WO2016082475A1

WO2016082475A1 - Network handover method, network system, and storage medium

Info

Publication number: WO2016082475A1
Application number: PCT/CN2015/078762
Authority: WO
Inventors: 朱亚兵; 刘其锋; 曲海龙; 井惟栋
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-11-26
Filing date: 2015-05-12
Publication date: 2016-06-02
Also published as: CN105704764A

Abstract

The present invention provides a network handover method, a network system, and a storage medium. The method comprises: a mobility management entity (MME) in an E-UTRAN receives a connection request, sent by a terminal, for connection to an evolved high rate packet data (eHRPD) network; the MME sends access information comprising a bearer identifier to the eHRPD network according to the connection request, so that the eHRPD network differentiates, according to the bearer identifier, a generic routing encapsulation key (GREKey) corresponding to an uplink packet; and the MME hands over the terminal to the evolved high rate packet data (eHRPD) network according to the bearer identifier.

Description

Network switching method, network system and storage medium

Technical field

The present invention relates to the field of communication, in particular to a network switching method, a network system, and a storage medium.

Background technique

In recent years, with the rapid development of mobile communication technology and people’s increasing requirements for high-speed data services, high-speed packet data (HRPD) networks are constantly evolving. In order to achieve interoperability with Enhanced Universal Terrestrial Radio Access Network (E-UTRAN), HRPD has evolved into Evolved High Rate Packet Data (eHRPD).

Figure 1 is a schematic diagram of the interoperability architecture between eHRPD and E-UTRAN. As shown in Figure 1, the eHRPD network is composed of the following network elements: Evolved Access Network (eAN) and Evolved Packet Control Function (Evolved Packet Control Function, referred to as ePCF), High Speed Packet Data Service Gateway (HRPD Serving Gateway, referred to as HSGW), etc.; among them, the E-UTRAN network consists of the following network elements: Mobility Management Entity It is MME), Packet Data Network Gateway (PGW for short), Serving Gateway (SGW for short), E-TURAN base station, etc.

eHRPD has enhanced the functions of the original HRPD wireless and packet core network. eHRPD also brings a series of new features, such as multiple PDN support, bearer multiplexing, QoS initiated on the network side, MUPSAP (Multiple PDN Connections to A Single APN, multiple public data network (PDN) connected to one access point (APN)) Wait.

In the eHRPD network, the MUPSAP function allows user equipment (User Equipment, 简 To Called UE) to establish multiple PDN connections to one APN, each PDN connection uses PDN-ID (PDN Identifier) + User Context Identifier (User Context Identifier) to uniquely identify; but under the current several network elements, P-GW knows APN does not know the user context identification, MME only knows the APN, P-GW address, Generic Routing Encapsulation Key (GREKey), and does not know the user context identification information, and the HSGW sends it in the S101 tunnel After the data, only the APN, P-GW address, and GREKey are known, but for the MUPSAP scenario, it is impossible to determine which GREKey corresponds to the uplink packet, and the uplink packet cannot be forwarded in time, resulting in interruption of the uplink packet.

In the current technology, in the optimized handover process when the user is active, the downlink data can be sent using the S103 tunnel, which will not cause the mid-end, but the uplink data must wait until the UE accesses the network through eHRPD before being sent, causing the uplink data to be interrupted. . Because before that, for the MUPSAP scenario, using the APN would find the GREKey of multiple P-GWs, and it was impossible to distinguish which one should be used.

Summary of the invention

In order to solve the existing technical problems, embodiments of the present invention provide a network switching method, a network system, and a storage medium.

The embodiment of the present invention provides a network handover method, which is applied to the enhanced universal terrestrial radio access network E-UTRAN, including:

The mobility management entity MME in the E-UTRAN receives a connection request sent by the terminal to connect to the evolved high-speed packet data network eHRPD;

The MME sends the access information including the bearer identifier to the eHRPD according to the connection request, so that the eHRPD distinguishes the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier, and according to the bearer identifier The terminal is switched to the evolved high-speed packet data network eHRPD.

Wherein, the access information further includes one or more of the following: access point information, number of packets To Data network gateway P-GW address, general routing encapsulation key GREKey information.

