KR20140110732A - Method and apparatus for processing media traffic in mobile communication system - Google Patents

Abstract

The present invention relates to a method for processing media traffic in a media processing function (MPF) entity in a mobile communication system, the method comprising the steps of: receiving a message from a gateway having a traffic detection function (TDF) When an Internet Protocol (IP) Connectivity Access Network (IP-CAN) session is established between the network policy server and the media policy server, or when an application is detected in the gateway having the TDF, Installing a media policy, and updating the media policy based on a network status after the media policy is installed.

Description

[0001] METHOD AND APPARATUS FOR PROCESSING MEDIA TRAFFIC IN MOBILE COMMUNICATION SYSTEM [

The present invention relates to a method and apparatus for processing media traffic in a mobile communication system. In particular, the present invention relates to a method for adaptively processing media traffic based on network conditions in a mobile communication system.

In general, a 3rd Generation Partnership Project (3GPP) communication system is also called an evolved packet system (EPS) The EPS includes an evolved packet core (EPC) for connection to another wireless access network.

The policy and charging control structure of the EPC includes policy and charging enforcement functions (PCEFs) and traffic detection functions (TDFs) (TDF), and the PCEF and the TDF can be applied based on the subscriber policy.

In the EPC, a TDEF entity, which is an entity for controlling a subscriber policy for each application, or a PCEF (Application Detection (ADC)) having an Application Detection Control (ADC) Control: P-GW, hereinafter referred to as P-GW) entities are standardized.

The TDF entity or the P-GW entity detects application traffic and transmits information related to the detected application traffic to a policy and charging rules function (PCRF) server And the PCRF server transmits the subscriber policy for the detected application traffic to the TDF entity or the P-GW entity so that the TDF entity or the P-GW entity transmits traffic control for the application traffic detected for each application Functions such as gating, shaping, and redirection are performed.

Separately, a provider network is provided with media processing functions such as trans-coding and video pacing on media traffic based on feedback information transmitted from a user equipment (UE) Lt; / RTI > exists. The entity providing the media processing function exists between the user terminal and an origin server (or a content server) that provides media contents. The entity is provided with a transmission control protocol (TCP) And estimates the available transmission rate in the available mobile communication network based on the feedback information received from the user terminal. Then, the entity providing the media processing function changes the media traffic based on the predicted transmission rate, and then transmits the changed media traffic or controls the transmission rate of the media traffic.

Meanwhile, in recent years, there has been a rapid increase in mobile video traffic and a demand for improving the quality of experience (QoE) for the mobile video traffic is also increasing. Accordingly, there is a need for a new network structure that can support media processing functions and policies for the media processing functions.

Also, there is a need for a network structure capable of efficiently processing media by dynamically changing parameters for media processing based on dynamically changing network conditions.

In addition, there is a need for a function of processing media based on information related to a dynamically changing network situation, for example, congestion situation information of a base station or an available data rate for the traffic.

On the other hand, the above information is only presented as background information to help understand the present invention. No determination has been made as to whether any of the above content is applicable as prior art to the present invention, nor is any claim made.

An embodiment of the present invention proposes an apparatus and method for processing media traffic in a mobile communication system.

One embodiment of the present invention proposes an apparatus and method for adaptively processing media traffic based on network conditions in a mobile communication system.

In an embodiment of the present invention, when an Internet Protocol (IP) Connectivity Access Network (IP-CAN) session is established in a mobile communication system or when an application is detected, And a device and method for processing media traffic are proposed.

An embodiment of the present invention proposes an apparatus and method for processing media traffic by updating a media policy based on a network situation in a mobile communication system.

According to an aspect of the present invention, A method of processing media traffic in a media processing function (MPF) entity in a mobile communication system, the method comprising the steps of: providing a gateway having a traffic detection function (TDF) When an Internet Protocol (IP) Connectivity Access Network (IP-CAN) session is established between policy servers, or when an application is detected in a gateway having the TDF, And updating the media policy based on a network status after the media policy is installed.

According to another aspect of the present invention, A method for processing media traffic in a media policy server in a mobile communication system, the method comprising the steps of: receiving an Internet Protocol (IP) protocol between a media policy server and a gateway having a traffic detection function (TDF) ) Media processing function (MPF) entity when an IP-Connectivity Access Network (IP-CAN) session is established, or when an application is detected in a gateway having the TDF, Providing the media policy to the MPF entity based on the network status after providing the media policy; and providing the updated media policy to the MPF entity based on the network status.

According to another aspect of the present invention, there is provided an apparatus comprising: An Internet protocol (IP) protocol between a gateway having a traffic detection function (TDF) and a media policy server in a media processing function (MPF) entity in a mobile communication system, When an IP-Connectivity Access Network (IP-CAN) session is established or an application is detected in the gateway having the TDF, a media policy is installed, and after the media policy is installed, And a controller for updating the media policy based on the status.

Another apparatus according to another aspect of the present invention includes: 1. A media policy server in a mobile communication system, comprising: an Internet Protocol (IP) Connectivity Access Network between a media policy server and a gateway having a traffic detection function (TDF) A media policy is provided to a Media Processing Function (MPF) entity when an IP-CAN session is established or when an application is detected at a gateway having the TDF, And providing a media policy updated to the MPF entity based on a network situation.

Other aspects, benefits and key features of the present invention will become apparent to those skilled in the art from the following detailed description, which is set forth in the accompanying drawings and which discloses various embodiments of the invention.

An embodiment of the present invention has an effect of enabling media traffic to be adaptively processed in a network environment in a mobile communication system.

In addition, an embodiment of the present invention enables media traffic to be processed based on a provider policy in a mobile communication system, thereby improving quality of experience (QoE) of a user terminal And the like.

In addition, an embodiment of the present invention has an effect of enabling a business policy decision as to whether or not a media processing function can be applied to media traffic detected for each user terminal or application.

Further aspects, features and advantages of the present invention as set forth above in connection with certain preferred embodiments thereof will become more apparent from the following description, taken in conjunction with the accompanying drawings, in which:
FIG. 1 schematically illustrates a structure of a mobile communication system according to an embodiment of the present invention; FIG.
FIG. 2 is a view schematically showing a structure of a mobile communication system according to a first embodiment of the present invention, FIG.
3 is a diagram schematically illustrating a procedure for setting up an IP-CAN session in the mobile communication system according to the first embodiment of the present invention.
4 is a diagram schematically illustrating a procedure for installing a media policy in the mobile communication system according to the first embodiment of the present invention.
5 is a diagram schematically illustrating a procedure of updating a media policy according to a network status change in the mobile communication system according to the first embodiment of the present invention.
6 is a diagram schematically illustrating a procedure for reporting a media processing use record when a session is released in the mobile communication system according to the first embodiment of the present invention.
7 is a view schematically showing the structure of a mobile communication system according to a second embodiment of the present invention,
8 is a diagram schematically illustrating a procedure for setting up an IP-CAN session in the mobile communication system according to the second embodiment of the present invention.
9 is a diagram schematically illustrating a procedure for installing a media policy in a mobile communication system according to a second embodiment of the present invention.
10 is a diagram schematically illustrating a procedure for updating a media policy according to a network status change in a mobile communication system according to a second embodiment of the present invention.
11 is a diagram schematically illustrating a procedure for reporting a media processing use record when a session is released in a mobile communication system according to a second embodiment of the present invention.
12 schematically shows a structure of a mobile communication system according to a third embodiment of the present invention,
FIG. 13 is a diagram schematically illustrating a procedure of installing a media policy in a mobile communication system according to a third embodiment of the present invention; FIG.
FIG. 14 is a diagram schematically illustrating a procedure for updating a media policy according to a network status change in a mobile communication system according to a third embodiment of the present invention; FIG.
15 is a view schematically showing a structure of a mobile communication system according to a fourth embodiment of the present invention,
16 is a view schematically showing a procedure of installing a media policy in a mobile communication system according to a fourth embodiment of the present invention;
17 is a diagram schematically illustrating a procedure for updating a media policy according to a network status change in a mobile communication system according to a fourth embodiment of the present invention;
18 is a view schematically showing a procedure of reporting a media processing use record when a session is released in a mobile communication system according to a fourth embodiment of the present invention;
19 is a view schematically showing an internal structure of a user terminal in a mobile communication system according to an embodiment of the present invention;
20 schematically illustrates an internal structure of a device P in a mobile communication system according to an embodiment of the present invention,
FIG. 21 is a diagram schematically showing an internal structure of a device G in a mobile communication system according to an embodiment of the present invention,
22 schematically illustrates an internal structure of a device M in a mobile communication system according to an embodiment of the present invention,
23 is a view schematically illustrating an internal structure of a content server in a mobile communication system according to an embodiment of the present invention.
Throughout the drawings, it should be noted that like reference numerals are used to illustrate the same or similar elements and features and structures.

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 of the present invention, 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. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The present invention is capable of various modifications and various embodiments, and specific embodiments thereof will be described in detail with reference to the drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Also, terms including ordinal numbers such as first, second, etc. may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

Also, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Furthermore, in the embodiments of the present invention, all terms used herein, including technical or scientific terms, unless otherwise defined, are intended to be inclusive in a manner that is generally understood by those of ordinary skill in the art to which this invention belongs. Have the same meaning. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and, unless explicitly defined in the embodiments of the present invention, are intended to mean ideal or overly formal .

An embodiment of the present invention proposes an apparatus and method for processing media traffic in a mobile communication system.

One embodiment of the present invention proposes an apparatus and method for adaptively processing media traffic based on network conditions in a mobile communication system.

In an embodiment of the present invention, when an Internet Protocol (IP) Connectivity Access Network (IP-CAN) session is established in a mobile communication system or when an application is detected, And a device and method for processing media traffic are proposed.

An embodiment of the present invention proposes an apparatus and method for processing media traffic by updating a media policy based on a network situation in a mobile communication system.

Meanwhile, the method and apparatus proposed in various embodiments of the present invention may be applied to a long-term evolution (LTE) mobile communication system and a long term evolution-advanced (LTE-A (LTE-A) mobile communication system and a high-speed downlink packet access (HSDPA) mobile communication system A high speed uplink packet access (HSUPA) mobile communication system and a 3rd generation project partnership 2 (3GPP2, hereinafter referred to as 3GPP2) (HRPD) mobile communication system of 3GPP2 and a high rate packet data (HRPD) mobile communication system of 3GPP2 (Wideband Code Division Multiple Access (WCDMA) (WCDMA) mobile communication system, a Code Division Multiple Access (CDMA) mobile communication system of 3GPP2, an IEEE (Institute of Electrical and Electronics Engineers) an IEEE 802.16m communication system, an evolved packet system (EPS), a mobile Internet protocol (hereinafter referred to as " EPS "), : Mobile IP (hereinafter referred to as " Mobile IP ") system, and the like.

