JP3442654B2 - Mobile communication network controller - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base station which controls and communicates with a mobile unit within a fixed zone via a wireless line, and a switching network which reaches an optimum base station for the mobile unit. In a mobile communication network consisting of crossover exchanges that sets an appropriate communication path, moves when transferring information such as voice and data as fixed-length or variable-length packets or ATM cells having fixed header information. The present invention relates to a body communication network control device.

[0002]

2. Description of the Related Art FIG. 19 is a block diagram showing a conventional mobile communication network control device disclosed in, for example, Japanese Unexamined Patent Publication No. 5-91555.
3 is a wireless zone, 101-1 to 101-3 are base stations forming the wireless zones 100-1 to 100-3, 103 is a mobile station, and 104 is a crossover exchange for controlling the base stations 101-1 to 101-3. It is a station. Here, the mobile device 103
Communicates with the base stations 101-1 to 101-3 while switching the communication channel.

Next, the operation will be described. Mobile device 103
When moving while communicating with the existing zone base station 101-1, the surrounding zone base stations 101-2, 101-
Reserve 3 communication channels. Further, when the channel is switched by detecting the deterioration of the communication quality of the existing zone base station 101-1, the channel is switched to the reserved channel of the peripheral zone base station 101-2 or 101-3.

[0004]

Since the conventional mobile communication network control device is configured as described above, the zone base station 101-1 in the visited zone moves to the base station 101-2 or 101-3 in the destination zone. There is a problem that communication information is lost due to the connection switching process. In particular, when voice or data information is transmitted at high speed in the form of packets or ATM cells, the amount of information lost due to the loss of packets or ATM cells is remarkable, and the mobile device 103 moves at high speed. However, there is a problem in that when switching is performed or when the zone area is set to be small, switching processing frequently occurs, which causes a great deterioration in communication quality.

The present invention has been made in order to solve the above problems, and in high speed communication, high speed movement and switching control in a mobile communication network having a narrow zone area, communication from a crossover exchange to a base station is performed. An object of the present invention is to obtain a mobile communication network control device that prevents loss of communication information due to path switching.

[0006]

A mobile communication network control device according to the present invention is applied to a mobile device and a crossover switching center.
Is a normal mode when the mobile device is in the zone.
And the mobile device escapes from the zone and the handover
The handover mode that is likely to occur
Having a mobile device, the mobile device can escape from the zone
Zone movement detection means to detect whether or not
In the mode, the zone movement detection means detects
If you determine that you are likely to escape from
To the crossover exchange to inform the zone escape notice
Is sent and the mobile station is placed in handover mode.
Zone exit notice message notification means and handover
To over mode at the time, visited zone detection by zone movement detection means
If it is determined that the
If you send a zone settlement message to the
The zone fix message to put the mobile in normal mode.
Equipped with intelligent means, the crossover exchange will exit the zone
Respond to receipt of advance notice messages and zone settlement messages
Recognize the handover mode or normal mode,
In the handover mode, the multipath connection setting
By means of a fixed means,
Peripheral zone Multipath connection to mobile station via base station
The identification information adding means sets the
Packets flooded to the Chipas connection
Identification information indicating that they are the same is added to the packet, and the packet
Via mobile station zone zone base station
Except multi-zone connection via peripheral zone base stations
Delays the packets transferred over the network, and in normal mode,
With the multipath connection setting means,
Setting a connection only to the mobile station via the
The identification information adding means attaches the identification information to the packet.
It is to stop the addition.

A mobile communication network control apparatus according to the present invention is
The crossover switching center has a first communication quality storage means for storing communication quality of whether a packet loss is strictly requested or a packet delay is strictly requested for each connection addressed to the mobile device, In the handover mode, if the communication quality required for the connection is severe against packet loss, the packet delay means
It delays the packet transferred on the multipath connection via the peripheral zone base station, and stops the packet delay by the packet delay means when the communication quality required for the connection is strict against the packet delay.

A mobile communication network control apparatus according to the present invention is
The mobile device is provided with buffer means for accumulating received packets, and packet extracting means for arbitrarily adjusting the extraction time interval of the packets accumulated in the buffer means.

A mobile communication network control apparatus according to the present invention is
The mobile device has second communication quality storage means for storing communication quality indicating whether to connect the buffer means and the packet extracting means for each connection, and the buffer means and the packet extracting means have the second communication for each connection. The connection is made based on the quality storage means.

A mobile communication network control apparatus according to the present invention is
The mobile device is equipped with a destination zone prediction unit that measures the signal status received from the zone base station and the surrounding zone base station and predicts the destination zone.The zone departure notice message notification unit is the zone departure notice message. , The destination zone predicted by the destination zone prediction means is added to the crossover exchange, and the crossover exchange exchanges the multipath connection according to the destination zone in the received zone exit notice message. Is to determine the peripheral zone to be set.

A mobile communication network control apparatus according to the present invention is
The mobile device and the base station are provided with position information receiving means for receiving the position information of the mobile device and the base station by a position measurement system such as GPS, and the base station is within the zone of the base station based on the received position information. Of the mobile station, the base station position information message notifying means for notifying the base station position information message indicating the position information of the base station and the effective zone distance, and the zone movement detecting means of the mobile device is configured to receive the received base station position information message. It is determined whether or not there is a possibility of exiting the existing zone according to the position information of the base station and the effective zone distance and the position information of the mobile device received from the position measurement system.

A mobile communication network control apparatus according to the present invention is
The mobile device and the base station are provided with position information receiving means for receiving the position information of the mobile device and the base station by a position measurement system such as GPS, and the base station, based on the received position information, the base station and the surrounding area. The mobile station of the zone is provided with a base station position information message notifying unit for notifying the base station position information and the base station position information message indicating the effective zone distance. When it is detected that there is a high possibility of exiting, the destination zone is determined according to the position information of the base station and the effective zone distance of the received base station position information message and the position information of the mobile device received from the position measurement system. This is to predict and add the predicted destination zone to the zone exit notice message and transmit it to the crossover exchange.

A mobile communication network control apparatus according to the present invention is
The mobile device and the base station are provided with position information receiving means for receiving the position information of the mobile device and the base station by a position measurement system such as GPS, and each base station is based on the received position information and is located in the surrounding zone base station. A base station position information message indicating the position information of the base station and the effective zone distance to the mobile station and a base indicating the position information of the base station and the peripheral zone base station and the effective zone distance to the mobile device in the existing zone. A base station position information message notification means for notifying a station position information message is provided, and the zone movement detection means of the mobile device receives the received base station when the mobile device detects that there is a high possibility that the mobile device will leave the zone. The location information of the base station and the surrounding zone base station in the location information message and the effective zone distance and the location information of the mobile station received from the position measurement system are used. Predicting a destination zone Te, the zone escape notice message, and transmits the cross-over switching station by adding the predicted destination zone.

A mobile communication network control apparatus according to the present invention is
Based on the position information of the base station of the zone that has passed through according to the received base station position information message, the mobile device moves in the zone in which the mobile device moves and the position measurement system such as GPS detects the position of the mobile device. Equipped with a moving direction recognition means for recognizing the moving direction of the mobile device from the continuity with the moving direction of the mobile device in the visited zone based on the position information. When it is detected that there is a high possibility of exiting, the destination zone is predicted according to the moving direction of the mobile device recognized by the moving direction recognition means, and the predicted destination zone is added to the zone escape notice message. To the crossover exchange.

