Multi-channel microwave resource dispatching method in wireless system of intelligent light carrier

Abstract

The invention provides a multi-channel microwave resource dispatching method in a wireless system of an intelligent light carrier, which mainly relates to the design of a measurement and control (MAC) layer protocol of a WALN network of a radio over fiber (RoF) system with millimeter waves of 60GHz and the dynamic dispatching of light waves and microwave resources in a wireless system of an intelligent light carrier. In order to relieve the influence of the time delay of optical fibers to an RoF WALN network of 60GHz, the invention provides a multi-channel microwave resource distributing method combining frequency-division multiplexing and time-division multiplexing, wherein the multi-channel microwave resource distributing method comprises two special control channels and a plurality of data channels. By the multi-channel design, the influence brought by the time delay of optical fibers in an RoF network is effectively relieved, the throughput of the system is enhanced, and smaller time delay and switching time are ensured. The RoF system of the microwave resource distributing method based on a plurality of channels can be used for carrying out unified dispatching on light waves and microwave resources in the network. Meanwhile, the demand distribution of the resources is also supported, so that the dynamic reconstruction of the network and the high-efficiency utilization of the resources are realized.

Description

technical field [0001] The present invention relates to a multi-channel microwave resource scheduling method in an intelligent radio-over-optical system, in particular to the design of a MAC layer protocol combining frequency division and time division in a WALN network of a 60GHz millimeter-wave RoF system, and the light wave and microwave in the RoF system A joint scheduling scheme for resources. Background technique [0002] Radio over Fiber (RoF) technology combines the characteristics of optical fiber and high-frequency radio wave transmission to realize large-capacity, low-cost radio frequency signal wired transmission and large-bandwidth wireless access. The RoF system generally includes three parts: a central office (CO, Central Office), an optical fiber link, and a base station (BS, Base Station). Because the base station of the RoF has a simple structure, it is also called a Remote Antenna Unit (RAU, Remote Antenna Unit). [0003] The RoF communication system mov...

AI Technical Summary

Problems solved by technology

[0017] 1. The RoF system requires a simplified base station structure. RAU only implements the most basic functions, and all logic processing and complex control functions are placed in the central station for unified scheduling.

This makes the resource allocation between wireless terminals cannot be completed in the cell (within the coverage of the RAU), but needs to communicate with the central station

This is quite different from the existing WLAN MAC protocol

[0018] 2. When the wireless terminal communicates with the central station, the control signaling will pass through a hybrid optical wireless network. Compared with the traditional WLAN MAC, this will bring a significant delay increase, which must be considered when designing the MAC protocol

[0020] The cells of the 4.60GHz network are small and the bandwidth is large, and user movement will cause frequent handover problems. Therefore, it is necessary to ensure a small handover delay time when designing the MAC protocol to reduce the impact of handover on users.

This makes it impossible for these nodes to self-manage

[0022] The HNT problem of the 60GHz wireless network refers to such a situation: the LOS connection is established between the RAU and each wireless user terminal, but the LOS requirements may not be met between each wireless user terminal

Images