CN106792933B - Link establishment method, base station, gateway and system - Google Patents
Link establishment method, base station, gateway and system Download PDFInfo
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- CN106792933B CN106792933B CN201510828409.7A CN201510828409A CN106792933B CN 106792933 B CN106792933 B CN 106792933B CN 201510828409 A CN201510828409 A CN 201510828409A CN 106792933 B CN106792933 B CN 106792933B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
Abstract
The invention discloses a link establishing method, a base station, a gateway and a system, wherein the method comprises the following steps: after establishing connection with user equipment, acquiring source link information of a source base station corresponding to the user equipment; sending the source link information of the source base station to a core network through the uplink, and establishing the uplink with the core network, so that the core network establishes a downlink with the target base station based on the source link information of the source base station; and performing data interaction with a core network through the uplink and the downlink.
Description
Technical Field
The present invention relates to communication control technologies in the field of network management, and in particular, to a link establishment method, a base station, a gateway, and a system.
Background
With the development of mobile communication technology, more and more User Equipments (UEs) are accessed into a mobile communication network and establish a connection with a core network through a base station. However, in the current mobile communication technology, after the ue accesses the new base station, at least a plurality of signaling is required in the process of establishing the connection between the new base station and the core network side, so that the operation of establishing the communication link between the base station and the core network can be completed. It can be seen that, in the above-mentioned technology, since the operation signaling overhead for establishing the link between the base station and the core network is large, the user experience cannot be improved.
Disclosure of Invention
In view of the above, the present invention provides a link establishing method, a base station, a gateway and a system, which can at least solve the above problems in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides a link establishment method, which is applied to a target base station and comprises the following steps:
after establishing connection with user equipment, acquiring source link information of a source base station corresponding to the user equipment;
sending the source link information of the source base station to a core network through the uplink, and establishing the uplink with the core network, so that the core network establishes a downlink with the target base station based on the source link information of the source base station;
and performing data interaction with a core network through the uplink and the downlink.
The embodiment of the invention provides a link establishment method, which is applied to a source base station and comprises the following steps:
switching user equipment establishing RRC connection with the user equipment to a target base station, or establishing connection between the user equipment and the target base station;
and sending source link information aiming at the source link established between the user equipment and the core network side to a target base station.
The embodiment of the invention provides a link establishment method, which is applied to a gateway and comprises the following steps:
receiving source link information of a source base station sent by a target base station, and establishing an uplink with the target base station connected with user equipment; establishing a downlink with the target base station based on source link information of the source base station;
receiving source link information of a source base station sent by a target base station through the uplink;
establishing a downlink with the target base station based on source link information of the source base station;
and performing data interaction with the target base station through the uplink and the downlink.
An embodiment of the present invention provides a base station, including:
the information processing unit is used for acquiring source link information of a source base station corresponding to the user equipment;
a link management unit, configured to send source link information of the source base station to a core network through the uplink, and establish an uplink with the core network; and performing data interaction with a core network through the uplink and the downlink.
An embodiment of the present invention provides a base station, including:
the management unit is used for switching user equipment establishing RRC connection with the management unit to a target base station, or establishing connection between the user equipment and the target base station;
and the information sending unit is used for sending the source link information aiming at the source link established between the user equipment and the core network side to the target base station.
An embodiment of the present invention provides a gateway, including:
a first link management unit, configured to receive source link information of a source base station sent by a target base station, and establish an uplink with the target base station connected to a user equipment;
a second link management unit, configured to establish a downlink with the target base station based on source link information of the source base station; and performing data interaction with the target base station through the uplink and the downlink.
An embodiment of the present invention provides a link establishment system, including:
the target base station is used for acquiring source link information of a source base station corresponding to the user equipment after establishing connection with the user equipment; sending the source link information of the source base station to a gateway through the uplink, and establishing the uplink with a core network;
a gateway for establishing a downlink with the target base station based on source link information of the source base station; and performing data interaction with the target base station through the uplink and the downlink.
