WO2014161342A1

WO2014161342A1 - Mobile terminal and method and apparatus for implementing single pdp dual stack connection for same

Info

Publication number: WO2014161342A1
Application number: PCT/CN2013/088495
Authority: WO
Inventors: 郑巍; 温海龙; 张红
Original assignee: 中兴通讯股份有限公司
Priority date: 2013-07-22
Filing date: 2013-12-04
Publication date: 2014-10-09
Also published as: CN104333608A; CN104333608B

Abstract

The present invention provides a mobile terminal and a method and an apparatus for implementing a single Packet Data Protocol (PDP) dual stack connection for the mobile terminal, and belongs to the field of mobile communications. The method comprises: a conversion step: acquiring a first PDP activation request message to be sent by a mobile terminal, and converting the first PDP activation request message into a second PDP activation request message, a PDP type of the second PDP activation request message being Internet Protocol Version 4 (IPv4) or Internet Protocol Version 6 (IPv6); a sending step: sending the second PDP activation request message to a network side; a parsing step: parsing a PDP activation response message returned by the network side, and acquiring IP address information and domain name system (DNS) address information required to establish a connection; and an address allocation step: allocating the IP address information and the DNS address information to a host, so as to establish a connection between the host and the network side.

Description

Method and device for implementing mobile terminal and single PDP dual stack connection thereof

The present invention relates to the field of mobile communications, and in particular, to a mobile terminal and a method and apparatus for implementing a single PDP dual stack connection. Background technique

IPv6 (Internet Protocol Version 6, Internet Protocol Version 6) has a large address space, an address structure for address aggregation, automatic address configuration, and host mobility. Its security and quality of service are better than IPv4 (Internet Protocol Version 4, Internet Protocol). Version 4) and many other advantages. Whether it is UMTS (Universal Mobile Telecommunications System) of 3GPP (The 3rd Generation Partnership Project, 3rd generation partner), or CDMA2000 (Code Division Multiple Access 2000) of 3GPP2 (Code Division Multiple Access 2000) The system has already determined that IPv6 is the development direction of network-side bearers and service applications. Especially in the 3G IMS (IP Multimedia Subsystem, IP Multimedia System) phase, the network side system will be fully based or compatible with IPv6, and IPv6 has become the common basic protocol for Internet and mobile communication networks.

When the mobile terminal establishes a connection, the wireless communication protocol stack sends a PDP (Packet Data Protocol) context activation request message to the network side to obtain the IP address and DNS (Domain Name System) required for connection establishment. Address and other related configuration information. The early mobile terminal only supports IPv4, so the mobile terminal can only send the IPv4 PDP activation request message to the network side, obtain the IPv4 IP address and DNS address, and establish an IPv4 link. Then, with the development of the IPv6 technology, the mobile terminal introduces the IPv6 function, and then the mobile terminal can also send the IPv6 PDP activation request message to the network side, obtain the IPv6 IP address and the DNS address, and establish an IPv6 link. But before the Rel8 version of the 3GPP protocol, mobile terminals can only support A PDP context carries a link of an IP type. When the mobile terminal establishes a dual-stack connection, it needs to send two PDP activation request messages at the same time. The PDP type of one activation request message is IPv4, and the PDP type of the other activation request message is IPv6. After the activation is successful, the data transmission of the two IP types needs to be carried on the corresponding PDP context. The 3GPP protocol introduces the concept of a single PDP dual stack in the Rel8 version. A PDP context can carry both IPv4 and IPv6 links. However, early mobile terminals can only support dual PDP dual stacks, that is, IPv4 links and IPv6 links require two independent PDP contexts to carry, which causes early mobile terminals to fail to establish single PDP pairs under the network side after Rel8. Stack connection. Summary of the invention

The embodiment of the invention provides a method and a device for implementing a mobile terminal and a single PDP dual-stack connection, which enables the mobile terminal to establish a single PDP dual-stack connection under the network side after Rel8.

In order to solve the above technical problem, the embodiments of the present invention provide the following technical solutions:

In one aspect, a method for implementing a single PDP dual stack connection of a mobile terminal includes: converting step: acquiring a first PDP activation request message to be sent by the mobile terminal, and converting the first PDP activation request message into a second PDP The activation request message, the PDP type of the second PDP activation request message is IPv4v6;

Sending step: sending the second PDP activation request message to the network side;

The parsing step is: parsing the PDP activation response message returned by the network side, and obtaining the IP address information and the DNS address information required for establishing the connection;

The address allocation step: assigning the IP address information and the DNS address information to the host to establish a connection between the host and the network side.

Preferably, in the foregoing solution, the converting step specifically includes:

The first PDP activation request message to be sent by the mobile terminal is intercepted from the air interface, the original PDP type in the first PDP activation request message is replaced with IPv4v6, and the protocol configuration option of the first PDP activation request message is set to Requesting the original PDP type from the network side The type of domain name system DNS address information obtains a second PDP activation request message.

