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

A wireless access network and heterogeneous technology, applied in the field of layered heterogeneous wireless access network and the realization of layered heterogeneous wireless access network, can solve inter-cell interference, cannot generate, cannot improve layered wireless access network. Network access has the flexibility to support asymmetric services, and the spectrum efficiency of terminal services to achieve the effects of low feedback delay, improved dynamic performance and throughput.

Active Publication Date: 2012-06-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

Examples

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example 1

[0089] Example 1: Hierarchical heterogeneous wireless access network uses hybrid duplex SCS-HDD

[0090] Figure 4 It is a schematic diagram of a hierarchical heterogeneous radio access network using a hybrid duplex mode according to an embodiment of the present invention. Refer to Figure 4 To describe the processing in this example.

[0091] First, the wireless terminal completes the access to the service channel in the wireless node layer that uses the unpaired spectrum on the wireless node layer that uses the paired spectrum.

[0092] At time T1, the wireless terminal 103 completes cell synchronization on the spectrum (spectrum D) used by the wireless node 101 and obtains cell broadcast information issued by the spectrum. The cell broadcast information may include an indication of the availability of the service channel on spectrum B, for example, whether there are resources on spectrum B that can be used to separate service and control hybrid duplex;

[0093] At time T2, the wire...

example 2

[0099] Example 2: Hierarchical heterogeneous wireless access network uses half-duplex FDD, and inter-layer inter-node scheduling

[0100] Figure 5 It shows a schematic diagram of a layered heterogeneous radio access network using half-duplex FDD and inter-layer scheduling between nodes according to an embodiment of the present invention, such as Figure 5 As shown, the implementation process of this example can be described as follows:

[0101] At time T1, the wireless terminal uses the time slot 1 of the wireless frame on the spectrum U to send uplink scheduling request information and to the wireless nodes in the wireless node layer (first wireless node layer) using the paired spectrum and the wireless nodes using the unpaired spectrum. The wireless node signal measurement information in the wireless node layer (second wireless node layer) includes signal quality information for the wireless node 101 and the wireless node 102, for example, reporting signal measurement data for mu...

example 3

[0102] Example 3: Hierarchical heterogeneous wireless access network uses SCS-HDD mode, and uses inter-layer inter-node scheduling

[0103] Image 6 It is a schematic diagram of hierarchical heterogeneous wireless access network using hybrid duplex mode and intra-layer scheduling between nodes. Refer to Image 6 Describe the implementation process of this example.

[0104] At time T1, the wireless terminal uses the time slot 1 of the wireless frame on the spectrum U to send measurement information of the wireless node signal in the wireless node layer (the second wireless node layer) that uses the unpaired spectrum, for example, for adjacent two The measurement data of the signals of two wireless nodes 102a and 102b. At time T2, the wireless terminal receives downlink scheduling control command data from time slot 5 on spectrum D, and the received downlink scheduling control command is assigned to the wireless terminal using spectrum B The wireless node 102a uses the resources on...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/18H04W72/04H04B7/26
Inventor 刁心玺
Owner ZTE CORP
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