Low latency communications using fountain codes based on carrier aggregation

一种喷泉码、载波的技术，应用在编码、代码转换、编码元件等方向，能够解决增加延时等问题

Active Publication Date: 2022-04-12
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As such, when a base station requests a retransmission, it may add latency, among other problems

Method used

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Embodiment Construction

[0067] In some cases, a first device, such as a user equipment (UE), may map one or more packet data convergence protocol (PDCP) protocol data units (PDUs) to one or more radio link control (RLC) PDUs , and the RLC PDU may be sent to the second device (for example, the base station) through the carrier. Assuming the second device receives the RLC PDUs with a sufficiently high signal strength and a sufficiently low amount of interference, the second device may be able to successfully decode each of the RLC PDUs. However, if any of the received RLC PDUs have too high interference, the second device may not be able to decode these RLC PDUs. In order for the second device to still be able to receive the data contained in these RLC PDUs, the second device may send to the first device an indication that the second device failed to successfully decode at least some of the RLC PDUs, the first device These RLC PDUs may be retransmitted sequentially. However, sending this indication a...

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Abstract

Methods, systems, and devices for wireless communication are described. An encoding device (e.g., a user equipment (UE) or a base station) may divide one or more data units (e.g., packet data convergence protocol (PDCP) protocol data units (PDUs)) into sets of data blocks. The encoding device may encode the set of data blocks using the fountain code, and may generate a set of data units (e.g., Radio Link Control (RLC) PDUs) based on encoding the set of data blocks using the fountain code. The UE may assign a first subset of the set of data units to a first carrier and a second subset of the set of data units to a second carrier, and may transmit the first subset on the first carrier and the second subset on the second carrier.

Description

technical field [0001] In general terms, the following relates to wireless communications, and more specifically, to low-latency communications based on fountain codes for carrier aggregation. Background technique [0002] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be able to support communication with multiple users by sharing available system resources (eg, time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE Advanced (LTE-A) systems or LTE-A Pro systems and what may be referred to as New Radio (NR) systems. Fifth generation (5G) systems. These systems can employ, for example, Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04L1/0041H04L1/0045H03M13/3761H04L5/001H04L1/0057
Inventor 许昌龙骆涛徐浩
Owner QUALCOMM INC
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