JP2867980B2 - Ad hoc communication network system - Google Patents
Ad hoc communication network systemInfo
- Publication number
- JP2867980B2 JP2867980B2 JP8312480A JP31248096A JP2867980B2 JP 2867980 B2 JP2867980 B2 JP 2867980B2 JP 8312480 A JP8312480 A JP 8312480A JP 31248096 A JP31248096 A JP 31248096A JP 2867980 B2 JP2867980 B2 JP 2867980B2
- Authority
- JP
- Japan
- Prior art keywords
- unit
- electric field
- master unit
- data
- field strength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、親機又は子機のい
ずれにもなる複数の無線端末から構成され、特に親機と
なる最適な通信位置の無線端末を選定するアドホック通
信ネットワークシステムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ad-hoc communication network system comprising a plurality of wireless terminals which can serve as both a master unit and a slave unit, and particularly selects a wireless terminal having an optimum communication position as a master unit.
【０００２】[0002]
【従来の技術】従来、この種のアドホック通信ネットワ
ークシステムの代表的な方式としては、次の二つの通信
方式が知られている。すなわち、一つが、一台の無線端
末が親機として動作し、他の複数の無線端末か子機とな
る親機介在通信方式で、他の一つが、データを転送し合
う無線端末間で毎回同期を取り直す端末直接通信方式で
ある。2. Description of the Related Art Conventionally, the following two communication systems are known as typical systems of this type of ad hoc communication network system. That is, one is a base unit intervening communication system in which one wireless terminal operates as a base unit and becomes a plurality of other wireless terminals or slave units, and the other one is between the wireless terminals transferring data each time. This is a terminal direct communication system that resynchronizes.
【０００３】前記の親機介在通信方式では、親機となる
最適な通信位置の無線端末を選定している。すなわち、
親機の通信範囲（サービスエリア）に全子機が含まれる
ように、その位置の無線端末を親機として選択してい
る。このような親機介在通信方式として、例えば、特開
平４ー２７３６３８号公報の「親機最適配置支援機能を
備えた移動無線装置」が知られている。この従来例で
は、親機と各子機との間をテストモードに設定し、この
テストモードで親機と各子機との間の受信電界強度を測
定する。この受信電界強度の測定結果を子機から親機に
送信して使用不可能な子機を判別して、最適な通信位置
の親機を最終的に決定している。[0003] In the above-mentioned master unit intervening communication system, a wireless terminal at an optimum communication position to be a master unit is selected. That is,
The wireless terminal at that position is selected as the parent device so that the communication range (service area) of the parent device includes all the child devices. As such a master unit intervening communication system, for example, a "mobile radio device having a master unit optimal arrangement support function" disclosed in Japanese Patent Laid-Open No. Hei 4-273736 is known. In this conventional example, a test mode is set between the master unit and each slave unit, and the received electric field strength between the master unit and each slave unit is measured in this test mode. The measurement result of the received electric field strength is transmitted from the slave unit to the master unit, and the unusable slave unit is determined, and the master unit at the optimum communication position is finally determined.
【０００４】[0004]
【発明が解決しようとする課題】このように上記従来例
の親機介在通信方式では、受信電界強度の測定結果を子
機から親機に送信して使用不可能な子機を判別している
ため、この処理が複雑化する。したがって、従来例の親
機介在通信方式では、無線端末の台数が増加すると、複
数の子機に対して、最終的に最適なサービスエリアを形
成する通信位置に配置されている無線端末を短時間で親
機として選定できないという欠点がある。As described above, in the above-described conventional base unit communication system, the measurement result of the received electric field strength is transmitted from the slave unit to the master unit to determine the unusable slave unit. This complicates this process. Therefore, in the conventional master unit interposed communication method, when the number of wireless terminals increases, the wireless terminals located at the communication positions that ultimately form the optimum service area for a plurality of slave units are short-lived. However, there is a disadvantage that it cannot be selected as a master unit.
【０００５】本発明は、このような従来の技術における
課題を解決するものであり、複数台の親機で全無線端末
からの受信電界強度データを収集し、無線端末の台数が
増加した際にも、最適な通信位置の無線端末を短時間で
最終的な親機として選定できるアドホック通信ネットワ
ークシステムの提供を目的とする。[0005] The present invention solves such problems in the prior art, and collects received electric field strength data from all wireless terminals by a plurality of master units, and when the number of wireless terminals increases. Another object of the present invention is to provide an ad hoc communication network system in which a wireless terminal at an optimum communication position can be selected as a final master unit in a short time.
【０００６】[0006]
【課題を解決するための手段】上記課題を達成するため
に、請求項１記載の発明は、親機又は子機のいずれにも
なる複数の無線端末を有し、テストモード時に複数の子
機との最適な通信位置の無線端末を親機として選定する
アドホック通信ネットワークシステムであって、少なく
とも２台の無線端末がテストモードにおける仮の親機と
して動作し、かつ、このテストモードでのそれぞれの仮
の親機が他の無線端末へ送信した際の、それぞれの無線
端末での受信電界強度のデータを収集し、この収集結果
に基づいて、複数の無線端末に対する最適な通信位置の
無線端末を、最終的な親機として選定し、かつ、他の複
数の無線端末を子機に設定する構成としてある。According to a first aspect of the present invention, there is provided a wireless communication apparatus having a plurality of wireless terminals which can be either a master unit or a slave unit, and a plurality of slave terminals in a test mode. An ad hoc communication network system for selecting a wireless terminal at an optimal communication position with a master as a master, wherein at least two wireless terminals operate as temporary masters in a test mode, and When the temporary master unit transmits to another wireless terminal, it collects the data of the received electric field strength at each wireless terminal, and based on the collected result, determines the wireless terminal at the optimal communication position for a plurality of wireless terminals. , And a plurality of other wireless terminals are set as slaves.