One embodiment of the present invention proposes a media processing function (MPF) entity which is a new network entity and manages the MPF entity, the policy and the charging rule function (PCRF) server according to an embodiment of the present invention. Here, the media processing includes at least one of a cache and a media adaptation, and the media adaptation may include transcoding, trans-rating, and video pacing).

A process of processing media traffic in a network structure proposed in an embodiment of the present invention will be briefly described below.

1) A media policy is installed when an Internet Protocol-Connectivity Access Network (IP-CAN) session is established (IP-CAN Session Establishment). The media policy includes a media processing rule applicable based on a user terminal or contents. The media policy includes, for example, a media processing information attribute-value-pair (AVP) -Value-Pair, hereinafter referred to as " AVP ").

2) When a video transmission session, for example, a Transmission Control Protocol (TCP) session is created, a media policy is controlled for each application.

3) Media policies are updated dynamically based on changes in network conditions.

4) At the end of the session, the media handling history is reported.

Hereinafter, a structure of a communication system according to an embodiment of the present invention will be described with reference to FIG.

1 is a diagram schematically showing a structure of a communication system according to an embodiment of the present invention.

1, the mobile communication system includes a user equipment (UE) 101, a media policy server (hereinafter referred to as 'P' or 'device P') 103, , A gateway function with TDF entity 105 (hereinafter referred to as 'G' or 'device G') having a traffic detection function (TDF) A media processing function entity 107 (hereinafter, referred to as 'M' or 'device M'), and a content server 109. The G 105 is connected to the mobile network 110.

The P 103 is a policy and charging rules function (PCRF) in the policy and charging control (PCC) structure of the 3GPP mobile communication system (PCRF) server, and controls policies related to charging. The G 105 is a PCEF (Application Detection Control (P-GW) (ADC) having an Application Detection Control (ADC) function in the PCC structure of the 3GPP mobile system, (Hereinafter, referred to as 'P-GW') entity or a TDF entity, detects media traffic, and transmits the detected media traffic to the M 107.

The M 107 is located near the Evolved Packet Core (EPC) between the G 105 and the content server 109, for example, caching, And performs media processing functions such as media adaptation and the like. Here, the caching means that media traffic is temporarily stored in order to save a transition cost on the core network side, and the media adaptation is a process of transrating the media traffic to be transmitted to the user terminal Trans-rating " and " transcoding " are performed.

In addition, the M 107 performs a TCP proxy function to split the TCP connection between the user terminal 101 and the content server 109 to optimize the transmission of the media traffic. The content server 109 is also called an origin server and provides media content.

The G 105 and the G 107 interact with each other via the interface a and the G 105 and the M 107 interact with each other via the interface b and the M 107 and the P (103) interact via interface c.

An attribute-value-pair (AVP) used in an embodiment of the present invention will be described.

Table 1 shows AVPs used in one embodiment of the present invention in the form of "Name of AVP", "Direction", "Description", "When performed" .

In the Table 1, the Direction of the Media Processing Provisioning Info AVP indicates the direction from the P 103 to the G 105, that is, the Media Processing Provisioning Info AVP is transmitted from the P 103 to the G 105, Lt; / RTI > When the G 105 detects an application to which the G 105 has subscribed, the Media Processing Provisioning Info AVP determines whether the G 105 transmits information related to the detected application to the M 107 Is used. That is, when the P-GW entity having the ADC function or the P-GW entity detects the subscribed application, the P-GW entity having the ADC function or TDF transmits the detected session to the media processing It is used to determine whether or not to be forwarded to the functional entity. Also, " When performed " of the Media Processing Provisioning Info AVP indicates that the Media Processing Provisioning Info AVP can be executed upon establishing an IP-CAN session.

In the above Table 1, the Direction of the Detected Media Info AVP indicates the direction from the G 105 to the P 103, i.e., the Detected Media Info AVP is transmitted from the G 105 to the P 103 do. The Detected Media Info AVP is used by the PCRF server to determine a media policy using a database for a given subscriber and / or detected application. For example, the Detected Media Info AVP may include a Subscriber Policy Repository (SPR) for the given subscriber and / or the detected application, Or a User Data Record (UDR) (UDR)) to determine the media policy. When performed in the Detected Media Info AVP indicates that the Detected Media Info AVP can be executed upon application start detection.

In Table 1, the Direction of the Media Processing Info AVP indicates the direction from the P 103 to the M 107, that is, the Media Processing Info AVP is transmitted from the P 103 to the M 107 . The Media Processing Info AVP is used for media processing functions to perform one type of media processing. The Media Processing Info AVP includes the media processing action and the required parameters of the Media Processing Info AVP, in particular a Media Processing Type AVP indicating what type of media processing is required.

Here, the value of the sub AVP, that is, the media processing type may be one of the following:

- MP_ACTION_CACHE: cache control

- MP_ACTION_TRANSCODING: trans-coding / trans-rating

- MP_ACTION_PACING: Video pacing

- MP_ACTION_TPO: TCP parameter optimization

Also, when the Media Processing Info AVP is performed, it indicates that the Media Processing Info AVP can be executed in response to the application start detection (after application start detection).

In Table 1, the Direction of the Network Status Change AVP indicates the direction from the P 103 to the M 107, that is, the Network Status Change AVP is transmitted from the P 103 to the M 107 . The Network Status Change AVP is used for the media processing function to adjust the parameters of the media processing function. A radio access network (RAN), such as congestion information, available bandwidth or guaranteed bandwidth, and an evolved NodeB Identifier (eNB ID) ) Node identifier. The Network Status Change AVP is used by the media processing function to adjust parameters of the media processing function. And the example functions of the above Network Status Change AVP are listed as follows:

- When the transcoding is performed, the frame rate, resolution,

- When faceting is performed, the transmission rate

The Network Status Change AVP when the Network Status Change AVP indicates that the detection of the network status change can be executed at the time when the detection of the network status change is known to the PCRF server.

In the Table 1, the Direction of the Media Processing Usage Record AVP indicates the direction from the M 107 to the P 103. That is, the Media Processing Usage Record AVP indicates the direction from the M 107 to the P 103, Lt; / RTI > The Media Processing Usage Record AVP includes usage records and statistical information collected by a media processing function (MPF) entity for a given session. When the Media Processing Usage Record AVP has been performed, it indicates that the Media Processing Usage Record AVP can be executed upon release of the session.

Next, procedures for processing media traffic will be described according to an embodiment of the present invention.

1) Install media policies for users and applications

When the IP-CAN Session Establishment (IP-CAN Session Establishment) is notified to the PCRF server, the PCRF server determines PCC and / or ADC rules (Rule) based on the subscription policy information, And determines the provisioning information (Media Processing Provisioning Information). The media processing provisioning information includes information such as information indicating whether or not media processing is permitted and information indicating which of the detected applications is applied to the media processing and the like and the detected application includes a TDF- Lt; / RTI >

When the MPF entity is located separately from the P-GW or the TDF entity, the PCRF server determines the MPF entity to which the media policy is to be applied.

After the media policy determination and the selection of the MPF entity, the PCRF server can install the media processing provisioning information in the MPF entity.

The Media Processing Provisioning Info AVP indicating the media processing provisioning information may include examples as shown in Table 2 below.

In Table 2, examples of Media Processing Provisioning Info AVP are described in the form of Name of AVP, Type, Description, and Example.

In Table 2, the Type of the Media Processing Allowed AVP is Boolean, and the Media Processing Allowed AVP indicates that the user terminal is allowed to use the media processing. The example of the Media Processing Allowed AVP may be 'allowed / disallowed'.

In Table 2, the Type of the Selected MPF ID AVP is an octet string, and the Selected MPF ID AVP represents a unique identifier for the selected media processing function.

In Table 2, the type of the List of Subscribed Application Identifiers AVP is a list of Octet Strings, and the List of Subscribed Application Identifiers AVP reports the start and end of the detected traffic Is used. The List of Subscribed Application Identifiers AVP indicates a list of application identifiers to which the user terminal subscribes for media processing or a configuration of an operator for applications to be provided to a user terminal that is requested, May be used to report the beginning and end of the detected traffic. The example of the List of Subscribed Application Identifiers AVP may be an application such as a list of application identifiers in which each application identifier refers to the applications, for example, a value of the application identifier list may be a list of URLs (Uniform Resource Locators) have.

2) Application-specific media policy control

When the device G, for example, the P-GW entity or the TDF entity detects an application subscribed thereto, the device G extracts the media information for the subscribed application from the application header information.

Here, the media information may be, for example, client player information on which client capability can be deduced, and caching of detected media information or content to be delivered through a session And the media control information such as the validity time of the content. The device G reports the detected media information to the device P. [

Examples of Detected Media Info AVPs indicating the detected media information may be shown in Table 3 below.

In Table 3, examples of the Detected Media Info AVP are described in the form of Name of AVP, Type, Description, and Example.

In Table 3, the type of the Client Player Information AVP is an octet string, and the Client Player Information AVP is capable of deriving the capabilities of the client player. The Client Player Information AVP includes a name of the operating system, a version thereof, a browser, The name of the player may be included. Also, the Client Player Information AVP can be obtained from a Hyper Text Transfer Protocol (HTTP) request header information. Here, the Client Player Information AVP example can be Android 2.3 and Mozilla.

In Table 3, an example of the Media Information AVP is an octet string, and the Media Information AVP includes a file size, a media format, an audio / video codec, an encoding rate, a resolution And at least one of duration. The example of the Media Information AVP may be a file size of 30 MB, a media format of flv, a video / audio codec of H.264, an encoding rate of 300 Kbps, a resolution of 240 p, and a duration of 10 min.

In Table 3, the type of the Cache-Allowed AVP is non-empty, and the Cache-Allowed AVP indicates whether the content of the detected session is allowed to be cached. The Cache-Allowed AVP Example may be True or False.

In Table 3, the type of the Cache-Validation-Time AVP is time, and the Cache-Validation-Time AVP includes an effective duration since the content is downloaded. In addition, the Cache-Validation-Time AVP may include an absolute time at which the content is valid. Here, after caching of the time indicated by the Cache-Validation-Time AVP, the cached content should not be delivered outside the media processing function. Here, the example of the Cache-Validation-Time AVP can be 1 day / 1 week or 2013-01-23 23:59:59.

