JP5514138B2 - Communication system, GW apparatus, and policy control apparatus cooperation method - Google Patents

Description

  The present invention relates to a technology in which each of a core network and an access network includes a policy control device that implements a QoS service and links the policy control device of the core network and the policy control device of the access network. Is a thing

  The configuration and processing sequence of a conventional communication network that is the premise of the above technique will be described with reference to FIG.

  The communication network shown in FIG. 1 is, for example, an IP packet communication network defined by 3GPP (Non-patent Documents 1 to 3, etc.). As shown in FIG. 1, in the communication network, an access network 100 and a core network 200 are connected by routers 11 and 21, and a terminal 12 is connected to the router 11 of the access network 100. The core network 200 includes a gateway (GW) 22 serving as a connection point with a packet network outside the core network, and a terminal 23 of the external packet network is connected via the GW 22.

  The access network 100 and the core network 200 include policy control devices 10 and 20, respectively. Each of the policy control devices 10 and 20 is composed of a plurality of devices and performs parallel processing in order to scale out the devices in a large-scale network. In addition, the core network 200 includes an application function 24 that instructs a QoS service.

  As described above, each of the policy control devices 10 and 20 includes a plurality of devices. However, when “policy control device 10” is described, each device that does not specify any of the plurality of devices unless otherwise specified. Or any device. When a specific device among a plurality of devices is indicated, it indicates that the device is a specific device, such as “policy control device 10 corresponding to β” directly or indirectly. The same applies to the policy control device 20. Hereinafter, the policy control device 10 is also referred to as an access network policy control device 10, and the policy control device 20 is also referred to as a core network policy control device 20.

  In the communication network shown in FIG. 1, the core network 200 and the access network 100 are assigned different IP addresses (position-independent / position-dependent) to the terminal 12. Hereinafter, the position-independent IP address is α, and the position-dependent IP address is β. Since the position where the terminal 12 is connected to the access network 100 is not constant, the position-dependent IP address (β) is not fixed to one.

  As shown in FIG. 1, the core network policy control device 20 includes a user profile (user ID, available service, etc.), a location-dependent IP address (β) and a location-independent IP address (α ) Is stored. Furthermore, the core network policy control device 20 statically holds the correspondence relationship between β and a specific access network policy control device 10 that performs processing related to the terminal 12 to which β is assigned.

  The access network policy control apparatus 10 stores network resource profiles (total line resources, allocated resources, etc.).

  Hereinafter, as processing for linking the core network policy control apparatus 200 and the access network policy control apparatus 100 in the prior art, (1) terminal connection processing (pre-processing in cooperation), and (2) QoS service execution time Processing (actual cooperation) will be described with reference to FIG.

(1) Processing at the time of terminal connection (preprocessing in cooperation)
When the terminal 12 is connected to the access network 100 and the core network 200 (step 1), the GW 22 that has detected the connection notifies the correspondence relationship between α and β to the core network policy control device (step 2). The core network policy control device 20 holds this (step 3). The core network policy control device 20 notifies the correspondence relationship between α and β to the access network policy control device 10 (step 4).

(2) QoS service execution processing (actual linkage)
When the core network policy control apparatus 200 receives an instruction for policy control including α (step 5), the core network policy control apparatus 200 refers to the user profile to check whether the service according to the instruction is an allowed service for the user, Referring to the correspondence relationship between α and β held in step 3, convert α to β, and refer to the correspondence relationship between β held statically and the address of the access network policy control device 10 to correspond to β. The access network policy control device 10 to be specified is specified, and the specified access network policy control device 10 is requested to execute the QoS service (step 6).

  The access network policy control apparatus 10 refers to the network resource profile, secures resources (bandwidth) necessary for the QoS service, and instructs the router 11 of the access network 100 to execute the QoS service (step 7).

  In the above processing, Step 1 is defined in Non-Patent Document 1, Steps 2, 3, 5, and 7 are defined in Non-Patent Document 2, and Steps 4 and 6 are defined in Non-Patent Document 3.

3GPP TS 23.402 "Architecture Enhancements for non-3GPP accesses", v10.0.0 3GPP TS 23.203 "Policy and charging control architecture", v10.0.0 3GPP TR 23.839 "Study on Support of BBF Access Interworking", v0.2.0

  In the communication network having the core network 200 and the access network 100 as shown in FIG. 1, the core network 200 and the access network 100 need to be managed and operated independently as a required condition. Further, the core network policy control device 20 It is necessary to prepare for inconsistencies in the database managed by

  However, as shown in FIG. 1, in the conventional communication network, the correspondence relationship between the location-dependent IP address (β) of the terminal 12 and the access network policy control device 10 that performs processing related to the terminal 12, that is, the access network 100 The internal configuration is managed on the core network 200 side, and the requirement for independently managing and operating the core network 200 and the access network 100 is not satisfied.

  Further, in the conventional communication network, the access network policy control device 10 cannot confirm whether the correspondence relationship between α and β notified from the core network 200 is correct. Even if there is an inconsistency in the existing database, it cannot be detected.

  The present invention has been made in view of the above points, and realizes cooperation without managing the internal configuration of the access network on the core network side, and the location notified from the core network in the policy control device of the access network. It is an object of the present invention to provide a technique that makes it possible to confirm whether or not the correspondence between an independent address and a position-dependent address is correct.

In order to solve the above-described problems, the present invention provides a communication network in which a policy control device of a core network and a policy control device of an access network cooperate to provide a QoS service, and the policy control device of the core network and the access network A communication system comprising the policy control device of
An access network GW device that relays messages transmitted and received between the core network policy control device and the access network policy control device;
The GW device holds a correspondence relationship between a location-dependent address of a terminal and an address of a policy control device of the access network,
When the policy control device of the core network receives a message including the correspondence between the location-independent address of the terminal and the location-dependent address, the policy control device holds the correspondence included in the message and includes the location-independent address. When the QoS service instruction is received, the location-dependent address is added to the QoS service instruction based on the correspondence relationship, and transmitted to the GW device.
The GW device that has received the QoS service instruction receives the QoS service instruction from the location-dependent address based on the correspondence between the location-dependent address of the terminal and the address of the policy control device of the access network. sending of the policy control device,
When the policy control device of the access network receives a message including the correspondence between the location-independent address and the location-dependent address of the terminal, the policy control device holds the correspondence included in the message, and after holding the correspondence When the QoS service instruction including the position-independent address and the position-dependent address is received, the validity of the address included in the QoS service instruction is confirmed based on the correspondence relationship. Configured as a system.
The present invention also provides a communication network in which a policy control device of a core network and a policy control device of an access network provide a QoS service in cooperation between the policy control device of the core network and the policy control device of the access network. A communication system comprising: a GW device that relays messages transmitted and received by the network; and a policy control device for the access network,
The GW device
Correspondence storage means for maintaining a correspondence between the location-dependent address of the terminal and the address of the policy control device of the access network;
Receiving means for receiving a QoS service instruction sent from the policy control device of the core network, the QoS service instruction including a location-dependent address and a location-independent address of the terminal;
Identifying means for identifying a policy control device of an access network corresponding to the location-dependent address by referring to the correspondence relationship storage means based on the location-dependent address in the QoS service instruction;
Transmitting means for transmitting the QoS service instruction to the policy control device of the access network specified by the specifying means;
When the policy control device of the access network receives a message including the correspondence between the location-independent address and the location-dependent address of the terminal, the policy control device holds the correspondence included in the message, and after holding the correspondence When the QoS service instruction including the position-independent address and the position-dependent address is received, the validity of the address included in the QoS service instruction is confirmed based on the correspondence relationship. It can also be configured as a system.

Further, the present invention provides a communication network in which a policy control device of a core network and a policy control device of an access network cooperate to provide a QoS service, and the communication includes the policy control device of the core network and the policy control device of the access network. A system,
A core network GW device that relays messages transmitted and received between the core network policy control device and the access network policy control device; and an access network GW device.
The GW device of the core network maintains a correspondence relationship between the location-independent address of the terminal and the address of the policy control device of the core network, and the GW device of the access network includes the location-dependent address of the terminal and the access network Maintains the correspondence with the policy control device address,
When the GW device of the core network receives a message including the correspondence between the location-independent address of the terminal and the location-dependent address, the location-independent address of the terminal and the address of the policy control device of the core network Based on the correspondence relationship, the message is transmitted to the policy control device of the core network corresponding to the position-independent address,
The policy control apparatus of the core network that has received the message maintains the correspondence relationship included in the message, and receives the QoS service instruction including the location-independent address, based on the correspondence relationship, An address is added to the QoS service instruction and transmitted to the GW device of the access network,
The GW device of the access network that has received the QoS service instruction corresponds the QoS service instruction to the location-dependent address based on the correspondence between the location-dependent address of the terminal and the address of the policy control device of the access network. It can also be configured as a communication system characterized by transmitting to the policy control device of the access network.

  Further, when the policy control device of the access network receives a message including the correspondence between the location-independent address of the terminal and the location-dependent address, the policy control device retains the correspondence included in the message and maintains the correspondence After that, when a message including the position-independent address and the position-dependent address is received from the core network, the validity of the address included in the message is confirmed based on the correspondence relationship. Also good.

  The present invention can also be configured as each GW device described above, and can also be configured as a policy control device cooperation method executed by the communication system.

  According to the present invention, cooperation is realized without managing the internal structure of the access network on the core network side, and the correspondence between the position-independent address and the position-dependent address notified from the core network in the policy control device of the access network is realized. It is possible to check whether the relationship is correct.

It is a figure for demonstrating a prior art. 1 is a system configuration diagram of a communication network according to a first embodiment. 3 is a functional configuration diagram of an access network GW apparatus 30. FIG. 3 is a functional configuration diagram of a core network GW apparatus 40. FIG. It is a system configuration | structure figure of the communication network which concerns on 2nd Embodiment. It is a system block diagram of the communication network which concerns on 3rd Embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. There are three proposed methods according to the present invention, and these three methods will be described as a first embodiment, a second embodiment, and a third embodiment, respectively. In the following, the description will focus on parts that are different from the prior art.

<First Embodiment>
(System configuration)
FIG. 2 is a system configuration diagram of the communication network according to the first embodiment. FIG. 2 shows the connection configuration of the apparatus, and also shows each table provided in the apparatus, and a processing procedure referred to in the subsequent operation description.

  As shown in FIG. 2, the communication network in the first embodiment is different from the conventional communication network in that the access network side GW device 30 (referred to as the access network GW device 30) and the core network side GW device. 40 (referred to as a core network GW device 40). When the access network policy control device 10 and the core network policy control device 20 exchange messages with each other, the access network GW device 30 and the core network GW device 40 are arranged at positions to relay the messages.

  Each GW device uses a table as a table for information on the internal configuration (corresponding relationship between the terminal address (α or β) and the policy control device that processes packets sent and received by the terminal) in the network in which the GW device is deployed. Is holding.

  That is, as shown in Table 1 in FIG. 2, the access network GW apparatus 30 statically holds the correspondence between β and the IP address of the access network policy control apparatus 10. When processing related to a plurality of terminals is performed by the same policy control apparatus, correspondences may be aggregated and held by the notation of subnets.

  When the access network GW apparatus 30 receives a message including β from the core network 200, the access network GW apparatus 30 can transfer the message to an appropriate access network policy control apparatus 10 corresponding to β by referring to the table 1. It is.

  As shown in Table 2 in FIG. 2, the core network GW apparatus 40 statically holds the correspondence between α and the IP address of the core network policy control apparatus 20. When processing related to a plurality of terminals is performed by the same policy control apparatus, correspondences may be aggregated and held by the notation of subnets.

When the core network GW apparatus 40 receives a message including α from the access network 100, the core network GW apparatus 40 can transfer the message to the appropriate core network policy control apparatus 20 corresponding to α by referring to the table 2.
The access network policy control apparatus 10 has a function of receiving a connection notification including a correspondence relationship between α and β, and storing the correspondence relationship between α and β in the storage unit as a table (table A shown in FIG. 2). ing.

  Further, when the access network policy control apparatus 10 receives a message, the access network policy control apparatus 10 refers to α (or β) from the relationship between α and β held as table A with β (or α) in the message as a key. Then, this is compared with α (or β) in the message, and a function (address confirmation unit 13 in FIG. 2) for confirming that the relationship between α and β in the message is correct is provided.

  The core network policy control apparatus 20 has a function of receiving a connection notification including a correspondence relationship between α and β and storing the correspondence relationship between α and β as a table (table B shown in FIG. 2) in the storage unit.

  Further, when the core network policy control device 20 receives the QoS service instruction by α from the application function 24, the core network policy control device 20 adds the information of β to it and controls the access network policy through the core network GW device 40 and the access network GW device 30. A function of notifying the apparatus 10 (address information addition / service instruction unit 25 in FIG. 2) is provided.

  FIG. 3 shows a functional configuration diagram of the access network GW apparatus 30. As illustrated in FIG. 3, the access network GW apparatus 30 includes a message receiving unit 31, a transfer destination access network policy control device specifying unit 32, a message transmitting unit 33, and an address correspondence storage unit 34 that stores the table 1.

  In the configuration of FIG. 3, the message receiving unit 31 receives a message including the correspondence (α, β), and the transfer destination access network policy control device specifying unit 32 uses β in the correspondence in the message. By referring to the correspondence relationship storage unit 34, the access network policy control device 10 as the transfer destination is specified, and its IP address is acquired. Then, the message transmission unit 33 transfers the message to the identified access network policy control device 10 using the IP address.

  FIG. 4 shows a functional configuration diagram of the core network GW apparatus 40. As shown in FIG. 4, the core network GW apparatus 40 includes a message reception unit 41, a transfer destination core network policy control device specifying unit 42, a message transmission unit 43, and an address correspondence storage unit 44 that stores the table 2.

  In the configuration of FIG. 4, the message receiving unit 41 receives a message including the correspondence (α, β), and the transfer destination core network policy control device specifying unit 42 uses the α in the correspondence in the message to address. By referring to the correspondence relationship storage unit 43, the core network policy control device 20 serving as a transfer destination is specified, and its IP address is acquired. Then, the message transmission unit 44 transfers the message to the identified core network policy control device 20 using the IP address.

  Both the core network GW device 40 and the access network GW device 30 can be realized by causing a communication device including a computer configuration to execute a program describing the processing content described in the embodiment. That is, the functions of each unit of the apparatus are realized by executing a program corresponding to the processing executed in each unit using hardware resources such as a CPU and a memory built in a computer constituting the apparatus. It is possible. Further, the program can be distributed to the market via a recording medium such as an FD, CD-ROM, or DVD in which the program is recorded, or a network such as the Internet.

  In addition to realizing the functions by programs as described above, the core network GW device 40 and the access network GW device 30 can also be realized by using a hardware circuit that implements the corresponding functions.

  In each policy control device, functions newly added to the conventional technology may be realized by a program or a hardware circuit.

  The points that can be realized by either the program or the hardware circuit for the function of the GW apparatus and the new function of the policy control apparatus are the same in the other embodiments.

(Processing operation)
Hereinafter, as processing for linking the core network policy control device 20 and the access network policy control device 10 in the first embodiment, (1) terminal connection processing (pre-processing in cooperation), and (2) QoS Processing (actual cooperation) at the time of service execution will be described with reference to FIG.

(1) Processing at the time of terminal connection (pre-processing for specifying cooperation destination)
When the terminal 12 is connected to the access network 100 and the core network 200 and receives an IP address assignment and a tunnel setting (step 1), the router 11 of the access network 100 that has detected this receives the corresponding access network policy control device 10. Is notified of the correspondence between α and β (step 2). The access network policy control apparatus 10 holds this correspondence (step 3).

  The access network policy control device 10 notifies the correspondence relationship to the core network GW device 40 through the access network GW device 30, and the core network GW device 40 refers to the table 2 by the transfer destination core network policy control device specifying unit 42. The appropriate core network policy control device 20 corresponding to α is identified, and the correspondence relationship is notified to the identified core network policy control device 20 (step 4). The core network policy control apparatus 20 holds the received correspondence relationship between α and β as the table B in the storage means (step 5).

(2) QoS service execution processing (actual linkage)
When the core network policy control apparatus 10 receives a policy control instruction by α (step 6), the user network is referred to confirm whether or not the service according to the instruction is permitted for the user and address information. A message (QoS service instruction) including β is created by referring to the table B by the addition / service instruction unit 25, and the message is notified to the access network GW apparatus 30 through the core network GW apparatus 40. The access network GW device 30 that has received the notification refers to the table 1 by the transfer destination access network policy control device specifying unit 32, specifies the access network policy control device 10 corresponding to β, and specifies the specified access network policy control. A policy control instruction is given to the apparatus 10 (step 7).

Then, the access network policy control apparatus 10 refers to the table A by the address confirmation unit 13, confirms the validity of the address included in the received instruction, and refers to the network resource profile and is necessary for the QoS service. A resource (bandwidth) is secured and the QoS service execution is instructed to the router 11 of the access network 100 (step 8).
<Second Embodiment>
(System configuration)
FIG. 5 is a system configuration diagram of a communication network according to the second embodiment. FIG. 5 shows the connection configuration of the apparatus, as well as the tables provided in the apparatus, and the processing procedure to be referred to in the subsequent operation description.

  As shown in FIG. 5, the communication network in the second embodiment has a configuration in which an access network GW device 30 is added to a conventional communication network. When the access network policy control device 10 and the core network policy control device 20 exchange messages with each other, the access network GW device 30 is deployed at a position to relay the message.

  The access network GW apparatus 30 statically holds information on the internal configuration in the access network (correspondence relationship between the terminal address β and the policy control apparatus that processes packets transmitted and received by the terminal) as a table.

  That is, as shown as Table 1 in FIG. 5, the access network GW apparatus 30 statically holds the correspondence between β and the IP address of the access network policy control apparatus 10. When processing related to a plurality of terminals is performed by the same policy control apparatus, correspondences may be aggregated and held by the notation of subnets.

  When the access network GW apparatus 30 receives a message including β from the core network 200, the access network GW apparatus 30 can transfer the message to an appropriate access network policy control apparatus 10 corresponding to β by referring to the table 1. Is possible.

  The access network policy control device 10 receives the connection notification including the correspondence relationship between α and β sent from the core network policy control device 20 through the access network GW device 30, and stores the correspondence relationship between α and β in a storage unit ( A function of storing as a table A) shown in FIG. 5 is provided.

  Further, when the access network policy control apparatus 10 receives a message, the access network policy control apparatus 10 refers to α (or β) based on the relationship between α and β, which holds β (or α) in the message as a key. A function (address confirming unit 13 in FIG. 5) is provided that compares α (or β) in the message and confirms that the relationship between α and β in the message is correct.

  The core network policy control apparatus 20 has a function of receiving a connection notification including a correspondence relationship between α and β from the GW 22 and storing the correspondence relationship between α and β as a table (table B shown in FIG. 5) in the storage unit. Yes.

  Further, when the core network policy control device 20 receives the QoS service instruction by α from the application function 24, the core network policy control device 20 adds the information of β to the table B, adds the information of β to this, and accesses the access network policy through the access network GW device 30. A function of notifying the control device 10 (address information addition / service instruction unit 25 in FIG. 5) is provided.

  The functional configuration of the access network GW apparatus 30 in the second embodiment is the same as the functional configuration shown in FIG.

(Processing operation)
Hereinafter, as processing for linking the core network policy control device 20 and the access network policy control device 10 in the second embodiment, (1) terminal connection processing (pre-processing in cooperation), and (2) QoS Processing (actual cooperation) at the time of service execution will be described with reference to FIG.

(1) Processing at the time of terminal connection (pre-processing for specifying cooperation destination)
When the terminal 12 is connected to the access network 100 and the core network 200 and receives an IP address assignment and tunnel setting (step 1), the GW 22 of the core network 200 that has detected this is sent to the corresponding core network policy control device 20. The correspondence between α and β is notified (step 2). The core network policy control apparatus 20 holds this correspondence as table B (step 3).

  The core network policy control device 20 transmits the correspondence relationship to the access network policy control device 10 through the access network GW device 30, and the access network GW device 30 that relays the correspondence relationship specifies the transfer destination access network policy control device. The unit 32 refers to the table 1 to identify an appropriate access network policy control device 10 corresponding to β, and notifies the identified access network policy control device 10 of the correspondence (step 4). The access network policy control apparatus 10 holds the received correspondence relationship between α and β as table A (step 5).

(2) QoS service execution processing (actual linkage)
When the core network policy control device 20 receives a policy control instruction by α (step 6), the user network is referred to confirm whether the service according to the instruction is a service permitted for the user and address information. The addition / service instruction unit 25 creates a message including β and notifies the access network GW apparatus 30 of the message. The access network GW device 30 that has received the notification refers to the table 1 by the transfer destination access network policy control device specifying unit 32, specifies the appropriate access network policy control device 10 corresponding to β, and specifies the specified access network. A policy control instruction is issued to the policy control apparatus 10 (step 7).

  The access network policy control apparatus 10 refers to the table A by the address confirmation unit 13 to confirm the validity of the address included in the received instruction, and refers to the network resource profile to determine the resource ( Bandwidth) is secured, and the router 11 of the access network 100 is instructed to execute the QoS service (step 8).

<Third Embodiment>
(System configuration)
FIG. 6 is a system configuration diagram of a communication network according to the third embodiment. FIG. 6 shows the connection configuration of the apparatus, as well as each table provided in the apparatus, and the processing procedure referred to in the subsequent operation description.

  The system configuration in the third embodiment and the tables provided in each device are the same as those in the second embodiment.

  In the second embodiment, the access network policy control apparatus 10 receives the connection notification including the correspondence (α, β) from the core network policy control apparatus 20 through the access network GW apparatus 30, whereas In the embodiment, the access network policy control apparatus 10 receives a connection notification including the correspondence (α, β) from the router 11 of the access network 100. This point is different from the second embodiment.

(Processing operation)
Hereinafter, as processing for linking the core network policy control device 20 and the access network policy control device 10 in the third embodiment, (1) terminal connection processing (pre-processing in cooperation), and (2) QoS Processing (actual cooperation) at the time of service execution will be described with reference to FIG.

(1) Processing at the time of terminal connection (pre-processing for specifying cooperation destination)
When the terminal 12 is connected to the access network 100 and the core network 200 and receives an IP address assignment and tunnel setting (step 1), the GW 22 of the core network 200 that has detected this is sent to the corresponding core network policy control device 20. The correspondence between α and β is notified (step 2). The core network policy control apparatus 20 holds this correspondence as table B (step 3).

  Similarly, the access network side router 11 notifies the access network policy control device 10 of the correspondence between α and β (step 4). The access network policy control apparatus 10 holds this correspondence as table A (step 5).

(2) QoS service execution processing (actual linkage)
When the core network policy control device 20 receives a policy control instruction by α (step 6), the user network is referred to confirm whether the service according to the instruction is a service permitted for the user and address information. The addition / service instruction unit 25 creates a message including β and notifies the access network GW apparatus 30 of the message. The access network GW device 30 that has received the notification refers to the table 1 by the transfer destination access network policy control device specifying unit 32, specifies the appropriate access network policy control device 10 corresponding to β, and specifies the specified access network. A policy control instruction is issued to the policy control apparatus 10 (step 7).

  The access network policy control apparatus 10 refers to the table A by the address confirmation unit 13 to confirm the validity of the address included in the received instruction, and refers to the network resource profile to determine the resource ( Bandwidth) is secured, and the router 11 of the access network 100 is instructed to execute the QoS service (step 8).

(Effect of embodiment)
According to the technology according to each embodiment of the present invention, since the access network GW device 30 or the access network GW device 30 and the core network GW device 40 are introduced, the other network is added to the policy control device of the core network / access network. It is no longer necessary to have information on the internal structure of the network (correspondence between the terminal address and the policy control device that processes packets sent and received by the terminal), and the core network and access network can be managed and operated independently. .

  In addition, since the access network policy control apparatus 10 retains the correspondence between α and β, the access network policy control apparatus 10 confirms that the correspondence between α and β notified from the core network 200 is correct. It becomes possible. Thereby, it is possible to prepare for inconsistency of the database managed by the core network policy control apparatus 20.

  The present invention is not limited to the above-described embodiments, and various modifications and applications are possible within the scope of the claims.

DESCRIPTION OF SYMBOLS 10 Access network policy control apparatus 11 Router 12 Terminal 13 Address confirmation part 20 Core network policy control apparatus 21 Router 22 GW
23 Terminal 24 Application function 25 Address information addition / service instruction unit 30 Access network GW device 31 Message reception unit 32 Transfer destination access network policy control unit identification unit 33 Message transmission unit 34 Address correspondence storage unit 40 Core network GW device 41 Message reception Unit 42 Transfer destination core network policy control unit specifying unit 43 Message transmitting unit 44 Address correspondence storage unit 100 Access network 200 Core network

Claims (8)

In a communication network in which a policy control device of a core network and a policy control device of an access network cooperate to provide a QoS service, the communication system includes the policy control device of the core network and the policy control device of the access network,
An access network GW device that relays messages transmitted and received between the core network policy control device and the access network policy control device;
The GW device holds a correspondence relationship between a location-dependent address of a terminal and an address of a policy control device of the access network,
When the policy control device of the core network receives a message including the correspondence between the location-independent address of the terminal and the location-dependent address, the policy control device holds the correspondence included in the message and includes the location-independent address. When the QoS service instruction is received, the location-dependent address is added to the QoS service instruction based on the correspondence relationship, and transmitted to the GW device.
The GW device that has received the QoS service instruction receives the QoS service instruction from the location-dependent address based on the correspondence between the location-dependent address of the terminal and the address of the policy control device of the access network. sending of the policy control device,
When the policy control device of the access network receives a message including the correspondence between the location-independent address and the location-dependent address of the terminal, the policy control device holds the correspondence included in the message, and after holding the correspondence When the QoS service instruction including the position-independent address and the position-dependent address is received, the validity of the address included in the QoS service instruction is confirmed based on the correspondence relationship. system. In a communication network in which a policy control device of a core network and a policy control device of an access network cooperate to provide a QoS service, the communication system includes the policy control device of the core network and the policy control device of the access network,
A core network GW device that relays messages transmitted and received between the core network policy control device and the access network policy control device; and an access network GW device.
The GW device of the core network maintains a correspondence relationship between the location-independent address of the terminal and the address of the policy control device of the core network, and the GW device of the access network includes the location-dependent address of the terminal and the access network Maintains the correspondence with the policy control device address,
When the GW device of the core network receives a message including the correspondence between the location-independent address of the terminal and the location-dependent address, the location-independent address of the terminal and the address of the policy control device of the core network Based on the correspondence relationship, the message is transmitted to the policy control device of the core network corresponding to the position-independent address,
The policy control apparatus of the core network that has received the message maintains the correspondence relationship included in the message, and receives the QoS service instruction including the location-independent address, based on the correspondence relationship, An address is added to the QoS service instruction and transmitted to the GW device of the access network,
The GW device of the access network that has received the QoS service instruction corresponds the QoS service instruction to the location-dependent address based on the correspondence between the location-dependent address of the terminal and the address of the policy control device of the access network. A communication system characterized by transmitting to a policy control device of an access network. When the policy control device of the access network receives a message including the correspondence between the location-independent address and the location-dependent address of the terminal, the policy control device holds the correspondence included in the message, and after holding the correspondence When the message including the position-independent address and the position-dependent address is received from the core network, the validity of the address included in the message is confirmed based on the correspondence relationship. 2. The communication system according to 2. In a communication network in which a policy control device of the core network and a policy control device of the access network cooperate to provide a QoS service, messages transmitted and received between the policy control device of the core network and the policy control device of the access network are transmitted. A communication system comprising a GW device for relaying and a policy control device for the access network ,
The GW device
Correspondence storage means for maintaining a correspondence between the location-dependent address of the terminal and the address of the policy control device of the access network;
Receiving means for receiving a QoS service instruction sent from the policy control device of the core network, the QoS service instruction including a location-dependent address and a location-independent address of the terminal;
Identifying means for identifying a policy control device of an access network corresponding to the location-dependent address by referring to the correspondence relationship storage means based on the location-dependent address in the QoS service instruction ;
Transmitting means for transmitting the QoS service instruction to the policy control device of the access network specified by the specifying means;