The embodiment of the invention provides a link establishment method, a base station, a gateway and a system, which can be used for acquiring source link information between a source base station and a core network when user equipment is accessed to a target base station, and then sending the source link information to the core network, so that the core network establishes a downlink with the target base station based on the source link information. Therefore, signaling to be interacted between the target base station and the core network in the process of establishing the link is reduced, so that the delay of establishing the link between the target base station and the core network is reduced, the requirement of low service delay is met, and the use experience of a user is improved.
Drawings
Fig. 1 is a first flowchart illustrating a link establishment method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a link establishment method according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a packet structure according to an embodiment of the present invention;
fig. 4 is a third schematic flow chart of a link establishment method according to an embodiment of the present invention;
fig. 5 is a fourth schematic flowchart of a link establishment method according to an embodiment of the present invention;
fig. 6 is a fifth flowchart illustrating a link establishment method according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating a sixth method for establishing a link according to an embodiment of the present invention;
fig. 8 is a seventh flowchart illustrating a link establishment method according to an embodiment of the present invention;
FIG. 9 is a first exemplary diagram of a base station according to the present invention;
FIG. 10 is a second exemplary diagram of a base station according to the present invention;
FIG. 11 is a diagram illustrating a gateway configuration according to an embodiment of the present invention;
fig. 12 is a schematic diagram of a system configuration according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The first embodiment,
An embodiment of the present invention provides a link establishment method, applied to a target base station, as shown in fig. 1, including:
step 101: after establishing connection with user equipment, acquiring source link information of a source base station corresponding to the user equipment;
step 102: sending the source link information of the source base station to a core network through the uplink, and establishing the uplink with the core network, so that the core network establishes a downlink with the target base station based on the source link information of the source base station;
step 103: and performing data interaction with a core network through the uplink and the downlink.
Here, in this embodiment, the acquiring source link information of the source base station corresponding to the user equipment includes: acquiring source link information of the source base station from a user equipment side; or obtaining source link information of the source base station from the source base station.
The determination method for establishing connection with the ue may be, by determining whether an RRC connection setup/reconfiguration complete message sent by the ue is received; alternatively, it may be determined to establish a connection with the user equipment for receiving a data message sent by the user equipment.
The scheme provided by the embodiment can be applied to at least two scenes:
and in the first scenario, the UE does not change the gateway.
In this scenario, there may be the following two operation flows:
in a first operation procedure, source link information of the source base station at least includes: internet Protocol (IP) address information, port number of the source base station.
Referring to fig. 2, the first operation flow specifically includes: after the target base station establishes connection with User Equipment (UE), an uplink of the target base station and a core network side is established, and an IP address of a source base station and a port number distributed to the source base station by a gateway are sent to the gateway; the IP address and port number of the source base station may be saved by the UE or the source eNB and then sent to the new eNB. After receiving the data, the gateway automatically establishes or activates a link between the gateway and the source eNB and the new eNB, establishes a downlink on a CN side, and carries out data transmission.
In the second operation procedure, when the target base station directly forwards the data sent by the UE, the source link information is added in the data and sent to the gateway, that is: receiving a first uplink data packet sent by user equipment; adding source link information of the source base station in a preset data bit of the first uplink data packet; and sending the first uplink data packet added with the source link information of the source base station to a core network through the uplink. The preset data bits of the first uplink data packet may be: as shown in fig. 3, in the GTP header of the first uplink data packet or in the data clear core, the GTP data packet header may be 8 bits of data in the first row, where the GTP data packet header may include a version number, a protocol type, an extension header flag, a sequence number flag, and an N-PDU number flag.
The second operation flow can be seen in fig. 4, which specifically includes: after a User Equipment (UE) establishes a connection with a target base station, wherein the target base station can be a new evolved node B (eNB); when transmitting data, the new eNB carries the IP address of the source eNB and the port number of the source eNB to the gateway (SGW) in the GTP Header of the first uplink packet (e.g., Extension Header) of the UE or in the GTP packet, and establishes the CN side uplink. The source eNB IP address and port number may be saved by the UE or the source eNB and sent to the new eNB. After the SGW receives the uplink data, the SGW reads the GTP header or the GTP packet to obtain the IP address of the source eNB and the port number allocated to the source eNB by the SGW, and automatically establishes or activates its link with the source eNB between it and the new eNB. And carrying out data transmission.
