JP3106390B2 - Wireless communication method - Google Patents
Wireless communication methodInfo
- Publication number
- JP3106390B2 JP3106390B2 JP24517095A JP24517095A JP3106390B2 JP 3106390 B2 JP3106390 B2 JP 3106390B2 JP 24517095 A JP24517095 A JP 24517095A JP 24517095 A JP24517095 A JP 24517095A JP 3106390 B2 JP3106390 B2 JP 3106390B2
- Authority
- JP
- Japan
- Prior art keywords
- wireless communication
- cell
- communication method
- communication system
- channel
- 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 - Lifetime
Links
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- Mobile Radio Communication Systems (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は移動通信における無
線通信方式に関し、特に、移動通信において異なる無線
通信方式が同時に存在する場合、高速無線通信システム
のセル内トラヒックが多く通信チャネルが輻輳している
場合、低速の無線通信システムを用いて通信を開始する
ことにより、呼損を少なくする技術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication system in mobile communication, and in particular, when different radio communication systems exist simultaneously in mobile communication, a high-speed radio communication system has a lot of intra-cell traffic and a communication channel is congested. In this case, the present invention relates to a technique for reducing a call loss by starting communication using a low-speed wireless communication system.
【０００２】[0002]
【従来の技術】移動通信可能な無線局である端末と、所
要の通信品質が得られると予測される範囲即ち、セルと
呼ばれるゾーンがある地域で連続するようにそのセルを
構成する基地局を置局する第１の無線通信方式１と、そ
の無線通信方式１と比べて伝送速度が高速であるがセル
の大きさが小さくそのセルが上記地域の一部を覆うよう
に置局を行う第２の無線通信方式２が併存する場合、従
来は図４に示すように、２つの方式が互いのトラヒック
量に無関係であったため、一方の無線通信システムが輻
輳しもう一方の無線通信システムのチャネルが空いてい
ても、輻輳している無線通信システムを用いた通信を行
おうとすると呼損となった。なお、図４で１００は方式
２の基地局、１０１は方式２の端末、１０２は方式２の
セル、１１０は方式１の基地局、１１１は方式１の端
末、１１２は方式１のセルを示す。2. Description of the Related Art A terminal which is a mobile station capable of mobile communication and a base station which constitutes a cell in a range where a required communication quality is expected to be obtained, that is, a cell called a zone so as to be continuous in a certain area. A first wireless communication system 1 to be installed and a second wireless communication system 1 in which the transmission speed is higher than that of the wireless communication system 1 but the cell size is small and the cell covers a part of the area. In the case where two wireless communication systems 2 coexist, as shown in FIG. 4, the two systems are irrelevant to each other's traffic volume, so that one wireless communication system becomes congested and the channel of the other wireless communication system becomes congested. Even if is available, a call is lost when trying to perform communication using a congested wireless communication system. In FIG. 4, reference numeral 100 denotes a base station of scheme 2, 101 denotes a terminal of scheme 2, 102 denotes a cell of scheme 2, 110 denotes a base station of scheme 1, 111 denotes a terminal of scheme 1, and 112 denotes a cell of scheme 1. .
【０００３】[0003]
【発明が解決しようとする課題】従来はこのように通
常、異なる無線通信システムが同時に存在する場合、互
いのトラヒック量に無関係であったため、輻輳している
無線通信システムにさらに負荷がかかると呼損となると
いう課題があった。また、空きチャネルがあいていても
すぐに使わないことがあり、周波数有効利用が低下し
た。Conventionally, when different wireless communication systems are simultaneously present as described above, it is generally considered that a congested wireless communication system is further loaded because it is independent of the traffic volume of each other. There was a problem that it became a loss. In addition, even if there is an available channel, it may not be used immediately, and the effective frequency utilization is reduced.
【０００４】本発明は上記問題点を改善するもので、２
つの無線通信方式が重複して存在する場合に呼損を少な
くすることを目的とする。The present invention has been made to solve the above problems, and has two problems.
An object of the present invention is to reduce call loss when two wireless communication systems are present in an overlapping manner.
【０００５】[0005]
【課題を解決するための手段】本発明は、第２の無線通
信方式２の端末２が発呼した時、第２の無線通信方式２
のセル内に空きチャネルがない場合に、第１の無線通信
方式１の空きチャネルを用いて第２の無線通信方式２の
呼の情報を伝送する。その後、第１の無線通信方式によ
り通信を開始する。According to the present invention, when a terminal 2 of the second wireless communication system 2 originates a call, the second wireless communication system 2
When there is no empty channel in the cell of the second wireless communication system 1, the information of the call of the second wireless communication system 2 is transmitted using the empty channel of the first wireless communication system 1. Thereafter, communication is started by the first wireless communication method.
