WO2014000446A1

WO2014000446A1 - Data flow distribution method and device

Info

Publication number: WO2014000446A1
Application number: PCT/CN2013/070967
Authority: WO
Inventors: 张兴新; 王学寰
Original assignee: 华为技术有限公司
Priority date: 2012-06-30
Filing date: 2013-01-25
Publication date: 2014-01-03
Also published as: CN103517340A

Abstract

An embodiment of the present invention provides a data flow distribution method and device. The data flow distribution method comprises: a user equipment UE receiving a data flow distribution instruction sent by a network side device, the flow distribution instruction being a radio resource control RRC message; and the UE accessing a WIFI network to transmit data. By means of the data flow distribution method and device provided in this embodiment, the UE selects a WIFI network for access according to the received flow distribution instruction, so as to implement service data flow distribution.

Description

Data shunting method and device The application is submitted to the Chinese Patent Office on June 30, 2012, and the application number is

The priority of the Chinese patent application is hereby incorporated by reference.

The present invention relates to communications technologies, and in particular, to a data offloading method and device. Background technique

With the development of mobile communication technologies, high-speed and large-bandwidth services are bringing people a colorful application experience. In particular, the large-scale growth of smartphones and the rich applications on the mobile Internet have brought new vitality to communications while also bringing more challenges to operations. For such huge traffic, the network currently operating has experienced tremendous pressure. The operating network has remained in a high load for a long time, and the expanded capacity will soon be consumed by the increased business. Therefore, a low-cost and large-capacity solution is urgently needed to solve this increasingly acute problem. SUMMARY OF THE INVENTION Embodiments of the present invention provide a data offloading method and device, so as to implement service data offloading. An embodiment of the present invention provides a data offloading method, including:

The user equipment UE receives the offloading instruction sent by the network side device, where the offloading instruction is a radio resource control RRC message;

The UE accesses the WIFI network for data transmission.

An embodiment of the present invention provides a data offloading method, including:

The network side device sends a offloading instruction to the user equipment UE, where the offloading instruction is a radio resource control RRC message;

The network side device performs data transmission with the UE through a WIFI network.

The data gateway sends the offloading command to the user equipment UE, so that the UE according to the offloading finger Accessing the WIFI network, the WIFI network establishes a transmission channel with the data gateway; and the data gateway performs data transmission with the UE through the WIFI network.

An embodiment of the present invention provides a user equipment, including:

a first receiving unit, configured to receive a data offloading command sent by the network side device, where the offloading instruction is a radio resource control RRC message;

The first data transmission unit is configured to access the WIFI network, and perform data transmission by using the WIFI network.

The embodiment of the invention provides a network side device, including:

a third sending unit, configured to send a offloading instruction to the user equipment UE, where the offloading command is a radio resource control RRC message;

And a second data transmission unit, configured to perform, by the network side device, data transmission with the UE by using a WIFI network.

The embodiment of the invention provides a data gateway, including:

a fourth sending unit, configured to send the offloading instruction to the user equipment UE, so that the UE establishes an association with the access point WIFI network according to the offloading instruction, where the WIFI network establishes a transmission channel with the data gateway According to the foregoing technical solution, the data offloading method and device provided by the embodiment of the present invention, the UE receives the offloading instruction sent by the network side device, accesses the WIFI network, and performs data transmission through the WIFI network. The UE accesses the WIFI network according to the received shunting instruction, and implements service data offloading. Moreover, the UE can turn off the WIFI module by default, and then open the WIFI module at the request of the network side device, thereby saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor.

1 is a flowchart of a first data offloading method according to an embodiment of the present invention;

2 is a signaling diagram of a first data offloading method according to an embodiment of the present invention; FIG. 3 is a signaling diagram of a second data offloading method according to an embodiment of the present invention;

4 is a signaling diagram of a third data offloading method according to an embodiment of the present invention;

FIG. 5 is a signaling diagram of a fourth data offloading method according to an embodiment of the present invention;

FIG. 6 is a flowchart of a second data offloading method according to an embodiment of the present invention;

FIG. 7 is a flowchart of a third data offloading method according to an embodiment of the present invention;

FIG. 8 is a signaling diagram of a fifth data offloading method according to an embodiment of the present invention;

FIG. 9 is a signaling diagram of a sixth data offloading method according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of another network side device according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of a data gateway according to an embodiment of the present disclosure;

FIG. 15 is a schematic structural diagram of another data gateway according to an embodiment of the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a flowchart of a first data offloading method according to an embodiment of the present invention. As shown in FIG. 1 , the data offloading method provided in this embodiment may be specifically applied to a process of splitting service data in a communication system provided with a Wireless Fidelity (WIFI) network. The communication system may specifically be a Long Term Evolution (LTE) communication system or a Universal Mobile Telecommunications System (UMTS).

Gateway, referred to as P-GW), Service Gateway (S-GW), Mobility Management Entity (MME), E-UTRAN Node B (eNB), and WIFI network Incoming Access Point is formed, and the access point is referred to as AP). The UMTS communication system specifically includes a Gateway GPRS Support Node (Gateway GPRS Support Node, Referred to as GGSN), GPRS Service Support Node (SGSN), base station Node B, Radio Network Controller (RNC) and WIFI network.

The data offloading method provided in this embodiment specifically includes:

Step A10: The user equipment UE receives the offloading instruction sent by the network side device, where the offloading instruction is a radio resource control RRC message;

Step A20: The UE accesses the WIFI network for data transmission.

Specifically, in the LTE communication system, the eNB may implement the network side device. In the UMTS communication system, the Node B and the RNC may cooperate to implement the network side device. Of course, in other communication systems, the network side device may use a similar function. The network element is implemented.

The UE receives a shunt instruction (WIFI Offload Request) sent by the network side device, where the offloading instruction is specifically used to instruct the UE to enable the WIFI function module, and the shunt instruction may be a WIFI offload request, or may be a WIFI module open command. . When the offloading command is a WIFI offloading request, the UE may determine whether to accept the WIFI offloading, and if accepted, the WIFI splitting decision will be accepted. When the shunt instruction is a WIFI module open command, the UE directly opens the WIFI module according to the WIFI module open command. The offloading command is an RRC message, and the offloading command may be a redefined RRC message, or may be carried by an existing RRC message. For example, a field is added to the existing RRC message to indicate a shunting instruction. The UE accesses the WIFI network, and mutual authentication between the UE and the WIFI network can also be performed during the access process. The UE can receive downlink data or send uplink data through the WIFI network.

The traffic distribution node may be the network side device or the data gateway in the communication system. When the network side device is a traffic distribution node, the WIFI network is set between the network side device and the UE, and the data gateway can send the downlink data to the network side device first, and the network side device sends the downlink data to the UE through the WIFI network. The uplink data may be sent to the network side device through the WIFI network, and the network side device sends the uplink data to the data gateway. When the data gateway is a split node, the WIFI network is set between the data gateway and the UE, and the data gateway sends the downlink data to the UE through the WIFI network, and the UE can also directly send the uplink data to the data gateway through the WIFI network.

