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Method and device capable of judging whether terminal is switched between two wireless networks

A wireless network and terminal technology, applied in the field of judging whether the terminal switches between two wireless networks, can solve the problem of increasing terminal power consumption

Active Publication Date: 2013-04-24
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Frequent switching between networks makes the terminal continuously initiate signal interaction with network devices, which not only increases the power consumption of the terminal, but also brings additional network resource overhead

Method used

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  • Method and device capable of judging whether terminal is switched between two wireless networks
  • Method and device capable of judging whether terminal is switched between two wireless networks
  • Method and device capable of judging whether terminal is switched between two wireless networks

Examples

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no. 1 example

[0061] figure 2 It is a schematic flowchart of the first embodiment of the determination method of the present invention. Refer below figure 2 As shown, the specific implementation manner of this embodiment is described in detail.

[0062] First, in step S21A, it is determined whether the signal strength of the first wireless network at the location of the terminal that has accessed the first wireless network satisfies the first handover condition, if the signal strength of the first wireless network does not meet the first handover condition, then It is determined that the terminal continues to communicate through the first wireless network.

[0063] The signal strength of the wireless network is the primary factor reflecting the quality of the wireless link. The wireless network signal is a spatial radio frequency signal, which is easily interfered. Therefore, the signal strength of the wireless network is used as the primary condition for judging whether the In the cas...

no. 2 example

[0072] In the above embodiments, the signal strength of the wireless network is used as the first factor to be judged before handover. However, the wireless channel has a high bit error rate, complex channel fading, and network equipment noise. These factors make the ability of the signal strength to reflect the link quality very limited. By judging the connectivity between the terminal and the wireless network , then it is possible to more accurately determine whether to perform network switching, and to avoid the wireless network after switching being unusable due to factors of wireless network connectivity when the terminal is switching, thereby switching again. see below image 3 As shown, the second embodiment of the method of the present invention is introduced. In this embodiment, the judgment on the connectivity between the terminal and the wireless network will be further increased, and the phenomenon of ping-pong switching between different networks will be further ...

no. 3 example

[0089] Figure 4 It is a schematic flow chart of the third embodiment of the method of the present invention. In this embodiment, the first wireless network may be a wireless local area network, and the second wireless network may be a CDMA 1X network or a CDMA 1X EVDO network. Specifically, the first threshold is A, and the first switching condition is that the average value of the signal strength of the wireless local area network at the location of the terminal within the second time period is smaller than the first threshold A. The third threshold is B, and the third switching condition is that the average value of the signal strength of the wireless local area network at the location of the terminal within the second time period is less than the third threshold B, where B is less than A. The second threshold is D, and the second handover condition is that the number of handovers of the terminal between the wireless local area network and the CDMA network is less than the...

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Abstract

The invention discloses a method and a device capable of judging whether a terminal is switched between two wireless networks. The method comprises the following steps: judging whether the signal intensity of a first wireless network on the position of the terminal which is accessed to the first wireless network satisfies a first switching condition, if does not satisfy, judging not to switch; otherwise, judging whether the switching times in a first period satisfy a second switching condition, if does not satisfy, judging not to switch, and otherwise judging the terminal to be switched. The invention further discloses a method capable of judging whether the terminal is switched from the second wireless network to the first wireless network, and the device capable of judging whether the terminal is switched between the two networks. The signal strength is used as a first condition to judge whether the terminal is switched between networks, when the switching conditions are satisfied, the switching times in unit time are used for deciding whether to be switched, so that the ping-pong switching phenomena between different networks are reduced, and energy consumption and network source cost brought by the terminal are reduced.

Description

technical field [0001] The present invention relates to wireless network technology, in particular to a method and equipment for judging whether a terminal switches between two wireless networks. Background technique [0002] With the development of wireless communication technology, Code Division Multiple Access (CDMA) technology, including CDMA 1X and CDMA 1X EVDO (Evolution Data Only), has become one of the most widely used wireless communication technologies at present. Among them, CDMA 1X technology, as the first stage of CDMA2000, can carry both voice services and packet data, so as to provide users with both traditional voice services and data services in end-to-end packet transmission mode, and provide Internet access. CDMA 1X EVDO technology is an enhanced method for CDMA 1X in providing data services. It is a CDMA2000 control interface technology optimized for high-speed packet data transmission, and its maximum transmission rate reaches 2Mbps. CDMA 1X EVDO can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/30
CPCY02B60/50Y02D30/70
Inventor 沈骁邵震张正风孙智强
Owner CHINA TELECOM CORP LTD
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