【０００７】請求項２記載のアドホック通信ネットワー
クシステムは、請求項１記載において、任意の１台の無
線端末をテストモードでの仮の第１の親機に設定し、か
つ、他の残りの全無線端末を子機に設定して、第１の親
機が全子機へ送信し、この送信を受信した際の受信電界
強度データをそれぞれの子機が送信し、このそれぞれの
子機からの受信電界強度データを第１の親機が収集し、
この電界強度が最小値の子機に電界強度データ及び制御
信号を送信して、仮の第２の親機に設定し、さらに、第
２の親機が全子機から電界強度データを収集し、この第
１及び第２の親機で収集した受信電界強度の加算値が最
小の子機に電界強度データ及び制御信号を仮の第２の親
機から送信して、仮の第３の親機に設定し、この手順を
Ｍ回繰り返し、第１〜第Ｍの親機で収集したそれぞれの
受信電界強度データ中のレベルの最小値から順に選び、
この選んだ複数の最小値から、さらに大きいレベルの順
次で選んだ任意の台数の無線端末を、最終的な親機の候
補に選定する構成としてある。According to a second aspect of the present invention, in the ad hoc communication network system according to the first aspect, any one wireless terminal is set as a temporary first master unit in a test mode, and all other remaining wireless terminals are set. The wireless terminal is set as a slave, the first master transmits to all the slaves, and the respective slaves transmit the received electric field strength data at the time of receiving this transmission. The first master unit collects the received electric field strength data,
The electric field intensity data and the control signal are transmitted to the child device having the minimum electric field intensity, and the electric field intensity data and the control signal are set to the temporary second parent device. Further, the second parent device collects the electric field intensity data from all the child devices. The electric field strength data and the control signal are transmitted from the temporary second master unit to the slave unit having the minimum sum of the received electric field strengths collected by the first and second master units, and the temporary third master unit is transmitted. Machine, repeat this procedure M times, and select in order from the minimum value of the level in each received field strength data collected by the first to Mth masters,
From this plurality of selected minimum values, an arbitrary number of wireless terminals sequentially selected at a higher level are selected as final master device candidates.
【０００８】請求項３記載のアドホック通信ネットワー
クシステムは、前記請求項１記載の無線端末として、無
線回線を通じてデータの無線送受信を行う無線送受信手
段と、自己無線端末をテストモードに設定するテストモ
ード設定手段と、自己無線端末を識別するための識別子
を記憶した識別子記憶手段と、親機から送信された識別
子を識別子記憶手段に記憶した識別子と識別し、かつ、
受信電界強度を測定する受信電界強度測定手段と、受信
電界強度測定手段の測定結果を格納する測定結果格納手
段と、テストモード設定手段によって設定されたテスト
モードでの制御を行うとともに、測定結果格納手段に格
納した測定結果に基づいて最終的な親機を選定する処理
を行い、かつ、自己端末が親機又は子機として動作する
ための制御を行う制御手段とを備える構成としてある。According to a third aspect of the present invention, as the wireless terminal according to the first aspect, a wireless transmitting / receiving means for wirelessly transmitting and receiving data through a wireless line, and a test mode setting for setting the own wireless terminal to a test mode. Means, an identifier storage means storing an identifier for identifying the self-wireless terminal, and an identifier transmitted from the master unit as an identifier stored in the identifier storage means, and
Received electric field strength measuring means for measuring the received electric field strength, measurement result storing means for storing the measurement results of the received electric field strength measuring means, control of the test mode set by the test mode setting means, and storage of the measurement result. And a control unit for performing a process of selecting a final master unit based on the measurement result stored in the unit and controlling the own terminal to operate as a master unit or a slave unit.
【０００９】請求項４記載のアドホック通信ネットワー
クシステムは、前記請求項１記載において、親機が子機
から受信電界強度データを収集する送受信時に、データ
を送信し、かつ、子機から返送された受信データの誤り
率を検出し、この検出したデータ誤り率を受信電界強度
に代えて最終的な親機の選定に用いる構成としてある。According to a fourth aspect of the present invention, in the ad hoc communication network system according to the first aspect, when the master unit transmits and receives the received electric field strength data from the slave unit, the master unit transmits the data and returns the data from the slave unit. The error rate of the received data is detected, and the detected data error rate is used instead of the received electric field strength to select the final master unit.
【００１０】請求項５記載のアドホック通信ネットワー
クシステムは、前記請求項３，４記載の測定結果格納手
段として、親機ごとに他の子機との間の受信電界強度レ
ベル又はデータ誤り率を格納するデータベースを用いる
構成としてある。According to a fifth aspect of the present invention, in the ad hoc communication network system, as the measurement result storing means according to the third and fourth aspects, a reception electric field strength level or a data error rate with another slave unit is stored for each master unit. It is configured to use a database to perform.
【００１１】このような構成の本発明のアドホック通信
ネットワークシステムは、複数の子機との最適な通信位
置の無線端末を親機としてテストモードで選定する際
に、最低２台の無線端末がテストモードにおける仮の親
機として動作する。このテストモードでのそれぞれの仮
の親機が他の無線端末へ送信した際の、それぞれの子機
での受信電界強度のデータを収集し、この収集結果に基
づいて、複数の子機に対して、最適なサービスエリアを
形成する通信位置の無線端末を、最終的な親機の候補と
して選定している。この後、他の複数の無線端末が子機
に設定される。したがって、最低２台の仮の親機で受信
電界強度のデータを収集して親機の候補を選定するた
め、無線端末の台数が増加した際にも、最適な通信位置
の無線端末が短時間で最終的な親機の候補として選定さ
れる。[0011] In the ad hoc communication network system of the present invention having such a configuration, when at least two wireless terminals are tested in the test mode when a wireless terminal at an optimum communication position with a plurality of slaves is selected as a master. It operates as a temporary master unit in the mode. In this test mode, the data of the received electric field strength at each slave unit when each temporary master unit transmits to another wireless terminal is collected, and based on the collected result, a plurality of slave units are transmitted. Thus, a wireless terminal at a communication position that forms an optimal service area is selected as a final master unit candidate. Thereafter, the other plurality of wireless terminals are set as slaves. Therefore, since at least two temporary master units collect data of the received electric field strength and select a master unit candidate, even when the number of wireless terminals increases, the wireless terminal at the optimum communication position can be used for a short time. Is selected as the final master unit candidate.
【００１２】[0012]
【発明の実施の形態】次に、本発明のアドホック通信ネ
ットワークシステムの実施の形態を図面を参照して詳細
に説明する。図１は本発明のアドホック通信ネットワー
クシステムの実施形態における全体構成を示すブロック
図である。図１の例は、同一の機能を備えた多数の無線
端末１０１，１０２，１０３，１０４，１０５，１０
６，１０７，１０８，１０９，１１０が展開して配置さ
れている。この例では、最終的な親機の候補に選定され
る無線端末１０４，１０６，１０７が一つのエリア１１
１内に存在している。Next, an embodiment of an ad hoc communication network system according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an overall configuration of an embodiment of an ad hoc communication network system according to the present invention. The example of FIG. 1 shows a number of wireless terminals 101, 102, 103, 104, 105, 10 having the same function.
