Explicit Paging Configuration in NR System Information
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Solution Overview
Problem
The New Radio (NR) system lacks a channel for delivering paging and system information to user equipment (UEs) in idle or inactive modes, and there is no explicit configuration for downlink control channels, which affects coverage and efficiency in message transmission.
Innovation Solution
The method involves broadcasting explicit configuration information for communications channels, such as the physical control channel, which overrides default configurations, allowing for optimized channel settings like downlink transmission resources, demodulation reference signals, and synchronization signals, enabling precise paging and system information delivery even in idle or inactive modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If default channel configuration is used in NR system, then system simplicity is maintained, but coverage area and message delivery efficiency deteriorate
Solution Approach 1:
The patent applies preliminary action by pre-configuring downlink control channel parameters (such as search space, resource allocation, and reference signal configuration) in system information blocks before actual message transmission. This allows UEs to have channel configurations ready in advance, enabling immediate and efficient message reception without waiting for dynamic configuration, thereby expanding effective coverage area while maintaining configuration manageability.
Solution Approach 2:
The patent implements parameter changes by introducing explicit downlink control channel configuration parameters in system information, allowing flexibility in adjusting search space locations, resource allocation patterns, and reference signal configurations. These parameter adjustments optimize message delivery efficiency and coverage area without fundamentally changing the channel structure, resolving the contradiction between coverage improvement and complexity increase.
2Measurement precision
If explicit configuration information is broadcast for downlink control channels, then message delivery precision is improved, but system information overhead increases
Solution Approach 1:
The patent applies segmentation by dividing system information into multiple blocks (MIB, SIB1, SIB2, etc.), with downlink control channel configuration parameters placed in appropriate SIBs. This segmentation allows precise configuration of message delivery parameters without requiring all system information to be transmitted as a single large block, thereby improving message delivery precision while managing information overhead through structured organization.
Solution Approach 2:
The patent implements partial action by providing explicit configuration information only for the specific downlink control channel parameters that are needed for message delivery (such as search space configuration and resource allocation), rather than configuring all possible channel parameters. This selective configuration achieves sufficient message delivery precision without incurring excessive system information overhead.
3Use of energy by moving object
If default PDCCH configuration is used in LTE, then system compatibility is maintained, but energy consumption increases due to less efficient message delivery
Solution Approach 1:
The patent applies periodic action by configuring discontinuous reception (DRX) parameters in the downlink control channel configuration, allowing UEs to periodically wake up to receive messages and then enter sleep mode. This periodic operation pattern significantly reduces energy consumption compared to continuous monitoring, while the configured parameters ensure that UEs can quickly resume normal operation after waking, maintaining operational simplicity.
Solution Approach 2:
The patent implements self-service by enabling UEs to autonomously determine their message reception opportunities based on the configured downlink control channel parameters and their own scheduling information. UEs can independently manage their energy consumption by utilizing the pre-configured channel information without requiring continuous network assistance, thereby reducing energy consumption while maintaining ease of operation through autonomous decision-making.
Data Source
AI summary
In one embodiment, a method in a user equipment (UE) includes receiving broadcasted system information from a network node. The broadcasted system information may include explicit configuration information for a communications channel. The method further includes determining a configuration of the communications channel based, at least in part, on the explicit configuration information. The explicit configuration information may be used by the user equipment to override default channel configuration information. The method may further include receiving data over the communications channel.