Fixed Time Unit Synchronization Signal Detection
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Solution Overview
Problem
In high-frequency communication scenarios, the complexity of designing and detecting broadcast channels and synchronization signals is increased due to varying resource quantities, leading to complex blind detection processes for user equipment, especially in LTE systems where transmission cycles are not fixed across resources.
Innovation Solution
A signal sending apparatus and method that determines fixed time units within each time window for transmitting synchronization signals and broadcast channels, allowing for consistent detection by user equipment, using modules to determine and transmit these signals in specific time units, thereby reducing complexity and improving detection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time-division polling transmission based on multiple resources is used to ensure wide coverage for all users, then coverage reliability is improved, but detection complexity for user equipment increases significantly
Solution Approach 1:
The patent segments the detection process by dividing resources into groups and assigning each group a specific search space. This allows user equipment to separately detect PDCCH in each search space corresponding to different resource groups, rather than performing blind detection across all resources simultaneously. The segmentation reduces detection complexity while maintaining coverage reliability through structured polling transmission.
Solution Approach 2:
The patent applies preliminary action by pre-configuring search spaces and resource group associations before detection occurs. User equipment is provided with information about which search spaces correspond to which resource groups in advance, allowing the equipment to prepare detection strategies beforehand. This preliminary configuration reduces the computational burden during actual detection while ensuring reliable coverage.
2Measurement precision
If blind detection is performed on broadcast channel or synchronization signal in each frame with varying resource quantities, then signal detection capability is maintained, but design complexity and detection complexity are greatly increased
Solution Approach 1:
The patent segments the resource space into distinct groups and assigns each group to specific search spaces. This segmentation allows for standardized detection procedures within each segment rather than requiring complex adaptive detection across varying resource quantities. The structured segmentation maintains signal detection capability while reducing design complexity by creating predictable detection patterns.
Solution Approach 2:
The patent changes the parameter of resource organization from variable quantities to fixed resource groups with associated search spaces. By transforming the resource structure into a parameterized system where each resource group has a predetermined search space, the patent maintains detection capability across different scenarios while reducing design complexity through parameter standardization.
3Adaptability or versatility
If the number of subframes for blind detection varies depending on resource quantity, then adaptability to different resource configurations is achieved, but detection time and processing complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-establishing the mapping between resource groups and search spaces before detection occurs. User equipment receives configuration information in advance that defines which search spaces correspond to which resource groups. This preliminary setup enables efficient detection without requiring variable numbers of subframes, thereby reducing detection time while maintaining adaptability to different resource configurations.
Solution Approach 2:
The patent segments the detection process into independent search space evaluations based on resource group associations. Rather than requiring sequential blind detection across all possible subframes, the segmented approach allows equipment to efficiently search within predefined search spaces corresponding to active resource groups, reducing overall detection time while maintaining configuration adaptability.
Data Source
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AI summary
The present invention provides a signal sending apparatus, a signal detection apparatus, a signal sending and detection system, a signal sending method, and a signal detection method. The apparatus determines a time unit that is in each time window and that is used to transmit a synchronization signal, and transmits the synchronization signal in the determined time unit in each time window. Therefore, a synchronization signal is always located in a time unit that has a fixed location in each time window, so that a device at a receive end needs to perform detection only in a fixed time unit in each time window, thereby reducing complexity of designing and detecting the synchronization signal.