Carrier Selection for Semi-Persistent Scheduling Data
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Solution Overview
Problem
Conventional semi-persistent scheduling (SPS) data transmission in communication systems experiences a high probability of retransmission and fails to achieve flexible matching of multiple users, leading to reduced system throughput.
Innovation Solution
Determining an initial transmission carrier for SPS data based on channel condition information and the gain of a multi-user multiple-input and multiple-output (MU-MIMO) antenna unit, and instructing the user to use this carrier for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed modulation and coding mode on single carrier is used for SPS data transmission, then device complexity is reduced, but reliability deteriorates due to high probability of retransmission
Solution Approach 1:
The patent applies dynamics by transitioning from fixed single-carrier transmission to dynamic multi-carrier selection. The system dynamically chooses among multiple carriers based on channel conditions and MU-MIMO matching gains, making the transmission mode adaptive rather than static. This resolves the contradiction by maintaining low complexity through standardized procedures while achieving high reliability through intelligent carrier selection.
Solution Approach 2:
The patent changes the parameter of transmission carrier from fixed to variable. By selecting different carriers based on channel quality indicators and MU-MIMO matching gains, the system optimizes transmission parameters adaptively. This parameter change enables the system to avoid poor channel conditions and achieve reliable transmission without increasing overall system complexity.
2Ease of operation
If conventional SPS transmission mode is used, then ease of operation is maintained, but productivity deteriorates due to reduced system throughput
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple carriers and their associated transmission parameters before actual data transmission. The system prepares channel condition information and MU-MIMO matching gains in advance, enabling quick and simple carrier selection during operation. This preliminary preparation maintains ease of operation while significantly improving productivity through optimized transmission paths.
Solution Approach 2:
The patent implements feedback mechanisms by continuously monitoring channel conditions and MU-MIMO matching gains for each carrier. This feedback information is used to dynamically select the optimal carrier for SPS data transmission. The feedback loop enables the system to adapt to changing channel conditions, maintaining simple operation procedures while maximizing system throughput through intelligent decision-making.
3Reliability
If multi-carrier selection based on channel conditions and MU-MIMO gain is implemented, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the carrier selection process into distinct, manageable components: channel condition evaluation, MU-MIMO matching gain calculation, and final carrier selection. Each component handles a specific aspect of the decision-making process, reducing overall complexity while maintaining reliable transmission. The segmentation allows the system to process multiple carriers systematically without overwhelming computational burden.
Data Source
AI summary
A method and device for transmitting semi-persistent scheduling (SPS) data reduces the probability of retransmitting a semi-persistent service, and increases the system throughput. The method includes: determining an initial transmission carrier for transmitting SPS data according to channel condition information of each carrier in multiple carriers and a gain of a match of a multi-user multiple-input and multiple-output (MU-MIMO) antenna unit; instructing, to a user, the determined initial transmission carrier for transmitting SPS data; and transmitting the SPS data to the user through the instructed initial transmission carrier for transmitting SPS data. The method and device are mainly applied to a process for transmitting SPS data in a carrier aggregation scenario.