Route selection method of minimum hop count based on interference sensing in wireless D2D network

A network and routing technology, applied in the field of routing with minimum hops, can solve problems such as limiting the maximum transmission rate of D2D, affecting the communication quality of D2D links, and affecting the reception of cellular signals by base stations.

Inactive Publication Date: 2015-04-29
XI AN JIAOTONG UNIV
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Problems solved by technology

In the scenario of sharing the cellular uplink spectrum, D2D communication affects the reception of cellular signals by the base station, reducing the SIR (signa...

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  • Route selection method of minimum hop count based on interference sensing in wireless D2D network
  • Route selection method of minimum hop count based on interference sensing in wireless D2D network
  • Route selection method of minimum hop count based on interference sensing in wireless D2D network

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Embodiment Construction

[0049] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0050]In the system model used in the present invention, there are N D2D device nodes and several cellular users. The D2D nodes in this system communicate directly by sharing the uplink spectrum of the cellular network, so there is cross-interference between the D2D nodes and cellular users. In a D2D network, a source node and a destination node are defined to form a D2D communication pair. Due to the limited transmission power, the two nodes often need to establish a multi-hop route through other nodes to realize the communication from the source node to the destination node. Here, we assume that different communication pairs use different frequencies, and the D2D nodes on the same multi-hop route all use the same frequency. In this way, we only need to consider the interference between one D2D multi-hop route and one cellular user, such as figure 1 shown.

[00...

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Abstract

The invention provides a route selection method of minimum hop count based on interference sensing in a wireless D2D network. The method comprises the steps that (1) the emitting power of a D2D node is limited; (2) the highest transmission speed of each hop is computed, and a route optimization model of minimization route hop count is established; and (3) according to an MR-DA algorithm, a route from a source node to a target node is established hop by hop. Under the premise that cellular user communication quality and D2D transmission speed are guaranteed, the route with low hop count is established. By inspecting the highest transmission speed of a candidate node and the target node and the position relation of the candidate node, a current node and the target node, geographical location information and interference control are considered comprehensively, so that the generated router is close to the target node and far away from the base station at the same time, interference on cellular communication is lowered, and the transmission capacity of each hop is increased. Theoretical analysis and simulation results show that the method has the advantages that complexity is low, average hop count is low, and disconnecting probability is low.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a routing selection method based on interference-aware minimum hops in a wireless D2D network. Background technique [0002] In recent years, with the rapid development of wireless technology and the increasing intelligence of equipment, D2D (device-to-device) has attracted widespread attention as a local wireless communication technology that can provide high-quality communication between devices. The introduction of D2D technology into the communication system can improve the spectral efficiency and system capacity of the cellular network. When D2D nodes share cellular network resources in an underlay manner, cross-interference exists between D2D nodes and cellular users. In the scenario of sharing the cellular uplink spectrum, D2D communication affects the reception of cellular signals by the base station, reducing the SIR (signal-to-interference ra...

Claims

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Application Information

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IPC IPC(8): H04W40/08H04W40/16
CPCH04W40/08H04W40/16Y02D30/70
Inventor 杜清河许茜任品毅孙黎
Owner XI AN JIAOTONG UNIV
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