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A Rate Adaptive Selection Method for Time-varying Channels

A rate-adaptive, time-varying channel technology, applied in the direction of adjustment of transmission rate, transmission path sub-channel allocation, signaling allocation, etc., can solve the problem of not being able to quickly find the optimal transmission rate

Active Publication Date: 2022-07-22
南京海骅信息技术有限公司
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Problems solved by technology

This method cannot quickly find the optimal sending rate, especially in the face of many available rates or rapidly changing channels

Method used

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  • A Rate Adaptive Selection Method for Time-varying Channels
  • A Rate Adaptive Selection Method for Time-varying Channels
  • A Rate Adaptive Selection Method for Time-varying Channels

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Embodiment Construction

[0040] The technical content of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041]The rate adaptive selection method provided by the present invention is used for continuously changing channels, and the sending station uses the existing channel state information to select an appropriate sending rate to send data packets to the receiving station. In addition, the received signal strength indication information and the acknowledgement character / nack character information fed back by the physical layer and the medium access control layer are used to track the change of the channel. The transmitting station generally refers to the base station. The receiving station generally refers to a wireless communication terminal such as a mobile phone and a tablet computer used by the user. The user transmits data alternately by dividing the time slot between the built-in antenna of the mobile phone ...

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Abstract

The invention discloses a rate adaptive selection method for time-varying channels. The rate adaptive selection method includes the following steps: Step S1: Select an appropriate transmission rate according to the initial channel interaction information to start sending data packets to the receiving station; Step S2: Receive the confirmation character / negative character information fed back by the receiving station, and measure to obtain Received signal strength indication information; Step S3: Update the relationship between the received signal strength indication information and the transmission rate according to the feedback acknowledgment character / denial character information; Step S4: According to the measured received signal strength indication information, and the updated signal strength The relationship between the indication information and the sending rate, select the sending rate of the next time slot to send the data packet to the receiving station. The rate adaptive selection method enables the sending station to adaptively adjust the sending rate when sending data packets to the receiving station, and ensures that the optimal sending rate can be selected at every moment.

Description

technical field [0001] The present invention relates to a rate adaptive selection method for a time-varying channel (hereinafter referred to as a rate adaptive selection method), which belongs to the technical field of wireless communication. Background technique [0002] In wireless communication systems, high throughput has always been a necessary indicator. The sending station needs to obtain channel state information (Channel State Information, CSI) accurately to select an appropriate sending rate to achieve the maximum throughput. However, it is not realistic to obtain timely and accurate channel state information feedback in an actual system. The transmitting station needs to use the existing channel state information to select an appropriate transmission rate to achieve the maximum throughput. This method is called rate adaptive selection algorithm. (Rate Adaptation, RA). [0003] The rate adaptive selection algorithm should use the available information about the c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L5/00
CPCH04L1/0002H04L1/0026H04L5/0055
Inventor 钱骅王海峰金圣峣
Owner 南京海骅信息技术有限公司
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