Positioning Server Control for Energy-Saving RRM and Beam Operations
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Solution Overview
Problem
Communications devices face challenges in reducing power consumption during positioning services, leading to inefficient resource use and increased power consumption due to invalid pilot transmissions and receptions, particularly in scenarios where RRM measurements are not performed, resulting in difficulties in determining cell information and resource wastage.
Innovation Solution
A positioning server provides first information to indicate operations related to RRM measurement, access, transmit/receive beams, or TA adjustments, guiding terminal devices and network devices to optimize energy-saving behaviors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the terminal device does not perform RRM measurement to reduce power consumption, then power consumption is reduced, but the terminal device cannot determine cell information accurately leading to invalid pilot transmission and increased power consumption
Solution Approach 1:
The positioning server performs preliminary actions by determining whether RRM measurement needs to be performed based on terminal device location information and cell information before the terminal device actually performs measurement. This allows the server to pre-configured measurement requirements, avoiding unnecessary measurements and ensuring measurements are only performed when needed, thus resolving the contradiction between power saving and positioning accuracy
Solution Approach 2:
The system implements feedback mechanisms where the positioning server receives location information from the terminal device and cell information from the access network device, processes this information to determine RRM measurement requirements, and feeds back control instructions to both the terminal device and access network device. This closed-loop feedback ensures that RRM measurement is performed only when necessary, optimizing the balance between power consumption and positioning reliability
2Reliability
If the terminal device performs beam sweeping for SRS transmission to ensure communication reliability, then communication reliability is improved, but resources are wasted when there is no base station in certain directions
Solution Approach 1:
The positioning server performs preliminary determination of whether SRS transmission needs to be performed and which beams should be used, based on terminal device location information and cell information, before the actual beam sweeping process. This allows the terminal device to perform beam sweeping only in directions where base stations are actually present, avoiding resource waste while maintaining communication reliability
Solution Approach 2:
The positioning server acts as an intermediary that receives location information from the terminal device and cell information from the access network device, processes this information to determine optimal beam directions for SRS transmission, and feeds back control instructions to both the terminal device and access network device. This intermediary role enables the system to avoid beam sweeping in directions without base stations, resolving the contradiction between reliability and resource efficiency
Data Source
AI summary
A method for communication, a positioning server, an access network device, and a terminal device are provided. The method includes: transmitting, by a positioning server, first information, where the first information is associated with a terminal device, the first information is used to indicate a first operation, and the first operation is related to one or more of the following: RRM measurement, access of the terminal device, a transmit beam, a receive beam, or a TA. The first operation is related to a behavior for saving energy for the terminal device.