Base Station Power Boost Mode for Coverage-Limited Terminals
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Solution Overview
Problem
Terminal devices in coverage-limited locations struggle to access wireless telecommunications systems due to insufficient power boosting capabilities, leading to unreliable communications, as they are unaware of base stations' power boosting modes until after attempting to camp on them, resulting in wasted resources and interference.
Innovation Solution
A method where terminal devices receive indications of base stations' power boost operating modes, allowing them to control their acquisition and delay or adjust their connection strategies based on the availability of power boosting, thereby optimizing access to base stations that support enhanced transmission powers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a base station increases transmission power to improve coverage for terminal devices in coverage-limited locations, then communication reliability is improved, but interference in neighbouring communication cells increases
Solution Approach 1:
The base station applies different transmission power levels to different spatial locations. Specifically, it transmits at higher power levels toward coverage-limited terminal devices while maintaining lower power levels for other areas, thereby providing localized power enhancement without uniformly increasing interference across all neighbouring cells.
Solution Approach 2:
The base station dynamically adjusts its transmission power levels based on real-time conditions, including the presence and location of terminal devices requiring coverage enhancement. This dynamic power control allows the system to optimize between coverage reliability and interference generation on a per-condition basis.
2Reliability
If a base station concentrates transmission power into a subset of transmission resources for coverage-limited terminal devices, then power availability for hard-to-reach locations is improved, but the overall power budget is constrained
Solution Approach 1:
The base station divides its transmission resources into different segments or subsets. It allocates a specific subset of transmission resources dedicated to coverage-limited terminal devices with concentrated power, while maintaining access to other resources for general traffic, thereby segmenting the power budget to simultaneously serve both coverage-enhancement needs and overall system requirements.
3Ease of operation
If terminal devices attempt to camp on base stations without knowing whether power boosting is supported, then access attempts are made, but resources are wasted and interference occurs
Solution Approach 1:
The system performs preliminary actions by broadcasting information about power boosting capability and operational mode before terminal devices attempt to camp on a base station. This advance notification allows terminal devices to prepare accordingly, avoiding unnecessary access attempts to base stations that cannot provide required power boosting, thereby preventing waste of terminal power and network resources.
Solution Approach 2:
The base station provides feedback information to terminal devices about its power boosting capabilities and current operational mode. This feedback mechanism enables terminal devices to make informed decisions about whether to attempt camp-on procedures, reducing unnecessary access attempts and associated power consumption while maintaining ease of operation for devices that can successfully connect.
Data Source
AI summary
A wireless telecommunication system includes base stations for communicating with terminal devices. One or more base stations support a power boost operating mode in which a base station's available transmission power is concentrated in a subset of its available transmission resources to provide enhanced transmission powers as compared to transmission powers on these transmission resources when the base station is not operating in the power boost mode. A base station establishes an extent to which one or more base stations in the wireless telecommunications system support the power boost operating mode conveys an indication of this to a terminal device. The terminal device receives the indication and uses the corresponding information to control its acquisition of a base station of the wireless telecommunication system, for example by taking account of which base stations support power boosting and/or when power boosting is supported during a cell attach procedure.