WO2016137174A1 - Appareil et procédé pour modifier de manière adaptative un chemin de données - Google Patents

Appareil et procédé pour modifier de manière adaptative un chemin de données Download PDF

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Publication number
WO2016137174A1
WO2016137174A1 PCT/KR2016/001704 KR2016001704W WO2016137174A1 WO 2016137174 A1 WO2016137174 A1 WO 2016137174A1 KR 2016001704 W KR2016001704 W KR 2016001704W WO 2016137174 A1 WO2016137174 A1 WO 2016137174A1
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WIPO (PCT)
Prior art keywords
terminal
data path
data
flow
apn
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PCT/KR2016/001704
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English (en)
Korean (ko)
Inventor
박중신
예긴알퍼
배범식
이진성
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Priority claimed from KR1020160016520A external-priority patent/KR20160102886A/ko
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of WO2016137174A1 publication Critical patent/WO2016137174A1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

Definitions

  • a 5G communication system or a pre-5G communication system is called a Beyond 4G Network communication system or a Long Term Evolution (LTE) system (Post LTE) system.
  • LTE Long Term Evolution
  • 5G communication systems are being considered for implementation in the ultra-high frequency (mmWave) band (eg, such as the 60 Gigabit (60 GHz) band).
  • mmWave ultra-high frequency
  • 60 GHz 60 Gigabit
  • beamforming, massive array multiple input / output (Full-Dimensional MIMO, FD-MIMO) in 5G communication systems Array antenna, analog beam-forming, and large scale antenna techniques are discussed.
  • 5G communication system has evolved small cells, advanced small cells, cloud radio access network (cloud RAN), ultra-dense network (ultra-dense network) , Device to device communication (D2D), wireless backhaul, moving network, cooperative communication, coordinated multi-points (CoMP), and interference cancellation
  • cloud RAN cloud radio access network
  • ultra-dense network ultra-dense network
  • D2D Device to device communication
  • wireless backhaul moving network
  • cooperative communication coordinated multi-points (CoMP), and interference cancellation
  • FQAM Hybrid Frequency Shift Keying and Quadrature Amplitude Modulation
  • SWSC sliding window superposition coding
  • ACM Advanced Coding Modulation
  • FBMC Filter Bank Multi Carrier
  • NOMA Non Orthogonal Multiple Access
  • SCMA Spar Code Multiple Access
  • the descriptions below can provide an apparatus and method for adaptively connecting to a packet data network (PDN), depending on the type of gateway (GW) available.
  • PDN packet data network
  • GW gateway
  • a method of operating a user equipment connected to an evolved node B may include a method in which the base station is not connected to a local gateway (L-GW).
  • it may include the step of generating a second data path for the second data flow using a second APN corresponding to the first APN, wherein the first data path, the change of the IP address
  • the impossible data path may be a path for the first data flow
  • the second data path may be a path for connecting the terminal and a packet data network (PDN) through the L-GW
  • the L-GW may include: With the PDN without using the core network (CN) GW can be for God.
  • an apparatus of a terminal connected to a base station may include a controller and at least one transceiver operatively coupled with the controller.
  • the controller may further include a second data flow capable of changing an internet protocol (IP) address using a first access point name (APN) when the base station is not connected to a local gateway (L-GW).
  • IP internet protocol
  • APN access point name
  • L-GW local gateway
  • the data path may be configured to generate a data path, wherein the first data path may be a path for a first data flow in which an IP address cannot be changed, and the second data path may be connected to the terminal through the L-GW.
  • Packet data network (PDN) A may be a path connecting the L-GW may be, the core network (CN, core network) and the PDN GW to communicate without the use of.
  • a method and apparatus for operating a terminal according to aspects related to a wireless environment may adaptively change data paths to efficiently transmit or receive data.
  • 1 is a diagram illustrating a network structure.
  • FIG. 2 is a diagram illustrating a state of a terminal using a pair of access point names (APNs).
  • APNs access point names
  • FIG. 3 is a diagram illustrating a signal flow between a terminal and a network element connecting to a new base station.
  • FIG. 4 is a diagram illustrating a signal flow between the terminal 110 and the network elements generating a new nomadic flow.
  • FIG. 5 is a diagram illustrating a signal flow between a terminal and network elements that switch from a first data path to a second data path.
  • FIG. 6 is a diagram illustrating an operation flow of a terminal connecting to a new base station.
  • FIG. 7 is a diagram illustrating an operation flow of a terminal initiating a new data flow.
  • FIG. 8 is a diagram illustrating an operation flow of a terminal for terminating a data flow.
  • FIG. 9 is a diagram illustrating a functional configuration of a terminal.
  • FIG. 10 is a diagram illustrating a functional configuration of a controller.
  • IPTO traffic offload of the architecture of the 3rd generation partnership project (3GPP) provides data between a packet data network (PDN) and a user equipment (UE) through a local gateway (L-GW).
  • a data path (hereinafter, referred to as a data path through the L-GW) is applied.
  • the L-GW may be located inside an evolved node B (eNB) or adjacent to the base station.
  • eNB evolved node B
  • the L-GW makes it possible to connect the PDN and the terminal without using a core network (CN).
  • CN core network
  • the architecture of the 3GPP applies a data path (hereinafter, referred to as a data path through the P-GW) between the PDN and the terminal through a packet data network gateway (P-GW).
  • a data path through the P-GW a data path through the P-GW
  • P-GW packet data network gateway
  • the data path through the L-GW may exchange traffic without using a core network (CN)
  • the data path may have a shorter data path than the data path through the P-GW.
  • the data path through the L-GW can exchange traffic without using the CN, latency can be reduced.
  • the data path through the LGW can exchange traffic without using the CN, it may have a small overhead.
  • the data path through the P-GW can be used for mobile flow or nomadic flow.
  • the mobile flow may be a data flow that does not authorize the change of the IP address.
  • the mobile flow may be voice over internet protocol (VoIP) calls, live video streaming, secure shell (SSH) access, and the like.
  • the nomadic flow may be a data flow for applying a change of an internet protocol (IP) address.
