Granted Resource Scheduling for Duplicated V2V Data
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Solution Overview
Problem
Existing communication systems lack a defined process for configuring transmission resources in scenarios involving Carrier Aggregation (CA) or short Transmission Time Intervals (sTTIs), which affects the efficiency and reliability of data transmission in Vehicle to Vehicle (V2V) communication.
Innovation Solution
A method for resource scheduling that involves a network device configuring and indicating granted resources to a terminal device for data transmission on specific logical channels, allowing for flexible allocation of resources for both duplicated and non-duplicated data, and supporting various transmission modes including CA and sTTIs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a base station allocates transmission resources for V2V communication in conventional LTE systems, then the system can maintain basic communication functionality, but the spectrum efficiency is low and transmission delay is high
Solution Approach 1:
The patent replaces the conventional base station-controlled resource allocation mechanism with a peer-to-peer resource selection mechanism. VUEs independently select and reserve resources from a pool of available resources without requiring base station intervention, thereby eliminating the inefficiencies of centralized scheduling while maintaining communication reliability through direct device-to-device transmission.
Solution Approach 2:
The patent implements self-service by enabling VUEs to autonomously perform resource selection, reservation, and transmission without relying on base station allocation. Each VUE independently manages its own transmission resources, selecting from available resources and reserving them for specific transmission occasions, which dramatically improves spectrum efficiency while maintaining reliable communication.
2Reliability
If Carrier Aggregation is used to transmit duplicated PDCP PDUs on different physical carriers, then frequency diversity gain is achieved, but the existing resource configuration process is undefined for CA scenarios
Solution Approach 1:
The patent segments the resource allocation process into independent resource selection and reservation operations. Each VUE independently selects resources for its transmissions and reserves them through control information, allowing duplicated PDCP PDUs to be transmitted on different physical carriers without requiring complex coordinated configuration. This segmentation simplifies the overall system complexity while maintaining frequency diversity benefits.
3Speed
If short Transmission Time Intervals are used to improve delay performance, then transmission speed increases, but no resource configuration process is defined in conventional art
Solution Approach 1:
The patent introduces dynamic resource reservation mechanisms that adapt to short transmission time intervals. VUEs perform resource selection and reservation at appropriate timing intervals before each transmission, allowing the system to dynamically allocate resources for sTTI transmissions. This dynamic approach enables fast transmission speeds while managing scheduling complexity through standardized reservation procedures.
Data Source
AI summary
Provided are resource scheduling methods, a terminal device and a network device. The method includes that: a first terminal device receives indication information and resource grant information from a network device, the resource grant information being to indicate a granted resource allocated to the first terminal device by the network device and the indication information being to indicate that the granted resource is capable of transmitting duplicated data; and the first terminal device transmits the duplicated data to a second terminal device through the granted resource according to the indication information and the resource grant information.