KR20040077114A - Down link distribution method using access point name for mobile communication packet network - Google Patents

Abstract

PURPOSE: A method for distributing a downlink packet in a mobile communication packet network is provided to simultaneously transmit a plurality of packet data with a different QoS(Quality of Service). CONSTITUTION: A mobile terminal transmits a PDP(Packet Data Protocol) context activation request message to an SGSN(Serving GPRS Support Node)(S10). The SGSN selects GGSN(Gateway GPRS Serving Node) and transmits a PDP context generation request message to the GGSN(S11). The GGSN transmits a PDP context generation response message to the SGSN(S12). The SGSN transmits a PDP context update request message to the GGSN(S14) and the GGSN transmits a response message according to the update request to the SGSN(S15). The SGSN informs the mobile terminal that the PDP context has been successfully activated(S16).

Description

DOWN LINK DISTRIBUTION METHOD USING ACCESS POINT NAME FOR MOBILE COMMUNICATION PACKET NETWORK}

The present invention relates to a method for distributing downlink packets in a mobile communication packet network. More particularly, the present invention relates to a mobile communication packet network, in which a plurality of service packet data set in different sessions can be simultaneously downloaded using a single IP address. A downlink packet distribution method in a communication packet network.

As is well known, the W-CDMA system applied as a mobile communication packet network is proposed and adopted as the main communication method of the third generation mobile communication service called so-called International Mobile Telecommunications (IMT) -2000, which is 5MHz. It has high frequency and high data rate by realizing 2Mbps data rate by orthogonal variable spreading rate and orthogonal multicode transmission with frequency bandwidth.

The W-CDMA system integrates existing terrestrial and satellite mobile communication systems to secure more freedom of mobility for mobile communication terminals, and secures service mobility for packet data transmission services with various service contents. To be.

On the other hand, mobile communication terminals using a mobile communication packet network constructed in such a W-CDMA system each have a unique IP address, and use the IP address to access service contents that can be accessed through the packet network, and thereby to obtain desired packet data. You can download it.

However, in such a W-CDMA system, it is possible for a subscriber of a mobile communication terminal to receive one data service by establishing a session according to one access point using a single IP address, but simultaneously establishing multiple sessions. Since it is impossible to classify downlink packets by a single IP address of the mobile communication terminal, it is difficult to distribute downlink packets according to multiple session settings, and it is impossible to simultaneously receive a plurality of data services. There is a problem.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to enable distribution of downlink packets by establishing a plurality of sessions using a single IP address in a mobile communication terminal so that different QoS ( To provide a downlink packet distribution method in a mobile communication packet network capable of simultaneously performing a plurality of data services with Quality Of Service.

1 is a diagram showing the configuration of a mobile communication packet network to which the downlink packet distribution method of the present invention is applied;

2 is a flowchart illustrating a process of setting up a session for downloading packet data in a mobile communication terminal according to a preferred embodiment of the present invention;

3 is a flowchart illustrating an additional process of setting up a session for classifying packets of a downlink when a mobile communication terminal uses a static IP according to a preferred embodiment of the present invention;

4 is a flowchart illustrating an additional process of setting up a session for classifying packets of a downlink when a mobile communication terminal uses dynamic IP according to a preferred embodiment of the present invention;

FIG. 5 illustrates a process of supporting classification of downlink packets according to different APNs using the same IP address by setting different sessions in a mobile communication terminal according to an embodiment of the present invention. This is a flowchart.

<Description of the symbols for the main parts of the drawings>

10: mobile communication terminal, 20: wireless access network (UTRAN),

30: Wireless access management device (SGSN), 40: Packet network management device (GGSN),

50: subscriber information management server (HSS), 60: multimedia IP network.

According to an embodiment of the present invention to achieve the above object, to perform a packet data protocol (PDP) context activation request including the first message information to establish a first session using a static IP address in the mobile communication terminal And setting a first session by generating a PDP context according to the first message information in the mobile communication packet network, and setting the second session using a static IP address in the mobile communication terminal. Performing a PDP context activation request comprising: generating a PDP context according to the second message information in the mobile communication packet network to establish a second session; and first and second message information in the mobile communication packet network; Classifying and transmitting the downlink packet by a filter defined according to A downlink packet distribution method in a mobile communication packet network is provided.

