JPH0440024A - Communication channel allocation method for mobile digital communication system - Google Patents
Communication channel allocation method for mobile digital communication systemInfo
- Publication number
- JPH0440024A JPH0440024A JP2147760A JP14776090A JPH0440024A JP H0440024 A JPH0440024 A JP H0440024A JP 2147760 A JP2147760 A JP 2147760A JP 14776090 A JP14776090 A JP 14776090A JP H0440024 A JPH0440024 A JP H0440024A
- Authority
- JP
- Japan
- Prior art keywords
- communication channel
- communication
- base station
- channel
- channel allocation
- 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
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、移動体デジタル通信システムの通信チャネ
ル割当方式に関し、特に移動体デジタル通信における多
元同時接続制御に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication channel allocation method for a mobile digital communication system, and particularly to multiple simultaneous connection control in mobile digital communication.
第３図（菊は従来のこの種の通信チャネル割当方式の一
例であり、図において、１は移動局より送信する上り制
御チャネル、２は基地局より送信する下り制御チャネル
であり、この制御チャネル１゜２は耐妨害性を考慮して
Ｓ Ｓ （Ｓｐｒｅａｄ Ｓｐｅｃｔｒｕｍ）通信によ
り伝送される。また、３は上りの通信チャネル、４は下
りの通信チャネルである。Figure 3 (Chrysanthemum) is an example of this type of conventional communication channel allocation method. In the figure, 1 is an uplink control channel transmitted from a mobile station, 2 is a downlink control channel transmitted from a base station, and this control channel 1.2 is transmitted by S S (spread spectrum) communication in consideration of interference resistance. 3 is an uplink communication channel, and 4 is a downlink communication channel.
第３図（ｂ）は従来の通信チャネル割当方式の他の一例
であり、５は基地局よりそのチャネルが空いていること
を通知するための空信号入り通信チャネルである。FIG. 3(b) shows another example of the conventional communication channel allocation method, and 5 is a communication channel containing an empty signal for notifying the base station that the channel is vacant.
次に、第３図（→を用いてその動作について説明する。Next, the operation will be explained using FIG. 3 (→).
移動局は、通信開始時、上り制御チャネル１を用いて基
地局に対し、通信チャネル割当を要求する。基地局は、
これを受は下り制御チャネル２で通信チャネルを通知す
る。以後、移動局と基地局で通信チャネル３．４を用い
て通信を行う。When starting communication, the mobile station uses uplink control channel 1 to request the base station to allocate a communication channel. The base station is
In response to this, the receiver notifies the communication channel on the downlink control channel 2. Thereafter, the mobile station and base station communicate using communication channel 3.4.
次に第３図ら）を用いて動作について説明する。Next, the operation will be explained using FIG. 3 et al.
基地局は、現在空いている通信チャネルを監視しており
、その空通信チャネルの下りチャネルに空信号を挿入し
、空信号入り下り通信チャネル５として送信する。The base station monitors currently vacant communication channels, inserts a vacant signal into the downlink channel of the vacant communication channel, and transmits it as the vacant signal-containing downlink communication channel 5.
移動局ではこれを認識し、その空信号入り通信チャネル
５とベアの上り通信チャネルでチャネル要求を送信する
。The mobile station recognizes this and transmits a channel request using the communication channel 5 containing the empty signal and the bare uplink communication channel.
以降、移動局と基地局は通信チャネル３．４を用いて通
信を行うと同時に、基地局では、別の空の下り通信チャ
ネルで空信号を送出する。Thereafter, the mobile station and the base station communicate using communication channel 3.4, and at the same time, the base station transmits an empty signal using another empty downlink communication channel.
従来の通信チャネル割当方式は、以上のように構成され
ているので、第３図（ａ）の方式では、基地局より移動
局に通信チャネルを割当てる際に、複数の移動局に対し
同時にチャネル割当ができない。Since the conventional communication channel allocation method is configured as described above, in the method shown in FIG. I can't.
また第３図Ｏ））の方式では、通信中の移動局に対し、
基地局より新たな制御項目を通達できない等の問題点が
あった。In addition, in the method shown in Figure 3 O)), for the mobile station in communication,
There were problems such as the base station not being able to notify new control items.
