KR20080097888A - Resource allocation method and system in communication system - Google Patents

Abstract

According to an aspect of the present invention, there is provided a method of allocating a resource of a call controller in a communication system, the method comprising: receiving resource consumption state information indicating resource consumption according to frequency allocation (FA) from respective base stations in a call group, and operating in an idle mode; Performing a location update of the mobile terminal to identify the call group in which the mobile terminal is located; and according to the resource consumption state information of each base station of each base station in the call group in which the mobile terminal is located, the resource consumption of the mobile terminal is lowest. The process of assigning an FA is included.

Description

METHOD AND SYSTEM FOR ALLOCATING RESOURCE IN A COMMUNICATION SYSTEM}

1 is a signal flow diagram schematically illustrating a process in which an MS operating in an idle mode is allocated resources by performing its location update;

FIG. 2 is a flowchart schematically illustrating a process in which an MS operating in an idle mode is allocated resources by performing its location update;

3 is a flowchart schematically illustrating a process of allocating resources by performing a location update of an MS operating in an idle mode in FIG.

4 is a signal flowchart schematically illustrating a process in which an MS operating in an idle mode is allocated a resource by performing a location update according to an embodiment of the present invention;

5 is a signal flow diagram schematically illustrating a process in which an MS operating in an idle mode according to an embodiment of the present invention performs resource location update according to a location update condition newly proposed by the present invention and allocates resources.

FIG. 6 is a flowchart schematically illustrating a process in which an MS operating in an idle mode is allocated a resource by performing its location update according to an embodiment of the present invention; FIG.

7 is a flowchart schematically illustrating a process of allocating resources by performing a location update of an MS operating in an idle mode according to an embodiment of the present invention.

The present invention relates to a method and system for allocating resources to a mobile station (MS) which operates in idle mode in a communication system.

The next generation communication system is evolving into a mobile communication system for providing services capable of high-speed, high-capacity data transmission and reception to MSs. A representative example of such a next generation communication system is the Institute of Electrical and Electronics Engineers (IEEE) 802.16 communication system.

The IEEE 802.16 communication system supports two types of operation modes for the MS: awake mode and idle mode. The MS operating in the awake mode is connected to a base station (BS: hereinafter referred to as 'BS') to transmit and receive traffic, and when there is no traffic to transmit and receive for a predetermined time, the MS transitions to the idle mode.

Meanwhile, the MS operating in the idle mode does not transmit or receive traffic at all, measures the signal strength of a downlink preamble signal transmitted from neighbor BSs, and broadcasts from the neighbor BSs. Minimize power consumption by receiving only system information and paging messages. In addition, the MS operating in the idle mode moves freely within the system and updates its current location so that the system can determine its location. The conditions for the MS to perform the location update include paging group update, timer update, power down update, and medium access control (MAC). There is a hash skip threshold update.

Now, the call group will be described.

The call group includes at least one BS, where the location of the MS operating in idle mode is managed in units of the call group. In addition, each of the call groups is identified using a call group identifier (ID) (hereinafter, referred to as 'ID'), and each of the BSs shares the call group ID value of the BSs with their own system information. Broadcast every frame. Therefore, when the MS enters a new call group out of the current call group, the MS receives a call group ID from the corresponding BS of the new call group. Then, the call group ID value received from the corresponding BS of the new call group and the call group ID value received and stored from the previous serving BS are different so that the MS identifies that the new call group has entered the new call group. .

Next, a process in which the MS operating in the idle mode performs location update and allocates resources corresponding to the above location update conditions will be described with reference to FIG. 1.

FIG. 1 is a signal flow diagram schematically illustrating a process in which an MS operating in an idle mode performs resource allocation by performing an update of its location.

Referring to FIG. 1, when the MS 101 satisfies at least one of the above-described location update conditions, a location update request (LU_REQ: Location Update Request, hereinafter called 'LU_REQ') is requested. Message is transmitted to the BS 103 (step 107). Upon receiving the LU_REQ message from the MS 101, the BS 103 transmits the LU_REQ message to a paging controller 105 that manages a call group (step 109). The LU_REQ message includes the MAC address of the MS 101 requesting the location update and the call group ID of the serving BS to which the MS 101 belongs before sending the LU_REQ message.

