Downlink Control Information Multiplexing on Shared Channels
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Solution Overview
Problem
In packet-based cellular systems, there is a need to effectively form and transmit uplink signaling messages from a base station to a terminal while minimizing the occupation of limited radio resources.
Innovation Solution
A method for transmitting and receiving downlink control information involves generating downlink data generation indication information, recording radio resource allocation information in downlink scheduling information, and allocating this information to downlink-shared radio resources for transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If downlink control information is transmitted using dedicated control channels in packet-based cellular systems, then control information can be reliably delivered to terminals, but radio resource occupation increases and resource utilization efficiency decreases
Solution Approach 1:
The patent combines downlink control information transmission with downlink data transmission by multiplexing control information onto downlink shared data channels. Instead of using separate dedicated control channels, the control information is merged with data transmissions, allowing simultaneous delivery of both control and data over the same physical channel, thereby reducing overall radio resource occupation while maintaining reliable control information delivery
Solution Approach 2:
The patent enables downlink shared channels to serve dual purposes: transmitting both user data and control information. By making the downlink shared channel universal for both data and control purposes, the system eliminates the need for separate dedicated control channels, improving radio resource utilization efficiency while ensuring control information reaches terminals reliably
2Ease of operation
If more radio resources are allocated for transmitting control information to multiple terminals, then control information can be transmitted to all terminals, but the usability and efficiency of limited radio resources decreases
Solution Approach 1:
The patent segments control information into terminal-specific portions and transmits them selectively to individual terminals or terminal groups based on their specific needs and channel conditions. Instead of transmitting identical control information to all terminals using dedicated channels, the system divides control information segments and allocates them efficiently, improving resource utilization while maintaining comprehensive control coverage
Solution Approach 2:
The patent implements dynamic allocation of downlink shared channel resources for control information transmission, adapting the amount and distribution of control information based on real-time terminal conditions, traffic patterns, and channel quality. This dynamic approach allows the system to optimize radio resource usage continuously, ensuring control information reaches all necessary terminals while maximizing overall resource efficiency
Data Source
AI summary
Provided is a downlink control information transmitting and receiving method which can maximize the use of limited radio resources by effectively forming an uplink signaling message to be transmitted from a base station to a terminal and transmitting the formed uplink signaling message with a minimum amount of radio resources occupied. The method for transmitting downlink data generation indication information for a base station to inform a terminal of packet data transmission in a packet-based cellular system, includes the steps of: a) generating the downlink data generation indication information; b) recording radio resource allocation information in downlink scheduling information for transmitting the downlink data generation indication information, and allocating information for the downlink data generation indication information to downlink-shared radio resources; and c) transmitting the downlink scheduling information and the information for the downlink data generation indication information according to a transmission cycle.