KR20070056365A - Protocol structure for mobile communication system - Google Patents

Abstract

A communication system using a protocol structure is provided to design a protocol and reduce time for signal-processing by forming the protocol with a mixed structure of vertical and horizontal structures. A communication system using a protocol structure includes a first layer(31), a second layer(32), and a third layer(33). The first to third layers(31,32,33) of a protocol form a vertical structure. A sub layer of the third layer(33) is formed in a mixed structure of vertical and horizontal structures. The third layer(33) includes RR(Radio Resource management), MM(Mobility management), and CM(Connection management) sub layers(33a,33b,33c). Each of the RR and MM sub layers is designed in an independent horizontal structure. The CM sub layer is designed in a vertical structure with respect to the RR and MM sub layers. The CM sub layer is an upper layer of the RR and MM sub layers, and controls the RR and MM sub layers.

Description

Protocol structure for mobile communication system

1 is a block diagram illustrating a protocol structure of a mobile communication system according to the related art;

2 is a configuration diagram showing another example of a protocol structure of a mobile communication system according to the related art;

3 is a block diagram showing the configuration of a mobile communication system according to the present invention;

4 is a diagram illustrating a protocol structure of a mobile communication system according to the present invention.

<Explanation of symbols on main parts of the drawings>

31: L1, first layer 32: L2, second layer

33: L3, third layer 33a: CM layer

33b: MM layer 33c: RR layer

Auc: Certification Center

BTS: Base Station BSC: Base Station Control

HLR: Location Register MS: Mobile Terminal

MSC: Exchange VLR: Visitor Location Register

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protocol structure of a mobile communication system. In particular, a protocol of a mobile communication system improves efficiency by removing unnecessary connections by changing a protocol structure of a mobile communication system and improving an interface between layers to reduce processing time. It's about structure.

In general, depending on the mobile communication method used for signal processing and transmission of the mobile communication network. It is divided into CDMA, GSM, and the like, and a protocol for transmitting data according to each communication method is provided.

Referring to the drawings the protocol structure of a mobile communication system according to the related art is as follows. 1 is a diagram illustrating a protocol structure of a mobile communication system according to the related art, and FIG. 2 is a diagram illustrating another example of a protocol structure of a mobile communication system according to the related art.

As shown in FIG. 1, the protocol structure of a mobile communication system according to the related art is composed of first layers L1 and 11, second layers L2 and 12, and third layers L3 and 13, respectively. The hierarchy has a vertical hierarchy.

In particular, the third layer (L3, 13) is a sub-layer includes a radio resource management (RR) 13a, MM (Mobility management, 13b), CM (Connection management, 13c).

In this case, the third layer (L3, 13) is the sub-layer RR (13a) is designed as the lowest layer of the three sub-layers, and the CM (13c) is designed as the highest layer to the three sub-layer RR (13a) ), The MM 13b and the CM 13c have a vertical hierarchical structure.

At this time, the third layer is a sub-layer MM (13b) and the sub-layer RR (13a) while performing independent work, regardless of what is performed, the upper layer of the data of the second layer 12 or lower sub-layer Since it has to be delivered to, there is a problem that the load is increased accordingly.

In particular, the RR 13a, which is the lowest sublayer of the third layer L3, must transmit a signal irrelevant to the work performed between the second layers L2 and 12 and the sublayer MM 13b. The load is weighted.

As another example of a mobile communication system according to the related art, as illustrated in FIG. 2, in the protocol structure of the mobile communication system, the first to third layers L1 to L3 and 21 to 23 have a vertical structure. .

In this case, the CM, MM, RR (23a, 23b, 23c) of the sub-layers of the third layer (L3, 23) may be designed in an equal horizontal structure, respectively.

However, the third layer (L3, 23) has a completely horizontal structure of the sub-layers RR, MM, CM (23a, 23b, 23c), so that unnecessary signaling between the sub-layers is controlled, while the sub-layer In the case of a CC (not shown) stage included in the CM 23c and involved in call processing, the interface with the sub-layer MM 23b or the RR 23a is lost, which may cause a problem when the actual call is established. .

As described above, in the mobile communication system according to the present invention, since the sub-layer of the third layer (L3) is designed in a vertical structure or a horizontal structure, the load is increased due to unnecessary signal transmission or the absence of an interface required for signal processing, in particular, There is a problem that an error may occur during call processing.

The present invention has been made to solve the above problems of the prior art, by designing a hierarchical structure of the protocol of the mobile communication system in a mixed structure of vertical and horizontal structure to eliminate unnecessary interfaces and improve the efficiency of signal processing The purpose is to provide a protocol structure of a mobile communication system.

The protocol structure of the mobile communication system according to the present invention for solving the above problems is, in the mobile communication system, the first to third layers of the protocol form a vertical structure, the sub-layer of the third layer and the vertical structure Characterized in that it consists of a mixed type of water piece structure.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. 3 is a block diagram showing the configuration of a mobile communication system according to the present invention, Figure 4 is a block diagram showing a protocol structure of a mobile communication system according to the present invention.

As shown in FIG. 3, the mobile communication system according to the present invention includes a mobile communication terminal (MS), a base station (BTS) for transmitting and receiving signals with the mobile communication terminal, and a base station controller (BSC) for centrally controlling one or more base stations. And a switching center (MSC) for signal exchange between one or more mobile communication terminals.