In practical applications, when the power of the UE is insufficient, or the offloading policy of the UE does not support offloading, or the UE does not find a suitable WIFI network when scanning the WIFI network, the UE may reject the WIFI offload, and determine and reject the reject WIFI offload. The reason is reported to the network side device. When the UE refuses When the WIFI is offloaded, the interaction between the UE and the network device can be implemented according to the process of the prior art, and details are not described herein.

In the data offloading method provided by the embodiment, the UE receives the offloading command sent by the network side device, where the offloading command is a radio resource control RRC message, and accesses the WIFI network for data transmission. The UE selects the WIFI network access according to the received shunting instruction, and implements service data offloading. Moreover, the UE can turn off the WIFI module by default, and then open the WIFI module at the request of the network side device device, thereby saving energy consumption.

In a practical application, the UE may be in different states, and the data shunting method provided in this embodiment may be triggered in multiple different manners. The implementation manners may be different for different application scenarios. The present embodiment is described in detail below for different application scenarios.

In this embodiment, the UE is in an idle state. Correspondingly, in step A10, the user equipment UE receives the offloading command sent by the network side device, and specifically includes:

The UE receives the RRC paging message sent by the network side device, where the RRC paging message carries the offloading instruction.

If the UE reports the WIFI offloading decision to the network side device, the step A20, the UE accesses the WIFI network for data transmission, which may include:

The UE sends an RRC connection request message carrying the WIFI offload decision to the network side device, or sends a management message carrying the WIFI offload decision to the network side device through the WIFI network, so that the network The side device sends the downlink data to the UE through the WIFI network according to the accepted WIFI offload decision, and receives the downlink data sent by the WIFI network.

Specifically, when the downlink data of the UE reaches the data gateway, the data gateway routes the downlink data to the serving gateway, and when the UE is in an idle state, the serving gateway needs to wake up the UE. When receiving the downlink data sent from the data gateway to the UE, the serving gateway buffers the downlink data and sends a GTP-C downlink data notification message to the network management entity. The GTP-C downlink data notification message may carry data Context information of the downlink data, and the data context information may include information such as a QoS Class Identifier (QCI), a service type, and the like. The management message carrying the WIFI offload decision may be, but is not limited to, an associated request frame. In the LTE communication system, the P-GW can implement the data gateway, the S-GW can implement the service gateway, and the MME can implement the network management entity. In the UMTS communication system, the GGSN can implement the service gateway, the SGSN. The network management entity can be implemented, and the SGSN can also implement the function of the service gateway. Of course, in other communication systems, the network management entity can implement the network element with similar functions.

The network management entity sends an S1-AP Paging message to the network side device, where the S1-AP paging message carries data context information. The network side device determines whether to request the UE to perform WIFI offload according to the data context information. In the foregoing determining process, the network side device may also consider factors such as the current load situation and the UE's offload policy. When the UE is required to perform the WIFI offloading, the RRC paging message (RRC Paging) is sent to the UE, and the RRC paging message carries the offloading instruction. The network side device can also carry the WIFI network information, such as the network identifier BSSID and the channel number Channel No., in the RRC paging, so that the UE can quickly discover and access the WIFI network according to the WIFI network information.

The UE may determine whether to accept the WIFI offload according to its own power or the preset policy or the result of the scan. If accepted, the UE accesses the WIFI network, and the UE may select the accessed WiFi network by measurement, and the UE may also according to the WIFI network information. Direct access to the WIFI network indicated by the WIFI network information. The UE sends the WIFI Offload Response (WIFI Offload Response) to the network side device in the RRC Connection Request message to implement the report of the offload decision. The UE may also carry the WIFI offloading decision in the management message and send it to the network side device through the WIFI network. The RRC connection request message may also carry the BSSID of the WIFI network to notify the network side device. After the UE accesses the WIFI network, the WIFI network can also actively report the status of the UE to the network side device, indicating that the UE accepts the wifi offload.

The serving gateway sends the downlink data to the network side device, and the network side device sends the downlink data to the UE through the WIFI network.

In a practical application, after receiving the RRC connection request message, the network side device may establish an RRC Connection Setup message and an RRC Connection Setup Complete message to establish a network side device and the UE. The radio bearer may carry a non-access stratum (NAS) service request in the RRC connection setup complete message sent to the network side device to request service data from the network side. The network side device reports the NAS service request to the network management entity, and establishes an S1 bearer with the serving gateway through the network management entity, and performs signaling transmission through the S1 bearer.

FIG. 2 is a signaling diagram of a first data offloading method according to an embodiment of the present invention. Combined with Figure 2, The LTE communication system is taken as an example, and the processing flow when the UE is in an idle state and the downlink data of the UE arrives is described in detail.

Step 1. The P-GW routes the downlink data to the S-GW.

Step 2: The S-GW sends a GTP-C downlink data notification message to the MME, where the GTP-C downlink data notification message carries a Data Context (QCI);

Step 3: The MME sends an S1-AP paging message to the eNB, where the S1-AP paging message carries a Data Context (QCI);

Step 4: The eNB instructs the UE to perform WIFI offload according to the QCI in the S1-AP paging message. Step 5: The eNB initiates an RRC paging message to the UE, where the RRC paging message carries a WIFI Offload Request.

Step 6, the UE determines whether to accept the WIFI offload, if yes, proceed to step 7;

Step 7. The UE performs authentication association and accesses the WIFI network.

Step 8: The UE sends an RRC connection request message to the eNB, where the RRC connection request message carries a WIFI Offload Response;

Step 9. The eNB sends an RRC connection setup message to the UE.

Step 10: The UE sends an RRC connection setup complete message to the eNB, where the RRC connection setup complete message carries the NAS service request.

Step 11: The eNB reports an initial UE message to the MME, where the initial UE message carries a NAS service request.

Step 12: The eNB establishes an S1 bearer with the S-GW through the MME.

Step 13: The S-GW sends the downlink data to the eNB, and the eNB sends the downlink data to the UE through the WIFI network.

When the UE is in an idle state, the UE may also actively request access to the network. In this embodiment, before the user equipment UE receives the offloading command sent by the network side device, the user equipment UE may further include:

Sending, by the UE, a first RRC connection request message to the network side device;

Correspondingly, in step A10, the user equipment UE receives the offloading instruction sent by the network side device, and specifically includes:

Receiving, by the UE, an RRC connection setup message sent by the network side device, where the RRC connection setup message carries the offloading instruction; If the UE reports the WIFI offloading decision to the network side device, the step A20, the UE accesses the WIFI network for data transmission, which may include:

The UE sends an RRC connection setup complete message carrying the WIFI offload decision to the network side device, or sends a management message carrying the WIFI offload decision to the network side device by using the WIFI network, and sends the uplink data to the network side device. The WIFI network, so that the WIFI network sends the uplink data to the network side device.

Specifically, the UE sends the first RRC connection request message to the network side device, and the network side device may determine whether to request the UE to perform WIFI offload according to the current load situation and the level of the UE, and the network side device may further indicate according to the current load condition. The UE performs WIFI offloading on certain downlink data of QoS. The network side device sends an RRC connection setup message to the UE, where the RRC connection setup message carries the offloading instruction, and may also carry the offload QoS (Offload QoS) information. The UE may determine whether to accept the WIFI offload according to its own power or the preset policy or the result of the scan. If accepted, the UE accesses the WIFI network. The UE will receive the WIFI offloading decision and send it to the network side device in the RRC connection setup complete message to implement the report of the offload decision. The UE may also carry the WIFI offloading decision in the management message and send it to the network side device through the WIFI network. When the downlink data of the UE reaches the data gateway, the data gateway routes the downlink data to the serving gateway, and the serving gateway sends the downlink data to the network side device, and the network side device passes the downlink data through the standby, and the network side device sends the uplink data again. Give the data gateway.

