KR100667350B1 - Data transfer system and method for changing rate according to uplink events occurrence - Google Patents

Abstract

A data transmission system and a method for changing a transfer rate according to uplink event occurrence are provided to transfer data at the maximum transfer rate which is respectively different according to attributes of data uplinked to application or radio web site corresponding to a data service, thereby efficiently using limited radio resources to the maximum. A data transmission system for changing a transfer rate according to uplink event occurrence comprises the followings: an application server(140) which includes maximum transfer rate information pre-defined correspondingly to each uplink event; a user terminal(110) which includes application and browser corresponding to one or more data services, includes default transfer rate information preset correspondingly to the application server(140), and generates radio resource setup request information before transmitting the generated information; and an RNC(Radio Network Controller)(120) which extracts maximum transfer rate information from the radio resource setup request information, and changes and assigns radio resources correspondingly to the maximum transfer rate information.

Description

Data transfer system and method for changing rate according to uplink events occurrence}

1 is a block diagram of a data transmission system capable of transmitting data by variably allocating radio resources according to a transmission rate of an uplink event according to an embodiment of the present invention.

2 is a diagram illustrating a session establishment process in a WCDMA packet network according to an embodiment of the present invention.

3 is a flowchart illustrating a process of changing a radio resource according to radio resource change request information of a user terminal according to an exemplary embodiment of the present invention.

4 is a block diagram of a user terminal according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

110: user terminal

115: node B

120: radio network controller

130: Serving GPRS Support Node (SGSN)

135: Gateway GPRS Support Node (GGSN)

140: application server

The present invention relates to a data transmission system and method, and more particularly, to a data transmission system and method for changing the transmission rate in accordance with the occurrence of an uplink event in a WCDMA network.

In general, when a user terminal attempts a packet call, the user terminal is routed to a server that provides an external packet service through a wideband code division multiple access (WCDMA) network. In general, WCDMA has a number of effective subscribers available for each sector corresponding to a service to be used by a user terminal. In addition, a radio resource is fixedly allocated according to quality of service information corresponding to a service to be provided by the user terminal, and a packet channel is set to fixed. In other words, when the user terminal requests radio resources and packet channels at the maximum data transmission rate in order to improve the quality of service, the number of effective subscribers in one sector decreases, and in order to increase the number of effective subscribers in one sector, Requesting radio resources and packet channels at a low data rate causes a problem of poor service quality.

Accordingly, an object of the present invention for solving the above problems is to transmit data according to the transmission rate of the uplink event that can transmit data at different maximum transmission rates for each data attribute uplinked to the application or wireless web site corresponding to the data service. It is to provide a system and method.

Another object of the present invention is to provide a data transmission system and method according to a transmission rate of an uplink event that can efficiently use limited radio resources.

Other objects of the present invention will be easily understood through the description of the following examples.

In order to achieve the above object, according to an aspect of the present invention, there is provided a data transmission system and a user terminal that can change the transmission rate in accordance with the uplink event occurs.

According to one preferred embodiment of the present invention, there is provided an application server including a maximum maximum rate information predefined for each uplink event; A user terminal equipped with an application and a browser corresponding to one or more data services, and generating and transmitting radio resource setting request information including default transmission rate information corresponding to the application server to be connected; And a wireless network controller extracting the maximum rate information from the radio resource setting request information and changing and allocating a radio resource according to the maximum rate information, wherein the user terminal is configured to correspond to data to be transmitted to the application server. When the link event occurs, the data transmission system capable of changing the transmission rate according to the generation of the uplink event, characterized in that to receive the maximum rate information, and to generate and transmit radio resource change request information including the maximum rate information. Can be.

When the data transmission is completed, the user terminal may transmit the radio resource setting request information including the default transmission rate information to the radio network controller.

The maximum rate information is set by predefined tag and attribute information, and the user terminal may recognize the maximum rate information corresponding to the uplink event by receiving the tag and attribute information.