After receiving the report of the session detected from the device G, the device P determines whether the detected session requires the identifier of the media processing and media processing function and what type of media processing action should be processed . The media processing action may include an action of 'the content of the detected session may be cached', an action of 'the cached content of the detected session may be delivered', a 'transcoding of the content of the detected session' And a 'TCP Parameter Optimization' action, as well as an 'action to adapt the transmission rate of the detected session' and an 'optimize TCP parameter' action.

After determining the parameters of the media processing policy and the media processing policy, the device P transmits media processing information to the device M.

Examples of the Media Processing Info AVP indicating the media processing information may be shown in Table 4 below.

In Table 4, examples of the Media Processing Info AVP are described in the form of Name of AVP, Type, Description, and Example.

In Table 4, the type of the Media Processing Indicator AVP is non-type, and the Media Processing Indicator AVP indicates whether the detected session requires media processing. If the Media Processing Indicator AVP exists, the P-GW entity having the ADC function or the TDF must forward traffic to the selected media processing function. Here, the example of the Media Processing Indicator AVP may be True or False.

In Table 4, the type of the Selected MPF ID AVP is an octet string type, and the Selected MPF ID AVP indicates an identifier of a selected media processing function to be forwarded by the P-GW entity having the ADC function or the TDF. Here, the example of the Selected MPF ID AVP may be an IP address or a domain name.

In Table 4, the type of the Application Instance Identifier AVP is an octet string, and the Application Instance Identifier AVP is a P-GW having an ADC function in order to allow correlation of a specific service data flow description of an application start event and an application stop event. Represents an identifier assigned by an entity. Here, the Example of the Application Instance Identifier AVP may be Detected-youtube-session-123.

In Table 4, the type of the Media Processing Action AVP is a compound, and the Media Processing Action AVP includes a media processing action and required parameters. In addition, the Media Processing Action AVP must include a Media Processing Type AVP indicating which type of media processing is required. The value of sub AVP (Media Processing Type) may be either MP_ACTION_CACHE indicating cache control, MP_ACTION_TRANSCODING indicating transcoding / trans-rating, MP_ACTION_PACING indicating video pacing, and MP_ACTION_TPO indicating TCP parameter optimization .

3) Update media policy according to change of network situation

If the network status changes based on RAN status such as congestion occurrence or congestion change, bandwidth change used for a given communication connection, the network status information may be stored in the device G or in an embodiment of the present invention Is notified to a network entity that is not included in the mobile communication system structure.

When the device G is informed that the network status has been changed, the device G reports network status change information indicating that the network status has been changed to the device P, for example, the PCRF server. The network status information includes congestion occurrence or congestion level, useful bandwidth information, or an identifier of the RAN node, eNB ID, for example.

Examples of the Network Status Change AVP indicating the network status information are shown in Table 5 below.

Table 5 shows examples of the Network Status Change AVP in the form of Name of AVP, Type, Description, and Example.

In Table 5, the type of the Congestion Info AVP is an octet string, and the Congestion Info AVP indicates collision information. Here, the example of the Congestion Info AVP may be '1,2,3'.

In Table 5, the type of the available bandwidth AVP is an octet string, and the available bandwidth AVP indicates an available bandwidth.

In Table 5, the type of the eNB Identifier AVP is an octet string, and the eNB Identifier AVP indicates a globally unique identifier of the eNB to which the user terminal is connected.

On the other hand, when receiving the network status information, the PCRF server re-determines a media policy and includes a frame rate, a resolution, a frame-dropping rate, a transmission rate, or TCP parameters Such as a media transcoding parameter, to update the media processing information.

When the device P (PCRF server) decides to change the media processing information, the device P (PCRF server) transmits the updated media processing information to the device M, for example, the MPF entity.

4) Media Processing Usage Record Reporting

While a given session is maintained, device M collects session usage information and media usage usage information as well as traffic usage information. In addition, the device M reports the collected information, that is, media processing use records, to the device P when the given session ends.

Examples of Media Processing Usage Record AVPs representing the media processing use records can be shown in Table 6 below. In Table 6, examples of the Media Processing Usage Record AVP are described in the form of Name of AVP, Type, Description, and Example.

In Table 6, the type of the Session-Information AVP is an octet string, and the Session-Information AVP includes session information, origin server information, a source address, a destination address, and a port port. Here, the example of the Session-Information AVP may be '1, 2, 3'.

In Table 6, the type of the Media-Processing-Usage-Information AVP is an octet string, and the Media-Processing-Usage-Information AVP includes the type of the media processing action and the parameters of the media processing action.

In Table 6, the type of the Traffic-Usage-Information AVP is an octet string, and the Traffic-Usage-Information AVP includes an octet count transmitted to the user terminal.

Hereinafter, a media traffic processing method and apparatus proposed by the present invention will be described with reference to the first to fourth embodiments of the present invention.

2 is a view schematically showing a structure of a mobile communication system according to a first embodiment of the present invention.

2, the mobile communication system includes a user terminal 201, P 203, G 205, M 207 and a content server 209. The G 205 is connected to the mobile network 210. The functions of the respective entities constituting the mobile communication system are similar to those described with reference to FIG. 1, and a detailed description thereof will be omitted here.

The P 203 and the G 205 interact with each other via the interface a, and the P 203 and the G 205 are connected to each other via the interface a. M 207 interact with each other via interface c.

2, the structure of the mobile communication system according to the first embodiment of the present invention is described. Next, with reference to FIG. 3, a procedure for establishing an IP-CAN session in the mobile communication system according to the first embodiment of the present invention will be described. Will be described.

3 is a diagram illustrating a procedure for establishing an IP-CAN session in the mobile communication system according to the first embodiment of the present invention.

Referring to FIG. 3, the mobile communication system includes a user terminal 301, a G 303, an M 305, a P 307, and a content server 309.

The user terminal 301 transmits an establishment IP-CAN Bearer Request (hereinafter, referred to as 'Establishment IP-CAN Bearer Request') requesting establishment of an IP-CAN bearer to the G 303 connected to the mobile network 310 CAN Bearer Request message from the user terminal 301. The G 303 transmits the Establishment IP-CAN Bearer Request message to the user terminal 301 through the IP-CAN session CAN Session Establishment (hereinafter referred to as " Indication of IP-CAN Session Establishment ") indicating that the IP-CAN session is established as the IP-CAN session is established Message to the P 307. In step 314,

3, the P 307 selects the MPF entity and then determines the PCC rule and / or the ADC rule and the media policy. However, the P 307 selects the MPF entity Of course, the procedure may be performed after determining the PCC and / or ADC rules and media policy. It is also assumed that the media policy includes information on the media processing functions Cache Control, Media Transcoding, Media Pacing, and TCP Parameter Optimization.

3, the procedure for selecting the MPF entity and then determining the PCC rule and / or the ADC rule and the media policy has been described as an example. However, the procedure for selecting the MPF entity is not limited to the PCC and / It may be performed after the determination of < / RTI > It is also assumed that the media policy includes information on the media processing functions Cache Control, Media Transcoding, Media Pacing, and TCP Parameter Optimization.

The P 307 then establishes an MPF session with the previously selected M 305 in step 322. In step 322, the P 307 transmits a media policy to the M 305 in step 324, CAN Session Establishment (Acknowledge IP-CAN Session Establishment) message confirming that the IP-CAN session has been established with the G 303 in step 326. In step 326, ) The media policy includes, for example, Media Processing Provisioning Information AVP.

The G 303 receives the Acknowledge IP-CAN Session Establishment message from the P 307 and establishes an IP-CAN bearer indicating that an IP-CAN bearer has been established in response to the Establishment IP-CAN Bearer Request message (Hereinafter, referred to as 'Establishment IP-CAN Bearer Response') message to the user terminal 301. (Step 328). Here, the Establishment IP-CAN Bearer Response message is a response message to the Establishment IP-CAN Bearer Request message.

Meanwhile, although FIG. 3 shows a procedure for setting up an IP-CAN session in the mobile communication system according to the first embodiment of the present invention, various modifications may be made to FIG. As an example, although successive steps are shown in FIG. 3, it is understood that the steps described in FIG. 3 may overlap, occur in parallel, occur in different orders, or occur multiple times.

3, a procedure for establishing an IP-CAN session in the mobile communication system according to the first embodiment of the present invention is described. Next, referring to FIG. 4, in the mobile communication system according to the first embodiment of the present invention, The procedure for installing the policy will be described.

4 is a diagram illustrating a procedure for installing a media policy in the mobile communication system according to the first embodiment of the present invention.

Referring to FIG. 4, the mobile communication system includes a user terminal 401, G 403, M 405, P 407, and a content server 409.

When the G 403 connected to the mobile network 410 detects the application, the P 407 transmits an indication of Application Detection Start (hereinafter, referred to as' Indication of Application Detection Start message is transmitted in step 414. The Indication of Application Detection Start message includes detected application information that is information on the detected application, For example, it can be a Detected Media Info AVP.

The P 407 receives the Indication of Application Detection Start message from the G 403 and selects the MPF entity or the M 405 in step 416. The media policy is determined in step 416. In step 418, 4), the P (407) determines PCC rules and / or ADC rules based on the subscription policy information before determining the media policy.

In step 420, the P 407 establishes an MPF session with the previously selected M 305. In step 420, the P 407 transmits a media policy including a media policy to the M 405, Hereinafter referred to as 'Media Policy') message. The P 407 transmits the media policy to the M 405 (step 422). The M (405) having received the Media Policy message from the P (407) installs the media policy included in the Media Policy message. The P 407 transmits an Application Detection Start Ack message to the G 403 to confirm the start of detection of the application. Step 424) Here, the media policy includes an AVP (Media Processing Provisioning Information), for example.

Meanwhile, although FIG. 4 illustrates a procedure for installing a media policy in the mobile communication system according to the first embodiment of the present invention, various modifications may be made to FIG. As an example, although successive steps are shown in FIG. 4, it is understood that the steps described in FIG. 4 may overlap, occur in parallel, occur in different orders, or occur multiple times.

4, a procedure of installing a media policy in the mobile communication system according to the first embodiment of the present invention has been described. Next, referring to FIG. 5, in the mobile communication system according to the first embodiment of the present invention, The procedure for updating the media policy will be described.

5 is a diagram illustrating a procedure for updating a media policy according to a network status change in the mobile communication system according to the first embodiment of the present invention.

5, the mobile communication system includes a user terminal 501, G 503, M 505, P 507, and a content server 509.

When the G 503 connected to the mobile network 510 detects that the network status has been changed in step 512, the G 503 transmits a Notification of Network Status Change Status change message to the P 507. In step 514, the Notification of Network Status Change message includes network status information, for example, Network Status Change AVP.

