Short Packet Data via Signaling Radio Bearer
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Solution Overview
Problem
Current 3G wireless communication systems face inefficiencies in handling frequent, low-data network requests from 'chatty' applications, as they require significant signaling overhead and resource-intensive DRB channel establishment for each small data transmission, leading to network congestion and increased resource usage.
Innovation Solution
Implementing a Short Packet Data Service (SPDS) that allows wireless devices to transmit short, low-data application messages directly via the SRB channel instead of creating a DRB channel, using criteria such as data size thresholds and explicit application requests to determine the most efficient transmission path, thereby reducing signaling overhead and network resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a DRB channel is established for each small data transmission, then reliable data transmission is ensured, but signaling overhead and network resource consumption increase significantly
Solution Approach 1:
The patent extracts the data transmission function from the traditional DRB channel establishment process. Instead of establishing a full DRB channel for small data transmissions, the invention allows small packets to be transmitted directly through the SRB channel by removing the requirement for DRB setup, thereby eliminating the associated signaling overhead while maintaining transmission capability
Solution Approach 2:
The patent inverts the traditional approach by allowing data transmission through the control plane (SRB channel) rather than requiring the user plane (DRB channel). Normally, data transmission requires establishing a user plane bearer, but this invention enables small data packets to be sent through the control plane signaling channel, reversing the conventional data path
2Productivity
If a DRB channel is established for each small data transmission, then data transmission capability is ensured, but network resource utilization increases
Solution Approach 1:
The SRB channel, traditionally used only for control signaling, is given a dual function by also carrying small data packets. This multi-functionality allows the same channel to handle both signaling and data transmission, eliminating the need for separate DRB channel establishment and reducing overall network resource consumption
3Reliability
If DRB channel establishment is performed for each small data transmission, then transmission reliability is maintained, but transmission time increases
Solution Approach 1:
The RRC connection and SRB channel are established in advance before small data transmissions are needed. By having the control plane connection ready beforehand, small packets can be transmitted immediately without requiring time-consuming DRB channel setup procedures, thus reducing transmission latency while maintaining reliability
Data Source
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AI summary
A novel message exchange protocol is disclosed. In one example, a method of transmitting data includes generating, with a wireless device, an application data message for an application; evaluating one or more criteria for determining whether to send the application data message via a data radio bearer (DRB) channel or via a signaling radio bearer (SRB) channel that communicatively couples the wireless device to a network resource; and based on determining to send the application data message via the SRB channel, sending the application data message to the network resource via the SRB channel.