WO2018098718A1 - Procédé et appareil d'établissement de trajet - Google Patents

Procédé et appareil d'établissement de trajet Download PDF

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Publication number
WO2018098718A1
WO2018098718A1 PCT/CN2016/108112 CN2016108112W WO2018098718A1 WO 2018098718 A1 WO2018098718 A1 WO 2018098718A1 CN 2016108112 W CN2016108112 W CN 2016108112W WO 2018098718 A1 WO2018098718 A1 WO 2018098718A1
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sgw
enb
pgw
service flow
identifier
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PCT/CN2016/108112
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English (en)
Chinese (zh)
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魏鑫鹏
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华为技术有限公司
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Priority to PCT/CN2016/108112 priority Critical patent/WO2018098718A1/fr
Publication of WO2018098718A1 publication Critical patent/WO2018098718A1/fr

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    • 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

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for establishing a path.
  • the nodes on the preset path of the service flow between the user equipment (UE) and the target UE include: the source UE, the source eNodeB (eNB), and the serving gate way (SGW). , a packet data gate way (PGW), a target PGW, a target SGW, a target eNB, and a target UE.
  • PGW packet data gate way
  • the association relationship between the nodes on the preset path is as shown in FIG. 1 , wherein the network side node of the same layer (for example, the source eNB and the target eNB of the eNB layer, the source SGW and the target SGW of the SGW layer, etc.) may be the same. It can also be different.
  • the traffic between the source UE and the target UE must be as shown in FIG.
  • the preset path is transmitted, which results in a long transmission path of the service flow, which results in a large service flow delay and a high packet loss rate.
  • the source PGW is the same as the target PGW
  • the source SGW is the same as the target SGW
  • the source eNB is the same as the target eNB.
  • the source eNB establishes a new path through the source UE, the source eNB, and the target UE for the traffic flow, that is, establishes a new path at the eNB layer.
  • the source SGW can learn the information of the target eNB connected to the target SGW, and determine whether the source eNB and the target eNB are the same.
  • the source SGW cannot know the information of the target eNB connected to the target SGW, and thus cannot determine whether the source eNB and the target eNB are the same. In this case, a new path cannot be established for the service flow at the eNB layer, thereby preventing the traffic flow from being optimized to the greatest extent. path.
  • Embodiments of the present invention provide a method and apparatus for establishing a path for optimizing a transmission path of a traffic flow.
  • a method for establishing a path may include: the first SGW sends an eNB discovery message to the second SGW, where the eNB discovery message carries an identifier of the service flow, where the service flow is sent by the first UE to the second UE.
  • the first UE is connected to the first SGW
  • the second UE is connected to the second SGW
  • the eNB discovery message is used to indicate that the second SGW acquires the identifier of the eNB to which the second UE is connected
  • the first SGW receives the second SGW.
  • the first eNB And sending, by the first eNB, the eNB that is connected to the second UE, if the eNB that is connected to the first UE is the same as the eNB that is connected to the second UE, and sends the eNB that is connected to the first UE to the eNB that is connected to the first UE.
  • a path setup message where the path setup message carries an identifier of the service flow, and is used to indicate that the eNB connected by the first UE establishes a new path for the service flow by the first UE, the eNB connected by the first UE, and the second UE.
  • the method may further include: the first SGW receiving the path discovery message sent by the first PGW, where the path discovery message carries the service flow And the identifier of the second SGW, the first SGW is connected to the first PGW, and the first SGW sends the base station eNB discovery message to the second SGW, where the first SGW may send the eNB discovery message to the second SGW according to the path discovery message.
  • the second SGW is connected to the first PGW, or the second SGW is connected to the second PGW, the first PGW and the second PGW being different.
  • the second aspect provides a method for establishing a path, where the method may include: the first PGW receives an identifier of the service flow, where the service flow is a service flow sent by the first UE and the second UE is the final receiver, first The UE connects to the first PGW; if the first PGW determines that the SGW connected to the first UE is different from the SGW connected to the second UE, the first path discovery message is sent to the SGW connected to the first UE; the first path discovery message carries the service flow.
  • the identifier of the SGW that is connected to the second UE is used to indicate that the SGW connected by the first UE acquires the identifier of the eNB connected to the second UE to the SGW that is connected by the second UE, so that the eNB connected to the first UE is determined to be the second If the eNBs connected to the UE are the same, the eNB indicating that the first UE is connected establishes a new path for the service flow through the first UE, the eNB connected by the first UE, and the second UE.