The P 507 receives the Notification of Network Status Change message from the G 503 and determines to change the pre-installed media policy, and in step 516, the media processing action and the requested media processing action And updates the media processing information including the parameters. In addition, the P 507 transmits a Media Policy Change Request (hereinafter referred to as 'Media Policy Change Request') requesting the M 505 to change the installed media policy. In step 518, the Media Policy Change Request message includes an updated media policy.

The M 505 receives the Media Policy Change Request message from the P 507, updates the installed media policy based on the media processing information included in the Media Policy Change Request message, The P 507 transmits a Media Policy Change Confirm message to the P 507 to confirm that the M 505 has been received from the M 505. In step 520, And transmits an Ack message to the G 503 to confirm that the network status has changed in response to the Notification of Network Status Change message.

Meanwhile, although FIG. 5 illustrates a procedure for updating a media policy according to a network status change in the mobile communication system according to the first embodiment of the present invention, various modifications may be made to FIG. As an example, although successive steps are shown in FIG. 5, it is understood that the steps described in FIG. 5 may overlap, occur in parallel, occur in different orders, or occur multiple times.

FIG. 5 illustrates a procedure for updating a media policy according to a network status change in the mobile communication system according to the first embodiment of the present invention. Referring to FIG. 6, A procedure for reporting the media processing use record when the session is released from the system will be described.

6 is a diagram illustrating a procedure for reporting a media processing use record when a session is released in the mobile communication system according to the first embodiment of the present invention.

Referring to FIG. 6, the mobile communication system includes a user terminal 601, G 603, M 605, P 607, and a content server 609. Here, the G (603) is connected to the mobile network (610).

When the M 605 detects that the preset session is released, the M 605 transmits a Session Release Indication (hereinafter referred to as 'Session Release Indication') message indicating that the session is released to the P 607 In step 614, the Session Release Indication message includes a Media Processing Usage Record AVP. The P 607 receives the Session Release Indication message from the M 605 and transmits an Ack message to the M 605 to confirm that the predetermined session has been released.

Meanwhile, although FIG. 6 shows a procedure for reporting a media processing use record when a session is released in the mobile communication system according to the first embodiment of the present invention, various modifications may be made to FIG. As an example, although successive steps are shown in FIG. 6, it is understood that the steps described in FIG. 6 may overlap, occur in parallel, occur in different orders, or occur multiple times.

6, a procedure for reporting a media processing use record upon termination of a session in the mobile communication system according to the first exemplary embodiment of the present invention has been described. Next, referring to FIG. 7, The system structure will now be described.

FIG. 7 is a diagram schematically illustrating a structure of a mobile communication system according to a second embodiment of the present invention.

Referring to FIG. 7, the mobile communication system includes a user terminal 701, P 703, G, M 705, and a content server 709. The device G and the device M are located together, and the G, M 705 is connected to the mobile network 710. Also, the P 703 and the G and M 705 mutually operate through the interface a.

FIG. 7 illustrates a structure of a mobile communication system according to a second embodiment of the present invention. Referring to FIG. 8, a procedure for establishing an IP-CAN session in the mobile communication system according to the second embodiment of the present invention Will be described.

8 is a diagram illustrating a procedure for setting up an IP-CAN session in the mobile communication system according to the second embodiment of the present invention.

Referring to FIG. 8, the mobile communication system includes a user terminal 801, G, M 803, P 807, and a content server 809.

The user terminal 801 transmits an Establishment IP-CAN Bearer Request message requesting establishment of an IP-CAN bearer to the G, M 803 connected to the mobile network 810. In step 812, CAN session establishment message indicating that the IP-CAN session is established when it receives an establishment IP-CAN Bearer Request message from the user terminal 801 and detects that the IP-CAN session has been established, To the P (807). (Step 814)

The P 807 receives the Indication of IP-CAN Session Establishment message from the G, M 803 and determines PCC rules and / or ADC rules based on the subscription policy information (step 816) (Step 818). The P 807 then transmits an Acknowledge IP-CAN Session Establishment message to the G, M 803 to confirm that the IP-CAN session has been established. For example, Media Processing Provisioning Information (AVP).

The G, M 803 receives the Acknowledge IP-CAN Session Establishment message from the P 807, and establishes an IP-CAN bearer in response to the Establishment IP-CAN Bearer Request message. And transmits a CAN Bearer Response message to the user terminal 801 (Step 822)

8 illustrates a procedure for establishing an IP-CAN session in the mobile communication system according to the second embodiment of the present invention, various modifications may be made to FIG. As an example, although consecutive steps are shown in FIG. 8, it is understood that the steps described in FIG. 8 may overlap, occur in parallel, occur in different orders, or occur multiple times.

8, a procedure for establishing an IP-CAN session in the mobile communication system according to the second embodiment of the present invention is described. Next, referring to FIG. 9, in the mobile communication system according to the second embodiment of the present invention, The procedure for installing the policy will be described.

9 is a diagram illustrating a procedure for installing a media policy in the mobile communication system according to the second embodiment of the present invention.

9, the mobile communication system includes a user terminal 901, G, M 903, P 907, and a content server 909. Here, the G and M 903 are connected to the mobile network 910.

The G, M 903 transmits an Indication of Application Detection Start message to the P 907 indicating that the application has been detected in step 912. In step 914, The message includes detected application information, which is application information for the detected application, and the detected application information may be, for example, a Detected Media Info AVP.

The P 907 receives the Indication of Application Detection Start message from the G, M 903, selects the MPF entity, and then determines the media policy in step 916. (Step 918), the P 907 transmits a Media Policy (hereinafter, referred to as 'Media Policy') message including the determined media policy to the G, M 903. The P (907) transmits the media policy to the G, M (903) (step 920). The G, M 903 receives a Media Policy message from the P 907, and installs the media policy included in the Media Policy message. After installing the media policy, the G, M 903 transmits an Ack message to the P 907 to confirm that the media policy is installed in step 922. Here, the media policy includes an AVP (Media Processing Provisioning Information), for example.

Although FIG. 9 illustrates a procedure for installing a media policy in the mobile communication system according to the second embodiment of the present invention, various modifications may be made to FIG. As an example, although successive steps are shown in FIG. 9, it is understood that the steps described in FIG. 9 may overlap, occur in parallel, occur in different orders, or occur multiple times.

9, a procedure for installing a media policy in the mobile communication system according to the second embodiment of the present invention has been described. Next, referring to FIG. 10, in the mobile communication system according to the second embodiment of the present invention, The procedure for updating the media policy will be described.

10 is a diagram illustrating a procedure for updating a media policy according to a network status change in a mobile communication system according to a second embodiment of the present invention.

Referring to FIG. 10, the mobile communication system includes a user terminal 1001, G, M 1003, P 1007, and a content server 1009. The G, M 1003 is connected to the mobile network 1010.

Upon detecting that the network status has been changed (step 512), the G, M 1003 transmits a Notification of Network Status Change message to the P 1007 notifying that the network status has changed (step 1014). The Network Status Change message includes network status information, for example Network Status Change AVP.

The P 1007 receives the Notification of Network Status Change message from the G, M 1003 and determines to change the pre-installed media policy, and in step 1016, the media processing action and the media processing action request Lt; RTI ID = 0.0 > parameters. ≪ / RTI > In step 1018, the P 1007 transmits a Media Policy Change Request message requesting the change of the media policy previously installed in the G, M 1003. In step 1018, Information.

The G, M 1003 receives the Media Policy Change Request message from the P 1007, updates the installed media policy based on the media processing information included in the Media Policy Change Request message, The P 1007 transmits a Media Policy Change Confirm message to the P 1007 to confirm that the update is completed in step 1020. The P 1007 receives the Notification of Network Status Change message from the G 1003, , And transmits an Ack message to the G, M 1003 to confirm that the network status has changed in response to the Notification of Network Status Change message (Step 1022).

Meanwhile, although FIG. 10 shows a procedure of updating a media policy according to a network status change in the mobile communication system according to the second embodiment of the present invention, various modifications may be made to FIG. In one example, although successive steps are shown in FIG. 10, it is understood that the steps described in FIG. 10 may overlap, occur in parallel, occur in different orders, or occur multiple times.

10, the procedure for updating the media policy according to the network status change in the mobile communication system according to the second embodiment of the present invention has been described. Next, referring to FIG. 11, A procedure for reporting the media processing use record when the session is released from the system will be described.

11 is a diagram illustrating a procedure for reporting a media processing use record when a session is released in the mobile communication system according to the second embodiment of the present invention.

Referring to FIG. 11, the mobile communication system includes a user terminal 1101, G, M 1103, P 1107, and a content server 1109. The G, M 1103 is connected to the mobile network 1110.

The G and M 1103 transmit a Session Release Indication message to the P 1107 indicating that the session is released in step 1112. In step 1114, Includes a Media Processing Usage Record AVP. The P 1107 receives the Session Release Indication message from the G and M 1103 and transmits an Ack message to the G and M 1103 to confirm that the predetermined session has been released. step)

Meanwhile, although FIG. 11 shows a procedure of reporting a media processing use record when a session is released in the mobile communication system according to the second embodiment of the present invention, various modifications may be made to FIG. In one example, although the sequential steps are shown in FIG. 11, it is understood that the steps described in FIG. 11 may overlap, occur in parallel, occur in different orders, or occur multiple times.

11, the procedure for reporting the media processing use record upon termination of the session in the mobile communication system according to the second exemplary embodiment of the present invention has been described. Next, referring to FIG. 12, The system structure will now be described.

FIG. 12 is a view schematically showing a structure of a mobile communication system according to a third embodiment of the present invention.

12, the mobile communication system includes a user terminal 1201, P 1203, G 1205, M 1207 and a content server 1209, and G 1205 includes a mobile network 1210 .

Here, the M 1207 is separated from the G 1205, and the P 1203 and the G 1205 interact with each other via the interface a, and the G 1205 and the M (1207) interact via interface B, and P (1203) and M (1207) interact via interface c.

12, the structure of the mobile communication system according to the third embodiment of the present invention is described. Next, with reference to FIG. 13, a procedure for installing a media policy in the mobile communication system according to the third embodiment of the present invention will be described .

13 is a diagram illustrating a procedure for installing a media policy in the mobile communication system according to the third embodiment of the present invention.

Referring to FIG. 13, the mobile communication system includes a user terminal 1301, G 1303, M 1305, P 1307, and a content server 1309. The G 1303 is connected to the mobile network 1310.

