JP4647693B2 - Traffic transmission path resetting method in mobile communication system - Google Patents

Description

  The present invention relates to E-UMTS (Evolved Universal Mobile Telecommunication System), and more particularly, to an efficient traffic transmission path resetting method when a mobile terminal changes a gateway for traffic transmission.

  FIG. 1 is a diagram showing a network structure of E-UMTS, which is a mobile communication system to which the related art and the present invention are applied.

  The E-UMTS system has evolved from the UMTS system, and is undergoing basic standardization work in 3GPP. The E-UMTS system is classified as an LTE (Long Term Evolution) system.

  As shown in FIG. 1, the E-UMTS network is divided into an E-UTRAN 20 and an EPC (Evolved Packet Core) 10. The E-UTRAN 20 includes a terminal (UE), a base station (eNB or eNode B) 21, and an AG (Access Gateway; also referred to as “MME / UPE”) 11. The AG 11 is divided into a part for processing user traffic and a part for processing control traffic. The AG part for processing new user traffic and the AG part for processing control traffic can communicate via a newly defined interface.

  One eNode B (eNB) 21 has at least one cell, and an interface for transmitting user traffic and control traffic is used between the eNode Bs.

  The EPC 10 includes an AG 11 and a node for user registration of the UE. In the UMTS of FIG. 1, an interface for distinguishing between the E-UTRAN 20 and the EPC 10 can be used. The S1 interface can connect a plurality of nodes (that is, a plurality of nodes) between the eNode B 21 and the AG 11. The eNode Bs are connected by an X2 interface, and have a mesh network structure in which the X2 interface always exists between adjacent eNode Bs.

  The radio interface protocol layer between the terminal and the network is based on the lower three layers of the OSI (Open System Interconnection) reference model well known in the communication system technology, the first layer (L1), the second layer (L2), And the third layer (L3).

  The first layer (L1) provides an information transmission service using a physical channel, and a radio resource control (RRC) layer located in the third layer (L3) is a radio between the terminal and the network. Responsible for controlling resources. For this purpose, the RRC layer exchanges RRC messages between the terminal and the network. The RRC layer may be distributed among network nodes such as eNode B and AG, or may be located only in eNode B or AG.

  FIG. 2 is a diagram showing the structure of the control plane of the radio access interface protocol between the terminal and the UTRAN in conformity with the 3GPP radio access network standard.

  The radio access interface protocol includes a horizontal layer including a physical layer, a data link layer, and a network layer, a user plane for transmitting data information, and a vertical plane including a control plane for transmitting control signals. .

  The protocol layer is divided into a first layer (L1), a second layer (L2), and a third layer (L3) based on the lower three layers of the OSI reference model well known in the communication system technology. Can do. Hereinafter, each layer of the wireless protocol control plane of FIG. 2 and the wireless protocol user plane of FIG. 3 will be described.

  The physical layer as the first layer provides an information transmission service to an upper layer using a physical channel. The physical layer is connected to a medium access control (MAC) layer positioned above via a transport channel, and data transmission between the MAC layer and the physical layer is performed via the transport channel. Is called. Data transmission is performed via physical channels between different physical layers, that is, between the transmission-side physical layer and the reception-side physical layer.

  The MAC layer of the second layer provides services to a radio link control (RLC) layer, which is an upper layer, via a logical channel. The second RLC layer supports reliable data transmission. The function of the RLC layer can be realized as a functional block inside the MAC layer. In this case, the RLC layer may not exist. The second PDCP layer is configured to efficiently transmit data transmitted using IP packets such as IPv4 or IPv6 via a wireless interface having a relatively small bandwidth. A header compression function that reduces unnecessary control information is executed.

  The RRC layer located at the lowest level of the third layer (L3) is defined only in the control plane, and is associated with the logical channel, transport channel, and physical in connection with the setting, reconfiguration, and release of the radio bearer (RB). Control the channel. Here, the RB means a service provided by the second layer (L2) for data transmission between the terminal and the UTRAN.

