Idle Terminal Cooperative Communication Threshold Selection
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Solution Overview
Problem
In multiple user cooperative communication (MUCC) systems, especially in LTE, the process of establishing cooperative communication leads to high power consumption as all idle terminals with support functions need to connect to the base station, causing unnecessary energy expenditure.
Innovation Solution
A method where a ready-to-support terminal in an idle state receives a system broadcast from the base station, acquires channel quality parameters, and only when meeting specific thresholds, generates a measurement event to initiate cooperative communication, thereby reducing the need for all terminals to connect and minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all idle terminals with support functions connect to the base station to establish cooperative communication, then the reliability of cooperative communication is improved, but the power consumption of terminals increases significantly
Solution Approach 1:
Instead of requiring all idle terminals to connect to the base station, the patent applies partial action by selecting only those terminals that meet specific channel quality thresholds. The base station receives measurement reports from idle terminals and identifies candidate supporting terminals based on whether their channel quality parameters (e.g., RSRP, SINR) exceed predefined thresholds, thereby reducing the number of connections established while maintaining sufficient communication reliability.
Solution Approach 2:
The patent utilizes parameter changes by evaluating channel quality parameters (such as RSRP and SINR) to determine terminal eligibility. The base station compares measured parameters against threshold values, and only terminals whose parameters meet the criteria are selected as supporting terminals. This parameter-based filtering mechanism enables the system to maintain reliable cooperative communication while minimizing terminal power consumption by avoiding unnecessary connections.
2Measurement precision
If all idle terminals establish connections to the base station for measurement and configuration, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent applies partial action by requiring only selected terminals to establish connections for measurement purposes. Specifically, the base station identifies candidate supporting terminals based on measurement reports and channel quality thresholds, then establishes connections only with those terminals that meet the criteria. This reduces the number of connections and associated management complexity while maintaining sufficient measurement precision for identifying suitable supporting terminals.
Solution Approach 2:
The patent segments the terminal population into different categories: terminals that meet channel quality thresholds (candidate supporting terminals) and those that do not. By segmenting based on measured parameters, the base station can manage connections more efficiently, focusing resources on terminals that contribute most to cooperative communication performance while reducing overall system complexity.
3Adaptability or versatility
If the base station connects to all idle supporting terminals to determine capability, then the adaptability of cooperative communication is improved, but the loss of time increases
Solution Approach 1:
The patent applies preliminary action by having idle terminals send measurement reports to the base station before formal connection establishment. These preliminary measurements allow the base station to pre-identify candidate supporting terminals based on channel quality thresholds. By performing this preliminary assessment, the system reduces the time required for subsequent connection establishment and capability determination, as only pre-screened candidates need to undergo full connection procedures.
Solution Approach 2:
The patent reduces time loss by applying partial action - establishing connections only with terminals that meet channel quality thresholds rather than all idle terminals. The base station uses measurement reports to identify candidate supporting terminals and establishes connections selectively, thereby reducing the total time required for supporting terminal selection while maintaining adaptability through threshold-based criteria.
Data Source
AI summary
A specific solution is: An idle ready-to-support terminal receives a system broadcast sent by a base station, acquires a channel quality parameter between the ready-to-support terminal and the base station according to the system broadcast, and if a first threshold is met, acquires a channel quality parameter between the benefited terminal and the ready-to-support terminal; and if a second threshold is met, the ready-to-support terminal generates a measurement event, and sends the measurement event to the base station, so that the base station sends a supporting-cooperation indication to the ready-to-support terminal according to the measurement event, and the terminal establishes a cooperative communication set with the benefited terminal according to the supporting-cooperation indication. The present invention is used to establish a cooperative communication between a base station and a terminal.