Wherein, the step of sending the access information including the bearer identifier to the eHRPD includes:

The access information including the bearer identifier is sent to the eHRPD evolved access network eAN/evolved packet control function ePCF through the S101 tunnel.

An embodiment of the present invention also provides a storage medium, the storage medium including a set of instructions, when the instructions are executed, cause at least one processor to perform the foregoing operations.

The embodiment of the present invention also provides a network handover method, which is applied to the evolved high-speed packet data network eHRPD, including:

The eHRPD receives a connection request sent by the mobility management entity MME in the enhanced universal terrestrial radio access network E-UTRAN to connect the terminal to the evolved high-speed packet data network eHRPD; the connection request carries access information including a bearer identifier;

The eHRPD distinguishes the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier;

The eHRPD switches the terminal to the evolved high-speed packet data network eHRPD according to the bearer identifier.

Wherein, the access information further includes one or more of the following: access point information, packet data network gateway P-GW address, general routing encapsulation keyword GREKey information.

Wherein, the eHRPD receiving access information including a bearer identifier includes:

The eHRPD evolved access network eAN/evolved packet control function ePCF receives the access information including the bearer identifier through the S101 tunnel.

Wherein, the step of the eHRPD distinguishing the GREKey corresponding to the uplink packet according to the bearer identifier includes:

The eAN/ePCF sends a registration request to the HSGW of eHRPD's high-speed packet data service gateway; wherein the registration request includes the received access point information, the packet data network gateway P-GW address, the general routing encapsulation key GREKey information, and the bearer Logo To

When the HSGW in eHRPD receives the uplink data of the terminal, it finds the corresponding access point information according to the identifier of the public data network PDN of the uplink data, and finds the corresponding bearer identifier according to the user context identifier, and then finds the corresponding bearer identifier according to the access point information and bearer Identify the corresponding packet data network gateway and GREKey.

Among them, after eAN/ePCF sends a registration request to eHRPD's high-speed packet data service gateway HSGW, it also includes:

The eAN/ePCF receives the registration response returned by the HSGW to the eAN/ePCF, where the registration response contains the S103 tunnel address, GREKey information and associated access point information, and returns the information contained in the registration response to E-UTRAN , And the service gateway SGW in the E-UTRAN creates an S103 tunnel, and transmits the uplink and downlink data between the E-UTRAN network and the eHRPD network through the S103 tunnel.

Wherein, the step of switching the terminal to the evolved high-speed packet data network eHRPD according to the bearer identifier includes:

After the terminal switches the eHRPD wireless environment, the eAN/ePCF sends a message to the HSGW to indicate activation and handover. For each PDN connection, the HSGW sends a message to establish a transmission tunnel to the P-GW in the E-UTRAN and informs the terminal to use the transmission tunnel Access eHRPD.

Correspondingly, an embodiment of the present invention also provides a storage medium, the storage medium includes a set of instructions, and when the instructions are executed, at least one processor is caused to perform the foregoing operations.

The embodiment of the present invention also provides a network system, including:

The mobility management entity MME is configured to receive a connection request sent by the terminal to connect to the evolved high-speed packet data network eHRPD; and according to the connection request, send the access information including the bearer identifier to the eHRPD, so that the eHRPD is based on the The bearer identifier distinguishes the general routing encapsulation key GREKey corresponding to the uplink packet; and the terminal is switched to the evolved high-speed packet data network eHRPD according to the bearer identifier.

The embodiment of the present invention also provides a network system, including: To

The evolved access network eAN/evolved packet control function ePCF is configured to receive a connection request sent by the mobility management entity MME in the enhanced universal terrestrial radio access network E-UTRAN to connect the terminal to the evolved high-speed packet data network eHRPD; The connection request carries the access information including the bearer identifier;

The high-speed packet data service gateway HSGW is configured to distinguish the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier; and switch the terminal to the evolved high-speed packet data network eHRPD according to the bearer identifier.

