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Communication system and method using dynamic time division duplex configuration mechanism

A technology of time-division duplex configuration and dynamic time-division duplex, which is applied in the field of communication systems and can solve problems such as timing mismatch

Inactive Publication Date: 2014-11-05
HTC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reconfiguring TDD configurations using dynamic techniques will cause timing mismatches in aperiodic channel status reports

Method used

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  • Communication system and method using dynamic time division duplex configuration mechanism
  • Communication system and method using dynamic time division duplex configuration mechanism
  • Communication system and method using dynamic time division duplex configuration mechanism

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Embodiment Construction

[0032] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Where possible, the same reference signs are used in the drawings and descriptions to refer to the same or similar parts.

[0033] Currently, TDD LTE achieves asymmetric DL-UL subframe allocation of radio frames by providing seven different semi-static configurations. In the 12th release of 3GPP, dynamic TDD configuration (eIMTA) was introduced, so that the base station can dynamically configure or reconfigure the TDD configuration based on traffic conditions. The present invention relates to a single carrier LTE TDD system with dynamic TDD DL-UL reconfiguration functionality. In such systems, using dynamic technology to configure or reconfigure TDD configuration will cause problems between traditional UEs without dynamic reconfiguration capabilities and new UEs with dynamic reconfiguration capabilities, because traditiona...

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Abstract

The invention relates to a communication system and method using a dynamic time division duplex (TDD) configuration mechanism. The present disclosure proposes implementing the dynamic TDD mechanism by imposing a restriction to dynamic TDD configurations to adhere to a set of allowable dynamic TDD configurations. The uplink and downlink HARQ timing reference configurations could be derived from the set of allowable dynamic TDD configurations. The set of allowable TDD configurations, the uplink HARQ timing reference configuration and the downlink HARQ timing reference configuration could be derived based on specific rules. The maximum number of downlink HARQ processes for TDD would follow the downlink HARQ timing reference configuration.

Description

Technical field [0001] The present invention is directed to a communication system and method using a dynamic time division duplex (TDD) configuration mechanism. Background technique [0002] "Further Enhancements to LTE Time Division Duplex (TDD) for Downlink-Uplink (DL-UL) interference management and traffic adaptation The subject of UL)Interference Management and Traffic Adaptation)" has been agreed as a research item of 3GPP Release 11 and a work item of 3GPP Release 12. The 3GPP RAN1 and RAN4 working groups have conducted performance evaluations for various deployment scenarios. It has been shown that the average cell throughput can be improved to a large extent by allowing dynamic reconfiguration in Long Term Evolution (LTE) Time Division Duplex (TDD) systems. [0003] The TDD solution will provide flexible deployment without requiring multiple spectrum resources. Currently, LTE TDD will achieve asymmetric DL-UL allocation by providing seven different semi-statically confi...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L5/14H04L5/22
Inventor 孟令三吴之尧
Owner HTC CORP