JPH0970061A - Radio communication method - Google Patents
Radio communication methodInfo
- Publication number
- JPH0970061A JPH0970061A JP7247026A JP24702695A JPH0970061A JP H0970061 A JPH0970061 A JP H0970061A JP 7247026 A JP7247026 A JP 7247026A JP 24702695 A JP24702695 A JP 24702695A JP H0970061 A JPH0970061 A JP H0970061A
- Authority
- JP
- Japan
- Prior art keywords
- wireless communication
- channel
- communication method
- terminal
- base 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.)
- Granted
Links
Abstract
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
線通信方法に関し、特に、移動通信において大セルと小
セルの異なる無線通信方式が同時に存在する場合に、セ
ルの大きさが大きい無線通信システムを用いてセルの大
きさが小さい無線通信システムの通信チャネルを予約す
ることにより、小セルの圏外にある端末に対して小セル
セル内に移動した時に直ちに通信可能にすることに有効
な無線通信方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication method in mobile communication, and more particularly to a wireless communication system having a large cell size when there are different wireless communication systems for large cells and small cells at the same time in mobile communication. The present invention relates to a wireless communication method effective for enabling a terminal outside the area of a small cell to immediately communicate with the terminal outside the area of the small cell by reserving a communication channel of a wireless communication system having a small cell size .
【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、第
１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５に示すように、セルの大きさが小さい無線通
信システムに対しては信号の捕捉可能なエリアが狭いた
め、端末が捕捉可能なエリア内に移動した後に通信チャ
ネルの空き状況を知ることになる。このため通信可能性
について知るために移動局はまず捕捉可能なエリア内に
移動する必要があった。なお、図５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のセルである。2. Description of the Related Art A terminal which is a wireless station capable of mobile communication and a base station which configures a cell so that a zone called a cell where a required communication quality is expected to be obtained, that is, a zone, is continuous. The first wireless communication system 1 to place a station has a transmission speed higher than that of the first wireless communication system 1, but the size of the cell is small and the station is placed so that the cell covers a part of the above area. When the second wireless communication method 2 to be performed coexists,
Conventionally, as shown in FIG. 5, since a signal capture area is narrow for a wireless communication system having a small cell size, a terminal can know the availability of a communication channel after moving to an area where a signal can be captured. It will be. Therefore, in order to know the communication possibility, the mobile station first had to move within the area where it could be captured. In FIG. 5, 100 is method 2
Base station, 101 is a scheme 2 terminal, 102 is a scheme 2 cell, 110 is a scheme 1 base station, 111 is a scheme 1 terminal,
Reference numeral 112 is a cell of method 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、信号の捕捉可能な無線基地局が構成する無線セル内
にいない場合は、近くのセル内の通信チャネルの空き状
況はわからなかったため、通信要求時は常にセル内に移
動して信号の捕捉可能なエリアへ移動してから空きチャ
ネルを待つという問題があった。従って呼損が多くなる
と共に、呼の設定に時間がかかるという欠点があった。As described above, conventionally, when the wireless base station capable of capturing a signal does not normally exist in the wireless cell, the availability of the communication channel in the nearby cell is not known. There is a problem that when a communication request is made, the mobile station always moves into a cell and moves to an area where a signal can be captured, and then waits for an empty channel. Therefore, there are drawbacks that call loss increases and call setup takes time.
【０００４】本発明の目的は、大セルと小セルが重複し
て存在する場合に、移動局が小セルの圏外にいても、圏
内に移動すれば直ちに通信を開始できることを知ること
ができる無線通信方法を提供することにある。An object of the present invention is to make it possible to know that when a large cell and a small cell overlap, it is possible to immediately start communication if the mobile station moves out of the area of the small cell even if the mobile station is out of the area of the small cell. To provide a communication method.
