JPS58143641A - Radio channel switching system - Google Patents

Abstract

PURPOSE:To switch a radio channel without providing in equipment to perform the transfer of radio channel information between fixed stations mutually, by providing a deciding function for channel switching and sending function of using channel information to a mobile station. CONSTITUTION:A radio circuit control signal modulator/demodulator circuit 14 detects a discriminating signal out of each prescribed channel in a time division multiplex signal as a mobile station 5 moves from a radio circuit zone 10 to 11. Then a reduction of the level of the signal concerning a repeating device 8 and an increment of the level of the discriminating signal fed from a repeating device 9 are detected and transmitted to a circuit characteristic control circuit 16 via a transmission line 17. When the level increment exceeds a specific level, the circuit 16 decides the execution of channel switching. Thus the device 9 sets radio circuits to a master fixed station and the station 5, and the circuit 16 switches the using channel of an audio signal modulator/ demodulator circuit 15. As a result, the channel is switched to the zone 11 from the zone 10.

Description

[Detailed description of the invention]

Jin's invention is mobile sI! In the communication system, the #l line channel switching method, which is necessary when mobile JII 6 moves between wireless zones of fixed base stations, is automatic. Single electric method method l1
M, iPl are shown in Figure 181. 1.2 in the figure indicates a base station, and one of the base stations It is an old base station in the sense that the wireless line is connected to the mobile station ahead of time. It is called a pigeon station, and after two base station meetings, a thin line is established.

[Radio station 41 and 2, which is called a new base station in the sense of unification, @ 5tin line control station 3
The base 41.2 and the arm-line control station 3 are separated by a transmission line 4. 1st base station 1 is called 1 day base station 1 day 1 day base station 6 zone 6 and new base J1 base station 7 is called zone 7. 1 day s#I zone 6 and lIr11III zone 8 have mM*s in the approach of these zones t411irKsm
, 9t;e, the service range of these S-line Im installations 8 and 9 is called tmm sea 710.11.*S zone 6°10.11.7 is sequentially continuous. Here, the wireless relay wires 8 and 90 function sets the S-cell only for the mobile station 5 located within its own S-zone, and the fixed base j11! When a mobile station is present in its own tlak zone, it transmits presence information to the mobile station or black line repeater. It will be done. Furthermore, as this relay device, for example, a time-division signal (B) signal is transmitted for mobile stations, and a several-minute signal is transmitted for base stations.
Considering that the mobile station N6 and the base station have different fIIA line systems, such as the use of individual number enclosing lines, in the conventional automobile iw, a & system, the mobile station 5 is in the wireless zone. [Line 41, and change the cell line from the old group to the sex group 4.
If it becomes necessary to exchange or connect to station 2,
J2 receives the transmitted radio waves from mobile station 5, which is moving, and increases its level. Determined that J/45 is located in own radio zone 7,
No lsIg14I switching is being performed. In this case, the wireless line control station 3 performs actual #AK for determining whether to switch to the S line (b) and controlling 1114 such as switching between the base station and the constant voltage 111m [4]. For this reason, mobile A155 generally does not have a function to detect that it is moving between two 111m adjacent black zones.Therefore, it has a special function as shown in @l-. In the mobile radio system in which mobile station 5 moves from radio zone 10 to radio zone 9, it cannot establish the fact that the mobile station 5 is moving from radio zone 10 to radio zone 9, so it transmits the presence report to middle dmt 19. -For this reason, the mobile station 5 cannot relay the radio waves of the mobile station 5, and the new base station 2 cannot receive the radio waves in any way even though the mobile station 6 is moving into its own wireless zone. 9. No channel switching, t
There will be a problem that ex- cannot be done. What happened to the box?
For mobile stations that want to use wsi + channel cutting, the mobile station's movement state I) Lt + 't' joint scissor is finally detected, and the black edge channels used in each S-zone are mutually connected.
It is necessary to prevent this from occurring.
If you set up a base station and one function in each relay IIi! 1/# for collective control of the warehouse's radio waves, etc.
There was a drawback that IMIJIII had to be provided. 〈The scene of the discovery〉 In order to solve the JlI problem, this invention has a mobile station with a convenient function for channel switching, so that it can transfer the channel information in use from the base station in the old S11 zone to the base station in the Shinyontoga zone.
(for transmission to the base station).
- That is, when the II moving station moves to the focal line zone, the # of the base/four forces! As the signal level increased, the Shinsei Tsumugi zone [line 11, 9, and t 4" J Ilr L in MIJs 6 itself, the channel t ** which is being added between the old base station and the mobile station Keyaki kim himself is a spear rIh
Send it to the j161 station, and set the llr base station to a channel that does not interfere with that channel. The mobile station 6 has a mobile station antenna 12, a transmitting/receiving common 613, a radio line control signal modification circuit 14, a modification circuit 14, a modification circuit 15, and a transmission III.
IIm circuit 16, variable-1 path 14° 16 and 11 (b)
It has a beak axis signal transmission line 17 that connects the line 16,
Transmission signal i route IT between circuit 14.15 and transmitter/receiver common controller 3
x, uke@Yugohaji 1 kx. The mobile station S is initially located in the unconnected line zone 10 of the relay tube 8, and the relay tube 9 gradually increases to 71 points in a situation where the middle 41 ring (18) is tightly closed. No-time bite-7
In 11, I will explain the actions performed by the moving hoe as follows: ・The mobile station and the middle part II! Channels in the time-division multiplex communication system [select calls and II
It is used for sending signals. First, goose-1g1
As you move from the edge zone lOη to the wireless line zone 11, sW1 times - 匍' 伽 individuated number changes--Ayu 14 is a false number that separates each relay device. Rita'4! n* are sent out from each of the "r motion" bait channels, and among these, the signal level of the signal level related to Nakayuzuka 11gK is small, and #11 is sent out from Shinbata Tetsukame 9! An increase in the individual signal level is detected at t, and is transmitted to the one-way control circuit 16 via this clear*mt clear axis signal transmission line 17t. When this increasing amount exceeds a certain value, the circuit characteristic control @(9) @16 decides to execute channel history writing. When it is decided to perform this channel switching,
- route 16 sends out the 1IIJ control signal [through the control channel] to the middle am station 8 via the non-11 line control signal modulation circuit 14, and the #@-channel currently being used by the relay device 8, that is, The communication channel currently in use (one channel of the time-division multiplex signal > 1) is requested to transfer the full information indicating the communication channel currently in use. Wireless channel Kiyoshi@
Send I through the III control channel. Therefore, the mobile station 5 receives the received channel in the wireless zone 10 and relays it through the control channel &1lc9.
If it is the 4th record n of the station code of this melit station 5, the same #PK is also sent out for the purpose of requesting a channel switch. Then, the relay device 9 connects the mobile station 5
According to the channel switching request from the mobile station 5, the mobile station 5 determines the special call channel (one of the time-division multiple call channels) to be used. Here, as this channel, a new communication channel is given to the mobile station 5 in order to counteract the connection channel that is not currently used by the middle-class turtles 8 and 9. The outbreak is halted on the road. When Nakomate Tetsuji 9 decides on the communication channel to be given to the JJ station 5Ktq, it establishes a #l connection (B) on behalf of mobile station 5 to a fixed pigeon field of 9 parent and mobile station 6. The transmission/reception (ro) route of the call channel added as a circuit for @ (physically moved) and the channel that is related to the call channel set for the anti-riot Asahi station in the old relay jealousy WL8 is used to operate the transmission/reception (b) path for the base station, and then the operation of continuing the 11ii oil line is performed. Next, Nakabaku Soji 9 instructed the channel 5 to switch to a thin line, and by receiving this instruction, P Tsumugi Ayu Register side Mitsumugi 16 audio 48
No. tear wound - The pigeonhole channel tIWI used by the number 15 is cut by the operation of 0 or more in 4L! f! ll
The switching of the lh story f'r channel from l1 zone 10 to xl is performed smoothly. The above operation Ki? Each call channel and each relay i!
The signal system used for the control signal channels set between the turtle and the mobile station is not only the signal channel of the time division multiplex signal system, but also each channel of the number division multiplex signal system. You can also do that. As mentioned above, this invention was applied when using a relay @ station at the base station, but the mobile station 5 set up an I-connection wireless line with Aan P41 without using the relay station. Base 1#A from the state! This invention can also be applied when directly setting IIJ2 and a wireless cell. As explained above, in this invention, the mobile station itself determines the wireless channel status associated with the transition to the wireless zone, and also determines the status of the wireless channel being used in the source wireless zone to the round station in the destination S41 zone. Since it has the function of transmitting radio channel information, it has the advantage of being able to perform black line channel switching without providing equipment such as signal paths for transmitting and receiving radio channel information between radio stations. 4 emrIof) s6 led BE14 Joint 1 diagram is a diagram showing an example of the round tightening configuration of the moving black edge system, which is composed of the conventional automatic IIIL electric hook system and a single-function relay device, w! ,
FIG. 2 is a block diagram showing an example of the structure of a mobile station used in an embodiment of the present invention. 1: IEl base station, 2: Kasuri Kabuto station, 3: Non-unilateral control station, 4: Transmission line, 5: IELE [1 station, 6: Mountain base) 4m
s zone, 7: trim < m-zone, 8.9 = no wire, medium glaze, 10, 11: wireless zone corresponding to no relay shell straight 8 and 9, 12: φkJ field antenna, 13: transmission/reception Shared l4: fi4*taivlU control signal f
(Im! 1, 11 circuits, 15: Sosei signal has a flawed logic circuit, l
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Claims (1)

[Claims] (1) Movement 54 consisting of a fixed landing site and a mobile station
On one side, a wireless link S is connected between one fixed base station and one mobile station, and the mobile station is connected to the fixed base station of the mother-in-law's fixed base station, which is class K11 at the one fixed base station. No wf to cover! When the 1st zone KM moves,
Information is transmitted between a device that receives a specific identification signal sent from each fixed landing site and the fixed landing site. The mobile station is equipped with a trowel that receives ta, and when the mobile station receives the identification signal of m Australia constant arrival jllllj4, it is necessary to switch the aS channel! 411I, and the S mobile station self-I clears the fixed channel used between the old fixed number pigeon station and the new one.
Transmit to the base station and set up a new channel between the new base station and the mobile station. A square line channel cutout method that allows you to select a fixed pigeon landing station such as channel t*, and makes it possible to select a fixed pigeon station.