JPS62284531A - Common radio channel control system - Google Patents
Common radio channel control systemInfo
- Publication number
- JPS62284531A JPS62284531A JP61127251A JP12725186A JPS62284531A JP S62284531 A JPS62284531 A JP S62284531A JP 61127251 A JP61127251 A JP 61127251A JP 12725186 A JP12725186 A JP 12725186A JP S62284531 A JPS62284531 A JP S62284531A
- Authority
- JP
- Japan
- Prior art keywords
- control signal
- mobile station
- time
- control
- signal transmission
- 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
- 230000008054 signal transmission Effects 0.000 claims abstract description 45
- 238000004891 communication Methods 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000001788 irregular Effects 0.000 abstract description 10
- 230000005764 inhibitory process Effects 0.000 abstract 5
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
（産業上の利用分野）
本発明は、無線基地局を有し、交換回線によって、固定
網の任意の電話と移動局、又は移動局相互の間を接続す
ることが可能な共通無線回線制御方式に関する。Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention has a wireless base station and can communicate between any telephone and mobile station in a fixed network or between mobile stations through a switched line. This invention relates to a common radio channel control system that allows connections between
（従来の技術）
無線基地局を有する移動通信において、通信用無線回線
群とは別に、全ての移動局が共通で使用する１回線もし
くは数回線の双方向の制御専用無線回線を設け、移動局
送信用をＡチャネルと呼び、移動局受信用をＰチャネル
と呼ぶ。従来技術として、Ｐチャネルについてはフレー
ム閘成とし、無線基地局から移動局向けに制御信号送信
可否をフレーム毎に送信することによって、無線基地局
が被呼応答信号を待ち受けている時間帯は、Ａチャネル
で他の移動局が送信する制御信号の送信を一時的に禁止
すると同時に、同−へチャネルで該当する被呼移動局は
その禁止時間帯内で被呼応答信号を送信することによっ
て、被呼応答信号と他の移動局が送信する制御信号の衝
突を防止する方法がある。(Prior Art) In mobile communication using a radio base station, apart from a group of communication radio lines, one or several bidirectional control radio lines commonly used by all mobile stations are provided. The channel for transmission is called the A channel, and the channel for mobile station reception is called the P channel. As a conventional technique, frame control is used for the P channel, and the radio base station transmits the control signal transmission permission/non-transmitability information to the mobile station for each frame. By temporarily prohibiting the transmission of control signals transmitted by other mobile stations on the A channel, and at the same time, the corresponding called mobile station on the same channel transmits a called response signal within the prohibited time period. There is a method for preventing a collision between a called response signal and a control signal transmitted by another mobile station.
第２図は通信回線の構成を示し、３７は無線基地局、３
２− （ａ） 、 ３２− （ｂ） 、 ３２− （ｃ
） 、 ３２− （ｄ）は移動局、４４は交換局、４６
は固定電話、３０は制御専用無線回路、６はＰチャネル
、２９はＡチャネルを示す、また３１は通信用無線回線
群、４３は有線回線群５４５は電話回線群を示している
。移動局は３４の送受信器、３５の制御部、３６の端末
、３３のアンテナから成り、３４の送受信器は３５の制
御部の制御によって、３０の制御専用無線回線又は３１
の通信用無線回線群の中から任意の１回線を選択して送
信及び受信することができる。３７の無線基地局は４１
の制御専用無線回線用送受信器、４２の通信用無線回線
用送受信器群。Figure 2 shows the configuration of the communication line, where 37 is a wireless base station;
2-(a), 32-(b), 32-(c
), 32-(d) is a mobile station, 44 is a switching center, 46
30 is a fixed telephone, 30 is a control dedicated radio circuit, 6 is a P channel, 29 is an A channel, 31 is a communication radio line group, 43 is a wired line group 545 is a telephone line group. The mobile station consists of 34 transceivers, 35 control units, 36 terminals, and 33 antennas, and the 34 transceivers are controlled by the control unit 35 and connected to 30 dedicated control radio lines or 31
It is possible to select any one line from a group of wireless communication lines for transmission and reception. 37 wireless base stations are 41
42 control-dedicated radio line transceivers, and 42 communication radio line transceivers.
