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A spectrum access method with QoS guarantee for licensed users and cognitive users based on power allocation

A technology of recognizing users and authorizing users, applied in the field of cognitive radio communication, can solve problems such as user QoS not being guaranteed, and achieve the effect of guaranteeing QoS

Active Publication Date: 2018-11-20
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0004] Aiming at the defects in the existing coexistence spectrum access method and solving the problem that the QoS of one user cannot be guaranteed, the present invention provides an authorized user and cognitive user based on power allocation that can simultaneously guarantee the QoS of the authorized user and the cognitive user. Spectrum Access Method for User QoS Guarantee

Method used

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  • A spectrum access method with QoS guarantee for licensed users and cognitive users based on power allocation
  • A spectrum access method with QoS guarantee for licensed users and cognitive users based on power allocation
  • A spectrum access method with QoS guarantee for licensed users and cognitive users based on power allocation

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings.

[0049] refer to Figure 1 ~ Figure 3 , a spectrum access method with QoS guarantee for licensed users and cognitive users based on power allocation. The radio communication system includes a main system and a cognitive system, wherein the main system includes an authorized user sending end and an authorized user receiving end, the cognitive system includes a cognitive user sending end and a cognitive user receiving end, and the authorized user The known system can simulate the radio protocol and system parameters of the main system; the main system supports the relay function and has a licensed spectrum;

[0050] In the method of this embodiment, the cognitive user accesses the spectrum of the authorized user in a decoding and forwarding cooperative manner, and after receiving the information sent by the authorized user, the cognitive user uses a part of power to forw...

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Abstract

A spectrum access method with QoS guarantee for authorized users and cognitive users based on power allocation. In this method, cognitive users access the spectrum of authorized users through decoding and forwarding cooperation; if both authorized users and cognitive users can achieve The cognitive user will access the spectrum of the licensed user; after the cognitive user accesses the spectrum of the licensed user, use part of the power to forward the information of the licensed user to help it reach the target rate, and then use the remaining power to send its own Information reaches the target rate. The invention can simultaneously ensure that authorized users and cognitive users can achieve their own QoS.

Description

technical field [0001] The invention belongs to the technical field of cognitive radio communication in the field of wireless communication, in particular to a frequency spectrum access method. Background technique [0002] With the rapid development of wireless technology, more and more terminals are connected to the network through wireless means, and limited spectrum resources are continuously authorized to be used by various communication systems, resulting in increasingly tight spectrum resources. However, the US Federal Communications Commission (FCC) survey shows that the current utilization of wireless spectrum resources is extremely low, and the spectrum utilization is very unbalanced, of which frequencies above 3G are hardly used; the average spectrum utilization of frequency bands below 3G is only 6%. It can be seen that some licensed frequency bands are often idle, while some unlicensed frequency bands are highly competitive. In order to ensure the long-term sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W72/04
CPCH04W16/10H04W72/0473H04W72/53
Inventor 卢为党吴佳颖王梦云朱玉飞彭宏
Owner ZHEJIANG UNIV OF TECH
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