Radio Resource Configuration for Simultaneous MBMS and HSDPA Reception
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Solution Overview
Problem
In UMTS networks, the allocation of HSDPA channels to terminals can interfere with the reception of MBMS services, leading to packet loss and reduced battery life, as terminals cannot effectively receive MBMS, PS, and CS services simultaneously, especially in the CELL_DCH state.
Innovation Solution
A method to control the UTRAN network to prevent HSDPA channel allocation by determining terminal support for DCH service over HSDPA, allowing for resource allocation necessary for simultaneous MBMS, PS, and CS services through signaling indicating non-support for HSDPA and support for DCH service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HSDPA channel is allocated to terminal in CELL_DCH state, then high-speed data transmission is enabled, but MBMS service reception is interfered with causing packet loss
Solution Approach 1:
The patent segments the channel allocation by introducing a dedicated R99DCH channel for MBMS service reception, separate from the HSDPA downlink shared channel. This segmentation allows the terminal to receive MBMS services on the dedicated R99DCH channel while simultaneously using the HSDPA channel for high-speed data transmission, thereby resolving the interference issue between the two services.
2Productivity
If HSDPA channel is allocated to terminal, then high-speed data transmission is enabled, but terminal battery life is reduced
Solution Approach 1:
By segmenting the reception channels into HSDPA downlink shared channel for data transmission and dedicated R99DCH channel for MBMS service, the terminal can maintain HSDPA activity for high-speed data while using the separate R99DCH channel for MBMS reception without causing excessive power consumption that would reduce battery life.
3Adaptability or versatility
If terminal supports both HSDPA and MBMS services, then service versatility is improved, but simultaneous reception of MBMS, PS, and CS services becomes difficult
Solution Approach 1:
The patent assigns the R99DCH channel specifically for MBMS service reception, creating a dedicated pathway that operates independently from the HSDPA data transmission channel. This segmentation enables terminals supporting both HSDPA and MBMS services to simultaneously receive MBMS, PS, and CS services without operational conflicts.
Solution Approach 2:
The R99DCH channel serves multiple functions by being available for both MBMS service reception and packet switch service reception, while the HSDPA channel handles data transmission. This multi-functionality arrangement allows terminals with diverse service support capabilities to operate simultaneously without interference.
Data Source
AI summary
The present invention is to enable a network to control an exemplary aspect of a terminal so as to adapt distribution of resources between a plurality of users. A method of a radio resource in a mobile communication network, including steps of: determining a ratio of terminals that desire reception of MBMS service; transmitting a signal for requesting terminals to indicate that these terminals do not support HSDPA service but support DCH service to a network in the case that the determined ratio is not more than a predetermined threshold value; and allocating a resource, which is necessary for effective simultaneous reception of MBMS service, a packet switch service (PS), and a circuit switch service (CS), to terminals.