JP2008271359A - Phs telephone set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a PHS (personal handyphone service) telephone set capable of easily acquiring information used to decide whether a PHS base station must be additionally provided and the influence occurs between PHS systems. <P>SOLUTION: The PHS telephone set 1 causes a reception level detecting means 11 to detect the signal level of a signal to be received from a base station for each frequency, a reception level comparing means 12 to compare the detected reception level with a threshold, a frequency detecting means 13 to detect the frequency of a reception level not more than the threshold as an idle channel or to judge the frequency of a reception level more than the threshold as a currently used channel, and a screen 4 or a five I/F 5 to output results of the decision. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a telephone set used for a PHS system, and more particularly to a PHS telephone set having a function of measuring a usage state of a signal frequency.

  The PHS system is a wireless communication system in which a required number of base stations (CS: Cell Station) constituting a relatively small wireless communication area are installed, and these base stations are connected by a backbone network, and are accommodated in the wireless communication area. This is a system that allows PHS telephones to communicate with each other and to communicate with each other through an external line by wirelessly communicating with a base station.

  Such a PHS system is widely used as a wireless communication system for offices, and by installing a base station at a required place in the office, it is possible to communicate with an extension or an outside line by a PHS telephone carried by the user. It has become.

Regarding the PHS system, in order to prevent the voice communication from being impossible because all three communication channels owned by the base station are occupied by data communication, the usage status of the communication channel of the base station is managed in the exchange (PBX). An invention for restricting communication connection has been proposed (see Patent Document 1).
JP-A-11-32376

  For example, when introducing a PHS system at a business office, if it is possible to check in advance the situation such as how much space is available in the surrounding area, it can be used as a material for determining problems after the system is installed. be able to. Similarly, even after introducing the PHS system in the office, if you can check the status of how much of the surrounding base stations are used for communication and how much of the frequency is used, you can increase the number of base stations. It can be used as a material for judging the necessity and the like.

Conventionally, a PHS telephone has a function of detecting identification information (CS-ID) of a connected base station (CS-ID), received electric field strength, and a used frequency, but the channel use of the unconnected base station is used. It does not have a function of detecting the surrounding environment such as the situation and the surrounding frequency availability.
In addition, when using a PHS-related field measuring device, it is possible to detect how many base stations are installed by monitoring the identification information of the base stations installed in the vicinity. It is not possible to detect the number of base stations being used or the status of available frequencies.

Here, when a new PHS system for a business office is newly provided in a place where the PHS system for a business office is located, it is necessary to determine what kind of influence there is between these systems.
In addition, it is necessary to determine whether or not an existing base station PHS system needs to be expanded.

  However, in the past, there was no means for easily determining the usage status of the frequency including the surrounding communication environment or the usage status of the base station, and it was not easy to conduct a preliminary survey.

The present invention has been made in view of the above-described conventional circumstances, and an object thereof is to provide a PHS telephone that can easily obtain a material for determining the necessity of adding a PHS base station.
In addition, the present invention has been made in view of the above-described conventional circumstances, and an object thereof is to provide a PHS telephone that can easily obtain a material for determining an influence between PHS systems.

  The PHS telephone according to the present invention determines a function for detecting the level of a signal received from a base station for each frequency, a function for comparing the detected reception level with a threshold value, and a frequency with a reception level equal to or lower than the threshold value as an empty channel Or a function of determining a frequency having a reception level exceeding a threshold as an in-use channel and a function of outputting a determination result.

  According to the PHS telephone according to the present invention, based on the level of a signal received from a base station (that is, a base station in a communication area in which the PHS telephone is located, or another base station in the vicinity that has received the signal) Therefore, it is possible to easily obtain a material for determining what kind of influence occurs between PHS systems and whether it is necessary to add a base station.

The present invention will be specifically described based on examples.
FIG. 1 shows the main functional configuration of a PHS telephone according to an embodiment of the present invention, and FIG. 2 shows the main functional configuration of its control unit.
The PHS telephone 1 includes a transmitter 2 that receives voice input, a receiver 3 that outputs voice, an LCD screen 4 that displays and outputs image information, an external interface (I / F) 5 for connecting to an external device, and a transmitter 6. And a PHS radio 8 having a receiving unit 7, a control unit 9 for executing various functional processes, and an internal memory 10 serving as a data storage area.

As shown in FIG. 2, the control unit 9 detects the reception level of the radio wave received by the reception unit 7 for each frequency, and compares the detected reception level for each frequency with a preset threshold value. Reception level comparison means 12 and frequency determination means 13 for making a determination based on the comparison result for each frequency and storing the result in the internal memory 10 are provided.
Further, as shown in FIG. 2, the control unit 9 determines the use status of the searched base station by searching for the base station (CS) in the vicinity of the PHS telephone 1, and determines the use status of the searched base station. 10 is used.

