JP2004228905A - Radio channel allocation method, base station equipment, and mobile object communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio channel allocation method for enabling the selection of a priority degree by a user corresponding to conditions and allocating a radio channel to mobile equipment in accordance with the selected priority degree. <P>SOLUTION: In allocating the radio channel to the mobile equipment, base station equipment 2 releases the radio channel allocated to the mobile equipment during communication and allocates it to a different mobile object communication terminal on the basis of the priority degree of the mobile equipment 10. The base station equipment 2 acquires the priority degree predetermined for the mobile equipment 10 in the case that the mobile equipment 10 is detected, and changes the priority degree in the case that a priority degree change request is outputted from the mobile equipment 10. In the case that there is no radio channel allocatable to the mobile equipment 10, the base station equipment compares the priority degree of the mobile equipment 10 with the priority degrees of the other mobile equipment 11-1n during the communication, releases the radio channel allocated to the mobile equipment of the low priority degree and allocates it to the mobile equipment 10. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wireless channel assignment method, a base station apparatus, and a mobile communication terminal, and more particularly, to an improvement in a method of assigning a wireless channel to a mobile communication terminal in a mobile communication system such as a mobile phone or a car phone. .
[0002]
[Prior art]
When the wireless communication line is saturated, a new user cannot be connected to the line. For this reason, a line connection control method of disconnecting the line of the user who is communicating and connecting the line to a new user has been conventionally proposed (for example, see Patent Document 1).
[0003]
This line connection control method determines whether the line state is saturated based on the number of users currently communicating, and when a line state is saturated, there is a line connection request from a high priority user. In this case, the line of the user with the lower priority among the users currently communicating is cut off, and the line with the user with the higher priority is connected. By such a method, it is possible to provide a wireless communication service such as a priority of connection to a call in accordance with a contract form of a user, satisfy each user's desire for a wireless communication service, and effectively use frequency resources. can do.
[0004]
[Patent Document 1]
JP 2001-54164 A (FIG. 2, [0023], [0025])
[0005]
[Problems to be solved by the invention]
In the conventional line connection control method described in Patent Literature 1, the priority of a call is predetermined for each mobile device according to a contract form of a subscriber. For this reason, each mobile device can always communicate only with the priority determined at the time of the contract, and the user cannot select the priority according to the situation such as the degree of importance or the degree of urgency. In other words, there is a problem that it is not possible to select an arbitrary priority in the mobile device and acquire a wireless channel according to the situation of the user.
[0006]
Patent Document 1 also states that a contract can be made for each call. However, specifically, how to make a contract with a wireless communication service provider on a call-by-call basis, and how to reflect the priority according to the contract in line connection control It is not clear at all how this can be done.
[0007]
For example, it is conceivable that an arbitrary priority can be specified in the course of a calling operation in a mobile device. In this case, the incoming call priority cannot be set arbitrarily. Also, usually, the user situation changes every moment during communication, but if the priority at the start of communication is always maintained until the end of communication, it is necessary to provide an excessive communication quality to a specific user. And may provide poor communication quality to other users.
[0008]
In order to cope with such a problem, it is conceivable to enable the user to change the priority not only during the call operation but also during communication. However, if a special fee is collected according to the priority and if the priority can be changed during communication, each user sets a high priority only when making a call and sets a low priority during communication. It is possible to change to In this case, in the wireless area where the communication channel is saturated, other users may be troubled, and each user may be in a situation where they compete for each other's wireless channel.
[0009]
The present invention has been made in view of the above circumstances, and enables a user to select a priority according to a situation, and allocates a wireless channel to a mobile device according to the selected priority. The purpose is to provide. It is another object of the present invention to provide a base station apparatus and a radio communication terminal capable of realizing such a radio channel assignment method.
[0010]
It is still another object of the present invention to provide a wireless channel allocation method that gives a user an opportunity to change the priority including during communication and prevents abuse of the priority change. It is another object of the present invention to provide a base station apparatus and a radio communication terminal capable of realizing such a radio channel assignment method.
[0011]
[Means for Solving the Problems]
The radio channel allocation method according to the present invention is characterized in that, when the base station apparatus allocates a radio channel to a mobile communication terminal, the radio channel allocated to the mobile communication terminal in communication based on the priority of the mobile communication terminal Is a method of allocating a wireless channel to a new mobile communication terminal, and comprises a priority acquisition step, a priority change step, a priority comparison step, and a wireless channel surrender step.
[0012]
In the priority obtaining step, at the time of position registration of the mobile communication terminal, the base station device obtains a predetermined priority for the mobile communication terminal whose position is to be registered from the location register and associates the priority with the mobile communication terminal. Hold. In the priority change step, when a priority change request is output from the mobile communication terminal whose position has been registered, the base station apparatus determines the priority held for the mobile communication terminal that has issued the priority change request. change.
[0013]
In the priority comparison step, when there is no radio channel that can be assigned to the mobile communication terminal that newly starts communication, the base station apparatus determines the priority of this mobile communication terminal by each mobile communication terminal that is communicating. Compare with terminal priority. In the wireless channel surrender step, based on the comparison result in the priority comparing step, the wireless channel allocated to the mobile communication terminal in communication is released and allocated to the mobile communication terminal that has issued the wireless channel acquisition request.