Preferably, in the foregoing solution, when the first PDP activation request message is an IPv4 PDP activation request message, the converting step includes:

The first PDP activation request message is intercepted from the air interface, and the original PDP type IPv4 in the first PDP activation request message is replaced with IPv4v6, and IPv6 is added in the protocol configuration option of the first PDP activation request message. The DNS request information field obtains a second PDP activation request message;

When the first PDP activation request message is an IPv6 PDP activation request message, the converting step includes:

The first PDP activation request message is intercepted from the air interface, and the original PDP type IPv6 in the first PDP activation request message is replaced with IPv4v6, and IPv4 is added to the protocol configuration option of the first PDP activation request message. The DNS request information field obtains a second PDP activation request message.

Preferably, in the above solution, the IP address information includes an IPv4 address, the DNS address information includes an IPv4 DNS address, and the address allocation step includes:

Receiving a dynamic host setup protocol DHCP message requesting the IPv4 address by the host, and assigning an IPv4 address and an IPv4 DNS address to the host by using a DHCP response message.

Preferably, in the above solution, the IP address information includes an IPV6 prefix address, the DNS address information includes an IPv6 DNS address, and the address allocation step includes:

Receiving an IPV6 route request message of the host, and assigning the IPV6 prefix address and the IPv6 DNS address to the host by using an IPV6 route advertisement message, so that the host generates a global IPV6 address according to the IPV6 prefix address.

Preferably, in the foregoing solution, after the IPV6 prefix advertisement address and the IPv6 DNS address are allocated to the host by using the IPV6 route advertisement message, the method further includes:

Detection step: receiving an IPV6 neighbor request request carrying the global IPV6 address of the host And performing address conflict detection according to the global IPV6 address, and returning the address conflict detection result to the host by using an IPV6 neighbor response message.

Preferably, in the above solution, the method further includes:

The step of rewinding: when the PDP activation response message further includes a PDP activation error code, attempting to establish a dual PDP dual stack connection or a single PDP single stack of the mobile terminal according to a fallback rule corresponding to the PDP activation error code connection.

Preferably, in the foregoing solution, the step of retreating includes:

When the PDP activation response message includes a PDP activation error code that fails to establish a single PDP dual stack connection due to an IPv6 connection, the IPv4 single-stack startup state is entered, and an IPv4 single-stack connection of the mobile terminal is attempted to be established;

When the PDP activation response message includes the PDP activation error code with the IPV4 address and the single PDP dual-stack connection establishment failure, enter the dual PDP dual-stack startup state, initiate IPV6 single-stack dialing, and attempt to establish a dual PDP dual stack of the mobile terminal. Connection

When the PDP activation response message includes the IPV6 address and the PDP activation error code that fails to establish a single PDP dual stack connection, enter the dual PDP dual stack startup state, initiate IPV4 single stack dialing, and attempt to establish a dual PDP duality of the mobile terminal. Stack connection.

The embodiment of the invention further provides an implementation device for a single PDP dual stack connection of a mobile terminal, which comprises:

The converting unit is configured to acquire a first PDP activation request message to be sent by the mobile terminal, and convert the first PDP activation request message into a second PDP activation request message, where the PDP type of the second PDP activation request message is IPv4v6 ;

The sending unit is configured to send the second PDP activation request message to the network side, and the parsing unit is configured to parse the PDP activation response message returned by the network side, and obtain the IP address information and the DNS address information required for establishing the connection;

An address allocation unit configured to allocate the IP address information and the DNS address information to the host, To establish a connection between the host and the network side.

Preferably, in the above solution, the converting unit is further configured to intercept, from the air interface, a first PDP activation request message to be sent by the mobile terminal, and replace the original PDP type in the first PDP activation request message with ΙΡν4ν6, and The protocol configuration option of the first PDP activation request message is set to request another type of domain name system DNS address information other than the original PDP type from the network side to obtain a second PDP activation request message.

Preferably, in the foregoing solution, when the first PDP activation request message is an IPv4 PDP activation request message, the converting unit is configured to intercept the first PDP activation request message from an air interface, and the first PDP The original PDP type IPv4 in the activation request message is replaced with IPv4v6, and the IPv6 DNS request information field is added in the protocol configuration option of the first PDP activation request message to obtain a second PDP activation request message;

When the first PDP activation request message is an IPv6 PDP activation request message, the converting unit is configured to intercept the first PDP activation request message from the air interface, and the original PDP in the first PDP activation request message The type IPv6 is replaced with IPv4v6, and the IPv4 DNS request information field is added in the protocol configuration option of the first PDP activation request message to obtain a second PDP activation request message.

Preferably, in the foregoing solution, the IP address information includes an IPv4 address, and the DNS address information includes an IPv4 DNS address.

The address allocation unit is further configured to receive a dynamic host setup protocol DHCP message requesting the IPv4 address by the host, and assign an IPv4 address and an IPv4 DNS address to the host by using a DHCP response message.

