JP2001160774A - Mobile radio communication system, its line and method for reducing load of processing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the cut of a down sound frame in between MS(mobile station) and to shorten time till the completion of hand-off by reducing the load of a line and reducing the load of the processing of BTS (radio base station) and BSC (exchange station). SOLUTION: When BSC (exchange station) 100 connected to BTS (radio base station) 200 by a 2M line (ATM line with the data quantity of 2 Mega Bit Per Second) takes in an up sound signal comprising PMR(Power Measurement Report) information from MS(mobile station) 300 through BTS (radio base station) 200, loads PMR information included in the up sound signal on the sound frame by data analysis and it is turned to BTS (radio base station) 200, BTS (radio base station) 200 takes out PMR information loaded on the sound frame and transmits only the sound frame to MS(mobile station) 300.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile radio communication system suitable for reducing the load on a line and the processing load on a BTS (radio base station) and BSC (switching station), and a method for reducing the load on the line and the processing. About.

[0002]

2. Description of the Related Art In a cellular system of a CDMA (Code Division Multiple Access) system conforming to IS (Interim Standard) -95, for example, as shown in FIG. 6, an MS (mobile station) 300 reports as a Signal signal in a voice frame. PMR (Power Measurement Repo)
rt) Based on the information, a BTS (wireless base station) 200 controls the power of downlink transmission.

[0003]

The above-mentioned B
The TS (wireless base station) 200 transmits and receives voice frames to and from the MS (mobile station) 300 at a period of 20 ms, but does not perform detailed analysis of the voice frames. For this reason, the analyzed information is transmitted to the B
The SC (switching station) 100 needs to return to the BTS (radio base station) 200.

In this case, a BTS (radio base station) 200
Performs power control of downlink transmission based on information returned from the BSC (switching station) 100. At this time, the returned PMR information (PMR_INFO) is transmitted to a BSC (switching station) 100 by a control signal frame different from a voice frame.
To a BTS (radio base station) 200.

[0005] However, when the MS (mobile station) 300 is at a handoff boundary or in a place where the radio wave condition is poor, the frequency of transmission of PMR information from the MS (mobile station) 300 increases. As a result, the number of return signals from the BSC (switching station) 100 also increases. Usually, frequent occurrence of a control signal frame in addition to a speech frame having a period of 20 ms causes a 2M line (2 Mega lines).
The load on the ATM line with the data amount of Bit Per Second increases, and transmission may not be possible.

Also, a BSC (exchange center) 100 and a BTS
(Radio base station) 200 may not be able to handle both because the processing load for transmission and reception increases. As a result, the voice frame may be dropped, and the voice frame with the MS (mobile station) 300 may be interrupted.

Further, IS (Interim Standard) -95
In a CDMA (Code Division Multiple Access) type cellular system conforming to the following, as shown in FIG.
Ha that BTS (radio base station) 200 reports as a Signal signal in a voice frame from MS (mobile station) 300
Hand off Completion (hereinafter referred to as H / O_Comp) for notifying the completion of nd off is transmitted to BSC (exchange office) 10
0.

Here, the BTS (radio base station) 200 is
Although frames are transmitted and received with the MS (mobile station) 300 at a period of 20 ms, detailed analysis of the frames is not performed. Therefore, the information can be determined only by the BSC (switching station) 100 that analyzes the frame, and the information received by the receiver that receives this H / O_Comp
The SC (switching station) 100 sends an information acquisition request frame to a BTS (radio base station) 200 using a control signal frame.

A BTS (radio base station) 200 is a BSC
(Exchange) In response to the information acquisition request from 100, the target Eb / N0 information at that time is returned in an information acquisition request response frame. The BSC (exchange center) 100 determines the target Eb /
The N0 information is stored as the latest one, and a transmission power control signal to which the target Eb / N0 information is added is generated. By transmitting a control signal frame (POW_CONT_PARA_SET message) for transmission power control to a BTS (wireless base station) 200, various parameters are given. And a BTS (wireless base station) 20
0 executes transmission power control.

At this time, the BSC (switching station) 100
The target Eb / N0 information received from the S (wireless base station) 200 is transmitted by a control signal frame different from a voice frame.

Here, when the MS (mobile station) 300 is near the handoff boundary, the MS (mobile station) 300
Signal frame transmission frequency increases, and as a result, BSC
(Exchange) The number of control signal frames from 100 also increases. Normally, frequent occurrence of control signal frames in addition to voice frames having a period of 20 ms increases the load on the 2M line, which may prevent transmission.