  • IP internet protocol
  • the nomadic flow may be a data flow for web browsing, video download, domain name server (DNS), instant messengers (IM), and the like.
  • the data path through the L-GW may be used only for nomadic flow. This is because the data path through the L-GW may be lost due to the mobility of the terminal.
  • the terminal in the current wireless environment, assume that the terminal is using nomadic flow through the data path through the L-GW, and assume that it has moved into coverage of another base station.
  • the other base station may be a base station not connected to the L-GW.
  • the nomadic flow of the current wireless environment cannot perform allocation of a new IP address due to the loss of the L-GW, the nomadic flow used by the terminal may be lost.
  • the terminal in the current wireless environment may use the L-GW only in a limited environment.
  • the data path can be used.
  • the following descriptions suggest a structure of a new access point name (APN).
  • the UE using the new APN structure can maintain nomadic flow regardless of whether the L-GW is available.
  • 1 is a diagram illustrating a network.
  • the network 100 includes a user equipment (UE) 110, an evolved node B (eNB) 120, a core network (CN) 130, a local gateway (L-GW) 170, and an IP service.
  • IP (internet protocol) service) 180 may include a peer (peer) 190.
  • the terminal 110 may be an apparatus for communicating with an entity (for example, a peer 190).
  • the terminal 110 may perform wide area network communication with the entity.
  • the terminal 110 may perform proximity communication with the entity.
  • the terminal 110 may be a device having mobility.
  • the terminal 110 is a mobile phone, a smart phone, a music player, a portable game console, a navigation system, a laptop computer, or the like. Can be.
  • the terminal 110 may also be referred to as a mobile station, a terminal, or the like.
  • the terminal 110 may be located within the coverage of the base station 120.
  • the terminal 110 may receive a wireless service from the base station 120.
  • the base station 120 may provide a wireless service to the terminal 110.
  • the base station 120 may provide control information so that the terminal 110 can communicate with the entity.
  • the base station 120 may perform a function of relaying the CN 130, the IP service 180, and the like so that the terminal 110 may communicate with the entity.
  • the base station 120 may be a fixed device.
  • the base station 120 may be referred to as a base station, an access point, or the like.
  • the CN 130 may assist communication of the terminal 110.
  • the CN 130 may perform authentication, charging, end-to-end connection management, and the like for the terminal 110.
  • the CN 130 may interwork several various wireless access technologies.
  • the CN 130 may assist communication of the terminal 110 by separating user data and control data or signaling data.
  • the CN 130 may include a mobility management entity (MME) 140, a serving gateway (S-GW) 150, and a packet data network gateway (P-GW) 160.
  • MME mobility management entity
  • S-GW serving gateway
  • P-GW packet data network gateway
  • the CN 130 may include a home subscriber server (HSS) having subscriber information.
  • HSS home subscriber server
  • the MME 140 may be a node that processes a control plane in the CN 130. For example, in order to assist communication of the terminal 110, the MME 140 may connect or disconnect a bearer for the terminal 110. For another example, the MME 140 may control the terminal 110 such that the terminal 110 transitions from an idle state to an active state. As another example, the MME 140 may manage a security key for the terminal 110.
  • the S-GW 150 may be a node that processes a user plane in the CN 130.
  • the S-GW 150 may support mobility of the terminal.
  • the S-GW 150 may support mobility between long term evolution (LTE) and one of global system for mobile communication (GSM), general packet radio service (GPRS), and high speed packet access (HSPA). Can be.
  • LTE long term evolution
  • GSM global system for mobile communication
  • GPRS general packet radio service
  • HSPA high speed packet access
  • the S-GW 150 may collect billing and statistical information.
  • the P-GW 160 may be a node connecting to a packet switched network such as the Internet in the CN 130. For example, the P-GW 160 may allocate an IP address to the terminal 110.
  • the L-GW 170 may support communication between the terminal and the IP service 180 without using the CN 130. For example, the L-GW 170 may allocate an IP address to the terminal 110.
  • the IP service 180 may be a node that provides an IP-based multimedia service and a mobile Internet service.
  • the IP service 180 may be a packet data network (PDN).
  • PDN packet data network
  • the peer 190 may be an entity communicating with the terminal 110.
  • the peer 190 may be a terminal.
  • the peer 190 may be an entity that exchanges traffic with the terminal 110 through a call.
  • the terminal 110 may exchange traffic with the IP service 180 (or the peer 190) through a data path 192.
  • the data path 192 may be a data path between the IP service 180 and the terminal 110 through the CN 130 (or the P-GW 160).
  • the data path 192 may be referred to as a first data path.
  • the terminal 110 may exchange traffic with the IP service 180 (or the peer 190) through the data path 194.
  • the data path 194 may be a data path between the IP service 180 and the terminal 110 through the L-GW 170.
  • the data path 194 may be referred to as a second data path.
  • the second data path may have a lower delay than the first data path.
  • the second data path may have a smaller overhead than the first data path.
  • the first data path may more flexibly correspond to the mobility of the terminal than the second data path.
  • the terminal 110 using the new APN structure may transmit or receive traffic by flexibly switching between the first data path and the second data path according to the state of the terminal 110.
  • the APN may be data (or string) for connection between the terminal 110 and the IP service 180.
  • the APN may include a network identifier and an operator identifier.
  • the terminal 110 may share the APN with the MME 140.
  • Table 1 below is an example showing the structure of the current APN for the Internet.
  • the attributes of the current APN's structure do not include an identifier for the type of data flow (eg nomadic flow or mobile flow). That is, the current APN structure does not include an identifier for tracking the lost nomadic flow according to the movement of the terminal. Therefore, the structure of the current APN has a structure in which the second data path is limited to be used.
  • Table 2 below and Table 3 below are examples showing the structure of a new APN (pair APNs) for the Internet.
  • Table 2 shows a structure of a mobile APN for the Internet
  • Table 3 shows a structure of a nomadic APN for the Internet.
  • the mobile APN of Table 2 may correspond to the nomadic APN of Table 3.
  • the mobile APN and the nomadic APN may be configured as one pair.
  • the mobile APN and the nomadic APNs may have a new APN value.
  • the mobile APN may have "mobile internet” as an APN value.
