Uplink Control Signal Bit Ordering in Multi-TRP 5G NR Systems
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Solution Overview
Problem
Current 5G New Radio (NR) wireless communication systems face challenges in controlling signaling transmission and reception, particularly in multi-panel transmission scenarios where terminal devices communicate with multiple transmission/reception points (TRPs), leading to ambiguity in uplink control information bit ordering.
Innovation Solution
The proposed solution involves a method for a terminal device to transmit uplink control signals by receiving downlink control signals from multiple TRPs and ordering the control information based on TRP identification, resource identification, scrambling sequence initialization, and reference signal associations, ensuring clear and unambiguous bit ordering in uplink control signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple downlink control signals are received from different TRPs in multi-panel transmission, then the uplink control signal can carry control information for multiple TRPs, but the bit ordering of control information becomes ambiguous
Solution Approach 1:
The patent applies preliminary action by establishing bit ordering rules for control information before transmission. The terminal device determines the ordering of control information bits associated with multiple TRPs based on pre-configured parameters such as TRP identification, resource identification, scrambling sequence initialization values, or reference signal associations. This pre-determined ordering eliminates ambiguity during the actual transmission and reception process, ensuring that both the terminal and network device can correctly interpret the control information without additional signaling overhead.
2Productivity
If control information from multiple TRPs is transmitted in a single uplink control signal, then transmission efficiency is improved, but the complexity of determining bit ordering increases
Solution Approach 1:
The patent applies parameter changes by utilizing various identification parameters to determine bit ordering, including TRP identification, resource identification (such as physical resource block indices or orthogonal cover code indices), scrambling sequence initialization values, and reference signal associations. By changing or selecting different parameter sets, the system can flexibly determine the bit ordering without increasing device complexity. The terminal device simply compares these parameters across different TRPs to establish the ordering, which is a straightforward process that does not require complex algorithms.
Data Source
AI summary
Embodiments of the present disclosure relate to methods, devices, and computer readable medium for uplink signal transmitting and receiving. A method comprises: receiving a first downlink signal from a first transmission/reception point (TRP); receiving a second downlink signal from a second TRP; and transmitting an uplink control signal to at least one of the first and second TRPs, the uplink control signal comprising first control information associated with the first downlink signal and second control information associated with the second downlink signal, and the first control information and the second control information being included in the uplink control signal in an order determined by an identification related to reference signals associated with the first downlink signal and the second downlink signal. Embodiments of the present disclosure may avoid ambiguity in uplink control information bit ordering in uplink control signal transmission and reception.