In an actual application, the RRC connection setup complete message sent by the UE to the network side device may also carry the NAS service request, and the network side device transparently transmits the NAS service request to the network management entity, triggering the network management entity to request the network side device to The UE establishes an initial context, and the network side device includes, in the "initial context establishment" message, the network side device allocates a transport layer address in the downlink direction for each bearer of the UE, and finally transmits to the serving gateway, and establishes a relationship between the network side device and the data gateway. Hosted.

FIG. 3 is a signaling diagram of a second data offloading method according to an embodiment of the present invention. Referring to FIG. 3, taking the LTE communication system as an example, the processing flow when the UE is in an idle state and the UE requests to access the network is described in detail.

Step 1: The UE sends an RRC connection request message to the eNB.

Step 2: The eNB instructs the UE to perform WIFI offloading on downlink data of certain QoS according to the current load situation. Step 3: The eNB sends an RRC connection setup message to the UE, where the RRC connection setup message carries a WIFI Offload Request.

Step 4: The UE determines whether to accept the WIFI offload, if yes, step 5;

Step 5: The UE performs authentication association and accesses the WIFI network.

Step 6: The UE sends an RRC connection setup complete message to the eNB, where the RRC connection setup request carries a WIFI Offload Response and a NAS service request.

Step 7. The NAS service request is transparently transmitted to the MME, and step 8 is triggered.

Step 8. The MME requests the eNB to establish an initial context for the UE.

Step 9. The eNB sends the downlink transport address to the S-GW.

Step 10: When the downlink data of the UE reaches the P-GW, the P-GW routes the downlink data to

The S-GW sends the downlink data to the eNB, and the eNB sends the downlink data to the P-GW through the WIFI network.

The UE may also be in an active state. In this embodiment, in step A10, the user equipment UE receives the offloading command sent by the network side device, which specifically includes:

Receiving, by the UE, an RRC connection reconfiguration message sent by the network side device, where the RRC connection reconfiguration message carries the offloading instruction;

The UE sends an RRC connection reconfiguration complete message carrying the WIFI offload decision to the network side device, or sends a management message carrying the WIFI offload decision to the network side device through the WIFI network, so as to enable the The network side device sends the downlink data to the UE through the WIFI network according to the accepted WIFI offload decision, and receives the downlink data sent by the WIFI network.

Specifically, when the downlink data of the UE reaches the data gateway, the data gateway routes the downlink data to the serving gateway. When the UE is in the active state, the serving gateway sends the downlink data to the network side device, and the network side device can learn the downlink data according to the bearer. QoS, determining whether to request the UE to perform WIFI offload according to the QoS of the downlink data, the current load condition, and the offloading policy of the UE. When the UE is required to perform WIFI offloading, the RRC connection reconfiguration request is sent to the UE, and the RRC connection reconfiguration request is sent. It carries a shunt instruction. The network side device can also redefine an RRC offloading finger. Order. The UE may determine whether to accept the WIFI offload according to its own power or the preset policy or the result of the scan. If accepted, the UE accesses the WIFI network. The UE will receive the WIFI offloading decision and send it to the network side device in the RRC connection reconfiguration complete message, or directly send the redefined RRC WIFI Offload Response to implement the offloading decision. The UE may also carry the WIFI offloading decision in the management message and send it through the WIFI network. FIG. 4 is a third data offloading method signaling diagram provided by the embodiment of the present invention. As shown in FIG. 4, the LTE communication system is taken as an example, and the processing flow when the UE is in an active state and the downlink data of the UE arrives is described in detail.

Step 1: The P-GW routes the downlink data to the S-GW, and the S-GW sends the downlink data to the eNB. Step 2: The eNB can learn the QoS of the downlink data according to the bearer, and instruct the UE to perform WIFI offloading.

Step 3: The eNB sends an RRC WIFI Offload Request to the UE.

Step 4: The UE determines whether to accept the WIFI offload, if yes, step 5;

Step 5. The UE accesses the WIFI network.

Step 6. The UE sends an RRC WIFI Offload Response to the eNB.

Step 7. The eNB sends the downlink data to the UE through the WIFI network.

In the above process, steps 5 and 6 can be performed simultaneously.

When the UE is in an active state, the UE may also trigger a WIFI offload by requesting a bearer resource modification from the network management entity. In this embodiment, before the UE receives the RRC connection reconfiguration message, the UE may further include:

The UE sends a bearer resource modification request to the network management entity.

Specifically, the UE sends a bearer resource modification request to the network management entity, the network management entity sends a bearer resource command to the serving gateway, the service gateway sends a bearer resource command to the data gateway, and the data gateway sends a create/update/delete bearer request to the service gateway, and the service The gateway sends a create/update/delete bearer request to the network management entity, and the network management entity sends a radio access bearer setup/update/delete request/bearer management request to the network side device, and the network side device can establish/update according to the radio access bearer. /Remove request/bearer management request to learn the QoS of the corresponding bearer, and determine whether to request the UE to perform WIFI offload according to the QoS of the bearer, the current load situation, and the offload policy of the UE. When the UE needs to be requested to perform WIFI offload, the RRC connection is sent to the UE. Configuration message, the RRC connection reconfiguration The message carries a shunt instruction. The UE may determine whether to accept the WIFI offload according to its own power or the preset policy or the result of the scan. If accepted, the UE accesses the WIFI network. The UE sends the WIFI offloading decision to the RRC connection reconfiguration complete message and sends it to the network side device. The network side device sends a radio access bearer setup/modify/delete response to the network management entity, and the UE reports the bearer management response to the network side device. The network management entity then completes the establishment/modification/deletion of the bearer via the network management entity and the service gateway. When the downlink data of the UE reaches the data gateway, the data gateway routes the downlink data to the serving gateway, and the serving gateway sends the downlink data to the network side device, and the network side device sends the downlink data to the UE through the WIFI network. The UE may also send the uplink data to the network side device through the WIFI network, and the network side device sends the uplink data to the data gateway.

FIG. 5 is a signaling diagram of a fourth data offloading method according to an embodiment of the present invention. Combined with Figure 5,

The LTE communication system is taken as an example, and the processing flow when the UE is in an active state and the UE triggers the establishment/modification/deletion of the bearer is described in detail.

Step 1: The UE sends a bearer resource modification request to the MME.

Step 2: The MME sends a bearer resource command to the S-GW.

Step 3: The S-GW sends a bearer resource command to the P-GW.

Step 4: The P-GW sends a create/update/delete bearer request to the S-GW.

Step 5: The S-GW sends a create/update/delete bearer request to the MME.