The G 1303 transmits an Indication of Application Detection Start message indicating that the application is detected to the P 1307 in step 1312. In step 1314, And detected application information that is information on the detected application, and the detected application information can be, for example, Detected Media Info AVP.

The P 1307 receives an Indication of Application Detection Start message from the G 1303 and selects an MPF entity, that is, the M 1305 (step 1316), and determines a media policy (step 1318) Also, although not shown in FIG. 13, the P 407 determines the PCC rules and / or the ADC rules based on the subscription policy information before determining the media policy.

Then, the P 1307 transmits an MPC profile index (MPC) index to the G (1303), an index for the Media Processing Info AVP, i.e., a Media Processing Control (MPC) (Step 1320). In step 1320, the P 1307 transmits an MPC profile index message including an extension header of the application layer, for example, HTTP Headers can be used. The G 1303 receives the MPC profile index message from the P 1307 and transmits the received MPC profile index message to the M 1305. In step 1322, Receives a MPC profile index message from the MPC profile index message 1303, and transmits a Media Policy Request message including an MPC profile index included in the MPC profile index message to the P 1307 to request a media policy (step 1324) . Upon receiving the Media Policy Request message from the M 1305, the P 1307 transmits an MPC profile index message including the media policy requested to the M 1305 (step 1326)

The M 1305 receives an MPC profile index message from the P 1307 and establishes a session with the content server 1309 according to the MPC profile 1309. In step 1328, the M 1305 informs the P 1307 that the session establishment is completed Ack message to the G 1303 in step 1330 and transmits a Complete message to the G 1303 indicating that the session setup is completed in step 1332. In step 1332,

Meanwhile, although FIG. 13 shows a procedure for installing a media policy in the mobile communication system according to the third embodiment of the present invention, various modifications may be made to FIG. In one example, although successive steps are shown in FIG. 13, it is understood that the steps described in FIG. 13 may overlap, occur in parallel, occur in different orders, or occur multiple times.

FIG. 13 illustrates a procedure for installing a media policy in the mobile communication system according to the third embodiment of the present invention. Next, referring to FIG. 14, in the mobile communication system according to the third embodiment of the present invention, The procedure for updating the media policy will be described.

FIG. 14 is a flowchart illustrating a procedure for updating a media policy according to a network status change in the mobile communication system according to the third embodiment of the present invention.

Referring to FIG. 14, the mobile communication system includes a user terminal 1401, G 1403, M 1405, P 1407, and a content server 1409. The G 1403 is connected to the mobile network 1410.

The G 1403 transmits a Notification of Network Status Change message to the M 1405 notifying that the network status has been changed in step 1412. In step 1414, The Change message includes network status information, for example Network Status Change AVP.

The M 1405 receives the Notification of Network Status Change message from the G 1403 and transmits a Media Policy Change Request message to the P 1407 requesting the change of the pre-installed media policy. (Step 1424) P 1407 receiving the Media Policy Change Request message from the M 1405 updates the media processing action including the media processing action and the required parameters in the preset session, and the updated media processing To the M 1405, an updated media policy (hereinafter referred to as an 'updated media policy') message including the updated media policy (Step 1426). Accordingly, the M (1405) updates the pre-installed media policy with the updated media policy included in the updated Media Policy message.

Meanwhile, although FIG. 14 shows a procedure for updating a media policy according to network status change in the mobile communication system according to the third embodiment of the present invention, various modifications may be made to FIG. In one example, although the sequential steps are shown in FIG. 14, it is understood that the steps described in FIG. 14 may overlap, occur in parallel, occur in different orders, or occur multiple times.

FIG. 14 illustrates a procedure for updating a media policy according to a network status change in the mobile communication system according to the third embodiment of the present invention. Next, referring to FIG. 15, The structure of the mobile communication system will be described.

15 is a diagram illustrating a structure of a mobile communication system according to a fourth embodiment of the present invention.

15, the mobile communication system includes a user terminal 1501, a P 1503, a G 1505, an M 1507, and a content server 1509, and the G 1505 includes a mobile network 1510 .

Here, the M 1507 is separated from the G 1505, and the P 1503 and the G 1505 interact with each other via the interface a, and the G 1505 and the G 1505 cooperate with each other. M 1507 interact with each other via interface B. [

FIG. 15 illustrates a structure of a mobile communication system according to a fourth embodiment of the present invention. Referring to FIG. 16, a procedure for installing a media policy in the mobile communication system according to the third embodiment of the present invention will be described .

16 is a diagram illustrating a procedure for installing a media policy in the mobile communication system according to the fourth embodiment of the present invention.

Referring to FIG. 16, the mobile communication system includes a user terminal 1601, G 1603, M 1605, P 1607, and a content server 1609. The G 1603 is connected to the mobile network 1610.

The G 1603 transmits an Indication of Application Detection Start message indicating that the application is detected to the P 1607 in step 1612. In step 1614, And detected application information which is information on the detected application, and the detected application information may be, for example, Detected Media Info AVP.

The P 1607 selects an MPF entity, that is, the M 1605 (step 1616), and determines a media policy (step 1618). Although not shown in FIG. 16, the P (1607) Prior to determining the PCC rules and / or ADC rules based on the subscription policy information.

The P 1607 transmits the index of the media processing information, that is, the MPC profile index to the G 1603 (step 1620). At this time, the P 1607 transmits the MPC profile index Layer extension header, for example, an HTTP header. The G (1603) receives the MPC profile index from the P (1607) and transfers the received MPC profile index to the M (1605) (step 1622).

The M 1605 sets up a session with the content server 1609 and sends a Complete message to the G 1603 indicating that the session setup is completed in step 1624. In step 1626, Transmits the ack message to the P 1607 in response to the reception of the MPC profile index in step 1620. In step 1628, the M 1605 transmits the ack message to the user terminal 1601 and the content server 1609, Lt; RTI ID = 0.0 > TCP < / RTI >

Meanwhile, although FIG. 16 shows a procedure for installing a media policy in the mobile communication system according to the fourth embodiment of the present invention, various modifications may be made to FIG. As an example, although successive steps are shown in FIG. 16, it is understood that the steps described in FIG. 16 may overlap, occur in parallel, occur in different orders, or occur multiple times.

16, a procedure for installing a media policy in the mobile communication system according to the fourth embodiment of the present invention has been described. Next, referring to FIG. 17, in the mobile communication system according to the fourth embodiment of the present invention, The procedure for updating the media policy will be described.

17 is a diagram illustrating a procedure for updating a media policy according to a network status change in the mobile communication system according to the fourth embodiment of the present invention.

Referring to FIG. 17, the mobile communication system includes a user terminal 1701, G 1703, M 1705, P 1707, and a content server 1709. The G 1703 is connected to the mobile network 1710.

When the G 1703 detects that the network status has changed (Step 1712), the G 1703 transmits a Media Policy Change Request message requesting the change of the installed media policy to the P 1707. (Step 1714). The P 1707 receives the Media Policy Change Request message from the G 1703, and thereby generates a media processing action in the predetermined session, and media processing information including required parameters of the media processing action And transmits an updated Media Policy message including the updated media processing information to the G 1703 in step 1716. The G 1703 transmits the updated Media Policy message to the M 1705 (Step 1718).

The M 1705 having received the updated Media Policy message from the G 1703 transmits an Ack message to the G 1703 to confirm receipt of the updated Media Policy message in step 1720. The G 1703 that has received the Ack message from the M 1705 transmits the Ack message, which is a response message to the updated Media Policy message in step 1716, to the P 1707. In step 1722, The M 1705 updates the media policy previously installed with the updated media policy included in the updated Media Policy message.

17 illustrates a procedure for updating a media policy according to a network status change in the mobile communication system according to the fourth embodiment of the present invention, various modifications may be made to FIG. As an example, although the successive steps are shown in FIG. 17, it is understood that the steps described in FIG. 17 may overlap, occur in parallel, occur in different orders, or occur multiple times.

17, the procedure for updating the media policy according to the network status change in the mobile communication system according to the fourth embodiment of the present invention has been described. Next, referring to FIG. 18, A procedure for reporting the media processing use record when the session is released from the system will be described.

18 is a diagram illustrating a procedure for reporting a media processing use record when a session is released in the mobile communication system according to the fourth embodiment of the present invention.

Referring to FIG. 18, the mobile communication system includes a user terminal 1801, G 1803, M 1805, P 1807, and a content server 1809. The G 1803 is connected to the mobile network 1810.

The M 1805 transmits a Session Release Indication message to the G 1803 indicating that the session has been released in step 1812. In step 1814, Processing Usage Record Includes AVP. The G 1803 receives the Session Release Indication message from the M 1805 and generates a Media Processing Usage Record including the Media Processing Usage Record AVP included in the received Session Release Indication message (Hereinafter referred to as " Media Processing Usage Record ") message to the P 1807 (step 1816)

Meanwhile, although FIG. 18 shows a procedure of reporting a media processing use record when a session is released in the mobile communication system according to the fourth embodiment of the present invention, various modifications may be made to FIG. As an example, although successive steps are shown in FIG. 18, it is understood that the steps described in FIG. 18 may overlap, occur in parallel, occur in a different order, or occur multiple times.

18, a procedure for reporting a media processing use record upon termination of a session in the mobile communication system according to the fourth exemplary embodiment of the present invention has been described. Next, referring to FIG. 19, The internal structure of the user terminal will be described.

19 is a diagram schematically illustrating an internal structure of a user terminal in a mobile communication system according to an embodiment of the present invention.

19, a user terminal 1900 includes a transmitter 1911, a controller 1913, a receiver 1915, and a storage unit 1917.

The controller 1913 controls the overall operation of the user terminal 1900, and particularly controls the user terminal 1900 to perform a media processing operation. Here, the media processing operations performed by the user terminal 1900 are the same as those described with reference to FIGS. 1 to 18, and a detailed description thereof will be omitted here.

The transmitter 1911 transmits various signals and messages to other entities under the control of the controller 1913.

In addition, the receiver 1915 receives various signals and messages from other entities under the control of the controller 1913.

In addition, the storage unit 1917 stores various programs and data for performing the media processing operation as described with reference to FIGS. 1 to 18 by the user terminal 1900, And stores the data generated during the media processing operation as shown in FIG.

19 shows a case where the transmitter 1911, the controller 1913, the receiver 1915 and the storage unit 1917 of the user terminal 1900 are implemented as separate units. However, It is needless to say that the user terminal 1900 may be integrated with at least one of the transmitter 1911, the controller 1913, the receiver 1915, and the storage unit 1917.