6, 107, 108, 109 and 110 are deployed and arranged. In this example, the wireless terminals 104, 106, and 107 selected as the final master device candidates are one area 11
Exist within one.
【００１３】図２は、図１に示す無線端末１０１〜１１
０の機能構成を示すブロック図である。図２の無線端末
１０１〜１１０は、親機又は子機として動作し、自己無
線端末を無線通信時に識別するための識別子を記憶した
識別子記憶部２０１と、現在親機になっている無線端末
１０１〜１１０のいずれかを判別するためのデータを記
憶する親機記憶部２０２と、無線回線を通じてデータの
無線送受信を行うための無線送受信部２０３とを有して
いる。さらに、無線送受信用のアンテナ２０４と、親機
との間の受信電界強度を測定するための受信電界強度測
定部２０５と、この受信電界強度測定部２０５の測定結
果を格納する測定結果格納部２０６とが設けられてい
る。FIG. 2 shows the wireless terminals 101 to 11 shown in FIG.
FIG. 2 is a block diagram showing a functional configuration of the first embodiment. Each of the wireless terminals 101 to 110 in FIG. 2 operates as a master unit or a slave unit, and stores an identifier storage unit 201 for identifying an own wireless terminal at the time of wireless communication, and a wireless terminal 101 currently serving as a master unit. 1 to 110, and a wireless transmission / reception unit 203 for wirelessly transmitting / receiving data through a wireless line. Furthermore, a radio transmission / reception antenna 204, a reception electric field strength measurement unit 205 for measuring a reception electric field intensity between the master unit and a measurement result storage unit 206 for storing the measurement result of the reception electric field intensity measurement unit 205 Are provided.
【００１４】また、無線端末１０１〜１１０は、測定結
果格納部２０６に格納した測定結果に基づいて、新たな
親機を選定する処理を行う親機選定部２０７と、自己無
線端末をテストモードに設定するためのテストモード設
定部２０８と、さらに、テストモード設定部２０８によ
って設定されたテストモード時の親機を短時間で選定す
るための制御を行うテストモード制御部２０９とを有し
ている。The radio terminals 101 to 110 set a base unit selection unit 207 for selecting a new base unit based on the measurement result stored in the measurement result storage unit 206, and set the own radio terminal to a test mode. A test mode setting unit 208 for setting, and a test mode control unit 209 for performing control for selecting a parent device in the test mode set by the test mode setting unit 208 in a short time. .
【００１５】また、自己無線端末が親機として動作する
ための制御を行う親機制御部２１０と、自己無線端末が
子機として動作するための制御を行う子機制御部２１１
と有している。なお、テストモードは親機介在通信方式
における最適な通信位置の無線端末を短時間で親機とし
て選定する動作を行うものである。A base unit control unit 210 for controlling the self wireless terminal to operate as a base unit, and a slave unit control unit 211 for controlling the self wireless terminal to operate as a base unit
And have. In the test mode, an operation of selecting a wireless terminal at an optimum communication position in the master unit communication system as a master unit in a short time is performed.
【００１６】図３は無線端末１０１〜１１０の具体的な
構成を示すブロック図である。図３の無線端末１０１〜
１１０は、装置全体を制御するＣＰＵ３０１と、制御用
プログラム及び受信電界強度の測定結果を記憶したデー
タベースを格納するＲＡＭ３０２と、さらに、装置の起
動におけるブートプログラムを格納するＲＯＭ３０３と
を有している。FIG. 3 is a block diagram showing a specific configuration of the wireless terminals 101 to 110. The wireless terminals 101 to 101 in FIG.
Reference numeral 110 denotes a CPU 301 for controlling the entire apparatus, a RAM 302 for storing a database for storing a control program and a measurement result of the received electric field strength, and a ROM 303 for storing a boot program for starting the apparatus.
【００１７】また、無線端末１０１〜１１０には、各部
を制御するオペレーションシステム（ＯＳ）を格納する
ディスク装置３０４と、入力情報を送出し、使用者が操
作するキーボードなどの入力装置３０５とを有してい
る。また、処理データなどの画面表示を行う液晶ディス
プレイ（ＬＣＤ）などを用いた表示装置３０６と、無線
回線を通じて他の無線端末（１０１〜１１０）との間で
データの送受信を行う無線アダプタ３０７とが設けられ
ている。さらに、テストモード時に子機と動作した際
に、親機からの送信を受信した受信電界強度を計測する
電界強度測定装置３０８と、他の無線端末（１０１〜１
１０）との間で無線送受信するためのアンテナ３０９と
を有している。Each of the wireless terminals 101 to 110 has a disk device 304 for storing an operation system (OS) for controlling each unit, and an input device 305 such as a keyboard for transmitting input information and operated by a user. doing. A display device 306 using a liquid crystal display (LCD) or the like for displaying a screen of processing data or the like, and a wireless adapter 307 for transmitting / receiving data to / from other wireless terminals (101 to 110) via a wireless line are provided. Is provided. Further, when operating with the slave unit in the test mode, an electric field intensity measurement device 308 that measures a received electric field intensity that has received a transmission from the master unit, and another wireless terminal (101 to 1).
10) and an antenna 309 for wireless transmission / reception to / from the wireless communication apparatus.
【００１８】次に、この実施形態の動作について説明す
る。図４はテストモード受信電界強度データを格納した
データベースを示す図である。図４のデータベースは、
無線端末１０１〜１１０の図２における測定結果格納部
２０６又は図３におけるＲＡＭ３０２に設けられてい
る。このデータベースは、最適な通信位置の無線端末を
短時間で親機として選定するテストモード時に、親機を
除く全無線端末１０１〜１１０での受信電界強度データ
を記憶するものである。Next, the operation of this embodiment will be described. FIG. 4 is a diagram showing a database storing test mode reception field strength data. The database in FIG.
It is provided in the measurement result storage unit 206 in FIG. 2 of the wireless terminals 101 to 110 or the RAM 302 in FIG. This database stores the received electric field intensity data of all the wireless terminals 101 to 110 except the master unit in the test mode in which the wireless terminal at the optimum communication position is selected as the master unit in a short time.