Preferably, in the above solution, the IP address information includes an IP V6 prefix address, and the DNS address information includes an IPv6 DNS address.

The address allocation unit is further configured to receive an IPV6 routing request message of the host, and allocate the IPV6 prefix address and an IPv6 DNS address to the primary by using an IPV6 route advertisement message. So that the host generates a global IPV6 address according to the IPV6 prefix address. Preferably, in the above solution, the device further includes:

The detecting unit is configured to: after the IP address distribution unit sends the IP V6 prefix address and the IPv6 DNS address to the host by using the IPV6 route advertisement message, receive the IPV6 neighbor request message of the host that carries the global IPV6 address, according to the The global IPV6 address is used for address conflict detection, and the address conflict detection result is returned to the host through the IPV6 neighbor response message.

Preferably, in the above solution, the device further includes:

a fallback unit, configured to: when the PDP activation error message is further included in the PDP activation response message, attempt to establish a dual PDP dual stack connection or a single PDP of the mobile terminal according to a fallback rule corresponding to the PDP activation error code Single stack connection.

The embodiment of the invention further provides a mobile terminal, comprising the implementation device of the single PDP dual stack connection of the mobile terminal as described above.

Embodiments of the present invention have the following beneficial effects:

In the foregoing solution, in the case that the early mobile terminal does not support the single PDP dual-stack function, the mobile terminal can normally send the IPv4v6 PDP activation request message to the network side by replacing the original PDP type in the PDP activation request message with the IPv4v6. The corresponding IPv4 and IPv6 address information can be parsed in the PDP activation response message returned from the network side, so that the mobile terminal establishes a single PDP dual-stack connection under the network side after Rel8. DRAWINGS

1 is a schematic flow chart of a method for implementing a single PDP dual stack connection of a mobile terminal according to an embodiment of the present invention;

2 is a structural block diagram of an apparatus for implementing a single PDP dual stack connection of a mobile terminal according to an embodiment of the present invention;

3 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;

4 is a schematic diagram of signaling interaction of a single PDP dual-stack dialing by a mobile terminal according to an embodiment of the present invention; FIG. 5 is a schematic diagram of an address allocation signaling interaction of a mobile terminal according to an embodiment of the present invention; FIG. 6 is a schematic diagram of a state in which a single PDP dual stack is automatically rolled back according to an embodiment of the present invention. detailed description

The technical problems, the technical solutions, and the advantages of the embodiments of the present invention will become more apparent from the following detailed description.

The embodiment of the present invention is directed to the problem that the mobile terminal in the prior art cannot establish a single PDP dual stack connection under the network side after the Rel8, and provides a mobile terminal and a single PDP dual stack connection implementation method and device thereof. The mobile terminal is allowed to establish a single PDP dual stack connection under the network side after Rel8.

FIG. 1 is a schematic flowchart of a method for implementing a single PDP dual-stack connection of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 1, the embodiment includes:

Step 101: Obtain a first PDP activation request message to be sent by the mobile terminal, and convert the first PDP activation request message into a second PDP activation request message, where the PDP type of the second PDP activation request message is IPv4v6;

Step 102: Send the second PDP activation request message to the network side.

Step 103: Parse the PDP activation response message returned by the network side, and obtain the IP address information and the DNS address information required for establishing the connection.

Step 104: Assign the IP address information and the DNS address information to the host to establish a connection between the host and the network side.

The implementation method of the present invention, for the case that the early mobile terminal does not support the single PDP dual stack function, enables the mobile terminal to normally send the IPv4v6 PDP activation request message to the network by replacing the original PDP type in the PDP activation request message with IPv4v6. On the side, the corresponding IPv4 and IPv6 address information can be parsed in the PDP activation response message returned from the network side, so that the mobile terminal establishes a single PDP dual-stack connection under the network side after Rel8.

Specifically, the step 101 includes: The first PDP activation request message to be sent by the mobile terminal is intercepted from the air interface, the original PDP type in the first PDP activation request message is replaced with IPv4v6, and the protocol configuration option of the first PDP activation request message is set to Another type of domain name system DNS address information other than the original PDP type is requested from the network side to obtain a second PDP activation request message.

The first PDP activation request message may be an IPv4 PDP activation request message or an IPv6 PDP activation request message. When the mobile terminal establishes a single PDP dual-stack connection, it needs to activate the first PDP.

