Sidelink Reception Capability Control for Missed Packet Detection
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Solution Overview
Problem
In the V2X system, terminal devices face challenges in demodulating all data packets due to implementation complexity, cost, and power consumption constraints, leading to missed data packets and increased loss from miss detection.
Innovation Solution
A communication method and apparatus that allows a first terminal apparatus to determine reception and transmission capability values based on specific parameter values, optimizing the balance between cost and detection performance to reduce missed data packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device demodulates all data packets that may arrive at the receiver, then the detection performance is improved, but the implementation complexity, cost, and power consumption increase significantly
Solution Approach 1:
The patent applies partial action by having the terminal device selectively demodulate only a subset of data packets rather than all incoming packets. The receiver determines a first quantity based on reception capability parameters and demodulates only that many data packets from the plurality of received data packets, achieving acceptable detection performance while reducing complexity and power consumption.
2Reliability
If the terminal device demodulates all data packets that may arrive at the receiver, then the detection performance is improved, but the power consumption increases significantly
Solution Approach 1:
The patent applies partial action by having the terminal device selectively demodulate only a subset of data packets rather than all incoming packets. The receiver determines a first quantity based on reception capability parameters and demodulates only that many data packets from the plurality of received data packets, achieving acceptable detection performance while reducing complexity and power consumption.
3Device complexity
If the terminal device limits the number of data packets demodulated due to cost constraints, then the device complexity is reduced, but the quantity of missed data packets increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring reception capability parameters that define the maximum number of data packets the terminal can demodulate. The receiver determines a first quantity based on these pre-set parameters before actual reception, allowing the device to operate within its capability limits while minimizing missed packets through optimized parameter selection.
Solution Approach 2:
The patent applies parameter changes by using reception capability parameters to dynamically adjust the number of data packets demodulated. The receiver determines a first quantity based on these parameters, which may include time intervals, channel numbers, or bit capacities, allowing the device to adapt its processing load to match its capabilities and reduce missed packets.
4Use of energy by moving object
If the terminal device limits the number of data packets demodulated due to power consumption constraints, then the power consumption is reduced, but the quantity of missed data packets increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring reception capability parameters that define the maximum number of data packets the terminal can demodulate. The receiver determines a first quantity based on these pre-set parameters before actual reception, allowing the device to operate within its capability limits while minimizing missed packets through optimized parameter selection.
Solution Approach 2:
The patent applies parameter changes by using reception capability parameters to dynamically adjust the number of data packets demodulated. The receiver determines a first quantity based on these parameters, which may include time intervals, channel numbers, or bit capacities, allowing the device to adapt its processing load to match its capabilities and reduce missed packets.
Data Source
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AI summary
This application provides a communication method and apparatus, to help properly control a loss caused by miss detection of a data packet, and help achieve an optimal balance point between a cost and detection performance of a terminal. The method includes: A first terminal apparatus determines a reception capability parameter and/or a transmission capability parameter based on a first parameter, where the reception capability parameter includes a quantity of channels that can be received in a first time interval, and/or a maximum quantity of received bits, the transmission capability parameter includes a maximum quantity of transmitted bits, and the first parameter is preconfigured, or the first parameter is configured by a network device, where the first parameter is used for sidelink transmission, and the first parameter includes one or more of the following: a maximum interval between slots of initial transmission and last retransmission, a subcarrier spacing, and a sub-band size. The first terminal apparatus performs sidelink transmission based on the reception capability parameter and/or the transmission capability parameter.