In addition, the mobile communication system is an authentication center for the exchange to perform the authentication for the location registration unit (HLR), the visitor location registration unit (VLR) and the mobile communication terminal for determining the location information for the one or more mobile communication terminal It is configured to include (AuC), and is also connected to a wired telephone network to enable the transmission and reception of signals between a mobile communication network and a wired telephone network (PSTN).

Here, the mobile communication terminal and the mobile communication system are provided with a protocol for signal processing according to the transmission or reception of the call, and the call or message transmission is possible by transmitting and receiving the signal according to the defined protocol, respectively.

Here, the protocol structure of the mobile communication system is as shown in FIG.

The protocol structure of the mobile communication system includes a first layer (L1, 31), a second layer (L2, 32), and a third layer (L3, 33), which is a radio interface layer, each layer is It has a vertical structure.

In this case, the third layer is configured to include a sub-layer of RR (Radio Resource management, 33a), MM (Mobility management, 33b), CM (Connection management, 33c), each sub-layer performs an independent role do.

The sublayer RR 33a is a layer for managing radio resources, the sublayer MM 33b is a mobile management layer, and the sublayer CM 33c is a layer for managing access.

In this case, the sub-layer CM 33c supports signaling for call processing in addition to an additional service and a short message service (SMS). In addition, the sub-layer MM (33b) supports the signaling necessary for encryption key management, authentication and navigation of the mobile terminal.

In addition, the sub-layer RR 33a performs signaling to support a routing service, a service request, a message transmission, a change (handover) of a call channel, a mode setting for a channel, a parameter management, and the like in a call mode.

Here, three layers of the third layer, RR 33a, MM 33b, and CM 33c, have a structure in which a horizontal structure and a vertical structure are mixed.

That is, the sub-layer RR 33a is connected to the lower second layer 32 by belonging to the third layer 33, which is an upper layer of the second layer 32, from the second layer 32. It receives and processes the data and delivers it to the upper level.

In addition, the sublayer MM 33b is connected to the second layer 32 separately from the sublayer RR 33a to receive and process a signal.

At this time, the sub-layer RR (33a) and the sub-layer MM (33b) is designed in a mutually horizontal structure.

Further, the sublayer CM 33c is designed as an upper layer connected as a vertical structure with respect to the sublayer RR 33a and the sublayer MM 33b, so that the sublayer MM 33b or RR 33a is designed. ), And the sub-layer MM 33b and the sub-layer RR 33b are controlled.

That is, the third layer 33 separates the sub-layer MM 33b and the sub-layer RR 33a, which are operated independently from each other, and is designed in a horizontal structure so that the connection is removed so that signal transmission between them is not achieved.

In addition, the third layer 33 is designed such that the sub-layer CM 33c has a vertical structure with respect to the sub-layer MM 33b and the sub-layer RR 33a as described above. When the call processing is performed, the sub-layer MM 33b or the sub-layer RR 33a can be independently controlled by the sub-layer CM 33c.

Accordingly, the sub-layer MM 33b controls the location information of the mobile communication terminal (MS) that is actually processed or the portion related to the mobile communication terminal subscriber information and the connection of the sub-layer MM 33b, and the sub-layer RR (33a) By having a horizontal structure with, it is not involved in signals that are not related to the work being performed.

In addition, the sub-layer RR 33a controls the frequency, the channel to be actually processed, and the part related to the connection to the sub-layer RR 33a. In this case, the sub-layer RR 33a is connected to the second layer 32 and the sub-layer MM 33b in the conventional hierarchical structure to remove the interface for transmitting a signal, thereby reducing the load due to signal transmission.

As described above, the protocol structure of the mobile communication system according to the present invention has been described with reference to the illustrated drawings. However, the present invention is not limited by the embodiments and drawings disclosed herein, and may be applied within the scope of the technical idea. Can be.

In the protocol structure of the mobile communication system according to the present invention configured as described above, the sublayer RR, MM, and CM of the third layer are configured in a mixture of a vertical structure and a horizontal structure. The unnecessary signal processing between the MM and the MM is eliminated, and the sub-layer CM is designed to have a vertical structure with respect to the sub-layers RR and MM to facilitate control of the sub-layers RR and MM during call processing. It is easy, and the time required for signal processing of the mobile communication system is greatly reduced, and unnecessary signal processing is reduced as described above, thereby effectively improving efficiency.

Claims (6)

In the mobile communication system, The first to third layers of the protocol form a vertical structure, The protocol layer of the mobile communication system, characterized in that the sub-layer of the third layer is composed of a mixture of a vertical structure and a horizontal structure. The method of claim 1, The third layer is configured to include sub-layers of radio resource management (RR), mobility management (MM), and connection management (CM). The sub-layer RR and the sub-layer MM is a protocol structure of a mobile communication system, characterized in that each is designed in a horizontal structure independent of each other. The method of claim 2, The third layer is a protocol structure of a mobile communication system, characterized in that the sub-layer CM (connection management) is designed in a vertical structure with respect to the sub-layer RR and the sub-layer MM. The method of claim 3, wherein The sublayer CM is an upper layer of the sublayer RR and the sublayer MM, and the protocol structure of the mobile communication system, characterized in that for controlling the sublayer RR and the sublayer MM. The method of claim 3, wherein The sub-layer RR is connected to the upper layer of the second layer, the protocol structure of the mobile communication system, characterized in that connected to the lower layer. The method of claim 3, wherein The sublayer MM is connected to the second layer separately from the sublayer RR and the protocol structure of a mobile communication system, characterized in that connected to the lower layer of the sublayer CM.

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