5G Common Control Channel Frequency Division Multiplexing
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Solution Overview
Problem
In 5G mobile network systems, the existing design of common control channels faces challenges in achieving high resource utilization, leading to increased latency and complexity in system design due to the need for multiple beam sweeping timings.
Innovation Solution
The proposed solution configures a common control channel and primary/secondary synchronization signals in a subband where user equipment resides, using frequency division multiplexing, allowing the common control channel to occupy resources alongside the synchronization signals, thereby reducing beam sweeping timings and system complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different signals and channels adopt different beam sweeping timings, then each signal can be transmitted optimally, but the number of beam sweeping timings increases significantly, causing increased latency and system design complexity
Solution Approach 1:
The patent combines the beam sweeping timing for common control channels with the beam sweeping timing for SS/PBCH blocks, so that both signals use the same time resources for beam sweeping. This merging approach reduces the total number of beam sweeping timings while ensuring that both signals can be transmitted effectively across different beams, thereby reducing system complexity without sacrificing transmission quality.
2Reliability
If different signals and channels adopt different beam sweeping timings, then each signal can be transmitted optimally, but the latency of HARQ feedback increases
Solution Approach 1:
By merging the beam sweeping timing of common control channels with SS/PBCH blocks, the patent reduces the total time required for beam sweeping operations. This time consolidation directly reduces HARQ feedback latency, as the system no longer needs to wait for separate beam sweeping sequences for different signals.
3Ease of manufacture
If common control channel uses separate resources from SS/PBCH block, then resource allocation is simple, but resource utilization is low
Solution Approach 1:
The patent allocates common control channels and SS/PBCH blocks to different frequency domain resources within the same time domain resources. This dimensional shift from separate time resources to different frequency subbands allows for high resource utilization while maintaining clear resource allocation rules, as the frequency domain separation provides natural resource demarcation.
Data Source
AI summary
The present disclosure provides a method for configuring and receiving a common control channel, and a device for configuring and receiving a common control channel. The method for configuring a common control channel includes: configuring a common control channel and a SS/PBCH block in a subband where a user equipment resides in a frequency division multiplexing manner, and transmitting the common control channel by using configured resources. Embodiments of the present disclosure may improve resource utilization by configuring the common control channel.