Home NodeB Gateway U-RNTI Allocation via Dynamic Prefix Segmentation
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Solution Overview
Problem
The existing Home NodeB Gateway systems face increased implementation complexity and time delays due to the need to manage and allocate U-RNTIs, which is exacerbated by the requirement to check for conflicts and traverse stored identities in the HNB network.
Innovation Solution
The proposed solution involves dynamically allocating U-RNTIs based on capability information reported by Home NodeBs, using prefix information with varying lengths to identify HNBs and UEs, allowing the Home NodeB Gateway to manage U-RNTIs through a tree structure, reducing the need for individual U-RNTI management and conflict checking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the Home NodeB Gateway manages and allocates U-RNTIs individually, then U-RNTI allocation can be controlled, but implementation complexity increases and time delays occur due to conflict checking and traversing stored identities
Solution Approach 1:
The patent segments the U-RNTI structure into two parts: a high-order prefix portion and a low-order suffix portion. The prefix is allocated by the HNB-GW to identify the HNB, while the suffix is allocated locally by the HNB to identify individual UEs. This segmentation allows the HNB-GW to manage only the prefix portion, significantly reducing the complexity and storage requirements compared to managing complete U-RNTIs individually.
Solution Approach 2:
The patent introduces a hierarchical dimension to U-RNTI management by separating the identity space into multiple levels: the HNB-GW manages the high-order prefix dimension to identify HNBs, while the HNB manages the low-order suffix dimension to identify UEs. This dimensional separation transforms a flat, complex management problem into a structured hierarchical system.
2Manufacturing precision
If the Home NodeB Gateway checks for conflicts and traverses stored U-RNTIs, then allocation accuracy is maintained, but time delays increase
Solution Approach 1:
The patent applies preliminary action by having the HNB-GW pre-allocate the U-RNTI prefix to each HNB before the HNB needs to allocate complete U-RNTIs to UEs. This pre-allocation establishes a reserved identity space for each HNB, eliminating the need for real-time conflict checking and traversal during UE attachment, thus maintaining accuracy while reducing time delay.
3Ease of manufacture
If fixed-length prefix information is used for U-RNTI allocation, then allocation is simplified, but adaptability to different deployment scenes is reduced
Solution Approach 1:
The patent implements dynamics by allowing the prefix length to be configurable and adaptable to different deployment scenarios. The HNB-GW can allocate prefixes of different lengths to HNBs based on their specific needs, such as the number of UEs they need to support. This dynamic approach maintains allocation simplicity while providing flexibility for various deployment scenes.
Data Source
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AI summary
The present invention discloses a method and system for allocating Network Temporary Identities. The method comprises: obtaining capability information of a Home NodeB; allocating information for performing identity allocation to the Home NodeB, according to the capability information; sending the allocated information for performing identity allocation to the Home NodeB, so that the Home NodeB implements network temporary identity allocation according to the information for performing identity allocation; wherein the different information for performing identity allocation corresponds to different Home NodeBs to implement the network temporary identity allocation. The technical solution disclosed by the present invention can reduce the implementation complexity of Home NodeB Gateway and the time delay.