JP2001333139A - Piafs protocol monitor unit and piafs protocol monitor method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a PIAFS(PHS Internet Access Forum Standard) protocol monitor unit and a PIAFS protocol monitor method that can extract a PIAFS frame by using PCM data for PIAFS data communication and a synchronizing clock and provide an environment of monitoring PIAFS communication data up to the PIAFS version 2.1. SOLUTION: A PIAFS frame extract section is provided with a 32K PIAFS frame detection section 201 that detects a 32K PIAFS frame to output D7-D4 frame MSB detection signals and a 32K PIAFS detection signal, a 64K PIAFS frame detection section 202 that detects a 64k PIAFS frame to output a 64K PIAFS detection signal, a 32K PIAFS frame generating section 203 that converts 64K PCM serial data into 32K serial data, and a data changeover control section 204 that selects the 64K PCM serial data or the 32K serial data and outputs the selected data on the opportunity of switching of a communication speed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a PIAFS (PHS)
Internet Access Forum Standard) PIAFS protocol monitoring device for monitoring protocol and PIAF
More particularly, the present invention relates to a PIAFS protocol monitoring device that extracts a PIAFS frame from PCM data and monitors a PIAFS protocol, and a P-type protocol monitoring method.
The present invention relates to an IAFS protocol monitoring method.

[0002]

2. Description of the Related Art Conventionally, a method for evaluating a PIAFS protocol is based on a line between a PHS and an adapter for controlling the PIAFS protocol or a device for controlling the PIAFS protocol, for example, a protocol converter (hereinafter referred to as PTE),
Terminal adapter for PHS data communication (hereinafter TAP)
, Etc.), a necessary signal line is branched in a line immediately before the monitoring and analysis of the PIAFS protocol.

[0003] A PTE or TAP interface having a data communication function of the PIAFS protocol is connected to an ISDN line, and a signal such as a protocol analyzer is connected and communicated in an S / T point interface line immediately before each device. The configuration was such that the line was branched and monitored.

[0004] Therefore, an equipment environment for evaluating the PIAFS protocol requires an ISDN line (including call processing) and a transmission line on the exchange side, and a protocol analyzer for confirming data is based on ISDN I.D. 430 and V.I. 110
Physical and logical communication standards. In other words, it is impossible to evaluate the PIAFS protocol on the PTE side or TAP side without waiting for the ISDN line.

[0005] To evaluate the PIAFS protocol, P
A large-scale facility including a device having a data communication function of the IAFS protocol is required, and the environment becomes complicated.
Evaluating the PIAFS protocol for PIAFS data communication with a variable speed of Kbps / 64 Kbps also required large-scale equipment.

A common feature between the PIAFS protocol evaluation method in the line between the PHS and the adapter controlling the PIAFS protocol and the PIAFS protocol evaluation method in the ISDN side is to determine the head of the communication band of the communication line. The point is that a frame pulse is used.

[0007] In the line between the PHS and the adapter that controls the PIAFS protocol, a SYN defined in the PIAFS frame format is determined from a frame pulse that determines the head of each byte of data to be transmitted and received and PCM data.
The synchronization pattern of the C field (hereinafter, referred to as a SYNC pattern) is extracted to analyze the PIAFS protocol.

[0008] Even at the S / T point interface line on the PTE side or TAP side, I.T. The Bch to be communicated is extracted from the frame pulse of I.430, and in the case of data communication of 32 Kbps in particular, I.V. 4
Since the upper 4 bits in the PCM data at 60 are valid communication data, the frame pulse is used to extract the PIAFS communication data.

[0009]

However, according to the prior art, in the case of an exchange incorporating PIAFS protocol processing, the intermediate line of PIAFS data communication is located inside the exchange. The PIAFS protocol cannot be monitored, and the PIAFS frame cannot be extracted only by the PCM data for performing the PIAFS data communication and the 64K synchronous clock.