The uplink event may be generated when the user inputs a command set corresponding to a button or a menu set to transmit arbitrary data to an application server while running a wireless web site, an application corresponding to one or more services, or a browser. uplink) may be one or more commands generated to perform an operation.

According to another embodiment of the present invention, a user terminal equipped with an application and a browser corresponding to one or more data services, comprising: an information analyzer configured to determine whether an uplink event has occurred and generate uplink event occurrence information; A data transmission / reception unit configured to receive maximum transmission rate information from an application server to which data is to be transmitted in response to the uplink event occurrence information or to transmit the data to the application server; And an information generator configured to generate radio resource allocation request information or radio resource change request information including default rate information or the maximum rate information according to the application and the wireless Internet access.

According to another aspect of the present invention, the user terminal of the data transmission system according to the transmission rate of the uplink event including a user terminal, a wireless network controller, an application server transmits data in accordance with the transmission rate change according to the occurrence of the uplink event A method is provided.

According to an exemplary embodiment of the present invention, the user terminal of the data transmission system according to the transmission rate of the uplink event including the user terminal, the radio network controller, and the application server is configured to correspond to the data rate change according to the uplink event occurrence. A method of transmitting, wherein the user terminal is equipped with an application or browser corresponding to a data service, generating an uplink event; Receiving the maximum rate information from the application server in response to the uplink event, generating radio resource change allocation request information, and transmitting the generated radio resource change allocation request information to the radio network controller; If an acknowledgment corresponding to the radio resource change allocation request information is received, setting a default rate according to the maximum rate information and transmitting data to the application server; And when the data transmission is completed, transmitting data in response to a rate change according to an uplink event occurrence, comprising transmitting radio resource change request information including default rate information to the radio network controller. Can be.

The method may further include generating and transmitting the radio resource allocation request information including the preset default rate information in response to the access to the application server to the radio network controller.

The uplink event may be generated when the user inputs a command set corresponding to a button or a menu set to transmit arbitrary data to an application server while running a wireless web site, an application corresponding to one or more services, or a browser. uplink) may be one or more commands generated to perform an operation.

The maximum data rate information may be set by predefined tag and attribute information.

According to another embodiment of the present invention, a method for transmitting data at a maximum data rate corresponding to an uplink event in a user terminal equipped with an application and a browser corresponding to one or more data services, includes: Requesting radio resource allocation with corresponding default rate information; Determining whether the uplink event occurs, and generating uplink event occurrence information when the uplink event occurs; Receiving maximum rate information from an application server to which data is to be transmitted corresponding to the uplink event occurrence information; Generating radio resource change request information according to the maximum rate information; And transmitting the data at the maximum data rate information including transmitting the data to the application server at the maximum data rate information.

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

1 is a block diagram of a data transmission system capable of transmitting data by variably allocating a radio resource according to a transmission rate of an uplink event according to an embodiment of the present invention.

As shown in FIG. 1, the data transmission system 100 according to a transmission rate of an uplink event supports a user terminal 110, a node B 115, a radio network controller 120 (RNC), and a serving GPRS. Node 130, gateway GPRS support node 135, and application server 140. Hereinafter, the data transmission system 100 according to the transmission rate of the uplink event according to the present invention will be described with an emphasis on the WCDMA network. Of course, depending on the implementation method can be implemented in a CDMA, GSM network other than WCDMA, in this case, it is natural that each of the components described below may be different.

The user terminal 110 is a terminal capable of performing wireless Internet (for example, a video, an Internet TV, an email service, etc.) through a communication network, and is a conventional mobile phone, PDA, smart phone, and mobile broadcast system (MBS) phone. And the like.

The user terminal 110 is equipped with a browser that can access an application corresponding to one or more data addition services and the wireless Internet. As a result, the user terminal 110 generates an uplink event when a command corresponding to an uplink for accessing the wireless Internet or accessing a network and transmitting one or more data by driving any application and a browser is input from the user. Can be.