A mobile communication network control apparatus according to the present invention is
Based on the position information of the base station in the zone that has passed through according to the received base station position information message, the mobile device moves in the zone in which the mobile device moves and the position measurement system such as GPS detects the position of the mobile device. Equipped with a moving speed recognition means for recognizing the moving speed of the mobile device from the continuity with the moving speed of the mobile device in the visited zone based on the position information, the zone movement detection means of the mobile device is When it is determined that the escape rate is high and the moving speed recognized by the moving speed recognizing means is high, the moving destination adjacent to the in-zone is determined according to the moving direction of the mobile device recognized by the moving direction recognizing means. Predict the destination zone adjacent to the destination zone by the zone and subsequent movement,
This is to add the predicted destination zone to the zone exit notice message and send it to the crossover exchange.

A mobile communication network control apparatus according to the present invention is
The mobile unit recognizes the moving direction and the moving speed of the mobile unit in the zone in which the mobile unit is located based on the position information of the mobile unit based on a position measurement system such as GPS, and the mobile unit information about the moving direction and the moving speed of the mobile unit. Mobile unit information message transmitting means for transmitting to the crossover exchange as a message,
When it is detected that a mobile station is likely to leave the zone, it is sent to the crossover exchange as a zone departure notice message that includes the direction and speed of movement of the mobile station in the zone. The crossover switching center is provided with a message notification means, and the crossover switching center moves in accordance with the received mobile unit information message, the moving direction and the moving speed of the mobile unit, and in accordance with the received zone exit notice message, the moving direction and the moving direction of the mobile unit. Based on the speed, the continuity of the moving direction and the moving speed, it is judged whether the moving speed is high, and when it is judged that the moving speed is high, the destination zone adjacent to the existing zone according to the moving direction of the mobile device And the subsequent movement to predict the destination zone adjacent to the destination zone and set the multipath connection according to those destination zones It is intended to determine the peripheral zone should be.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below. Embodiment 1. 1 is a block configuration diagram showing a mobile communication network control apparatus according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 1 denotes setting of an appropriate communication path of a mobile switching network leading to a base station for mobile devices. The crossover exchange station 2 which performs is a base station which controls and communicates with the mobile unit within a certain zone via a wireless line, and among them, 2-1 is a zone in which the mobile unit is communicating. Base stations 2-2 and 2-3 are peripheral zone base stations in which mobile units may move. Reference numeral 3 denotes a mobile device that continues communication by handover control (switching control) when moving between zones in a mobile communication network.

In the crossover exchange 1, 10 is an inter-exchange interface for realizing connection with other exchanges, and 11 is identification information for recognizing that the packets flooded to the multipath connection are the same. Identification information adding means to be added to the packet, 12 is a multipath connection setting means for controlling the setting of the connection to be flooded, and 13 is a packet delay means for holding only the packet of the necessary connection for a certain period of time and then transferring it to the route to the base station. Is. Further, in the mobile device 3, reference numeral 15 is a reception order control means for arranging the order of the received packets by referring to the identification information added to the received packets, 1
Reference numeral 6 is an upper processing means for executing processing while transmitting / receiving data.

FIG . 2 is a sequence diagram showing the operation of the mobile communication network control apparatus according to the first embodiment of the present invention. In the mobile communication network control apparatus shown in FIG. This is a sequence when over control is performed. FIG. 3 is a block diagram showing an example of the identification information adding means of the crossover exchange. In the figure, 20 is a packet buffer for storing packet information, and 21 is a counter means for generating identification information. FIG. 4 is a block diagram showing another example of the identification information adding means of the crossover exchange. In the figure, reference numeral 22 is a clock means having sufficient accuracy to identify packets to be sequentially processed.

FIG . 5 is a block diagram showing an example of the multipath connection setting means and the packet delay means of the crossover exchange station. In the figure, 25 is a connection to the in-zone zone base station 2-1 and a peripheral zone base station. Multipath connection setting control means for controlling the setting of the multipath connection to the connection destined to 2-2, 2-3, and 26 is a packet delay buffer means for delaying the packet of the connection destined for the peripheral zone base stations 2-2, 2-3. , 27 is a transmission processing means for transmitting a packet to each base station 2, 28 is a first packet branching for branching a connection to the zone zone base station 2-1 and a connection to the peripheral zone base stations 2-2 and 2-3 Second means for branching the connection to the plurality of peripheral zone base stations 2-2 and 2-3. A packet branch means.

[0021] Next, the operation will be described. First, the operation of the mobile communication network control device will be described with reference to FIG.
FIG. 1 shows a state in which the mobile station 3 is located in a zone serviced by the in-zone base station 2-1 and is performing communication, and the crossover exchange station 1 managing the mobile station 3 is an adjacent exchange station. Receives a packet addressed to the mobile device 3 through the inter-exchange interface 10. After that, the identification information adding means 1 outputs identification information for recognizing that the packets flooded to the multipath connection are the same.
1 to add the multipath connection setting means 12
The packet is copied for each connection set by. In-zone zone base station 2-1 in which the mobile device 3 is located
The packet for the destination connection is immediately transferred. Further, the packets of the connection destined to the peripheral zone base stations 2-2 and 2-3 in which the mobile device 3 may move are accumulated in the packet delay means 13 for a specified time, and thereafter,
Transfer to each peripheral zone base station 2-2, 2-3 through a connection. Then, the zone-in-zone base station 2-1 and the peripheral zone base stations 2-2 and 2-3 transfer the packet transferred from the crossover exchange 1 to the mobile station 3 through the wireless line. The mobile device 3 receives the packet, recognizes the identification information of the received packet in the reception order control means 15, detects duplicate reception or packet loss that occurs during the handover of this method, and controls the packet in order. , To the upper processing means 16 inside the mobile device 3.

In FIG . 2, the packet sequence in the handover control in which the mobile unit 3 moves from the zone of the existing zone base station 2-1 to the zone of the peripheral zone base station 2-2 in the mobile communication network will be described. When the mobile device 3 is in the zone of the visited zone base station 2-1, the packet (1)
Transferred from the crossover exchange 1 to the visited zone base station 2-1 via a connection (one of multipath connections), and moved from the visited zone base station 2-1 through the radio channel used by the mobile device 3. It is transferred to the machine 3 and received. At the same time, the crossover switching center 1 temporarily holds the packet (1) by the packet delay means 13, and then the connection (destined to the peripheral zone base stations 2-2 and 2-3 where the mobile unit 3 may move ( The packet (1) is transferred to each of the peripheral zone base stations 2-2 and 2-3 through one or more of the multipath connections, and if there is no radio channel to the mobile device 3 in that base station, the packet (1) is discarded. . When the radio channel to the mobile device 3 is established or reserved in the base station, it is transferred to the mobile device 3 through the radio channel used by the mobile device 3.
Similarly, for the continuing packet (2), the existing zone base station 2
It is received by the mobile device 3 via -1.