The present invention has been made in view of such a problem, and an object of the present invention is to perform PIAFS data communication without using a frame pulse even in an exchange incorporating a PIAFS protocol process. PC to do
The PIAFS frame can be extracted only with the M data and the synchronization clock, the PIAFS protocol of the PIAFS communication data composed of the multiplexed PCM data can be monitored inside the exchange, and the PIAFS up to PIAFS version 2.1 can be monitored.
PIA that can provide an environment for monitoring AFS communication data
An object of the present invention is to provide an FS protocol monitoring device and a PIAFS protocol monitoring method.

[0011]

Means for Solving the Problems In order to solve the above problems, the present invention has the following constitution. The gist of the invention according to claim 1 is a PIAFS protocol monitoring device that monitors a PIAFS protocol of PIAFS communication data having a plurality of communication speeds, and extracts a PIAFS frame for each communication speed from the PIAFS communication data. Frame extracting means, and the PIA for each communication speed extracted by the PIAFS frame extracting means
A PIAFS protocol monitoring device comprising: a protocol analysis unit that monitors the PIAFS protocol based on an FS frame. The gist of the invention described in claim 2 is that the PIAFS frame extracting means uses the PIAFS communication data, which is PCM data, and a synchronization clock to generate the PIA for each communication speed.
2. The PIAFS protocol monitor according to claim 1, wherein the FS frame is extracted. The gist of the invention described in claim 3 is that the PIAFS communication data is serial data having a communication speed of 64 Kbps.
64K serial data converting means for converting to 4KPCM serial data, wherein the PIAFS frame extracting means extracts the PIAFS frame for each communication speed from the 64KPCM serial data converted by the 64K serial data converting means. A PIAFS protocol monitor according to claim 1 or claim 2. The gist of the invention according to claim 4 is that the communication speed of the PIAFS communication data is 32 Kbps.
And the 64 Kbps, and the PIAFS frame extracting means converts the 32 Kbps PIAFS frame to 3
32KPIAF extracted as 2KPIAFS frame
S frame extraction means and the PIAFS of 64 Kbps
Extract frame as 64KPIAFS frame 6
4. The PIAFS according to claim 1, further comprising a 4K PIAFS frame extraction unit.
Exists in the protocol monitor device. The gist of the invention described in claim 5 is that the 32K PIAFS frame extracting means includes a 32K PIAFS frame indicating a start of the 32K PIAFS frame.
32K PIAFS for detecting PIAFS frame MSB
A frame MSB detecting means;
The S frame extracting means is configured to detect the 32K PIAFS frame M by the 32K PIAFS frame MSB detecting means.
The PIAFS protocol monitor according to any one of claims 1 to 4, wherein the 32K PIAFS frame is extracted based on the detection of the SB.
The gist of the invention according to claim 6 is that the 32KPIAF
32KPIAFS by S frame MSB detecting means
Based on the detection of the frame MSB, the 32KPIAF
A frame pulse generator for generating a frame pulse synchronized with the S frame; wherein the 32K PIAFS frame extractor is configured to generate the frame pulse based on the frame pulse generated by the frame pulse generator.
6. The PIAFS protocol monitor according to claim 1, wherein an IAFS frame is extracted. The gist of the invention described in claim 7 is that the 32KPI