Also, BSC (switching station) 100, BTS
In the case of the (radio base station) 200, the processing load for transmission and reception increases in both cases, so that it may not be possible to handle the processing. As a result, a drop occurs in the voice frame, and the MS (mobile station) 300
Between the audio frames. In addition, Hand off
Sometimes, a control signal frame for one round trip is generated between the BTS (wireless base station) 200 and the BSC (switching station) 100 every time, so that there is a problem that the time until the completion of the hand-off becomes longer. .

The present invention has been made in view of such a situation, and has been made to reduce the load on a line and achieve a BTS (radio base station).
In addition, by reducing the processing load of the BSC (exchange station), it is possible to prevent the disconnection of the downlink voice frame with the MS (mobile station), and further to shorten the time until the completion of the hand-off. It is possible to provide a mobile radio communication system and a method of reducing the load on the line and processing thereof.

[0014]

According to a first aspect of the present invention, there is provided a mobile radio communication system comprising a BSC (switching station) and a BTS (radio base station) connected by a 2M line (an ATM line having a data amount of 2 Mega Bit Per Second). ) And a mobile station (MS) that performs wireless communication with a BTS (radio base station), wherein the BSC (switching station) comprises:
P from the MS (mobile station) via the BTS (wireless base station)
When an uplink audio signal including MR (Power Measurement Report) information is captured, PMR information included in the uplink audio signal is piggybacked on an audio frame by data analysis to perform BTS.
(Wireless base station), BTS (wireless base station)
It is characterized in that PMR information superimposed on a voice frame is extracted, and only the voice frame is transmitted to an MS (mobile station). The BSC (switching station) receives the first data (ATM signal) from the BTS (wireless base station).
, A first reception data processing unit that analyzes received data and extracts PMR information, and a P
A first transmission data processing unit that processes data (ATM signal) so that the MR information is piggybacked on the voice frame;
A first transmission unit for transmitting the processed data (ATM signal) to a BTS (radio base station), wherein the BTS (radio base station) receives the data (ATM signal) from the BSC (switching station). A second receiving unit for receiving the received data (AT
M signal), and a second reception data processing unit that processes only voice frames to the MS (mobile station) and data (ATM) for transmission to the BSC (switching station).
Signal), and a second transmitter for transmitting the processed data (ATM signal) to a BSC (exchange center). In addition, the first transmission data processing unit transmits an I-address to the MS (mobile station).
A downlink control signal processing unit that processes a TCH (traffic channel) control signal of S (Interim Standard) -95 and a control signal addressed to a BTS (radio base station), and a downlink control signal that processes a downlink audio signal addressed to an MS (mobile station). Audio signal processing unit and BTS
A transmission data creation unit for creating data (ATM signal) addressed to the (wireless base station), wherein the first reception data processing unit
IS (Interim Standard) -95 from MS (mobile station)
An uplink control signal processing unit for processing a TCH (traffic channel) control signal and a control signal from a BTS (radio base station), an uplink audio signal processing unit for processing an audio signal from an MS (mobile station), and a BTS ( A first reception data analysis unit that analyzes data (ATM signal) from the radio base station and, when PMR information is included, extracts the information and passes it to a transmission data creation unit; Can be. Further, the transmission data creation unit and the first reception data analysis unit may constitute a TCHC (traffic channel controller) and may be provided at a stage preceding the uplink control signal processing unit. Further, the second reception data processing unit is configured to transmit data (ATM) from a BSC (exchange center).
Signal (IS signal) based on the analysis result of the second received data analysis unit and the IS (Interim Stan
dard) -95 a signal processing unit and a radio processing unit for performing a process of transmitting a TCH (traffic channel) control signal to the radio unit. In addition, the BTS (wireless base station) transmits a voice frame from the MS (mobile station).
Upon receiving the Handoff Completion (H / O_Comp) for notifying the completion of Handoff, which is reported as a Signal signal, the latest target Eb / N0 information is included in the uplink Signal signal including the H / O_Comp (joint ride), and the BSC (joint ride) is performed. Exchange), and the BSC (exchange) is transmitted by the MS (mobile station).
The latest target E of BTS (wireless base station) when hand off
It is possible to receive the information of b / N0 from the BTS (radio base station), generate a transmission power control signal to which the information of the target Eb / N0 is added, and transmit it to the BTS (radio base station). The line and processing load reducing method of the mobile radio communication system according to claim 7 is a 2M line (2Mega line).