FIG. 19 illustrates the internal structure of a user terminal in a mobile communication system according to an embodiment of the present invention. Referring to FIG. 20, the structure of a device P in a mobile communication system according to an embodiment of the present invention Will be described.

20 is a diagram schematically showing an internal structure of a device P in a mobile communication system according to an embodiment of the present invention.

20, a device P 2000 includes a transmitter 2011, a controller 2013, a receiver 2015, and a storage unit 2017.

The controller 2013 controls the overall operation of the device P 2000, and in particular controls the device P 2000 to perform a media processing operation. Here, the media processing operation performed by the device P (2000) is the same as that described with reference to FIG. 1 to FIG. 18, and thus a detailed description thereof will be omitted here.

The transmitter 2011 transmits various signals and messages to other entities under the control of the controller 2013.

In addition, the receiver 2015 receives various signals and messages from other entities under the control of the controller 2013.

Also, the storage unit 2017 stores various programs and data for performing the media processing operation as described in FIGS. 1 to 18 by the device P (2000) And stores the data generated during the media processing operation as shown in FIG.

20 shows a case where the device P 2000 is implemented as separate units of the transmitter 2011, the controller 2013, the receiver 2015, and the storage unit 2017, It is needless to say that at least one of the transmitter 2011, the controller 2013, the receiver 2015, and the storage unit 2017 may be integrated into the device P 2000.

20, the internal structure of the device P in the mobile communication system according to an embodiment of the present invention has been described. Next, with reference to FIG. 21, in the mobile communication system according to an embodiment of the present invention, Will be described.

21 is a diagram schematically showing the internal structure of a device G in the mobile communication system according to an embodiment of the present invention.

21, the device G 2100 includes a transmitter 2111, a controller 2113, a receiver 2115, and a storage unit 2117.

The controller 2113 controls the overall operation of the device G 2100, and particularly controls the device G 2100 to perform a media processing operation. Here, the media processing operation performed by the device G (2100) is the same as that described with reference to FIG. 1 to FIG. 18, and a detailed description thereof will be omitted here.

The transmitter 2111 transmits various signals and messages to other entities under the control of the controller 2113.

In addition, the receiver 2115 receives various signals and messages from other entities under the control of the controller 2113.

1 to 18, the storage unit 2117 stores various programs and data for performing the media processing operations as described in FIGS. 1 to 18, And stores the data generated during the media processing operation as shown in FIG.

21 shows a case where the device G 2100 is implemented as separate units from the transmitter 2111, the controller 2113, the receiver 2115 and the storage unit 2117, It is needless to say that the device G 2100 may be implemented by integrating at least one of the transmitter 2111, the controller 2113, the receiver 2115 and the storage unit 2117.

21, the internal structure of the device G in the mobile communication system according to an embodiment of the present invention is described. Next, referring to FIG. 22, in the mobile communication system according to an embodiment of the present invention, Will be described.

22 is a diagram schematically showing an internal structure of a device M in a mobile communication system according to an embodiment of the present invention.

22, device M 2200 includes a transmitter 2211, a controller 2213, a receiver 2215, and a storage unit 2217.

The controller 2213 controls the overall operation of the device M 2200, and particularly controls the device M 2200 to perform a media processing operation. Here, the media processing operations performed by the device M (2200) are the same as those described with reference to FIG. 1 to FIG. 18, and a detailed description thereof will be omitted here.

The transmitter 2211 transmits various signals and messages to other entities under the control of the controller 2213.

In addition, the receiver 2215 receives various signals and messages from other entities under the control of the controller 2213.

In addition, the storage unit 2217 stores various programs and data for performing the media processing operation as described with reference to Figs. 1 to 18 by the device M (2200) And stores the data generated during the media processing operation as shown in FIG.

22 shows a case where the device M 2200 is implemented as separate units from the transmitter 2211, the controller 2213, the receiver 2215, and the storage unit 2217, The device M 2200 may be implemented in a form in which at least one of the transmitter 2211, the controller 2213, the receiver 2215, and the storage unit 2217 is integrated.

22, the internal structure of the device M in the mobile communication system according to an embodiment of the present invention is described. Next, referring to FIG. 23, in the mobile communication system according to an embodiment of the present invention, Will be described.

23 is a diagram schematically illustrating an internal structure of a content server in a mobile communication system according to an embodiment of the present invention.

23, the content server 2300 includes a transmitter 2311, a controller 2313, a receiver 2315, and a storage unit 2317.

The controller 2313 controls the overall operation of the content server 2300, and particularly controls the content server 2300 to perform a media processing operation. Here, the media processing operations performed by the content server 2300 are the same as those described with reference to FIGS. 1 to 18, and therefore, a detailed description thereof will be omitted here.

The transmitter 2311 transmits various signals and messages to other entities under the control of the controller 2313.

In addition, the receiver 2315 receives various signals and messages from other entities under the control of the controller 2313.

In addition, the storage unit 2317 stores various programs and data for the media server 2300 to perform media processing operations as described with reference to FIGS. 1 to 18, And stores the data generated during the media processing operation as shown in FIG.

23 shows a case where the content server 2300 is implemented as separate units by the transmitter 2311, the controller 2313, the receiver 2315, and the storage unit 2317. However, The contents server 2300 may be implemented in a form in which at least one of the transmitter 2311, the controller 2313, the receiver 2315, and the storage unit 2317 is integrated.

Certain aspects of the invention may also be implemented as computer readable code in a computer readable recording medium. The computer readable recording medium is any data storage device capable of storing data that can be read by a computer system. Examples of the computer-readable recording medium include a read-only memory (ROM), a random-access memory (RAM), CD-ROMs, magnetic tapes , Floppy disks, optical data storage devices, and carrier waves (such as data transmission over the Internet). The computer readable recording medium may also be distributed over networked computer systems, and thus the computer readable code is stored and executed in a distributed manner. Also, functional programs, code, and code segments for accomplishing the present invention may be readily interpreted by programmers skilled in the art to which the invention applies.

It will also be appreciated that the apparatus and method for processing media traffic in accordance with an embodiment of the present invention may be implemented in hardware, software, or a combination of hardware and software. Such arbitrary software may be stored in a memory such as, for example, a volatile or non-volatile storage device such as a storage device such as ROM or the like, or a memory such as a RAM, a memory chip, a device or an integrated circuit, , Or a storage medium readable by a machine (e.g., a computer), such as a CD, a DVD, a magnetic disk, or a magnetic tape, as well as being optically or magnetically recordable. A method of processing media traffic according to an exemplary embodiment of the present invention may be implemented by a computer or a mobile terminal including a controller and a memory, and the memory may store programs or programs including instructions for implementing the embodiments of the present invention It will be appreciated that this is an example of a machine-readable storage medium suitable for the following.

Accordingly, the invention includes a program comprising code for implementing the apparatus or method as claimed in any of the claims herein, and a storage medium readable by a machine (such as a computer) for storing such a program. In addition, such a program may be electronically transferred through any medium, such as a communication signal carried over a wired or wireless connection, and the present invention appropriately includes equivalents thereof

Also, the media traffic processing apparatus according to an embodiment of the present invention can receive and store the program from a program providing apparatus connected by wire or wireless. The program providing apparatus includes a memory for storing a program including instructions for causing the program processing apparatus to perform a predetermined content protection method, information necessary for the content protection method, and the like, and a wired or wireless communication with the graphics processing apparatus And a control unit for transmitting the program to the transceiver upon request or automatically by the graphic processing apparatus.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. 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.

Claims (84)