【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の端末が圏外で発呼する場合、第１の無線通信
方式１を用いて第２の無線通信方式２の通信チャネルを
予約し、第１の無線通信方式１を介して端末へ通信チャ
ネルの予約可否を知らせる。即ち、第２の無線通信方式
２の端末が圏外の場合、第１の無線通信方式１の端末１
から基地局１へ無線通信方式の通信チャネル予約許可要
求信号を送信する。これを受信した基地局１は第２の無
線通信方式２の基地局２へこのことを知らせ、基地局２
は第２の無線通信方式２の通信チャネルの空きがあるか
どうかを調べる。第２の無線通信方式２の通信チャネル
の空きがある場合は、通信チャネルの予約を行う。第２
の無線通信方式２の通信チャネルの予約が済むと、その
ことを基地局１へ知らせ、第１の無線通信方式１を用い
て端末へ知らせる。端末２が圏内に移動した時、予約済
みの通信チャネルを用いて通信を開始する。また、端末
２が一定時間後にも圏外であれば予約をキャンセルす
る。According to the present invention, when a terminal of the second wireless communication system 2 makes a call outside the service area, a communication channel of the second wireless communication system 2 is used by using the first wireless communication system 1. , And informs the terminal through the first wireless communication system 1 whether the communication channel can be reserved. That is, when the terminal of the second wireless communication method 2 is out of the service area, the terminal 1 of the first wireless communication method 1
Transmits a communication channel reservation permission request signal of the wireless communication method from the base station 1 to the base station 1. Upon receiving this, the base station 1 informs the base station 2 of the second wireless communication system 2 of this fact, and the base station 2
Checks whether or not there is a free communication channel for the second wireless communication method 2. When there is a free communication channel of the second wireless communication method 2, the communication channel is reserved. Second
When the reservation of the communication channel of the wireless communication method 2 is completed, the fact is notified to the base station 1 and the terminal is notified using the first wireless communication method 1. When the terminal 2 moves into the area, communication is started using the reserved communication channel. Further, if the terminal 2 is out of the service area even after a fixed time, the reservation is canceled.
【０００６】第２の無線通信方式２のセル内に空きチャ
ネルがなくチャネル予約ができない場合、図２に示すよ
うに、通信チャネル予約待ち行列に登録し他の端末の通
信の終了により空きチャネルが発生するのを待つ。チャ
ネル予約待ち行列に順番として先頭でかつ空きチャネル
が発生した場合、通信チャネルを予約し、セル内に移動
するまで通信チャネルを確保する。第２の無線通信方式
２の通信チャネルを予約した後、そのことを第１の無線
通信方式１を用いて端末へ知らせる。端末２が圏内に移
動した時、予約済みの通信チャネルを用いて直ちに通信
を開始する。また、端末２が一定時間後にも圏外であれ
ば予約をキャンセルする。When there is no free channel in the cell of the second wireless communication system 2 and channel reservation is not possible, as shown in FIG. 2, it is registered in the communication channel reservation queue, and the empty channel becomes available due to the end of communication by another terminal. Wait for it to happen. When the channel reservation queue is the first in the sequence and an empty channel occurs, the communication channel is reserved and the communication channel is secured until the cell moves into the cell. After reserving the communication channel of the second wireless communication method 2, the fact is notified to the terminal using the first wireless communication method 1. When the terminal 2 moves into the area, it immediately starts communication using the reserved communication channel. Further, if the terminal 2 is out of the service area even after a fixed time, the reservation is canceled.
【０００７】チャネル予約待ち行列の順番が先頭でない
場合、他端末の通信終了により空きチャネルが発生した
時には、待ち行列の先頭の端末がチャネル予約を行った
後、待ち行列の待ち順番の順位を１つ上げる。When the order of the channel reservation queue is not first, and when an empty channel occurs due to the communication termination of another terminal, the first terminal in the queue makes a channel reservation and then the order of the waiting order of the queue is 1 Raise.
【０００８】本発明では、異なる第１の無線通信方式１
を用いて第２の無線通信方式２の通信チャネルを予約す
ることにより、第２の無線通信方式２のセル内に移動し
た場合、直ちに通信開始できるため、通信開始までの時
間を短くできる。また、予約できない場合は、通信チャ
ネル予約待ち行列に登録することにより、第２の無線通
信方式２による通信開始可能性についてセル外で知るこ
とができる。In the present invention, a different first wireless communication system 1
By reserving the communication channel of the second wireless communication system 2 by using, the communication can be started immediately when moving to the cell of the second wireless communication system 2, so that the time until the start of communication can be shortened. If reservation is not possible, the possibility of starting communication by the second wireless communication method 2 can be known outside the cell by registering in the communication channel reservation queue.
