Multi-Carrier HSDPA Control Channel Allocation Method
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional single carrier HSDPA technologies are inadequate for managing control channel allocation in multi-carrier HSDPA systems, failing to meet the complex control requirements necessary for enhanced packet data transmission.
Innovation Solution
A method for allocating control channels in multi-carrier HSDPA, where a radio network controller allocates multiple pairs of uplink and downlink control channels, with each pair corresponding to a carrier, allowing for efficient transmission of control messages and power control, and enabling multiple carriers to share the same control channel, simplifying UE monitoring and improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple pairs of uplink and downlink control channels are allocated to each carrier in multi-carrier HSDPA, then the control requirement for each carrier is satisfied, but the UE monitoring complexity and device complexity increase
Solution Approach 1:
The control channels are segmented and associated with specific carriers. Each pair of uplink and downlink control channels is dedicated to a specific carrier, allowing the UE to monitor control channels on a per-carrier basis rather than all carriers simultaneously. This segmentation reduces the overall monitoring complexity while still satisfying the control requirements for each carrier.
Solution Approach 2:
A single pair of uplink and downlink control channels can serve multiple carriers universally. The control messages transmitted on these channels can contain information pertaining to multiple carriers, allowing one control channel pair to perform the function of controlling multiple carriers, thereby reducing UE monitoring burden.
2Ease of operation
If one pair of control channels transmits control messages for all carriers, then the UE monitoring is simplified, but the control precision and adaptability for each specific carrier deteriorates
Solution Approach 1:
Different parts of the control message structure are designed with different qualities. Some control messages contain carrier-specific information with high precision for individual carriers, while other messages provide overall multi-carrier coordination. This local differentiation allows the system to maintain both simplicity for the UE and precision for carrier-specific control.
Solution Approach 2:
The control channel allocation is dynamic and adaptable. The system can switch between different modes: sometimes using one control channel pair for all carriers when simplicity is prioritized, and other times using separate control channel pairs for specific carriers when precision is required. This dynamic approach allows the system to adapt to different operational requirements.
Data Source
AI summary
The present invention discloses a control channel allocation method, a packet data transmission method and a RNC of a multi-carrier HSDPA (high speed downlink packet access) technology, wherein the allocation method includes: when a UE accesses a network, the network allocating K pairs of uplink and downlink control channels to be monitored by the UE; during a HSDPA service transmission process, the network selecting N pairs from the K pairs of uplink and downlink control channels to transmit control messages, wherein the selected downlink channels are the corresponding uplink channels are on a same carrier; and the network allocating a pair of uplink and downlink associate channels on each carrier where the selected N pairs of uplink and downlink control channels locate, wherein M≥N≥1 and M is a number of carriers used by the network to transmit packet data. The present invention effectively solves the problem that in the traditional single carrier HSDPA, only the transmission control of the single carrier is taken into account and the control requirement in the multi-carrier HSDPA cannot be satisfied.