According to another embodiment of the present invention to achieve the above object, performing a PDP context activation request including the first message information to establish a first session using a dynamic IP address in the mobile communication terminal, Creating a PDP context according to the first message information in a mobile communication packet network to establish a first session, and in the mobile communication terminal, a PDP including second message information to establish a second session using a dynamic IP address Performing a context activation request, generating a PDP context according to the second message information in the mobile communication packet network, establishing a second session, and defining the first and second message information in the mobile communication packet network A movement comprising the step of classifying and transmitting the downlink packet by a filter It provides downlink packet distribution method in a new packet.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a configuration of a mobile communication packet network to which the downlink packet distribution method of the present invention is applied.

As shown in FIG. 1, a mobile communication packet network to which the method of the present invention is applied includes a mobile communication terminal 10, a UMTS Terrestrial Radio Access Network (UTRAN) 20, and a radio access management apparatus (Serving GPRS Support). Node; SGSN 30, Gateway GPRS Support Node (GGSN) 40, Home Subscriber Server (HSS) 50, Multimedia IP Network 60 It is composed.

The mobile communication terminal 10 has a single unique static IP and dynamic IP, and uses a single static IP or dynamic IP to assign a plurality of access point names (APNs). Accordingly, by setting up multiple sessions, multiple service packets can be simultaneously downloaded for multiple QoS.

The radio access network 20 is wirelessly connected to the mobile communication terminal 10 and is responsible for radio transmission and reception of a packet data frame, which is a radio transceiver subsystem (RTS) and a radio network controller (Radio Network). Controller; RNC).

A radio transceiver subsystem (RTS) in the radio access network 20 converts an intermediate frequency signal into an RF signal through a forward link, and converts an RF signal into an intermediate frequency signal through a reverse link and processes a signal for a wireless communication signal. In this case, it performs a wireless connection termination function with the mobile communication terminal 10, and transmits and receives voice, video and traffic data in a W-CDMA manner, and transmits and receives various information with the mobile communication terminal 10. In charge.

A radio network controller (RNC) in the radio access network 20 is in charge of wired and wireless channel management, protocol matching of a mobile communication terminal, soft handoff processing, protocol processing of a mobile communication packet network, and management function of a wireless transceiver subsystem. do.

In the figure, the radio access management device 30 is to provide an ATM-based switch and routing connection to perform the service of the General Packet Radio Service (GPRS), which is a mobility to the GPRS for the processing of packet data It performs management function, session management function, authentication and charging function according to GPRS.

Here, the radio access management device 30 is a PDP (Packet Data Protocol) context request message including a static IP address or dynamic IP address and an access point name (APN) from the mobile communication terminal 10 When receiving, the packet network management device 40 allows a static IP address or a dynamic IP address to be assigned while generating a PDP context, and accesses the radio network by establishing a radio access bearer (RAB) with the mobile communication terminal 10. Allow one session to be established according to the point name (APN).

In addition, the wireless access management apparatus 30 transmits another access point name (APN) in order to establish a plurality of sessions in the mobile communication terminal 10 with one session set by the access point name (APN). If so, it is possible to additionally establish a session according to the other APN.

The packet network management device 40 is an IP-based serving node that provides high-speed packet data processing for packet data services of GPRS, which provides mobility of packet data services and processing functions of various data related protocols. IP address allocation, domain address translation, billing and maintenance functions are performed.

Here, the packet network management apparatus 40 sets a PDP context by using subscriber information from the radio access management apparatus 30 and a plurality of access point names (APNs) transmitted from the mobile communication terminal 10, The downlink packet is classified and transmitted by a predefined filter according to the access point name (APN).

In addition, the packet network management apparatus 40 updates the PDP context when the radio access management apparatus 30 is notified of a state in which the QoS is downgraded.

The subscriber information management server 50 has subscriber information for a mobile communication terminal subscriber using a mobile communication packet network, maintains a master list of data services related to each subscriber, and performs management of location information of the subscriber. It provides tracking function for access means and performs authentication related function for mobile communication subscriber.

The multimedia IP network 60 constructs service contents for data services of various QoS, and provides an IP-based packet data transmission service to the mobile communication terminal 10.

