Enhanced Paging With UL Grants for IIoT Random Access
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Solution Overview
Problem
In 5G/4G mobile communication systems, the random access procedure for Industrial Internet of Things (IIoT) devices is inefficient due to collisions caused by limited RACH and PUSCH resources, leading to prolonged connection times and increased power consumption, especially in scenarios where a large number of devices need to connect simultaneously.
Innovation Solution
An enhanced paging procedure that includes an UL grant in the paging message, allowing IIoT devices to transmit signals directly to the network without needing to enter the RRC_CONNECTED state, thereby reducing the number of steps and resources required for connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the traditional random access procedure is used for IIoT devices, then devices can establish connection with the network, but connection time is prolonged and power consumption increases due to multiple signaling steps and resource contention
Solution Approach 1:
The network pre-allocates UL grants to IIoT devices in advance, storing them in a grant pool. When a device needs to access the network, it can immediately use the pre-assigned grant without going through the traditional random access procedure, thereby eliminating connection establishment time and reducing power consumption.
2Reliability
If the traditional random access procedure is used for IIoT devices, then devices can establish connection with the network, but power consumption increases due to multiple signaling steps and contention
Solution Approach 1:
The network pre-allocates UL grants to IIoT devices in advance, storing them in a grant pool. When a device needs to access the network, it can immediately use the pre-assigned grant without going through the traditional random access procedure, thereby eliminating connection establishment time and reducing power consumption.
3Quantity of substance
If limited RACH and PUSCH resources are used, then network resources are conserved, but device connection efficiency decreases due to collisions when many devices connect simultaneously
Solution Approach 1:
The network pre-allocates UL grants to IIoT devices in advance, storing them in a grant pool. When a device needs to access the network, it can immediately use the pre-assigned grant without going through the traditional random access procedure, thereby eliminating connection establishment time and reducing power consumption.
Solution Approach 2:
The patent introduces a paging message as an intermediary carrier that conveys the pre-configured UL grant from the network to the IIoT device. This intermediary mechanism enables efficient resource allocation without requiring real-time random access signaling, thus resolving the contradiction between resource conservation and connection efficiency.
4Reliability
If the traditional random access procedure with multiple signaling steps is used, then reliable connection establishment is achieved, but signaling overhead and latency increase
Solution Approach 1:
The network pre-allocates UL grants to IIoT devices in advance, storing them in a grant pool. When a device needs to access the network, it can immediately use the pre-assigned grant without going through the traditional random access procedure, thereby eliminating connection establishment time and reducing power consumption.
Solution Approach 2:
The patent introduces a paging message as an intermediary carrier that conveys the pre-configured UL grant from the network to the IIoT device. This intermediary mechanism enables efficient resource allocation without requiring real-time random access signaling, thus resolving the contradiction between resource conservation and connection efficiency.
Data Source
AI summary
Disclosed are devices supporting an enhanced paging procedure for random access or small data transmission. An example UE may include at least one processor and at least one memory including computer program code. The at least one memory and the computer program code may be configured to, with the at least one processor, cause the UE to receive a paging message from a network device and transmit a signal to the network device using an UL grant. The paging message may include an identity of the UE (UE ID) and the UL grant. The related methods, apparatuses and computer program products are also disclosed.