WO2013113241A1

WO2013113241A1 - Multi-mode mobile terminal and method for load balancing

Info

Publication number: WO2013113241A1
Application number: PCT/CN2012/087505
Authority: WO
Inventors: 李建勇
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-02-02
Filing date: 2012-12-26
Publication date: 2013-08-08
Also published as: CN102595502A

Abstract

Disclosed are a multi-mode mobile terminal and method for load balancing. The load information of each network data link connected with the multi-mode mobile terminal is calculated; when socket connection is newly established, the network data link with the lowest load is determined according to the load information of each network data link, the newly established socket connection is bound to a network interface corresponding to the network data link with the lowest load; and the data of the newly established socket connection is received and sent through the network interface bound with the newly established socket connection. Applying the solution, the problem that a plurality of network interfaces of the multi-mode mobile terminal can not be fully used is solved, and when a plurality of network links of the multi-mode mobile terminal are concurrent, the data traffic load of each link is balanced.

Description

Multimode mobile terminal and method for load balancing

Technical field

The present invention relates to the field of mobile communications, and in particular to a multimode mobile terminal and method for load balancing. Background technique

The evolution and successful deployment of the Wireless Local Area Network (WLAN) has created a need to integrate with 3G mobile cellular networks such as TD-SCDMA, WCDMA, and CDMA2000. The main purpose of this convergence is to develop new ones. The mobile data network enables ubiquitous data services to be supported at very high data rates in hotspots, while mitigating the pressure on data traffic brought by large numbers of data services to 3G mobile networks. At present, the three major telecom operators in China have developed their own wireless local area network. Under the background that the fixed network and mobile convergence have become the development trend of the global telecom industry, the development of wireless LAN and other mobile networks will be integrated to support and develop new mobile data. Business is an inevitable choice, and the development of WLAN at the home level is also quite rapid. The terminal not only needs to have multiple wireless access capabilities, but also consider how to integrate the speed of the wireless local area network and the speed of the cellular network in a ubiquitous wireless local area network environment, and give full play to the speed advantage of the terminal multi-network interface. To meet the needs and objectives of users to get a better business experience.

With the development of intelligent terminal services, multi-network interface intelligent terminals are more and more inclined to concurrently transmit multiple data links, and terminals can send and receive data messages from different data links to maximize the speed advantage of multiple data links. However, the current TCP/IP protocol stack of the intelligent terminal system is not fully considered in the design of the multi-network interface. If the data packet sent and received by the data service is routed through the routing table, if it does not match the specified route, Both pass the highest priority default route.

When using the network interface to send and receive packets, the Internet data service uses the socket interface provided by the system TCP/IP protocol stack to perform connection establishment and data transmission. Some applications will first obtain an IP address, and then bind the socket to the local IP address through the bind function. However, the local IP address used by the socket to transmit data is eventually matched by the route in the IP protocol stack. The resulting data link is determined. When the multi-network interface intelligent terminal is concurrent with multiple data links, there is a data link that is matched with the default route with the highest priority, regardless of whether the socket responsible for the connection is bound to the local IP address. The problem of sending and receiving packets does not give full play to the speed advantage of the terminal multi-network interface. Summary of the invention

The technical problem to be solved by the present invention is to provide a load balancing multi-mode mobile terminal and method, which solves the problem that the multi-network interface of the multi-mode mobile terminal cannot be fully utilized.

In order to solve the above technical problem, the present invention provides a load balancing multi-mode mobile terminal, which includes a traffic calculation module, a load management module, and a route forwarding module;

The traffic calculation module is configured to: calculate load information of each network data link to which the multimode mobile terminal is connected;

The load management module is configured to: when the new socket connection is established, determine the lightest network data link according to the load information of the network data links obtained from the traffic calculation module, and the new The socket connection is bound to the network interface corresponding to the lightest network data link of the load; the route forwarding module is configured to: perform the new creation by using a network interface bound to the newly created socket connection Data connection for socket connection.

Preferably, the foregoing mobile terminal may further have the following features:

The load information refers to the data transmission speed of each data link and the maximum connection speed of the network interface. The lightest data link refers to the network data link with the smallest ratio of the data transmission speed to the maximum connection speed of the network interface.

The network data link includes a wireless local area network data link and/or a mobile cellular network data link.

The load management module is further configured to: bind the newly created socket connection with a local IP address corresponding to the lightest network data link; The routing and forwarding module is further configured to: maintain a correspondence between the network interface bound to the newly created socket connection and the local IP address. Preferably, the foregoing mobile terminal may further have the following features:

The load management module is further configured to: determine that the local IP address bound to the newly created socket connection is an invalid address, or there is no local IP bound to the newly created socket connection At the address, the newly created socket connection is bound to the local IP address corresponding to the lightest network data link.

