SCPTM Service RRC Connection Control
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Solution Overview
Problem
In wireless communication systems, especially in LTE-A, the existing technologies for single-cell point-to-multipoint (SCPTM) transmission face inefficiencies due to static MBSFN area configurations and resource wastage, as they do not allow dynamic adjustment according to user distribution or traffic load, and require unnecessary RRC connections for services that do not need HARQ feedback or CSI reporting.
Innovation Solution
A method for a user equipment (UE) to determine if an SCPTM service requires an RRC connection by receiving a list of available services from a serving cell, establishing an RRC connection only when necessary, and configuring HARQ feedback or CSI reporting as needed, using broadcast or multicast control channels for service identification and configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE establishes an RRC connection to receive SCPTM services, then the UE can perform HARQ feedback and CSI reporting, but radio resources are unnecessarily consumed for services that do not require these features
Solution Approach 1:
The patent introduces a new parameter 'SCPTM-RNTI' (Single Cell Point-to-Multipoint Radio Network Temporary Identifier) to differentiate between SCPTM services requiring RRC connection and those that do not. By changing the identification parameter structure, the system can dynamically determine whether a UE needs to establish an RRC connection based on the specific service characteristics, thereby avoiding unnecessary resource consumption while maintaining reliable HARQ feedback and CSI reporting when needed.
2Ease of manufacture
If MBSFN area configuration is set statically by O&M, then network configuration is simplified, but radio resources cannot be dynamically adjusted according to user distribution and traffic load
Solution Approach 1:
The patent enables dynamic adjustment of SCPTM service configurations by allowing the network to flexibly configure SCPTM-RNTI values and service parameters based on real-time user distribution and traffic load conditions. This dynamic configuration capability allows the system to adapt radio resources to changing network conditions while maintaining operational simplicity through standardized configuration procedures.
Data Source
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AI summary
Provided are: a method by which a terminal, which is interested in a single-cell point-to-multipoint (SCPTM) transmission, establishes an RRC connection in a wireless communication system; and a device for supporting the same. A list of available SCPTM services is received from a serving cell, it is determined whether the SCPTM service of interest from among the received list of the available SCPTM services is a first-type SCPTM service or a second-type SCPTM service, the RRC connection with a network is established when the determined SCPTM service of interest is the second-type SCPTM service, and the second-type SCPTM service can be received through the established RRC connection. The first-type SCPTM service is a service for which RRC connection establishment is not required for the SCPTM service, and the second-type SCPTM service is a service for which RRC connection establishment is required for the SCPTM service.