[0023] After this, the mobile device 3, existing zone base station 2
The communication with -1 is interrupted for reasons such as deterioration of communication quality, and handover control is started to switch to a communication channel with the peripheral zone base station 2-2 having good communication quality. During this time, the wireless communication channel with the existing zone base station 2-1 is released, the wireless communication channel with the peripheral zone base station 2-2 is set, and information is exchanged between the mobile station 3 and the crossover exchange 1. However, it is necessary to perform handover control, and packet communication cannot be performed during the processing time. After the handover control is started in the mobile device 3, the packet (3) is transferred from the crossover exchange 1 to the visited zone base station 2-1 via a connection (one of multipath connections), The data is transferred from the base station 2-1 through the radio channel used by the mobile device 3, but since the mobile device 3 is in the handover control, it is not received and disappears. The subsequent packets (4) and (5) are also transferred to the mobile device 3 via the visited zone base station 2-1 but are not received and disappear. Conventionally, the received packet during the handover control is lost in this way, and the upper layer protocol or the like is used for recovery. However, as the mobile device 3 moves at high speed, handover control becomes more frequent, and at the same time, the communication speed becomes higher, and the number of lost packets increases, which is a major cause of deterioration of communication quality.

In the first embodiment, the packets (1) to (1) transferred to the mobile device 3 via the visited zone base station 2-1.
A packet similar to that of (5) is transferred by a multipath connection from the crossover switching center 1 to the peripheral zone base stations 2-2 and 2-3 after a certain delay time by the packet delay means 13. is doing. The mobile device 3 ends the handover control, and moves to the destination zone base station (peripheral zone base station before handover) 2-2.
Set the communication channel with and start communication. afterwards,
The packet (2) delayed by the packet delay means 13 of the crossover exchange 1 is the destination zone base station 2-
It is transferred to the mobile device 3 via 2 and received. Mobile unit 3
The reception order control means 15 refers to the identification information of the received packet, recognizes that the packet has been received from the located zone base station 2-1, and discards it as a duplicate packet. Next, the packets (3) to (5) delayed by the packet delay means 13 of the crossover exchange 1 are transferred to the mobile station 3 via the destination zone base station 2-2 and received. The mobile station 3 refers to the identification information of the received packet by the reception order control means 15, recognizes that the packet is a packet which has been received in the existing zone 2-1 and passes it to the upper processing means 16.

As described above, the multipath connection from the crossover switching center 1 to the peripheral zone is set, and the packets are delayed and transferred, thereby preventing packet loss due to handover control and continuing high-quality communication. it can.

[0026] Next will be described the identification information adding means 11 shown in FIG. The crossover switching center 1 has a counter means 21 having an appropriate size as a means for generating the identification information added to the packet. When a packet addressed to the mobile device 3 is received, the received packet is stored in the packet buffer 20, the counter value by the counter means 21 is written in this appropriate identification information area, and the counter means 21 is counted up. The packet to which the identification information is added is copied and transferred to each base station by the multipath connection.

As described above, by using an appropriate modulo cyclic variable as the identification information, the duplicate packet in the mobile station 3 can be detected, and at the same time, the lost packet can be detected and the crossover exchange 1 and the mobile station 3 can be detected. It is also possible to utilize it for retransmission control during the period.

[0028] Next will be described the identification information adding means 11 shown in FIG. The crossover exchange 1 has clock means 22 with sufficient accuracy as a means for generating the identification information added to the packet so that the packet received by the crossover exchange 1 can be uniquely identified. When the packet addressed to the mobile device 3 is received, the received packet is stored in the packet buffer 20, and the time information by the clock means 22 is written in this appropriate identification information area. The packet to which the identification information is added is copied and transferred to each base station by the multipath connection.

As described above, by using the time information with appropriate accuracy as the identification information, it is possible to detect the duplicate packet in the mobile device 3 and at the same time, to utilize it for the fluctuation correction process at the time of reproducing the packet. .

[0030] Next, the multi-path connection setting means 12 and the packet delay unit 13 will be described as shown in FIG. The crossover switching center 1 transfers a packet addressed to the mobile station 3 via the existing zone base station 2-1 and one or more peripheral zone base stations 2-2.
The first bucket branching unit 2 for branching two connections of the connection transferred via 2-3
8 to copy the packet. Location Zone Base Station 2-
The packet for connection transferred via 1 is immediately transferred from the transmission processing means 27. Peripheral zone base station 2
The packets for connection transferred via -2 and 2-3 are accumulated in the packet delay buffer means 26 which realizes the packet delay means 13 for a designated time. After that, in order to branch the packet for the connection of the peripheral zone base stations 2-2 and 2-3 according to the number of the peripheral zone base stations 2-2 and 2-3 to be transferred from the packet delay buffer means 26. The second packet branching means 29
To copy the packet. The respective copied packets are transferred from the transmission processing means 27 to the respective destination peripheral zone base stations 2-2 and 2-3. First packet branching means 2
8, whether or not to branch to the connection for the peripheral zone base stations 2-2 and 2-3, and which peripheral zone base station 2
The multipath connection setting control means 25 manages whether to branch to the connections for -2 and 2-3.
The branch control is instructed to the first packet branch means 28 and the second packet branch means 29.

[0031] Thus, by having the first packet branch means 28 and the second packet branch means 29, it is possible to reduce constituting the memory capacity of the packet delay buffer means 26 for realizing the packet delay means 13.

[0032] Embodiment 2. FIG. 6 is an operation flow diagram of the mobile communication network control device according to the second embodiment of the present invention in a normal mode of a mobile device, FIG. 7 is an operation flow diagram of the mobile device in a handover mode, and FIG. 8 is a crossover exchange. FIG. 9 is an operation flow chart of the station in the normal mode, and FIG. 9 is an operation flow chart of the crossover exchange in the handover mode.

[0033] Next, the operation will be described. The mobile device 3
Escape from the current zone, such as when it is stationary in the zone or moving at the center of the zone at low speed, and when it is moving in the normal zone where it is established in the zone and in the boundary area of the zone. It has a handover mode that has a high possibility of occurrence of an over as an internal state, and has zone movement detection means for recognizing that there is a high possibility of exiting the zone in which it is located. Next, the operation when the mobile device 3 is in the normal mode will be described with reference to FIG. When the mobile device 3 is in the normal mode, the zone movement detection means determines the possibility of exiting the zone (step ST1). When it is determined that the possibility of exit is high, the zone base station 2-1 in the zone is located. A zone escape notice message is notified to the crossover exchange 1 via the route (step ST2, zone escape notice message notification means). After determining that the possibility of exit is not high, or after sending the zone exit message, the crossover switching center 1 recognizes the handover mode depending on whether the identification information of the received packet is significant or insignificant (step ST3). Judge whether or not. When the identification information is significant and the crossover exchange 1 recognizes the mobile station 3 in the handover mode, the mode of the mobile station 3 is shifted to the handover mode (step ST4). If the identification information is insignificant, the normal mode remains unchanged.
When stopping in the normal mode, it is also effective to prevent frequent occurrence of the zone escape notice message (step ST2).

