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Non-regenerative-relay-mode-based relay forwarding control method and device

A non-regenerative, relay node technology, applied in security devices, baseband system components, advanced technologies, etc., to achieve the effects of simple system structure, guaranteed security capacity, and reduced network signaling load

Active Publication Date: 2015-06-17
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a relay forwarding control method and device based on a non-regenerative relay mode, which solves how to use a non-regenerative relay mode to implement relaying under the premise of ensuring the confidentiality capacity of the system. forwarded question

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  • Non-regenerative-relay-mode-based relay forwarding control method and device

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] The invention is applicable to the relay selection, forwarding method and relay equipment of a single-source multi-relay system with eavesdropping terminals.

[0028] Such as figure 1 As shown, a control method for relay forwarding based on a non-regenerative relay mode of the present invention includes the following steps:

[0029] Step 110, determining the relay nodes in the service area to which the source node belongs;

[0030] According to the requirements of network planning, multiple relay stations are set up in the cellular system. Through signaling transmission, the source node determines the relay nodes in its service area, and takes these relay nodes as the relay nodes to be selected.

[0031] Step 120, each relay node calculates the channel information required for relay selection according to the obtained channel state in...

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Abstract

The invention discloses a non-regenerative-relay-mode-based relay forwarding control method and a non-regenerative-relay-mode-based relay forwarding control device. The method comprises that: each relay node in a service area with a source node calculates channel information required by relay selection according to obtained channel state information between the relay node and the source node and the obtained channel state information between the relay node and a destination node, and feeds the channel information back to the source node; and after receiving the channel information from the relay nodes, the source node selects a group of relay nodes with the highest numerical values in the fed-back channel information from each relay node to forward information, and selects a group of relay nodes with the second highest numerical values in the fed-back channel information to transmit interference information, and unselected relay nodes cooperates with the source node to transmit the information to the destination node in a non-regenerative relay mode. By the method and the device, network signaling load and computational complexity are greatly reduced, and the security capacity of a system is ensured at the same time; moreover, the system has a simple structure and high cost performance.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a control method and device for relay forwarding based on a non-regenerative relay mode. Background technique [0002] Due to the broadcast characteristics of the wireless transmission medium, all wireless terminals within the propagation range may receive information from the source node. In this way, the information originally sent from the source node to the target node may be eavesdropped by other nodes, resulting in a decrease in confidentiality and the inability to securely transmit the information. Therefore, the security of the wireless communication system has become a hot spot that people pay attention to. Existing researches on information security mostly focus on the research on the confidentiality protocol on the upper layer of the physical layer, that is, after encapsulating the data transmitted at the physical layer, the confidentiality prot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/00H04W40/22H04K1/02H04L25/02
CPCY02D30/70
Inventor 龙航旷婧华王方向张月莹郑侃王文博
Owner BEIJING UNIV OF POSTS & TELECOMM
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