An "uplink event" herein refers to any data sent to the application server 140 while the user is running a wireless website, an application corresponding to one or more services (e.g., an online game, a messenger, etc.) or a browser. When a command to transmit is input from a user, it is defined as a set of commands (including messages) for performing an uplink operation.

That is, the user terminal 110 generates a PDP context request message including transmission rate information, service quality information, etc. to access the application server 140 of the external packet network to use the data service. Transmit to Node B 115.

For example, the user terminal 110 may transmit a PDP context activation request message for requesting connection to the application server 140 of the external packet network to the node B 115 in order to use the data service. The node B 115 may access a server providing data service of an external packet network through the serving GPRS support node 130 and the gateway GPRS support node 135 through the wireless network controller 120.

In addition, when the uplink event occurs, the user terminal 110 receives a maximum data rate information corresponding to the data to be uplinked from the application server 140 through the communication network and includes a maximum data rate information, a data size information to be transmitted, and the like. A change PDP context request message may be generated and transmitted to the Node B 115. Here, the maximum rate information is included in the web page corresponding to the uplink.

The node B 115 performs a wireless connection with the user terminal 110 and a wired / wireless connection function between the user terminal 110 and the wireless network controller 120.

The radio network controller 120 performs functions for radio resource management of the WCDMA system, manages the node B 115 in the radio access network, and manages the interface between the radio network controller 115 and other network elements. . In addition, the wireless network controller 115 has a direct link between the wireless network controller 115 is a node B 115 of the wireless subscriber network, a wireless network controller interface (not shown), the interface between the wireless network controller 120 is an AAL2 ATM link. Radio network controller (RNC) and Core Network (CN) interface may be configured as AAL2 / 5 ATM link.

The serving GPRS support node 135 (hereinafter referred to as "SGSN") tracks the location of the user terminal 110 and performs security functions and access control, session management functions corresponding to GPRS, authentication and charging functions, and the like. In addition, the SGSN 130 performs a function of transmitting packet data to the user terminal 110. That is, the SGSN 130 may allocate a radio network (RN) and a radio resource according to the quality of service information requested by the user terminal 110.

The gateway GPRS support node 135 (hereinafter referred to as "GGSN") is an IP-based node for processing high-speed packet data for packet data service of GPRS. The GGSN 135 is a serving node of an IP-based packet network that provides a high-speed packet data service for GPRS data services. The GGSN 135 provides mobility of packet data services and various data related protocol processing functions. GGSN 135 generally provides address assignment, domain address translation and maintenance functions, and the like. In addition, each port of the GGSN 135 may be connected to the server of the service provided by the mobile communication network.

The application server 140 runs a web site for providing one or more data services, and each web site is a tag and attribute information in which a maximum bit rate information differently set corresponding to each uplink event is predefined. It is set. Therefore, when the user terminal 110 requests an uplink of arbitrary data to the application server 140 through the communication network, the application server 140 transmits the maximum transmission rate information preset in accordance with the corresponding uplink through the communication network. And transmit to 110.

2 is a diagram illustrating a session establishment process in a WCDMA packet network according to an embodiment of the present invention.

In step 210, the user terminal 110 sends a PDP context request message including an access point name, transmission rate information, and quality of service (QoS) information of the application server 140 to which the user wants to connect. Through the wireless network controller 120 is transmitted to the SGSN (130). The user terminal 110 transmits an arbitrary message to the application server 140 via the node B 115 to transmit an arbitrary message to the application server 140, but hereinafter, unnecessary description is omitted. It will be described as. Here, the user terminal 110 may include quality of service (QoS) information corresponding to a transmission rate set as a default corresponding to a wireless Internet service to be connected.

For example, the user terminal 110 includes an address information format selected by the user terminal 110 by selecting whether to use a static address or a dynamic address in the activation PDP context request message as shown in FIG. 3. can do. In addition, the activation PDP context request message may include an access point name (APN) that includes routing information on a service by the user terminal 110 selecting a service to be connected to an external packet network.

