Resource scheduling method utilized in operations sensitive to downward error in OFDM

Abstract

The invented method includes following steps with characters of supporting hybrid automatic feed back request (HARQ) technique. In preparing step, the dispatching cycle is fixed. Several adjacent subcarrier waves constitute the sub band. The resource composed of several sub bands is dispatched once a time in each time slot. Then, the mobile station feeds back the word of data rate control (DRC) obtained by quantizing average S / N ratio based on each sub band. In the step of dispatching retransmission data, after calling out the parameters of the scheme at last transmission for retransmission data, the retransmission data are fed back for several transmissions, which have largest DRC, in user's all available sub bands. The invention uses the low error rate of HARQ method and gives attention to both of fairness and system efficiency, and processes low feedback quantity and control amount of information.

Description

technical field

[0001] The resource scheduling method for error-sensitive services under OFDM belongs to the resource scheduling technology in the field of wireless communication. Background technique

[0002] The growing demand for wireless data services requires communication systems to transmit various types of data flexibly and at high speed, such as high-speed multimedia services, low-speed Internet browsing and low-speed voice services. These services can be divided into delay-sensitive and error-sensitive types. Delay-sensitive services have high requirements on transmission delay and delay jitter, but a certain degree of transmission error can be tolerated. The error-sensitive business has higher requirements on the accuracy of data transmission, but there is no strict delay requirement, so it can also be called non-real-time business. For this kind of business, it is suitable to adopt HARQ technology to further improve its bit error performance. How to schedule l...

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