Multi-Standard Base Station Phase Compensation
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Solution Overview
Problem
Multi-standard base station sites, which support multiple radio access technologies, often fail to fully utilize their radio and multi-antenna infrastructure due to lack of optimization for multi-antenna operation, leading to inefficient use of available resources and potential performance degradation.
Innovation Solution
A method is introduced for operating multi-standard base station sites that includes a first base station module for one radio access technology and a second base station module for another, both utilizing a common multi-antenna infrastructure with transmitter branches. The first module determines phase/time compensation information based on feedback from user equipment terminals and applies it to both technologies, ensuring relative phase/time error compensation between transmitter branches, thereby enhancing the efficiency of antenna output power for both technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-standard base station site uses a common multi-antenna infrastructure for multiple radio access technologies, then device complexity is reduced and resource utilization is improved, but phase/time errors between transmitter branches degrade transmission performance
Solution Approach 1:
The patent implements a common radio and multi-antenna infrastructure that serves multiple radio access technologies (LTE, WCDMA, HSPA) simultaneously. The same physical antennas and transmitter branches are shared across different standards, reducing device complexity while enabling multi-standard operation. This is achieved through a unified antenna pool that can be dynamically allocated to different RATs based on demand.
Solution Approach 2:
The patent introduces phase/time compensation mechanisms that dynamically adjust transmission parameters to correct phase/time errors between transmitter branches. By changing the phase and timing parameters of signals transmitted from different branches, the system compensates for hardware imperfections and maintains transmission performance across multiple radio access technologies.
2Reliability
If phase/time compensation is performed separately for each radio access technology, then transmission performance for each technology is optimized, but processing time and system complexity increase
Solution Approach 1:
The patent combines phase/time compensation operations across multiple radio access technologies into a unified process. Instead of performing separate compensation for each RAT, the system performs joint compensation that simultaneously optimizes transmission for LTE, WCDMA, and HSPA. This merging of compensation operations reduces processing time and eliminates redundant calculations while maintaining transmission performance across all technologies.
Data Source
AI summary
In a multi-standard base station (BS) site, a first (BS) module operates in multi-antenna transmission mode according to a first radio access technology (RAT) by means of multiple transmitter branches. The first BS module determines phase/time compensation information based on UE feedback information representative of precoding matrix index, PMI. The multi-standard BS site performs, for operation according to the first RAT, a first compensation for a relative phase/time error between at least two of the transmitter branches based on the phase/time compensation information. A second BS module operates for transmission according to a second RAT by means of at least two of the multiple transmitter branches. The multi-standard BS site performs, for operation according to the second RAT, a second compensation for a relative phase/time error between at least two of the transmitter branches based on the phase/time compensation information from the first BS module.