Layering isomeric wireless access network system and realization method for layering isomeric wireless access network

Abstract

The invention discloses a layering isometric wireless access network system and a realization method for a layering isometric wireless access network. The system comprises a first wireless node layer using paired spectrums, a second wireless node layer using unpaired spectrums, a resource management and duplex control unit, a node dispatch control unit, a baseband processing unit and a wireless terminal, wherein the first wireless node layer comprises one or more first wireless nodes using the paired spectrums; the second wireless node layer comprises a plurality of second wireless nodes using the unpaired spectrums; the resource management and duplex control unit is used for managing and allocating the paired spectrums and the unpaired spectrums and controlling the first wireless nodes and the second wireless nodes to communicate with the wireless terminal in a mixed duplex mode of separated service and control; the node dispatch control unit is used for performing dispatching between the nodes on the wireless terminal; the baseband processing unit is used for performing baseband processing on signals from and / or sent to the first wireless nodes and / or the second wireless nodes; and the wireless terminal is operated on the spectrums used by the first and second wireless nodes.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a layered heterogeneous wireless access network and a method for realizing the layered heterogeneous wireless access network. Background technique [0002] In order to improve the service capability of the network and use the frequency spectrum reasonably, the hierarchical mobile communication access network architecture is being applied more and more widely. The collaboration between the third generation mobile communication system and the wireless local area network is an application example of the layered wireless access network architecture. At present, the layered wireless access network, as a candidate architecture of the IMT-Advanced system, is widely used in related research fields. attention and research. [0003] Make wireless access points (or base stations) working in lower frequency bands (for example, lower than 3GHz) undertake large-area coverage and ...

AI Technical Summary

Problems solved by technology

[0006] Although the above-mentioned transmit diversity and receive diversity technologies can improve the spectral efficiency of the system in a light-load state, and even in principle, this technology can comprehensively use the spectrum resources of macro cells and micro cells to jointly support high-speed mobile terminals. However, this The inventors of the application found that this technology has at least the following disadvantages: it affects the frequency reuse mode of the cellular system, generates additional inter-cell interference, and the comprehensive spectrum efficiency is not high in point-to-point services

[0008] The inventors of the present application found that the above method has at least the following disadvantages: the use of control channels has not been improved from the level of evolution of the more basic duplex mode, and the overall performance of the layered wireless access network has not been greatly improved.

[0011] To sum up, in the current layered wireless access network architecture and related working methods, there are the following problems that need to be solved: the use of control channels has not been improved from the level of evolution of the more basic duplex mode, although In the prior art, for example, US Patent Application No. US5,546,443 discloses "A Hierarchical Wireless Access System and Working Method", and also proposes the separation of control channels and traffic channels in a hierarchical access network , but this separation is only the separation of the traffic channel and the control channel in the paired or non-paired frequency spectrum used by the same system, and the separation of the traffic channel and the control channel is not performed between the paired and non-paired frequency spectrum. Therefore, Existing technologies cannot produce the effect of allowing business data to utilize the reciprocity of unpaired spectrum and its flexibility for asymmetric services, while allowing control channels to utilize the low delay of paired spectrum, and cannot improve hierarchical wireless networks. The flexible support capability of the access network for asymmetric services and the spectrum efficiency for terminal services under high-speed mobility; while the existing FDD system and TDD system complement each other only for traditional TDD and FDD duplex methods Combination, does not solve the basic problems of traditional TDD and FDD methods

In addition, the current inter-layer cooperation is based on the inter-layer switching technology, and does not use the intra-layer and inter-layer inter-node scheduling technology with better dynamic performance.

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