2. A 32K serial data converting means for converting the 32K PIAFS frame extracted from the 64K PCM serial data by AFS frame extracting means into 32K serial data which is the serial data having a communication speed of 32 Kbps. 6. The PIAFS protocol monitor device according to any one of the above items 1 to 6. The gist of the invention described in claim 8 is that the PI
The AFS frame extracting means determines that the communication speed is 64 Kbp.
s the 64K PIAFS frame and the communication speed are 3
8. The PIAFS protocol monitor device according to claim 1, wherein the 32K PIAFS frame of 2 Kbps is selectively output to the protocol analysis unit. The gist of the invention according to claim 9 is a PIAFS protocol monitoring method for monitoring the PIAFS protocol of PIAFS communication data having a plurality of communication speeds, and extracting a PIAFS frame for each communication speed from the PIAFS communication data. Monitoring the PIAFS protocol based on the extracted PIAFS frames for each of the communication speeds. The gist of the invention described in claim 10 is that the PIAFS frame for each communication speed is extracted from the PIAFS communication data that is PCM data and a synchronization clock. Exist. The gist of the invention according to claim 11 is that the PIAFS communication data is converted into 64KPCM serial data that is serial data having a communication speed of 64 Kbps, and the PIAFS frame for each communication speed is converted from the converted 64KPCM serial data. The PIAFS protocol monitoring method according to claim 9 or 10, wherein the extraction is performed. The gist of the invention according to claim 12 is that the communication speed of the PIAFS communication data is comprised of 32 Kbps and 64 Kbps.
The PIA according to any one of claims 9 to 11, wherein the PIAS frame of ps is extracted as a 32K PIAFS frame, and the PIAFS frame of 64Kbps is extracted as a 64K PIAFS frame.
FS protocol monitoring method. The gist of the invention described in claim 13 is that the 32KPIAFS frame MSB indicating the start of the 32KPIAFS frame is detected, and the 32KPIAFS frame is extracted based on the detection of the 32KPIAFS frame MSB. 12. A PIAFS protocol monitoring method according to any one of 12. According to another aspect of the present invention, a frame pulse synchronized with the 32K PIAFS frame is generated based on the detection of the 32K PIAFS frame MSB, and the 32 KPIAFS frame is extracted based on the generated frame pulse. The PIAFS protocol monitoring method according to any one of claims 9 to 13, wherein: The gist of the invention according to claim 15 is that the extracted 32KP
The IAFS frame is transmitted at 32 Kbps at 32 Kbps.
10. The method according to claim 9, wherein the data is converted into K serial data.
To the PIAFS protocol monitoring method according to any one of the first to fourth aspects. The gist of the invention described in claim 16 is:
The 64KPIAFS frame having the communication speed of 64 Kbps and the 32KPIA frame having the communication speed of 32 Kbps
16. The PIAFS protocol monitoring method according to claim 9, wherein the PIAFS protocol is monitored based on an AFS frame. The gist of the present invention resides in a storage medium storing a program capable of executing the PIAFS protocol monitoring method according to any one of claims 9 to 16.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an embodiment of a PIAFS protocol monitor device according to the present invention. FIG. 2 is a block diagram showing a configuration of a PIAFS frame extraction unit shown in FIG. 3 is 32K shown in FIG.
FIG. 4 is a block diagram illustrating a configuration of the PIAFS frame detection unit. FIG. 4 is a block diagram illustrating a configuration of the 32K PIAFS frame generation unit illustrated in FIG.