Here, the parameters defined for allocating radio resources corresponding to the quality of service (QoS) information included in the PDP context request message may include traffic class, delivery order, and error SDU delivery (Delivery of erroneous service). Data Unit), Maximum SDU Size, Uplink / Downlink Maximum Bit Rate, Transfer Delay, Traffic Handling Priority, etc. may be included. .

In step 215, the SGSN 130 receives the activation PDP context request message from the user terminal 110 and transmits a create PDP context request message to the GGSN 135.

For example, the SGSN 130 extracts an access point name (APN) included in an activation PDP context request message, and thus, a radio network (RN) of a service corresponding to the access point name to which the user terminal 110 wants to access. Check whether there is traffic congestion, whether there are enough radio resources, etc. In addition, quality of service (QoS) information in the activation PDP context request message received from the user terminal 110 may be extracted, and a generated PDP context request message may be generated and transmitted to the GGSN 135.

For example, the SGSN 130 selects the GGSN 135 by extracting an APN corresponding to a service to be accessed from the user terminal 110 from the activation PDP context request message received from the user terminal 110. do. In addition, the SGSN 130 may allocate a radio network (RN) and radio resources with quality of service (QoS) information requested by the user terminal 110, generate a generated PDP context request message, and transmit the generated PDP context request message to the corresponding GGSN 135. have.

In operation 220, the GGSN 135 generates a PDP context and transmits a Create PDP Context Response message to the SGSN 120.

In operation 225, the SGSN 120 receives a Create PDP Context Response message from the GGSN 135 and transmits an Activate PDP Context Accept message to the user terminal 110.

In step 230, the user terminal 110 transmits a router solicitation message to the GGSN 135.

In step 235, the GGSN 135 transmits a Router Advertisement (RA) message to the user terminal 110.

Accordingly, the packet channel between the user terminal 110 and the application server 140 of the service to be used in the user terminal 110 is set. By using this, packet data transmission and reception between the user terminal 110 and the application server 140 is possible.

In the WCDMA packet network, a wireless network and a radio resource are allocated through the session establishment process as described above, so that packet data can be transmitted and received between the user terminal 110 and the application server 140.

3 is a flowchart illustrating a process of temporarily changing a data transmission rate corresponding to an uplink event of the user terminal 110 according to an exemplary embodiment of the present invention.

In operation 310, the user terminal 110 determines whether an uplink event has occurred. For example, when a user presses a preset button (not shown) to transmit arbitrary data to the application server 140, the mobile communication terminal 110 may correspondingly generate an uplink event. Here, since the user terminal 110 detects whether an uplink event occurs in response to a preset button is obvious to those skilled in the art, a detailed description thereof will be omitted.

If no uplink event has occurred, the user terminal 110 waits at step 310.

However, if an uplink event occurs, in step 315 the user terminal 110 requests transmission of the maximum rate information set corresponding to the uplink event to the application server 140 via the communication network. The application server 140 that has received the request for transmission of the maximum rate information from the user terminal 110 transmits the maximum rate information set in advance to the uplink event to the user terminal 110 through the communication network (step 320).

In operation 325, the user terminal 110 determines whether the maximum transmission rate information set corresponding to the uplink event is received from the application server 140.

If the maximum data rate information has not been received, the user terminal 110 does not transmit the radio resource change request information to the Node B 115. That is, the user terminal 110 waits at step 315.

However, if the maximum rate information corresponding to the uplink event is received, in step 330 the user terminal 110 transmits the change request information of the radio resource, including the received maximum rate information via the Node B 115 to the radio network controller ( 120).

In operation 335, the radio network controller 120 may change and reassign radio resources by using radio resource change request information received from the user terminal 110. In addition, the radio network controller 120 transmits the packet channel reconfiguration request information including the changed and reallocated radio resource information (eg, maximum data rate information, bandwidth information, data size information to be transmitted, etc.) to the SGSN 130. Can be. The SGSN 130 may reset the packet channel with the GGSN 135 in response to the packet channel reset request information received from the radio network controller 120.

