Carrier Aggregation D2D Resource Allocation for Network Load Reduction
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Solution Overview
Problem
Current technologies do not effectively integrate Device-to-Device (D2D) communication with carrier aggregation in cellular networks, leading to inefficiencies in frequency spectrum utilization and increased network load during heavy traffic.
Innovation Solution
Allocate orthogonal or multiplexed network resources to user equipment groups for D2D communication, allowing data to be divided into component blocks shared among users via a component carrier, enhancing transmission efficiency and reducing network load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation technology is used to group dispersed frequency spectrums into large bandwidth, then peak rate requirements are satisfied and cell resources are flexibly configured, but when cellular network load is heavy, it becomes difficult to find idle resources for carrier aggregation
Solution Approach 1:
The patent combines carrier aggregation technology with D2D communication technology to create an integrated system. When cellular network load is heavy and idle resources are scarce, the system merges D2D communication capabilities with existing cellular resources, allowing users to establish direct communication links while still utilizing the cellular infrastructure for coordination and resource management.
Solution Approach 2:
The patent makes cellular network resources serve multiple functions by enabling them to support both traditional cellular communication and D2D communication. The same frequency spectrums and base station infrastructure are used for both purposes, increasing resource utilization efficiency and allowing the system to adapt to different traffic conditions.
2Reliability
If traditional cellular downlink is used for each user to receive complete data files, then data transmission is reliable, but network load increases and transmission efficiency decreases
Solution Approach 1:
The patent segments the data transmission process into two parts: the base station transmits complete data files to selected users via cellular downlink, and then those users share the data with other users in the group via D2D communication links. This segmentation allows the reliable cellular channel to be used only once for the complete data, while the less reliable but more efficient D2D links handle the distribution to multiple users.
Solution Approach 2:
The patent enables users to serve each other by allowing users who have received complete data files to act as data sources for other users in the group. Through D2D communication, users can directly share data with each other without requiring the base station to transmit the same data multiple times, reducing network load and improving overall transmission efficiency.
3Productivity
If D2D technology is integrated with carrier aggregation, then frequency spectrum utilization increases and transmission efficiency improves, but device complexity and resource allocation difficulty increase
Solution Approach 1:
The patent introduces the base station as an intermediary that coordinates D2D communication resources. The base station allocates time-frequency resources for D2D links, manages interference between cellular and D2D communications, and ensures proper integration with carrier aggregation. This intermediary role simplifies the complexity by centralizing the coordination function rather than requiring direct peer-to-peer negotiation between users.
Data Source
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AI summary
A data transmission/receiving method and device are disclosed. The above transmission method is applied to a base station, and includes: allocating to each user equipment UE in a UE group a network resource required for performing D2D communication, and using the network resource as a component carrier of each UE, wherein, each UE supports carrier aggregation; and dividing data to be transmitted to the UE group into multiple pieces of component data information to respectively transmit to each UE, wherein, each UE shares the multiple pieces of component data information transmitted to each UE via the component carrier. With the above technical scheme provided in the present invention, the technical problems that there has been no solution which uses the D2D technology in the carrier aggregation yet, etc. in the related art are solved, thereby achieving a convergence of the carrier aggregation and the D2D technology, and improving the transmission efficiency of the mobile communication network while reducing the load of the mobile communication network.