A BSC (exchange station) and a BTS (wireless base station) connected by an ATM line having a data amount of Bit Per Second,
An MS (mobile station) that performs wireless communication with a BTS (wireless base station), and a line and processing load reduction method for a mobile wireless communication system that reduces the line and processing load. Station), the PMR (Power Measuremen) from the MS (mobile station) via the BTS (wireless base station).
t Report), when the upstream audio signal including the information is taken in, the data analysis analyzes the PMR information included in the upstream audio signal to be piggybacked on the audio frame and returned to a BTS (radio base station); A base station) for extracting PMR information piggybacked on the voice frame and transmitting only the voice frame to the MS (mobile station). In the first step, B
Data (ATM signal) from TS (wireless base station)
A third step of receiving by the receiving unit, and analyzing and processing the received data by the first received data processing unit.
A fourth step of extracting the R information, and a fifth step of processing the data (ATM signal) so that the extracted PMR information is piggybacked on the voice frame by the first transmission data processing unit.
And a sixth step of transmitting the processed data (ATM signal) to the BTS (radio base station) by the first transmitting unit, and the second step includes the steps of: A seventh step of receiving the data (ATM signal) by the second receiving unit; and transmitting the received data (ATM signal) to the second step.
An eighth step of analyzing the received data by the received data processing unit and transmitting only the voice frame to the MS (mobile station), and the data (A) transmitted to the BSC (switching station).
A ninth step of processing the TM data) by the second transmission data processing unit;
And a tenth step of transmitting to a BSC (exchange center) by the transmitting unit of (1). In addition, the fifth
The process of IS (Interim Standa) addressed to MS (mobile station)
an eleventh step of processing a TCH (traffic channel) control signal of (rd) -95 or a control signal addressed to a BTS (radio base station) by a downlink control signal processor, and a downlink audio signal addressed to an MS (mobile station). A twelfth step of processing by the audio signal processing unit, and data (A
Thirteenth case in which the transmission data creation unit creates the TM signal)
The fourth step includes uplink control of an IS (Interim Standard) -95 TCH (traffic channel) control signal from an MS (mobile station) and a control signal from a BTS (wireless base station). Fourteenth processing performed by the signal processing unit
, A fifteenth step of processing an audio signal from an MS (mobile station) by an uplink audio signal processing unit, and a data (ATM signal) from a BTS (wireless base station) by a first received data analysis unit. If the analysis includes PMR information, a sixteenth step of extracting the information and passing it to the transmission data creation unit can be included. In the thirteenth step and the sixteenth step, the PMR information is extracted at a stage preceding the upstream control signal processing unit, and the processing of data (ATM signal) is performed so that the extracted PMR information is piggybacked on a voice frame. A seventeenth step to be performed can be included. In the eighth step, BS
An eighteenth step of analyzing data (ATM signal) from the C (exchange station) by the second received data analysis unit, and IS (Interim Staging) based on the analysis result of the second received data analysis unit.
andard) a nineteenth step of performing a process of transmitting a -95 TCH (traffic channel) control signal to the radio unit by the signal processing unit and the radio processing unit. In the first and second steps, a BTS (radio base station) transmits a Hand-off Completion (H) for notifying the completion of the Hand-off, which is reported as a Signal signal in a voice frame from the MS (mobile station). / O_Comp) and the latest target Eb / N0 information as H /
A twenty-first step of transmitting the signal to the BSC (exchange station) by including (sharing) the signal in the uplink signal signal including O_Comp and transmitting the signal to the BSC (exchange center);
When the MS (mobile station) hands off by the (exchange station),
A twenty-first step of receiving the latest target Eb / N0 information of the BTS (radio base station) from the BTS (radio base station), and generating a transmission power control signal to which the information of the target Eb / N0 is added to generate a BTS (radio base station). 22. transmitting to the base station). In the mobile radio communication system and the method for reducing the load of the line and the processing according to the present invention, a 2M line (2Meg) is transmitted to a BTS (radio base station).
a BSC (switching station) connected by an ATM line with a data amount of Bit Per Second (PMR) from a mobile station (MS) via a BTS (radio base station)
Report), the upstream audio signal including the information is taken in, and the PMR information included in the upstream audio signal is piggybacked on the audio frame by data analysis and returned to the BTS (radio base station). Take out the shared PMR information and MS only the audio frame
(Mobile station) to reduce line load and BT
The processing load of S (wireless base station) and BSC (switching station) is reduced.

