Terminal Communication Scheduling for Sub-Band Full Duplex NR
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Solution Overview
Problem
Existing communication technologies face challenges in implementing a sub-band non-overlapping full duplex scheme, particularly in handling simultaneous downlink and uplink transmissions in a half duplex time division duplex mode, leading to unclear resource allocation and inefficiencies in NR technology.
Innovation Solution
The proposed solution involves a method for a terminal device to receive indications of transmissions and determine operations based on sub-band full duplex mode, handling overlapping transmissions by allocating resources within specific sub-bands and adjusting behavior accordingly, ensuring valid transmissions occur only in compatible sub-bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If half duplex time division duplex mode is configured for a UE, then the UE can perform traditional UL or DL transmission, but the UE cannot simultaneously transmit and receive in the same time interval
Solution Approach 1:
The patent divides the bandwidth into multiple non-overlapping sub-bands, allowing different sub-bands to operate in different transmission directions simultaneously. This segmentation enables full duplex operation within the same time interval by separating UL and DL transmissions in the frequency domain while maintaining half duplex operation at the UE level for each sub-band.
Solution Approach 2:
The patent introduces frequency domain segmentation as an additional dimension to the traditional time-domain TDD approach. By adding the sub-band dimension, the system achieves simultaneous UL and DL transmissions without requiring full duplex capability at the UE level, thus resolving the contradiction between adaptability and productivity.
2Productivity
If sub-band non-overlapping full duplex scheme is deployed, then simultaneous UL and DL transmissions are enabled, but resource allocation and handling become unclear
Solution Approach 1:
The patent applies different transmission directions to different sub-bands within the same time interval. Each sub-band has locally defined transmission characteristics (UL or DL), allowing the network to schedule UL transmissions in some sub-bands and DL transmissions in other sub-bands simultaneously, thereby reducing overall resource allocation complexity while maintaining high productivity.
3Ease of operation
If traditional half duplex operation is used, then UE operation is simple, but UL coverage and latency performance are limited
Solution Approach 1:
By segmenting the bandwidth into multiple sub-bands, the patent enables the network to schedule UL transmissions in sub-bands with better channel conditions and lower interference, thereby improving UL coverage and reducing latency without requiring full duplex operation at the UE level, maintaining operational simplicity.
Data Source
AI summary
Embodiments of the present disclosure relate to methods, devices and computer readable media of communication. A terminal device receives, from a network device, an indication of a set of transmissions to be transmitted or received by the terminal device in a set of time intervals, a transmission in the set of transmissions being indicated to be transmitted or received by the terminal device in a time interval in the set of time intervals. If the time interval comprises a time interval associated with sub-band full duplex mode, the terminal device performs an operation related to transmitting or receiving the transmission. In this way, a sub-band non-overlapping full duplex scheme with respect to resource allocation may be well supported.