Central Aggregation Device Paging Control for Remote Radio Units
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Solution Overview
Problem
The separation of radio physical layer functions in remote devices from central aggregation devices in 5G radio base stations complicates cooperation between the radio physical layer and upper layers, such as the MAC scheduler, making effective control of user devices challenging.
Innovation Solution
Incorporating an information transmitting unit in the central aggregation device to send paging and random access information to the remote device, which then sets and transmits downlink physical channels for paging and random access responses to user devices, ensuring appropriate control even when functions are mounted separately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the function of the radio physical layer is mounted in the remote device and the function of the upper layer is mounted in the central aggregation device, then the required transmission band for the front-haul can be reduced, but the cooperation between the radio physical layer and the upper layer becomes difficult
Solution Approach 1:
The patent introduces an intermediary mechanism where the central aggregation device generates control information (PDCCH) and transmits it to the remote device, which then transmits the control information to the user device. This intermediary approach allows the upper layer function to remain in the central aggregation device while the radio physical layer function is mounted in the remote device, maintaining cooperation while reducing transmission band requirements.
2Productivity
If the function of the upper layer such as the MAC scheduler is mounted in the central aggregation device and the function of the radio physical layer is mounted separately in the remote device, then processing loads can be reduced, but appropriate control on user devices becomes challenging
Solution Approach 1:
The patent segments the base station functions into two separate devices: the central aggregation device handles upper layer functions (MAC scheduler, control information generation) while the remote device handles radio physical layer functions (control information transmission, signal processing). This segmentation allows processing loads to be distributed appropriately while maintaining effective user device control through the defined information flow between the segmented components.
Data Source
AI summary
One object is to provide a radio base station and a communication control method that can realize appropriate control on a user device even when a function of an upper layer such as MAC scheduler and a function of a radio physical layer are mounted separately. A communication control method according to the present invention is implemented in a radio base station (200) including a remote device (260) and a central aggregation device (210) and that performs radio communication with a user device (300). The communication control method includes transmitting including the central aggregation device (210) transmitting to the remote device (260) paging information that is information used for performing paging on the user device (300), and performing including the remote device (260) setting a downlink physical channel based on the paging information received from the central aggregation device (210) and performing the paging.