Step 6: The MME sends an E-RAB setup/modification/delete request/bearer management request to the eNB. Step 7: The eNB learns the QoS of the corresponding bearer according to the E-RAB setup/modification/delete request/bearer management request, according to the bearer QoS. Instructing the UE to perform WIFI offloading;

Step 8: The eNB sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration message carries a WIFI Offload Request.

Step 9, the UE determines whether to accept the WIFI offload, if yes, step 10;

Step 10: The UE accesses the WIFI network.

Step 11: The UE sends an RRC connection reconfiguration complete message to the eNB, where the RRC connection reconfiguration complete message carries a WIFI Offload Response;

Step 12: The eNB sends an E-RAB setup/modify/delete response to the MME.

Step 13: The UE sends a bearer management response to the MME by using the eNB.

Step 14. The MME sends a create/update/delete bearer response to the S-GW.

Step 15: The S-GW sends a create/update/delete bearer response to the P-GW. Step 16: When the downlink data of the UE reaches the P-GW, the P-GW routes the downlink data to the S-GW, and the S-GW sends the downlink data to the eNB, and the eNB sends the downlink data to the P through the WIFI network. -GW.

It should be noted that the MME sending an E-RAB setup/modification/delete request/bearer management request to the eNB may be triggered by multiple conditions, such as a policy and charging rules function (PCRF)/ The policy and charging enforcement function (PCEF) can trigger the establishment/deletion of the interaction between the PW and the P-GW. The Home Subscriber Server (HSS) can trigger the bearer when interacting with the MME. Create/modify/delete.

In this embodiment, the network side device is a base station eNB, and the network management entity is a mobility management entity MME.

In the above embodiment, the traffic distribution node is a network side device. When the traffic distribution node is a data gateway, the data distribution method provided in this embodiment is described in detail.

In an implementation manner, when the downlink data of the UE reaches the data gateway, the data gateway queries the serving gateway for the status of the UE, and instructs the UE to perform WIFI offloading. The service gateway can also report the state of the UE to the active state. When the data gateway learns that the UE is in the idle state, the service gateway directly delivers the offloading command to the downlink data notification message to carry the offloading instruction. The network management entity sends a S1-AP Paging message to the network side device, where the S1-AP paging message carries a shunt instruction. The network side device determines whether to request the UE to perform the WIFI offloading. When the UE is required to perform the WIFI offloading, the RRC paging message is sent to the UE, and the RRC paging message carries the shunting instruction. The UE can determine whether to accept the WIFI offload according to its own power or the preset policy or the result of the scan. If accepted, the UE accesses the WIFI network. The WIFI network establishes a transmission channel with the data gateway through the AAA server. The data gateway sends the downlink data to the UE through the WIFI network.

In another implementation manner, the UE is in an active state, the UE sends a bearer resource modification request to the network management entity, the network management entity sends a bearer resource command to the serving gateway, and the service gateway sends a bearer resource command to the data gateway, where the data gateway passes the service gateway. Sending a create/modify/delete bearer request to the network management entity, where the create/modify/delete bearer request carries a splitting instruction. The network management entity sends an E-RAB setup/modification/delete request/bearer management request to the network side device, The E-RAB setup/modify/delete request/bearer management request carries the offloading command, and the network side device sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration message carries the offloading instruction.

The UE may determine whether to accept the WIFI offload according to its own power or the preset policy or the result of the scan. If accepted, the UE accesses the WIFI network. The WIFI network establishes a transmission channel with the data gateway through the AAA server. When the downlink data of the UE reaches the data gateway, the data gateway sends the downlink data to the UE through the WIFI network, and the UE sends the uplink data to the data gateway through the WIFI network.

In this embodiment, before the UE accesses the WIFI network for data transmission, the method may further include:

The UE determines whether to accept the offloading instruction, and if received, accesses the WIFI network.

In this embodiment, in step A10, the UE accesses the WIFI network for data transmission, which may include:

The UE sends an RRC message carrying the WIFI offload decision to the network side device, or sends a management message carrying the WIFI offload decision to the network side device through the WIFI network.

In different application scenarios, the RRC message carrying the WIFI offload decision may be in different forms and may be implemented on the basis of the existing RRC message.

FIG. 6 is a flowchart of a second data offloading method according to an embodiment of the present invention. As shown in FIG. 6 , the data offloading method provided in this embodiment may be implemented in conjunction with the data offloading method shown in FIG. 1 , and the specific implementation process thereof is not described herein.

The data offloading method provided in this embodiment specifically includes:

Step B10: The network side device sends a offloading instruction to the user equipment UE, where the offloading instruction is a radio resource control RRC message. In the data offloading method provided by the embodiment, the network side device sends a shunting instruction to the user equipment UE, where the shunting The command is a radio resource control RRC message, and the network side device performs data transmission with the UE through the WIFI network. The network side device functions as a branching node, and the UE selects the WIFI network access according to the received shunting instruction, and implements service data offloading. Moreover, the UE can turn off the WIFI module by default, and then open the WIFI module at the request of the network side device device, thereby saving energy consumption.

In this embodiment, the UE is in an idle state. Step B10: Before the network side device sends the offloading instruction to the user equipment UE, the network side device may further include: Receiving, by the network side device, a paging request sent by a network management entity;

Correspondingly, in step B10, the network side device sends a shunting instruction to the user equipment UE, which includes:

The network side device determines whether to request the offloading, and if yes, sends an RRC paging message to the UE, where the RRC paging message carries the offloading instruction.

Specifically, the paging request may carry the data context information, and the network side device may determine, according to the data context information, whether to request the offloading.

If the UE reports to the network side device to receive the WIFI offloading decision, the network side device may perform data transmission with the UE through the WIFI network according to the accepted WIFI offloading, before the network side device performs data transmission with the UE through the WIFI network. It can also include:

The network side device receives, by the UE, a second RRC connection request message that carries the WIFI offload decision, or receives a management message that is sent by the UE through the WIFI network and carries a WIFI offload decision.

When the UE is in an idle state, the UE may also actively request access to the network. In this embodiment, in step B10, before the network side device sends the offloading instruction to the user equipment, the network side device may further include: the network side device receiving the first RRC connection request message sent by the UE;

Correspondingly, in step B10, the network side device sends a shunting instruction to the user equipment UE, which may include:

The network side device determines whether to request the offloading, and if yes, sends an RRC connection setup message to the UE, where the RRC connection setup message carries the offloading instruction.

The network side device receives, by the UE, an RRC connection setup complete message carrying a WIFI offload decision, or receives a management message sent by the UE through the WIFI network and carrying a WIFI offload decision.

The UE may also be in an active state. In this embodiment, in step B10, before the network side device sends the offloading instruction to the user equipment UE, the network side device may further include:

Receiving, by the network side device, downlink data delivered by the data gateway;

Step B10, the network side device sends a offloading instruction to the user equipment UE, specifically: The network side device determines whether to request the offloading, and if yes, sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration message carries the offloading instruction.

The network side device receives, by the UE, an RRC connection reconfiguration complete message carrying a WIFI offload decision, or receives a management message sent by the UE through the WIFI network and carrying a WIFI offload decision.