[0034] Then the mobile device 3 will be described with reference to FIG. 7 the operation when the handover mode. The zone movement detection means determines the possibility of exiting the zone (step ST1).
1) If there is no possibility of escape and it is determined that the zone is fixed, a zone fixation message is notified to the crossover exchange 1 via the zone base station 2-1 in the area (step ST12, zone fixation message notifying means). Whether the crossover switching center 1 recognizes that it is in the handover mode depending on whether the possibility of exit is high or after the zone fixing message is transmitted and whether the identification information of the received packet is significant or insignificant (step ST13). Determine whether or not. When the identification information is insignificant and the crossover exchange 1 recognizes the mobile station 3 in the normal mode, the mode of the mobile station 3 is shifted to the normal mode (step ST1).
4). If the identification information is significant, the handover mode remains unchanged. In case of stopping in the handover mode, notification of zone fixing message (step ST12)
It is also effective to prevent frequent occurrence of.

[0035] Next, the operation in the cross-over switching station 1 will be described. The crossover exchange 1 has a normal mode in which each mobile unit 3 to be managed is established in the existing zone, such as the mobile unit 3 being stationary in the zone or moving at a low speed in the center of the zone. And has a handover mode as an internal state in which there is a high possibility that a handover will occur when the mobile station 3 moves out of the zone boundary region and a handover occurs. -1, whether to set only the connection via the packet and transfer the packet or to set the multipath connection via the existing zone base station 2-1 and the peripheral zone base stations 2-2 and 2-3 to transfer the packet, It has a multipath connection setting means 12 with a switching function added.
The operation of the crossover exchange 1 regarding the mobile device 3 in the normal mode will be described with reference to FIG. The crossover exchange 1 receives the zone escape notice message from the mobile station 3 in the normal mode (step ST21) and recognizes that the mobile station 3 is likely to escape from the zone in which it is located. Next, the identification information adding means 11 starts adding identification information to the packet addressed to the mobile device 3 (step ST
22). Next, for example, all the adjacent zones of the existing zone are selected as the peripheral zones in which the mobile device 3 may move, and the base stations 2-1 to 2-3 of the existing zone and the peripheral zone are selected.
A multipath connection to the transit mobile station 3 is set (step ST23), and a packet of the connection addressed to the peripheral zone base stations 2-2 and 2-3 is set to be delayed (step ST24), and the mode of the mobile station 3 is set. The handover mode is set (step ST25).

[0036] Next, the operation relating to the mobile device 3 handover mode at the crossover switching center 1 will be described with reference to FIG. The crossover switching center 1 receives the zone fixing message from the mobile station 3 in the handover mode (step ST31), and recognizes that the mobile station 3 has been fixed in the existing zone. Next, the identification information adding means 11 stops adding the identification information to the packet addressed to the mobile device 3 (step ST32). Next, leave only the connection via the existing zone base station of the mobile device 3 at that time,
The multipath connection via the other peripheral zone base stations 2-2 and 2-3 is released (step ST33). Then, the delay set for the corresponding connection is gradually reduced (step ST34), and the mode of the mobile device 3 is set to the normal mode (step ST35).

As described above, in the mobile station 3 and the crossover exchange 1, the normal mode and the handover mode are defined for each mobile station 3, and the multipath connection is made only to the mobile station 3 having a high possibility of handover. Is set to flood the packet, and a normal connection is set to the mobile device 3 in the fixed state in the zone to transfer the packet, thereby reducing the traffic amount in the mobile communication network. Become. Further, in the mobile device 3 according to the second embodiment, the mode transition is determined based on the presence or absence of the identification information added to the packet.
The same effect can be expected by notifying the mode information of the corresponding mobile device 3 recognized by the crossover switching center 1 by means other than the identification information added to the packet and determining the mode transition based on the information.

FIG . 10 is a conceptual diagram showing a communication quality storage table in the crossover exchange. The crossover switching center 1 has, for example, a communication quality storage table (first communication quality storage means) as shown in FIG. 10, and manages each base station, each mobile station located in the base station, and the corresponding mobile station. For each communication connection set in the mobile device, the communication quality required by the connection is stored. For example, in terms of communication quality, in the ATM communication service class, a delay is tolerable, but loss is severe U
It is possible to use the communication quality of BR, nrtVBR, or rtVBR and CBR that are more strict against delay than loss.

[0039] Next, the operation will be described. 6 to 9
As described in the description of the operation, when the crossover switching center 1 defines the normal mode and the handover mode and realizes the communication by the multipath connection to the mobile station 3 in the handover mode, the communication quality storage is performed. The connection type to be applied is individually selected by referring to the table according to the required communication quality of the communication connection of the corresponding mobile device.
For example, the multipath connection setting unit 1 is configured to transfer packets by using a multipath connection including delay for a connection with severe communication quality against loss.
2 is operated. Further, for a connection having a communication quality that is strict with respect to delay, the multipath connection setting means 12 is operated so as to transfer a packet using a multipath connection that does not include delay, or communication using a normal connection is performed. continue.

As described above, a connection that is effective against packet loss and a connection that has a strong real-time property but may cause packet loss can be selected depending on the communication quality required for the connection. Thus, it is possible to provide the communication quality required by the connection even during handover control.

FIG . 11 is a sequence diagram showing packet extraction processing at the time of handover control in the mobile device. In FIG. 11, reference numeral 41 denotes a buffer (buffer means) provided in the mobile device 3 for accumulating received packets, and the mobile device 3 has a packet extraction means for adjusting the packet extraction time interval from the buffer 41.

[0042] Next, the operation will be described. After the mobile station 3 transmits the zone departure notice message and shifts to the handover mode, the packet with the identification information received from the crossover exchange 1 is accumulated in the buffer 41 of the mobile station 3. At the same time, a value TL that is larger than the average packet reception interval T is set as the extraction time interval of the packet extraction unit that extracts the accumulated packets from the buffer 41 at the specified time interval, and is normally set within a range allowable for the external device 40. Transfer packets at a larger interval than in mode. In this way, when the mobile device 3 enters the handover mode, the received packets are gradually accumulated in the buffer 41. When the accumulated amount is monitored and the amount exceeds a certain amount, the extraction interval TL of the packet extracting unit is reduced and the accumulation is performed. When the amount is small, the take-out interval TL is increased, and the take-out interval is adjusted within a range allowable for the external device 40. After the mobile unit 3 transmits the zone fixing message and shifts to the normal mode, a value TS smaller than the average packet reception interval T is set as the extraction time interval of the packet extraction unit that extracts the accumulated packet from the buffer 41, Packets are transferred at intervals smaller than the normal mode within an allowable range for the external device 40. After that, when there are no more packets stored in the buffer 41,
The accumulation of the received packet in the buffer 41 is stopped, and the received packet is transferred to the external device 40.

As described above, when the mobile device 3 is connected to the external device 40 which is not suitable for the packet burst arrival,
When communication is performed with the upper processing means 16 that does not match the arrival of packets in the mobile device 3, the burstiness of packet traffic associated with handover control can be mitigated.

