JP2002064870A - Wireless communication system - Google Patents

Abstract

(57) [Summary] [Problem] To add a free communication channel information to a radio channel that a radio base station apparatus constantly transmits, thereby increasing the probability of success in calling a radio mobile station apparatus, and To provide a wireless communication system in which processing for each call does not occur in a station device. SOLUTION: A main control unit 103 of a radio base station apparatus 101 is provided.
Detects the number of available communication channels at any time, and broadcasts the detected information on the number of available communication channels from the wireless unit 104 to the wireless area. The main control unit 106 of the wireless mobile station device 102 determines whether or not a call can be made at the present time based on the information on the number of available communication channels received by the wireless unit 107.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication system such as a portable telephone system and a PHS system.

[0002]

2. Description of the Related Art In a radio communication system such as a portable telephone system or a PHS system, a plurality of radio mobile station devices are simultaneously connected to one radio base station device via a radio line for communication. Here, the number of communication channels that one wireless base station device can allocate to each wireless mobile station device is limited.

[0003] Therefore, when the radio base station apparatus receives a new call message from the radio mobile station apparatus when all the communication channels are in use, the radio base station apparatus transmits a signal indicating that there is no available line to the radio mobile station apparatus. The data is transmitted to the station device. This notifies the caller that the call has been rejected.

However, a 16 Hz signal indicating "busy" is usually used as a signal indicating that there is no free line, so that the caller rejects the call when the called party is talking. It is not possible to recognize whether the communication is due to the use of all communication channels. Even if the cause of the call rejection is that all communication channels are being used, the caller manually re-calls the call as in the case where the called party is busy.

In order to solve this problem, for example, in Japanese Patent Laid-Open Publication No. Hei 6-252846 (radio communication system), when a call request from a radio mobile station device is received when there is no available communication channel, the radio base station It has been proposed that the station device transmit a communication channel free message to the radio mobile station device when a free communication channel occurs thereafter to perform automatic re-calling.

[0006]

However, in the above-mentioned conventional technique, a call message is transmitted at least once from the radio mobile station apparatus even when there is no available communication channel, and unnecessary radio waves are generated. Further, the radio base station apparatus reserves a communication channel for each call message from each radio mobile station apparatus, and transmits a communication channel empty message to the reserved radio mobile station apparatus every time an empty communication channel is generated. Therefore, there is a problem that the processing load is large.

[0007] The present invention has been made in view of such a point, and by adding vacant communication channel information to a radio channel constantly transmitted by a radio base station apparatus, a radio mobile station apparatus at the time of calling can be used. An object of the present invention is to provide a wireless communication system having a high probability of success and in which processing for each call does not occur in a wireless base station device.

[0008]

SUMMARY OF THE INVENTION A radio communication system according to the present invention comprises a radio base station apparatus and a radio base station connected to the radio base station apparatus via a radio line in a radio area formed by the radio base station apparatus. In a wireless communication system including a mobile station device, the wireless base station device detects the number of free communication channels at any time, and transmits the detected free communication channel number information in the wireless area, and transmits information on the number of free communication channels, Wherein the radio mobile station apparatus comprises: a call permission / non-permission determining unit that determines, based on the information on the number of vacant communication channels wirelessly received, whether or not a call can be transmitted at the present time at which the call has been transmitted. take.

[0009] According to this configuration, the transmission condition of the call signal from the radio mobile station device is always that the radio base station device has an available communication channel. High and unnecessary radio waves are not transmitted from the wireless mobile station device.

[0010] In the wireless communication system of the present invention, the outgoing / incoming call judging means, for an outgoing call requesting the provision of various communication services used by the caller, executes the requested communication service. A configuration is adopted in which the number of communication channels required to be provided is compared with the information on the number of free communication channels wirelessly received to determine whether or not a call can be made.

[0011] According to this configuration, the callability is determined in consideration of the service used by the caller. Therefore, even when using a service that uses a plurality of communication channels, such as high-speed data transfer, the call is not transmitted. Is high, and unnecessary radio waves are not transmitted from the wireless mobile station device.

Further, the wireless communication system of the present invention employs a configuration including an idle communication channel number information display means for displaying the idle communication channel number information wirelessly received on a display as character or graphic information.

[0013] According to this configuration, the user of the wireless mobile station device can always recognize the number of available communication channels, so that unnecessary call operation can be prevented.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The gist of the present invention is to add free communication channel information to a radio channel that is always transmitted by a radio base station apparatus, and to allow a radio mobile station apparatus to make a call based on the free communication channel information. By performing the determination, it is possible to construct a wireless communication system in which the probability of success at the time of calling the wireless mobile station device is high, and processing for each call does not occur in the wireless base station device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a configuration of a wireless communication system according to one embodiment of the present invention. As shown in FIG. 1, the wireless communication system includes a wireless base station device 101 connected to a public network, and the wireless base station device 101.
In the wireless area formed by the wireless base station device 1
Mobile station device 10 connected to the wireless communication device 01 via a wireless line
And 2. This wireless communication system is a mobile phone system, a PHS system, or the like.

Main control section 103 of radio base station apparatus 101
Implements the original function of the base station by program control and also implements the function of detecting the number of empty channels in the present embodiment. The main control unit 103 is connected to a wireless unit 104 that forms a wireless line in a wireless area and performs wireless communication with the wireless mobile station device 102, and a network interface unit 105 that connects to a public network or the like. I have.

Main control unit 106 of radio mobile station apparatus 102
Realizes the original function of the mobile station by program control, and also realizes the function of determining whether or not a call can be made and the function of displaying the number of available channels in the present embodiment. The main control unit 106 includes a wireless unit 107 that performs wireless communication with the wireless base station apparatus 101 through a wireless line, and a telephone unit 108 that performs a telephone call.
In addition to the original call message, a display unit 109 for displaying the number of available channels according to the present embodiment and an operation unit 110 for performing a call operation, a message input operation, and the like are connected.

