JP2003115849A - Communication system and communication method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication system and a communication method, in which the control of a communication protocol is simplified, a communication service network optimal for respective high speed and low speed transmission services is constructed, the respective services can be stably provided and the services can be provided in low prices by optimal facility investment. SOLUTION: A communication system 1 is composed of a high speed communication service network 2, low speed communication service network 3, user information database 4, additional service information database 5 and common line 6. The high speed communication service network 2 is composed of a high speed wireless link 21, high speed wireless access network 22 and high speed core network 23. The low speed communication service network 2 is composed of a low speed wireless link 31, low speed wireless access network 32 and low speed core network 33.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a communication system and a communication method. The present invention particularly relates to a communication system that performs a high-speed transmission service that transmits information at a high transmission speed and a low-speed transmission service that transmits information at a low transmission speed, and a communication method using the communication system.

[0002]

2. Description of the Related Art In recent years, IMT-2000 (International Mob
ile Telecommunications 2000) provides a service for performing data communication and voice communication at an outdoor maximum transmission rate of 384 kbps and an indoor maximum transmission rate of 2 Mbps. Services provided by this IMT-2000 can be broadly classified into high-speed transmission services and low-speed transmission services. Generally, the high-speed transmission service and the low-speed transmission service have different information to be transmitted and required service quality. For high speed transmission services,
Data information is transmitted, and although some transmission delay does not matter, a transmission error is a fatal error. On the other hand, in the low-speed transmission service, voice information is mainly transmitted, and although some transmission errors can be tolerated, transmission delay becomes a problem.
Therefore, the service quality needs to meet the requirements of each service. In the high-speed transmission service, higher transmission speed is required due to the diversification of service contents. On the other hand, in the low-speed transmission service, the voice information is generally band-compressed in order to effectively use the radio frequency resources, and the transmission speed of the compressed voice information becomes very low.

Conventionally, as an IMT-2000 communication system that provides the above-mentioned high-speed transmission service and low-speed transmission service, a radio access network (Radio Access Network) is used.
work, hereafter referred to as "RAN", W-CDMA (Wideba
nd Code Division Multiple Access, using a core network (Core Network)
In k), there is a system using an ATM network (Asynchronous Transfer Mode). FIG. 9 is a block diagram showing the configuration of a conventional communication system 301.
The communication system 301 includes a wireless link 302 and a RAN3.
03 and an ATM network 304. A terminal device 305 such as a data communication terminal 305a or a voice communication terminal 305b is connected to the communication system 301. Further, the communication system 301 connects to other communication networks such as the Internet server 9 and the intranet 10 via the gateway 8 to provide a POI (Point Of Interface, interconnection point).
The mobile communication network 12 and the fixed network 13 are connected via 11 to other communication networks.

As shown in FIG. 9, the ATM network 304 includes a service control unit 304a and a position information database 304.
b, subscriber level switch 304c, ATM trunk line 3
04f and a gateway relay ladder exchange 304g. The subscriber level switching system 304c and the gateway relay level switching system 304g are respectively connected to the packet switching units 304d, 304d.
A circuit switching / packet switching integrated node having 304h and circuit switching units 304e and 304i. The service control unit 304a also performs quality of service control (hereinafter referred to as "QoS control") to guarantee the quality of service of each of the high speed transmission service and the low speed transmission service. QoS control is End-to-E
Although it is necessary to guarantee it by nd, the RAN 303 and the ATM network 304 are realized by utilizing the traffic capability of the ATM network 304. At this time, the communication protocol for matching the service quality between the application layer and the ATM layer is used for high-speed transfer of data information,
This is different from the case of transferring high-efficiency coded speech information of a short frame at low speed. That is, in the high speed transmission service and the low speed transmission service, different protocols corresponding to the respective services are used. Therefore, the service control unit 3
04a guarantees the quality of service of each
It controls those communication protocols.

As a result, the ATM network 304 can realize circuit switching and packet switching with the same architecture, and integrates the QoS control and operation of the high speed transmission service that handles data information and the low speed transmission service that handles voice information. It can be carried out. That is, the ATM network 304 is an integrated network that performs both circuit switching and packet switching, and can provide high-speed transmission services and low-speed transmission services without distinguishing between them. As a result, the wireless link 3 that provides the information transmitted from the terminal device 305 to the ATM network 304.
02 or a RAN 303 including a base station 303a that establishes a wireless link 302 with a terminal device and a base station control device 303b that controls the base station, distinguishes high-speed transmission services from low-speed transmission services. You don't have to. From the above, in the communication system 301, there is an advantage that the high-speed transmission service and the low-speed transmission service described above can be provided by the same wireless link 302 or ATM network 304 without making a distinction.

[0006]

However, since the conventional communication system 301 provides the high-speed transmission service and the low-speed transmission service by the same communication network, that is, the wireless link 302 and the ATM network 303, the high-speed transmission service and the low-speed transmission service are provided. There were the following problems. First, in communication systems that require ever-increasing speed, low-speed transmission services transmitted over the same communication network are affected by the lack of network resources due to data traffic, resulting in connection quality (call loss).
However, there is a problem in that stable low-speed transmission service may not be provided. As described above, as a result of constructing a communication system that is compatible with a high-speed transmission service and a low-speed transmission service in which the information to be transmitted and the intended use are different in the same communication network, it is difficult to construct an optimal communication system for each service. And one of the services becomes
There is a problem that a part that affects the other service occurs and a stable service cannot be provided. In addition, there is a problem in that equipment for coordinating different high-speed transmission services and low-speed transmission services in the same communication network is required, which increases equipment investment and makes it difficult to provide services at low charges. .

Second, the Q performed by the service control unit 304a
Although the quality of service of the high-speed transmission service and the low-speed transmission service is guaranteed by the oS control, the high-speed transmission service and the low-speed transmission service use different communication protocols corresponding to the respective service qualities. Therefore, the communication system has a problem that it is necessary to perform complicated and sophisticated communication protocol control in order to guarantee different service qualities required for each service application provided. Then, the communication system may not be stable under the load of the control of the complicated communication protocol. Further, it is necessary to provide a complicated control means for realizing the complicated control, and in order to construct a communication system having the complicated control means, the capital investment is increased and the service is provided at a low charge. There is also a problem that it becomes difficult.

Therefore, the present invention simplifies the control of the communication protocol, constructs the optimum communication service network for each of the high-speed transmission service and the low-speed transmission service, and can stably provide each service, and the optimum capital investment. It is an object of the present invention to provide a communication system and a communication method capable of performing a service and providing a service at a low charge.

[0009]

A communication system according to the present invention is transmitted between a terminal device and a high speed communication service network for transmitting information transmitted to and from the terminal device at a high transmission speed. And a low-speed communication service network for transmitting information at a transmission speed lower than that of the high-speed communication service network. A high-speed communication service network is established between a high-speed dedicated base station that receives information transmitted to and from a terminal device and the high-speed dedicated base station and the terminal device, and wirelessly transmits information at a high transmission speed. A high-speed wireless link for transmission and a high-speed communication network for acquiring information to be transmitted between the terminal device and the high-speed wireless link and transmitting the information at a high transmission speed are provided. On the other hand, a low-speed communication service network is established between a low-speed dedicated base station that receives information transmitted to and from a terminal device and the low-speed dedicated base station and the terminal device, and wirelessly transmits information at a low transmission rate. It is characterized by including a low-speed wireless link for transmission, and a low-speed communication network for acquiring information to be transmitted to and from a terminal device via the low-speed wireless link and transmitting the information at a low transmission speed.

According to the communication system of the present invention, the information transmitted between the high speed dedicated base station and the terminal device is transmitted at a high speed by the high speed wireless link. When wirelessly transmitted, the information is transmitted at a high transmission speed by a high speed communication network. On the other hand, when the information transmitted between the terminal device and the terminal device is wirelessly transmitted at a low transmission speed by the low speed wireless link established between the low speed dedicated base station and the terminal device, the information is transmitted by the low speed communication network. It is transmitted at a low transmission rate. That is,
The communication system according to the present invention includes both a wireless link that wirelessly transmits information transmitted to and from a terminal device and a communication network that transmits information transmitted to and from the terminal device via the wireless link. , High-speed transmission of information (hereinafter referred to as "high-speed transmission") and low-speed transmission (hereinafter referred to as "low-speed transmission"). The communication service network and the low-speed communication service network for low-speed transmission are constructed separately.

Therefore, the high-speed communication service network can be constructed optimally for high-speed transmission services, and the low-speed communication service network can be constructed optimally for low-speed transmission services, and each service can be provided stably. Further, it is possible to optimize the equipment investment efficiency and provide the service at a low charge, because there is no need for equipment for coexisting different high speed transmission service and low speed transmission service in the same communication network. or,
Since the high-speed communication service network and the low-speed communication service network are separately constructed, the control of the communication protocol for guaranteeing the required quality of service may be performed independently in each service network. As a result, control of the communication protocol is simplified. Therefore, the load due to the control of the communication protocol is reduced, and a stable communication system can be provided. Further, since a complicated control means is not required, the equipment investment can be reduced and the service can be provided at a low charge.