On the other hand, the call controller 105 receiving the LU_REQ message performs the location update of the MS 101 with reference to the MAC address and call group ID included in the LU_REQ message and calls the MS 101 is located. After confirming the group, a location update response (LU_RSP) message, which is a response message to the LU_REQ message, is transmitted to the BS 103 (step 111). Upon receiving the LU_RSP message from the call controller 105, the BS 103 transmits the LU_RSP message to the MS 101 (step 113).

At this time, the call controller 105 allocates a call group ID, a call cycle, and a call offset parameter to the MS 101 through the LU_RSP message. Here, the call period parameter is a parameter determined by the system with reference to the call period requested by the MS, and the call offset parameter is used to determine when the system can call a specific MS using the frame number and the call period of the BS. Is a parameter.

 Meanwhile, the BS 103 transmits a location update confirmation message (LU_Confirm: LU_Confirm) to indicate that it has transmitted the LU_RSP message to the MS 101 (step 113). 105) (step 115). Next, referring to FIG. 2, a process in which an MS operating in an idle mode is allocated a resource by performing its location update corresponding to the above location update conditions will be described.

FIG. 2 is a flowchart schematically illustrating a process in which an MS operating in an idle mode is allocated resources by performing its location update.

Referring to FIG. 2, first, in step 201, the MS checks whether at least one of the conditions for performing the location update is satisfied. As a result of the check in step 201, if at least one of the location update conditions is satisfied, step 203 is performed. In step 203, the MS sends an LU_REQ message requesting its location update to the call controller and proceeds to step 205.

In step 205, the MS receives an LU_RSP message, which is a response message to the LU_REQ message, from the call controller and receives a call group ID, a call period, and a call offset parameter through the LU_RSP message. Next, referring to FIG. 3, a process of allocating resources by performing a location update of the MS operating in the idle mode will be described.

3 is a flowchart schematically illustrating a process of allocating resources by performing a location update of an MS operating in an idle mode.

Referring to FIG. 3, in step 301, the call controller receives an LU_REQ message requesting a location update from the MS and proceeds to step 303. In step 303, the call controller performs a location update of the MS to identify the call group in which the MS is located, and proceeds to step 305. In step 305, the call controller transmits an LU_RSP message, which is a response message to the LU_REQ message, allocates a call group ID, a call period, and a call offset parameter. In step 307, the call controller receives an LU_Confirm message indicating that the LU_RSP message has been transmitted from the BS to the MS.

As described above, the MS operating in the idle mode does not perform any transmission / reception of traffic and thus does not consume BS resources. However, when the BS receives a service request from the MS, the BS should allocate resources for the same service as the service supported before the MS transitions to the idle mode, that is, when the MS operates in the awake mode. In addition, MSs operating in idle mode are free to move BSs in a call group, so that there are a plurality of MSs using a particular FA in the call group.

On the other hand, when there are a plurality of MSs using a particular FA in a specific call group, when the MSs request an awake state transition to the BS in order to receive the service, the same service as the service supported in the awake mode is supported. The BS, which should allocate resources for the MS, fails to accommodate the MS's request due to lack of resources.

Accordingly, an object of the present invention is to provide a method and system for allocating resources to a mobile terminal operating in an idle mode in a communication system.

Another object of the present invention is to provide a resource allocation method and system for distributing mobile terminals using a specific frequency assignment (FA) in a call group of a communication system.

Another object of the present invention is to provide a method and system for allocating a resource for a mobile terminal operating in an idle mode in a communication system to allocate a new FA at a required time according to a location update condition newly proposed by the present invention.