And a second scenario is that the UE changes the gateway.
The source link information of the source base station at least comprises: the IP address of the source base station, the Tunnel Endpoint Identifier (TEID) assigned to the source base station by the source gateway GW, and the source GW IP address.
The sending the source link information of the source base station to the core network through the uplink includes: receiving a first uplink data packet sent by user equipment; adding source link information of the source base station in a preset data bit of the first uplink data packet; and sending the first uplink data packet added with the source link information of the source base station to a core network through the uplink.
In this scenario, there are also two operation flows, as shown in fig. 5, the first operation flow includes: after receiving the RRC connection setup/reconfiguration complete message of the UE, the new eNB sends the source eNB IP address and the TEID distributed to the source eNB by the source GW and the source GW IP address to the new SGW, wherein the source eNB and the GW IP address and the source SGW TEID can be sent to the new eNB after the UE or the source eNB is saved; after receiving the source eNB IP address and the source GW TEID message, the new GW sends the CN load configuration information to the source GW, and the source GW replies the CN load configuration information to the new GW; the new GW updates or activates the downlink according to the CN bearing configuration information; and carrying out data transmission.
The second operation flow, as shown in fig. 6, includes: after receiving the uplink data, the new SGW reads a GTP head or a GTP data packet to obtain a source eNB IP address, a source SGW TEID and a source SGW IP address, sends source eNB IP address and source GW TEID information to the source GW to obtain the CN load configuration information, and the source GW replies the CN load configuration information to the new GW; the new SGW updates or activates a downlink according to the CN bearing configuration information; and carrying out downlink data transmission.
Therefore, by adopting the scheme, when the user equipment is accessed to the target base station, the target base station can acquire the source link information between the source base station and the core network, and then the source link information is sent to the core network, so that the core network establishes a downlink with the target base station based on the source link information. Therefore, signaling to be interacted between the target base station and the core network in the process of establishing the link is reduced, so that the delay of establishing the link between the target base station and the core network is reduced, the requirement of low service delay is met, and the use experience of a user is improved.
Example II,
An embodiment of the present invention provides a link establishment method, which is applied to a source base station, and as shown in fig. 7, the method includes:
step 701: switching user equipment establishing RRC connection with the user equipment to a target base station, or establishing connection between the user equipment and the target base station;
step 702: and sending source link information aiming at the source link established between the user equipment and the core network side to a target base station.
The embodiment includes two scenarios, one scenario is that the user equipment has been accessed into the source base station, and then is switched to the target base station along with the movement of the user equipment; the other scenario is that the target base station to be accessed after the user equipment is powered on is different from the original base station accessed when the user equipment is powered off.
The source link information of the source base station at least comprises: the IP address information of the source base station and the port number allocated to the source base station by the source gateway. Alternatively, there may be included: the IP address of the source base station, the TEID allocated to the source base station by the source gateway GW, and the IP address of the source GW.
By adopting the scheme, when the user equipment is accessed to the target base station, the target base station can acquire the source link information between the source base station and the core network, and then the source link information is sent to the core network, so that the core network establishes a downlink with the target base station based on the source link information. Therefore, signaling to be interacted between the target base station and the core network in the process of establishing the link is reduced, so that the delay of establishing the link between the target base station and the core network is reduced, the requirement of low service delay is met, and the use experience of a user is improved.
Example III,
An embodiment of the present invention provides a link establishment method, which is applied to a gateway, and as shown in fig. 8, the method includes:
step 801: receiving source link information of a source base station sent by a target base station, and establishing an uplink with the target base station connected with user equipment; establishing a downlink with the target base station based on source link information of the source base station;
step 802: and performing data interaction with the target base station through the uplink and the downlink.
Here, in this embodiment, the acquiring source link information of the source base station includes: acquiring source link information of the source base station from a user equipment side; or receiving source link information of the source base station sent by the source base station.
The determination method for establishing connection with the ue may be, by determining whether an RRC connection setup/reconfiguration complete message sent by the ue is received; alternatively, it may be determined to establish a connection with the user equipment for receiving a data message sent by the user equipment.