４０の制御部、３９のアンテナ共用器、から成り、４１
の制御専用回線用送受信器は３０の制御専用無線回線に
、４２の通信用無線回線用送受信器群は３１の通（ａ用
無線回線群にそれぞれ対応している。Consists of 40 control units, 39 antenna duplexers, 41
The dedicated control line transceiver corresponds to the 30 control dedicated radio lines, and the 42 communication radio line transceiver groups correspond to the 31 radio line groups (a).
第３図は従来の無線回線制御方式における制御専用無線
回線の信号の流れを示している。１，２゜３．４は移動
局３２−（ａ）、３２−（ｂ） 、３２−（ｃ） 、３
２−（ｄ）の送信する信号の流れを示す、また、５は、
各移動局において受信されているＰチャネルの信号を示
す、Ｐチャネルは４７に示すフレーム長ＴＲのフレーム
で構成され、固定電話から移動局に着信がない時は、無
線基地局はＰチャネルに２６の制御信号送信許可信号を
、着信があった時には２８の被呼応答信号送信許可信号
を送信し、フレーム毎に制御信号送信可否を各移動局に
通知する。移動局３２−（ａ）、移動局３２−（ｂ）は
制御信号許可信号２６によって送信許可を確認し、任意
時刻に制御信号６，１２を送信している。また、２０は
移動局３２−（ａ）の送信した制御信号６と移動局３２
−（ｂ）の送信した制御信号１２が無線回線上で衝突し
たことを示すが、この場合には再衝突を避けるために、
移動局３２−（ａ）は７に示すようにＴＤ＋ＴＲＬの時
間待ち合わせ、移動局３２−（ｂ）は１３に示すように
ＴＤ＋ＴＲ，の時間待ち合わせを行なった後に、それぞ
れ１１．１７の制御信号を再送信する。ここで、ＴＤは
信号が無線基地局に到達しなかったことを検出するのに
要する時間、ＴＲ□、ＴＲ，は無作為に決定する不規則
な待時間である。FIG. 3 shows the flow of signals on a control dedicated radio line in a conventional radio line control system. 1,2°3.4 are mobile stations 32-(a), 32-(b), 32-(c), 3
2-(d) shows the flow of the signal to be transmitted, and 5 shows the flow of the signal to be transmitted.
The P channel, which indicates the P channel signal being received at each mobile station, is composed of frames with a frame length TR shown in 47. When there is no incoming call from the fixed telephone to the mobile station, the radio base station transmits the P channel signal to the P channel at 26. 28 control signal transmission permission signals are transmitted when a call is received, and 28 called response signal transmission permission signals are transmitted, and each mobile station is notified of whether control signal transmission is possible or not for each frame. The mobile station 32-(a) and the mobile station 32-(b) confirm transmission permission using the control signal permission signal 26, and transmit the control signals 6 and 12 at arbitrary times. Further, 20 indicates the control signal 6 transmitted by the mobile station 32-(a) and the mobile station 32-(a).
- Indicates that the transmitted control signals 12 in (b) have collided on the wireless line, but in this case, in order to avoid re-collision,
The mobile station 32-(a) waits for TD+TRL as shown in 7, and the mobile station 32-(b) waits for TD+TR as shown in 13, and then retransmits the control signal in 11.17. Send. Here, TD is the time required to detect that the signal has not reached the radio base station, and TR□ and TR are irregular waiting times determined at random.
一方、固定電話から移動局３２−（ｄ）に対して呼びが
生ずると、無線基地局はＰチャネルで２７の呼出信号を
送信し、また制御信号送信禁止時間帯２１のフレームＦ
ａの期間中は被呼応答信号以外の制御信号を送信するこ
とを禁する被呼応答信号送信許可信号２８を送信する。On the other hand, when a call occurs from the fixed telephone to the mobile station 32-(d), the radio base station transmits a paging signal 27 on the P channel, and also sends a frame F in the control signal transmission prohibited time period 21.
During the period a, a called response signal transmission permission signal 28 is transmitted that prohibits the transmission of any control signal other than the called response signal.