The PDP type in the live request message (that is, the original PDP activation request message intercepted from the air interface) is replaced with IPv4v6, and the setting of the protocol configuration option (PCO-IE) is modified to request the DNS address information from the network side;

Specifically, when the first PDP activation request message is an IPv4 PDP activation request message, the step 101 includes:

Specifically, when the first PDP activation request message is an IPv6 PDP activation request message, the step 101 includes:

In the step 103, after receiving the PDP activation response message returned by the network side, the PDP type in the PDP activation response message is modified to the type before the replacement, and the IP address information and the DNS address information are parsed from the PDP activation response message. . When the connection is established, if the PDP type of the original PDP activation request message sent is IPv4, the PDP type in the PDP activation response message needs to be modified to IPv4 after receiving the PDP activation response message of the PDP type of the IPv4v6 returned by the network. ;

When the connection is established, if the PDP type of the original PDP activation request message sent is IPv6, the PDP type in the PDP activation response message needs to be changed to IPv6 after receiving the PDP activation response message of the PDP type of the IPv4v6. .

Preferably, in the above solution, the IP address information includes an IPv4 address, the DNS address information includes an IPv4 DNS address, and the step 104 includes: receiving a DHCP (Dynamic Host Setup Protocol) message requesting the IPv4 address by the host, and performing The DHCP address is negotiated, and the IPv4 address and the IPv4 DNS address are assigned to the host through a DHCP response message.

Preferably, in the above solution, the IP address information includes an IP V6 prefix address, and the DNS address information includes an IPv6 DNS address, and the step 104 includes:

Receiving an IPV6 Routing Request (RS) message of the host, and assigning the IPV6 prefix address and an IPv6 DNS address to the host by using an IPV6 Route Advertisement message (RA), so that the host generates a global IPV6 according to the IPV6 prefix address. address.

The detecting step is: receiving an IPV6 neighbor request message (NS) carrying the global IPV6 address of the host, and performing address conflict detection according to the global IPV6 address;

The address conflict detection result is returned to the host through the IPV6 Neighbor Response message (NA). Preferably, the mobile terminal of the present invention also supports an automatic fallback function, that is, when a single PDP dual-stack dialing is initiated, when the network side does not support the IPv4v6 single PDP dual stack function, an automatic fallback function needs to be implemented. Specifically, the method further includes a step of rewinding: after receiving the PDP activation response message returned by the network side, determining whether a PDP activation error code is included in the PDP activation response message, and further including PDP activation in the PDP activation response message. When the error code is activated, it is wrong with the PDP activation. The fallback rule corresponding to the error is attempted to establish a dual PDP dual stack connection or a single PDP single stack connection of the mobile terminal.

Preferably, in the foregoing solution, the step of retreating includes:

Specifically, when the PDP activation error code of the #28 is included in the PDP activation response message, an attempt is made to establish an IPv4 single-stack connection of the mobile terminal;

When the PDP activation response message includes the IPV4 address and the PDP activation error code of #52, the IPV6 single-stack dialing is initiated, and the dual PDP dual-stack connection of the mobile terminal is attempted to be established;

When the PDP activation response message includes the IPV6 address and the PDP activation error code of #52, the IPV4 single-stack dialing is initiated, and an attempt is made to establish a dual PDP dual-stack connection of the mobile terminal.

Preferably, the automatic fallback function can be implemented in different scenarios as follows:

1. When the PDP activation error code returned by the network side is #28, the IPv4 dialing process will be initiated, and an IPv4 single-stack connection is attempted.

2. When the PDP activation response message returned by the network side includes the IPV4 address and the PDP activation error code without the specific SM cause, the IPv6 dialing process will be initiated to try to establish a dual PDP dual stack.

3. The PDP activation response message returned by the network side includes the PDP with the IPV4 address and #52. When the error code is activated, an IPv6 dialing process will be initiated to attempt to establish a dual PDP dual stack connection;

4. When the PDP activation response message returned by the network side includes the IPV6 address and the #52 PDP activation error code, the IPv4 dialing process will be initiated to attempt to establish a dual PDP dual stack connection.

5. When the PDP activation response message returned by the network side includes the IPV4 address and the #50 PDP activation error code, the IPv6 dialing process will not be initiated, indicating that the mobile terminal only works in the IPv4 single-stack mode.

6. When the PDP activation response message returned by the network side includes the IPV6 address and the #51 PDP activation error code, the IPv4 dialing process will not be initiated, indicating that the mobile terminal only works in the IPv6 single-stack mode.

2 is a structural block diagram of an apparatus for implementing a single PDP dual-stack connection of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 2, this embodiment includes:

The converting unit 20 is configured to acquire a first PDP activation request message to be sent by the mobile terminal, and convert the first PDP activation request message into a second PDP activation request message, where the PDP type of the second PDP activation request message is IPv4v6;

The sending unit 22 is configured to send the second PDP activation request message to the network side; the parsing unit 24 is configured to parse the PDP activation response message returned by the network side, and obtain the IP address information and the DNS address information required for establishing the connection;

The address assigning unit 26 is configured to allocate the IP address information and the DNS address information to the host to establish a connection between the host and the network side.

Preferably, in the above solution, the converting unit 20 is further configured to: intercept the first PDP activation request message to be sent by the mobile terminal from the air interface, replace the original PDP type in the first PDP activation request message with IPv4v6, and The protocol configuration option of the first PDP activation request message is set to request another type of domain name system DNS address information other than the original PDP type from the network side to obtain a second PDP activation request message.

