Sidelink Resource Allocation for LTE-NR AGC Oversaturation
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Solution Overview
Problem
The coexistence of LTE and NR sidelink transmissions on the same channel leads to Automatic Gain Control (AGC) oversaturation for LTE SL UEs, causing reception failures due to NR SL transmissions in slots other than the first slot, and there is a lack of specific schemes for dynamic resource pool sharing between LTE and NR SL.
Innovation Solution
A method and apparatus for allocating sidelink resources that involve determining a candidate resource set and performing resource exclusion based on information from both LTE and NR radio access modules, ensuring dynamic resource pool sharing and restricting NR SL transmissions to the first slot of a sub-frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If NR SL transmissions are allowed on any slot within a sub-frame, then resource utilization efficiency is improved, but AGC oversaturation occurs for LTE SL UEs causing reception failures
Solution Approach 1:
The patent segments the sub-frame into specific slots for NR SL transmissions, restricting NR SL to transmit only in the first slot of a sub-frame. This segmentation prevents NR SL transmissions from occurring in slots that would cause AGC oversaturation for LTE SL UEs, thereby resolving the contradiction between resource utilization and reception reliability.
Solution Approach 2:
The patent applies local quality by assigning different transmission characteristics to different slots within a sub-frame. Specifically, NR SL is permitted to transmit only in the first slot while other slots are reserved for LTE SL transmissions, creating localized transmission zones that prevent interference and AGC oversaturation issues.
2Adaptability or versatility
If dynamic resource pool sharing is implemented between LTE SL and NR SL, then resource allocation flexibility is improved, but resource conflict and interference occur
Solution Approach 1:
The patent segments the resource pool by time slots, allowing LTE SL and NR SL to share the same frequency resources but in different time slots. This temporal segmentation enables dynamic resource pool sharing while preventing resource conflicts and interference between the two systems.
Solution Approach 2:
The patent implements dynamic resource allocation where NR SL can flexibly use the first slot of sub-frames when needed, while LTE SL uses other slots. This dynamic time-division sharing approach provides adaptability while avoiding persistent resource conflicts.
Data Source
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AI summary
The present application relates to the technical field of communications. Provided are a sidelink resource allocation method and apparatus, and a sidelink device and a medium. The method, which is applied to a first sidelink device, comprises: determining a candidate resource set; and executing resource exclusion according to first information of a first wireless access module and/or second information of a second wireless access module, and the candidate resource set.