３Ｚ−（ｄ）の被呼移動局は呼出信号２７を受信し、
被呼応答信号送信許可信号２８によって被呼応答信号送
信用に割り当てられたＦａ内に被呼応答信号２５を送信
することで他の移動局の送信する制御信号との衝突を防
止する。また、制御信号送信禁止時間帯において新たに
発生した被呼応答信号以外の制御信号を送信しようとし
ている移動局３２−（ｃ）は、２３に示す禁止時間終了
時刻し、まで時間待ち合わせを行い、制御信号の送信を
開始する。The called mobile station of 3Z-(d) receives the paging signal 27,
By transmitting the called response signal 25 within the Fa allocated for transmitting the called response signal by the called response signal transmission permission signal 28, collision with control signals transmitted by other mobile stations is prevented. Furthermore, the mobile station 32-(c) which is attempting to transmit a control signal other than the newly generated call response signal during the control signal transmission prohibited time period waits until the prohibited time end time shown in 23, and Start sending control signals.
また、第４図は従来の方式において制御信号送信禁止時
間帯に複数の移動局が被呼応答信号以外の制御信号を送
信しようとし、制御信号送信禁止時間帯終了直後にこれ
らの信号が衝突する場合の例を示している。 ２０は、
移動局３２−（ａ）、３２−（ｂ）がある制御信号送信
許可フレーム内に制御信号を送信したが、これらの信号
が衝突したことを示し、このため信号が誤って何れも基
地局に到着しない。Figure 4 also shows that in the conventional system, multiple mobile stations attempt to transmit control signals other than the called response signal during the control signal transmission prohibited time period, and these signals collide immediately after the control signal transmission prohibited time period ends. An example is shown below. 20 is
This indicates that the mobile stations 32-(a) and 32-(b) transmitted control signals within a certain control signal transmission permission frame, but these signals collided, and as a result, the signals were erroneously transmitted to the base station. It doesn't arrive.
移動局３２−（ａ）、３２−（ｂ）は、一定時間経過後
も通信要求信号に対する応答が基地局から返送されない
ことを検出し、移動局３２−（ａ）は７に示す時間待ち
合わせ、即ち（ＴＤ＋ＴＲ１）経過後、移動局３２−
（ｂ）は１２に示す時間待ち合わせ、即ち（ＴＤ＋ＴＲ
，）経過後のそれぞれ時点８，１４が再送信のタイミン
グとなるが、８．１４は何れも制御信号送信禁止時間帯
Ｆａに遭遇したため、何れもＦａ終了直後の時刻ｔ１に
、６と同一内容の１１．１２と同一内容の１７をそれぞ
れ再送信する。The mobile stations 32-(a) and 32-(b) detect that a response to the communication request signal is not returned from the base station even after a certain period of time has elapsed, and the mobile station 32-(a) waits for the time shown in 7. That is, after (TD+TR1) has elapsed, the mobile station 32-
(b) is the waiting time shown in 12, i.e. (TD+TR
, ) after the elapse of time 8 and 14, respectively, are the timings for retransmission, but since both times 8 and 14 encountered the control signal transmission prohibition time Fa, at time t1 immediately after the end of Fa, the same content as 6 was sent. 11, 12 and 17 with the same content are retransmitted, respectively.
一方、１８は、移動局３２− （ｃ）が制御信号送信禁
止時間帯内で新たに発生した制御信号°を送信しようと
していることを示しているが、Ｆａに遭遇したため、Ｆ
ａａ了直後の時刻ｔいまで待ち合わせ、１９の信号を送
信する。したがって１１．１７．１９は送信時刻が一致
し衝突するため、信号が誤り無線基地局に到達しない。On the other hand, 18 indicates that the mobile station 32-(c) is trying to transmit a newly generated control signal ° within the control signal transmission prohibited time period, but because it encountered Fa,
It waits until time t immediately after aa is completed and transmits the signal 19. Therefore, on 11.17.19, the transmission times coincide and there is a collision, so the signal does not reach the erroneous radio base station.
（発明が解決しようとする問題点）
以上説明したような制御信号送信禁止時間帯直後の信号
の衝突は、移動局収容数又はトラヒックが多いとき程著
しい、従って信号の衝突が増加すれば、再送回数も増え
、接続に時間がかかる。又再送回数を規定した場合は呼
損が増加する。(Problem to be Solved by the Invention) Signal collisions immediately after the control signal transmission prohibition period as explained above are more serious when the number of mobile stations accommodated or the traffic is large. Therefore, as signal collisions increase, retransmission The number of calls increases, and it takes time to connect. Furthermore, if the number of retransmissions is specified, call losses will increase.
