Communication Device Special Symbols UL Coverage
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Solution Overview
Problem
Current transmission resources in a serving cell are insufficient to efficiently communicate signals between a communication device and a network, leading to challenges in enhancing UL coverage and reducing transmission latency.
Innovation Solution
A method and communication device that utilize special symbols within a time period, comprising DL and UL sub-bands in different frequency regions, to manage UL transmissions. The device receives configurations from the network indicating these special symbols and performs UL transmissions accordingly, determining whether to transmit based on overlap with UL symbols or special symbols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current transmission resources in the serving cell are used, then the existing communication infrastructure is maintained, but the UL coverage enhancement and transmission latency reduction are insufficient
Solution Approach 1:
The patent segments the time-frequency resources by introducing special symbols within existing time periods, dividing the serving cell resources into conventional resources and special symbol resources. This segmentation allows UL transmissions to occur in designated special symbols without disrupting existing communication infrastructure, thereby enhancing UL coverage while maintaining transmission efficiency.
Solution Approach 2:
The patent introduces a new dimension to resource allocation by adding special symbols in the time domain within existing time periods. This dimensional expansion creates additional UL transmission opportunities without requiring extra frequency resources or time periods, thus improving UL coverage and reducing transmission latency while maintaining productivity.
2Reliability
If transmission resources are increased to enhance UL coverage, then the UL coverage is improved, but the device complexity and resource management overhead increase
Solution Approach 1:
The special symbols are designed to serve multiple functions: they enable UL transmissions for coverage enhancement, maintain compatibility with existing downlink operations, and provide flexible resource allocation. This multi-functionality allows the system to enhance UL coverage without requiring separate dedicated resources, thereby avoiding increased device complexity.
Solution Approach 2:
The patent changes the parameter of symbol usage by reconfiguring certain symbols as special symbols with UL transmission capability within existing time periods. This parameter change allows the system to enhance UL coverage by utilizing existing infrastructure with modified symbol properties, avoiding the need for complex new resource management mechanisms.
3Loss of time
If more transmission resources are allocated, then transmission latency is reduced, but the resource utilization efficiency of the serving cell decreases
Solution Approach 1:
The patent performs preliminary action by pre-configuring special symbols within existing time periods for potential UL transmissions. This allows the system to quickly utilize these pre-allocated resources when needed, reducing transmission latency without requiring dynamic resource allocation that would reduce overall resource utilization efficiency.
Solution Approach 2:
The special symbols provide continuous UL transmission opportunities within the existing time-frequency grid, ensuring that UL transmissions can occur without waiting for the next available resource. This continuity reduces transmission latency while maintaining efficient use of the serving cell resources by integrating UL opportunities into the existing continuous resource structure.
Data Source
AI summary
A method for handling a communication with a serving cell of a communication device includes: receiving a first configuration, wherein the first configuration indicates a set of downlink symbols, a set of flexible symbols and/or a set of uplink symbols; receiving a second configuration for the serving cell, wherein the second configuration indicates a set of special symbols comprising downlink sub-band(s) and uplink sub-band(s); receiving a third configuration comprising a first power information and a second power information from the network; receiving an indicator for a uplink transmission in a bandwidth part of the serving cell; performing the uplink transmission according to a first resource configuration, in response to the uplink transmission overlapping with a uplink symbol in the set of uplink symbols; and determining whether to perform the uplink transmission, in response to the uplink transmission overlapping with a special symbol in the set of special symbols.