5G Transmission Channel Frequency Allocation for URLLC Latency
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Solution Overview
Problem
Existing 5G mobile networks face challenges in providing deterministic transmission performance for packets, particularly for ultra-reliable and low-latency communications, due to the best-effort forwarding mechanism which cannot ensure all packets with the same priority are forwarded within a valid latency range, leading to inadequate transmission performance for services like URLLC.
Innovation Solution
An information transmission method that determines a suitable transmission channel with a packet sending frequency greater than or equal to the sum of packet sending frequencies of packet flows and sends identification information to ensure packets are transmitted based on the channel's supported frequency, thereby reducing transmission delay and meeting transmission performance requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a best effort forwarding mechanism is used in the switch, then the device complexity is reduced and ease of operation is improved, but the transmission reliability and latency performance deteriorate for URLLC services
Solution Approach 1:
The patent segments the transmission channel into multiple virtual channels, each with different packet sending frequencies. By dividing the single channel into multiple frequency-based virtual channels, the system can provide differentiated transmission services while maintaining a relatively simple forwarding mechanism. The switch forwards packets based on their required sending frequency rather than complex priority queuing, thus resolving the contradiction between simplicity and reliability.
Solution Approach 2:
The patent changes the parameter of packet sending frequency to differentiate transmission services. Instead of using complex priority queuing mechanisms, the system uses packet sending frequency as the key parameter to determine transmission behavior. This parameter change allows the simple forwarding mechanism to achieve reliable URLLC transmission by ensuring packets are sent at the required frequency regardless of queue depth or buffer status.
2Quantity of substance
If multiple packets with the same priority are queued in the switch, then the buffer capability is utilized, but the transmission latency increases and deterministic performance cannot be ensured
Solution Approach 1:
The patent introduces dynamic packet sending frequency requirements for different packet flows. Instead of static priority queuing, the system dynamically adjusts transmission behavior based on the specific frequency requirements of each packet flow. This dynamic approach allows the switch to buffer packets efficiently while ensuring that URLLC packets are transmitted at their required frequency, preventing excessive latency accumulation.
Solution Approach 2:
The patent uses packet sending frequency as a dynamic parameter to control transmission timing. By changing from static priority-based forwarding to frequency-based forwarding, the system can ensure that packets are transmitted at precise intervals required by URLLC services. This parameter change allows the switch to utilize buffer capacity without causing excessive latency, as transmission timing is determined by frequency requirements rather than queue position.
3Reliability
If the packet sending frequency of the transmission channel is increased to meet URLLC requirements, then the transmission reliability improves, but the device complexity and resource requirements increase
Solution Approach 1:
The patent makes the transmission channel universal by enabling it to support multiple packet flows with different sending frequency requirements. Instead of configuring separate dedicated channels for each service type, the system uses a single transmission channel that can dynamically adapt to different frequency requirements. This multi-functionality reduces device complexity while maintaining high reliability for URLLC services.
Solution Approach 2:
The patent uses packet sending frequency as a configurable parameter to meet different service requirements with a single channel. By changing the frequency parameter rather than creating multiple physical channels, the system achieves high transmission reliability for URLLC without increasing device complexity. The channel can be reconfigured for different frequency requirements through software rather than hardware changes.
Data Source
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AI summary
This application provides an information transmission method and apparatus. The method includes: determining, by a control device, a first transmission channel in at least one transmission channel configured between a first network device and a second network device, where the first transmission channel is used to transmit a packet that belongs to at least one packet flow, a packet sending frequency currently supported by the first transmission channel is greater than or equal to a sum of packet sending frequencies of the at least one packet flow, and transmission performance of the first transmission channel meets transmission performance of the at least one packet flow; and sending, by the control device, first identification information to the first network device, where the first identification information is used to identify the first transmission channel. Therefore, this helps to meet a requirement for transmission performance of a packet in a mobile network.