WO2004071122A1

WO2004071122A1 - Radio communication system and radio communication resource management device

Info

Publication number: WO2004071122A1
Application number: PCT/JP2003/001133
Authority: WO
Inventors: Masahiro Ohsugi; Jun Ito; Yoshimi Sasaki
Original assignee: Fujitsu Limited
Priority date: 2003-02-04
Filing date: 2003-02-04
Publication date: 2004-08-19
Also published as: JPWO2004071122A1; JP4071770B2

Abstract

A radio communication system capable of rapidly communicating with a desired partner node according to a change of communication condition after allocation of a radio communication resource has been rejected due to a congestion state or other communication state. The radio communication system includes a mobile terminal performing a call to communicate with a desired partner node and a radio communication resource management device. The radio communication resource management device includes storage means for sequentially storing information on communication for which allocation of a radio communication resource has been rejected, the information containing information on the mobile terminal and the desired partner node, monitoring means for monitoring whether the radio communication resource has been released, and allocation means for allocating the radio communication resource which has been released and acquired to a communication between a mobile terminal and a partner node specified according to the aforementioned information, thereby enabling the communication.

Description

TECHNICAL FIELD Wireless communication system and wireless communication resource management device

The present invention relates to a wireless communication system and a wireless communication resource allocation device. Background art.

Radio communication systems used in this type of technical field include, for example, a radio network controller (RNC) that controls a plurality of radio base stations, and a radio network controller (RNC) connected to the radio network controllers. It has a core network that includes Tanada. Each of the radio base stations is provided for each predetermined geographical area (cell), and is connected to a mobile terminal located in the cell via a radio link.

FIG. 1 shows a transmission sequence of a mobile terminal that can be performed in such a wireless communication system. In order for the user of the mobile terminal to connect to the desired partner node, information for calling the partner node, such as a telephone signal, is input to the mobile terminal (102). The mobile terminal transmits a transmission request to the radio base station, and the transmission request reaches the radio network controller. In this figure, the radio base station is omitted for simplicity. In the radio network controller, a connection procedure for allocating resources for the control channel is executed (104). Using the set control channel, the mobile terminal transmits information such as its own signal to the wireless network control device (106). The wireless network control device refers to the caro entry database, creates information necessary for the authentication procedure for the mobile terminal (108), and transmits it to the mobile terminal along with the authentication request (110). The mobile terminal collates the received authentication request with its own authentication information, determines that they match, and responds to the wireless network controller (112). Then, a connection procedure for allocating a communication channel resource to the mobile terminal is executed (114). Upper core net of wireless network controller The work (not shown) shows the procedure for calling the correspondent node, during which the mobile terminal is informed of the broadcast signal indicating that the call is being made (1 16). When a response is received from the correspondent node, a connection notification is transmitted to the mobile terminal, and in response to the notification (118), the mobile terminal can communicate with a desired correspondent node (1). 2 0).

FIG. 2 shows details of a connection procedure for setting a control channel or a speech channel performed in steps 104 and 114 of FIG. When necessary information to the mobile terminal (for example, destination «IS number) is input (202), an outgoing request reaches the wireless network control device via the wireless base station (204). 0 6). The radio network controller includes elements for executing various functions, for example, a function for controlling a plurality of radio base stations connected under the control, a mobile terminal such as a CCCH and a core network. It is possible to reduce the function of transmitting and receiving specific signals to be transmitted and received, the function of controlling mobile terminals, and the like. Based on these functions, the wireless network control device can manage communication resources used for, for example, a control channel or a communication channel, and perform wireless communication based on traffic volume, communication quality, and the like. Allocate the communication resources of (208). Communication resources are allocated to the control channel and the communication channel according to the procedure shown in FIG. When the content of the allocation of the communication resources is determined, a request for actually setting the wireless link is transmitted from the wireless network control device to the wireless base station (210), and the wireless base station responds to the request. Yes (2 1 2). Thereafter, the radio network controller transmits a connection notification to the mobile terminal (2 14), and the mobile terminal executes communication using the set control channel or communication channel (2 16 2 1 8).

