Re-synchronisation Signal Positioning for Wireless Networks
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Solution Overview
Problem
Current wireless communications networks face challenges in efficiently supporting a wide range of devices with different data traffic profiles, particularly in terms of low power consumption and reduced complexity devices like those used in the Internet of Things (IoT).
Innovation Solution
The method involves providing a wireless access interface to form a first cell in a wireless communications network, broadcasting a re-synchronisation signal (RSS) for the first cell, and indicating the position in time and frequency of RSSs for neighbouring cells. These signals are transmitted in a restricted set of permitted positions, reducing the number of bits required for signalling and minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all possible positions for RSS transmission are considered, then the communications device can find the RSS, but the number of bits required for signalling increases and power consumption increases due to blind-decoding
Solution Approach 1:
The patent segments the time-frequency resource grid by defining a restricted set of permitted positions for RSS transmission. Instead of allowing RSS to be transmitted at any possible position, the system divides the resource space into specific permitted locations, reducing the search space from all possible positions to a manageable subset, thereby reducing power consumption while maintaining detection reliability
Solution Approach 2:
The patent applies partial action by transmitting RSS only at a subset of permitted positions rather than all possible positions. This partial transmission approach reduces the signalling overhead and allows communications devices to decode fewer positions, saving power while still ensuring reliable RSS delivery through strategic positioning
2Adaptability or versatility
If all possible positions for RSS transmission are considered, then the RSS can be transmitted flexibly, but the number of bits required for signalling increases
Solution Approach 1:
The patent segments the time-frequency resources into a restricted set of permitted positions for RSS transmission. This segmentation reduces the signalling overhead by eliminating the need to indicate all possible positions, thereby reducing information loss in terms of signalling bandwidth while maintaining sufficient transmission flexibility through the permitted position set
3Use of energy by moving object
If a restricted set of permitted positions is used for RSS transmission, then power consumption and signalling bits are reduced, but the number of available positions for transmission is limited
Solution Approach 1:
The restricted set of permitted positions serves multiple functions: it reduces power consumption by limiting the search space, reduces signalling overhead by minimizing the number of bits required, and maintains sufficient flexibility for network deployment. The universal applicability of these permitted positions across different cells and scenarios achieves energy efficiency without sacrificing essential adaptability
Data Source
AI summary
A method of operating an infrastructure equipment forming part of a wireless communications network for transmitting data to or receiving data from a communications device. The method comprises providing a wireless access interface to form a first cell of the wireless communications network, the infrastructure equipment forming part of a radio access network of the wireless communications network, broadcasting a re-synchronisation signal, RSS, of the first cell, the RSS being configured to carry information which is detectable by the communications device for acquiring synchronisation with the infrastructure equipment, and broadcasting an indication of a position in time and frequency of an RSS of each of one or more neighbouring cells to the first, the RSSs of each of the one or more neighbouring cells being configured to carry information which is detectable by the communications device for performing measurements on the each of the one or more neighbouring cells.