[0014]
Through these steps, the priorities of the mobile devices can be compared, and a wireless channel can be allocated according to the priorities. At that time, the priority can be changed in the mobile device, and not only the priority determined in advance for each mobile device, but also, when the priority is changed, the assignment of the wireless channel is performed based on the changed priority. Is performed.
[0015]
Note that the priority change request may be output based on a priority change operation before the mobile communication terminal starts communication, or may be output based on a priority change operation during communication. By enabling the priority changing operation during communication, the priority can be appropriately changed according to a change in the situation during communication, communication contents, or the like.
[0016]
Further, when the priority change request is output based on a priority change operation before and during communication of the mobile communication terminal, in the priority change step, the priority change request is issued before calling. May be rejected when a priority change request is output again during communication from the mobile communication terminal that has output. With such a configuration, it is possible to widely provide the user with the opportunity to change the priority, while prohibiting the use of changing the priority only at the start of communication.
[0017]
Further, a base station apparatus according to the present invention includes an intra-area subscriber information storage unit, a mobility management unit, and a radio management unit. The intra-area subscriber information storage unit is means for holding the priority of each mobile communication terminal whose location has been registered. The mobility management unit acquires a predetermined priority for the mobile communication terminal from the location register based on the location registration request from the mobile communication terminal, stores the priority in the area subscriber information storage unit, This is a means for changing the priority held in the intra-area subscriber information storage unit based on a priority change request from the communication terminal. The radio management unit allocates a radio channel to a mobile communication terminal that newly starts communication, and if a radio channel cannot be allocated, based on the priority held in the intra-area subscriber information storage unit. Means for releasing the wireless channel of the communicating mobile communication terminal and assigning it to the mobile communication terminal that has issued the wireless channel acquisition request.
[0018]
Further, the mobile communication terminal according to the present invention allows the user to specify a priority different from a predetermined priority, and transmits a priority change request to the base station device when the priority is changed. It is configured as follows.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a block diagram showing an example of a system configuration of the mobile communication system according to the first embodiment of the present invention. The mobile communication system includes a mobile station (MS: Mobile Station) 1, a radio base station (BS: Base Station) 2, a radio control apparatus (RNC: Remote Network Controller) 3, and a mobile switching station (MSC: Mobile Switching Controller). 4. A cellular communication system including a system information management device 5 and a location register 6.
[0020]
The mobile device 1 is a mobile communication terminal such as a mobile phone, a PHS, a PDA, and a vehicle-mounted terminal. A large number of wireless base stations (BS) 2 each form a wireless area RZ, which is a predetermined geographical area where wireless communication is possible, and perform wireless communication with the mobile device 1 in the wireless area RZ. . Each radio base station 2 is connected to a radio network controller (RNC) 3 and further connected to a mobile communication network NW via a mobile switching center (MSC) 4.
[0021]
The radio controller (RNC) 3 manages radio resources and controls the radio base station (BS) 2. Position information is assigned to each radio area RZ, and the same position information is assigned to the radio area RZ of the radio base station (BS) 2 connected to the same radio control device (RNC) 3. That is, a location registration area is formed by one or more adjacent wireless areas RZ.
[0022]
The mobile switching center (MSC) 4 has a line connection function, and establishes a line connection in a mobile communication network via a mobile communication network NW or a line connection to a public line network or the like via a gateway (not shown). Then, the call connection of the mobile device 1 is performed. The line connection by the mobile switching center (MSC) 4 includes packet switching in data communication, IP telephone, and the like.
[0023]
A system information management device 5 is connected to the mobile communication network NW along with a number of mobile switching centers (MSCs) 4. The system information management device 5 accesses the location register 6 based on an instruction of each mobile switching center (MSC) 4 and manages information on the mobile device 1 and the subscriber.
[0024]
The location register 6 includes location registration information 6a, subscriber information 6b, and billing information 6c. The location registration information 6a is location information of each mobile device (MS) 1, and is updated each time the mobile device (MS) 1 moves in the radio area RZ. The subscriber information 6b is contract information for each subscriber with a wireless communication service provider. Here, it is assumed that there is a one-to-one correspondence between the mobile device (MS) 1 and the subscriber, and the subscriber information 6b includes priority information for each mobile device (MS) 1. The billing information 6c is billing information for each subscriber.
[0025]
FIG. 2 is a block diagram showing one configuration example of the wireless base station 2 of FIG. The radio base station 2 includes an antenna 20, a radio transmission / reception unit 21, a signal processing unit 22, a wired network I / F unit 23, a radio management unit 24, a mobility management unit 25, a call control unit 26, a channel assignment information storage unit 27, It is configured by an in-area subscriber information storage unit 28.
[0026]
The wireless transmission / reception unit 21 performs transmission / reception processing of a wireless signal to / from the mobile device 1 in the wireless area RZ via the antenna 20. The wireless transmission signal is provided as a baseband signal from the signal processing unit 22, and is output to the antenna 20 after being subjected to frequency conversion (up-conversion) and high-frequency amplification in the wireless transmission and reception unit 21. The radio reception signal from the antenna 20 is low-noise amplified in the radio transmission / reception unit 21, frequency-converted (down-converted), and output to the signal processing unit 22 as a baseband signal.