本発明はこの欠点を改善することを目的とする。The present invention aims to improve this drawback.
（問題点を解決するための手段）
上記目的を達成するための本発明の特徴は、移動局で再
送信制御信号か新たに発生した制御信号かを判断し、新
たに発生した制御信号ならば禁止時間帯直後に送信し、
再送信制御信号なら制御信号送信禁止時間帯終了後不規
則な時間間隔の待ち合わせ後に送信することで制御信号
送信禁止時間帯終了直後の制御信号の衝突を減少させる
ものである。(Means for Solving the Problems) The feature of the present invention for achieving the above object is that the mobile station determines whether the control signal is a retransmission control signal or a newly generated control signal, and if the control signal is a newly generated control signal, Send immediately after the prohibited time,
Retransmission control signals are transmitted after waiting at irregular time intervals after the end of the control signal transmission prohibited time period, thereby reducing collisions of control signals immediately after the control signal transmission prohibited time period ends.
（作用）
本発明は、従来制御信号送信禁止時間帯に遭遇した被呼
応答信号以外の全ての制御信号は制御信号送油禁止時間
帯終了まで待ち合わせ、制御信号送信禁止時間帯終了直
後に送信する方法に代えて、その制御信号が再送信制御
信号でない場合は制御信号送信禁止時間帯終了直後に送
信し、再送信制御信号であるならば制御信号送信禁止時
間帯終了からさらに不規則時間の待ち合わせを行った後
再送信制御信号を送信することによって、制御信号送信
禁止時間帯終了直後の制御信号の衝突を減少することが
できる。(Operation) The present invention waits for all control signals other than the called response signal that encountered the conventional control signal transmission prohibited time period until the end of the control signal oil sending prohibited time period, and transmits them immediately after the control signal transmission prohibited time period ends. Alternatively, if the control signal is not a retransmission control signal, it is sent immediately after the end of the control signal transmission prohibited time period, and if it is a retransmission control signal, it is sent at an irregular time after the end of the control signal transmission prohibited time period. By transmitting the retransmission control signal after performing this, it is possible to reduce collisions of control signals immediately after the control signal transmission prohibited time period ends.
（実施例）
第１図は本発明による共通無線回線制御方式を実施した
制御専用無線回線の制御信号の流れを示す一例である。(Embodiment) FIG. 1 is an example showing the flow of control signals of a control dedicated radio line implementing the common radio line control system according to the present invention.
移動局受信用の制御専用無線回線であるＰチャネルの信
号をフレーム長Ｔｎのフレームで構成し、固定電話から
移動局に呼びかない時には無線基地局Ｐチャネルで通信
要求信号送信許可信号をフレーム毎に送信する。The signal on the P channel, which is a control dedicated wireless line for mobile station reception, is composed of frames with a frame length of Tn, and when the fixed telephone does not call the mobile station, the wireless base station P channel sends a communication request signal transmission permission signal for each frame. Send.
