Dynamic Multiantenna Parameter Adjustment for SPS Wireless Communication
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Solution Overview
Problem
In wireless communication systems supporting Semi-Persistent Scheduling (SPS) and massive MIMO, the limited number of beamforming vectors for User Equipment (UE) restricts data transmission efficiency, as only one transmission mode can be employed during SPS, impacting system performance and flexibility.
Innovation Solution
A method where the UE dynamically adjusts multiantenna parameters through secondary signaling, allowing for different beamforming configurations during SPS transmission, improving flexibility and reducing overheads by configuring multiple functions in a single transmission block.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE employs a same receiving beamforming vector for SPS transmission in multiple time units, then the transmission reliability is improved, but the system performance and flexibility deteriorate due to limited beamforming vectors
Solution Approach 1:
The patent applies dynamics by enabling the UE to dynamically switch between different receiving beamforming vectors for SPS transmissions across multiple time units. Instead of being fixed to a single beamforming vector, the UE can adaptively select different beams based on channel conditions and base station transmissions, thereby maintaining transmission reliability while improving data transmission efficiency and system flexibility.
2Productivity
If a base station provides services to other UEs in timeslots occupied by SPS transmission, then the spectrum utilization is improved, but the SPS transmission results in only one transmission mode of beamforming being employed, impacting system performances
Solution Approach 1:
The patent enables dynamic beamforming mode selection for SPS transmissions, allowing the system to adaptively choose between different beamforming modes based on traffic conditions and channel state. This dynamic capability ensures that even when the base station serves other UEs in shared timeslots, the SPS transmission can maintain optimal performance by selecting the most appropriate beamforming mode, thereby resolving the contradiction between spectrum utilization and system performance.
3Area of stationary object
If a wider beam is employed for SPS transmission, then the coverage area is improved, but the transmission efficiency is reduced obviously
Solution Approach 1:
The patent implements dynamic beamwidth adjustment for SPS transmissions. The system can adaptively select between wider beams for extended coverage and narrower beams for higher transmission efficiency based on real-time channel conditions and quality requirements. This dynamic beamwidth control resolves the contradiction by allowing the system to optimize between coverage area and transmission efficiency rather than being constrained to a fixed beamwidth.
4Adaptability or versatility
If multiple beamforming configurations are supported during SPS transmission, then the flexibility and system performance are improved, but the control signaling overheads increase
Solution Approach 1:
The patent makes the second signaling serve multiple functions: it not only provides dynamic beamforming configuration for SPS transmissions but also continues to schedule dynamic data transmissions. This multi-functionality allows the system to support multiple beamforming configurations and improve flexibility without proportionally increasing control signaling overheads, as the same signaling mechanism handles both SPS and dynamic scheduling tasks.
Solution Approach 2:
The patent combines SPS configuration and dynamic scheduling into a unified signaling approach. By merging the functionality of SPS beamforming configuration with dynamic data scheduling in the second signaling, the system achieves multiple beamforming configurations with reduced overall signaling overhead, as the same signaling framework serves dual purposes rather than requiring separate signaling mechanisms.
Data Source
AI summary
The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. The UE receives a first signaling in a first time-frequency resource, then receives a second signaling in a second time-frequency resource, or transmits a second signaling in a second time-frequency resource, and finally operates a first radio signal; the first signaling is a Semi-Persistent Scheduling (SPS) signaling, and the first time-frequency resource is located before the second time-frequency resource in time domain; the first signaling comprises first configuration information, the first configuration information is applicable to the first radio signal; the second signaling is used for determining a first multiantenna related parameter. The disclosure adjusts the multiantenna related parameter for semi-persistent data transmission through a dynamic signaling, thus improves the efficiency of data transmission and the flexibility of scheduling and improves the overall performance of system.