Next, an operation of establishing a session through a single IP address from the mobile communication terminal in the downlink packet distribution method in the mobile communication packet network of the present invention made as described above will be described in detail with reference to the flowchart of FIG. 2.

First, the mobile communication terminal 10 transmits a packet data protocol (PDP) context activation request message (PDP) by accessing the radio access management apparatus 30 through the radio access network 20. Determining whether to use a static IP address or dynamic IP address for downloading, while selecting a dynamic IP address or dynamic IP address, QoS to use, selection of a reference point of a network to be externally connected or a service for selecting a service. The message including the point name APN is transmitted (step S10).

Accordingly, the wireless access management device 30 extracts subscriber information for the subscriber of the mobile communication terminal 10 already obtained from the subscriber information management server 50, and access point name from the mobile communication terminal 10. The packet network management apparatus 40 is selected based on the APN and the subscriber information, and the PDP context creation request message is transmitted to the selected packet network management apparatus 40 (step S11). After generating a PDP context, a dynamic IP address or a static IP address is allocated, and a PDP context creation response message is transmitted to the radio access management device 30 (step S12).

In this state, the radio access management device 30 establishes a radio access controller (RNC) and a radio access bearer (RAB) of the radio access network 20 with an appropriate QoS for the mobile communication terminal 10. The radio network controller (RNC) establishes a radio access bearer (RAB) with the mobile communication terminal 10 (step S13).

On the other hand, if the QoS is downgraded during the radio access bearer setup process of step S13, the radio access management apparatus 30 sends a PDP context update request message to inform the packet network management apparatus 40 that the QoS is downgraded. The packet network management apparatus 40 transmits a response message according to the update request to the radio access management apparatus 30 (step S15).

Accordingly, the radio access management device 30 notifies the mobile communication terminal 10 that the PDP context has been successfully activated. In this case, when the mobile communication terminal 10 requests a dynamic IP address, The dynamic IP address is informed (step S16).

Next, with reference to the flowchart of FIG. 3, a further procedure of setting up a session for classifying packets of a downlink when a mobile communication terminal uses a static IP according to an embodiment of the present invention will be described in detail.

First, the mobile communication terminal 10 activates a PDP context including a static IP and a first access point name APN1 to establish a first session by accessing the radio access management device 30 through the radio access network 20. The request message is transmitted (step S20), and the wireless access management apparatus 30 extracts subscriber information for the subscriber of the corresponding mobile communication terminal 10 already obtained from the subscriber information management server 50, and then the mobile communication. The packet network management apparatus 40 is selected based on the first access point name APN1 and the subscriber information from the terminal 10, and the PDP context creation request message is transmitted to the selected packet network management apparatus 40 (step S21).

Accordingly, the packet network management apparatus 40 generates a PDP context according to a generation request from the radio access management apparatus 30 and transmits a PDP context creation response message to the radio access management apparatus 30 (step S22). .

In this state, the radio access management device 30 establishes a radio network controller (RNC) and a radio access bearer (RAB) of the radio access network 20 with an appropriate QoS for the mobile communication terminal 10. The radio network controller (RNC) establishes a radio access bearer (RAB) with the mobile communication terminal 10 (step S23).

If the QoS is downgraded during the radio access bearer setup process of step S23, the radio access management apparatus 30 transmits a PDP context update request message to inform the packet network management apparatus 40 that the QoS is downgraded. (Step S24), the packet network management apparatus 40 transmits a response message according to the update request to the radio access management apparatus 30 (step S25).

Accordingly, the radio access management device 30 notifies the mobile communication terminal 10 that the PDP context has been successfully activated (step S26).

Meanwhile, the mobile communication terminal 10 transmits a PDP context activation request message including a static IP and a second access point name (APN2) to additionally establish another session (step S27). In operation 30, the packet network management apparatus 40 is selected based on the second access point name APN2 and the subscriber information from the mobile communication terminal 10, and the PDP context generation request is made to the selected packet network management apparatus 40. The message is transmitted (step S28).

Accordingly, the packet network management apparatus 40 generates a PDP context according to the generation request from the radio access management apparatus 30 and transmits a PDP context creation response message to the radio access management apparatus 30 (step S29). .

In this state, the apparatus 30 for managing radio access wirelessly communicates with the mobile communication terminal 10 via a radio network controller (RNC) of the radio access network 20 with an appropriate QoS for the mobile communication terminal 10. The connection bearer RAB is set (step S30).

In addition, when the QoS is downgraded in the process of configuring the radio access bearer, the radio access management apparatus 30 transmits a PDP context update request message to inform the packet network management apparatus 40 that the QoS is downgraded. (Step S31), The packet network management apparatus 40 transmits a response message according to the update request to the radio access management apparatus 30 (step S32).

Accordingly, the radio access management device 30 notifies the mobile communication terminal 10 that the PDP context has been successfully activated (step S33).

Accordingly, the packet network management apparatus 40 classifies a plurality of downlink packets by a predefined filter as a plurality of sessions are established according to a plurality of first and second access point names APN1 and APN2. Simultaneous transmission to the mobile communication terminal 10.

Next, with reference to the flowchart of FIG. 4, a further procedure of setting up a session for classifying downlink packets when the mobile communication terminal uses dynamic IP will be described in detail.

First, in the mobile communication terminal 10, a PDP context including a dynamic IP and a first access point name (APN1) for establishing a first session by accessing the radio access management device 30 through the radio access network 20 is established. The activation request message is transmitted (step S40), and the wireless access management apparatus 30 receives the subscriber information from the subscriber information management server 50 and the first access point name APN1 from the mobile communication terminal 10. Based on this, the packet network management apparatus 40 is selected, and the PDP context creation request message is transmitted to the selected packet network management apparatus 40 (step S41).

Accordingly, the packet network management apparatus 40 generates a PDP context in response to a generation request from the radio access management apparatus 30, allocates a dynamic IP address, and sends a PDP context creation response message to the radio access management apparatus 30. Transfer (step S42).

In this state, the radio access management device 30 establishes a radio network controller (RNC) and a radio access bearer (RAB) of the radio access network 20 with an appropriate QoS for the mobile communication terminal 10. The radio network controller (RNC) establishes a radio access bearer (RAB) with the mobile communication terminal 10 (step S43).

If the QoS is downgraded during the radio access bearer setup process, the radio access management apparatus 30 transmits a PDP context update request message to inform the packet network management apparatus 40 that the QoS is downgraded (step). S44), the packet network management apparatus 40 transmits a response message according to the update request to the radio access management apparatus 30 (step S45).

Accordingly, the radio access management device 30 notifies the mobile communication terminal 10 that the PDP context has been successfully activated and informs the dynamic IP address (step S46).

Meanwhile, the mobile communication terminal 10 transmits a PDP context activation request message including a dynamic IP and a second access point name APN2 to additionally establish another session (step S47). In operation 30, the packet network management apparatus 40 is selected based on the second access point name APN2 and the subscriber information from the mobile communication terminal 10, and the PDP context generation request is made to the selected packet network management apparatus 40. The message is transmitted (step S48).

Accordingly, the packet network management apparatus 40 checks whether there is a dynamic IP address already allocated to the mobile communication terminal 10 according to a request from the radio access management apparatus 30. If there is a dynamic IP address assigned to and a filter for a downlink packet is set, the previously allocated dynamic IP address is allocated as it is, and the PDP context creation response message is transmitted to the radio access management device 30 ( Step S49).

On the other hand, the packet network management device 40 allows direct allocation of a dynamic IP address for the mobile communication terminal 10, but DHCP (Dynamic Host) existing in the same packet network as the packet network management device 40. Configuration Protocol) allows for assignment through a server.

In this state, the apparatus 30 for managing radio access wirelessly communicates with the mobile communication terminal 10 via a radio network controller (RNC) of the radio access network 20 with an appropriate QoS for the mobile communication terminal 10. The connection bearer RAB is set (step S50).

In addition, when the QoS is downgraded in the process of configuring the radio access bearer, the radio access management apparatus 30 transmits a PDP context update request message to inform the packet network management apparatus 40 that the QoS is downgraded. (Step S51), The packet network management apparatus 40 transmits a response message according to the update request to the radio access management apparatus 30 (step S52).

Accordingly, the radio access management device 30 notifies the mobile communication terminal 10 that the PDP context has been successfully activated and informs the dynamic IP address (step S53).

Accordingly, in the packet network management apparatus 40, a plurality of sessions according to a plurality of first and second access point names APN1 and APN2 are set for a single dynamic IP address. Downlink packets are classified and transmitted simultaneously to the mobile communication terminal 10.

Next, referring to the flowchart of FIG. 5, according to an embodiment of the present invention, classification of downlink packets according to different APNs using the same IP address by setting different sessions in the mobile communication terminal is performed. It describes in detail the process of supporting the.

First, the radio access management device 30 determines whether the mobile communication terminal 10 requires the assignment of a static IP address while the mobile communication terminal 10 is connected through the wireless access network 20. (Step S60).

As a result of the determination, when it is determined that the radio access management device 30 requests the assignment of the static IP address by the transmission of the static IP address from the mobile communication terminal 10, the static communication of the mobile communication terminal 10 is performed. It is determined whether or not a session already established for the IP address exists (step S61).

As a result of the determination, if it is determined that there is a session already established for the static IP address, the radio access management apparatus 30 is down according to the access point name (APN) set in the packet network management apparatus 40. It is determined whether or not link packet classification is possible (step S62).

As a result of the determination, if it is determined that the classification of the downlink packet is not possible, the radio access management apparatus 30 performs a process of rejecting setting of another session (step S63).

However, the access point is determined according to the determination result of the step S62 in the state that it is determined that there is no session already established for the static IP address according to the determination result of the step S61, or that the session that is already set exists. If it is determined that the classification of the downlink packet according to the name APN is possible, a process of accepting the setting of another session is performed (step S64).

On the other hand, if it is determined in step S60 that the mobile communication terminal 10 does not require the assignment of the static IP address, the radio access management apparatus 30 determines that the allocation of the dynamic IP address is required, It is judged whether or not a session already established for the IP address exists (step S65).

As a result of the determination, if it is determined that there is no session already established, the radio access management apparatus 30 assigns the dynamic IP address to the mobile communication terminal 10 and accepts the session setup (step S66).

On the other hand, if it is determined that there is a session already established for the dynamic IP address, the radio access management device 30 is down according to the access point name (APN) set in the packet network management device 40. It is determined whether or not link packet classification is possible (step S67).

As a result of the determination, if it is determined that the downlink packet can be classified according to the access point name (APN), the radio access management apparatus 30 assigns a pre-assigned dynamic IP address to be used in an already established session. Accept the session setup (step S68).

However, if it is determined that the classification of the downlink packet according to the access point name (APN) is not possible according to the determination result of step S67, the radio access management apparatus 30 assigns a new dynamic IP address to the session. A process of accepting the setting is performed (step S69).

On the other hand, the present invention is not limited to the above-described typical preferred embodiments, but can be carried out in various ways without departing from the gist of the present invention, various modifications, alterations, substitutions or additions are common in the art Those who have knowledge will easily understand. If the implementation by such improvement, change, replacement or addition falls within the scope of the appended claims, the technical idea should also be regarded as belonging to the present invention.

As described above, according to the present invention, a subscriber of a mobile communication terminal in a W-CDMA mobile communication packet network uses a single IP address such as a static IP address or a dynamic IP address to establish several sessions according to different access point names. By enabling the configuration, it is possible to distribute the downlink packets for the multiple sessions, thereby making it possible to use a service that can simultaneously receive a plurality of packet data with different QoS.

Claims (16)

