Short Service ID Mapping for Wireless Broadcast Scheduling
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in supporting broadcast and multicast services due to the use of long service IDs, which consume more radio resources and complicate scheduling information transmission.
Innovation Solution
Implementing a system where transmitters send configuration information using short service IDs for advertised services, reducing the amount of scheduling information needed, and providing separate messages for identifying transmitted and advertised but not transmitted services to allow UEs to determine service availability and request services efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If long service IDs are used to identify services, then service identification accuracy is improved, but the amount of scheduling information and radio resource consumption increases
Solution Approach 1:
The service identification system is segmented into two parts: long service IDs for precise service identification and short service IDs for efficient scheduling information transmission. The mapping between long and short service IDs allows the system to maintain identification accuracy while reducing the quantity of scheduling information transmitted over the air interface.
Solution Approach 2:
A mapping relationship acts as an intermediary between long service IDs and short service IDs. This mapping table, maintained by both the network side and terminal side, enables translation between the two identification methods, allowing long service IDs to be used for precise identification while short service IDs are used for compact scheduling information transmission.
2Loss of information
If long service IDs are used in scheduling information, then service identification completeness is improved, but transmission latency and processing overhead increase
Solution Approach 1:
The identification system is divided into long service IDs for complete service identification and short service IDs for time-critical scheduling operations. This segmentation allows the system to use short service IDs in scheduling information to reduce transmission latency while maintaining complete service identification through the mapping relationship.
Solution Approach 2:
The system changes the identification parameter from long service IDs to short service IDs specifically in scheduling information transmission. This parameter change reduces the number of bits required for transmission, thereby reducing transmission latency and processing overhead while the mapping relationship ensures complete service identification is maintained.
3Reliability
If all advertised services are transmitted continuously, then service availability is improved, but radio resource efficiency deteriorates
Solution Approach 1:
The service transmission system is made dynamic by allowing services to be advertised in advance and then activated or deactivated based on actual demand. Services are advertised with their long service IDs and mapping relationships, but actual transmission only occurs when terminals express interest, optimizing radio resource efficiency while maintaining service availability.
Solution Approach 2:
Service configuration information including long service IDs and mapping relationships is prepared in advance and made available to terminals through system information blocks. This preliminary action allows terminals to know about available services without requiring continuous transmission, enabling on-demand activation and improving radio resource efficiency.
Data Source
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AI summary
Techniques for support broadcast and multicast services in a wireless communication system are described. In an aspect, a transmitter (e.g., a Node B) sends configuration information conveying a mapping of long service identifiers (IDs) to short service IDs for advertised services. The transmitter also sends scheduling information conveying a mapping of short service IDs to radio resources used for scheduled services in the current scheduling period. The short service IDs reduce the amount of scheduling information to send. In another aspect, the transmitter sends information identifying services being transmitted and services being advertised but not transmitted. Receivers (e.g., UEs) may use this information to determine whether or not to send requests for services of interest. In yet another aspect, the transmitter sends configuration information for services being advertised but not transmitted. This may allow the transmitter to start these services quicker when requested by the receivers.