Figure 3 shows the incoming sequence of the mobile terminal. Upon receiving an incoming call from the core network including an exchange (302), the wireless network control device calls (paging) the mobile terminal (304). The mobile terminal that has responded to this call performs a connection procedure for setting up a control channel (306). This procedure is substantially equivalent to that performed at 104 in FIG. 1 above. Using the set control channel, the mobile terminal transmits a response to paging (304) to the wireless network control device (308). The wireless network controller refers to the caro entry database as in the case of the flow chart in Fig. 1, and performs the necessary authentication procedures for mobile terminals. The information is created (309) and transmitted to the mobile terminal together with the authentication request (310). The mobile terminal collates the received authentication request with its own authentication information, confirms that they match, and responds to the wireless network control device (3 1 2). Then, a connection procedure for allocating a communication channel resource to the mobile terminal is executed (314). A signal indicating the calling state is praised by the mobile terminal side (3 16), and the connection is performed on the network controller side (3 18). Thus, the mobile terminal can make a call in response to a call from the correspondent node.

By the way, in the communication method as described above, if the total traffic volume required of the wireless communication system becomes larger than the communication capacity secured by the wireless communication system, all communication can be performed well. It becomes difficult (particularly, it becomes difficult to allocate communication resources in step 208 of FIG. 2).

Japanese Patent Application Laid-Open No. 2000-254544 discloses a technique for coping with line congestion (congestion) in a wired section such as a fixed telephone network. However, unlike the wired section, it is not always easy to adopt a dedicated (wired) line in the wireless section, or to adopt a method of bypassing to another wired line network such as the Internet Protocol (IP). Rather, it is difficult to avoid 賴辏. Furthermore, since the communication terminal in the wireless section is a mobile terminal that can move, the change in the communication state is much larger than that in the wired section. For example, traffic power S concentrates on the age at the time of a disaster event, etc., and there is a very high possibility that the processing of outgoing or incoming calls to the area (or cell) will be performed. It is not always easy to predict the locations and cells where congestion occurs. In addition, it is difficult to predict when regulations will be lifted.

When traffic is congested, for example, if the caller's radio link is congested and you want to talk on the phone, you must repeatedly go on-hook until the restriction S is released. There is a problem that it is inconvenient. Also, if the radio link on the receiving side is congested, the call must be executed many times, which is inconvenient. Furthermore, since the activation and release of regulations are performed irregularly, the connection may or may not be successful, depending on the timing of the call. For this reason, there is a concern that the success or failure of the connection is not necessarily performed fairly. Disclosure of the invention

The present invention relates to a radio communication system capable of promptly communicating with a desired correspondent node in response to a change in communication status after allocation of radio communication resources is rejected due to a congestion state or other communication status. It is another object of the present invention to provide a system and a wireless communication resource allocation device.

The present invention is directed to a method for controlling a mobile terminal in accordance with a change in a communication state no matter how the mobile terminal moves in a wireless communication system after allocation of a wireless communication resource is rejected due to a congestion state or other communication state. It is another object of the present invention to provide a wireless communication system and a wireless communication resource allocating device that enable prompt communication with a desired partner node. These objects are solved by the means described below.

According to the present invention,

A mobile terminal that makes a call to communicate with a desired partner node;

ttrt A wireless communication system having a wireless communication resource pipe a that manages wireless communication resources available for its own communication, wherein the wireless communication resource pipe a stores information about communication for which wireless communication resource allocation has been rejected. Storing the information in order of time, wherein the information includes at least information on it's own mobile terminal and the partner node that wants to dislike it;

Monitoring means for monitoring whether the mobile terminal is capable of being allocated to the communication between the mobile terminal and the desired destination node, and whether or not the mobile terminal has been released;

Allocation that enables self-editing communication by allocating released and reserved wireless communication resources to communication between a mobile terminal and a partner node specified according to the time information stored in chronological order. Means

Wireless communication system characterized by having

1S Removed. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a flowchart showing a communication sequence of a mobile terminal.

Figure 2 shows the details of the connection procedure for setting up a control channel or a speech channel. It is a flow chart.

FIG. 3 is a flowchart showing an incoming sequence of the mobile terminal.

FIG. 4 is an overall view of the wireless communication system according to the embodiment of the present invention.

FIG. 5 is a block diagram showing main functions in the wireless communication system according to the embodiment of the present invention.

FIG. 6 shows a flowchart of the operation before the restriction is released in the wireless communication system according to the embodiment of the present invention.

FIG. 7 is a flowchart of an operation after the restriction S is released in the wireless communication system according to the embodiment of the present application.

FIG. 8 is a diagram illustrating an example of data items stored in the queue table.

