Uplink MIMO Control via Dynamic PCI Selection
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Solution Overview
Problem
In existing WCDMA systems, User Equipment (UE) can only send uplink data using a single antenna, limiting the transmission rate and not utilizing multi-antenna technology for uplink data transmission.
Innovation Solution
The UE receives Precoding Control Indications (PCIs), determines a target PCI based on statistics and sources, and performs uplink MIMO sending control to enable the use of multi-antenna technology for uplink data transmission, effectively increasing the transmission rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If single-antenna technology is used for uplink data transmission, then device complexity is reduced, but transmission rate is limited
Solution Approach 1:
The patent implements dynamic MIMO scheduling for uplink transmission, where the UE can adaptively switch between single-antenna and multi-antenna modes based on channel conditions and network requirements. The UE determines a target PCI (Precoding Control Indication) from received PCIs and performs uplink MIMO sending control dynamically, allowing the system to optimize transmission rate while managing device complexity through conditional activation of multi-antenna functionality.
2Productivity
If multi-antenna technology is not used for uplink, then ease of operation is maintained, but transmission rate is limited
Solution Approach 1:
The UE autonomously determines the target PCI based on statistics of received PCIs and their sources, performing self-service MIMO scheduling without requiring complex network-side coordination for each transmission decision. The UE independently manages the complexity of multi-antenna operation by autonomously selecting appropriate precoding configurations, thereby maintaining ease of operation while enabling higher transmission rates through MIMO technology.
3Loss of time
If single-antenna transmission is used, then device complexity is reduced, but data transmission delay increases
Solution Approach 1:
The UE performs preliminary determination of the target PCI by analyzing statistics of received PCIs and their sources before actual uplink data transmission. This advance preparation allows the UE to have the MIMO configuration ready, reducing the time required for transmission setup and thereby decreasing data transmission delay while managing device complexity through pre-computed scheduling decisions.
Data Source
AI summary
In the field of communications, an information processing method, device, and system are provided. The information processing method includes: receiving Precoding Control Indications (PCIs); determining a target PCI according to statistics of the PCIs and/or sources of the PCIs; and performing uplink Multiple Input Multiple Output sending control according to the target PCI. A User Equipment and an information processing system are also provided.