D2D Discovery Message Transmission on Alternative Carriers
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Solution Overview
Problem
Existing wireless communication systems face limitations in device-to-device (D2D) discovery message transmission, as D2D UE can only transmit messages on carrier frequencies supported by the serving cell, leading to potential overload and restricted discovery capabilities.
Innovation Solution
The method allows D2D UE to identify and transmit discovery messages on carriers pre-configured or provided by the network, including those from different Public Land Mobile Networks (PLMNs), enabling transmission on frequencies not necessarily aligned with the primary or serving cell, using system information and resource configurations to determine and allocate appropriate resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If D2D UE transmits discovery messages only on carrier frequencies supported by the serving cell, then network resource management is simplified, but discovery capabilities are restricted and carrier overload occurs
Solution Approach 1:
The patent segments the carrier selection process into two distinct parts: (1) the serving cell provides a pre-configured list of authorized carriers for D2D discovery, and (2) the UE independently selects from this authorized list based on local conditions. This segmentation resolves the contradiction by providing adaptability within bounded complexity - the UE gains freedom to choose from multiple carriers while the network maintains control through the authorized list, preventing uncontrolled complexity.
2Quantity of substance
If D2D UE uses only serving cell carriers for discovery messages, then carrier frequency consistency is maintained, but transmission overload increases and discovery range is limited
Solution Approach 1:
The patent introduces a new dimension for carrier selection by allowing UEs to transmit discovery messages on multiple different carrier frequencies beyond just the serving cell carrier. Instead of being constrained to a single frequency dimension, UEs can now operate across multiple frequency dimensions from an authorized list, thereby increasing transmission capacity while distributing load across different carriers to avoid overload on any single carrier.
3Adaptability or versatility
If D2D UE is authorized to transmit on multiple carriers, then discovery versatility improves, but resource management complexity increases
Solution Approach 1:
The patent applies preliminary action by having the network pre-configure and broadcast an authorized carrier list before UEs need to perform D2D discovery. This preliminary provisioning of carrier options simplifies subsequent UE operations, as devices can independently select from the pre-authorized list without requiring complex real-time negotiations or approvals, thus maintaining ease of operation while enabling versatile multi-carrier selection.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as a Long Term Evolution (LTE). The various embodiments of the present invention disclose a method and system for enabling device-to-device (D2D) discovery message transmission in a wireless communication network. The method comprises of identifying, by a D2D communication user equipment (UE), one or more carriers for transmission of one or more D2D discovery messages, determining, one or more discovery resources for transmission of one or more D2D discovery messages on the one or more identified carriers and transmitting the one or more D2D discovery messages on the one or more identified carriers.