この発明は、上記のような問題点を解消するためになさ
れたもので、複数の移動局に対し同時に通信チャネル割
当ができると共に、割当後の通信中の移動局に対し、そ
の移動局に接続された別端末への着信や通信中移動局の
送信出力制御を通知できる通信チャネル割当方式を得る
ことを目的とする。This invention was made to solve the above-mentioned problems, and it is possible to allocate communication channels to multiple mobile stations at the same time, and after allocating communication channels, it is possible to connect to the mobile station that is currently communicating. The purpose of this invention is to obtain a communication channel allocation method that can notify the arrival of a call to another terminal and the transmission output control of a mobile station during communication.
この発明に係る移動体デジタル通信システムの通信チャ
ネル割当方式は、下り制御チャネルを報知情報エリアと
通信チャネル割当エリアとに分け、更に通信チャネル割
当エリアを複数個のスロットに分けるとともに、報知情
報エリアと通信チャネル割当エリアのペアを周期的に繰
返し伝送するようにしたものである。A communication channel allocation method for a mobile digital communication system according to the present invention divides a downlink control channel into a broadcast information area and a communication channel allocation area, further divides the communication channel allocation area into a plurality of slots, and divides the communication channel allocation area into a broadcast information area and a communication channel allocation area. Pairs of communication channel allocation areas are periodically and repeatedly transmitted.
また、基地局は移動局との距離に応じて発信順序制御を
通信チャネルスロットにより伝送するようにしたもので
ある。Further, the base station is configured to transmit transmission order control using communication channel slots depending on the distance from the mobile station.
この発明における通信チャネル割当方式は、複数のタイ
ムスロットに分かれた通信チャネル割当エリアを用いる
ことにより、同時に複数の移動局にチャネル割当てがで
きると共に、通信チャネルを割当てた移動局に対し、そ
の移動局が通信中に、他の制御項目を基地局により通知
することができる。The communication channel allocation method according to the present invention uses a communication channel allocation area divided into a plurality of time slots to simultaneously allocate a channel to a plurality of mobile stations. While the base station is communicating, other control items can be notified by the base station.
また、基地局は移動局との距離に応じて発信順序制御を
通信チャネルスロットにより伝送するので、ガードタイ
ムを広げることなく距離に応じた発信順序制御を通知す
ることができる。Furthermore, since the base station transmits the transmission order control according to the distance from the mobile station using the communication channel slot, it is possible to notify the transmission order control according to the distance without increasing the guard time.
以下、この発明の実施例を図について説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例による移動体デジタル通信シ
ステムの通信チャネル割当方式を示し、図において、１
０は時分割下り制御チャネル、６はフレーム同期エリア
、７は報知情報エリア、８は通信チャネル割当エリアで
ある。そしてこの時分割下り制御チャネル１０が、６．
７．８のエリアに区分され、エリア６．７．８で構成さ
れるｌブロックがｎ個で１周期となって繰り返し送信さ
れる。また、通信チャネル割当エリア８はさらに複数の
通信チャネルスロット９に分割される。FIG. 1 shows a communication channel allocation method for a mobile digital communication system according to an embodiment of the present invention.
0 is a time division downlink control channel, 6 is a frame synchronization area, 7 is a broadcast information area, and 8 is a communication channel allocation area. This time division downlink control channel 10 is 6.
The data is divided into 7.8 areas, and n l blocks each consisting of areas 6.7.8 are repeatedly transmitted in one cycle. Further, the communication channel allocation area 8 is further divided into a plurality of communication channel slots 9.
なお１は上り制御チャネル、３は上り通信チャネル、４
は下り通信チャネルである。Note that 1 is an uplink control channel, 3 is an uplink communication channel, and 4 is an uplink communication channel.
is the downstream communication channel.
次に動作について説明する。第１図において、移動局は
基地局に対し上り制御チャネル１でチャネル割当要求を
送出する。基地局は、これを受は時分割下り制御チャネ
ル１０の通信チャネル割当エリア８の中の通信チャネル
スロット９に、チャネル要求を送出した移動局番号と共
に割当通信チャネルを指示する。さらに他の移動局がチ
ャネル要求を送出すれば、残りの空通信チャネルスロッ
ト９を用いて通信チャネル指示を行う。Next, the operation will be explained. In FIG. 1, the mobile station sends a channel allocation request to the base station on uplink control channel 1. Upon receiving this, the base station designates the allocated communication channel to the communication channel slot 9 in the communication channel allocation area 8 of the time-division downlink control channel 10 along with the mobile station number that sent the channel request. If another mobile station sends a channel request, the remaining empty communication channel slot 9 is used to issue a communication channel instruction.
