KR19980079325A - Cell configuration test method in wireless communication system - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

Cell configuration test method in wireless communication system

I. The technical problem that the invention is trying to solve

To improve the service quality in a wireless communication system, a method of designing a cell most suitable for a service area is provided.

All. Summary of the Solution of the Invention

The jig module controls incoming, outgoing, location registration, handover, etc., so that the mobile terminal is connected to the control unit of the wireless base station and operates as if receiving online service, thereby checking the call quality and microcells in the region with the best call quality. Configure

la. Important uses of the invention

The quality of service can be improved in the wireless communication system.

Description

Cell configuration test method in wireless communication system

The present invention relates to a method for testing a micro cell in a wireless communication system, and more particularly, to a method for testing a configuration of a cell in a wireless communication system.

Typically, a wireless communication system is configured to install a wireless base station connected by wire to a place remotely located from a wireless switchboard, and to make freely making and incoming calls using a wireless terminal within a predetermined distance from the wireless base station.

1 is a view showing a schematic configuration of a wireless communication system to which the present invention is applied, and shows a configuration of a wireless communication system using a microcell (radius of 200 meters or less) concept. Inside the private switch 110 connected to the Public Switched Telephone Network (PSTN) 100, a wireless base station controller (Controller of CFP: shown as CCFP in the figure) 120 is included. The wireless base station controller 120 is wired to a wireless base station (Cordless Fixed Part (shown as CFP in the drawing)) 150, 160 located inside each of the micro cells 130 and 140. The micro cells 130 and 140 have some common area and can perform handover adjacent to each other.

Referring to FIG. 1, a schematic operation of a wireless communication system to which the present invention is applied will be described. The radio base station controller 120 controls all radio base stations 150 and 160 to switch and connect calls. The radio base station 150, 160 establishes a radio link with the radio terminals 171, 172, 173, 174 in the corresponding microcells 130, 140, and transmits voice and various control information. Cordless Portable Parts (CPPs) 171, 172, 173, and 174 are portable terminals in which subscribers can make calls through a wireless link established with wireless base stations 150 and 160 in the corresponding microcells 130 and 140. For example, after the radio terminal 172 establishes a radio link with the radio base station 150 in the micro cell 130, when the radio terminal 172 attempts to leave the micro cell 130, the radio sensitivity is weakened so that the radio link is disconnected and the call is dropped. As described above, when the wireless terminal 172 leaves the micro cell 130, the wireless link is broken and the call is disconnected. In order to provide mobility of the wireless communication, the wireless communication system has a handover function. When the subscriber having the wireless terminal 172 tries to leave the corresponding micro cell 130, the wireless base station 150 recognizes this by detecting the wireless field strength at that time, and requests a handover to the wireless base station controller 120. The radio base station control apparatus 120 requests the radio base station 150 to accept the handover in response to the handover request. As such, the radio base station controller 120 requires the handover to be accepted by the radio base stations in all cells to be released. The request establishes a link with the radio base station in the cell closest to the radio terminal 172 to continue the call. For example, if the wireless terminal 172 has moved to the cell 140, the link with the wireless base station 160 is reestablished and the call can be continued accordingly.

As described above, the wireless communication system tracks the location of the incoming call, the wireless terminal as well as the call, and provides services such as handover. In order to provide the service most efficiently and to provide good quality service, it is important to configure a micro cell that is best suited for the service area as well as its own performance of the radio terminal, the radio base station, and the radio base station controllers.

Conventionally, a method for constructing a micro cell suitable for providing a high quality call service measures the radio field strength according to the position of a radio base station and a radio terminal in a predetermined micro cell. In the conventional method for inspecting the micro cell configuration, a cell simulator or RF equipment is placed in a radio base station and a radio terminal to measure radio field strength. The conventional method for checking the micro cell configuration using the cell simulator is often not a proper simulator program in the wireless communication protocol, even if there is a simulator program is expensive. In addition, the conventional method for inspecting the micro cell configuration using a cell simulator can predict the micro cell configuration, but there is a different problem from the actual situation. On the other hand, when testing the micro cell configuration by measuring the radio field strength using the RF equipment, there is a problem that a lot of manpower and time is consumed to measure the micro cell configuration because the RF equipment is heavy and difficult to move. . In addition, the method of measuring the micro-cell configuration using the RF equipment is a hassle of finally having to install a real radio base station and perform a cell configuration test because all RF characteristics of the actually installed base station are slightly different. have.

Accordingly, an object of the present invention is to provide a method for testing a cell configuration in a wireless communication system.

Another object of the present invention is to provide a method for controlling a call service for testing a micro cell at a radio base station.

Another object of the present invention is to provide a method for constructing a micro cell for improving call quality in a wireless communication system.

The present invention for achieving the above object is the process of selecting the on-line mode and jig mode in the wireless communication system constituting the micro-cell, performing the incoming and outgoing function of the radio base station in the jig mode, the wireless in the jig mode Characterized in that the process of inspecting the configuration of the micro cell of the base station.

In addition, the present invention is equipped with a jig program module to handle the origination, incoming, handover, etc. in the wireless base station, and when operating in the jig mode by switching the voice channel of each port inside to test the micro-cell configuration, the best call quality It is characterized by constituting this excellent microcell.

1 is a view showing a schematic configuration of a wireless communication system to which the present invention is applied.

2 is a view showing the configuration of a micro cell configuration test apparatus according to an embodiment of the present invention.

3 is a view showing a signal flow in the cell configuration test apparatus of the wireless communication system according to the embodiment of the present invention shown in FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a diagram illustrating a configuration of an apparatus for testing a configuration of a micro cell in a wireless communication system according to an exemplary embodiment of the present invention.

