PUSCH Msg3 Time Resource Allocation via K2 Offset Table
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current time domain resource allocation for PUSCH transmission in NR lacks specificity for Msg3 transmission/retransmission/repetition, leading to difficulties in covering all numerologies and increasing signaling overhead in RAR/DCI.
Innovation Solution
A default time resource allocation table is predefined for normal PUSCH, with a separate K2 offset table for Msg3 to indicate timing differences, reducing signaling overhead and supporting flexible configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a unified time resource allocation table is used for all PUSCH transmissions, then the signaling overhead is reduced, but the ability to cover all numerologies and support Msg3-specific requirements is insufficient
Solution Approach 1:
The patent segments the time resource allocation mechanism into two parts: a unified default table for general PUSCH transmissions and a separate K2 offset table for Msg3-specific adjustments. This segmentation allows the system to maintain a compact default table while adding Msg3-specific support through the offset table, resolving the contradiction between reducing signaling overhead and covering all numerologies.
Solution Approach 2:
The patent applies local quality by introducing K2 offset values specifically for Msg3 transmissions while keeping the default table unchanged for other PUSCH transmissions. This localized adjustment allows Msg3 to have specialized timing requirements without affecting or complicating the general PUSCH allocation mechanism, thus maintaining low signaling overhead while achieving versatility.
2Adaptability or versatility
If separate time resource allocation tables are defined for Msg3 and normal PUSCH, then the support for various numerologies is improved, but the signaling overhead increases
Solution Approach 1:
Instead of creating completely separate tables, the patent segments the allocation mechanism into a default table and an offset table. The offset table contains only the differences (K2 values) needed for Msg3, rather than duplicating entire resource allocation tables. This reduces signaling overhead while still providing numerology-specific support.
Solution Approach 2:
The patent extracts only the essential Msg3-specific parameter (K2 offset) from the full resource allocation table. By taking out only the necessary timing adjustment values and storing them in a separate compact offset table, the system achieves Msg3 support without transmitting redundant information, thus reducing signaling overhead.
3Measurement precision
If K2 offset table is introduced for Msg3, then the timing accuracy for Msg3 transmission is improved, but the device complexity increases
Solution Approach 1:
The patent extracts only the essential timing offset information into a separate K2 offset table, rather than incorporating all timing parameters into a single complex table. This extraction simplifies the overall structure by separating Msg3-specific timing adjustments from general PUSCH allocation, making the device complexity manageable while improving timing accuracy.
Solution Approach 2:
The patent makes the time resource allocation mechanism multi-functional by designing it to serve both general PUSCH transmissions (via the default table) and Msg3-specific transmissions (via the offset table). This universal design allows a single integrated mechanism to handle multiple functions without requiring entirely separate systems, thus limiting the increase in device complexity.
Data Source
AI summary
The embodiments herein relate to time domain resource allocation for PUSCH transmission. In one embodiment, there proposes a method in a wireless communication device for Random Access (RA), comprising: transmitting a preamble on Physical Random Access Channel (PRACH); receiving a Random Access Response (RAR) message; transmitting, on Physical Uplink Shared Channel (PUSCH), a message for terminal identification (Msg3), wherein the time resource allocation of Msg3 is different than the time resource allocation of other message to be transmitted on the PUSCH (normal PUSCH). The embodiments herein can support flexible time resource allocation configuration for Msg3, and at the same time, the signaling overhead in RAR/DCI for indicating the time resource allocation of PUSCH carrying Msg3 can be reduced.