UL Subband Configuration Around SS/PBCH Blocks in Wireless Networks
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Solution Overview
Problem
Existing wireless communication systems face limitations in communication flexibility and efficiency, particularly in managing uplink subbands to avoid overlap with synchronization signal/broadcast channel blocks, which can impact communication capacity and reliability.
Innovation Solution
The system configures uplink subbands to avoid regions containing synchronization signal/broadcast channel blocks by using radio resource control parameters, disabling the UL subband during periods of time division duplex patterns, and determining the duration based on the mapping of these blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink subbands are configured to avoid synchronization signal/broadcast channel blocks, then communication reliability is improved, but communication flexibility deteriorates
Solution Approach 1:
The patent implements dynamic configuration of uplink subbands by disabling specific subbands during TDD patterns when synchronization signal/broadcast channel blocks are present. This dynamic adjustment resolves the contradiction by adapting the uplink resource allocation to the actual downlink signal requirements, ensuring reliable synchronization while maintaining flexible resource management capability.
Solution Approach 2:
The system changes the configuration parameters of uplink subbands based on the presence and mapping of synchronization signal/broadcast channel blocks. By modifying the active/uplink subband configuration dynamically, the system achieves both improved reliability (avoiding interference) and maintained flexibility (through parameter-based control).
2Object-affected harmful factors
If uplink subbands are disabled during TDD patterns, then interference is reduced, but resource utilization efficiency deteriorates
Solution Approach 1:
Instead of disabling all uplink subbands globally, the patent applies local quality control by disabling only specific uplink subbands that overlap with synchronization signal/broadcast channel blocks while keeping other subbands active. This localized approach reduces interference effectively while maintaining resource utilization efficiency in non-conflicting subbands.
Solution Approach 2:
The uplink bandwidth is segmented into multiple subbands, and the system selectively disables only those subbands that conflict with downlink synchronization signals. This segmentation allows the system to protect against interference in specific regions while maintaining productivity in other regions, resolving the contradiction between interference reduction and resource utilization.
Data Source
AI summary
A terminal device is described. The terminal device includes receiving circuitry configured to receive a downlink (DL) channel to convey a first one or more radio resource control (RRC) parameters to indicate a location of an uplink (UL) subband in a time domain and a second one or more RRC parameters to indicate a location of one or more synchronization signal/physical broadcast channel (SS/PBCH) blocks. The terminal device also includes processing circuitry configured to configure the UL subband based on the first one or more RRC parameters, and configured to disable the UL subband in a region including at least one SS/PBCH block from the one or more SS/PBCH blocks.