[0044] Further, the packet from the buffer 41, and buffer 41 providing a communication quality table for storing the communication quality of each connection using the mobile station 3 (second communication quality storage means) stores the received packet The operation when a plurality of packet extraction units capable of adjusting the extraction time interval are provided will be described. When the mobile device 3 enters the handover mode, it refers to the communication quality table and allocates the buffer 41 and the packet extracting unit for each connection that does not conform to the burst property.

As described above, the packets can be delivered to the external device 40 or the internal upper processing means 16 at individual extraction intervals suitable for the connection.

[0046] Embodiment 3. FIG. 12 is a conceptual diagram showing a format of a zone escape notice message according to the third embodiment of the present invention. In the figure, reference numeral 50 is a zone escape notice message notified from the mobile unit 3 to the crossover exchange 1. FIG. 13 is a conceptual diagram showing an example of the format of a base station position information message according to Embodiment 3 of the present invention. In the figure, reference numeral 51 indicates the location information notified from the serving zone base station 2-1 to the mobile device 3. It is a base station position information message of the zone zone base station 2-1. FIG. 14 is a conceptual diagram showing another example of the format of the base station position information message according to the third embodiment of the present invention, in which 52 is notified from the located zone base station 2-1 to the mobile device 3. A base station position information message including position information of the existing zone base station 2-1 and surrounding zone base stations 2-2 and 2-3, and 53 is detailed information of each base station information.

[0047] Next, the operation will be described. First, FIG.
The operation will be described based on the zone escape notice message shown in FIG. The mobile device 3 has a function of measuring the reception level of the radio wave from the in-zone base station 2-1. In addition, from the located zone base station 2-1 to the surrounding zone base stations 2-2 and 2
The frequency of the radio wave from -3 is notified, and it has a function of measuring the reception level. By using this function, it is possible to judge the zone exit due to the deterioration of the reception level of the zone in which it is located, and at the same time, to predict the surrounding zone that is likely to move based on the measured reception level of the surrounding zone (destination zone prediction means). . Therefore, when the mobile device 3 determines that there is a high possibility of leaving the zone and notifies the crossover exchange 1 of the zone exit notice message 50, the mobile device 3 determines based on the measured reception level of the surrounding zone. The crossover switching center 1 is notified of the number of one or more neighboring base stations that are likely to move as an information element of the zone escape notice message 50. The crossover exchange 1 that received the zone exit notice message 50
Sets a multipath connection to the notified peripheral zone base station and executes handover control.

As described above, even if the crossover exchange 1 does not grasp the state of each mobile unit 3 in detail, the function of the mobile unit 3 can be utilized to allow the mobile unit 3 to move mainly. Judging the peripheral zone base stations 2-2 and 2-3 that are highly reliable,
By notifying the crossover switching center 1, it becomes possible to easily set the multipath connection at the time of handover.

[0049] Next, the operation will be described with reference to the base station position information message shown in FIG. 13. Base stations 2-1 to 2-3
And the mobile device 3 uses a GPS (Global Position).
Ionizing System) and the like to receive a signal from a position measurement system and have a function of recognizing position information such as the longitude and latitude of the user (position information receiving means). The base stations 2-1 to 2-3 periodically output the position information such as the longitude and latitude of the in-zone base station 2-1 and the output of the radio wave to the mobile station 3 in the zone periodically or at an appropriate timing. The effective zone distance information such as the direction is notified as the base station position information message 51 (base station position information message notifying means). The mobile device 3 receives the base station location information message 51 from the visited zone base station 2-1, recognizes the location of the visited zone base station 2-1 and the effective zone, and
Recognize your position by the function of recognizing your position information,
Based on these pieces of information, it is determined whether or not there is a possibility of exiting the zone where the vehicle is located (zone movement detection means).

As described above, the mobile device 3 judges the possibility of exiting the zone from the position information of the zone base station 2-1 in the area and the position information of the mobile device 3, so that a temporary disturbance of the radio wave, It is possible to judge the zone escape that is durable against the influence of obstacles.

[0051] Further, the operation will be described on the basis of the base station position information message shown in FIG. 13. Base stations 2-1 and 2
-3 and the mobile device 3 have a function of receiving a signal from the position measurement system and recognizing position information such as longitude and latitude of itself (position information receiving means). Base stations 2-1 to 2-3
Of the base stations 2-1 to 2-3 to the mobile stations 3 in and around the zone periodically or at an appropriate timing.
The location information such as the longitude and the latitude of the mobile station and the effective zone distance information such as the output and direction of the radio wave thereof are notified as the base station location information message 51 (base station location information message notifying means). The mobile device 3 uses the idle time of communication with the existing zone base station 2-1 and uses the surrounding zone base station 2-
It has a function of receiving messages from the peripheral zone base stations 2-2 and 2-3, receives the base station location information message 51 from the peripheral zone base stations 2-2 and 2-3, and receives the peripheral zone base stations 2-2 and 2-3.
Position and effective zone distance information are recognized, the position of the user is recognized by the recognition function of the own position information, and the peripheral zone in which the mobile device 3 may move is predicted based on these position information (zone movement). Detection means). next,
When notifying the crossover exchange 1 of the zone departure notice message, the number of one or more neighboring base stations that are likely to move in the mobile station 3 is used as the information element of the zone departure notice message 50. Notify the over exchange 1. Zone escape notice message 5
Upon receiving 0, the crossover switching center 1 sets a multipath connection to the peripheral zone base station notified by the mobile station 3 and executes handover control.

As described above, the peripheral zone base stations 2-2 and 2-2
By predicting the surrounding zone in which the mobile device 3 may move from the position information of 2-3 and the position information of the mobile device 3, the mobile device is durable against temporary electromagnetic wave disturbance and the influence of obstacles. The destination zone can be predicted, and even if the crossover exchange 1 does not know the state of each mobile unit 3 in detail, the function of the mobile unit 3 can be utilized to allow the mobile unit 3 to move mainly. Determine the surrounding zone base stations that are likely to
By notifying the crossover switching center 1, it becomes possible to easily set the multipath connection at the time of handover.

[0053] Next, the operation will be described with reference to the base station position information message and the base station information shown in FIG. 14. Each of the base stations 2-1 to 2-3 and the mobile device 3 has a function of receiving a signal from the position measurement system and recognizing position information such as its longitude and latitude (position information receiving means). The in-zone zone base station 2-1 compares the free zone zone base station 2-1 with the surrounding zone base stations 2-2 and 2-3 at an appropriate timing.
Base station information 5 consisting of location information such as longitude and latitude of the satellite and effective zone distance information such as output and direction of its radio waves
3 is notified as a base station position information message 51, and the mutual base station information is recognized by the base stations 2-1 to 2-3. For the mobile station 3 located in the zone, the visited zone base station 2-1 has the base station information 53 of the visited zone base station 2-1 and one or a plurality of peripheral zone base station information 5
The base station position information message 52 having 3 is notified (base station position information message notifying means). The mobile device 3 collectively moves from the in-zone zone base station 2-1 to the in-zone zone base station 2-.
The base station information 53 of the base station 1 and the peripheral zone base stations 2-2 and 2-3 is recognized, and is used for determining the possibility of exiting from the existing zone and predicting the movement destination zone (zone movement detection means).

