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Cooperative diversity technique-based seamless switching method

A technology of cooperative diversity and seamless handover, which is applied in the direction of preventing/detecting errors through diversity reception, wireless communication, electrical components, etc., which can solve the problems of high dependence on mobile prediction algorithms and long service interruption time, so as to reduce service interruption time. , the effect of reducing communication costs and improving system performance

Inactive Publication Date: 2012-10-03
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0006] In order to solve the above problems, especially the problems in the prior art that rely too much on the movement prediction algorithm during handover and the service interruption time in the handover process is long, the present invention proposes a handover management mechanism based on cooperative diversity

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  • Cooperative diversity technique-based seamless switching method
  • Cooperative diversity technique-based seamless switching method
  • Cooperative diversity technique-based seamless switching method

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Embodiment Construction

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0020] In order to achieve the purpose of the present invention, the present invention discloses a seamless handover method based on cooperative diversity technology, which includes the following steps: (a) When the receiving SINR of the main MN is lower than a predetermined threshold, the main MN passes Wi-Fi The interface selects one or more auxiliary MNs from neighboring MNs to form a handover cooperating set; (b) the main MN uses the cooperative diversity technology to transmit data frames through the handover cooperating set in the u...

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Abstract

The embodiment of the invention provides a cooperative diversity technique-based seamless switching method. The method comprises the following steps that: (a) when the received signal-noise-ratio of a main MN is less than a preset threshold value, the main MN selects one or more auxiliary MNs from neighboring MNs through a Wi-Fi interface to form a switching cooperation set; (b) the main MN transmits data frames through the switching cooperation set in uplinks and downlinks by using the cooperative diversity technique; and (c) the main MN realizes the seamless switching with the help of the switching cooperation set. The method has the advantages of prolonging the communication time between the MN and a source base station, reducing the service interruption time during the switching and effectively improving the system performance by using the cooperative diversity mechanism.

Description

technical field [0001] The invention relates to a handover method in mobile communication, in particular to a seamless handover method based on cooperative diversity technology. Background technique [0002] The handover management mechanism is the key technology to realize the next generation mobile communication system. Its performance parameters are mainly two aspects: the packet loss rate during the switching process and the service interruption time during the switching process. [0003] In terms of reducing service interruption time during handover, most of the existing handover mechanisms (such as FMIPv6, PHMIPv6, etc.) adopt the method of "preparation for handover in advance" to reduce service interruption time during handover. The handover mechanism based on advance handover preparation divides the handover process into handover preparation phase and handover execution phase. The handover preparation stage relies on a certain mobile prediction algorithm to predict...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/02H04W36/18H04W36/36
Inventor 洪佩琳铁晓磊薛开平唐浩
Owner UNIV OF SCI & TECH OF CHINA
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