Network-Controlled RRC Resume via Paging or Random Access Response
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Solution Overview
Problem
In wireless communication networks, especially for machine-type communications, the RRC Resume procedure can result in increased signaling and battery consumption when the prior RRC connection context is unavailable or invalid, leading to suboptimal performance and resource wastage.
Innovation Solution
The eNB sends a paging message or Random Access Response message containing an RRC Resume directive to the radio network device, indicating whether to perform an RRC Resume procedure, thereby avoiding unnecessary signaling and optimizing the reconnection process by directing the device to proceed with a new RRC Connection if the context is not available or valid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radio network device performs RRC Resume procedure to re-establish connection, then connection re-establishment is achieved, but signaling load and battery consumption increase when prior context is unavailable or invalid
Solution Approach 1:
The network performs preliminary validation of the RRC connection context before the device initiates the RRC Resume procedure. By checking context availability and validity in advance, the network can direct the device to perform a new RRC Connection setup instead of attempting Resume, thereby avoiding unnecessary signaling and battery consumption while ensuring reliable connection re-establishment.
2Reliability
If the radio network device performs RRC Resume procedure, then connection re-establishment is achieved, but signaling load increases when context is unavailable or invalid
Solution Approach 1:
The network performs preliminary validation of the RRC connection context before the device initiates the RRC Resume procedure. By checking context availability and validity in advance, the network can direct the device to perform a new RRC Connection setup instead of attempting Resume, thereby avoiding unnecessary signaling while ensuring reliable connection re-establishment.
Solution Approach 2:
The network provides feedback to the device about the validity and availability of the RRC connection context through paging messages or random access response messages. This feedback mechanism enables the device to make an informed decision about whether to attempt RRC Resume or proceed with new RRC Connection setup, thereby optimizing signaling load.
3Ease of operation
If the network allows device to attempt RRC Resume without context validation, then device autonomy is maintained, but resource wastage occurs
Solution Approach 1:
The network provides feedback to the device about the validity and availability of the RRC connection context through paging messages or random access response messages. This feedback mechanism enables the device to autonomously decide whether to attempt RRC Resume or proceed with new RRC Connection setup based on network conditions, thereby maintaining device autonomy while avoiding resource wastage.
Data Source
AI summary
In a wireless communication network that implements the RRC Resume procedure, an eNB sends to a radio network device, previously connected, given a Resume ID, a paging message or Random Access Response message including an RRC Resume directive. The RRC Resume directive comprises at least an indication whether or not the radio network device should perform an RRC Resume procedure. If RRC Resume directive indicates the radio network device should not perform an RRC Resume procedure, the radio network device performs an RRC Connection procedure. If the RRC Resume directive indicates the radio network device should perform an RRC Resume procedure, it may include additional information to optimize or otherwise assist the RRC Resume procedure. In this manner, RRC Resume signaling is avoided when the eNB knows that it will not be successful, such as if a prior RRC connection context is not available or readily retrievable, or is invalid.