KR20030002938A - Method of PDSN Resource Control in PCF-PDSN Interface - Google Patents

Abstract

PURPOSE: A method for controlling resources of a PDSN(Packet Data Serving Node) on a PCF(Packet Control Function)-PDSN interface is provided to directly manage and control an RPP(RNC(Radio Network Controller)-PDSN Interface Processor) resource in the PDSN on the PCF-PDSN interface. CONSTITUTION: An RNC/PCF informs the resource of an RPP to a PDSN. The PDSN checks the usability of the resource of the RPP. If the resource of the RPP is usable, the PDSN progresses a service to the corresponding resource. If the resource of the RPP is not usable, the PDSN assigns a new RPP resource and informs the assigned RPP resource to the RNC/PCF.

Description

Method of PDSN resource control on PCF-PDNS interface {Method of PDSN Resource Control in PCF-PDSN Interface}

The present invention relates to a CDMA 2000 access network, and more particularly, to a resource control method of a PDSN in which a PDSN can manage RPP resources on a Packet Control Function (PCF) -Packet Data Serving Node (PDSN) interface (R-P interface).

The 3G system is largely divided into a Radio Access Network (RAN) portion corresponding to a wireless network access unit and a Data Core Network (DCN) that provides packet data service.

The interface between the RN (Radio Node) and the PDSN (Packet Data Serving Node) is called an R-P interface.

The RN confirms access to the mobile station and connects the mobile node (MN) with the PDSN.

The PDSN is responsible for the interface between the two networks between the RAN and the DCN.

That is, the data link layer from the mobile is terminated and routed to higher layer protocols on the data network.

In this case, a simple IP call is directly connected to an IP network, and a mobile IP call is connected to a home agent (HA) through a GRE tunnel.

HA is located in MN's home network and serves as a gateway for mobile IP users to access the Internet.

The HA follows the interface defined in the documents of TR45.4 and TR45.6, tunneling with the PDSN for MIP registration, and delivering MIP call packets from the home network to the PDSN.

In the CDMA 2000 access network, the Internet packet data service performs data transmission / reception between a radio terminal and a RNC / Packet Control Function (PCF) according to a packet transmission method in a wireless network section.

In addition, data transmission / reception and signaling are performed between the RNC and the PDSN according to the RP interface, and the home IP address of the terminal is allocated according to the PPP link protocol between the terminal and the PDSN, and the network access identifier (NAI) authentication of the terminal user is performed. Implemented by permission processing.

PDSN connects to wireless network of IMT-2000 system based on 3G-IOS, and based on PPP link matching with mobile terminal when establishing Internet packet data call of mobile terminal, Internet matching function by simple IP and internet matching by mobile IP It provides a function and provides a server access function for authentication, authorization, and billing of the subscriber's Internet network access.

The PDSN is connected to RNC / PCF, which is a node for accessing a wireless network, in Asynchronous Transfer Mode (ATM) or Fast Ethernet (Fast Ethernet), and transmits and receives an A11 signaling message with the RNC / PCF during call setup and release.

In case of A10 traffic message, RP interface is handled by RPC (RNC-PDSN Interface Processor) which is RP interface processor, and in case of A11 signaling message, RPP is received and relayed to PCSN (PDSN Control Processor) which is main control processor. Will be processed.

In particular, when the PDSN receives a registration request message, which is one of the A11 messages, from the RNC / PCF during initial call setup or handoff, the PDSN transmits a registration response message to the RNC / PCF. Was allocated by referring to the DB of the configuration, status, fault, etc. and the RPP information that is the traffic board.

1 is a block diagram illustrating a conventional PDSN resource control method.

As illustrated in FIG. 1, the R-P interface of the PDSN is processed by the RPP when the traffic message is A10, and when the signaling message is A11, the RPP is received and relayed to the PCP which is the main control processor to process the PCP.

However, RP interface of PDSN is processed by RPP in case of A10 traffic message, and in case of A11 signaling message, it is received by RPP and relayed to PCP which is main control processor and processed by PCP. And link must be established.

Therefore, the RNC / PCF also needs to know the Ethernet address of the RPP, and there is an inconvenience in that load sharing should be performed by the RNC / PCF subject.

Accordingly, an object of the present invention is to provide a method in which a PDSN can directly manage and control an RPP resource on a PCF-PDSN interface.

1 is a block diagram showing a conventional PDSN resource control method.

