Base Station Beam Information Broadcasting for Quick User Access
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Solution Overview
Problem
Narrow beam communication requires a long scanning time and occupies a large quantity of resources due to the need for periodic scanning in all directions to select an optimal beam combination for data transmission.
Innovation Solution
The method involves a base station sending beam information to both active and inactive user equipment, allowing inactive users to learn accessible beams during data transmission, thereby reducing the need for repeated scanning and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If narrow beam scanning and alignment is performed in all directions during each scanning to select optimal beam combination, then communication reliability is improved, but scanning time increases and resource occupancy increases
Solution Approach 1:
The patent applies preliminary action by having the base station send beam information to inactive user equipment in advance, before the inactive users need to perform scanning. This allows inactive users to obtain beam information during the data transmission phase of other users, eliminating the need for them to perform time-consuming full-direction scanning later.
2Reliability
If narrow beam scanning and alignment is performed in all directions during each scanning to select optimal beam combination, then communication reliability is improved, but resource occupancy increases
Solution Approach 1:
The patent applies universality by making the beam information sent during data transmission serve multiple functions: it is used not only for the active user's communication but also for informing inactive users about accessible beams. This multi-functional use of the same beam information reduces the need for separate scanning resources for inactive users.
3Measurement precision
If fixed timeslot is configured for periodic scanning in each subframe, then beam alignment accuracy is improved, but time for data transmission decreases
Solution Approach 1:
The patent applies preliminary action by providing beam information to inactive users in advance during the data transmission phase, so that when these users become active, they do not need to perform time-consuming scanning that would disrupt the fixed timeslot arrangement and reduce data transmission efficiency.
Data Source
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AI summary
Embodiments of the present invention disclose a communication method, including: performing, by a base station, beam scanning and alignment together with first user equipment in a first subframe, to determine a beam that is used for sending data in the first subframe, where a quantity of beams used for sending data is greater than or equal to 1; and when sending data to the first user equipment by using the beam, sending, by the base station, beam information of the beam used for sending data, where the beam information includes at least identification information of the beam and a synchronization signal, where the synchronization signal is used by second user equipment to synchronize with the base station, and the identification information of the beam is used by the first user equipment and the second user equipment to identify the beam sent by the base station. The embodiments of the present invention further disclose a base station and user equipment. According to the present invention, a time for scanning and alignment can be reduced, so as to facilitate quick access of a user that is to perform access.