The micro cell is a cell 130 shown in FIG. 1 and includes a wireless base station 150, a power supply charging device 201 for a wireless base station, a monitor terminal 202 for a wireless base station, and a wireless terminal 171,172. The tripod 203 is installed so that the radio base station 150 is located at a desired height as shown in FIG.

FIG. 3 is a diagram illustrating a signal flow in the cell configuration test apparatus of the wireless communication system shown in FIG. 2, and illustrates a signal flow between the radio base station controller 120, the radio base station 150, and the radio terminal 171. The jig module of the wireless base station 150 according to an embodiment of the present invention processes the received message and transmits a response message to the wireless terminal 171. The abbreviations shown in FIG. 3 are as follows. SLI1 / 3 is Single Line Layer_1 / 2/3 Interface, SLI is Single Line Interface, CL1 / 2/3 is Cordless Line Layer_1 / 2/3 Interface.

A method of configuring a micro cell according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. The wireless base station 150 performs a jig module program for testing incoming, outgoing, handover, and location registration while moving the wireless terminals 171 and 172 to a desired area. The jig module for inspecting the configuration of the microcell according to the embodiment of the present invention may intercept all layer3 messages transmitted and manipulate the messages. That is, the jig module enables function tests such as incoming, outgoing, handover, and location registration without control by the radio base station controller 120.

When the wireless base station controller 120 and the wireless base station 150 are connected by wire, the jig module does not operate since the online service is performed. The process of transmitting a message from the wireless terminal 150 to the wireless base station controller 120 is as follows.

CL3 of wireless terminal 171 → CL2 of wireless terminal 171 → CL1 of wireless terminal 171 → Transmission medium (air) → CL1 of wireless base station 150 → CL2 of wireless base station 150 → CL3 of wireless base station 150 → SL3 of wireless base station 150 → Wireless base station 150 SL2 → radio base station SL1 → transmission medium (transmission path) → SL1 of radio base station control device 120 → SL1 of radio base station control device 120 → SL2 of radio base station control device 120 → SL3 of radio base station control device 120 → call service module of radio base station control device 120

Meanwhile, the path of the message transmitted from the radio base station controller 120 to the radio terminal 171 is as follows.

Call service module of wireless base station controller 120 → SL3 of wireless base station controller 120 → SL2 of wireless base station controller 120 → SL1 of wireless base station controller 120 → transmission medium (transmission path) → SL1 of wireless base station 150 → wireless base station 150 → SL3 of the radio base station 150 → CL3 of the radio base station 150 → CL2 of the radio base station 150 → CL1 of the radio base station 150 → Transmission medium (air) → CL1 of the radio terminal 171 → CL2 of the radio terminal 171 → CL3 of the radio terminal 171

In contrast, when the jig module for measuring the configuration of the microcell according to the embodiment of the present invention is operated, there is no message transmission between the radio base station controller 120 and the radio base station 150. The flow of messages transmitted from the wireless terminal 171 to the jig module of the wireless base station 150 in the jig mode for measuring the configuration of the micro cell according to the embodiment of the present invention is as follows.

CL3 of wireless terminal 171 → CL2 of wireless terminal 171 → CL1 of wireless terminal 171 → Transmission medium (air) → CL1 of wireless base station 150 → CL2 of wireless base station 150 → CL3 of wireless base station 150 → SL3 of wireless base station 150 → Wireless base station 150 jig modules

Meanwhile, the flow of messages transmitted from the jig module of the wireless base station 150 to the wireless terminal 171 is as follows.

Jig module of wireless base station 150 → SL3 of wireless base station 150 → SL2 of wireless base station 150 → SL1 of wireless base station 150 → Transmission medium → air → CL1 of wireless terminal 171 → CL2 of wireless terminal 171 → CL3 of wireless terminal 171

The jig module of the wireless base station 150 according to an embodiment of the present invention can control all layer3 messages such as incoming, outgoing, location registration, handover, etc. through the message transmission process, and thus is not connected to the wireless base station controller 120. It provides such basic online service.

That is, the jig module of the radio base station according to the embodiment of the present invention can perform the cell configuration test efficiently by performing the radio terminal registration function, call authentication function, call function, handover message processing and supervisor function.

As described above, the present invention can design a wireless cell having excellent call quality by performing a cell configuration test through a registration function, a call authentication function, a call function, and a handover message processing function of a mobile terminal in a wireless communication system.

Claims (5)

A wireless terminal establishes a wireless link with a wireless base station, and transmits and receives voice and data through the wireless link, forms a wireless link with the wireless terminal, and is connected to a switch by wire to provide various information of the wireless terminal and the exchange period. A method for testing a cell configuration in a wireless communication system having a wireless base station for transmitting, Selecting an on-line mode in which the wireless terminal and the switch are connected and a jig mode in which only a wireless link between the wireless terminal and the wireless base station is formed; Switching between an online module and a jig module in the jig mode; And testing a configuration of a radio cell by performing a call service between the radio base station and the radio terminal period in the jig mode. The method of claim 1, When the on-line mode is selected in the jig mode, disabling a jig module function and enabling the disabled online module. The method of claim 1, While the jig module is operating, no message is transmitted in the wired section of the exchange with the radio base station, And testing a cell configuration in a wireless communication system, wherein the call processing message itself is handled between the radio base stations. The method of claim 1, The jig module controls call processing messages such as incoming, outgoing, location registration, and handover to test cell configuration in a wireless communication system, which operates as if the wireless base station and the exchange are connected to receive an online service. Way. The method of claim 1, And using the result of testing the configuration of the radio cell, designing a radio cell most suitable for a service area.