KR100339206B1 - Device and method for between layer and layer using object-oriented data structure in imt-2000 system - Google Patents

Abstract

The present invention is to perform an inter-layer communication apparatus and method using an object-oriented data structure in the IMT-2000 system, and more particularly, to perform the inter-layer sub-layer communication method of the IMT-2000 system using an object-oriented data structure. The present invention relates to an inter-layer communication apparatus and method using an object-oriented data structure in an IMT-2000 system for reducing the overhead incurred during inter-layer communication. The present invention relates to an object-oriented data in an IMT-2000 system according to the present invention. According to the inter-layer communication apparatus and method using the structure, the method of performing the inter-layer sub-layer communication method in the layer-2 of the IMT-2000 system by using the object-oriented data structure to eliminate the overhead incurred during the inter-layer communication and At the same time, there is an outstanding effect of improving the system capacity and processing time.

Description

Inter-layer communication apparatus and method using object-oriented data structure in IMT-2000 system TECHNICAL FIELD

The present invention relates to an inter-layer communication apparatus and a method using an object-oriented data structure in the International Mobile Telecommunication (IMT) -2000 system, and more particularly, to the layer-2 of the IMT-2000 system. The present invention relates to an inter-layer communication apparatus and method using an object-oriented data structure in an IMT-2000 system for performing an inter-layer communication method using an object-oriented data structure to eliminate the overhead incurred during inter-layer communication. .

In the conventional PCS / DCS system, as shown in FIG. 1, an interlayer communication apparatus includes a memory 1, a link access control (LAC), a layer 2, and an RLP ( Radio Link Protocol (hereinafter referred to as RLP) layer 3, and MAC (Medium Access Control (hereinafter referred to as MAC)) layer 4.

However, the Master Data Packet stored in the memory 1 is not configured in a flexible object-oriented structure, but is a data area of the LAC layer 2, a data area of the RLP layer 3, and the MAC. The data area of the hierarchy 4 was fixedly allocated.

Accordingly, in the data communication between the layers 2, 3, and 4 described above, the LAC layer 2, the RLP layer 3, and the MAC layer 4 are themselves among the master data packets stored in the memory 1. We used the method of copying data only in the area of.

Therefore, the inter-layer communication apparatus in the conventional PCS / DCS (Personal Communication Service / Digital Communication Subsystem) system has to change the master data packet itself stored in memory when the data length of each layer is changed or when the layer is added / deleted. At the same time, there was a problem that the data transmission time was long and was not available.In addition, in a complex hierarchy such as the IMT-2000 system, there was a problem that it was impossible to use due to a waste of time or memory resources that may occur during data transfer between layers. .

Accordingly, the present invention has been made to solve the conventional problems as described above, and an object of the present invention is to eliminate the overhead between the sublayers in the layer-2 of the IMT-2000 system and to improve the capacity and processing time of the system. The present invention provides an interlayer communication apparatus and method using an object-oriented data structure in an IMT-2000 system.

In order to achieve the above object, the inter-layer communication apparatus using the object-oriented data structure in the IMT-2000 system includes a memory for storing a master data packet having an object-oriented data structure;

A LAC layer that opens a master data packet stored in the memory to write user data and transmits object information including a storage pointer of the user data to a lower layer;

Receives object information from the LAC layer, identifies a storage pointer of user data in the master data packet, writes wireless protocol data in a memory area before and after the user data, and then includes an object including the storage pointer of the protocol data. An RLP layer for transmitting information to a lower layer; And

Receives object information from the RLP layer and grasps the storage pointer of the radio protocol data in the master data packet, and at the same time writes incoming channel information in the front / rear area of the protocol data to complete the master data packet. It is characterized by.

In the inter-layer communication method using the object-oriented data structure in the IMT-2000 system of the present invention, a first step in which the LAC layer opens a master data packet stored in a memory and then writes user data in the center of the master data packet ;

Transmitting, by the LAC layer, object information including a storage pointer of the user data to the RLP layer;

A third step of acquiring a header pointer and a tail pointer of user data in the master data packet after the RLP layer receives the object information from the LAC layer;

A fourth step in which the RLP layer opens a master data packet stored in the memory and writes radio protocol data in an idle area before and after the user data is stored;

A fifth step of transmitting, by the RLP layer, object information including a storage pointer of the radio protocol data to the MAC layer;

A sixth step of identifying a header pointer and a tail pointer of radio protocol data in the master data packet after the MAC layer receives the object information from the RLP layer; And

And a seventh step in which the MAC layer opens the master data packet stored in the memory and writes incoming channel information in the idle area before and after the radio protocol data to complete the master data packet.

