Multi-Carrier System Information Allocation via Broadcast and Unicast
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Solution Overview
Problem
Current communication systems lack an efficient method for sending and receiving multi-carrier system information, which is essential for supporting multi-carrier operations in broadband communication networks, leading to potential issues with data transmission and user coverage.
Innovation Solution
A method involving a base station sending system information about supported multi-carriers via a broadcast message and receiving carrier preferences from a terminal through a unicast message, with allocation of primary and secondary carriers for efficient data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-carrier system information is sent using the same method as single-mode system information, then the system can support multi-carrier operations, but the channel overhead increases and information transmission becomes inefficient
Solution Approach 1:
The patent segments multi-carrier system information into two parts: common information (sent via broadcast message to all terminals) and terminal-specific information (sent via unicast message to individual terminals). This segmentation reduces redundant information transmission and lowers overall channel overhead while maintaining full multi-carrier operation support.
Solution Approach 2:
The broadcast message carries system information that is universally applicable to all terminals in the multi-carrier system, while the unicast message handles terminal-specific carrier allocation. This multi-functional approach allows a single information transmission mechanism to serve both general and specific purposes, improving efficiency.
2Loss of information
If detailed multi-carrier system information is transmitted to all terminals, then complete information is provided, but transmission time and channel resources are consumed
Solution Approach 1:
The patent extracts terminal-specific carrier allocation information from the general system information and transmits it separately via unicast message. This extraction ensures that complete information is provided to each terminal while minimizing transmission time by avoiding redundant broadcasting of individualized data.
Solution Approach 2:
The base station preliminarily determines which terminals require multi-carrier operation support and pre-prepares their specific allocation information. This preliminary action allows the system to transmit only necessary information via unicast after the initial broadcast, reducing overall transmission time while maintaining information completeness.
Data Source
AI summary
A method for sending and receiving multi-carrier information in a communication system supporting a multi-carrier includes sending by a base station system information to the terminal via a broadcast message, the system information regarding multi-carriers that the base station is able to support; receiving a unicast message from the terminal, the unicast message including information related to carriers that the terminal is able to support or prefers in the multi-carrier list included in the system information; and sending multi-carrier allocation information including a primary carrier and a second carrier that the terminal will use, to the terminal via a unicast message.