The mobility management entity MME is configured to receive a connection request sent by the terminal to connect to the evolved high-speed packet data network eHRPD; and according to the connection request, send the access information including the bearer identifier to the eHRPD;

eHRPD evolved access network eAN/evolved packet control function ePCF, configured to receive a connection request sent by the mobility management entity MME in the enhanced universal terrestrial radio access network E-UTRAN to connect the terminal to the evolved high-speed packet data network eHRPD;

The high-speed packet data service gateway HSGW of the eHRPD is configured to distinguish the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier; and switch the terminal to the evolved high-speed packet data network eHRPD according to the bearer identifier.

The beneficial effects of the above technical solutions of the embodiments of the present invention are as follows:

The above technical solution of the embodiment of the present invention sends the access information including the bearer identifier to the eHRPD, so that the eHRPD distinguishes the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier; The terminal switches to the evolved high-speed packet data network eHRPD; realizes the transmission of uplink data through the S103 tunnel, thereby solving the problem of uplink data interruption.

Description of the drawings

In the drawings (which are not necessarily drawn to scale), similar reference signs may be used in different To Similar parts are described in the view. Similar reference numerals with different letter suffixes may indicate different examples of similar components. The accompanying drawings generally show the various embodiments discussed herein by way of example and not limitation.

Figure 1 shows a schematic diagram of the interoperability architecture between eHRPD and E-UTRAN;

Fig. 2 shows a flow chart of optimized handover in the active state of the UE in the prior art;

Fig. 3 shows a network handover flowchart of an E-UTRAN network according to an embodiment of the present invention;

Figure 4 shows a network handover flowchart of an eHRPDUE network according to an embodiment of the present invention;

FIG. 5 shows a flowchart of optimized handover of a terminal in an active state according to an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

For ease of understanding, first, the optimized handover process under the current user active state is described, as shown in Figure 2, which includes the following steps:

1a. The UE (terminal) is ready to switch to eHRPD;

1b. The UE sends an HRPD Connection Request (HRPD connection request) to the MME (mobility management entity);

1c. The MME sends APN, P-GW address, and GREKey information to eHRPD through the S101 tunnel;

2a. eHRPD eAN/ePCF sends A11 registration request (RRQ) to HSGW, which contains the APN, P-GW address, GREKey information, etc. received from the S101 tunnel;

2b. HSGW returns A11 registration response (RRP) to eAN/ePCF, which contains S103 tunnel address, GREKey, associated APN information, etc.;

3. The eHRPD eAN/ePCF responds to the MME through the S101 tunnel;

4a. The MME notifies the SGW to create an S103 tunnel;

4b. The MME sends an HRPD TCA message to notify the UE; To

5. The SGW sends downlink data through the S103 tunnel;

6a. The UE obtains the eHRPD radio (the UE switches to the eHRPD environment);

6b. The UE sends a TCC message to eHRPD eAN/ePCF;

7a. eHRPD eAN/ePCF sends an A11-RRQ message to HSGW to indicate activation and handover;

7b. The HSGW returns an A11-RRP response to eHRPD eAN/ePCF;

8a. For each PDN connection, the HSGW sends a PBU to the P-GW to establish a PMIPv6 tunnel;

8b. The P-GW returns a PBA response with the same IP address to confirm that the tunnel has been successful;

8c. If necessary, P-GW and hPCRF will interact to update the IP-CAN information;

8d. eHRPD eAN/ePCF informs the MME that the handover is successful through the S101 tunnel;

9. The UE accesses the network through eHRPD;

10. E-UTRAN releases related resources.

From the above process, it can be seen that the downlink data can be sent using the S103 tunnel in step 5, which will not cause the mid-end, but the uplink data must be sent after step 9 and cause the uplink data to be interrupted.

In the MUPSAP scenario of the existing terminal, the APN will find the GREKey of multiple P-GWs, and cannot distinguish which one should be used, which leads to the problem of interruption of uplink data. The embodiment of the present invention provides a network switching method, which is applied to enhance universal The terrestrial radio access network E-UTRAN, as shown in Fig. 3, the method includes:

Step 31: The mobility management entity MME in the E-UTRAN receives a connection request sent by the terminal to connect to the evolved high-speed packet data network (eHRPD);

Step 32: The MME sends the access information including the bearer identifier to the eHRPD according to the connection request, so that the eHRPD distinguishes the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier; The bearer identifier switches the terminal to the evolved high-speed packet data network (eHRPD). To

In this embodiment, in the E-UTRAN network, the access information including the bearer identifier is sent to eHRPD, so that the eHRPD can distinguish the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier; The bearer identifier switches the terminal to the evolved high-speed packet data network eHRPD; realizes the transmission of uplink data through the S103 tunnel, thereby solving the problem of uplink data interruption.