  • the nomadic APN may have "nomadic internet” as an APN value.
  • the new APN value may be a value for distinguishing between pair APNs.
  • the pair APNs may include a new attribute "Mobility Type".
  • the new attribute "Mobility Type” may be complementarily applied.
  • some of the paired APNs may not include “Mobility Type” as an attribute.
  • the mobile APN may be used for connection with the IP service 180 regardless of the type of data flow (eg, nomadic flow or mobile flow).
  • the mobile APN may be referred to as a first APN (or APN # 1).
  • the nomadic APN may be used for connection with the IP service 180 only when the type of data flow is nomadic flow.
  • the nomadic APN may be referred to as a second APN (or APN # 2).
  • the terminal 110 and the network elements may be aware of the existence of the pair APNs.
  • information about the pair APNs may be stored in the terminal 110 during the manufacturing process of the terminal 110.
  • the information about the pair APNs may be stored in the terminal 110 through a message received by the terminal 110 through a network entry procedure.
  • the terminal 110 and the network elements may transmit or receive traffic through various data paths using the paired APNs. For example, when the terminal 110 loses the second data path while transmitting or receiving traffic through the second data path using the second APN, the terminal 110 uses the first APN. The traffic that was transmitting or receiving through the first data path may be transmitted or received.
  • the terminal 110 and the network elements may use the pair APNs according to the rules shown in Table 4 below.
  • terminal 110 and the network elements may process APN configuration information according to the rules shown in Table 5 below.
  • the terminal 110 and the network elements can exchange traffic by dynamically switching data paths using the new APNs (or pair APNs). .
  • the state of the terminal may be the state of the terminal 110 shown in FIG. 1.
  • the terminal 110 is connected to the PDN by using a APN # 2 220, connected to the PDN by using a APN # 1 230, and connected to the PDN by using a APN # 1.
  • connected with the PDN by using a APN # 1 and connected with the another PDN by using a APN # 2) may be in one of 240 states.
  • the state 210 may mean a state in which the terminal 110 is not connected to any network.
  • the state 210 may mean that the terminal 110 is in an idle state.
  • the state 220 may mean a state in which the terminal 110 is connected to a PDN using a second APN.
  • the state 220 may be a state in which the terminal 110 establishes a nomadic flow with the IP service 180 using the second APN.
  • the state 220 may be a state in which the terminal 110 exchanges traffic with the IP service 180 using the second data path.
  • the state 230 may mean a state in which the terminal 110 is connected to a PDN using the first APN.
  • the state 230 may be a state in which the terminal 110 establishes a mobile flow with the IP service 180 using the first APN.
  • the state 230 may be a state in which the terminal 110 establishes a nomadic flow with the IP service 180 using the first APN.
  • the state 230 may be a state in which the terminal 110 exchanges traffic with the IP service 180 using the first data path.
  • the state 240 may refer to a state in which the terminal 110 is connected to a PDN using a first APN and connected to another PDN using a second APN.
  • the state 240 may be a state in which the terminal 110 sets the IP service 180 and a mobile flow using the first APN, and sets a nomadic flow with another IP service using the second APN.
  • the state 240 may be a state in which the terminal 110 exchanges traffic with the IP service 180 using the first data path and exchanges traffic with another IP service using the second data path. .
  • a transition 260 may refer to a state in which the terminal 110 performs a network entry through a base station connected to the P-GW and not connected to the L-GW.
  • the state change 261 may refer to a state in which the terminal 110 performs network entry through a base station connected to the P-GW and also connected to the L-GW.
  • the state change 262 may mean a state in which the terminal 110 terminates the connection with the network or a state in which the terminal 110 terminates the connection with the network.
  • the state change 263 may refer to a state in which the terminal 110 starts a new nomadic flow.
  • the state change 263 may mean a state in which the terminal 110 accesses the same P-GW as the P-GW connected to the serving base station and another base station connected to the L-GW different from the L-GW connected to the serving base station.
  • the state change 263 may mean a state in which the terminal 110 terminates the nomadic flow.
  • the state change 264 may refer to a state in which the terminal 110 starts a new mobile flow while the nomadic flow is on.
  • the state change 265 may refer to a state in which the terminal 110 starts a new mobile flow in a state where the nomadic flow does not proceed.
  • the state change 265 may mean a state in which the terminal 110 connects to another base station connected to the P-GW and not connected to the L-GW.
  • the state change 266 may mean a state in which the terminal 110 starts a new data flow.
  • the state change 266 may refer to a state in which the terminal 110 accesses the same P-GW as the P-GW connected to the serving base station and another base station connected to the L-GW different from the L-GW connected to the serving base station.
  • the state change 267 may mean a state in which the terminal 110 terminates the last nomadic flow.
  • the state change 267 may mean a state in which the terminal 110 connects to a base station connected to the P-GW and not connected to the L-GW.
  • the state change 268 may refer to a state in which the terminal 110 terminates the last mobile flow.
  • the state change 269 may mean a state in which the terminal 110 starts a new mobile flow.
  • the state change 269 may mean a state in which the terminal 110 in the coverage of the base station connected to the P-GW and not connected to the L-GW starts a new nomadic flow.
  • the state change 269 may mean a state in which the terminal 110 within the coverage of the base station connected to the P-GW and not connected to the L-GW terminates the data flow.
  • the state change 269 may mean a state in which the terminal 110 connects to another base station connected to the P-GW and not connected to the L-GW.
  • the state change 269 may refer to a state in which the terminal 110, which is in the mobile flow and is not in the nomadic flow, accesses a base station connected to the P-GW and the L-GW, respectively.
  • the state change 270 may refer to a state in which the terminal 110 in the coverage of the base station connected to the P-GW and the L-GW starts a new nomadic flow.
  • the state change 270 may refer to a state in which the terminal 110 which is undergoing nomadic flow and mobile flow, respectively, accesses a base station connected to the P-GW and the L-GW, respectively.
  • the state change 271 may mean a state in which the terminal 110 within the coverage of the base station connected to the P-GW and the L-GW terminates the last mobile flow.
  • the state change 271 may mean a state in which a terminal undergoing nomadic flow accesses a base station connected to a P-GW and an L-GW, respectively.
  • the state change 271 may refer to a state in which the terminal 110, which is undergoing nomadic flow and does not proceed with mobile flow, accesses a base station connected to the P-GW and the L-GW, respectively.
  • the terminal 110 may effectively start, maintain, or terminate the nomadic flow and the mobile flow regardless of the characteristics of network elements that provide the service to the terminal 110.
  • FIG. 3 is a diagram illustrating a signal flow between a terminal and a network element connecting to a new base station.
  • the signal flow may be generated by the terminal 110, the base station 120, the MME 140, and the P-GW 160 shown in FIG.
  • the terminal 110 may determine to connect with a PDN (eg, the IP service 180) by using the second APN (APN # 2) for nomadic flow.
  • the terminal 110 may be a terminal newly entering the network through the base station 120.
  • the terminal 110 may be a terminal performing a handover from the serving base station to the base station 120.
  • the terminal 110 may assume that the base station 120 is connected to the L-GW 170 according to the second rule (1) of Table 4. Assuming that the L-GW 170 is available, the terminal 110 may determine to connect with the PDN using the second APN among the pair APNs for the nomadic flow. In other words, the terminal 110 may determine to connect with the PDN through the second data path using the second APN.
  • the terminal 110 may transmit a first message to the MME 140 to request to connect with the PDN using the second APN.
  • the MME 140 may receive the first message from the terminal 110.
  • the MME 140 recognizes that the base station 120 is not connected to the L-GW 170. In other words, the MME 140 recognizes that the L-GW 170 is not available.
  • the MME 140 recognizes a first APN corresponding to the second APN among pair APNs.
  • the MME 140 may transmit a second message to the terminal 110 informing that the terminal 110 connects to the PDN using the first APN.
  • the MME 140 may transmit, to the terminal 110, the second message for notifying the connection with the PDN using the first APN according to the second rule (2) of Table 4.
  • the MME 140 may transmit a second message to the terminal 110 to inform the PDN to connect to the PDN through the first data path using the first APN.
  • the terminal 110 may receive the second message from the MME 140.
  • the terminal 110 may connect with the PDN through the P-GW 160 based on the second message.
  • the terminal 110 may recognize that the base station 120 is a base station not connected to the L-GW through the second message.
  • the terminal 110 may connect with the PDN through the P-GW 160 using the first APN.
  • the terminal 110 may connect with the PDN through the first data path using the first APN.
  • the terminal 110 uses the first APN corresponding to the second APN, without losing the nomadic flow, the first data path Can be generated.
  • the terminal 110 may transmit or receive traffic for the nomadic flow using the first data path through the procedure illustrated in FIG. 3.
  • FIG. 4 is a diagram illustrating a signal flow between the terminal 110 and the network elements generating a new nomadic flow.
  • the signal flow may be generated by the terminal 110, the base station 120, the MME 140, the P-GW 160, and the peer 190 shown in FIG. 1.
  • the MME 140 may transmit an indication message indicating that the L-GW 170 is in an unavailable state to the terminal 110.
  • the MME 140 may transmit the indication message to the terminal 110 through a network entry procedure.
  • the MME 140 may transmit information to the terminal 110 by including a information indicating that the L-GW 170 is not available in a handover command message of the handover procedure of the terminal 110. have.
  • Information for notifying that the L-GW 170 is in an unavailable state may be included in the handover command message in the form of "true / false".
  • the handover command message may inform the terminal 110 that the L-GW 170 is not available through one bit (eg, “1” or “0”).
  • the terminal 110 may receive the indication message from the MME 140.
  • the terminal 110 may connect with the PDN (eg, the IP service 180) through the P-GW 160 based on the indication message.
  • the terminal 110 may recognize through the indication message that the base station 120 connected to the terminal 110 is a base station not connected to the L-GW 170.
  • the terminal 110 can connect with the PDN through the P-GW 160 using the first APN.
  • the terminal 110 may connect with the PDN through the first data path using the first APN.
  • step S420 the terminal 110 may initiate a new data flow (new nomadic flow).
  • the terminal 110 may recognize that the base station 120 serving the terminal 110 is not connected to the L-GW 170 through the received indication message. Accordingly, the terminal 110 may recognize that the nomadic flow should be processed using the first APN instead of the second APN despite generating the nomadic flow.
  • step S440 the terminal 110 may use a traffic flow through the P-GW 160 for the nomadic flow to be initiated.
  • the terminal 110 may transmit traffic to or receive traffic from the peer 190 through the first data path.
  • FIG. 5 is a diagram illustrating a signal flow between a terminal and network elements that switch from a first data path to a second data path.
  • the signal flow may be generated in the terminal 110, the base station 120, the MME 140, the P-GW 160, the L-GW 170, and the peer 190 shown in FIG.
  • step S500 for the nomadic flow, the terminal 110 and the peer 190 may use the traffic flow through the P-GW 160. In other words, for the nomadic flow, the terminal 110 and the peer 190 may use the traffic flow through the first data path.
  • the terminal 110 may move to a new base station.
  • the new base station may be the base station 120.
  • the base station 120 may be a base station connected to the L-GW 170.
  • the terminal 110 may move to a base station that can use the L-GW 170.
  • the terminal 110 may transmit a first message to the MME 140 requesting to create the second data path using the second APN for the nomadic flow in progress in step S500.
  • the terminal 110 may assume that the L-GW 170 is available. In other words, the terminal 110 may assume that the base station 120 is connected to the L-GW 170 according to the second rule (4) of Table 4 above.
  • the terminal 110 may transmit the first message to the MME according to the assumption. Since the second rule (4) of Table 4 may be optional, in some embodiments, the terminal 110 generates the first data path using the first APN corresponding to the second APN.
  • the first message to request may be sent to the MME 140.
  • the MME 140 may receive the first message from the terminal 110.
  • the MME 140 may transmit a second message for notifying (or indicating) to connect to the PDN using the second APN to the terminal 110.
  • the terminal 110 transmits the first message to the MME 140 according to the second rule (4) of Table 4 (that is, the terminal 110 generates the second data path using the second APN).
  • the second message may be a message for accepting the first message.
  • the terminal 110 transmits the first message to the MME 140 differently from the second rule (4) of Table 4 (that is, the terminal 110 uses the first APN to transmit the first data).
  • the second message may be a message indicating to generate the second data path using the second APN, unlike the request through the first message.
  • the terminal 110 may receive the second message from the MME 140.
  • the terminal 110 may connect with the PDN (eg, the IP service 180) through the L-GW 170 based on the second message.
  • the terminal 110 may generate the second data path between the PDN and the terminal 110 based on the second message.
  • the terminal 110 may perform an operation for terminating the connection with the PDN through the P-GW 160 with the MME 140.
  • the terminal 110 may perform an operation for terminating the first data path associated with the traffic flow in step S500 with the MME 140.
  • step S560 the terminal 110 may release the connection with the PDN through the P-GW 160 based on the operation in step S550. In other words, the terminal 110 may terminate the first data path between the terminal 110 and the PDN based on the operation in step S550.
  • step S570 the terminal 110 may delete the information related to the IP for the first APN stored in the terminal 110. Since the second data path is generated in step S540, and the first data path is terminated in step S560, the terminal 110 may delete information related to the IP for the first APN stored in the terminal 110. .
  • the terminal 110 may move from the IP address for the first APN to the IP address for the second APN corresponding to the first APN. In other words, the terminal 110 may determine an IP address for the second APN corresponding to the first APN.
  • the terminal 110 may generate a traffic flow with the peer 190 based on the determined IP address for the second APN.
  • the terminal 110 may transmit the traffic for the nomadic flow to the peer 190 through the L-GW 170 or receive the traffic for the nomadic flow from the peer 190 using the second APN.
  • the terminal 110 may adaptively switch a data path in response to the state change. .
  • the terminal 110 may switch from the first data path to the second data path for more efficient transmission or reception of traffic.
  • FIG. 6 is a diagram illustrating an operation flow of a terminal connecting to a new base station. The operation flow may be performed by the terminal 110 shown in FIG. 1.
  • the terminal 110 may connect (or connect with a new base station) a new base station.
  • the terminal 110 may be a terminal connecting to the new base station through a handover procedure.
  • the new base station may be the base station 120 illustrated in FIG. 1.
  • step S610 the terminal 110 may determine whether there is a data flow (for example, mobile flow) currently in progress. If there is no mobile flow currently in progress and there is a nomadic flow currently in progress, the terminal 110 may perform the operation of step S640. If there is a current mobile flow, the terminal 110 may perform the operation of step S615. Although not shown in FIG. 6, when there is no nomadic flow currently in progress, the terminal 110 may terminate the operation flow illustrated in FIG. 6.
  • a data flow for example, mobile flow
  • the terminal 110 may maintain a connection between the terminal 110 and the PDN through the P-GW 160 using the first APN (APN # 1). In other words, the terminal 110 may maintain the first data path using the first APN. The terminal 110 may transmit traffic to or receive traffic from the PDN using the first data path.
  • APN APN # 1
  • step S620 the terminal 110 may determine whether there is a newly started data flow (eg, nomadic flow). If there is no newly started nomadic flow, the terminal 110 may terminate the operation flow shown in FIG. 6. If there is a newly started nomadic flow, the terminal 110 may perform the operation of step S625.
  • a newly started data flow eg, nomadic flow
  • the terminal 110 may determine whether the L-GW 170 is available.
  • the terminal 110 may recognize whether the L-GW 170 is available through a message received from the MME. For example, when the terminal 110 is connected to the base station 120 through a handover, the terminal 110 may receive a handover command message from the MME 140.
  • the handover command message may include information on whether the L-GW 170 is available (or whether the base station 120 is connected to the L-GW 170).
  • the terminal 110 may perform an operation in step S635. If the L-GW 170 is in an unavailable state, the terminal 110 may perform an operation in step S630.
  • the terminal 110 may connect with the PDN using the first APN (APN # 1) for the initiating nomadic flow. Since the L-GW 170 is not available, the terminal 110 may connect with the PDN using the first APN instead of the second APN for the nomadic flow. In other words, for the nomadic flow, the terminal 110 may generate the first data path using the first APN.
  • the first APN may be an APN corresponding to the second APN used by a base station to which the terminal 110 previously connected to the base station 120.
  • step S635 the terminal 110 may connect with the PDN using the second APN (APN # 2) for the nomadic flow.
  • the terminal 110 may generate the second data path by using the second APN for the nomadic flow.
  • step S640 the terminal 110 may determine whether the L-GW 170 is available. As described in step S625, the terminal 110 may recognize whether the L-GW 170 is available. If the L-GW 170 is available, the terminal 110 can perform the operation in step S650. If the L-GW 170 is not available, the terminal 110 may perform an operation in step S645.
  • step S645 the terminal 110 may maintain a connection with the PDN using the first APN (APN # 1) for the ongoing nomadic flow. Since the L-GW 170 is not available, the terminal 110 may maintain a connection with the PDN using the first APN instead of the second APN for the nomadic flow.
  • APN # 1 APN # 1
  • step S650 the terminal 110 may determine whether the first data path for the ongoing nomadic flow already exists. If the first data path for the ongoing nomadic flow exists, the terminal 110 may perform an operation in step S655. If the first data path for the ongoing nomadic flow does not exist, the terminal 110 may perform an operation in step S660.
  • step S655 the terminal 110 may terminate the connection with the PDN using the first APN. Since the L-GW 170 is available, the terminal 110 may terminate the connection with the PDN using the first APN according to the second rule (3) of Table 4.
  • step S660 the terminal 110 may connect with the PDN using the second APN.
  • the terminal 110 may connect with the PDN using the second APN for the ongoing nomadic flow.
  • the terminal 110 terminates the connection with the PDN using the first APN in step S655
  • the terminal 110 is the ongoing furnace
  • the second APN may be used to connect with the PDN.
  • the terminal 110 may generate the second data path using the second APN for the ongoing nomadic flow.
  • FIG. 7 is a diagram illustrating an operation flow of a terminal initiating a new data flow. The operation flow may be performed by the terminal 110 shown in FIG. 1.
  • step S700 the terminal 110 may determine whether there is a new nomadic flow. If there is a new nomadic flow, the terminal 110 may perform an operation in step S705. If there is no new nomadic flow and there is a new mobile flow, the terminal 110 may perform the operation in step S730. Although not shown in FIG. 7, when there is no new nomadic flow and no new mobile flow, the terminal 110 may terminate the operation flow illustrated in FIG. 7.
  • step S705 the terminal 110 may determine whether the terminal 110 is already connected to the PDN using the second APN (APN # 2). If the terminal 110 is already connected to the PDN using the second APN, the terminal 110 may terminate the operation flow illustrated in FIG. 6. In contrast, when the terminal 110 is not already connected to the PDN using the second APN, the terminal 110 may perform an operation of step S710.
  • step S710 the terminal 110 may determine whether the L-GW 170 is available.
  • the terminal 110 may determine whether the L-GW 170 is available through a message received from the MME 140 or the like. If the L-GW 170 is not available, the terminal 110 may perform the operation of step S712. If the L-GW 170 is available, the terminal 110 may perform an operation in step S715.
  • the terminal 110 may connect with the PDN through the P-GW 160 using the first APN. Since the L-GW 170 is not available, the terminal 110 may connect with the PDN through the P-GW 160 using the first APN despite the nomadic flow being initiated. In other words, the terminal 110 may generate a first data path for the initiated nomadic flow using the first APN.
  • the terminal 110 may connect with the PDN through the L-GW 170 using the second APN.
  • the terminal 110 may generate a second data path for the initiated nomadic flow using the second APN.
  • step S720 the terminal 110 may determine whether there is a pending mobile flow (ie, not newly started). If there is a pending mobile flow, the terminal 110 may maintain a connection to the pending mobile flow. In contrast, if there is no pending mobile flow, the terminal 110 may perform the operation in step S725.
  • the terminal 110 may terminate the connection with the PDN using the first APN. Since the connection with the PDN using the first APN is not currently used by the terminal 110, the terminal 110 terminates the connection with the PDN using the first APN according to the third rule of Table 4. can do. In other words, the terminal 110 may terminate the first data path generated using the first APN.
  • step S730 the terminal 110 may determine whether there is a connection with the PDN using the first APN already pending. If there is a connection with the PDN using the first APN, the terminal 110 may terminate the operation flow illustrated in FIG. 7. In contrast, when there is no connection with the PDN using the first APN, the terminal 110 may perform the operation in step S735.
  • the terminal 110 may connect with the PDN through the P-GW 160 using the first APN for the initiated mobile flow. In other words, the terminal 110 may generate the first data path using the first APN for the initiated mobile flow.
  • step S740 the terminal 110 may determine whether there is a nomadic flow pending (ie, not newly started). If there is no pending nomadic flow, the terminal 110 may terminate the operation flow illustrated in FIG. 7. In contrast, if there is a pending nomadic flow, the terminal 110 may perform the operation in step S745.
  • the terminal 110 may terminate the connection with the PDN using the second APN.
  • the terminal 110 may terminate the connection with the PDN using the second APN according to the third rule of Table 4. In other words, the terminal 110 may terminate the second data path that is not used.
  • FIG. 8 is a diagram illustrating an operation flow of a terminal for terminating a data flow. The operation flow may be performed by the terminal 110 shown in FIG. 1.
  • step S800 the terminal 110 may determine whether to terminate the mobile flow. When the mobile flow ends, the terminal 110 may perform the operation of step S805. On the contrary, in the case where the nomadic flow is terminated without ending the mobile flow, the terminal 110 may perform the operation of step S830. Although not shown in FIG. 8, if the data flow does not end, the terminal 110 may end the operation flow illustrated in FIG. 8.
  • step S805 the terminal 110 may determine whether the terminating mobile flow is the last mobile flow of pending mobile flows. When there is a mobile flow other than the terminating mobile flow (that is, not the last mobile flow), the terminal 110 may terminate the operation flow illustrated in FIG. 8. In contrast, when the terminating mobile flow is the last mobile flow, the terminal 110 may perform an operation of step S810.
  • step S810 the terminal 110 may determine whether there is a connection with the PDN using the second APN already pending. In other words, the terminal 110 may determine whether there is a second data path. If there is no second data path, the terminal 110 may perform an operation in step S815. In contrast, when there is the second data path, the terminal 110 may perform an operation in step S825.
  • step S815 the terminal 110 may determine whether the L-GW 170 is available. When the L-GW 170 is in an unavailable state, the terminal 110 may terminate the operation flow illustrated in FIG. 8 without ending the first data path according to the fifth rule of Table 4. Alternatively, if the L-GW 170 is available, the terminal 110 may perform the operation of step S820.
  • step S820 the terminal 110 may generate a second data path using the second APN.
  • the terminal 110 may generate the second data path using the second APN according to the fourth rule of Table 4.
  • the terminal 110 may terminate the first data path (connection using the first APN).
  • the terminal 110 may terminate the first data path because it is connected to the PDN through a second data path.
  • step S830 the terminal 110 may determine whether the terminating nomadic flow is the last nomadic flow among pending nomadic flows. If the terminating nomadic flow is not the last nomadic flow, the terminal 110 may end the operation flow illustrated in FIG. 8. In contrast, when the terminating nomadic flow is the last nomadic flow, the terminal 110 may perform an operation in step S835.
  • step S835 the terminal 110 may determine whether there is a currently pending first data path.
  • the terminal 110 may determine whether the first data path is pending to maintain a connection with the PDN. If the first data path is pending, the terminal 110 may perform an operation of step S840. In contrast, when the first data path is not pending, the terminal 110 may end the operation flow illustrated in FIG. 8 without terminating the second data path in order to maintain a connection state with the PDN. have.
  • step S840 the terminal 110 may terminate the second data path. Since the terminal is connected to the PDN through the first data path, the terminal 110 may terminate the second data path.
  • the terminal 110 may maintain the connection with the network while ensuring mobility of the terminal with respect to nomadic flow using paired APNs.
  • the terminal 110 may adaptively secure communication capability using a data path.
  • the base station when the base station is connected to a base station in a wireless environment, when the base station is not connected to a local gateway (L-GW), an IP (Internet protocol) address using a first access point name (APN) Generating a first data path for a second data flow that can be changed, and when the base station is connected to the L-GW, using a second APN corresponding to the first APN; Generating a second data path for a second data flow, wherein the first data path may be a path for a first data flow in which an IP address cannot be changed, and the second data path is And a path connecting the terminal and a packet data network (PDN) through the L-GW, wherein the L-GW is a GW for communicating with the PDN without using the core network (CN).
  • L-GW local gateway
  • APN access point name
  • the first data path may be a path connected to the base station and connecting the terminal and the PDN through a packet data network gateway (P-GW) included in the CN.
  • the operation method may further include generating the first data path for the first data flow when the first data path is not generated.
  • the operation method may further include terminating the first data path when the first data path is not used.
  • the operation method may further include terminating the second data path when the second data path is not used.
  • the method may further include terminating the first data path when the first data path is not used and the second data path is not used.
  • the method may further include receiving a message for notifying whether the L-GW is connected with the base station from a mobility management entity (MME), and the first data flow for the second data flow.
  • MME mobility management entity
  • the generating of the data path may include generating the first data path for the second data flow when the base station is not connected to the L-GW based on the received message.
  • the generating of the second data path for the second data flow may include generating the second data path for the second data flow when the base station is connected to the L-GW based on the received message. It may include the process of doing.
  • the operation method may further include transmitting or receiving at least one traffic associated with the second data flow through the first data path in response to the generation of the first data path, and the second data.
  • the method may further include transmitting or receiving the at least one traffic through the second data path in response to the generation of the path.
  • the method may further include converting the first data path to the second data path when the terminal using the first data path for the second data flow is connected to another base station connected to the L-GW. And transmitting or receiving at least one traffic related to the second data flow through the switched second data path.
  • the first APN may include information for the first data path
  • the second APN may include information for the second data path
  • FIG. 9 is a diagram illustrating a functional configuration of a terminal.
  • the functional configuration may be included in the terminal 110 shown in FIG. 1.
  • the terminal 110 may include an antenna 910, at least one transceiver 920, a storage unit 930, and a controller 940.
  • the antenna 910 may include one or more antennas.
  • the antenna 910 may be configured to be suitable for a multi input multi output (MIMO) technique.
  • MIMO multi input multi output
  • the at least one transceiver 920 may perform functions for transmitting or receiving a signal through a wireless channel.
  • the at least one transceiver 920 may perform a baseband signal and bit string conversion function according to a physical layer standard of the system. For example, when transmitting data, the at least one transceiver 920 may generate complex symbols by encoding and modulating a transmission bit stream. For another example, when receiving data, the at least one transceiver 920 may demodulate and decode the baseband signal to restore the received bit string.
  • the at least one transceiver 920 may up-convert a baseband signal into an RF band signal and transmit the same through the antenna 910.
  • the at least one transceiver 920 may down-convert an RF band signal received through the antenna 910 to a baseband signal.
  • the at least one transceiver 920 may include a transmission filter, a reception filter, an amplifier, a mixer, an oscillator, a digital analog converter (DAC), an analog digital converter (ADC), and the like. It may include.
  • the at least one transceiver 920 may be operatively coupled with the controller 940.
  • the storage unit 930 may store a control command code, control data, or user data for controlling the terminal 110.
  • the storage unit 930 may include an application, an operating system (OS), middleware, and a device driver.
  • OS operating system
  • middleware middleware
  • device driver a device driver
  • the storage unit 930 may include at least one of a volatile memory or a non-volatile memory.
  • the volatile memory includes a dynamic RAM (DRAM), a static RAM (SRAM), a synchronous DRAM (SDRAM), a phase-change RAM (PRAM), a magnetic RAM (MRAM), a resistive RAM (RRAM), a ferroelectric RAM (FeRAM), and the like. can do.
  • the nonvolatile memory may include a read only memory (ROM), a programmable ROM (PROM), an electrically programmable ROM (EPROM), an electrically erasable ROM (EEPROM), a flash memory, and the like.
  • the storage unit 930 may include nonvolatile media such as a hard disk drive (HDD), a solid state disk (SSD), an embedded multi media card (eMMC), and a universal flash storage (UFS). have.
  • HDD hard disk drive
  • SSD solid state disk
  • eMMC embedded multi media card
  • UFS universal flash storage
  • the storage unit 930 may include information related to the pair APNs and an algorithm for operation related to the pair APNs. For example, the storage unit 930 may include information on whether the L-GW 170 is available. For another example, the storage unit 930 may include information for accessing a base station. As another example, the storage unit 930 may include information for changing a connection with a base station.
  • the storage unit 930 may be operatively coupled with the control unit 940.
  • the controller 940 may control overall operations of the terminal 110.
  • the controller 940 may transmit or receive a signal through the at least one transceiver 920.
  • the controller 940 may record data in the storage 930 and read data recorded in the storage 930.
  • the controller 930 may include at least one processor.
  • the controller 940 may include a communication processor (CP) for performing control for communication and an application processor (AP) for controlling a higher layer such as an application program.
  • CP communication processor
  • AP application processor
  • the controller 940 may manage a connection, manage a data flow, and manage an IP configuration.
  • FIG. 10 is a diagram illustrating a functional configuration of a controller.
  • the functional configuration may be included in the controller 940 shown in FIG. 9.
  • the controller 940 may include a connection manage unit 1010, a flow manage unit 1020, and an IP configuration manage unit 1030.
  • connection manager 1010 may perform an access and release procedure using the paired APNs.
  • the connection manager 1010 may read the pair APNs from the storage unit 930 to generate or terminate the first data path or the second data path.
  • the connection manager 1010 may determine whether the L-GW 170 is available. When the base station to which the terminal 110 accesses is changed, the connection manager 1010 may determine whether the base station is connected to the L-GW 170. For example, the connection manager 1010 may determine whether the L-GW 170 is available through an indication message received from the MME 140.