The scheme provided by the embodiment can be applied to at least two scenes:
and in the first scenario, the UE does not change the gateway.
In this scenario, there may be the following two operation flows:
in a first operation procedure, source link information of the source base station at least includes: internet Protocol (IP) address information, port number of the source base station.
Referring to fig. 2, the first operation flow specifically includes: after the target base station establishes connection with User Equipment (UE), sending an IP address of the source base station and a port number allocated to the source base station by the gateway to the gateway, and establishing an uplink between the target base station and a core network side; the IP address and port number of the source base station may be saved by the UE or the source eNB and then sent to the new eNB. After receiving the data, the gateway automatically establishes or activates a link between the gateway and the source eNB and the new eNB, establishes a downlink on a CN side, and carries out data transmission.
In the second operation procedure, when the target base station directly forwards the data sent by the UE, the source link information is added in the data and sent to the gateway, that is: receiving a first uplink data packet sent by user equipment; adding source link information of the source base station in a preset data bit of the first uplink data packet; and sending the first uplink data packet added with the source link information of the source base station to a core network through the uplink. The preset data bits of the first uplink data packet may be: as shown in fig. 3, the GTP header of the first uplink packet or the GTP packet.
The second operation flow can be seen in fig. 4, which specifically includes: after a User Equipment (UE) establishes a connection with a target base station, wherein the target base station can be a new evolved node B (eNB); when transmitting data, the new eNB carries the IP address of the source eNB and the port number of the source eNB to the gateway (SGW) in the GTP Header of the first uplink packet (e.g., Extension Header) of the UE or in the GTP packet, and establishes the CN side uplink. The source eNB IP address and port number may be saved by the UE or the source eNB and sent to the new eNB. After the SGW receives the uplink data, the SGW reads the GTP header or the GTP packet to obtain the IP address of the source eNB and the port number allocated to the source eNB by the SGW, and automatically establishes or activates its link with the source eNB between it and the new eNB. And carrying out data transmission.
And a second scenario is that the UE changes the gateway.
The source link information of the source base station at least comprises: the IP address of the source base station, the TEID allocated to the source base station by the source gateway GW, and the IP address of the source GW.
The sending the source link information of the source base station to the core network through the uplink includes: receiving a first uplink data packet sent by user equipment; adding source link information of the source base station in a preset data bit of the first uplink data packet; and sending the first uplink data packet added with the source link information of the source base station to a core network through the uplink.
The establishing a downlink with the target base station based on the source link information of the source base station includes:
acquiring configuration information carried by a source gateway from a source base station based on an IP address of the source base station and a TEID message of the source base station;
establishing a downlink with the target base station based on the configuration information carried by the source gateway;
in this scenario, there are also two operation flows, as shown in fig. 5, the first operation flow includes: after receiving the RRC connection setup/reconfiguration complete message of the UE, the new eNB sends the source eNB IP address and the TEID distributed to the source eNB by the source GW and the source GW IP address to the new SGW, wherein the source eNB and the GW IP address and the source SGW TEID can be sent to the new eNB after the UE or the source eNB is saved; after receiving the source eNB IP address and the source GW TEID message, the new GW sends the CN load configuration information to the source GW, and the source GW replies the CN load configuration information to the new GW; the new GW updates or activates the downlink according to the CN bearing configuration information; and carrying out data transmission.
The second operation flow, as shown in fig. 6, includes: after receiving the uplink data, the new SGW reads a GTP head or a GTP data packet to obtain a source eNB IP address, a source SGW TEID and a source SGW IP address, sends source eNB IP address and source GW TEID information to the source GW to obtain the CN load configuration information, and the source GW replies the CN load configuration information to the new GW; the new SGW updates or activates a downlink according to the CN bearing configuration information; and carrying out downlink data transmission.
Therefore, by adopting the scheme, when the user equipment is accessed to the target base station, the target base station can acquire the source link information between the source base station and the core network, and then the source link information is sent to the core network, so that the core network establishes a downlink with the target base station based on the source link information. Therefore, signaling to be interacted between the target base station and the core network in the process of establishing the link is reduced, so that the delay of establishing the link between the target base station and the core network is reduced, the requirement of low service delay is met, and the use experience of a user is improved.
