KR20020052441A - Billing Rate Change Method Depending on changing Transport Channel - Google Patents

Abstract

PURPOSE: A method for changing a billing rate by a transport channel change is provided to transmit changed information to the structure of a change transmission rate indication message using a RANAP(Radio Access Network Application Part) procedure in order to transfer a user's service channel change to an MSC(Mobile Switching Center) or an SGSN(Serving GPRS Support Node) in a UTRAN(Universal Terrestrial Radio Access Network). CONSTITUTION: The structure of a message to report an environment change in a UTRAN from an RNC(Radio Network Controller) to a CN(Core Network) comprises a message type field to indicate a transmission rate and a field to indicate setup or modification for an RAB(Radio Access Bearer) to transmit and receive traffic data between the RNC and the CN. Also the message structure comprises a field to indicate the first setup or a modified item in a system environment, a field to indicate the RAB's ID, and a field to indicate the sub parameters of the RAB.

Description

Billing Rate Change Method Depending on Changing Transport Channel

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a change in billing ratio by changing a transport channel of a mobile communication system. In particular, the RNC (Radio Network Controller) (hereinafter referred to as control in the DS-MAP (asynchronous) type IMT-2000 system of a mobile communication system) The present invention relates to a method of changing a charging rate by changing a transmission channel that defines and executes a Change Transmission Rate Indication procedure to change a user's billing rate according to a transmission channel change. .

More specifically, the present invention is directed to the fact that CN (Core Network) (core) lowers the quality of the Radio Access Bearer that is already established in the Universal Area Radio Access Network (UTRAN) including the control station. In order to notify the network, a radio access network application part (RANAP) is installed in a radio network layer to form a transport network layer and a procedure to form the above-mentioned transmission rate. This allows the transmission of a Change Transmission Rate Indication message.

1 is a block diagram of an IMT-2000 system in which the DS-MAP (asynchronous) method of the prior art and the present invention is implemented.

For example, a user equipment (UE) 10 manages a mobile station (MS), a base station 20a (Node B), a control station 20b (RNC; Radio Network Controller) and the control station of a mobile communication. Universal Terrestrial Radio Access Network (UTRAN), including Control Station Manager 20c (BSM, Base Station Manager), Switching Station 30a (MSC, Mobile Switching Center) and HLR 30b (Core Location), including CN (Home Location Register), SGSN (30c) (Serving GPRS Support Node) and VLR (30d) (Visitor Location Register).

Once again, the above configuration, several RNC is connected to the CN and each RNC is connected to a large number of base stations (Node B).

The CN includes the MSC that controls the Circuit Switched Domain and the SGSN, HLR, and VLR that control the Packet Switched Domain.

FIG. 2 is a block diagram of the equipment in the CN, which is connected to MSN, SGSN, HLR, and VLR in the CN 30 and includes a billing system 31 for managing billing (billing) information of the mobile subscriber 10. .

Hereinafter, a method of managing conventional billing information will be described with reference to the drawings.

In the conventional Universal Mobile Telecommunication System (UMTS), a network element for calculating a user's fee is CN.

In particular, MSC is in charge of Circuit Switched Domain and SGSN is in charge of Pack Switched Domain.

In the above, UM refers to a next-generation personal communication service that can provide a certain service anywhere by integrating a cellular phone, a cordless telephone, a wireless subscriber network, a wireless LAN, and the like. UMTS is a European standard based on the Global System for Mobile Communications (GSM) network, standardized by ETSI.

The MSC 30a or SGSN 30c generating billing information allocates a dedicated channel (DCH) to the mobile terminal 10, which is a user equipment, at the control station and the base station in case of origination or reception. And billing data is generated.

In other words, it determines that only one mobile subscriber occupies one channel at the time of outgoing or incoming service and generates billing data in proportion to the usage time.

In other words, when the called party responds, the call starts counting and stops counting at the end of the call, and the billing data is generated according to a predetermined rate.

However, in the conventional method of generating billing (billing) data, even if the channel allocation information for providing the service to the terminal 10 is changed in the UTRAN (Universal Terrestrial Radio Access Network) while the mobile terminal receives the call service, the UTRAN 20 ) Does not convey the user's service use channel change to the MSC 30a or SGSN 30c, so that the user cannot be charged appropriately.