  • the SGW connected to the second UE is connected to the first PGW, or the SGW connected to the second UE is connected to the second PGW, and the first PGW and the second PGW are different.
  • the method may further include: The first PGW sends an SGW discovery message to the second PGW, where the SGW discovery message carries an identifier of the service flow, and is used to indicate that the second PGW acquires the identifier of the SGW that the second UE is connected to; the first PGW receives the second UE that is sent by the second PGW. The identity of the connected SGW.
  • the method may further include: if the first PGW determines that the SGW connected by the first UE is the same as the SGW connected to the second UE, sending a second path discovery message to the SGW connected to the first UE, where The second path discovery message carries an identifier of the service flow, and is used to indicate that the SGW connected by the first UE establishes the first UE connection for the service flow, when determining that the eNB connected by the first UE is different from the eNB connected to the second UE.
  • the eNB establishes a new path for the service flow by the first UE, the eNB connected by the first UE, and the second UE.
  • the third aspect provides an SGW, which may include: a sending module, configured to send an eNB discovery message to the second SGW, where the eNB discovery message carries an identifier of the service flow, where the service flow is sent by the first UE by using the second UE
  • the first UE is connected to the SGW
  • the second UE is connected to the second SGW
  • the eNB discovery message is used to indicate that the second SGW acquires the identifier of the eNB connected to the second UE
  • the receiving module is configured to receive the second SGW.
  • the sending module is further configured to: connect to the first UE if the eNB connected to the first UE is the same as the eNB connected to the second UE, according to the identifier of the eNB connected by the second UE.
  • the eNB sends a path setup message, where the path setup message carries an identifier of the service flow, and is used to indicate that the eNB connected by the first UE establishes a new path for the service flow by the first UE, the eNB connected by the first UE, and the second UE.
  • the receiving module is further configured to: receive a path discovery message sent by the first PGW, where the path discovery message carries the identifier of the service flow and the identifier of the second SGW, and the SGW connects to the first PGW; the sending module further And: sending an eNB discovery message to the second SGW according to the path discovery message.
  • the second SGW is connected to the first PGW, or the second SGW is connected to the second PGW, the first PGW and the second PGW being different.
  • a PGW may include: a receiving module, configured to receive an identifier of a service flow, where the service flow is a service flow sent by the first UE, where the second UE is the final receiver, and the first UE is connected to the PGW.
  • a sending module configured to send a first path discovery message to the SGW connected to the first UE, if the SGW that is connected to the first UE is different from the SGW that is connected to the second UE, where the first path discovery message carries the service flow And the identifier of the SGW that is connected to the second UE is used to indicate that the SGW that is connected by the first UE acquires the identifier of the eNB that is connected by the second UE to the SGW that is connected by the second UE, so that the eNB that is connected by the first UE and the second UE are determined.
  • the connected eNBs are the same In case, the eNB indicating that the first UE is connected establishes a new path for the service flow by the first UE, the eNB connected by the first UE, and the second UE.
  • the SGW connected to the second UE is connected to the PGW, or the SGW connected to the second UE is connected to the second PGW, and the PGW and the second PGW are different.
  • the SGW connected to the second UE is connected to the PGW, or the SGW connected to the second UE is connected to the second PGW, and the PGW and the second PGW are different.
  • the sending module is further configured to: send an SGW discovery message to the second PGW, where the SGW discovery message carries an identifier of the service flow, and is used to indicate that the second PGW acquires the identifier of the SGW that is connected by the second UE;
  • the method is further configured to: receive an identifier of the SGW of the second UE connection sent by the second PGW.
  • the sending module is further configured to: if it is determined that the SGW connected to the first UE is the same as the SGW connected to the second UE, send a second path discovery message to the SGW connected to the first UE, where the second The path discovery message carries an identifier of the service flow, and is used to indicate that the SGW connected by the first UE establishes the eNB connected by the first UE for the service flow, when determining that the eNB connected by the first UE is different from the eNB connected to the second UE.
  • the SGW connected by the first UE and the eNB connected to the second UE is the same as the eNB that determines that the eNB connected by the first UE is the same as the eNB connected to the second UE,
  • the eNB connected by the first UE establishes a new path for the service flow by the first UE, the eNB connected by the first UE, and the second UE.
  • a computer readable storage medium where computer execution instructions are stored, and when at least one processor of the SGW executes the computer to execute an instruction, the SGW performs the first aspect or the first aspect.
