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Method of jointly fixing automatic request retransmission and scheduling algorithm based on terminal feedback

A scheduling algorithm, hybrid automatic technology, applied in transmission systems, digital transmission systems, error prevention/detection using return channels, etc., can solve the problems of real-time retransmission packet discarding, etc., to enhance self-adaptation and increase self-adaptation Features, Effects that Reduce Influence

Inactive Publication Date: 2010-04-21
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, the current protocol does not support these, and it is very likely that a large number of real-time retransmission packets cannot be correctly transmitted to the receiving end within the specified time, resulting in packet discarding

Method used

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  • Method of jointly fixing automatic request retransmission and scheduling algorithm based on terminal feedback
  • Method of jointly fixing automatic request retransmission and scheduling algorithm based on terminal feedback
  • Method of jointly fixing automatic request retransmission and scheduling algorithm based on terminal feedback

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Embodiment Construction

[0036] figure 1 with figure 2 It reflects the comparison between the performance of the algorithm proposed by the method of the present invention and the performance of the algorithm of the traditional method. Wherein "old algorithm" means the system performance using traditional H-ARQ and scheduling algorithm, and "new algorithm" means using the system performance of H-ARQ with feedback mechanism proposed by the method of the present invention and scheduling algorithm. The following implementation results are obtained when there are many video streams, that is, the system mainly transmits packet data services with real-time requirements.

[0037] from figure 1 It can be seen that the H-ARQ and scheduling algorithm based on the feedback mechanism can effectively reduce the cumulative packet loss rate, and the longer the implementation time, the more obvious the effect.

[0038] figure 2 The end-to-end delay implementation results in the implementation of traditional H-AR...

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Abstract

This invention provides one method for cross H-ARQ and wireless dispatch formula based on terminal feedback, which is characterized by the following: mobile terminal feeds back the right or wrong information to base station and the current buffer size information to the base station; base station receives ration feedback information combined with business service quality, buffer business volume todetermine materials align priority for materials transfer; terminal feedback volume information is fed back to station through determination or not information to simplify the transmission design ofinformation.

Description

technical field [0001] The invention patent belongs to the field of wireless communication, and is not only suitable for the high-speed downlink packet access (HSDPA) technology of the current WCDMA and TD-SCDMA systems, but also suitable for various next-generation wireless mobile communication systems based on packet data scheduling, such as the next-generation Mobile communication system, broadband wireless metropolitan area network, etc. Background technique [0002] The main feature of the third generation and its future mobile communication systems is that there are a large number of non-real-time packet data services, because different users have different transmission rate requirements, and different users have different quality of service (QoS) requirements, so users must be guaranteed Fairness and QoS of transmission services. [0003] In the traditional adaptive processing technology, the method of changing the modulation and coding (that is, Adaptive Coding and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L12/56H04W72/12
Inventor 彭木根王文博
Owner BEIJING UNIV OF POSTS & TELECOMM
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