Example four,
An embodiment of the present invention provides a base station, as shown in fig. 9, including:
an information processing unit 91, configured to obtain source link information of a source base station corresponding to the user equipment;
a link management unit 92, configured to send source link information of the source base station to a core network, and establish an uplink with the core network; and performing data interaction with a core network through the uplink and the downlink.
Here, in this embodiment, the acquiring source link information of the source base station corresponding to the user equipment includes: acquiring source link information of the source base station from a user equipment side; or receiving source link information of the source base station sent by the source base station.
The determination method for establishing connection with the ue may be, by determining whether an RRC connection setup/reconfiguration complete message sent by the ue is received; alternatively, it may be determined to establish a connection with the user equipment for receiving a data message sent by the user equipment.
The scheme provided by the embodiment can be applied to at least two scenes:
and in the first scenario, the UE does not change the gateway.
In this scenario, there may be the following two operation flows:
in a first operation procedure, source link information of the source base station at least includes: internet Protocol (IP) address information of the source base station, port number assigned to the source base station by the source gateway.
The first operation flow specifically comprises the following steps: after the target base station establishes connection with User Equipment (UE), an uplink of the target base station and a core network side is established, and an IP address of a source base station and a port number distributed to the source base station by a gateway are sent to the gateway; the IP address and port number of the source base station may be saved by the UE or the source eNB and then sent to the new eNB. After receiving the data, the gateway automatically establishes or activates a link between the gateway and the source eNB and the new eNB, establishes a downlink on a CN side, and carries out data transmission.
The second operation process specifically comprises the following steps: after a User Equipment (UE) establishes a connection with a target base station, wherein the target base station can be a new evolved node B (eNB); when transmitting data, the new eNB carries the IP address of the source eNB and the port number of the source eNB to the gateway (SGW) in the GTP Header of the first uplink packet (e.g., Extension Header) of the UE or in the GTP packet, and establishes the CN side uplink. The source eNB IP address and port number may be saved by the UE or the source eNB and sent to the new eNB. After the SGW receives the uplink data, the SGW reads the GTP header or the GTP packet to obtain the IP address of the source eNB and the port number allocated to the source eNB by the SGW, and automatically establishes or activates its link with the source eNB between it and the new eNB. And carrying out data transmission.
And a second scenario is that the UE changes the gateway.
The source link information of the source base station at least comprises: the IP address of the source base station, the TEID allocated to the source base station by the source gateway GW, and the IP address of the source GW.
The link management unit is used for receiving a first uplink data packet sent by user equipment; adding source link information of the source base station in a preset data bit of the first uplink data packet; and sending the first uplink data packet added with the source link information of the source base station to a core network through the uplink.
In this scenario, there are also two operation flows, the first operation flow includes: after receiving the RRC connection setup/reconfiguration complete message of the UE, the new eNB sends the source eNB IP address and the TEID distributed to the source eNB by the source GW and the source GW IP address to the new SGW, wherein the source eNB and the GW IP address and the source SGW TEID can be sent to the new eNB after the UE or the source eNB is saved; after receiving the source eNB IP address and the source GW TEID message, the new GW sends the CN load configuration information to the source GW, and the source GW replies the CN load configuration information to the new GW; the new GW updates or activates the downlink according to the CN bearing configuration information; and carrying out data transmission.
A second operational procedure, comprising: after receiving the uplink data, the new SGW reads a GTP head or a GTP data packet to obtain a source eNB IP address, a source SGW TEID and a source SGW IP address, sends source eNB IP address and source GW TEID information to the source GW to obtain the CN load configuration information, and the source GW replies the CN load configuration information to the new GW; the new SGW updates or activates a downlink according to the CN bearing configuration information; and carrying out downlink data transmission.
Therefore, by adopting the scheme, when the user equipment is accessed to the target base station, the target base station can acquire the source link information between the source base station and the core network, and then the source link information is sent to the core network, so that the core network establishes a downlink with the target base station based on the source link information. Therefore, signaling to be interacted between the target base station and the core network in the process of establishing the link is reduced, so that the delay of establishing the link between the target base station and the core network is reduced, the requirement of low service delay is met, and the use experience of a user is improved.
