KR20040058428A - RNSAP having a resource managing function and controlling method therefore - Google Patents

Abstract

PURPOSE: A method for controlling a wireless network system having a resource management function and a control method thereof are provided to enable a DRNC(Drift Radio Network Controller) to inform an SRNC(Servicing RNC) of a resource state indicate message signal when sensing a failure alarm of a lower equipment during a handover process. CONSTITUTION: In an initial state(S1), a system processes a call signal requested by a terminal(S2). The system decides whether a handover process is currently performed in the terminal(S3). If so, an SRNC assigns a DCH(Dedicated Channel) resource to a DRNC so that the DRNC can keep managing a call of the terminal(S4). The SRNC decides whether a base station has a failure(S5). If so, the system generates a resource state message signal, and transmits the message signal to the SRNC(S6). The SRNC cancels the corresponding DCH resource of the DRNC in reference to the message signal(S7).

Description

RNSAP having a resource managing function and controlling method therefore}

The present invention relates to a wireless network system having a resource management function and a control method thereof. In particular, the resource management function of notifying the SRNC of a resource status indication message signal from a DRNC that detects a failure alarm of a lower device during handover is provided. A wireless network system and a control method thereof.

In general, a mobile communication system such as IMT-2000 allocates a call channel to a mobile communication terminal existing in its sector to process a call. In this case, the mobile communication terminal is a base station to which a communication channel is allocated during a call. Frequent occurrences move away from other base stations to cells or other sectors under their control. Accordingly, the adjacent base station performs a function of allocating a new channel instead of the radio frequency channel in use so that the call can be maintained, that is, handover or handoff function.

Then, referring to FIG. 1, the IMT-2000 system having the conventional handover function as described above is connected to a plurality of base stations 70A-N at the bottom to allocate and release call channels required by the terminal 71. Serving radio network controller (SRNC) 72 and the mobile station 71 moved into its sector base station 70G at the time of headover with reference to the dedicated channel resource transmitted from the SRNC 72. It includes a DRNC (Drift Radio Network Controller) managed by.

Here, a plurality of cells 74 partitioned into a predetermined area are formed in the plurality of base stations 70A-N.

On the other hand, looking at the handover method of the conventional mobile communication system as described above, first, when the terminal 71 in a certain position emits a call request signal for the call required by the call request signal is a jurisdiction to the area concerned; Reported to SRNC 72 through the cell of base station 70F. At this time, the SRNC 72 manages the call channel of the base station 70F to which the corresponding terminal 71 is connected. Here, if the terminal 71 is handed over to the base station 70G controlled by another RNC 73, that is, between IURs by a measurement report (addition) transmitted from the corresponding terminal 71 in the SRNC 72, Connect the connection between the RNCs that take over and take over the handover. At this time, the SRNC 72 allocates the DCH Resourec to the DRNC 73 through the RADIO LINK SETUP REQUEST message and then handovers the corresponding terminal 71 to process the call by the connected base station 70G.

However, the handover method of the conventional mobile communication system as described above is performed by the base station 70G that is in charge of the DRNC 73, that is, Node-B in the state of handover to the DRNC 73 handed over from the SRNC 72. If there is no message function to report to SRNC (2) that manages all these call processing process in case of detach / mounting or CELL is blocked, the corresponding resource of DRNC (73) cannot be released and waste of resources Even if the corresponding terminal 71 releases a measurement report (deletion) and releases the DRNC DCH resource through the RADIO LINK DELETION REQUEST message from the SRNC 72 to the DRNC 73, this method takes a lot of time. It is not only efficient in terms of signal processing but also causes many problems in use.

Accordingly, the present invention has been invented to solve the above-mentioned conventional problems, and since the SRNC can release unnecessary resources of the DRNC with reference to the message signal notified from the DRNC, thereby significantly improving the efficiency of resource management of the DRNC. It is an object of the present invention to provide a wireless network system having a resource management function and a control method thereof.

Another object of the present invention is that the DRNC notifies the SRNC immediately after detecting a failure alarm and reallocates resources. Accordingly, a wireless network system having a resource management function and a method of controlling the radio network system are significantly improved. To provide.

In order to achieve the above object, the present invention manages allocation and release of a call channel required by a terminal, including during handover, and an SRNC for transmitting a DCH release control signal according to a resource status indication signal, and transmitting from the SRNC. A wireless network system having a resource management function comprising a DRNC that manages a terminal moved into its sector base station at the time of a headover with reference to the received DCH resource, and generates a resource status indication signal when a failure of a lower base station occurs and notifies the corresponding SRNC; It provides a control method.

Another feature of the present invention is the SRNC resource management step of continuously managing the call of the currently connected terminal by the SRNC allocates DCH resources to the currently handed over DRNC when the handover occurs in the wireless network system, and the SRNC After the resource management step, the DRNC detects whether a failure has occurred in a base station under its control, and if the failure occurs in the base station under control of the DRNC during the DRNC failure detection check step, the DRNC fails. A DRNC failure reporting step of generating a resource status message signal capable of knowing occurrence information and transmitting the same to a SRNC, and after the DRNC failure reporting step, releases a corresponding DCH resource of the DRNC by referring to a resource status message signal received from the DRNC by the SRNC. It provides a control method of a wireless network system having a resource management function consisting of SRNC release step.

1 is an explanatory diagram illustrating a conventional wireless network system.

