JP2899042B2 - Retransmission control type airline control method - Google Patents
Retransmission control type airline control methodInfo
- Publication number
- JP2899042B2 JP2899042B2 JP4919590A JP4919590A JP2899042B2 JP 2899042 B2 JP2899042 B2 JP 2899042B2 JP 4919590 A JP4919590 A JP 4919590A JP 4919590 A JP4919590 A JP 4919590A JP 2899042 B2 JP2899042 B2 JP 2899042B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- retransmission
- base station
- channel
- interval
- 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 - Fee Related
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、移動通信におけるアクセス制御方法に関す
るものである。Description: TECHNICAL FIELD The present invention relates to an access control method in mobile communication.
［従来の技術］ 現行の自動車電話では、移動機から基地局ヘの上り信
号同士の衝突による上り制御チャネルのチャネル効率低
下を抑えるために空線制御方式が採用されている。これ
は上り制御チャネルの使用状況を下り制御チャネルにお
いて報知する方法であり、空き状態の場合は空線信号
を、使用中の場合は禁止信号を報知し、これに応じて移
動機がアクセス動作を行なうものである。[Prior Art] In a current mobile phone, an air line control method is adopted in order to suppress a decrease in channel efficiency of an uplink control channel due to collision of uplink signals from a mobile device to a base station. This is a method of reporting the use status of the uplink control channel on the downlink control channel. In the case of an idle state, an empty line signal is reported, and in the case of a busy state, a prohibition signal is reported. It is what you do.
上述のような空線制御方式においては、呼の発生が予
め定めた設定値を越えて増加した場合に、上り制御チャ
ネルがふくそう状態になるのを防ぐために、特定ユーザ
のみにアクセスを許可するため通常の空線信号とは別の
VIP空線信号を設定している。即ちVIP空線信号が報知さ
れている場合には一般ユーザのアクセスは禁止され、特
定ユーザのみ発呼が許可される。第２図にVIP空線信号
による制御の概念を示す。同図において、２−１は下り
応答チャネル、２−２は上りアクセスチャネル、２−３
は空線信号、２−４は一般ユーザのアクセス信号、２−
５は禁止信号、２−６はVIPのアクセス信号、２−７はV
IP空線信号を示している。この図では初め通常の空線信
号２−３が報知されており、一般ユーザ２−４とVIPユ
ーザ２−６の両方が発呼を行なっているが（ここでは両
者が衝突している）、通常の空線信号がVIP空線信号２
−７に切り換えられた後はVIPユーザのみが発呼を許可
されている様子を示している。In the airline control system as described above, in order to prevent the uplink control channel from becoming congested when the number of calls increases beyond a predetermined set value, only a specific user is permitted to access. Different from the normal sky signal
VIP empty signal is set. That is, when the VIP empty line signal is broadcast, access of a general user is prohibited, and only a specific user is allowed to make a call. FIG. 2 shows the concept of control using the VIP empty line signal. In the figure, 2-1 is a downlink response channel, 2-2 is an uplink access channel, 2-3
Is an empty line signal, 2-4 is a general user access signal, and 2- is
5 is a prohibition signal, 2-6 is a VIP access signal, 2-7 is V
This shows the IP empty signal. In this figure, a normal empty signal 2-3 is broadcast first, and both the general user 2-4 and the VIP user 2-6 are calling (here, they collide). Normal empty signal is VIP empty signal 2
After switching to -7, only VIP users are allowed to make calls.