[0027]
The wired network I / F unit 23 transmits and receives signals to and from the wireless control device 3 via a wired connection. The wired network I / F unit 23 sends out transmission data from the signal processing unit 22 to the wireless control device 3 and supplies received data from the wired network I / F unit 23 to the signal processing unit 22.
[0028]
The signal processing section 22 performs demodulation processing and decoding processing on the reception baseband signal output from the wireless transmission / reception section 21 to extract reception data and various control data. The extracted data is output to the wireless control device 3 via the wired network I / F unit 23, or is output to the wireless management unit 24, the mobility management unit 25, and the call control unit 26 as needed.
[0029]
The signal processing unit 22 adds control information to the transmission data input from the wireless control device 3 via the wired network I / F unit 23, performs an encoding process and a modulation process, and converts the transmission baseband signal. It is generated and output to the wireless transmitting / receiving unit 21. Further, it generates a transmission baseband signal based on the output data of the radio management unit 24, the mobility management unit 25, and the call control unit 26, and outputs the transmission baseband signal to the radio transmission / reception unit 21.
[0030]
The wireless management unit 24 manages a wireless channel in the wireless area RZ, and allocates a wireless channel to each mobile device 1 that communicates in the wireless area RZ. Information related to the assignment of the radio channel is stored in the channel assignment information storage unit 27, and the radio management unit 24 assigns the radio channel to the mobile device 1 and The specified radio channel is open.
[0031]
The movement management unit 25 performs processing such as position registration when the mobile device 1 enters the wireless area RZ or exits from the wireless area RZ. At the time of position registration, a position registration signal is output to the wireless control device 3 via the wired network I / F unit 23, and the position registration information 6a in the location register 6 is updated. Further, it acquires the subscriber information of the mobile device 1 whose location has been registered via the wired network I / F unit 23 and stores it in the intra-area subscriber information storage unit 28.
[0032]
The call control unit 26 controls call connection for the mobile device 1 in the radio area RZ. The call control unit 26 performs a call connection or a call disconnection with the wireless control device 3 via the wired network I / F unit 23, and the mobile device 1, which starts a new communication in the wireless area RZ, Alternatively, if there is a mobile device 1 in communication entering the radio area RZ, connection control of the call is performed.
[0033]
FIG. 3 is a conceptual diagram showing an example of a relationship between a wireless area RZ formed by the wireless base station 2 and a large number of mobile devices 10 to 1n. The wireless base station 2 has n wireless channels and can accommodate n mobile devices 1 in communication at the same time. In this figure, n mobile stations 11 to 1n are communicating in the radio area RZ, and the radio base station 2 allocates all radio channels to the mobile stations 11 to 1n, leaving no free channels. It is assumed that
[0034]
In this state, when the mobile station 10 newly makes or receives a call in the radio area RZ, or when the mobile station 10 in communication enters the radio area RZ, the radio base station 2 Cannot assign a wireless channel to. In such a case, the radio base station 2 releases the radio channel allocated to any of the communicating mobile stations 11 to 1n based on the priority of each of the mobile stations 10 to 1n, and moves this radio channel. Assigned to the device 10.
[0035]
The priority of each mobile device 1 is determined in advance by a contract with a communication service provider, and these priorities are stored and held in the location register 6 as one of the subscriber information 6b. The priority of the mobile device 1 can be changed by a priority changing operation in the mobile device 1. When a new priority is designated in the mobile device 1, a priority change request signal is transmitted from the mobile device 1. The specification of the priority may be performed, for example, by a user operating a button of the mobile device 1, or the data source may specify the priority for each transmission data one by one. This new priority is stored in the location register 6 as a temporary priority, and is used prior to a priority predetermined by a contract when assigning a wireless channel.
[0036]
For this reason, the user can be assigned a wireless channel with a priority different from the fixed priority assigned to the mobile device 1 according to the contract. For example, the mobile station 1 in which the radio channel is not allocated due to the low priority, or in which the radio channel has been deprived by the other mobile station 1, allocates a new radio channel by increasing the priority. Can receive. If a low priority can be tolerated, the mobile device 1 can be used with a lower priority than the priority at the time of contract.
[0037]
4 to 6 are sequence diagrams illustrating an example of the operation of the mobile communication system in FIG. 1. FIG. 4 illustrates an operation of allocating an empty channel to the mobile device 10. When the mobile device 10 enters a new radio area RZ or is powered on in the radio area RZ, the mobile device 10 sends a position registration request signal to the radio base station 2. This location registration request signal is received and processed by the wireless transmission / reception unit 21, and a location registration request is extracted from the received signal by the signal processing unit 22, and the mobile device 10 is detected.
[0038]
The extracted location registration request from the mobile device 10 is output to the mobility management unit 25. Based on the location registration request, the movement management unit 25 requests the system information management device 5 to register the location in the location register 6 and also requests the subscriber information including the priority information stored in the location register 6. I do.