As described above, the mobile station 3 collects the base station information 53 of the existing zone base station 2-1 and the peripheral zone base stations 2-2 and 2-3 from the existing zone base station 2-1. The base station information 53 can be obtained and the base station information 53 can be easily obtained. Further, even if a position measuring system is not provided for measuring position information such as latitude and longitude of the base station, it is preset in the base station and the base station information 53 including the position information is set.
The same effect can be obtained by mutually notifying each other.

[0055] Embodiment 4. FIG. 15 is an explanatory view showing a moving direction of a passage zone and a moving direction in a visited zone of a mobile device according to a fourth embodiment of the present invention. In the figure, 60-1 and 60-2 indicate that the mobile device 3 passes through. The reference numeral 61 is a base station of the zone, and 61 is a passage zone moving direction that can be recognized from the passage zone of the mobile device 3.
In the visited zone, 3-1 is the position of the mobile device 3 at time T1, 3-2 is the position of the mobile device 3 at time T2 thereafter, 62 is the moving direction in the visited zone, and 63 is It is the predicted movement direction. FIG. 16 is an explanatory diagram showing the moving speed of the passage zone and the moving speed of the inside zone of the mobile device according to Embodiment 4 of the present invention. In FIG. It is the moving speed of the passing zone. In the visited zone, 66 is the moving speed in the visited zone, 2-4, 2-
Reference numeral 5 denotes a second-step movement-destination zone base station in which the mobile device 3 may move in the second step following the movement to the peripheral zone.

[0056] Next, the operation will be described. First, FIG.
Prediction of the movement-destination base station from the movement direction will be described based on. The base stations 2-1 to 2-3 and the mobile device 3 have a function of receiving signals from the position measurement system and recognizing position information such as their longitude and latitude (moving direction recognition means). Base station 60 in the zone that mobile unit 3 has passed through
-1, 60-2, by receiving the base station position information message 52, etc., the pass-zone base stations 60-1, 60-2
The moving direction 61 of the passing zone so far is recognized including the position information of the existing zone base station 2-1 (moving direction recognition means). In addition, the mobile device 3 periodically recognizes its own position information by the position measurement system, and detects the position of the mobile device 3-1 at time T1 and then the position 3-2 of the mobile device at time T2. The moving direction 62 in the zone is recognized (moving direction recognition means). The continuity of the moving direction 61 of the passage zone of the mobile unit 3 and the moving direction 62 of the in-zone is determined, and when the continuity is recognized, the surrounding zone base station 2-2 which is predicted by the predicted moving direction 63 , 2-3 are added, and are added to the zone escape notice message 50 as predicted destination base stations and notified to the crossover exchange 1 (zone movement detecting means).

As described above, the destination base station of the multipath connection set in the crossover exchange 1 is limited based on the destination base station information predicted by the continuity in the moving direction, and the multipath accompanying the handover control is limited. The traffic due to the connection can be reduced.
This is highly effective when moving along with a vehicle that moves continuously in a certain direction, such as a train or an automobile running on a main road.

[0058] Next, the prediction of the target base station from the moving speed will be described with reference to FIG. 16. In addition to the prediction of the moving direction shown in the operation description of FIG. 15, the mobile device 3 recognizes the moving speeds 65-1 and 65-2 in the zones that have passed through. Further, the mobile device 3 periodically recognizes its own position information by the position measurement system, and the position 3-1 of the mobile device 3 at time T1 and the position 3-2 of the mobile device 3 at time T2 thereafter, Moving speed in the zone 6
6 is recognized (moving speed recognition means). The continuity of the moving direction 61 of the passage zone of the mobile device 3 and the moving direction 62 of the inside zone is judged, and if the continuity is recognized, the surrounding zone base station 2-
Limit 2, 2-3. In addition, the continuity of the moving speeds 65-1 and 65-2 of the passing zone of the mobile device 3 and the moving speed 66 of the inside zone is determined, and when the continuity is recognized and the moving speed is high, After moving to the peripheral zone base stations 2-2 and 2-3 predicted by the moving direction, the movement-destination zone base stations 2-4 that may move after the second step
Predict 2-5. In the case of the mobile device 3 which continues to move at high speed in this way, in addition to the peripheral zone base stations 2-2 and 2-3 predicted by the moving direction, the destination zone base stations 2-4 and 2-4 after the second step are also added. 2-5 as a movement-destination base station,
It is added to the zone exit notice message 50 and notified to the crossover exchange 1 (zone movement detecting means).

As described above, even if the moving speed is high, the destination base of the multipath connection set in the crossover switching center 1 based on the moving base station information predicted from the moving direction and the continuity of the speed. It is possible to limit the number of stations to reduce traffic and prevent packet loss due to frequent handovers. This is used when moving with vehicles that move continuously at high speed with a certain direction, such as airplanes, trains, and high-speed vehicles running on highways, and when the zone radius is small and frequent handovers are required. Highly effective.

FIG . 17 is a conceptual diagram showing the format of a movement information message according to the fourth embodiment of the present invention.
In the figure, reference numeral 70 denotes a mobile unit information message which notifies the crossover exchange 1 of the moving direction and the moving speed in the zone in which the mobile unit 3 is located. FIG. 18 is a conceptual diagram showing a format of a zone escape notice message according to the fourth embodiment of the present invention. In the figure, reference numeral 71 indicates a crossover by adding information on the moving direction and the moving speed in the zone in which the mobile device 3 is located. It is a zone escape notice message to be notified to the exchange 1.

[0061] Next, the operation will be described. Base station 2-1
~ 2-3 and the mobile device 3 have a function of receiving a signal from the position measurement system and recognizing position information such as longitude and latitude of the user. The mobile device 3 recognizes its own position information, for example, periodically by the position measurement system, and detects each position by the position 3-1 of the mobile device 3 at time T1 and the position 3-2 of the mobile device 3 at time T2 thereafter. The moving direction and the moving speed in the coverage zone are notified to the crossover exchange 1 as a mobile device information message 70 (mobile device information message transmitting means). The crossover exchange 1 that has received the mobile unit information message 70 stores the moving direction and the moving speed of each mobile unit 3 in each pass zone.
The mobile device 3 has the passing zone base stations 60-2 and 60-1.
If it is determined that the vehicle is in the zone of the in-zone zone base station 2-1 and is likely to escape from the in-zone zone, the information on the moving direction and the moving speed in the in-zone zone is added. Zone escape notice 71
Is generated and notified to the crossover exchange 1 (zone escape notice message notification means). In the crossover exchange 1, the moving direction 61 and the moving speed 65 of the pass zone held by the crossover exchange 1 with respect to the corresponding mobile device 3
-1, 65-2 and the moving direction 62 and moving speed 66 of the existing zone notified by the zone escape notice message 71, it is possible to judge the continuity of the moving direction, the continuity of the moving speed, and whether or not the moving is high speed. Then, as shown in the operation of FIG. 16, the peripheral zone base stations 2-2 and 2-3 to which the multipath connection should be set, and the movement-destination zone base stations 2-4 and 2-5 after the second step are determined. To do.