いま移動局３２−（ａ）、３２−（ｂ）が、制御信号送
信許可フレーム内にそれぞれ６，１２の制御信号を送信
したとすれば、２０に示されるようにこれらの信号は衝
突するため、信号誤りとなり何れも基地局に到着しない
、移動局３２−（ａ）、３２−（ｂ）は、一定時間経過
後も送信した制御信号に対する応答が無線基地局から返
送されない場合には、それぞれ（ＴＤ＋ＴＲユ）経過後
、及び（ＴＤ＋ＴＲ，）経過後の時点８，１４が再送信
のタイミングとなる。ところが時点８，１４は制御信号
禁止時間帯Ｆａに遭遇するため２３のＦａ終終端側し、
まで待ち合わせ、何れも再送信であるからさらに不規則
時間の待ち合わせを行う。即ち移動局３２−（ａ）はＴ
Ｒ１経過後、また移動局３２−（ｂ）はＴＲ，経過後に
、それぞれ６と同じ内容の１１．及び１２と同じ内容の
１７の制御信号を再送信する。但しＴＲ，、ＴＲ４は無
作為に決定される不規則な時間である。移動局３２−（
ｃ）では時点１８において新たに発生した制御信号を送
信しようとしたが、制御信号禁止時間帯Ｆａに遭遇した
ため、ｔ４まで待ち合わせた後制御信号の送信を開始す
る。したがって、移動局３２−（ａ）、３２−（ｂ）、
３２−（Ｃ）の送信する制御信号１１，１７．１９は送
信時刻が異なるため、何れもＦａの終了と同時に信号を
送信していた従来の方法と異なり、衝突することがない
０以上、制御信号送信禁止時間帯に複数の移動局が被呼
応答信号以外の信号を送信しようとし、制御信号送信禁
止時間終了直後から、再送か否かでこれらを送信する待
ち合わせ時間を変える共通無線回線制御方式について述
べたが、待ち合わせ時間を変えることによって制御信号
の疎通が改善される。また以上では移動局３２−（Ｃ）
は時刻し、から送信するように説明したが、ｔ８から任
意の所定時間だけ待ってから送信することもできる。こ
の待時間は移動局毎にランダムに定めることもできる。If the mobile stations 32-(a) and 32-(b) transmit 6 and 12 control signals, respectively, within the control signal transmission permission frame, these signals will collide as shown in 20. , the mobile stations 32-(a) and 32-(b), which have signal errors and do not arrive at the base station, each The retransmission timings are after (TD+TR) and at points 8 and 14 after (TD+TR,) have passed. However, at time points 8 and 14, the control signal prohibition time period Fa is encountered, so the Fa termination side of 23 is set.
Since both are retransmissions, further waiting is required at irregular times. That is, the mobile station 32-(a) is T
After R1 has elapsed, the mobile station 32-(b) also sends 11. with the same content as 6 after TR has elapsed. and 17 control signals with the same content as 12 are retransmitted. However, TR, TR4 are irregular times determined at random. Mobile station 32-(
In c), an attempt is made to transmit a newly generated control signal at time 18, but since the control signal prohibition time period Fa is encountered, transmission of the control signal is started after waiting until t4. Therefore, mobile stations 32-(a), 32-(b),
Since the control signals 11, 17, and 19 transmitted by 32-(C) have different transmission times, unlike the conventional method in which the signals were transmitted at the same time as the end of Fa, the control signals 11 and 17. A common radio line control method in which multiple mobile stations attempt to transmit signals other than a called response signal during the signal transmission prohibited time period, and the waiting time for transmitting these signals is changed immediately after the end of the control signal transmission prohibited time depending on whether or not to retransmit. As mentioned above, communication of control signals can be improved by changing the waiting time. Moreover, in the above, mobile station 32-(C)
Although it has been explained that the data is transmitted after the time t8, it is also possible to wait an arbitrary predetermined time from t8 before transmitting. This waiting time can also be determined randomly for each mobile station.
又は一定値としてもよい、なお、上記待時間の周毎の間
隔は好ましくは１例えば、制御信号の継続時間の３倍程
度とする。Alternatively, it may be set to a constant value. The interval of the waiting time for each cycle is preferably 1, for example, about three times the duration of the control signal.
次に本発明の効果を、第５図と第６図によりコンピュー
タによるシミュレーションによって示す。Next, the effects of the present invention will be illustrated by computer simulations in FIGS. 5 and 6.
なお１曲線Ａは従来のアロハ方式、Ｂは特願昭６１−３
３８４５号に示される方式、Ｃは本発明による方式を示
す、第５図は呼生起率に対する不達、率を示したもので
ある６呼生起率とは１秒間に何ｃａｌｌの呼が発生する
かを表わし、その制御回線で何加入の加入者を収容する
か、ということに対応する。不達率はそれらの加入者が
送信した信号が基地局に到達しないであろう確率を表わ
す、性能評価の一例として９９％値を考える。即ち１％
の不達率を規定したとき、いくらの呼生起率まで許され
るか、という限界値を考える。従来の単なる着呼保護方
式（図中（Ｂ））では呼生起率で約７．５ｃａｌｌ／ｓ
（加入者数でいうと９万加入に相当）であるのに対し、
本発明による（図中（Ｃ））では約８．３ｃａｌｌ／ｓ
（加入者数でいうと１０万人に相当）まで許容できる。Note that 1 curve A is the conventional Aloha method, and B is the patent application 1986-3.
