JP2001016643A - Communication device and control method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain radio communication of higher transmission capacity by providing a control means, etc., to make a connection means connect a 2nd communication equipment to the desired number of communication channels according to the discrimination result of a specific discrimination means. SOLUTION: When a certain type of data is transmitted from a data terminal 103 via an antenna 203, a mobile station radio transmitting/receiving part 204 performs sequence processing by an instruction of a mobile station control part 201 to set up a channel to a base station. When the channel is set up, the terminal 103 transmits the sending data to a terminal interface processing part 206 via a connection cable 102 and performs the PIAFS framing of the data at a PIAFS control part 205. The framed data are sent to a memory 202 of a mobile station and wait there for being transmitted from the part 204. Then the data are transmitted via the antenna 203 by an instruction of the part 201.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a communication device capable of performing communication using a plurality of communication channels and a control method therefor.

[0002]

2. Description of the Related Art Data communication using a PHS (Personal Handy phone System) is performed by connecting a data terminal such as a personal computer to a wireless communication device such as a PHS telephone. Some mobile terminals have a built-in PHS communication function to perform data communication.

Accordingly, a large amount of data processed by a personal computer may be wirelessly communicated, and the data transmission speed in a wireless section has been improved.

For this reason, PIAFS (PHS internet access f
A method for transmitting data at 64 Kbps using two information channels capable of transmitting data at 32 Kbps using an orum standard was established by the standard (RCR STD-28).

[0005] This 64 Kbps data transmission requires that two information channels be established between the mobile station and the base station.

In order for the mobile station to perform data communication at 64 Kbps, first, a link channel establishment request is transmitted to the base station. Upon receiving this message, the base station transmits a link channel assignment to the mobile station. This means that the first information channel (TCH) has been allocated. further,
Since the mobile station has the second TCH assigned to the base station,
An H addition request is transmitted to the base station. Here, an empty TCH
If there is a base station, the base station transmits a TCH additional allocation message to the mobile station, the second TCH is allocated to the mobile station, and it is possible to start 64 Kbps communication with two TCHs Become.

[0007] However, if the second TCH is not vacant, the base station transmits a TCH addition reject message to the mobile station. At this time, as the reason display, it is notified that the TCH to be allocated does not exist in the base station.

[0008] The mobile station that has received the TCH addition rejection
Since the TCH could not be established, the area where the information transfer rate is set in the transmission capacity notified by the call setup message is set to "line speed 32Kbps" and the call setup message is sent to the base station. I do. That is, data communication of 32 Kbps is started.

[0009]

However, according to the above-mentioned conventional example, even if it is desired to perform 64 Kbps data communication using two information channels, the base station connected to the first connected base station can be used.
When only one information channel is available, even if two or more information channels are available for other base stations, 32 Kbps is used for one information channel of the first connected base station.
Was communicating.

Therefore, even if the user instructs data communication of 64 Kbps, data communication of 32 Kbps has been performed.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problem by enabling wireless communication with a higher transmission capacity.

In order to achieve the above object, the present invention provides a communication device capable of communicating with another communication device using a plurality of communication channels, wherein the communication device connects a desired number of the plurality of communication channels to the other communication device. Connection means for performing connection processing for determining whether or not a desired number of communication channels have been connected to the first communication device by the connection processing by the connection means; and Accordingly, there is provided a communication device having control means for controlling the connection means to perform connection processing of a desired number of communication channels with a second communication device.

In a communication device capable of communicating by connecting a plurality of communication channels to a radio control device, after connecting a first communication channel to a first radio control device, the second communication channel is connected to the first radio control device. Connection means for performing connection processing for connecting to the first wireless control apparatus, and disconnection means for disconnecting the first communication channel when the second communication channel cannot be connected to the first wireless control apparatus. And a control unit for performing connection processing of the plurality of communication channels with the second wireless control device after the disconnection unit disconnects the first communication channel.

Further, in a control method of a communication device capable of communicating with another communication device using a plurality of communication channels, a connection process for connecting a desired number of a plurality of communication channels with another communication device is provided. A connection step to be performed, a determination step of determining whether or not a desired number of communication channels are connected to the first communication device by the connection processing in the connection step, and a second step in accordance with the determination in the determination step. A control method for a communication device, comprising: a control step of controlling the connection process to connect a communication device and a desired number of a plurality of communication channels in the connection process.

Further, in a control method of a communication device capable of communicating by connecting a plurality of communication channels to a radio control device,
After connecting one communication channel with the first wireless control device,
A connection step of performing a connection process for connecting a second communication channel to the first wireless control device; and, when the second communication channel cannot be connected to the first wireless control device, A disconnection step for disconnecting one communication channel, and a control step of performing a connection process between the second wireless control device and a plurality of communication channels after disconnecting the first communication channel in the disconnection step. And a method for controlling a communication device.

[0016]

(Embodiment 1) In Embodiment 1, the PHS
(Personal Handy phone System) as an example, if two information channels are not available at the base station (CS) called by the mobile station, another base station is searched to use the two information channels. Performs 64Kbps communication using

In this embodiment, the base station is searched each time it is determined that two information channels are not available in the base station.

FIG. 1 shows the configuration of a communication system according to this embodiment. A data terminal (103) such as a personal computer or a portable terminal connected to a mobile station (101) by a connection cable (102) is connected to a base station. (104), and through a telephone line (105, 107) connected to the public network (106),
It can communicate with the partner terminal adapter (108).

FIG. 2 is a configuration diagram of the mobile station (101).

In FIG. 2, reference numeral 201 denotes a mobile station controller which controls the entire mobile station in accordance with a program stored in a mobile station memory 202. Reference numeral 202 denotes a mobile station side memory, which stores a program used for controlling the mobile station control unit 201, and also stores the data terminal 103 and the partner terminal adapter 108
It is also used for temporary storage of data communicated between and. An antenna 203 is used for receiving data transmitted from the base station 104 and transmitting data to the base station 104. Reference numeral 204 denotes a mobile station-side wireless transmission / reception unit which is used for wireless control or the like when wirelessly communicating data. 205 is a PIAFS control unit, which is a PI for performing 32Kbps or 64Kbps wireless communication.
It controls AFS (PHS internet access forum standard) communication. Reference numeral 206 denotes a terminal interface processing unit for performing data communication between the mobile station 101 and the data terminal 103.

According to the above-described units, for example, when transmitting data from a data terminal (103) using an antenna (203), first, a radio transmission / reception on the mobile station side is established in order to establish a communication path with the base station (104). Unit (202) is the mobile station control unit (20
The communication path establishment sequence processing is performed according to the instruction of 1). When a communication path is established, the data terminal (103) sends outgoing data to the terminal interface processing unit (206) using the connection cable (102), and the PIAFS processing unit (205)
Perform IAFS 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 (202). Then, data is transmitted using the antenna (203) according to the instruction of the mobile station control unit (201).

FIG. 3 shows a control flowchart in the mobile station of this embodiment.

FIG. 4 shows a control sequence in the mobile station of this embodiment.

The control of the mobile station described below is performed by the mobile station control unit 201 according to a program stored in the memory 202 of the mobile station.

Hereinafter, this embodiment will be described with reference to FIGS.

When a mobile station enters standby mode, it must synchronize with a certain base station (CS). So CS
A search (S301) is performed to synchronize with the base station having the best reception sensitivity, and the CS-ID, which is the ID number of the base station, is stored in the mobile station memory (202) (S302).

The mobile station user operates the data terminal 103 and
When a control signal for performing 4 kbps data communication is received from the data terminal via the terminal interface processing unit (206), a calling process of 64 Kbps data communication is started (S3).
03).

The mobile station requests a link channel establishment (401)
To the base station. The base station that has received the message transmits a link channel assignment (402) to the mobile station. The first between the mobile station (101) and the base station (104)
Of information channels (TCH) are allocated.

Further, in order to perform 64 Kbps data communication, the mobile station (101) requests the second TCH from the base station by transmitting a TCH addition request (405) to the base station. Where free
If the TCH is present in the base station, the base station transmits a TCH additional assignment message to the mobile station, so that the second TCH is allocated to the mobile station, and it is possible to start 64 Kbps data communication with two TCHs (S305).

If there is no second information channel, the base station transmits a TCH addition rejection message (406) to the mobile station. At this time, as shown in FIG. 5, a notification indicating that the TCH to be allocated does not exist in the base station is given by the reason indication (501).

Upon receiving the TCH addition rejection (406) (S304), the mobile station (101) rejects the assignment of the second information channel and changes the CS-ID of the base station that transmitted the TCH addition rejection (406). The information is stored in the mobile station side memory (202) (S306), and the first information channel disconnection process (S307) is started.

That is, the DISC (407) is transmitted to the base station, and the base station having received the message transmits the UA (408) and the radio channel disconnection (409) to the mobile station (101).
Further, the mobile station (101) transmits a radio channel disconnection completion (410). Thus, the cutting process ends.

When the disconnection processing is completed, the mobile station (101) shifts to another base station (CS) search processing (S308) in order to perform a call processing with another base station (CS).

If a new base station (CS) is not found in the CS search (S308) (S309), the mobile station memory (20
The CS-ID stored in 2) is read (S310), and the read C is read.
A call process of 32 Kbps data communication is performed to the S-ID base station, and 32 Kbps data communication is performed with the partner terminal adapter (S311).

When the presence of a new base station (CS) is found in the CS search (S308) (S309), the mobile station (101) performs a call processing of 64 Kbps data communication to the base station (CS). (S312). That is, a link channel establishment request (41
1), and further transmits a link channel assignment (412) to the base station. When the first information channel (TCH) is allocated between the mobile station (101) and the base station, It sends and receives SABM (413), UA (414), and TCH addition request (415).

The base station that has received the TCH addition request (415)
If the second information channel is free, the base station transmits a TCH additional allocation (416) to the mobile station (101).

When the mobile station (101) receives the additional TCH allocation (416) (S313), it establishes a second information channel,
Communication using two information channels becomes possible, and through transmission and reception of messages such as call setting (417) to response confirmation (431), 64 Kbps data communication with the partner terminal adapter becomes possible (S314).

If the mobile station (101) cannot receive the additional TCH assignment (416) (S313), that is, if it receives another TCH addition rejection message, the mobile station memory (202) prepared in advance. Operate the counter in () (S31)
5) Until counter over is detected (S316), C
Perform S search processing.

When another CS is not found in the CS search (S309) or when the counter is over (S316), the CS-ID stored in the mobile station side memory (202) is read (S310). Then, 32 Kbps data communication is performed with the base station of the read CD-ID. Here, the area in which the information transfer speed is set in the transmission capability notified by the call setting message is “line speed 32 kbps”.

Further, although an example using a counter has been shown as an embodiment, the above may be considered even if a timer is provided.

In the above description, when another base station was not found in S309 or when the count was over in S316, the communication of 32 Kbps was started. However, the communication of 64 Kbps was tried again, and the second communication was attempted. If an information channel cannot be established with the base station, that is, if a TCH addition rejection is received, data communication at 32 Kbps may be performed. This increases the possibility of performing 64 Kbps data communication.

(Second Embodiment) In the second embodiment, a CS table is created by base station (CS) search when a mobile station shifts to a standby state.

Since the configuration of the system and the configuration of the mobile station are the same as those of the first embodiment, detailed description will be omitted.

FIG. 6 shows a control flowchart in the mobile station of this embodiment.

The control of the mobile station described below is performed by the mobile station control unit 201 in accordance with the program stored in the mobile station memory 202 as in the first embodiment.

Hereinafter, this embodiment will be described with reference to FIGS.

When the mobile station (101) enters standby mode, it must synchronize with a certain base station (CS).
Therefore, the base station (CS) is searched (S601), and as shown in FIG. (701), base station C
A CS table including the S-ID (702) and the received electric field value (703) is created (S602), and the CS No. Synchronize with one base station.

The mobile station user operates the data terminal 103 and
When a control signal for performing 4 kbps data communication is received from the data terminal via the terminal interface processing unit (206), a calling process of 64 Kbps data communication is started (S6).
03).

When a call for 64Kbps data communication is activated,
The mobile station (101) transmits a link channel establishment request (401) to the base station. The base station having received the message transmits a link channel assignment (402) to the mobile station (101). This assigns the first information channel (TCH).

Further, in order to perform 64 Kbps data communication, the mobile station (101) requests the second information channel (TCH) from the base station by transmitting a TCH addition request (405) to the base station. Here, when a free information channel (TCH) exists in the base station, the base station transmits a TCH additional assignment message to the mobile station (1
01) to the mobile station to the second information channel (T
CH) and 64Kb on two information channels (TCH)
ps data communication can be started (S604, S60
Five). Here, the second information channel is not available, and the base station sends a TCH addition rejection message (406) to the mobile station (101).
Send to At that time, the reason display (5
01) notifies that the TCH to be allocated does not exist in the base station.

Upon receiving the TCH addition rejection (406) (S604), the mobile station (101) rejects the allocation of the second information channel and changes the CS-ID of the base station that transmitted the TCH addition rejection (406). The information is stored in the mobile station memory (202) (S606), and the first information channel disconnection process (S607) is started.

That is, the DISC (407) is transmitted to the base station, and the base station having received the message transmits the UA (408) and the radio channel disconnection (409) to the mobile station. Send disconnection completion (410).
Thus, the cutting process ends.

When the disconnection processing is completed, the next
Search for the CS No base station.

If there is an unconnected base station (CS) in the CS table (S608), the mobile station (101) stores 64K in the base station (CS).
A call for bps data communication is made (S611). That is, when the link channel establishment request (411) is transmitted to the base station, and the link channel assignment (412) is received and the first information channel is established, the base station and the SABM (413), UA (41)
4) Send and receive the TCH addition request (415).

When the mobile station receives the additional TCH allocation (416) (S612), it can establish a second information channel, and sends and receives messages such as call setup (417) to response confirmation (431). 64Kb with partner terminal adapter
PS data communication becomes possible (S613).

If the mobile station fails to receive the additional TCH assignment (416) (S612), that is, if it receives another TCH addition rejection message, there is an unconnected base station (CS) in the CS table. As long as you reconnect to the unconnected base station (CS)
Perform call processing at 64Kbps.

A base station (CS) not connected to the CS table
If there is no (S608), the CS-ID stored in the mobile station side memory 202 in S606 is read out in S607 (S609), and 32 Kbps data communication is performed using the base station (S610). Here, the area for setting the information transfer rate in the transmission capacity notified by the call setup message is "line speed 32 kbps".
s ".

Also, as an embodiment, an example has been shown in which a call can be made to all CS-IDs in the CS table. You may do it.

In the above description, if there is no unconnected CD-ID base station in the CS table in S608, the call processing is performed again to the base station that has just performed the information channel disconnection processing. If the call processing is performed again with reference to the CS table and the base station of CS No. 1, ie, the base station having the largest received electric field value, more stable communication can be performed. At that time, again try 64Kbps data communication,
If 32 Kbps data communication is performed when two information channels cannot be connected, there is a high possibility that 64 Kbps data communication can be performed.

[0060]

As described above, according to the present invention,
Wireless communication with a higher transmission capacity can be performed.

[Brief description of the drawings]

FIG. 1 is a configuration of a communication system.

FIG. 2 is a configuration diagram of a mobile station.

FIG. 3 is a control flowchart of the mobile station according to the first embodiment.

FIG. 4 is a control sequence of the communication system.

FIG. 5: Contents of TCH addition rejection message

FIG. 6 is a control flowchart of a mobile station according to the second embodiment.

FIG. 7 is a diagram illustrating an example of a base station (CS) table according to the second embodiment.

[Explanation of symbols]

 Reference Signs List 101 mobile station 102 connection cable 103 data terminal 104 base station 105 telephone line 106 public network 107 telephone line 108 partner terminal adapter

Claims (10)

[Claims] 1. A communication device capable of communicating with another communication device using a plurality of communication channels, wherein a connection means for performing a connection process for connecting a desired number of the plurality of communication channels with the other communication device. Determining means for determining whether a desired number of communication channels are connected to the first communication device by the connection processing by the connection means; and, depending on the determination by the determination means, a second communication device, A communication apparatus, comprising: control means for controlling the connection means to perform connection processing of a desired number of communication channels. 2. The communication device according to claim 1, wherein, when there is a communication channel connected to the first communication device, the control unit performs a disconnection process for disconnecting the communication channel connected thereto, and thereafter, the second communication device performs the disconnection process. A communication device for performing connection processing of a communication channel with a communication device. 3. The communication device according to claim 1, wherein the control unit searches for a communication device other than the first communication device in accordance with the determination by the determination unit, and performs the second communication based on the search result. A communication device for performing a connection process with a device. 4. The communication device according to claim 1, wherein the control unit searches for a communicable communication device before performing a connection process of a communication channel with the first communication device, and performs a search based on the search result. A communication device for performing a connection process with the first communication device and the second communication device. 5. The communication device according to claim 1, wherein the control unit uses a communication channel less than the desired number when the second communication device cannot be connected to the desired number of communication channels. A communication device for performing communication. 6. The communication device according to claim 1, wherein the communication device performs wireless communication with the another communication device. 7. The wireless communication according to claim 6, wherein the wireless communication is a PHS (Personal Handy phone System).
A communication device, wherein the communication device is a wireless communication according to claim 1. 8. A communication device capable of communicating by connecting a plurality of communication channels to a wireless control device, wherein after connecting a first communication channel to a first wireless control device, the second communication channel is connected to the first wireless control device. Connecting means for performing connection processing for connecting to the first wireless control apparatus, and disconnecting means for disconnecting the first communication channel when the second communication channel cannot be connected to the first wireless control apparatus. And a control unit configured to perform a connection process between the second wireless control device and a plurality of communication channels after the disconnection unit disconnects the first communication channel. 9. A control method of a communication device capable of communicating with another communication device using a plurality of communication channels, comprising: a connection process for connecting a desired number of communication channels to another communication device. A connection step to be performed, a determination step of determining whether or not a desired number of communication channels have been connected to the first communication device by the connection processing in the connection step, and a second step in accordance with the determination in the determination step. A control method for a communication device, comprising: a control step of controlling a connection process between a communication device and a desired number of a plurality of communication channels in the connection process. 10. A method of controlling a communication device capable of communicating by connecting a plurality of communication channels to a wireless control device, comprising: connecting the first communication channel to the first wireless control device; A connection step of performing a connection process for connecting to the first wireless control device; and disconnecting the first communication channel when the second communication channel cannot be connected to the first wireless control device. And a control step of connecting the second wireless control device and the plurality of communication channels after disconnecting the first communication channel in the disconnecting process. Control method.