Preferably, in the above solution, the first PDP activation request message is an IPv4 PDP activation. When the message is requested, the converting unit 20 is configured to intercept the first PDP activation request message from the air interface, and replace the original PDP type IPv4 in the first PDP activation request message with IPv4v6, in the first PDP Adding a DNS request information field of the IPv6 to the protocol configuration option of the activation request message, to obtain a second PDP activation request message;

When the first PDP activation request message is an IPv6 PDP activation request message, the converting unit 20 is configured to intercept the first PDP activation request message from an air interface, and to original in the first PDP activation request message The PDP type IPv6 is replaced with IPv4v6, and the IPv4 DNS request information field is added in the protocol configuration option of the first PDP activation request message to obtain a second PDP activation request message.

The address allocation unit is further configured to receive an IPV6 routing request message of the host, and allocate the IPV6 prefix address and an IPv6 DNS address to the host by using an IPV6 route advertisement message, so that the host generates the IPV6 prefix address according to the IPV6 Global IPV6 address.

Preferably, in the above solution, the device further includes:

Preferably, in the above solution, the device further includes: a fallback unit, configured to: when the PDP activation error message is further included in the PDP activation response message, attempt to establish a dual PDP dual stack connection or a single PDP of the mobile terminal according to a fallback rule corresponding to the PDP activation error code Single stack connection.

The implementation device of the present invention enables the mobile terminal to normally send an IPv4v6 PDP activation request message to the network by replacing the original PDP type in the PDP activation request message with IPv4v6 for the case where the early mobile terminal does not support the single PDP dual stack function. On the side, the corresponding IPv4 and IPv6 address information can be parsed in the PDP activation response message returned from the network side, so that the mobile terminal establishes a single PDP dual-stack connection under the network side after Rel8.

The embodiment of the present invention further provides a mobile terminal, which includes the device for implementing a single PDP dual stack connection of the mobile terminal as described above. Specifically, the mobile terminal may be a data card disposed in the host, and the mobile terminal can be implemented by the mobile terminal. The connection between the host and the network side.

The method and device for implementing single PDP dual stack connection of the mobile terminal of the present invention are described in detail below with reference to the accompanying drawings and specific embodiments:

The mobile terminal includes two modules, a WAN (Wide Area Network) and a LAN (Local Area Network), wherein the WAN module is configured to send a PDP activation request message to the network side to obtain address information required for connection establishment. Specifically, the conversion unit, the sending unit, and the parsing unit may be included. The LAN module is configured to control a connection status between the mobile terminal and the host, and allocate address information acquired from the network side to the host, and specifically may include the foregoing allocating unit.

Preferably, the WAN module of the mobile terminal is configured to control the PDP context negotiation between the mobile terminal and the network side to obtain an IPv4 address required for an IPv4 connection or an IPv6 address and DNS address information required for an IPv6 connection; The LAN module is configured to control the connection state between the mobile terminal and the host, and is responsible for allocating IPv4 and IPv6 address information acquired by the WAN module from the network side to the host through DHCP negotiation and stateless automatic configuration.

FIG. 3 is a block diagram of a mobile terminal according to a specific embodiment of the present invention, where the mobile terminal is in the mobile terminal The WAN module, the LAN module, and the wireless communication protocol stack module are configured, wherein the WAN module is configured to control the mobile terminal to perform PDP negotiation with the network side, and the LAN module is configured to control the connection state and address negotiation of the mobile terminal and the host before. When the dial-up connection is established, the host sends a dial-up request to the mobile terminal, and the WAN module controls the wireless communication protocol stack module to send a PDP activation request message to the network side to obtain the address information. After the mobile terminal receives the PDP activation response message returned by the network side, the WAN module notifies the LAN module to establish a connection with the host, and then parses the IP address information from the PDP activation response message returned from the network side and provides the information to the LAN module, and the LAN module passes DHCP negotiation assigns IPv4 addresses and DNS information to hosts, and assigns IPv6 addresses to hosts through stateless autoconfiguration.

As shown in FIG. 4, it is a schematic diagram of signaling interaction of a single PDP dual-stack dialing in a mobile terminal according to a specific embodiment of the present invention. The specific process is as follows:

1. When the dial-up connection is established, the host sends a dial-up request to the mobile terminal.

2. After receiving the dialing request, the mobile terminal does not support single PDP dual stack dialing, so the mobile terminal will initiate an IPv4 or IPv6 PDP activation request message according to the default setting. When the WAN module determines that the single PDP dual-stack dialing needs to be established, the original PDP activation request message is intercepted from the air interface before the original PDP activation request message is sent, and the PDP type of the address information request part is modified to IPv4v6, and the protocol configuration option is also selected. Add request information for IPv6 or IPv4 DNS. If the mobile terminal sends an IPv4 PDP activation request message by default, the WAN module needs to change the PDP type information in its address field from 0x21 (IPv4) to 0x8d.

(IPv4v6), also add the IPv6 DNS Request Information field (0x03) in the Protocol Configuration Option (PCO-IE). If the mobile terminal sends an IPv6 PDP activation request message by default, the WAN module needs to change the PDP type information in its address field from 0x57 (IPv4) to 0x8d.

(IPv4v6), adding the IPv4 DNS Request Information field in the Protocol Configuration Option (PCO-IE);

In addition, if the WAN module determines that it is not currently required to establish a single PDP dual stack dialing, The original PDP activation request message is sent to the network side.

3. The WAN module sends the PDP activation request message obtained after the modification is completed to the network side through the wireless communication protocol stack module.

4. After receiving the IPv4v6 PDP activation request message sent by the mobile terminal, the network side encapsulates the IPv4 address, the IPv6 address, and other configuration information in the activation PDP response message, and sends it back to the mobile terminal, where other configuration information includes the DNS address information. And/or error code information.

5. After the WAN module detects that the network side returns the PDP activation response message, it changes the PDP type in the PDP activation response message to the default PDP type, and resolves the IPv4 address, IPv6 address, and DNS from the PDP activation response message. The address information is then returned to the wireless communication protocol stack module. If the PDP activation response message returned by the network side carries the error code information, the WAN module will automatically control the wireless communication protocol stack to perform automatic rollback according to the parsed error code information.

6. After receiving the PDP activation response message, the WAN module notifies the LAN module and the host that the connection is successfully established, and the LAN module starts the IPv4 and IPv6 protocol stacks.

7. The WAN module provides the IPv4 address, the IPv6 address, and the DNS address parsed from the PDP activation response message to the LAN module.

After receiving the address information provided by the WAN module, the LAN module assigns the IPv4 address and the DNS to the host through DHCP negotiation, and assigns the IPv6 address to the host through stateless autoconfiguration. The IPv6 DNS is assigned to the host through the stateful DHCPv6 configuration. At this point, the address assignment is completed, the connection between the host and the network side is successfully established, and communication can be performed between the host and the network side.

As shown in FIG. 5, the mobile terminal address allocation interaction diagram disclosed in the present disclosure is as follows:

1. After receiving the IPv4 address and DNS address information provided by the WAN module, the LAN module allocates the IPv4 address and the DNS address information to the host through DHCP negotiation. Specifically, after receiving the DHCP request message of the host requesting the IPV4 address, the LAN module receives the DHCP request message. Respond to messages via DHCP Assign IPv4 address and DNS address information to the host.

2. After receiving the IPv6 address and DNS address information provided by the WAN module, the LAN module will assign the IPv6 address to the host through stateless autoconfiguration. Specifically, the host sends a route request (RS) message to the mobile terminal, and after receiving the route request message, the LAN module returns the IPv6 prefix address provided by the WAN module to the host through a route advertisement (RA) message, and the host receives the IPv6 prefix address. The global IPv6 address will be automatically generated. The LAN module configures the IPv6 DNS to the host through the stateless DHCPv6 configuration, which is not mentioned here.

3. After the host generates a global IPv6 address, it sends a Neighbor Solicitation (NS) message carrying the global IPv6 address to the mobile terminal for address collision detection (DAD). After receiving the Neighbor Solicitation (NS) message, the LAN module needs to construct the corresponding neighbor. A notification (NA) message is sent to the host to complete address conflict detection (DAD).

The foregoing IPv4 address negotiation and IPv6 address negotiation have no sequential relationship. Figure 5 is only a possible execution process.

As shown in FIG. 6 , it is a single PDP dual stack automatic fallback state diagram of a mobile terminal according to the present invention, where SM (session management) is a session management module in a connection management layer of a wireless communication protocol stack, Manage the activation status of the PDP context and control the establishment, modification, and release of the radio access bearer. In the present invention, in order to realize the automatic fallback of the mobile terminal, two final states of IPv4v6-SM-DOWN (single PDP dual stack termination) and IPv4v6-SM-UP (single PDP dual stack operation) are added for the state machine of the SM. And the corresponding IPv4v6_SM_COMING_UP (single PDP dual stack startup) and IPv4v6-SM-COMING-DOWN (single PDP dual stack shutdown) two intermediate conversion states. These four states are connected to other single-stack states (IPv4-SM-UP (IPv4 single-stack boot), IPv6-SM-UP (IPv6 single-stack boot)) and dual PDP dual-stack state (IPv4_IPv6_SM_UP, dual PDP dual stack boot) The state transition process between the following is as follows:

1. Before the single PDP dual stack dialing is established, the SM module is in the IPv4v6-SM-DOWN state. After the mobile terminal receives the dialing command of the single PDP dual stack, the WAN module controls the wireless communication protocol stack module to send a single PDP dual stack activation request message, and modifies the state of the SM module to IPv4v6-SM_COMING_UP;

2. After the mobile terminal receives the single PDP dual stack activation response message returned by the network side, the WAN module determines that the network side accepts the single PDP dual stack dialing request of the mobile terminal and allocates IPv4 and

After the IPv6 address, the state of the SM module is changed to IPv4v6-SM_UP, and the LAN module single PDP dual-stack connection is notified;

3. In the case of connection establishment, when the mobile terminal receives the dial-off command, the WAN module will control the wireless communication protocol stack module to send a single PDP dual-stack deactivation request message, and modify the state of the SM module to IPv4v6— SM—COMING— DOWN;

4. After the mobile terminal receives the single PDP dual stack deactivation response message returned by the network side, the WAN module changes the state of the SM module to IPv4v6_SM_DOWN, and notifies the LAN module that the single PDP dual stack connection is disconnected;

5. After the mobile terminal receives the single PDP dual stack activation response message returned by the network side, the WAN module determines that the network side returns the IPv4 address and carries the #50 PDP activation error code, and the state of the SM module is modified to IPv4— SM_UP, simultaneously notifying the LAN module that an IPv4 single-stack connection is currently established;

6. When the mobile terminal receives the single PDP dual stack activation response message returned by the network side, the WAN module determines that the network side returns the IPv6 address and carries the #51 PDP activation error code, and the state of the SM module is modified to IPv6. SM_UP, and notify the LAN module that the IPv6 single-stack connection is currently established;

7. After the mobile terminal receives the single PDP dual stack activation response message returned by the network side, the WAN module determines that the network side returns the IPv4 address and carries the #52 PDP activation error code, and the state of the SM module is changed to IPv4— IPv6—SM—COMING—UP, then control the wireless communication protocol stack module to initiate IPv6 single-stack dialing. If the dialing is successful, the state of the SM module is modified to IPv4—IPv6—SM—UP, and notify the LAN module to establish a dual PDP dual stack connection;

8. After the mobile terminal receives the single PDP dual stack activation response message returned by the network side, the WAN module determines that the network side returns the IPv6 address and carries the #52 PDP activation error code, and the state of the SM module is modified to IPv4— IPv6—SM—COMING—UP, then control the wireless communication protocol stack module to initiate IPv4 single-stack dialing. If the dialing is successful, modify the state of the SM module to IPv4—IPv6—SM—UP, and notify the LAN module of dual PDP dual stack connections. set up;

9. After the mobile terminal receives the single PDP dual stack activation reject message returned by the network side, the WAN module determines that if the PDP activation error code reason rejected by the network side is #28, the wireless communication protocol stack module is controlled to initiate IPv4 single stack dialing. If the dialing is successful, the state of the SM module is changed to IPv4_SM UP, and the LAN module is notified that the IPv4 single stack connection is currently established; the exception process is as follows:

10. After the mobile terminal receives the single PDP dual-stack activation rejection message returned by the network side for other reasons, the WAN module changes the state of the SM module to IPv4v6-SM_DOWN, and notifies the LAN module that the connection establishment fails.

11. In the case of connection establishment, when the mobile terminal deactivates the PDP due to other abnormal reasons, the WAN module modifies the state of the SM module to IPv4v6-SM_DOWN, and informs that the LAN module connection is abnormally disconnected.

Many of the functional components described in this specification are referred to as modules to more particularly emphasize the independence of their implementation.

In an embodiment of the invention, the modules may be implemented in software for execution by various types of processors. For example, an identified executable code module can comprise one or more physical or logical blocks of computer instructions, which can be constructed, for example, as an object, procedure, or function. Nonetheless, the executable code of the identified modules need not be physically located together, but may include different instructions stored in different physicalities. When these instructions are logically combined, they form a module and implement the specified purpose of the module. . In fact, the executable code module can be a single instruction or a number of instructions, and can even be distributed across multiple different code segments, distributed among different programs, and distributed across multiple memory devices. Likewise, operational data may be identified within the module and may be implemented in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed at different locations (including on different storage devices), and may at least partially exist as an electronic signal on the system or network side.

When the module can be implemented by software, considering the level of the existing hardware process, the module can be implemented in software. Without considering the cost, a person skilled in the art can construct a corresponding hardware circuit to implement the corresponding function. The hardware circuitry includes conventional Very Large Scale Integration (VLSI) circuits or gate arrays as well as existing semiconductors such as logic chips, transistors, or other discrete components. Modules can also be implemented with programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices, and the like.

In the method embodiments of the present invention, the sequence numbers of the steps are not used to limit the sequence of the steps. For those skilled in the art, the steps of the steps are changed without any creative work. It is also within the scope of the invention.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Industrial applicability

For the case where the early mobile terminal does not support the single PDP dual stack function, the mobile terminal can normally send the IPv4v6 PDP activation request message to the network side by replacing the original PDP type in the PDP activation request message with the IPv4v6, and can access the network from the network. The PDP activation response message returned by the side parses the corresponding IPv4 and IPv6 address information, so that the mobile terminal establishes a single PDP dual-stack connection under the network side after Rel8.

Claims

Claim

A method for implementing a single PDP dual stack connection of a mobile terminal, comprising:

The conversion step: obtaining a first PDP activation request message to be sent by the mobile terminal, and converting the first PDP activation request message into a second PDP activation request message, where the PDP type of the second PDP activation request message is IPv4v6;

The method for implementing a single-PDP dual-stack connection of a mobile terminal according to claim 1, wherein the converting step specifically includes:

The first PDP activation request message to be sent by the mobile terminal is intercepted from the air interface, the original PDP type in the first PDP activation request message is replaced with IPv4v6, and the protocol configuration option of the first PDP activation request message is set to Another type of domain name system DNS address information other than the original PDP type is requested from the network side to obtain a second PDP activation request message.

The method for implementing a single-PDP dual-stack connection of a mobile terminal according to claim 2, wherein, when the first PDP activation request message is an IPv4 PDP activation request message, the converting step includes:

When the first PDP activation request message is an IPv6 PDP activation request message, the converting step includes: The first PDP activation request message is intercepted from the air interface, and the original PDP type IPv6 in the first PDP activation request message is replaced with IPv4v6, and IPv4 is added to the protocol configuration option of the first PDP activation request message. The DNS request information field obtains a second PDP activation request message.

The method for implementing a single-PDP dual-stack connection of a mobile terminal according to any one of claims 1 to 3, wherein the IP address information includes an IPv4 address, and the DNS address information includes an IPv4 DNS address. The address allocation steps include:

The method for implementing a single-PDP dual-stack connection of a mobile terminal according to any one of claims 1 to 3, wherein the IP address information includes an IPV6 prefix address, and the DNS address information includes an IPv6 DNS address. The address allocation step includes:

The method for implementing a single-PDP dual-stack connection of a mobile terminal according to claim 5, wherein the assigning the IPV6 prefix address and the IPv6 DNS address to the host by using the IPV6 route advertisement message further includes:

The detecting step is: receiving an IPV6 neighbor request message carrying the global IPV6 address of the host, performing address conflict detection according to the global IPV6 address, and returning the address conflict detection result to the host by using an IPV6 neighbor response message.

The method for implementing a single-PDP dual-stack connection of a mobile terminal according to claim 1, wherein the method further includes:

The step of reverting: when the PDP activation response message further includes a PDP activation error code, attempting to establish a dual PDP of the mobile terminal according to a fallback rule corresponding to the PDP activation error code Dual stack connection or single PDP single stack connection.

The method for implementing a single-PDP dual-stack connection of a mobile terminal according to claim 7, wherein the step of retreating comprises:

9. A device for implementing a single PDP dual stack connection of a mobile terminal, comprising:

The address allocation unit is configured to allocate the IP address information and the DNS address information to the host to establish a connection between the host and the network side.

The apparatus for implementing a single-PDP dual-stack connection of a mobile terminal according to claim 9, wherein the converting unit is further configured to intercept, from the air interface, a first PDP activation request message to be sent by the mobile terminal, where the first The original PDP type in the PDP activation request message is replaced with ΙΡν4ν6, and the protocol configuration option of the first PDP activation request message is set to request the original from the network side. Another type of domain name system DNS address information other than the PDP type obtains a second PDP activation request message.

11. The apparatus for implementing a single PDP dual stack connection of a mobile terminal according to claim 10, wherein

When the first PDP activation request message is an IPv4 PDP activation request message, the converting unit is configured to intercept the first PDP activation request message from an air interface, and the original PDP in the first PDP activation request message The type IPv4 is replaced by the IPv4v6, and the DNS request information field of the IPv6 is added in the protocol configuration option of the first PDP activation request message, to obtain a second PDP activation request message;

The device for implementing a single-PDP dual-stack connection of a mobile terminal according to any one of claims 9-11, wherein the IP address information includes an IPv4 address, and the DNS address information includes an HV4 DNS address.

The apparatus for implementing a single-PDP dual-stack connection of a mobile terminal according to any one of claims 9-11, wherein the IP address information includes an IPV6 prefix address, and the DNS address information includes an IPv6 DNS address.

The address allocation unit is further configured to receive an IPV6 routing request message of the host, and allocate the IPV6 prefix address and an IPv6 DNS address to the primary by using an IPV6 route advertisement message. So that the host generates a global IPV6 address according to the IPV6 prefix address.

The device for implementing a single-PDP dual-stack connection of a mobile terminal according to claim 13, wherein the device further comprises:

The device for implementing a single-PDP dual-stack connection of a mobile terminal according to claim 9, wherein the device further comprises:

A mobile terminal comprising the mobile terminal single PDP dual stack connection implementation apparatus according to any one of claims 9-15.

A storage medium storing a program capable of executing the mobile terminal single PDP dual stack connection according to any one of claims 1-8.