Next, the operation of the wireless communication system having the above configuration will be described with reference to the flowcharts shown in FIGS. FIG. 2 is a flowchart illustrating the operation of the radio base station apparatus 101. FIG. 3 is a flowchart illustrating the operation of the wireless mobile station device 102.

First, the radio base station apparatus 101 will be described with reference to FIG.
Will be described. Main control unit 1 of wireless base station apparatus 101
03 detects the difference between the total number of communication channels of the radio base station apparatus 101 and the number of communication channels currently used, that is, the number of available communication channels, and outputs the detected information on the number of available communication channels to the radio unit 104. (Step S1). The wireless unit 104 broadcasts the input information on the number of available communication channels into the wireless area through a dedicated wireless channel (step S2).

In transmitting the information on the number of available communication channels, no special radio channel is provided, and the radio base station apparatus 1 in the radio area formed by the radio base station apparatus 101 is not provided.
Broadcast channel (BCCH) or paging channel (PCH) used at the time of paging, which is always transmitted to all of the wireless mobile station devices 102 wirelessly connected to P.01.
For example, the information may be embedded as information on the number of free channels.

Next, referring to FIG.
Will be described. In the wireless mobile station device 102, information on the number of idle communication channels wirelessly transmitted by the wireless base station device 101 is taken into the main control unit 106 via the wireless unit 107 (step S11).

The main control unit 106 determines whether or not there is a free communication channel at the present time of the call based on the free communication channel number information input from the radio unit 107 (step S12). If there is an available communication channel, it is determined that a call can be made at the present time (step S12; Yes), and the operation shifts to a call operation (step S1).
3).

On the other hand, if there is no available communication channel in step S12, it is determined that the call cannot be made at the time of the call (step S12; No), and the process proceeds to step S14. In step S14, it is determined whether or not a predetermined time has elapsed after the user of the wireless mobile station device 102 has performed the call request operation. If it is within the predetermined time (step S14; Yes), the process returns to step S12.
The callability determination is performed again. On the other hand, when a predetermined time has elapsed in step S14 (step S14; No)
Does not perform the calling operation and shifts to the standby state (step S15).

As described above, in response to a call request from the user of the wireless mobile station device 102, a call operation is executed when a necessary communication channel can be secured. In other words, the calling signal is wirelessly transmitted from the radio unit 107 when there is an available communication channel in the radio base station apparatus 101, so that the probability of success at the time of calling is increased, and unnecessary call signals are transmitted. Unnecessary radio wave transmission due to transmission can be eliminated.

Next, the user of the radio mobile station apparatus 102
When calling for the provision of various communication services,
The main control unit 106 determines whether the call can be made as follows,
Perform a calling operation.

That is, the main control unit 106 compares the number of communication channels required for providing various communication services used by the caller with the information on the number of free communication channels input from the radio unit 107. . For example, in the case of “1B = 1 communication channel” in the unrestricted digital communication service, 2 communication channels are required for 2B, and 6 communication channels are required for H0. When the caller requests the H0 service and performs a call operation, the main control unit 106 determines whether or not the call can be made under the condition that the number of available communication channels is equal to or more than six communication channels.

As described above, even in the case of a call using a service that occupies a large number of communication channels, a call message is transmitted from the radio mobile station apparatus 102 when the required number of communication channels has been secured. That is, since the callability is determined in consideration of the service used by the caller, the success probability at the time of calling becomes high even when using a service using multiple communication channels such as high-speed data transfer, Further, unnecessary transmission of an electric wave due to transmission of an unnecessary call message can be eliminated.

The main control unit 1 of the radio mobile station device 102
In step 06, the number of available communication channels received from the radio unit 107 is also displayed on the display of the display unit 109 as character or graphic information.

As a result, the user of the radio mobile station apparatus 102 can make a call after confirming the number of available channels, so that the call operation is not performed in a state where the call probability is low. And the usability can be improved.

[0031]

As described above, according to the present invention,
Since the free communication channel information is added to the wireless channel that the radio base station device is always transmitting, the probability of success when calling the radio mobile station device is high, and the radio base station device performs processing for each call. This has the effect of providing a wireless communication system that does not cause such a problem.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a wireless communication system according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating the operation of the radio base station apparatus according to the present embodiment.

FIG. 3 is a flowchart illustrating the operation of the wireless mobile station device according to the present embodiment.

[Explanation of symbols]

 Reference Signs List 101 wireless base station device 102 wireless mobile station device 103 main control unit 104 wireless unit 105 network interface unit 106 main control unit 107 wireless unit 108 telephone unit 109 display unit 110 operation unit

Claims (3)

[Claims] 1. A wireless communication system comprising: a wireless base station device; and a wireless mobile station device connected to the wireless base station device via a wireless line in a wireless area formed by the wireless base station device. The wireless base station device includes a free communication channel number information transmitting unit that detects the number of free communication channels at any time, and broadcasts the detected free communication channel number information in the wireless area. A radio communication system comprising: a call permission / non-permission determining unit configured to determine whether or not a call can be performed at the present time at which a call has been transmitted based on the received information on the number of available communication channels. 2. The method according to claim 1, wherein said call permission / non-permission determining unit is configured to perform, for a call requesting provision of various communication services used by the caller, a communication required to provide the requested communication service. The wireless communication system according to claim 1, wherein the number of channels is compared with the information on the number of free communication channels wirelessly received to determine whether a call can be made. 3. The information processing apparatus according to claim 1, further comprising: an idle communication channel number information display unit that displays the wirelessly received idle communication channel number information on a display as character or graphic information. Wireless communication system.