D2D Communication via Wireless Network Temporary Identifier
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Solution Overview
Problem
Current device-to-device (D2D) communication technologies, such as those under the LTE system, lack standardization and effective methods for realizing direct data exchange between devices under mobile network control.
Innovation Solution
A method and system that involve acquiring a wireless network temporary identifier and descrambling transmission grant information to enable D2D communication, with terminals configured to receive and process this information for direct data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If device to device communication is implemented under LTE system, then direct data exchange between devices is enabled, but standardization and implementation methods are lacking
Solution Approach 1:
The base station serves as an intermediary that coordinates D2D communication by allocating temporary identifiers and transmission resources. The network controller acts as a higher-level intermediary for resource management and coordination between multiple D2D pairs, reducing the complexity burden from individual devices.
Solution Approach 2:
The temporary identifier serves multiple functions: it identifies the D2D communication pair, enables scrambling of transmission grant information, and facilitates resource allocation. This multi-functional approach reduces the number of separate mechanisms needed, thereby reducing overall system complexity.
2Reliability
If transmission grant information is scrambled through wireless network temporary identifier, then security and accuracy are improved, but processing complexity increases
Solution Approach 1:
The temporary identifier dynamically changes per D2D communication instance, and is used to scramble transmission grant information. This parameter-based scrambling approach provides security and accuracy without requiring complex cryptographic protocols, balancing reliability with processing simplicity.
3Adaptability or versatility
If base station allocates temporary identifier and transmission resources, then D2D communication is enabled, but network control complexity increases
Solution Approach 1:
The network control functions are segmented between the base station and network controller. The base station handles local D2D resource allocation and identifier assignment, while the network controller manages broader resource coordination. This segmentation distributes control complexity across multiple entities rather than concentrating it in one component.
Data Source
AI summary
Embodiments of the present invention disclose a method, device, and system for realizing device to device communication. The communication method includes: acquiring a wireless network temporary identifier used for device to device communication; receiving transmission grant information scrambled through the wireless network temporary identifier used for the device to device communication; and performing the device to device communication according to descrambled transmission grant information. In the present invention, by sending, to the terminal, the wireless network temporary identifier used for performing the device to device communication and the transmission grant information, the terminal may realize the D2D communication according to the wireless network temporary identifier used for performing the device to device communication and the transmission grant information, thereby satisfying a requirement of D2D data transmission between terminals.