In a specific embodiment of the present invention, the access information further includes: access point information, packet data network gateway P-GW address, and general routing encapsulation key GREKey information.

In step 31, the access information including the bearer identifier is sent to the eHRPD evolved access network eAN/evolved packet control function ePCF through the S101 tunnel.

In step 32, the step of the eHRPD distinguishing the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier includes:

The eAN/ePCF sends a registration request to the HSGW of eHRPD's high-speed packet data service gateway; wherein the registration request includes the received access point information, the packet data network gateway P-GW address, the general routing encapsulation key GREKey information, and the bearer Identification; when the HSGW receives the uplink data of the terminal, it can find the corresponding access point information according to the identification of the public data network PDN of the uplink data, and find the corresponding bearer identification according to the user context identification, and according to the access point information and The bearer identifier finds the corresponding packet data network gateway and GREKey.

Wherein, after eAN/ePCF sends a registration request to eHRPD's high-speed packet data service gateway HSGW, the method further includes:

Wherein, the terminal is switched to the evolved high-speed packet data network according to the bearer identifier To The eHRPD steps include:

Based on the above method, an embodiment of the present invention also provides a storage medium, the storage medium includes a set of instructions, when the instructions are executed, cause at least one processor to perform the operations described above.

As shown in FIG. 4, the embodiment of the present invention provides a network switch for the existing terminal in the MUPSAP scenario, and uses the APN to find the GREKey of multiple P-GWs, and cannot distinguish which one should be used, which leads to the interruption of uplink data. The method, applied to eHRPD, an evolved high-speed packet data network, includes:

Step 41: The eHRPD receives a connection request sent by the mobility management entity MME in the enhanced universal terrestrial radio access network E-UTRAN to connect the terminal to the evolved high-speed packet data network eHRPD; the connection request carries the connection request including the bearer identifier. Incoming information;

Step 42: The eHRPD distinguishes the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier;

Step 43: The eHRPD switches the terminal to the evolved high-speed packet data network eHRPD according to the bearer identifier.

In a specific embodiment, the access information further includes: access point information, packet data network gateway P-GW address, and general routing encapsulation keyword GREKey information.

Wherein, the eHRPD evolved access network eAN/evolved packet control function ePCF receives the access information including the bearer identifier through the S101 tunnel.

Wherein, the step of the eHRPD distinguishing the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier includes:

eAN/ePCF sends a registration request to eHRPD's high-speed packet data service gateway HSGW; To Wherein, the registration request includes the received access point information, the packet data network gateway P-GW address, the general routing encapsulation key GREKey information, and the bearer identifier;

After the terminal switches the eHRPD wireless environment, the eAN/ePCF sends a message to the HSGW to indicate activation and handover. For each PDN connection, the HSGW sends a message to establish a transmission tunnel to the P-GW in E-UTRAN and informs the terminal to use the transmission tunnel Access eHRPD.

As shown in Figure 5, it is the optimized handover flow chart of the above terminal handover from E-UTRAN to eHRPD in the active state, including the following steps:

1a. The UE is ready to switch to eHRPD;

1b. The UE sends an HRPD connection request to the MME; To

1c. The MME sends APN (access point), P-GW address, and GREKey information to eHRPD through the S101 tunnel, along with Bearer Identity information; as shown in the following table:

2a. eHRPD eAN/ePCF sends an A11 registration request (RRQ) to HSGW, which contains the APN, P-GW address, GREKey information, etc. received from the S101 tunnel, and also carries the Bearer Identity information (bearer identification); as shown in the following table Show:

2b. HSGW returns A11 registration response (RRP) to T-eAN/ePCF, which contains S103 tunnel address, GREKey, associated APN information, etc.;

