Wireless Terminal Radio Resource Allocation via Semi-Persistent Scheduling
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Solution Overview
Problem
Current scheduling schemes in LTE systems, particularly for MTC devices, are inefficient due to excessive signaling and lack of flexibility in radio resource allocation, which can lead to inadequate performance and increased power consumption.
Innovation Solution
Implementing a wireless communication system that allocates radio resources in a semi-persistent manner across multiple time segments or subframes, allowing for flexible allocation and reducing signaling overhead, while maintaining efficient data transmission and error-resilient modulation schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current scheduling schemes are used in LTE systems, then radio resources can be allocated to MTC devices, but signaling overhead increases and flexibility is reduced
Solution Approach 1:
The base station performs preliminary actions by allocating radio resources in advance for multiple periodic communications. The resource allocation information includes time segment indications and resource parameters that are determined before the actual communication occurs, reducing the need for continuous signaling during the communication period.
Solution Approach 2:
The communication period is divided into multiple time segments, and the resource allocation information specifies which segments are allocated for periodic communication. This segmentation allows flexible allocation of radio resources across different time segments while reducing signaling overhead by indicating only the necessary segments.
2Productivity
If current scheduling schemes are used, then data transmission can be performed, but power consumption increases due to inefficient resource allocation
Solution Approach 1:
The patent implements periodic wireless communication with a configured period length. The base station allocates radio resources for periodic communications, and the terminal device performs transmissions only in the allocated time segments according to the periodic pattern, avoiding unnecessary power consumption during non-allocated periods.
Solution Approach 2:
The base station determines and notifies the terminal device of resource allocation information in advance, including time segment indications and resource parameters. This preliminary action allows the terminal device to prepare and execute communications efficiently without continuous power-consuming signaling exchanges.
3Adaptability or versatility
If radio resources are allocated dynamically, then flexibility is maintained, but signaling overhead and system complexity increase
Solution Approach 1:
The base station performs preliminary resource allocation by determining resource allocation information that includes time segment indications and resource parameters for periodic communications. This preliminary action reduces the need for continuous dynamic scheduling decisions, simplifying the overall system complexity while maintaining allocation flexibility.
Solution Approach 2:
The resource allocation information specifies particular time segments within the communication period for periodic transmissions. This segmentation approach maintains flexibility by allowing selective allocation of specific segments while reducing complexity compared to managing all segments dynamically.
Data Source
AI summary
A wireless terminal including: a memory, and a processor coupled to the memory and configured to: communicate with a wireless base station using a wireless signal that is divided into sequential time segments, receive first information from the wireless base station, the first information including a length of a period for periodic wireless communication that is performed using the wireless signal, the length of the period being a specified number of time segments in the sequential time segments, and perform the periodic wireless communication with the wireless base station based on the first information, wherein the first information includes second information indicating at least one time segment within the period for the periodic wireless communication, the indicated at least one time segment in which a radio resource for the periodic wireless communication is allocated for the wireless terminal.