[0015]

Embodiments of the present invention will be described below.

(First Embodiment)

FIG. 1 is a block diagram showing a first embodiment of the mobile radio communication system of the present invention, FIG. 2 is a block diagram for explaining details of the mobile radio communication system of FIG. 1, and FIG. 2 is a time chart for explaining the operation of the mobile radio communication system of FIG. In the drawings described below, the same reference numerals are given to portions common to FIGS. 6 and 7.

The mobile radio communication system shown in FIG.
C (exchange station) 100 and BTS (wireless base station) 200 are provided. The BSC (switching station) 100 and the BTS (wireless base station) 200 are connected by a 2M line (ATM line having a data amount of 2 Mega Bit Per Second) 400.

The BSC (switching station) 100 includes a transmission data processing unit 101, a reception data processing unit 102, a transmission unit 103, and a reception unit 104.

A transmission data processing section 101 as a first transmission data processing section processes data (ATM signal) to be transmitted to a BTS (radio base station) 200. In processing this data, PMR information (PMR_INFO) to be returned to the BTS (radio base station) 200 is piggybacked on the voice frame.

The received data processing section 102 as a first received data processing section analyzes the received data (ATM signal). The transmission unit 103 as the first transmission unit transmits the data (AT
M signal) to a BTS (radio base station) 200. The receiving unit 104 as the first receiving unit receives data (ATM signal) from the BTS (wireless base station) 200.

A BTS (wireless base station) 200 performs wireless communication with an MS (mobile station) 300 described later, and includes a receiving unit 201, a transmitting unit 202, and a received data processing unit 2.
03 and a transmission data processing unit 204.

The receiving unit 201 as a second receiving unit
The data (ATM signal) from the SC (switching station) 100 is received. The transmitting unit 202 as the second receiving unit has a BSC
(Exchange) Transmits data (ATM signal) to 100.
Received data processing unit 20 as second received data processing unit
Reference numeral 3 analyzes data (ATM signal) received from the BSC (switching station) 100. A transmission data processing section 204 as a second transmission data processing section processes transmission data to the BSC (switching station) 100.

FIG. 2 shows details of the mobile radio communication system shown in FIG.

As shown in FIG. 2, a BSC (switching station) 10
0 transmission data processing section 101 is downlink control signal processing section 1
01a, a downlink audio signal processing unit 101b, and a transmission data creation unit 101c.

Here, the downlink control signal processing unit 101a
IS (Interim Standard) addressed to MS (mobile station) 300-
95 TCH (traffic channel) control signals and BTS
(Radio base station) Processes a control signal addressed to 200.

The downstream voice signal processing section 101b processes a downstream voice signal addressed to the MS (mobile station) 300. The transmission data creation unit 101c transmits the A to the BTS (wireless base station) 200
Create a TM signal.

The reception data processing unit 102 includes an uplink control signal processing unit 102a, an uplink audio signal processing unit 102b, and a reception data analysis unit 102c.

Here, the uplink control signal processing unit 102a
IS (Interim Standard) from MS (mobile station) 300
-95 TCH (traffic channel) control signal and BT
The control signal from the S (radio base station) 200 is processed. However, the uplink control signal processing unit 102a does not process the PMR information.

The upstream voice signal processing section 102b processes a voice signal from the MS (mobile station) 300. The reception data analysis unit 102c as the first reception data analysis unit
The data (ATM signal) from the S (wireless base station) 200 is analyzed, and if PMR information is included, the information is extracted and passed to the transmission data creation unit 101c.

Here, the transmission data creation unit 101c
And the reception data analysis unit 102c constitute a TCHC (traffic channel controller).

As shown in FIG. 2, the reception data processing unit 203 includes a reception data analysis unit 203a and a signal processing unit &
A wireless processing unit 203b is provided.

The reception data analysis section 203a as a second reception data analysis section analyzes data (ATM signal) from the BSC (switching station) 100. The signal processing unit & wireless processing unit 203b performs a process of transmitting a TCH (traffic channel) control signal of IS (Interim Standard) -95 to a wireless unit (not shown) based on the analysis result of the reception data analysis unit 203a.

