitor;
A second procedure for determining whether or not the communication quality is out of an allowable range based on a threshold;
When the communication quality is outside an allowable range, as the setting information , a third procedure for changing a packet transmission timing according to the radio wave data ;
A fourth procedure for transmitting the changed setting information to the radio base station;
Was executed,
In the third procedure, the packet transmission timing according to the radio wave data is changed so as to relatively increase the frequency of transmission of packets according to the radio wave data by radio waves received at a high priority frequency. Do
A communication quality control program.

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