2 is a block diagram showing the configuration of a registration request message according to the present invention;

3 is a block diagram showing the configuration of a registration response message according to the present invention;

The present invention comprises the steps of the RNC / PCF to inform the PDSN of the RPP resources to achieve the above object; Checking the availability of the resource at a PDSN; If the check result is useful, the service proceeds to the corresponding resource, and if not useful, a new RPP resource is allocated and notified to the RNC / PCF.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

2 is a block diagram showing the configuration of a registration request message according to the present invention, Figure 3 is a block diagram showing the configuration of a registration response message according to the present invention.

2 is a block diagram showing the configuration of a registration request message according to the present invention.

The PDSN exchanges the ANC signaling message with the RNC / PCF when the call is established and released with the RNC / PCF. The PDSN receives the registration request message, which is one of the signaling messages during the initial call setup or the handoff, from the RNC / PCF.

In the IP header field, a source address and a destination address are marked.

The source address is the typical connection address from which the message was sent, and the destination address is usually the address of a home or external agent.

In the UDP header field, a source port and a destination port are marked.

S is a cohesion, if the "S" bit is set then the mobile node is asking the home agent to maintain its full mobile cohesion.

If B is set to 'B' as the broadcast datagram, the mobile node will request that any broadcast datagram received on the home network be sent through the mobile node's tunnel.

D is the decapsulation for the mobile node. If set to the 'D' bit, the mobile node will uncapsulate the datagram sent to the COA address.

In other words, the mobile node is using a co-located COA.

If M is set to the minimum encapsulation 'M' bit, then the mobile node keeps using minimal encapsulation over the datagrams sent through the tunnel to the mobile node.

G is GRE encapsulation, if set to the 'G' bit, the mobile node is to keep using minimal encapsulation over datagrams sent through the tunnel to the mobile node.

V requires a mobile node to use Van Jacobson header compression on the link to which its dynamic agent connects to the mobile node.

Lifetime is a time for path confirmation of the R-P interface, and a zero value before registration indicates a request for deregistration.

The home address is the IP address of the mobile node, the home agent is the home agent address of the mobile node, and a care of address (COA) is the address at the end of the tunnel.

Identification is a 64-bit number constructed by the mobile node and used to match registration requests with registration responses.

At this time, the home agent address field 200 of the registration request message is marked with the address of the PDSN, that is, the RPP address.

PDSN then checks the usefulness of the resource and if it accepts it responds with '00H' to the code in the registration response message and if rejected it responds with '88H' to the code in the registration response message and delivers the new resource to the RNC / PCF. .

That is, the PDSN receives such a registration request message from the RNC / PCF at initial call setup or handoff, which is received by the RPP and forwarded to the PCP.

At this point, the home agent address field in the message is marked with a PDSN address, that is, an RPP address. The PCP checks the usefulness of the address and responds with a registration response message.

3 is a block diagram showing the configuration of a registration response message according to the present invention.

The PCP manages the RPP resource table, which integrates and manages the configuration information received from the PLD when PDSN is initialized, and information such as RPP, service authorization procedure, status, and failure.

That is, the PCP checks the usefulness of the address by referring to the RPP resource table. If the resource is an accept, the PCP marks the registration accept in the code field 300 of the registration response message as shown in FIG. 3 as '00H'. .

In addition, if it is rejected, it will mark '88H' indicating registration rejection, and at the same time, it will mark and respond to useful RPP resources in the home agent address field 301.

When the RNC / PCF receives the code value 300 as '88H', the RNC / PCF sends a registration request message to the PDSN again with the newly marked RPP resource in the home agent address field 301, and the PDSN rechecks its usefulness and is useful. Sending a registration response message with the code value 300 as '00H' completes normal call setup.

As described above, the present invention relates to a resource control method of a PDSN on a PCF-PDSN interface. If the RNC resource is allocated to the RNC / PCF and transmitted to the PDSN, the PDSN checks the usefulness of the resource and is not useful. By assigning a new RPP resource and transmitting it to the RNC / PCF, it can be seen that the PDSN can manage and control the RPP resource.

As described above, the present invention relates to a resource control method of a PDSN on a PCF-PDSN interface, and when the RPP resource is transmitted from the RNC / PCF to the PDSN, the PDSN can directly control the RPP resource, and also O & M (Operating & Maintenance, It can be controlled efficiently considering the maintenance and maintenance) dimension.

Claims (1)

The RNC / PCF notifying the PDSN of the resource of the RPP; Checking the availability of the resource at a PDSN; If the check result is useful, the service proceeds to the corresponding resource, and if it is not useful, a method for controlling a resource of the PDSN on the PCF-PDSN interface, comprising: informing a RNC / PCF by allocating a new RPP resource.