[0039]
The registration request (LR registration request) to the location register 6 is sent out by the wired network I / F unit 23, transmitted to the system information management device 5 via the wireless control device 3 and the mobile switching center 4, and 6 is stored as position registration information 6a. The subscriber information including the priority information is read out from the subscriber information 6b in the location register 6 by the system information management device 5, transmitted to the radio base station 2, and stored in the intra-area subscriber information storage unit 28. Is done.
[0040]
Note that the mobility management unit 25 determines whether to accept the mobile device 10 based on the subscriber information. For example, if the mobile device 10 is a mobile device that has not made a contract with a communication service provider or is a mobile device that has delinquent the usage fee, the subscriber information from the location register 6 , The mobility management unit 25 refuses to accommodate the mobile device.
[0041]
In the state after the location registration and before the start of communication, that is, when the user performs a priority change operation in the mobile station 10 in the standby state in the radio area RZ, the mobile station 10 issues a priority change request signal. Is transmitted and received by the wireless base station 2. The movement management unit 25 stores the new priority specified by the user in the intra-area subscriber information storage unit 28 as the priority of the mobile device 10. Further, a new priority registration request is output to the system information management device 5, and the priority is registered in the location register 6 as a temporary priority of the mobile device 10.
[0042]
If the user performs a calling operation after such a priority change operation, the mobile device 10 sends a wireless channel acquisition request signal. When the radio base station 2 receives the radio channel acquisition request signal, the mobility management unit 25 reads the subscriber information of the mobile device 10 from the intra-area subscriber information storage unit 28 based on the radio channel acquisition request, and 24 allocates a wireless channel to the mobile device 10 based on the read subscriber information.
[0043]
At this time, the wireless management unit 24 determines whether there is an available channel that can be assigned to the mobile device 10 that has issued the channel acquisition request. As a result, if there is a free channel, the free channel is assigned to the mobile device 10. That is, a line connection request is sent to the wireless control device 3, and if a line connection response to the request is received from the wireless control device 3, the vacant channel is allocated to the mobile device 10. After the assignment of the wireless channel, a wireless channel is established between the mobile station 10 and the wireless base station 2, and the call control unit 26 controls the connection of the call. If there is no free channel, the process proceeds to (1) in FIG.
[0044]
FIG. 5 shows an operation of allocating a wireless channel to mobile device 10 when there is no available channel. In FIG. 4, as a result of the wireless management unit 24 determining an empty channel, if there is no empty channel, the wireless management unit 24 requests the mobility management unit 25 to check the priority.
[0045]
The mobility management unit 25 compares the priority of the mobile device 10 with the priority of each of the mobile devices 11 to 1n that are communicating, that is, each mobile device to which a wireless channel is assigned. As a result, if the priority of any one of the mobile devices 1m (1 ≦ m ≦ n) among the mobile devices 11 to 1n that are communicating is lower than the priority of the changed mobile device 10, the wireless channel Is delivered from the mobile device 1m to the mobile device 10. That is, the channel assignment to the mobile device 10 has priority over securing the wireless channel of the mobile device 1m.
[0046]
Specifically, as a result of comparing the priorities, when the priority of the mobile device 1m is lower than that of the mobile device 10, the mobility management unit 25 sends a line connection request to the wireless control device 3. When a line connection response to this request is received from the wireless control device 3, the wireless management unit 24 gives up the wireless channel from the mobile device 1m to the mobile device 10. The surrender of the radio channel is performed by disconnecting the communication line of the mobile device 1m, releasing the radio channel allocated to the mobile device 1m, and allocating the radio channel to the mobile device 10 to change the communication line of the mobile device 10 Establish. After that, the call control unit 26 performs call connection control for the mobile device 10.
[0047]
FIG. 6 illustrates an operation in a case where there is no available channel and a wireless channel cannot be allocated to the mobile device 10. In FIG. 5, as a result of comparing the priorities by the mobility management unit 25, if there is no communicating mobile device having a lower priority than the mobile device 10, the wireless channel is not allocated to the mobile device 10. At this time, the mobility management unit 25 transmits a free channel absence notification to the mobile device 10.
[0048]
The user of the mobile device 10 that has received the idle channel absence notification operates the mobile device 10 to raise the priority, and then performs the calling operation again, so that the wireless channel can be allocated.
[0049]
According to the present embodiment, it is possible to allocate a wireless channel to each mobile device based on a priority determined in advance by a contract with a communication service provider. Further, the user can operate the mobile device 1 to change the priority of the mobile device 1 and allocate a wireless channel based on a priority different from the priority determined at the time of contract. For this reason, the user can change the priority of the mobile device 1 in accordance with not only the priority determined by the contract but also the line status, communication contents, its importance, and the like. Based wireless channel assignment. Furthermore, since the priority can be changed before the communication of the mobile device is started, it is possible for the user to select the priority at the time of the incoming call in advance according to the situation.
