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Method and device for storing data packets

A data packet and device technology, applied in wireless communication, transmission system, network flow/resource management, etc., can solve the problems of address space waste and wasted address space, and achieve the effect of reducing address space and improving utilization rate

Inactive Publication Date: 2011-11-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the above that although the existing method is very simple, the address space of one window is wasted, because according to the protocol, only one address space of the window is actually used, that is, half of the address space must be wasted

Method used

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  • Method and device for storing data packets
  • Method and device for storing data packets

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Embodiment Construction

[0031] The main idea of ​​the present invention is to set the number value of the address space of the array to be equal to the window size value (that is, half of the maximum frame number) based on the existing circular queue storage structure, and each address space in the array corresponds to an identifier , Called the array subscript. At this time, the mapping relationship between the array subscript and the frame number of the data packet is: the remainder of the frame number value of the data packet divided by the window size value is the array subscript corresponding to the data packet , That is, store the data packet in the address space corresponding to the subscript of the array, so that all the address space of the array can be fully utilized.

[0032] The technical solution of the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0033] A device for storing data packets, which can be placed on the se...

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Abstract

The invention discloses a method and equipment for storing data packets, and relates to the field of wireless communication. The method of the present invention includes: setting the value of the address space of the array used to store the data packet to be equal to the size value of the sliding window, wherein each address space corresponds to an array subscript; The frame number of the data packet and the size value of the sliding window determine the array index corresponding to the data packet to be cached, and store the data packet to be cached in the address space corresponding to the determined array index. Compared with the prior art, the technical scheme of the invention reduces the address space by half, thereby improving the utilization rate of the address space.

Description

Technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for storing data packets of a wireless link control layer protocol entity in an LTE (Long Term Evolution) system. Background technique [0002] In the LTE radio link control protocol (RLC), the sliding window mechanism is used to achieve flow control. The sliding window is half of the maximum frame number. For example, the maximum frame number of the AM (acknowledgement mode) entity of RLC is 1024, then the sending side The sending window size is 512. Such windows are specified in the RLC protocol with AM sending window and rearrangement window; UM (unconfirmed mode) rearrangement window, which requires a storage and retrieval mechanism to ensure. [0003] The current general strategy is to use the data storage structure of the circular queue, as shown in the attached figure 1 As shown, a one-dimensional array is provided. The number of address spaces o...

Claims

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Application Information

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IPC IPC(8): H04W28/14
CPCH04L49/901H04L49/9094H04L47/34H04L47/14H04L49/9031
Inventor 杨新尧
Owner ZTE CORP
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