1. A method of processing media traffic in an MPF entity in a mobile communication system,
When an Internet Protocol (IP) Connectivity Access Network (IP-CAN) session is established between a gateway having a traffic detection function (TDF) and a media policy server, When an application is detected in a gateway having a TDF, a process of installing a media policy,
And updating the media policy according to a network status after the media policy is installed. The method according to claim 1,
And processing the media traffic based on the media policy. ≪ Desc / Clms Page number 21 > 3. The method of claim 2,
And reporting the media processing use record to the media policy server when the media traffic processing is completed. The method according to claim 1,
Wherein the media policy includes a media processing rule applicable based on a user terminal or contents. The method according to claim 1,
The media policy includes a media processing rule applicable based on a user terminal or contents, and the media processing rule includes an attribute-value-pair (AVP) of Media Processing Info ,
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. 6. The method of claim 5,
The Media Processing Info AVP includes a Media Processing Indicator AVP, a Selected MPF Identifier (ID) AVP, an Application Instance Identifier (AVP) AVP, a Media Processing Action (AVP) AVP, < / RTI >
The Media Processing Indicator AVP indicates whether the detected session requires media processing,
The Selected MPF ID AVP is a policy and charging enforcement function (PCEF) with an ADC function (PCEF with ADC: P-GW) having an Application Detection Control (ADC) And an identifier of a selected media processing function that should be forwarded,
The Application Instance Identifier AVP includes an identifier assigned by a P-GW entity having an ADC function to allow correlation of an application start event and an application stop event with a service data flow description,
Wherein the Media Processing Action AVP includes at least one of parameters required for the media processing action and the media processing action. The method according to claim 1,
Wherein the step of installing the media policy comprises:
Establishing an MPF session with the media policy server;
Receiving the media policy from the media policy server;
And installing the received media policy in the mobile communication system. The method according to claim 1,
Updating the media policy based on the network status comprises:
Receiving a media policy change request message requesting to change the installed media policy from the media policy server as the network status is changed;
And updating the installed media policy based on the updated media policy included in the media policy change request message,
Wherein the MPF entity and the gateway having the TDF are located separately from each other. The method of claim 3,
Reporting the media processing use record to the media policy server when the media traffic processing is completed;
Detecting that a session established for media traffic processing is released between the MPF entity and the media policy server;
And reporting to the media policy server media processing usage records collected by the MPF entity while the session is maintained. 10. The method of claim 9,
Wherein the media processing use records include at least one of a traffic usage attribute-value-pair (AVP), a session information AVP, and a media processing use information AVP. How Entities Handle Media Traffic. 11. The method of claim 10,
The traffic usage information AVP includes an octet count transmitted from the MPF entity to the user terminal,
The session information AVP includes at least one of session information, origin server information, a source address, a destination address, and ports,
The media processing use information AVP includes at least one of a type of a media processing action and parameters of the media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. The method according to claim 1,
Wherein the step of installing the media policy comprises:
Receiving the media policy from the media policy server;
And installing the received media policy in the mobile communication system. The method according to claim 1,
Updating the media policy based on the network status comprises:
Receiving a media policy change request message requesting to change the installed media policy from the media policy server as the network status is changed;
And updating the installed media policy based on the updated media policy included in the media policy change request message,
Wherein the MPF entity and the gateway having the TDF are located together. The method of claim 3,
Reporting the media processing use record to the media policy server when the media traffic processing is completed;
Detecting that a session established for media traffic processing is released between the MPF entity and the media policy server;
And reporting to the media policy server media processing usage records collected by the MPF entity while the session is maintained,
Wherein the MPF entity and the gateway having the TDF are located together. 15. The method of claim 14,
Wherein the media processing use records include at least one of a traffic usage attribute-value-pair (AVP), a session information AVP, and a media processing use information AVP. How Entities Handle Media Traffic. 16. The method of claim 15,
The traffic usage information AVP includes an octet count transmitted from the MPF entity to the user terminal,
The session information AVP includes at least one of session information, origin server information, a source address, a destination address, and ports,
The media processing use information AVP includes a type of a media processing action and parameters of the media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises one of trans-coding, trans-rating, and video pacing. ≪ Desc / Clms Page number 19 > The method according to claim 1,
Wherein the step of installing the media policy comprises:
Receiving a media processing control (MPC) profile index from a gateway having the TDF;
Transmitting a media policy message requesting a media policy including the MPC profile index to the media policy server;
Receiving the media policy from the media policy server;
And installing the received media policy,
The MPC profile index includes an index for a Media Processing Info attribute-value-pair (AVP)
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. The method according to claim 1,
Updating the media policy based on the network status comprises:
Receiving a network status change notification message informing that a status of a network has changed from a gateway having the TDF as the network status is changed;
Transmitting a media policy change request message requesting a change of the installed media policy to the media policy server;
Receiving an updated media policy message including an updated media policy from the media policy server after transmitting the media policy change request message;
And updating the installed media policy based on the updated media policy included in the updated Media Policy message. The method according to claim 1,
Wherein the step of installing the media policy comprises:
Receiving a media processing control (MPC) profile index from a gateway having the TDF;
Transmitting a media policy message requesting a media policy including the MPC profile index to the media policy server;
A process of establishing a session with a contents server,
Setting a session with the content server, transmitting a completion message indicating that the session establishment with the content server is completed to the gateway having the TDF,
And performing a Transmission Control Protocol (TCP) proxy function for an application session between the user terminal and the content server after transmitting the completion message to the gateway having the TDF,
The MPC profile index includes an index for a Media Processing Info attribute-value-pair (AVP)
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. The method according to claim 1,
Updating the media policy based on the network status comprises:
Receiving an updated media policy message including an updated media policy from a gateway having the TDF as the network status is changed;
And updating the installed media policy based on the updated media policy included in the updated Media Policy message. The method of claim 3,
Reporting the media processing use record to the media policy server when the media traffic processing is completed;
Detecting that a session established for media traffic processing is released between the MPF entity and the media policy server;
Reporting the media processing usage records collected by the MPF entity to the gateway having the TDF while the session is maintained and allowing the gateway having the TDF to report the media processing use records collected by the MPF entity to the media policy server And processing the media traffic of the MPF entity in the mobile communication system. The method according to claim 1,
Wherein the MPF entity and the gateway having the TDF are located separately or together. A method of processing media traffic in a media communication system in a mobile communication system,
When an Internet Protocol (IP) Connectivity Access Network (IP-CAN) session is established between the media policy server and a gateway having a traffic detection function (TDF) Providing a media policy to a Media Processing Function (MPF) entity when an application is detected in the gateway having the TDF;
And providing the media policy updated to the MPF entity based on a network status after providing the media policy. 23. The method of claim 23,
Further comprising the step of receiving a media processing use record from the MPF entity when the media traffic processing based on the media policy of the MPF entity is completed. Way. 24. The method of claim 23,
Wherein the media policy includes a media processing rule applicable to a user terminal or contents based on the media policy. 24. The method of claim 23,
The media policy includes a media processing rule applicable based on a user terminal or contents, and the media processing rule includes an attribute-value-pair (AVP) of Media Processing Info ,
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing in a mobile communication system. 27. The method of claim 26,
The Media Processing Info AVP includes a Media Processing Indicator AVP, a Selected MPF Identifier (ID) AVP, an Application Instance Identifier (AVP) AVP, a Media Processing Action (AVP) AVP, < / RTI >
The Media Processing Indicator AVP indicates whether the detected session requires media processing,
The Selected MPF ID AVP is a policy and charging enforcement function (PCEF) with an ADC function (PCEF with ADC: P-GW) having an Application Detection Control (ADC) And an identifier of a selected media processing function that should be forwarded,
The Application Instance Identifier AVP includes an identifier assigned by a P-GW entity having an ADC function to allow correlation of an application start event and an application stop event with a service data flow description,
Wherein the Media Processing Action AVP includes at least one of parameters required for the media processing action and the media processing action. 24. The method of claim 23,
Wherein the providing of the media policy comprises:
Establishing an MPF session with the MPF entity;
And transmitting the media policy to the MPF entity. 24. The method of claim 23,
Providing the updated media policy to the MPF entity based on the network status after providing the media policy comprises:
Receiving a Notification of Network Status Change message informing that the network status has changed from a gateway having the TDF;
And transmitting a media policy change request message requesting the MPF entity to change a media policy installed in the MPF entity after receiving the Notification of Network Status Change message,
Wherein the MPF entity and the gateway having the TDF are located separately from each other. 25. The method of claim 24,
Receiving a media processing use record from the MPF entity when the media traffic processing based on the media policy of the MPF entity is completed;
Receiving from the MPF entity the media processing use records collected while the session is maintained as the session established for the media traffic processing is released between the MPF entity and the media policy server Wherein the media traffic is transmitted to the media server. 31. The method of claim 30,
Wherein the media processing use records include at least one of a traffic usage attribute-value-pair (AVP), a session information AVP, and a media processing use information AVP. How policy servers handle media traffic. 32. The method of claim 31,
The traffic usage information AVP includes an octet count transmitted from the MPF entity to the user terminal,
The session information AVP includes at least one of session information, origin server information, a source address, a destination address, and ports,
The media processing use information AVP includes at least one of a type of a media processing action and parameters of the media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing in a mobile communication system. 24. The method of claim 23,
Providing an updated media policy to the MPF entity based on the network status comprises:
Receiving a Notification of Network Status Change message informing that the network status has changed from a gateway having the TDF;
And transmitting a media policy change request message requesting the MPF entity to change a media policy installed in the MPF entity after receiving the Notification of Network Status Change message,
Wherein the MPF entity and the gateway having the TDF are located together. 25. The method of claim 24,
Receiving a media processing use record from the MPF entity when the media traffic processing based on the media policy of the MPF entity is completed;
Receiving from the MPF entity the media processing use records collected while the session is maintained as the session established for the media traffic processing is released between the MPF entity and the media policy server In addition,
Wherein the MPF entity and the gateway having the TDF are located together. 35. The method of claim 34,
Wherein the media processing use records include at least one of a traffic usage attribute-value-pair (AVP), a session information AVP, and a media processing use information AVP. How policy servers handle media traffic. 36. The method of claim 35,
The traffic usage information AVP includes an octet count transmitted from the MPF entity to the user terminal,
The session information AVP includes at least one of session information, origin server information, a source address, a destination address, and ports,
The media processing use information AVP includes a type of a media processing action and parameters of the media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises one of trans-coding, trans-rating, and video pacing in a mobile communication system. 24. The method of claim 23,
Wherein the providing of the media policy comprises:
Transmitting a media processing control (MPC) profile index to a gateway having the TDF;
Receiving a media policy message requesting a media policy from the MPF entity, the media policy message including the MPC profile index;
And transmitting the media policy to the MPF entity,
The MPC profile index includes an index for a Media Processing Info attribute-value-pair (AVP)
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing in a mobile communication system. 24. The method of claim 23,
Providing the updated media policy to the MPF entity based on the network status after providing the media policy;
Receiving a media policy change request message requesting a change of a media policy installed in the MPF entity from the MPF entity as the network status is changed;
And transmitting an updated media policy message including an updated media policy to the MPF entity after receiving the media policy change request message. A method of processing media traffic of 24. The method of claim 23,
Wherein the providing of the media policy comprises:
A media processing control (MPC) profile index is transmitted to a gateway having the TDF, and a gateway having the TDF transmits a media policy requesting a media policy including the MPC profile index to the MPF entity And transmitting the message,
The MPC profile index includes an index for a Media Processing Info attribute-value-pair (AVP)
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing in a mobile communication system. 24. The method of claim 23,
Providing an updated media policy to the MPF entity based on the network status comprises:
Receiving a media policy change request message requesting a change of the media policy from a gateway having the TDF as the network status is changed;
After receiving the media policy change request message, an updated Media Policy message including an updated media policy to the gateway having the TDF is transmitted, and a gateway having the TDF transmits the updated media policy message to the MPF entity And transmitting an updated Media Policy message including a media policy to the media policy server in the mobile communication system. 25. The method of claim 24,
