PDCP Receiving Window Configuration for MBS Continuity
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Solution Overview
Problem
The existing technologies face challenges in updating the boundary values of the receiving window of a Packet Data Convergence Protocol (PDCP) entity in real time, which affects the reliability and continuity of Multicast Broadcast Service (MBS) data transmission, especially when new user equipment joins in.
Innovation Solution
A method and apparatus for configuring the receiving window of a PDCP entity by determining and adjusting parameters such as window length, boundary values, and sequence numbers based on indication information from a network device, allowing timely updates to ensure continuous and reliable MBS data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the boundary value of the receiving window of a PDCP entity is not updated in real time, then the PDCP entity maintains stable operation, but new user equipment cannot join in to receive MBS service data
Solution Approach 1:
The patent applies the dynamics principle by enabling real-time updates of the receiving window boundary value in the PDCP entity. The network device can dynamically adjust the boundary value based on the sequence number of received data, allowing new user equipment to join the MBS reception at any time while maintaining continuous and reliable data transmission. This dynamic adjustment mechanism resolves the contradiction between adaptability for new UEs and reliability for continuous transmission.
2Adaptability or versatility
If the receiving window boundary value is updated in real time based on sequence number, then new user equipment can join in, but the complexity of PDCP configuration increases
Solution Approach 1:
The patent applies the self-service principle by enabling the PDCP entity to automatically update its receiving window boundary value based on the sequence number of received data without requiring manual reconfiguration. The network device sends indication information that triggers the terminal device to automatically adjust the boundary value, simplifying the configuration process while maintaining real-time adaptability for new user equipment joining.
3Duration of action of stationary object
If the receiving window parameters are adjusted dynamically, then continuity of MBS data transmission is ensured, but the risk of data loss increases
Solution Approach 1:
The patent applies the feedback principle by implementing a mechanism where the network device sends indication information to the terminal device based on the sequence number of received data. This feedback loop allows the terminal device to accurately track and adjust the receiving window boundary value, ensuring continuous data transmission while minimizing data loss risk through precise control and monitoring of the window parameters.
Data Source
AI summary
A method for configuring a receiving window of a packet data convergence protocol (PDCP) entity is executed by a terminal device, and includes: determining an adjustment parameter corresponding to a variable of the receiving window of the PDCP entity; and configuring the variable of the receiving window of the PDCP entity based on the adjustment parameter.