［発明が解決しようとする課題］ 前述のように、従来の方式においては一時的に呼の発
生が増大して制御チャネルが不安定になった場合に、特
定ユーザーのみにアクセスを許可する方式を採用してい
る。しかしこの場合制御チャネルの安定性は保たれるも
のの、規制がかかっている間、他のユーザは全くアクセ
スが不可能であるので、VIP移動機の全体に占める割合
を考慮するとチャネル効率の点からあまり得策であると
はいえないと言う問題点があった。本発明は高トラヒッ
ク時、特に通常トラヒックの状態からVIP規制に至るま
での領域においてトラヒックを制御し、常にチャネルの
効率を維持して制御チャネルを安定させることのできる
制御手段を提供することを目的としている。[Problems to be Solved by the Invention] As described above, in the conventional system, when the occurrence of a call temporarily increases and the control channel becomes unstable, only a specific user is permitted to access. Has adopted. However, in this case, although the stability of the control channel is maintained, other users cannot access at all while regulation is in effect. There was a problem that it was not very advantageous. An object of the present invention is to provide a control means capable of controlling traffic in a high traffic condition, particularly in a region from a normal traffic state to VIP regulation, and constantly maintaining the channel efficiency and stabilizing a control channel. And
［課題を解決するための手段］ 前述の目的を達成するために本発明ではトラヒックの
変化に応じて再送信号の再送間隔を変化させることを最
大の特徴としている。具体的には、例えば、チャネルの
トラヒック量に対してある閾値を設定しておき、これを
越えた場合には再送間隔をある値だけ大きくしていくと
いう操作を繰り返す方法が考えられる。これらは下り応
答チャネルにおいて空線信号、VIP空線信号および禁止
信号の他に、再送間隔を指定する数種類の再生規制信号
を報知することによって実現される。[Means for Solving the Problems] In order to achieve the above object, the present invention is characterized in that the retransmission interval of the retransmission signal is changed according to the change in traffic. Specifically, for example, a method is conceivable in which a certain threshold value is set for the traffic amount of the channel, and when the threshold value is exceeded, an operation of increasing the retransmission interval by a certain value is repeated. These are realized by notifying the downlink response channel of an empty signal, a VIP empty signal, and a prohibition signal, as well as several types of reproduction control signals for designating retransmission intervals.
［実施例］ 本発明の一実施例の再送規制型空線制御方法のタイミ
ング・チャートを第１図に示す。同図において、１−１
は下り応答チャネル、１−２は上り制御チャネル、１−
３は空線信号、１−４は禁止信号、１−５はアクセス信
号、１−６はアクセス信号同士の衝突、１−７は再送間
隔、１−８は再送規制信号（間隔小）、１−９は規制時
再送間隔（間隔小）、１−10は再送規制信号（間隔
大）、１−11は規制時再送間隔（間隔大）を表わしてい
る。[Embodiment] FIG. 1 shows a timing chart of a retransmission-controlled airline control method according to an embodiment of the present invention. In the figure, 1-1
Is a downlink response channel, 1-2 is an uplink control channel, 1-
3 is an empty signal, 1-4 is a prohibition signal, 1-5 is an access signal, 1-6 is collision between access signals, 1-7 is a retransmission interval, 1-8 is a retransmission restriction signal (small interval), 1 Reference numeral -9 denotes a retransmission interval at regulation (small interval), 1-10 denotes a retransmission restriction signal (large interval), and 1-11 denotes a retransmission interval at regulation (large interval).
同図に示すように、基地局にアクセスしようとする移
動機はまず下り応答チャネル１−１において空線信号
（VIP空線信号）、もしくは再送規制信号が報知されて
いることを確かめた後、上り制御チャネル１−２を介し
てアクセス信号を送信する。ここで、もし他の移動機が
送信したアクセス信号との衝突等によってアクセスに失
敗した場合、空線信号が報知されている場合は予め設定
された時間をおいて信号の再送を行なうが、再送規制信
号が報知されている場合はその種類に応じて再送間隔を
変えて、信号の再送を行なう。As shown in the figure, the mobile station trying to access the base station first confirms that an empty signal (VIP empty signal) or a retransmission restriction signal is broadcast on the downlink response channel 1-1, An access signal is transmitted via the uplink control channel 1-2. Here, if access fails due to a collision with an access signal transmitted by another mobile device, or if an empty signal is broadcast, the signal is retransmitted at a preset time, but the retransmission is performed. When the restriction signal is broadcast, the retransmission interval is changed according to the type of the restriction signal, and the signal is retransmitted.
