Band-width resource distribution

Abstract

The method comprises: a) classifying the objects desiring to get resource; b) according to the resource occupation of each kind of objects, dividing the relevant resource area; c) allocating a resources sub-area for the object in certain kind of resource area.

Description

technical field [0001] The invention relates to the field of access networks, in particular to a method for allocating bandwidth resources. Background technique [0002] With the development of broadband wireless access technology, limited air interface bandwidth resources become more and more precious. How to efficiently utilize bandwidth resources has become a problem we must face. [0003] The IEEE 802.16 standard proposes a method for allocating downlink bandwidth resources in two dimensions of time domain and frequency domain for OFDMA. The allocation of downlink bandwidth resources is based on the frame unit. Within a frame, the burst (indefinite length) that needs to be filled in the frame is allocated according to the rectangle in the two-dimensional space composed of time and frequency, and each burst occupies An integer number of slots (time slots). [0004] The downlink frame format defined in the IEEE 802.16 standard is as follows: figure 1 Shown (downlink fr...

AI Technical Summary

Problems solved by technology

[0010] Disadvantage 1: complex processing and large delay

However, after allocating burst1, this implementation can only handle bursts with a slot number not exceeding 40.

This will cause a large number of bursts to stay, increase the complexity of the interface, and increase the delay of burst transmission, which may lead to failure to meet the QoS requirements

[0012] Disadvantage 2: low utilization rate

[0013] After this implementation scheme allocates a larger burst, there will be more unallocated resource areas that cannot meet the minimum requirements of the burst, resulting in a waste of bandwidth resources.

And the waste of bandwidth resources will also be generated inside the allocated rectangular resources

Because in this allocation scheme, when allocating space for burst, the number of columns allocated for symbols is relatively small. In the case of a certain amount of space to be allocated, this leads to a large number of subchannels occupied by the allocated space.

This will lead to the fact that only the first slot or the first few slots in the last column are actually used, resulting in a great waste of internal resources

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