DECT ULE Base Station Dummy Bearer Scheduling
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Solution Overview
Problem
DECT ULE systems face challenges in supporting a large number of devices with varying latency requirements and limited bandwidth, necessitating flexible and efficient use of dummy bearers for paging and broadcast messages.
Innovation Solution
A method and system for dynamically determining the schedule of broadcast and paging messages, generating dummy bearers with multiple usage fields and usage indicative fields, and transmitting location information to indicate the presence of paging or broadcast messages, allowing for flexible allocation of resources and support for up to 500 devices with configurable latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If dummy bearers are used for paging and broadcast messages in DECT ULE, then communication with multiple devices is enabled, but the bandwidth is limited and cannot support a large number of devices with varying latency requirements
Solution Approach 1:
The dummy bearer structure is enhanced with multiple usage fields that can be dynamically configured to serve different purposes (paging, broadcast, or both simultaneously). This multi-functionality allows the same communication resource to adapt to varying device requirements and latency constraints, enabling support for hundreds of devices without requiring dedicated bearers for each device type.
Solution Approach 2:
The patent implements dynamic determination of transmission schedules for paging and broadcast messages based on current system conditions and device requirements. The usage indicative fields can be changed over time to allocate resources differently, providing flexibility to accommodate varying latency requirements across different device groups while operating within limited bandwidth constraints.
2Loss of time
If dummy bearers are transmitted frequently to support low latency devices, then latency is reduced, but bandwidth consumption increases
Solution Approach 1:
Different portions of the dummy bearer structure are optimized for different purposes. The usage indicative fields and multiple usage fields are strategically positioned and configured to provide low-latency paging information to devices that require it, while other portions can be used for broadcast messages or left unused, thereby reducing overall bandwidth consumption compared to transmitting full dummy bearers continuously.
Solution Approach 2:
Instead of transmitting complete dummy bearers with all possible information fields every time, the system transmits only the necessary usage indicative fields and relevant messaging content based on current needs. This partial action approach reduces bandwidth consumption while still providing timely paging information to low-latency devices when required.
3Quantity of substance
If the dummy bearer structure is extended to support more devices, then device capacity increases, but the complexity of the communication protocol increases
Solution Approach 1:
The dummy bearer structure is segmented into distinct functional fields: usage indicative fields that specify the type of message, multiple usage fields that can be independently configured, and payload sections. This segmentation allows the protocol to support hundreds of devices through systematic field configuration rather than requiring complex overall protocol changes, as each segment can be independently managed and interpreted.
Solution Approach 2:
The patent uses parameter changes within the existing dummy bearer framework - specifically modifying usage indicative field values and multiple usage field configurations - to scale device capacity. By changing these parameters rather than fundamentally altering the protocol structure, the system can accommodate hundreds of devices while maintaining relatively simple protocol processing at the device level.
Data Source
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Figure 2A~2B
Figure 2C~2E
AI summary
An ultra low energy ULE digital enhanced cordless telecommunication DECT base station (300) that includes a scheduler (310) that is arranged to dynamically determine a schedule of transmissions of broadcast messages and of paging messages to be received by DECT ULE devices (360-365); a dummy bearer generator (320) arranged to generate dummy bearers in response to the schedule; wherein each dummy bearer comprises a multiple usage field and a usage indicative field; wherein the usage field is indicative of a selected usage of the multiple usage field; wherein the selected usage purpose is selected out of at least a conveyance of a broadcast message and a conveyene of a paging message; a configuration module (330) that is arranged to generate location information indicative of a location of at least one bit allocated within at least one dummy bearer for indicating, when flagged, of a presence of a paging message or a broadcast message aimed to at least one of the DECT ULE devices (360-365); and a transmitter that is arranged to transmit to the DECT ULE devices the dummy bearers and the location information.