チャネル構成としては従来方式と同様にＡ−ch,P−c
h、及びＶ−chを考え、Ａ−ch下りにおいて空線信号、V
IP空線信号及び数種類の再送規制信号を報知する。再送
規制信号の種類は基地局によって選択されるが、その方
法としては、例えば、各基地局において、周期的にある
一定のトラヒック観測時間を設け、その中でＡ−chの発
呼信号を受信（Ａ−ch上り信号のキャリアレベルが一定
値以上であること）していた（あるいは禁止信号を送信
していた）時間Ａと発呼信号として正確に復号できた信
号の長さに相当する時間Ｂをパラメータとしてトラヒッ
ク量の推定を行ない（すなわち、B/Aが小である程発呼
信号の衝突が増加する）、その値が予め定めた閾値を越
えた場合には現在設定されている再送間隔よりも長い再
送間隔をしめす制御信号を報知し、逆に推定されたトラ
ヒック量が予め定めた閾値を下回った場合は再送間隔を
短くする信号を送出する。As the channel configuration, A-ch, P-c
h, and V-ch, an empty signal, V
The IP broadcast signal and several kinds of retransmission control signals are broadcast. The type of the retransmission restriction signal is selected by the base station. For example, in each base station, a certain fixed traffic observation time is provided, and an A-ch call signal is received in the fixed time. The time A during which the carrier level of the A-ch upstream signal is equal to or higher than a certain value (or during which the prohibition signal is transmitted) and the time corresponding to the length of a signal that can be correctly decoded as a call signal The traffic volume is estimated using B as a parameter (that is, the smaller the B / A, the more the collision of call signals increases). If the value exceeds a predetermined threshold, the currently set retransmission is performed. A control signal indicating a retransmission interval longer than the interval is broadcast, and if the estimated traffic volume falls below a predetermined threshold, a signal for shortening the retransmission interval is transmitted.
［発明の効果］ 以上説明したように、本発明の再送規制型空線制御方
法によれば、VIP規制をかける前の段階においてユーザ
数が増大した場合でも、トラヒックの変化量に応じて再
送信号の再送間隔を変化させることにより、トラヒック
を制御しているので、常に上り制御チャネルの効率を維
持してふくそうを防止し、チャネルの安定状態を維持す
ることができる。第３図は本発明による上り制御チャネ
ルのスループット改善効果を示すもので、３−１は無規
制時のスループット、３−２は再送間隔が小なる場合の
スループット、３−３は再送間隔が中位の場合のスルー
プット、３−４は再送間隔が大なる場合のスループッ
ト、３−５は規制限界を示している。この図からアクテ
ィブユーザ数の増加に伴い基地局が再送間隔を変化させ
ることによってチャネルのスループット特性を変化さ
せ、スループットが減少するのを防ぐことができること
が分る。[Effects of the Invention] As described above, according to the retransmission control type air traffic control method of the present invention, even if the number of users increases at the stage before the VIP restriction is applied, the retransmission signal is controlled according to the amount of change in traffic. Since the traffic is controlled by changing the retransmission interval, the efficiency of the uplink control channel can be constantly maintained, congestion can be prevented, and the channel can be maintained in a stable state. FIG. 3 shows the effect of improving the throughput of the uplink control channel according to the present invention, where 3-1 is the throughput at the time of unregulated traffic, 3-2 is the throughput when the retransmission interval is small, and 3-3 is the medium retransmission interval. 3-4 indicates the throughput when the retransmission interval is large, and 3-5 indicates the restriction limit. From this figure, it can be seen that the base station changes the retransmission interval with the increase in the number of active users, thereby changing the throughput characteristics of the channel and preventing a decrease in the throughput.