As a result, the user terminal 110 changes the radio resources at the maximum transmission rate corresponding to the uplink event so that the user terminal 110 may transmit the data to be transmitted to the application server 140 in accordance with the maximum transmission rate (step 340). ).

In operation 345, the user terminal 110 determines whether all data to be transmitted to the application server has been transmitted according to the uplink event.

If all the data has not been transmitted, the user terminal 110 waits until the data transmission is completed in step 350.

However, if all data transmission is completed, the user terminal 110 transmits the radio resource change request information including the default transmission rate information to the node B 115. Hereinafter, since the radio network controller 120 changes the radio resource according to the default data rate information as in step 335, a description thereof will be omitted.

For example, when a user accesses a website corresponding to an arbitrary blog and uploads a photo file as an example, the user terminal 110 uses WCDMA as described above with reference to FIG. Set up a network session. In addition, when an upload event corresponding to the photo file transmission occurs in the user terminal 110, the user terminal 110 may be configured in advance in response to the upload event to the application server 140 that may access a website corresponding to a blog. Receiving the rate information, and transmits the radio resource reset request information, including the corresponding maximum rate information to the radio network controller 120. Then, the wireless network controller 120 may extract the maximum rate information from the radio resource reset request information to adjust the rate according to the uplink in accordance with the maximum rate information.

As a result, the user terminal 110 may transmit data to the application server 140 at the maximum data rate information.

For example, if an HTML tag corresponding to a file search such as an image has a format such as <input type = "file">, the application server 140 according to the present invention uses <input attribute information indicating transmission rate information. You can create a web document in the form of <input type = "file" rate = "384k"> by including it in the> tag. Here, the format of the tag and attribute information is only one example of the maximum rate information corresponding to the uplink event according to the present invention, and may be included in other formats. That is, the web site may include different rate information for each web page or for each event.

When the photo file transmission is completed, the user terminal 110 may transmit radio resource reset request information including default transmission rate information to the radio network controller 120. For this reason, the data transmission system 100 according to the present invention temporarily receives the maximum data rate information included in the predefined format from the application server 140 in response to the uplink event occurrence of the user terminal 110, The resource can be retransmitted (adjusted up to the maximum rate) to send the data. As a result, there is an advantage that can effectively use the limited radio resources.

4 is a block diagram of a user terminal according to an exemplary embodiment of the present invention.

As shown in FIG. 4, the user terminal 110 according to the present invention may include a data transceiver 410, an information analyzer 420, and an information generator 430. In addition, the user terminal 110 according to the present invention may further include a controller (not shown) that performs a function of controlling internal components.

The data transmission / reception unit 410 is responsible for data transmission and reception with the application server 140 of the external packet network through the communication network. For example, the data transceiver 410 may transmit the radio resource allocation request information or the radio resource change request information input from the information generator 430 to the radio network controller 120.

Also, when the uplink event occurrence information is received from the information analyzer 420 under the control of the controller, the data transceiver 410 may request the maximum transmission rate information corresponding to the uplink event from the application server 140.

In addition, the data transceiver 410 may transmit data to be transmitted to the application server 140 under the control of the controller.

The information analyzer 420 determines whether an uplink event that has already been set up by inputting a preset button (not shown) corresponding to an arbitrary data transmission to the application server 140 by the user generates an uplink event. If so, uplink event occurrence information, which is a control command to perform a series of functions for performing an uplink operation, may be generated.

The information generating unit 430 generates radio resource change request information including the maximum data rate information received through the data transmitting / receiving unit 410 in response to the uplink event occurrence information, and generates a radio network controller through the data transmitting / receiving unit 430. Transmit to 120. In addition, the information generating unit 430 may generate radio resource allocation request information including default transmission rate information corresponding to the application to be used by the user and the application server 140 to be connected, and transmit the generated information to the wireless network controller 120. have.

Although not shown in FIG. 4, the user terminal 110 according to the present invention includes a storage unit for storing default transmission rate information corresponding to each application or application server 140, maximum transmission rate information received from the application server 140, and the like. It may further include (not shown).

As described above, by providing a data transmission system and method for changing the transmission rate in accordance with the occurrence of an uplink event according to the present invention, at a different maximum transmission rate for each data attribute uplinked to the application or wireless web site corresponding to the data service There is an effect that can transmit data.

In addition, the present invention also has the effect of using the limited radio resources as efficiently as possible.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

Claims (10)

An application server including predefined maximum data rate information corresponding to each uplink event; A user terminal equipped with an application and a browser corresponding to one or more data services, and generating and transmitting radio resource setting request information including default transmission rate information corresponding to the application server to be connected; And And extracting the maximum rate information from the radio resource setting request information and changing and allocating a radio resource according to the maximum rate information. When the uplink event occurs corresponding to the data to be transmitted to the application server, the user terminal receives the maximum rate information, and generates and transmits radio resource change request information including the maximum rate information. Data transmission system that changes the transmission rate as it occurs. The method of claim 1, When the data transmission is completed, the user terminal transmits the radio resource setting request information including the default transmission rate information to the radio network controller. The data transmission system for changing the transmission rate according to an uplink event occurs. . The method of claim 1, The maximum rate information is set by predefined tag and attribute information, and the user terminal receives the tag and attribute information to recognize the maximum rate information corresponding to the uplink event. Data transmission system that changes the transmission rate according to the occurrence of an event. The method of claim 1, The uplink event may be generated when the user inputs a command set corresponding to a button or a menu set to transmit arbitrary data to an application server while running a wireless web site, an application corresponding to one or more services, or a browser. uplink) A data transmission system for changing a transmission rate according to an uplink event occurrence, characterized in that one or more commands generated to perform an operation. In a user terminal equipped with an application and a browser corresponding to one or more data services, An information analyzer configured to determine whether an uplink event has occurred and generate uplink event occurrence information; A data transmitting / receiving unit configured to receive maximum data rate information from an application server to transmit data in response to the uplink event occurrence information or to transmit the data to the application server; And And an information generator configured to generate radio resource allocation request information or radio resource change request information including default transmission rate information or the maximum transmission rate information corresponding to the application and the wireless Internet access. In the method of the user terminal of the data transmission system according to the transmission rate of the uplink event including a user terminal, a wireless network controller, an application server to transmit data at the maximum rate information corresponding to the uplink event-Here, the user terminal is Equipped with an application or browser corresponding to the data service Generating an uplink event; Receiving the maximum rate information from the application server in response to the uplink event, generating radio resource change allocation request information, and transmitting the generated radio resource change allocation request information to the radio network controller; When an acknowledgment corresponding to the radio resource change allocation request information is received, setting a default transmission rate in accordance with the maximum transmission rate information and transmitting data to the application server; And And when the data transmission is completed, transmitting the radio resource change request information including default rate information to the radio network controller. The method of claim 6, Generating radio resource allocation request information including default rate information preset in correspondence with the connection to the application server, and transmitting the radio resource allocation request information to the radio network controller. How to transfer. The method of claim 6, The uplink event may be generated when the user inputs a command set corresponding to a button or a menu set to transmit arbitrary data to an application server while running a wireless web site, an application corresponding to one or more services, or a browser. uplink) A method for transmitting data in response to a rate change caused by an uplink event occurrence, characterized in that one or more commands generated to perform an operation. The method of claim 6, The maximum rate information is a data transmission method corresponding to a rate change according to the occurrence of the uplink event is set by the predefined tag and attribute information. A method of transmitting data at a maximum data rate corresponding to an uplink event in a user terminal equipped with an application and a browser corresponding to at least one data service, Requesting radio resource allocation with preset default rate information corresponding to the application and the wireless Internet connection; Determining whether the uplink event occurs, and generating uplink event occurrence information when the uplink event occurs; Receiving maximum rate information from an application server to which data is to be transmitted corresponding to the uplink event occurrence information; Generating radio resource change request information according to the maximum rate information; And And transmitting the data at the maximum data rate information to the application server.

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