In order to solve the above technical problem, the present invention provides a method for performing load balancing, in which load information of each network data link to which a multimode mobile terminal is connected is calculated; when a new socket connection is established, according to the foregoing The load information of the network data link determines the lightest network data link, and binds the newly created socket connection to the network interface corresponding to the lightest network data link of the load; The network interface bound by the connection connection performs data transmission and reception of the newly created socket connection.

Preferably, the above method may also have the following features:

The multi-mode mobile terminal binds the newly created socket connection with a local IP address corresponding to the lightest network data link, and maintains a network interface bound to the newly created socket connection. Correspondence with the local IP address.

Preferably, the foregoing method may further have the following feature: the multimode mobile terminal determines that the local IP address bound to the newly created socket connection is an invalid address, or does not exist with the newly created socket When the bound local IP address is connected, the newly created socket is connected to the local IP address corresponding to the lightest network data link of the load. Address binding.

The solution can solve the problem that the multi-network interface of the multi-mode mobile terminal cannot be fully utilized. When multiple network links of the multi-mode mobile terminal are concurrent, the load of each link data traffic is balanced. BRIEF abstract

1 is a schematic diagram of a load balancing method in an embodiment;

2 is a schematic structural diagram of a load balancing multimode mobile terminal in an embodiment;

FIG. 3 is a structural diagram of a load balancing multi-mode mobile terminal implemented on an Android platform in an embodiment.

Preferred embodiment of the invention

The multi-mode mobile terminal of the solution refers to a mobile terminal of FMC Fix-Mobile Convergence. Such mobile terminals can access both wireless local area networks and cellular mobile networks such as CDMA lx, CDMA evdo, GSM/GPRS, WCDMA, and TD-SCDMA. The mobile terminal can work on multiple network links at the same time. In this solution, the newly created socket connection is bound to the lightest network interface when the new Socket connection is established, thereby achieving multi-data link concurrency. When the data traffic of each link is load balanced.

The method for performing load balancing as shown in FIG. 1 includes: calculating load information of each network data link connected to the multi-mode mobile terminal; determining a load connection information of each network data link according to the load information of each network data link when creating a new socket connection The lightest network data link, the newly-connected socket connection is bound to the network interface corresponding to the lightest network data link; and the network interface bound by the newly created socket connection Perform data transmission and reception of the newly created socket connection.

The multi-mode mobile terminal binds the newly created socket connection with a local IP address corresponding to the lightest network data link, and maintains a network interface bound to the newly created socket connection. Correspondence with the local IP address. When the multimode mobile terminal determines that the local IP address bound to the newly created socket connection is an invalid address, or does not have a local IP address bound to the newly created socket connection, The newly created socket connection is bound to a local IP address corresponding to the lightest network data link.

In this solution, a flow calculation module (201) and a load management module (202) are added. As shown in FIG. 1, the load management module is connected to a route forwarding module (203) in the mobile terminal. As shown in Figure 3, the location of the new module in the Android platform.

a traffic calculation module (201), configured to calculate load information of each network data link to which the multimode mobile terminal is connected;

a load management module (202), configured to determine, according to the load information of each of the network data links, the load data of the network data link from the traffic calculation module to determine a network data link with the lightest load when the new socket connection is established, The socket connection is bound to the network interface corresponding to the lightest network data link of the load; the route forwarding module (203) is configured to perform the new connection by using a network interface bound to the newly created socket connection. Data connection for socket connection.

The load management module (202) is further configured to bind the newly created socket connection with a local IP address corresponding to the lightest load network data link; the route forwarding module (103) is further used to maintain and Corresponding relationship between the network interface bound to the newly created socket connection and the local IP address.

The load management module (203) is further configured to determine the local machine bound to the newly created socket connection

When the IP address is an invalid address, or if there is no local IP address bound to the newly created socket connection, the newly created socket connection corresponds to the lightest network data link of the load. The local IP address is bound. In this solution, the load balancing function can be enabled through the setting interface as the link preference function, and only one of them can be selected. The prerequisite for the implementation of the load balancing function is that the PS link and the WLAN link of the cellular network exist at the same time. The network application can send and receive network data packets through any link.

The invention will now be described in detail by way of specific examples.

Specific embodiment 1

Step 1 In the WLAN environment, the UE starts the WLAN module, scans the AP list, selects an available SSID, and connects. After the UE is associated with the AP, the network configuration is obtained. At the same time, the cellular network data connection also exists. The two data links are concurrent, prompting the user to enable the load balancing function. This function can be disabled through the interface configuration.

