JP2648127B2 - Digital mobile communication system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital mobile communication system, and more particularly to a digital mobile communication system for trace-monitoring sequence data between a radio transmitting / receiving apparatus and an upper station or between a radio transmitting / receiving apparatus and a radio mobile station.

[0002]

2. Description of the Related Art In a conventional digital radio communication system,
To check the operation of an application in a wireless transceiver, a trace monitor system that monitors data processed by the application as it is (wireless transmission / reception) has been used.

[0003] A conventional digital radio communication system will be described with reference to the drawings.

FIG. 4 is a block diagram showing a conventional digital radio communication system.

In FIG. 4, in a conventional digital radio communication system, a collection program 2-5 collects operation information of a computer system 2-4 to be tested, stores the information in a collected data file 2-7, and then edits / outputs the information. Program 2-6
Processes the information stored in the collected information data file 2-7 and outputs a simple “Function Debugging Support Report” to L / P
Output to 2-8 and debug based on the output.

[0006]

In the above-mentioned conventional radio transmission / reception tray monitor system of the digital radio communication system, the exchange of data between the control station and the mobile station is sent to the trace tool without any distinction between layers and monitored. Therefore, it is difficult to grasp the processing status of data divided in each layer for each layer, and when a problem occurs between layers, it is not easy to analyze under what circumstances the problem occurred. was there.

[0007]

According to the digital mobile communication system of the present invention, a plurality of radio base stations are arranged under one control station, and a control channel signal and a voice channel signal from the control station are transmitted to the radio base station. A digital mobile communication system for transmitting and receiving between a station and a mobile station, comprising: a radio transmitting / receiving apparatus having a predetermined layer structure mounted in the radio base station; and a trace tool, wherein the radio transmitting / receiving apparatus includes the control station. A first layer signal processing means for performing signal processing on each of the layers 1, 2, and 3 of the control station when transmitting and receiving the sequence data between the mobile station and the mobile station; A second layer signal processing unit for performing signal processing of each of 1, 2, and 3, and a sequence data of the wireless transmitting and receiving apparatus and the sequence data of the second layer signal processing unit. Trace tool signal transmitting means for adding a layer identifier for identifying layers 1, 2, 3 to create a signal for the trace tool and transmitting the signal to the trace tool, wherein the trace tool receives the trace tool signal And a display means for displaying the signal content of each of the determined layers 1, 2, and 3.

[0008] A digital mobile communication system according to the present invention comprises a single control station, a plurality of mobile stations, and a plurality of radio transmission / reception devices for transmitting and receiving information on the plurality of mobile stations under the control of the control station. A trace tool for displaying a processing procedure of the wireless transmitting / receiving apparatus for each predetermined layer, wherein the control station has a first interface that interfaces with the wireless transmitting / receiving apparatus.
An interface unit, and a control station processing unit that controls the inside and the entire system, the mobile device is a second interface unit that interfaces with the wireless transmitting and receiving device,
A mobile unit processing unit for controlling the inside, wherein the wireless transmission / reception apparatus includes a transmitter and a receiver for the mobile unit, a layer 1 processing unit for performing predetermined layer 1 processing, and a predetermined layer A third interface unit for performing processing of Layer 2 and Layer 3 and including an interface to the control station and the trace tool, wherein the trace tool interfaces with the wireless transmitting / receiving device; A display unit for displaying information received from the wireless transmission / reception device for each of the layers 1, 2 and 3; wherein the layer 1 processing unit performs a first layer 1 processing from the mobile device in accordance with a predetermined layer 1 processing procedure. A digital signal processor for processing information of the first type;
And a first two-pole RAM for storing a processing result of the information of the second layer.
A ROM for storing layer 3 and layer 3 processing procedures, and an interface with the control station and the layer 2 and layer 3
A second I / O RAM that stores the processing results of the first and second layers, a serial I / O unit that interfaces with the trace tool and transmits the processing results of the first, second, and third layers to the trace tool; It includes a CPU that performs layer 2 and layer 3 processing and controls the inside.

[0009]

Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of the wireless transmission / reception apparatus and the trace tool in this embodiment viewed from software processing.

