eMBMS Control Information Ordering for MBSFN Coherence
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Solution Overview
Problem
In wireless telecommunications networks with distributed MCE functionality, non-coherent allocations of radio resources by different eNB/MCEs can result in failure of MBSFN transmission reception at wireless devices, as the order of Multicast Traffic Channels (MTCHs) may differ arbitrarily between network nodes, leading to inconsistent content delivery.
Innovation Solution
Configuring the indication of MTCHs in MBSFN area configuration information and MCH Scheduling Information (MSI) based on a unified order of logical channel identities, ensuring that all network nodes transmit MTCHs in the same order, thereby maintaining coherent content delivery across the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If distributed MCE functionality is used to enable independent radio resource allocation at each eNB, then network flexibility and decentralization are improved, but transmission coherence and reliability deteriorate due to arbitrary MTCH ordering differences between network nodes
Solution Approach 1:
The patent changes the ordering parameter of MTCHs from arbitrary local ordering at each eNB to a unified order based on logical channel identities. This parameter change ensures that all network nodes in the MBSFN area transmit MTCHs in the same consistent order, resolving the coherence issue while maintaining distributed architecture flexibility
Solution Approach 2:
The patent creates equipotentiality in the ordering condition across all distributed eNBs by establishing a common reference (logical channel identity order). This ensures that all network nodes operate under the same ordering condition, eliminating differences that cause transmission failures while preserving distributed operation
2Ease of manufacture
If arbitrary ordering of MTCHs is allowed at each network node, then configuration simplicity is improved, but content delivery consistency deteriorates causing reception failures at wireless devices
Solution Approach 1:
The patent modifies the ordering parameter from arbitrary local configuration to a standardized order based on logical channel identities. This parameter change maintains configuration simplicity while ensuring precise consistent delivery across all network nodes by eliminating arbitrary variations
Data Source
AI summary
A method performed by a network node for transmitting enhanced Multimedia Broadcast Multicast Services, eMBMS, control information to wireless devices in a wireless telecommunications network is provided. The eMBMS control information comprises MBMS Single Frequency Network, MBSFN, area configuration information and MCH Scheduling Information, MSI, for a Multicast CHannel, MCH. The MBSFN area configuration information and the MSI indicate Multicast Traffic Channels, MTCHs, for the eMBMS. The network node configures the indication of the MTCHs in the MBSFN area configuration information and in the MSI based on an order of logical channel identities of the MTCHs that is set in the network node. Then, the network node transmits the MBSFN area configuration information and MSI to the wireless devices in the wireless telecommunications network.A network node and a system are also provided.