D2D Mesh Capability Signaling to Prevent Wasted Multi-Hop Power
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Solution Overview
Problem
In D2D mesh networks, the high power consumption of mobile terminals is a key factor affecting user experience, and existing methods do not effectively address this issue.
Innovation Solution
A capability indication method is implemented where a network device sends first indication information to a mobile terminal indicating support for multi-hop communication, preventing unnecessary multi-hop operations and conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If mobile terminals perform multi-hop operations in D2D mesh networks, then communication coverage and bandwidth capacity are improved, but power consumption increases
Solution Approach 1:
The network device performs preliminary capability indication by sending first indication information to the mobile terminal before the terminal initiates multi-hop operations. This preliminary action allows the terminal to determine in advance whether multi-hop is supported, avoiding unnecessary power consumption from attempting unsupported operations
Solution Approach 2:
The system implements feedback mechanism where the network device provides capability information (first indication information) to the mobile terminal regarding multi-hop support. This feedback enables the terminal to adjust its behavior accordingly, performing multi-hop operations only when supported, thus optimizing power consumption while maintaining coverage benefits
2Reliability
If mobile terminals perform invalid multi-hop operations, then communication attempts are made, but electricity is wasted
Solution Approach 1:
The capability indication is performed in advance before the mobile terminal initiates multi-hop communication attempts. The network device sends first indication information that enables the terminal to determine beforehand whether multi-hop is supported, preventing invalid operations and associated energy waste while maintaining communication reliability when supported
3Adaptability or versatility
If the network supports multi-hop communication, then D2D mesh network functionality is enhanced, but device complexity increases
Solution Approach 1:
The patent extracts the capability indication function from the overall communication protocol and implements it as a separate, dedicated signaling mechanism (first indication information). This extraction simplifies the implementation by providing a clear, isolated method for capability notification, reducing the complexity burden despite enhanced multi-hop functionality
Solution Approach 2:
The first indication information mechanism serves multiple functions: it indicates multi-hop support capability, guides terminal behavior regarding multi-hop operations, and enables efficient resource allocation. This multi-functionality reduces the need for separate mechanisms, thereby managing device complexity while providing enhanced adaptability
Data Source
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AI summary
The present invention relates to the communications field, and discloses a capability indication method, a route setup method, a mobile terminal, and a network device, so as to save electricity of a mobile terminal in a D2D mesh network. A specific solution is as follows: A network device sends first indication information to a mobile terminal, where the first indication information is used by the network device to indicate to the mobile terminal that a communications network in which the network device is located supports communication between mobile terminals having a multi-hop capability, and the mobile terminal having the multi-hop capability is a mobile terminal having a capability of directly communicating with one or more mobile terminals. Embodiments of the present invention are applied to D2D communication.