KR100413975B1 - The connection method to embrace Multi-RNC - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a lu connection management method for accommodating multiple control stations (RNC) and a computer readable recording medium having recorded thereon a program for realizing the method.

2. The technical problem to be solved by the invention

In order to accommodate multiple control stations (RNCs), the present invention provides a separate signaling for an Iu Signaling Connection ID in a transaction management apparatus of a Radio Access Network Application Protocol (RANAP) of a Serving GPRS Support Node (SGSN). To provide an Iu connection management method that integrates and manages the reference number of SS7 (Signaling System No. 7) without management and a computer-readable recording medium that records a program for realizing the method.

3. Summary of Solution to Invention

The present invention provides an Iu connection management method for accepting a multiple control station (RNC), which is applied to a transaction management apparatus, comprising: a first step in which a higher transaction management apparatus receives a connection ID from an upper layer; A second step of receiving, by the upper transaction management device from the lower layer, a connection ID; and a third step of generating and managing an integrated connection ID by integrating the upper connection ID and the lower connection ID by the upper transaction management device.

4. Important uses of the invention

The present invention is used in connection management for accommodating multiple control stations (RNC) in a wireless communication network.

Description

IB connection management method for multi-controller (RCN) acceptance {The connection method to embrace Multi-RNC}

The present invention relates to an Iu connection management method for accommodating multiple control stations (RNC) and a computer-readable recording medium recording a program for realizing the method. More specifically, the present invention relates to a packet domain network of an asynchronous IMT-2000 core network. Efficient between Control Station (RNC) and Serving GPRS Support Node (SGSN) to accommodate Radio Access Network Controller (RNC) in Universal Mobile Telecommunications System / General Packet Radio System (UMTS / GRPS) A computer-readable recording medium having a lu connection management method and a program for realizing the method.

Before describing the problems of the conventional scheme, the structure and protocol stack of the conventional scheme and the network to which the present invention is applied are as follows.

1 is a structural diagram of a general UMTS / GPRS network.

In general, the UMTS / GPRS network 100 is a domain for translating a domain address into an IP address and a serving GPRS support node (SGSN) 101 which performs key control functions such as location registration / update, authentication, and session management of a packet subscriber. A Domain Name Server (DNS) 102 and a Gateway GPRS Support Node (GGSN) 103 serving as a gateway to the external Internet, and a Switch / Router 104 connecting them.

FIG. 2 is an embodiment architecture diagram illustrating a protocol stack between a generic control station (RNC) and a serving GPRS support node (SGSN).

As shown in FIG. 2, the protocol stack between the control station (RNC) 301, 302 and the serving GPRS support node (SGSN) 101 consists of the lower SCCP / MTP-3b / AAL5 / ATM 200, Above, it includes a total of three layers, such as the RANAP 210 that performs a matching function with the control station (RNC) and the SM / PMM / HO 220 that is responsible for the actual packet call control.

As shown in Figs. 1 and 2, in general, a subscriber is a UMTS via a packet terminal via a Radio Access Network Subsystem (RNS) 105 consisting of a Control Station (RNC) 301, 302 and a Node-B. Internet service is provided from the external Internet 107 by accessing the / GPRS network 100. At this time, when a plurality of subscribers are connected to the UMTS / GRPS network 100, if the conventional method is followed, connection management may be problematic in the RANAP 210 of the protocol stack shown in FIG. This is described in FIG. 3.

FIG. 3 is a diagram illustrating a conventional structure of connection management, in which one serving GPRS support node 0 (SGSN 0) 303 has a plurality of control stations 0 (RNC 0) 301 and a control station 1 (RNC 1). In connection with 302, it is shown that the connection with the multiple control station (RNC) cannot be distinguished by the Iu signal connection ID alone.

The same Iu signal connection ID is assigned to the control station 0 (RNC 0) 301 and the control station 1 (RNC 1) 302 to establish a connection to one serving GPRS support node 0 (SGSN 0) 303 at the same time. In the case of the RANAP 210 of the serving GPRS support node 0 (SGSN 0) 303, the connection between the control station 0 (RNC 0) 301 and the control station 1 (RNC 1) 302 is determined using only the Iu signal connection ID. Indistinguishable Thus, to distinguish between the above connections, additional control station (RNC) IDs are needed as described in Table 1.