In the present embodiment, the PHS 102, the base stations 103 to 104, and the exchange 110 are connected between the PC terminal 101 having the PIAFS protocol communication function and the PIAFS protocol processing unit 106 built in the exchange 110. A PIAFS communication data consisting of bidirectional multiplexed PCM data communicated via a switch unit 105 incorporated in the PC, branches and inputs the data, and outputs a 64K PCM serial data with a communication speed of 64 Kbps; The PIAFS frame extraction unit 108 receives the 64K PCM serial data from the selection unit 107 and extracts a PIAFS frame. The protocol analyzer 109 analyzes the PIAFS frame extracted by the PIAFS frame extraction unit 108.

The channel selection unit 107 extracts PCM data of a designated time slot (hereinafter, referred to as TS) from the multiplexed PCM data, and converts bidirectional data into 64K PCM serial data each having a simple communication speed of 64 Kbps. And converted 64KP for each direction
The CM serial data is extracted from the PIAFS frame extraction unit 108
To enter.

The PIAFS frame extraction unit 108
32KP from 64KPCM serial data as shown in
IAFS frame is detected and D7 to D4-frame MS
Output B detection signal and 32KPIAFS detection signal 3
2KPIAFS frame detector 201, 64KPCM
64KPIAF that detects a 64KPIAFS frame from serial data and outputs a 64KPIAFS detection signal
S frame detection unit 202 and 32Kbps 32KPI
If it is detected that the communication is in the AFS frame,
A 32K PIAFS frame generation unit 203 that converts 64K PCM serial data into 32K serial data, and a data switching control unit 204 that switches and outputs 64K PCM serial data and 32K serial data upon switching of communication speed, P
The communication speed of CM data is 32Kbps or 64Kbps
bps, the switching of the communication speed is detected independently, and the communication speed of the PCM data is 32K.
In the case of bps, the data converted to 32K serial data, and when the communication speed of PCM data is 64Kbps,
The data at the same communication speed is input to the protocol analyzer 109 as PIAFS frame serial data.

The PIAFS frame extraction unit 108 determines the communication speed when the PCM data communication speed is 64 Kb.
In the case of ps, the determination is made by detecting the SYNC pattern of the 64K PIAFS frame. When the communication speed of the PCM data is 32 Kbps, the upper 4 bits (D7 bits to D4 bits) of the PCM data are valid data, and thus the determination is made by detecting a data pattern that is apparently equivalent to the SYNC pattern of the 32K PIAFS frame.

The PIAFS frame extraction unit 108
(1) and the PIAFS frame extraction unit 108 (2)
It has the same functions, one of which receives the transmission data from the PC terminal 101 and the other which receives the transmission data from the PIAFS protocol processing unit 106 and independently processes the bidirectional communication data.

32KPIAFS frame detector 201
Is a D7-MSB detection unit 3 that detects an MSB starting from D7 bit and outputs a D7-frame MSB detection signal.
01 and the MSB starting from D6 bit
A D6-MSB detection unit 302 that outputs a frame MSB detection signal, and a D5-MSB that detects an MSB starting from D5 bit and outputs a D5-frame MSB detection signal.
A detection unit 303 for detecting an MSB starting from D4 bits and outputting a D4-frame MSB detection signal;
SB detector 304, D7-MSB detector 301 and D6
-MSB detector 302 and D5-MSB detector 303 and D
D7 output from the 4-MSB detection unit 304
~ D4-The logical sum of the frame MSB detection signal is 32KPI
An OR circuit 305 that outputs the AFS detection signal to the data switching control unit 204.

32KPIAFS frame generator 203
Is the MSB of the 32K PIAFS frame after synchronization is established
Data delay unit 40 for delaying data so that
1, a clock divider 402 for generating a 32K synchronous clock of 32K serial data, and a frame pulse for generating a frame pulse for extracting a valid bit of 32KPIAFS data from 64KPCM serial data by a D7 to D4-frame MSB detection signal. Generator 40
3 and a data conversion unit 404 for converting 64K PCM serial data into 32K serial data.

The protocol analyzer 109 is given an instruction to start a protocol monitor in advance,
If a PIAFS frame serial data of ps or 64 Kbps is given, the communication speed is automatically determined and PI
PI triggered by detection of SYNC pattern of AFS frame
The monitoring of the AFS frame is started.

Next, the operation of the embodiment will be described in detail with reference to FIGS. FIG. 5 shows the PIAF shown in FIG.
FIG. 6 is a data configuration diagram of 64K PCM serial data input to the S frame extraction unit.
FIG. 7 is a timing chart for explaining the operation of the PIAFS frame detection unit.
5 is a timing chart for explaining an operation of an AFS frame generation unit.

PIAFS data communication is performed between the PC terminal 101 and the PIAFS protocol processing unit 106. The intermediate line for the evaluation of the PIAFS protocol is:
Switch unit 105 and PIAFS protocol processing unit 106
The PIAFS communication data composed of bidirectional multiplexed PCM data is branched between the two and input to the channel selection unit 107.
The channel selection unit 107 extracts, from the bidirectional multiplexed PCM data, PCM data for one TS instructed to monitor the channel communicated by PIAFS, and extracts the extracted PCM data.
The data is converted to 64KPCM serial data, and the converted 64KPCM serial data is transmitted to the PIAFS frame extraction unit 108 together with a 64K synchronization clock.