  • a computer readable storage medium where computer execution instructions are stored, and when at least one processor of the PGW executes the computer to execute an instruction, the PGW performs the second aspect or the second aspect.
  • a computer program product comprising computer executable instructions stored in a computer readable storage medium; at least one processor of the SGW being readable from the computer readable storage medium Executing the instructions, the at least one processor executing the computer to execute the instructions, such that the SGW implements the method of establishing a path provided by the first aspect or any of the possible implementations of the first aspect above.
  • a computer program product comprising computer executable instructions stored in a computer readable storage medium; at least one processor of the PGW being readable from the computer readable storage medium Executing the instructions, the at least one processor executing the computer to execute the instructions, such that the SGW implements the method of establishing a path provided by the second aspect or any of the possible implementations of the second aspect above.
  • any of the SGW, PGW or computer storage media provided above is used to perform the method for establishing a path provided above, and therefore, the beneficial effects that can be achieved can be referred to the corresponding establishment provided above.
  • the beneficial effects of the path method are not described here.
  • FIG. 1 is a network architecture diagram to which an embodiment of the present invention is applied;
  • FIG. 3 is a schematic diagram of a method for marking a tunnel according to an embodiment of the present disclosure
  • FIG. 4 is an interaction diagram of a method for establishing a path according to an embodiment of the present invention.
  • FIG. 5 is another network architecture diagram applicable to an embodiment of the present invention.
  • FIG. 6 is another network architecture diagram applicable to an embodiment of the present invention.
  • FIG. 7 is another network architecture diagram applicable to an embodiment of the present invention.
  • FIG. 8 is another network architecture diagram applicable to an embodiment of the present invention.
  • FIG. 9 is another network architecture diagram applicable to an embodiment of the present invention.
  • FIG. 10 is an interaction diagram of another method for establishing a path according to an embodiment of the present invention.
  • FIG. 11 is another network architecture diagram applicable to an embodiment of the present invention.
  • FIG. 12 is an interaction diagram of another method for establishing a path according to an embodiment of the present invention.
  • FIG. 13 is an interaction diagram of another method for establishing a path according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of an SGW according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of another SGW according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a PGW according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of another PGW according to an embodiment of the present invention.
  • FIG. 1 is different in any layer node (ie, source PGW). It is not described that the target PGW is not shared with the target PGW, and the source SGW and the target SGW are not shared, and the source eNB and the target eNB are not shared.
  • layer node ie, source PGW
  • the two network side nodes can communicate based on a general data transfer platform (GTP) protocol. This. Based on the GTP protocol, the traffic between the two network side nodes is carried by the tunnel.
  • the tunnel between any two network side nodes may have one or more tunnels, and the tunnel between the two network side nodes may use the two.
  • the tunnel endpoint identifier (TEID) of the network side node is determined, as shown in FIG. 3, as a method for marking the tunnel.
  • the tunnel between the source eNB and the source SGW may include GTP tunnel 1 and GTP tunnel 2; TEID1 and TETD3 jointly determine GTP tunnel 1, and TEID1 and TETD3 jointly determine GTP tunnel 2.
  • FIG. 4 it is a flowchart of a method for establishing a path according to an embodiment of the present invention.
  • the method shown in FIG. 4 may include the following steps S101-S111:
  • the first PGW determines whether the first PGW and the second PGW are the same.
  • the first PGW may determine whether the first PGW and the second PGW are the same after receiving the service flow sent by the first SGW.
  • the service flow is a service flow sent by the first UE with the second UE as the final receiver.
  • the service flow may include an identifier of the service flow and a content of the service flow (ie, data sent by the first UE to the second UE).
  • the identifier of the service flow can be understood as: the IP quintuple of the service flow, including: source IP address, source port, destination IP address, target port, and transport layer protocol.
  • the first UE is the source UE and the second UE is the target UE.
  • the source IP address refers to the IP address of the first UE
  • the target IP address refers to the IP address of the second UE.
  • the node on the preset path of the service flow may include a first UE, a first eNB, a first SGW, a first PGW, a second PGW, a second SGW, a second eNB, and a second UE.
  • the first eNB is an eNB connected to the first UE
  • the first SGW is an SGW connected by the first eNB
  • the first PGW is a PGW connected by the first SGW.
  • the second eNB is the eNB to which the second UE is connected
  • the second SGW is the SGW to which the second eNB is connected
  • the second PGW is the PGW to which the second SGW is connected.
