Base Station Resource Allocation for Carrier Compatibility
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Solution Overview
Problem
Existing resource allocation methods in LTE technology do not provide a solution for allocating a new system carrier to a new terminal, leading to compatibility issues with conventional terminals, resulting in resource conflicts and waste.
Innovation Solution
A resource allocation method that determines the appropriate resource allocation type and mapping relationships between resource block groups and physical resource blocks for both the component carrier and extension carrier, ensuring compatibility with conventional terminals by using different division thresholds based on bandwidth and system bandwidth relationships.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a new system carrier including extension carrier is introduced to improve resource utilization, then resource utilization is improved, but compatibility with conventional terminals deteriorates
Solution Approach 1:
The system carrier is segmented into a standard component carrier and an extension carrier. The standard component carrier maintains LTE compatibility for conventional terminals, while the extension carrier provides additional resources for new terminals. This segmentation allows different terminal types to operate independently on appropriate carrier portions without interference.
Solution Approach 2:
The base station implements a universal resource allocation mechanism that can handle both standard and extension carriers. The resource allocation information structure is designed to be interpreted differently by conventional terminals (seeing only standard carrier resources) and new terminals (seeing both standard and extension carrier resources), making the system universally compatible with multiple terminal types.
2Reliability
If resource allocation method for standard component carrier is used, then conventional terminal communication is maintained, but new system carrier allocation capability is lost
Solution Approach 1:
The resource allocation mechanism is made dynamic by introducing multiple resource allocation types (Type 0 for standard carrier only, Type 1 for extension carrier only, Type 2 for both). The base station can dynamically select the appropriate allocation type based on terminal capability and network conditions, allowing the system to adapt between maintaining conventional compatibility and utilizing new system carrier capabilities.
Solution Approach 2:
The patent changes the parameter of resource allocation type to enable different allocation behaviors. By modifying the resource allocation type parameter in the downlink control information, the system can switch between allocation modes that are compatible with conventional terminals and modes that utilize the full new system carrier resources for new terminals.
3Ease of operation
If unified resource allocation is applied to both standard and extension carriers, then allocation simplicity is improved, but resource block mapping precision deteriorates
Solution Approach 1:
Different resource block mapping rules are applied to different parts of the carrier structure. Standard component carrier resource blocks use the traditional mapping relationship, while extension carrier resource blocks use a separate mapping relationship. This local differentiation ensures precise resource block mapping for each carrier type while maintaining overall system simplicity through standardized procedures.
Data Source
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AI summary
Embodiments of the present invention provide a resource allocation method and an apparatus. The method includes: determining, by a base station, a first physical resource to be allocated to a terminal and a resource allocation type; determining, by the base station according to the resource allocation type and a mapping relationship between a resource block unit and a physical resource, a first resource block unit corresponding to the first physical resource; and further sending, by the base station, resource allocation information to the terminal, where the resource allocation information includes the resource allocation type and indication information of the first resource block unit allocated by the base station to the terminal. In this way, a resource allocation method applied to a new system carrier is implemented. It can be ensured that when a new terminal transmits data by using the new system carrier, a conventional terminal can also transmit data by using a standard component carrier, that is, the new system carrier is compatible with the conventional terminal, so that resource utilization can be improved.