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Systems and methods for carrier aggregation

A technology of carrier aggregation and user equipment, applied in the field of communication systems, which can solve problems such as limited flexibility and/or efficiency

Active Publication Date: 2019-11-01
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the communication structure used may only provide limited flexibility and / or efficiency

Method used

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  • Systems and methods for carrier aggregation
  • Systems and methods for carrier aggregation
  • Systems and methods for carrier aggregation

Examples

Experimental program
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Embodiment Construction

[0022] A user equipment (UE) for performing carrier aggregation is described. The UE includes a processor and memory in electronic communication with the processor. Instructions stored in the memory are executable by the processor to determine a duplexing method for carrier aggregation for each serving cell. The primary cell is an FDD cell. When a Physical Downlink Shared Channel (PDSCH) Hybrid Automatic Repeat Request Ack / Nack is sent on the Physical Uplink Shared Channel (PUSCH) or using the Physical Uplink Control Channel (PUCCH) format 3 in subsequent subframes (HARQ-ACK) information, the instructions are also executable to support up to two transport blocks in the configured downlink transmission mode, the serving cell is a TDD cell, and the previous subframe is an uplink for the serving cell When no subframe is used, two negative acknowledgments (NACKs) for PDSCH transmissions are generated in the previous subframe for the serving cell. The instructions are also execu...

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Abstract

A UE for performing carrier aggregation is described. The UE determines a duplexing method for carrier aggregation for each serving cell. The primary cell is an FDD cell. The secondary cell is a time division duplex (TDD) cell. In order to send HARQ‑ACK information on PUCCH format 1b with channel selection in subsequent subframe n, the UE determines to use a single FDD serving cell HARQ‑ACK based on whether subframe n‑4 is an uplink subframe for a secondary cell. ACK reporting process. Determining whether subframe n-4 is an uplink subframe for the secondary cell is based on the uplink / downlink UL / DL configuration defined by the radio resource control common secondary cell RRCCommonSCell message.

Description

technical field [0001] The present disclosure relates generally to communication systems. More specifically, the present disclosure relates to systems and methods for carrier aggregation. Background technique [0002] To meet consumer demands and to increase portability and convenience, wireless communication devices have become smaller and more powerful. Consumers have become dependent on wireless communication devices and expect reliable service, expanded coverage areas, and increased functionality. A wireless communication system can provide communication for a plurality of wireless communication devices, each of which can be served by a base station. A base station may be a device that communicates with wireless communication devices. [0003] As wireless communication systems have advanced, improvements in communication capacity, speed, flexibility and / or efficiency have been sought. However, some problems may arise with increasing communication capacity, speed, fle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/04H04W72/04
CPCH04L5/001H04L5/0055H04L1/1671H04L1/1861H04L5/1469H04L5/14H04L1/1887H04W72/0446
Inventor 尹占平山田升平
Owner SHARP KK