JP5761930B2 - Wireless communication method and wireless communication terminal - Google Patents

Wireless communication method and wireless communication terminal Download PDF

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JP5761930B2
JP5761930B2 JP2010131458A JP2010131458A JP5761930B2 JP 5761930 B2 JP5761930 B2 JP 5761930B2 JP 2010131458 A JP2010131458 A JP 2010131458A JP 2010131458 A JP2010131458 A JP 2010131458A JP 5761930 B2 JP5761930 B2 JP 5761930B2
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田邊　智弘
智弘 田邊
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コーナン電子株式会社
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Description

本発明は、無線通信方法およびその装置に関し、複数の端末間において同時に音声通話を行う為の無線通信方法およびその装置に関する。  The present invention relates to a wireless communication method and apparatus, and more particularly to a wireless communication method and apparatus for performing a voice call simultaneously between a plurality of terminals.

無線電波を使って音声通信を行う無線機の分野では、工事現場における誘導、建築現場やクレーンでの連携作業、飲食店や催し物会場などにおける業務連絡用の携帯無線機や、レジャー用途などにおける個人用の無線機として各種の形態が登場してきており、例えば、簡易業務無線機やアマチュア無線機、特定小電力無線機などである。  In the field of radio equipment that uses radio waves for voice communication, guidance at construction sites, cooperative work at construction sites and cranes, portable radios for business communication at restaurants and entertainment venues, and individuals for leisure purposes Various types of wireless devices have appeared, such as simple business wireless devices, amateur wireless devices, and specific low-power wireless devices.

これらの無線機において、特に即時応答が求められる作業や常時両手を使う作業においてはプレストーク方式の無線機では都合が悪く、その為、２台の無線機間でお互いの送信周波数と受信周波数を逆転させることで双方向同時通話を可能とする複信方式の無線機が多く用いられている。しかし、この複信方式の無線機の場合、１対１での同時通話は実現できるがさらに複数の人数と同時に通話したい場合には使用することができず、当然ながら送受周波数の関係上、これらの無線機を単純に複数用意しただけでは複数での同時通話を実現することはできない。  In these radios, especially in tasks that require immediate response or operations that use both hands at all times, press talk type radios are inconvenient. Therefore, the transmission frequency and reception frequency between the two radios are different. 2. Description of the Related Art Duplex duplex radios that allow two-way simultaneous calls by reversing are often used. However, in the case of this duplex communication type radio device, one-to-one simultaneous call can be realized, but it cannot be used when more than one person wants to call at the same time. It is not possible to make a simultaneous call with a plurality of wireless devices simply by preparing a plurality of wireless devices.

そこで、従来の複数同時通話方式では、図１に示す様に親局となる１台の基地局と子局となる複数の端末から構成され、子局では端末ごとにそれぞれ異なる周波数Ｆ１〜Ｆ４を用いて送信を行い、それら複数の周波数を親局により全て同時に受信し、親局ではそれぞれ受信した子局の音声と自局の音声を一つに合成した上で周波数Ｆ５を用いて再送信を行うことにより、子局では周波数Ｆ５のみを受信することで、送受それぞれ１つの周波数を用いて複数の端末と同時に通話することを可能にしている。  Therefore, in the conventional multiple simultaneous communication method, as shown in FIG. 1, it is composed of one base station serving as a master station and a plurality of terminals serving as slave stations, and each of the slave stations has different frequencies F1 to F4. All of these frequencies are simultaneously received by the master station, and the master station synthesizes the received slave station voice and the own station voice into one, and then retransmits using the frequency F5. By doing so, the slave station receives only the frequency F5, thereby making it possible to talk simultaneously with a plurality of terminals using one frequency each for transmission and reception.

また、親局で子局の音声を合成して中継する前記方式以外での複数同時通話を実現する方法として、先行技術文献１では各端末それぞれに、全ての端末からの送信周波数を受信できるようにすることにより、複数同時通話を実現する構成も提案されている。  Further, as a method for realizing a plurality of simultaneous calls other than the above-described method in which the master station synthesizes and relays the voices of the slave stations, the prior art document 1 allows each terminal to receive transmission frequencies from all terminals. Thus, a configuration for realizing a plurality of simultaneous calls has also been proposed.

特開平０８−１１６３０５号 公報  Japanese Patent Laid-Open No. 08-116305

以上に述べた従来の複数同時通話の構成において、前者の技術では親局となる端末が複雑かつ高価になってしまう上に、一対向での最小構成においてもその親局が必要となってしまうことによる導入コストが大きいことや、全ての局が親局と通信できる必要がある為に、親局の場所を固定できない無線システムには向かないという問題点があった。また、後者の技術においても、全ての移動端末１つ１つが前者で示す親局同様の回路を搭載する必要があり、回路も複雑で端末１台１台のコストが大きくなるという問題を抱えている。  In the conventional multiple simultaneous call configuration described above, the former technique makes the terminal station as a master station complicated and expensive, and the master station is required even in a minimum configuration with one opposite side. There is a problem that it is not suitable for a wireless system in which the location of the master station cannot be fixed because the introduction cost due to this is high and all stations need to be able to communicate with the master station. Also in the latter technique, it is necessary to install a circuit similar to the parent station shown in the former in every mobile terminal, and the circuit is complicated, and the cost of each terminal increases. Yes.

本発明は前記した問題点を解決するために案出されたもので、本発明の目的は、複数の無線通信端末による同時通話を、親局となる専用端末を必要とせず、低コストに実現可能とする無線通信方法およびその装置を提供することにある。  The present invention has been devised to solve the above-described problems, and the object of the present invention is to realize simultaneous calls by a plurality of wireless communication terminals at a low cost without requiring a dedicated terminal as a master station. An object of the present invention is to provide a wireless communication method and an apparatus for enabling the method.

前記した目的を達成するために本発明に係る無線通信方法では、図３に示す回路構成により、送信側では音声をＡ／Ｄ変換回路によりデジタル化した音声データをデジタル変調回路による時分割多重方式を用いて送出し、受信側では一度受信音声メモリに格納した複数端末からの音声データを音声合成回路により合成して出力する機能を具備することで、複数端末からの送信音声を同時に受信可能な構成としている。ただし、送受同一周波数を用いた時分割多重による通信方式では送受のタイミングがずれてしまわない様に各端末同士が常に同期を取り合う必要があるが、従来の技術ではタイミングの基準となる親局がなければ複数の端末間での同期を取り合うことが非常に困難であった。そこで、本発明に係る無線通信方法では、それぞれの端末が他の端末からの受信データ及び受信タイミングによって自局の送信タイミングを自律的に補正し、複数端末間で同期を確立する方法を提供することで、複数端末間での同時通話を実現する。  In order to achieve the above object, in the wireless communication method according to the present invention, with the circuit configuration shown in FIG. 3, on the transmission side, voice data obtained by digitizing voice by an A / D conversion circuit is time-division multiplexed using a digital modulation circuit. Can be received at the same time by having the function of synthesizing and outputting the audio data from multiple terminals once stored in the received audio memory by the voice synthesis circuit on the receiving side. It is configured. However, in a communication system using time division multiplexing using the same frequency for transmission and reception, it is necessary for each terminal to always synchronize so that the timing of transmission and reception does not shift, but in the conventional technology, the master station that is the timing reference is Without it, it was very difficult to keep synchronization between a plurality of terminals. Therefore, the wireless communication method according to the present invention provides a method in which each terminal autonomously corrects its own transmission timing based on reception data and reception timing from other terminals, and establishes synchronization among a plurality of terminals. In this way, simultaneous calls between a plurality of terminals are realized.

また、本発明に係る無線通信方法はデジタル方式を用いていることで、予め通話データのフォーマットの中に音声データと制御データを別々に定義することが可能であり、従来のアナログ同時通話では難しかった制御データと音声データとを同時に伝送することが比較的簡単に実現できる。  In addition, since the wireless communication method according to the present invention uses a digital system, it is possible to separately define voice data and control data in the call data format in advance, which is difficult with the conventional analog simultaneous call. It is relatively easy to transmit control data and audio data simultaneously.

また、本発明に係る無線通信方法によると、お互いが通信エリア外となる端末同士間でも、予めグルーピング時に登録した台数が使用可能な全スロット数を下回る場合や、各端末の通信状況などにより明らかに通信エリア外となっているスロットが存在している場合において、そのどちらとも通信できる位置にあるもう一台の端末がその空きスロットを使用して受信した通話データを再送信することで、お互いが通信エリア外となる端末同士間でもお互いの通話データを受信することが可能となる。  Also, according to the wireless communication method according to the present invention, even between terminals that are out of the communication area, it is obvious if the number registered in advance at the time of grouping is less than the total number of usable slots or the communication status of each terminal. If there is a slot that is outside the communication area, the other terminal in a position where both of them can communicate with each other retransmits the call data received using the empty slot. It is possible to receive each other's call data even between terminals outside the communication area.

ここで、本発明のグルーピングの目的は装置固有ＩＤと各端末のタイムスロットの割当てを複数端末間で設定し共有することであり、その目的が達成できる方法及び手順であれば、いかなる手段を用いても構わない。  Here, the purpose of the grouping of the present invention is to set and share the device unique ID and the time slot assignment of each terminal among a plurality of terminals, and any means can be used as long as it can achieve the purpose. It doesn't matter.

この様に、本発明にかかる無線通信方式によると、グルーピングにより組付けされた複数の無線端末が同一周波数で送受を切替えて通信を行い、且つ、それぞれの端末が基地局を必要とせず自律的に同期を確立することが可能である為、複数の無線通信端末間の同時通話をより低コストに実現することが可能である。  As described above, according to the wireless communication system according to the present invention, a plurality of wireless terminals assembled by grouping perform communication by switching between transmission and reception at the same frequency, and each terminal does not need a base station and is autonomous. Therefore, simultaneous calls between a plurality of wireless communication terminals can be realized at a lower cost.

また、本発明に係る無線通信方法およびその装置によると、通話データの中に音声データと同時に制御データを付加することが容易にできる為、複数端末間で同時通話を行っている間でも、予め決めておいた任意の動作を行わせることが可能である。  In addition, according to the wireless communication method and the device according to the present invention, since it is easy to add control data simultaneously with voice data in the call data, even during simultaneous calls between a plurality of terminals in advance. Any predetermined operation can be performed.

また、本発明に係る無線通信方法およびその装置によると、お互いが通信エリア外となる端末同士でも、そのどちらとも通信できる位置に端末があることで、全ての端末間で同時通話が可能であり、実質的な通信エリア拡大の効果を得ることが可能である。  In addition, according to the wireless communication method and the device according to the present invention, terminals that are outside the communication area can communicate with each other at the same time by having terminals at positions where they can communicate with each other. It is possible to obtain a substantial communication area expansion effect.

従来の一般的な５局間での同時通話を行う装置構成を例示した図である。It is the figure which illustrated the apparatus configuration which performs the simultaneous call between the conventional general 5 stations. 本発明による５局間での同時通話を行う装置構成を例示した図である。It is the figure which illustrated the apparatus structure which performs the simultaneous call between five stations by this invention. 本発明による同時通話を行う端末の回路構成を例示した図である。It is the figure which illustrated the circuit structure of the terminal which performs the simultaneous call by this invention. 同期タイミングの平均化による同期の確立手順を例示したフロー図である。It is the flowchart which illustrated the establishment procedure of the synchronization by averaging synchronization timing. 同期タイミングの平均化による同期の確立方法を例示した図である。It is the figure which illustrated the establishment method of the synchronization by the averaging of a synchronization timing. 優先順位による同期の確立方法を例示した図である。It is the figure which illustrated the establishment method of the synchronization by priority. 制御データにより他局動作の制御を行う装置構成を例示した図である。It is the figure which illustrated the device configuration which controls other station operation by control data. 中継機能を有する３局間での同時通話を行う装置構成を例示した図である。It is the figure which illustrated the apparatus structure which performs the simultaneous call between three stations which have a relay function.

以下に添付図面を参照して本発明による複数同時通話無線方式の実施の形態を詳細に説明する。  Embodiments of a multiple simultaneous call radio system according to the present invention will be described below in detail with reference to the accompanying drawings.

図２は本発明の請求項１記載の複数同時通話無線方式による５局間での複数同時通話を行う装置構成例を示すものである。図２において、端末２１〜２５は全て同一構成の無線装置であり、予めグルーピングによりそれぞれ個別の識別番号ＩＤ１〜５と合わせて送信タイムスロットＳＬ１〜５が設定されている。  FIG. 2 shows an example of the configuration of an apparatus for performing a plurality of simultaneous calls among five stations by the multiple simultaneous call radio system according to claim 1 of the present invention. In FIG. 2, terminals 21 to 25 are all wireless devices having the same configuration, and transmission time slots SL1 to SL5 are set in advance together with individual identification numbers ID1 to ID5 by grouping.

この構成を用いて複数端末間での同期を実現する方法について図５を用いて説明する。図５（ａ）では端末２１と端末２２はお互いが通信エリア外である為、端末２１のフレームタイミングは端末２２よりも相対的に＋１０となっている状態であり、それぞれが自身のフレームタイミングにて識別番号を含む音声バースト信号を発信している様子を例示している。  A method of realizing synchronization between a plurality of terminals using this configuration will be described with reference to FIG. In FIG. 5A, since the terminal 21 and the terminal 22 are outside the communication area, the frame timing of the terminal 21 is +10 relative to the terminal 22, and each has its own frame timing. In this example, a voice burst signal including an identification number is transmitted.

