KR101542514B1 - Apparatus and method for selective transmission in mobile communication system - Google Patents

Abstract

A method for selecting a transmission protocol of a control station in a mobile communication system, the method comprising the steps of: determining a first transmission protocol to establish a connection with a base station; and setting a connection setting using the first transmission protocol And performing a connection setup using a second transmission protocol when connection establishment using the first transmission protocol is not possible, the method comprising: a transmission option preference for each service; It provides the technology to select or reject the transfer option according to the protocol configuration and the availability of the resource, so that when the specific resource is not available according to the service, it is possible to utilize other resources and use the effective protocol.

WCDMA, Iu, Iub, ATM, IP.

Description

[0001] APPARATUS AND METHOD FOR SELECTIVE TRANSMISSION IN MOBILE COMMUNICATION SYSTEM [0002]

The present invention relates to an apparatus and a method for selecting a protocol to be used in a 3GPP (3rd Generation Partnership Project) Iub interface section and using the protocol for transmission.

1 is a diagram showing a configuration of a WCDMA access network.

1, an Iub interval in a WCDMA (Wideband Code Division Multiple Access) network refers to an interface between RNCs (Radio Network Controllers) 150 and 170 and Node Bs 152, 154, 172 and 174 .

The RNCs 150 and 170 may directly control the Node Bs 152, 154, 172, and 174, and may be divided into a Serving RNC and a Drift RNC to control the Node B through an Iur interface period. The RNCs 150 and 170 may be connected to other RNCs through the core network 100.

2 is a diagram showing the protocol stack structure of the Iub interface.

Referring to FIG. 2, a transport layer for a control plane and a user plane may be configured as an ATM transmission or an IP transmission scheme.

The Node B Application Part (NBAP) responsible for signaling is configured in the control plane, provides the SSCF / SSCOP / AAL5 / ATM protocol stack with the ATM transport option (option), and the SCTP / IP protocol with the IP transport option to provide.

Traffic forwarding is configured in the user plane, and there are protocols such as DCH FP, RACH FP, FACH FP, PCH FP, HS-DSCH FP, TDD DSCH FP, USCH FP, TFCI 2 FP and E-DCH FP. In the user plane, the AAL2 / ATM protocol is provided as an ATM transmission option, and the UDP / IP protocol is provided as an IP transmission option.

At this time, the ALCAP responsible for the transmission network control is driven when the user plane AAL2 / ATM transmission option is provided.

 The RNC or Node B can select and use the ATM and IP transmission options for the Iub interval.

In addition, a dual protocol can be configured for such a protocol, in which case one of the ATM or IP transmission options must be selected. At this time, the transmission option can be fixedly selected according to the preference of the business operator.

However, this fixed choice can not provide services in spite of the lack of certain kinds of resources, even though there is room for other resources. That is, there is a problem that it is difficult to support efficient utilization of available resources according to the type of service

It is an object of the present invention to provide an apparatus and a method for selective transmission in a mobile communication system.

It is another object of the present invention to provide an apparatus and method for selecting a transmission protocol for signaling or traffic transmission in an RNC in which a dual protocol for ATM and IP transmission is implemented in a mobile communication system and in an Iub interface period.

It is another object of the present invention to provide a mobile communication system and an Iur / Iub transmission method, in which a preferred transmission option for each service, a transmission protocol that can be provided by a counterpart Node B, And an apparatus and a method for selecting an appropriate protocol from among the above.

According to a first aspect of the present invention, there is provided a method for selecting a transmission protocol of a control station in a mobile communication system, the method comprising the steps of: determining a first transmission protocol for establishing connection with a base station; And performing a connection setup using the second transmission protocol when connection establishment using the first transmission protocol is not possible. .

According to a second aspect of the present invention, there is provided a method of notifying a BS of a transmission protocol availability state in a mobile communication system, the method comprising: receiving a message including information requesting a usable state of a transport protocol from a control station; And transmitting the response message including the available state of the transmission protocol to the base station when the message is received.

According to a third aspect of the present invention, there is provided a control station selecting a transmission protocol in a mobile communication system, the control station determining a first transmission protocol to perform connection establishment with a base station, And performing a connection setup using the second transmission protocol when the connection establishment using the first transmission protocol is not possible with the base station.

According to a fourth aspect of the present invention, there is provided a base station apparatus for notifying a usable state of a transmission protocol in a mobile communication system, the base station comprising: a receiving unit for receiving a message including information for requesting a usable state of a transmission protocol from a control station; And transmitting a response message including an availability state of the transmission protocol to the base station when the message is received.

