Group-Based Subscription Activation for Unidirectional Channels
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Solution Overview
Problem
Existing subscription broadcast mechanisms over unidirectional transmission channels, such as satellite radio, face significant bandwidth issues due to the need to broadcast activation and reactivation codes to all receivers, even if not intended for them, leading to inefficient use of bandwidth and scalability problems as the number of receivers increases.
Innovation Solution
Assigning group identifiers to devices for service subscriptions, allowing activation and reactivation messages to be broadcast efficiently, with a single message capable of activating or reactivating multiple devices by including their group identifiers, reducing the number of messages required on the unidirectional transmission channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If activation codes and reactivation codes are broadcast to all receivers in a unidirectional transmission channel, then all receivers can receive the codes, but the bandwidth required increases significantly as the number of receivers increases
Solution Approach 1:
The patent segments receivers into different groups based on their subscription status (activated, inactive, expired). Instead of broadcasting to all receivers uniformly, the system segments the address space and targets only relevant groups with specific codes, thereby reducing overall bandwidth consumption while maintaining reliable code delivery to intended receivers.
Solution Approach 2:
The patent applies local quality by treating different receiver groups differently in the broadcasting process. Activated receivers receive activation codes, inactive receivers receive reactivation codes, and expired receivers receive renewal codes. This localized targeting ensures that bandwidth is consumed only where necessary, rather than uniformly across all receivers.
2Ease of operation
If separate activation and reactivation messages are broadcast to each receiver individually, then each receiver receives its specific code, but the number of messages transmitted increases with the number of receivers
Solution Approach 1:
The patent merges multiple individual code transmissions into single group-based broadcasts. By combining activation codes, reactivation codes, and renewal codes into unified broadcast messages targeted at specific receiver groups, the system maintains individual code assignment accuracy while dramatically improving message transmission efficiency and reducing the total number of messages required.
Solution Approach 2:
The patent creates universal broadcast messages that can serve multiple functions simultaneously. A single broadcast message can deliver activation codes to activated receivers, reactivation codes to inactive receivers, and renewal codes to expired receivers all at once. This multi-functionality approach eliminates the need for separate individual messages while maintaining precise code delivery to each receiver type.
3Adaptability or versatility
If reactivation codes are broadcast to all receivers regardless of target, then all receivers can potentially receive reactivation codes, but bandwidth is wasted on receivers not needing reactivation
Solution Approach 1:
The patent implements self-service by enabling receivers to autonomously determine their own group classification based on their subscription status. Each receiver can identify whether it is activated, inactive, or expired and accordingly receive the appropriate code type. This self-service mechanism eliminates the need for the system to waste bandwidth broadcasting reactivation codes to all receivers, as each receiver selectively processes only the codes relevant to its state.
Data Source
AI summary
Methods, apparatus, and products for managing service subscriptions of a plurality of devices over a unidirectional transmission channel, including: assigning, by a subscription management module, one or more group identifiers to a device to be activated for a service subscription, each group identifier being an identification of a group of devices having an activated subscription to the service; activating, by the subscription management module, the device's service subscription including broadcasting an activation message that includes a unique identifier of the device, the assigned group identifiers, and an active subscription period being a period of time during which the device's subscription to the service is to be active; and prior to expiration of the active subscription period, broadcasting a reactivation message including at least one of the group identifiers to which the device is assigned.