Dynamic Resource Scheduling for Unlicensed Spectrum Data Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, especially on unlicensed spectra, the uncertainty of channel occupancy by other communication systems leads to failures in data transmission when fixed time-domain resources are allocated, resulting in low data success rates.
Innovation Solution
The method involves determining the starting position of the first time-domain resource for data transmission based on a second time-domain resource used for sending scheduling instructions, ensuring the first time-domain resource starts after the second time-domain resource and adjusts accordingly, thereby improving data transmission success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed time-domain resources are allocated for data transmission, then resource scheduling is simplified, but data transmission success rate decreases due to channel occupancy uncertainty
Solution Approach 1:
The patent applies dynamics by making the time-domain resource starting position variable rather than fixed. The starting position is dynamically adjusted based on the actual channel occupancy status detected before transmission, allowing the system to adapt to changing spectrum conditions and avoid collisions with other communication systems.
Solution Approach 2:
The patent implements preliminary action through the listen-before-talk mechanism. Before allocating and using time-domain resources for data transmission, the system performs a listening phase to detect channel occupancy status in advance. This preliminary detection prevents transmission failures by identifying occupied channels before data transmission begins.
2Ease of manufacture
If the time-domain resource starting position is fixed, then resource allocation is simple, but the resource may be occupied by other systems leading to transmission failure
Solution Approach 1:
The patent applies parameter changes by modifying the starting position parameter of the time-domain resource based on detected channel conditions. Instead of using a fixed starting position, the system adjusts this parameter dynamically according to the listen-before-talk results, ensuring the resource is both simple to allocate and reliable in terms of channel availability.
3Reliability
If dynamic adjustment of time-domain resource starting position is implemented, then data transmission success rate improves, but resource scheduling complexity increases
Solution Approach 1:
The patent reduces the complexity of dynamic adjustment by performing the listening and detection action in advance before resource allocation. This preliminary action provides the information needed to make simple, informed decisions about resource starting positions, avoiding the need for complex real-time scheduling algorithms while still achieving high transmission success rates.
Data Source
AI summary
A resource indication method for an unlicensed spectrum includes: receiving, by a terminal, a scheduling instruction sent by an access network device; and determining, by the terminal, a first time domain resource according to the scheduling instruction, in which the first time domain resource is a time domain resource configured to transmit data, a start position of the first time domain resource is obtained based on a second time domain resource, and the second time domain resource is a time domain resource configured to send the scheduling instruction.