Step 2, the Internet-Capable application starts.

Step 3: Call the socket interface to create a socket connection, and get the socket descriptor sockstfd.

Step 4: The load management module invokes a flow calculation module interface function to obtain the current cellular and

The rate of data traffic on the two links of the WLAN, Sl, S2 (b/s), and the maximum theoretical connection speeds Smaxl, Smax2 (b/s) on the two network interfaces. The load management module calculates the load rates of the above two network interfaces Ldevl=Sl/Smaxl, Ldev2=S2/Smax2, and compares the network interface dev and the local IP address corresponding to the lower load rate. The load management module calls the bind function to bind socketfd to the above native IP address.

Step 5: The load management module binds socketfd to the network interface dev with low load rate, and calls the function setsockopt to complete this step.

Step 6. Socketfd sends and receives data through the TCP/IP protocol stack. When searching the routing table, it adds a lookup key, fixes the exit to dev, and keeps the local IP address bound by dev and socketfd.

Repeat steps 3 through 6 when the application creates multiple socket connections.

Repeat steps 2 through 6 when multiple applications are launched. Specific embodiment 2

Step 2, the Internet-Capable application starts.

Step 4. The above application calls the bind function to bind socketfd to the local IP address. The load management module checks whether the local IP address of the binding is a valid address. If the valid link IP address is bound, the network interface corresponding to the local IP address is obtained, and the socketfd is bound to the network interface name, and is sent and received. Data is sent to the socket connection data on this network interface; if the binding is not a valid link IP address, go to step 5;

Step 5: The load management module invokes the interface function of the traffic calculation module to obtain the rates S1, S2 (b/s) of the data traffic transmitted on the current two links of the cellular and WLAN, and the maximum theoretical connection speed Smaxl on the two network interfaces. Smax2 ( b/s ). The load management module calculates the load rates of the above two network interfaces Ldevl=Sl/Smaxl, Ldev2=S2/Smax2, and compares the network interface dev and the local IP address corresponding to the lower load rate. The load management module calls the bind function to bind socketfd to the above native IP address.

Step 6. The load management module binds socketfd to the network interface dev with low load rate, and calls the function setsockopt to complete this step.

Step 7: Socketfd sends and receives data through the TCP/IP protocol stack. When searching the routing table, a lookup key is added to fix the outgoing device to dev, and keep the local IP address bound by dev and socketfd.

Repeat steps 3 through 7 when the application creates multiple socket connections.

Repeat steps 2 through 7 when multiple applications are launched.

Take the Android dual-mode WLAN terminal as an example. When the link is concurrent, the newly created socket can be used. The connection will be bound to the light-duty network link, taking full advantage of the dual-mode WLAN terminal, effectively increasing the actual transmission rate of the dual-mode WLAN terminal and the maximum network rate that can be achieved, achieving the objectives of this patent.

It should be noted that the features in the embodiments and the embodiments of the present application may be arbitrarily combined with each other without conflict. It is a matter of course that the invention may be embodied in various other forms and modifications without departing from the spirit and scope of the invention.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program instructing the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

Industrial Applicability This solution can solve the problem that the multi-network interface of the multi-mode mobile terminal cannot be fully utilized. When multiple network links of the multi-mode mobile terminal are concurrent, the load of each link data traffic is balanced.

Claims

Claim

1. A load balanced multimode mobile terminal, wherein

The utility model includes a flow calculation module, a load management module and a route forwarding module;

2. The mobile terminal of claim 1, wherein

3. The mobile terminal of claim 1, wherein

4. The mobile terminal of claim 1, wherein

The load management module is further configured to: bind the newly created socket connection to a local IP address corresponding to the lightest network data link;

The routing and forwarding module is further configured to: maintain a correspondence between the network interface bound to the newly created socket connection and the local ip address.

5. The mobile terminal of claim 4, wherein

6. A method for performing load balancing, wherein

Calculating load information of each network data link connected to the multi-mode mobile terminal; determining a lightest network data link according to load information of each network data link when establishing a new socket connection, The newly created socket connection is bound to the network interface corresponding to the lightest network data link of the load;

Data transmission and reception of the newly created socket connection is performed through a network interface bound to the newly created socket connection.

7. The method of claim 6, wherein

8. The method of claim 6, wherein

9. The method of claim 6, wherein

10. The method of claim 9, wherein

When the multimode mobile terminal determines that the local IP address bound to the newly created socket connection is an invalid address, or does not have a local IP address bound to the newly created socket connection, The newly created socket connection is bound to a local IP address corresponding to the lightest network data link.