FIG. 9 is a diagram showing an outline of data items stored in the queue table. BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 4 is an overall view of the wireless communication system according to the embodiment of the present invention. Wireless communication system 400 provides services within a servicer comprised of a plurality of geographic regions (cells) 402. That is, the mobile terminal 401 can receive a mobile communication service and a predetermined service associated therewith within a geographical area covered by the plurality of senoires 402. A radio base station corresponds to each of the plurality of cells 402, and a predetermined number of radio base stations are controlled by a radio network controller (RNC). In FIG. 4, for simplicity, a predetermined number of wireless base stations and wireless network control devices for controlling them are illustrated as wireless devices 404 and 406. The slats 404, 406 are responsible for one location register, each self-propelled insect or a plurality of wireless devices. In the figure, for the sake of simplicity, the wireless device 404 is drawn to control the first location registration area LAI 1 (LAI: local area identifier), and the wireless device 406 is drawn to control the second location registration area LAI 2, respectively. You. The first location registration area, LAI1, contains four cells, CI1 to C14, and the second location registration area, LAI2, contains two cells, C21 and C22. I have. Each of the fiberless devices 404 and 406 is connected to an exchange 410 included in a higher-order core network (CN: corenetwork). The exchange 410 can connect the subordinate communication system to a fixed network, a mobile communication network, or another communication system. For simplicity, the switching 410 is not provided with a single drawing, but it is also possible to provide a plurality of exchanges and control the switching of a plurality of wireless devices hierarchically or in parallel. Exchange 410 is connected to a subscriber database 412 that stores information about the subscribers of wireless communication system 400. The caro input database 412 particularly relates to a service (hereinafter referred to as a “priority allocation service”) that can receive priority communication resource allocation after the restriction is released due to congestion as described later. Information, including, for example, whether the subscriber of the communication system is eligible to receive the priority assignment service.

FIG. 5 shows a functional block diagram in a wireless communication system according to the embodiment of the present application, and shows a main functional block diagram particularly relevant to the present invention. Originating mobile terminal 502, originating wireless access network (RAN ··· radioaccessnetwork) 504, core network 506, terminating-side radio access network (RAN) 508, and desired communication partner node The mobile terminal 510 on the receiving side is shown in FIG. For the sake of simplicity, the RAN is only drawn one by one on the calling side and the receiving side, but in reality there may be multiple RANs.

The RAN 504 includes allocating means 512 for allocating communication resources related to the unregulated # ^ 1 control channel or the communication channel, and a regulation remedy which performs predetermined processing before and after the regulation is released. Receiving control means 514 force S included. Here, the regulation means that a request for allocating communication resources is rejected, and is performed, for example, when traffic is congested. The ability to regulate incoming or outgoing calls in a geographical area is managed by the radio network controller responsible for the area or the higher core network.

Further, the RAN 504 includes a notification control means 516 for notifying the subordinate mobile terminal 502 and a connection queue tape and queue table 518 for storing information relating to communication for which the allocation of communication resources has been rejected by regulation. Have. The information stored in the connection queue table 518 includes information (for example, a subscriber number such as a number) for specifying a calling side and a called side regarding a rejected communication, and a state of capturing a line (ON / OFF). Other information is stored in chronological order. You That is, even if a request for allocating communication resources for a target of the preferential allocation service is rejected a plurality of times, various information related to the plurality of communications is stored in chronological order. The regulation solution receiving control means 5 14 has a monitoring means 5 20 for monitoring the power of the regulation force S released. The monitoring means 5200 has a function of monitoring the presence or absence of the communication resources released by the allocating means 512 and securing the released communication resources when they occur. The regulation breaking control means 5 1 4 has a judging means 5 2 2, which is a participant's power, the power which is subject to the communication system, or the priority allocation service described above. Is determined as the target force. Furthermore, the control means 5 14 has a mobility management means 5 24, which is used for the mobile terminal 502 to check the reception electric field strength of the radio wave received from the surrounding radio base station. Then, it is detected that the mobile terminal 502 is moving.

The core network 506 has a recite 525, which connects a call from the subordinate mobile terminal 502 to a destination node in a fixed network, a mobile communication network, or another communication system. Or an incoming call from the partner node through them is connected to the mobile terminal 502 side. The core network 506 has a subscriber database 527 connected to the exchange 525. The caro entrant database 527 stores not only information on the subscribers of the communication system, but also information on whether or not a caro entrant is eligible to receive the preferential allocation service. . Further, the core network 506 stores the data items stored in the queue table for the caro entries managed by the subscriber database 527 in ^, and stores the data items in the queue table of any RAN. A queue table management server 529 for managing the As described above, since there may actually be multiple RANs, the queue table in which data items are stored is not uniquely determined.