In the present invention, a technique of selecting or rejecting a transmission option is provided according to a preference degree of a transmission option according to a service, a protocol configuration of a counterpart Node B, and a resource availability, so that when a specific resource is not available according to a service, There is an advantage that an efficient protocol can be used.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Hereinafter, an apparatus and a method for selective transmission in a mobile communication system will be described. In the following description, the RNC denotes a control station and the node-B denotes a base station. The present invention is applicable to both direct Iub transmission and Iur / Iub transmission. A dual protocol RNC with ATM and IP transmission capability in the Iub interval must select one transmission option to provide a specific service. For this, the RNC sets the preferred transmission option for each lub service and the lub protocol stack that the counterpart Node B can provide.

Table 1 shows the transmission options selected by preference according to the type of Iub service.

Service type Detailed classification Preferred transfer options NBAP ATM only
DCH FP
Speech IP preferred Signaling ATM preferred Data IP preferred RACH FP ATM only FACH FP ATM only HS-DSCH FP IP preferred E-DCH FP IP preferred Default ATM only

 In the case of DCH FP, HS-DSCH FP, E-DCH FP, DSCH FP, and USCH FP in Table 1, it is possible to further distinguish between Speech, RRC and Data. There is a preferred transmission option for each subdivision. This subdivision can be distinguished by using the "TrCH Source Statistics Descriptor" field of the RNSAP message not only in the RNC directly controlling the Iub but also in the DRNC via the Iur. Also, services that are not separately categorized will use the default transmission option.

The RNC can store the available Iub protocol information of the correspondent Node B as shown in Table 2 below.

Node Id Iub protocol stack options Node B # 0 ATM Node B # 1 Dual ... ... Node B #n IP

In the present invention, in the RNC configured with a dual protocol for ATM and IP transmission in the Iub interval, a transmission option of a service is selected using the configured configuration and a resource allocation is determined. The procedure for this is performed in the RNC and in the DRNC when the radio link is via Iur.

For this, the RNC should have information on the available Iub protocol of the correspondent Node B, and determine the preferred transmission option according to the service type and the detailed classification. After that, whether or not the resource is allocated is determined and it is determined whether or not the resource is allocated.

3 is a flowchart illustrating a transmission option selection process for an ATM node B according to an embodiment of the present invention.

Referring to FIG. 3, if the priority transmission option of the ATM node B is P (step 310), the RNC checks whether the P for the ATM node B is IP only (step 315).

If the P is only IP, the use of IP transmission between the RNC and the ATM node B is denied (step 325).

If the P is not only the IP, that is, the ATM priority, the IP priority, or the ATM only, and if the ATM resource between the RNC and the ATM node B is available (step 320), the RNC And the ATM node B (step 330).

If the ATM resource between the RNC and the ATM node B is not available (step 320), the RNC and the ATM node B are not in the available state, The use of IP transmission between ATM node B and use of ATM transmission is denied (step 425). Thereafter, the algorithm of the present invention terminates.

4 is a flowchart illustrating a transmission option selection process for an IP node B according to an embodiment of the present invention.

Referring to FIG. 4, if the priority transmission option of the IP node B is P (step 410), the RNC checks whether the P for the IP node B is only the ATM (step 415).

If the P is only the ATM, the use of the ATM transmission between the RNC and the IP node B is denied (step 425).

If the P is not only the ATM, i.e., the ATM priority, the IP priority, or the IP only, and the IP resource between the RNC and the IP node B is available (step 420), the RNC and the IP IP transmission is used between node B (step 430).

If the IP resource between the RNC and the IP node B is not available (step 420), the RNC and the IP node B are not available, The use of the IP transmission and the use of the ATM transmission between the IP node B are denied (step 425). Thereafter, the algorithm of the present invention terminates.

5 is a flowchart illustrating a transmission option selection process for a dual protocol node B according to an embodiment of the present invention.

Referring to FIG. 5, the priority transmission option of the dual protocol node B is defined as P (step 510).

If the RNC and the dual protocol node B are in an available state (step 530), the RNC determines whether the RNC and the dual protocol node ATM transmission is used between B (step 550).

If the IP resources of the RNC and the dual protocol node B are not available (step 530), the IP resources of the RNC and the dual protocol node B are available (step 540) IP transmission is used between the RNC and the dual protocol node B (Step 555).

If the RNC and the dual protocol node B are not in an available state (step 530) and the IP resources of the RNC and the dual protocol node B are not available (step 540), the RNC And the use of the IP transmission between the dual protocol node B and the ATM transmission is denied (operation 560).

If the P for the dual protocol node B is not an ATM priority (step 515), and if it is IP priority (step 520), it checks whether the IP resources of the RNC and the dual protocol node B are available (step 535 ),

If the IP resources of the RNC and the dual protocol node B are available (step 535), IP transmission is used between the RNC and the dual protocol node B (step 555).

If the IP resources of the RNC and the dual protocol node B are not available (step 535), if the RNC and the ATM resource of the dual protocol node B are available (step 545), the RNC And the dual protocol node B (step 550).

If the IP resources of the RNC and the dual protocol node B are not available (step 535), and the RNC and the ATM resource of the dual protocol node B are not available (step 545) The use of the IP transmission between the dual protocol node B and the use of the ATM transmission is denied (operation 560).

If the P for the dual protocol node B is not the ATM priority (step 515), it is not the IP priority (step 520), only the IP (step 525), the IP resources of the RNC and the dual protocol node B are available (Step 540)

If the IP resources of the RNC and the dual protocol node B are available (step 540), IP transmission is used between the RNC and the dual protocol node B (step 555) step).

If the IP resources of the RNC and the dual protocol node B are not available (step 540), IP transmission between the RNC and the dual protocol node B and ATM transmission between the RNC and the dual protocol node B (Step 560).

If the P for the dual protocol node B is not the ATM priority (step 515), it is not the IP priority (step 520) and the IP is not the only one (step 525) It is checked whether the resource is available (step 545)

If the RNC and the ATM resource of the dual protocol node B are available (step 545), ATM transmission is used between the RNC and the dual protocol node B (step 550).

If the RNC and the ATM resource of the dual protocol node B are not available (step 545), the use of the IP transmission and the use of the ATM transmission between the RNC and the dual protocol node B are denied (step 560) . Thereafter, the algorithm according to the present invention terminates.

6 is a message flow diagram for confirming whether a selected transmission protocol is available according to an embodiment of the present invention.

Referring to FIG. 6, in order to know whether the RNC can use an ATM resource or an IP resource in FIG. 5, the following method is used.

The RNC 610 transmits an RL Setup Request message to the corresponding Node B 650 to request availability of the corresponding resource, and the Node B 650 transmits an RL Setup Response message including the response to the RNC 610 to inform the availability of the ATM resource or the IP resource. The message used here can be changed.

7 is a block diagram of an RNC and a Node B according to an embodiment of the present invention.

7, the RNC and the Node B of the present invention include a communication modem 710, a control unit 720, a storage unit 730, and a resource management unit 740.

First, the components of the RNC will be described below.

The communication modem 710 is a module for communicating with other nodes, and includes a wire processing unit and a baseband processing unit. The wired processing unit converts the signal received through the wired path into a baseband signal and provides the baseband signal to the baseband processing unit. The wired processing unit changes the baseband signal from the baseband processing unit to a wired signal so that the baseband signal can be transmitted on the actual wired path, ≪ / RTI >

The controller 720 controls the overall operation of the RNC. In particular, the resource management unit 740 is controlled according to the present invention.

The storage unit 730 stores a program for controlling the overall operation of the RNC and temporary data generated during program execution. In particular, in accordance with the present invention, the base station stores information about available transport protocols.

The resource management unit 740 communicates with the node B using the corresponding transport protocol when the transport protocol (ATM or IP) to be used is available with the information on the transport option of the communicating node B.

The resource management unit 740 can continue to perform communication using a possible transmission protocol when the transmission protocol to be used is not available but the corresponding node B can support another transmission protocol and is available.

The resource management unit 740 can know the availability state of the transmission protocol of the node B by exchanging a message with the node B for a specific message (RL Setup Request, RL Setup Response). The specific message may be a different kind of message, as described above.

In the above-described block configuration, the control unit 720 may perform the function of the resource management unit 740. In the present invention, these are separately constructed and described in order to describe each function separately.

Therefore, when the product is actually implemented, the control unit 720 may process all the functions of the resource management unit 740, and the control unit 720 may process only a part of the functions.

Now, the components of the Node B will be described as follows.

The communication modem 710 is a module for communicating with the RNC and includes a wire processing unit and a wired baseband processing unit. The wired processing unit converts the signal received through the wired path into a baseband signal and provides the baseband signal to the wired baseband processing unit. The wired processing unit changes the baseband signal from the wired baseband processing unit to a wired signal so that the baseband signal can be transmitted on the actual wired path And transmits through the wired path.

The communication modem 710 is a module for communicating with a terminal, and includes a radio processing unit and a radio baseband processing unit. The radio processor converts the signal received through the radio path to a baseband signal and provides the baseband signal to the radio baseband processor. The baseband processor converts the baseband signal from the radio baseband processor into a radio signal And transmits through the radio path.

The controller 720 controls the overall operation of the Node-B. In particular, the resource management unit 740 is controlled according to the present invention.

The storage unit 730 stores programs for controlling the overall operation of the Node-B and temporary data generated during program execution.

The resource manager 740 receives a request for an available state of a transport protocol requested by the RNC and provides the response to the RNC.

The resource management unit 740 exchanges a specific message (RL Setup Request, RL Setup Response) message with the RNC. The specific message may be a different kind of message.

In the above-described block configuration, the control unit 720 may perform the function of the resource management unit 740. In the present invention, these are separately constructed and described in order to describe each function separately.

Therefore, when the product is actually implemented, the control unit 720 may process all the functions of the resource management unit 740, and the control unit 720 may process only a part of the functions.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

1 is a diagram showing a configuration of a WCDMA access network,

2 shows a protocol stack structure of the Iub interface,

3 is a flowchart illustrating a transmission option selection process for an ATM node B according to an embodiment of the present invention.

4 is a flowchart illustrating a transmission option selection process for an IP node B according to an embodiment of the present invention.

FIG. 5 is a flowchart illustrating a transmission option selection process for a dual protocol node B according to an embodiment of the present invention. FIG.

6 is a message flow diagram for confirming whether a selected transmission protocol is available according to an embodiment of the present invention,

7 is a block diagram of an RNC and a Node B according to an embodiment of the present invention.

Claims (18)

A method of operating a control station in a mobile communication system, Receiving protocol information that can be supported by a base station, Determining a protocol option corresponding to a service type and a transmission protocol to perform a connection setup with the base station based on the protocol information, Wherein the step of determining the transmission protocol comprises: Determining a first protocol based on the protocol option and the protocol information; Determining if a second resource of the second protocol is available if the first resource of the first protocol is not available; And determining the second protocol as the transport protocol when the second resource is available. A method of operating a base station in a mobile communication system, Generating protocol information indicating a protocol type supported by the base station; And transmitting the protocol information to the control station so that the control station can determine a transmission protocol for establishing connection with the base station, Wherein the transmission protocol comprises: A method by which the control station determines whether or not the first resource of the first protocol is available and the second resource of the second protocol is available based on the protocol option corresponding to the service type and the protocol information . A control station apparatus in a mobile communication system, A communication modem for receiving protocol information that can be supported by the base station, And a control unit configured to determine a protocol to be used for establishing a connection with the base station based on the protocol option corresponding to the service type and the protocol information, Wherein the control unit determines a first protocol based on the protocol option and the protocol information and determines whether a second resource of the second protocol is available if the first resource of the first protocol is not available, And when the second resource is available, determines the second protocol as the transport protocol. 1. A base station apparatus in a mobile communication system, A control unit for generating protocol information indicating a protocol type supported by the base station; And a communication modem for transmitting the protocol information to the control station so that the control station can determine a transmission protocol for establishing connection with the base station, Wherein the transmission protocol is configured to allow the control station to transmit at least one of a protocol option corresponding to the service type and whether the first resource of the first protocol is available based on the protocol information and whether or not the second resource of the second protocol is available Lt; / RTI > The method according to claim 1, The protocol information includes: Wherein the information includes information indicating whether or not at least one of ATM (Asynchronous Transfer Mode) and IP (Internet Protocol) can be supported. The method according to claim 1, The protocol options include: ATM only available, IP only available, ATM preferred, IP preferred. The method according to claim 1, And establishing a connection with the base station based on the transmission protocol. 3. The method of claim 2, The protocol information includes: Wherein the information includes information indicating whether or not at least one of ATM (Asynchronous Transfer Mode) and IP (Internet Protocol) can be supported. 3. The method of claim 2, And establishing a connection with the base station based on the transmission protocol. The method of claim 3, Wherein the protocol information includes information indicating whether or not at least one of ATM (Asynchronous Transfer Mode) and IP (Internet Protocol) can be supported. The method of claim 3, Wherein the protocol option comprises at least one of ATM only, IP only, ATM preference, IP preference. The method of claim 3, Wherein the control unit establishes a connection with the base station based on the transmission protocol. 5. The method of claim 4, Wherein the protocol information includes information indicating whether at least one of ATM (Asynchronous Transfer Mode) and IP (Internet Protocol) is available. 5. The method of claim 4, And the control unit performs connection setting with the control station based on the transmission protocol. The method according to claim 1, Wherein the step of determining the transmission protocol comprises: And not performing the connection establishment if the first resource is not available. The method according to claim 1, Wherein the step of determining the transmission protocol comprises: And not performing the connection establishment if the second resource is not available. The method of claim 3, Wherein the control unit does not perform the connection setting if the first resource is not available. The method of claim 3, Wherein the control unit does not perform the connection setting if the second resource is not available.

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