  In the present embodiment, each of the functional means 11 to 15 of the control unit 9 is configured by the computer hardware provided in the PHS telephone 1 executing the control program according to the present invention. Each may be configured by a hardware module.

Next, with reference to FIG. 3, the process of confirming the surrounding frequency status by the PHS telephone set 1 having the above configuration will be described.
First, the reception level detection means 11 sets one of a plurality of frequencies preset for measurement in the PHS telephone 1 (step S1), and detects the reception level for the frequency (step S2). .

  Then, the reception level comparison means 12 compares a preset threshold value (26 dBμV in this example) with the detected reception level (step S3), and based on the comparison result, the frequency determination means 13 When the reception level is less than or equal to the threshold, the frequency is recorded as “free” in the internal memory 10 (step S4), and when the reception level exceeds the threshold, the frequency is recorded as “in use” in the internal memory 10. (Step S5).

Then, the reception level detection means 11 determines whether or not the above processing has been performed for all the frequencies (step S6). If not, the measurement frequency is updated (step S7), and the above processing step S2 is performed. Repeat ~ 7.
Then, the information recorded in the internal memory 10 is transferred from the external I / F 5 to a personal computer or the like as shown in FIG. 4, for example, based on a user instruction from the operation button of the PHS telephone 1, for display output. (Step S8) or displayed on the LCD screen 4 (Step S9).

That is, the radio waves received by the PHS telephone 1 from the surrounding base stations (the base station that accommodates the PHS telephone 1 in the communication area and further the base station that forms the communication area adjacent to the communication area) by the above processing. Based on the above, the frequency usage situation around the PHS telephone 1 is recorded in the internal memory 10 for each frequency, and this is displayed and output.
In this example, both “in use” and “vacant” are determined and displayed for each frequency, but in the present invention, only one of them may be displayed.

Next, with reference to FIG. 5, processing for confirming the usage status of surrounding base stations by the PHS telephone 1 having the above configuration will be described.
First, the CS search unit 14 searches for neighboring CSs by receiving the identification information (CS-ID) transmitted from the base station (CS) (step S11), and receives the CS of each received base station. -ID is recorded in the internal memory 10 (step S12).

  Then, the use determination unit 15 receives broadcast information from the corresponding base station using one of the CS-IDs recorded in the internal memory 10 (steps S13 and S14), and information indicated by the broadcast information Based on the above, the status of whether or not the base station is in use is recorded in the internal memory 10 (steps S15, S16, and S17). That is, when all the three communication channels for which the base station is set by the received broadcast information are in use, the base station indicated by the CS-ID is recorded as “in use” in the internal memory 10 (step S16), when not using all three communication channels for which the base station is set by the received broadcast information, the base station indicated by the CS-ID is recorded in the internal memory 10 as “unused” (S16). Step S17).

Then, the use determination unit 15 determines whether the above processing has been performed for all the CS-IDs recorded in the internal memory 10 (step S13). If not, all the CS-IDs recorded are recorded. The above processing steps S14 to S17 are repeated.
Then, the information recorded in the internal memory 10 is transferred from the external I / F 5 to a personal computer or the like as shown in FIG. 6, for example, on the basis of a user instruction from the operation button of the PHS telephone 1, for display output. (Step S18) or displayed on the LCD screen 4 (Step S19).

That is, the radio waves received by the PHS telephone 1 from the surrounding base stations (the base station that accommodates the PHS telephone 1 in the communication area and further the base station that forms the communication area adjacent to the communication area) by the above processing. The usage status of each base station in the vicinity of the PHS telephone 1 is recorded in the internal memory 10 for each base station, and this is displayed and output.
In this example, both “in use” and “unused” are determined and displayed for each base station. However, in the present invention, only one of them may be displayed.

It is a functional block diagram of the PHS telephone which concerns on one Example of this invention. It is a function block diagram of the PHS telephone control part which concerns on one Example of this invention. It is a figure explaining the confirmation process of the surrounding frequency condition which concerns on one Example of this invention. It is a figure which shows the example of a display of the confirmation result of a surrounding frequency condition. It is a figure explaining the confirmation process of the surrounding base station usage condition which concerns on one Example of this invention. It is a figure which shows the example of a display of the confirmation result of a surrounding base station usage condition.

Explanation of symbols

1: PHS phone, 4: LCD screen,
5: External I / F, 7: Receiver
8: PHS radio, 9: Control unit,
11: reception level detection means, 12: reception level comparison means,
13: Frequency determination means, 14: CS search means,
15: Specification determination means,

Claims (1)

  A function for detecting the level of a signal received from the base station for each frequency, a function for comparing the detected reception level with a threshold, and a frequency with a reception level that determines a frequency with a reception level equal to or lower than the threshold as empty or exceeds the threshold A PHS telephone having a function of determining that the mobile phone is in use and a function of outputting a determination result.

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