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Band dynamic selecting and time scheduling method in heterogeneous network

A frequency band and time technology, applied in the field of dynamic selection of available frequency resources, can solve the problems of inability to achieve frequency resource sharing or coexistence, PBS interference, and CPE's inability to communicate.

Inactive Publication Date: 2009-09-09
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

In addition, the uplink data directed by CPE111 to CBS110 may also interfere with the communication of PBS101, PBS102 or PBS103
In this heterogeneous network environment, if the frequency band selected by the CBS is in an abnormal state, it will cause interference to one of the PBSs, not only cannot realize the sharing or coexistence of frequency resources, but also make the CPE served by the CBS unable to communicate, reaching Less than the purpose of heterogeneous fusion

Method used

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  • Band dynamic selecting and time scheduling method in heterogeneous network
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  • Band dynamic selecting and time scheduling method in heterogeneous network

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Embodiment Construction

[0071] Preferred embodiments of the present invention will be described herein below with reference to the accompanying drawings. In the following description, known functions and constructions are not described again since they would obscure the invention in unnecessary detail.

[0072] Before describing the present invention, the terms used herein are defined as follows:

[0073] Available frequency bands: refer to the idle frequency bands provided by PBS101, PBS102, and PBS103 respectively for use by CBS.

[0074] Detection report message: When the CPE detects a signal from a certain PBS or responds to an available frequency band, it is a detection report message sent from the CPE to the CBS.

[0075] The invention provides a method for enabling CBS to dynamically select an available frequency band, a method for predicting the existence of PBS, dynamic scheduling and detection time, and a time scheduling algorithm with QoS guarantee for CPE.

[0076] A. Dynamic selection ...

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Abstract

The invention provides a band dynamic selecting and time scheduling method in a heterogeneous network, relating to a method and equipment for dynamically selecting usable frequency resources in a plurality of main system bands in a heterogeneous network system based on the cognitive technology, in particular to a method and equipment used for opportunity spectrum access, frequency resource efficient utilization, and combination of heterogeneous network resource amalgamation and user business service quality (QoS) assurance. The invention has the band dynamic selecting method as follows: firstly, aiming to different main system characteristics, an average main system user detection threshold of each main system of a base station CBS accessory is defined and cognized, and the threshold is an average value of the prior detection threshold in a wireless network transmission environment; secondly, according to the average main system user detection threshold and the throughput needs of a secondary system user, scanning efficient time of CBS to each main system is defined; thirdly, the CBS selects the optimal main system band from a usable band list according to a request of a user, the wireless transmission characteristics and a channel state of a band channel are the basis for selecting the optimal band, and interruption of the equipment CPE transmission throughput is preset according to the user.

Description

technical field [0001] The present invention generally relates to a method and device for dynamically selecting available frequency resources in multiple primary system frequency bands in a heterogeneous network system based on cognitive technology, and more particularly relates to a method for opportunistic spectrum access and frequency A method and device for effectively utilizing resources, taking into account the integration of heterogeneous network resources and user service quality of service (QoS). Background technique [0002] The rapid development of communication technology and the emergence of wireless communication systems provide users with a heterogeneous network environment, including wireless personal area network, wireless local area network, wireless metropolitan area network, satellite network, Ad Hoc network and wireless sensor network. Provide users with a variety of communication methods, access means and ubiquitous access services. To realize true sel...

Claims

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Application Information

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IPC IPC(8): H04W16/10H04W28/24H04W72/02
Inventor 孙君朱洪波
Owner NANJING UNIV OF POSTS & TELECOMM
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