Paging DCI Repetition for 5G NR Coverage Enhancement
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face limitations in paging coverage due to the use of wide broadcast beams, which result in inadequate coverage for millimeter wave transmissions, and the transmission of paging messages is similar to other broadcast channels, leading to restricted reach.
Innovation Solution
The proposed solution involves the repetition of paging DCI and paging messages, where multiple paging DCIs are combined within one paging occasion, and the use of additional bit fields or tables in the PBCH and RMSI to indicate repetition, allowing for increased coverage by explicitly scheduling and transmitting repeated paging PDCCH and messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If wide broadcast beams are used for paging transmission, then the coverage area is expanded, but the transmission reliability deteriorates due to inadequate coverage for millimeter wave transmissions
Solution Approach 1:
The patent implements periodic repetition of paging DCI and paging messages across multiple transmission occasions. The base station transmits the same paging information multiple times at different time instances, allowing UEs to receive and decode the paging message reliably even in challenging millimeter wave conditions where single transmissions may fail.
Solution Approach 2:
The patent uses PBCH to pre-indicate paging repetition configuration parameters before actual paging transmissions occur. By providing advance configuration information about repetition patterns, resource allocations, and timing, the system prepares UEs to efficiently monitor and receive repeated paging transmissions without requiring complex real-time decision-making.
2Device complexity
If paging messages are transmitted similarly to other broadcast channels, then the system complexity is reduced, but the paging coverage is restricted
Solution Approach 1:
The patent reuses existing broadcast channel structures and signaling mechanisms for paging transmissions. The same physical channels (PBCH, PDSCH) and signaling formats used for system information broadcast are also employed for paging, allowing the system to achieve enhanced paging coverage without introducing entirely new transmission mechanisms or increasing overall system complexity.
Solution Approach 2:
The patent enhances paging coverage by modifying transmission parameters such as repetition count, time intervals between repetitions, and resource allocations, rather than changing the fundamental broadcast channel structure. These parameter adjustments allow flexible optimization of paging performance while maintaining compatibility with existing broadcast channel frameworks.
3Reliability
If repeated paging transmissions are implemented, then the paging coverage and reliability are improved, but the transmission time and resource usage increase
Solution Approach 1:
The patent implements dynamic paging repetition adaptation where the base station can adjust the number of repetitions, time intervals, and resource allocations based on current network conditions, UE capabilities, and traffic patterns. This dynamic approach allows the system to optimize between reliability and time consumption rather than using fixed repetition schemes.
Solution Approach 2:
The patent enables UEs to autonomously monitor multiple paging occasions and independently decode paging messages from repeated transmissions. Each UE can self-manage the reception process by monitoring configured paging occasions, attempting decoding, and stopping upon successful reception, thereby efficiently utilizing transmission resources without requiring centralized coordination for each individual reception event.
Data Source
AI summary
The present disclosure relates to methods and devices for wireless communication including an apparatus, e.g., a user equipment (UE) and/or base station. In one aspect, the apparatus may monitor for a paging physical downlink control channel (PDCCH) and a paging message. The apparatus may also receive the paging PDCCH including paging downlink control information (DCI), where the paging DCI is associated with the paging message. The apparatus may also receive the paging message, where at least one of the paging DCI or the paging message is received more than once. In another aspect, the apparatus may transmit a paging PDCCH including paging DCI, where the paging DCI is associated with a paging message. The apparatus may also transmit the paging message, where at least one of the paging DCI or the paging message is transmitted more than once.