2 is an explanatory diagram illustrating a wireless network system of the present invention.

3 is a flowchart of the present invention.

4 is an explanatory diagram for explaining an example of a resource status indication message of the present invention;

<Detailed Description of Codes>

1: terminal 2: SRNC

3A-N: base station 4: DRNC

5: cell

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

As shown in FIG. 2, the present invention manages allocation and release of a call channel required by the terminal 1, including a handover, and transmits a DCH release control signal according to a RESOURCE STATUS INDICATION signal. The SRNC 2 and the terminal 1 moved to its sector base station 3A-N at the time of the headover with reference to the DCH resource transmitted from the SRNC 2 and continue to manage the resource state in case of failure of the lower base station. And a DRNC 4 for generating an indication signal and informing the corresponding SRNC 2.

Here, a plurality of cells 5 partitioned into a predetermined area are formed in the plurality of base stations 3A-N.

Next, the resource management method of the present invention as described above will be described.

The method of the present invention proceeds to the call channel processing execution step (S2) in the initial state (S1) as shown in Figure 3 to process the call signal requested from the terminal. After the call channel processing execution step S2, the process proceeds to the handover determination step S3 to determine whether a handover has occurred in the current terminal. At this time, if the handover has not occurred in the current terminal as a result of the determination in the handover determination step (S3), the process returns to the previous step (S2) and repeats the loop.

However, if the handover occurs in the current terminal as a result of the determination during the handover determination step (S3), proceeds to the resource management step (S4) of the SRNC and the SRNC allocates the DCH resource to the currently handed over DRNC to the currently connected terminal. Continue to manage the call. However, after the resource management step (S4) of the SRNC proceeds to the failure detection detection step (S5), the DRNC determines whether a failure, for example, the removal / mounting of the base station and the CELL block in the base station under its control. At this time, when a failure occurs in the base station under the control of the DRNC judging during the failure detection determination step (S5), it returns to the previous step (S4) and repeats the loop.

However, if the failure occurs in the base station controlled by the DRNC as a result of the failure detection determination step (S5), proceeds to the failure reporting step (S6), the DRNC generates a resource status message signal to know the failure information SRNC To send. Then, after the failure reporting step (S6) proceeds to the SRNC release step (S7) and SRNC releases the corresponding DCH resources of the DRNC with reference to the resource status message signal received from the DRNC.

In other words, when the terminal 1 at a certain position emits a call request signal for a call required by the terminal 1, the call request signal is reported to the SRNC 2 through the cell of the base station 3F which is in charge of the corresponding area. . At this time, the SRNC 2 manages the call channel of the base station 3F to which the corresponding terminal 1 is connected. Here, if the terminal 1 is handed over to a base station 3G controlled by another RNC, the SRNC 2 performs handover, that is, handover between IURs by a measurement report (addition) transmitted from the corresponding terminal 1. Connect the connection between the takeover and receiving RNCs. At this time, the SRNC 2 allocates the DCH Resourec to the DRNC 4 through the RADIO LINK SETUP REQUEST message and then handovers the terminal 1 to process the call by the connected base station 3G.

Here, in the process, if there is a base station in which the failure occurs among the base stations 3A-N controlled by the DRNC 4, for example, if the base station is demounted / mounted or the CELL is blocked, the failure is the corresponding DRNC ( 4) is reported. Then, unlike the conventional method, the DRNC 4 generates a connectionless RADIO RESOURCE INDICATOR message as shown in FIG. 4 and notifies the SRNC 2 of the fact of the failure. Then, the SRNC 2 refers to the resource status indication message signal notified from the DRNC 4, for example, ACTIVE SET UPDATE message of Deletion for immediate release to the corresponding terminal 1 by referring to item information such as RL Information. In addition to this, a RADIO LINK DELETION REQUEST Message signal is transmitted to the DRNC (4) to release the DCH resources of the DRNC (4) to prevent unnecessary resource waste.

As described above, the present invention informs the SRNC of the resource status indication message signal in the DRNC that detects the failure alarm of the underlying equipment during handover, so that the SRNC releases unnecessary resources of the DRNC by referring to the received message signal. As a result, the DRNC has an advantage of significantly improving the efficiency of resource management.

In addition, according to the present invention, since the DRNC notifies the SRNC as soon as it detects the failure alarm and reallocates resources, the processing function of the wireless network system is also significantly improved.

Claims (2)

SRNC which manages allocation and release of call channel requested by UE including handover and transmits DCH release control signal according to resource status indication signal, and its sector upon headover with reference to DCH resource transmitted from SRNC. A wireless network system having a resource management function, comprising: a DRNC for managing a terminal moved into a base station and generating a resource status indication signal when a failure of a lower base station occurs and notifying the corresponding SRNC. When a handover occurs in a wireless network system, the SRNC allocates DCH resources to the currently handed-over DRNC to continue managing the call of the currently connected terminal, and after the SRNC manages the resource, DRNC failure detection check step to check whether the failure occurs in the base station that has jurisdiction, DRNC can check the failure information when it is confirmed that the failure occurs in the base station controlled by the DRNC during the DRNC failure detection check step DRNC failure reporting step of generating a resource status message signal and transmitting it to the SRNC, SRNC release step of releasing the corresponding DCH resources of the DRNC with reference to the resource status message signal received by the SRNC from the DRNC after the DRNC failure reporting step. A method of controlling a wireless network system having a resource management function.