JPH104585A - Phs terminal with control signal automatic re-transmission function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a PHS terminal with a control signal automatic re-transmission function whose operability is improved by discriminating a cause to a failure in the case of the failure in link setup for a radio block with a radio base station and trying re-dialing automatically for a plurality of number of times with one operation of the user. SOLUTION: When the user uses an operation key section 11 to make dialing, a signal transmission reception section 12 sends a link channel setup request signal to a radio base station 2 via an antenna 10 and when the radio base station 2 sends a link channel assignment reject signal with respect to the setup request signal, a reason discrimination section 13 receives the signal and discriminates whether or not the state of re-dial is in existence based on the reject reason, and the discrimination result is displayed on a result display section 16. When the discrimination result indicates a redial enable state and the user makes an automatic redial operation, a timer 14 is started and when the time of the timer expires, the signal transmission reception section 12 sends again a link channel setup request signal. When a link channel assignment reject signal is received from the radio base station 2 with respect to the link setup request from the PHS terminal 1, the procedure after redialing is repeated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PHS (Personal Handy Phone System) with a control signal automatic retransmission function.
More particularly, the present invention relates to a PHS terminal with a control signal automatic retransmission function for automatically re-calling when a link establishment in a wireless section with a wireless base station fails.

[0002]

2. Description of the Related Art As one example of a conventional technique of this kind, there is a "control signal transmission method" described in Japanese Patent Application Laid-Open No. 4-373331.

In this prior art, a mobile terminal repeatedly transmits a link channel establishment request signal transmitted at the beginning of a calling procedure a plurality of times at random intervals different from each other.

[0006] By transmitting the link channel establishment request signal, for example, three times, failure of link establishment in a wireless section is less likely to occur.

[0005]

However, according to the conventional control signal transmission method, when the link establishment in the wireless section fails, only the alarm of the call failure is displayed to the user, and the call is automatically re-issued. Since it does not have the function, the user has to perform the call operation again,
There was a problem that operability was poor.

In addition, since an alarm is displayed without determining the cause of the link establishment failure, there is a problem that the call is made as a single call failure regardless of the cause of the link establishment failure.

[0007] An object of the present invention is to determine the cause of a failure in establishing a link in a wireless section with a wireless base station and automatically retry the call a plurality of times by a single operation of the user. Another object of the present invention is to provide a PHS terminal with a control signal automatic retransmission function with improved operability.

[0008]

According to the present invention, a PHS terminal that communicates with a radio base station through a radio section transmits a link channel assignment rejection signal from the radio base station when a link is established in the radio section. A PHS terminal with a control signal automatic retransmission function, characterized by comprising a control signal automatic retransmission means for automatically retransmitting a link channel establishment request signal when received, is obtained.

The PHS terminal with a control signal automatic retransmission function is characterized in that the control signal automatic retransmission means repeats the recalling operation by a user's operation when a call is unsuccessful despite the possibility of recalling. can get.

[0010] Further, the PHS terminal transmits from the signal transmission / reception unit by operating the operation key unit operated by a user, a signal transmission / reception unit for transmitting / receiving radio waves to / from the radio base station, and the operation key unit. A reason determining unit for determining whether a link channel establishment can be re-requested when a response from the radio base station to the link channel establishment request signal is a link channel rejection, and a timer for setting an interval for repeating recalling A PHS terminal with a control signal automatic retransmission function, characterized in that when the timer times out, the signal transmission / reception section retransmits the link channel establishment request signal.

The PHS terminal includes a recalling number control unit for counting up the number of recalls each time the timer times out, and a result display unit for displaying the number of recalls output from the recalling number control unit. A PHS terminal with a control signal automatic retransmission function, wherein the signal transmitting / receiving unit repeats the re-calling until the number of re-calls reaches a specified number set by the user.

The operation key section includes a call operation key, an automatic recall key, and a recall interrupt key. The operation key portion is operated when the recall interrupt key is operated while the recall operation is repeatedly performed. As a result, a PHS terminal with a control signal automatic retransmission function characterized in that the automatic recall is interrupted is obtained.

[0013]

Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a PHS terminal showing one embodiment of the present invention.

Referring to FIG. 1, the embodiment comprises a PHS terminal 1 and a radio base station 2, and the PHS terminal 1
An antenna 10, an operation key unit 11 operated by a user,
A signal transmission / reception unit 12 for transmitting / receiving radio waves to / from the radio base station 2 through the antenna 10 and a response from the radio base station to a link channel establishment request signal transmitted from the signal transmission / reception unit 12 by operating the operation key unit 11 are, for example, Reason determining unit 13 for determining whether link establishment can be re-requested when link channel allocation is rejected due to B-channel busy, etc., timer 14 for setting the interval for repeating re-calling, A number-of-recalls control unit 15 for counting up the number of calls;
And a result display unit 16 for displaying the number of recalls from the user.