As described above, even if the crossover switching center 1 is constructed so as to recognize the moving direction and moving speed of each mobile unit 3, the same effect as the structure shown in FIG. 16 can be expected.

In the above embodiment, the functions of the crossover switching center 1 and the base station 2 are separated by the crossover switching center 1 and the base station 2, respectively, but the crossover switching center 1 is explained. Even if the mobile communication network control device is configured by the configuration having both functions of the base station 2 and the base station 2, the same effect can be obtained.

[0064]

As described above, according to the present invention, the movement
Mobile station and crossover switching center
Define normal mode and handover mode, and
Multicast only to mobiles with high bar probability
Set up a connection, flood the packets, and
For a mobile unit that has been fixed on
Settings to transfer packets and transfer traffic within the mobile communication network.
The effect of reducing the amount of hicks can be obtained.

[0065] According to the present invention, the communication quality required in connection with a valid connection to the packet loss, but real-time strong connection of potential packet loss, to be able to select Therefore, it is possible to provide the communication quality required by the connection even during the handover control.

[0066] According to the present invention, when performing communication and case of connecting an external device that does not conform to the burst arrival of packets to the mobile station, and the host processing unit incompatible with burst arrival of the moving machine of the packet, the handover control The effect of being able to mitigate the packet traffic burstiness associated with the above is obtained.

[0067] According to the present invention, an external device or incompatible packets to burstiness of individual extraction interval suitable for each connection, the effect that can be passed to the interior of the host processing unit is obtained.

[0068] According to the invention, without cross-over switching center to grasp the state of each mobile station in detail, utilizing the functions of the mobile station, are likely to move the mobile device becomes mainly By determining the peripheral zone base station and notifying it to the crossover switching center, it is possible to easily set the multipath connection at the time of handover.

[0069] According to the invention, by the positional information of the existing zone base station and the mobile unit from the location information of the mobile device to determine the likelihood of zone escape of disturbance or temporary waves, the influence of the obstacle The effect of being able to judge the zone escape with durability is obtained.

[0070] According to the present invention, predicts the peripheral zone that might position the peripheral zone base station information and the mobile unit from the location information of the mobile device is moving, temporary radio wave or disturbance, the influence of the obstacle It is possible to predict the destination zone with high durability, and even if the crossover exchange does not understand the state of each mobile unit in detail, the function of the mobile unit can be used By determining the peripheral zone base station that is highly likely to move and notifying the crossover switching center, it is possible to easily set the multipath connection at the time of handover.

[0071] According to the present invention, the mobile station can obtain the base station information collectively from existing zone base station existing zone base station and the adjacent zone BS, is possible to simplify the availability of the base station information The effect that can be obtained is obtained.

[0072] According to the present invention, based on the target base station information predicted by the continuity of the movement direction, to limit the destination base station of a multi-path connection to be set at the crossover switching center, multipath due to handover control It is possible to reduce the traffic caused by the connection. This is highly effective when moving along with a vehicle that moves continuously in a certain direction, such as a train or an automobile running on a main road.

[0073] According to the invention, also the moving speed is a high speed, based on the target base station information predicted by continuity of the moving direction and speed, the destination base multipath connection to be set at the crossover switching center This has the effect of limiting the stations to reduce traffic and preventing packet loss due to frequent handovers. This is used when moving with vehicles that move continuously at high speed with a certain direction, such as airplanes, trains, and high-speed vehicles running on highways, and when the zone radius is small and frequent handovers are required. Highly effective.

[0074] According to the present invention, obtained as a cross-over switching center recognizes the movement direction and movement speed of the mobile station, as well as reduce traffic, the effect capable of preventing packet loss due to handover frequent To be This is used when moving with vehicles that move continuously at high speed with a certain direction, such as airplanes, trains, and high-speed vehicles running on highways, and when the zone radius is small and frequent handovers are required. Highly effective.

[Brief description of drawings]

FIG. 1 is a block configuration diagram showing a mobile communication network control device according to a first embodiment of the present invention.

FIG. 2 is a sequence diagram showing an operation of the mobile communication network control device according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing an example of identification information adding means of a crossover exchange.

FIG. 4 is a block diagram showing another example of the identification information adding means of the crossover exchange.

FIG. 5 is a block diagram showing an example of multipath connection setting means and packet delay means of the crossover exchange.

FIG. 6 is an operation flow chart in a normal mode in a mobile device of the mobile communication network control device according to the second embodiment of the present invention.

FIG. 7 is an operation flow diagram in a handover mode in a mobile device.

FIG. 8 is an operation flow diagram in a normal mode in the crossover exchange.

FIG. 9 is an operation flowchart of the crossover exchange in the handover mode.

FIG. 10 is a conceptual diagram showing a communication quality storage table in a crossover exchange.

FIG. 11 is a sequence diagram showing a packet extraction process at the time of handover control in the mobile device.

FIG. 12 is a conceptual diagram showing a format of a zone escape notice message according to a third embodiment of the present invention.

FIG. 13 is a conceptual diagram showing an example of a format of a base station position information message according to the third embodiment of the present invention.

FIG. 14 is a conceptual diagram showing another example of the format of the base station position information message according to the third embodiment of the present invention.

FIG. 15 is an explanatory diagram showing a moving direction of a passage zone and a moving direction of a mobile station according to a fourth embodiment of the present invention.

FIG. 16 is an explanatory diagram showing a moving speed in a passing zone and a moving speed in a visited zone of a mobile device according to a fourth embodiment of the present invention.

FIG. 17 is a conceptual diagram showing a format of a movement information message according to the fourth embodiment of the present invention.

FIG. 18 is a conceptual diagram showing a format of a zone escape notice message according to the fourth embodiment of the present invention.

FIG. 19 is a block diagram showing a conventional mobile communication network control device.

[Explanation of symbols]

1 crossover exchange station, 2-1 existing zone base station, 2-2, 2-3 peripheral zone base station, 3 mobile station,
11 identification information adding means, 12 multipath connection setting means, 13 packet delay means, 15 reception order control means, 21 counter means, 22 clock means, 26
Packet delay buffer means, 28 first packet branching means, 29 second packet branching means, 41 buffer (buffer means), 50,71 zone escape notice message, 51,52 base station position information message, ST2
Zone escape notice message notification means, ST12 Zone settlement message notification means.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI H04Q 7/38 (72) Inventor Toshiyuki Kuze 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (56) References JP-A-9-252321 (JP, A) JP-A-8-46643 (JP, A) JP-A-6-46079 (JP, A) JP-A-8-181710 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04B ^7/ 24-7/26 H04Q ⁷ /00-7/38

Claims (11)

