Multi-Slot Resource Indication for Low-Overhead Frequency Signaling
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Solution Overview
Problem
Existing communication systems in LTE networks with V2X technology are limited by signaling overheads when indicating frequency domain resources, as they can only indicate one resource position in a subsequent slot, which affects data transmission efficiency and reliability.
Innovation Solution
A method and apparatus that use a single value of resource indication information to indicate the frequency domain positions of multiple resources in different slots, allowing for reduced signaling overheads and improved data transmission reliability by determining the positions of first and second resources using a value-based approach.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If resource indication information indicates only one frequency domain resource position in a subsequent slot, then the signaling format is simple, but the data transmission efficiency and reliability deteriorate due to inability to indicate multiple resources
Solution Approach 1:
The resource indication value is segmented to encode multiple frequency domain resource positions. Instead of indicating a single resource, the indication value is divided into multiple parts that collectively represent positions of multiple resources across different slots, enabling efficient resource allocation without increasing signaling format complexity
Solution Approach 2:
The resource indication information is designed to serve multiple functions simultaneously. A single indication value can indicate frequency domain positions of multiple resources in different slots, making the signaling mechanism universal and multi-functional, thereby improving data transmission efficiency without requiring separate indication mechanisms for each resource
2Loss of energy
If resource indication information indicates only one frequency domain resource position, then the signaling overhead is low, but the data transmission reliability worsens due to lack of retransmission resource indication
Solution Approach 1:
The resource indication information preliminarily indicates multiple frequency domain resource positions including potential retransmission resources. By pre-indicating these positions in advance, the system prepares for possible retransmissions without requiring additional signaling overhead when retransmission is needed, thus improving reliability while maintaining low signaling overhead
Solution Approach 2:
The indication value parameters are changed to encode multiple resource positions. By modifying the parameter structure of the resource indication information, the system can represent multiple frequency domain positions within the same signaling overhead, enabling reliable retransmission resource indication without increasing energy loss
3Measurement precision
If a single resource position is indicated per indication value, then the indication precision is high for that single resource, but the overall resource utilization efficiency deteriorates
Solution Approach 1:
Multiple frequency domain resource positions are merged into a single resource indication value. The indication mechanism combines information about multiple resource positions across different slots into one unified indication, maintaining precision for each individual resource while improving overall resource utilization efficiency through consolidated signaling
Data Source
AI summary
In the field of communications technologies, disclosed are a resource indication method, a resource determining method, and an apparatus, to indicate different resources by using a value of same resource indication information, and can be applied to an internet of vehicles, for example, vehicle-to-everything (V2X), long term evolution-vehicular (LTE-V), and vehicle-to-vehicle (V2V), or in fields such as device-to-device (D2D), intelligent driving, and intelligent connected vehicles. The method includes: determining a first resource in a first slot and a second resource in a second slot, where the first resource and the second resource are used to send data; and sending resource indication information in a third slot, where a value of the resource indication information is used to indicate a frequency domain position of the first resource and a frequency domain position of the second resource, and the second slot and the first slot are later than the third slot.