User Equipment Carrier Set Selection in Passive Optical Networks
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Solution Overview
Problem
In passive optical networks, the get-online process for user equipment is prolonged due to the lengthy capability negotiation procedure using handshake protocols, leading to excessive get-online times.
Innovation Solution
A method where user equipment sends signals at specific frequencies to select a target carrier set during the collision control access phase, allowing direct capability negotiation in the handshake access phase without separate carrier set selection, thereby reducing signaling exchanges and shortening the get-online process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment performs capability negotiation using handshake protocol after collision control access phase, then reliable connection is established, but get-online time becomes excessively long
Solution Approach 1:
The patent performs carrier set selection and clock synchronization in advance during the collision control access phase, before the handshake access phase begins. By completing these preliminary actions beforehand, the subsequent capability negotiation can proceed more quickly, reducing the overall get-online time while maintaining connection reliability.
Solution Approach 2:
The patent merges the carrier set selection and clock synchronization procedures with the collision control access phase. Instead of performing these as separate steps before handshake negotiation, they are integrated into the existing access phase, thereby reducing the total number of distinct phases and shortening the get-online process.
2Measurement precision
If separate carrier set selection signaling is performed before handshake access phase, then proper frequency alignment is achieved, but signaling exchange increases and get-online procedure lengthens
Solution Approach 1:
The patent combines carrier set selection signaling with the collision control access phase signaling. The same signaling mechanisms used for collision control are also used to convey carrier set selection information, eliminating the need for separate dedicated signaling and reducing overall signaling complexity.
Solution Approach 2:
The signaling framework in the collision control access phase is designed to serve multiple functions simultaneously: collision detection, carrier set selection, and clock synchronization. This multi-functional approach reduces the need for separate signaling procedures and simplifies the overall communication protocol.
Data Source
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AI summary
This application discloses a get-online method for user equipment and user equipment, and belongs to the field of communication technologies. In this application, in a collision control access phase, the user equipment may send a first signal to an access device at a first uplink frequency; and then receive a second signal that is in response to the first signal and that is sent by the access device at a first downlink frequency and second downlink frequencies, and send a third signal at the first uplink frequency and uplink frequencies included in a target carrier set, to complete carrier set selection. The user equipment may perform negotiating capability with the access device based on the determined target carrier set in a handshake access phase. Therefore, it can be learned that in embodiments of this application, when getting online, the user equipment can complete carrier set selection in the collision control access phase. In this way, the user equipment subsequently does not need to perform carrier set selection through separate signaling exchange in the handshake access phase, thereby reducing interaction procedures and shortening access time.