HeNB MBMS Service Filtering to Reduce Gateway Link Load
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Solution Overview
Problem
The existing methods for transmitting Multimedia Broadcast Multicast Service (MBMS) in Home evolved NodeB (HeNB) result in high load on the transmission link between the gateway and HeNB, as all MBMS services are transmitted, leading to unnecessary data transfer and increased load.
Innovation Solution
The method involves the HeNB sending a service identifier to the gateway, allowing it to selectively transmit only the required data packets and synchronization control packets on a specific multicast channel, reducing unnecessary data transfer and lowering the transmission link load by not sending data packets for services not required by the HeNB.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If all MBMS service data packets are transmitted to each HeNB through the gateway, then the HeNB can provide complete MBMS services to UEs, but the transmission link load between gateway and HeNB becomes excessively high
Solution Approach 1:
The patent extracts only the necessary MBMS service data packets that match the HeNB's service requirements from the complete set of MBMS services. The gateway filters and transmits only the relevant data packets to each HeNB based on service matching, rather than transmitting all MBMS service data. This extraction principle directly reduces the transmission data volume while maintaining the ability to provide required services.
Solution Approach 2:
The patent segments the MBMS service data transmission by dividing it into service-specific portions. Each HeNB receives segmented data packets corresponding only to its subscribed services, rather than receiving the complete undivided stream of all MBMS services. This segmentation approach allows selective reception and reduces overall transmission load on the gateway-HeNB link.
2Adaptability or versatility
If the gateway transmits data packets of all services mapped onto the same transmission channel to each HeNB, then all services can be supported, but the transmission link load becomes too large
Solution Approach 1:
The gateway extracts and transmits only the data packets corresponding to services that match the HeNB's requirements, rather than transmitting all services mapped onto the same transmission channel. This selective extraction maintains service support capability while improving transmission efficiency by eliminating unnecessary data transfer.
Solution Approach 2:
Instead of transmitting the complete set of all services (excessive action), the gateway transmits only the partial set of services that are actually required by the HeNB. This partial transmission approach avoids the inefficiency of transmitting excessive data that the HeNB cannot use, thereby improving overall transmission efficiency.
Data Source
AI summary
A method, device and system are used for transmitting a Multimedia Broadcast Multicast Service (MBMS). The method includes sending, by a first base station, a service identifier of a MBMS that needs to be received by a user equipment in a coverage area of the first base station to a gateway. The first base station receives a data packet of the MBMS and a synchronization control packet on a first multicast channel which are sent by the gateway. The first multicast channel is a multicast channel where the MBMS is located.