Next, the operation of the mobile radio communication system having such a configuration will be described.

First, in IS (Interim Standard) -95, a voice frame is generated at a period of 20 ms for both upstream and downstream. In the BTS (wireless base station) 200, the MS
(Mobile station) The transmission and reception of voice frames to and from the mobile station 300 are controlled. Voice frame analysis is performed by BSC (Exchange) 100
Has gone.

On the other hand, power control for downlink transmission performed by BTS (radio base station) 200 is performed using PMR information reported by MS (mobile station) 300. Therefore, it is necessary for the BSC (switching station) 100 to extract PMR information on a voice frame from the MS (mobile station) 300 to the BTS (radio base station) 200 and send it back.

Therefore, as shown in FIG. 3, in this embodiment, the returning PMR information (PMR_INFO) is piggybacked on the audio frame. As described above, the sharing with the voice frame is performed by the transmission data processing unit 10 shown in FIG.
1 does. More specifically, the reception data analysis unit 102c in FIG. 2 analyzes the data (ATM signal) from the BTS (wireless base station) 200 and, if PMR information is included, extracts the information and transmits the transmission data. Creation unit 101c
Pass to Then, the transmission data creation unit 101c
(Radio base station) When creating data (ATM signal) addressed to 200, PMR information (PMR_INFO) is piggybacked on a voice frame.

In this case, the length of the voice frame is increased and the load on the 2M line 400 is correspondingly increased. However, since a total of 13 bytes of the header and the footer information for transmitting and receiving the voice frame on the 2M line 400 are reduced, the line length is reduced. Is significantly lower.

The PMR information is usually analyzed by, for example, the uplink control signal processing unit 102a shown in FIG. 2, but in this embodiment, it is analyzed by the reception data analysis unit 102c preceding the uplink control signal processing unit 102a. As a result, the return time to the BTS (wireless base station) 200 is reduced.

Further, a BSC (exchange center) 100 and a BT
Since the processing load for reducing the processing for transmitting and receiving one frame in both the S (wireless base station) 200 is reduced, the discard of the frame that cannot be processed in both can be prevented.

[0042] PMR information to be shared (PMR_INF)
O) is taken out by a BTS (wireless base station) 200,
It is not transmitted to MS (mobile station) 300. Therefore, there is no effect on the MS (mobile station) 300.

As described above, the load of the 2M line 400 and the BS
C (exchange center) 100 and BTS (wireless base station) 200 reduce the processing load, so
Since the 0% processing is performed, a sound interruption due to a frame dropout is prevented.

As described above, in the first embodiment, the BT
S (wireless base station) 200, 2M line (2 Mega Bit
A BSC (switching station) 100 connected by a per second data amount ATM line) 400 transmits a PMR from an MS (mobile station) 300 via a BTS (wireless base station) 200.
(Power Measurement Report) When an uplink audio signal including information is taken in and PMR information included in the uplink audio signal is piggybacked on an audio frame by data analysis and turned back to a BTS (radio base station) 200, a BTS (radio base station) 2
00 extracts PMR information superimposed on a voice frame, and transmits only the voice frame to the MS (mobile station) 300.

In this case, since the processing of the control signal frame, which has been conventionally performed, is omitted, the load on the line and the processing load on the BTS (radio base station) 200 and the BSC (switching station) 100 can be reduced. , BSC (Exchange) 100
And the BTS (radio base station) 200 reduce the processing load due to the reduction of the processing for transmitting and receiving one frame, thereby preventing discard of frames that cannot be processed by both, and thus reducing the number of MSs. (Mobile station) can be prevented from being dropped.

In the first embodiment, the analysis of the PMR information is performed by the reception data analysis unit 102c at the preceding stage of the uplink control signal processing unit 102a.
The time required to return to S (wireless base station) 200 can be reduced.

(Second Embodiment) FIG. 4 is a block diagram showing a second embodiment of the mobile radio communication system of the present invention, and FIG. 5 explains the operation of the mobile radio communication system of FIG. It is a time chart for. In the drawings described below, the same parts as those in FIG. 1 are denoted by the same reference numerals, and redundant description will be omitted.

