Neighbor discovery method and device

Abstract

The invention discloses a neighbor discovery method and a device which are used from the user mobile terminal device and the user mobile terminal device communication system. The communication system comprises a plurality of eNode Bs and a plurality of user mobile terminal devices. The neighbor discovery method comprises steps of receiving the system information of the system of the corresponding eNode Bs from the plurality of the eNode Bs at each user mobile terminal device of the plurality of user mobile devices, wherein the system information comprises the configuration information for indicating how the plurality of neighbor discovery channels are configured in the wireless resources, selecting the corresponding neighbor discovery channel from the plurality of neighbor discovery channels based on the configuration information in the system information at each user mobile terminal device, transmitting the corresponding beacon signals (eg. neighbor discovery signals) on the selected neighbor discovery channel at each user mobile terminal device, and receiving the beacon signals from the neighbor user mobile terminal device of the user mobile terminal device on the unselected neighbor discovery channel. The neighbor discovery method and the device can achieve good detection performance.

Description

technical field [0001] Embodiments of the present invention relate to the field of user mobile terminal equipment-to-user mobile terminal equipment communication, and more specifically relate to a neighbor discovery method and device for a user mobile terminal equipment-to-user mobile terminal equipment communication system. Background technique [0002] In recent years, wireless communication applications and services based on proximity have received more and more attention. Proximity-based user mobile device-to-user mobile device (D2D) communication can greatly improve spatial spectrum efficiency (due to the small communication range), and can also obtain one-hop gain from direct communication (due to no need for forwarding via the base station). Inspired by these advantages, 3GPP has recently created a research project for D2D communication. D2D communication is expected to become an important part of the future wireless broadband communication system, and together with ...

AI Technical Summary

Problems solved by technology

The neighbor discovery scheme based on compressive sensing proposed in Document 1 has the following disadvantages: (1) Each node must have information about the discovery sequence matrix (including the sequences of all nodes), which will occupy a large signaling overhead; ( 2) Neighbor discovery complexity increases as the number of nodes increases, which will bring greater computational complexity, especially when the number of nodes is very large; (3) The design of pseudo-random on-off signals requires frequent sending and receiving (TX / RX) switching, which will make the implementation of the scheme more complicated

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