Group Common PDCCH Transmission Period Configuration
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Solution Overview
Problem
Current LTE systems lack a clear solution for transmitting and notifying group common PDCCH (Physical Downlink Control Channel) information to terminals, leading to uncertainty in reception and inefficient resource allocation.
Innovation Solution
A method is introduced to explicitly or implicitly indicate the transmitting period and starting time slot position of the group common PDCCH, using protocols, broadcast signaling, or high-layer signaling to ensure terminals can accurately receive the group common PDCCH, thereby improving network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no clear transmission method is defined for group common PDCCH, then the system maintains simplicity in control channel design, but terminal reception becomes uncertain and resource allocation becomes inefficient
Solution Approach 1:
The patent applies parameter changes by dynamically configuring the transmitting period and starting time slot position of group common PDCCH through higher-layer signaling or broadcast signaling. This allows the system to adapt transmission parameters according to service requirements, improving terminal reception reliability while maintaining flexible control over transmission complexity.
Solution Approach 2:
The patent implements dynamics by making the PDCCH transmission periodicity and starting position configurable rather than fixed. The base station can dynamically adjust these parameters based on traffic conditions and service types, enabling the system to balance between reception reliability and resource allocation efficiency.
2Loss of information
If the transmitting period and starting position are not clearly indicated, then the signaling overhead is reduced, but the terminal cannot accurately receive the group common PDCCH
Solution Approach 1:
The patent applies preliminary action by pre-configuring the transmitting period and starting time slot position through higher-layer signaling or broadcast signaling before actual PDCCH transmission. This preliminary indication ensures that terminals have the necessary information to accurately receive group common PDCCH without requiring extensive real-time signaling.
Solution Approach 2:
The patent uses broadcast signaling or higher-layer signaling as an intermediary to convey the transmitting period and starting position information from the base station to terminals. This intermediary mechanism efficiently transmits the necessary control parameters without requiring direct one-on-one signaling between base station and each terminal.
3Adaptability or versatility
If flexible configuration of uplink and downlink resources is implemented, then various service requirements are met, but the system complexity increases
Solution Approach 1:
The patent applies universality by designing a configurable PDCCH transmission framework that can serve multiple service types (eURLLC, eMTC, NB-IoT, etc.) through a unified mechanism. The same configuration approach using broadcast signaling or higher-layer signaling can accommodate different service requirements, reducing the need for separate specialized mechanisms for each service type.
Data Source
AI summary
A downlink channel transmitting method, a downlink channel receiving method, devices thereof, a base station and a terminal are provided. The downlink channel transmitting method is applied to a base station and includes: indicating, explicitly or implicitly, a transmitting period of a group common physical downlink control channel.