JP2001346248A - Wireless terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless terminal that can make communication with a prescribed device connected to a base station through a telephone line network by using information channels through the base station and the telephone line network at a stable communication rate. SOLUTION: When a mobile station discriminates that a connected base station is installed at a place having high communication traffic on the basis of ID information or the like of the base station, the mobile station selects a state of 'with TCH variable function' so as to increase/decrease a communication information channel. On the other hand, when the mobile station discriminates that the connected base station is installed at a place having low communication traffic, the mobile station selects a state of 'without TCH variable function' so as to disable increase/decrease of the communication information channel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base station and a predetermined device connected by a telephone network, and a plurality of information channels via the base station and the telephone network using a plurality of information channels. More particularly, the present invention relates to a method for controlling the above-mentioned wireless terminal device when an information channel is added.

[0002]

2. Description of the Related Art PHS (Personal Handyp)
In conventional data communication using a phone system (second-generation cordless telephone system), data communication is performed by connecting a data terminal to a wireless terminal device.

Further, in order to improve the speed of data communication,
A communication method using two information channels is a standard (RC
RSTD-28), and the information transfer rate is 64 kb / s including the control data part.

Next, a conventional example in which a mobile station communicates with a partner terminal adapter via a base station will be described.

FIG. 8 is a diagram showing a control sequence in a conventional example in which a mobile station communicates with a partner terminal adapter via a base station.

[0006] When the mobile station enters a calling operation for performing 64 kb / s data communication, first, a link channel establishment request (301) is transmitted to the base station. The base station receiving the message transmits a link channel assignment (302) to the mobile station. Thereby, the first information channel (T
CH) is allocated. In addition, the mobile station needs to assign a second TCH to the base station,
A CH addition request (305) is transmitted to the base station.

[0007] When an empty TCH exists in the base station, the base station transmits a TCH additional assignment message to the mobile station, whereby the second TCH is allocated to the mobile station. It becomes possible to start 64 kb / s communication.

[0008] In addition, each of the base station and the mobile station sets the presence or absence of an additional function of the TCH. Only when both the base station and the mobile station are in the state of “TCH variable function = present”, communication is performed. Can be added to the TCH.

[0009]

However, in the above-mentioned conventional example, when the mobile station is in a state where "TCH variable function = no function",
In performing 64 kb / s data communication using two TCHs, if the base station to which the mobile station is connected is installed in a location where communication traffic frequency is high, other mobile stations accessing the base station will be Since there are many, the mobile station has two TCs
It becomes difficult to maintain H, and there is a possibility that communication will be disconnected.

[0010] According to the present invention, a base station and a predetermined device are connected by a telephone network, and a plurality of information channels are used between the base device and the predetermined device via the base station and the telephone network. It is an object of the present invention to provide a wireless terminal device capable of performing communication at a stable communication speed.

[0011]

SUMMARY OF THE INVENTION The present invention provides a base station ID.
If it is determined based on the information and the like that the connected base station is a base station installed in a place where communication traffic is high, the mobile station switches to a state of “TCH variable function = present”, and Allows you to increase or decrease channels. Therefore, a plurality of TCHs receiving the TCH reduction request from the base station
A mobile station communicating on the CH releases one TCH, so that more mobile stations can connect to the base station.

On the other hand, when it is determined that the connected base station is a base station installed in a place where communication traffic is low, the mobile station switches to the state of “TCH variable function = none” and sets the communication information channel. Cannot be increased or decreased.
Therefore, communication at a stable communication speed is enabled.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a radio communication system 10 including a mobile station 101 according to an embodiment of the present invention.
FIG.

In a radio communication system 100, a mobile station 101 as a radio terminal device and a data terminal 103 are connected via a connection cable 102, and the mobile station 101 makes a radio connection with a base station 104 to connect to a public network 106. The mobile station 101 communicates with the partner terminal adapter 108 through the connected telephone lines 105 and 107.

FIG. 2 is a block diagram showing the mobile station 101 according to the above embodiment.

As shown in FIG. 2, the mobile station 101 receives, for example, from a data terminal 103 via an antenna 203,
When transmitting predetermined data, first, in order to establish a communication path with the base station 104, the mobile station-side radio transmitting / receiving section 204
Performs a sequence process according to an instruction from the mobile station control unit 201. Once the communication path has been established, the data terminal 103
Transmits the transmission data to the terminal interface processing unit 206 using the connection cable 102, and sends the data to the PIAFS processing unit 20.
5 performs PIAFS framing. The framed data is sent to the mobile station side memory 202, and waits for transmission from the mobile station side wireless transmission / reception unit 204. Then, data is transmitted using the antenna 203 according to an instruction of the mobile station control unit 201.

Next, the operation of the above embodiment will be described.

As an embodiment, based on the ID of the base station 104 to which the mobile station 101 is connected (hereinafter referred to as “CS-ID”), the base station 104 is installed in a place where communication traffic is high or low. This is a process for judging whether or not.

FIGS. 3 and 4 are flowcharts showing the operation of the above embodiment.

When the mobile station 101 shifts to standby, it must be connected to a predetermined CS (base station). Therefore, a CS search (base station search) (401) is performed.
Synchronize with the base station with the best reception sensitivity and base station ID
The CS-ID, which is a number, is stored in the memory 202 on the mobile station 101 side.
(402).

Here, the mobile station 101 compares the CS-ID stored in the memory with a previously registered “communication traffic CS-ID table” (FIG. 7) (40).
3) If the connected base station 104 matches the “ID of the base station installed in a place where communication traffic is high” (803) (404), the state is set to “TCH variable function = present” ( 407).

When the ID matches (405) the “ID of the base station installed in a place with low communication traffic” (405),
The state of “TCH variable function = none” is set (406).
If no matching CS-ID is found in the “communication traffic CS-ID table” (FIG. 7), the “TCH variable function” is not reset.

That is, the above operation realizes a determination means for determining whether the connection destination base station is installed in a place where communication traffic is high or where it is installed in place where communication traffic is low. .

The operation of the mobile station 101 user causes 64
When a call for kb / s data communication is activated, the mobile station 10
1 transmits a link channel establishment request (301) to the base station 10
Send to 4. Upon receiving the message, the base station 104
A link channel assignment (302) is transmitted to the mobile station 101. This assigns a first information channel (TCH).

Further, to perform 64 kb / s data communication, the mobile station 101 requests the second TCH from the base station 104 by transmitting a TCH addition request (305) to the base station 104.

Here, if an empty TCH exists in the base station 104, the base station 104 transmits a TCH additional assignment message (306) to the mobile station 101, whereby the mobile station 101 is allocated the second TCH. Two TCs
H makes it possible to start 64 kb / s data communication.

When the mobile station 101 receives a wireless channel disconnection request (501, 601 and 701) from the base station 104 after the start of 64 kb / s data communication using two TCHs, the "communication traffic CS-ID" The processing according to the comparison result (403) of the “table” is performed.

FIG. 5 is a diagram showing a control sequence in the case of “installation in a place where communication traffic of the base station is high”.

In FIG. 5, a radio channel disconnection request (6
01), for one TCH, a wireless channel disconnection completion (602) is transmitted to the base station 104, one channel is disconnected (506), and communication is performed on the remaining one channel (50).
Continue with 7).

Thereafter, on the side of the base station 104, the idle T
When the CH is secured, the base station 104 transmits a TCH addition request instruction (603) to the mobile station 101. The mobile station 101 that has received this request issues a TCH addition request (30
5) to the base station 104. If the base station 104
By transmitting the H additional allocation message to the mobile station 101, the second TCH is allocated to the mobile station 101,
It becomes possible to start 64 kb / s communication with two TCHs again.

According to the above method, in the case of "installation in a place where the base station communication traffic is high", the increase and decrease of the TCH are repeated to continue the communication.

FIG. 6 is a diagram showing a control sequence in the case of "installation in a place where base station communication traffic is low" in the above embodiment.

In the case of "installation in a place where the base station communication traffic is low", in response to the wireless channel disconnection request (701), the wireless channel disconnection for two TCHs is completed (7).
02) is transmitted to the base station 104, and the current base station 104 is disconnected (503).

Next, 64 kb /
s Search for another base station capable of data communication is started (50
4) The connection is established and communication is resumed (505).

"Communication traffic CS-ID table"
If there is no currently connected base station CS-ID, according to the “TCH variable function” setting state of the mobile station 101,
If the state is “TCH variable function = present”, disconnection processing of one channel is performed. If the state is “TCH variable function = absent”, another base station 104 is searched.

According to the above embodiment, the connected base station 1
If it is determined that the base station 04 is a base station installed in a place where communication traffic is high, even if the mobile station 101 is communicating on a plurality of channels, the mobile station 101 releases one channel to allow other mobile stations to communicate. And if it is determined that the base station is located in a place where the communication traffic is low, another base station is searched, so that communication can be performed at a stable communication speed.

[0037]

According to the present invention, a base station and a predetermined device are connected by a telephone network, and the predetermined device is connected to the predetermined device by using a plurality of information channels via the base station and the telephone network. In the wireless terminal device capable of communicating with the wireless terminal device, there is an effect that communication can be performed at a stable communication speed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a wireless communication system 100 including a mobile station 101 according to one embodiment of the present invention.

FIG. 2 is a block diagram showing a mobile station 101 according to the embodiment.

FIG. 3 is a flowchart showing the operation of the embodiment.

FIG. 4 is a flowchart showing the operation of the embodiment.

[Fig. 5] "Installation in a place where communication traffic of the base station is high"
FIG. 9 is a diagram showing a control sequence in the case of FIG.

FIG. 6 is a diagram illustrating a control sequence in the case of “installation in a place where base station communication traffic is low” in the embodiment.

FIG. 7 shows communication traffic CS-I in the above embodiment.
It is a figure showing a D table.

FIG. 8 is a diagram showing a control sequence in a conventional example in which a mobile station communicates with a partner terminal adapter via a base station.

[Explanation of symbols]

 100: wireless communication system, 101: mobile station as a wireless terminal device, 102: connection cable, 103: data terminal, 104: base station, 105, 107: telephone line, 106: public network, 108: partner terminal adapter.

Claims (3)

[Claims] A wireless communication can be performed with a base station connected to a telephone network, and a plurality of devices connected to the telephone network via the base station. In a wireless terminal device capable of communicating using an information channel, it is determined whether the connection destination base station is installed in a place where communication traffic is high or where the base station is installed in place where communication traffic is low. When performing communication using the plurality of information channels, when the connection destination base station is installed in a place where communication traffic is high, it is possible to increase or decrease the number of information channels used. Means for increasing / decreasing an information channel; information channel for disabling the increase / decrease of the information channel used when the base station of the connection destination is installed in a place where communication traffic is low. Wireless terminal apparatus characterized by having; and Le decrease possible means. 2. The wireless terminal device according to claim 1, further comprising storage means for storing a combination of an ID number of a base station existing in a wireless area of the wireless terminal and a communication traffic frequency. 3. The wireless terminal device according to claim 1, wherein the wireless terminal is a PHS mobile station.