  • the first eNB and the second eNB may be the same or different.
  • the first SGW and the second SGW may be the same or different, and the first PGW and the second PGW may be the same or different.
  • the first eNB may be connected to one or more UEs, the first UE may be any one of the UEs connected to the first eNB; the second eNB may be connected to one or more UEs, and the second UE may be any one connected to the second eNB UE.
  • the first PGW determines that the service flow is from the first UE according to the IP address of the first UE included in the service flow, and therefore, can determine that the first UE is connected to the first PGW.
  • the first PGW may determine whether the second UE is connected to the first PGW by determining whether the IP address of the second UE included in the service flow is an IP address allocated by the first PGW, thereby determining the first PGW and the first Whether the two PGWs are the same.
  • the following describes by specific example how the first PGW determines whether the second UE is connected to the first PGW:
  • Manner 1 The correspondence between the first PGW and the IP address of the UE connected to the first PGW (hereinafter referred to as the correspondence 1) may be stored in the first PGW. As shown in Table 1.
  • S101 may specifically include: the first PGW determines the IP address of the second UE carried in the service flow, and if the IP address of the second UE is the IP address of the UE2, the first PGW is the same as the second PGW. If the IP address of the second UE is the IP address of the UE3, the IP address of the UE3 is not queried in Table 1, indicating that the UE3 is not connected to the first PGW, and the first PGW is different from the second PGW.
  • Mode 2 The correspondence between the identifier of the first PGW and the IP address segment to which the IP address of the UE connected to the first PGW belongs may be stored in the first PGW (hereinafter referred to as the correspondence 2). As shown in table 2.
  • IP address segment to which the IP address of the UE belongs PGW logo IP address segment: [x1, x2), where x1 ⁇ x2 Identification of the first PGW
  • S101 may specifically include: determining, by the first PGW, whether an IP address of the second UE carried in the received service flow is included in [x1, x2), and if yes, the first PGW is the same as the second PGW; No, the first PGW is different from the second PGW.
  • Mode 2 can save storage space compared to Mode 1 described above.
  • the correspondence relationship 1 and the correspondence relationship 2 are both stored in the first PGW as an example.
  • the correspondence relationship 1 and the correspondence relationship 2 may also be stored in a database, where The database can be set up in a separate device or integrated on any device in the network.
  • the first PGW sends an SGW discovery message to the second PGW, where the SGW discovery message carries an identifier of the service flow, where the second PGW obtains the identifier of the second SGW, and the second PGW receives the SGW discovery message sent by the first PGW. .
  • the second PGW obtains the identifier of the second SGW by querying the correspondence between the identifier of the service flow and the identifier of the second SGW according to the identifier of the service flow.
  • the second PGW sends the identifier of the second SGW to the first PGW.
  • the first PGW receives the identifier of the second SGW sent by the second PGW.
  • the identifier of the second SGW may be an IP address of the second SGW.
  • the first PGW determines whether the first SGW and the second SGW are the same according to the identifier of the second SGW.
  • the first PGW sends a second path discovery message to the first SGW.
  • the second path discovery message carries the identifier of the service flow.
  • the first PGW sends a first path discovery message to the first SGW, where the first path discovery message carries the identifier of the service flow and the identifier of the second SGW.
  • the first SGW receives the first path discovery sent by the first PGW. Message.
  • the first SGW sends an eNB discovery message to the second SGW, where the eNB discovery message carries an identifier of the service flow, where the second SGW receives the identifier of the second eNB, and the second SGW receives the eNB discovery message sent by the first SGW. .
  • the second SGW sends the identifier of the second eNB to the first SGW.
  • the first SGW receives the identifier of the second eNB sent by the second SGW.
  • the second SGW obtains the identifier of the second eNB by querying the correspondence between the identifier of the service flow and the identifier of the second eNB according to the identifier of the service flow.
  • One SGW can connect to one or more eNBs.
  • the SGW may store a correspondence between an identifier of each eNB connected thereto and an identifier of a service flow flowing through the eNB, where the traffic flowing through one eNB includes: any one connected to the eNB A service flow sent by the UE to the eNB, or a service flow with any UE connected to the eNB.
  • the second SGW is connected to two eNBs, namely, eNB1 and eNB2; the traffic flowing through eNB1 is service flow 1, and the service flow flowing through eNB2 is service flow 2, service flow 3; then, in the second SGW
  • the correspondence between the identifier of the stored eNB and the identifier of the service flow may be as shown in Table 3:
  • eNB identity Business flow identifier eNB1 Identification of service flow 1 eNB2 Identification of service flow 2, identification of service flow 3
  • the identifier of the service flow received by the second SGW is the identifier of the service flow 1
  • the identifier of the acquired second eNB is eNB1
  • the identifier of the service flow received by the second SGW is the service flow
  • the identifier of the second eNB or the identifier of the service flow 3 is obtained by the eNB2.
  • the first SGW determines whether the first eNB and the second eNB are the same.
  • the first SGW determines whether the first eNB and the second eNB are the same by determining whether the identifier of the first eNB and the identifier of the second eNB are the same. If the identifier of the first eNB and the identifier of the second eNB are the same, the first eNB and the second eNB are the same; if the identifier of the first eNB and the identifier of the second eNB are different, the first eNB and the second eNB are different.
  • the network architecture diagram can be as shown in FIG. 2, wherein FIG. 2 is “first”. The case where the UE is the source UE and the second UE is the target UE is taken as an example. If the execution result of S101 is "Yes” and the execution result of S104 is "No”, the network architecture diagram may be as shown in FIG. If the execution result of S101 is "No” and the execution result of S104 is "No”, the network architecture diagram may be as shown in FIG. 6. If the execution result of S101 is "No” and the execution result of S104 is "Yes”, the network architecture diagram can be as shown in FIG. Shown.
  • the first SGW sends a path setup message to the first eNB, where the path setup message carries the identifier of the service flow, and the first eNB receives the path setup message sent by the first SGW.
  • the identifier of the first eNB may include an IP address of the first eNB.
  • the method may further include: the first SGW, by querying the identifier of the service flow, querying the identifier of the service flow with the first eNB. The correspondence between the identifiers is obtained, and the identifier of the first eNB is obtained.
  • the first eNB establishes a new path of the first UE, the first eNB, and the second UE for the service flow according to the identifier of the service flow. After executing S110, it ends.
  • Establishing a new path for a service flow can be understood as: establishing a forwarding rule for a service flow.
  • the first eNB establishes a new path for the service flow by using the first UE, the first eNB, and the second UE according to the identifier of the service flow. It can be understood that the first eNB modifies the service flow to the first SGW. "Forward the traffic to the second UE.”
  • the method may further include: after receiving the service flow sent by the first UE, the first eNB forwards the service flow to the second UE.
  • S111 The first SGW establishes a new path of the first eNB, the first SGW, and the second eNB for the service flow according to the identifier of the service flow. After executing S111, it ends.
  • the first SGW establishes a new path for the first eNB, the first SGW, and the second eNB for the service flow, which can be understood as: the first SGW modifies the "for forwarding the service flow to the first PGW" to "put the The traffic is forwarded to the second eNB.”
  • the first SGW sends an eNB discovery message carrying the identifier of the service flow to the second SGW, so as to acquire the identifier of the second eNB that is connected to the second UE and corresponds to the identifier of the service flow, and is determined.
  • the first eNB and the second eNB are the same, the first eNB is instructed to establish a new path for the service flow to flow through the first UE, the first eNB, and the second UE.
  • the transmission path of the service flow can be optimized to the greatest extent.
  • the network architecture shown in FIG. 1 may further include a policy and charging rules function (PCRF), where the PCRF is configured to provide differentiated services for the UE, and provide flow charging.
  • PCRF policy and charging rules function
  • the method may further include: the first PGW acquiring the policy information from the PCRF, where the policy information may include any one of the following: allowing the new path to be established for the service flow at the eNB layer, and allowing the service flow to be established at the SGW layer.
  • New path allows a new path to be established for the service flow at the eNB layer, and does not allow a new path to be established for the service flow at the SGW layer; allows a new path to be established for the service flow at the SGW layer, and does not allow a new path for the service flow at the eNB layer .
  • the method for establishing a path provided by the optional implementation manner is described below by using the first embodiment, the second embodiment, and the third embodiment. It should be noted that the present embodiment is applied to a scenario in which the service flow includes the first UE, the first eNB, the first SGW, the first PGW, the second PGW, the second SGW, the second eNB, and the second UE, as shown in the figure. 1 is shown.
  • FIG. 10 is a flowchart of a method for establishing a path according to an embodiment of the present invention.
  • the judgment result obtained by the first PGW according to the policy information is: allowing a new path to be established for the service flow at the eNB layer and a new path for the service flow at the SGW layer.
  • the method may include the following steps S201 to S212:
  • the first PGW determines whether the first PGW and the second PGW are the same.
  • the first PGW sends an SGW discovery message to the second PGW, where the SGW discovery message is used to obtain the identifier of the second SGW, and the second PGW receives the first PGW.
  • the SGW sent the message.
  • the second PGW sends the identifier of the second SGW to the first PGW.
  • the first PGW receives the identifier of the second SGW sent by the second PGW.
  • the first PGW obtains policy information from the PCRF, where the policy information is: allowing a new path to be established for the service flow at the eNB layer and a new path for the service flow at the SGW layer.
  • S204 may be performed in any step before S205.
  • the first PGW determines whether the first SGW and the second SGW are the same.
  • the first PGW sends a second path discovery message to the first SGW, where the second path discovery message carries an identifier of the service flow.
  • the first PGW sends a first path discovery message to the first SGW, where the first path discovery message carries the identifier of the service flow and the identifier of the second SGW.
  • the first SGW receives the first path discovery message sent by the first PGW.
  • the first SGW sends an eNB discovery message to the second SGW, where the eNB discovery message carries the identifier of the service flow, and is used to obtain the identifier of the second eNB.
  • the second SGW receives the eNB discovery message sent by the first SGW.
  • the second SGW sends a second eNB identifier to the first SGW, where the first SGW receives the second eNB identifier sent by the second SGW.
  • the first SGW determines whether the first eNB and the second eNB are the same.
  • the first SGW sends a path setup message to the first eNB, where the path setup message carries an identifier of the service flow, and is used to indicate that the first eNB establishes a new path by using the first UE, the first eNB, and the second UE.
  • the eNB receives the path setup message sent by the first SGW.
  • the first eNB establishes a new path for the service flow by the first UE, the first eNB, and the second UE.
  • the new path established in S211 is as shown in FIGS. 2, 5, 6, and 7.
  • the first SGW establishes a new path of the eNB, the first SGW, and the second eNB connected by the first UE according to the identifier of the service flow.
  • the new path established in S212 is as shown in FIGS. 8, 9, and 11.
  • the policy information obtained by the first PGW is: allowing a new path to be established for the service flow at the eNB layer, and not allowing a new path to be established for the service flow at the SGW layer.
  • the method may include the following steps S301 to S311:
  • S301-S303 The same as steps S201-S203 in the first embodiment.
  • the first PGW obtains policy information from the PCRF, where the policy information is: A new path is allowed to be established for the service flow at the eNB layer, and a new path is not allowed to be established for the service flow at the SGW layer.
  • the policy information obtained by the first PGW is: allowing a new path to be established for the service flow at the SGW layer, and not allowing a new path to be established for the service flow at the eNB layer.
  • the method may include the following steps S401 to S407:
  • the first PGW obtains policy information from the PCRF, where the policy information is: allowing a new path to be established for the service flow at the SGW layer, and not allowing a new path to be established for the service flow at the eNB layer.
  • step S405 Same as step S205 in the first embodiment.
  • S406 is executed. If the execution result of S405 is "No", the path optimization is not performed, and the process ends. In this case, the first SGW still forwards the received service flow forwarded by the first eNB to the first PGW.
  • the first PGW sends a path discovery message to the first SGW, where the second path discovery message carries an identifier of the service flow.
  • step S407 Same as step S212 in the first embodiment.
  • FIG. 14 shows a schematic structural diagram of an SGW 14.
  • SGW 14 may be the first SGW provided above.
  • the SGW 14 may include a transmitting module 1401 and a receiving module 1402.
  • the sending module 1401 may be configured to send a base station eNB discovery message to the second SGW, where
  • the eNB discovery message carries an identifier of the service flow, where the service flow is a service flow sent by the first user equipment UE with the second UE as the final receiver, the first UE is connected to the SGW, the second UE is connected to the second SGW, and the eNB discovers the message.
  • An identifier of an eNB used to instruct the second SGW to acquire a second UE connection.
  • the receiving module 1402 is configured to receive an identifier of an eNB that is connected by the second UE sent by the second SGW.
  • the sending module 1401 is further configured to: send, according to the identifier of the eNB that is connected by the second UE, a path establishment message to the eNB that is connected to the first UE, if the eNB that is connected to the first UE is the same as the eNB that is connected to the second UE, where
  • the path setup message carries an identifier of the service flow, and is used to indicate that the eNB connected by the first UE establishes a new path for the service flow by the first UE, the eNB connected by the first UE, and the second UE.