The RAN 508 is the terminating-side radio access network and has substantially the same elements as the originating RAN 504. That is, to RAN 508, allocating means 5 1 2 'for allocating a communication resource relating to a control channel or a communication channel to unrestricted ^, and perform predetermined processing before and after the restriction is released Regulatory solution control means 5 14 4, force S included. The RAN 508 is provided with a notification control means 516 for notifying the subordinate mobile terminal 510 and a communication resource allocation by regulation. There is a connection queue table 5 18 ′ that stores information about the rejected communication.

The regulation control means 5 14 has monitoring means 5 20 for monitoring whether or not the restriction force S has been released. The monitoring means 520 monitors the presence or absence of the communication resources released by the allocating means 522, and has a function of securing the released communication resources when they occur. The control means 5 14, having control over the regulation, has a decision means 5 22, which is used to determine whether a certain subscriber is being served by the communication system or the priority assignment described above. Judgment of the inadequacy, etc., which is the target of the service. Further, the regulation control means 5 14, has a movement management means 5 24 4, which detects that the mobile terminal 5 10 is moving.

FIGS. 6 and 7 show the operation of the wireless communication system according to the present embodiment before (FIG. 6) and after (FIG. 7) the regulation is released. For the sake of simplicity, the mobile terminal 502 in FIG. 5 calls the mobile terminal 510 which is the partner node: Suppose ^. It is also assumed that the cell to which mobile terminal 502 belongs cannot allocate communication resources in response to a request from mobile terminal 502 due to traffic congestion. If the assignment of the communication resource to the mobile terminal 502 is rejected, the control solution 5 ^ 14 shown in FIG.

In step 604, the subscriber number of the originating mobile terminal related to the communication for which the allocation of communication resources has been rejected is extracted. The subscriber number can be, but is not necessarily limited to, a so-called number, and can be any information identifying the mobile terminal or subscriber. Power [1 Extraction of the entry number is performed by the determination means 5 2 2.

In step 600, the determination means 522 accesses the subscriber database 527.

In step 608, the determination means 5222 determines whether or not the extracted subscriber number is a target of the preferential allocation service according to the present invention. If the subscription is not eligible, flow proceeds to step 610, where conventional control in the restricted state is performed. If the subscriber number is subject to the priority assignment service, go to step 6-12. Whether or not a subscriber is eligible for the preferential assignment service can be set when subscribing to the communication system itself. It is also possible for the subscriber to specify a specific number as needed through the communication terminal. In the present embodiment, the caro input user can select whether or not to become a target of the preferential allocation service in either of the former and latter forms.

In step 6 1 2, the calorie number, partner node number, line seizure flag and other information are stored as a set of data items in the queue tape 5 18 in FIFO (first—in—first—out). ) Format, ie registered as a subscriber waiting for communication resource allocation. The reason why the format is 'FIFO' is that, when a plurality of data items are stored in the queue table 518 before and after in time, the previously stored content is retrieved first. The line capture flag is switched from OFF to ON when the communication resource secured as described later is allocated to the mobile terminal.

Then, it waits for the restriction to be released in step 6 14. As described above, since the regulation is activated due to traffic congestion or the like, the regulation can be released by a change in communication conditions. When the regulation is lifted, the flow shown in Fig. 7 starts.

In step 720, the restriction release waiting control means 5 14 receives from the allocation means 5 12 a notification that the restriction has been released. The notification of the restriction release is performed based on the notification from the upper core network 506 in addition to the instruction from the side of the upper core network 506, and the notification that the communication resources managed by the allocating means 5 12 have become available. : There is also ^. In any case, the notification of deregulation means that there is at least one communication resource (one line) available for communication.

In step 704, upon receiving the notification of the restriction release, the restriction release control means 514 secures the released communication resources. If "secure" is not performed in this case, the communication resource will be allocated to the call for which the call request or call was made most quickly after the release of the communication resource, as in the past. According to the present embodiment, by “securing” the released communication resources, it becomes possible to allocate them to the priority allocation service provider.