【０００９】[0009]
【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は不連
続に存在する。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へ制御情報の通信機能を持つ。
または、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の基地局１へ送信できる機能を持つ。さらに第
１の無線通信方式１の基地局１と第２の無線通信方式２
の基地局２は、第２の無線通信方式２の使用許可要求、
端末２の位置登録情報などの制御情報の通信ができる。
第１の無線通信方式１の送信機能を持つ第２の無線通信
方式２の端末２、または第１の無線通信方式１の端末１
を通じて第２の無線通信方式２の端末２からの発呼要求
に応じて、第１の無線通信方式１の基地局１は第２の無
線通信方式２の基地局２へ発呼信号を伝送することがで
きる。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram for explaining the outline of the present invention. The terminal 101 and the base station 100 are terminals and base stations compatible with the second wireless communication system 2, and the terminals 111 and base stations 110 are terminals and base stations compatible with the first wireless communication system 1. Further, the large cell 112 is a cell configured by the first wireless communication scheme 1, and the small cell 102 is a cell configured by the second wireless communication scheme 2. The small cells 102 exist discontinuously. The terminal 2 of the second wireless communication method 2 has a function of communicating control information with the terminal 1 of the first wireless communication method 1.
Alternatively, the terminal 2 of the second wireless communication system 2 has a function of transmitting to the base station 1 of the first wireless communication system 1. Further, the base station 1 of the first wireless communication system 1 and the second wireless communication system 2
Base station 2 of the second wireless communication method 2,
It is possible to communicate control information such as location registration information of the terminal 2.
The terminal 2 of the second wireless communication method 2 having the transmission function of the first wireless communication method 1 or the terminal 1 of the first wireless communication method 1
In response to a call request from the terminal 2 of the second wireless communication system 2, the base station 1 of the first wireless communication system 1 transmits a call signal to the base station 2 of the second wireless communication system 2. be able to.
【００１０】第１の無線通信方式１の基地局１は、その
構成するセル内にある第２の無線通信方式２の基地局２
のエリアマップを有し、第２の無線通信方式２に関する
制御情報を伝送した端末の位置から最も近い第２の無線
通信方式２の基地局２を知ることができる。The base station 1 of the first wireless communication system 1 is a base station 2 of the second wireless communication system 2 in the cell that constitutes the base station 1.
It is possible to know the base station 2 of the second wireless communication method 2 that is closest to the position of the terminal that has transmitted the control information regarding the second wireless communication method 2 by having the area map of.
【００１１】図３は本発明の実施例を示す動作フローチ
ャートである。本発明は、第２の無線通信方式２の端末
が圏外で発呼する場合（３０１）、第１の無線通信方式
１を用いて第１の無線通信方式１の端末１から基地局１
へ無線通信方式の通信チャネル予約許可要求信号を送信
する（３０２）。これを受信した（３０３）基地局１は
第２の無線通信方式２の基地局２へこのことを知らせ、
基地局２は第２の無線通信方式２の通信チャネルの空き
があるかどうかを調べる（３０４）。空きがなければ、
呼損となる（３０５）。第２の無線通信方式２の通信チ
ャネルの空きがある場合は、通信チャネルの予約を行う
（３０６）。第２の無線通信方式２の通信チャネルの予
約が済むと、そのことを基地局１へ知らせ、第１の無線
通信方式１を用いて端末へ知らせる（３０７）。端末２
が方式２のセルの圏内に移動した時、予約済みの通信チ
ャネルを用いて通信を開始する（３１３、３１４）。ま
た、端末２が一定時間後にも圏外であれば予約をキャン
セルする（３１２）。FIG. 3 is an operation flowchart showing an embodiment of the present invention. According to the present invention, when a terminal of the second wireless communication method 2 makes a call outside the service area (301), the first wireless communication method 1 is used to change from the terminal 1 of the first wireless communication method 1 to the base station 1.