The method of the present invention for achieving the above object; A method for allocating a resource of a call controller in a communication system, the method comprising: receiving resource consumption state information indicating resource consumption for each FA from each base station in a call group, and performing a location update of a mobile terminal operating in an idle mode; Identifying a call group in which the terminal is located; and assigning an FA with the least resource consumption to the mobile terminal according to resource consumption status information for each FA of each base station in the call group in which the mobile terminal is located.

Another method of the present invention for achieving the above object is; A method for a mobile terminal to allocate resources from a call controller in a communication system, the method comprising: requesting a location update to a call controller by a mobile terminal operating in an idle mode; and in a call group in which the mobile terminal is located from the call controller. It includes the process of assigning the FA with the lowest resource consumption for each base station FA.

The system of the present invention for achieving the above object; In a system for allocating resources in a communication system, a mobile station receives resource consumption state information indicating resource consumption by frequency allocation (FA) from base stations included in a call group managed by the mobile station and operates in idle mode. Check the call group where the mobile terminal is located by performing a location update of the terminal, and allocate the FA with the least resource consumption to the mobile terminal according to the resource consumption status information for each FA of each base station in the call group where the mobile terminal is located. And a call controller.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, only parts necessary for understanding the operation of the present invention will be described, and other background art will be omitted so as not to distract from the gist of the present invention.

The present invention proposes a method and system for allocating resources to a mobile station (MS) which operates in idle mode in a communication system.

In addition, the present invention proposes a resource allocation method and system for distributing MSs using a specific frequency assigned (FA) in a call group of a communication system. In an embodiment of the present invention to be described later, by distributing the MS using a specific FA to enable the MS operating in the idle mode to more efficiently use the system resources of the base station (BS: hereinafter referred to as "BS") We propose a resource allocation method and system.

In addition, the present invention proposes a method and system for allocating a resource for allowing an MS operating in an idle mode in a communication system to be allocated a new FA at a required time according to a location update condition newly proposed by the present invention. An embodiment of the present invention to be described later proposes a resource allocation method and system that allows the MS to receive a new FA at a necessary time to provide a smooth service by proposing a new condition for the MS to perform its location update. .

First, before entering the description of the present invention, the MS operating in the idle mode requests the location update to update its location, that is, the paging group update, the timer update, and the power down down) Updates and Updates to Medium Access Control (MAC) Hash Skip Threshold will now be described.

First, the call group update will be described.

The MS operating in the idle mode has a Carrier to Interference and Noise Ratio (CINR) of the pilot signal of the serving BS to which the MS currently belongs. If it is less than the CINR of the neighbor BS, that is, the target BS, it is determined that the serving BS has moved from the serving BS to the target BS. The MS operating in the idle mode interprets the system information broadcasted by the target BS and compares a call group identifier (ID) (hereinafter referred to as 'ID') with a call group ID of a previous base station. As a result of the comparison, when the call group ID of the previous base station and the call group ID of the target base station are different, the location update is requested to update its location.

Secondly, the timer update will be described.

The MS operating in the idle mode updates its location by requesting a location update even if a location movement has not occurred after a preset time elapses. The reason why the MS updates the location periodically is that not only can the convenience of location update be increased, but also the reliability of the location of the MS can be increased.

Third, the power down update will be described.

When the MS operating in the idle mode enters the power down state, it updates its location by requesting a location update.

Fourth, the MAC hash skip threshold update will be described.

The MS operating in the idle mode uses a mobile hashing advertisement (MOB_PAG-ADV) message including a MAC hash as a predetermined MAC hash skip threshold. If not, request location update to update your location.

Next, a process in which the MS operating in the idle mode according to the embodiment of the present invention performs resource location update by performing its own location update according to the location update conditions described above will be described. In FIG. 4, only one BS among at least one BS constituting a call group managed by a paging controller is shown for convenience of description.

4 is a signal flow diagram schematically illustrating a process in which an MS operating in an idle mode is allocated a resource by performing a location update according to an embodiment of the present invention.