3845, and C shows the method according to the present invention. Figure 5 shows the call origination rate versus non-delivery rate. 6Call origination rate is the number of calls that occur in one second. It corresponds to how many subscribers can be accommodated on that control line. The non-delivery rate represents the probability that signals transmitted by those subscribers will not reach the base station; consider a 99% value as an example of performance evaluation. i.e. 1%
Let's consider the limit value of what call origination rate is allowed when the non-delivery rate is specified. With the conventional simple call protection method ((B) in the figure), the call origination rate is approximately 7.5 calls/s.
(equivalent to 90,000 subscribers in terms of number of subscribers), whereas
According to the present invention ((C) in the figure), approximately 8.3 calls/s
(equivalent to 100,000 subscribers).
これは即ち１本の制御回線で従来に比べ約ｌθ％増の加
入者を収容できることを示しており、回線効率・周波数
有効利用の点から考えると有利である。逆に、例えば７
．５ｃａｌｌ／ｓの呼生起率に固定して考えると従来方
式では不達率が１％であったのに対し１本発明による方
式では０．５％と半分になっていることがわかる。即ち
呼生起率が一定という条件のもとでは１本発明による方
式においては制御回線上の衝突によって生ずる呼損が減
少することがわかる。This means that one control line can accommodate about lθ% more subscribers than before, which is advantageous from the point of view of line efficiency and effective frequency utilization. On the other hand, for example, 7
．． When considering a fixed call origination rate of 5 calls/s, it can be seen that while the non-delivery rate was 1% in the conventional method, it was halved to 0.5% in the method according to the present invention. That is, it can be seen that under the condition that the call origination rate is constant, the system according to the present invention reduces call losses caused by collisions on the control line.
第６図は呼生起率に対する平均リサイクル回数を示す、
一般に送信した信号が衝突すると、何回かりサイクルを
行い信号の疎通率を改善するが。Figure 6 shows the average number of recycles versus the call occurrence rate.
Generally, when transmitted signals collide, the signal goes through several cycles to improve the signal communication rate.
この図は信号疎通に要するリサイクルの期待値を示した
ものである。リサイクルの期待値が大きいほど信号の疎
通に要する時間がかかるといえる。This figure shows the expected value of recycling required for signal communication. It can be said that the larger the expected value of recycling, the longer it takes for signal communication.
発明による図から明らかなように本発明による方式では
リサイクルの期待値という点でも従来方式にくらべ優れ
ていることがわかる。As is clear from the diagram according to the invention, the method according to the present invention is superior to the conventional method in terms of the expected value of recycling.
（発明の効果）
以上説明したように、制御信号送信禁止時間帯に送信し
ようとした被呼応答信号以外の制御信号を制御信号送信
禁止時間帯終了後に送信する際、その制御信号が再送信
制御信号か否かによって信号送信タイミングを変えるこ
とにより、制御信号送信禁止時間帯終了直後に全ての制
御信号を送信する従来の方法に比べ、送信した制御信号
が衝突する確率が減少し、制御信号の疎通が改善される
。(Effect of the invention) As explained above, when a control signal other than the called response signal that was attempted to be transmitted during the control signal transmission prohibited time period is transmitted after the control signal transmission prohibited time period ends, the control signal is retransmitted. By changing the signal transmission timing depending on whether the control signal is a signal or not, compared to the conventional method of transmitting all control signals immediately after the end of the control signal transmission prohibition period, the probability that the transmitted control signals will collide is reduced, and the control signal Communication will be improved.
また、衝突に起因する制御信号再送回数が減少する為、
通話回線設定に要する時間が短くなるとともに呼損も改
善される効果もある。In addition, since the number of control signal retransmissions due to collisions is reduced,
This has the effect of shortening the time required to set up a call line and reducing call loss.
