Resource Block Segmentation for Flexible Wireless Control Transmission
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Solution Overview
Problem
Existing LTE systems face inefficiencies in transmitting common control signals with wide area coverage using multiple antenna ports, leading to high overhead and energy inefficiency, and lack flexibility in seamlessly transitioning between common and UE-specific control message transmissions.
Innovation Solution
The method involves allocating data into non-overlapping regions within resource blocks, each associated with unique reference symbols and antenna ports, allowing for efficient channel estimation and demodulation, and enabling flexible transmission of both common and UE-specific control messages by optimizing the use of antenna ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple antenna ports are used to transmit common control signals with wide area coverage, then the coverage area is improved, but the overhead and energy consumption increase
Solution Approach 1:
The resource block is divided into multiple non-overlapping regions, each associated with a specific antenna port. This segmentation allows the system to transmit common control signals using only the necessary antenna ports rather than all antenna ports, reducing overhead and energy consumption while maintaining wide area coverage.
Solution Approach 2:
Instead of using all antenna ports for common control signal transmission, the system uses only the partial set of antenna ports that are necessary for the current transmission needs. This reduces the overhead and energy consumption associated with transmitting reference symbols and control signals across all antenna ports.
2Reliability
If multiple antenna ports are used for control signal transmission, then the robustness of the control channel is improved, but the overhead increases
Solution Approach 1:
By segmenting the resource block into regions associated with different antenna ports, the system can selectively activate only the necessary antenna ports for control signal transmission. This maintains control channel robustness through diversity while reducing overhead by avoiding transmission on unnecessary antenna ports.
Solution Approach 2:
Different regions within the resource block are associated with different antenna ports, allowing the system to optimize the transmission quality for each region. This local quality approach ensures that control signals are transmitted with appropriate robustness only where needed, reducing overall overhead.
3Adaptability or versatility
If the system transmits both common and UE-specific control messages, then the versatility is improved, but the complexity of managing antenna ports increases
Solution Approach 1:
The resource block structure with multiple non-overlapping regions associated with different antenna ports serves as a universal framework that can accommodate both common control messages and UE-specific control messages. This multi-functional design allows the same physical resources to support different transmission types without increasing system complexity.
Solution Approach 2:
The system can dynamically allocate different regions to different antenna ports and transmission types based on current needs. This dynamic allocation allows seamless transitions between common and UE-specific control message transmissions, maintaining versatility while managing complexity through flexible resource assignment.
Data Source
AI summary
Devices and methods for transmitting information in resource blocks between a base station and one or more communication devices are disclosed. In each resource block (RB) used for a data or control channel transmission, a plurality of non-overlapping regions of resource elements (REs) are defined. Each region is associated with one or multiple unique reference symbols (RSs), and may be further associated with one or more antenna ports. When user equipment (UE) demodulates the information it receives in a particular region of an RB, it uses the RS and/or antenna port associated with that region. The RS and/or antenna port information may be used, for example, to estimate a channel of the communication network or to demodulate and decode the data contained within the associated regions.