MIB-Based Base Station Load Signaling for Terminal Access Control
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Solution Overview
Problem
Existing methods for a terminal to select a base station based on received signal strength do not accurately reflect the load of the base station, leading to suboptimal battery consumption and information throughput, and inefficient resource allocation.
Innovation Solution
A method for a terminal to control access to a base station by receiving load information, such as frequency and CPU load, through master information blocks, system information blocks, and downlink control information, and a base station to transmit load information using reserved bits or spare bit strings in the master information block.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If terminal selects base station based on received signal strength only, then connection establishment is simple, but battery consumption and information throughput are not optimized according to base station load
Solution Approach 1:
The base station transmits load information to the terminal through feedback channels (PBCH, PDSCH, or PDCCH). The terminal receives this load information and uses it to adjust its base station selection decision, creating a feedback loop that enables optimized selection based on actual base station conditions rather than signal strength alone.
Solution Approach 2:
Load information acts as an intermediary parameter that mediates between the terminal's selection criterion and the base station's actual state. Instead of directly measuring base station load, the terminal receives processed load information from the base station, which serves as an intermediary representation of the base station's capacity and status.
2Device complexity
If terminal selects base station based on received signal strength only, then selection process is simple, but resource allocation efficiency by network is not optimized
Solution Approach 1:
The base station performs preliminary calculation and preparation of load information before the terminal needs to make a selection decision. By pre-computing and transmitting load information through broadcast or dedicated channels, the network prepares the necessary data in advance, enabling the terminal to make informed decisions without complex real-time calculations.
Solution Approach 2:
The network implements a feedback mechanism where load information is continuously or periodically transmitted to terminals. This feedback enables dynamic resource allocation optimization as terminals can adapt their selections based on current network conditions reflected in the load information.
3Quantity of substance
If base station transmits load information through MIB using reserved bits, then information transmission is efficient, but MIB structure requires modification
Solution Approach 1:
The invention extracts and utilizes the unused reserved bits within the existing MIB structure. By taking out these previously unused bits and assigning them to carry load information, the patent adds information transmission capability without requiring a complete redesign of the MIB framework, thus efficiently using available space.
Solution Approach 2:
The MIB structure is enhanced to serve multiple functions: it continues to provide traditional system information while simultaneously carrying load information through the reserved bits. This multi-functionality allows a single message structure to fulfill both existing and new purposes without requiring separate transmission channels.
Data Source
AI summary
Provided is a method, performed by a terminal, of controlling access to a base station in a wireless communication system. The method may include receiving a master information block (MIB) from a base station through a physical broadcast channel (PBCH), identifying whether first load information about a load of the base station is included in the MIB, determining whether to access the base station by using the first load information based on a result of the identifying, and accessing the base station based on a result of the determining.