Example V,
An embodiment of the present invention provides a base station, as shown in fig. 10, including:
a management unit 1001, configured to switch a user equipment that establishes an RRC connection with the user equipment to a target base station, or establish a connection between the user equipment and the target base station;
an information sending unit 1002, configured to send source link information for establishing a source link between the ue and the core network side to a target base station.
The source link information of the source base station at least comprises: internet protocol IP address information, port number of the source base station. Alternatively, there may be included: the IP address of the source base station, the TEID allocated to the source base station by the source gateway GW, and the IP address of the source GW.
By adopting the scheme, when the user equipment is accessed to the target base station, the target base station can acquire the source link information between the source base station and the core network, and then the source link information is sent to the core network, so that the core network establishes a downlink with the target base station based on the source link information. Therefore, signaling to be interacted between the target base station and the core network in the process of establishing the link is reduced, so that the delay of establishing the link between the target base station and the core network is reduced, the requirement of low service delay is met, and the use experience of a user is improved.
Example six,
An embodiment of the present invention provides a gateway, as shown in fig. 11, including:
a first link management unit 1101, configured to receive source link information of a source base station sent by a target base station, and establish an uplink with the target base station connected to a user equipment;
a second link management unit 1102 configured to establish a downlink with the target base station based on source link information of the source base station; and performing data interaction with the target base station through the uplink and the downlink.
Here, in this embodiment, the acquiring source link information of the source base station corresponding to the user equipment includes: acquiring source link information of the source base station from a user equipment side; or receiving source link information of the source base station sent by the source base station.
The determination method for establishing connection with the ue may be, by determining whether an RRC connection setup/reconfiguration complete message sent by the ue is received; alternatively, it may be determined to establish a connection with the user equipment for receiving a data message sent by the user equipment.
The scheme provided by the embodiment can be applied to at least two scenes:
and in the first scenario, the UE does not change the gateway.
In this scenario, there may be the following two operation flows:
in a first operation procedure, source link information of the source base station at least includes: internet Protocol (IP) address information, port number of the source base station.
The first operation flow specifically comprises the following steps: after the target base station establishes connection with User Equipment (UE), an uplink of the target base station and a core network side is established, and an IP address of a source base station and a port number distributed to the source base station by a gateway are sent to the gateway; the IP address and port number of the source base station may be saved by the UE or the source eNB and then sent to the new eNB. After receiving the data, the gateway automatically establishes or activates a link between the gateway and the source eNB and the new eNB, establishes a downlink on a CN side, and carries out data transmission.
In the second operation procedure, when the target base station directly forwards the data sent by the UE, the source link information is added in the data and sent to the gateway, that is: receiving a first uplink data packet sent by user equipment; adding source link information of the source base station in a preset data bit of the first uplink data packet; and sending the first uplink data packet added with the source link information of the source base station to a core network through the uplink. The preset data bits of the first uplink data packet may be: the GTP header of the first uplink data packet or the GTP data packet.
The second operation flow can be seen in fig. 4, which specifically includes: after a User Equipment (UE) establishes a connection with a target base station, wherein the target base station can be a new evolved node B (eNB); when transmitting data, the new eNB carries the IP address of the source eNB and the port number of the source eNB to the gateway in the GTP Header (e.g., Extension Header) of the first uplink packet of the UE or in the GTP packet, and establishes the CN side uplink. The source eNB IP address and port number may be saved by the UE or the source eNB and sent to the new eNB. After the SGW receives the uplink data, the SGW reads the GTP header or the GTP packet to obtain the IP address of the source eNB and the port number allocated to the source eNB by the SGW, and automatically establishes or activates its link with the source eNB between it and the new eNB. And carrying out data transmission.
And a second scenario is that the UE changes the gateway.
The source link information of the source base station at least comprises: the IP address of the source base station, the TEID allocated to the source base station by the source gateway GW, and the IP address of the source GW.
The sending the source link information of the source base station to the core network through the uplink includes: receiving a first uplink data packet sent by user equipment; adding source link information of the source base station in a preset data bit of the first uplink data packet; and sending the first uplink data packet added with the source link information of the source base station to a core network through the uplink.