  • the receiving module 1402 is further configured to: receive the path discovery message sent by the first packet data network gateway PGW, where the path discovery message carries the identifier of the service flow and the identifier of the second SGW, and the SGW connects to the first PGW.
  • the sending module 1401 may be further configured to: send an eNB discovery message to the second SGW according to the path discovery message.
  • the second SGW is connected to the first PGW, or the second SGW is connected to the second PGW, and the first PGW and the second PGW are different.
  • the SGW 14 may also include a determination module 1403 and an establishment module 1404.
  • the decision module 1403 can perform S108 in FIG. 4, S209 in FIG. 10, S309 in FIG. 12, and the like, and/or other processes for the techniques described herein.
  • the setup module 1404 can perform S111 in FIG. 4, S212 in FIG. 10, and S407 in FIG. 13, etc., and/or other processes for the techniques described herein.
  • the function of each of the functional modules may be inferred according to the steps in the method embodiments provided above, or may refer to the content provided in the above content of the invention, and details are not described herein again. .
  • FIG. 15 is a schematic structural diagram of an SGW 15 according to an embodiment of the present invention.
  • SGW 15 may be the first SGW provided above.
  • the SGW 15 may include a processor 1501, a transceiver 1502, a memory 1503, and a bus 1504.
  • the processor 1501, the transceiver 1502, and the memory 1503 are connected to each other through a bus 1504.
  • Memory The program 1501 is used to store the computer execution instructions.
  • the processor 1501 executes the computer execution instructions stored in the memory 1503, so that the SGW 15 performs the actions performed by the first SGW in any method for establishing a path provided by the embodiment of the present invention. .
  • For a specific method for establishing a path refer to the related descriptions in the above and the drawings, and details are not described herein again.
  • FIG. 16 shows a schematic structural view of a PGW 16.
  • PGW 16 may be the first PGW provided above.
  • the PGW 16 may include a transmitting module 1601 and a receiving module 1602.
  • the sending module 1601 may be configured to: if it is determined that the SGW that is connected by the first UE is different from the SGW that is connected to the second UE, send a first path discovery message to the SGW that is connected to the first UE, where the first path discovery message carries the service flow.
  • the identifier of the SGW that is connected to the second UE is used to indicate that the SGW that is connected by the first UE acquires the identifier of the eNB that is connected by the second UE to the SGW that is connected by the second UE, so that the eNB that is connected by the first UE and the second UE are determined. If the connected eNBs are the same, the eNB indicating that the first UE is connected establishes a new path for the service flow through the first UE, the eNB connected by the first UE, and the second UE.
  • the receiving module 1602 may be configured to receive an identifier of the service flow, where the service flow is a service flow sent by the first UE, where the second UE is the final receiver, and the first UE is connected to the PGW.
  • the SGW connected to the second UE is connected to the PGW, or the SGW connected to the second UE is connected to the second PGW, and the PGW and the second PGW are different.
  • the sending module 1601 is further configured to: send an SGW discovery message to the second PGW, where the SGW discovery message carries an identifier of the service flow, and is used to indicate that the second PGW acquires the identifier of the SGW that is connected by the second UE.
  • the receiving module 1602 may be further configured to: receive an identifier of the SGW of the second UE connection sent by the second PGW.
  • the sending module 1601 is further configured to: if it is determined that the SGW connected to the first UE is the same as the SGW connected to the second UE, send a second path discovery message to the SGW connected to the first UE, where the second path is found.
  • the message carries an identifier of the service flow, where the SGW that is connected to the first UE is configured to establish, by the first UE, the eNB connected to the first UE, if the eNB that is connected to the first UE is different from the eNB that is connected to the second UE, A new path of the SGW connected by the first UE and the eNB connected to the second UE.
  • the SGW that is used to indicate that the first UE is connected to the eNB that is connected to the first UE is the same as the eNB that is connected to the second UE, and indicates that the eNB that is connected by the first UE establishes the first UE and the first UE for the service flow.
  • the PGW 16 may also include an acquisition module 1603 and a determination module 1604.
  • the acquisition module 1603 can perform S204 in FIG. 10, S304 in FIG. 12, and S404 in FIG. 13, etc., and/or other processes for the techniques described herein.
  • the determination module 1604 can perform S101 and S104 in FIG. 4, S201 and S205 in FIG. 10, S301 and S305 in FIG. 12, S401 and S405 in FIG. 13, etc., and/or other techniques for the techniques described herein. process.