The mobile radio communication system shown in FIG.
Although the configuration is substantially the same as that of the BTS (radio base station) 200, the transmission power value of the MS (mobile station) 300 included in the BTS (radio base station) 200 is reported according to a control signal from the BSC (switching station) 100. They differ in the points they take.

Next, the operation of the mobile radio communication system having such a configuration will be described.

First, when performing downlink transmission power control during hand-off in IS (Interim Standard) -95, as shown in FIG.
It is in a state of receiving radio waves from one or more sectors or a BTS (wireless base station) 200. At this time, BTS
The (radio base station) 200 needs to make the downlink transmission power values of the handoff source and the handoff destination equal.

Therefore, the BSC (exchange center) 100
When the S (mobile station) 300 hands off, information on the latest target Eb / N0 of the BTS (radio base station) 200 is received from the BTS (radio base station) 200, and the latest target Eb / N is received.
Save 0.

Further, the BTS (wireless base station) 200
Hand o for notifying the completion of Hand off, which is reported as a Signal signal in a voice frame from S (mobile station) 300
ff When Completion (H / O_Comp) is received, the latest target Eb / N0 information is sent to the upstream Si including H / O_Comp.
It is included in the gnal signal (carpool) and transmitted to the BSC (switching station) 100.

In this case, the voice frame length increases and the load on the 2M line 400 increases.
Since a total of 13 bytes of header and footer information for transmitting and receiving a voice frame on the line 400 are reduced, the load state of the line is significantly reduced.

Next, the BSC (switching station) 100 stores the target Eb / N0 information as the latest one, and generates a transmission power control signal to which the target Eb / N0 information is added. Next, by transmitting a control signal frame (POW_CONT_PARA_SET message) for transmission power control to BTS (radio base station) 200,
Give various parameters. Then, the BTS (wireless base station) 200 executes transmission power control.

As described above, in the second embodiment, B
A TS (wireless base station) 200 allows an MS (mobile station) 30
Hand off Completion for notifying the completion of Hand off, which is reported as a Signal signal in the voice frame from 0
(H / O_Comp), the latest target Eb / N
0 information is included in the uplink Signal signal including H / O_Comp (joint) and transmitted to the BSC (switching station) 100, and the BSC
(Exchange) 100, MS (mobile station) 300 is Hand off
The latest target Eb of the BTS (wireless base station) 200
When receiving the information of / N0, a transmission power control signal to which the information of the target Eb / N0 is added is generated to generate a BTS (radio base station).
200.

Therefore, the conventional BTS (radio base station) 20
Since the process of transmitting and receiving the frame of the information acquisition request and the information acquisition response between the BSC (switching station) 100 and the BSC (switching station) 100 is reduced, the processing of both sides is performed as in the first embodiment. MS can be prevented from discarding frames that cannot be deleted.
(Mobile station) It is possible to prevent the disconnection of the downlink voice frame with the mobile station 300 and to shorten the time until the completion of the hand-off.

Since the load on the 2M line 400 and the processing load on the BSC (switching station) 100 and the BTS (radio base station) 200 are reduced, 100% processing of voice frames is performed as in the first embodiment. As a result, interruption of sound due to missing frames is prevented.

[0057]

As described above, according to the mobile radio communication system and the line and processing load reducing method according to the present invention,
2M line (2 Mega Bit Pe) for BTS (wireless base station)
r The BSC (switching station) connected by an ATM line with a data amount of Second is transmitted via the BTS (wireless base station) to the MS.
(Power Measurement Report) from (mobile station)
By capturing the upstream audio signal containing information and analyzing the data,
When the PMR information included in the uplink audio signal is piggybacked on the audio frame and returned to the BTS (wireless base station), the BTS
PM that (wireless base station) is piggybacking on voice frame
R information is extracted and only the voice frame is MS (mobile station)
To reduce the load on the line and the load on the processing of the BTS (radio base station) and BSC (switching station), so that the downlink voice frame with the MS (mobile station) can be transmitted. Disconnection can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a mobile radio communication system according to the present invention.

FIG. 2 is a block diagram illustrating details of the mobile radio communication system of FIG. 1;

FIG. 3 is a time chart for explaining an operation of the mobile radio communication system of FIG. 1;

FIG. 4 is a block diagram illustrating a mobile radio communication system according to a second embodiment of the present invention.

5 is a time chart for explaining an operation of the mobile radio communication system of FIG.

FIG. 6 is a time chart for explaining an operation of a conventional mobile radio communication system.