1 is a functional block diagram showing the configuration of an inter-layer communication apparatus used in a conventional PCS / DCS system,

FIG. 2 is a functional block diagram illustrating a configuration of a communication device between an LAC layer and a MAC layer within a layer-2 using an object-oriented data structure in an IMT-2000 system according to an embodiment of the present invention;

3 is an operation flowchart illustrating a communication method between an LAC layer and a MAC layer in layer-2 using an object-oriented data structure in the IMT-2000 system according to FIG. 2;

4A is a diagram illustrating object information in a second step S2 in a method of communicating between an LAC layer and a MAC layer within a layer-2 using an object-oriented data structure in the IMT-2000 system according to FIG. 3;

FIG. 4B is a diagram illustrating object information in a fifth step S5 in the method for communicating between an LAC layer and a MAC layer in a layer-2 using an object-oriented data structure in the IMT-2000 system according to FIG. 3.

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

100: memory 200: LAC layer

300: RLP layer 400: MAC layer

Hereinafter, an apparatus and a method for inter-layer communication using an object-oriented data structure in an IMT-2000 system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a functional block diagram of a communication device between an LAC layer and a MAC layer within a layer-2 using an object-oriented data structure in an IMT-2000 system according to an embodiment of the present invention. An apparatus for inter-Lac layer and MAC layer communication in Layer-2 using an object-oriented data structure in a -2000 system includes a memory 100, a LAC layer 200, an RLP layer 300, and a MAC layer 400. have.

The memory 100 is a memory that stores a master data packet having an object oriented data structure.

At this time, the maximum length of the master data packet stored in the memory 100 has "the maximum data length of the LAC layer + the maximum data length of the RLP layer + the maximum data length of the MAC layer".

In addition, the LAC layer 200 is a sublayer-1 that exists in layer-2 of the IMT-2000 system and performs a segmentation and reassembly (SAR) function of user data, and is master data stored in the memory 100. After opening the packet, the user data is written in the center thereof, and the object information 10 including the storage pointer of the user data as shown in FIG. 300).

Meanwhile, the RLP layer 300 exists in Layer-2 of the IMT-2000 system and simultaneously corrects an error of a wireless data link to provide a protocol for delivering reliable data to a higher layer. As sub-layer-2, receiving the object information 10 from the LAC layer 200, grasping the storage pointer of the user data in the master data packet, and writes wireless protocol data in the memory area before and after the user data. Thereafter, as shown in FIG. 4B, the object information 20 including the storage pointer of the protocol data is transmitted to the MAC layer 400 which is a lower layer.

In addition, the MAC layer 400 receives the object information 20 from the RLP layer 300, grasps a storage pointer of radio protocol data in the master data packet, and reaches the front / rear area of the protocol data. The channel information is written to complete the master data packet.

Then, in the following, the LAC layer and MAC in layer-2 using the object-oriented data structure in the IMT-2000 system according to an embodiment of the present invention using the inter-layer communication apparatus in the IMT-2000 system having the above configuration The communication method between layers will be described.

FIG. 3 is an operation flowchart illustrating a communication method between an LAC layer and a MAC layer in Layer-2 using an object-oriented data structure in the IMT-2000 system according to an embodiment of the present invention.

First, the LAC layer 200 opens a master data packet stored in the memory 100 and then writes user data in the center of the master data packet (S1).

Thereafter, the LAC layer 200 transmits the object information 10 including the storage pointer of the user data to the RLP layer 300 (S2). In this case, as shown in FIG. 4A, the object information 10 including the storage pointer of the user data described above includes the start pointer information 11 in which the initial pointer information of the master data packet is stored, and the master data packet. End pointer information 12 in which the last pointer information is stored, header pointer information 13 in which a header pointer of user data stored in the master data packet is stored, and tail pointer of user data stored in the master data packet. (Tail Pointer) is composed of stored tail pointer information 14.

