Multicast Channel Scheduling with Receiver Capability Feedback
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Solution Overview
Problem
Current wireless communication systems, particularly in LTE technology, lack an efficient method for integrating transmission rate selection and channel scheduling for multicast and broadcast traffic, leading to suboptimal data transmission and resource allocation.
Innovation Solution
The integration of transmission rate selection with the channel scheduling process for multicast and broadcast traffic, where the sender indicates the intended transmission rate prior to or during channel scheduling, allowing only capable receivers to respond and ensuring data is transmitted at rates achievable by the receiver, thereby optimizing channel resource allocation and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If transmission rate selection and channel scheduling are performed separately, then the system complexity is reduced and ease of operation is improved, but data transmission efficiency deteriorates and resource allocation becomes suboptimal
Solution Approach 1:
The patent combines transmission rate selection and channel scheduling into a unified integrated process. The base station jointly determines both the transmission rate and channel allocation for multicast/broadcast services in a single scheduling decision, rather than treating them as separate independent processes. This integration optimizes overall system performance by coordinating rate and resource allocation simultaneously.
Solution Approach 2:
The patent implements preliminary rate selection based on receiver capabilities before final channel scheduling. The base station first identifies capable receivers for different transmission rates, then uses this information to make informed channel allocation decisions. This preliminary assessment of receiver capabilities guides the subsequent scheduling process to achieve optimal resource utilization.
2Speed
If higher transmission rates are used for multicast/broadcast data, then data transmission speed is improved, but the number of capable receivers decreases and reliability deteriorates
Solution Approach 1:
The patent applies different transmission rates to different groups of receivers based on their individual capabilities. Instead of using a single uniform rate for all receivers, the system assigns higher rates to receivers with better channel conditions and lower rates to those with poorer conditions. This localized rate adaptation ensures each receiver operates at its optimal performance point.
Solution Approach 2:
The patent implements dynamic transmission rate selection that adapts to changing receiver capabilities and channel conditions. The base station continuously assesses receiver capabilities and adjusts transmission rates accordingly, allowing the system to optimize performance as conditions change over time rather than using static rate assignments.
3Device complexity
If channel resources are allocated without considering transmission rate capability, then resource allocation simplicity is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent incorporates feedback mechanisms where receivers report their capabilities and channel conditions to the base station. This feedback information is used to inform rate selection and channel scheduling decisions, creating a closed-loop system that continuously optimizes resource allocation based on actual system state rather than using open-loop simplified allocation.
Solution Approach 2:
The patent changes multiple parameters simultaneously (transmission rate, channel allocation, power distribution) in a coordinated manner to optimize resource utilization. Rather than adjusting single parameters independently, the system modifies multiple parameters together based on receiver capabilities and channel conditions, achieving superior resource efficiency.
Data Source
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AI summary
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives indication of a transmission scheme for decoding multicast/broadcast data transmitted from a sender, receives a reservation signal for the multicast/broadcast data from the sender, determines whether the receiver is capable of decoding the multicast/broadcast data at the indicated transmission scheme, and transmits a confirmation signal for the multicast/broadcast data to the sender after determining that the receiver is capable of decoding the multicast/broadcast data at the indicated transmission scheme. The apparatus receives the multicast/broadcast data according to the transmission scheme after the confirmation signal is transmitted. Alternatively, the apparatus suppresses transmission of the confirmation signal when it is determined that the receiver is not capable of decoding the multicast/broadcast data at the indicated transmission scheme.