[0050]
In the present embodiment, the assignment of a wireless channel at the time of transmission of mobile device 10 has been described as an example, but the present invention is not limited to such a case. For example, when the mobile station 10 in communication moves between radio areas and a radio channel of a new radio area RZ is allocated to the mobile station 10, or when a radio channel is allocated to the mobile station 10 for an incoming call, Can be applied.
[0051]
Embodiment 2 FIG.
In the first embodiment, an example has been described in which a priority change request signal is transmitted from mobile device 1 before a calling operation in order to change the priority of mobile device 1. On the other hand, in the present embodiment, an example will be described in which the mobile device 1 transmits a priority change request signal during a call operation.
[0052]
7 and 8 are sequence diagrams showing an example of the operation according to the second embodiment of the present invention. FIG. 7 shows an operation when a calling operation is performed in mobile device 10 without performing a priority changing operation.
[0053]
When a wireless channel acquisition request signal is transmitted from the mobile device 10 by a calling operation of the user, if there is a free channel, the wireless management unit 24 allocates the free channel to the mobile device 10. If there is no free channel, the process proceeds to (1) in FIG. 5 (Embodiment 1), and the mobility management unit 25 checks the priority.
[0054]
At this time, since the mobile device 10 has not performed the priority changing operation, the priority at the time of the contract held in the location register 6 is compared with the priority of each of the mobile devices 11 to 1n in communication. You. As a result, if there is a communicating mobile device having a lower priority than the mobile device 10, the wireless channel is surrendered from the mobile device to the mobile device 10. If there is no communicating mobile device having a lower priority than the mobile device 10, the process proceeds to (2) in FIG.
[0055]
FIG. 8 illustrates an operation in a case where there is no available channel and a wireless channel cannot be allocated to the mobile device 10. When a wireless channel cannot be allocated to the mobile device 10, the mobility management unit 25 transmits a free channel absence notification to the mobile device 10.
[0056]
The user of the mobile device 10 that has received the vacant channel absence notification can operate the mobile device 10 to raise the priority and perform the call operation again. By this transmission operation, the mobile station 10 sends out a wireless channel acquisition request signal including a priority change request.
[0057]
When the wireless base station 3 receives the wireless channel acquisition request signal including the priority change request, the mobility management unit 25 assigns a new priority to the area as in the case of receiving the priority change request signal in the first embodiment. The information is stored in the internal subscriber information storage unit 28, and a registration request for the new priority in the location register 6 is output to the system information management device 5.
[0058]
Further, similarly to the case where the wireless channel acquisition request signal is received in the first embodiment, the mobility management unit 25 reads the in-area subscriber information based on the wireless channel acquisition request, and the wireless management unit 24 reads the subscriber information. Based on the received subscriber information, the mobile station 10 is assigned a wireless channel.
[0059]
In this case, after the first calling operation, any of the mobile devices 11 to 1n releases the wireless channel, and if an empty channel is generated, the assignment of the wireless channel, the establishment of the communication line, and the call connection control are performed. On the other hand, if there is no free channel, the process proceeds to (1) in FIG. 5 again, and the wireless management unit 24 issues a priority collation request to the mobility management unit 25. At this time, the priority of the mobile device 10 to be collated is the new priority changed by the channel acquisition request signal.
[0060]
If any of the priorities of the communicating mobile stations 11 to 1n is lower than the new priority of the mobile station 10, the wireless channel assigned to the mobile station is surrendered to the mobile station 10.
[0061]
According to the present embodiment, the priority change request is transmitted from mobile device 10 together with the channel acquisition request signal, so that the priority can be changed at the time of the calling operation.
[0062]
In the present embodiment, the operation of transmitting a channel acquisition request signal including a priority change request from mobile device 10 by performing a priority change operation after notifying the absence of an empty channel has been described as an example. The invention is not limited to such a case. That is, the channel acquisition request signal including the priority change request may be transmitted from the mobile device 10 by the user performing the priority change operation at or before the first transmission operation.
[0063]
Further, in the present embodiment, an example in which the user performs the operation of changing the priority has been described, but the present invention is not limited to such a case. For example, when the transmission operation is performed again within a predetermined time after the notification of the absence of the vacant channel, a channel acquisition request signal including a priority change request specifying a higher priority can be automatically transmitted.
[0064]
Embodiment 3 FIG.
Embodiments 1 and 2 have described examples in which the user changes the priority of the mobile device before starting communication. On the other hand, in the present embodiment, a case will be described in which the user changes the priority during communication between the mobile devices 11 to 1n.
[0065]
FIG. 9 is a sequence diagram showing an example of the operation according to the third embodiment of the present invention. FIG. 9 shows an operation when a priority change operation is performed in the communicating mobile devices 11 to 1n. The operation up to the start of communication is the same as that in the first or second embodiment, and the radio base station 2 allocates a radio channel to each of the mobile devices 11 to 1n based on the priority. Shall be.
[0066]
Radio channels are allocated to the mobile stations 11 to 1n that are communicating. However, in a state where there is no free channel, if another mobile device 10 newly issues a channel acquisition request, it may be necessary to surrender the wireless channel based on the priority.