And the second link management unit is used for establishing or activating a source link with the source base station between the source link and a target base station based on the IP address information of the source base station and the port number allocated to the source base station by the source gateway.
In this scenario, there are also two operation flows, the first operation flow includes: after receiving the RRC connection setup/reconfiguration complete message of the UE, the new eNB sends the source eNB IP address and the TEID distributed to the source eNB by the source GW and the source GW IP address to the new SGW, wherein the source eNB and the GW IP address and the source SGW TEID can be sent to the new eNB after the UE or the source eNB is saved; after receiving the source eNB IP address and the source GW TEID message, the new GW sends the CN load configuration information to the source GW, and the source GW replies the CN load configuration information to the new GW; the new GW updates or activates the downlink according to the CN bearing configuration information; and carrying out data transmission.
A second operational procedure, comprising: after receiving the uplink data, the new SGW reads a GTP head or a GTP data packet to obtain a source eNB IP address, a source SGW TEID and a source SGW IP address, sends source eNB IP address and source GW TEID information to the source GW to obtain the CN load configuration information, and the source GW replies the CN load configuration information to the new GW; the new SGW updates or activates a downlink according to the CN bearing configuration information; and carrying out downlink data transmission.
Therefore, by adopting the scheme, when the user equipment is accessed to the target base station, the target base station can acquire the source link information between the source base station and the core network, and then the source link information is sent to the core network, so that the core network establishes a downlink with the target base station based on the source link information. Therefore, signaling to be interacted between the target base station and the core network in the process of establishing the link is reduced, so that the delay of establishing the link between the target base station and the core network is reduced, the requirement of low service delay is met, and the use experience of a user is improved.
Example seven,
The present embodiment provides a link establishment system, as shown in fig. 12, including:
the target base station 1201 is configured to acquire source link information of a source base station corresponding to a user equipment after establishing a connection with the user equipment; sending the source link information of the source base station to a gateway through the uplink, and establishing the uplink with a core network;
a gateway 1202 for establishing a downlink with the target base station based on source link information of the source base station; and performing data interaction with the target base station through the uplink and the downlink.
The functions of the target base station and the gateway in this embodiment are the same as those in the third and fifth embodiments, and are not described herein.
The integrated module according to the embodiment of the present invention may also be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as an independent product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a base station, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (23)
1. A link establishment method applied to a target base station is characterized by comprising the following steps:
after establishing connection with user equipment, acquiring source link information of a source base station corresponding to the user equipment;
establishing an uplink with a core network, and sending source link information of the source base station to the core network through the uplink, so that the core network establishes a downlink with the target base station based on the source link information of the source base station;
and performing data interaction with a core network through the uplink and the downlink.
2. The method according to claim 1, wherein the acquiring source link information of a source base station corresponding to the user equipment includes:
acquiring source link information of the source base station from a user equipment side;
alternatively, the first and second electrodes may be,
and acquiring source link information of the source base station from the source base station.
3. The method of claim 1, wherein the source link information of the source base station comprises at least: the IP address information of the source base station and the port number allocated to the source base station by the source gateway.
4. The method of claim 1, wherein the source link information of the source base station comprises at least: the IP address of the source base station, the port number allocated to the source base station by the source gateway and the IP address of the source gateway.
5. The method according to claim 3 or 4, wherein the sending the source link information of the source base station to a core network via the uplink comprises:
receiving a first uplink data packet sent by user equipment; adding source link information of the source base station in a data packet header or a preset data bit of the first uplink data packet; and sending the first uplink data packet added with the source link information of the source base station to a core network through the uplink.
6. A link establishment method applied to a source base station is characterized by comprising the following steps:
switching user equipment establishing RRC connection with the user equipment to a target base station, or establishing connection between the user equipment and the target base station;
sending source link information aiming at a source link established between the user equipment and a core network side to a target base station; and establishing an uplink with a core network, wherein the source link information is sent to the core network through the uplink, so that the core network establishes a downlink with the target base station based on the source link information of the source base station.