3. The eHRPD eAN/ePCF responds to the MME through the S101 tunnel;

4a. The MME notifies the SGW to create an S103 tunnel;

4b. The MME sends an HRPD and TCA message (connection message) to notify the UE;

5. The SGW sends downlink data through the S103 tunnel. When the HSGW receives the uplink data, it can find the corresponding APN through the PDN-ID according to the information of the upstream data, and find the corresponding Bearer Identity information through the User Context Identifier (user context identifier), To In this way, the corresponding P-GW and GREKey are found according to the APN and bearer identifier, and the uplink data is sent through the S103 tunnel;

6a. The UE switches to the eHRPD wireless environment;

6b. The UE sends a TCC message (connection response) to eHRPD eAN/ePCF;

7b. The HSGW returns an A11-RRP response to eHRPD eAN/ePCF;

8a. For each PDN connection, the HSGW sends a PBU (request for recommended tunnel) to the P-GW to establish a PMIPv6 tunnel;

8b. The P-GW responds to the PBA (Response message for tunnel establishment) with the same IP address to confirm that the tunnel is successful;

9. The UE accesses the network through eHRPD;

10. E-UTRAN releases related resources.

Corresponding to the method shown in FIG. 3, an embodiment of the present invention also provides a network system, including:

It should be noted that the network system may be an E-UTRAN system, and all the embodiments of the method shown in FIG. 3 in the above process are applicable to the system, and the same technical effect can be achieved.

Evolved Access Network eAN/Evolved Packet Control Function ePCF, configured to receive enhanced universal land To A connection request sent by the mobility management entity MME in the local radio access network E-UTRAN to connect the terminal to the evolved high-speed packet data network eHRPD; the connection request carries the access information including the bearer identifier;

It should be noted that the system may be an eHRPD, and all the above-mentioned implementations of the method shown in FIG. 4 are applicable to the system, and the same technical effect can also be achieved.

In the above-mentioned embodiment of the present invention, when optimizing handoff (Active Mode Optimized Handoff Phase E-UTRAN to eHRPD) in the active state of the user, Bearer Identity information is added through the S101 tunnel. For MUPSAP users, the UE is required to use Bearer Identity as the User Context Identifier in the HSGW. Establish a PDN connection on the HSGW, so that the HSGW can distinguish the GREKey corresponding to the uplink packet, and realize the transmission of uplink data through the S103 tunnel, thereby solving the problem of uplink data interruption.

In addition, the embodiment of the present invention also provides a network system, including:

In this network system, the mobility management entity MME in the network E-UTRAN will include To The access information of the bearer identifier is sent to the eHRPD, so that the HSGW can be configured to distinguish the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier; and switch the terminal to the evolved high-speed packet according to the bearer identifier The data network eHRPD realizes the transmission of uplink data through the S103 tunnel, thereby solving the problem of uplink data interruption.

Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention may adopt the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may be in the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.

The present invention is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. Instructions are provided to implement the functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram. To Can steps.

The above are only preferred embodiments of the present invention, and are not used to limit the protection scope of the present invention. To

Claims

A network handover method applied to the enhanced universal terrestrial radio access network E-UTRAN, the method includes:

The mobility management entity MME in the E-UTRAN receives a connection request sent by the terminal to connect to the evolved high-speed packet data network eHRPD;

The MME sends the access information including the bearer identifier to the eHRPD according to the connection request, so that the eHRPD distinguishes the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier, and according to the bearer identifier The terminal is switched to the evolved high-speed packet data network eHRPD.
The network switching method according to claim 1, wherein the access information further includes one or more of the following: access point information, packet data network gateway P-GW address, general routing encapsulation keyword GREKey information.
The network handover method according to claim 2, wherein the step of sending the access information including the bearer identifier to the eHRPD comprises:

The access information including the bearer identifier is sent to the eHRPD evolved access network eAN/evolved packet control function ePCF through the S101 tunnel.
A network handover method is applied to eHRPD, an evolved high-speed packet data network, and the method includes:

The eHRPD receives a connection request sent by the mobility management entity MME in the enhanced universal terrestrial radio access network E-UTRAN to connect the terminal to the evolved high-speed packet data network eHRPD; the connection request carries access information including a bearer identifier;

The eHRPD distinguishes the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier;

The eHRPD switches the terminal to the evolved high-speed packet data network eHRPD according to the bearer identifier. To
The network switching method according to claim 4, wherein the access information further includes one or more of the following: access point information, packet data network gateway P-GW address, general routing encapsulation keyword GREKey information.
The network handover method according to claim 5, wherein the eHRPD receiving access information including a bearer identifier includes:

The eHRPD evolved access network eAN/evolved packet control function ePCF receives the access information including the bearer identifier through the S101 tunnel.
The network switching method according to claim 6, wherein the step of the eHRPD distinguishing the GREKey corresponding to the uplink packet according to the bearer identifier comprises:

eAN/ePCF sends a registration request to eHRPD's high-speed packet data service gateway HSGW; where the registration request includes the received access point information, packet data network gateway P-GW address, general routing encapsulation key GREKey information, and bearer Logo

When the HSGW in eHRPD receives the uplink data of the terminal, it finds the corresponding access point information according to the identifier of the public data network PDN of the uplink data, and finds the corresponding bearer identifier according to the user context identifier, and then finds the corresponding bearer identifier according to the access point information and bearer Identify the corresponding packet data network gateway and GREKey.
The network handover method according to claim 7, wherein after the eAN/ePCF sends a registration request to the HSGW of eHRPD, the method further comprises:

The eAN/ePCF receives the registration response returned by the HSGW to the eAN/ePCF, where the registration response contains the S103 tunnel address, GREKey information and associated access point information, and returns the information contained in the registration response to E-UTRAN , And the service gateway SGW in the E-UTRAN creates an S103 tunnel, and transmits the uplink and downlink data between the E-UTRAN network and the eHRPD network through the S103 tunnel.
The network handover method according to claim 8, wherein according to the bearer identifier, To The steps for the terminal to switch to the evolved high-speed packet data network eHRPD include:

After the terminal switches the eHRPD wireless environment, the eAN/ePCF sends a message to the HSGW to indicate activation and handover. For each PDN connection, the HSGW sends a message to establish a transmission tunnel to the P-GW in E-UTRAN and informs the terminal to use the transmission tunnel Access eHRPD.
A network system including:

The mobility management entity MME is configured to receive a connection request sent by the terminal to connect to the evolved high-speed packet data network eHRPD; and according to the connection request, send the access information including the bearer identifier to the eHRPD, so that the eHRPD is The bearer identifier distinguishes the general routing encapsulation key GREKey corresponding to the uplink packet, and switches the terminal to the evolved high-speed packet data network eHRPD according to the bearer identifier.
A network system including:

The evolved access network eAN/evolved packet control function ePCF is configured to receive a connection request sent by the mobility management entity MME in the enhanced universal terrestrial radio access network E-UTRAN to connect the terminal to the evolved high-speed packet data network eHRPD; The connection request carries the access information including the bearer identifier;

The high-speed packet data service gateway HSGW is configured to distinguish the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier; and switch the terminal to the evolved high-speed packet data network eHRPD according to the bearer identifier.
A network system including:

The mobility management entity MME is configured to receive a connection request sent by the terminal to connect to the evolved high-speed packet data network eHRPD; and according to the connection request, send the access information including the bearer identifier to the eHRPD;

eHRPD evolved access network eAN/evolved packet control function ePCF, configured to receive a connection request sent by the mobility management entity MME in the enhanced universal terrestrial radio access network E-UTRAN to connect the terminal to the evolved high-speed packet data network eHRPD; To

The high-speed packet data service gateway HSGW of the eHRPD is configured to distinguish the general routing encapsulation key GREKey corresponding to the uplink packet according to the bearer identifier; and switch the terminal to the evolved high-speed packet data network eHRPD according to the bearer identifier.
A storage medium comprising a set of instructions, which when executed, cause at least one processor to perform the operation described in any one of claims 1-3.
A storage medium comprising a set of instructions, which when executed, cause at least one processor to perform the operation described in any one of claims 4-9. To