In FIG. 1, the embodiment is a control station 1-3 for controlling the entire system of the embodiment, and a mobile station 1-4.
A radio transmitting / receiving device 1-2 for transmitting / receiving information on the mobile device 1-4 under the control of the control station 1-3;
And a trace tool 1-1 for displaying the process of the second process for each predetermined layer, and the control station 1-3 has an interface (I) for interfacing with the radio transmitting / receiving device 1-2.
/ F) 1-3-2, and a control station processing unit 1-3-1 for controlling the inside and the whole system, and the mobile station 1-4 has an I / F1- 4-
2 and a mobile device processing unit 1-4-1 for controlling the inside, and the wireless transmitting / receiving device 1-2 has a transmitter (TX) 1-2-3 and a receiver (RX) for the mobile device 1-4. 1-2-4
And a layer 1 processing unit 1-2-2 for performing layer 1 processing
And a layer 2-3 processing unit 1-2-1 that performs layer 2 and layer 3 processing and includes an interface to the control station 1-3 and the trace tool.
2-2 is a digital signal processor (DSP) 1-2
-21 and a 2-pole RAM (2PRAM) 1-2-22, and a layer 203 process 1-2-1 is an I / F 1-3-2.
1-2-12 with an interface to
And a ROM 1-2 storing an application program 1-12-13a and an OS 1-12-13b.
13 and a serial I / O (SIO) 1-2-14 having an interface to the trace tool 1-1,
The trace tool 1-1 includes a display unit 1-1-1 for displaying each state of layers 1, 2, and 3, and an SIO 1-2-1.
4 and an I / F 1-1-2 that interfaces with the I.F.

Further, in FIG.
Wireless transmission / reception device 1 including a trace tool signal oscillation device D for receiving a processing result of an application 1-12-13a for performing the process 3 and an OS 1-12-13b for performing a layer 1 process and transmitting a signal for a trace tool 2 and a trace tool 1-1 connected to the wireless transmission / reception device 1-2 by a connection cable 1-5.

The control station 1-3 and the application 1-12
The trace tool signal transmission device D relays a control signal exchanged between the mobile device 1-4 and the OS-1-12-13b and the mobile device 1-4 from the outside of the wireless transmission / reception device 1-2 by relaying the control signal to the trace tool 1-1. The operations inside the layers 1, 2, and 3 are described as screen displays 1-1-1, 1-1 of the layers 1, 2, and 3.
Trace monitoring can be performed in 1-1-1-2 and 1-1-1-3.

FIGS. 3A and 3B show a frame format in the present embodiment, wherein FIG. 3A shows a frame format between a control station and a radio transceiver, and FIG. 3B shows a frame format between a radio transceiver and a mobile station. 4 shows a frame format between the trace tool signal transmitting device and the layer discriminating device in the present embodiment, and FIG. 4 (i) shows a frame format in the case of displaying a layer 1 screen.
(Ii) is a diagram showing a frame format in the case of a layer 2 screen display, and (iii) is a diagram showing a frame format in the case of a layer 3 screen display. 5A and 5B show an example of the processing in the present embodiment, in which FIG. 5A is a flowchart showing the processing of the trace tool signal processing device D, FIG. 5B is a flowchart showing the processing of the layer discriminating device E, and FIG. FIG. 7 is a diagram illustrating a layer structure in the wireless transmission / reception device, and FIG. 7 is a diagram illustrating an example of a screen display in the present embodiment.

Next, the operation of this embodiment will be described with reference to FIGS.

When processing signals between the control station 1-3 and the mobile station 1-4 in the radio transmitting / receiving apparatus 1-2, the layer 3 of the control station 1-3 and the layers 3 and 2 of the mobile station 1-4 are used. Regarding the exchange, the application 1-12-13a performs the management of the layer 1 of the mobile device 1-4 by the OS 1-12-13b. Application 1-12-13a is layer 2,
3 when processing the frame format ii) or ii)
i) and the frame format i) when the OS 1-2-2 processes the layer 1 to the trace tool signal transmitting apparatus D. The trace tool signal transmission device D attaches a layer identifier to the head portion like a frame format and adds a transmission frame format i ′ for each layer.
ii ') and iii').

Trace tool 1 receiving transmission frame format i ′) ii ′) iii ′) for each layer
-1, the layer discriminating device E from the added layer identifier
Distributes to the frame formats i) ii) iii),
Layer 1 screen display 1-1-1-1, layer 2 screen display 1-1-1-2, layer 3 screen display 1-1-1-3
(Display device 1-1-1 in the hardware block diagram of FIG. 1)
The content of the control signal is monitored in real time in layers 1 to 3 separately.

The processing of the trace tool signal transmitting device D and the layer discriminating device E will be described with reference to the flowcharts of FIGS.

Determination A by trace tool signal transmission device D
The frame format i), ii), or iii) is determined by three routes in each of 1, determination A2, and determination A3. A layer identifier is added to each of the routes in the yes route to form a transmission frame format i ′) ii ′) iii ′) and transmitted to the trace tool 1-1. The layer discriminating apparatus E reads the layer identifier, and determines the transmission frame format i ′), ii ′), or ii in decision B1, decision B2, or decision B3.
i ′) is determined, and the layer identifier is removed on each of the routes of yes, and the frame format i), ii), or iii) is displayed as it is.

However, among the frame formats shown in FIG. 3B, TEI (Terminal Equi) of the frame format (AB) between the control station and the radio transmitting / receiving device is used.
pment Identifier) or SAPI
(Service Access Point Ide
The address field and control field of the frame format (CF) between the wireless transmitting / receiving apparatus and the mobile station are defined in RCR-STD-27B (CCI).
This is a hijacking of the TT recommendation and a standard conforming to ISO 3309), and is not particularly essential for implementing a wireless transmission / reception trace monitor system with a layer discrimination function. The data itself in this portion is out of the scope of the present invention, and does not cause any layer determination by the layer determination device (E). However, it is possible to monitor from outside the apparatus by transparently collecting the information with the trace tool 1-1.

Next, with reference to FIG.
2 will be described. As shown in FIG. 6, the higher-order layer data is transmitted in such a manner as to ride on the lower-order layer data. Physical specifications are defined in layer 1, and layer 2 performs retransmission for surely transmitting data and functions to reliably transmit layer 3 service data. By monitoring each layer individually with this structure, it is possible to determine whether a failure has occurred at a physical level, a retransmission procedure, service data is erroneous, or the like.

In this embodiment, as described above, when the application 1-12-13a processes the layers 2 and 3, the frame formats ii) and iii) and the O
Since the frame format i) is transmitted when S1-12-13b processes the layer 1, it is possible to monitor particularly the portions marked with a star.

A description will be given of an example shown in FIG. 7 as to how a problem can be identified by looking at the screen.

In FIG. 7, ******* is written in the frame format i) shown in FIG.
ii) Contents of iii) as they are, and ▼ indicates control station 1-
3 indicates a signal in the direction of the mobile station 1-4, and ▲ indicates a signal in the direction of the mobile station 1-4 from the control station 1-3.

, Indicates a down trace signal from the control station 1-3,, indicates an up trace signal from the mobile station 1-4, and indicates a down trace signal sandwiched therebetween. It can be seen that the signal is surely transmitted up to layer 1 but is interrupted at layer 2. After that, although the signal from the mobile device 1-4 is referred to as Layer 1, Layer 2, or Layer 3, it can be seen that the downstream signal is still stagnated in Layer 2. Based on these trace results, it can be seen in real time that an abnormality has occurred in the upstream part of Layer 2.

[0026]

As described above, according to the present invention, a plurality of radio base stations are arranged under one control station, and a control channel signal and a voice channel signal from the control station are transmitted between the radio base station and the mobile station. In a digital mobile communication system that transmits and receives at, a wireless transmitting and receiving device having a layer structure mounted in a wireless base station, and a trace tool, the wireless transmitting and receiving device when exchanging signals between the control station and the mobile device, First layer signal processing means for performing each signal processing of the transmission / reception sequence data for layers 1, 2, and 3 of the control station;
Second layer signal processing means for performing signal processing on layers 1, 2, and 3 of the mobile device, and a layer identifier for identifying layers 1, 2, and 3 in sequence data of the wireless transmitting and receiving apparatus and the second layer signal processing means. Trace tool signal transmitting means for generating a signal for the trace tool and transmitting the signal to the trace tool, wherein the trace tool determines a layer from a layer identifier added to the received trace tool signal; and And display means for displaying the signal content of each of the determined layers 1, 2, 3 so that data exchange between the wireless transmitting / receiving apparatus and the mobile device can be individually confirmed for each of the layers 1, 2, and 3. As a result, even if a problem occurs between layers 1, 2, and 3, it is possible to easily confirm the status of each layer.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of the wireless transmission / reception device and the trace tool according to the embodiment as viewed from software processing.

FIGS. 3A and 3B show a frame format in the present embodiment, wherein FIG. 3A is a diagram showing a frame format between a control station and a wireless transmission / reception device, and FIG.

FIG. 4 shows a frame format between a trace tool signal transmitting device and a layer discriminating device in the embodiment;
(I) is a diagram showing a frame format when displaying a layer 1 screen, (ii) is a diagram showing a frame format when displaying a layer screen, and (iii) is a diagram showing a frame format when displaying a screen of a layer. is there.

5A and 5B show an example of a process in the present embodiment, wherein FIG. 5A is a flowchart showing a process of the trace tool signal processing device D, and FIG. 5B is a flowchart showing a process of the layer discriminating device E.

FIG. 6 is a diagram illustrating a layer structure in a wireless transmission / reception device according to the present embodiment.

FIG. 7 is a diagram showing an example of a screen display in the embodiment.

FIG. 8 is a block diagram showing a conventional example.

[Explanation of symbols]

1-1 Trace tool 1-1-1 Layer 1-3 screen display (hardware) 1-1-1-1 Layer screen display (software) 1-1-1-2 Layer 2 screen display (software) 1-1 1-3 Layer 3 screen display (software) 1-2 Wireless transceiver 1-2-11 Central Processin
g Unit (CPU) 1-2-13 ROM 1-2-12 2-pole RAM (2PRAM) 1-2-3 Transmitter (TX) 1-2-4 Receiver (RX) 1-2-14 Serial I / 0 (SIO) 1-2-21 Digital Signal Processor (DS
P) 1-2-22 2-pole RAM (2PRAM) 1-3 Control station 1-4 Mobile device 1-5 Connection cable 1-12-13a Application 1-12-13b OS A Control station between control station and wireless transmission / reception device I / F device B Between control station and wireless transmitting / receiving device Wireless transmitting / receiving device I /
F device C Radio transceiver I /
F device D Trace tool signal transmitting / receiving device E Layer discriminating device F Between wireless transmitting / receiving device and mobile device Mobile device I / F device

 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-153259 (JP, A) JP-A-53-28305 (JP, A)

Claims (3)

(57) [Claims] 1. A digital mobile communication system in which a plurality of radio base stations are arranged under one control station, and a control channel signal and a voice channel signal from the control station are transmitted and received between the radio base station and a mobile station. In the system, a radio transmission / reception device having a predetermined layer structure mounted in the radio base station and a trace tool are provided, and the radio transmission / reception device performs signal exchange between the control station and the mobile device. First, a first layer signal processing means for performing signal processing on each of the layers 1, 2, and 3 of the control station with respect to transmission / reception sequence data, and performs respective signal processing on layers 1, 2, and 3 of the mobile station. A second layer signal processing means, and a layer identifier for identifying the layers 1, 2, 3 added to the sequence data of the wireless transmission / reception device and the second layer signal processing means. Trace tool signal transmitting means for generating a signal for a race tool and transmitting the signal to the trace tool, wherein the trace tool determines a layer from the layer identifier added to the received trace tool signal And a display means for displaying the signal content of each of the determined layers 1, 2 and 3. 2. A control station, a plurality of mobile stations, a plurality of radio transmission / reception apparatuses for transmitting / receiving information on the plurality of mobile stations under the control of the control station, and processing steps of the radio transmission / reception apparatus. A trace tool for displaying a predetermined layer, the control station has a first interface unit for interfacing with the wireless transmitting and receiving device, and a control station processing unit for controlling the inside and the entire system; The mobile device has a second interface unit for interfacing with the wireless transmitting and receiving device, and a mobile device processing unit for controlling the inside, wherein the wireless transmitting and receiving device has a transmitter and a receiver for the mobile device, and a predetermined layer. Layer 1 for processing 1
A processing unit, and a layer 2/3 processing unit that performs predetermined layer 2 and layer 3 processing and includes an interface to the control station and the trace tool. A digital mobile communication system, comprising: a third interface unit for interfacing; and a display unit for displaying information received from the wireless transmission / reception device for each of the layers 1, 2, and 3. 3. A digital signal processor for processing first information from the mobile station in accordance with a predetermined layer 1 processing procedure, and a first signal for storing a processing result of the first information. The layer 2/3 processing unit includes a ROM that stores a predetermined layer 2 and layer 3 processing procedure, an interface with the control station, and a processing result of the layer 2 and layer 3 A second bipolar RAM for storing; a serial I / O unit for interfacing with the trace tool and transmitting processing results of the layers 1, 2 and 3 to the trace tool; 3
3. The digital mobile communication system according to claim 2, further comprising: a CPU for performing the processing described above and performing internal control.