The information transmitted by the high speed communication service network is mainly data information, and it is preferable that the high speed communication network uses a communication protocol suitable for data communication. On the other hand, the information transmitted by the low speed communication service network is mainly voice information, and it is preferable that the low speed communication network uses a communication protocol suitable for voice communication. According to this, the high speed communication service network can guarantee the service quality suitable for the data communication, and the low speed communication service network can guarantee the service quality suitable for the voice communication service.

Further, it is preferable that the high speed communication network has a high speed transmission means for transmitting information at a high transmission speed, and the low speed communication network has a low speed transmission means for transmitting information at a low transmission speed. According to this, the high speed communication network can provide the high speed transmission service by the high speed transmission means, and the low speed communication network can provide the low speed transmission service by the low speed transmission means. The high-speed transmission means can use, for example, a packet switching means, and the low-speed transmission means can use, for example, a circuit switching means.

The high-speed dedicated base station and the low-speed dedicated base station are
It is preferable to have base station numbers of a common number system that are assigned without being distinguished from each other. According to this, the communication system can manage and control both the high-speed dedicated base station and the low-speed dedicated base station, and can manage the position information of the terminal device 7, using one type of base station number. Therefore, it is possible to reduce the load of management and control performed by the communication system and provide a stable service. Further, since the base station number of the common number system is assigned without distinguishing between the high speed dedicated base station and the low speed dedicated base station, the terminal device is a high speed dedicated base station or a low speed dedicated base station. It is possible to request the base station to establish a wireless link without being aware of whether it is a dedicated base station. Therefore, the user does not need to perform the troublesome operation of distinguishing between the high speed dedicated base station and the low speed dedicated base station.

Further, when a base station number of a common number system is given to the high speed dedicated base station and the low speed dedicated base station, the high speed dedicated base station and the low speed dedicated base station are transmitted from the terminal device and are either high speed or low speed. It is preferable to receive a control signal designating whether to transmit information at a transmission rate and establish either a high-speed wireless link or a low-speed wireless link with a terminal device according to the received control signal. According to this, even when one type of base station number is used, the high-speed dedicated base station and the low-speed dedicated base station receive the control signal designating the high-speed transmission or the low-speed transmission, so that the terminal device can perform high-speed wireless transmission. Whether the link or the low speed wireless link is desired to be established can be grasped, and an appropriate wireless link can be established. Also, the user who uses the terminal device transmits the control signal to the base station by transmitting the control signal without being aware of whether the base station is a high-speed dedicated base station or a low-speed dedicated base station. Can request establishment.

The high-speed dedicated base station has a dedicated base station number assigned to the high-speed dedicated base station, and the low-speed dedicated base station has a dedicated base station number assigned to the low-speed dedicated base station. You may have. According to this, although it is necessary for the terminal device to request establishment of a wireless link in consideration of whether it is a high-speed dedicated base station or a low-speed dedicated base station, the control signal as described above is transmitted. There is no need to do it. Therefore, the process performed by the terminal device for establishing the wireless link can be simplified, and the load of the process performed by the terminal device can be reduced.

Further, it is preferable that the communication system includes user information holding means for holding user information regarding a user who uses the terminal device, and the high speed communication service network and the low speed communication service network share the user information holding means. . According to this, the communication system can collectively manage the user information by one user information holding unit, and the configuration of the entire communication system can be simplified. Therefore, it is possible to further reduce the load of control performed by the communication system, suppress the equipment investment, and provide the service at a low charge. Furthermore,
The high-speed communication service network and the low-speed communication service network can share user information. Therefore, for example, the low-speed communication service network can grasp the status of the terminal device even while the terminal device is provided with the high-speed transmission service by the high-speed communication service network.

The user information held in the user information holding means includes a terminal identification number for identifying the terminal device.
Conventionally, individual terminal identification numbers are used in different communication networks, and different communication networks cannot be used with one type of number. Therefore, the user needs to properly use the individual terminal identification number according to the communication network desired to be used. However, when the high speed service communication network and the low speed service communication network share the user information holding means as described above,
Since the user information can be collectively managed, the terminal identification number can be a common number system assigned to the terminal device without distinguishing between the high speed communication service network and the low speed communication service network. Therefore, the communication system can give the terminal device one type of terminal identification number that enables the terminal device to use both the high-speed communication service network and the low-speed communication service network. Therefore, the user of the terminal device can use both service communication networks without being aware of whether to use the high-speed communication service network or the low-speed communication service by using one type of terminal identification number. You can
In addition, the telecommunications carriers who build and manage the communication system are
The user can be collectively billed by using the high-speed communication service network and the low-speed communication service network, the cost related to the bill can be reduced, and the service can be provided at a lower charge.

Further, it is preferable that the user information includes use information in which the user preselects the use of only the high speed communication service network, the use of only the low speed communication service network, or the use of both of them. According to this, each of the high speed communication service network and the low speed communication service network can provide the service desired by the user by referring to the usage information held in the user information holding means. Further, the user can select and use the communication service network according to the desired service.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) An embodiment of the present invention will be described with reference to the drawings. Figure 1
FIG. 3 is a block diagram showing a configuration of a communication system 1 according to the first embodiment. As shown in FIG. 1, the communication system 1 includes a high speed communication service network 2 and a low speed communication service network 3.
, A user information database 4, a supplementary service information database 5, and a common line 6. In the present embodiment, the same telecommunications carrier performs construction and operation management of the communication system 1. The same telecommunications carrier separately constructs the high-speed communication service network 2 and the low-speed communication service network 3, and provides a service in which the high-speed transmission service and the low-speed transmission service are integrated. In this way, the same telecommunications carrier constructs the communication system 1 and provides a service in which the high-speed transmission service and the low-speed transmission service are integrated. It is possible to collectively manage the services to be provided, the information used for providing the services, the charges incurred due to the provision of the services, and the like.

The high-speed communication service network 2 provides a high-speed transmission service for transmitting information transmitted to and from the terminal device 7 at a high transmission speed. The information transmitted by the high speed communication service network 2 is mainly data information, and the high speed communication service network 2 mainly provides data communication services. The high-speed communication service network 2 preferably has a transmission capacity 10 to 20 times that of the low-speed communication service network 3, and preferably has a transmission speed capable of supporting multimedia communication such as the Internet. Further, it is preferable that the high speed communication service network 2 has a band and a transmission rate that can provide a broadband multimedia service. The high speed communication service network 2 is connected to other communication networks such as the Internet server 9 and the intranet 10 via the gateway 8. Further, it is preferable that the high-speed communication service network 2 is constructed only in an area that requires data communication, rather than nationwide, in order to improve capital investment efficiency. For example,
It is preferable that the high-speed communication service network 2 is constructed mainly in a densely populated area such as an urban area where many uses thereof can be considered.

The high speed communication service network 2 mainly provides a best effort type high speed transmission service. The best-effort service is a communication service that does not guarantee communication quality such as delay and bandwidth reservation. According to this, compared to the guarantee type (quality assurance type), less equipment and personnel are required for the service, and high-speed transmission service can be provided at a low charge. Also, sent from the terminal device 7,
Since the amount of information transmitted by the high-speed communication service network 2 varies, it is preferable that the high-speed communication service network 2 perform a pay-as-you-go bill for charging a charge according to the amount of data to be transmitted.

The low-speed communication service network 3 provides a low-speed transmission service for transmitting information transmitted between itself and the terminal device 7 at a transmission speed lower than that of the high-speed communication service network 2. The information transmitted by the low-speed communication service network 3 is mainly voice information, and the low-speed communication service network 3 mainly provides a voice communication service. The low-speed communication service network 3 mainly provides services provided at a transmission speed of about the voice band. In addition to the voice communication service, the low-speed communication service network 3 may perform a moving image distribution service that can be used at a transmission speed similar to that of the voice communication service, and data communication such as mail transmission. The low speed communication service network 2 has a POI (Point Of
Interface (interconnection point) 11 through mobile communication network 1
2 and fixed networks 13 and other communication networks. The low-speed communication service network 3 can be designed exclusively for low-speed transmission services, and no equipment for high-speed transmission services is required, so that each equipment investment can be reduced. Therefore, a low-speed transmission service can be provided at a low charge, and a wide service area can be secured. The voice communication service is a highly public service in which users who want to use it are not limited to users in densely populated areas such as urban areas. From the above, it is preferable to construct the low-speed communication service network 3 throughout Japan, including regions such as the mountains where population density is low.

Further, the low speed communication service network 3 mainly provides a voice communication service, so that the required band is determined.
Therefore, the low speed communication service network 3 provides a guarantee type low speed transmission service. The guarantee type service is a communication service that guarantees communication quality such as delay and bandwidth reservation. According to this, the minimum guaranteed communication speed, how long the interruption time due to maintenance or failure can occur in a maximum of one year, whether the transmitted information can be reliably delivered to the other party, the transmitted information was decided. Communication quality such as whether it reaches the other party in time, whether data can be given priority, whether security is ensured, etc. is guaranteed.