0 6, the restriction release standby control means 5 1 4 Access 1 8

In step 708, it is determined whether or not the data item (the information stored in step 612) indicating that the communication resource is waiting to be allocated is included in the queue tape 518. . If no data item is registered in the queue table 518, the flow proceeds to step 710, and the communication resources secured in step 704 are released. As a result, the communication resource is allocated to the call that made the call request or the call request most quickly thereafter. On the other hand, if there is a data item indicating that the communication resource is waiting to be allocated, the flow proceeds to step 7 12. At present, data items including the subscriber number A of the mobile terminal 502 and the subscriber number B of the correspondent node 5110 are stored in the queue table 518. In step 712, the judgment means 522 accesses the subscriber table 522 again, and in step 714, the user of the mobile terminal 502 still requests to allocate communication resources.否 ^ or not. Similar; β has already been done in step 608, but it is done again in step 714 in order to respect the subscriber's latest intention as much as possible. For example, at the time of step 618, we wanted to receive priority assignment of communication resources and communicate with the correspondent node.However, due to prolonged regulation, we abandoned communication with the correspondent node. The setting may have been changed so as not to receive the priority assignment service. In step 714, if the mobile terminal 502 does not wish to allocate communication resources anymore, the process returns to step 708 to determine whether or not there is a temporally stored data item. Is determined. On the other hand, in step 714, the mobile terminal 502 still requests the allocation of communication resources! /, And if so, proceeds to step 16.

At step 716, paging (paging) to the mobile terminal 502 is performed, that is, a call is made using the notification control means 516.

In step 718, it is determined whether or not the mobile terminal 502 has responded to the paging. If there is no response, the secured communication resource power S is released. Is released, but it is also possible to return to step 708 while securing it.) When the mobile terminal 502 responds, the flow proceeds to step 722. In step 722, the communication resources secured in step 704 are allocated to the mobile terminal 502, and the data items in the queue table 518 are updated. Specifically, as shown in step 724, the line capture flag of the data item relating to the mobile terminal 502 is switched to ON.

As shown in step 726, an operation for calling is performed thereafter using the allocated communication resources.

The flowcharts described with reference to FIGS. 6 and 7 assume that the mobile terminal 502 in FIG. 5 originates a call to the mobile terminal 510 that is a partner node. However, even when the mobile terminal 502 receives a call from the correspondent node 501 and the cell to which the mobile terminal 502 belongs is congested, FIGS. A flow similar to that described above is performed. The flow of this ¾ ^ is outlined below. If the assignment of the communication resources between the mobile terminal 502 and the RAN 504 is rejected, the control means 5 14 of FIG. 5 is activated in step 62.

In step 604, the subscriber number of the destination mobile terminal 502 related to the communication for which the allocation of the communication resource is rejected is extracted.

In step 600, access is made to the judgment means 522 and the subscriber database 526.

In step 608, the judging means 522 judges whether or not the extracted subscriber number is a target of the preferential allocation service according to the present invention. If it is a target of the priority number allocation service, proceed to step 612 if not, otherwise proceed to step 610 to perform control in the conventional regulation state . In Step 6 1 2, the subscriber number, number of the other node, other circuit information acquisition Furaguso is, as a set of data items, stored in a FIFO format in the queue table 5 1 ^8.

Then, it waits for the restriction to be released in step 6-14. When the regulation is lifted, a flow similar to that described with reference to FIG. 7 is started.

In step 702, the control means for receiving the release of the regulation 5 1 4 is notified from the allocating means 5 12 that the restriction has been released, and in step 704, the released communication resources are secured. . In step 706, the restriction release waiting control means 5 14 accesses the queue table 5 18.

In step 708, it is determined whether or not there is a data item (information stored in step 612) waiting for communication resource allocation in the queue table 518. If no data item has been registered in the queue table 518, the flow proceeds to step 710, and the communication resources secured in step 704 are released. On the other hand, if there is a data item indicating that the communication resource is to be waited for to be allocated, the process proceeds to step 7 12. At present, a queue including the subscriber number A of the mobile terminal 502 and the subscriber number B of the mobile terminal 501 is stored in the queue table 518.

In step 712, the judgment means 522 access the S subscriber table 527 again, and in step 714, the user of the mobile terminal 510 still requests the allocation of communication resources. Whether or not. If it is no longer desired to allocate a communication resource, the process returns to step 708 to determine whether there is a data item stored next in time. On the other hand, if the mobile terminal 5110 is still requesting the allocation of communication resources, the process proceeds to step 716.

At step 716, paging is performed on the mobile terminal 502 using the notification control means 516.

At step 718, it is determined whether or not the mobile terminal 502 has reacted to the paging. If there is no response, the secured communication resources are released. When the mobile terminal 502 responds, the flow proceeds to step 722.

In step 722, the communication resources secured in step 704 are allocated to communication with the mobile terminal 502, and the data items in the queue table 518 are updated. Specifically, as shown in step 724, the line capture flag of the data item relating to the mobile terminal 502 is switched to ON.