  Downlink transport channels that transmit data from a network to a terminal include a BCH (Broadcast Channel) that transmits system information and a downlink SCH (Shared Channel) that transmits user traffic or control messages. Downlink multicast, broadcast service traffic, or control messages can be transmitted on the downlink SCH or a separate downlink MCH (Multicast Channel).

  Uplink transport channels that transmit data from the terminal to the network include RACH (Random Access Channel) that transmits initial control messages, and uplink SCH that transmits user traffic or control messages.

  Conventionally, due to the mobility of the mobile terminal, it is no longer possible to connect to the gateway (ie AG) for traffic transmission that is currently connected and used by the mobile terminal, or the gateway cannot be maintained in other operational aspects. In this case, the mobile terminal changes the connection to a gateway suitable for the moved base station.

  However, in this respect, the change to a new gateway increases network traffic congestion due to context information exchanged between gateways, transmission of signaling messages between many base stations and gateways, and the like.

  According to one aspect of the present invention, there is provided a traffic transmission path resetting method for a mobile terminal capable of optimizing transmission of a signaling message and minimizing network congestion when the mobile terminal changes a gateway for traffic transmission. It is to provide.

  In order to realize at least the above-described features in whole or in part, the present invention provides the second radio network node most when a mobile terminal performs a handover from the first radio network node to the second radio network node. Determining a gateway for suitable traffic processing; changing a traffic transmission path to the determined gateway; and a traffic transmission node passing traffic to the second wireless network node in the changed traffic transmission path. And a traffic transmission path resetting method in a mobile communication system.

  The first radio network node is a base station to which the mobile terminal is currently connected and receives a service, and the second radio network node is a base station to which the mobile terminal moves and receives a service .

  In the traffic transmission path resetting method, the step of changing the traffic transmission path includes the step of the second radio network node transmitting a reset request message to the determined first gateway, and the reset request message. The received first gateway sends a route optimization request message to the gateway from which the terminal previously received the service; the second gateway sends a response message to the first gateway; Informing the traffic sending node that the traffic path has been changed.

  The reset request message includes context information of the terminal such as authentication information, security information, and compression related information of the mobile terminal.

  The route optimization request message includes context information and identification information about the terminal.

  In response to the response message, the first gateway registers the terminal in a terminal list managed by the first gateway itself, the second gateway deletes context information regarding the terminal, and the second gateway itself manages The terminal is deleted from the terminal list to be used.

  Objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

  One aspect of the present invention relates to the inventors' recognition of the prior art problems described above and further described below. The features of the present invention were developed based on this recognition.

  The present invention is realized in a mobile communication system such as UMTS developed under the 3GPP standard. However, the present invention can also be applied to communication systems compliant with other standards and standards.

  As network technology continues to evolve, enhanced capability Node Bs or other types of network entities (eg, so-called access gateways) can be responsible for operations performed by existing RNCs, and in future networks RNCs Is expected to be no longer needed. Such Long Term Evolution (LTE) issues are under development to allow new terminals (or set up new user links) as well as for more terminals managed by the network. Further support the need for the development of improved radio admission control technology used to support the enhanced services.

  According to the present invention, when the access gateway (AG) of a wireless network to which the mobile terminal is currently connected is changed due to the mobility of the wireless terminal, traffic transmission capable of minimizing network traffic congestion and unnecessary signaling process is achieved. Provides a route reconfiguration method.

  That is, when the wireless communication system changes the connection from the first wireless network node to which the mobile terminal is currently connected to the second wireless network node, the gateway node for traffic processing most suitable for the second wireless network node Is changed or newly set to optimize transmission efficiency.

  The first radio network node is a base station node source eNB to which the mobile terminal is currently connected and receiving a service, and the second radio network node is a base on which the mobile terminal moves and receives a service It is preferably a station node target eNB.

  FIG. 4 is a diagram showing an example of a network structure model for explaining an example of the resetting method according to the present invention, that is, an example of a basic network configuration related to AG resetting.