The high speed communication service network 2 includes a high speed wireless link 21 and a high speed wireless access network (hereinafter referred to as "high speed R
22) and a high speed core network 23. On the other hand, the low-speed communication service network 2 includes a low-speed wireless link 31, a low-speed wireless access network (hereinafter referred to as “low-speed RAN”) 32, and a low-speed core network 33. The high-speed RAN 22 is composed of a plurality of high-speed dedicated base stations 22a and a high-speed dedicated base station controller 22b for controlling them. High-speed RAN22
It is a network that establishes a high-speed wireless link 21 between the terminal device 7 and the high-speed dedicated base station 22a, receives information transmitted between the terminal device 7 and the high-speed core network 23, and provides high-speed communication. It is a network that controls and terminates the wireless protocol in the service network 2. on the other hand,
The low speed RAN 32 includes a plurality of low speed dedicated base stations 32a and a low speed dedicated base station controller 32b for controlling them. The low-speed RAN 32 is a network that receives information transmitted to and from the terminal device 7 and provides it to the low-speed core network 33, and is a network that controls and terminates the wireless protocol in the low-speed communication service network 3.

The high-speed wireless link 21 is established between the terminal device 7 and the high-speed dedicated base station 22a, and wirelessly transmits information at a higher transmission speed than that of the low-speed wireless link 31. The high-speed wireless link 21 preferably has a transmission capacity that is about 10 to 20 times as high as the low-speed transmission performed by the low-speed wireless link 31. The high-speed wireless link 21 uses a wide bandwidth and uses a wide bandwidth as a multiple access method in which radio waves of the same frequency band are shared by a plurality of terminal devices 7 and communicates by assigning different codes to each channel. W-CDMA to become
(Wideband Code Division Multiple Access) method, or divides a high-speed information signal into multiple low-speed signals that are not affected by delay distortion, modulates them, and transmits them as narrow-band signals to deteriorate transmission quality. OFDM (Orthgonal Furequency Division Multipl)
The transmission speed can be increased by using exing, orthogonal frequency division multiplexing, etc.

The low-speed wireless link 31 is established between the terminal device 7 and the low-speed dedicated base station 32a, and wirelessly transmits information at a transmission speed lower than that of the high-speed wireless link 21. A narrow band is sufficient for the low-speed wireless link 31 as long as it has a band necessary for transmitting voice. The low-speed wireless link 31 does not require a PCM (Pulse Code Modulation) system, an ADPCM (Adaptive Pulse Code Modulation) system that performs adaptive prediction and adaptive quantization of a prediction error signal for each sample value, and does not need to extract sound source pitch information. CELP (Code Excited) that can synthesize high quality speech at bit rate
By using a voice encoding technique such as Linear Prediction), the band required for transmission of voice information itself can be further narrowed. Even if each channel of the low-speed wireless link 31 has a narrow band, it is preferable that the low-speed wireless link 31 secures a large number of channels in case of a large number of calls such as an event occurrence and a disaster. According to this, the low-speed wireless link 31 can avoid congestion. In order for the low-speed wireless link 31 to secure a large number of channels, TDMA (Time Division Multiple Acce
ss, time division multiple access) method, or FDMA that multiplexes by dividing frequency and assigning to each channel
A multiple access method such as a (Frequency Division Multiple Access) method can be used. The band of each channel may be about 25 kHz.

The high speed dedicated base station 22a establishes a high speed wireless link 21 with the terminal device 7. The high-speed dedicated base station 22a receives high-speed transmitted information such as data information transmitted to and from the terminal device 7 via the high-speed wireless link 21, and via the high-speed dedicated base station controller 22b. , High-speed core network 23. On the other hand, the low speed dedicated base station 32 a is connected to the terminal device 7 via the low speed wireless link 31.
Establish. In addition, the low-speed dedicated base station 32a is the terminal device 7
Low-speed information such as voice information transmitted between the low-speed core network 33 and the low-speed core network 33 is received via the low-speed dedicated base station controller 32b.
To provide.

In this embodiment, the high-speed dedicated base station 22a and the low-speed dedicated base station 32a have base station numbers (hereinafter referred to as "common base station numbers") of a common number system that are assigned without distinction from each other. is doing. Therefore, the high speed dedicated base station 22a and the low speed dedicated base station 32a transmit the common base station number to the terminal device 7. The terminal device 7 receives the transmitted common base station number and requests either the high speed dedicated base station 22a or the low speed dedicated base station 32a to establish a wireless link. At that time, since one type of common base station number is used, which of the high-speed dedicated base station 22a and the low-speed dedicated base station 32a the terminal device 7 wants to request to establish a wireless link with only the common base station number? Cannot be specified. Therefore, the terminal device 7 is
a to both the low-speed base station 32a and the low-speed dedicated base station 32a, a control signal designating high-speed transmission (hereinafter referred to as "high-speed transmission designation control signal"), and low-speed transmission to low-speed transmission. A position registration request is made by transmitting a control signal (hereinafter, referred to as "low-speed transmission designation control signal") designating the number together with a common base station number and a number for identifying the terminal device 7 (hereinafter referred to as "terminal identification number"). .. Here, the location registration request is a request to register the location of the terminal device 7, that is, the common base station number representing the cell in which the terminal device 7 is present, in the user information database 4 (hereinafter referred to as “location registration”). It is to be.

Then, the high-speed dedicated base station 22a and the low-speed dedicated base station 32a receive the high-speed transmission designation control signal or the low-speed transmission designation control signal transmitted from the terminal device 7, so that the terminal device 7 can receive the high-speed wireless link 21. Alternatively, it is possible to know which one of the low-speed wireless links 31 is desired to be established. Then, the high speed dedicated base station 22a and the low speed dedicated base station 32a
Establishes a wireless link in response to the control signal. Specifically, the high speed dedicated base station 22a and the low speed dedicated base station 32a
Provides the received control signals to the high-speed dedicated base station controller 22b and the low-speed dedicated base station controller 32b, respectively, and responds to the control signals according to the control of the high-speed dedicated base station controller 22b and the low-speed dedicated base station controller 32b. Establish a wireless link. For example, the high-speed dedicated base station 22a and the low-speed dedicated base station 32a set the high-speed wireless link 21 for the control signal transmitted from the terminal device 7 under the control of the high-speed dedicated base station controller 22b and the low-speed dedicated base station controller 32b. A response to that effect (hereinafter referred to as “high speed wireless link setting response”) and a response to the effect of setting the low speed wireless link 31 (hereinafter referred to as “low speed wireless link setting response”) are transmitted to the terminal device 7. In addition, a response indicating that a response to the high-speed wireless link setting response or the low-speed wireless link setting response transmitted from the terminal device 7 has been received (hereinafter referred to as “acknowledgement response”) is received, and the high-speed dedicated base station control device 22b or low-speed dedicated It is provided to the base station controller 32b.

The high speed dedicated base station controller 22b controls a plurality of high speed dedicated base stations 22a. Further, the high speed dedicated base station control device 22b makes a position registration request for the terminal device 7 to the high speed core network 23. On the other hand, the low-speed dedicated base station control device 32b includes a plurality of low-speed dedicated base stations 32a.
To control. Further, the low speed dedicated base station control device 32b makes a position registration request for the terminal device 7 to the low speed core network 33. The high-speed dedicated base station control device 22b and the low-speed dedicated base station control device 32b hold and manage the common base station number. The high speed dedicated base station 22a and the low speed dedicated base station 32a are specifically controlled as follows. High-speed dedicated base station controller 22b and low-speed dedicated base station controller 32b
Is a high-speed transmission designation control signal or a low-speed transmission designation control signal received by the high-speed dedicated base station 22a or the low-speed dedicated base station 32a.
The common base station number and the terminal identification number are acquired. If the acquired control signal is the high-speed transmission designation control signal, the high-speed dedicated base station controller 22b sends the high-speed wireless link setting response to the high-speed dedicated base station 22a in order to establish the high-speed wireless link 21.
And instruct the high-speed dedicated base station 22a to transmit the high-speed wireless link setup response to the terminal device 7.
Further, the high speed dedicated base station control device 22b confirms that the high speed wireless link 21 is established by acquiring the acceptance response from the high speed dedicated base station 22a. Then, the high-speed dedicated base station controller 22b uses the high-speed core network 23
, The common base station number and the terminal identification number are provided to request the location registration of the terminal device 7. On the other hand, if the acquired control signal is the low-speed transmission designation control signal, the high-speed dedicated base station control device 22b does not need to establish the high-speed wireless link 21, so the control signal is discarded and the high-speed dedicated base station 22a is notified. On the other hand, I give no command.

Similarly, the low speed dedicated base station station controller 32b
If the acquired control signal is the low speed transmission designation control signal, the low speed wireless link setting response is provided to the low speed dedicated base station 32a to establish the low speed wireless link 31, and the low speed wireless link setting response is sent to the terminal device. The low-speed dedicated base station 32a is instructed to transmit to No. Further, the low speed dedicated base station controller 32b sends an acceptance response to the low speed dedicated base station 32a.
By confirming that the low-speed wireless link 31 has been established, the low-speed wireless link 31 is confirmed. Then, the low speed dedicated base station control device 32b provides the low speed core network 33 with the common base station number and the terminal identification number, and requests the location registration of the terminal device 7. On the other hand, the low-speed dedicated base station controller 32
If the acquired control signal is the high-speed transmission designation control signal, it is not necessary to establish the low-speed wireless link 31, so the control signal is discarded and the low-speed dedicated base station 32a
I don't give any orders.

The high-speed core network 23 is a high-speed communication network that acquires information transmitted to the terminal device 7 via the high-speed wireless link 21 and transmits the information at a high transmission speed. Here, the core network means the terminal device 7
In the network that communicates with the terminal device 7 and transmits information from the terminal device 7 to another communication network or transmits information from another communication network to the terminal device 7, the position registration control of the terminal device 7 and the generation of a call are performed. It refers to a network that performs call control that allocates channels accordingly, QoS control that controls quality of service (QoS), and the like. In this embodiment, a packet switching network is used as the high speed core network 23. High-speed core network 2
3 is a PPM (Packet Processing Module, packet subscriber device) 23a and a PGW (Packet Gateway M).
odule, packet barrier relay device) 23b, M-SCP
(Mobile-Service Control point, service control station) 23c, and a relay line 23d. PP
The M23a and the PGW 23b are packet switching means.
As described above, the high-speed core network 23 can provide high-speed transmission service by including high-speed transmission means such as packet switching means.

The PPM 23a stores packets (information) transmitted from the terminal device 7 used by a user who has subscribed to the high-speed communication service network 2, that is, a user who has a contract for using the high-speed transmission service. Station controller 22b
From the other communication network to the terminal device 7 via the gateway 8 and provided to the PGW 23b via the relay line 23d.
It is acquired from the PGW 23b via d, provided to the high-speed dedicated base station control device 22b, and provided to the terminal device 7. or,
The PPM 23a uses the high-speed dedicated base station controller 22b to
The common base station number and the terminal identification number are acquired, the common base station number and the terminal identification number are stored in the user information database 4 in association with each other, and the location of the terminal device 7 is registered. Also, PP
The M23a requests the M-SCP 23c to register in the user information database 4 that the terminal device 7 is in packet communication. In addition, PPM23a is MS
The CP 23c is requested to read the user information from the user information database 4, the user information is acquired, and the user of the terminal device 7 is authenticated. Also, PPM23
a acquires position information of the terminal device 7, that is, the common base station number registered in the position, from the user information database 4, and based on the common base station number, the additional service information database 5 performs the additional service. The information is acquired and provided to the terminal device 7.

The PGW 23b receives the packet (information) transmitted from the other communication network via the gateway 8 to the terminal device 7 used by the user who has subscribed to the high speed communication service network 2, and connects the relay line 23d. The packet (information) provided to the PPM 23a via the PPM 23a or transmitted from the PPM 23a by the terminal device 7 is acquired via the relay line 23d and transmitted to another communication network via the gateway 8. Also, PG
W23b requests the M-SCP 23c to register in the user information database 4 that the terminal device 7 is in packet communication. When the PGW 23b receives information transmitted from another communication network to the terminal device 7 via the gateway 8, that is, when the terminal device 7 is the receiving side, the received information is transmitted at high speed. It may be possible to determine whether the information is suitable for low speed transmission or information suitable for low speed transmission. Then, the PGW 23b provides the information to the PPM 23a if the information is suitable for high-speed transmission as a result of the determination, and if the information is suitable for low-speed transmission, the low-speed core network 33, for example, G -MSC3
Information may be provided to 3b. According to this, the information transmitted to the terminal device 7 can also be transmitted using the service network having an appropriate transmission rate.

The M-SCP 23c has a quality of service (Qo
QoS control for guaranteeing S) is performed. The quality of service needs to be guaranteed end-to-end. The service quality required for the high speed transmission service provided by the high speed communication service network 2 is, for example, 3GPP (3 Generati).
on Partnership Projects) include interactive classes (Interactive Class). The interactive class is a class that requires a response within a certain period of time and a low error rate, such as web browsing and server access, and because it does not specify delay quality, it has high burstiness and packet communication that guarantees a data loss rate. This class is suitable for. In addition, the high-speed transmission service provided by the high-speed communication service network 2 does not share a wireless link with the low-speed communication service network 3, and a high-speed wireless link 31 dedicated to high-speed transmission is provided.
To use. Therefore, the high-speed transmission service can have a service quality that allows a packet delay and the like, which cannot be allowed by the voice transmission service.

The M-SCP 23c has a band and a required service quality (class) in order to guarantee the service quality.
In consideration of the above, when resource shortage occurs in the high-speed core network 23 due to excess traffic, call acceptance is rejected in order to guarantee quality and traffic inflow is controlled.
Further, when traffic that is in violation of the contract and is larger than the conditions at the time of reception is input to the high-speed core network 23 for the accepted connection, not only the connection in violation of the contract but also other communication Since there is a possibility that the quality of the connection may be provided, MS
The CP 23c monitors contract traffic violations. Also, M
-The SCP 23c receives the request from the PPM 23a and the PGW 23b, registers that the terminal device 7 is in packet communication in the user information database 4, and the PPM 23a and the PG 23g.
It responds to W23b that it has registered. Also, M-
Upon receiving the request from the PPM 23a, the SCP 23c reads the user information from the user information database 4,
23a. The relay line 23d is a line that relays the PPM 23a and the PGW 23b.

The high speed core network 23 uses a communication protocol suitable for data communication. In this embodiment, since the data information is transmitted by packet communication, a protocol suitable for packet communication is used. Further, the high speed core network 23 uses a QoS control protocol for realizing the QoS control performed by the M-SCP 23c as described above. According to these, the high speed communication service network 2
A quality of service suitable for data communication can be guaranteed. Further, it is preferable that the high-speed core network 23 uses the PPM 23a, PGW 23b, MSCP 23c, etc. to realize a means for stably transferring a large amount of high-speed packets and a means for copying and branching the same data and transferring the same. .. As a result, the load of data transmission and transfer processing performed by the high-speed core network 23 can be further reduced. For example, Ipv6 (Internet Protocol Vers
Ion 6) etc. can be used.

The low-speed core network 33 is a low-speed communication network that acquires information transmitted to and from the terminal device 7 via the low-speed wireless link 31 and transmits the information at a low transmission speed. In this embodiment, the low-speed core network 33
The circuit switching network is used as. Low speed core network 33
Is an MSC (Mobile Switching Center) 33a and a G-MSC (Gateway Mobile Switch).
ing Center, gateway exchange) 33b and M-SCP (Mob
ile-Service Control point) 33
c and a relay line 33d. MSC33a
And G-MSC33b are circuit switching means. Thus, the low-speed core network 33 can provide the low-speed transmission service by including the low-speed transmission means such as the circuit switching means.

The MSC 33a receives the voice information transmitted from the terminal device 7 used by a user who has subscribed to the low speed communication service network 3, that is, a user who has a contract to use the low speed transmission service, and a low speed dedicated base station. It is acquired from the control device 32b and provided to the G-MSC 33b via the relay line 33d, or from the other communication network via the POI 11 to the terminal device 7
The voice information and the like transmitted to G via the relay line 33d.
― Obtained from MSC33b, low-speed dedicated base station controller 3
2b and the terminal device 7. Also, MSC3
3a acquires the common base station number and the terminal identification number from the low speed dedicated base station control device 32b, and registers the location of the terminal device 7. Further, the MSC 33a requests the M-SCP 33c to register in the user information database 4 that the terminal device 7 is in communication. Also, MSC33a
Requests the M-SCP 33c to read the user information from the user information database 4, acquires the user information, and authenticates the user of the terminal device 7. Also, M
The SC 33a acquires the common base station number for which the location of the terminal device 7 is registered from the user information database 4, and acquires the supplementary service information from the supplementary service information database 5 based on the common base station number. , To the terminal device 7.

The G-MSC 33b receives voice information and the like transmitted from another communication network to the terminal device 7 used by a user who subscribes to the low-speed communication service network 3 via the POI 11, and connects the relay line 33d. It is provided to the MSC 33a through the MSC 33a, or the voice information transmitted from the terminal device 7 is acquired from the MSC 33a and transmitted to another communication network through the POI 11. Further, the G-MSC 33b requests the M-SCP 33c to register in the user information database 4 that the terminal device 7 is in communication. Incidentally, G-MSC33
b, when the information transmitted to the terminal device 7 from another communication network via the POI 11 is received, that is, when the terminal device 7 is the receiving side, the received information is suitable for high-speed transmission. It may be determined whether the information is suitable for low-speed transmission. Then, if the G-MSC 33b determines that the information is suitable for low-speed transmission, the G-MSC 33b determines that the MS
If the information is provided to the C33a and the information is suitable for high speed transmission, the high speed core network 23, for example, P
Information may be provided to the GW 23b. According to this, the information transmitted to the terminal device 7 can also be transmitted using the service network having an appropriate transmission rate.

The M-SCP 33c performs QoS control for guaranteeing the quality of service. The service quality required for the low-speed transmission service provided by the low-speed communication service network 3 includes, for example, a conversational class (Conversational Class), a streaming class (Streaming Class), and a background class (Background Class) defined by 3GPP. ) Etc. The conversational class is a class that requires low delay quality in both directions such as voice, and is used for quality assurance applications with a fixed speed such as PCM coded voice and unrestricted bearer service in order to secure bandwidth. Is a suitable class. The streaming class is a class that requires a one-way low-delay streaming service such as real-time moving image distribution, and is a class suitable for handling variable-rate, high-efficiency coded voice. The background class is a best-effort class in which e-mails and files are downloaded in the background, and is a class suitable for best-effort services in which neither bandwidth nor quality is specified.

As with the M-SCP 23c, the M-SCP 33c rejects call acceptance in order to guarantee quality of service, controls traffic inflow, and monitors contract traffic violations. In addition, M-SCP33c is MSC3
3a, G-MSC33b's request is received, the terminal information 7 is registered in the user information database 4, and MSC33a, G-MSC33b is notified that it was registered. In addition, M-SCP33c is MSC3
In response to the request from 3a, the user information is read from the user information database 4 and responded to the MSC 33a. The relay line 33d is a line that relays the MSC 33a and the G-MSC 33b 23a.

The low speed core network 33 uses a communication protocol suitable for voice communication services. In this embodiment, since the voice information is transmitted by the circuit switching system, a protocol suitable for the circuit switching system is used. Further, the low-speed core network 33 uses the M-SCP 33c as described above.
The QoS control protocol for realizing the QoS control performed by According to these, the low-speed communication service network 3
Can guarantee the quality of service suitable for the voice communication service. Further, when the low-speed core network 33 performs data communication such as mail transmission that can be used at the same transmission speed as the voice communication service, a protocol suitable for the data communication is used. In addition, low-speed communication service network 3
However, when providing a voice communication service using the VoIP (Voice Over Internet Protocol) technology, a voice IP control protocol that guarantees a low processing delay is used.
When the low-speed communication service network 3 uses the VoIP technology, there is an advantage that the difference in communication charges depending on the distance can be eliminated and a uniform charge system can be established nationwide.

The user information database 4 is the terminal device 7
It is a user information holding means for holding user information regarding a user who uses the. The user information database 4 is shared by the high speed communication service network 2 and the low speed communication service network 3,
To use. The user information includes the terminal identification number, usage information,
There are authentication information, position information of the terminal device 7, communication registration information, and the like. In the present embodiment, since the high speed service communication network 2 and the low speed service communication network 3 share the user information database 4 and can collectively manage the user information, the terminal identification number is set to the high speed communication service network 2 and the low speed communication service network 3. It is possible to use a common number system assigned to the terminal device 7 without distinction. Therefore, one type of terminal identification number that allows the terminal device 7 to use both the high-speed communication service network 2 and the low-speed communication service network 3 is given to the terminal device 7. Therefore, the user of the terminal device 7 can use both the high-speed communication service network 2 and the low-speed communication service network 3 by using one type of terminal identification number. The terminal identification number is, for example,
For example, a telephone number.

The usage information is information in which the user of the terminal device 7 has previously selected the usage of only the high speed communication service network 2, the usage of only the low speed communication service network 3, or the usage of both of them. The communication system 1 prepares and provides a use environment for three types of services: use of only the high-speed communication service network 2, use of only the low-speed communication service network 3, and use of both of them. This is because it is convenient if the user can receive the service according to his / her wish. For example, voice communication services are highly public, and most users are likely to want to use them, but data communication services may be used by some users, such as for business use. There is a nature. Therefore, it becomes inconvenient for the user to provide only the services that are used by both the high-speed communication service network 2 and the low-speed communication service network 3. When receiving a service using the communication system 1, the user makes a contract to apply for the use of the service in advance, that is, a subscription contract. At the time of this subscription, the user
Select the service you want.

Then, in the user information database 4, the usage information indicating whether the user has selected the usage of only the high speed communication service network 2, the usage of only the low speed communication service network 3, or the usage of both of them is the terminal identification. It is held in association with a number. Therefore, the high-speed communication service network 2 and the low-speed communication service network 3 each refer to the usage information to determine the terminal identification number of the terminal device 7 that has accessed.
It is possible to confirm whether or not a subscription contract for the communication service network is made. Then, the high-speed communication service network 2 and the low-speed communication service network 3 can provide services that the user desires to use and has a subscription contract.

The authentication information is information for confirming whether the user of the terminal device 7 is a person who can certainly make a subscription contract and receive the service. The authentication information is
For example, there are a user ID and a password. Terminal device 7
The position information of is a common base station number representing the cell in which the terminal device 7 exists, and is stored in the user information database 4 in association with the terminal identification number and the common base station number. The communication registration information is information that registers that the terminal device 7 is currently communicating. According to the communication registration information, the high speed communication service network 2 and the low speed communication service network 3 grasp whether the terminal device 7 is currently communicating using the high speed communication service network 2 or the low speed communication service network 3. When another terminal makes a call to the terminal device 7 from another communication network, the fact that communication is in progress can be notified.

The additional service information database 5 holds additional service information to be provided to the terminal device 7. The additional service information is service information provided using the position information of the terminal device 7. For example, the additional service information includes area information such as a map according to the position of the terminal device and information about various facilities, emergency information according to the position of the terminal device, event information, and the like. The additional service information is held in association with the common base station number. The additional service information database 5 is also shared and used by the high speed communication service network 2 and the low speed communication service network 3. The common line 6 is a user information database 4 and an additional service information database 5 shared by the high speed communication service network 2 and the low speed communication service network 3.
In addition, both are commonly used for access by the high-speed core network 23 and the low-speed core network 33. PPM23a, PGW23b, M-SCP23
c, MSC33a, G-MSC33b, M-SCP33
c accesses the user information database 4 via the common line 6. Further, the PPM 23a and the MSC 33a access the additional service information database 5 via the common line 6. In this way, by using the common line 6, it is not necessary to separately provide a line (transmission path) for each access, and the configuration of the communication system 1 can be simplified.

The terminal device 7 can transmit and receive voice information, data information, etc., and is provided for the high-speed dedicated base station 22a and the low-speed dedicated base station 3
It is only necessary that the high speed wireless link 21 and the low speed wireless link 31 can be established with 2a. The terminal device 7 may have a function of using either a high-speed transmission service or a low-speed transmission service, or may have a function of using both services. Also, the terminal device 7 can simultaneously receive the high speed transmission service and the low speed transmission service as long as the high speed wireless link 21 and the low speed wireless link 31 can be established at the same time. As the terminal device 7, for example, a mobile phone, a personal digital assistant (PDA), a personal computer, or the like can be used.

Next, a communication method performed using the communication system 1 having the above configuration will be described. First, a method of establishing the high speed wireless link 21 will be described. FIG. 2 is a sequence diagram showing a procedure for establishing the high-speed wireless link 21.
First, the high speed dedicated base station 22a and the low speed dedicated base station 32a respectively transmit the common base station number to the terminal device 7 (S
101, S102). The terminal device 7 receives the transmitted common base station number, and sends the high-speed transmission designation control signal, the received common base station number, and the terminal identification number to both the high-speed dedicated base station 22a and the low-speed dedicated base station 32a. Is transmitted and a location registration request is made (S103, S104). The high speed dedicated base station 22a and the low speed dedicated base station 32a provide the received high speed transmission designation control signals to the high speed dedicated base station controller 22b and the low speed dedicated base station controller 32b, respectively (S105,
S106).

The high-speed dedicated base station controller 22b provides the high-speed wireless link setup response to the high-speed dedicated base station 22a, and commands the high-speed dedicated base station 22a to transmit the high-speed wireless link setup response to the terminal device 7. (S107).
The high speed dedicated base station 22a transmits a high speed wireless link setting response to the terminal device 7 according to the instruction (S108). The terminal device 7 receives the high-speed wireless link setting response and transmits an acceptance response to the high-speed dedicated base station 22a (S109). The high speed dedicated base station 22a receives the acceptance response and provides it to the high speed dedicated base station control device 22b (S110). The high speed dedicated base station controller 22b sends an acceptance response to the high speed dedicated base station 22a.
By confirming that the high-speed wireless link 21 has been established, the high-speed wireless link 21 is confirmed. Then, the high-speed dedicated base station control device 22b, for the PPM 23a, the common base station number,
The terminal identification number is provided and the location registration of the terminal device 7 is requested (S111). In this way, the high speed wireless link 2
When 1 is established, the information transmitted to and from the terminal device 7 is wirelessly transmitted by the high speed wireless link 21 and provided to the high speed core network 23. On the other hand, the low-speed dedicated base station control device 32b discards the control signal because the acquired control signal is the high-speed transmission designation control signal and it is not necessary to establish the low-speed wireless link 31 (S112), and the process ends (S113). ).

Next, a method of establishing the low speed wireless link 31 will be described. FIG. 3 is a sequence diagram showing a procedure for establishing the low-speed wireless link 31. Steps S201, S20
Step 2 is the same as steps S101 and S102. The terminal device 7 receives the transmitted common base station number, and sends the low-speed transmission designation control signal, the received common base station number, and the terminal identification number to both the high-speed dedicated base station 22a and the low-speed dedicated base station 32a. Is transmitted and a location registration request is made (S203,
S204). High-speed dedicated base station 22a and low-speed dedicated base station 3
Reference numeral 2a designates the received low speed transmission designation control signal respectively for the high speed dedicated base station controller 22b and the low speed dedicated base station controller 3
2b (S205, S206).

The low-speed dedicated base station controller 32b provides the low-speed wireless link setup response to the low-speed dedicated base station 32a, and commands the low-speed dedicated base station 32a to send the low-speed wireless link setup response to the terminal device 7. Yes (S207).
The low speed dedicated base station 32a transmits a low speed wireless link setting response to the terminal device 7 according to the instruction (S208). The terminal device 7 receives the low speed wireless link setting response and transmits an acceptance response to the low speed dedicated base station 32a (S209). The low speed dedicated base station 32a receives the acceptance response and provides it to the low speed dedicated base station controller 32b (S210). The low speed dedicated base station controller 32b sends an acceptance response to the low speed dedicated base station 22a.
By confirming that the low-speed wireless link 31 has been established, the low-speed wireless link 31 is confirmed. Then, the low speed dedicated base station control device 32b, for the MSC 33a, the common base station number,
It provides the terminal identification number and requests the location registration of the terminal device 7 (S211). In this way, the low speed wireless link 3
When 1 is established, the information transmitted to and from the terminal device 7 is wirelessly transmitted via the low speed wireless link 31 and provided to the low speed core network 33. On the other hand, the high-speed dedicated base station control device 22b discards the control signal because the acquired control signal is the low-speed transmission designation control signal and it is not necessary to establish the high-speed wireless link 21 (S212), and the processing is terminated (S213). ).

Next, a communication start procedure for high speed transmission of packets (information) transmitted from the terminal device 7 using the high speed core network 23 will be described. Figure 4
It is a sequence diagram which shows the communication start procedure with the high-speed core network 23. First, the terminal device 7 transmits a packet communication registration request to the PPM 23a (S301). Upon receiving the packet communication registration request, the PPM 23a receives the M-SCP2
The fact that the packet communication registration request has been received is registered in 3c, and a packet transmission information read request is made (S30).
2). Here, the transmission information refers to user information necessary for the terminal device 7 to perform transmission, and includes, for example, position information of the terminal device 7, authentication information, usage information, and the like. M-SCP
23c receives the packet transmission information read request from PPM 23a, reads the packet transmission information from user information database 4 (S303), and provides it to PPM 23a as a packet transmission information read response (S304).

The PPM 23a determines whether or not the terminal identification number of the terminal device 7 which has requested the packet communication registration selects the use of the high speed communication service network 2 based on the acquired use information of the packet transmission information. Check. After the confirmation, the PPM 23a transmits a packet authentication request to the terminal device 7 (S305), and receives a packet authentication response to the authentication request from the terminal device 7 (S306). Then, the PPM 23a compares the authentication information of the packet transmission information acquired from the M-SCP 23c with the packet authentication response, and executes the authentication processing of the user of the terminal device 7 (S).
307). After the PPM 23a recognizes that the user of the terminal device 7 can certainly make a subscription contract and can receive the service, that is, a legitimate user, the PGW 2a.
3b is requested to connect the relay line 23d (S308). PGW 23b sends line connection response to PPM2
Returning to 3a, line connection processing of the relay line 23d is performed (S309).

Then, the PPM 23a is the M-SCP 23
A packet communication registration request is issued to c (S31).
0). Here, communication registration means registering that the terminal device 7 is in communication. Upon receiving the packet communication registration request, the M-SCP 23c registers that the terminal device 7 is in packet communication in the user information database 4 in association with the terminal identification number (S311), and registers the packet communication in the PPM 23a. A packet communication registration response for notifying that is returned (S312). The PPM 23a transmits a packet communication registration response to the terminal device 7 (S313).
As a result, the process for starting the data communication ends, and the terminal device 7 that has received the packet communication registration response starts transmission / reception of packets (information), that is, packet communication.

Next, a communication start procedure for low speed transmission of voice information and the like transmitted from the terminal device 7 using the low speed core network 33 will be described. FIG. 5 is a sequence diagram showing a procedure for starting communication with the low-speed core network 33. First, the terminal device 7 sends a communication registration request to the MSC.
33a (S401). Upon receiving the communication registration request, the MSC 33a registers in the M-SCP 33c that the communication registration request has been received, and issues a call information read request (S402). The M-SCP 33c receives the calling information reading request from the MSC 33a, reads the calling information from the user information database 4 (S403), and the MSC 33a.
(S404).

The MSC 33a makes a request for communication registration based on the acquired usage information of the outgoing call information.
It is confirmed whether the terminal identification number of 1 selects the use of the low speed communication service network 3. After that confirmation, MSC33a
Transmits an authentication request to the terminal device 7 (S405) and receives an authentication response to the authentication request from the terminal device 7 (S406). And MSC33a is M-SCP3.
The authentication information of the outgoing information acquired from 3c is compared with the authentication response to execute the authentication process of the user of the terminal device 7 (S407). After recognizing that the user of the terminal device 7 is a valid user, the MSC 33a makes a line connection request for the trunk line 33d to the G-MSC 33b (S40).
8). G-MSC33b sends line connection response to MSC33a
And the line connection processing of the relay line 33d is performed (S
409).

Then, the MSC 33a uses the M-SCP 33
A communication registration request is issued to c (S410). MS
Upon receiving the communication registration request, the CP 33c registers in the user information database 4 that the terminal device 7 is in communication in association with the terminal identification number (S411), and notifies the MSC 33a that communication registration has been performed. A registration response is returned (S412). The MSC 33a transmits a communication registration response to the terminal device 7 (S413). As a result, the channel for starting the voice communication is set, and the terminal device 7 that has received the communication registration response is MSC33a, G-MSC33.
b, transmission / reception of voice information via the POI 11, that is,
Make a call.

The communication system 1 according to the first embodiment of the present invention is configured as described above, and by the high speed wireless link 21 established between the high speed dedicated base station 22a and the terminal device 7, When the information transmitted to and from the terminal device 7 is wirelessly transmitted at a high transmission speed, the information is transmitted at high speed by the high speed core network 23. on the other hand,
When the information transmitted to and from the terminal device 7 is wirelessly transmitted at a low transmission speed by the low speed wireless link 31 established between the low speed dedicated base station 32a and the terminal device 7, the information is transmitted to the low speed core. It is transmitted at low speed by the network 33.

That is, the communication system 1 has a wireless link for wirelessly transmitting information transmitted to and from the terminal device 7, and a communication for transmitting information transmitted to and from the terminal device 7 via the wireless link. Both of the networks are divided into those for high speed transmission and those for low speed transmission, and a high speed communication service network 2 for high speed information transmission and a low speed communication service network 3 for low speed information transmission are constructed separately. Therefore, the high-speed communication service network 2 can construct the optimum one for the high-speed transmission service, and the low-speed communication service network 3 can construct the optimum one for the low-speed transmission service, and each service can be stably provided. In addition, there is no need for equipment to combine different high-speed transmission services and low-speed transmission services in the same communication network.
The capital investment efficiency can be optimized and the service can be provided at a low price. Further, since the high-speed communication service network 2 and the low-speed communication service network 3 are constructed separately, the control of the communication protocol for guaranteeing the service quality required for each may be performed independently in each service network. . As a result, control of the communication protocol is simplified. Therefore, the load due to the control of the communication protocol is reduced, and the stable communication system 1 can be provided.
Further, since a complicated control means is not required, the equipment investment can be reduced and the service can be provided at a low charge. Furthermore, there is a possibility that flat-rate usage charges will be achieved as the charges decrease.

Further, in the present embodiment, the high speed dedicated base station 22
The low-speed base station 32a and the low-speed base station 32a have base station numbers of a common number system that are assigned without being distinguished from each other. Therefore, the communication system 1 can manage and control both the high-speed dedicated base station 22a and the low-speed dedicated base station 32a, and can manage the position information of the terminal device 7, using one type of common base station number. Therefore, the load of management and control performed by the communication system 1 can be further reduced and a more stable service can be provided. The common base station number is the high-speed dedicated base station 22a.
And the low-speed dedicated base station 32a are provided without being distinguished from each other, the terminal device 7 does not care whether it is a high-speed dedicated base station or a low-speed dedicated base station. The station can be requested to establish a wireless link. Therefore, it is not necessary for the user to perform bothersome operations in consideration of both.

Even when one type of common base station number is used, the high speed dedicated base station 22a and the low speed dedicated base station 32a are used.
The terminal device 7 receives the high-speed transmission designation control signal or the low-speed transmission designation control signal,
Alternatively, it is possible to know which one of the low-speed wireless links 31 is desired to be established, and to establish an appropriate wireless link.
Also, the user who uses the terminal device 7 transmits a control signal without being aware of whether it is a high-speed dedicated base station or a low-speed dedicated base station, so that the user can use the wireless link desired by the base station. Can be required to be established.

Since the high speed communication service network 2 and the low speed communication service network 3 share the user information database 4,
The communication system 1 can collectively manage the user information by the single user information database 4, and can simplify the configuration of the entire communication system 1. Therefore, it is possible to further reduce the load of control performed by the communication system 1, further suppress the facility investment, and provide the service at a low charge. Furthermore,
The high speed communication service network 2 and the low speed communication service network 3 can share user information. Therefore, for example, the terminal device 7
However, even while the high-speed transmission service network 2 is providing the high-speed transmission service, the low-speed communication service network 3 can grasp the situation of the terminal device 7. Further, when the high-speed service communication network 2 and the low-speed service communication network 3 share the user information database 4, the user information can be collectively managed, and therefore the terminal identification numbers are distinguished from each other between the high-speed communication service network 2 and the low-speed communication service network 3. It is possible to use a common number system assigned to the terminal device 7 without doing so.

Therefore, the communication system 1 can give the terminal device 7 a kind of terminal identification number that allows the terminal device 7 to use both the high speed communication service network 2 and the low speed communication service network 3. Then, the user of the terminal device 7 uses both types of service communication networks without being aware of whether to use the high speed communication service network 2 or the low speed communication service network 3 with one type of terminal identification number. be able to. In addition, the telecommunications carrier who builds and manages the communication system 1 can collectively bill the user for the use of the high-speed communication service network 2 and the low-speed communication service 3, thus reducing the cost related to the bill. Then, the service can be provided at a lower price.

(Second Embodiment) Next, the second embodiment of the present invention will be described.
A communication system 201 according to the embodiment will be described. FIG. 6 is a communication system 20 according to the second embodiment.
2 is a block diagram showing a configuration of No. 1. Communication system 201
Is composed of a high-speed communication service network 202, a low-speed communication service network 203, a user information database 204, an additional service information database 205, a common line 206, and a base station controller 207. The high speed communication service network 202 includes a high speed wireless link 221, a plurality of high speed dedicated base stations 222, and a high speed core network 223. The high speed core network 223 is a PPM22.
3a, PGW 223b, M-SCP 223c, and relay line 223d. The low speed communication service network 203 includes a low speed wireless link 231, a plurality of low speed dedicated base stations 232, and a low speed core network 233. The low-speed core network 233 is the MSC 233.
a, G-MSC233b, M-SCP233c,
It is composed of a relay line 233d.

The high speed dedicated base station 222 is distinguished from the low speed dedicated base station 232 and has a dedicated base station number (hereinafter referred to as "high speed base station number") assigned to the high speed dedicated base station 222. The low-speed dedicated base station 232 is distinguished from the high-speed dedicated base station 222 and has a dedicated base station number (hereinafter referred to as “low-speed base station number”) assigned to the low-speed dedicated base station 232. Therefore, the high speed dedicated base station 222 transmits the high speed base station number and the low speed dedicated base station 232 transmits the low speed base station number to the terminal device 7. The terminal device 7 receives the transmitted high-speed base station number and low-speed base station number and requests either the high-speed dedicated base station 222 or the low-speed dedicated base station 232 to establish a wireless link. At that time, since the high-speed base station number and the low-speed base station number are distinguished, the terminal device 7
Can distinguish the high speed dedicated base station 222 and the low speed dedicated base station 232 only by the high speed base station number and the low speed base station number.

Therefore, the terminal device 7 transmits the base station number and the terminal identification number to the base station that wants to establish a wireless link, and makes a location registration request. Then, the high-speed dedicated base station 222 and the low-speed dedicated base station 232 receive the location registration request transmitted from the terminal device 7, and thus the terminal device 7 desires to establish the high-speed wireless link 221 and the low-speed wireless link 221. It knows that it wants to establish 231 and establishes the high speed wireless link 221 and the low speed wireless link 231 respectively. Specifically, the high speed dedicated base station 222
The low-speed dedicated base station 232 provides the received position registration request to the base station controller 207, and establishes a wireless link under the control of the base station controller 207.

The base station controller 207 controls a plurality of high speed dedicated base stations 222 and low speed dedicated base stations 232.
In addition, the base station control device 207 uses the high-speed core network 2
23, a location registration request for the terminal device 7 is issued to the low speed core network 233 and the low speed core network 233. Also, the base station controller 207
Holds and manages both high speed base station numbers and low speed ground station numbers. High-speed dedicated base station 222 and low-speed dedicated base station 232
The control of is specifically performed as follows. Base station controller 2
07 is a high-speed dedicated base station 222 or a low-speed dedicated base station 232.
The location registration request including the high speed base station number, the low speed base station number, and the terminal identification number received by is acquired. Base station controller 2
07, when the acquired location registration request includes a high speed base station number, provides a high speed wireless link setting response to the high speed dedicated base station 222 to establish the high speed wireless link 221;
The high speed dedicated base station 222 is instructed to transmit the high speed wireless link setting response to the terminal device 7. On the other hand, when the acquired location registration request includes the low speed base station number, the base station control device 207 transmits the low speed wireless link setting response to the low speed dedicated base station 23 in order to establish the low speed wireless link 231.
2 and provides the low speed wireless link setting response to the terminal device 7
To the low speed dedicated base station 232 to transmit. Then, the base station control device 207 acquires the acceptance response from the high-speed dedicated base station 222 or the low-speed dedicated base station 232, and thereby the high-speed wireless link 221 or the low-speed wireless link 2
Confirm that 31 is established. Then, the base station control device 207 makes a determination based on the base station number and makes a location registration request to either the high speed core network 223 or the low speed core network 233. That is, the base station control device 207 distributes and provides the high-speed base station number and the terminal identification number, or the low-speed base station number and the terminal identification number to the high-speed core network 232 or the low-speed core network 233 to provide the position of the terminal device 7. Request registration.

The high-speed wireless link 221 and the PPM 22
3a, PGW 223b, M-SCP 223c, trunk line 223d, low speed wireless link 231, and MSC2.
33a, G-MSC233b, M-SCP233c
, Relay line 233d, and user information database 20
4, additional service information database 205, common line 2
Reference numeral 06 denotes a high-speed base station number or a low-speed base station number to be handled, which is substantially the same as that in the first embodiment except that the base station numbers are different, and therefore description thereof will be omitted here.

Next, the communication system 20 having the above configuration
A method of establishing the high-speed wireless link 221 using 1 will be described. FIG. 7 is a sequence diagram showing a procedure for establishing the high-speed wireless link 221. First, the high speed dedicated base station 22
2. The low speed dedicated base station 232 transmits the high speed base station number and the low speed base station number to the terminal device 7, respectively (S50).
1, S502). The terminal device 7 receives the transmitted high-speed base station number and low-speed base station number, and the high-speed dedicated base station 222
Then, the received high-speed base station number and terminal identification number are transmitted, and a location registration request is made (S503). The high speed dedicated base station 222 sends the received location registration request to the base station controller 20.
7 (S504).

The base station controller 207 determines that the high speed base station number included in the acquired position registration request is requesting the establishment of the high speed radio link 221, and sends the high speed radio link setting response to the high speed dedicated base station 222. The high-speed dedicated base station 222 is instructed to provide the high-speed wireless link setting response to the terminal device 7 (S505). The high-speed dedicated base station 222 transmits a high-speed wireless link setup response to the terminal device 7 according to the command (S506). The terminal device 7
The high speed wireless link setting response is received, and the acceptance response is transmitted to the high speed dedicated base station 222 (S507). The high speed dedicated base station 222 receives the acceptance response and provides it to the base station controller 207 (S508). The base station control device 207 acquires the acceptance response from the high-speed dedicated base station 222,
Confirm that the high-speed wireless link 221 has been established. Then, the base station control device 207 makes a determination based on the high speed base station number, provides the high speed base station number and the terminal identification number to the PPM 223a, and requests the location registration of the terminal device 7 (S509).

Next, a method of establishing the low speed wireless link 231 will be described. FIG. 8 is a sequence diagram showing a procedure for establishing the low-speed wireless link 231. First, the high speed dedicated base station 222 and the low speed dedicated base station 232 respectively transmit the high speed base station number and the low speed base station number to the terminal device 7 (S60).
1, S602). The terminal device 7 receives the transmitted high-speed base station number and low-speed base station number, and transmits the low-speed dedicated base station 232.
Then, the received low speed base station number and terminal identification number are transmitted, and a location registration request is made (S603). The low speed dedicated base station 232 sends the received location registration request to the base station controller 20.
7 (S604).

