Coordinating LTE and NR Transmission Timing on Unlicensed Spectrum
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Solution Overview
Problem
The increasing use of multiple wireless communication standards like LTE and NR on unlicensed frequency bands leads to data collisions due to uncoordinated transmission, resulting in inefficiencies and increased latency.
Innovation Solution
Implementing a system where base stations or mobile devices determine the size of data to be sent according to each standard and perform a Listen Before Talk procedure to ensure the frequency channel is clear before transmitting, allowing coordinated transmission times to avoid collisions and optimize data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple wireless communication standards (LTE and NR) transmit data simultaneously over unlicensed frequency bands, then data transfer capacity increases, but data collisions occur due to uncoordinated transmission
Solution Approach 1:
The patent introduces a coordination mechanism that acts as an intermediary between LTE and NR transmitters. This mechanism manages transmission timing and coordinates channel access, preventing simultaneous transmissions that cause collisions while maintaining high data transfer capacity across multiple standards.
Solution Approach 2:
The system performs preliminary coordination actions by determining transmission timing for both LTE and NR data before actual transmission occurs. This advance planning of transmission schedules ensures that coordinated transmission times are established, preventing data collisions while maximizing utilization of unlicensed spectrum resources.
2Reliability
If Listen Before Talk procedures are performed frequently to avoid data collisions, then transmission reliability improves, but communication latency increases
Solution Approach 1:
The coordination mechanism performs preliminary determination of transmission timing for both LTE and NR data before transmission. This advance scheduling reduces the need for frequent Listen Before Talk procedures during actual data transfer, thereby maintaining transmission reliability while minimizing communication latency.
Solution Approach 2:
Once transmission timing is coordinated and the channel is clear, the system maintains continuous transmission for both LTE and NR data without interruption. This continuity reduces the frequency of Listen Before Talk procedures needed during active data transfer, improving efficiency and reducing latency while preserving reliability.
3Productivity
If unlicensed spectrum is shared among multiple wireless networks, then spectrum utilization increases, but data collisions and transmission inefficiencies occur
Solution Approach 1:
The patent introduces a coordination mechanism that mediates access to unlicensed spectrum among multiple wireless networks. This intermediary manages transmission timing and coordinates channel access, enabling high spectrum utilization while preventing data collisions and maintaining transmission efficiency across LTE, NR, and other wireless standards.
Solution Approach 2:
The system performs preliminary coordination of transmission timing for multiple wireless networks before they access the unlicensed spectrum. This advance scheduling maximizes spectrum utilization by allowing multiple networks to transmit efficiently while preventing collisions through pre-coordinated transmission times.
Data Source
AI summary
Systems and methods are disclosed for coordinating transmission and reception of data according to multiple communication standards over a frequency band. In particular, one or more base stations/mobile electronic devices may determine a first data size of first data to be sent conforming to a first communication standard and a second data size of second data conforming to a second communication standard. A first time period may then be determined for which to send the first data based on the first data size, and a second time period may be determined for which to send the second data based on the second data size. In response to determining that the frequency channel is clear of other transmissions, the first data may be sent according to the first standard in the first time period, and the second data may be sent according to the second standard in the second time period.