CN103327482A - Terminal and network switching control method - Google Patents

Abstract

The present invention proposes a terminal and a network switching method, wherein the terminal includes an acquisition unit, which acquires the IP address type supported by the access network when cell reselection occurs; a judgment unit is used to judge the IP address type supported by the access network Whether the supported IP address type is the same as the currently used IP address type; the dialing unit, when the judging result is different, performs dialing according to the IP address type supported by the access network. Through the technical solution of the present invention, when the network environment changes, the IP address type can be automatically updated to ensure that the terminal can fully use network resources, minimize the impact on service data, and improve the online experience.

Description

Terminal and network switching control method

technical field

The present invention relates to the technical field of communication, in particular, to a terminal and a network switching control method.

Background technique

At present, the terminal must specify the dialing type when initiating dialing. If the specified type is IPv4, only IPv4 addresses can be obtained; if the specified type is IPv6, only IPv6 addresses can be obtained; if the specified type is IPv4 and IPv6, both Get IPv4 and IPv6 addresses.

Users cannot know whether the current local area network supports IPv6 before using it, so generally choose IPv4 and IPv6 types for dialing, the obtained address depends on the network support, it may be IPv4 address or IPv6 address or IPv4 and IPv6 address, after obtaining the address, This address has been used during this dial-up process and will not be automatically updated. If the IPv4 address obtained before, the terminal still retains the IPv4 address when entering a network that supports IPv6, so when switching between different networks Invalid IP addresses will be used for data transmission, resulting in the inability to automatically enable the IPv6 protocol stack under the IPv6 network, and the terminal cannot transmit data. Therefore, a new solution is needed, which can automatically update the IP address type during network switching, so as to ensure that the terminal can fully use network resources.

Contents of the invention

Considering the background technology above, a new network switching control scheme is proposed, which can automatically update the IP address type when the network environment changes.

In view of this, according to one aspect of the present invention, a terminal is provided, including: an acquiring unit, when cell reselection occurs, acquires the IP address type supported by the access network; a judging unit, used to judge the access Whether the IP address type supported by the network is the same as the currently used IP address type; the dialing unit, when the judging result is different, performs dialing according to the IP address type supported by the access network.

When cell reselection occurs on the terminal (the network environment has changed), it is determined whether to trigger a new dial-up according to the IP address type supported by the currently connected network and the currently obtained IP address type. When the two are found to be different, perform The IP address type is updated, and the data is transmitted according to the new IP address, so that the current data service can be continuously carried out, and the impact on the service data is minimized.

In the above technical solution, preferably, the acquiring unit is configured to send a request to the base station to acquire the IP address type supported by the packet service data node (PDSN) corresponding to the access network, and receive a request response from the base station , acquiring the IP address type supported by the packet service data node according to the request response. When the terminal accesses the base station, the PDSN to be accessed in the next step has been determined, so the terminal can obtain the IP address type of the packet service data node through the base station.

In any of the above technical solutions, preferably, the communication unit of the terminal is configured to determine that the judgment result of the judging unit is not the same and the terminal stores an IP address of the same type as the IP address supported by the access network. address, communicate based on the IP address. When the type specified by the terminal to initiate dialing is IPV4 and IPV6, it can obtain both IPV4 and IPV6 addresses at the same time. Assuming that the previously connected network is a V6 network, after switching to the V4 network, the IPV6 address becomes invalid, and the IPV4 address saved by the terminal is used. communicate directly. Certainly, the reserved IPV4 address may not be used, and a new IPV4 address may be obtained by redialing.

If the IPV4 address is not within the address range specified by the V4 network, dial again to confirm the new IPV4 address. A manner of judging whether the IPV4 address is within the address range may be that the terminal feeds back the obtained IPV4 address to a corresponding network element PDSN for judging.

