Configurable Cause Value in RRC Connection Requests
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Solution Overview
Problem
Current wireless communication systems, particularly in LTE, face challenges in configuring a cause value for RRC connection requests, leading to potential rejection of voice services treated as mobile data, resulting in inefficient resource allocation and service prioritization.
Innovation Solution
A method and apparatus that allow user equipment (UE) to receive a configurable cause value from the network and set it in the RRC connection request message, enabling specific service types like MMTEL voice to be identified and prioritized, thereby avoiding rejection and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voice services are treated as mobile data in RRC connection requests, then resource allocation follows general data protocols, but voice services may be rejected or misprioritized
Solution Approach 1:
The patent changes the establishment cause parameter value from generic data access indicators to specific voice service indicators. The UE sets the establishment cause to a predetermined value that explicitly indicates voice service type, allowing the network to distinguish voice traffic from general data traffic and apply appropriate prioritization policies.
Solution Approach 2:
The establishment cause field acts as an intermediary parameter that carries service type information from the UE to the network. By setting this field to a specific predetermined value, the UE enables the network to identify voice services without requiring complex service description protocols, thus resolving the contradiction between reliability and adaptability.
2Measurement precision
If configurable cause values are not used, then RRC connection requests use standard establishment causes, but voice services may be incorrectly classified as mobile data
Solution Approach 1:
The UE performs preliminary configuration of the establishment cause field before initiating the RRC connection request. By pre-setting the cause value to indicate voice service type, the classification accuracy is improved without requiring complex real-time analysis or additional signaling during the connection establishment process.
3Productivity
If standard establishment causes are used, then the RRC connection request structure remains simple, but resource allocation efficiency decreases due to misclassification
Solution Approach 1:
The patent modifies the establishment cause parameter to encode service type information. By changing the parameter value to a predetermined indication of voice service, the system preserves service type information that would otherwise be lost, enabling more efficient resource allocation without adding significant complexity to the request structure.
Data Source
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AI summary
A method and apparatus for transmitting a connection request message in a wireless communication system is provided. A user equipment (UE) receives a configuration of a specific value of a configurable cause from a network, and transmit a connection request message including the configurable cause set to the specific value to the network.