A communication channel reservation permission request signal of the wireless communication system is transmitted to (302). Receiving this (303), the base station 1 informs the base station 2 of the second wireless communication system 2 of this,
The base station 2 checks whether there is a free communication channel of the second wireless communication method 2 (304). If there is no space,
The call is lost (305). If the communication channel of the second wireless communication method 2 is available, the communication channel is reserved (306). When the reservation of the communication channel of the second wireless communication method 2 is completed, the fact is notified to the base station 1 and the terminal is notified using the first wireless communication method 1 (307). Terminal 2
When the mobile terminal moves within the area of the method 2 cell, communication is started using the reserved communication channel (313, 314). If the terminal 2 is out of the service area even after a fixed time, the reservation is canceled (312).
【００１２】図４は本発明の実施例を示すフローチャー
トである。上記において第２の無線通信方式２の通信チ
ャネルの予約を行う際、第２の無線通信方式２のセル内
に空きチャネルがなくチャネル予約ができない場合（４
０４）、他の端末の通信が終了し空きチャネルが生じる
まで待つ（４０５）。この場合チャネル予約待ち行列に
登録する（４０５）。チャネル予約待ち行列に順番とし
て先頭でかつ空きチャネルが発生した場合、通信チャネ
ルを予約し、セル内に移動するまで通信チャネルを確保
する。第２の無線通信方式２の通信チャネルを予約した
後、そのことを基地局１へ知らせ、第１の無線通信方式
１を用いて端末へ知らせる。端末２が小セルの圏内に移
動した時、予約済みの通信チャネルを用いて通信を開始
する（４０９、４１０）。また、端末２が一定時間後に
も圏外であれば予約をキャンセルする（４１７）。FIG. 4 is a flow chart showing an embodiment of the present invention. In the above, when the communication channel of the second wireless communication method 2 is reserved, if there is no empty channel in the cell of the second wireless communication method 2 and the channel cannot be reserved (
04), and waits until communication of another terminal ends and a free channel occurs (405). In this case, it is registered in the channel reservation queue (405). When the channel reservation queue is the first in the sequence and an empty channel occurs, the communication channel is reserved and the communication channel is secured until the cell moves into the cell. After reserving the communication channel of the second wireless communication system 2, the base station 1 is informed of this, and the terminal is informed using the first wireless communication system 1. When the terminal 2 moves into the area of the small cell, communication is started using the reserved communication channel (409, 410). If the terminal 2 is out of the service area even after a fixed time, the reservation is canceled (417).
【００１３】チャネル予約待ち行列の順番が先頭でない
場合、他端末の通信終了により空きチャネルが発生した
時には、待ち行列の先頭の端末がチャネル予約を行った
後、待ち行列の待ち順番の順位を１つ上げる（４０
８）。When the order of the channel reservation queue is not first, and when an empty channel occurs due to the communication termination of another terminal, the first terminal in the queue makes a channel reservation and then the order of the waiting order of the queue is 1 Raise (40
8).
【００１４】[0014]
【発明の効果】従来の方式では、第２の無線通信方式２
の圏外では通信チャネルは確保することができなかっ
た。本発明によると、第１の無線通信方式１を用いるこ
とにより、圏内に移動して直ちに通信開始できるかどう
かを、圏外から知ることができる。According to the conventional method, the second wireless communication method 2 is used.
Communication channels could not be secured outside the service area. According to the present invention, by using the first wireless communication method 1, it is possible to know from outside the area whether or not the user can move into the area and immediately start communication.
【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】通信チャネル予約待ち行列への登録を示す。FIG. 2 shows registration on a communication channel reservation queue.
【図３】本発明の実施例を示す。FIG. 3 shows an embodiment of the present invention.
【図４】本発明の実施例を示す。FIG. 4 shows an embodiment of the present invention.