【００１９】まず、図２に示す機能ブロックを用いた動
作について説明する。図１、図２及び図４において、無
線端末１０１〜１１０が動作を開始すると、この中の任
意の無線端末、ここでは無線端末１０１のテストモード
設定部２０８からテストモード制御部２０９に対してテ
ストモードが設定される。テストモード制御部２０９は
親機制御部２１０へ自己無線端末１０１をテストモード
における親機、すなわち、仮の第１の親機としての動作
制御を行うように設定する。First, the operation using the functional blocks shown in FIG. 2 will be described. 1, 2, and 4, when the wireless terminals 101 to 110 start operating, the test mode setting unit 208 of the arbitrary wireless terminal, here, the wireless terminal 101 performs a test on the test mode control unit 209. The mode is set. The test mode control unit 209 sets the master unit control unit 210 to perform operation control of the self wireless terminal 101 as the master unit in the test mode, that is, the temporary first master unit.
【００２０】また、他の無線端末１０２〜１１０のそれ
ぞれのテストモード設定部２０８が、テストモード制御
部２０９にテストモードを設定する。テストモード制御
部２０９が子機制御部２１１をテストモードにおける仮
の子機としての動作制御を行うように設定する。以下、
無線端末１０１〜１１０における親機又は子機を同一の
参照符号をもって表示する。The test mode setting unit 208 of each of the other wireless terminals 102 to 110 sets a test mode in the test mode control unit 209. The test mode control unit 209 sets the slave unit control unit 211 to perform operation control as a temporary slave unit in the test mode. Less than,
The parent device or the child device in each of the wireless terminals 101 to 110 is indicated by the same reference numeral.
【００２１】例えば、無線端末１０１を親機１０１と表
示する。また、無線端末１０１〜１１０は、それぞれ識
別子記憶部２０１に記憶している識別子を無線送受信し
て、以下の動作における無線端末１０１〜１１０ごとの
識別を行う。さらに、親機記憶部２０２が、現在親機に
なっている無線端末１０１〜１１０を判別するためのデ
ータを記憶して以下の処理を行う。For example, the wireless terminal 101 is displayed as a master unit 101. Also, the wireless terminals 101 to 110 wirelessly transmit and receive the identifiers stored in the identifier storage unit 201, respectively, and identify each of the wireless terminals 101 to 110 in the following operation. Further, base unit storage unit 202 stores data for determining wireless terminals 101 to 110 currently serving as base units, and performs the following processing.
【００２２】次に、第１の親機１０１は親機制御部２１
０が無線送受信部２０３を制御し、アンテナ２０４を通
じて子機１０２〜１１０へ無線送信を行う。この無線送
信を子機１０２〜１１０がアンテナ２０４及び無線送受
信部２０３を通じて受信する。この受信時の電界強度を
受信電界強度測定部２０５で測定する。この子機１０２
〜１１０でそれぞれ測定した受信電界強度データが第１
の親機１０１へ無線送信して通知される。Next, the first master unit 101 is connected to the master unit control unit 21.
0 controls the wireless transmission / reception unit 203, and performs wireless transmission to the slave units 102 to 110 via the antenna 204. The slave units 102 to 110 receive the wireless transmission through the antenna 204 and the wireless transmitting / receiving unit 203. The electric field strength at the time of this reception is measured by the received electric field strength measuring section 205. This child device 102
The received electric field strength data measured in
And is notified by wireless transmission to the parent device 101.
【００２３】第１の親機１０１は、それぞれの子機１０
２〜１１０から無線送信で通知された受信電界強度デー
タをアンテナ２０４及び無線送受信部２０３で受信し、
親機制御部２１０を通じて測定結果格納部２０６の図４
に示すデータベースへ受信電界強度データ列（ａ）とし
て格納する。この後、第１の親機１０１は親機選定部２
０７が、測定結果格納部２０６に格納している図４に示
すデータベースの受信電界強度データ列（ａ）中で最小
の受信電界強度１６ｄＢの子機１０２を、第１の親機１
０１から最も離れた位置に存在するものとして仮の第２
の親機１０２に選定する。The first master unit 101 is connected to each slave unit 10
The received electric field intensity data notified by wireless transmission from 2 to 110 is received by the antenna 204 and the wireless transmitting / receiving unit 203,
4 of the measurement result storage unit 206 through the parent device control unit 210.
Is stored as a received field strength data string (a) in the database shown in FIG. After that, the first master unit 101
07 designates the slave unit 102 having the minimum reception electric field strength of 16 dB in the reception electric field intensity data string (a) of the database shown in FIG.
Tentative second
Is selected as the master unit 102 of the first embodiment.
【００２４】第１の親機１０１は図４に示すデータベー
スの受信電界強度データ列（ａ）のデータと共に制御信
号をテストモード制御部２０９、無線送受信部２０３及
びアンテナ２０４を通じて第２の親機１０２へ無線送信
する。第２の親機１０２は、第１の親機１０１からのデ
ータベースの受信電界強度データ列（ａ）及び制御信号
をアンテナ２０４及び無線送受信部２０３を通じて受信
し、テストモード制御部２０９が取り込む。テストモー
ド制御部２０９で取り込んだ受信電界強度データ列
（ａ）が第２の親機１０２の測定結果格納部２０６に格
納される。The first master unit 101 transmits a control signal together with the data of the received electric field strength data string (a) of the database shown in FIG. 4 through the test mode control unit 209, the wireless transmission / reception unit 203 and the antenna 204. Wirelessly. The second master unit 102 receives the received electric field strength data string (a) of the database and the control signal from the first master unit 101 via the antenna 204 and the wireless transmission / reception unit 203, and the test mode control unit 209 takes in the received data. The received electric field intensity data sequence (a) fetched by the test mode control unit 209 is stored in the measurement result storage unit 206 of the second master unit 102.
【００２５】また、テストモード制御部２０９が親機制
御部２１０を親機として動作するように設定する。すな
わち、これまでの子機１０２が第２の親機１０２として
動作するように設定される。この第２の親機１０２でも
親機１０１と同様に動作して子機１０１，１０３〜１１
０との間の受信電界強度データを収集する。この第２の
親機１０２が収集した受信電界強度データを図４中のデ
ータベースに受信電界強度データ列（ｂ）として格納す
る。The test mode control unit 209 is set so that the master unit control unit 210 operates as a master unit. That is, the setting is made so that the slave unit 102 operates as the second master unit 102. The second master unit 102 operates in the same manner as the master unit 101 and operates as slave units 101 and 103 to 11.
