Relay coverage selection algorithm based on millimeter-wave high-speed communication
A technology of high-speed communication and selection algorithm, which is applied in wireless communication, access restriction, electrical components, etc., and can solve problems such as the inapplicability of millimeter-wave high-speed systems and the difficulty of obtaining precise locations of mobile devices
Inactive Publication Date: 2015-06-17
SOUTHEAST UNIV
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[0007] The above algorithms are all based on accurate location information, but in the millimeter wave high-speed wireless network, the precise location of the mobile device is difficult to obtain, so the above algorithms are not suitable for the millimeter wave high-speed system
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[0040] Embodiment: The application scenario in this embodiment is an application scenario of ultra-high-speed wireless personal area network - home theater, such as figure 1As shown, the 60GHz wireless network contains a main control device PCP / AP as the main coordinator and 8 devices. The transmit power of the device is 10dBm, the gain of the transmit antenna and the gain of the receive antenna are both 10.1915dBi, and the signal wavelength is 5mm. The channel bandwidth is 2GHz, MCS11 in IEEE802.11ad is adopted, the receiving sensitivity is -54dBm, and the link loss index ρ=2. The source device S and the destination device D communicate on the channel, and then someone passes between the source device S and the destination device D, causing the LOS link between the source device S and the destination device D to be interrupted. figure 1 The black vertical line in the middle indicates the area where obstacles are located, and STAs are other alternative relay devices.
[0041]...
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The invention discloses a relay coverage selection algorithm based on millimeter-wave high-speed communication. The method comprises the following steps: establishing a polar coordinate system by taking a PCP / AP as a coordinate origin; averagely partitioning the polar coordinate system into a plurality of sectors for scanning to obtain the distances between the sector of each piece of equipment as well as each piece of equipment and the PCP / AP and obtain the public coverage areas of two pieces of communication equipment; meanwhile, estimating the probable blocking range of an obstacle, wherein the residual part is a range with credibility of relay equipment; searching for all alternative equipment satisfying a credibility range condition; and searching from the alternative equipment of which the sectors satisfy the credibility range condition in sequence on the basis of a chain equivalent optimal rate screening method. According to the relay coverage selection algorithm, the public coverage range of communication equipment and the probable blocking range of the obstacle are calculated, the range of the relay equipment with credibility is obtained, equipment which is accordant with the relay equipment rate condition is searched from the alternative equipment in sequence for serving as a relay node, the problem that a millimeter-wave communication network is influenced easily by obstacles is solved, and the smoothness of a high-speed wireless transmission link is ensured.
Description
technical field [0001] The invention relates to the technical field of ultra-high-speed wireless personal area network communication, in particular to a relay coverage selection algorithm based on millimeter-wave high-speed communication. Background technique [0002] WPAN is a short-distance (less than 10 meters) communication wireless network that connects devices such as personal computers, printers, storage devices, digital cameras, and high-definition digital televisions (High Definition Television, HDTV). Some application scenarios have higher requirements on the transmission rate, such as an application scenario of ultra-high-speed wireless personal area network - home theater, due to uncompressed high-definition video and large-capacity data files (such as high-definition pictures, lossless music, etc.) Bits per second (Gbps)-level transmission speed, while the current wireless personal area network and wireless local area network technologies (such as UWB (Ultra Wid...
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IPC IPC(8): H04W16/26H04W48/16
Inventor 徐平平卫淼褚宏云杨娟
Owner SOUTHEAST UNIV