また現在通信中の移動局に連接される他の端末に着信が
あった場合、また基地局で上り通信チャネルの受信電界
強度をモニタしており、移動局が基地局の近傍で高出力
で送信している場合等は、その移動局にチャネル割当を
行ったタイムスロット９を用いて、着信通知、送信出力
低減等の制御を行う。In addition, if a call is received by another terminal connected to the mobile station currently communicating, the base station monitors the received field strength of the uplink communication channel, and the mobile station transmits at high output near the base station. In such a case, the time slot 9 to which the channel is assigned to the mobile station is used to control incoming call notification, transmission power reduction, etc.
また、上記実施例では、通信チャネル割当方式について
説明したが、移動局からの発信順序の決められた多元接
続において、現在移動局では、基地局との距離のばらつ
きを吸収するためのガードタイム１１をとって送信して
いるが、第２図に示すように基地局からのフレーム同期
６に合わせて移動局がチャネル要求を送出することによ
り、基地局で移動局との離隔距離を測定し、その距離に
応じた発信順序制御を通信チャネルスロット９により伝
送することにより、運用中の多元接続網に途中から移動
局が加入した場合にも、距離に応じた発信順序制御を行
うことにより、ガードタイム１１を広げることなく、多
元接続コントロールができる。In addition, although the communication channel allocation method was explained in the above embodiment, in multiple access where the order of transmission from the mobile station is determined, the mobile station currently uses a guard time of 11 to absorb variations in distance from the base station. However, as shown in Fig. 2, the mobile station sends a channel request in accordance with frame synchronization 6 from the base station, and the base station measures the distance from the mobile station. By transmitting the transmission order control according to the distance using the communication channel slot 9, even if a mobile station joins the multiple access network in operation midway, the transmission order control according to the distance can be carried out to protect the mobile station. Multiple connection control is possible without expanding time 11.
以上のように、この発明に係る移動体デジタル通信シス
テムの通信チャネル割当方式によれば、基地局より送信
する下り制御チャネルを時分割チャネルスロット構゛成
にしたので、複数の移動局に対し同時に通信チャネルが
指示でき、通信中の移動局には送信出力調整等の他の制
御指示ができる。As described above, according to the communication channel allocation method of the mobile digital communication system according to the present invention, the downlink control channel transmitted from the base station has a time-division channel slot structure, so that it can be used simultaneously for multiple mobile stations. A communication channel can be specified, and other control instructions such as transmission power adjustment can be given to a mobile station in communication.
またガードタイムを広げることなく移動体との距離に応
じた発信順序制御が可能となる効果がある。Furthermore, it is possible to control the transmission order according to the distance to the moving object without increasing the guard time.
第１図はこの発明の一実施例による移動体デジタル通信
システムの通信チャネル割当方式を示す図、第２図はこ
の発明の他の実施例による通信チャネル割当方式を示す
図、第３図は従来の通信チャネル割当方式を示す図であ
る。
図において、１は上り制御チャネル、２は下り制御チャ
ネル、３は上り通信チャネル、４は下り通信チャネル、
５は空信号入り通信チャネル、６はフレーム同期エリア
、７は報知情報エリア、８は通信チャネル割当エリア、
９は通信チャネルスロット、１０は時分割下り制御チャ
ネル、１１はガードタイムである。
なお、図中、同一符号は同一、又は相当部分を示す。FIG. 1 is a diagram showing a communication channel allocation method for a mobile digital communication system according to an embodiment of the present invention, FIG. 2 is a diagram showing a communication channel assignment method according to another embodiment of the invention, and FIG. 3 is a diagram showing a conventional communication channel allocation method. FIG. 2 is a diagram illustrating a communication channel allocation method. In the figure, 1 is an uplink control channel, 2 is a downlink control channel, 3 is an uplink communication channel, 4 is a downlink communication channel,
5 is a communication channel with an empty signal, 6 is a frame synchronization area, 7 is a broadcast information area, 8 is a communication channel allocation area,
9 is a communication channel slot, 10 is a time division downlink control channel, and 11 is a guard time. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (2)
ネルの他にスペクトル拡散通信を用いた上りおよび下り
制御チャネルを設け、 かつ移動局より上り制御チャネルで基地局に対し通信チ
ャネル要求を送信し、基地局より下り制御チャネルで時
分割に通信チャネルを割当ることを特徴とする移動体デ
ジタル通信システムの通信チャネル割当方式。(1) In a mobile digital communication system, in addition to the communication channel, uplink and downlink control channels using spread spectrum communication are provided, and the mobile station transmits a communication channel request to the base station on the uplink control channel, and the base station A communication channel allocation method for a mobile digital communication system characterized by allocating communication channels in a time-division manner using downlink control channels.