[0067]
A user who is communicating with the mobile devices 11 to 1n can appropriately change the priority during communication according to the line conditions and communication contents at the time of communication. For example, if the priority is set higher during communication, even if there is no available channel, it is possible to continue to secure a wireless channel without surrendering a wireless channel to a new mobile device 10. Conversely, if the priority is set lower during communication, a wireless channel is secured only until a request to surrender the wireless channel to another mobile device 10 is required.
[0068]
When a user performs a priority change operation in the mobile devices 11 to 1 n during communication, a priority change request signal is transmitted from the mobile devices 11 to 1 n to the wireless base station 2. When the wireless base station 2 receives the priority change request signal, the mobility management unit 25 stores the new priority in the area subscriber information storage unit, as in the case of receiving the priority change request signal in the first embodiment. 28, and outputs a request to register the new priority to the location register 6 to the system information management device 5.
[0069]
According to the present embodiment, the user can change the priority in the communicating mobile devices 11 to 1n. For this reason, it is possible to change the priority according to the line status at the time of communication, the importance of the communication content, etc., particularly according to the status change after the start of communication or the situation grasped by the user after the start of communication. it can.
[0070]
Embodiment 4 FIG.
In the third embodiment, a case is described where the wireless base station 2 that has received the priority change request from the communicating mobile devices 11 to 1n changes the priority of the mobile devices 11 to 1n based on the priority change request. explained. On the other hand, in the present embodiment, a description will be given of a case where the priority change request is rejected when a priority change request is issued from the communicating mobile devices 11 to 1n after the priority change.
[0071]
Assuming that all mobile devices have the same priority, for example, the highest priority, wireless channel assignment according to the priority does not function effectively. That is, in order for this type of communication system to function effectively, it is required on the assumption that the priorities of the mobile units are appropriately dispersed.
[0072]
For this reason, in a communication system in which the priority is determined by the contract form, it is necessary to guide the subscribers so that the priority is appropriately dispersed by making the contract fee and the contract content different depending on the priority. In the mobile device 1, if the communication system is a communication system in which the priority can be changed, the subscribers are guided so that the priorities are appropriately dispersed by, for example, making the charging method during communication different according to the priority. There is a need to.
[0073]
However, in a communication system in which the priority can be changed not only before the start of communication but also during the communication, it is possible to use such that the priority at the time of calling is increased and the priority is lowered after the start of communication. Such a use method is not preferable because it gives trouble to other users.
[0074]
Also, if a plurality of users make such a priority change in the same radio area RZ, the mobile stations will alternately compete for radio channels, and it is considered that the situation will be even more unfavorable. . That is, since only the priorities at the time of calling each other are higher than the others, it is considered that the wireless channels alternately compete for each other and the resources of the communication system cannot be effectively used.
[0075]
For this reason, in the communication system according to the present embodiment, when a priority change operation is performed and a wireless channel is obtained, the change of the priority during the communication is rejected. In particular, when a wireless channel is obtained by changing the priority to a higher priority than the contract, the change of the priority during the communication is rejected. In particular, changes that lower the priority during communication are rejected.
[0076]
FIG. 10 is a sequence diagram showing an example of the operation of the communication system according to Embodiment 4 of the present invention. The operation up to the start of communication is the same as in the first or second embodiment. When the user performs a priority change operation in the communicating mobile devices 11 to 1 n, a priority change request signal is transmitted from the mobile devices 11 to 1 n to the wireless base station 2 as in the third embodiment. Is done. When the wireless base station 2 receives this priority change request signal, the mobility management unit 25 outputs a registration request to the location register 6 with a new priority to the system information management device 5.
[0077]
The location register 6 stores and retains information on the priority of each mobile device at the start of a call. The terminal control device 5 determines whether or not the priorities of the mobile devices 11 to 1n at the start of communication are different from the priorities according to the contract based on this information. That is, it is determined whether or not the priority has been changed before the start of communication. As a result, if communication has been started after the priority change, a registration rejection notification is returned from the system information management device 5 to the wireless base station 2, and the priority change request during the communication is rejected.
[0078]
If the priority change is not rejected, the system information management device 5 stores the new priority in the location register 6 and the movement management unit 25 stores the new priority in the intra-area subscriber information storage unit 28. It is stored and the priority is changed.
[0079]
According to the present embodiment, by rejecting the priority change during communication to the mobile device that has started the communication by changing the priority, while providing a wide range of priority change opportunities to the user, The adverse effects associated with the abuse can be prevented. For example, by increasing the priority only at the time of starting communication, it is possible to prevent other users from being troubled. Further, it is possible to avoid a situation in which users mutually compete for a wireless channel.
[0080]
Embodiment 5 FIG.
In the present embodiment, when a wireless channel has been surrendered based on the priority between the mobile devices 1m and 10, a nuisance fee is paid to the subscriber of the mobile device 1m that has released the wireless channel, and the wireless channel is allocated. A communication system for charging a special fee to the subscriber of the mobile device 10 receiving the service will be described.
[0081]
FIG. 11 is a sequence diagram showing an example of the operation of the communication system according to the fifth embodiment. In the case where there is no available channel, the mobility management unit 25 checks the priority, and the radio management unit 24 allocates a channel. Are performed in the same manner as in FIGS. 4 and 5 (Embodiment 1) or FIGS. 7 and 8 (Embodiment 2).
[0082]
Thereafter, the communication line of the mobile device 1m having a lower priority than the mobile device 10 is disconnected, and the wireless channel is released. At this time, the subscriber of the mobile device 1m is paid a harassment fee due to the incomplete operation of the communication service. Specifically, the call control unit 26 transmits a harassment fee processing signal as a charging process signal to the terminal management device 5, and the charging information 6c in the location register 6 indicates that the subscriber of the mobile device 1m Information that payment has been received is stored.
[0083]
Next, the communication line of the mobile device 10 is established by the released wireless channel. At this time (or at the time when the call connection is established thereafter), a special charge (extra charge) associated with acquiring the wireless channel surrendered by the other mobile device is charged to the subscriber of the mobile device 10. . Specifically, a special charge processing signal as a charge processing signal is transmitted from the call control unit 26 to the terminal management device 5, and the charge information 6c in the location register 6 includes the special charge for the subscriber of the mobile device 10. Information that the user has been charged is stored.
[0084]
According to the present embodiment, when a wireless channel is surrendered between mobile stations, a billing processing signal is generated, a harassment fee is paid to the mobile station that has released the wireless channel, and the mobile station is assigned a wireless channel. A special fee is charged to the mobile device. For this reason, the discomfort of the user of the mobile device whose communication line has been disconnected can be compensated for by the inconvenience, and alleviated.
[0085]
Further, the subscriber of the mobile station that has obtained the wireless channel pays a special fee, so that it is possible to suppress an easy change to a higher priority. In addition, many subscribers will be able to change the priority according to the situation by suppressing the selection of contracts with low basic charges and low priority, assuming abuse of priority change, Appropriate operation can be performed for the entire communication system.
[0086]
Embodiment 6 FIG.
In the fifth embodiment, an example has been described in which, when a wireless channel is surrendered, a special fee is charged to a subscriber of a mobile station that has acquired a wireless channel. On the other hand, in the present embodiment, a case will be described in which a special fee is charged to the subscriber of the mobile device that has performed the calling operation after the priority is changed.
[0087]
FIG. 12 is a sequence diagram showing an example of the operation of the communication system according to the sixth embodiment. In this figure, when the user performs a call operation and a channel acquisition request signal is transmitted from the mobile device 10, there is no vacant channel in the wireless area, and as a result of comparing the priorities, the mobile device 1m is moved. A state in which a wireless channel is handed over to the device 10 is shown.
[0088]
At this time, the subscriber of the mobile device 10 is charged a special fee (surcharge) for changing the priority and acquiring the wireless channel. Specifically, a special fee processing signal as a billing process signal is transmitted from the mobility management unit 25 to the terminal management device 5, and a special fee is provided to the subscriber of the mobile device 10 in the billing information 6 c in the location register 6. Information that the user has been charged is stored.
[0089]
Here, a special fee is charged when the calling operation is performed according to the changed priority, particularly, a priority higher than the priority at the time of contract. Therefore, not only when the wireless channel released by the other mobile device 1m is allocated, but also when the original free channel is allocated, when the wireless channel is allocated and the communication line is established, Alternatively, a special fee is charged when the call connection is established thereafter.
[0090]
According to the present embodiment, a special fee is charged to the mobile station that has obtained the wireless channel by changing the priority. For this reason, easy change to a higher priority can be more effectively suppressed. In particular, it is possible to effectively prevent many subscribers from selecting a contract with a low basic fee and a low priority on the assumption that the priority change is abused. Accordingly, it is possible to appropriately operate the entire communication system while enabling the priority to be changed according to the situation.
[0091]
【The invention's effect】
According to the present invention, it is possible to provide a radio channel allocation method that enables a user to select a priority according to a situation and allocates a radio channel to a mobile device according to the selected priority. Further, it is possible to provide a base station apparatus and a radio communication terminal capable of realizing such a radio channel assignment method.
[0092]
It is still another object of the present invention to provide a wireless channel allocation method that gives a user an opportunity to change the priority including during communication and prevents abuse of the priority change. It is another object of the present invention to provide a base station apparatus and a radio communication terminal capable of realizing such a radio channel assignment method.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of a system configuration of a mobile communication system according to a first embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration example of a wireless base station 2 in FIG.
FIG. 3 is a conceptual diagram showing an example of a relationship between a wireless area RZ formed by a wireless base station 2 and a large number of mobile devices 10 to 1n.
FIG. 4 is a sequence diagram showing an example of an operation of the mobile communication system of FIG. 1, showing an operation of allocating an empty channel to the mobile device 10.
FIG. 5 shows an operation of allocating a wireless channel to the mobile device 10 when there is no available channel.
FIG. 6 shows an operation in a case where there is no available channel and a wireless channel cannot be allocated to the mobile device 10.
FIG. 7 is a sequence diagram showing an example of an operation according to Embodiment 2 of the present invention, and shows an operation when a calling operation is performed in mobile device 10 without performing a priority changing operation.