Accordingly, the present invention is to solve the above problems, and when the channel assignment information for providing a service to the terminal in the UTRAN is changed while the mobile terminal receives the call service, changing the service use channel of the user in the UTRAN MSC or In order to transmit to the SGSN, the changed information is transmitted in the structure of the message indicating the change transmission rate using the Radio Access Network Application Part (RANAP) procedure.

1 is a block diagram of an IMT-2000 system in which the DS-MAP (asynchronous) method of the prior art and the present invention is implemented.

2 is a block diagram of equipment in the CN.

3 is a structure for an Iu-CS Interface for supporting a procedure for transmitting channel change information from an RNC to an exchange that is an object of the present invention.

4 is a structure for an Iu-PS Interface for supporting a procedure for transmitting channel change information from an RNC to an SGSN, which is an object of the present invention;

5 is a message structure for sending information indicating the changed transmission rate to the CN when there is a change in the transmission rate between the RNC and the user terminal 10. FIG.

6 is a detail of RAB subparameters in the message structure of FIG.

7 is a flowchart of an embodiment of the present invention.

The charging rate change method according to the transmission channel change according to the present invention is implemented by defining a message structure for notifying the core network from a control station of an environment change in a universal area wireless access network (UTRAN). ; Information indicating whether a path for transmitting / receiving traffic data between the control station and the core network is set or modified; Information indicative of initial settings or changed items of the system environment; Information indicating an ID of a passage separator; Characterized in that it represents the sub-elements of the passage separator.

In addition, in the message structure for changing the charging rate by changing the transmission channel of the present invention, the message type, information indicating the initial setting or changed item of the system environment, the ID of the path separator and the sub-elements of the path separator are determined by the control station. It is an essential element when notifying the core network of the change of environment between user devices.

In addition, the message structure for changing the charging rate by changing the transmission channel of the present invention is characterized in that the path separator has a certain range when it is set or changed, and the path separator sub-element can transmit the maximum byte rate, guaranteed byte rate, and send at once. It is characterized by including the information quantity (SDU) structure.

Other objects and features of the present invention will become apparent from the detailed description of the embodiments with reference to the accompanying drawings.

Hereinafter, a method of changing a billing ratio by changing a transmission channel of a control station according to the present invention will be described with reference to the accompanying drawings.

3 illustrates a structure for an Iu-CS interface for supporting a procedure of transmitting channel change information, which is an object of the present invention, from an RNC 20b (control station) to an exchange 30a (MSC).

The Iu means an interconnection point between an RNC and a core network. The Iu-CS Interface is an interface for message exchange between the RNC and the MSC controlling the Circuit Switched Domain.

The Iu-CS interface structure is composed of a radio network layer and a transport network layer.

The wireless network layer includes a control plane including RANAP and a user plane including an Iu UP Protocol layer.

In addition, the transport network layer includes a transport network user plane for transmitting and receiving information to and from the RANAP portion of the control plane, a transport network user plane for transmitting and receiving information to and from the Iu UP Protocol layer, and And a transport network control plane for controlling the transport network user plane.

4 illustrates a structure for an Iu-PS Interface for supporting a procedure of transmitting channel change information, which is an object of the present invention, from the RNC 20b (control station) to the SGSN 30c.

The Iu is as described above, and the Iu-PS Interface is an interface for message exchange between the RNC and the SGSN controlling the Packet Switched Domain.

The Iu-PS interface structure is composed of a radio network layer and a transport network layer.

The wireless network layer includes a control plane including RANAP and a user plane including an Iu UP Protocol layer.

The transport network layer also includes a transport network user plane for transmitting and receiving information to and from the RANAP portion of the control plane, and a transport network user plane for transmitting and receiving information to and from the IU UP Protocol layer. Consists of.

5 is a message structure for sending information indicating the change transmission rate to the CN when there is a change in the transmission rate between the RNC and the user terminal 10.

First, the RANAP procedure and message structure for transferring change information from the RNC to the CN are described.

Since a dedicated channel must be set in the radio resource control (RRC) layer in the RNC 20b to provide a service to a user, a dedicated medium access control (MAC-d) layer is set.

At this time, the maximum and minimum volume thresholds are transferred to the MAC layer.

The maximum / minimum two values are values used when the MAC layer determines that the number of data accumulated in the buffer between the RLC LAYER and the MAC LAYER is too much or too little. In other words, to determine whether too much data is accumulated in the buffer between RLC (Radio Link Control) layer and MAC Layer in RNC, the current data buffer size is compared with the maximum threshold. There is a need to expand bearer capacity.

If the current data buffer size is smaller than the minimum threshold, the transmission channel converts the dedicated channel allocated to the user into a common transport channel to increase resource usage efficiency in the UTRAN. Performs Transport Channel Switching or Transport Format Combination Indication (TFCI) Reconfiguration.

When the TFCI (Transport Format Combination Indication) Reconfiguration function is executed, the service quality of the serviced user is lower than the initial call setup, but the usage fee is charged the same.

Therefore, in order to adjust the billing rate that the CN imposes on the user by informing the CN of the change of the transmission speed in the RNC, a RANAP procedure for transmitting information from the RNC to the CN is configured. The CS Interface and the Iu-PS Interface are shown in FIGS. 3 and 4.

The message structure for sending the information indicating the change transmission rate of FIG. 5 represents a parameter required for performing the above RANAP procedure.

In FIG. 5, a change transmission rate is used as a message type, and an initial message is used as a type of message.

The RAB (Radio Access Bearer) is a path for transmitting / receiving traffic data between the RNC and the CN. The RAB ID is an identifier of the RAB whose actual quality of service is changed, and the RAB sub parameters, which are detailed parameters, are represented in FIG. 6.

First, in the present invention, the message structure indicating the change transmission rate of FIG. 5 used in the RANAP procedure for proper charging to the user 10 will be described.

A message structure for notifying the control network (RNC) to the core network (CN) of an environment change in a universal area radio access network (UTRAN), the message type indicating a transmission rate, and transmitting / receiving traffic data between the RNC and the CN. The passage includes a portion indicating whether or not to be set or modified, a portion indicating the first setting or changed of the system environment, a portion indicating the ID of the passage separator, and a portion indicating the sub-elements of the passage separator. .

In FIG. 5, M is an abbreviation of Mandatory and indicates information necessary in a message structure when transmitting a change of information.

Therefore, the message structure, the part indicating the first setting or changed item of the system environment, the ID of the path separator, and the sub-elements of the path separator are necessary elements when notifying the CN of the information change between the RNC and the user equipment. to be.

In the message structure of FIG. 5, the path separator indicates a predetermined range when the path separator is set or changed. That is, from 0 to the maximum number of RABs.

FIG. 6 shows details of RAB subparameters in the message structure of FIG.

As shown in the figure, the Path Delimiter (RAB) sub-element includes the maximum byte rate, guaranteed byte rate, and information quantity (SDU) structure that can be sent at one time.

7 is a flowchart illustrating an embodiment of the present invention, in which a message structure indicating a change transmission rate is generated and notified to a CN (control station) when there is an environment change between a terminal and a universal area wireless access network (UTRAN) when providing a service. It is simplified.

As described above, in the present invention, a billing ratio of a user is defined by defining and using a message structure using a RANAP procedure to transmit a change in a service use channel between a control station (RNC) and a user terminal, from the RNC to a CN (control station). Can be calculated appropriately.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. In other words, in the DS-MAP (asynchronous) IMT-2000 system, if the service quality for the user is lowered by a function such as transport channel switching or TFCI reconfiguration in the RNC, it is notified to the CN and billed appropriately. Available as a method of estimating the ratio.

Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

The present invention improves the inability to charge the user appropriately because the RNC does not transmit from the RNC to the CN even if the channel allocation information, which is a conventional problem, is changed. By defining the message structure using the RANAP procedure to transfer the change from the RNC to the CN, the user's billing rate can be properly calculated.

Claims (2)

In the mobile communication system, A method of changing a charging rate by changing a transmission channel, wherein a message structure indicating a change transmission rate is created and notified to a CN (control station) when there is an environment change between a terminal and a universal area wireless access network (UTRAN). 2. The message structure according to claim 1, further comprising: a message structure for notifying a core network from a control station of an environment change in a universal area radio access network (UTRAN), the message type indicating a transmission rate; Information indicating whether a path for transmitting / receiving traffic data between the control station and the core network is set or modified; Information indicative of initial settings or changed items of the system environment; Information indicating an ID of a passage separator; And a charging ratio change method according to a transmission channel change, comprising information indicating sub-elements of the path separator.