FIG. 7 is a time chart for explaining an operation of a conventional mobile radio communication system.

[Description of Code] 100 BSC (Exchange) 101, 204 Transmission data processing unit 101a Downlink control signal processing unit 101b Downlink voice signal processing unit 101c Transmission data creation unit 102, 203 Receive data processing unit 102a Uplink control signal processing unit 102b Uplink Voice signal processor 102c Received data analyzer 103, 202 Transmitter 104, 201 Receiver 200 BTS (wireless base station) 203a Received data analyzer 203b Signal processor & wireless processor 300 MS (mobile station) 400 2M line

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5K030 GA11 HA08 HB01 JA11 JL01 KA13 KA19 LA08 MA04 5K067 AA28 CC10 DD43 DD57 EE02 EE10 EE16 EE71 FF16 GG08 9A001 BB04 CC05 EE02 FF01 GG03 HZ15 JJ12

Claims (12)

[Claims] 1. Wireless communication between a BSC (switching station) and a BTS (wireless base station) connected by a 2M line (an ATM line having a data amount of 2 Mega Bit Per Second) and the BTS (wireless base station) A mobile station (MS) that performs a power measurement (PMS) from the MS (mobile station) via the BTS (radio base station).
ement Report), when the upstream voice signal including the information is captured, the data analysis analyzes the PM included in the upstream voice signal.
R information is piggybacked on a voice frame and returned to the BTS (radio base station). The BTS (radio base station) extracts the PMR information piggybacked on the voice frame, and extracts only the voice frame from the MS (radio base station). (Mobile station). 2. The BSC (exchange center), wherein the BTS
A first receiving unit that receives data (ATM signal) from the (wireless base station); a first receiving data processing unit that analyzes the received data and extracts the PMR information; A first transmission data processing unit that processes data (ATM signal) so that information is piggybacked on a voice frame; and a first transmission that transmits the processed data (ATM signal) to the BTS (wireless base station). A BTS (radio base station), a second receiving unit that receives data (ATM signal) from the BSC (switching station), and analyzes the received data (ATM signal). A second received data processing unit that processes only the voice frame to the MS (mobile station); and data (ATM) for transmitting to the BSC (switching station).
2) a second transmission data processing unit for processing the signal (signal), and a second transmission unit for transmitting the processed data (ATM signal) to the BSC (switching station). A mobile wireless communication system according to claim 1. 3. The transmission data processing unit according to claim 1, wherein the first transmission data processing unit is an IS (Interim Standard) -9 addressed to the MS (mobile station).
5 TCH (traffic channel) control signal and the BT
A downlink control signal processing unit that processes a control signal destined for S (radio base station); a downlink audio signal processing unit that processes a downlink audio signal destined for the MS (mobile station); A transmission data creation unit for creating data (ATM signal), wherein the first reception data processing unit includes an IS (Interim Standard) from the MS (mobile station).
95 TCH (traffic channel) control signals and B
An uplink control signal processing unit for processing a control signal from a TS (radio base station); an uplink audio signal processing unit for processing a voice signal from the MS (mobile station); and data from the BTS (radio base station) (ATM signal)
The mobile radio communication according to claim 2, further comprising: a first reception data analysis unit that extracts the PMR information when the PMR information is included and passes the information to the transmission data creation unit. system. 4. The transmission data creation section and the first reception data analysis section constitute a TCHC (traffic channel controller) and are provided before the uplink control signal processing section. The mobile radio communication system according to claim 3, wherein 5. The second reception data processing unit, wherein the second reception data analysis unit analyzes data (ATM signal) from the BSC (exchange center), and the second reception data analysis unit analyzes the data (ATM signal). Based on the result, IS
The mobile radio communication system according to claim 2, further comprising a signal processing unit and a radio processing unit that performs a process of transmitting a TCH (traffic channel) control signal of (Interim Standard) -95 to the radio unit. 6. The BTS (radio base station) includes the MS
Handoff Comple to report the completion of Handoff, which is reported as a Signal signal in a voice frame from (mobile station)
Option (H / O_Comp), the latest target Eb
/ N0 information is included (joint-up) in an uplink Signal signal including H / O_Comp and transmitted to the BSC (exchange station).
ff, the latest target Eb of the BTS (wireless base station)
