name: HD-FDD
full_form: Half-Duplex FDD
context: Coverage: If there are no stringent requirements on latency and data rate, then HD-FDD will not result in coverage loss, otherwise a coverage loss can be expected. Network capacity and spectral efficiency: HD-FDD operation has minor impact on spectral efficiency and capacity. Data rate: There is minor impact from HD-FDD operation on instantaneous data rates for uplink or downlink, but similarly to TDD, HD-FDD reduces user throughput compared to FD-FDD, especially in case of simultaneous downlink and uplink traffic, and it may be challenging to meet the peak data rate requirements in downlink and uplink simultaneously. For peak rate impacts from other combinations of UE complexity reduction techniques, see clause 7.8.3. Latency and reliability: HD-FDD introduces longer latency than FD-HDD, especially in case of simultaneous downlink and uplink traffic, but the latency and reliability requirements of RedCap use cases can still be fulfilled at least for one direction (downlink or uplink).
description: Half-Duplex FDD (HD-FDD) is a technology standard in telecommunications that refers to a specific mode of operation in wireless communication systems, particularly in the context of 5G networks. It involves the use of half-duplex communication, where data transmission and reception occur on the same frequency band but at different times, as opposed to full-duplex FDD (FD-FDD) which allows simultaneous transmission and reception.
explanation: The text describes HD-FDD as a technology standard with specific operational characteristics in wireless communication systems. It delves into its technical aspects, such as half-duplex communication and its implications for network performance. This focus on the technical definition and functionality clearly classifies it under the 'Technology' category.
section_title: 7.4.3Analysis of performance impacts
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