MAC Layer Information Duplication for Paging Detection
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Solution Overview
Problem
Existing user equipment often experiences low probability of correct detection of paging messages or system information due to high penetration loss and low receiver sensitivity, especially in locations with reduced coverage range, such as indoors.
Innovation Solution
A method where a base station sends additional information alongside common information, with data packets of both being the same at the MAC layer, to improve detection probability, involving determining the quantity and radio resources for transmission based on specific information like wireless communication protocols and user equipment requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station transmits only common information using conventional methods, then the transmission complexity is low, but the probability of correct detection by user equipment in challenging locations (indoor, basement) is low due to high penetration loss
Solution Approach 1:
The patent segments the transmission process into two parts: common information transmission and additional information transmission. The additional information is specifically targeted to user equipment in challenging locations, allowing the system to improve detection probability for these users without unnecessarily increasing complexity for all users. The base station identifies user equipment in coverage holes and sends additional targeted information to them.
Solution Approach 2:
The patent applies local quality by providing different transmission strategies to different user equipment based on their location and reception capability. User equipment in normal coverage areas receives only common information, while user equipment in coverage holes (indoor, basement locations with high penetration loss) receives both common information and additional information tailored to their specific needs.
2Reliability
If the base station sends additional information to all user equipment, then the detection probability improves for all users, but the network bandwidth consumption and transmission overhead increase significantly
Solution Approach 1:
The patent segments the user equipment population into two groups: those in normal coverage areas and those in coverage holes. Only the second group receives additional information, which segments the bandwidth consumption to only where it is needed, rather than wasting network resources transmitting additional information to all user equipment regardless of their actual reception needs.
Solution Approach 2:
User equipment autonomously determines whether it is in a coverage hole based on its reception of common information. If the user equipment detects that it cannot properly receive common information (indicating it is in a coverage hole), it requests or receives additional information. This self-service mechanism ensures that additional information is transmitted only when actually needed, minimizing unnecessary bandwidth consumption.
3Reliability
If the base station increases transmission power to improve coverage in challenging locations, then the detection probability for indoor and basement users improves, but the energy consumption and interference to other users increases
Solution Approach 1:
Instead of uniformly increasing transmission power across all directions and time slots, the patent segments the transmission to target only user equipment in coverage holes. The additional information is transmitted specifically to these users using appropriate resources, which reduces overall energy consumption compared to blanket power increases while still improving coverage for the targeted users.
Solution Approach 2:
The patent creates a copy of the common information as additional information, which is then transmitted to user equipment in coverage holes. This copying approach allows the same information to be delivered through different transmission strategies (targeted additional information vs. high power general transmission), reducing energy consumption while maintaining coverage.
Data Source
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AI summary
The present invention provides a method for transmitting common information, a base station, and user equipment, where the method includes: generating additional information according the common information, where the common information is a paging message and/or system information, and data packets of the additional information and data packets of the common information are the same at a Media Access Control MAC layer; and sending the common information and the additional information to the user equipment. In embodiments of the present invention, because the additional information and the common information carry same MAC layer data packet content, in a case of receiving the common information and the additional information, the user equipment may determine a data packet at the MAC layer according to the common information and the additional information; therefore a probability of correct detection of the common information may be increased.