Next, the operation of the embodiment of the present invention will be described with reference to FIGS.

FIG. 2 is a sequence chart showing the sequence of the automatic repeat call in FIG. 1, FIG. 3 is a flowchart showing the operation procedure of the automatic repeat call in FIG. 1, and FIG. 4 is a sequence showing the sequence of repeating the automatic repeat call in FIG. FIG. 5 is a flowchart showing the operation procedure of the automatic repeat call repetition in FIG. 1, and FIG. 6 is a sequence chart showing the sequence of the automatic repeat call interruption in FIG.

First, the operation of the automatic repeat call in this embodiment will be described with reference to FIG. 1, FIG. 2 and FIG.

The user sets the timing for making a recall in the timer 14 in advance. In this state, when the user performs a calling operation using the operation key unit 11 (step S3).
1), the signal transmitting / receiving unit 12 transmits a link channel establishment request signal to the wireless base station 2 through the antenna 10 (S3).
2).

In response to the link establishment request, the radio base station 2
Has transmitted the link channel assignment rejection signal, the reason determination unit 13 receives the link channel assignment rejection signal via the antenna 10 and the signal transmission / reception unit 12 (S33).
Based on the rejection reason, it is determined whether or not it is possible to make a call again (Y in S34), and the result of the determination is displayed on the result display unit 16.

When the user looks at this display and performs an automatic recall operation using the operation key unit 11 when the result of the determination is that recall is possible (Y in S34) (S35), the timer 14 is started to start timing. (S36).

When the timer 14 times out (Y in S37), the signal transmitting / receiving unit 12 retransmits the link channel establishment request signal (S38).

When a link channel assignment signal is received from the radio base station 2 in response to the link establishment request from the PHS terminal 1 (Y in S39), the link channel establishment is successful, and the calling procedure proceeds.

When a link channel rejection signal is received from the radio base station 2 in response to the link establishment request from the PHS terminal 1 (N in S39), the procedure returns to S35 and the procedure up to S38 is repeated.

No in S34, that is, the reason judging unit 1
When it is determined that the automatic recalling is impossible, the link channel establishment fails.

Next, the operation of the automatic repeat call repetition in this embodiment will be described with reference to FIGS.

The user sets the timing for making a recall in the timer 14 in advance. In this state, when the user performs a calling operation using the operation key unit 11 (step S5).
1), the signal transmitting / receiving unit 12 transmits a link channel establishment request signal to the wireless base station 2 through the antenna 10 (S5).
2).

In response to this link establishment request, the radio base station 2
Has transmitted the link channel assignment rejection signal, the reason determination unit 13 receives the link channel assignment rejection signal via the antenna 10 and the signal transmission / reception unit 12 (S53).
Based on the rejection reason, it is determined whether or not it is possible to make a call again (Y in S54), and the result of the determination is displayed on the result display unit 16.

When the user looks at this display and performs an automatic recall operation with the operation key unit 11 when the result of the determination is that recall is possible (Y in S54) (S55), the timer 14 is started to start the timing. (S56).

The procedure from S51 to S56 is the same as the procedure from S31 to S36 described above.

When the timer 14 times out (Y in S57), the recalling number control unit 15 counts up once and the signal transmitting / receiving unit 12 retransmits the link channel establishment request signal (S58). When a link channel allocation rejection signal is received from the radio base station 2 in response to the second link establishment request (recall), the PHS terminal 1 restarts the timer 14 and the recall number controller 15 Is counted up (S5
10).

When the repetition of the re-calling and the reception of the link channel assignment rejection signal from the radio base station 2 does not reach the specified number of times n (N in S511), the flow returns to S56 and returns to S56.
The procedure up to 510 is repeated.

When the number of repetitions has reached n (S5
11) Y) The number of recalls is cleared (S)
At the same time as 512), the recall number control unit 15 displays on the result display unit 16 whether or not to continue automatic recall.

If the user looks at this display and performs an automatic recall operation, the automatic recall is continued each time. Therefore, if the automatic re-call operation is performed m times, m × n re-calls are repeated.

As described above, in the present embodiment, the automatic recall is confirmed by the key operation of the user every n times, so that the recall is not continued indefinitely. That is, after performing the nth recall, the PHS terminal 1 has a function of waiting for a key operation instruction from the user.

In S54, N, that is, the reason judging unit 13
Determines that automatic recall is not possible, the link channel establishment fails, as in S34.

Next, referring to FIGS. 1 and 6, a description will be given of the operation of the automatic repeat call interruption in this embodiment.

When the user of the PHS terminal 1 performs a call operation and performs an automatic re-call operation when the first link channel assignment rejection signal is received from the radio base station 2, the timer 1
A re-call is made when the timeout of 4, and in some cases, the re-call is repeated until the connection is successful. However, if the user performs an operation of interrupting the automatic recall by using the operation key unit 11 while the recall operation is repeatedly performed,
At that point, the automatic recall is interrupted.

[0039]

As described above, the present invention relates to a PHS terminal which communicates with a radio base station through a radio section when a link channel assignment rejection signal is received from the radio base station when a link is established in the radio section. Control signal automatic retransmission means for automatically retransmitting a link channel establishment request signal, and when a call is failed even though recalling is possible, the control signal automatic retransmission means can be operated by a user. The PHS terminal further includes, as an embodiment thereof, an operation key unit operated by a user, a signal transmission / reception unit for transmitting / receiving a radio wave to / from a wireless base station, and an operation of the operation key unit. When the response from the radio base station to the link channel establishment request signal transmitted from the signal A reason determining unit for determining whether or not channel establishment can be re-requested, and a timer for setting an interval for repeating re-calling, and when the timer times out, by re-transmitting a link channel establishment request signal from the signal transmitting / receiving unit, When the establishment of the link channel in the wireless section with the wireless base station fails once, the retry is automatically retried a plurality of times, so that the user does not need to call again and again.

The PHS terminal includes a recall number control unit for counting up the number of recalls each time the timer times out, and a result display unit for displaying the number of recalls output from the recall number control unit. The signal transmitting / receiving unit repeats re-calling until the number of re-calls reaches a specified number set by the user, and the operation key unit includes a call operation key, an automatic re-call key, and a re-call interrupt key. The automatic recall is interrupted when the recall interrupt key is operated while the recall operation is being performed repeatedly. Since the call can be interrupted, there is an effect that a situation in which the re-call is continued indefinitely does not occur.

[Brief description of the drawings]

FIG. 1 is a block diagram of a PHS terminal showing one embodiment of the present invention.

FIG. 2 is a sequence chart showing a sequence of an automatic repeat call in FIG. 1;

FIG. 3 is a flowchart showing an operation procedure of an automatic repeat call in FIG. 1;

FIG. 4 is a sequence chart showing a sequence of automatic repeat call repetition in FIG. 1;

FIG. 5 is a flowchart showing an operation procedure of automatic repeat call repetition in FIG. 1;

FIG. 6 is a sequence chart showing a sequence of automatic recall interruption in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 PHS terminal 2 Radio base station 10 Antenna 11 Operation key part 12 Signal transmission / reception part 13 Reason judgment part 14 Timer 15 Recall number control part 16 Result display part

Claims (5)

[Claims] 1. A PHS terminal that communicates with a wireless base station through a wireless section and transmits a link channel establishment request signal when receiving a link channel assignment rejection signal from the wireless base station at the time of establishing a link in the wireless section. A PHS terminal with a control signal automatic retransmission function, comprising a control signal automatic retransmission means for automatically retransmitting. 2. The control signal automatic retransmission according to claim 1, wherein the control signal automatic retransmission means repeats the recall by an operation of the user when the outgoing call fails even though the recall is possible. PHS terminal with function. 3. The PHS terminal transmits from the operation key unit operated by a user, a signal transmission and reception unit for transmitting and receiving radio waves to and from the radio base station, and the signal transmission and reception unit by operating the operation key unit. A reason determining unit for determining whether a link channel establishment can be re-requested when a response from the radio base station to the link channel establishment request signal is a link channel rejection, and a timer for setting an interval for repeating recalling 2. The PHS terminal with a control signal automatic retransmission function according to claim 1, further comprising: retransmitting the link channel establishment request signal from the signal transmission / reception unit when the timer times out. 4. The PHS terminal includes: a recall count controller for counting up the number of recalls each time the timer times out; and a result display for displaying the number of recalls output from the recall count controller. 4. The PHS terminal with a control signal automatic retransmission function according to claim 3, wherein the signal transmission / reception unit repeats the re-calling until the number of re-calls reaches a specified number set by the user. 5. The operation key unit includes a call operation key, an automatic recall key, and a recall interrupt key, and a point in time when the recall interrupt key is operated during repetition of the recall operation. 4. The PHS terminal with a control signal automatic retransmission function according to claim 3, wherein the automatic recall is interrupted.