Multi-Carrier Uplink Mapping for Energy-Saving Cell States
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing traffic performance in energy-saving networks, particularly in scenarios involving single-carrier and multi-carrier deployments, where UL grants are allocated without considering the energy-saving states of cells, leading to unsuitable resource allocation for traffic with high delay requirements.
Innovation Solution
Implementing mapping restrictions for logical channels based on the energy-saving states of cells, using explicit or implicit indications in DCI or configured grants, to ensure that UL grants are allocated only to channels that meet the specified energy-saving criteria, thereby optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UL grants are allocated without considering energy-saving states of cells, then resource allocation simplicity is maintained, but traffic performance and latency requirements are not met
Solution Approach 1:
The patent applies local quality by configuring different mapping restrictions for different logical channels based on their specific QoS requirements. Each logical channel can have customized mapping restrictions that define which cell states are allowed for uplink transmissions, enabling tailored resource allocation that matches local traffic performance needs without complicating the entire system.
Solution Approach 2:
The patent implements preliminary action by pre-configuring mapping restrictions for logical channels before uplink transmissions occur. The network configures the UE with mapping restriction configurations that specify allowed cell states for each logical channel in advance, so that during actual uplink scheduling, the UE can quickly determine whether to transmit based on current cell state without complex real-time decisions.
2Loss of time
If mapping restrictions are implemented for logical channels based on cell states, then traffic performance is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the uplink resource allocation process into distinct logical channels, each with its own mapping restriction configuration. This segmentation allows the system to apply different state-based rules to different types of traffic, reducing latency for time-sensitive channels while maintaining simpler rules for less critical traffic, thereby managing overall complexity.
Solution Approach 2:
The patent implements parameter changes by introducing mapping restriction parameters that define which cell states are permitted for each logical channel. These parameters can be dynamically configured and adjusted based on network conditions and QoS requirements, allowing the system to optimize latency performance by changing the state parameters without redesigning the entire resource allocation framework.
3Use of energy by moving object
If multiple cell states are supported with different mapping restrictions, then energy-saving efficiency is improved, but ease of operation deteriorates
Solution Approach 1:
The patent applies universality by creating a unified mapping restriction configuration framework that works across multiple logical channels and cell states. The same basic configuration structure and evaluation logic is used for all logical channels, regardless of their specific QoS requirements, which simplifies configuration management while still enabling differentiated energy-saving behavior for different traffic types.
Data Source
AI summary
Methods and apparatuses for ensuring traffic performance are disclosed. A UE comprises a processor; and a transceiver coupled to the processor, wherein, the processor is configured to receive, via the transceiver, a configuration of mapping restriction for a logical channel, and select the logical channel for a UL grant if the state associated with the UL grant satisfies the mapping restriction for the logical channel.