DeNB Resource Status Mapping for LTE Relay Routing
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Solution Overview
Problem
In LTE systems with relay nodes, the lack of address information for source nodes leads to routing failures when attempting to route resource status response messages and status reports, as the DeNB cannot correctly identify the source eNB.
Innovation Solution
The implementation of a resource status mapping procedure that involves allocating a Measurement ID to the source eNB by the DeNB, allowing the DeNB to establish context information and correctly route resource status response messages or status reports to the source eNB through the relay nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relay nodes are deployed to extend network coverage, then coverage area is improved, but routing reliability deteriorates due to lack of source node address information
Solution Approach 1:
The patent applies preliminary action by establishing context information and allocating Measurement IDs at the DeNB before resource status reporting occurs. This pre-configuration enables the DeNB to correctly route response messages back to source eNBs through relay nodes, preventing routing failures that would otherwise occur due to the lack of source address information in relayed communications.
Solution Approach 2:
The patent uses the DeNB as an intermediary that maintains context information mapping between Measurement IDs and source eNB identities. This intermediary role allows the DeNB to receive resource status requests from source eNBs, forward them through relay nodes to target eNBs, and then route the corresponding response messages back to the correct source eNBs using the stored context information, thus solving the routing problem in relayed communications.
2Measurement precision
If Measurement ID allocation is implemented at DeNB, then routing accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by making the DeNB perform multiple functions: it acts as a donor eNB providing coverage, as a relay coordinator managing context information, and as a routing switch allocating Measurement IDs. By consolidating these functions at the DeNB, the patent avoids the need for separate routing infrastructure, thereby managing complexity while achieving accurate routing through relay nodes.
Data Source
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AI summary
The present invention discloses a mapping method and apparatus for resource status process, and the method comprises the following steps: DeNB receives resource status information from RN; said DeNB acquires the address of source eNB according to said resource status information and context information; said DeNB sends said resource status information to said source eNB according to the address of said source eNB. In the present invention, context information on DeNB is established for source eNB to enable DeNB to route resource status response message or resource status report to correct source eNB apparatus according to context information.