Inband Control Multiplexing for 5G Scheduling Overhead Reduction
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Solution Overview
Problem
The 5G wireless communication system faces challenges in efficiently scheduling data due to increased complexity and overhead in acquiring outband signal information in each subframe, particularly in ultra-wide bandwidth scenarios, which limits forward compatibility and resource utilization.
Innovation Solution
A method and apparatus that multiplex control information with data in the same radio resources, defining inband signals for efficient data transmission and reception, reducing the need for additional outband signal acquisition by the UE, and using inband signals to convey resource allocation information for future subframes, thereby simplifying UE implementation and reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If outband signal information is acquired in each subframe, then data transmission reliability is improved, but signaling overhead and UE reception complexity increase
Solution Approach 1:
The patent extracts the resource allocation information for future subframes from the outband signals and places it in the inband signal of the current subframe. This separation allows the UE to obtain necessary scheduling information without detecting outband signals in every subframe, thereby reducing reception complexity while maintaining reliable data transmission.
Solution Approach 2:
The patent implements preliminary action by including resource allocation information for future subframes in the current subframe's inband signal. This advance provision of scheduling information enables the UE to prepare for future data reception without needing to detect outband signals at that time, reducing complexity while ensuring transmission reliability.
2Adaptability or versatility
If outband signal information is acquired in each subframe, then forward compatibility is improved, but signaling overhead increases
Solution Approach 1:
The patent merges the resource allocation information for future subframes into the current subframe's inband signal. This consolidation reduces the need for separate outband signaling, thereby decreasing signaling overhead while maintaining forward compatibility through the unified signaling approach.
3Quantity of substance
If inband signals are used to convey resource allocation information, then signaling overhead is reduced, but signal resource utilization complexity increases
Solution Approach 1:
The patent applies universality by using the inband signal to serve multiple functions: carrying both current subframe data and future subframe resource allocation information. This multi-functional use of inband signals reduces the need for additional outband signals while managing resource utilization through a unified signaling mechanism.
Data Source
AI summary
A method and an apparatus for scheduling data in a wireless communication system are provided. The method includes checking first control information in a first subframe, checking a first block including second control information and first data based on the first control information in the first subframe, and decoding the first data based on the second control information in the first subframe. The first control information includes resource allocation information related to the first block, and the second control information includes one of channel state information about the first data, or resource allocation information related to a second block in a second subframe.