D2D Enabled Node Receiver Adaptation for Interference Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, D2D communication poses challenges in resource sharing and interference management between D2D and cellular operation modes, particularly in coordinating time-frequency resources and radio circuitry usage.
Innovation Solution
A D2D enabled node and method that allow simultaneous operation on different carrier frequencies for D2D and cellular communication, adapting receiver configurations to prioritize and ensure optimal cellular DL performance by determining the need for adaptation and establishing time relations between D2D and cellular operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single receiver is shared between D2D and cellular operations, then device complexity is reduced, but interference between operations increases
Solution Approach 1:
The receiver configuration is made dynamic by allowing adaptive switching between D2D and cellular reception modes based on operational requirements. The system dynamically adjusts receiver parameters such as frequency tuning, gain, and filtering characteristics to optimize performance for the current operation type while minimizing interference with the other operation.
Solution Approach 2:
The invention changes receiver parameters including frequency offset, bandwidth, and timing advance dynamically depending on whether the receiver is used for D2D or cellular operations. By adjusting these parameters appropriately for each operation type, the system reduces mutual interference while maintaining functionality with a single shared receiver.
2Adaptability or versatility
If D2D and cellular operations are performed simultaneously on different carrier frequencies, then communication versatility is improved, but resource coordination complexity increases
Solution Approach 1:
The system segments time resources by introducing measurement gaps that divide continuous operation into distinct phases. During these gaps, the receiver is dedicated to cellular measurements, while outside gaps it can serve D2D operations. This temporal segmentation simplifies resource coordination by creating clear boundaries between operations that share the receiver.
Solution Approach 2:
The invention introduces a time dimension to resource coordination by implementing measurement gaps and timing relationships. Instead of trying to coordinate frequency resources only, the system adds the temporal dimension of when measurements occur versus when D2D communication occurs, thereby managing complexity through time-based resource allocation.
3Reliability
If cellular DL measurements are performed, then mobility performance is maintained, but positioning measurement accuracy may be degraded
Solution Approach 1:
The system performs cellular DL measurements in advance during configured measurement gaps before D2D operations begin. By completing necessary cellular measurements beforehand, the system ensures mobility performance is maintained without interfering with subsequent positioning measurements that occur during D2D operation phases.
Solution Approach 2:
The invention implements periodic measurement gaps at regular intervals to perform cellular DL measurements. This periodic approach allows the system to maintain up-to-date mobility information without continuously interfering with positioning measurements. The periodic timing is carefully coordinated so that measurement gaps do not overlap with critical positioning measurement opportunities.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
There is disclosed a D2D enabled node (10) for a wireless communication network, the D2D enabled node being adapted to perform a D2D operation on a first carrier frequency or band (f1) and a cellular operation on a second carrier frequency or band (f2). The D2D enabled node (10) is further adapted for obtaining information about D2D operation on f1 and obtaining information about cellular DL operation on f2, as well as being adapted for adapting at least one of the D2D operation and cellular DL operation to meet one or more requirements or to comply with one or more rules. There are disclosed further related devices and methods.