FIG. 8 shows an operation in a case where there is no available channel and a wireless channel cannot be allocated to the mobile device 10.
FIG. 9 is a sequence diagram showing an example of an operation according to the third embodiment of the present invention, showing an operation when a priority change operation is performed in a mobile station 11 during communication.
FIG. 10 is a sequence diagram showing an example of an operation of the communication system according to the fourth embodiment of the present invention.
FIG. 11 is a sequence diagram showing an example of an operation of the communication system according to the fifth embodiment of the present invention.
FIG. 12 is a sequence diagram showing an example of an operation of the communication system according to the sixth embodiment of the present invention.
[Explanation of symbols]
1,10-1n, 1m mobile station (mobile communication terminal), 2 base station apparatus (BS),
3 radio control unit (RNC), 4 mobile switching center (MSC),
5 system information management device, 6 location register, 20 antennas,
21 wireless transmission / reception unit, 22 signal processing unit, 23 wired network I / F unit,
24 radio management unit, 25 mobility management unit, 26 call control unit,
27 channel allocation information storage unit, 28 area subscriber information storage unit,
RZ wireless area

Claims (11)

When allocating a wireless channel to a mobile communication terminal, the base station apparatus releases the wireless channel allocated to the mobile communication terminal that is communicating based on the priority of the mobile communication terminal, and performs a new mobile communication. In a wireless channel assignment method assigned to a terminal,
When a mobile communication terminal is detected, the base station device obtains a predetermined priority for the mobile communication terminal from the system information management device, and retains the priority in association with the mobile communication terminal. Steps and
When a priority change request is output from the mobile communication terminal, the base station device changes the priority held for the mobile communication terminal that made the priority change request, a priority change step,
When there is no radio channel that can be assigned to the mobile communication terminal, the base station apparatus compares the priority of this mobile communication terminal with the priority of another mobile communication terminal that is communicating, and a priority comparing step. ,
A wireless channel allocating method comprising: releasing a wireless channel allocated to another mobile communication terminal in communication based on the comparison result, and allocating a wireless channel to the mobile communication terminal. The wireless channel assignment method according to claim 1, wherein the priority change request is output based on a priority change operation performed by the mobile communication terminal before starting communication. The wireless channel assignment method according to claim 1, wherein the priority change request is output based on a priority change operation during communication of the mobile communication terminal. The priority change request is output based on a priority change operation before and during communication of the mobile communication terminal,
In the priority changing step, the mobile communication terminal that has output the priority change request before the start of communication, if the priority change request is output again during communication, rejecting the priority change, The wireless channel assignment method according to claim 1, wherein When the surrender of the wireless channel is performed from the first mobile communication terminal to the second mobile communication terminal, a nuisance fee is paid to the subscriber of the first mobile communication terminal and the second mobile communication is performed. The wireless channel allocation method according to claim 1, further comprising a charging step of charging a special charge to a subscriber of the terminal. If the mobile communication terminal that has output the priority change request before the start of communication performs a calling operation and is assigned a wireless channel, the mobile communication terminal performs a charging process step of charging a special charge to the subscriber of the mobile communication terminal. The method according to claim 2, further comprising: An in-area subscriber information storage unit that holds the priority of the mobile communication terminal;
Based on the detection result of the mobile communication terminal, a predetermined priority for the mobile communication terminal is obtained from the system information management device and stored in the area subscriber information storage unit,
Based on a priority change request from the mobile communication terminal, a movement management unit that changes the priority held in the area subscriber information storage unit,
When allocating a radio channel to a mobile communication terminal, if there is no radio channel that can be allocated, the priority stored in the intra-area subscriber information storage unit for this mobile communication terminal and another mobile communication terminal that is communicating. Compare the degrees,
A base station apparatus, comprising: a wireless management unit that releases a wireless channel of another mobile communication terminal currently communicating based on the comparison result and allocates the wireless channel to the mobile communication terminal. The mobility management unit rejects the priority change when the priority change request is output again during communication from the mobile communication terminal that outputs the priority change request before the start of communication. The base station device according to claim 7. The above-mentioned mobility management unit, when performing surrender of a wireless channel from the first mobile communication terminal to the second mobile communication terminal, charges a special charge to a subscriber of the second mobile communication terminal, The base station apparatus according to claim 7, wherein the base station apparatus generates a charging processing signal for paying a troublesome fee to a subscriber of the mobile communication terminal. When the mobile communication terminal that outputs the priority change request before the start of communication performs a calling operation and is assigned a wireless channel, the mobility management unit charges a special fee to the subscriber of the mobile communication terminal. The base station apparatus according to claim 7, wherein the base station apparatus generates a charging processing signal for performing the charging. If a wireless channel cannot be allocated at the time of a wireless channel acquisition request by the mobile communication terminal, the wireless channel of the communicating mobile communication terminal is released based on the priority of each mobile communication terminal, and the wireless channel is acquired. A mobile communication terminal applied to a mobile communication system to be assigned to the mobile communication terminal that made the request,
A mobile communication terminal characterized in that a user can designate a priority different from a predetermined priority, and a priority change request is transmitted to the base station device when the priority is changed.

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