Table index Iu signal connection ID Control Station (RNC) ID Reference number ..... 0 0 0a 0 .... One 0 0b One .... 2 ..... 3 ..... 4 .....

However, as one piece of information that distinguishes the above connections from the upper SM / PMM / HO 220, that is, the RANAP 210 is added to the RANAP 210 that needs to maintain / manage transactions with only the Iu signal connection ID. There is a difficult problem to deliver.

The present invention has been proposed to solve the above problems,

Separate management of Iu Signaling Connection IDs in the Transaction Management Device of the Radio Access Network Application Protocol (RANAP) of the Serving GPRS Support Node (SGSN) 101 to accommodate multiple Control Stations (RNCs). It is an object of the present invention to provide a u connection management method for managing by integrating with a reference number of SS7 (Signaling System No. 7) and a computer-readable recording medium recording a program for realizing the method.

1 is a structural diagram of a typical UMTS / GPRS network.

FIG. 2 is an embodiment architecture diagram illustrating a protocol stack between a generic control station (RNC) and a serving GPRS support node (SGSN).

Figure 3 is a structure diagram of one embodiment showing a conventional connection management.

Figure 4 is a structure diagram of one embodiment of RANAP to which the present invention is applied.

5 is a diagram illustrating an embodiment of a method for managing lu connection according to the present invention;

6 is a flowchart illustrating an embodiment of a method for managing lu connection according to the present invention;

* Explanation of symbols for the main parts of the drawings

501: Iu signal connection ID

502: reference number

503: connection ID

The present invention for achieving the above object, in the Iu connection management method for accepting multiple control stations (RNC), which is applied to a transaction management device, the first step of the upper transaction management device receives the connection ID from the upper layer ; A second step in which the upper transaction management apparatus receives the connection ID from the lower layer; and a third step in which the upper transaction management apparatus generates and manages an integrated connection ID by integrating the upper connection ID and the lower connection ID. Should be.

On the other hand, the present invention, the transaction management system having a microprocessor is a first function that the upper transaction management device receives the connection ID from the upper layer; A second function in which a higher transaction management device receives a connection ID from a lower layer; and a program for realizing a third function of generating and managing an integrated connection ID by integrating the upper connection ID and a lower connection ID by the upper transaction management device; Provide a computer readable recording medium having recorded thereon.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a structural diagram of an embodiment of RANAP to which the present invention is applied.

As shown in FIG. 4, the RANAP includes an encryption unit 211 / decryptor 212, a RANAP primitive transmitter 213 / receiver 214, an SCCP primitive transmitter 215 / receiver 216, and an upper SM / PMM. Transaction management unit 217 that manages the transaction (transaction) and Iu signal connection with / HO and sub-SCCP, timer / IPC management unit 218 for managing the timer (Timer) and IPC (Inter-Process Communication).

The RANAP primitive receiver 214 receives a message from the SM / PMM / HO, encodes it through the encryption unit 211, and then transmits the primitive to the SCCP through the SCCP primitive transmitter 215.

The RANAP primitive transmitter 213 distributes the message received from the remote control station (RNC) by the SCCP primitive receiver 216 to the SM / PMM / HO. In case of initial UE message and direct transmission message, the protocol identifier (4 bits) of NAS-PDU is analyzed and transmitted to SM for SM, HO for HO, and PMM for PMM. do. When a syntax error or semantic error occurs in the decoder 212, the RANAP primitive transmitter 213 performs an abnormal processing procedure.

The SCCP primitive receiver 216 decodes the SCCP primitive received from the SCCP, performs a syntax check, and then decodes the RANAP message if there is no error.

The SCCP primitive transmitter 215 designates an address and a service type such as a signaling point code (SPC) and an SSN (subsystem number) of a control station (RNC), and then generates and transmits an SCCP primitive to the SCCP.

The operation of the encryption unit 211 is driven by the RANAP primitive receiving unit 214 to encode the RANAP information element, and then generate a RANAP message.

The decoder 212 is driven by the SCCP primitive receiver 216 to decode the information element by analyzing the RANAP message received from the SCCP and then check the syntax and semantics.

