RMSI Sidelink Resource Pool Configuration Exchange
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Solution Overview
Problem
In wireless communication networks, especially in sidelink configurations, the resource pool (RP) configuration of wireless communication devices may be unknown, especially for devices outside the coverage area of a base station or in unlicensed sidelink scenarios, leading to missed sidelink transmissions.
Innovation Solution
The implementation of a mechanism to exchange RP configurations between wireless communication devices using a default minimum resource block (RB) set configuration, where a transmitting device sends a Remaining Minimum System Information (RMSI) message within a minimum RB set common to both devices, including its RP configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If devices use device-to-device sidelink signaling without base station intermediation, then communication efficiency and speed are improved, but reliability deteriorates because resource pool configurations may be unknown leading to missed transmissions
Solution Approach 1:
The transmitting device transmits its resource pool configuration information to the receiving device in advance, before actual sidelink communication begins. This preliminary exchange of configuration data ensures that both devices have the necessary information to reliably communicate without base station intermediation, resolving the contradiction by preparing the communication parameters beforehand.
2Reliability
If a common resource pool configuration is established between devices, then transmission reliability is improved, but device complexity increases due to the need to exchange and synchronize configuration information
Solution Approach 1:
The resource pool configuration information is extracted from the base station control and directly transmitted between devices via RMSI messages. This extraction eliminates the need for complex base station-mediated configuration synchronization, allowing devices to independently establish common configurations while maintaining reliability without excessive complexity.
3Reliability
If resource pool configuration information is transmitted between devices, then transmission reliability is improved, but loss of information increases due to potential missed transmissions during the exchange process
Solution Approach 1:
The receiving device provides feedback to confirm successful reception of the resource pool configuration information. This feedback mechanism ensures that configuration information is reliably exchanged and synchronized between devices, preventing information loss while maintaining the improved transmission reliability that comes from having common configuration knowledge.
Data Source
AI summary
Aspects relate to techniques for exchanging resource pool (RP) configurations between wireless communication devices. A transmitting wireless communication device can transmit a remaining minimum system information (RMSI) message including a RP configuration of the transmitting wireless communication device to at least one receiving wireless communication device. The RMSI message is transmitted within a minimum resource block set that is common to both the transmitting wireless communication device and the at least one receiving wireless communication device. The transmitting wireless communication device may then communicate with the at least one receiving wireless communication device on a sidelink based on the RP configuration.