第１図は本発明による無線回線制御方式を実施した制御
専用無線回線の制御信号の流れを示す図、第２図は本発
明及び従来の無線回線制御方式で対象としている通信回
線の構成説明図、第３図は従来の無線回線制御方式によ
る制御専用回線の流れを示す図、第４図は従来の無線回
線制御方式による信号の衝突を示す図で、第５図と第６
図は本発明の詳細な説明図である。
１・・・移動局３２−（ａ）の送信する制御信号の流れ
、２・・・移動局３２−（ｂ）の送信する制御信号の流
れ、３・・・移動局３２−（ｃ）の送信する制御信号の
流れ、４・・・移動局３２−（ｄ）の送信する信号の流
れ、５・・・移動局受信用制御専用無線回線、６・・・
移動局３２−（ａ）において新たに発生し、送信した制
御信号１，７・・・衝突検出時間及び不規則待ち合わせ
時間、８・・・制御信号送信禁止フレームに遭遇した移
動局３２−（ａ）の再送信タイミング、９・・・制御信
号送信禁止フレーム終了時点、１０・・・不規則待ち合
わせ時間、１１・・・移動局３２−（ａ）が送信した再
送信制御信号、１２・・・移動局３２−（ｂ）において
新たに発生、し送信した制御信号。
１３・・・衝突検出時間及び不規則待ち合わせ時間、１
４・・・制御信号送信禁止フレームに遭遇した移動局３
２−（ｂ）の再送信タイミング、１５・・・制御信号送
信禁止フレーム終了時点、 １６・・・不規則待ち合わ
せ時間、１７・・・移動局３２−（ｂ）において送信し
た再送信制御信号、１８・・・移動局３２−（ｃ）にお
いて制御信号送信禁止フレーム内で新たに発生した制御
信号、１９・・・移動局３２−（Ｃ）の送信した制御信
号、 ２０・・・６と１２の衝突期間、２１・・・制御
信号送信禁止フレーム、２２・・・制御信号送信禁止フ
レーム開始時刻、２３・・・制御信号送信禁止フレーム
終了時刻、２４・・・時間線、２５・・・被呼応答信号
、２６・・・制御信号送信許可信号、２７・・・呼出信
号、２８・・・被呼応答信号送信許可信号、２９・・・
移動局送信用制御専用無線回線、３０・・・制御専用無
線回線群、３１−・・通信用無線回線群、３２−（ａ）
、３２−（ｂ）、３２−（ｃ）、３２−（ｄ）−移動局
、 ３３・・・移動局アンテナ、３４・・・移動局受信
部、３５・・・移動局制御部、３６・・・移動局電話機
、３７・・・無線基地局、３８・・・無線基地局アンテ
ナ、３９・・・無線基地局アンテナ共用器、４０・・・
無線基地局制御部、４１・・・制御専用無線回線送受信
部、４２・・・通信用無線回線送受信部、４３・・・有
線回線群、４４交換局、４５・・・電話回線群、４６・
・・固定電話、４７・・・Ｐチャネルのフレーム長。Fig. 1 is a diagram showing the flow of control signals of a control-dedicated radio line implementing the radio line control method according to the present invention, and Fig. 2 is an explanatory diagram of the configuration of a communication line targeted by the present invention and the conventional radio line control method. , Fig. 3 is a diagram showing the flow of a dedicated control line using a conventional radio line control system, Fig. 4 is a diagram showing signal collision according to a conventional radio line control system, and Figs.
The figure is a detailed explanatory diagram of the present invention. 1... Flow of control signals transmitted by mobile station 32-(a), 2... Flow of control signals transmitted by mobile station 32-(b), 3... Flow of control signals transmitted by mobile station 32-(c) Flow of control signals to be transmitted, 4... Flow of signals transmitted by mobile station 32-(d), 5... Control dedicated radio line for mobile station reception, 6...
Mobile station 32-(a) newly generated and transmitted control signals 1, 7...Collision detection time and irregular waiting time, 8... Mobile station 32-(a) which encountered a control signal transmission prohibition frame. ) retransmission timing, 9... End point of control signal transmission prohibited frame, 10... Irregular waiting time, 11... Retransmission control signal transmitted by mobile station 32-(a), 12... A control signal newly generated and transmitted by the mobile station 32-(b). 13... Collision detection time and irregular meeting time, 1
4...Mobile station 3 that encountered a control signal transmission prohibition frame
2-(b) retransmission timing, 15... End point of control signal transmission prohibited frame, 16... Irregular waiting time, 17... Retransmission control signal transmitted by mobile station 32-(b), 18... Control signal newly generated in the control signal transmission prohibited frame in mobile station 32-(c), 19... Control signal transmitted by mobile station 32-(C), 20... 6 and 12 collision period, 21... control signal transmission prohibited frame, 22... control signal transmission prohibited frame start time, 23... control signal transmission prohibited frame end time, 24... time line, 25... affected Call response signal, 26... Control signal transmission permission signal, 27... Calling signal, 28... Called response signal transmission permission signal, 29...