The bidirectional multiplexed PCM data input to the channel selection unit 107 may have any number of multiplexing lines and communication speeds, and may be branched at any point as long as it is a signal for branching PIAFS communication data. Also, bidirectional multiplex P
The CM data is transmitted from the PC terminal 101 to the P
The communication direction to the IAFS protocol processing unit 106, and vice versa, the PIAFS protocol processing unit 106 of the exchange 110
From the PC terminal 101 to the PC terminal 101.

In the PIAFS frame extraction unit 108, 6
A 32KPIAFS frame or a 64KPIAFS frame is detected bidirectionally and independently from 4KPCM serial data.

The PIAFS frame extraction unit 108
Kbps to 64Kbps or 64Kbps to 3
In order to detect the switching of the communication speed to 2 Kbps, the 32 KPIAFS frame detection unit 201 and the 64 KP
The IAFS frame detector 202 simultaneously detects the SYNC pattern of the PIAFS frame in both directions simultaneously.

Next, the 32K PIAFS frame detector 2
01 to 32KPI from 64KPCM serial data
An example of detecting the MSB and the SYNC pattern of the AFS frame will be described.

When communication is performed at 32 Kbps, speed matching with PCM data in the ISDN network is described in Recommendation I. 460, base stations 103-1
04 from the MSB indicating the beginning of the 32K PIAFS frame (D7 bit to
D4 bits) are data bits into which 32KPIAFS data can be inserted (the lower 4 bits are all “1”).
Data). In accordance with the regulations, the device connected to the switching network and performing the PIAFS protocol process sets the valid 4-bit data bit of the PCM data bit to P.
The IAFS data is divided and sequentially inserted. Therefore, P
CM data is 32KPIAFS data and invalid 4
This is data in which data of bits are mixed. Also, 3
Among the valid bits (D7 to D4) of the 2KPIAFS data, the MSB indicating the beginning of the 32KPIAFS frame is:
There is no definition of bits to be inserted, and any bits from D7 to D4 can be inserted.

Therefore, D7 bit to D4b shown in FIG.
Since there is a possibility that the MSB is inserted into the “it”, there are four patterns, and the MS starting from D7 bit
D7-MSB detecting section 301 for detecting B, and D6 bit
D6-MSB detector 30 for detecting the MSB starting from
2 and D5- to detect the MSB starting from D5 bit
MSB detector 303 and MSB starting from D4 bit
And a D4-MSB detection unit 304 that detects the MSB starting from each bit.

D7 to D4-MSB detectors 301 to 304
Has the same function except that the bit for detecting the MSB is different, so that the MSB inserted in the D5 bit
Is detected by the D5-MSB detection unit 303.

Since the data before the insertion of the 32K PIAFS frame is indefinite data, the MSB b
There is no condition to specify the it itself. Therefore, PIA
A synchronization establishment condition is set in which a SYNC pattern in a negotiation frame used when starting FS data communication is a synchronization pattern started from D5 bits. 3 starting from D5 bit as shown in FIG.
In the case of a 2K PIAFS frame, as shown in FIG.
Synchronization is established at the last bit of the NC pattern. That is, the synchronization establishment timing matches the detection condition with D6 bits, and the 32K PIAFS frame detection unit 201 sets the synchronization establishment timing to 32K bytes as the D5-MSB detection signal.
The PIAFS frame generation unit 203 is notified.

As can be seen from the above, 32KPIAFS
The frame detecting unit 201 can identify which bit of the MSB of the 32KPIAFS frame is used to establish synchronization by expecting that the synchronization is established in any of D7 bits to D4 bits into which the MSB of the 32KPIAFS frame can be inserted. Frame detection can be performed.

In order to switch to 32K serial data by the OR circuit 305, D7 bits to D4b
MSB at any time up to it, ie 32KPIAF
The data switching control unit 2 detects that the start of the S frame has been detected.
04 is notified.

