JP2007180878A - Communication terminal device and communication control method thereof - Google Patents

Abstract

A communication terminal device and a communication control method thereof that can immediately end assignment of identification information at the time of regulation.
A signal determination unit 51 determines a signal constructed by a control unit 5, and if the determined signal is other than a connection request signal for the purpose of exchanging user data packets, the transmission unit 1 immediately When transmitted to the base station AN and the signal is a connection request signal for the purpose of exchanging user data packets, the condition determining unit 521 of the transmission restricting unit 52 performs a persistence test. If the result of the test is acceptable, the transmission unit 1 transmits a connection request signal. If the result of the test is unacceptable, the transmission unit 1 performs the persistence test again.
[Selection] Figure 2

Description

  The present invention relates to a communication terminal apparatus that controls access restrictions and a communication control method thereof.

For example, during a disaster or at a specific date such as New Year, communication from a mobile device (such as a portable terminal) to a communication network may be restricted in order to prevent traffic exhaustion. The communication restriction is implemented by the system side of the communication network, that is, for example, an operation center that performs overall control.
At the time of communication restriction, a restriction rate is set by the system side of the communication network, and notification is given to each portable terminal. The restriction rate indicates the rate of restriction on portable terminals in the communication network. Each mobile terminal is assigned one (or a plurality) of 16 access overload classes (ACCOLC), and only some of the 16 classes can be transmitted during regulation. At this time, the system side determines the number that can be transmitted. For example, when 2 out of 16 ACCOLCs can be transmitted, the regulation rate is calculated as (16-2) / 16 and is 87.5%.

  When restrictions are imposed by the system, the mobile terminal performs a persistence test for each transmission request according to the specifications defined in 3GPP2, and the mobile terminal transmits a signal unless it passes this request. I can't. 3GPP2 (3rd Generation Partnership Project 2) is one of the standardization projects for third generation (3G) mobile communication systems, and is an international standard IMT-2000 http://e-words.jp/w/IMT-2000 Among the .html standards, technical specifications for the CDMA2000 system are being standardized.

  By the way, CDMA2000 1X EV-DO (Evolution-Data Optimized / Only) that efficiently supports only high-speed data transmission is known as one of CDMA2000 standards. 1X EV-DO is a CDMA2000-based communication system for transferring only data and performing high-speed data communication.

In EV-DO, a mobile terminal is usually referred to as an access terminal (AT), and a base station that is a terminal device of a communication network that directly communicates with the mobile terminal and a controller thereof are combined with an access network (AN: Access). Network).
When the mobile terminal AT communicates with the communication network by EV-DO, the mobile terminal AT requests the base station AN to assign mobile terminal identification information called UATI (Unicast Access Terminal Identifier).

FIG. 1 shows a sequence up to the completion of connection between the mobile terminal AT and the base station AN.
First, the mobile terminal AT transmits an identification information assignment request signal “UATIRequest” to request the base station AN to assign a UATI.
Upon receipt of “UATIRequest”, the base station AN transmits an acknowledgment “ACAck” for notifying the mobile terminal AT that the base station AN has received “UATIRequest” to the mobile terminal AT.

Next, the base station AN performs UATI assignment to the mobile terminal AT and transmits an identification information assignment signal “UATIAssignment” to the mobile terminal AT.
The mobile terminal AT that has received “UATIAssignment” transmits an identification information acquisition completion signal “UATIComplete” that notifies the base station AN that acquisition of UATI has been completed. The base station AN transmits an acknowledgment “ACAck” for “UATIComplete” to the mobile terminal AT.

Next, the mobile terminal AT transmits a connection request signal “ConnectionRequest” to the base station AN, and the base station AN that has received the connection request signal returns an acknowledgment “ACAck” to the mobile terminal AT. The base station AN assigns a traffic channel to the mobile terminal AT and transmits a traffic channel assignment signal “TrafficChannelAssignment”. Further, the mobile terminal AT that has received “TrafficChannelAssignment” transmits a Pilot + DRC channel “ReverseTrafficChannel”, and when this is captured by the base station AN, the base station AN transmits a traffic channel establishment notification “RTCAck”. Then, the portable terminal AT transmits a traffic channel establishment completion notification “TrafficChannelComplete” to the base station AN.
As described above, the mobile terminal AT establishes communication with the base station AN.

  As described above, the mobile terminal AT establishes communication with the base station AN. However, when restrictions are imposed, communication via the uplink CDMA channel (referred to as an access channel) from the mobile terminal AT to the base station is not performed. All are subject to regulation. Therefore, the signals transmitted by the mobile terminal AT on the access channel before establishing communication are “UATIRequest”, “UATIComplete”, and “ConnectionRequest” three times as described above. In EV-DO, at least three persistence tests must be passed before the mobile terminal AT establishes communication with the base station AN.

  In the persistence test, the test is repeated until it passes, so if the number of persistence tests increases, it takes a lot of time and a load is imposed on the mobile terminal AT.

Originally, the purpose of restricting is to restrict communication for exchanging user data packets and to suppress the establishment of traffic for exchanging user data packets, such as “UATIRequest”, “UATIComplete”, etc. Since transmission of a signal that is not intended for user data packet exchange is not expected to have a significant effect on traffic depletion, the system side is not willing to restrict this transmission.
In order to eliminate such a situation, an object of the present invention is to provide a communication terminal apparatus and a communication control method thereof that can perform restriction control according to the type of signal at the time of restriction.

  A communication terminal device according to a first aspect of the invention includes a receiving means for receiving a signal transmitted from a base station, a transmitting means for transmitting a signal to the base station, and a signal indicating a restriction state transmitted from the base station Is received by the receiving means, and in a communication terminal device comprising transmission restriction means for restricting transmission of signals from the transmitting means to the base station, the type of signal transmitted to the base station is determined. A type of the transmission signal determined by the signal determination unit when the transmission control unit determines that the signal is being controlled according to the restriction state signal received by the reception unit; The transmission restriction is controlled according to the above.

  Preferably, the transmission restricting means includes condition determining means for determining whether or not a predetermined condition is satisfied in the transmission processing of the transmission signal, and the predetermined condition is satisfied by the condition determining means. In the case where it is determined that the transmission signal is permitted to be transmitted by the transmission unit and the transmission signal transmission is not restricted according to the type of the transmission signal determined by the signal determination unit, The transmission of the transmission signal is permitted without performing the determination by the condition determination means.

  Preferably, the transmission restriction unit restricts transmission of the transmission signal when the signal determination unit determines that the signal transmitted from the transmission unit is a signal intended for user data packet exchange. It is characterized by performing.

  A communication control method for a communication terminal apparatus according to a second aspect of the present invention is a communication control method for restricting transmission of a signal to a base station by a transmission unit when a signal indicating a restriction state transmitted from a base station is received by the reception unit. In the communication control method of the terminal device, it is determined when the type of signal transmitted to the base station is determined, and it is determined that communication is restricted according to the restriction state signal received by the receiving means. The transmission restriction of the transmission signal is controlled according to the type of the transmission signal.

  Preferably, when the type of the signal transmitted from the transmission means is a signal intended for exchanging user data packets, transmission of the transmission signal is regulated.

  At the time of regulation, it is possible to provide a communication terminal apparatus that controls regulation according to the type of signal to be transmitted and a communication control method thereof.

Hereinafter, the portable terminal of this embodiment will be described.
FIG. 2 is a block diagram illustrating a configuration of the mobile terminal 100 according to the present embodiment.
As illustrated in FIG. 2, the mobile terminal 100 according to the present embodiment is a communication terminal device that includes a transmission unit 1, a reception unit 2, a display unit 3, an input unit 4, and a control unit 5.

The transmission unit 1 transmits a signal to the base station of the EV-DO communication network.
The receiving unit 2 receives a signal from a base station of the EV-DO communication network. In this embodiment, the reception unit 2 receives a restriction state signal that the base station AN notifies each terminal of the restriction state, and outputs it to the transmission restriction unit 52 described later.
Signals transmitted and received in the transmission unit 1 and the reception unit 2 are user data packet signals and control signals for data communication.

The display unit 3 is an LCD (Liquid Crystal Display) or the like, and displays various information regarding the operation of the mobile terminal 100. For example, a destination notification at the time of outgoing / incoming call, a mail reception notification, a mail content display, and the like.
The input unit 4 is an interface used when the user inputs to the mobile terminal 100, such as buttons for inputting numbers and characters, a cross key, and a determination key.

The control unit 5 controls each component of the mobile terminal 100.
In addition, the control unit 5 constructs a signal to be transmitted to the base station AN according to a user input or the like by the input unit 4.
The control unit 5 of the mobile terminal 100 according to the present embodiment further includes a signal determination unit 51 and a transmission restriction unit 52.

  The signal determination unit 51 determines the type of signal transmitted by the transmission unit 1. That is, referring to a signal constructed by the control unit 5, the signal requests the base station AN to exchange user data packets, that is, to connect for the purpose of a data transmission request or a data reception request (establishment of a traffic channel). It is determined whether or not the connection request signal “Connection Request” is received.

When the receiving unit 2 receives a restriction state signal indicating a restriction state transmitted from the base station, the transmission restriction unit 52 determines a connection request signal “for user data packet exchange” determined by the signal determination unit 51. In the case of “Connection Request”, transmission is restricted.
The transmission restricting unit 52 further includes a condition determining unit 521.
The condition determination unit 521 performs a determination called a persistence test in order to execute transmission restriction for each probe sequence (Probe Sequence; a cycle in which transmission is performed), and whether or not the connection request signal passes the persistence test. Judgment is made.

The persistence test is defined in 3GPP2, and the value p included in the regulation state signal received by the receiving unit 2 is compared with the random value x (0 <x <1) prepared by the condition determining unit 521. Is done by.
When x <p, the test has passed, and the condition determination unit 521 causes the transmission unit 1 to transmit a connection request signal that has passed the test. That is, when the condition determination unit 521 determines that a predetermined condition (test) is satisfied, a connection request signal is transmitted to the base station AN via the transmission unit 1 and a traffic channel is established. Transmission of the transmission signal is permitted.

  If it fails, the condition determination unit 521 performs the persistence test again for the next probe sequence. Therefore, when it fails, the said test is repeatedly implemented until it passes a test. And if a test is passed with the change of the value p by deregulation, a connection request signal will be transmitted to a transmission part. Note that when the task process is terminated by a user's forced termination operation or the like, this process is also terminated.

Next, an operation example of the mobile terminal 100 of the present embodiment will be described.
FIG. 3 is a flowchart illustrating an operation example of the mobile terminal 100 according to the present embodiment.
Step ST1:
The control unit 5 constructs a signal to be transmitted to the base station AN according to a user input or the like by the input unit 4. The signals constructed here include an identification information assignment request signal “UATIRequest” for requesting the base station AN to assign identification information of the mobile terminal 100, and an assignment completion notification signal “UATIComplete” for exchanging user data packets. Connection request signal “ConnectionRequest” or the like.

Step ST2:
The signal determination unit 51 determines the signal constructed by the control unit 5 in step ST1. When the signal determined here is a connection request signal “ConnectionRequest” for exchanging user data packets, the process proceeds to step ST3, and the signal is other than the connection request signal “ConnectionRequest” for exchanging user data packets. In this case, specifically, if the signal constructed in step ST1 is a signaling message (a signal for transmitting a call state or the state of the partner device) transmitted via the traffic channel, the process proceeds to step ST5.
Step ST3:
The transmission restricting unit 52 restricts the signal determined by the signal determining unit 51 in step ST2. That is, the condition determination unit 521 performs a persistence test on the signal determined by the signal determination unit 51 in step ST2. If the test result is acceptable, the process proceeds to step ST4. If the result is unacceptable, step ST3 is repeated.

Step ST4:
The transmission unit 1 transmits a signal to the base station AN.
Step ST5:
The transmission unit 1 transmits a signal to the base station AN.
When the regulation rate is 100%, the regulation is performed by changing the persistence test value p in step ST3. However, when the regulation rate is determined to be 100% based on the received regulation state signal. Alternatively, the communication process may be restricted by terminating the flow process.

  As described above, according to the mobile terminal 100 of the present embodiment, when a signal is transmitted to the base station AN, the signal is a connection request signal “ConnectionRequest” for exchanging user data packets. The signal determining unit 51 determines whether or not it is other than a connection request signal “Connection Request” for exchanging user data packets, so that the transmission restricting unit 52 does not restrict, that is, the persistence test is not performed. If the connection request signal “ConnectionRequest” for exchanging user data packets is sent as is, the transmission restriction unit 52 places a restriction and does not transmit until it passes, so an identification information allocation request is made. Signal “UATIRequest”, etc. There is no restriction when transmitting a signal not intended for the data packet exchange, and it takes a long time for the assignment of identification information to be completed or a heavy load is applied to the mobile terminal 100. It can be avoided.

The present invention is not limited to the embodiment described above.
That is, those skilled in the art may make various modifications, combinations, subcombinations, and alternatives regarding the components of the above-described embodiments within the technical scope of the present invention or an equivalent scope thereof.

  In the present embodiment, the regulation, which is a predetermined condition that allows transmission to pass the persistence test, has been described, but the present invention is not limited to this. The present invention is also applicable to a communication terminal device that is subject to a restriction that enables transmission by satisfying conditions other than the persistence test.

  In this embodiment, the signal determination unit 51 determines whether or not the connection request signal “Connection Request” is intended for exchanging user data packets to be transmitted, and the transmission restriction unit 52 restricts according to the determination result. Although the example which performs this was demonstrated, this invention is not limited to this. That is, any communication terminal device may be used as long as the signal determination unit 51 determines the type of signal to be transmitted, and the transmission restriction unit 52 controls the restriction process according to the determined signal type.

FIG. 1 is a diagram showing a sequence up to the completion of connection between the mobile terminal AT and the base station AN. FIG. 2 is a block diagram illustrating a configuration of the mobile terminal 100 according to the present embodiment. FIG. 3 is a flowchart illustrating an operation example of the mobile terminal 100 according to the present embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Portable terminal, 1 ... Transmission part, 2 ... Reception part, 3 ... Display part, 4 ... Input part, 5 ... Control part, 51 ... Signal determination part, 52 ... Transmission control part, 521 ... Condition determination part

Claims (5)

Receiving means for receiving a signal transmitted from the base station;
Transmitting means for transmitting a signal to the base station;
When the reception means receives a signal indicating a restriction state transmitted from the base station, transmission restriction means for restricting transmission of a signal from the transmission means to the base station;
In a communication terminal device comprising:
Comprising signal determining means for determining the type of signal transmitted to the base station;
When the transmission restricting unit determines that the signal is being regulated according to the restriction state signal received by the receiving unit, the transmission restricting unit is configured according to the type of the transmission signal determined by the signal determining unit. A communication terminal device. The transmission restricting means has condition determining means for determining whether or not a predetermined condition is satisfied in the transmission processing of the transmission signal, and the condition determining means determines that the predetermined condition is satisfied. If the transmission means permits the transmission of the transmission signal and the transmission signal transmission is not restricted according to the type of the transmission signal determined by the signal determination means, the condition determination means The communication terminal apparatus according to claim 1, wherein transmission of the transmission signal is permitted without performing the determination according to claim 1. The transmission restricting means restricts transmission of the transmission signal when the signal determining means determines that the signal transmitted from the transmitting means is a signal intended for user data packet exchange. The communication terminal apparatus according to claim 1 or 2, characterized in that: In a communication control method of a communication terminal device that restricts transmission of a signal to the base station by a transmission unit when receiving a signal indicating a restriction state transmitted from a base station,
Determine the type of signal transmitted to the base station;
When it is determined that communication is being restricted according to the restriction state signal received by the receiving means, transmission restriction of the transmission signal is controlled according to the type of the transmission signal to be determined. A communication control method for a communication terminal device. The communication of the communication terminal device according to claim 4, wherein when the type of the signal transmitted from the transmission means is a signal intended for user data packet exchange, transmission of the transmission signal is regulated. Control method.

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