Mobile Network Forwarding Device Reducing Transmission Latency
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Solution Overview
Problem
Current communication technologies face high transmission latency issues, particularly in mobile networks, which is a challenge for services requiring low latency, such as the Internet of Vehicles, due to the need for data packets to be forwarded through multiple devices.
Innovation Solution
A communication method where a forwarding device in a mobile network receives a data packet with a target field containing information about the destination terminal device or area, allowing it to send the data directly without routing through a server, thereby reducing latency by parsing the data packet at layer 2 instead of layer 3.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data packets are forwarded through multiple devices (access network device, core network device, server) in traditional mobile network architecture, then routing and addressing functions can be properly implemented, but transmission latency increases significantly
Solution Approach 1:
The patent extracts the routing and addressing function from the server and implements it directly in the access network device. The access network device obtains destination address information from the data packet and uses it to directly forward packets to terminal devices, eliminating the need to route through core network devices and servers. This extraction of the routing function to the network edge resolves the contradiction by maintaining reliable routing while dramatically reducing transmission latency.
Solution Approach 2:
The patent introduces a new dimension to the network architecture by enabling access network devices to perform layer 3 routing functions in addition to their traditional layer 2 forwarding functions. This dimensional expansion allows the network to bypass traditional hierarchical routing paths, creating direct forwarding routes that reduce latency while maintaining routing reliability through the integrated address lookup and forwarding capability.
2Loss of time
If access network devices perform layer 3 packet parsing to obtain routing information, then direct forwarding is possible, but processing burden and complexity increase
Solution Approach 1:
The patent applies partial action by having access network devices perform only the essential layer 3 function of extracting the destination address from the IP packet header, without implementing full layer 3 routing logic. The device parses just enough of the packet to obtain the destination address, then uses this information for direct forwarding. This partial parsing approach reduces latency compared to traditional multi-hop routing while avoiding the excessive processing burden of complete layer 3 protocol stacks.
3Stability of the object's composition
If traditional multi-device forwarding is used, then network architecture stability is maintained, but transmission latency becomes too high for latency-sensitive services
Solution Approach 1:
The patent makes access network devices multi-functional by enabling them to perform both traditional layer 2 switching and layer 3 routing functions. This universality allows the network to maintain its established hierarchical architecture for stability while simultaneously enabling low-latency direct forwarding paths. The access network device can handle both traditional routed traffic and new direct-forwarding traffic, making the system adaptable to latency-sensitive services without compromising architectural stability.
Data Source
AI summary
This application provides a communication method and a communications apparatus. The communication method may includes receiving, by a first forwarding device in a mobile network, a first data packet, where the first data packet carries first data from a first terminal device, the first data packet includes a target field, information carried in the target field is used to determine target information. The target information may include information about at least one second terminal device or information about a first area, the second terminal device is a terminal device to which the first data needs to be sent, and the first area is an area to which the first data needs to be broadcast. The communications method may also include sending, by the first forwarding device, a second data packet based on the target information, where the second data packet carries the first data, so that the first forwarding device does not need to send the first data to a device such as a server configured to implement a routing and addressing function, thereby reducing a transmission latency.