In any of the above technical solutions, preferably, the dialing unit is used for when the judging result of the judging unit is different and the terminal does not save an IP address of the same type as the IP address supported by the access network , disconnect the current point-to-point connection, send a new point-to-point connection request to the packet service data node corresponding to the access network, and obtain an IP address of the same type as the IP address supported by the packet service data node, according to the new IP address for data transfer. Since the previous IP address is invalid, you can disconnect the current point-to-point connection, re-initiate a new point-to-point connection, and dial according to the new IP address type.

In any of the above technical solutions, preferably, the communication processor of the terminal is configured to report the network handover status to the acquisition unit when cell reselection occurs; After the network switches the state, send the request to the base station.

It should be understood that the communication processor may also send to the base station to obtain the IP address type supported by the access network.

In any of the above technical solutions, preferably, it may further include: a detection unit, which detects the current data service status of the terminal, and if it is detected that the service data cannot be transmitted, then notifies the acquisition unit to obtain the data corresponding to the access network The IP address type supported by the packet service data node.

A packet service data node may be connected to multiple base stations. When the terminal switches connections between the base stations connected to the same packet service data node, its IP address type does not change, and there is no need to update the IP address type at this time. , the business data will not be affected by cell reselection, otherwise, the business data will not be able to be transmitted normally, and at this time it is necessary to update the IP address type, so when the business data is found to be abnormal, the IP address will be updated Type judgment, when the judgment result is inconsistent, redial is performed according to the new IP address type.

According to another aspect of the present invention, there is also provided a network handover control method, including: when the terminal undergoes cell reselection, obtain the IP address type supported by the access network; determine the IP address supported by the access network Whether the type is the same as the currently used IP address type; if the judging result is different, perform dialing according to the IP address type supported by the access network.

When cell reselection occurs on the terminal (the network environment has changed), it is determined whether to trigger a new dial-up according to the IP address type supported by the currently connected network and the currently obtained IP address type. When the two are found to be different, perform The IP address type is updated, and the data is transmitted according to the new IP address, so that the current data service can be continuously carried out, and the impact on the service data is minimized.

In the above technical solution, preferably, the step of obtaining the IP address type supported by the access network may include: sending a request to the base station to obtain the IP address type supported by the packet service data node; receiving the request from the base station Response, obtaining the IP address type supported by the packet service data node according to the request response.

When the terminal accesses the base station, the PDSN to be accessed in the next step has been determined, so the terminal can obtain the IP address type of the packet service data node through the base station.

In any of the above technical solutions, preferably, when the judgment result is different and the terminal stores an IP address of the same type as the IP address supported by the access network, communication is performed according to the IP address. When the type specified by the terminal to initiate dialing is IPV4 and IPV6, it can obtain both IPV4 and IPV6 addresses at the same time. Assuming that the previously connected network is a V6 network, after switching to the V4 network, the IPV6 address becomes invalid, and the IPV4 address saved by the terminal is used. communicate directly. If the IPV4 address is not within the address range specified by the V4 network, dial again to confirm the new IPV4 address. A manner of judging whether the IPV4 address is within the address range may be that the terminal feeds back the obtained IPV4 address to a corresponding network element PDSN for judging.

In any of the above technical solutions, preferably, when the judgment result is different and the terminal does not store an IP address of the same type as the IP address supported by the access network, the current point-to-point connection is disconnected, and the The packet service data node corresponding to the access network sends a new point-to-point connection request; obtains an IP address of the same type as the IP address supported by the packet service data node, and performs data transmission according to the new IP address. Since the previous IP address is invalid, you can disconnect the current point-to-point connection, re-initiate a new point-to-point connection, and dial according to the new IP address type.

In any of the above technical solutions, preferably, when cell reselection occurs, the communication processor in the terminal reports the network switching status to the application processor, and the application processor sends the request to the base station. It should be understood that the communication processor may also send to the base station to obtain the IP address type supported by the access network.

In any of the above technical solutions, preferably, it may further include: detecting the current data service status, and if it is detected that the service data cannot be transmitted, obtaining the IP address type supported by the packet service data node corresponding to the access network. A packet service data node may be connected to multiple base stations. When the terminal switches connections between the base stations connected to the same packet service data node, its IP address type does not change, and there is no need to update the IP address type at this time. , the business data will not be affected by cell reselection, otherwise, the business data will not be able to be transmitted normally, and at this time it is necessary to update the IP address type, so when the business data is found to be abnormal, the IP address will be updated Type judgment, when the judgment result is inconsistent, redial is performed according to the new IP address type.

Description of drawings

Fig. 1 shows a block diagram of a terminal according to an embodiment of the present invention;

Fig. 2 shows a schematic diagram of a communication system according to an embodiment of the present invention;

FIG. 3 shows a schematic diagram of interaction between network elements according to an embodiment of the present invention;

FIG. 4 shows a flowchart of a network switching control method according to an embodiment of the present invention;

Fig. 5 shows a flow chart of a network switching control method according to another embodiment of the present invention.

Detailed ways

In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in a second mode different from that described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

The terminals according to the present invention include portable terminals such as mobile phones and tablet computers, and the terminals support multi-mode multi-standby or multi-mode single-standby or single-mode.

FIG. 1 shows a block diagram of a terminal according to an embodiment of the present invention.

As shown in Figure 1, the terminal 100 according to the embodiment of the present invention includes: an acquisition unit 102, which acquires the IP address type supported by the access network when cell reselection occurs; a judgment unit 104, which is used to judge the access Whether the IP address type supported by the network is the same as the currently used IP address type; if the judgment result is different, the dialing unit 106 performs dialing according to the IP address type supported by the access network.

When cell reselection occurs on the terminal (the network environment has changed), it is determined whether to trigger a new dial-up according to the IP address type supported by the currently connected network and the currently obtained IP address type. When the two are found to be different, perform The IP address type is updated, and the data is transmitted according to the new IP address, so that the current data service can be continuously carried out, and the impact on the service data is minimized.

In the above technical solution, preferably, the acquiring unit 102 is configured to send a request to the base station to acquire the IP address type supported by the packet service data node (PDSN) corresponding to the access network, and receive the request from the base station Response, obtaining the IP address type supported by the packet service data node according to the request response. When the terminal accesses the base station, the PDSN to be accessed in the next step has been determined, so the terminal can obtain the IP address type of the packet service data node through the base station.

In any of the above technical solutions, preferably, the communication unit 108 of the terminal is configured to determine that the judgment result of the judging unit is not the same and the terminal stores an IP address of the same type as the IP address supported by the access network. In the case of an IP address, communication is performed based on the IP address. When the type specified by the terminal to initiate dialing is IPV4 and IPV6, it can obtain both IPV4 and IPV6 addresses at the same time. Assuming that the previously connected network is a V6 network, after switching to the V4 network, the IPV6 address becomes invalid, and the IPV4 address saved by the terminal is used. communicate directly. Certainly, the reserved IPV4 address may not be used, and a new IPV4 address may be obtained by redialing.

If the IPV4 address is not within the address range specified by the V4 network, dial again to confirm the new IPV4 address. A manner of judging whether the IPV4 address is within the address range may be that the terminal feeds back the obtained IPV4 address to a corresponding network element PDSN for judging.

In any of the above technical solutions, preferably, the dialing unit 106 is configured to determine that the judgment result of the judging unit is different and the terminal does not save an IP address of the same type as the IP address supported by the access network , disconnect the current point-to-point connection, send a new point-to-point connection request to the packet service data node corresponding to the access network, and obtain an IP address of the same type as the IP address supported by the packet service data node, according to the new IP address for data transmission. Since the previous IP address is invalid, you can disconnect the current point-to-point connection, re-initiate a new point-to-point connection, and dial according to the new IP address type.

In any of the above technical solutions, preferably, the communication processor of the terminal is configured to report the network switching status to the acquisition unit 102 when cell reselection occurs; the acquisition unit 102 receives the communication processor After the reported network switching state, send the request to the base station.

It should be understood that the communication processor may also send to the base station to obtain the IP address type supported by the access network.

In any of the above technical solutions, preferably, it may further include: a detecting unit 110, detecting the current data service status, and notifying the obtaining unit 102 to obtain the packet corresponding to the access network if it is detected that the service data cannot be transmitted IP address types supported by service data nodes.

A packet service data node may be connected to multiple base stations. When the terminal switches connections between the base stations connected to the same packet service data node, its IP address type does not change, and there is no need to update the IP address type at this time. , the business data will not be affected by cell reselection, otherwise, the business data will not be able to be transmitted normally, and at this time it is necessary to update the IP address type, so when the business data is found to be abnormal, the IP address will be updated Type judgment, when the judgment result is inconsistent, redial is performed according to the new IP address type.

Next, the application process of the terminal in the communication system according to the present invention will be further described with reference to FIG. 2 and FIG. 3 .

Under the current network conditions, support for IPv6 functions requires the support of PDSN or PDN (shared data network), so there is a problem of using invalid IP addresses for data transmission when switching between different networks, such as terminals retaining IPv6 However, under the IPv4 network, the IPv6 address becomes invalid, resulting in serious interruption of data services, and vice versa.

As shown in FIG. 2 , PDSN1 supports IPv4 and IPv6, PDSN2 only supports IPv4, and one PDSN1 can communicate with multiple base stations to which it belongs. When the terminal (TE) accesses the base station (BTS), it has already determined the PDSN to be accessed in the next step. When a cell handover occurs, the terminal actively obtains the protocol type supported by the currently accessed PDSN, and then according to the IP currently reserved by the terminal, The address type and the protocol type supported by the currently accessed PDSN determine whether to trigger a new dial to ensure the continuity of data services. Refer to FIG. 3 for the interactive processing process between the terminal and each network element.

As shown in FIG. 3 , when cell reselection occurs, the terminal 302 sends an inquiry request of the type of IPv4/IPv6 currently supported by the network to the accessed base station 304 . After receiving the query request, the base station 304 feeds back the IP address types supported by the PDSN to the terminal 302 . After receiving the IP address type, the terminal 302 compares the reserved IP address type (the IP address type used in the previous dial-up) with the IP address type supported by the PDSN. If they are the same, there is no need to initiate a new dial-up process. If they are not the same, a new dialing process is initiated. The terminal initiates a point-to-point connection request to the packet service data node 306 according to the IP address type supported by the packet service data node 306, and the PDSN allocates a new IP address for the terminal to update the terminal's IP address type. The terminal 302 communicates with the application server 308 according to the new IP address, and performs socket data service transmission. Data transmission can be performed between the terminal 302 and the application server 308 through multiple socket transmission links. Assuming that the multi-task transmission of http web pages is performed between the terminal 302 and the application server 308, each socket link transmits part of the data, even if If a socket link is interrupted, the corresponding data can be retrieved again, while the rest of the links are transmitted normally. The impact on the user is that a part of a webpage is displayed first, and other parts are displayed after displaying, which will not cause the entire webpage content to be displayed. Consequences that cannot be displayed, thereby ensuring the continuity of data services and improving the online experience.

The terminal side can first understand the IP type of the current access network, and directly initiate a dial-up of the corresponding IP type. When a terminal is migrating between networks, the network element interacting with the terminal may not support the specified IP type. If the terminal dials up IPv6 and IPv4 types, the IPv6 address and IPv4 address will be obtained. According to the traffic migration criteria of the terminal, it will Migrate all the traffic to the IPv6 network, but if the network where the terminal is located changes at this time and migrates to a network that only supports IPv4, the connection still exists and the two IP addresses also exist, but the IPv6 address is no longer valid. , the terminal cannot obtain this situation, so the terminal will still communicate with the IPv6 address, as a result, the data packet cannot be recognized on the network that only supports IPv4, and the communication fails, and the technical solution of the present invention is used in this case , the terminal only needs to use the IPv4 address to communicate, and the communication can be realized by sending IPv4 data packets, without adding other network elements on the network side.

Fig. 4 shows a flowchart of a network switching control method according to an embodiment of the present invention.

As shown in FIG. 4 , in step 402, when a cell handover occurs in the terminal, the communication processor of the terminal reports the cell handover state to the application processor. Here, since the communication processor has a corresponding standard specification, it is inconvenient to make improvements. Therefore, the application processor can send a support protocol type acquisition request to the base station, and of course the communication processor can also directly send the acquisition request to the base station. Wherein, the communication processor is used to run the communication protocol, and the application processor is used to run the operating system such as the Android system, which is a logical division.

In step 404, the application processor of the terminal sends a request to the base station to acquire the IP address types supported by the currently accessed PDSN.

Step 406, receiving a request response from the base station.

Step 408, judge whether the IP address type supported by the accessed PDSN is consistent with the IP address type currently reserved by the terminal, if consistent, exit this processing flow, and if not, enter step 410.

Step 410, disconnect the current point-to-point connection, and perform a new dial-up according to the IP address type of the PDSN.

Therefore, the technical solution can automatically determine whether to enable the corresponding type of protocol stack in consideration of network environment change factors, so as to ensure that the terminal can fully use network resources and ensure that the terminal achieves the best user experience when surfing the Internet.

Fig. 5 shows a flow chart of a network switching control method according to another embodiment of the present invention.

As shown in Figure 5, the network handover control method according to the embodiment of the present invention may include the following steps: Step 502, when cell reselection occurs, obtain the IP address type supported by the access network; Whether the IP address type supported by the access network is the same as the currently used IP address type; step 506, when the judgment result is different, dialing is performed according to the IP address type supported by the access network. When cell reselection occurs on the terminal (the network environment has changed), it is determined whether to trigger a new dial-up according to the IP address type supported by the currently connected network and the currently obtained IP address type. When the two are found to be different, perform The IP address type is updated, and data transmission is performed according to the new IP address, so that the current data service can be continuously carried out, and the impact on the service data is minimized.

In the above technical solution, preferably, the step of obtaining the IP address type supported by the access network may include: sending a request to the base station to obtain the IP address type supported by the packet service data node; receiving the request from the base station Response, obtaining the IP address type supported by the packet service data node according to the request response. When the terminal accesses the base station, the PDSN to be accessed in the next step has been determined, so the terminal can obtain the IP address type of the packet service data node through the base station.

In any of the above technical solutions, preferably, when the judgment result is different and the terminal stores an IP address of the same type as the IP address supported by the access network, communication is performed according to the IP address. When the type specified by the terminal to initiate dialing is IPV4 and IPV6, it can obtain both IPV4 and IPV6 addresses at the same time. Assuming that the previously connected network is a V6 network, after switching to the V4 network, the IPV6 address becomes invalid, and the IPV4 address saved by the terminal is used. communicate directly.

If the IPV4 address is not within the address range specified by the V4 network, dial again to confirm the new IPV4 address. A manner of judging whether the IPV4 address is within the address range may be that the terminal feeds back the obtained IPV4 address to a corresponding network element PDSN for judging.

In any of the above technical solutions, preferably, when the judgment result is different and the terminal does not store an IP address of the same type as the IP address supported by the access network, the current point-to-point connection is disconnected, and the The packet service data node corresponding to the access network sends a new point-to-point connection request; obtains an IP address of the same type as the IP address supported by the packet service data node, and performs data transmission according to the new IP address. Since the previous IP address is invalid, you can disconnect the current point-to-point connection, re-initiate a new point-to-point connection, and dial according to the new IP address type.

In any of the above technical solutions, preferably, when cell reselection occurs, the communication processor in the terminal reports the network switching status to the application processor, and the application processor sends the request to the base station. It should be understood that the communication processor may also send to the base station to obtain the IP address type supported by the access network.

In any of the above technical solutions, preferably, it may further include: detecting the current data service status, and if it is detected that the service data cannot be transmitted, obtaining the IP address type supported by the packet service data node corresponding to the access network.

A packet service data node may be connected to multiple base stations. When the terminal switches connections between the base stations connected to the same packet service data node, its IP address type does not change, and there is no need to update the IP address type at this time. , the business data will not be affected by cell reselection, otherwise, the business data will not be able to be transmitted normally, and at this time it is necessary to update the IP address type, so when the business data is found to be abnormal, the IP address will be updated Type judgment, when the judgment result is inconsistent, redial is performed according to the new IP address type.

The technical solution according to the present invention has been described in detail above in conjunction with the accompanying drawings. The current operator's IPv6 network construction needs a long period of time to complete, and due to cost reasons, some networks will not support IPv6, and the V4 network and V6 network will be simultaneously Long-term coexistence, so there is a problem that the terminal switches between the v4 network and the v6 network. According to the previous solution, the IP address obtained by the terminal does not match the type of IP address supported by the network, resulting in the terminal being unable to transmit data, which seriously affects the user experience. However, after adopting the technical solution according to the present invention, the IP address type can be automatically updated, ensuring the continuity of the data service used by the user after switching.

In the above embodiments, IPv6 and IPv4 are taken as examples for explanation, and it should be noted that the present invention is also applicable to emerging protocol types.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A terminal, characterized in that, comprising: The acquiring unit acquires the IP address type supported by the access network when cell reselection occurs; A judging unit, configured to judge whether the IP address type supported by the access network is the same as the currently used IP address type; The dialing unit, when the judging result is different, dials according to the type of IP address supported by the access network. 2. The terminal according to claim 1, wherein the obtaining unit is further configured to send a request to the base station to obtain an IP address type supported by the packet service data node corresponding to the access network, and receive a request from the The base station responds to the request, and obtains the IP address type supported by the packet service data node according to the request response. 3. The terminal according to claim 1, wherein the communication unit of the terminal is configured to determine that the judgment result of the judging unit is different and the terminal stores an IP address supported by the access network When IP addresses of the same type are used, communication is performed based on the IP address. 4. The terminal according to claim 1, wherein the dialing unit is further configured to determine that the judgment result of the judging unit is different and the terminal does not save the IP address type supported by the access network For the same IP address, disconnect the current point-to-point connection, send a new point-to-point connection request to the packet service data node corresponding to the access network, and obtain the same IP address type supported by the packet service data node. Address, according to the new IP address for data transmission. 5. The terminal according to any one of claims 1 to 4, further comprising: The detecting unit is configured to detect the current data service state of the terminal, and if it is detected that the service data cannot be transmitted, notify the obtaining unit to obtain the IP address type supported by the packet service data node corresponding to the access network. 6. A network switching control method, characterized in that, comprising: Obtain the IP address type supported by the access network when cell reselection occurs in the terminal; Judging whether the IP address type supported by the access network is the same as the currently used IP address type; When the judging result is different, dialing is performed according to the IP address type supported by the access network. 7. The network switching control method according to claim 6, wherein the step of obtaining the IP address type supported by the access network comprises: Sending a request to the base station to obtain an IP address type supported by the packet service data node corresponding to the access network; Receive a request response from the base station, and acquire the IP address type supported by the packet service data node according to the request response. 8. The network switching control method according to claim 6, wherein when the judgment result is different and the terminal stores an IP address of the same type as the IP address supported by the access network, according to The IP address to communicate with. 9. The network switching control method according to claim 6, wherein when the judgment result is different and the terminal does not save an IP address of the same type as the IP address supported by the access network, the Open the current point-to-point connection, and send a new point-to-point connection request to the packet service data node corresponding to the access network; Obtain an IP address of the same type as the IP address supported by the packet service data node, and perform data transmission according to the new IP address. 10. The network switching control method according to any one of claims 6 to 9, further comprising: detecting the current data service state of the terminal, and if it is detected that the service data cannot be transmitted, obtaining the The IP address type supported by the packet service data node corresponding to the access network.

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