/ N0 information is received from the BTS (radio base station), and a transmission power control signal to which the target Eb / N0 information is added is generated and transmitted to the BTS (radio base station). Item 2. The mobile radio communication system according to item 1. 7. Radio communication between a BSC (switching station) and a BTS (wireless base station) connected by a 2M line (an ATM line having a data amount of 2 Mega Bit Per Second) and the BTS (wireless base station) And an MS (mobile station) that performs the communication, and reduces the load of the line and the processing of the mobile radio communication system that reduces the load of the line and the processing, wherein the BTS (the radio base station) PMR (Power) from the MS (mobile station)
When an uplink audio signal including measurement report information is captured, the PMR information included in the uplink audio signal is piggybacked on an audio frame by data analysis, and the BTS
A first step of returning to the (radio base station); and extracting the PMR information piggybacked on the voice frame by the BTS (radio base station) and transmitting only the voice frame to the MS (mobile station). A method for reducing the load on lines and processing in a mobile radio communication system, comprising: a second step. 8. The first step includes: data (ATM signal) from the BTS (wireless base station)
A third step of receiving the received PMR information by a first receiving unit, a fourth step of analyzing the received data by a first received data processing unit, and extracting the PMR information, The data (A) is transmitted by the first transmission data processing unit so as to piggyback on the voice frame.
A fifth step of processing the TM data) and a sixth step of transmitting the processed data (ATM signal) to the BTS (radio base station) by a first transmitter. A step of receiving data (ATM signal) from the BSC (exchange station) by a second receiving unit; and a step of receiving the received data (ATM signal) by a second received data processing unit. An eighth step of performing analysis processing and transmitting only the voice frame to the MS (mobile station); and data (ATM) for transmitting to the BSC (switching station).
Ninth signal) is processed by the second transmission data processing unit.
The mobile radio according to claim 7, further comprising: a step of transmitting the processed data (ATM signal) to the BSC (switching station) by a second transmission unit. A method for reducing the load on lines and processing of a communication system. 9. The fifth step includes: an IS (Interim Standard) -9 addressed to the MS (mobile station).
5 TCH (traffic channel) control signal and the BT
An eleventh step of processing a control signal addressed to S (radio base station) by a downlink control signal processing unit; and a twelfth step of processing a downlink audio signal addressed to the MS (mobile station) by a downlink audio signal processing unit. And a thirteenth step of creating data (ATM signal) addressed to the BTS (wireless base station) by a transmission data creation unit. The fourth step includes: IS (MS) from the MS (mobile station). Interim Standard)-
95 TCH (traffic channel) control signals and B
A fourteenth step of processing a control signal from a TS (radio base station) by an uplink control signal processing unit, a fifteenth step of processing a voice signal from the MS (mobile station) by an uplink voice signal processing unit, Data (ATM signal) from the BTS (wireless base station)
9. A sixteenth step in which the first received data analysis unit analyzes the received data, and when PMR information is included, a sixteenth step of extracting the information and passing it to the transmission data creation unit. 3. The method for reducing the load on lines and processing of a mobile radio communication system according to item 1. 10. The thirteenth step and the sixteenth step include extracting the PMR information at a stage preceding the uplink control signal processing unit and performing data sharing so that the extracted PMR information is piggybacked on an audio frame. The method of claim 9, further comprising a seventeenth step of performing (ATM signal) processing. 11. An eighteenth step, wherein an eighteenth step of analyzing data (ATM signal) from the BSC (switching station) by a second reception data analysis unit, and the second reception data analysis IS based on the analysis results of
9. A nineteenth step of performing a process of transmitting a TCH (traffic channel) control signal of (Interim Standard) -95 to the radio unit by the signal processing unit and the radio processing unit. A line and processing load reduction method for a mobile radio communication system. 12. The first and second steps are performed by the BTS (radio base station) and the MS (mobile station).
As a signal in the audio frame from
Hand off Completion (H
/ O_Comp), and including the latest target Eb / N0 information in the uplink Signal signal including H / O_Comp (spooling) and the BSC (switching station).
The MS (mobile station) by the BSC (switching station).
a 21st step of receiving the latest target Eb / N0 information of the BTS (radio base station) from the BTS (radio base station) when the nd off is performed, and a transmission power control adding the target Eb / N0 information. No. 22 for generating a signal and transmitting it to the BTS (radio base station)
The method of claim 7, further comprising the steps of: