Common Channel Adaptation Triggering via Random Access Resources
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Solution Overview
Problem
Existing communication systems face challenges in efficiently managing network energy consumption, particularly in 5G networks, due to issues with on-demand signaling for common channels like SIB1 and PRACH, which impact environmental sustainability and operational costs.
Innovation Solution
The implementation of a communication apparatus and method that allows for the configuration and transmission of uplink requests for common channel adaptation, using candidate random access resources associated with serving or targeted cells, to trigger signals like UL WUS, enabling efficient switching or adaptation of channels like SIB1 and PRACH, while minimizing network energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If on-demand signaling for common channels (SIB1, PRACH) is implemented, then network energy consumption is reduced, but signaling efficiency and service quality may deteriorate
Solution Approach 1:
The patent implements dynamic adaptation of common channel behavior based on UE requests. The network can switch between different SIB1 transmission behaviors (always transmit, transmit on demand, or transmit based on triggering) and PRACH configuration based on received uplink requests from UEs, allowing the system to adapt its signaling behavior dynamically while maintaining service quality
Solution Approach 2:
The patent introduces a feedback mechanism where UEs send uplink requests (via MAC CE or RRC signaling) to trigger SIB1 transmission or PRACH configuration changes. This feedback loop allows the network to respond to actual UE needs, transmitting common channels only when required, thereby reducing energy consumption while maintaining signaling efficiency
2Loss of energy
If common channel adaptation triggering is implemented, then operational costs are reduced, but system complexity increases
Solution Approach 1:
The patent enables UE-initiated common channel adaptation where user equipment autonomously determines when SIB1 transmission or PRACH configuration is needed and sends appropriate uplink requests. This self-service approach distributes the intelligence from the network side to the UE side, reducing network operational costs while keeping system complexity manageable through standardized procedures
Solution Approach 2:
The patent segments the common channel adaptation process into distinct, manageable components: UE request generation, request transmission via MAC CE or RRC, network processing, and channel behavior adaptation. This segmentation allows each component to be implemented and managed independently, reducing overall system complexity
3Productivity
If random access resources are configured for uplink requests, then channel switching efficiency is improved, but resource overhead increases
Solution Approach 1:
The patent configures random access resources that serve multiple functions: they can be used for initial access, for triggering SIB1 transmission, for requesting PRACH configuration, and for other uplink signaling purposes. This multi-functionality allows the system to improve channel switching efficiency without proportionally increasing resource overhead, as the same resources handle multiple types of communications
Data Source
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AI summary
Provided are a communication apparatus, a base station, and corresponding communication methods. The communication apparatus comprises a transceiver, which, in operation, receives a configuration of one or more candidate random access resources for transmitting an uplink request for switching or adaptation of a common channel, wherein each of the one or more candidate random access resources is associated with one or both out of: • a cell from among one or more cells including a current serving cell of the communication apparatus, or • a targeted behavior of the communication apparatus; and circuitry which, in operation, determines, based on the configuration, a random access resource for transmitting the uplink request from the one or more candidate random access resources, wherein the transceiver, in operation, transmits the uplink request on the determined random access resource.