(57) [Claims] 1. A base station which controls and communicates with a mobile device within a fixed zone via a wireless line, and an appropriate communication path of a switching network to an optimum base station for the mobile device. In a mobile communication network control device that transfers fixed-length or variable-length packets having fixed header information as communication information to a communication network composed of crossover switching stations for setting ,
Indicates that the mobile device is normally in the zone
Mode and the mobile device escapes from the zone
Handover in a state where there is a high possibility that
And the mobile device is a zone in which the mobile device is located.
Zone movement to detect if there is a high probability of escape from the
Detection means and the zone movement detection means in the normal mode
Detection is likely to escape from the zone
If it is determined that
Send the zone exit notice message and move
Escape notice message to put the machine in handover mode
Message notifying means and the above-mentioned zone during handover mode.
The detection by the mobile movement detection means has been fixed in the zone
If it is determined that
While sending the zone fixing message,
Equipped with zone fixing message notification means for normal mode
Well, the crossover exchange is
In response to receiving sage and zone settlement messages
Mode and normal mode are recognized.
In the multipath connection setting mode in the server mode
From the visited zone base station to the mobile device and
In front of the surrounding zone base station where the mobile device may move
Note that setting a multipath connection to a mobile device
The identification information adding means,
The packets flooded to the network are the same
Is added to the packet to identify the packet delay
By means of
May move around the surrounding zone base stations
Delays the packets transferred over the Chipas connection,
In the normal mode, the multipath connection setting means
Via the existing zone base station
Option, and identify by means of identification information addition
A mobile communication network control device characterized by stopping addition of information to a packet . 2. A first communication quality storage in which a crossover switching center stores communication quality whether a packet loss is strictly requested or a packet delay is strictly requested for each connection addressed to a mobile device. In the handover mode, when the communication quality required for the connection is severe against packet loss, the packet delay means delays the packet transferred on the multipath connection via the peripheral zone base station. , when the communication quality required in connection tight to the packet delay, the mobile communication network control apparatus according to claim 1, wherein the stopping the delay of the packets by the packet delay means. 3. The mobile device comprises buffer means for accumulating received packets, and packet extracting means for arbitrarily adjusting the extraction time interval of the packets accumulated in the buffer means. The mobile communication network control device according to claim 1 or 2 . 4. The mobile device has a second communication quality storage means for storing a communication quality of whether or not to connect the buffer means and the packet extracting means for each connection, and the buffer means and the packet extracting means, 4. The mobile communication network control apparatus according to claim 3, wherein each connection is connected based on the second communication quality storage means. 5. The mobile device comprises a destination zone prediction means for measuring a signal state received from a visited zone base station and a surrounding zone base station to predict a destination zone, and the zone escape notice message notification means is , Adding a destination zone predicted by the destination zone predicting means to the zone escape notice message and transmitting the message to the crossover exchange.
Its cross-over switching center of claim 1 of claim 4, wherein determining a peripheral zone should be set to multi-path connection depending on the destination zone in the received zone escaped notice message The mobile communication network control device according to any one of claims 1. 6. The mobile device and the base station are provided with position information receiving means for receiving the position information of the mobile device and the base station by a position measurement system such as GPS, and the base station comprises:
A base station position information message notifying means for notifying the mobile station in the zone of the base station of the base station position information message indicating the position information of the base station and the effective zone distance based on the received position information. The zone movement detecting means of the mobile station is in accordance with the location information of the base station and the effective zone distance of the received base station location information message and the location information of the mobile station received from the location measurement system. The mobile communication network control device according to any one of claims 1 to 4 , wherein it is determined whether or not there is a possibility of exiting the zone. 7. The mobile device and the base station are provided with position information receiving means for receiving position information of the mobile device and the base station by a position measurement system such as GPS, and the base station comprises:
And a base station position information message notifying means for notifying the mobile station in the existing zone and the surrounding zone of the base station position information message indicating the position information of the base station and the effective zone distance based on the received position information. , The zone movement detecting means of the mobile unit, when detecting that the mobile unit is likely to escape from the existing zone, the base station position information and the effective zone of the received base station position information message. Predicting the destination zone according to the distance and the position information of the mobile device received from the position measurement system, adding the predicted destination zone to the zone exit notice message, and transmitting the message to the crossover exchange. The mobile communication network control device according to claim 5 . 8. The mobile device and the base station are provided with position information receiving means for receiving the position information of the mobile device and the base station by a position measurement system such as GPS, and each of the base stations receives the received position information. Based on, while notifying the surrounding zone base station base station position information message indicating the position information and effective zone distance of the base station,
A base station position information message notifying means for notifying a mobile station in the current zone of the base station and peripheral zone base stations, and a base station position information message indicating a valid zone distance; When the movement detecting means detects that the mobile station is likely to escape from the zone in which the mobile station is located, the location information and the effective zone distance of the base station and the surrounding zone base station of the received base station location information message are detected. And predicting the destination zone according to the position information of the mobile device received from the position measurement system, adding the predicted destination zone to the zone escape notice message, and transmitting it to the crossover exchange. The mobile communication network control device according to claim 5, characterized in that: 9. The mobile device, based on the position information of the base station of the zone which has passed so far in response to the received base station position information message, the moving direction of the mobile device in the existing zone and the position of GPS or the like. Based on the position information of the mobile unit by the measurement system, the mobile unit is provided with a moving direction recognizing unit that recognizes the moving direction of the mobile unit from the continuity with the moving direction of the mobile unit in the existing zone, and detects the zone movement of the mobile unit. The means predicts the destination zone according to the moving direction of the mobile device recognized by the moving direction recognizing means when detecting that the mobile device is likely to escape from the zone in which the mobile device exits, and exits the zone. the announcement message, the mobile according to any one of claims 8 claims 6, characterized in that transmitting the crossover switching center by adding the predicted destination zone Communication network control apparatus. 10. A mobile device, based on position information of a base station of a zone that has passed through in response to a received base station position information message, the moving speed of the mobile device in the existing zone and the position of GPS or the like. Based on the position information of the mobile unit by the measurement system, the mobile unit includes a moving speed recognition unit for recognizing the moving speed of the mobile unit from the continuity with the moving speed of the mobile unit in the zone where the mobile unit is located. The means is highly likely to escape from the zone in which the mobile device is located, and when it is determined that the moving speed recognized by the moving speed recognition means is high, Depending on the direction of movement, the destination zone adjacent to the existing zone and the destination zone adjacent to the destination zone due to the subsequent movement are predicted, and the zone exit warning message is displayed. Sage, predicted mobile communication network control apparatus according to claim 9, wherein the transmitting them to the destination zone is added to cross-over switching center. 11. A mobile device recognizes a moving direction and a moving speed of the mobile device in a zone in which the mobile device is located based on position information of the mobile device by a position measurement system such as GPS, and the moving direction of the mobile device. And mobile speed as a mobile device information message to the crossover switching center, and a mobile device information message transmitting means, and when it is detected that there is a high possibility that the mobile device will exit the existing zone, The crossover switching center responds to the received mobile unit information message by providing a zone-exiting-prediction message notification means for transmitting to the crossover switching center as a zone-leaving advance message adding the moving direction and moving speed of the mobile unit. Direction and speed of movement of the mobile device, and direction and speed of movement of the mobile device in response to the received zone escape notice message Based on the above, the continuity of the moving direction and the moving speed, it is judged whether the moving speed is high, and when it is judged that the moving speed is high, the moving destination zone adjacent to the visited zone according to the moving direction of the mobile device and it predicts a destination zone adjacent to the destination zone by subsequent movement, claim claim 6, wherein determining a peripheral zone should be set to multi-path connection depending on their destination zone 8 The mobile communication network control device according to any one of the above.