Carrier Aggregation Scheduling Across Component Carriers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Carrier aggregation systems face challenges with high power consumption due to separate scheduling of system information by base stations in power saving mode.
Innovation Solution
A base station transmits a system scheduling message on a first component carrier to schedule monitoring occasions for system information of a second component carrier, allowing the second carrier to operate in power saving mode without transmitting the information directly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station transmits system information directly on the second component carrier, then the user equipment can receive system information reliably, but the power consumption of the base station increases
Solution Approach 1:
The first component carrier acts as an intermediary to transmit scheduling information for the second component carrier's system information. The base station schedules monitoring occasions on the first CC, allowing the second CC to remain in power saving mode while still enabling reliable system information delivery to user equipment through coordinated scheduling between the two carriers.
2Use of energy by stationary object
If the base station operates in power saving mode on the second component carrier, then power consumption is reduced, but the ability to transmit system information directly is compromised
Solution Approach 1:
The first component carrier performs multiple functions: it serves as the primary carrier for user equipment communication and simultaneously acts as a scheduling carrier for the second component carrier's system information. This multi-functionality allows the second carrier to operate in power saving mode while maintaining system information transmission capability through the first carrier's scheduling coordination.
3Device complexity
If separate scheduling is used for system information on each component carrier, then the scheduling is simple and direct, but the overall system complexity and power consumption increase
Solution Approach 1:
The scheduling functions for multiple component carriers are merged into a unified scheduling mechanism. The first component carrier's scheduling message incorporates monitoring occasion information for the second component carrier's system information, consolidating what would otherwise be separate scheduling processes into a single coordinated approach that reduces overall system complexity and power consumption.
Data Source
AI summary
A base station can include a transceiver and a processor communicatively coupled to the transceiver. The transceiver can enable wireless communication with a user equipment (UE) by a first component carrier (CC) in a first cell managed by the base station in a carrier aggregation (CA) wireless communication system. The processor can generate a system scheduling message to be transmitted on the first CC to the UE in the first cell, where the system scheduling message comprises a schedule of monitoring occasions for system information of a second CC by the UE in a second cell. Afterwards, the processor can transmit the system scheduling message on the first CC to the UE.