  As shown in FIG. 4, an Inter-AS (Inter-Autonomous System) 100 is an upper network node, and a service transmitted to a terminal is an AG (sAG 200 and a traffic transmission node) 100 via tAG210). The Inter-AS 100 can serve as an anchor for interworking with other networks. Alternatively, a network node positioned above the AG and serving as an anchor for linking with other networks can play the role of the Inter-AS 100. The AGs are connected directly or indirectly to each other. That is, the two AGs are connected to each other with or without other network nodes in between.

  The sAG (source AG) 200 is an AG that is currently connected to a terminal and receiving a service. The sAG 200 includes information regarding the terminal. The information on the terminal includes authentication information, security information, compression related information, service information, and TA (Tracking Area) information. The sAG 200 includes PDCP, security related protocols, and compression related protocols for the terminal.

  The tAG (target AG) 210 is an AG that moves after the terminal moves to the teNB 310, and the seNB 300 is a base station node that the terminal is connected to and receives a service. Radio resources are allocated to the terminal via the base station, and traffic is transmitted via a radio interface. When the terminal intends to move from the seNB 300 to the teNB 310, the terminal leaves the seNB 300 and newly connects to the teNB 310 (that is, the terminal disconnects from the seNB and newly connects to the teNB). Here, the teNB basically has an interface (X2) connected to the seNB 300, thereby enabling packet transmission between the eNBs. One eNB can perform packet transmission via an interface on a plurality of AGs (S1).

  FIG. 5 is a diagram illustrating an example of traffic (for example, packet) transmission between eNBs when the terminal moves from the seNB 300 to the teNB 310. As illustrated in FIG. 5, when the terminal moves from the seNB 300 to the teNB 310, packets are transmitted between the seNB 300 and the teNB 310 until the teNB 310 receives the handover completion and the handover is completed after the seNB 300 transmits a handover command to the terminal. Transmission is performed.

  FIG. 6 is a diagram illustrating traffic transmission from the sAG 200 to the teNB 310 when the terminal moves from the seNB 300 to the teNB 310. FIG. 6 illustrates a case where when the terminal completes the handover and moves to the teNB 310, the route from the sAG 200 is updated, and traffic is transmitted directly to the teNB instead of the seNB.

  FIG. 7 is a diagram illustrating traffic transmission when the terminal moves from the seNB 300 to the teNB 310 but there is no route between the sAG 200 and the teNB 310. FIG. 7 shows that when the terminal moves from the seNB 300 to the teNB 310, but there is no route directly connected from the sAG 200 to the teNB 310, or when it cannot be directly connected due to other problems, the traffic is transmitted via the tAG 210 to which the teNB 310 can be connected. Indicates that will be done.

  In the case of FIGS. 6 and 7, additional traffic transmission delay may occur because the traffic is transmitted to the terminal through another route instead of the optimized route. In addition, problems related to traffic transmission may occur depending on traffic load, sAG capacity, and the like.

  Therefore, as shown in FIG. 8, traffic must be transmitted on the optimized path by retransmitting the gateway (ie, “tAG”) most suitable for the eNB to which the terminal is connected.

  FIG. 8 is a diagram illustrating an example of optimal AG reconfiguration and traffic transmission to the teNB 310 when the terminal moves from the seNB 300 to the teNB 310.

  FIG. 9 shows a packet transmission route optimization method by AG reconfiguration, particularly a method for reconfiguring AG in the traffic transmission process shown in FIGS.

  Referring to FIG. 9, the terminal is in a state of receiving or transmitting traffic in an active mode. When the terminal moves from seNB to teNB and handover is executed, the terminal receives traffic through the seNB (FIG. 5: Inter AS100 → sAG200 → seNB300 → teNB310 → terminal).

  When the handover is completed, the terminal receives traffic directly from the teNB via the sAG (FIG. 6: Inter AS100 → sAG200 → teNB310 → terminal) or receives traffic via the new AG, tAG. (FIG. 7: Inter AS100 → sAG200 → tAG210 → teNB310 → terminal).

  Thereby, the teNB 310 first checks the activity status of the terminal, that is, the traffic transmission or reception state. In this case, the terminal is in an active mode for transmitting or receiving traffic, or in a pseudo-active mode that is active but has little or no traffic to transmit or receive. The pseudo active mode is similar to the idle mode, but differs from the idle mode in that the UE UE context of the terminal exists and is maintained in the connected eNB. In the following, it is assumed that traffic transmission / reception is temporarily stopped while the terminal is transmitting / receiving traffic in the active mode, and the terminal is changed to the pseudo active mode. When it is confirmed that the terminal is in the pseudo active mode, the teNB 310 determines the most effective AG (eg, tAG) (considering characteristics such as traffic route optimization, traffic load, and user load). The AG reconfiguration request message is transmitted to the tAG 210 (S10).

  The AG reconfiguration request message includes a UE context related to the terminal. The UE context information includes authentication information, security information, and compression related information. The AG reconfiguration request message includes additional UE context information as well as other types of information. In this case, the terminal is changed to the idle mode or the pseudo active mode is maintained. For this reason, the teNB 310 can transmit a request message for changing or maintaining the state of the terminal to the terminal.

  The tAG 210 that has received the AG reconfiguration request message from the teNB 310 transmits an AG route optimization request message to the sAG (S11). Here, the AG route optimization request message includes UE context information and identification information, and includes authentication information and security information as necessary.

  The sAG 200 that has received the AG route optimization request message transmits an AG route optimization response message including context information such as authentication information and security information about the terminal to the tAG (S12). The tAG 210 that has received the AG route optimization response message can register or attach the terminal to the terminal list of the tAG (managed by the tAG itself). The sAG 200 can delete or separate the context information regarding the terminal and remove the terminal from the terminal list managed by the sAG. Alternatively, the sAG can maintain a part or all of the UE context information.

  The sAG 200 requests the inter-AS 100 or a server related to traffic distribution or service provision within the network to change the route for traffic transmission from the terminal to the tAG 210 instead of the sAG 200 by the route change message ( S13).

  The Inter-AS 100 that has received the path change message confirms the traffic status (traffic load and the like), changes the traffic transmission path of the service, and starts traffic transmission for the terminal via the tAG 210 instead of the sAG 200. be able to. As a result, the traffic is directly transmitted from the Inter-AS 100 to the teNB 310 via the tAG 210, and is provided to the terminal through an optimized route. Further, the traffic transmission path can be changed even if it is set in advance, when the traffic load condition changes significantly (for example, when the traffic load is larger than a preset threshold).

  Subsequent AG reset request by route change will be described in detail with reference to FIG.

  The basic assumption and process in FIG. 10 follow the process of FIG. That is, the first stage and the second stage of FIG. 9 are performed in the same manner as in FIG. In the third stage, the tAG 210 receives the AG route optimization response message and confirms the AG route optimization request. In the fourth stage, the tAG 210 transmits the route change message to the Inter-AS 100 upon receipt of the AG route optimization request. The Inter-AS 100 that has received the path change message confirms the traffic status (traffic load and the like), changes the traffic transmission path of the service, and starts traffic transmission for the terminal via the tAG 210 instead of the sAG 200. . Thereby, traffic is provided to the said terminal by the optimization path | route by transmitting to tAG210 via Inter-AS100 and transmitting directly to teNB310.

  11 and 12 are diagrams illustrating an AG reconfiguration process by the terminal.

  In FIG. 11 and FIG. 12, a terminal (UE) 410 that has moved from the seNB 300 to the teNB 310 receives network-related information or system information via the teNB 310. The network related information may include an identifier for identifying an area or a node managed by the network. Since the terminal has moved from the network (from which it originally belonged) to another network, it is currently located in the other network, and the identifier included in the received network-related information is different from the previous identifier. Upon confirming the identifier, the terminal transmits an AG reconfiguration request message to the teNB in order to notify that it is necessary to newly move to the network (teNB) and set a new route. The teNB 310 that has received the AG reconfiguration request message transmits an AG reconfiguration request message that notifies the tAG 210 that terminal registration and AG reconfiguration are necessary.

  The tAG 210 that has received the AG reconfiguration request message transmits an AG route optimization request message to the sAG 200. The sAG 200 that has received the AG route optimization request message from the tAG 210 transmits a response to the AG route optimization request message to the tAG 210.

  In FIG. 11, after receiving the AG route optimization request message, the sAG 200 transmits a route change message to the Inter-AS 100. In FIG. 12, after receiving a response to the AG route optimization request message from the sAG 200, the tAG 210 transmits a route change message to the Inter-AS 100.

  As described above, when the mobile terminal 410 is connected to the second radio network node (teNB) 310 while being connected to the first radio network node (seNB) 300, the gateway most suitable for the second radio network node Is reconfigured and traffic is transmitted through the optimized route, it is possible to reduce network congestion and unnecessary signaling processes that have occurred in the prior art.

  FIG. 13 is a structural diagram showing an example of a mobile communication terminal according to the present invention.

  As shown in the figure, a mobile communication terminal 500 transmits and / or receives data in a mobile communication system for transmitting and / or receiving data on a traffic path via a wireless link (Wi-Fi, Wi-Max, Wi-Bro, etc.). 550, a storage device 540 for storing data transmitted or received via the transceiver or from an external source, and an optimized traffic path during or after handover from the source Node B to the target Node B And a processor 510 for transmitting a request for an optimized traffic path to the network to determine and receiving data on the optimized traffic path from the network.

  There are other components in the mobile communication terminal, but these details will not be described in order to clarify the features of the present invention.

  The present invention includes a step of transmitting a reconfiguration request from a target Node B (e.g., teNB) to a target access gateway, a step of transmitting a route optimization request from the target access gateway to a source access gateway, and the target access gateway. Transmitting a route change request from at least one of the source access gateways to an upper entity, setting an optimized route by the upper entity for data transmission between the terminal and the upper entity, and a traffic load condition If there is a large change in the network, information on network related information and / or system information including an identifier defining a domain and / or a node managed by the network is reset. B transmitting to the terminal; transmitting a request for changing or maintaining a terminal state to the terminal; and transmitting a response to the route optimization request from the source access gateway to the target access gateway. And based on the response received by the target access gateway, the terminal is added to the list of target access gateways and / or based on the response received by the target access gateway, the terminal is added to the source access gateway. A method of reconfiguring an access gateway (AG) in a mobile communication system comprising a network entity and at least one terminal. Here, the reset request is an AG reset request message, the route optimization request is an AG route optimization request message, and the route change response is an AG route change message. The higher-order entity (eg, higher-order node, Inter-AS) is configured to use the optimized route based on the traffic load condition determined by at least one of a traffic overload situation, a user overload situation, and a capacity of the access gateway. To decide. At least one of the source access gateway and the target access gateway includes information regarding the terminal regarding at least one of authentication information, security information, compression related information, service information, and TA information. The steps are performed when the terminal is in the pseudo active mode. The reset request includes information related to the terminal regarding at least one of authentication information, security information, compression related information, service information, and TA information. The route optimization request includes at least one of a terminal context, identification information, authentication information, and security information.

  The present invention also includes the step of determining whether or not the traffic route needs to be reset, the step of detecting the terminal mode when the traffic route needs to be reset, and the terminal entering the active mode. A method for reconfiguring an access gateway (AG) in a mobile communication system, comprising: transmitting a mode change request to the terminal, and setting an optimized traffic path when the terminal is in an inactive mode. provide. Here, the inactive mode is at least one of a pseudo active mode and an idle mode.

  Further, the present invention includes a step of transmitting a request for an optimized traffic route to the target Node B, which is a network, during or after the handover from the source Node B (NB) to the target Node B, and the network. Receiving data on the optimized traffic route from the target Node B to the target access gateway, the network sending a reconfiguration request from the target access gateway to the source access gateway. Transmitting a route change request from at least one of the target access gateway and the source access gateway to an upper entity, and for transmitting data, the upper entity By setting a reduction traffic route, to determine the optimized traffic path, the terminal in the mobile communication system provides a method for performing re-configuration of the access gateway (AG). Here, the transmitting is performed when the terminal is in an inactive mode, and the upper entity is a network node or an Inter-AS.

  Although the present invention has been described in the context of mobile communications, it is also applicable to other wireless communication systems that use mobile devices such as PDAs and laptop computers with wireless communication capabilities (ie, interfaces). In addition, the specific terms used to describe the present invention are not intended to limit the scope of the present invention to a particular type of wireless communication system. Furthermore, the present invention also applies to other wireless communication systems using other air interfaces and / or other physical layers, such as TDMA, CDMA, FDMA, WCDMA, OFDM, EVDO, Wi-Max, Wi-Bro. it can.

  The present embodiment can be realized as a manufacturing method, apparatus, or product using a standard program and / or engineering technique for producing software, firmware, hardware, or a combination thereof. Here, the term “product” refers to hardware logic (eg, integrated circuit chip, FPGA (Field Programmable Gate Array), ASIC (Application Specific Integrated Circuit), etc.), computer readable medium (eg, magnetic recording medium (eg, , Hard disk drive, floppy (registered trademark) disk, tape, etc.), optical recording device (CD-ROM, optical disk, etc.), or volatile / nonvolatile memory device (eg, EEPROM, ROM, PROM, RAM, DRAM, SRAM) , Firmware, program logic, etc.).

  Code in the computer readable medium is connected and executed by a processor. The code for executing this embodiment can be connected through a transmission medium or from a file server on a network. In that case, the product in which the code is executed includes a transmission medium such as a network transfer line, a wireless transmission medium, a signal propagating in the air, a radio wave, and an infrared signal. Of course, a person having ordinary knowledge in the technical field can make various modifications of the configuration without departing from the gist of the present invention, and the product includes a known information transmission medium. You will understand that you can.

  The present invention can be implemented in various forms as long as they do not depart from the spirit and basic characteristics of the present invention, and the above-described embodiments are not limited by the above-described detailed description. It should be construed broadly within the spirit and scope defined in the appended claims, and all changes and modifications made within the scope of the claims, or equivalents, are included in the claims.

The accompanying drawings, which are included to aid the understanding of the present invention and constitute a part of this specification, illustrate various embodiments of the present invention and together with the description, explain the principles of the invention.
It is a figure which shows an example of the network structure of E-UMTS which is a mobile communication system with which a prior art and the said mobile terminal are applied. It is a figure which shows an example of the structure of the control plane of the radio | wireless interface protocol between the terminal based on the standard of 3GPP radio | wireless access network, and UTRAN. It is a figure which shows an example of the structure of the user plane of the radio | wireless interface protocol between the terminal based on the standard of 3GPP radio | wireless access network, and UTRAN. It is a figure which shows an example of the network structure model for demonstrating the resetting method by this invention, ie, a basic network structure relevant to AG resetting. It is a figure which shows an example of the traffic (for example, packet) transmission between eNBs when a terminal moves from seNB to teNB. It is a figure which shows the traffic transmission from sAG when a terminal moves from seNB to teNB. It is a figure which shows traffic transmission in case a terminal moves from seNB to teNB but there is no route between sAG and teNB. It is a figure which shows an example of the reset of optimal AG to tNB and a traffic transmission in case a terminal moves from seNB to teNB. It is a figure which shows the packet transmission path reset method by this invention. It is a figure which shows the method of resetting a packet transmission path | route by AG reset request | requirement by a subsequent path | route change. It is a figure which shows the AG reset process by a terminal. It is a figure which shows the AG reset process by a terminal. It is a figure which shows an example of the structure of the mobile communication terminal by this invention.