Referring to FIG. 4, the call controller 405 plays a role of controlling a call group, and periodically receives resource consumption status information for each FA from each BS in the call group managed by the call controller (405). Here, the resource consumption state information is information representing the resource consumption of any FA, which is represented by the amount of available resources of the corresponding FA, that is, the remaining quality of service (QoS). Can be. Here, the QoS is a standard indicating the quality of data transmission in a communication system. For example, data rate per second, signal to noise ratio (SNR), carrier to interference and noise ratio (CINR), and the like. It can be represented as

Meanwhile, when the MS 401 satisfies at least one of the above-described location update conditions, the MS 401 sends a location update request (LU_REQ) message to request its location update (hereinafter, referred to as 'LU_REQ'). And transmits to step 403 (step 409). Upon receiving the LU_REQ message from the MS 401, the BS 403 transmits an LU_REQ message to the call controller 405 (step 411). Wherein the LU_REQ message includes the MAC address of the MS 401 requesting the location update.

Meanwhile, the call controller 405 receiving the LU_REQ message performs the current position update of the MS 401 by referring to the MAC address included in the LU_REQ message. The call controller 405 also includes the resources that were used by the MS 401 before the location update to the available resources in the current call group, that is, the remaining resources. Then, the call controller 405 newly designates the FA with the smallest resource consumption, that is, the amount of the remaining QoS resources, in consideration of the resource consumption status information for each FA received in step 407, and assigns the FA_REQ message to the LU_REQ message. A Location Update Response (LU_RSP) message, which is a response message, is transmitted to the BS 403 (step 413). Upon receipt of the LU_RSP message from the call controller 405, the BS 403 transmits the LU_RSP message to the MS 401 (step 415).

At this time, the call controller 405 allocates a call group ID, a call cycle, a call offset parameter, and the newly designated FA to the MS 401 through the LU_RSP message. Here, the call period parameter is a parameter determined by the system with reference to the call period requested by the MS, and the call offset parameter is used to determine when the system can call a specific MS using the frame number of the BS and the call period parameter. This parameter is used when

Meanwhile, the BS 403 transmits a location update confirmation (LU_Confirm: Location Update Confirm) message to the call controller 405 indicating that the LU_RSP message is transmitted to the MS 401 (step 417). . Next, referring to FIG. 5, a process in which an MS operating in an idle mode according to an embodiment of the present invention performs resource location allocation according to a location update condition newly proposed by the present invention and allocates resources is described. do. In FIG. 5, for convenience of description, only one BS among at least one BS constituting a call group managed by the call controller will be shown.

First, prior to describing FIG. 5, the location update condition newly proposed by the present invention will be described.

The MS operating in the idle mode receives resource consumption status information for each FA and service type from the BSs in the call group in which the MS is located, and corresponds to the available information, that is, the remaining resources and the available resources of the FA used according to the received information. After the system compares a preset value, if the available resources of the FA are less than or equal to the preset value, the system requests a location update to the call controller. Alternatively, the MS requests a location update to the call controller when the MS wants to update its location to the BS having the most remaining resources, that is, the largest amount of the remaining QoS resources, among BSs in the call group in which the MS is located. .

5 is a signal flow diagram schematically illustrating a process in which an MS operating in an idle mode according to an embodiment of the present invention performs resource location update according to a location update condition newly proposed by the present invention and allocates resources.

Referring to FIG. 5, when the BS 503 provides a service in response to a service request of the MS 501, the BS 503 provides resource consumption state information indicating resource consumption by FA and service type regarding its resource consumption. And transmits to step 501 (step 507). At this time, the resource consumption status information for each FA and service type is configured as shown in Table 1 as an example, and the BS 503 uses such information as a downlink channel descriptor (DCD) message or MOB_PAG-ADV as an example. The message is sent to the MS.

division BE UGS rtPS nrtPS ertPS 1 FA 50% Consumption 50% Consumption 50% Consumption 50% Consumption 50% Consumption 2 FA 60% Consumption 60% Consumption 60% Consumption 60% Consumption 60% Consumption 3 FA 70% Consumption 70% Consumption 70% Consumption 70% Consumption 70% Consumption

In Table 1, Be, UGS, rtPS, nrtPS, and ertPS indicate service types. The BE is Best Effort, the UGS is an Unsolicited Grant Service, rtPS is a Real-time Polling Service, nrtPS is a Non-real-time Polling Service, and ertPS is an Extended Real-time Polling Service.

