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

A scheduling algorithm, a hybrid automatic technology, applied in the transmission system, digital transmission system, error prevention/detection using the return channel, etc., can solve the problem of real-time retransmission packet discarding, etc., to achieve enhanced adaptability and good scalability , Guarantee the effect of QoS

Inactive Publication Date: 2007-05-30
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] Figures 1 and 2 reflect the comparison between the algorithm performance proposed by the method of the present invention and the algorithm performance of the traditional method. The "old algorithm" represents the system performance of the traditional H-ARQ and scheduling algorithm, and the "new algorithm" represents the system performance of the H-ARQ with feedback mechanism and the scheduling algorithm proposed by the method of the present invention. 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] It can be seen from Figure 1 that the feedback mechanism-based H-ARQ and scheduling algorithm can effectively reduce the accumulated packet loss rate. The longer the implementation time, the more obvious the effect.

[0038] Figure 2 shows the end-to-end delay implementation results in the implementation of traditional H-ARQ and scheduling algorithm...

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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 to determine 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 of information.

Description

Technical field [0001] This invention patent belongs to the field of wireless communication, not only suitable for the current 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 system is the existence of 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 The fairness and QoS of transmission services. [0003] In the traditional adaptive processing technology, the method of changing the modulation and coding (ie adaptive coding and modul...

Claims

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Application Information

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