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Improved uplink segmentation

A wireless link control, transmission block technology, applied in the direction of network traffic/resource management, digital transmission system, electrical components, etc., can solve the problems of power jump, waste of precious resources, large difference between transmission blocks, etc.

Active Publication Date: 2011-10-19
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the remainder of an RLC PDU or RLC SDU can wait in a buffer and be spliced ​​with a subsequently incoming SDU, this configuration is not always acceptable for delay sensitive services such as Voice over Internet Protocol (VoIP), etc.
Due to limited uplink resources, excessive padding is a waste of precious resources
Another disadvantage of this segmentation method is that the difference between the two transport block sizes can be very large, which can lead to power jumps (or power fluctuations) in the user equipment

Method used

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Embodiment Construction

[0025] The following detailed description refers to the accompanying drawings. In different drawings, the same reference numbers may identify the same or similar elements. Also, the following detailed description does not limit the invention.

[0026] Embodiments described herein may apply a modified MAC segmentation mechanism and / or a modified radio-aware RLC segmentation mechanism to minimize padding of RLC PDUs or SDUs during ETFC selection. The modified fragmentation mechanism described herein may ensure that less padding is included in the transport block size, which may prevent and / or reduce power waste, interference generation, and / or power hopping.

[0027] figure 1 A diagram of an example network 100 in which the systems and / or methods described herein may be implemented is depicted. As shown, network 100 may include a set of user equipments (UEs) 110-1 through 110-L (collectively and in some cases individually "user equipments 110"), a radio access network (RAN) 1...

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Abstract

A device (110) receives a radio link control (RLC) protocol data unit (PDU) (740) or service data unit (SDU) (760) to be segmented, defines a padding threshold (840) for a segmentation mechanism, and determines a padding ratio (850) after enhanced dedicated channel transport format combination (ETFC) selection (730). The device selects a first transport block (960) and a second transport block (970) associated with the RLC PDU / SDU (740 / 760) when the padding ratio (850) is greater than or equal to the padding threshold (840), and generates a modified segmentation of the RLC PDU / SDU (740 / 760) based on the first and second transport blocks (960 / 970) when a padding ratio (RTB) associated with the first and second transport blocks (960 / 970) is less than the padding threshold (840) and a size ratio (STB) associated with the first and second transport blocks (960 / 970) is within a size threshold (980).

Description

technical field [0001] Embodiments described herein relate generally to wireless communication systems and, more particularly, to improved uplink segmentation in wireless communication systems. Background technique [0002] Prior to 3rd Generation Partnership Project (3GPP) Release 6, a Radio Link Control (RLC) Protocol Data Unit (PDU) was a fixed size (eg, "336" or "656" bits). When the packet from higher layers is larger than the RLC payload size, the RLC needs to segment the Service Data Unit (SDU) (eg into "320" or "640" bits) to fit the RLC PDU size. Media Access Control (MAC), on the other hand, can perform splicing, but not segmentation. [0003] For larger packets generated at the application layer, this small and fixed RLC PDU size is inefficient and prevents the user equipment (UE) from achieving higher user throughput. Therefore, in 3GPP Release 7, the concept of flexible RLC is introduced. Flexible RLC means that the RLC PDU size can be any length smaller than...

Claims

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Application Information

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IPC IPC(8): H04W72/12
CPCH04W28/065H04L1/0083
Inventor 范锐胡荣斯蒂芬·瓦格尔
Owner TELEFON AB LM ERICSSON (PUBL)