Collect the received field strength data between 0. The received electric field intensity data collected by the second master unit 102 is stored in the database in FIG. 4 as a received electric field intensity data string (b).
【００２６】次に、第２の親機１０２は、親機選定部２
０７で第１の親機１０１から無線送信されて来た受信電
界強度データ列（ａ）と、自己が収集した図４に示すデ
ータベースの受信電界強度データ列（ｂ）との子機１０
１，１０３〜１１０ごとの受信電界強度の加算値が最小
（２０ｄＢ，２４ｄＢ）の無線端末１０３を、第１及び
第１の親機１０１，１０２から共に離れた位置に存在す
るものとして、仮の第３の親機１０３に選定する。Next, the second master unit 102 is connected to the master unit selection unit 2.
The slave unit 10 receives the received electric field intensity data sequence (a) wirelessly transmitted from the first master unit 101 at 07 and the received electric field intensity data sequence (b) of the database shown in FIG.
The wireless terminal 103 having the minimum value (20 dB, 24 dB) of the received electric field strength for each of the wireless terminals 103, 103 to 110 is assumed to be located at a position distant from both the first and first base units 101, 102. The third master unit 103 is selected.
【００２７】この後、第２の親機１０２が、測定結果格
納部２０６に格納している図４に示すデータベースの受
信電界強度データ列（ｂ）と共に、制御信号を子機１０
３へ無線送信する。子機１０３は、第２の親機１０２の
場合と同様に動作して仮の第３の親機１０３として動作
するように設定される。この第３の親機１０３でも同様
にして図４に示すデータベースの受信電界強度データ列
（ｃ）を収集する。Thereafter, the second master unit 102 transmits a control signal together with the received electric field strength data string (b) of the database shown in FIG.
3 for wireless transmission. The slave unit 103 is set to operate in the same manner as the second master unit 102 and to operate as a temporary third master unit 103. Similarly, the third master unit 103 collects the received field strength data sequence (c) of the database shown in FIG.
【００２８】このようにして、テストモード時に複数台
Ｍ（Ｍ≧２）、ここでは第１から第３の親機１０１〜１
０３で図４に示すデータベースの受信電界強度データ列
（ａ）（ｂ）（ｃ）を収集し、仮の第３の親機１０３の
データベースに受信電界強度データ列（ａ）（ｂ）
（ｃ）が同時に格納される。第３の親機１０３は親機制
御部２１０の制御によって、子機１０１〜１１０のそれ
ぞれの受信電界強度データ列（ａ）（ｂ）（ｃ）から受
信電界強度レベルの最小値を選択した図４に示すデータ
ベースの受信電界強度データ列（ｄ）を作成して測定結
果格納部２０６に格納する。As described above, in the test mode, a plurality of units M (M ≧ 2), here, the first to third master units 101 to 1
At 03, the received electric field intensity data strings (a), (b), and (c) of the database shown in FIG. 4 are collected, and the received electric field intensity data strings (a) (b) are stored in the temporary third base unit 103 database.
(C) is stored simultaneously. The figure in which the third master unit 103 selects the minimum value of the reception electric field intensity level from the reception electric field intensity data strings (a), (b), and (c) of the slave units 101 to 110 under the control of the main unit control unit 210. Then, a received field strength data sequence (d) of the database shown in FIG. 4 is created and stored in the measurement result storage unit 206.
【００２９】このデータベースの受信電界強度データ列
（ｄ）から受信電界強度レベルが大きい方から順に任意
の台数の無線端末１０１〜１１０を選択する。図１に示
す例では、受信電界強度データ列（ｄ）における点線で
囲んだ受信電界強度レベルが順に大きい値である５３ｄ
Ｂ，３５ｄＢ，３３ｄＢのエリア１１１内の無線端末１
０４，１０６，１０７を、他の子機１０１〜１０３，１
０５，１０８〜１１０に対する最適なサービスエリアを
形成する最終的な親機の候補として選定する。An arbitrary number of wireless terminals 101 to 110 are selected from the received electric field strength data sequence (d) of this database in order from the one with the highest received electric field strength level. In the example shown in FIG. 1, the reception field strength level surrounded by a dotted line in the reception field strength data string (d) is 53d which is a value that increases in order.
B, wireless terminal 1 in area 111 of 35 dB and 33 dB
04, 106 and 107 to the other slave units 101 to 103 and 1
05, 108 to 110 is selected as a final master unit candidate that forms an optimal service area.
【００３０】この場合、図１に示すように子機１０４と
仮の親機１０１との間の受信電界強度が６０ｄＢ、子機
１０４と仮の親機１０２との間の受信電界強度が５４ｄ
Ｂ、また、子機１０４と仮の親機１０３との間の受信電
界強度が５３ｄＢとなる。In this case, as shown in FIG. 1, the reception electric field strength between the slave unit 104 and the temporary master unit 101 is 60 dB, and the reception electric field intensity between the slave unit 104 and the temporary master unit 102 is 54 dB.
B, and the received electric field strength between the slave unit 104 and the temporary master unit 103 is 53 dB.
【００３１】次に、図３の具体的な構成による動作につ
いて説明する。図５及び図６は具体的な構成による動作
の処理手順を示すフローチャートである。図１、図３、
図４、図５及び図６の例でも、図２及び図４を用いた説
明と基本的に同様の処理を行う。まず、ステップＳ６０
１によって、全ての無線端末１０１〜１１０は、ＣＰＵ
３０１がＲＡＭ３０２から読み出した制御用プログラム
及びＲＯＭ３０３読み出したブートプログラムに基づい
て電源の投入を認識し、テストモードの子機として設定
される。次のステップＳ６０２で、親機変更要求の受信
待機状態になる。Next, the operation of the specific configuration of FIG. 3 will be described. 5 and 6 are flowcharts showing the processing procedure of the operation according to the specific configuration. 1, 3,
4, 5 and 6 also perform basically the same processing as described with reference to FIGS. First, step S60
1, all the wireless terminals 101 to 110
Based on the control program read out from the RAM 302 and the boot program read out from the ROM 303, the power supply 301 is recognized as being turned on, and is set as a slave in the test mode. In the next step S602, the process enters a standby state for receiving a master device change request.