When the policy control device of the access network receives a message including the correspondence between the location-independent address and the location-dependent address of the terminal, the policy control device holds the correspondence included in the message, and after holding the correspondence When the QoS service instruction including the position-independent address and the position-dependent address is received, the validity of the address included in the QoS service instruction is confirmed based on the correspondence relationship. A featured communication system . In a communication network in which a policy control device of the core network and a policy control device of the access network cooperate to provide a QoS service, messages transmitted and received between the policy control device of the core network and the policy control device of the access network are transmitted. A GW device for relaying,
Correspondence storage means for maintaining the correspondence between the position-independent address of the terminal and the address of the policy control device of the core network;
Receiving means for receiving a message sent from the policy control device of the access network, the message including a location independent address and a location dependent address of the terminal;
Identifying means for identifying the policy control device of the core network corresponding to the position-independent address by referring to the correspondence storage means based on the position-independent address in the message;
A GW apparatus comprising: a transmission unit configured to transmit the message to a policy control apparatus of a core network identified by the identification unit. Policy control executed by a communication system including a policy control device of the core network and a policy control device of the access network in a communication network in which a policy control device of the core network and a policy control device of the access network provide a QoS service in cooperation with each other A device linkage method,
The communication system further includes an access network GW device that relays messages transmitted and received between the policy control device of the core network and the policy control device of the access network,
The GW device holds a correspondence relationship between a location-dependent address of a terminal and an address of a policy control device of the access network,
When the policy control device of the core network receives a message including the correspondence between the location-independent address of the terminal and the location-dependent address, the policy control device holds the correspondence included in the message and includes the location-independent address. When receiving a QoS service instruction, adding the location-dependent address to the QoS service instruction based on the correspondence relationship, and transmitting to the GW device;
The GW device that has received the QoS service instruction receives the QoS service instruction from the location-dependent address based on the correspondence between the location-dependent address of the terminal and the address of the policy control device of the access network. and sending the to the policy control apparatus,
When the policy control device of the access network receives a message including the correspondence between the location-independent address of the terminal and the location-dependent address, after holding the correspondence included in the message and holding the correspondence When the QoS service instruction including the position-independent address and the position-dependent address is received, the validity of the address included in the QoS service instruction is confirmed based on the correspondence relationship. Control device cooperation method. Policy control executed by a communication system including a policy control device of the core network and a policy control device of the access network in a communication network in which a policy control device of the core network and a policy control device of the access network provide a QoS service in cooperation with each other A device linkage method,
The communication system further includes a core network GW device and an access network GW device that relay messages transmitted and received between the policy control device of the core network and the policy control device of the access network,
The GW device of the core network maintains a correspondence relationship between the location-independent address of the terminal and the address of the policy control device of the core network, and the GW device of the access network includes the location-dependent address of the terminal and the access network Maintains the correspondence with the policy control device address,
When the GW device of the core network receives a message including the correspondence between the location-independent address and the location-dependent address of the terminal, the location-independent address of the terminal and the policy control device address of the core network Transmitting the message to a policy control device of a core network corresponding to the location-independent address based on a correspondence relationship;
When the policy control device of the core network that has received the message holds the correspondence included in the message and receives a QoS service instruction including the location-independent address, the location-dependent configuration is based on the correspondence. Adding an address to the QoS service indication and transmitting it to the GW device of the access network;
The GW device of the access network that has received the QoS service instruction corresponds the QoS service instruction to the location-dependent address based on the correspondence between the location-dependent address of the terminal and the address of the policy control device of the access network. A policy control device cooperation method comprising: transmitting to a policy control device of an access network. When the policy control device of the access network receives a message including the correspondence between the location-independent address of the terminal and the location-dependent address, after holding the correspondence included in the message and holding the correspondence And, when a message including the position-independent address and the position-dependent address is received from the core network, further comprising the step of confirming the validity of the address included in the message based on the correspondence relationship. The policy control device cooperation method according to claim 7.

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