Meanwhile, the call controller 505 periodically receives resource consumption status information for each FA from each BS in the call group managed by the call controller 505 (step 509). Since the resource consumption state information has been described with reference to FIG. 4, a detailed description thereof will be omitted.

On the other hand, the MS 501 when the available resources of the FA, that is, the remaining resources, which are newly used according to the location update condition newly proposed by the present invention, that is, the information received in step 507, are less than or equal to a value preset by the system, Alternatively, if the available resources of the FA used by the MS in the call group are less than those available in the other FAs in the call group, the MS 501 moves to the BS 503 according to the resource consumption status information received in step 507. In step 511, an LU_REQ message requesting an update is transmitted. Upon receiving the LU_REQ message from the MS 501, the BS 503 transmits an LU_REQ message to the call controller 505 (step 513). The LU_REQ message includes the MAC address of the MS 501 requesting the location update.

Meanwhile, the call controller 505 receiving the LU_REQ message performs the current position update of the MS 501 by referring to the MAC address and call group ID included in the LU_REQ message. In addition, the call controller 505 includes the resources that the MS 501 was using before the location update to the available resources in the current call group, that is, the remaining resources. Then, the call controller 505 newly designates the FA with the smallest resource consumption, that is, the largest amount of the remaining QoS resources, in consideration of the resource consumption status information for each FA received in step 509, and assigns to the LU_REQ message. A Location Update Response (LU_RSP) message, which is a response message, is transmitted to the BS 503 (step 515). Upon receiving the LU_RSP message from the call controller 505, the BS 503 transmits an LU_RSP message to the MS 501 (step 517).

At this time, the call controller 505 allocates a call group ID, a call period, a call offset parameter, and the newly designated FA to the MS 501 through the LU_RSP message. Meanwhile, the BS 503 transmits a location update confirmation (LU_Confirm: Location Update Confirm) message to the call controller 505 indicating that the LU_RSP message has been transmitted to the MS 501 (step 517). .

4 and 5 illustrate an example in which the call controller receives resource consumption status information for each FA from each BS in the call group managed by the call controller and allocates FAs in consideration of the received resource consumption status information. However, when the BS does not transmit the resource consumption status information to the call controller, the BS allocates the FA with the least resource consumption to the MS in consideration of the resource consumption status information for each FA, and the allocated FA information. Send to the call controller. Next, a process in which an MS operating in an idle mode according to an embodiment of the present invention performs resource update by performing its location update will be described.

FIG. 6 is a flowchart schematically illustrating a process in which an MS operating in an idle mode is allocated a resource by performing its location update according to an embodiment of the present invention.

Referring to FIG. 6, in step 601, when the MS requests and receives a service from the BS, the MS checks whether resource consumption state information indicating resource consumption by FA and service type is received from the BS. In step 601, if the MS receives resource consumption status information for each FA and service type from the BSs, the MS proceeds to step 603. If the MS does not receive the resource consumption status information, the MS proceeds to step 609.

Meanwhile, in step 603, upon receiving the resource consumption status information for each FA and service type, the MS checks whether the available resources of the FA used by the FA, ie, the remaining resources, are less than or equal to a value preset by the system according to the received information. do. In step 603, if the available resource of the FA is equal to or less than a preset value, step 605 is performed. Alternatively, if the available resources of the FA used by the MS in the call group are smaller than the available resources of the other FA in the call line group, the MS proceeds to step 605 according to the resource consumption status information received in step 601.

