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LAA (License Assisted Access) licensed channel and unlicensed channel dynamic distribution method and system

A technology of authorized channel and dynamic allocation, which is applied in wireless communication, network traffic/resource management, electrical components, etc. It can solve problems such as unauthorized channel conflicts, affect users, reduce system energy efficiency, etc., and achieve the effect of improving market acceptance

Active Publication Date: 2017-06-13
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With the intensive deployment of SBS systems and the dynamic changes in the number of WiFi, the interference problem of authorized channels and the conflict problem of unlicensed channels will become more serious, which will seriously affect the QoS (quality of service, user service quality) of users and reduce the energy efficiency of the system.

Method used

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  • LAA (License Assisted Access) licensed channel and unlicensed channel dynamic distribution method and system
  • LAA (License Assisted Access) licensed channel and unlicensed channel dynamic distribution method and system
  • LAA (License Assisted Access) licensed channel and unlicensed channel dynamic distribution method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0069] Assume that the scene layout configuration is a macro cell with a radius of 260 meters, and there are 8 SBSs randomly and evenly distributed in the coverage area of ​​the macro base station, and each SBS has 10 SUEs and 5 WiFi nodes. Each SBS has a total of 6 licensed channels and 8 unlicensed channels for optional allocation. Assume that the network is not in danger of being overloaded at this time, the number of SUEs and traffic are within the safe value range, and the channel resources are sufficient. When providing services to SUEs of these 10 different QoS service types, the specific process of dynamic channel allocation is as follows (wherein M=10, N 1 =6, N 2 =8):

[0070] When these 10 SUEs send service requests to the SBS, the DAC (Dynamic Allocation Controller, controller) access control unit makes the most appropriate access decision according to its high QoS characteristics. At this time, the channel resources of the LAA system are sufficient, and they ar...

Embodiment 2

[0075] Assuming that the scene layout configuration is a macro cell with a radius of 260 meters, there are 8 SBSs randomly and evenly distributed in the coverage area of ​​the macro base station, and each SBS has 20 SUEs and 5 WiFi nodes. Each SBS has a total of 6 orthogonal authorized channels and 8 unlicensed channels for optional allocation. Assume that at this time the network has too many SUEs (Smallcell User Equipment, small cell users), the service volume increases, and the channel resources are insufficient. When multiple SUEs with high QoS requirements require services, the specific process of dynamic channel allocation by the SBS is as follows (wherein M=20, N 1 =6,N 2 =8):

[0076] When 20 SUEs with different QoS requirements send service requests to SBS, the DAC access control unit makes appropriate access decisions according to the user's service types and channel conditions. At this time, the channel resources of the LAA system are insufficient to serve all us...

Embodiment 3

[0081] Embodiments of the present invention also show a dynamic allocation system for LAA authorized channels and unauthorized channels, such as Figure 5 As shown, including SUE channel interference conflict table and SUE channel rate table dynamic update module, SBS channel allocation dynamic update module and MBS channel allocation correction module;

[0082] The SUE channel interference conflict table and the SUE channel rate table dynamic update module are used to periodically and dynamically update the SUE user measurement information and channel availability information, generate the SUE available channel list, and obtain the periodically updated SUE channel interference conflict table and SUE channel rate table ;

[0083] The SBS channel allocation dynamic update module is used for the information of the SBS channel interference conflict table and the SBS channel rate table to obtain the SBS primary channel allocation table; and the SBS primary channel allocation table...

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Abstract

The invention provides an LAA (License Assisted Access) licensed channel and unlicensed channel dynamic distribution method and system. The method comprises the steps of S1, setting a plurality of SBSs (LAA-enabled small base stations) in a coverage range of an MBS (Macro Base Station), periodically and dynamically updating SUE (Smallcell User Equipment) user measurement information and channel availability information in the SBSs, generating a SUE available channel list, and obtaining a SUE channel interference conflict table and a SUE channel rate table which are updated periodically; S2, under the condition of ensuring the QoS (Quality of Service) of the SUE channels, obtaining a SBS primary channel distribution table according to the information of the SUE channel interference conflict table and the SUE channel rate table; and S3, correcting the SBS primary channel distribution table by the MBS, and distributing channels to the SUE by the SBSs according to a corrected dynamic channel distribution table. Through combination of the network condition, on the premise of weighing the interference and conflicts for original LTE (Long Term Evolution) and WiFi systems, the global optimization of the quality of service of the SUE is realized, and the market acceptability of the LAA system is improved.

Description

technical field [0001] The present invention relates to the technical field of heterogeneous wireless network communication, and more specifically, to a method and system for dynamically allocating LAA authorized channels and unauthorized channels. Background technique [0002] The explosive growth of smart devices and mobile data traffic has led to scarcity of spectrum resources, which hinders further capacity enhancement of wireless communication systems. LTE (Long Term Evolution, Long Term Evolution) licensed channel resources are scarce, which can easily cause problems such as poor network service quality in hotspot areas. To fundamentally solve these problems, LAA (License Assisted Access) technology utilizes unlicensed channels with sufficient bandwidth and uses LTE network technology in unlicensed channels based on carrier aggregation architecture to provide users with high-quality services. [0003] Due to the characteristics of the unlicensed channel, there are mul...

Claims

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Application Information

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IPC IPC(8): H04W28/20H04W28/24H04W72/04H04W72/08H04W72/12
CPCH04W28/20H04W28/24H04W72/0453H04W72/54
Inventor 崔琪楣江慧谷宇李震
Owner BEIJING UNIV OF POSTS & TELECOMM
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