JP2002191073A - Wireless communication system, and communication method in the wireless communication system - Google Patents
Wireless communication system, and communication method in the wireless communication systemInfo
- Publication number
- JP2002191073A JP2002191073A JP2000387311A JP2000387311A JP2002191073A JP 2002191073 A JP2002191073 A JP 2002191073A JP 2000387311 A JP2000387311 A JP 2000387311A JP 2000387311 A JP2000387311 A JP 2000387311A JP 2002191073 A JP2002191073 A JP 2002191073A
- Authority
- JP
- Japan
- Prior art keywords
- wireless communication
- data
- transmission
- communication system
- station
- 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.)
- Pending
Links
Landscapes
- Communication Control (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、無線通信システ
ム、及び無線通信システムにおける通信方法に関し、よ
り詳しくは複数の無線通信装置を使用して無線通信を行
う無線通信システム、及び無線通信システムにおける通
信方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system and a communication method in the wireless communication system, and more particularly, to a wireless communication system for performing wireless communication using a plurality of wireless communication devices, and communication in the wireless communication system. About the method.
【０００２】[0002]
【従来の技術】携帯電話等の無線通信装置や無線ＬＡＮ
等を使用して無線通信を行う無線通信システムは、いつ
でも、どこでも通信可能な通信方式として、近年目覚し
い普及をしてきており、無線通信を利用した機器間通信
規約としてブルーツース規格も既に登場してきている。2. Description of the Related Art Wireless communication devices such as mobile phones and wireless LANs
In recent years, wireless communication systems that perform wireless communication by using wireless communication have become remarkably popular as communication methods that can communicate anytime, anywhere, and the Bluetooth standard has already appeared as a communication protocol between devices using wireless communication. .
【０００３】また、近年における半導体技術等の進歩に
より、無線通信装置の低コスト化や小形化、消費電力の
低下にも著しい進歩があり、有線ケーブルを介すること
なく簡単に電子機器同士を無線接続することが可能にな
ってきている。さらに、通信媒体についても音声データ
のみならず、テキストデータや画像データ等、様々な媒
体でのニーズが現れてきている。特に、次世代携帯型無
線通信システムの更なるコミュニケーション能力の向上
を考慮すると、画像データの通信機能が重要になってく
ると考えられる。[0003] In addition, with recent advances in semiconductor technology and the like, remarkable progress has been made in reducing the cost, size, and power consumption of wireless communication devices, and electronic devices can be easily wirelessly connected without a wired cable. Is becoming possible. Further, with respect to communication media, needs for various media such as text data and image data as well as audio data have emerged. In particular, it is considered that the communication function of image data becomes important in consideration of further improvement of the communication capability of the next-generation portable wireless communication system.
【０００４】そして、画像データの通信に関しては、従
来より、通常の銀塩カメラで撮影した撮像データをミニ
ラボ等によって現像、焼き付けを行い、該焼き付けた画
像データをスキャナ等でデジタル化して伝送する方法が
知られている。[0004] As for communication of image data, conventionally, a method of developing and printing image data shot by a normal silver halide camera by a mini lab or the like, digitizing the printed image data by a scanner or the like, and transmitting the data. It has been known.
【０００５】ところが、近年では、デジタルカメラの飛
躍的な性能向上により、所謂Ｌサイズ程度の印字であれ
ば、銀塩カメラに近い画質で撮影を行えるようになって
きており、斯かるデジタルカメラの高画質化によって画
像データの実用性は一段と高まってきている。そして、
デジタルカメラと無線通信システムを使って画像データ
を伝送する方法は、銀塩カメラで撮影した撮像データを
デジタル化して伝送する方法に比べ、大幅な時間短縮や
手間の省略が可能となり、遥かに効率的と考えられる。In recent years, however, with the dramatic improvement in the performance of digital cameras, it has become possible to capture images of a so-called L size with a quality close to that of a silver halide camera. The practicality of image data has been further enhanced by improving image quality. And
The method of transmitting image data using a digital camera and a wireless communication system can greatly reduce the time and labor compared to the method of transmitting image data captured by a silver halide camera in digital form, resulting in much higher efficiency. It is considered a target.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記従
来技術においては、電子機器間の無線通信の規格化や、
半導体技術の進歩等による無線通信装置の低コスト化な
どにより、無線接続を介して簡単にテキストデータや画
像データを伝送することは可能となったが、大容量のテ
キストデータや画像データを通信するには、伝送速度が
遅く、伝送処理に長時間を要するという問題点があっ
た。However, in the above prior art, standardization of wireless communication between electronic devices,
Due to the cost reduction of wireless communication devices due to advances in semiconductor technology, etc., it has become possible to easily transmit text data and image data via wireless connection, but it is necessary to communicate large amounts of text data and image data. Has a problem that the transmission speed is slow and the transmission process takes a long time.
【０００７】また、高速で無線伝送を行う方法として
は、送信データを送信側無線通信装置内でシリアルーパ
ラレル変換し、ＣＤＭ（Code Division Multiple:符号
分割多重）方式等を使用して機器内部で多重化して送信
する方法もあるが、装置が複雑化してコストの高騰化を
招く虞がある等、実現性が困難であるという問題点があ
った。As a method of performing high-speed wireless transmission, transmission data is serial-parallel converted in a transmission-side wireless communication device, and is internally provided in a device using a CDM (Code Division Multiple) method or the like. Although there is a method of multiplexing and transmitting, there is a problem that the feasibility is difficult, for example, there is a possibility that the apparatus becomes complicated and cost increases.
【０００８】本発明はこのような問題点に鑑みなされた
ものであって、大量の通信データを高速且つ低コストで
無線通信することのできる無線通信システム及び無線通
信システムにおける通信方法を提供することを目的とす
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a wireless communication system and a communication method in a wireless communication system capable of wirelessly communicating a large amount of communication data at high speed and at low cost. With the goal.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に本発明に係る無線通信システムは、送信データを複数
のデータ列に分割する分割手段と、該分割されたデータ
列を多重化して送信する送信手段と、多重化して送信さ
れてきたデータ列を受信する受信手段と、該受信手段に
より受信したデータ列を複合する複合手段とを備えてい
ることを特徴としている。In order to achieve the above object, a radio communication system according to the present invention comprises a dividing means for dividing transmission data into a plurality of data strings, and multiplexing the divided data strings for transmission. Transmitting means, a receiving means for receiving the multiplexed data sequence, and a combining means for combining the data sequence received by the receiving means.
【００１０】また、本発明に係る無線通信システムにお
ける通信方法は、データ送信時には、送信データを複数
のデータ列に分割した後、該データ列を多重化して送信
し、データ受信時には多重化して送信されてきたデータ
列を受信した後、該データ列を複合することを特徴とし
ている。In a communication method in a wireless communication system according to the present invention, at the time of data transmission, transmission data is divided into a plurality of data strings, and the data strings are multiplexed and transmitted. The method is characterized in that after receiving the data sequence, the data sequence is combined.
【００１１】尚、本発明のその他の特徴は、下記の発明
の実施の形態により明らかとなろう。The other features of the present invention will be apparent from the following embodiments of the present invention.
【００１２】[0012]
【発明の実施の形態】図１は本発明に係る無線通信シス
テムの一実施の形態を示すシステム構成図であって、該
無線通信システムは、本実施の形態では第１の局１と第
２の局２とで構成されている。FIG. 1 is a system configuration diagram showing an embodiment of a wireless communication system according to the present invention. In this embodiment, the wireless communication system comprises a first station 1 and a second station 1. And a station 2.
【００１３】第１の局１は、シリアル送信データをパラ
レル送信データに変換したり、第２の局２から送信され
てきたパラレルデータの同期と復調を行ってシリアルデ
ータを生成するデータ分割・複合変換器３と、該データ
分割・複合変換器３から出力されるパラレル送信データ
や第２の局２から送信されてくる送信データを受信する
第１〜第３の無線通信装置４ａ〜４ｃと、該第１〜第３
の無線通信装置４ａ〜４ｃに接続されて第２の局２との
間で電波の送受信を司る第１〜第３のアンテナ５ａ〜５
ｃとを有している。The first station 1 converts serial transmission data into parallel transmission data, or synchronizes and demodulates parallel data transmitted from the second station 2 to generate serial data. A converter 3; first to third wireless communication devices 4a to 4c for receiving parallel transmission data output from the data division / combination converter 3 and transmission data transmitted from the second station 2; The first to third
First to third antennas 5a to 5c connected to the wireless communication devices 4a to 4c and controlling transmission and reception of radio waves to and from the second station 2.
c.
【００１４】また、第２の局２も、第１の局１と同様の
構成とされ、第１〜第３のアンテナ６ａ〜６ｃ、第１〜
第３の無線通信装置７ａ〜７ｃ、及びデータ分割・複合
変換器８を有している。The second station 2 has the same configuration as that of the first station 1, and includes first to third antennas 6a to 6c and first to third antennas 6a to 6c.
It has third wireless communication devices 7 a to 7 c and a data division / combination converter 8.
【００１５】そして、第１〜第３の無線通信装置４ａ〜
４ｃ、７ａ〜７ｃは、一定周期毎に送信周波数を切り替
えるＲＦ（Radio Frequency）部、パケットの生成や無
線リンクの制御を行うベースバンド部、及び論理リンク
の制御等を行うリンクマネージャ部を備えている。The first to third wireless communication devices 4a to 4a
Each of 4c and 7a to 7c includes an RF (Radio Frequency) unit that switches a transmission frequency at regular intervals, a baseband unit that performs packet generation and wireless link control, and a link manager unit that performs logical link control and the like. I have.
【００１６】また、本実施の形態では、無線通信方式と
しては、ブルーツース規格で採用されているスペクトラ
ム拡散通信の周波数ホッピング方式（ＳＳ−ＦＨ方式）
が使用される。そして、周波数帯域は２．４ＧＨz帯
（２４７１〜２４９７ＭＨｚ）が使用され、１タイムス
ロット毎にランダムに周波数を切り替えて送信すること
により他チャンネルとの干渉を防いでいる。さらに送信
する際には１パケットを１タイムスロットで送信し、同
一周波数上で異なるタイミングにより送信と受信を交互
に行うＴＤＤ（Time Division Duplex）方式で双方向通
信を実現している。In this embodiment, the wireless communication system is a frequency hopping system (SS-FH system) of spread spectrum communication adopted in the Bluetooth standard.
Is used. The 2.4 GHz frequency band (2471 to 2497 MHz) is used as the frequency band, and interference with other channels is prevented by randomly switching the frequency for each time slot and transmitting. Further, when transmitting, one packet is transmitted in one time slot, and bidirectional communication is realized by a TDD (Time Division Duplex) system in which transmission and reception are alternately performed at different timings on the same frequency.
【００１７】そして、第１〜第３の無線通信装置４ａ〜
４ｃは、各々別々のホッピングシーケンス及びホッピン
グタイミングで周波数ホッピングしており、ホッピング
シーケンス及びホッピングタイミングは、例えば、第１
〜第３の無線通信装置４ａ〜４ｃの有するアドレス及び
クロックにより決定される。The first to third wireless communication devices 4a to 4a
4c performs frequency hopping with separate hopping sequences and hopping timings, respectively.
To the addresses and clocks of the third to fourth wireless communication devices 4a to 4c.
【００１８】次に、図１において、第１の局１から第２
の局２に無線伝送する場合の動作を説明する。Next, referring to FIG.
The operation when wireless transmission is performed to the station 2 will be described.
【００１９】まず、第１の局１では、シリアル送信デー
タがデータ分割・複合変換器３で３つのパラレル送信デ
ータに変換され、該変換されたパラレル送信データは夫
々第１〜第３の無線通信装置４ａ〜４ｃに並列的に入力
される。そして、これら第１〜第３の無線通信装置４ａ
〜４ｃでは、入力されたパラレル送信データを、各無線
通信装置４ａ〜４ｃが有するアドレス及びクロックによ
り決定されたホッピングシーケンス、及びホッピングタ
イミングで周波数ホッピングによる多重化伝送を行う。First, in the first station 1, the serial transmission data is converted into three parallel transmission data by the data division / composite converter 3, and the converted parallel transmission data is respectively converted into first to third radio communication data. The signals are input to the devices 4a to 4c in parallel. Then, the first to third wireless communication devices 4a
In 4c to 4c, multiplexed transmission by frequency hopping is performed on the input parallel transmission data at the hopping sequence and hopping timing determined by the addresses and clocks of the wireless communication devices 4a to 4c.
【００２０】尚、この場合、第１〜第３の無線通信装置
４ａ〜４ｃは、データ伝送する際に、それぞれの送信先
となる第２の局２の無線通信装置７ａ〜７ｃに対し、ホ
ッピングシーケンス及びホッピングタイミングについて
所定のネゴシエーションを行う。In this case, when data is transmitted, the first to third wireless communication devices 4a to 4c hop to the respective wireless communication devices 7a to 7c of the second station 2 as transmission destinations. A predetermined negotiation is performed on the sequence and the hopping timing.
【００２１】すなわち、第２の局２の第１の無線通信装
置７ａは、第１の局１の第１の無線通信装置４ａのホッ
ピングシーケンス及びホッピングタイミングに対応させ
て通信を行い、同様に、第２の局２の第２の無線通信装
置７ｂは、第１の局１の第２の無線通信装置４ｂのホッ
ピングシーケンス及びホッピングタイミングに対応させ
て通信を行い、第２の局２の第３の無線通信装置７ｃ
は、第１の局１の第３の無線通信装置４ｃのホッピング
シーケンス及びホッピングタイミングに対応させて通信
を行う。That is, the first wireless communication device 7a of the second station 2 performs communication in accordance with the hopping sequence and the hopping timing of the first wireless communication device 4a of the first station 1, and similarly, The second wireless communication device 7b of the second station 2 performs communication in accordance with the hopping sequence and the hopping timing of the second wireless communication device 4b of the first station 1, and the third wireless communication device 7b of the second station 2 Wireless communication device 7c
Performs communication in accordance with the hopping sequence and hopping timing of the third wireless communication device 4c of the first station 1.
【００２２】尚、本実施の形態では、送信側である第１
の局１の第１〜第３の無線通信装置４ａ〜４ｃの有する
ホッピングシーケンス及びホッピングタイミングに対応
させて受信側である第２の局２の第１〜第３の無線通信
装置７ａ〜７ｃにデータ伝送を行っているが、第２の局
２の第１〜第３の無線通信装置７ａ〜７ｃの有するホッ
ピングシーケンス及びホッピングタイミングに対応させ
てデータ伝送行うようにしてもよい。In the present embodiment, the first transmitting side
The first to third wireless communication devices 7a to 7c of the second station 2 on the receiving side are made to correspond to the hopping sequences and hopping timings of the first to third wireless communication devices 4a to 4c of the first station 1. Although data transmission is performed, data transmission may be performed in accordance with the hopping sequence and hopping timing of the first to third wireless communication devices 7a to 7c of the second station 2.
【００２３】このようにして第１の局１では送信データ
をデータ分割・複合変換器３でシリアルーパラレル変換
して、第１〜第３の無線通信装置４ａ〜４ｃに振り分
け、第１及び第３の無線通信装置４ａ〜４ｃの有するホ
ッピングシーケンスを使用して、第２の局２の第１〜第
３の無線通信装置７ａ〜７ｃに多重化伝送する。As described above, in the first station 1, the transmission data is subjected to serial-parallel conversion by the data division / composite converter 3, and distributed to the first to third radio communication devices 4a to 4c. The multiplexing transmission is performed to the first to third wireless communication devices 7a to 7c of the second station 2 using the hopping sequence of the three wireless communication devices 4a to 4c.
【００２４】一方、第２の局２では、第１〜第３の無線
通信装置７ａ〜７ｃが受信したデータをデータ分割・複
合変換器８でパラレルーシリアル変換し、受信したデー
タを送信データと同じ順番に並べ替えることにより、元
のシリアルデータに復調する。On the other hand, in the second station 2, the data received by the first to third wireless communication devices 7a to 7c are subjected to parallel-serial conversion by the data division / complex converter 8, and the received data is converted into transmission data. By rearranging in the same order, demodulation is performed to the original serial data.
【００２５】そして、第１〜第３の無線通信装置４ａ〜
４ｃが有するホッピングシーケンスは上述の如く夫々異
なるため、各通信チャンネル間の干渉が起きる確率は少
なく、通信速度は、各無線通信装置４ａ〜４ｃの有する
速度の複数倍の通信速度を実現することができる。The first to third radio communication devices 4a to 4a
Since the hopping sequences of the communication channels 4c are different from each other as described above, the probability of occurrence of interference between the communication channels is low, and the communication speed can be a multiple of the communication speed of each of the wireless communication devices 4a to 4c. it can.
【００２６】また、本実施の形態では、１パケットを１
タイムスロットでタイムスロット毎に交互に送信・受信
を行っているが、第１の局１から第２の局２へは１パケ
ットを複数のタイムスロットを用いて伝送し、第２の局
２から第１の局１へは１パケットを１タイムスロットを
用いて伝送する所謂非対称伝送方式としてもよい。In the present embodiment, one packet is one packet.
Although transmission and reception are performed alternately for each time slot in the time slot, one packet is transmitted from the first station 1 to the second station 2 using a plurality of time slots, and A so-called asymmetric transmission system in which one packet is transmitted to the first station 1 using one time slot may be used.
【００２７】この場合は、第１の局１から第２の局２へ
の伝送は、１パケットを複数のタイムスロットを用いて
伝送しているため、先の実施の形態に比べ、より高速で
もって無線伝送を行うことができる。In this case, the transmission from the first station 1 to the second station 2 is faster than the previous embodiment because one packet is transmitted using a plurality of time slots. Thus, wireless transmission can be performed.
【００２８】尚、本発明は上記実施の形態に限定される
ものではなく、本発明の要旨を逸脱しない範囲において
種々の変更が可能である。It should be noted that the present invention is not limited to the above embodiment, and various changes can be made without departing from the gist of the present invention.
【００２９】例えば、本実施の形態は、第１及び第２の
局１、２が夫々３つの無線通信装置４ａ〜４ｃ、７ａ〜
７ｃを備えているが、同時に通信可能なホッピングシー
ケンスの存在数以下で有れば各局が３つ以上の無線通信
装置を有する場合にも適用できるのはいうまでもない。For example, in the present embodiment, the first and second stations 1 and 2 each have three wireless communication devices 4a to 4c and 7a to
7c, but it goes without saying that the present invention can be applied to the case where each station has three or more wireless communication devices as long as the number of hopping sequences that can be simultaneously communicated is less than or equal to the number.
【００３０】また、上記実施の形態では、各無線通信装
置４ａ〜４ｃ、７ａ〜７ｃ毎に夫々アンテナ５ａ〜５
ｃ、６ａ〜６ｃを有しているが、各局が１つのアンテナ
で第１及び第２の局間での電波の送受信を行うようにし
てもよい。In the above embodiment, the antennas 5a to 5c are provided for each of the radio communication devices 4a to 4c and 7a to 7c.
c, 6a to 6c, but each station may transmit and receive radio waves between the first and second stations with one antenna.
【００３１】[0031]
【発明の効果】以上詳述したように本発明によれば、送
信データを複数の無線通信装置に分配し多重化して伝送
することにより、分割されたデータ列を略同時に伝送す
ることができ、高速の無線伝送が可能となる。As described above in detail, according to the present invention, divided data strings can be transmitted substantially simultaneously by distributing transmission data to a plurality of radio communication devices, multiplexing and transmitting them. High-speed wireless transmission becomes possible.
【００３２】また、送信側と受信側とで通信速度を異な
らせることにより、送信側からのデータ伝送をより高速
でもって行うことが可能となる。By making the transmission speed different between the transmission side and the reception side, data transmission from the transmission side can be performed at a higher speed.
【００３３】そして、これらの高速伝送はブルーツース
規格に準拠したスペクトラム拡散通信方式の周波数ホッ
ピング方式を使用することにより容易且つ低コストでも
って実現することができる。These high-speed transmissions can be realized easily and at low cost by using a frequency hopping system of a spread spectrum communication system conforming to the Bluetooth standard.
【図１】本発明に係る無線通信システムの一実施の形態
を示すシステム構成図である。FIG. 1 is a system configuration diagram showing one embodiment of a wireless communication system according to the present invention.
３ データ分割・複合変換器（分割手段） ４ａ〜４ｃ 第１〜第３の無線通信装置（送信手段） ７ａ〜７ｃ 第１〜第３の無線通信装置（受信手段） ８ データ分割・複合変換器（複合手段） Reference Signs List 3 Data division / composite converter (division means) 4a to 4c First to third wireless communication devices (transmission means) 7a to 7c First to third wireless communication devices (reception means) 8 Data division / composite converter (Composite means)
Claims (10)
分割手段と、該分割されたデータ列を多重化して送信す
る送信手段と、多重化して送信されてきたデータ列を受
信する受信手段と、該受信手段により受信したデータ列
を複合する複合手段とを備えていることを特徴とする無
線通信システム。1. Dividing means for dividing transmission data into a plurality of data strings, transmitting means for multiplexing and transmitting the divided data strings, and receiving means for receiving the multiplexed and transmitted data strings. And a combining means for combining the data sequence received by the receiving means.
複数の無線通信装置を備え、データ送信時には前記分割
手段により分割された各データ列が分配されて複数の無
線通信装置に供給されると共に、データ受信時には多重
化して送信されてきた各データ列が前記複数の無線通信
装置に受信されることを特徴とする請求項１記載の無線
通信システム。2. A wireless communication apparatus comprising: a plurality of wireless communication devices each having the transmitting means and the receiving means; and at the time of data transmission, each data sequence divided by the dividing means is distributed and supplied to the plurality of wireless communication devices. 2. The wireless communication system according to claim 1, wherein, at the time of data reception, each of the multiplexed and transmitted data strings is received by the plurality of wireless communication devices.
ータ受信時とで通信速度が異なることを特徴とする請求
項２記載の無線通信システム。3. The wireless communication system according to claim 2, wherein said wireless communication device has a different communication speed between data transmission and data reception.
と共に、前記複数の無線通信装置は異なるホッピングシ
ーケンスを有していることを特徴とする請求項２又は請
求項３記載の無線通信システム。4. The wireless communication system according to claim 2, wherein the wireless communication is performed by a frequency hopping method, and the plurality of wireless communication devices have different hopping sequences.
ース規格に準拠していることを特徴とする請求項４記載
の無線通信システム。5. The wireless communication system according to claim 4, wherein said frequency hopping method conforms to a Bluetooth standard.
データ列に分割した後、該データ列を多重化して送信
し、データ受信時には多重化して送信されてきたデータ
列を受信した後、該データ列を複合することを特徴とす
る無線通信システムにおける通信方法。6. When transmitting data, the transmission data is divided into a plurality of data strings, and then the data strings are multiplexed and transmitted. When receiving the data, the multiplexed data strings are received and then transmitted. A communication method in a wireless communication system, comprising combining columns.
複数の無線通信装置を備え、データ送信時には前記分割
された各データ列を分配して前記複数の無線通信装置に
供給し、データ受信時には多重化して送信されてきた各
データ列を前記複数の無線通信装置が受信することを特
徴とする請求項６記載の無線通信システムにおける通信
方法。7. A plurality of wireless communication devices having the transmitting means and the receiving means, wherein each of the divided data strings is distributed and supplied to the plurality of wireless communication devices at the time of data transmission, and multiplexed at the time of data reception. 7. The communication method in a wireless communication system according to claim 6, wherein each of the plurality of wireless communication devices receives each data string transmitted in a form of a plurality of data.
ータ受信時とで通信速度が異なることを特徴とする請求
項７記載の無線通信システムにおける通信方法。8. The communication method in a wireless communication system according to claim 7, wherein said wireless communication device has a different communication speed between data transmission and data reception.
と共に、前記複数の無線通信装置が異なるホッピングシ
ーケンスを有し、該異なるホッピングシーケンスを使用
して前記分割されたデータ列を多重化し、無線通信を行
うことを特徴とする請求項７又は請求項８記載の無線通
信システムにおける通信方法。9. Performing wireless communication by a frequency hopping method, wherein the plurality of wireless communication devices have different hopping sequences, and multiplex the divided data sequences using the different hopping sequences to perform wireless communication. The communication method in a wireless communication system according to claim 7 or 8, wherein the communication method is performed.