とを特徴とする請求項１記載の移動体デジタル通信シス
テムの通信チャネル割当方式。(2) The communication channel allocation method for a mobile digital communication system according to claim 1, wherein the base station performs transmission order control according to distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2147760A JP2585455B2 (en) | 1990-06-05 | 1990-06-05 | Communication Channel Assignment Method for Mobile Digital Communication System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2147760A JP2585455B2 (en) | 1990-06-05 | 1990-06-05 | Communication Channel Assignment Method for Mobile Digital Communication System |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0440024A true JPH0440024A (en) | 1992-02-10 |
| JP2585455B2 JP2585455B2 (en) | 1997-02-26 |
Family
ID=15437545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2147760A Expired - Fee Related JP2585455B2 (en) | 1990-06-05 | 1990-06-05 | Communication Channel Assignment Method for Mobile Digital Communication System |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2585455B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995027380A1 (en) * | 1994-04-05 | 1995-10-12 | Kabushiki Kaisha Toshiba | Mobile radio communication system |
| US6307844B1 (en) | 1996-12-06 | 2001-10-23 | Hitachi, Ltd. | CDMA communication system and its transmission power control method |
| WO2004103010A1 (en) * | 2003-05-13 | 2004-11-25 | Matsushita Electric Industrial Co., Ltd. | Radio base station device, communication terminal device, and control information transmission method |
Citations (4)
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|---|---|---|---|---|
| JPS6062746A (en) * | 1983-09-16 | 1985-04-10 | Nippon Telegr & Teleph Corp <Ntt> | Intermittent reception system in mobile radio |
| JPS62108626A (en) * | 1985-11-06 | 1987-05-19 | Meisei Electric Co Ltd | Incoming call connection control system of radiotelephony equipment |
| JPS63202144A (en) * | 1987-02-17 | 1988-08-22 | Mitsubishi Electric Corp | car phone system |
| JPH0262134A (en) * | 1988-08-29 | 1990-03-02 | Nippon Telegr & Teleph Corp <Ntt> | Radio communication control system |
-
1990
- 1990-06-05 JP JP2147760A patent/JP2585455B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6062746A (en) * | 1983-09-16 | 1985-04-10 | Nippon Telegr & Teleph Corp <Ntt> | Intermittent reception system in mobile radio |
| JPS62108626A (en) * | 1985-11-06 | 1987-05-19 | Meisei Electric Co Ltd | Incoming call connection control system of radiotelephony equipment |
| JPS63202144A (en) * | 1987-02-17 | 1988-08-22 | Mitsubishi Electric Corp | car phone system |
| JPH0262134A (en) * | 1988-08-29 | 1990-03-02 | Nippon Telegr & Teleph Corp <Ntt> | Radio communication control system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995027380A1 (en) * | 1994-04-05 | 1995-10-12 | Kabushiki Kaisha Toshiba | Mobile radio communication system |
| GB2293947A (en) * | 1994-04-05 | 1996-04-10 | Toshiba Kk | Mobile radio communication system |
| GB2293947B (en) * | 1994-04-05 | 1998-10-21 | Toshiba Kk | Mobile radio communication system |
| US5914947A (en) * | 1994-04-05 | 1999-06-22 | Kabushiki Kaisha Toshiba | Mobile radio communication system which allocates spread codes mobiles which are able to determine the distance between a mobile and a base station |
| US6307844B1 (en) | 1996-12-06 | 2001-10-23 | Hitachi, Ltd. | CDMA communication system and its transmission power control method |
| US7006463B2 (en) | 1996-12-06 | 2006-02-28 | Hitachi, Ltd. | CDMA communication system and its transmission power control method |
| WO2004103010A1 (en) * | 2003-05-13 | 2004-11-25 | Matsushita Electric Industrial Co., Ltd. | Radio base station device, communication terminal device, and control information transmission method |
| US8194618B2 (en) | 2003-05-13 | 2012-06-05 | Panasonic Corporation | Radio base station device, communication terminal device, and control information transmission method |
| US8599798B2 (en) | 2003-05-13 | 2013-12-03 | Panasonic Corporation | Radio base station apparatus, radio network controller apparatus, communication terminal apparatus, transmission signal generation method, and radio communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2585455B2 (en) | 1997-02-26 |
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