A first step of performing a packet data protocol (PDP) context activation request including first message information to establish a first session using a static IP address in a mobile communication terminal; A second step of establishing a first session by generating a PDP context according to the first message information in the mobile communication packet network; A third step of performing a PDP context activation request including second message information to establish a second session by using the static IP address in the mobile communication terminal; A fourth step of establishing a second session by generating a PDP context according to the second message information in the mobile communication packet network; And a fifth step of classifying and transmitting a downlink packet by a filter defined according to first and second message information in the mobile communication packet network. The method of claim 1, In the first step, the first message information from the mobile communication terminal includes a static IP address, a first access point name (APN1), QoS to be used, In the third step, the second message information from the mobile communication terminal in the mobile communication packet network, characterized in that the first message information includes a static IP address, a second access point name (APN2), QoS to use Downlink packet distribution method. The method according to claim 1 or 2, The second step may include requesting, by the SGSN of the mobile communication packet network, generating a PDP context from a packet network management apparatus (GGSN) based on first message information; Generating a PDP context by the first message information in the packet network management apparatus (GGSN); And setting up a radio access bearer (RAB) with an appropriate QoS with the mobile communication terminal in the radio access management apparatus (SGSN). The method of claim 3, wherein The wireless access management device (SGSN) is configured to select a packet network management device (GGSN) based on the first access point name (APN1) and the subscriber information of the mobile communication terminal, downlink packet distribution in the mobile communication packet network Way. The method of claim 3, wherein The setting of the radio bearer (RAB) may include requesting an update of a PDP context from the packet network management device (GGSN) when QoS is downgraded in the radio access management device (SGSN); And updating the PDP context in the packet network management apparatus (GGSN). The method according to claim 1 or 2, The fourth step may include requesting generation of a PDP context from a packet network management device (GGSN) on the basis of the second message information in the wireless access management device (SGSN) of the mobile communication packet network; Generating a PDP context by the second message information in the packet network management apparatus (GGSN); And setting up a radio access bearer (RAB) with an appropriate QoS with the mobile communication terminal in the radio access management apparatus (SGSN). The method of claim 6, The wireless access management device (SGSN) is configured to select a packet network management device (GGSN) based on the second access point name (APN1) and the subscriber information of the mobile communication terminal, downlink packet distribution in the mobile communication packet network Way. The method of claim 6, The setting of the radio bearer (RAB) may include requesting an update of a PDP context from the packet network management device (GGSN) when QoS is downgraded in the radio access management device (SGSN); And updating the PDP context in the packet network management apparatus (GGSN). A first step of performing a PDP context activation request including first message information to establish a first session using a dynamic IP address in a mobile communication terminal; A second step of establishing a first session by generating a PDP context according to the first message information in the mobile communication packet network; A third step of performing a PDP context activation request including second message information to establish a second session by using the dynamic IP address in the mobile communication terminal; A fourth step of establishing a second session by generating a PDP context according to the second message information in the mobile communication packet network; And a fifth step of classifying and transmitting a downlink packet by a filter defined according to first and second message information in the mobile communication packet network. The method of claim 9, In the first step, the first message information from the mobile communication terminal includes a dynamic IP address, a first access point name (APN1), and a QoS to be used. In the third step, the second message information from the mobile communication terminal is a mobile communication packet network, characterized in that the first message information includes a dynamic IP address, a second access point name (APN2), and the QoS to be used. Downlink Packet Distribution Method in. The method according to claim 9 or 10, The second step may include requesting, by the SGSN of the mobile communication packet network, generating a PDP context from a packet network management apparatus (GGSN) based on first message information; Generating a PDP context by the first message information in the packet network management apparatus (GGSN); And setting up a radio access bearer (RAB) with an appropriate QoS with the mobile communication terminal in the radio access management apparatus (SGSN). The method of claim 11, The wireless access management device (SGSN) is configured to select a packet network management device (GGSN) based on the first access point name (APN1) and the subscriber information of the mobile communication terminal characterized in that the downlink packet distribution in the mobile communication packet network Way. The method of claim 11, The setting of the radio bearer (RAB) may include requesting an update of a PDP context from the packet network management device (GGSN) when QoS is downgraded in the radio access management device (SGSN); And updating the PDP context in the packet network management apparatus (GGSN). The method according to claim 9 or 10, The fourth step may include requesting generation of a PDP context from a packet network management device (GGSN) on the basis of the second message information in the wireless access management device (SGSN) of the mobile communication packet network; Generating a PDP context by the second message information in the packet network management apparatus (GGSN); And setting up a radio access bearer (RAB) with an appropriate QoS with the mobile communication terminal in the radio access management apparatus (SGSN). The method of claim 14, The wireless access management device (SGSN) is configured to select a packet network management device (GGSN) based on the second access point name (APN1) and the subscriber information of the mobile communication terminal, downlink packet distribution in the mobile communication packet network Way. The method of claim 14, The setting of the radio bearer (RAB) may include requesting an update of a PDP context from the packet network management device (GGSN) when QoS is downgraded in the radio access management device (SGSN); And updating the PDP context in the packet network management apparatus (GGSN).