Claims (17)

In a mobile communication system having a network entity and at least one terminal, a method for reconfiguring a traffic transmission path during or after a handover process comprising :
The method
Transmitting a reset request from the target Node B to a target access gateway,
And transmitting a route optimization request from the target access gateway to a source access gateway,
And transmitting a path change request from at least one to a higher entity of the target access gateway and the source access gateway,
The upper entity establishes an optimized traffic transmission path between the terminal and the upper entity, and the upper entity includes an Inter-AS (Inter-AS) positioned above the access gateway (AG). Autonomous System),
Sending a response to the route optimization request from the source access gateway to the target access gateway;
Add a terminal to the list of target access gateways based on the response received by the target access gateway, or from the list of source access gateways based on the response sent from the source access gateway and we are removing the terminal, method. After or during execution of the source Node B is running a handover to the target Node B, by the target Node B, further comprising receiving a request for reconfiguration from the terminal, claims The method according to 1. The higher layer entity determines the optimized path based on the traffic load conditions, method according to claim 1. The traffic load conditions, traffic overload situation, a user overload situation, and is determined by at least one of the capacity of the access gateway method according to claim 3. Wherein if the traffic load conditions change significantly, further comprising re-establishing the optimized route, The method of claim 3. The reconfiguration request is AG reconfiguration request message, the route optimization request is an AG path optimization request message, the path change response is AG path change message, The method of claim 1 . The source Node least one of B and the target Node B is improved Node B; a (enhanced Node B eNB), The method of claim 2. Wherein the target Node B, further comprising transmitting a network-related information and / or system information to the terminal, method of claim 2. Wherein the network related information comprises an identifier that defines the domain and / or nodes are managed by a network, the method according to claim 8. Step, the terminal is performed when a pseudoaneurysm active mode, the method according to claim 1. Further comprising the method of claim 1 to send a request to change or maintain the terminal state in the terminal. The reconfiguration request, the authentication information, security information, including information on the terminal for at least one of the compression-related information, service information, and TA (Tracking Area) information, The method of claim 1. The route optimization request, the terminal context, identification information, authentication information, and includes at least one of security information, The method of claim 1. The response includes at least one of permission authentication information and security information, the method according to claim 1. A method for resetting a traffic transmission path in a mobile communication system ,
The method
And transmitting from a source Node B (NB) to during or after the execution running a handover to a target Node B, the request to the target Node B for optimization traffic route network,
And a receiving data through the optimized traffic path from the network,
The network is
Sending a reconfiguration request from the target Node B to the target access gateway ;
Sending a route optimization request from the target access gateway to the source access gateway ;
And transmitting a path change request from at least one to a higher entity of the target access gateway and the source access gateway,
The upper entity establishes an optimized traffic transmission path between the terminal and the upper entity, and the upper entity includes an Inter-AS (Inter-AS) positioned above the access gateway (AG). Autonomous System),
Sending a response to the route optimization request from the source access gateway to the target access gateway;
Add a terminal to the list of target access gateways based on the response received by the target access gateway, or from the list of source access gateways based on the response sent from the source access gateway Removing the terminal and
By performing, determining the optimized traffic path, method. Step of transmitting, the terminal is made when in the inactive mode, the method of claim 15. In a mobile communication system a mobile terminals you send and receive data over the traffic routes,
The mobile terminal
A transceiver adapted to transmit or receive data; and
A memory adapted to store data transmitted or received from or external source via the transceiver,
With processor
Including
The processor works in conjunction with the transceiver and the memory,
Transmitting from a source Node B (NB) to during or after the execution running a handover to a target Node B, a request for optimization traffic route network,
And receiving the data through the optimized traffic path from the network are adapted to the row Migihitsuji,
The network is
Sending a reconfiguration request from the target Node B to the target access gateway ;
Sending a route optimization request from the target access gateway to the source access gateway ;
And transmitting a path change request from at least one to a higher entity of the target access gateway and the source access gateway,
The upper entity establishes an optimized traffic transmission path between the terminal and the upper entity by the upper entity, and the upper entity is an Inter-AS (Inter-AS) located above the access gateway (AG). Autonomous System),
Sending a response to the route optimization request from the source access gateway to the target access gateway;
Add a terminal to the list of target access gateways based on the response received by the target access gateway, or from the list of source access gateways based on the response sent from the source access gateway Removing the terminal and
By performing, determining the optimized traffic path, the mobile terminal.

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