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D2D (Device-to-Device) communication power distribution and relay selection method based on network coding

A technology of network coding and power, applied in the field of wireless communication, to achieve the effect of large channel capacity

Active Publication Date: 2017-05-17
XIDIAN UNIV
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Problems solved by technology

For the system scenario where cellular users act as two-way relay nodes, the current existing technology does not combine D2D communication, relay transmission technology and network coding under the premise of comprehensively considering the communication quality requirements of cellular links and D2D links. Design a complete power allocation and relay selection method to further effectively expand the advantages of D2D communication

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  • D2D (Device-to-Device) communication power distribution and relay selection method based on network coding
  • D2D (Device-to-Device) communication power distribution and relay selection method based on network coding
  • D2D (Device-to-Device) communication power distribution and relay selection method based on network coding

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[0032] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] like figure 1 As shown, the network coding-based D2D communication power allocation and relay selection method provided by the embodiment of the present invention includes the following steps:

[0035] S101: Perform optimal power allocation for each candidate relay node;

[0036] S102: Select the relay node that can maximize the channel capacity of the D2D link as the best relay node.

[0037] The application principle of the present invention will be further described below ...

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Abstract

The invention belongs to the technical field of wireless communication and discloses a D2D (Device-to-Device) communication power distribution and relay selection method based on network coding. The D2D communication power distribution and relay selection method comprises the following steps: carrying out optimal power distribution on each standby relay node; and selecting a relay node capable of enabling the capacity of a D2D link channel to be the greatest as an optimal relay node. According to the D2D communication power distribution and relay selection method, the network coding, a relay technology and D2D communication are combined, so that the frequency spectrum utilization rate of a mixed network can be realized by relatively low cost, and the network coverage and service quality problems are solved; optimal power distribution is carried out on the node on a terminal straight-through link under the condition that the total emission power of the terminal straight-through link is certain, aiming at a system scene which takes a cellular user as a bidirectional relay node, so that the optimal relay node is selected; and compared with other power distribution and relay selection algorithms, the channel capacity of the terminal straight-through link can reach the maximum.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a D2D communication power distribution and relay selection method based on network coding. Background technique [0002] In order to ensure the communication quality and security of local services, the Third Generation Partnership Project (the third Generation Partner Project, 3GPP) applies the Device-to-Device (D2D) technology as the underlying network to the cellular network. The Committee (International Telecommunications Union-Radio Communications Sector, ITU-R) listed D2D as one of the key technologies for future wireless communications to increase the spectrum utilization efficiency of the system, reduce the load on the base station, reduce the transmit power of the terminal and the base station, and increase the overall channel capacity. . However, when the channel between D2D users undergoes deep fading or the spatial distance suddenly becomes ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/22H04W52/24H04W52/26H04W52/46H04L1/00H04W4/00
CPCH04L1/0077H04W40/22H04W52/243H04W52/267H04W52/46H04W4/70Y02D30/70
Inventor 郭漪吕昱萱刘刚
Owner XIDIAN UNIV
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