PUR Resource Configuration for Flexible Idle-Mode Uplink Timing
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Solution Overview
Problem
Existing PUR resource configuration methods face challenges in determining the starting time without DCI activation, insufficient duration, and inadequate interval lengths for eMTC and NBIoT in IDLE mode, which are not aligned with the varying traffic patterns.
Innovation Solution
The starting time of PUR resources is determined using connection release signaling, uplink data transmission/retransmission timers, PUR configuration reception, and additional time offsets to ensure alignment and flexibility, with configurable intervals and durations to support longer periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If SPS resource configuration method is used for PUR resource configuration, then the resource allocation follows a standardized procedure, but the starting time definition becomes unclear without DCI activation timing
Solution Approach 1:
The patent applies preliminary action by pre-defining the starting time of PUR resources based on connection release signaling reception time or PUR configuration reception time, rather than relying on DCI activation timing. This allows the UE to determine the starting time in advance when transitioning to IDLE mode, eliminating the ambiguity that would otherwise exist without DCI activation.
2Adaptability or versatility
If SPS resource duration is set to one subframe, then the configuration aligns with standard SPS parameters, but the duration is insufficient for eMTC and NBIoT requirements
Solution Approach 1:
The patent applies dynamics by making the PUR resource duration configurable rather than fixed at one subframe. The duration can be adapted to match eMTC and NBIoT requirements, allowing it to extend across multiple subframes or even multiple radio frames depending on the specific traffic patterns and service requirements of these IoT technologies.
3Ease of manufacture
If SPS resources interval is kept short, then the resource allocation follows standard intervals, but the interval is too short for eMTC and NBIoT traffic patterns in IDLE mode
Solution Approach 1:
The patent applies parameter changes by making the PUR resource interval a configurable parameter that can be extended beyond standard SPS intervals. The interval can be set to match the longer periodicity required by eMTC and NBIoT traffic patterns, such as every 100 ms or even every 10 hours, rather than being constrained to standard subframe-based intervals.
4Device complexity
If PUR resources are configured without flexible time offsets, then the configuration is simpler, but the alignment with varying traffic patterns is reduced
Solution Approach 1:
The patent applies dynamics by introducing configurable time offsets that allow the PUR resource timing to be dynamically adjusted to match varying traffic patterns. These offsets can be configured to align PUR resources with specific traffic bursts or periodicities, providing flexibility without significantly increasing configuration complexity.
Data Source
AI summary
Methods and apparatuses for resource configuration are disclosed. In one embodiment, a method at a remote unit comprises: receiving a preconfigured uplink resource (PUR) configuration; and transmitting uplink data in a frequency-time resource starting from a starting time, wherein the starting time is determined based on at least one of: (1) a connection release signaling reception time; (2) a first time offset for data processing; (3) an uplink data transmission time; (4) an uplink data retransmission timer; (5) a PUR configuration reception time; (6) a second time offset for scheduling flexibility; (7) a third time offset to a predetermined reference time; and (8) a length of time durations for PUR interval.