Control-dedicated radio line for mobile station transmission, 30...Control-dedicated radio line group, 31-...Communication radio line group, 32-(a)
, 32-(b), 32-(c), 32-(d)-mobile station, 33... mobile station antenna, 34... mobile station receiving section, 35... mobile station control section, 36. ...Mobile station telephone, 37... Radio base station, 38... Radio base station antenna, 39... Radio base station antenna duplexer, 40...
Radio base station control unit, 41... Control dedicated radio line transmitting/receiving unit, 42... Communication radio line transmitting/receiving unit, 43... Wired line group, 44 Switching station, 45... Telephone line group, 46...
...Landline telephone, 47...P channel frame length.
Claims (1)
も１回線の制御専用無線回線と通信用無線回線群をそれ
ぞれ設けて、固定網の電話と移動局、及び移動局間の通
信用無線回線の接続を行う際、移動局被呼時に移動局送
信用の制御専用無線回線で被呼移動局が送信する被呼応
答信号の送信時間帯を指示することに依って、被呼移動
局が該当する時間帯で被呼応答信号を送信し、他の移動
局にはその時間帯を制御信号送信禁止時間帯とする共通
無線回線制御方式において、 制御信号送信禁止時間帯に制御信号の再送をすべき移動
局は制御信号送信禁止時間帯終了から特定の時間幅内で
ランダムな時間経過後に制御信号を送信し、 制御信号送信禁止間帯で新たに制御信号送信が必要な移
動局は制御信号送信禁止間帯終了から所定時間後に制御
信号を送信することを特徴とする共通無線回線制御方式
。[Scope of Claims] It has a wireless base station that controls a plurality of mobile stations, and is provided with at least one wireless line dedicated to control and a group of communication wireless lines, so that fixed network telephones, mobile stations, and mobile When connecting wireless lines for communication between stations, when a mobile station is called, it is possible to specify the transmission time period for the called response signal that the called mobile station sends on the control-dedicated wireless line for mobile station transmission. , in the common radio link control system in which the called mobile station transmits a called response signal during the corresponding time period, and the control signal transmission is prohibited time period for other mobile stations. A mobile station that should retransmit a control signal must transmit a control signal after a random period of time has elapsed within a specific time range from the end of the control signal transmission prohibited period, and must transmit a new control signal during the control signal transmission prohibited period. A common radio channel control system characterized in that a mobile station transmits a control signal a predetermined time after the end of the control signal transmission prohibition period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61127251A JPS62284531A (en) | 1986-06-03 | 1986-06-03 | Common radio channel control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61127251A JPS62284531A (en) | 1986-06-03 | 1986-06-03 | Common radio channel control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62284531A true JPS62284531A (en) | 1987-12-10 |
Family
ID=14955427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61127251A Pending JPS62284531A (en) | 1986-06-03 | 1986-06-03 | Common radio channel control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62284531A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08139729A (en) * | 1994-11-08 | 1996-05-31 | Nec Corp | Terminal equipment for radio communication network |
| US7751424B2 (en) | 2003-05-15 | 2010-07-06 | Mitsubishi Denki Kabushiki Kaisha | Method and apparatus for packet transmission in carrier-sense-multiple-access network |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52127702A (en) * | 1976-04-19 | 1977-10-26 | Nippon Telegr & Teleph Corp <Ntt> | Mobile station transmission |
-
1986
- 1986-06-03 JP JP61127251A patent/JPS62284531A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52127702A (en) * | 1976-04-19 | 1977-10-26 | Nippon Telegr & Teleph Corp <Ntt> | Mobile station transmission |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08139729A (en) * | 1994-11-08 | 1996-05-31 | Nec Corp | Terminal equipment for radio communication network |
| US7751424B2 (en) | 2003-05-15 | 2010-07-06 | Mitsubishi Denki Kabushiki Kaisha | Method and apparatus for packet transmission in carrier-sense-multiple-access network |
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