D2D Control Channel Resource Allocation via Grant Signals
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Solution Overview
Problem
Current wireless communication systems, such as LTE, face challenges in efficiently allocating resources for control signals in device-to-device direct communication, which affects signal transmission and reception efficiency.
Innovation Solution
A method and apparatus for allocating a resource for a control channel in device-to-device direct communication, where a first grant signal is received to allocate a first time resource consisting of multiple subframes, and the control signal is transmitted based on this signal, with the ability to also receive a second grant signal for a second time resource and repeatedly transmit the control channel in the first time resource.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resources for control signals in device-to-device direct communication are allocated using conventional methods, then the basic communication function is maintained, but the signal transmission and reception efficiency is insufficient
Solution Approach 1:
The patent applies preliminary action by having the base station transmit downlink control information (grant signals) in advance before the actual device-to-device communication time resources. The grant signal transmitted in subframe n schedules the D2D communication in subframe n+k, allowing the terminal to prepare and transmit control signals efficiently without waiting for real-time allocation decisions.
Solution Approach 2:
The patent implements dynamics by enabling flexible resource allocation where the base station can dynamically adjust the timing relationship between grant signal transmission and D2D communication based on network conditions. The parameter k in subframe n+k allows adaptive timing adjustment to optimize both transmission efficiency and operational flexibility.
Data Source
AI summary
A method for allocating resources for a control channel of device-to-device direct communication in a wireless communication system is disclosed in the present application. Particularly, the method comprises the steps of: receiving, in a subframe no. 1 from a base station, grant signal no. 1 for allocating time resource no. 1 for the control channel, which consists of two or more subframes, of device-to-device direct communication; and transmitting, to another terminal, the control channel of device-to-device direct communication on the basis of the grant signal no. 1, wherein the subframe no. 1 precedes by a preset number of subframes earlier than the first subframe of the time resource no. 1.