【００３２】この親機変更要求が得られない場合（Ｎ
ｏ）、ステップＳ６０３で入力装置３０５からの親機の
設定を判断し、親機の設定がない場合（Ｎｏ）、ステッ
プＳ６０４でＣＰＵ３０１がアンテナ３０９及び電界強
度測定装置３０８を通じた受信電界強度データの取り込
み要求を繰り返す。ステップＳ６０３で入力装置３０５
からの親機の設定をＣＰＵ３０１で取り込んだ場合（Ｙ
ｅｓ）、ステップＳ６０５で、ＣＰＵ３０１が自己無線
端末（１０１〜１１０のいずれか）をテストモードでの
仮の第１の親機に設定する制御を行う。When the master unit change request cannot be obtained (N
o), in step S603, the setting of the master unit from the input device 305 is determined. If there is no setting of the master unit (No), the CPU 301 determines in step S604 the received electric field intensity data transmitted through the antenna 309 and the electric field intensity measuring device 308. Repeat the capture request. In step S603, the input device 305
The setting of the master unit from the CPU 301 is taken by the CPU 301 (Y
es), in step S605, the CPU 301 performs control to set the self wireless terminal (any of 101 to 110) as a temporary first master unit in the test mode.
【００３３】次に、仮の第１の親機が自己無線端末の識
別子をＣＰＵ３０１の制御、かつ、無線アダプタ３０
７、アンテナ３０９を通じて無線送信し、同時にステッ
プＳ６０６で受信電界強度データの収集要求を他の自己
無線端末（１０１〜１１０）へ無線送信する。ここで、
自己無線端末が子機として設定されている場合、ステッ
プＳ６０４で受信電界強度の収集要求が受信されること
になる。このステップＳ６０４で受信電界強度データの
収集要求を受信した場合（Ｙｅｓ）、次のステップＳ６
０７で、テストモードでの仮の第１の親機の無線端末
（１０１〜１１０のいずれか）からの送信を受信した際
の受信電界強度を測定する。Next, the temporary first master unit controls the CPU 301 for the identifier of its own wireless terminal, and the wireless adapter 30
7. Radio transmission is performed via the antenna 309, and at the same time, in step S606, a request for collecting received field intensity data is transmitted wirelessly to the other self-wireless terminals (101 to 110). here,
If the own wireless terminal is set as a slave, a request to collect the received electric field strength is received in step S604. If a request to collect the received electric field strength data is received in this step S604 (Yes), the next step S6
At 07, the reception electric field strength when the transmission from the wireless terminal (any one of 101 to 110) of the temporary first master unit in the test mode is received is measured.
【００３４】次に、ステップＳ６０８で受信電界強度の
測定結果データを第１の親機へＣＰＵ３０１の制御、か
つ、無線アダプタ３０７、アンテナ３０９通じて無線送
信する。ステップＳ６０９で子機からの受信電界強度を
受信した場合（Ｙｅｓ）、次のステップＳ６１０によっ
て受信した受信電界強度データをＲＡＭ３０２に記憶し
ている図４に示すデータベースに受信電界強度データ列
（ａ）として格納する。Next, in step S608, the measurement result data of the received electric field strength is controlled by the CPU 301 and transmitted wirelessly to the first master unit via the wireless adapter 307 and the antenna 309. If the received electric field strength from the slave unit is received in step S609 (Yes), the received electric field strength data string (a) is stored in the database shown in FIG. Stored as
【００３５】ステップＳ６１１で子機からの受信電界強
度データの無線送信に対する受信待機時間が所定時間を
経過した場合（Ｙｅｓ）、ステップＳ６１２でテストモ
ードにおけるＭ台の仮の親機の無線端末（１０１〜１１
０中のＭ台）によって、受信電界強度データの収集が完
了したか否かを確認する。In step S611, if the reception standby time for the wireless transmission of the received electric field strength data from the slave unit has passed a predetermined time (Yes), in step S612, the wireless terminals (101) of the M temporary master units in the test mode are set. ~ 11
(M in 0) to confirm whether the collection of the received electric field intensity data is completed.
【００３６】ここで、受信電界強度データの収集が完了
していない場合（Ｎｏ）、ステップＳ６１３で受信電界
強度データの収集結果から、第１の親機から現在の親機
までの受信電界強度の加算値が最小の無線端末を新しい
第２の親機として選定し、ステップＳ６１４で第１の親
機から第２の親機への変更を行うことを、残りの無線端
末へＣＰＵ３０１の制御及び無線アダプタ３０７及びア
ンテナ３０９を通じて無線送信する。Here, if the reception electric field intensity data has not been collected (No), in step S613, the reception electric field intensity data from the first master unit to the current master unit is obtained from the collection result of the reception electric field intensity data. The wireless terminal having the smallest added value is selected as the new second master unit, and the change from the first master unit to the second master unit is performed in step S614. Wireless transmission is performed through the adapter 307 and the antenna 309.
【００３７】そして、ステップＳ６１５で図４に示すデ
ータベースに格納している受信電界強度レベル列（ｂ）
のデータを、新たな仮の第２の親機へＣＰＵ３０１の制
御及び無線アダプタ３０７及びアンテナ３０９を通じた
無線送信によって転送する。この結果、第１の親機がス
テップＳ６１６でテストモードによる子機に設定し直さ
れる。Then, at step S615, the received electric field strength level sequence (b) stored in the database shown in FIG.
Is transferred to a new temporary second master unit by control of the CPU 301 and wireless transmission through the wireless adapter 307 and the antenna 309. As a result, the first master unit is reset to the slave unit in the test mode in step S616.
【００３８】新たな仮の第２の親機では、ステップＳ６
０２で親機変更要求を受信した場合（Ｙｅｓ）、ステッ
プＳ６１７で受信電界強度データの受信待機状態とな
り、ここで受信された場合（Ｙｅｓ）、ステップＳ６１
８で受信電界強度データを自己無線端末の図４に示すデ
ータベースへ受信電界強度データ列（ｂ）として格納
し、ステップＳ６０５で仮の第２の親機として動作する
ようにＣＰＵ３０１の制御で設定される。In the new temporary second master unit, step S6
If a master device change request is received at 02 (Yes), the process enters a standby state for reception of received electric field strength data at step S617, and if received at this point (Yes), step S61 is performed.
In step S605, the received electric field intensity data is stored as a received electric field intensity data string (b) in the database of the self-wireless terminal shown in FIG. You.
【００３９】ステップＳ６１２でＭ台の仮の親機、例え
ば、図４に示すように子機１０１〜１０３が仮の第１か
ら第３の親機１０１〜１０３として受信電界強度データ
を収集した場合（Ｙｅｓ）、ステップＳ６１９で受信電
界強度データを格納している図４に示すデータベースを
参照して各子機１０１〜１１０ごとに仮の第１から第３
の親機１０１〜１０３との間の受信電界強度レベル中の
最小値を選択する。さらに、この中で大きな値から順に
Ｎ台の無線端末を親機の候補として選定する。In step S612, when M temporary master units, for example, the slave units 101 to 103 collect reception electric field intensity data as temporary first to third master units 101 to 103 as shown in FIG. (Yes), with reference to the database shown in FIG. 4 storing the received electric field strength data in step S619, provisional first to third units are set for each of the slave units 101 to 110.
Select the minimum value among the received electric field strength levels between the master devices 101 to 103. Further, N wireless terminals are selected as master device candidates in order from the largest value.
【００４０】図４のデータベースにおいて３台の無線端
末１０４，１０６，１０７が最終的な親機の候補とな
る。ステップＳ６２０で選定された無線端末１０４，１
０６，１０７の親機候補へ、無線通信によって通知し
て、その選定を終了する。そして、他の無線端末１０１
〜１０３，１０５，１０８〜１１０が子機になり、親機
介在通信方式によるデータ転送などが行われる。なお、
これらの処理データを表示装置３０６で画面表示して使
用者への通知を行う。In the database of FIG. 4, three wireless terminals 104, 106, and 107 become final master device candidates. Wireless terminal 104, 1 selected in step S620
Notification is made to the master unit candidates 06 and 107 by wireless communication, and the selection is terminated. And another wireless terminal 101
, 103, 105, and 108 to 110 are slave units, and data transfer and the like are performed by the master unit intervening communication method. In addition,
The processing data is displayed on a screen of the display device 306 to notify the user.
【００４１】なお、本テストモードでは、受信電界強度
レベルを用いて最適な複数の親機の候補を選定したが、
データ誤り率を用いることも出来る。すなわち、親機か
らの送信に対応して子機が送信する受信電界強度データ
の受信を行う送受信時に、親機からデータを送信する。
そして、子機から再送されたデータの誤り率を検出し、
このデータ誤り率を受信電界強度に代えて最終的な親機
の選定に用いても良い。この場合、データ誤り率と受信
電界強度との間は反比例の関係にある。In this test mode, a plurality of optimum master unit candidates are selected using the received electric field strength level.
Data error rates can also be used. That is, at the time of transmission / reception for receiving the received field strength data transmitted by the slave unit in response to the transmission from the master unit, the data is transmitted from the master unit.
Then, the error rate of the data retransmitted from the slave unit is detected,
This data error rate may be used for the final selection of the master unit instead of the reception field strength. In this case, there is an inverse relationship between the data error rate and the received electric field strength.
【００４２】[0042]
【発明の効果】以上の説明から明らかなように、本発明
のアドホック通信ネットワークシステムによれば、テス
トモードでのそれぞれの仮の親機が他の無線端末から受
信電界強度のデータを収集し、この収集結果に基づい
て、複数の子機に対して、最適なサービスエリアを形成
する通信位置の無線端末を、最終的な親機の候補として
選定している。この結果、無線端末の台数が増加した際
にも、最適な通信位置の無線端末が短時間で最終的な親
機の候補として選定できるようになる。As is apparent from the above description, according to the ad hoc communication network system of the present invention, each temporary master unit in the test mode collects the data of the received electric field strength from another wireless terminal, Based on this collection result, a wireless terminal at a communication position that forms an optimal service area for a plurality of slaves is selected as a final master unit candidate. As a result, even when the number of wireless terminals increases, the wireless terminal at the optimum communication position can be selected as a final master unit candidate in a short time.
【図１】本発明のアドホック通信ネットワークシステム
の実施形態における全体構成を示すブロック図である。FIG. 1 is a block diagram showing an overall configuration of an embodiment of an ad hoc communication network system according to the present invention.
【図２】図１に示す無線端末の機能構成を示すブロック
図である。FIG. 2 is a block diagram showing a functional configuration of the wireless terminal shown in FIG.
【図３】図１に示す無線端末の具体的な構成を示すブロ
ック図である。FIG. 3 is a block diagram showing a specific configuration of the wireless terminal shown in FIG.
【図４】実施形態にあってテストモードの計測結果であ
る受信電界強度データを格納したデータベースの内容を
示す図である。FIG. 4 is a diagram showing contents of a database storing received field strength data as a measurement result in a test mode in the embodiment.
【図５】実施形態における動作の処理手順を示すフロー
チャートの一部である。FIG. 5 is a part of a flowchart showing a processing procedure of an operation in the embodiment.
【図６】実施形態における動作の処理手順を示すフロー
チャートの一部である。FIG. 6 is a part of a flowchart showing a processing procedure of an operation in the embodiment.
１０１〜１１０ 無線端末 ２０１ 識別子記憶部 ２０２ 親機記憶部 ２０３ 無線送受信部 ２０４，３０９ アンテナ ２０５ 受信電界強度測定部 ２０６ 測定結果格納部 ２０７ 親機選定部 ２０８ テストモード設定部 ２０９ テストモード制御部 ２１０ 親機制御部 ２１１ 子機制御部 ３０１ ＣＰＵ ３０２ ＲＡＭ ３０３ ＲＯＭ ３０４ ディスク装置 ３０５ 入力装置 ３０６ 表示装置 ３０７ 無線アダプタ ３０８ 電界強度測定装置 101 to 110 Wireless terminal 201 Identifier storage unit 202 Base unit storage unit 203 Wireless transmission / reception unit 204, 309 Antenna 205 Received electric field strength measurement unit 206 Measurement result storage unit 207 Base unit selection unit 208 Test mode setting unit 209 Test mode control unit 210 Parent Device control unit 211 Remote unit control unit 301 CPU 302 RAM 303 ROM 304 Disk device 305 Input device 306 Display device 307 Wireless adapter 308 Electric field strength measurement device
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H04B 7/24 - 7/26 H04M 1/00 H04Q 7/00 - 7/38 ──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. 6 , DB name) H04B 7/24-7/26 H04M 1/00 H04Q 7/00-7/38
Claims (5)
線端末を有し、テストモード時に複数の子機との最適な
通信位置の無線端末を親機として選定するアドホック通
信ネットワークシステムであって、 少なくとも２台の無線端末がテストモードにおける仮の
親機として動作し、かつ、このテストモードでのそれぞ
れの仮の親機が他の無線端末へ送信した際の、それぞれ
の無線端末での受信電界強度のデータを収集し、この収
集結果に基づいて、複数の無線端末に対する最適な通信
位置の無線端末を、最終的な親機として選定することを
特徴とするアドホック通信ネットワークシステム。1. An ad-hoc communication network system having a plurality of wireless terminals serving as both a master unit and a slave unit and selecting a wireless terminal at an optimum communication position with the plurality of slave units in a test mode as a master unit. At least two wireless terminals operate as temporary masters in the test mode, and each of the temporary masters in the test mode transmits to another wireless terminal. An ad hoc communication network system comprising: collecting data of the received electric field strength of a wireless terminal; and selecting a wireless terminal having an optimal communication position with respect to a plurality of wireless terminals as a final master unit based on the collected result.