Then, as shown in step 726, an operation for calling is performed thereafter using the allocated communication resources.

In this way, the flow shown in FIG. 6 and FIG. 7 is executed between the mobile terminal 502 and the RAN 504 on the transmitting side of the ^^ and on the receiving side. Is You. In addition, since whether or not the mobile terminal force S is the power receiving side which is the originating side is relative, the mobile terminal 5100 can also be the originating side and the receiving side. A flow similar to that described with reference to FIG. Further, in the above embodiment, it was assumed that one of the calling side and the called side was initially regulated by the radiation, and then the regulating force S was released. It is regulated, and then the regulatory power S is lifted. In this case, the flow shown in Fig. 6 is executed before the restriction is released on the calling side, and the flow shown in Fig. 7 is executed after the restriction is released. At the same time, the same flow as in Fig. 6 is activated, and after the restriction is removed, the same flow as in Fig. 7 is executed. Then, the subsequent communication is performed using the communication resources secured at the calling side and the communication resources secured at the receiving side.

FIG. 8 shows an example of data items stored in the queue table 518. As shown in Figure 8, the data items include registration time 802, calling party number 804, called party number 806, line capture flag 808, mobility management flag 8 10 power S can be included, but not limited to these, and items can be added or deleted as necessary. These data items are deleted when the call associated with the data item ends.

The registration time 802 can be the time when these sets of data items are stored in the queue table 518, but are not necessarily limited thereto, and any time reference can be adopted. It is possible. Regardless of which criterion is adopted, the temporal context should be maintained when storing multiple data items. The subscriber numbers 804 and 806 of the calling party and the called party are information for specifying the communication nodes of the calling party and the called party, for example, telephone numbers. The line capture flag 808 is a flag that is set to ON when a line is allocated in step 724 of FIG. 7 and becomes OFF before allocation.

The mobility management flag 810 is a flag for detecting that the originating or terminating mobile terminal power S is moving, and is a signal received by the mobile terminal from surrounding wireless stations. It can be determined by examining the change of the received electric field strength. For example, if the received electric field strength from the first radio base station decreases and the radio field strength from the second radio base station increases, the mobile terminal moves in the direction of the second radio base station. Turns out.

By the way, a mobile terminal can perform communication while moving in a service area. Therefore, a mobile terminal may move in and out of a cell where traffic is congested. The following describes how the priority assignment service of the communication resource according to the present invention is performed.

In the technical field of mobile communication, the location of a mobile terminal can be managed in a location registration area in a core network or a subscriber database. The location registration area is generally a geographical area formed by one or more cells. Therefore, one location registration area may include one or more wireless network control devices (or wireless devices). For example, a call to a certain mobile terminal can be made by simultaneously broadcasting a paging signal only to the location registration area to which the mobile terminal belongs. When the mobile terminal moves beyond the boundary of the location registration area, the wireless device that manages the location registration area of the destination detects this fact and manages it in the core network (for example, the location registration to which the mobile terminal belongs). Area). In this embodiment, at least when this location registration update request is issued, the information stored in the queue tape of one RAN is transferred to the queue table of another RAN. The location of the information to be provided can be found by always managing it on the core network side, or by searching each time the RAN to which the core network moves has moved. First, as shown in FIG. 4, consider that mobile terminal 401 is initially located in cell C11, and then passes through cell C12 to cell C13. In this case, cells CI 1 and C 12 are congested with traffic, cannot make or receive calls, and are subject to regulation, but other cells C 13 and C 1 Item 4 is not subject to regulation. The mobile terminal 401 intends to communicate with a partner node (not shown). A predetermined data item relating to the present invention is stored in a queue table in the wireless device 404. I have.

FIG. 9 shows an overview of data items stored in the queue tables of the wireless devices 404 and 406. The location register, which is distinguished by LAI 1 that contains four cells, is under the jurisdiction of security-free 404. The location registration area distinguished by LAI 2 that includes two cells is under the jurisdiction of 406. In this case, the wireless device 400 The queue table 902 stores data items for each cell. In the queue table 902, the registration time of the data item for the cell C11, the calling party number (401 subscriber number), the called party number, the line capture flag and the mobility management flag are respectively: It is registered as Similarly, for cell C12,

― / X / Y / OFF / OFF

It is registered as, for cell C13, and as cell C14.

The fact that only the data item registered in cell C11 contains the time t t force S indicates that it has been registered as master data (mas t er d a t a). This indicates that the assignment of the communication resource was rejected in cell C11. The absence of time in the other Cenoles C12 to C14 data items corresponds to their registration as slave data (slavedata). In other words, in addition to storing data items in the queue table on a cell-by-cell basis, a cell in a regulated state is registered as master data, and is stored in another cell in the same location registration area. On the other hand, it is registered as slave data.

Assuming that the restriction is released while the mobile terminal 401 is located in the cell C11, the mobile terminal 401 registered first in the queue tape 902 is secured by the safe 404. The allocated communication resources are allocated to the mobile terminal 401. On the other hand, it is assumed that the user has moved to cell C12 without restriction being lifted. Senoré C12 is in a regulated state like cell C11, and the mobility management flag is set to OFF. The mobility management flag sets whether or not to enable the function of detecting that the mobile terminal is moving between cells based on the received electric field strength of the mobile terminal. When cells are regulated, this function is set to OFF to save communication resources as much as possible. Therefore, the movement management flag turns ON only when the slave It is a cell that is registered as a mobile station, and the mobile terminal power S is placed in an unregulated cell.

Mobile terminal 4 01 とする It is assumed that the mobile terminal proceeds further and reaches cell C 13. Since cell C13 is not subject to regulation and the mobility management flag is set to ON, it is detected that mobile terminal 401 has moved. When it is determined that the mobile terminal 401 is located in the cell C13, a call of the mobile terminal 401 is issued, and communication resources are allocated.

As described above, since the mobility management flag is OFF in the restricted cells C11 and C12, it is not determined whether or not the mobile terminal is located in those cells. It is clear. However, the monitoring means monitors the ability of the cell C 11 related to the master data to be released from the regulation, and as soon as communication resources become available, the mobile terminal 4 responds to the call. 0 Assign to 1. On the other hand, in Senoré C13 and cell C14, where regulation is not enforced, communication resources can be allocated as needed, so that monitoring and maintenance of communication resources such as cell C11 are possible. Is not required. In cell C13 and cell C14, since the mobility management flag is ON, it is possible to determine whether or not the mobile terminal 401 is in the cell in those cells. is there. For this reason, when it is determined that the mobile terminal 401 is located in those cells, communication resources are allocated to the mobile terminal 401.

Next, consider the case in which the mobile terminal 401 moves to the cell CI 21 in the location registration area LAI 2 adjacent to the cell CI 1 in the location registration area LAI 1. When the mobile terminal 401 moves and the location registration area is changed, information on the location registration is updated. That is, upon entering the location registration area LAI2, a procedure related to location registration is executed between the mobile terminal 401 and the subscriber database 4122. Then, the caro entry information on the mobile terminal 401 is downloaded from the subscriber database 412 to the wireless device 406, and the subscriber information on the mobile terminal 404 in the storage 404 is deleted. . At this time, data items relating to the mobile terminal 401 are transmitted from the queue table 902 of the non-maintenance 404 to the queue table 904 of the wireless device 406 via the core network. You. The data items stored in the queue table 900 depend on whether the cell is congested or not. Alternatively, they are registered as slave data and are arranged based on the registration time t1. If there are no congested cells, they are all stored as slave data.

If there are multiple congested cells in the destination location registration area, the master data with the registration time t1 must be registered in each of the multiple congested cells. become. For this reason, the master data is also registered in the cell where the mobile terminal has been present or in the past, and the communication resource is monitored and secured in those cells. If the mobile terminal does not respond to paging, the assignment to that mobile terminal is ignored, and such an operation is not inconvenient from the viewpoint of allocating communication resources.

In this example, since the cell C 21 and the cell C 22 are not regulated and the mobile management flag is set to ON, when the mobile terminal 401 enters the cell C 21, the position is determined. Is detected. Then, the call of the mobile terminal 401 is executed, and the allocation of communication resources is executed.

The range of the above-mentioned location registration area may be a single location registration area, which is the range covered by a single wireless device. Location of master data (the power of which wireless device the master data is registered in can be managed by the core network or searched as needed. On the other hand, the area of the location registration area can be reduced, It is also meaningful to set the location registration area according to the cell range, so that each time the mobile terminal moves and the cell changes, the location registration procedure (update of location registration area) is added. However, since one location registration area and one cell correspond to one in the queue table, for example, management in the queue table is simplified.

The preferred embodiment of the present invention has been described above, but the present invention is not limited to this, and various modifications and changes can be made within the scope of the present invention.

Claims

The scope of the claims

1. a mobile terminal that calls to communicate with a desired correspondent node;

lift A wireless communication resource management system that manages wireless communication resources available for self-communication. A wireless communication system having a wireless communication resource management device. Storage means for storing information on at least the dislike mobile terminal and the self-desired partner node; and

monitoring means for monitoring whether or not the tins mobile terminal and ttiiB can communicate with the desired destination node;

Allocation means for enabling communication by allocating the released and maintained wireless communication resources to communication between a mobile terminal and a partner node specified according to tirt self information stored in chronological order.

A wireless communication system comprising:

2. The method according to claim 1, further comprising a caro entry database for storing information on whether or not the mobile terminal or the remote node is to receive a predetermined service sculpture. Wireless communication system.

3. Furthermore, before the self-allocating means allocates the released and maintained wireless communication resources, the touching mobile terminal still wants to allocate the wireless communication resources based on the information stored in the entrant database. 3. The wireless communication system according to claim 2, further comprising means for determining whether or not the communication is performed.

4. The radio communication resource management device according to claim 1, wherein the radio communication resource management device is provided in a radio network control device that controls one or more radio base stations included in the location registration area to which the lift mobile terminal belongs. Wireless communication system.

5. ΙϋΙΒ 手段手段己手段 ft 請求請求請求請求請求請求請求請求請求請求請求請求請求請求請求請求請求請求請求請求請求請求請求請求 5. 5. 5. 5. 5. 5 .. A wireless communication system as described.

6. Self-monitoring means is formed to monitor whether or not the radio communication resources have been released in the cell where the further allocation of the radio communication resources is denied,

The mobile station according to claim 1, wherein the allocating means is configured to allocate a wireless communication resource to the mobile terminal when the mobile terminal is located in a cell where further allocation of the wireless communication resource is not rejected. Wireless communication system.

7. When the location registration area to which the disgusting mobile terminal belongs has changed ^, between the wireless network controllers managing the location registration error before and after the movement, tuia information regarding the communication for which the allocation of wireless communication resources has been rejected is The wireless communication system according to claim 1, wherein the wireless communication system is formed to be transmitted.

8. The wireless communication system according to claim 7, wherein the location registration error is defined to be different for each cell associated with each of the wireless base stations.

9. A wireless communication resource management system for managing wireless communication resources available for communication between a mobile terminal and a predetermined correspondent node,

Storage means for storing information related to communications for which the assignment of wireless communication resources has been rejected in chronological order, wherein the information includes at least information on a self-editing mobile terminal and a partner node desired to be self-editing;

Monitoring means for monitoring whether or not wireless communication resources that can be allocated to communication between a mobile terminal and a desired partner node are released.

Allocating the released and maintained wireless communication resources to the communication between the mobile terminal and the partner node specified according to the tiriB information stored in chronological order, thereby enabling touch-sensitive communication A wireless communication resource pipe a¾ characterized by the above-mentioned. 1 0 · Whether the mobile terminal or the partner node is eligible to receive the predetermined service »! 10. The wireless communication resource management device according to claim 9, wherein the wireless communication resource management device is connected to a subscriber database that stores information about the user. 1 1. Furthermore, before the wireless allocation resources released and reserved by the contact allocation means, the ttilB mobile terminal still allocates the wireless communication resources based on the information stored in the entrant database. 10. The wireless communication resource management device according to claim 9, further comprising means for judging whether or not the desired communication is performed.

12. The radio communication resource management system according to claim 9, wherein the radio communication resource management system is configured to control one or more radio base stations included in the location registration area to which the mobile terminal belongs.

13. The storage device is characterized in that the storage means is configured to store the self-editing information for each cell according to the communication status of each of the one or more radio base stations in each cell.

1 4. Lift self-monitoring means is configured to monitor whether or not the wireless communication resource power S is released in the cell where further allocation of the wireless communication resource is denied;

13. The method according to claim 13, wherein when the fillB mobile terminal is located in a cell where V is not denied further allocation of the wireless communication resource, the wireless communication resource is allocated to the mobile terminal. Wireless communication resource pipe S¾ described.

1 5. If the mobile terminal moves and the location registration area to which the mobile terminal belongs changes, the wireless communication resources between the wireless network control devices that manage the location registration area before and after the mobile terminal change. 10. The wireless communication device according to claim 9, wherein the information is formed to transmit the information on the leaky communication for which the assignment of the communication has been denied.

16. The wireless communication resource management device according to claim 15, wherein the location registration area is defined so as to be different for each cell associated with each of the wireless base stations.