The transaction manager 217 manages information on a connection ID in order to maintain a transaction between the RPHB, SM, PMM, HO, and SCCP.

The timer / IPC manager 218 manages an IPC that performs timer management and message transmission and reception for a transaction.

5 is a diagram illustrating an embodiment of an Iu connection management method according to the present invention.

In general, there is a unique connection for each layer in each protocol stack (FIG. 2).

The protocol stack related to the connection between the serving GPRS support node (SGSN) 101 and the control station (RNC) includes the RANAP 210 and SS7 (referring to SCCP and MTP3-b). If a connection is required with the same connection ID 503 as shown in FIG. 3 only, the control station 0 (RNC 0) 301 and the control station 1 (RNC 1) 302 on the RANAP (210) Can not distinguish the connection of. Thus, to distinguish the connection, a control station (RNC) ID must be added. However, there is a problem in adding a new control station (RNC) ID. The above has been mentioned in the technical field to which the invention belongs.

So, in order to solve this problem, by using the connection of the lower SS7 which can distinguish the control station 0 (RNC 0) 301 and the control station 1 (RNC 1) 302, the Iu signal connection ID of the RANAP 210 ( A connection ID 503 incorporating 501 and reference number 502 of SS7 is shown in FIG.

The connection ID 503 can be integrated in the present invention in consideration of both the constraints in the RANAP 210 and the constraints in SS7.

Constraints in terms of operation of the Iu signal connection ID 501 and reference number 502 are as follows.

The Iu signal connection ID 501 sets the highest bit to '0' when it is connected from the control station (RNC) to the serving GPRS support node (SGSN) 101. In the serving GPRS support node (SGSN) 101, the highest bit is set to '1' in the case of the control station (RNC).

However, the reference numeral 502 cannot be used at present because it uses the case where all 24 bits are '1' as reserved bits.

Thus, when the connection ID 503 is a connection from the control station (RNC) to the serving GPRS support node (SGSN) 101, the highest bit among the 24 bits of the connection ID is set to '0' and the serving GPRS support node is set. In the case of the connection from the (SGSN) 101 to the control station (RNC), the highest bit among the 24 bits of the connection ID is set to '1'. And all 24 bits are set to '1' for reservation.

Table 2 below shows how the connection ID 503 described above is managed.

Table index Connection id Control Station (RNC) ID ........ 0 0 0a ........ One One 0b ........

As shown in Table 2, even if a connection is established with the same Iu signal connection ID in multiple control stations (RNC), this can be distinguished.

6 is a flowchart illustrating an embodiment of a method for managing lu connection according to the present invention.

As shown in FIG. 6, the RANAP of the Serving GPRS Support Node (SGSN) 101 receives the Iu signal connection ID from the PMM / SM / HO (601). In operation 603, a reference number is received from SS7 (602). Then, a connection ID, which is one integrated ID in consideration of the constraints of the Iu signal connection ID and the reference number, is created and managed (603).

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

The present invention manages a connection between a control station (RNC) and a serving GPRS support node (SGSN) with one unified identity by a serving GPRS support node (SGSN), thereby minimizing redundancy in connection management with the control station (RNC). In addition, it minimizes the use of memory in the protocol stack and simplifies internal connection table management.

Claims (3)

In the Iu connection management method for accommodating multiple control station (RNC), applied to a transaction management device A first step of receiving, by the upper transaction management apparatus, a connection ID from an upper layer; A second step in which the upper transaction management device receives the connection ID from the lower layer; and A third step in which an upper transaction management device generates an integrated connection ID by managing the upper connection ID and the lower connection ID; Iu connection management method for accommodating multiple control stations (RNC) comprising a. The method of claim 1, The upper connection ID is Iu signal connection Aida, and the lower connection ID is a reference number from SS7 (Signalin System No. 7) Iu connection management method for receiving multiple control stations (RNC). In a transaction management system with a microprocessor A first function of receiving, by the upper transaction management apparatus, a connection ID from an upper layer; A second function in which the upper transaction management device receives a connection ID from a lower layer: and And a computer readable recording medium having recorded thereon a program for realizing a third function in which an upper transaction management device integrates the upper connection ID and lower connection ID to generate and manage an integrated connection ID.