When the UE is in an active state, the UE may also trigger a WIFI offload by requesting a bearer resource modification from the network management entity. In this embodiment, in step B10, the UE is in an active state; before the network side device sends the offloading instruction to the user equipment UE, the network side device may further include:

Receiving, by the network side device, a radio access bearer establishment/modification/deletion request sent by the network management entity;

Step B10: The network side device sends a offloading instruction to the user equipment UE, where: the network side device determines, according to the radio access bearer setup/modify/delete request, whether to request offloading, and if yes, sends an RRC to the UE. The reconfiguration message is connected, where the RRC connection reconfiguration message carries the offloading instruction.

Receiving, by the network side device, the RRC connection reconfiguration complete message carrying the WIFI offload decision, or receiving a management message that is sent by the UE by using the WIFI network and carrying the WIFI offload decision, to the network management The entity sends a radio access bearer setup/modify/delete response.

In this embodiment, in step B20, the network side device performs data transmission with the UE through the WIFI network, and specifically includes:

Receiving, by the network side device, the RRC message that is sent by the UE to carry the WIFI offloading decision, or receiving the decision that the UE sends the WIFI offloading by using the WIFI network And managing the message, and performing data transmission with the UE by using the WIFI network according to the accepted WIFI offload decision.

FIG. 7 is a flowchart of a third data offloading method according to an embodiment of the present invention. As shown in FIG. 7 , the data offloading method provided in this embodiment may be implemented in conjunction with the data offloading method shown in FIG. 1 , and the specific implementation process thereof is not described herein.

The data offloading method provided in this embodiment specifically includes:

Step C10: The data gateway sends the offloading instruction to the user equipment UE, so that the UE accesses the WIFI network according to the offloading instruction, and the WIFI network establishes a transmission channel with the data gateway. The data distribution gateway sends the offloading instruction to the user equipment UE, so that the UE accesses the WIFI network according to the shunting instruction, the WIFI network establishes a transmission channel with the data gateway, and the data gateway performs data transmission with the UE through the WIFI network. The data gateway acts as a branching node, and the UE selects the WIFI network access according to the received shunting instruction, and implements service data offloading. Moreover, the UE can turn off the WIFI module by default, and then open the WIFI module at the request of the network side device device, thereby saving energy consumption.

In this embodiment, in step C10, the data gateway sends the offloading instruction to the user equipment UE, which specifically includes:

When the downlink data of the UE arrives, the data gateway instructs the serving gateway to perform WIFI offloading, so that the serving gateway sends a downlink data notification carrying the offloading instruction to the network management entity, where the network management entity goes to the network. The side device sends a paging request carrying the offloading command, and the network side device sends an RRC paging message carrying the offloading instruction to the UE, and the UE accesses the WIFI network according to the offloading instruction. Determining that the WIFI network establishes a transmission channel with the data gateway;

The data gateway sends the downlink data to the UE through the WIFI network.

Specifically, when the downlink data of the UE reaches the data gateway, the data gateway queries the serving gateway for the status of the UE, and instructs the UE to perform WIFI offloading. The serving gateway can also report the status of the UE to the serving gateway. When the data gateway learns that the UE is in the idle state, it directly delivers the offloading command to the serving gateway. The QoS of the offloaded service can be carried in the order. The serving gateway sends a GTP-C downlink data notification message to the network management entity, where the GTP-C downlink data notification message carries a traffic offloading instruction. The network management entity sends a S1-AP Paging message to the network side device, where the S1-AP paging message carries a shunt instruction. The network side device determines whether the UE is requested to perform the WIFI offloading. When the UE is required to perform the WIFI offloading, the RRC paging message is sent to the UE, and the RRC paging message carries the shunting instruction.

The UE may determine whether to accept the WIFI offload according to its own power or the preset policy or the result of the scan. If accepted, the UE accesses the WIFI network. The WIFI network establishes a transmission channel with the data gateway through the AAA server or HSS. The data gateway sends the downlink data to the UE through the WIFI network.

FIG. 8 is a signaling diagram of a fifth data offloading method according to an embodiment of the present invention. As shown in FIG. 8 , the LTE communication system is taken as an example, and the processing flow when the UE is in an idle state and the downlink data of the UE arrives is described in detail.

Step 1. The P-GW sends the WIFI Offload Request to the S-GW.

Step 2: The S-GW sends a downlink data notification to the MME, where the downlink data notification carries a WIFI Offload Request;

Step 3: The MME sends an S1-AP paging message to the eNB, where the S1-AP paging message carries a WIFI Offload Request;

Step 4: The eNB initiates an RRC paging message to the UE, where the RRC paging message carries a WIFI Offload Request;

Step 5: The UE determines whether to accept the WIFI offload, if yes, step 6;

Step 6. The UE performs authentication association and accesses the WIFI network.

Step 7. The WIFI network establishes a transmission channel with the P-GW through the AAA server.

Step 8. The P-GW sends the downlink data to the UE through the WIFI network.

In this embodiment, the UE is in an active state, and accordingly,

Step C10: The data gateway sends the offloading instruction to the user equipment UE, where the method includes: sending, by the data gateway, the create/update/delete bearer request that carries the offloading instruction to the delete bearer request, where the network management entity Transmitting, by the network side device, a radio access bearer setup/modification/deletion request carrying the offloading instruction, where the network side device sends an RRC connection reconfiguration message carrying the offloading instruction to the UE, where the UE is configured according to The offloading command is connected to the WIFI network, and the WIFI network establishes a transmission channel with the data gateway. In this embodiment, before the data gateway sends the offloading command to the user equipment UE, the data gateway may further include:

The data gateway receives the bearer resource command sent by the serving gateway, where the bearer resource command is triggered by a non-access stratum NAS message that is sent by the UE and is requested to be modified by the bearer resource.

When the UE is in an active state, the UE sends a bearer resource modification request to the network management entity, the network management entity sends a bearer resource command to the serving gateway, and the service gateway sends a bearer resource command to the data gateway, where the data gateway sends the service to the network management entity. / Modify/delete the bearer request, and the create/modify/delete bearer request carries the offloading instruction. The network management entity sends an E-RAB setup/modify/delete request/bearer management request to the network side device, where the E-RAB setup/modify/delete request/bearer management request carries a split instruction, and the network side device sends an RRC connection to the UE. The reconfiguration message carries the offloading instruction in the RRC connection reconfiguration message. The UE may determine whether to accept the WIFI offload according to its own power or the preset policy or the result of the scan. If accepted, the UE accesses the WIFI network. The WIFI network establishes a transmission channel with the data gateway through the AAA server or HSS. When the downlink data of the UE reaches the data gateway, the data gateway sends the downlink data to the UE through the WIFI network, and the UE sends the uplink data to the data gateway through the WIFI network.

FIG. 9 is a signaling diagram of a sixth data offloading method according to an embodiment of the present invention. Referring to FIG. 9, the LTE communication system is taken as an example, and the processing flow when the UE is activated and the UE triggers the tampering for 7 years is described in detail.

Step 1: The UE sends a bearer resource modification request to the MME.

Step 2: The MME sends a bearer resource command to the S-GW.

Step 3: The S-GW sends a bearer resource command to the P-GW.

Step 4: The P-GW sends a create/modify/delete bearer request to the S-GW, where the create/modify/delete bearer request carries a WIFI Offload Request;

Step 5: The S-GW sends a create/modify/delete bearer request to the MME, where the create/modify/delete bearer request carries a WIFI Offload Request.