Next, the 32K PIAFS frame generation unit 2
An example of generation of 32K serial data by C.03 will be described.
D7 to D from the 32K PIAFS frame detection unit 201
Valid bit of 32KPIAFS data from 64KPCM serial data by 4-frame MSB detection signal
Is extracted, a frame pulse is generated by the frame pulse generation unit 403. As shown in FIG.
Of the CM serial data, the timing (T_D) from the notified D7 to D4-frame MSB detection signal to D7 bit which is the valid bit of the next 32K PIAFS data
Since 5) is known, a frame pulse satisfying the timing is generated after the synchronization is established.

At the timing when the synchronization is established, M
Since 32KPIAFS data from the SB has elapsed, in order to monitor from the MSB of the 32KPIAFS frame, the data delay unit 401 delays the 32KPIAFS data so that the MSB of the 32KPIAFS frame is generated after synchronization is established.

Delay time T2 by data delay section 401
As shown in FIG. 7, the time from the MSB of the 32K PIAFS frame to the last bit of the SYNC pattern is set to T0, and the MSB starts from D5 bit.
Assuming that the time obtained by adding D7 bits and D6 bits to 0 is T1, the time from the establishment of the synchronization to the generation of the frame pulse is T_D5, so that the delay from the D7 bit of the valid data including the MSB to the start of the frame pulse is delayed. In order to do this, it is the time obtained by adding T1 and T_D5,
The data delay unit 401 delays the delay 3 by the delay time T2.
The 2KPIAFS data is transmitted to the data conversion unit 404. Further, the clock divider 402 divides the 64K synchronous clock to generate a 32K synchronous clock of 32K serial data, and transmits the generated 32K synchronous clock to the data converter 404.

In the data converter 404, the generated frame pulse and the delayed data are synchronized,
As shown in (1), valid 4 bits can be extracted from the 64K PCM serial data and converted to 32K serial data. Further, since the MSB of the 32KPIAFS frame starts from the D5th bit, the 32KPIAFS frame is formed at the timing shown in FIG.

Next, the 64K PIAFS frame detector 2
02 to 64KPI from 64KPCM serial data
Detection of MSB and SYNC pattern of AFS frame
This is performed by detecting a synchronization pattern from the 64KPCM serial data, and the 64KPIAFS frame detection unit 202 outputs a 64KPIAFS detection signal to the data switching control unit 204 when detecting a 64KPIAFS frame.

By the above operation, the 32KPIAFS frame and the 64KPIAFS frame can be detected, and the PIA
It is also possible to cope with the variable communication speed function defined in the FS2.1 version.

In the data switching control unit 204, the PIAFS
The SYNC pattern of the frame is defined as a negotiation frame and a synchronization frame. When the state transits to the data frame state, the synchronization pattern does not occur.
Therefore, when a PIAFS frame of one speed is detected, the detection signal is held and the output data is continued. Further, when the frame of the other speed is detected, the output data is switched, the output data is continuously performed according to the communication state, and the process is repeated.

The protocol analyzer 109 starts to accumulate 64KPIAFS data and 32KPIAFS data by detecting the negotiation pattern or the SYNC pattern of the synchronous frame specified by the PIAFS using the bidirectional PIAFS frame serial data and the synchronous clock. I do. The monitor data of the bidirectional PIAFS frame is displayed on the screen as needed.

As described above, according to this embodiment, even in the case of an exchange having a built-in PIAFS protocol processing, the PIAFS can be performed without using a frame pulse.
The PIAFS frame can be extracted only by the PCM data used for data communication and the synchronous clock, and the PIAFS communication data composed of multiplexed PCM data can be extracted inside the exchange.
IAFS protocol can be monitored and PIAF
There is an effect that an environment for monitoring PIAFS communication data up to S2.1 version can be provided.

Further, according to the present embodiment, the PCM data extracted from the PIAFS communication data in the exchange can be handled as simple serial data.
It has no electrical or logical communication standard such as SDN line, and has an IS for connecting PTE and TAP.
This has the effect of eliminating the need for a facility environment such as a DN line and a communication line.