トワークシステムにおいて、 任意の１台の無線端末をテストモードでの仮の第１の親
機に設定し、かつ、他の残りの全無線端末を子機に設定
して、前記第１の親機が全子機へ送信し、この送信を受
信した際の受信電界強度データをそれぞれの子機が送信
し、このそれぞれの子機からの受信電界強度データを前
記第１の親機が収集し、この電界強度が最小値の子機に
前記電界強度データ及び制御信号を送信して、仮の第２
の親機に設定し、さらに、第２の親機が全子機から電界
強度データを収集し、この第１及び第２の親機で収集し
た受信電界強度の加算値が最小の子機に前記電界強度デ
ータ及び制御信号を仮の第２の親機から送信して、仮の
第３の親機に設定し、この手順をＭ回繰り返し、第１〜
第Ｍの親機で収集したそれぞれの受信電界強度データ中
のレベルの最小値から順に選び、この選んだ複数の最小
値から、さらに大きいレベルの順次で選んだ任意の台数
の無線端末を、最終的な親機の候補に選定することを特
徴とするアドホック通信ネットワークシステム。2. The ad-hoc communication network system according to claim 1, wherein an arbitrary one wireless terminal is set as a temporary first base unit in a test mode, and all other remaining wireless terminals are set. The first main unit transmits the received electric field strength data when the first main unit transmits the transmission to all the sub units, and the received electric field intensity data when the transmission is received. The first master unit collects the intensity data, transmits the electric field intensity data and the control signal to the slave unit having the minimum electric field intensity,
And the second master collects the electric field strength data from all the slaves, and the sum of the received electric field strengths collected by the first and second masters is set to the smallest slave. The electric field strength data and the control signal are transmitted from the temporary second master unit and set to the temporary third master unit, and this procedure is repeated M times, and
From the minimum values of the levels in the respective received field strength data collected by the M-th master unit, an arbitrary number of wireless terminals selected in order of higher levels from the selected minimum values are determined. An ad hoc communication network system characterized in that it is selected as a potential master unit candidate.
トワークシステムにおいて、無線端末は、 無線回線を通じてデータの無線送受信を行う無線送受信
手段と、 自己無線端末をテストモードに設定するテストモード設
定手段と、 自己無線端末を識別するための識別子を記憶した識別子
記憶手段と、 親機から送信された識別子を前記識別子記憶手段に記憶
した識別子と識別し、かつ、受信電界強度を測定する受
信電界強度測定手段と、 前記受信電界強度測定手段の測定結果を格納する測定結
果格納手段と、 前記テストモード設定手段によって設定されたテストモ
ードでの制御を行うとともに、前記測定結果格納手段に
格納した測定結果に基づいて最終的な親機を選定する処
理を行い、かつ、自己端末が親機又は子機として動作す
るための制御を行う制御手段と、 を備えることを特徴とするアドホック通信ネットワーク
システム。3. The ad hoc communication network system according to claim 1, wherein the wireless terminal performs wireless transmission and reception of data through a wireless line, a test mode setting unit configured to set the wireless terminal to a test mode, Identifier storing means for storing an identifier for identifying the self-wireless terminal; receiving electric field intensity measuring means for identifying the identifier transmitted from the master unit as the identifier stored in the identifier storing means, and measuring the received electric field intensity A measurement result storage unit that stores a measurement result of the reception electric field strength measurement unit, and performs control in a test mode set by the test mode setting unit, based on the measurement result stored in the measurement result storage unit. To perform the process of selecting the final master unit, and control the terminal to operate as the master unit or slave unit. An ad hoc communication network system, comprising: control means for performing control.
トワークシステムにおいて、 親機が子機から受信電界強度データを収集する送受信時
に、データを送信し、かつ、子機から返送された受信デ
ータの誤り率を検出し、この検出したデータ誤り率を受
信電界強度に代えて最終的な親機の選定に用いることを
特徴とするアドホック通信ネットワークシステム。4. The ad-hoc communication network system according to claim 1, wherein when the master unit transmits and receives the received electric field strength data from the slave unit, the master unit transmits data and an error in the received data returned from the slave unit. An ad hoc communication network system characterized by detecting a rate and using the detected data error rate instead of a received electric field strength for final selection of a base unit.
ネットワークシステムにおいて、 測定結果格納手段として、親機ごとに他の子機との間の
受信電界強度レベル又はデータ誤り率を格納するデータ
ベースを用いることを特徴とするアドホック通信ネット
ワークシステム。5. The ad-hoc communication network system according to claim 3, wherein a database for storing a received electric field strength level or a data error rate with another slave unit for each master unit as the measurement result storage means. An ad hoc communication network system characterized by using.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8312480A JP2867980B2 (en) | 1996-11-22 | 1996-11-22 | Ad hoc communication network system |
| AU44391/97A AU730712B2 (en) | 1996-11-07 | 1997-11-06 | Method for determining optimal parent terminal and ad hoc network for the same |
| US08/965,297 US6026303A (en) | 1996-11-07 | 1997-11-06 | Method for determining optimal parent terminal and ad hoc network system for the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8312480A JP2867980B2 (en) | 1996-11-22 | 1996-11-22 | Ad hoc communication network system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10155184A JPH10155184A (en) | 1998-06-09 |
| JP2867980B2 true JP2867980B2 (en) | 1999-03-10 |
Family
ID=18029725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8312480A Expired - Fee Related JP2867980B2 (en) | 1996-11-07 | 1996-11-22 | Ad hoc communication network system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2867980B2 (en) |
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