Receiving a media processing use record from the MPF entity when the media traffic processing based on the media policy of the MPF entity is completed;
Receiving media processing use records collected by the MPF entity while the session is maintained from the gateway having the TDF as the session established for the media traffic processing is released between the MPF entity and the media policy server And transmitting the media traffic to the media server. 24. The method of claim 23,
Wherein the MPF entity and the gateway having the TDF are located separately or co-located with each other. In a media processing function (MPF) entity in a mobile communication system,
When an Internet Protocol (IP) Connectivity Access Network (IP-CAN) session is established between a gateway having a traffic detection function (TDF) and a media policy server, And a controller for installing a media policy when the application is detected in the gateway having the TDF and updating the media policy based on the network status after installing the media policy. In the MPF entity. 44. The method of claim 43,
Wherein the controller processes media traffic based on the media policy. 45. The method of claim 44,
Further comprising a transmitter for reporting the media processing use record to the media policy server when the media traffic processing is completed. 44. The method of claim 43,
Wherein the media policy includes a media processing rule applicable based on a user terminal or contents. 44. The method of claim 43,
The media policy includes a media processing rule applicable based on a user terminal or contents, and the media processing rule includes an attribute-value-pair (AVP) of Media Processing Info ,
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. 49. The method of claim 47,
The Media Processing Info AVP includes a Media Processing Indicator AVP, a Selected MPF Identifier (ID) AVP, an Application Instance Identifier (AVP) AVP, a Media Processing Action (AVP) AVP, < / RTI >
The Media Processing Indicator AVP indicates whether the detected session requires media processing,
The Selected MPF ID AVP is a policy and charging enforcement function (PCEF) with an ADC function (PCEF with ADC: P-GW) having an Application Detection Control (ADC) Includes an identifier of the selected media processing function that should be forwarded,
The Application Instance Identifier AVP includes an identifier assigned by a P-GW entity having an ADC capability to allow correlation of a specific service data flow description of application start and stop events,
Wherein the Media Processing Action AVP includes at least one of parameters required for the media processing action and the media processing action. 44. The method of claim 43,
A transmitter,
Further comprising a receiver,
The transmitter and the receiver establish an MPF session with the media policy server,
The receiver receiving the media policy from the media policy server,
And the controller installs the received media policy. 44. The method of claim 43,
Further comprising a receiver for receiving a media policy change request message requesting to change the installed media policy from the media policy server as the network status changes,
Wherein the controller updates the installed media policy based on the updated media policy included in the media policy change request message,
Wherein the MPF entity and the gateway having the TDF are located separately from each other. 46. The method of claim 45,
The controller detects that the session established for the media traffic processing between the MPF entity and the media policy server is released,
Wherein the transmitter reports the media processing usage records collected by the MPF entity to the media policy server while the session is maintained. 52. The method of claim 51,
Wherein the media processing use records include at least one of a traffic usage attribute-value-pair (AVP), a session information AVP, and a media processing use information AVP. Entity. 53. The method of claim 52,
The traffic usage information AVP includes an octet count transmitted from the MPF entity to the user terminal,
The session information AVP includes at least one of session information, origin server information, a source address, a destination address, and ports,
The media processing use information AVP includes at least one of a type of a media processing action and parameters of the media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. 44. The method of claim 43,
And a receiver for receiving the media policy from the media policy server,
And the controller installs the received media policy. 44. The method of claim 43,
Further comprising a receiver for receiving a media policy change request message requesting to change the installed media policy from the media policy server as the network status changes,
Wherein the controller updates the installed media policy based on the updated media policy included in the media policy change request message,
Wherein the MPF entity and the gateway having the TDF are located together. 46. The method of claim 45,
Further comprising a transmitter,
The controller detects that the session established for the media traffic processing between the MPF entity and the media policy server is released,
The transmitter reports media processing usage records collected by the MPF entity to the media policy server while the session is maintained,
Wherein the MPF entity and the gateway having the TDF are located together. 57. The method of claim 56,
Wherein the media processing use records include at least one of a traffic usage attribute-value-pair (AVP), a session information AVP, and a media processing use information AVP. Entity. 58. The method of claim 57,
The traffic usage information AVP includes an octet count transmitted from the MPF entity to the user terminal,
The session information AVP includes at least one of session information, origin server information, a source address, a destination address, and ports,
The media processing use information AVP includes at least one of a type of a media processing action and parameters of the media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. 44. The method of claim 43,
A receiver for receiving a media processing control (MPC) profile index from a gateway having the TDF;
And a transmitter for transmitting a media policy message requesting a media policy, the media policy message including the MPC profile index to the media policy server,
Wherein the receiver receives the media policy from the media policy server,
The controller establishes the received media policy,
The MPC profile index includes an index for a Media Processing Info attribute-value-pair (AVP)
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. 44. The method of claim 43,
A receiver for receiving a network status change notify message informing that the status of the network has changed from a gateway having the TDF as the network status is changed;
Further comprising a transmitter for transmitting a media policy change request message for requesting the media policy server to change the installed media policy,
After the transmitter sends the media policy change request message, the receiver receives an updated media policy message including an updated media policy from the media policy server,
Wherein the controller updates the installed media policy based on the updated media policy included in the updated Media Policy message. 44. The method of claim 43,
A receiver for receiving a media processing control (MPC) profile index from a gateway having the TDF;
And a transmitter for transmitting a media policy message requesting a media policy, the media policy message including the MPC profile index to the media policy server,
The controller establishes a session with a contents server,
The transmitter transmits a completion message indicating that the session establishment with the content server is completed to the gateway having the TDF after the controller establishes a session with the content server,
After the transmitter transmits the completion message to the gateway having the TDF, the controller performs a Transmission Control Protocol (TCP) proxy function for an application session between the user terminal and the content server ,
The MPC profile index includes an index for a Media Processing Info attribute-value-pair (AVP)
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. 44. The method of claim 43,
Further comprising a receiver for receiving an updated media policy message including an updated media policy from a gateway having the TDF as the network status is changed,
Wherein the controller updates the installed media policy based on the updated media policy included in the updated Media Policy message. 46. The method of claim 45,
The controller detects that the session established for the media traffic processing between the MPF entity and the media policy server is released,
The transmitter reports the media processing use records collected by the MPF entity to the gateway having the TDF while the session is maintained so that the gateway having the TDF transmits the media processing use records collected by the MPF entity to the media policy server The MPF entity in the mobile communication system. 44. The method of claim 43,
Wherein the MPF entity and the gateway having the TDF are located separately or together. 1. A media policy server in a mobile communication system,
When an Internet Protocol (IP) Connectivity Access Network (IP-CAN) session is established between the media policy server and a gateway having a traffic detection function (TDF) When an application is detected in the gateway having the TDF, a media policy is provided to an entity of a media processing function (MPF), and after providing the media policy, And a transmitter for providing an updated media policy to the MPF entity. 65. The method of claim 65,
Further comprising a receiver for receiving a media processing use record from the MPF entity when the media traffic processing based on the media policy of the MPF entity is completed. 66. The method of claim 65,
Wherein the media policy includes a media processing rule applicable based on a user terminal or contents. 66. The method of claim 65,
The media policy includes a media processing rule applicable based on a user terminal or contents, and the media processing rule includes an attribute-value-pair (AVP) of Media Processing Info ,
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. 69. The method of claim 68,
The Media Processing Info AVP includes a Media Processing Indicator AVP, a Selected MPF Identifier (ID) AVP, an Application Instance Identifier (AVP) AVP, a Media Processing Action (AVP) AVP, < / RTI >
The Media Processing Indicator AVP indicates whether the detected session requires media processing,
The Selected MPF ID AVP is a policy and charging enforcement function (PCEF) with an ADC function (PCEF with ADC: P-GW) having an Application Detection Control (ADC) Includes an identifier of the selected media processing function that should be forwarded,
The Application Instance Identifier AVP includes an identifier assigned by a P-GW entity having an ADC capability to allow correlation of a specific service data flow description of application start and stop events,
Wherein the Media Processing Action AVP includes parameters required for the media processing action and the media processing action. 66. The method of claim 65,
Further comprising a receiver,
Wherein the transmitter and the receiver establish an MPF session with the MPF entity,
Wherein the transmitter transmits the media policy to the MPF entity. 66. The method of claim 65,
Further comprising a receiver for receiving a Notification of Network Status Change message informing that the network status has changed from a gateway having the TDF,
The transmitter transmits a media policy change request message requesting the MPF entity to change a media policy installed in the MPF entity after the receiver receives the Notification of Network Status Change message,
Wherein the MPF entity and the gateway having the TDF are located separately from each other. 67. The method of claim 66,
The receiver receives the media processing use records collected during the session is maintained from the MPF entity as the session established for the media traffic processing is released between the MPF entity and the media policy server A media policy server in a mobile communication system. 73. The method of claim 72,
Wherein the media processing use records include at least one of a traffic usage attribute-value-pair (AVP), a session information AVP, and a media processing use information AVP. Policy Server. 77. The method of claim 73,
The traffic usage information AVP includes an octet count transmitted from the MPF entity to the user terminal,
The session information AVP includes at least one of session information, origin server information, a source address, a destination address, and ports,
The media processing use information AVP includes at least one of a type of a media processing action and parameters of the media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. 66. The method of claim 65,
Further comprising a receiver for receiving a Notification of Network Status Change message informing that the network status has changed from a gateway having the TDF,
After receiving the Notification of Network Status Change message, the transmitter transmits a media policy change request message requesting the MPF entity to change a media policy installed in the MPF entity,
Wherein the MPF entity and the gateway having the TDF are located together. 67. The method of claim 66,
The receiver receives the media processing use records collected during the session is maintained by the MPF entity from the MPF entity as the session established for the media traffic processing is released between the MPF entity and the media policy server ,
Wherein the MPF entity and the gateway having the TDF are located together. 80. The method of claim 76,
Wherein the media processing use records include at least one of a traffic usage attribute-value-pair (AVP), a session information AVP, and a media processing use information AVP. Policy Server. 78. The method of claim 77,
The traffic usage information AVP includes an octet count transmitted from the MPF entity to the user terminal,
The session information AVP includes at least one of session information, origin server information, a source address, a destination address, and ports,
The media processing use information AVP includes at least one of a type of a media processing action and parameters of the media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. 66. The method of claim 65,
Further comprising a receiver,
The transmitter transmits a Media Processing Control (MPC) profile index to a gateway having the TDF,
The receiver receives from the MPF entity a media policy message requesting a media policy, the MPC profile index including the MPC profile index,
The transmitter transmits the media policy to the MPF entity,
The MPC profile index includes an index for a Media Processing Info attribute-value-pair (AVP)
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. 66. The method of claim 65,
Further comprising a receiver for receiving a media policy change request message requesting a change of a media policy installed in the MPF entity from the MPF entity as the network status is changed,
Wherein the transmitter transmits an updated media policy message including an updated media policy to the MPF entity after the receiver receives the media policy change request message. Policy Server. 66. The method of claim 65,
The transmitter transmits a media processing control (MPC) profile index to a gateway having the TDF, and a gateway having the TDF transmits a media policy request including the MPC profile index to the MPF entity To transmit a media policy message,
The MPC profile index includes an index for a Media Processing Info attribute-value-pair (AVP)
Wherein the Media Processing Info AVP comprises at least one of a media processing action and required parameters of the Media Processing Info AVP and a type of media processing action,
Wherein the media processing action comprises at least one of a cache and a media adaptation,
Wherein the media adaptation comprises at least one of trans-coding, trans-rating, and video pacing. 66. The method of claim 65,
Further comprising a receiver for receiving a media policy change request message requesting a change of the media policy from a gateway having the TDF as the network status is changed,
After the receiver receives the media policy change request message, the transmitter transmits an updated media policy message including an updated media policy to the gateway having the TDF, Wherein the media policy server transmits an updated Media Policy message including the updated media policy to the MPF entity. 67. The method of claim 66,
As the session established for media traffic processing is released between the MPF entity and the media policy server, the receiver receives media processing use records collected by the MPF entity during the session from the gateway having the TDF A media policy server in a mobile communication system characterized by an inbox. 66. The method of claim 65,
Wherein the MPF entity and the gateway having the TDF are located separately or together.

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