  • the function of each of the functional modules may be inferred according to the steps in the method embodiments provided above, or may refer to the content provided in the above content of the invention, and details are not described herein again. .
  • FIG. 17 is a schematic structural diagram of a PGW 17 according to an embodiment of the present invention.
  • the PGW 17 may be the first PGW provided above.
  • the PGW 17 may include a processor 1701, a transceiver 1702, a memory 1703, and a bus 1704; wherein the processor 1701, the transceiver 1702, and the memory 1703 are connected to each other through a bus 1704.
  • the memory 1703 is configured to store a computer execution instruction.
  • the processor 1701 executes the computer execution instruction stored in the memory 1703, so that the PGW 17 executes any one of the methods for establishing a path provided by the embodiment of the present invention. action.
  • For a specific method for establishing a path refer to the related descriptions in the above and the drawings, and details are not described herein again.
  • the processor 1501 and the processor 1701 may be a CPU, a general purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and a field programmable gate array. , FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, such as one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the memory 1503 and the memory 1703 may include a volatile memory such as a random access memory (RAM), and the memory 1503 and the memory 1703 may also include a nonvolatile memory such as a read only memory (ROM).
  • RAM random access memory
  • ROM read only memory
  • the bus 1504 and the bus 1704 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus or the like.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figures 15 and 17, but it does not mean that there is only one bus or one type of bus.
  • the steps of the method or algorithm described in connection with the disclosure of the present application may be implemented in a hardware manner, or may be implemented by a processing module executing software instructions.
  • the software instructions may be composed of corresponding software modules, which may be stored in RAM, flash memory, ROM, erasable programmable read only memory (EPROM), electrically erasable programmable read only memory (electrically EPROM, EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the functions described herein can be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

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

Abstract

La présente invention se rapporte au domaine technique des communications. L'invention concerne un procédé et un appareil d'établissement de trajet, destinés à être utilisés dans l'optimisation d'un trajet de transmission d'un flux de service. Le procédé comprend les étapes suivantes : une première SGW envoie, à une seconde SGW, un message de découverte d'eNB qui transporte un identifiant d'un flux de service et qui est utilisé pour ordonner à la seconde SGW d'obtenir un eNB connecté par un second UE, le flux de service étant un flux de service qui est envoyé par le premier UE et dont le récepteur final est le second UE ; et la première SGW reçoit l'identifiant qui est envoyé par la seconde SGW et qui indique un eNB connecté par le second UE, et s'il est déterminé, en fonction de l'identifiant de l'eNB connecté par le second UE, que l'eNB connecté par le premier UE est le même que l'eNB connecté par le second UE, la première SGW envoie, à l'eNB connecté par le premier UE, un message d'établissement de chemin qui transporte un identifiant d'un flux de service et qui est utilisé pour ordonner à l'eNB connecté par le premier UE d'établir, pour le flux de service, un nouveau trajet qui passe par le premier UE, l'eNB connecté par le premier UE et le second UE.
PCT/CN2016/108112 2016-11-30 2016-11-30 Procédé et appareil d'établissement de trajet WO2018098718A1 (fr)

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Citations (4)

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CN103200638A (zh) * 2012-01-05 2013-07-10 中兴通讯股份有限公司 一种用户面数据的本地转出方法、系统及本地网关
CN103731513A (zh) * 2012-10-15 2014-04-16 中国联合网络通信集团有限公司 基站转发方法、基站和基站转发系统
CN103974429A (zh) * 2013-02-05 2014-08-06 电信科学技术研究院 一种终端间的邻近通信的路径建立方法及设备
US20160037463A1 (en) * 2014-07-31 2016-02-04 Telefonaktiebolaget L M Ericsson (Publ) Power Headroom Reporting Accounting

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103200638A (zh) * 2012-01-05 2013-07-10 中兴通讯股份有限公司 一种用户面数据的本地转出方法、系统及本地网关
CN103731513A (zh) * 2012-10-15 2014-04-16 中国联合网络通信集团有限公司 基站转发方法、基站和基站转发系统
CN103974429A (zh) * 2013-02-05 2014-08-06 电信科学技术研究院 一种终端间的邻近通信的路径建立方法及设备
US20160037463A1 (en) * 2014-07-31 2016-02-04 Telefonaktiebolaget L M Ericsson (Publ) Power Headroom Reporting Accounting

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