この状態から端末２１と端末２２が近づきお互いが通信エリア内となった時、図５（ｂ）に示す様に端末２２では端末２１の識別番号ＩＤ１とその受信タイミングから推測されるフレームタイミング＋１０と自局のフレームタイミング±０との平均値によって自局のフレームタイミングを置換えれば＋５となり、また、端末２１からすれば自局のフレームタイミングを±０として考えるため、逆に端末２２のフレームタイミングが−１０となり、それらの平均値として−５を自局のフレームタイミングとすることで、次のフレームではお互いのフレームタイミングが補正前の基準フレームタイミングに対して＋５となり同期する。図５（ｃ）では更にこの状態から端末２３が通信エリア内となった直後の状態を示しており、端末２３は端末２１及び端末２２のフレームタイミングよりも＋３０となっている為、端末２１は自局のフレームタイミング±０と端末２２のフレームタイミング±０と端末２３のフレームタイミング＋３０との平均値によって自局のフレームタイミングを置換えれば＋１０となり、端末２２は端末２１と条件が同じなので端末２１と同様、フレームタイミングを＋１０と置換え、端末２３からすれば自局フレームタイミングを±０とするので端末２１及び端末２２のフレームタイミングはどちらも−３０となり平均値である−２０を自局のフレームタイミングに置換えることで、その結果、それぞれの端末のフレームタイミングは図５（ｄ）に示す通りとなり、複数端末間においても補正によってフレームタイミングが同期する様子を示している。この状態から更に端末２４、端末２５が通信エリア内となった場合にも、同様の手順により同期を確立することが可能である。尚、これら一連のフレームタイミング値の補正手順についての詳細フロー図を図４にて例示する。  When the terminal 21 and the terminal 22 approach each other from this state and become within the communication area, as shown in FIG. 5B, the terminal 22 receives the frame number +10 estimated from the identification number ID1 of the terminal 21 and its reception timing. If the frame timing of the local station is replaced by the average value of the frame timing of the local station ± 0, the frame timing of the terminal 22 is considered to be +0 when viewed from the terminal 21. Is −10, and the average value thereof is −5 as the frame timing of the own station, so that in the next frame, the frame timing of each other becomes +5 with respect to the reference frame timing before correction, and synchronization occurs. FIG. 5C further shows a state immediately after the terminal 23 is within the communication area from this state. Since the terminal 23 is +30 from the frame timing of the terminal 21 and the terminal 22, the terminal 21 If the frame timing of the local station is replaced by the average value of the frame timing ± 0 of the local station, the frame timing ± 0 of the terminal 22 and the frame timing +30 of the terminal 23, the terminal 22 has the same conditions as the terminal 21 because the terminal 22 has the same conditions. As in the case of 21, the frame timing is replaced with +10, and from the terminal 23, the own station frame timing is set to ± 0. Therefore, the frame timing of both the terminal 21 and the terminal 22 is -30, and the average value of -20 is set to -20. As a result, the frame timing of each terminal is shown in FIG. Ritonari shows a state in which the frame timing is synchronized by correcting even between multiple terminals. When the terminal 24 and the terminal 25 are further within the communication area from this state, synchronization can be established by the same procedure. A detailed flowchart of the correction procedure for the series of frame timing values is illustrated in FIG.

また、図２の構成を用いて複数端末間での同期を実現する方法として、請求項２記載による予め優先順位を決めておく方法もあり、その方法について図６を用いて以下に説明する。図６（ａ）では端末２１と端末２２はお互いが通信エリア外である為、端末２１のフレームタイミングは端末２２よりも相対的に＋１０となっている状態であり、それぞれが自身のフレームタイミングにて識別番号と自局が同期を行っている端末番号を含む音声バースト信号を発信している様子を例示している。尚、この時点では、どちらの端末も同期する相手が見つけられない為、同期先の端末番号は自局ＩＤを設定する。また、それぞれの端末ＩＤによる優先順位は、既にグルーピング手順の段階で決定しており、ここではＩＤ１の優先順位が一番高く、続いてＩＤ２、ＩＤ３、ＩＤ４、ＩＤ５となっているものとする。  Further, as a method of realizing synchronization between a plurality of terminals using the configuration of FIG. 2, there is a method of determining priorities according to claim 2, and this method will be described below with reference to FIG. In FIG. 6A, since the terminal 21 and the terminal 22 are outside the communication area, the frame timing of the terminal 21 is +10 relative to the terminal 22, and each has its own frame timing. In this example, the voice burst signal including the identification number and the terminal number with which the local station is synchronized is transmitted. At this point in time, neither terminal can find a partner to synchronize with, so the own station ID is set as the terminal number of the synchronization destination. Further, the priority order by each terminal ID has already been determined at the stage of the grouping procedure, and here, the priority order of ID1 is the highest, followed by ID2, ID3, ID4, and ID5.

この状態から端末２１と端末２３が近づきお互いが通信エリア内となった時、図６（ｂ）に示す様に端末２１では自局の優先順位が一番高い為、自局のフレームタイミングは固定したままとなり、端末２３では端末２１の同期先の端末番号ＩＤ１から優先順位を判断し、端末２１へ同期を合わせる様に自局のフレームタイミングを補正することで、端末２１と端末２３のフレームタイミングが同期する。図６（ｃ）では更にこの状態から端末２３と端末２２が通信エリア内となった直後の状態を示しており、端末２３は自局の通信エリア内で端末２２から音声データと同時に送出される同期先の端末番号ＩＤ２よりも端末２１から送出される同期先の端末番号ＩＤ１の方が優先順位が高い為、端末２１へ同期を合わせ、また、端末２２では、自局のＩＤ２よりも端末２３より送出される同期先の端末番号ＩＤ１の方が優先順位が高いと判断して端末２３へ同期を合わせる様に自局のフレームタイミングを補正することで、端末２１、端末２２、及び端末２３のフレームタイミングが同期する。この状態から更に端末２４、端末２５が通信エリア内となった場合にも、同様の手順により全ての端末が同期を確立することが可能である。  When the terminal 21 and the terminal 23 approach each other from this state and become within the communication area, the terminal 21 has the highest priority in the terminal 21 as shown in FIG. Thus, the terminal 23 determines the priority order from the terminal number ID1 of the synchronization destination of the terminal 21, and corrects the frame timing of the own station so as to synchronize with the terminal 21, so that the frame timing of the terminal 21 and the terminal 23 is corrected. Are synchronized. FIG. 6C shows a state immediately after the terminal 23 and the terminal 22 are within the communication area from this state, and the terminal 23 is transmitted simultaneously with the audio data from the terminal 22 within the communication area of the local station. Since the synchronization destination terminal number ID1 sent from the terminal 21 has a higher priority than the synchronization destination terminal number ID2, the terminal 21 synchronizes with the terminal 21, and the terminal 22 is synchronized with the terminal 23 rather than the own station ID2. By determining that the terminal number ID1 of the synchronization destination sent out has a higher priority and correcting the frame timing of the own station so as to synchronize with the terminal 23, the terminal 21, the terminal 22, and the terminal 23 Frame timing is synchronized. Even when the terminal 24 and the terminal 25 are further within the communication area from this state, all the terminals can establish synchronization by the same procedure.

図７は本発明を適用した制御機能を有する同時通話無線方式を適用した５局間での複数同時通話を行う装置構成例を示す。この例において、各端末には送話を制御する為の割込みスイッチが搭載され、図３の回路構成において制御データの中にその接点情報が含まれるものとする。  FIG. 7 shows an example of an apparatus configuration for performing a plurality of simultaneous calls among five stations to which a simultaneous call radio system having a control function to which the present invention is applied is applied. In this example, it is assumed that an interrupt switch for controlling transmission is mounted on each terminal, and the contact information is included in the control data in the circuit configuration of FIG.

今、端末２２〜２５の各端末がそれぞれ同時通話を行っている状態で端末２１より割込みスイッチをＯＮにしたうえで送話を開始した場合、端末２１では音声データと合わせて制御データに割込み制御信号、及び送信フレームごとに変化する通し番号を含んだものが通話データとして送信され、また、その通話データを受信した各端末側では割込み制御信号を受けてその音声データを一時的に自局の音声データに差換えて中継送信する。この時、複数の端末間で割込みによる通話データがループしない様にする為、他の端末から同時に同じ通し番号の通話データを受信した場合はより受信品質の高い方を採用し、また、古い通し番号の通話データを受信した場合はそれを無視する。Now, when each terminal of terminals 22 to 25 is making a simultaneous call and the transmission is started after turning on the interrupt switch from the terminal 21, the terminal 21 performs interrupt control on the control data together with the voice data. A signal including a signal and a serial number that changes for each transmission frame is transmitted as call data, and each terminal that receives the call data receives the interrupt control signal and temporarily transmits the voice data of its own station. Replace with data for relay transmission. At this time, in order to prevent call data due to interruption between multiple terminals from being looped, if call data with the same serial number is received simultaneously from other terminals, the one with higher reception quality is adopted, and the old serial number If call data is received, it is ignored.

これにより、複数同時通話の構成において複数の端末間で同時に通話を行っている間でも、任意の端末より各端末の制御を行うことが可能となり、緊急時や、確実に全員に伝えなければならない様な、より優先度の高い要件を他局の同時通話に割込ませる拡声的な機能を実現することが可能である。  This makes it possible to control each terminal from any terminal even during simultaneous calls between multiple terminals in a multi-simultaneous call configuration, which must be communicated to everyone in an emergency or with certainty. It is possible to realize a loud function that interrupts a higher priority requirement in the simultaneous call of other stations.

また上記構成例において、通常は受信のみを行い通話データ内の音声データを無音状態としておき、必要時だけ割込みスイッチを押して音声データを付加する様に端末を設定することで、従来のプレストーク方式とほぼ同様の動作として使用することもでき、また、これらを切換えて使用することによって、プレストーク方式と複数同時通話方式が混在することも、本発明によれば実現することが可能である。  Also, in the above configuration example, the conventional press talk method is normally set by only receiving and setting the terminal so that the voice data in the call data is silent and pressing the interrupt switch only when necessary to add the voice data. According to the present invention, it is also possible to use both of the press talk method and the multiple simultaneous calling method by switching and using them.

図８は本発明を適用した中継機能を有する同時通話無線方式における３局間での複数同時通話を行う装置構成を示す。この例において、端末２２は端末２１と端末２３の両方の通話データを受信できるが、端末２１と端末２３はお互いが通信エリアにない為、双方の通話データは直接受信できない状態を例示しており、また、本構成では許容される総端末数は５局であるのに対して予めグルーピングの際に登録された端末数は３となっており、予めグルーピングの際にＳＬ４、及びＳＬ５は使用されないことが明らかとなっている。この時、各端末では音声データの他に制御データとして自局から受信可能な端末の情報を合わせて１つの通話データとして送信することで、端末２２では端末２１と端末２３からの通話データの情報により端末２１と端末２３の位置関係を把握することが可能であるため、端末２２は端末２１の通話データを空いているＳＬ４で、また端末２３の通話データをＳＬ５で中継送信することにより、端末２１と端末２３間においても間接的にお互いの通話データが受信可能となる。  FIG. 8 shows an apparatus configuration for performing a plurality of simultaneous calls between three stations in a simultaneous call radio system having a relay function to which the present invention is applied. In this example, the terminal 22 can receive the call data of both the terminal 21 and the terminal 23, but the terminal 21 and the terminal 23 are not in the communication area, and thus the call data of both cannot be directly received. In addition, in this configuration, the total number of terminals allowed is five, whereas the number of terminals registered in advance at the time of grouping is 3, and SL4 and SL5 are not used in advance at the time of grouping. It has become clear. At this time, in each terminal, terminal information that can be received from its own station is transmitted as control data in addition to voice data, and is transmitted as one call data. In terminal 22, information on call data from terminals 21 and 23 is transmitted. Therefore, the terminal 22 relays and transmits the call data of the terminal 23 using SL4, and the terminal 22 transmits the call data of the terminal 23 using SL5. Also between the terminal 21 and the terminal 23, the mutual call data can be received indirectly.

これにより、複数同時通話の構成において全ての端末が同一通信エリア内におらず、一部通信エリア外となる端末を含む場合においても、全端末間での複数同時通話を実現することが可能である。  This makes it possible to realize multiple simultaneous calls between all terminals even when all terminals are not in the same communication area and some of the terminals are outside the communication area in the configuration of multiple simultaneous calls. is there.

１１〜１５ 従来の同時通話端末１〜５
２１〜２５ 本発明の同時通話端末１〜５
Ｆ１〜Ｆ６ 送受周波数
ＳＬ１〜ＳＬ５ 割当スロット
ＩＤ１〜ＩＤ５ 識別番号11-15 Conventional simultaneous call terminals 1-5
21-25 Simultaneous call terminals 1-5 of the present invention
F1-F6 transmission / reception frequencies SL1-SL5 assigned slot ID1-ID5 identification number

Claims (4)

全て同一構成の３台以上の時分割多重方式の無線通信端末間で各々が他の通信可能な全ての無線通信端末と送受同時通話を行う無線通信方法において、
予め各々の無線通信端末が互いに異なる送信スロットを割り当てられると共に、他の無線通信端末に割り当てられた送信スロットを共有し、
送受同時通話する他の全ての無線通信端末の送信スロットを受信する各々の無線通信端末が、
送受同時通話の通信が可能な他の無線通信端末を判定するステップと、
前記通信が可能と判定した各々の無線通信端末の割当スロットを判定するステップと、
判定した割当スロットと受信信号から前記通信が可能な他の全ての無線通信端末のフレームタイミングを判定するステップと、
自己のフレームタイミングと前記通信が可能と判定した他の全ての無線通信端末のフレームタイミングとの誤差を判定するステップと、
前記通信が可能と判定した各々の無線通信端末に対するフレームタイミングの誤差を平均するステップと、
前記平均化した誤差分に基づいて自己のフレームタイミングを変更するステップとを実行する、ことを特徴とする無線通信方法。 In a wireless communication method in which three or more time division multiplexing wireless communication terminals all having the same configuration each perform simultaneous transmission and reception calls with all other wireless communication terminals capable of communication,
Each wireless communication terminal is assigned a transmission slot different from each other in advance and shares a transmission slot assigned to another wireless communication terminal,
Each wireless communication terminal that receives the transmission slots of all other wireless communication terminals that perform simultaneous transmission and reception calls,
And determining the other wireless communication terminal capable of communicating handset simultaneous calls,
And determining the allocated slots of the radio communication terminals each that were judged to be said communication,
Determining frame timing of all of the wireless communication terminal from the assigned slot and the received signal of the other capable of the communication is determined,
Determining an error between its own frame timing and the frame timing of all other wireless communication terminals determined to be capable of communication ;
Averaging frame timing errors for each wireless communication terminal determined to be capable of communication ;
And a step of changing the frame timing of the self based on the error amount obtained by the averaging, wireless communication method, characterized in that. ３台以上の時分割多重方式の無線通信端末間で各々が他の通信可能な全ての無線通信端末と送受同時通話を行う無線通信方法において、
予め各々の無線通信端末が互いに異なる送信スロットと同期タイミングの優先順位を示す個別のＩＤ番号を割り当てられると共に、他の無線通信端末に割り当てられた送信スロットを共有し、
送受同時通話する他の全ての無線通信端末の送信スロットを受信する各々の無線通信端末が、
通信可能な他の無線通信端末を判定するステップと、
通信可能と判定した各々の無線通信端末より受信した通話データに含まれる同期先ＩＤ番号を判定するステップと、
判定した各々の同期先ＩＤ番号を比較して、その中で最も優先順位の高い同期先ＩＤ番号を持つ無線通信端末を判定するステップと、
判定した無線通信端末の同期先ＩＤ番号が自己のＩＤ番号より優先順位が高い場合に、当該無線通信端末の割当スロットを判定するステップと、
判定した割当スロットと受信信号から当該無線通信端末のフレームタイミングを判定するステップと、
判定したフレームタイミングと自己のフレームタイミングとの誤差を判定するステップと、
判定した無線通信端末との誤差分に基づいて自己のフレームタイミングを変更するステップと、
前記にて自己のフレームタイミングを変更する為に判定した同期先のＩＤ番号、もしくは自己のＩＤ番号のどちらか優先順位の高い方を、自己の同期先のＩＤ番号として通話データに含めて送信するステップとを実行する、ことを特徴とする無線通信方法。 In a wireless communication method in which three or more time division multiplexing wireless communication terminals each perform simultaneous transmission and reception calls with all other wireless communication terminals capable of communication,
Advance with each of the wireless communication terminal is allocated a different transmission slot and the individual ID number which indicates the priority of the synchronization timing, share the transmission slot assigned to another wireless communication terminal,
Each wireless communication terminal that receives the transmission slots of all other wireless communication terminals that perform simultaneous transmission and reception,
Determining other wireless communication terminals capable of communication;
Determining a synchronization destination ID number included in call data received from each wireless communication terminal determined to be communicable ;
Comparing each determined synchronization destination ID number, and determining a wireless communication terminal having a synchronization destination ID number with the highest priority among them,
Determining the assigned slot of the wireless communication terminal when the determined synchronization destination ID number of the wireless communication terminal has a higher priority than the self ID number;
Determining the frame timing of the wireless communication terminal from the determined allocation slot and the received signal;
Determining an error between the determined frame timing and the self frame timing;
Changing own frame timing based on an error with the determined wireless communication terminal;
The synchronization destination ID number determined to change its own frame timing or its own ID number, whichever has the higher priority, is included in the call data as its own synchronization destination ID number and transmitted. performing the steps, the wireless communication method characterized by. 全て同一構成の３台以上の時分割多重方式の無線通信端末間で各々が他の通信可能な全ての無線通信端末と送受同時通話を行う無線通信方法に使用される無線通信端末において、
予め他の無線通信端末と異なる送信スロットを割り当て可能な手段と、
他の無線通信端末の割当スロットを記憶する手段と、
送受同時通話の通信が可能な他の無線通信端末を判定する手段と、
前記通信が可能と判定した各々の無線通信端末の割当スロットを判定する手段と、
判定した割当スロットと受信信号から前記通信が可能な他の全ての無線通信端末のフレームタイミングを判定する手段と、
自己のフレームタイミングと前記通信が可能と判定した他の全ての無線通信端末のフレームタイミングとの誤差を判定する手段と、
判定した各々の無線通信端末に対するフレームタイミングの誤差を平均する手段と、
前記平均化した誤差分に基づいて自己のフレームタイミングを変更する手段とを有し、
送受同時通話する他の全ての無線通信端末の送信スロットを受信する、ことを特徴とする無線通信端末。 In a wireless communication terminal used in a wireless communication method in which all three or more time-division multiplexing wireless communication terminals having the same configuration are used for a wireless communication method in which simultaneous communication with all other wireless communication terminals capable of communication is performed,
Means capable of assigning a transmission slot different from other wireless communication terminals in advance;
Means for storing allocation slots of other wireless communication terminals;
It means for determining another wireless communication terminal capable of communicating handset simultaneous calls,
It means for determining the allocation slot of the radio communication terminals each that were judged to be said communication,
Means for determining frame timing of all other wireless communication terminal capable of the communication from the determined assignment slot received signal,
Means for determining an error between its own frame timing and the frame timing of all other wireless communication terminals determined to be capable of communication ;
Means for averaging frame timing errors for each determined wireless communication terminal;
Means for changing its own frame timing based on the averaged error amount,
Receiving a transmission slot of any other wireless communication terminal which transmits and receives simultaneous calls, the wireless communication terminal, characterized in that. ３台以上の時分割多重方式の無線通信端末間で各々が他の通信可能な全ての無線通信端末と送受同時通話を行う無線通信方法に使用される無線通信端末において、
予め他の無線通信端末と異なる送信スロットを割り当てられると共に、他の無線通信端末に割り当てられた送信スロットを共有し、
同期タイミングの優先順位を示す個別のＩＤ番号を割り当て可能な手段と、
他の無線通信端末の割当スロットを記憶する手段と、
通信可能な他の無線通信端末を判定する手段と、
通信可能と判定した各々の無線通信端末の通話データに含まれる同期先のＩＤ番号を判定する手段と、
判定した各々の同期先のＩＤ番号を比較して、その中で最も優先順位の高い同期先のＩＤ番号を持つ無線通信端末を判定する手段と、
判定した無線通信端末の同期先のＩＤ番号が自己のＩＤ番号より優先順位が高い場合に、当該無線通信端末の割当スロットを判定する手段と、
判定した割当スロットと受信信号から当該無線通信端末のフレームタイミングを判定する手段と、
判定したフレームタイミングと自己のフレームタイミングとの誤差を判定する手段と、
判定した無線通信端末との誤差分に基づいて自己のフレームタイミングを変更する手段と、
前記にて自己のフレームタイミングを変更する為に判定した同期先のＩＤ番号、もしくは自己のＩＤ番号のどちらか優先順位の高い方のＩＤ番号を、自己の同期先のＩＤ番号として通話データに含めて送信する手段とを有し、
送受同時通話する他の全ての無線通信端末の送信スロットを受信する、ことを特徴とする無線通信端末。 In a wireless communication terminal used for a wireless communication method in which three or more time division multiplexing wireless communication terminals each perform simultaneous transmission and reception calls with all other wireless communication terminals capable of communication,
A transmission slot different from that of other wireless communication terminals is assigned in advance, and a transmission slot assigned to another wireless communication terminal is shared ,
And against possible means Ri allocate an individual ID number that indicates the priority of the synchronization timing,
Means for storing allocation slots of other wireless communication terminals;
Means for determining other wireless communication terminals capable of communication;
Means for determining an ID number of a synchronization destination included in the call data of each wireless communication terminal determined to be communicable ;
Means for comparing the determined ID numbers of the respective synchronization destinations, and determining a wireless communication terminal having the ID number of the synchronization destination with the highest priority among them;
Means for determining an allocation slot of the wireless communication terminal when the determined ID number of the synchronization destination of the wireless communication terminal has a higher priority than its own ID number;
Means for determining the frame timing of the wireless communication terminal from the determined allocation slot and the received signal;
Means for determining an error between the determined frame timing and the self frame timing;
Means for changing own frame timing based on an error with the determined wireless communication terminal;
The ID number of the synchronization destination determined in order to change its own frame timing or the ID number of the higher priority of its own ID number is included in the call data as its own synchronization destination ID number. And means for transmitting
Receiving a transmission slot of any other wireless communication terminal which transmits and receives simultaneous calls, the wireless communication terminal, characterized in that.
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