Step 6: The MME sends an E-RAB establishment/modification/deletion request/bearer management request to the eNB, where the E-RAB establishment/modification/deletion request carries a WIFI Offload Request;

Step 7: The eNB sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration request carries a WIFI Offload Request.

Step 8, the UE determines whether to accept the WIFI offload, if yes, then step 9; Step 9. The UE performs authentication association and accesses the WIFI network.

Step 10: The UE sends an RRC connection reconfiguration complete message to the eNB, where the RRC connection reconfiguration complete message carries a WIFI Offload Response;

Step 11. The eNB sends an E-RAB setup/modify/delete response to the MME.

Step 12: The UE sends a bearer management response to the MME by using the eNB.

Step 13. The MME sends a create/update/delete bearer response to the S-GW.

Step 14. The S-GW sends a create/update/delete bearer response to the P-GW.

Step 15. The WIFI network establishes a transmission channel with the P-GW through the AAA server.

Step 16: When the downlink data of the UE reaches the P-GW, the P-GW sends the downlink data to the UE through the WIFI network, and the UE sends the uplink data to the P-GW through the WIFI network.

In this embodiment, before the data gateway transmits data to the UE through the WIFI network, the data gateway may further include:

The data gateway receives a create/update/delete bearer response sent by the serving gateway and carrying the WIFI offload decision.

FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 10, the user equipment 81 provided in this embodiment may implement various steps in the embodiment shown in FIG. 1, and details are not described herein again. The user equipment UE81 provided in this embodiment specifically includes a first receiving unit 11 and a first data transmission unit 12. The first receiving unit 11 is configured to receive the offloading command sent by the network side device 82, where the offloading command is a radio resource control RRC message. The first data transmission unit 12 is configured to access the WIFI network 84 for data transmission.

The user equipment UE81 provided by the embodiment receives the shunting command sent by the network side device 82, and the first data transmission unit 12 accesses the WIFI network 84 for data transmission. The UE 81 selects the WIFI network access according to the received shunting instruction, and implements service data offloading. Moreover, the UE 81 can turn off the WIFI module by default, and then open the WIFI module at the request of the network side device 82 device, thereby saving energy consumption.

FIG. 11 is a schematic structural diagram of another user equipment according to an embodiment of the present invention. As shown in FIG. 11, in the embodiment, the UE 81 is in an idle state, and the first receiving unit 11 is further configured to receive an RRC paging message sent by the network side device 82, where RRC paging The shunting instruction is carried in the interest.

In this embodiment, the UE 81 is in an idle state, and the user equipment UE81 may further include a first sending unit 13 , where the first sending unit 13 is configured to send a second RRC connection request message to the network side device 82. Correspondingly, the first receiving unit 11 is further configured to receive an RRC connection setup message sent by the network side device 82, where the RRC connection setup message carries the offloading instruction.

In this embodiment, the UE 81 is in an active state, and the first receiving unit 11 is further configured to receive an RRC connection reconfiguration message sent by the network side device 82, where the RRC connection reconfiguration message is The shunting instruction is carried in the middle.

In this embodiment, the user equipment UE81 may further include a second sending unit 14, where the second sending unit 14 is configured to send a bearer resource modification request to the network management entity 85.

In this embodiment, the user equipment may further include a determining unit 15, and the determining unit 15 is configured to determine whether to accept the WIFI offload, and if accepted, access the WIFI network 84.

In this embodiment, the first data transmission unit 12 is further configured to send, to the network side device 82, an RRC message carrying a WIFI offload decision, or send the WIFI network 84 to the network side device 82. Carrying management messages that accept WIFI shunt decisions.

FIG. 12 is a schematic structural diagram of a network side device according to an embodiment of the present invention. As shown in FIG. 12, the network side device 82 provided in this embodiment may implement various steps in the embodiment shown in FIG. 6, and details are not described herein again. The network side device 82 provided in this embodiment may be an eNB or an RRC or the like. The network side device 82 provided in this embodiment specifically includes a third sending unit 21 and a second data transmitting unit 22. The third sending unit 21 is configured to send a offloading instruction to the user equipment UE81, where the offloading instruction is a radio resource control RRC message. The second data transmission unit 22 is configured to perform data transmission between the network side device and the UE 81 through the WIFI network 84.

In the network side device 82 provided by this embodiment, the third sending unit 21 sends a splitting instruction to the UE 81, and the network side device of the second data transmitting unit 22 performs data transmission with the UE 81 through the WIFI network 84. The network side device 82 serves as a branching node, and the UE 81 selects the WIFI network access according to the received shunting instruction, and implements service data offloading. Moreover, the UE 81 can turn off the WIFI module by default, and then open the WIFI module at the request of the network side device 82 device, thereby saving energy consumption.

FIG. 13 is a schematic structural diagram of another network side device according to an embodiment of the present invention. As shown in FIG. 13, in this embodiment, the network side device 82 may further include a second receiving unit 23, and a second The receiving unit 23 is configured to receive a paging request sent by the network management entity 85. Correspondingly, the third sending unit 21 is further configured to determine whether to request the offloading, and if yes, send an RRC paging message to the UE 81, where the RRC paging message carries the offloading instruction.

In this embodiment, the network side device 82 further includes a third receiving unit 24, where the third receiving unit 24 is configured to receive the first RRC connection request message sent by the UE81. Correspondingly, the third sending unit 21 is further configured to determine whether to request the offloading, and if yes, send an RRC connection setup message to the UE 81, where the RRC connection setup message carries the offloading instruction.

In this embodiment, the UE 81 is in an active state, and the network side device 82 further includes a data receiving unit 25, and the data receiving unit 25 is configured to receive downlink data sent by the data gateway 83. The third sending unit 21 is further configured to determine whether to request the offloading, and if yes, send an RRC connection reconfiguration message to the UE 81, where the RRC connection reconfiguration message carries the offloading instruction.

In this embodiment, the network side device 82 further includes a fourth receiving unit 26, and the fourth receiving unit 26 is configured to receive a radio access bearer setup/modification/delete request sent by the network management entity 85. The third sending unit 21 is further configured to determine, according to the radio access bearer setup/modify/delete request, whether to request offloading, and if yes, send an RRC connection reconfiguration message to the UE 81, where the RRC connection reconfiguration The message carries the shunt instruction.

In this embodiment, the second data transmission unit 22 may be further configured to receive, by the UE 81, an RRC message that carries a WIFI offload decision, or receive the received WIFI by the UE 81 by using the WIFI network 84. The management message of the split decision determines to perform data transmission with the UE 81 through the WIFI network 84 according to the accepted WIFI split request.

FIG. 14 is a schematic structural diagram of a data gateway according to an embodiment of the present invention. As shown in FIG. 14, the data gateway 83 provided in this embodiment can implement various steps of the embodiment shown in FIG. 7, and details are not described herein again. The data gateway 83 provided in this embodiment specifically includes a fourth transmitting unit 31 and a third data transmitting unit 32. The fourth sending unit 31 is configured to send the offloading instruction to the user equipment UE81, so that the UE 81 accesses the WIFI network 84 according to the offloading instruction, and the WIFI network 84 establishes a transmission channel with the data gateway 83. The third data transmission unit 32 is configured to perform data transmission with the UE 81 through the WIFI network 84.