It is to be noted that the present invention is not limited to the above embodiments, and that the embodiments can be appropriately modified within the scope of the technical idea of the present invention. Further, the number, position, shape, and the like of the constituent members are not limited to the above-described embodiment, but can be set to numbers, positions, shapes, and the like suitable for carrying out the present invention. In the drawings, the same components are denoted by the same reference numerals.

[0045]

The PIAFS protocol monitoring device and the PIAFS protocol monitoring method according to the present invention provide
Even in the case of an exchange having a built-in S protocol process, a PIAFS frame can be extracted only with PCM data for performing PIAFS data communication and a synchronous clock without using a frame pulse.
It is possible to monitor the PIAFS protocol of the PIAFS communication data composed of data, thereby providing an effect of providing an environment for monitoring the PIAFS communication data up to the PIAFS 2.1 version.

Further, the PIAFS protocol monitoring device and the PIAFS protocol monitoring method of the present invention provide a PCM extracted from PIAFS communication data in an exchange.
Since data can be treated as simple serial data, there is no electrical or logical communication standard such as ISDN line, and the equipment environment such as ISDN line for connecting PTE or TAP, communication line, etc. This has the effect of becoming unnecessary.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a PIAFS protocol monitor device according to the present invention.

FIG. 2 is a block diagram illustrating a configuration of a PIAFS frame extraction unit illustrated in FIG. 1;

FIG. 3 is a block diagram illustrating a configuration of a 32K PIAFS frame detection unit illustrated in FIG. 2;

FIG. 4 is a block diagram illustrating a configuration of a 32K PIAFS frame generation unit illustrated in FIG. 2;

FIG. 5 is a data configuration diagram of 64KPCM serial data input to a PIAFS frame extraction unit shown in FIG. 1;

FIG. 6 is a timing chart for explaining an operation of the 32K PIAFS frame detection unit shown in FIG. 2;

FIG. 7 is a timing chart for explaining an operation of the 32K PIAFS frame generation unit shown in FIG. 2;

[Explanation of symbols]

 101 PC terminal 102 PHS 103 to 104 Base station 105 Switch unit 106 PIAFS protocol processing unit 107 Channel selection unit 108 PIAFS frame extraction unit 109 Protocol analyzer 110 Switch 201 32KPIAFS frame detection unit 202 64KPIAFS frame detection unit 203 32KPIAFS frame generation unit 204 Data switching Control unit 301 D7-MSB detection unit 302 D6-MSB detection unit 303 D5-MSB detection unit 304 D4-MSB detection unit 305 OR circuit 401 Data delay unit 402 Clock division unit 403 Frame pulse generation unit 404 Data conversion unit

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Shuichiro Yanagisawa F-term (reference) 5K019 AC09 BA45 BB41 CC09 5K035 DD01 EE01 GG13 5K042 AA06 EA15 FA01, 1-44-2, Mita, Minato-ku, Tokyo JA01 5K067 AA42 BB04 DD25 EE02 EE10 EE16 EE24 EE71 LL08

Claims (17)

[Claims] 1. A PIAF for monitoring a PIAFS protocol of PIAFS communication data having a plurality of communication speeds.
An S protocol monitor device, comprising: a PIA for each communication speed from the PIAFS communication data
PIAFS frame extraction means for extracting an FS frame; and the PIA based on the PIAFS frame for each communication speed extracted by the PIAFS frame extraction means.
A PIAFS protocol monitor device comprising: a protocol analysis unit that monitors an AFS protocol. 2. The PIAFS frame extraction means, wherein:
2. The PIAFS according to claim 1, wherein the PIAFS frame for each communication speed is extracted from the PIAFS communication data, which is CM data, and a synchronization clock.
Protocol monitor device. 3. The PIAFS communication data comprises 64K serial data conversion means for converting the communication speed to 64K PCM serial data which is serial data of 64 Kbps, and the PIAFS frame extraction means is converted by the 64K serial data conversion means. 3. The PIAFS protocol monitor device according to claim 1, wherein the PIAFS frame for each communication speed is extracted from the 64K PCM serial data. 4. The communication speed of the PIAFS communication data is comprised of 32 Kbps and 64 Kbps, wherein the PIAFS frame extraction means extracts the 32 Kbps PIAFS frame as a 32 KPIAFS frame, and the 64 Kbps PIAFS. 64KPIA frame
4. A 64K PIAFS frame extracting means for extracting a frame as an FS frame.
The PIAFS protocol monitor device according to any one of the above. 5. The 32K PIAFS frame extraction means, wherein the 32K PIAFS frame extraction means indicates a start of the 32K PIAFS frame.
32K PIAFS for detecting PIAFS frame MSB
A frame MSB detection unit; and the 32K PIAFS frame extraction unit includes the 32K PIAFS frame extraction unit.
The 32KP by the PIAFS frame MSB detecting means
Based on the detection of the IAFS frame MSB, the 32K
5. The PIAFS protocol monitor device according to claim 1, wherein a PIAFS frame is extracted. 6. A frame pulse generator for generating a frame pulse synchronized with the 32K PIAFS frame based on the detection of the 32K PIAFS frame MSB by the 32K PIAFS frame MSB detector. 6. The PIAFS protocol monitor device according to claim 1, wherein the 32K PIAFS frame is extracted based on the frame pulse generated by a pulse generation unit. 7. The 32KPIAFS frame extracted from the 64KPCM serial data by the 32KPIAFS frame extracting means, and the communication speed of the 32KPIAFS frame is 32K.
7. The P according to claim 1, further comprising 32K serial data conversion means for converting the serial data into 32K serial data which is the serial data of bps.
IAFS protocol monitor. 8. The PIAFS frame extracting means includes: the 64K PIAFS frame having a communication speed of 64 Kbps and the 32 KPIA frame having a communication speed of 32 Kbps.
8. The PIAFS protocol monitor device according to claim 1, wherein an FS frame is selectively output to the protocol analysis unit. 9. A PIAF for monitoring a PIAFS protocol of PIAFS communication data having a plurality of communication speeds.
An S protocol monitoring method, comprising: a PIA for each communication speed from the PIAFS communication data
A PIAFS protocol monitoring method, comprising: extracting an FS frame; and monitoring the PIAFS protocol based on the extracted PIAFS frame for each of the communication speeds. 10. The PMI for each communication speed from the PIAFS communication data, which is PCM data, and a synchronization clock.
10. An IAFS frame is extracted.
The described PIAFS protocol monitoring method. 11. The PIAFS communication data is transferred to a 64KPC serial data having a communication speed of 64 Kbps.
The PIAFS protocol monitoring method according to claim 9, wherein the PIAFS protocol monitor method converts the PIAFS frame for each communication speed from the converted 64KPCM serial data. 12. The communication speed of the PIAFS communication data includes 32 Kbps and 64 Kbps, and the PIAFS frame of 32 Kbps is transmitted at 32 KPIA.
Extracting the PIAFS frame of 64 Kbps as 64 KPIA
10. The method according to claim 9, wherein the FS frame is extracted.
12. The PIAFS protocol monitoring method according to any one of claims 1 to 11. 13. A 32KPIAFS frame MSB indicating the start of the 32KPIAFS frame is detected, and based on the detection of the 32KPIAFS frame MSB,
13. The PIAFS protocol monitoring method according to claim 9, wherein the 32K PIAFS frame is extracted. 14. The MSB of the 32K PIAFS frame
Generating a frame pulse synchronized with the 32K PIAFS frame, based on the detection of
14. The PIAFS protocol monitoring method according to claim 9, wherein a PIAFS frame is extracted. 15. The PIAFS protocol monitoring method according to claim 9, wherein the extracted 32K PIAFS frame is converted into 32K serial data having a communication speed of 32 Kbps. 16. The communication method according to claim 6, wherein the communication speed is 64 Kbps.
4KPIAFS frame and the communication speed is 32Kbps
The PI based on the 32KPIAFS frame of
16. The PIAFS protocol monitoring method according to claim 9, wherein an AFS protocol is monitored. 17. A storage medium storing a program capable of executing the PIAFS protocol monitoring method according to claim 9. Description: