Primary Carrier Multi-Carrier Control Signaling
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in managing control channels for multiple-carrier systems, leading to excessive power consumption and unclear control signaling due to blind decoding overload.
Innovation Solution
A method and apparatus for configuring a primary carrier to acquire and monitor multi-carrier control information for secondary carriers, allowing for effective management of control channels by defining resource allocation and presence/absence information, thereby reducing blind decoding overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large bandwidth is supported to obtain high transmission capacity, then transmission capacity is improved, but power consumption increases significantly
Solution Approach 1:
The system segments the total bandwidth into multiple separate carriers (e.g., four 5 MHz carriers to achieve 20 MHz bandwidth). The user equipment can selectively activate only the necessary number of carriers based on service requirements, avoiding the need to continuously support the full bandwidth capacity, thus reducing power consumption while maintaining high transmission capacity when needed.
2Device complexity
If a control channel designed for one carrier is directly used in a multiple-carrier system, then device complexity is reduced, but control signaling becomes unclear and blind decoding overload occurs
Solution Approach 1:
The invention creates a universal control channel design that functions across multiple carriers. The primary carrier's control channel is enhanced to carry multi-carrier control information that can direct monitoring on secondary carriers, making the control mechanism applicable to systems with varying numbers of carriers while maintaining clear signaling and avoiding blind decoding overload.
Solution Approach 2:
The primary carrier serves as an intermediary that carries control information about secondary carriers. Instead of each carrier having independent control channels, the primary carrier mediates the control signaling by providing information (such as presence/absence indicators and resource allocation) that enables user equipment to efficiently monitor control channels across multiple carriers without overload.
Data Source
AI summary
A communication method and apparatus using multiple carriers are provided. A primary carrier is configured, and multi-carrier control information for monitoring a control channel of a secondary carrier is transmitted through the primary carrier. A user equipment monitors a control channel of the secondary carrier on the basis of the multi-carrier control information.