The data gateway 83 and the fourth sending unit 31 provided in this embodiment send the offloading instruction to the user equipment UE81, so that the UE 81 accesses the WIFI network 84 according to the offloading instruction, and the WIFI network 84 establishes a transmission channel with the data gateway 83, and the third Data transmission unit 32 passes through WIFI network 84 and UE 81 Data transfer. The data gateway 83 serves as a branching node, and the UE 81 selects a WIFI network access according to the received shunting instruction, and implements service data offloading. Moreover, the UE 81 can turn off the WIFI module by default, and then open the WIFI module at the request of the network side device 82 device, thereby saving energy consumption.

FIG. 15 is a schematic structural diagram of another data gateway according to an embodiment of the present invention. As shown in FIG. 15, in the embodiment, the fourth sending unit 31 is further configured to: when the downlink data of the UE 81 arrives, instruct the serving gateway 86 to perform WIFI offloading, so that the serving gateway 86 manages to the network. The entity 85 sends a downlink data notification carrying the offloading instruction, and the network management entity 85 sends a paging request carrying the offloading instruction to the network side device 82, where the network side device 82 sends the carried The RRC paging message of the offloading command, the UE 81 accesses the WIFI network 84 according to the offloading instruction, and the WIFI network 84 establishes a transmission channel with the data gateway 83. The third data transmission unit 32 is further configured to send the downlink data to the UE 81 through the WIFI network 84.

In this embodiment, the fourth sending unit 31 is further configured to send a create/modify/delete bearer request carrying the offloading instruction to the serving gateway 86, so that the serving gateway 86 is directed to the network. The management entity 85 sends the create/modify/delete bearer request, and the network management entity 85 sends a radio access bearer setup/modify/delete request carrying the offloading instruction to the network side device 82, where the network side device 82 The RRC connection reconfiguration message carrying the offloading instruction is sent to the UE 81, and the UE 81 accesses the WIFI network 84 according to the offloading instruction, and the WIFI network 84 establishes a transmission channel with the data gateway 83.

In this embodiment, the data gateway 83 may further include a fifth receiving unit 33, where the fifth receiving unit 33 is configured to receive a bearer resource command sent by the serving gateway 86, where the bearer resource command is sent by the UE81. The non-access stratum NAS message triggered by the request carrying resource modification is triggered.

In this embodiment, the data gateway 83 may further include a sixth receiving unit 34, and the sixth receiving unit 34 is configured to receive a create/update/delete bearer response sent by the serving gateway 86 that carries the accepted WIFI offload decision.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting thereof; although the present invention has been described in detail with reference to the foregoing embodiments, It should be understood that: the technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the essence of the corresponding technical solutions. The scope of the technical solution.

Claims

claims

1. A data offloading method, characterized by including:

The user equipment UE receives the offload instruction sent by the network side device, where the offload instruction is a radio resource control RRC message;

The UE accesses the WIFI network for data transmission.

2. The data offloading method according to claim 1, characterized in that:

The UE is in idle state;

Correspondingly, the user equipment UE receiving the offload instruction sent by the network side device includes: the UE receiving the RRC paging message sent by the network side device, wherein the RRC paging message carries the offload instruction. .

3. The data offloading method according to claim 1, characterized in that: the UE is in an idle state; before the user equipment UE receives the offloading instruction sent by the network side device, the method further includes: the UE transmits the offloading instruction to the network side. The device sends an RRC connection request message;

Correspondingly, the user equipment UE receives the offload instruction sent by the network side device, including: the UE receives the RRC connection establishment message sent by the network side device, wherein, the

The offload instruction is carried in the RRC connection establishment message.

4. The data offloading method according to claim 1, characterized in that:

The UE is in an active state;

Correspondingly, the user equipment UE receives the offload instruction sent by the network side device, including: the UE receives the RRC connection reconfiguration message sent by the network side device, wherein, the

The offload instruction is carried in the RRC connection reconfiguration message.

5. The data offloading method according to claim 4, characterized in that, before the UE receives the RRC connection reconfiguration message, it further includes:

6. The data offloading method according to claim 5, characterized in that:

The network side device is a base station eNB, and the network management entity is a mobility management entity

7. The data offloading method according to claim 1, characterized in that, before the UE accesses the WIFI network for data transmission, it further includes:

The UE determines whether to accept the offload instruction, and if so, accesses the WIFI network.

8. The data offloading method according to any one of claims 1 to 7, characterized in that the UE accesses the WIFI network for data transmission, including:

The UE sends an RRC message carrying the WIFI offloading decision to the network side device, or sends a management message carrying the WIFI offloading decision to the network side device through the WIFI network.

9. A data offloading method, characterized by including:

The network side device sends an offload instruction to the user equipment UE, where the offload instruction is a radio resource control RRC message;

The network side device performs data transmission with the UE through the WIFI network.

10. The data offloading method according to claim 9, characterized in that: the UE is in an idle state; before the network side device sends the offloading instruction to the user equipment UE, it further includes: the network side device receives a network management entity The paging request sent;

Correspondingly, the network side device sends an offloading instruction to the user equipment UE, including: the network side device determines whether to request offloading, and if so, sends an RRC paging message to the UE, wherein, in the RRC paging message Carrying the diversion instructions.

11. The data offloading method according to claim 9, characterized in that: the UE is in an idle state;

Before the network side device sends the offload instruction to the user equipment UE, it also includes:

The network side device receives the RRC connection request message sent by the UE;

Correspondingly, the network side device sends an offloading instruction to the user equipment UE, including: the network side device determines whether to request offloading, and if so, sends an RRC connection establishment message to the UE, wherein, in the RRC connection establishment message Carrying the diversion instructions.

12. The data offloading method according to claim 9, characterized in that: the UE is in an activated state; before the network side device sends the offloading instruction to the user equipment UE, it further includes: the network side device receives the data Downlink data sent by the gateway;

The network side device sends an offload instruction to the user equipment UE, including:

The network side device determines whether to request offloading, and if so, sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration message carries the offloading instruction.

13. The data offloading method according to claim 9, characterized in that: the UE is in an activated state; before the network side device sends the offloading instruction to the user equipment UE, it further includes: The network side device receives the radio access bearer establishment/modification/deletion request sent by the network management entity;

The network side device determines whether to request offloading according to the radio access bearer establishment/modification/deletion request. If so, then sends an RRC connection reconfiguration message to the UE, wherein the RRC connection reconfiguration message carries Describe the diversion instructions.

14. The data offloading method according to claim 9, characterized in that:

15. The data offloading method according to any one of claims 9-15, characterized in that the network side device performs data transmission with the UE through the WIFI network, including:

The network side device receives the RRC message carrying the WIFI offload acceptance decision sent by the UE, or receives the management message carrying the WIFI offload acceptance decision sent by the UE through the WIFI network, and passes the WIFI offload acceptance decision according to the WIFI offload acceptance decision. The WIFI network performs data transmission with the UE.