The base station controller 207 determines that the low speed base station number contained in the acquired position registration request is requesting the establishment of the low speed radio link 231, and sends the low speed radio link setting response to the low speed dedicated base station 232. Then, the low-speed dedicated base station 232 is instructed to provide the low-speed wireless link setting response to the terminal device 7 (S605). The low-speed dedicated base station 232 transmits a low-speed wireless link setting response to the terminal device 7 according to the instruction (S606). The terminal device 7
The low speed wireless link setting response is received, and the acceptance response is transmitted to the low speed dedicated base station 232 (S607). The low speed dedicated base station 232 receives the acceptance response and provides it to the base station controller 207 (S608). The base station control device 207 acquires the acceptance response from the low speed dedicated base station 232,
Confirm that the low speed wireless link 231 has been established. Then, the base station control device 207 makes a determination based on the low speed base station number, and for the MSC 233a, the low speed base station number,
It provides the terminal identification number and requests the location registration of the terminal device 7 (S609).

The communication system 201 according to the second embodiment of the present invention is configured as described above, and it is possible to obtain substantially the same effects as the communication system 1 according to the first embodiment. However, in the communication system 201, unlike the communication system 1 according to the first embodiment, the high speed dedicated base station 2
22 has a dedicated high-speed base station number given to the high-speed dedicated base station 222, and the low-speed dedicated base station 232 has a dedicated low-speed base station number given to the low-speed dedicated base station 232. Therefore, although it is necessary for the terminal device 7 to request establishment of a wireless link in consideration of whether it is a high-speed dedicated base station or a low-speed dedicated base station, as in the first embodiment, It is not necessary to transmit a high speed transmission designation control signal or a low speed transmission designation control signal. Therefore, the process performed by the terminal device 7 for establishing the wireless link can be simplified, and the load on the terminal device 7 can be reduced. Further, the base station control device 207 can control and manage both the high speed dedicated base station 222 and the low speed dedicated base station 232.

[0077]

According to the present invention, the control of the communication protocol is simplified, the optimum communication service network is constructed for each of the high speed transmission service and the low speed transmission service, and the respective services can be stably provided, and the optimum communication service can be provided. It is possible to provide a communication system and a communication method capable of providing a service at a low charge by making a capital investment.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a communication system according to a first embodiment of the present invention.

FIG. 2 is a sequence diagram showing a procedure for establishing a high-speed wireless link according to the first embodiment of the present invention.

FIG. 3 is a sequence diagram showing a procedure for establishing a low-speed wireless link according to the first embodiment of the present invention.

FIG. 4 is a sequence diagram showing a procedure for starting communication with the high speed core network according to the first embodiment of the present invention.

FIG. 5 is a sequence diagram showing a procedure for starting communication with the low-speed core network according to the first embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a communication system according to a second exemplary embodiment of the present invention.

FIG. 7 is a sequence diagram showing a procedure for establishing a high-speed wireless link according to the second embodiment of the present invention.

FIG. 8 is a sequence diagram showing a procedure for establishing a low-speed wireless link according to the second embodiment of the present invention.

FIG. 9 is a block diagram showing a configuration of a conventional communication system.

[Explanation of symbols]

1,201,301 Communication system 2,202 High-speed communication service network 3,203 Low-speed communication service network 4,204 User information database 5,205 Additional service information database 6,206 Common line 7,305 terminal equipment 8 gateways 9 Internet server 10 Intranet 11 POI 12 Mobile communication network 13 fixed net 21,221 High-speed wireless link 22 High-speed RAN 22a, 222 High-speed dedicated base station 22b High-speed dedicated base station controller 23,223 High-speed core network 23a, 223a PPM 23b, 223b PGW 23c, 33c, 223c, 233c M-SCP 23d, 33d, 223d, 233d relay line 31,231 Low speed wireless link 32 low speed RAN 32a, 232 Low-speed dedicated base station 32b low speed dedicated base station controller 33,233 Low-speed core network 33a, 233a MSC 33b, 233b G-MSC 207, 303b Base station control device 302 wireless link 303 RAN 303a Base station 304 ATM network 304a Service control unit 304b Location information database 304c Subscriber ladder exchange 304d, 304h Packet switching unit 304e, 304i Circuit switching unit 304f ATM trunk line 304g Kanmon relay ladder exchange 305a Data communication terminal 305b Voice communication terminal

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04Q 7/30 (72) Inventor Toshio Nojima 2-11-1, Nagatacho, Chiyoda-ku, Tokyo N T-DOCOMO F-term (reference) 5K033 BA14 DA17 DA19 5K067 AA41 CC08 DD17 DD19 DD53 DD54 DD57 EE02 EE10 EE16 EE23 5K101 KK20 LL11 LL12 MM01 QQ11

Claims (12)

[Claims] 1. A high-speed communication service network for transmitting information transmitted to and from a terminal device at a high transmission speed, and a low-speed information transmitted to and from the terminal device as compared with the high-speed communication service network. A high speed dedicated base station for receiving information transmitted to and from the terminal device, the high speed dedicated base station and the terminal device. And a high-speed wireless link for wirelessly transmitting the information at a high transmission rate, and information transmitted between the terminal device via the high-speed wireless link is acquired, and the information is transmitted at high speed. A low-speed communication service network that transmits at a transmission speed, wherein the low-speed communication service network includes a low-speed dedicated base station that receives information transmitted to and from the terminal device, and the low-speed dedicated base station and the terminal device. Established between Low-speed wireless link for wirelessly transmitting information at a low transmission speed, and a low-speed communication network for acquiring information transmitted between the terminal device via the low-speed wireless link and transmitting the information at a low transmission speed A communication system comprising: 2. The information transmitted by the high-speed communication service network is data information, the high-speed communication network uses a communication protocol suitable for data communication, and the information transmitted by the low-speed communication service network is voice information. The communication system according to claim 1, wherein the low-speed communication network uses a communication protocol suitable for voice communication. 3. The high-speed communication network has high-speed transmission means for transmitting the information at a high transmission speed, and the low-speed communication network has low-speed transmission means for transmitting the information at a low transmission speed. The communication system according to claim 1 or 2. 4. The communication system according to claim 3, wherein the high speed transmission means is a packet switching means, and the low speed transmission means is a circuit switching means. 5. The high-speed dedicated base station and the low-speed dedicated base station have base station numbers of a common number system that are assigned without distinction from each other. The communication system according to. 6. The high-speed dedicated base station and the low-speed dedicated base station receive a control signal transmitted from the terminal device and designating whether to transmit information at a high-speed or a low-speed transmission rate, and receive the control signal. The communication system according to claim 5, wherein either the high-speed wireless link or the low-speed wireless link is established with the terminal device according to a control signal. 7. The high-speed dedicated base station has a dedicated base station number assigned to the high-speed dedicated base station, and the low-speed dedicated base station is a dedicated base station assigned to the low-speed dedicated base station. The communication system according to claim 1, wherein the communication system has a number. 8. A user information holding means for holding user information about a user who uses the terminal device, wherein the high speed communication service network and the low speed communication service network share the user information holding means. The communication system according to any one of claims 1 to 7. 9. The user information includes a terminal identification number for identifying the terminal device, and the terminal identification number does not distinguish the high-speed communication service network and the low-speed communication service network from each other. The communication system according to claim 8, wherein the communication system has a common number system assigned to the devices. 10. The user information includes:
10. The communication system according to claim 8, further comprising use information in which use of only the high-speed communication service network, use of only the low-speed communication service network, or use of both of them is included. 11. A high-speed communication service network for transmitting information transmitted to and from a terminal device at a high transmission speed, and information transmitted to and from the terminal device is lower than that of the high-speed communication service network. A communication method using a communication system including a low-speed communication service network transmitting at a transmission rate of, the information transmitted to the terminal device according to the information transmitted to the terminal device. A high-speed wireless link for wirelessly transmitting the information at a high transmission rate between the high-speed dedicated base station for receiving the information and the terminal device, or a low-speed dedicated base station for receiving information transmitted between the terminal device and the terminal device. And one of the low-speed wireless link for wirelessly transmitting the information at a low transmission rate between the terminal device and the terminal device, the information transmitted to and from the terminal device via the high-speed wireless link, Information transmission at high speed The information transmitted by a high speed communication network transmitting at a high speed and transmitted to and from the terminal device via the low speed wireless link is transmitted by a low speed communication network transmitting the information at a low transmission speed. And communication method. 12. The high-speed dedicated base station and the low-speed dedicated base station receive a control signal transmitted from the terminal device, the control signal designating whether to transmit information at a high-speed or a low-speed transmission rate, and the received control signal is received. The communication method according to claim 11, wherein either the high-speed wireless link or the low-speed wireless link is established with the terminal device according to a control signal.