第１図は本発明の一実施例の再送規制型空線制御方式の
タイミング・チャート、第２図はVIP空線制御方式のタ
イミング・チャート、第３図は本発明による上り制御チ
ャネルのスループット改善効果を示す図である。 １−１……下り応答チャネル、１−２……上り制御チャ
ネル、１−３……空線信号、１−４……禁止信号、１−
５……アクセス信号、１−６……アクセス信号同士の衝
突、１−７……再送間隔、１−８……再送規制信号（間
隔小）、１−９……規制時再送間隔（間隔小）、１−10
……再送規制信号（間隔大）、１−11…規制時再送間隔
（間隔大）、２−１……下り応答チャネル、２−２……
上りアクセスチャネル、２−３……空線信号、２−４…
…アクセス信号（一般ユーザ）、２−５……禁止信号、
２−６……アクセス信号（VIP）、２−７……VIP空線信
号、３−１……スループット（無規制時）、３−２…ス
ループット（再送間隔小）、３−３…スループット（再
送間隔中）、３−４……スループット（再送間隔大）、
３−５…規制限界FIG. 1 is a timing chart of a retransmission control type air traffic control system according to an embodiment of the present invention, FIG. 2 is a timing chart of a VIP air traffic control system, and FIG. 3 is an improvement in throughput of an uplink control channel according to the present invention. It is a figure showing an effect. 1-1 ... downlink response channel, 1-2 ... uplink control channel, 1-3 ... empty line signal, 1-4 ... prohibition signal, 1-
5 ... access signal, 1-6 ... collision between access signals, 1-7 ... retransmission interval, 1-8 ... retransmission restriction signal (small interval), 1-9 ... restricted retransmission interval (small interval) ), 1-10
... retransmission restriction signal (large interval), 1-11 ... retransmission interval at restriction (large interval), 2-1 ... downlink response channel, 2-2 ...
Uplink access channel 2-3 ... Empty signal 2-4 ...
... access signal (general user), 2-5 ... prohibition signal,
2-6: Access signal (VIP), 2-7: VIP empty signal, 3-1: Throughput (unregulated), 3-2: Throughput (small retransmission interval), 3-3: Throughput ( During retransmission interval), 3-4 ... throughput (large retransmission interval),
3-5: Limits of regulation
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−214826（ＪＰ，Ａ) 特開 平１−276935（ＪＰ，Ａ) 特開 昭62−284531（ＪＰ，Ａ) 特開 平２−14631（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) H04B 7/26 H04Q 7/00 - 7/38 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-214826 (JP, A) JP-A-1-276935 (JP, A) JP-A-62-284531 (JP, A) JP-A-2- 14631 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) H04B 7/26 H04Q 7/00-7/38
Claims (1)
の移動機からなる移動通信であって、移動機から基地局
への上り制御チャネルおよび基地局から移動機への下り
応答チャネルからなる制御チャネルを有し、各移動機が
必要に応じて基地局に対して前記上り制御チャネルを用
いてランダムアクセスを行ない、かつ、呼の発生が予め
定めた設定値を越えて変化した場合に、下り応答チャネ
ルにより再送規制信号を報知する機能を有するシステム
において、トラヒックの変動量に応じて信号の再送間隔
を変化させることを特徴とする再送規制型空線制御方
法。1. A mobile communication system comprising a radio base station and a plurality of mobile stations controlled by the base station, comprising: an uplink control channel from the mobile station to the base station and a downlink response channel from the base station to the mobile station. Has a control channel, each mobile station performs random access to the base station using the uplink control channel as needed, and, if the occurrence of the call has changed beyond a predetermined set value In a system having a function of notifying a retransmission restriction signal through a downlink response channel, a retransmission restriction type air line control method characterized by changing a signal retransmission interval according to a traffic fluctuation amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4919590A JP2899042B2 (en) | 1990-03-02 | 1990-03-02 | Retransmission control type airline control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4919590A JP2899042B2 (en) | 1990-03-02 | 1990-03-02 | Retransmission control type airline control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03253126A JPH03253126A (en) | 1991-11-12 |
| JP2899042B2 true JP2899042B2 (en) | 1999-06-02 |
Family
ID=12824230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4919590A Expired - Fee Related JP2899042B2 (en) | 1990-03-02 | 1990-03-02 | Retransmission control type airline control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2899042B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2788147B2 (en) * | 1992-01-07 | 1998-08-20 | 富士通テン株式会社 | Traffic control device in AVM system of arbitrary transmission system |
| JP4684084B2 (en) * | 2005-11-18 | 2011-05-18 | 京セラ株式会社 | Data retransmission control method, system, and data retransmission control device |
| JP4805081B2 (en) | 2006-09-29 | 2011-11-02 | 富士通株式会社 | Wireless relay device, wireless relay method, and wireless relay program |
-
1990
- 1990-03-02 JP JP4919590A patent/JP2899042B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03253126A (en) | 1991-11-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |