Distributed PDCCH Resource Allocation for Wireless Control Signaling
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Solution Overview
Problem
Current wireless communication networks face inefficiencies in resource allocation and data transmission due to the need for extensive control information, which occupies significant resources and limits data capacity, especially in systems with multiple user equipment.
Innovation Solution
The implementation of a distributed physical downlink control channel (PDCCH) that allocates control information across frequency sub-bands, allowing for efficient resource usage by eliminating redundant bits and enabling data transmission in previously reserved control resource sets, thereby optimizing resource allocation and reducing the overall resource requirements for control information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information is transmitted using traditional centralized PDCCH, then control information can be delivered to user equipment, but significant network resources are occupied and data capacity is limited
Solution Approach 1:
The patent segments the control information transmission by dividing the frequency spectrum into multiple sub-bands and distributing PDCCH across these sub-bands. Each user equipment monitors only specific sub-bands allocated to it, rather than monitoring all frequency resources. This segmentation reduces the overall network resource consumption for control information while maintaining reliable delivery to each user device.
2Reliability
If more frequency resources are allocated to control information, then control reliability improves, but available resources for data transmission decrease
Solution Approach 1:
The patent applies local quality by allocating control information resources locally to each user equipment based on their specific needs and channel conditions. Each user equipment is assigned specific frequency sub-bands for control information monitoring, rather than using a uniform allocation across all users. This allows optimal use of resources where needed while preserving capacity elsewhere for data transmission.
3Productivity
If distributed PDCCH is implemented across multiple frequency sub-bands, then resource allocation efficiency improves, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring and informing user equipment about which frequency sub-bands contain their control information. The network provides allocation information to each user equipment in advance, so devices don't need to blindly search all frequency sub-bands. This preliminary configuration simplifies the receiving device's task while maintaining the resource efficiency benefits of distributed PDCCH.
Data Source
AI summary
Aspects of the disclosure provide an apparatus that includes a receiving circuit and a baseband processing circuit. The receiving circuit is configured to receive signals transmitted from another apparatus to the apparatus and generate digital samples in response to the received signals. The received signals have a plurality of frequency sub-bands allocated as transmission resources. A specific frequency sub-band is allocated to the apparatus to carry data and control information to the apparatus. The baseband processing circuit is configured to receive the digital samples, process the digital samples to generate symbols in the respective frequency sub-bands, and decode the symbols in the respective frequency sub-bands to determine the specific frequency sub-band that is allocated to the apparatus.