eMTC Unicast Resource Allocation via Reception Pool Configuration
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Solution Overview
Problem
Existing short range unicast communication technologies cannot be applied to narrowband terminals, such as eMTC, due to limitations in resource allocation and compatibility issues, particularly with eMTC terminals that do not support System Information Block 18, leading to difficulties in data transmission and reception.
Innovation Solution
A method and device for short range unicast communication that configures a reception resource pool for eMTC terminals and allocates transmission resources within this pool, ensuring data transmission and reception compatibility, even when the destination terminal is also eMTC, by restricting bandwidth to six Physical Resource Blocks and using specific control information formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing short range unicast communication technologies are used, then communication between general terminals is supported, but compatibility with narrowband terminals (eMTC) is not achieved
Solution Approach 1:
The patent changes the bandwidth parameter by configuring a reception resource pool with a bandwidth of no more than six physical resource blocks (PRBs) for eMTC terminals, and allocates transmission resources within this constrained bandwidth. This parameter adaptation enables eMTC terminals with limited bandwidth capability to participate in short range unicast communication while maintaining communication reliability.
2Ease of operation
If system information block 18 is used for resource allocation, then comprehensive resource management is achieved, but eMTC terminals cannot process this information
Solution Approach 1:
The patent extracts the essential resource allocation function from the complex system information block 18 by directly configuring reception resource pool parameters (including bandwidth of no more than six PRBs, time domain resources, and frequency domain resources) through dedicated signaling. This extraction removes the incompatible SIB18 dependency while preserving resource allocation efficiency for eMTC terminals.
Solution Approach 2:
The patent introduces a base station as an intermediary that directly configures and allocates resources for eMTC terminals without requiring them to process SIB18. The base station acts as a mediator that translates general resource allocation requirements into eMTC-compatible configurations with constrained bandwidth parameters.
3Device complexity
If transmission resources are allocated without considering destination terminal type, then resource allocation simplicity is maintained, but resource conflicts occur when destination is eMTC terminal
Solution Approach 1:
The patent performs preliminary action by determining whether the destination terminal is an eMTC terminal before allocating transmission resources. Based on this determination, the base station pre-configures the reception resource pool with appropriate bandwidth constraints (no more than six PRBs) and allocates transmission resources within this pre-defined pool, preventing resource conflicts before they occur.
Solution Approach 2:
The patent applies local quality by differentiating resource allocation based on terminal type. When the destination terminal is identified as eMTC, the system applies specific local constraints (bandwidth limited to six PRBs, dedicated reception resource pool configuration) to that particular terminal, while other terminals continue to use general resource allocation procedures.
Data Source
AI summary
A method and a device for the short range unicast communication, the method includes: receiving resource allocation request information from a terminal; in response to the resource allocation request information, when the terminal is an eMTC, configuring a reception resource pool for the terminal and informing the terminal about the configuration information of the reception resource pool; determining a destination terminal with which a transmitting terminal will directly communicate, and when the destination terminal is an eMTC terminal, allocating a transmission resource in a reception resource pool of the destination terminal to the transmitting terminal; and transmitting resource grant indication information to the transmitting terminal, where the resource grant indication information indicates the transmission resource and the destination terminal corresponding to the transmission resource. Accordingly, short range unicast communication with an eMTC terminal can be realized.