JPH05344236A - Call charging method for mobile communication system - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to suppress call requests when there is congestion and to promote call requests when there is no congestion. [Structure] The base station 10 includes mobile units 11, 12, 13, 14
The number of call channels is counted based on the number of mobile stations connected via the call channel, and the call charge is set according to this count value. Sent to the mobile device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a call charging method for a mobile communication system, and more particularly, in a code division multiple access (CDMA) mobile communication system, the call charging is set according to the number of call channels. The present invention relates to a call billing method for a mobile communication system suitable for use.

[0002]

2. Description of the Related Art In recent years, demand has rapidly increased for mobile communication systems such as public car phones and mobile phones due to their convenience. In such a system, if an analog mobile communication system is adopted, it is not possible to secure a large amount of line capacity, so it has been proposed to adopt a digital mobile communication system. Further, development is being carried out by a CDMA mobile communication system which is characterized by being more confidential and confidential than a narrow band digital mobile communication system.

The CDMA system, as shown in FIG.
The narrowband information data 1 is spread by the special spreading code 2 into the wideband signal 3 and transmitted, and the receiving side multiplies the spreading code 2 multiplied by the transmitting side and the synchronized code (this is called despreading). By this, the original information data 1
It is one of the methods to take out. According to this communication method,
In some cases, the speech channels are distinguished by the pattern or phase of the spreading code 2, and therefore signals overlap in the same frequency band. Even when several channels overlap, the spreading code 2 used in the transmitting section is multiplied on the receiving side, so that the signals 4 of the other channels are spread more and fall to a negligible level.

[0004]

However, the conventional C
The DMA type communication system has the following problems.

In the CDMA system, speech channels are distinguished by the pattern or phase of the spreading code 2, and signals of a plurality of channels may overlap in the same frequency band. In such a case, other channels become noise as they are spread in the wide band due to despreading on the receiving side, so increasing the number of other channels is equivalent to increasing noise. That is, the signal-to-noise ratio when the communication line is congested is worse than when it is not congested. Therefore, when exchanging information between the base station and the group of mobile devices, if a certain call channel is sequentially assigned to this mobile station in response to a call request from the mobile station, it may increase the number of call channels. The signal-to-noise ratio is correspondingly worse.

The present invention solves the above-mentioned conventional problems and provides a call charging method for a mobile communication system capable of suppressing a call request during congestion and promoting a call request during non-congestion.

[0007]

To achieve the above object, according to the present invention, a base station responds to a call request from a mobile station when exchanging information between the base station and a group of mobile units. Then, the designated call channel is assigned to this mobile station, the number of call channels is counted, the call charge is set according to this count value, and the information related to the set call charge is transmitted to the mobile device that issued the call request. The mobile phone communication method is adopted.

[0008]

According to the present invention, by adopting the above configuration, the call charge is set according to the increase in the number of call channels. Therefore, the call charge is high when the traffic is crowded and the call charge is low when the traffic is not crowded. Since information regarding call billing is transmitted to the mobile station that has made a call request, it is possible to suppress the call request during congestion and promote the call request during non-congestion.
This can suppress an increase in the number of communication channels and increase the signal-to-noise ratio of the communication line.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the base station 10 and a plurality of mobile units 11, 12, 13, 14 are configured to be connected via a telephone line. When a call request is issued from any of the mobile stations, the base station 10 responds to the call request by assigning a specified call channel to the mobile station and counting the number of call channels.
For example, when the base station 10 is in a call with these mobile stations in response to a call request from the mobile stations 11, 12, and 13, the number of call channels is counted as 3. Then, the call charge is set according to the count value, and the information about the set call charge is transmitted to the mobile device that newly generated the call request. When setting the call charge according to the number of the call channels, the base station 10 divides the limit call channel number in which the call is impossible due to the influence of other channels into a plurality of stages, and charges each stage. Determine the value. Then, when a call request is made from the mobile device 14, the base station 10 transmits to the mobile device 14 information regarding a billing value converted from the congestion degree of the current call channel, as a mobile device having a new call request. The mobile device 14, which has received the information on the call charge, transmits the charge value to the user as visual / audible information. Then, the user determines from the charge value whether or not to continue the call request, and transmits the result to the base station 10 via the mobile device 14. Since this charge value increases as the number of call channels increases, it is possible to prevent the user from continuing a call request during congestion.

[0011]

As is apparent from the above-described embodiments, according to the present invention, the call billing value is set according to the number of call channels. Therefore, the call request is suppressed when the traffic is congested and the call request is sent when the traffic is not congested. It can be promoted, and the signal-to-noise ratio of the communication line during congestion can be adjusted even closer to the signal-to-noise ratio of the communication line during non-congestion.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a mobile communication system to which the present invention is applied.

FIG. 2 is a spectrum diagram for explaining a CDMA communication method.

[Explanation of symbols]

 10 base station 11, 12, 13, 14 mobile unit

Claims (1)

[Claims] 1. When exchanging information between a base station and a group of mobile devices, the base station responds to a call request from the mobile station, assigns a specified call channel to the mobile station, and A call billing method for a mobile communication system, which counts the number, sets a call billing according to the counted value, and transmits information about the set call billing to a mobile device that has made a call request.