7. A link establishment method applied to a gateway is characterized by comprising the following steps:
receiving source link information of a source base station sent by a target base station, and establishing an uplink with the target base station connected with user equipment; establishing a downlink with the target base station based on source link information of the source base station;
and performing data interaction with the target base station through the uplink and the downlink.
8. The method of claim 7, wherein the source link information of the source base station comprises at least: the IP address information of the source base station and the port number allocated to the source base station by the source gateway.
9. The method of claim 7, wherein the establishing downlink with the target base station based on the source link information of the source base station comprises:
and establishing or activating a source link with the source base station between the source link and a target base station based on the IP address information of the source base station and the port number allocated to the source base station by the source gateway.
10. The method of claim 7, wherein the source link information of the source base station comprises at least: the IP address of the source base station, the TEID allocated to the source base station by the source gateway and the IP address of the source gateway.
11. The method of claim 10, wherein the establishing downlink with the target base station based on the source link information of the source base station comprises:
acquiring configuration information carried by a source gateway from a source base station based on an IP address of the source base station and a TEID message of the source base station;
and establishing a downlink with the target base station based on the configuration information carried by the source gateway.
12. A base station, comprising:
the information processing unit is used for acquiring source link information of a source base station corresponding to the user equipment;
a link management unit, configured to establish an uplink with a core network, and send source link information of the source base station to the core network, so that the core network establishes a downlink with the base station based on the source link information of the source base station; and performing data interaction with a core network through the uplink and the downlink.
13. The base station according to claim 12, wherein the information processing unit is configured to obtain source link information of the source base station from a user equipment side;
alternatively, the first and second electrodes may be,
and the information processing unit is used for acquiring the source link information of the source base station from the source base station.
14. The base station of claim 12, wherein the source link information of the source base station comprises at least: the IP address information of the source base station and the port number allocated to the source base station by the source gateway.
15. The base station of claim 12, wherein the source link information of the source base station comprises at least: the IP address of the source base station, the port number allocated to the source base station by the source gateway and the IP address of the source gateway.
16. The base station according to claim 14 or 15, wherein the link management unit is configured to receive a first uplink data packet sent by a user equipment; adding source link information of the source base station in a data packet header or a preset data bit of the first uplink data packet; and sending the first uplink data packet added with the source link information of the source base station to a core network through the uplink.
17. A base station, comprising:
the management unit is used for switching user equipment establishing RRC connection with the management unit to a target base station, or establishing connection between the user equipment and the target base station;
an information sending unit, configured to send source link information for establishing a source link between the user equipment and a core network side to a target base station; and the core network establishes an uplink with the core network, and the source link information is sent to the core network through the uplink, so that the core network establishes a downlink with the target base station based on the source link information of the source base station.
18. A gateway, comprising:
a first link management unit, configured to receive source link information of a source base station sent by a target base station, and establish an uplink with the target base station connected to a user equipment;
a second link management unit, configured to establish a downlink with the target base station based on source link information of the source base station; and performing data interaction with the target base station through the uplink and the downlink.
19. The gateway of claim 18, wherein the source link information of the source base station comprises at least: the IP address information of the source base station and the port number allocated to the source base station by the source gateway.
20. The gateway according to claim 19, wherein said second link management unit is configured to establish or activate a source link with said source base station between a target base station and a target base station based on the IP address information of said source base station and the port number assigned to the source base station by said source gateway.
21. The gateway of claim 18, wherein the source link information of the source base station comprises at least: the IP address of the source base station, the TEID allocated to the source base station by the source gateway and the IP address of the source gateway.
22. The gateway according to claim 21, wherein the second link management unit is configured to obtain the configuration information carried by the source gateway from the source base station based on the IP address of the source base station and the TEID message of the source base station; and establishing a downlink with the target base station based on the configuration information carried by the source gateway.
23. A link establishment system, comprising:
the target base station is used for acquiring source link information of a source base station corresponding to the user equipment after establishing connection with the user equipment; establishing an uplink with a core network, and sending source link information of the source base station to a gateway through the uplink;
a gateway for establishing a downlink with the target base station based on source link information of the source base station; and performing data interaction with the target base station through the uplink and the downlink.
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