ツース規格に準拠していることを特徴とする請求項９記
載の無線通信システムにおける通信方法。10. The communication method according to claim 9, wherein the frequency hopping method conforms to a Bluetooth standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000387311A JP2002191073A (en) | 2000-12-20 | 2000-12-20 | Wireless communication system, and communication method in the wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000387311A JP2002191073A (en) | 2000-12-20 | 2000-12-20 | Wireless communication system, and communication method in the wireless communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002191073A true JP2002191073A (en) | 2002-07-05 |
Family
ID=18854271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000387311A Pending JP2002191073A (en) | 2000-12-20 | 2000-12-20 | Wireless communication system, and communication method in the wireless communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002191073A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7706380B2 (en) | 2004-07-07 | 2010-04-27 | Mitsubishi Denki Kabushiki Kaisha | Data transmission method, data transmission apparatus and data transmission system using this method |
| WO2010073474A1 (en) | 2008-12-24 | 2010-07-01 | 日本電気株式会社 | Communications system |
| US8027400B2 (en) | 2003-12-24 | 2011-09-27 | Nec Corporation | Wireless communication system, wireless communication apparatus, and resource assignment method used therein |
| JP2014138389A (en) * | 2013-01-18 | 2014-07-28 | Canon Inc | Transmitter, receiver, information processing system, control method and communication method |
| US9401736B2 (en) | 2012-09-21 | 2016-07-26 | Mitsubishi Electric Corporation | Radio communication apparatus, radio communication system, and radio communication method |
| US10263819B2 (en) | 2017-04-28 | 2019-04-16 | Renesas Electronics Corporation | Radio transmitting apparatus, radio receiving apparatus, and radio transmitting method |
-
2000
- 2000-12-20 JP JP2000387311A patent/JP2002191073A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8027400B2 (en) | 2003-12-24 | 2011-09-27 | Nec Corporation | Wireless communication system, wireless communication apparatus, and resource assignment method used therein |
| JP4780298B2 (en) * | 2003-12-24 | 2011-09-28 | 日本電気株式会社 | Wireless communication system, wireless communication apparatus, and resource allocation method used therefor |
| US7706380B2 (en) | 2004-07-07 | 2010-04-27 | Mitsubishi Denki Kabushiki Kaisha | Data transmission method, data transmission apparatus and data transmission system using this method |
| WO2010073474A1 (en) | 2008-12-24 | 2010-07-01 | 日本電気株式会社 | Communications system |
| CN102265688A (en) * | 2008-12-24 | 2011-11-30 | 日本电气株式会社 | Communications system |
| RU2468540C1 (en) * | 2008-12-24 | 2012-11-27 | Нек Корпорейшн | Communication system |
| CN102265688B (en) * | 2008-12-24 | 2014-08-20 | 日本电气株式会社 | Communications system |
| US9014188B2 (en) | 2008-12-24 | 2015-04-21 | Nec Corporation | Communication system |
| US9401736B2 (en) | 2012-09-21 | 2016-07-26 | Mitsubishi Electric Corporation | Radio communication apparatus, radio communication system, and radio communication method |
| JP2014138389A (en) * | 2013-01-18 | 2014-07-28 | Canon Inc | Transmitter, receiver, information processing system, control method and communication method |
| US10263819B2 (en) | 2017-04-28 | 2019-04-16 | Renesas Electronics Corporation | Radio transmitting apparatus, radio receiving apparatus, and radio transmitting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10117201B2 (en) | Method and apparatus of enabling multi band transmission | |
| JP3444114B2 (en) | Communication method, base station and terminal device | |
| JP4658959B2 (en) | Communication method and wireless transmitter | |
| US8279895B2 (en) | Efficient channel architectures for multi-channel MAC protocols in wireless ad hoc networks | |
| JP2001358692A (en) | Orthogonal frequency-division multiplex modulating and demodulating circuit | |
| CN101136811A (en) | OFDM transmission signal processing equipment, method and radio frequency far-end unit | |
| CN112715047A (en) | Communication apparatus and communication method for channel estimation | |
| KR100591752B1 (en) | Wireless communication system having a plurality of independent transmission channels | |
| JP2002335204A (en) | Method for communication between base stations | |
| JP2002191073A (en) | Wireless communication system, and communication method in the wireless communication system | |
| JPH08340279A (en) | Spread spectrum communication method and equipment therefor | |
| JP2002223479A (en) | Wireless data communication system, base station, mobile station and program | |
| CN1701522A (en) | Radio communication device compatible with multi-frequency band | |
| JP2005286508A (en) | Wireless communication system, and transmitter, receiver and transmitter-receiver used in this system | |
| CN101431366B (en) | Data transmission method of TDD system | |
| JP2006109255A (en) | Multi-antenna fully duplex radio equipment, and communication method thereof | |
| KR20190112539A (en) | Distributed unit device, data stream delivery method, data stream conversion device | |
| JP3683242B2 (en) | Communication method and communication system | |
| JP2005175912A (en) | Cell type radio communication system, cell type radio communication method, and rake reception method | |
| JP2022173323A (en) | Communication device and communication method | |
| JP2009118137A (en) | Radio terminal and method for processing transmission signal and method for processing receiving signal | |
| CN106936512A (en) | Optical signal transmitter and light signal receiving and optical fiber telecommunications system | |
| JPH088783A (en) | Radio communication equipment and method therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20060405 |
|
| RD05 | Notification of revocation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7425 Effective date: 20070626 |