Multicast Resource Configuration via Base Station Broadcast
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Solution Overview
Problem
Current multicast transmission methods in mobile networks incur high signaling overheads due to the need for each user to individually request and configure resource settings for receiving multicast services from other cells, which is inefficient and resource-intensive.
Innovation Solution
A method where a base station actively broadcasts multicast resource information from one cell to user equipment, reducing the need for unicast configuration by directly sending the resource configuration for multicast services from other cells, thereby minimizing signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If each user applies to the cell for obtaining resource configuration of another cell in unicast manner, then users can obtain multicast service data of another cell, but signaling overheads increase significantly
Solution Approach 1:
The patent merges the resource configuration information of multiple cells into a single broadcast message. Instead of each user receiving individual unicast configurations from their serving cell, the serving cell broadcasts a unified configuration that includes resource allocation information for multicast services from multiple neighboring cells, thereby reducing signaling overhead while maintaining ease of operation
Solution Approach 2:
The broadcast message serves multiple functions simultaneously: it provides resource configuration for multicast services from the serving cell itself, from neighboring cells, and enables users to identify and join appropriate multicast groups. This multi-functional approach eliminates the need for separate unicast signaling for each configuration scenario
2Productivity
If base station broadcasts multicast resource information, then signaling overheads are reduced, but users need to determine whether to receive multicast service data based on resource configuration
Solution Approach 1:
The base station performs preliminary action by broadcasting resource configuration information in advance before users need to receive multicast services. The configuration includes pre-calculated resource allocations, cell identifiers, and service parameters that users can directly use without requiring complex real-time determination or additional signaling exchanges
Data Source
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AI summary
A multicast transmission method is disclosed. A base station of a first cell obtains first multicast resource information of at least one second cell, where the base station of the first cell is different from a base station of each second cell; and the base station of the first cell sends second multicast resource information to user equipment, where the second multicast resource information is used to indicate a resource configuration used by each second cell to transmit multicast service data. The base station of the first cell actively sends obtained multicast resource information to the user equipment in a broadcast manner. In this way, the base station of the first cell does not need to configure, in a unicast manner for each user equipment, a resource location for sending/reading the multicast service data of each second cell, thereby reducing signaling overheads.