【図５】従来のシステム概念を説明する図である。FIG. 5 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 100 Base station 2 of wireless communication system 2 101 Terminal 2 of wireless communication system 2 102 Cell of wireless communication system 2 110 Base station 1 of wireless communication system 1 111 Terminal 1 of wireless communication system 1 112 Cell of wireless communication system 1
Claims (3)
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、第１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と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２の基地局２において第２の無線通信方式２
の端末２からの信号を捕捉することを試み、捕捉できれ
ば第２の無線通信方式２を用いた通信を開始し、 捕捉できなければ、第１の無線通信方式１を用いて、第
２の無線通信方式２のチャネル予約許可の要求信号を第
１の無線通信方式１の端末１から第１の無線通信方式１
の基地局１へ送信し、基地局１は第２の無線通信方式２
の基地局２へそのことをネットワークを介して通知し、
端末１が使用予定の第２の無線通信方式２の通信チャネ
ルの予約を行い、第１の無線通信方式１を用いて基地局
１から端末１へ予約許可信号を送信しチャネルの予約を
端末に知らせ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 that configures a cell so that a zone called a cell where a required communication quality is expected to be obtained, that is, a zone, is continuous in a certain area. The first wireless communication method 1 for locating and the transmission speed is higher than that of the first wireless communication method 1, but the cell size is small and the cell placement is performed so that the cell covers a part of the above area. In a wireless communication method including the second wireless communication method 2, when a terminal desiring high-speed transmission performs communication, the base station 2 of the second wireless communication method 2 uses the second wireless communication method 2
Attempts to capture the signal from the terminal 2 of the second wireless communication system, and if it can be captured, the communication using the second wireless communication system 2 is started, and if it cannot be captured, the first wireless communication system 1 is used and the second wireless communication system 1 is used. The channel reservation permission request signal of the communication method 2 is transmitted from the terminal 1 of the first wireless communication method 1 to the first wireless communication method 1
To the base station 1 of the second wireless communication system 2
Notify the base station 2 of
The terminal 1 reserves a communication channel of the second wireless communication method 2 to be used, and transmits a reservation permission signal from the base station 1 to the terminal 1 using the first wireless communication method 1 to reserve the channel to the terminal. A wireless communication method characterized by notifying.
通信チャネルの予約を行う際に、第２の無線通信方式２
の通信チャネルに空きチャネルがあれば予約を行い、空
きチャネルがなければ、空きチャネルが生じた時に通信
チャネルが確保できるようにチャネル予約待ち行列に登
録し、第１の無線通信方式１を用いてチャネル予約待ち
であることを前記端末１へ通知し、他端末が通信終了し
空きチャネルが生じた時に順番がチャネル待ち行列の先
頭であれば、第２の無線通信方式２の通信チャネルの予
約を行い、第１の無線通信方式１を用いて基地局１から
端末１へ予約許可信号を送信し予約を知らせることを特
徴とする請求項１記載の無線通信方法。2. The second wireless communication system 2 when the terminal 1 reserves a communication channel via the first wireless communication system 1.
If there is an empty channel in the communication channel, the reservation is made, and if there is no empty channel, it is registered in the channel reservation queue so that the communication channel can be secured when the empty channel occurs, and the first wireless communication method 1 is used. Notify the terminal 1 that it is waiting for channel reservation, and if the order is at the head of the channel queue when another terminal terminates communication and an empty channel occurs, reserve the communication channel of the second wireless communication method 2. The wireless communication method according to claim 1, wherein the reservation is notified by transmitting a reservation permission signal from the base station 1 to the terminal 1 using the first wireless communication method 1.
信が開始されなかった場合、その予約をキャンセルする
ことを特徴とする請求項１または２のいずれかに記載の
無線通信方法。3. The wireless communication method according to claim 1, wherein, after the reservation, if the reserved communication is not started within a predetermined time, the reservation is canceled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24702695A JP3421703B2 (en) | 1995-09-01 | 1995-09-01 | Wireless communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24702695A JP3421703B2 (en) | 1995-09-01 | 1995-09-01 | Wireless communication method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0970061A true JPH0970061A (en) | 1997-03-11 |
| JP3421703B2 JP3421703B2 (en) | 2003-06-30 |
Family
ID=17157307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24702695A Expired - Fee Related JP3421703B2 (en) | 1995-09-01 | 1995-09-01 | Wireless communication method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3421703B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015177357A (en) * | 2014-03-14 | 2015-10-05 | 京セラ株式会社 | Communication device, upper level device, communication system and communication control method |
-
1995
- 1995-09-01 JP JP24702695A patent/JP3421703B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015177357A (en) * | 2014-03-14 | 2015-10-05 | 京セラ株式会社 | Communication device, upper level device, communication system and communication control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3421703B2 (en) | 2003-06-30 |
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