UE Capability Reporting Before RRC Connection Establishment
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Solution Overview
Problem
There is a need for a scheme to support seamless communication by enhancing the method of providing user equipment (UE) capability information in wireless communication systems, particularly in the context of 5G and IoT networks, where low-complexity UEs need to efficiently report their capabilities to base stations.
Innovation Solution
A method and apparatus for UE capability information reporting in wireless communication systems, involving type 1, type 2, and type 3 capability information transmission and reception between UEs and base stations, allowing UEs to deliver capability information before establishing an RRC connection, enabling efficient determination and support for seamless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If UE capability information is reported after RRC connection establishment, then connection establishment procedure is completed, but communication setup time is increased
Solution Approach 1:
The patent applies preliminary action by having the UE transmit capability information in the RRCSetupRequest message before the RRC connection is fully established. This allows the base station to receive capability information in advance, enabling faster determination of appropriate communication parameters and reducing overall setup time without adding significant procedural complexity.
2Loss of information
If multiple types of capability information are transmitted, then comprehensive UE capabilities are reported, but message overhead is increased
Solution Approach 1:
The patent merges multiple types of capability information (type 1, type 2, and type 3) into a single RRCSetupRequest message. This combining approach ensures comprehensive capability reporting while minimizing message overhead by transmitting all necessary information in one unified message rather than multiple separate transmissions.
Solution Approach 2:
The RRCSetupRequest message is enhanced to serve multiple functions: it not only initiates the RRC connection setup but also carries comprehensive UE capability information (type 1, type 2, and type 3). This multi-functionality reduces the need for separate capability reporting messages, thereby reducing overall message overhead while maintaining information completeness.
3Productivity
If base station processes capability information early in connection setup, then communication efficiency is improved, but processing complexity at base station is increased
Solution Approach 1:
The base station processes capability information early in the connection setup procedure by receiving it in the RRCSetupRequest message. This preliminary processing allows the base station to determine appropriate communication parameters, resource allocation, and configuration before the RRC connection is fully established, improving communication efficiency without requiring complex post-connection processing.
Data Source
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AI summary
The disclosure provides a method of reporting user equipment (UE) capability information by a UE, the method including receiving, from a base station (BS), system information including an indicator supporting a type 2 UE; performing camp-on for a serving cell corresponding to the BS based on the system information; performing a radio resource control (RRC) connection establishment procedure with the BS; transmitting, to the BS, an RRCSetupRequest message including type 1 capability information of the UE; receiving an RRCSetup message from the BS; transmitting, to the BS, type 3 UE capability information of the UE in an RRCSetupComplete message in response to the RRCSetup message; receiving a UE capability enquiry message from the BS; and transmitting at least one of the type 1 capability information, type 2 capability information and type 3 capability information of the UE to the BS in response to the UE capability enquiry message.