【０００６】第１の無線通信方式１の空きチャネルを用
いて第２の無線通信方式２の呼の情報を伝送する場合、
通信中に第２の無線通信方式２のセル内に空きチャネル
が発生した場合は第２の無線通信方式２へ切り替え通信
を続ける。[0006] When transmitting call information of the second wireless communication system 2 using an empty channel of the first wireless communication system 1,
If an empty channel occurs in a cell of the second wireless communication method 2 during communication, the communication is switched to the second wireless communication method 2 and communication is continued.
【０００７】本発明では、第２の無線通信方式２の空き
チャネルがない場合、異なる第１の無線通信方式１を使
用し通信を行うことにより、第２の無線通信方式２の輻
輳時に発生する呼損を少なくすることができる。また、
空きチャネルが生じた場合、すぐに予約呼にそのチャネ
ルを割り当てるため、チャネルのアイドル時間が減少
し、周波数利用効率の向上を図ることができる。According to the present invention, when there is no available channel in the second wireless communication system 2, communication is performed using a different first wireless communication system 1, thereby causing a problem when the second wireless communication system 2 is congested. The call loss can be reduced. Also,
When a vacant channel occurs, the channel is immediately allocated to the reserved call, so that the idle time of the channel is reduced and the frequency utilization efficiency can be improved.
【０００８】[0008]
【発明の実施の形態】図１は本発明の概要を説明する図
である。端末１０１と基地局１００は第２の無線通信方
式２に対応する端末及び基地局であり、端末１１１と基
地局１１０は第１の無線通信方式１に対応する端末及び
基地局である。また、大セル１１２は第１の無線通信方
式１が構成するセルであり、小セル１０２は第２の無線
通信方式２が構成するセルである。小セル１０２はとび
とびに存在する。第２の無線通信方式２の端末２は第１
の無線通信方式１の端末１と少なくとも制御情報の通信
機能を持つ。FIG. 1 is a diagram for explaining the outline of the present invention. The terminal 101 and the base station 100 are a terminal and a base station corresponding to the second wireless communication scheme 2, and the terminal 111 and the base station 110 are a terminal and a base station corresponding to the first wireless communication scheme 1. The large cell 112 is a cell configured by the first wireless communication system 1, and the small cell 102 is a cell configured by the second wireless communication system 2. The small cells 102 exist discretely. The terminal 2 of the second wireless communication system 2 is the first
And at least a communication function of control information with the terminal 1 of the wireless communication system 1.
【０００９】図２は本発明の実施例を示すフローチャー
トである。本発明は、第２の無線通信方式２の端末２が
発呼した場合（２００）、セル内に空きチャネルが存在
すれば第２の無線通信方式２を用いて通信を開始する
（２０７、２０８）。一方、セル内に空きチャネルがな
い場合、第１の無線通信方式１を用いて通信をはじめる
かどうかを端末２から選択し（２０２）、第１の無線通
信方式１を用いて通信を希望し、第１の無線通信方式１
のセル内に空きチャネルがあれば、第１の無線通信方式
１のチャネルを使用して通信を行う（２０４、２０
５）。また、第１の無線通信方式１を用いた通信を希望
しない場合及び第１の無線通信方式１のセル内に空きチ
ャネルがない場合は、呼損とする（２０６）。FIG. 2 is a flowchart showing an embodiment of the present invention. According to the present invention, when a terminal 2 of the second wireless communication system 2 makes a call (200), communication is started using the second wireless communication system 2 if an empty channel exists in the cell (207, 208). ). On the other hand, if there is no free channel in the cell, the terminal 2 selects whether or not to start communication using the first wireless communication method 1 (202), and desires communication using the first wireless communication method 1. , First wireless communication system 1
If there is a vacant channel in the cell of No. 1, communication is performed using the channel of the first wireless communication system 1 (204, 20).
5). If communication using the first wireless communication method 1 is not desired, or if there is no free channel in a cell of the first wireless communication method 1, it is determined as a call loss (206).
【００１０】図３は本発明の実施例を示すフローチャー
トである。第２の無線通信方式２のセル内に空きチャネ
ルがなく、第１の無線通信方式１を用いて通信を行う場
合、第２の無線通信方式２に通信チャネルの予約を行
う。第１の無線通信方式１を用いた通信の開始後、第２
の無線通信方式２に空きチャネルが発生した場合、第１
の無線通信方式１による通信を中断（３１０）して第２
の無線通信方式２へ切り替え第２の無線通信方式２によ
る通信を開始し（３１１、３１２）、第１の無線通信方
式１のチャネルは開放する。FIG. 3 is a flowchart showing an embodiment of the present invention. When there is no free channel in the cell of the second wireless communication method 2 and communication is performed using the first wireless communication method 1, a communication channel is reserved for the second wireless communication method 2. After the start of communication using the first wireless communication method 1, the second
When an empty channel occurs in the wireless communication system 2 of
The communication by the wireless communication method 1 is interrupted (310) and the second
Then, communication with the second wireless communication system 2 is started (311 and 312), and the channel of the first wireless communication system 1 is released.