Then, the RLP layer 300 receives the object information 20 including the storage pointer of the user data from the LAC layer 200 and grasps the header pointer and the tail pointer of the user data in the master data packet ( S3).

Subsequently, the RLP layer 300 opens a master data packet stored in the memory 100 and writes wireless protocol data in an idle area of the pre / post memory where the user data is stored (S4).

Thereafter, the RLP layer 300 transmits the object information 20 including the storage pointer of the radio protocol data to the MAC layer 400 (S5). In this case, as shown in FIG. 4B, the object information 20 including the storage pointer of the user data includes the start pointer information 21 in which the first pointer information of the master data packet is stored and the last pointer information of the master data packet. The stored end pointer information 22, the header pointer information 23 storing the header pointer of the radio protocol data stored in the master data packet, and the tail pointer information 24 storing the tail pointer of the radio protocol data stored in the master data packet. It is.

Then, the MAC layer 400 receives the object information 20 including the storage pointer of the radio protocol data from the RLP layer 300 and then uses the header pointer and the tail pointer of the radio protocol data in the master data packet. Figure out (S6).

Thereafter, the MAC layer 400 opens the master data packet stored in the memory 100 and writes incoming channel information in the idle area before and after the radio protocol data to complete the master data packet (S7).

Therefore, due to the flexibility of the master data packet stored in the memory 100 as described above, even if the data length of each layer is changed, it is possible to flexibly cope without changing the master data packet.

In addition, the present invention described above is applicable not only to Layer-2 in the IMT-2000 system but also to all layers in the mobile communication system.

As described above, according to the inter-layer communication apparatus and the method using the object-oriented data structure in the IMT-2000 system according to the present invention, the inter-layer sub-layer communication method of the IMT-2000 system uses an object-oriented data structure. By doing so, it is possible to remove the overhead incurred during inter-layer communication and to improve the capacity and processing time of the system.

Claims (5)

A memory for storing a master data packet having an object oriented data structure; A LAC layer that opens a master data packet stored in the memory to write user data and transmits object information including a storage pointer of the user data to a lower layer; Receives object information from the LAC layer, identifies a storage pointer of user data in the master data packet, writes wireless protocol data in a memory area before and after the user data, and then includes an object including the storage pointer of the protocol data. An RLP layer for transmitting information to a lower layer; And Receives object information from the RLP layer and grasps the storage pointer of the radio protocol data in the master data packet, and at the same time writes incoming channel information in the front / rear area of the protocol data to complete the master data packet. An interlayer communication apparatus using an object-oriented data structure in the IMT-2000 system. The method of claim 1, The maximum length of the master data packet stored in the memory is "maximum data length of LAC layer + maximum data length of RLP layer + maximum data length of MAC layer". Interlayer communication device used. The method of claim 1, The object information transmitted from the LAC layer to the RLP layer includes start pointer information of a master data packet, end pointer information of a master data packet, header pointer information of user data stored in a master data packet, and user data stored in a master data packet. The inter-layer communication apparatus using the object-oriented data structure in the IMT-2000 system, characterized in that consisting of tail pointer information. The method of claim 1, The object information transmitted by the RLP layer to the MAC layer includes start pointer information of a master data packet, end pointer information of a master data packet, header pointer information of radio protocol data stored in a master data packet, and radio stored in a master data packet. An inter-layer communication apparatus using an object-oriented data structure in an IMT-2000 system, characterized by tail pointer information of protocol data. A first step of the LAC layer opening the master data packet stored in the memory and writing the user data to the center of the master data packet; Transmitting, by the LAC layer, object information including a storage pointer of the user data to the RLP layer; A third step of acquiring a header pointer and a tail pointer of user data in the master data packet after the RLP layer receives the object information from the LAC layer; A fourth step in which the RLP layer opens a master data packet stored in the memory and writes radio protocol data in an idle area before and after the user data is stored; A fifth step of transmitting, by the RLP layer, object information including a storage pointer of the radio protocol data to the MAC layer; A sixth step of identifying a header pointer and a tail pointer of radio protocol data in the master data packet after the MAC layer receives the object information from the RLP layer; And An IMT-2000 system, wherein the MAC layer opens a master data packet stored in the memory and writes incoming channel information to an idle area before and after the radio protocol data to complete the master data packet. A Layered Communication Method Using Object-Oriented Data Structures in.