16. A data offloading method, characterized by including:

The data gateway issues the offload instruction to the user equipment UE, so that the UE accesses the WIFI network according to the offload instruction, and the WIFI network establishes a transmission channel with the data gateway;

The data gateway performs data transmission with the UE through the WIFI network.

17. The data offloading method according to claim 16, characterized in that:

The data gateway issues offload instructions to the user equipment UE, including:

When the downlink data of the UE arrives, the data gateway instructs the serving gateway to perform WIFI offloading, so that the serving gateway sends a downlink data notification carrying the offloading instruction to the network management entity, and the network management entity sends the offloading instruction to the network The side device sends a paging request carrying the offload instruction, the network side device sends an RRC paging message carrying the offload instruction to the UE, and the UE accesses the WIFI network according to the offload instruction, so The WIFI network establishes a transmission channel with the data gateway;

The data gateway performs data transmission with the UE through the WIFI network, including: the data gateway sends the downlink data to the UE through the WIFI network.

18. The data offloading method according to claim 16, characterized in that: The UE is in an active state;

Correspondingly, the data gateway issues offload instructions to the user equipment UE, including:

The data gateway sends a create/update/delete bearer request carrying the offload instruction to a delete bearer request, and the network management entity sends a radio access bearer establishment/modification/carrying the offload instruction to the network side device. Delete request, the network side device sends an RRC connection reconfiguration message carrying the offload instruction to the UE, the UE accesses the WIFI network according to the offload instruction, the WIFI network establishes a connection with the data gateway transmission channel.

19. The data offloading method according to claim 18, characterized in that:

Before the data gateway issues the offload instruction to the user equipment UE, it also includes:

The data gateway receives a bearer resource command sent by the serving gateway, wherein the bearer resource command is triggered by a non-access stratum NAS message sent by the UE requesting bearer resource modification.

20. The data offloading method according to any one of claims 16 to 19, characterized in that, before the data gateway performs data transmission with the UE through the WIFI network, it also includes:

The data gateway receives the create/update/delete bearer response sent by the service gateway and carries the decision to accept the WIFI offload.

21. A user equipment, characterized by: including:

The first receiving unit is configured to receive an offload instruction sent by the network side device, where the offload instruction is a radio resource control RRC message;

The first data transmission unit is used to access the WIFI network for data transmission.

22. The user equipment according to claim 21, characterized in that:

The UE is in idle state;

Correspondingly, the first receiving unit is further configured to receive an RRC paging message sent by the network side device, wherein the RRC paging message carries the offload instruction.

23. The user equipment according to claim 21, characterized in that: the UE is in an idle state; the user equipment further includes:

The first sending unit is configured to send an RRC connection request message to the network side device; accordingly, the first receiving unit is also configured to receive an RRC connection establishment message sent by the network side device, wherein, the RRC connection The establishment message carries the offloading instruction.

24. The user equipment according to claim 21, characterized in that: The UE is in an active state;

Correspondingly, the first receiving unit is further configured to receive an RRC connection reconfiguration message sent by the network side device, wherein the RRC connection reconfiguration message carries the offload instruction.

25. The user equipment according to claim 24, further comprising: a second sending unit, configured to send a bearer resource modification request to the network management entity.

26. The user equipment according to claim 21, further comprising:

The judgment unit is used to judge whether to accept the WIFI offloading. If accepted, access the WIFI network.

27. The user equipment according to any one of claims 21-26, characterized in that:

The first data transmission unit is also configured to send an RRC message carrying the WIFI offloading decision to the network side device, or send a management message carrying the WIFI offloading decision to the network side device through the WIFI network.

28. A network side device, characterized by including:

The third sending unit is configured to send an offload instruction to the user equipment UE, where the offload instruction is a radio resource control RRC message;

The second data transmission unit is used for data transmission with the UE through the WIFI network.

29. The network side device according to claim 28, further comprising: a second receiving unit, configured to receive the paging request sent by the network management entity;

Correspondingly, the third sending unit is also configured to determine whether offloading is requested, and if so, send an RRC paging message to the UE, wherein the RRC paging message carries the offloading instruction.

30. The network side device according to claim 28, further comprising: a third receiving unit, configured to receive the RRC connection request message sent by the UE;

Correspondingly, the third sending unit is also configured to determine whether offloading is requested, and if so, send an RRC connection establishment message to the UE, where the RRC connection establishment message carries the offloading instruction.

31. The network side device according to claim 28, characterized in that: the UE is in an activated state;

The network side equipment also includes:

A data receiving unit, configured to receive downlink data sent by the data gateway;

The third sending unit is also used to determine whether to request offloading, and if so, send an RRC connection reconfiguration message to the UE, wherein the RRC connection reconfiguration message carries the offloading message. instructions.

32. The network side device according to claim 28, characterized in that:

The network side equipment also includes:

The fourth receiving unit is configured to receive the radio access bearer establishment/modification/deletion request sent by the network management entity;

The third sending unit is also configured to determine whether to request offloading according to the radio access bearer establishment/modification/deletion request, and if so, send an RRC connection reconfiguration message to the UE, wherein, the RRC connection reconfiguration message carries the diversion instruction.

33. The network side device according to any one of claims 28 to 32, characterized in that: the second data transmission unit is also used to receive an RRC message sent by the UE carrying the decision to accept the WIFI offload, or to receive the The UE sends a management message carrying the WIFI offloading decision accepted through the WIFI network, and performs data transmission with the UE through the WIFI network according to the WIFI offloading decision accepted.

34. A data gateway, characterized by including:

The fourth sending unit is used to issue the offload instruction to the user equipment UE, so that the UE accesses the WIFI network according to the offload instruction, and the WIFI network establishes a transmission channel with the data gateway;

35. The data gateway according to claim 34, characterized in that:

The fourth sending unit is also configured to instruct the serving gateway to perform WIFI offloading when the downlink data of the UE arrives, so that the serving gateway sends a downlink data notification carrying the offloading instruction to the network management entity, The network management entity sends a paging request carrying the offload instruction to the network side device. The network side device sends an RRC paging message carrying the offload instruction to the UE. The UE receives the offload instruction according to the offload instruction. Enter the WIFI network, and the WIFI network establishes a transmission channel with the data gateway;

The third data transmission unit is also used to send the downlink data to the UE through the WIFI network.

36. The data gateway according to claim 34, characterized in that: the UE is in an activated state;

The fourth sending unit is also configured to bear the creation/modification/deletion carrying the offloading instruction. The request is sent to the serving gateway, so that the serving gateway sends the create/modify/delete bearer request to the network management entity, and the network management entity sends a wireless access link carrying the offload instruction to the network side device. Input a bearer establishment/modification/deletion request, the network side device sends an RRC connection reconfiguration message carrying the offload instruction to the UE, the UE accesses the WIFI network according to the offload instruction, the WIFI network is established Transmission channel with the data gateway.

37. The data gateway according to claim 36, further comprising: a fifth receiving unit, configured to receive a bearer resource command sent by the serving gateway, wherein the bearer resource command is sent by the UE. Triggered by a non-access layer NAS message requesting bearer resource modification.

38. The data gateway according to any one of claims 34 to 37, further comprising: a sixth receiving unit, configured to receive a creation/update/deletion message sent by the service gateway carrying a decision to accept WIFI offloading. response.