  • the flow manager 1020 may set a new data flow or terminate the current data flow.
  • the flow manager 1020 may determine whether a data flow (eg, an initiating data flow, a data flow for changing a data path, a terminating data flow, etc.) in which an event occurs is a mobile flow or a nomadic flow.
  • a data flow eg, an initiating data flow, a data flow for changing a data path, a terminating data flow, etc.
  • the IP configuration manager 1030 may perform configuration and release of an IP address.
  • the IP configuration manager 1030 may set properties of the IP address.
  • the IP configuration manager 1030 may delete IP addresses associated with unused data paths or unused data flows.
  • the IP configuration manager 1030 may search for a corresponding APN using the pair APNs.
  • the IP configuration manager may configure or set an IP address associated with the corresponding APN.
  • an apparatus of a terminal connected to a base station in a wireless environment may include a controller and at least one transceiver operatively coupled with the controller.
  • the controller may further include a second data flow capable of changing an internet protocol (IP) address using a first access point name (APN) when the base station is not connected to a local gateway (L-GW).
  • IP internet protocol
  • APN access point name
  • L-GW local gateway
  • the first data path may be a path for the first data flow that can not change the IP address, the second data path, the LDN and the PDN via the L-GW (packet data network) May be gyeolhaneun path
  • the L-GW may be, the core network (CN, core network) and the PDN GW to communicate without the use of.
  • the first data path may be a path connected to the base station and connecting the terminal and the PDN through a packet data network gateway (P-GW) included in the CN.
  • the controller may be further configured to generate the first data path in response to the start of the first data flow when the first data path is not generated.
  • the controller may be further configured to terminate the first data path when the first data path is not used.
  • the controller may be further configured to terminate the second data path when the second data path is not used.
  • the controller may be further configured to terminate the first data path when the first data path is not used and the second data path is not used.
  • the control unit may be further configured to receive a message for notifying whether the L-GW is connected with the base station from a mobility management entity (MME), and the base station is configured to receive the L- based on the received message. May be configured to generate the first data path for the second data flow when not connected to a GW, and when the base station is connected to the L-GW based on the received message.
  • the second data path may be configured to generate the second data path.
  • the controller may be further configured to transmit or receive at least one traffic associated with the second data flow through the first data path in response to the generation of the first data path. And may be configured to transmit or receive the at least one traffic over the second data path in response to the generation of a second data path.
  • the controller may switch the first data path to the second data path when the terminal using the first data path for the second data flow is connected to another base station connected to the L-GW. It may be further configured, and may be further configured to transmit or receive at least one traffic associated with the second data flow over the switched second data path.
  • the first APN may include information for the first data path
  • the second APN may include information for the second data path
  • a computer-readable storage medium for storing one or more programs (software modules) may be provided.
  • One or more programs stored in a computer readable storage medium are configured for execution by one or more processors in an electronic device.
  • One or more programs include instructions that cause an electronic device to execute methods in accordance with embodiments described in the claims or specifications of this disclosure.
  • Such programs may include random access memory, non-volatile memory including flash memory, read only memory (ROM), and electrically erasable programmable ROM.
  • EEPROM Electrically Erasable Programmable Read Only Memory
  • magnetic disc storage device compact disc ROM (CD-ROM), digital versatile discs (DVDs) or other forms
  • CD-ROM compact disc ROM
  • DVDs digital versatile discs
  • It can be stored in an optical storage device, a magnetic cassette. Or, it may be stored in a memory composed of some or all of these combinations.
  • each configuration memory may be included in plural.
  • the program may be configured through a communication network such as the Internet, an intranet, a local area network (LAN), a wide area network (WLAN), or a storage area network (SAN), or a combination thereof. It may be stored in an attachable storage device that is accessible. Such a storage device may be connected to a device that performs an embodiment of the present disclosure through an external port. In addition, a separate storage device on a communication network may be connected to a device that performs an embodiment of the present disclosure.
  • a communication network such as the Internet, an intranet, a local area network (LAN), a wide area network (WLAN), or a storage area network (SAN), or a combination thereof. It may be stored in an attachable storage device that is accessible. Such a storage device may be connected to a device that performs an embodiment of the present disclosure through an external port.
  • a separate storage device on a communication network may be connected to a device that performs an embodiment of the present disclosure.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un système de communication 5G (5ème génération) ou pré-5G, destiné à prendre en charge un débit de données plus élevé, au-delà de celui d'un système de communication 4G (4ème génération) tel que LTE (évolution à long terme). Selon des aspects associés à un environnement sans fil, un procédé de fonctionnement d'un équipement utilisateur connecté à un noeud B évolué (eNB) peut comprendre les étapes consistant à : lorsque l'eNB n'est pas connecté à une passerelle locale (L-GW), générer un premier chemin de données pour un second flux de données, dans lequel un changement dans l'adresse de protocole Internet (IP) est possible, à l'aide d'un premier nom de point d'accès (APN) ; et lorsque l'eNB est connecté à la L-GW, générer un deuxième chemin de données pour le deuxième flux de données à l'aide d'un deuxième APN correspondant au premier APN.
PCT/KR2016/001704 2015-02-23 2016-02-22 Appareil et procédé pour modifier de manière adaptative un chemin de données Ceased WO2016137174A1 (fr)

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KR1020160016520A KR20160102886A (ko) 2015-02-23 2016-02-12 적응적으로 데이터 경로를 변경하기 위한 장치 및 방법

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KR20180084578A (ko) * 2017-01-17 2018-07-25 삼성전자주식회사 무선 통신 시스템에서 네트워크 간 인터워킹 방법 및 장치
WO2018135861A1 (fr) * 2017-01-17 2018-07-26 삼성전자 주식회사 Procédé et appareil d'interfonctionnement entre réseaux dans un système de communication sans fil
US11425778B2 (en) 2017-01-17 2022-08-23 Samsung Electronics Co., Ltd. Method and apparatus for interworking between networks in wireless communication system
KR102865961B1 (ko) 2017-01-17 2025-09-29 삼성전자주식회사 무선 통신 시스템에서 네트워크 간 인터워킹 방법 및 장치

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