【００１１】[0011]
【発明の効果】異なる無線通信方式が同時に存在した場
合、従来の方式では、一方の無線通信方式が輻輳してさ
らに発呼がある場合は呼損となった。本発明によると、
第１の無線通信方式１を用いて通信を開始することによ
り、呼損を少なくすることができる。According to the conventional method, when different wireless communication systems exist at the same time, if one of the wireless communication systems is congested and there is a further call, the call is lost. According to the present invention,
By starting communication using the first wireless communication method 1, call loss can be reduced.
【図１】本発明の概要を説明する図である。FIG. 1 is a diagram illustrating an outline of the present invention.
【図２】本発明の実施例である。FIG. 2 is an embodiment of the present invention.
【図３】本発明の実施例である。FIG. 3 is an embodiment of the present invention.
【図４】従来のシステム概念を説明する図である。FIG. 4 is a diagram illustrating a conventional system concept.
１００ 無線通信方式２の基地局２ １０１ 無線通信方式２の端末２ １０２ 無線通信方式２のセル １１０ 無線通信方式１の基地局１ １１１ 無線通信方式１の端末１ １１２ 無線通信方式１のセル Reference Signs List 100 base station 2 of wireless communication system 2 101 terminal 2 of wireless communication system 2 102 cell of wireless communication system 110 base station 1 of wireless communication system 1 111 terminal 1 of wireless communication system 1 112 cell of wireless communication system 1
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H04B 7/26 H04Q 7/00 - 7/38 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) H04B 7/26 H04Q 7 /00-7/38
Claims (2)
通信品質が得られると予測される範囲即ち、セルと呼ば
れるゾーンがある地域で連続するようにそのセルを構成
する基地局を置局する第１の無線通信方式と、その第１
の無線通信方式と比べて伝送速度が高速であるがセルの
大きさが小さくそのセルが上記地域の一部を覆うように
置局を行う第２の無線通信方式を具備する無線通信方法
において、 高速な伝送を希望する端末が通信を行う際に、第２の無
線通信方式のセル内に空きチャネルがある場合は第２の
無線通信方式を用いた高速通信を開始し、空きチャネル
がない場合は、第１の無線通信方式を用いて通信を開始
することを特徴とする無線通信方法。1. A mobile station, which is a mobile station, and a base station which constitutes a cell in a range in which a required communication quality is expected to be obtained, that is, a cell called a zone is continuously arranged in a certain area. The first wireless communication system to be
A wireless communication method having a second wireless communication method in which the transmission rate is higher than that of the wireless communication method but the cell size is small and the cell is stationed so as to cover a part of the area, When a terminal desiring high-speed transmission performs communication, if there is an empty channel in the cell of the second wireless communication method, high-speed communication using the second wireless communication method is started. Comprises: starting communication using a first wireless communication method.
際に、第２の無線通信方式のセル内に空きチャネルがあ
る場合は第２の無線通信方式を用いた高速通信を開始
し、空きチャネルがなく第１の無線通信方式には空きチ
ャネルがある場合は、第１の無線通信方式を用いて通信
を開始し、第２の無線通信方式に通信の予約を行ってお
き、空きチャネルが生じた時に第１の無線通信方式によ
る通信を中断して第２の無線通信方式を用いて通信を開
始することを特徴とする請求項１記載の無線通信方法。2. When a terminal desiring high-speed transmission performs communication, if there is an empty channel in a cell of the second wireless communication method, high-speed communication using the second wireless communication method is started, If there is no free channel and the first wireless communication system has a free channel, communication is started using the first wireless communication system, and communication reservation is made for the second wireless communication system. 2. The wireless communication method according to claim 1, wherein when the communication occurs, the communication using the first wireless communication method is interrupted and the communication is started using the second wireless communication method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24517095A JP3106390B2 (en) | 1995-08-31 | 1995-08-31 | Wireless communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24517095A JP3106390B2 (en) | 1995-08-31 | 1995-08-31 | Wireless communication method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0970066A JPH0970066A (en) | 1997-03-11 |
| JP3106390B2 true JP3106390B2 (en) | 2000-11-06 |
Family
ID=17129656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24517095A Expired - Lifetime JP3106390B2 (en) | 1995-08-31 | 1995-08-31 | Wireless communication method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3106390B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5150434B2 (en) * | 2008-09-25 | 2013-02-20 | 株式会社東芝 | Mobile station, communication method and communication program |
| JP6212848B2 (en) * | 2012-10-02 | 2017-10-18 | 日本電気株式会社 | Mobile station, communication system, communication method switching method, and communication method switching program |
-
1995
- 1995-08-31 JP JP24517095A patent/JP3106390B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0970066A (en) | 1997-03-11 |
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