In step 605, the MS sends an LU_REQ message requesting a location update to the call controller, and then proceeds to step 607. In step 607, the MS receives an LU_RSP message, which is a response message to the LU_REQ message, from the call controller. In addition, the MS newly designated FA by considering the call group ID, the call period, call offset parameters, and resource consumption status information for each FA received from each BS in the call group managed by the call controller through the LU_RSP message. That is, the FA with the lowest resource consumption is allocated.

In step 609, the MS checks whether at least one of the conditions for performing the location update is satisfied. If the MS satisfies at least one of the location update conditions, the MS proceeds to step 605. Otherwise, the MS proceeds to step 601. Next, referring to FIG. 7, a process of allocating resources by performing a location update of an MS operating in an idle mode according to an embodiment of the present invention will be described.

7 is a flowchart schematically illustrating a process of allocating resources by performing a location update of an MS operating in an idle mode according to an embodiment of the present invention.

Referring to FIG. 7, in step 701, the call controller receives resource consumption status information for each FA from each BS in the call group managed by the call controller, and proceeds to step 703. In step 703, the call controller receives an LU_REQ message requesting a location update from the MS and proceeds to step 705. In step 705, the call controller performs location update of the MS with reference to the MAC address included in the LU_REQ message received from the MS, and proceeds to step 707. Here, the call controller includes the resources that were used by the MS before the location update after the MS performs the location update to available resources, that is, the remaining resources in the current call group. In step 707, the call controller newly designates the FA with the lowest resource consumption, that is, the largest amount of the remaining QoS resources, in consideration of the resource consumption status information for each FA received in step 701, and transmits an LU_RSP message to the MS. In step 709, the new FA, the call group ID, the call period, and the call offset are allocated. In step 709, the call controller receives an LU_Confirm message indicating that the BS has sent the LU_RSP message to the MS.

In the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by those equivalent to the scope of the claims.

As described above, the present invention allocates a new FA to a mobile terminal operating in an idle mode in a communication system in consideration of the load according to frequency allocation (FA), thereby distributing the load for each FA so that system resources can be used more efficiently. have. In addition, according to the present invention, when a resource that a base station can service a mobile terminal is less than or equal to a preset value, the mobile station can be assigned an FA at a necessary time by performing a location update to allocate a new FA.

Claims (22)

In the communication system resource allocation method of the call controller, Receiving resource consumption status information indicating resource consumption by frequency allocation (FA) from each base station in the call group; Confirming a call group in which the mobile terminal is located by performing a location update of the mobile terminal operating in the idle mode; And allocating an FA with the least amount of resource consumption to the mobile terminal according to the resource consumption status information for each FA of each base station in the call group in which the mobile terminal is located. The method of claim 1, And allocating at least one of a call group identifier, a call cycle, and a call offset parameter simultaneously with allocating an FA to the mobile terminal. The method of claim 1, And performing a location update of the mobile terminal and including the resources that were in use before the location update in the available resources in the current call group. The method of claim 1, The resource consumption state information for each FA is represented by the amount of Quality of Service (QoS) resources available in the corresponding FA, and the resource allocation characterized in that the FA having the least resource consumption is the FA having the largest amount of available QoS resources. Way. What is claimed is: 1. A method in which a mobile terminal receives a resource from a call controller in a communication system. Requesting, by the mobile terminal operating in an idle mode, a location update from the call controller; And assigning an FA from the call controller with the lowest resource consumption per frequency allocation (FA) of each base station in the call group in which the mobile terminal is located. The method of claim 5, And assigning at least one of a call group identifier, a call cycle, and a call offset parameter at the same time that the mobile station is assigned an FA. The method of claim 5, The FA with the smallest resource consumption is a FA with the largest amount of available Quality of Service (QoS) resources. What is claimed is: 1. A method in which a mobile terminal receives a resource from the call controller in a communication system. Receiving resource consumption state information indicating resource consumption by frequency and location type from the base stations; Checking whether the available resources of the FA used by the user are less than or equal to a preset value according to the received information; Requesting a location update to the call controller when the available resources of the FA are less than or equal to a preset value; And assigning an FA with the lowest resource consumption for each FA of each base station in the call group in which the mobile terminal is located, from the call controller. The method of claim 8, Checking whether the amount of available resources of the first FA used by the user in the call group is less than the amount of available resources of the other FAs in the call group according to the received resource consumption state information; And requesting a location update to the call controller when the amount of available resources of the first FA is less than the amount of available resources of other FAs except itself in the call group. The method of claim 8, And receiving at least one of a call group identifier, a call cycle, and a call offset parameter while the mobile terminal is assigned an FA. The method of claim 8, The resource consumption state information for each FA is represented by the amount of Quality of Service (QoS) resources available in the corresponding FA, and the resource allocation characterized in that the FA having the least resource consumption is the FA having the largest amount of available QoS resources. Way. In a system for allocating resources in a communication system, Receive resource consumption status information indicating resource consumption according to frequency allocation (FA) from each base station in the call group, and confirm the call group in which the mobile terminal is located by performing a location update of the mobile terminal operating in the idle mode. And a call controller for allocating an FA with the least amount of resource consumption to the mobile terminal according to the resource consumption status information of each base station in the checked call group. And a mobile terminal for requesting a location update from the call controller and receiving a FA having the lowest resource consumption for each FA of each base station in the call group in which the call controller is located. The method of claim 12, If the call controller does not receive the resource consumption status information, the base station for allocating the FA with the least resource consumption to the mobile terminal in consideration of its own resource consumption status information for each FA. The method of claim 12, The call controller further allocates at least one of a call group identifier, a call period, and a call offset parameter while allocating an FA to the mobile terminal; And the mobile terminal is assigned at least one of a call group identifier, a call period, and a call offset parameter at the same time as the FA is allocated. The method of claim 12, And the call controller includes, after performing the location update of the mobile terminal, the resources used by the mobile terminal before the location update in the available resources in the current call group. The method of claim 12, The resource consumption state information for each FA is represented by the amount of Quality of Service (QoS) resources available in the corresponding FA, and the resource allocation characterized in that the FA having the least resource consumption is the FA having the largest amount of available QoS resources. system. A system for allocating resources from a call controller in a communication system, Receive resource consumption status information indicating resource consumption according to frequency allocation (FA) from each base station in the call group, and confirm the call group in which the mobile terminal is located by performing a location update of the mobile terminal operating in the idle mode. And a call controller for allocating an FA with the least amount of resource consumption to the mobile terminal according to the resource consumption status information of each base station in the checked call group. Receive resource consumption status information indicating resource consumption by FA and service type by the base stations. In response to the received information, the controller checks whether the available resources of the FA are less than or equal to a preset value, and if the available resources of the FA are less than or equal to a preset value, request a location update to the call controller, and the call A resource allocation system including a mobile terminal to which the FA is allocated the least amount of resource consumption of each base station in the call group is located from the controller. The method of claim 17, If the call controller does not receive the resource consumption state, the resource allocation system further comprises a base station for allocating the FA with the least amount of resource consumption to the mobile terminal in consideration of the resource consumption state information for each FA. The method of claim 17, The mobile terminal checks whether the amount of available resources of the first FA used by the user in the call group is less than the amount of available resources of the other FAs in the call group according to the received resource state information. And requesting a location update to the call controller when the amount is less than the amount of available resources of other FAs except itself in the call group. The method of claim 17, The call controller further allocates at least one of a call group identifier, a call period, and a call offset parameter while allocating an FA to the mobile terminal; And the mobile terminal is assigned at least one of a call group identifier, a call period, and a call offset parameter at the same time as the FA is allocated. The method of claim 17, And the call controller includes, after performing the location update of the mobile terminal, the resources used by the mobile terminal before the location update in the available resources in the current call group. The method of claim 17, The resource consumption state information for each FA is represented by the amount of Quality of Service (QoS) resources available in the corresponding FA, and the resource allocation characterized in that the FA having the least resource consumption is the FA having the largest amount of available QoS resources. system.

Images