Repeater Time Slot Configuration for Reliable TDD Forwarding
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Solution Overview
Problem
Existing technologies lack a solution for configuring time slots for repeaters serving base stations, particularly in areas with poor communication coverage, leading to inefficiencies and potential communication failures.
Innovation Solution
A method and apparatus for configuring time slots for repeaters by obtaining tdd-UL-DL-Configuration information from base stations, including SIBs and MAC-CEs, and determining appropriate transmitting/receiving modes for uplink, downlink, or flexible time slots, with mechanisms for acknowledgement and flexible time slot extension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If repeaters forward uplink and downlink data according to time slot information in related art, then communication coverage is extended to dead zones, but time slot configuration for repeaters is missing causing communication failures
Solution Approach 1:
The base station performs preliminary action by determining the time slot transmitting/receiving mode for the repeater and configuring time slot information (tdd-UL-DL-Configuration) before the repeater forwards data. This ensures the repeater has proper configuration in advance, preventing communication failures while extending coverage to dead zones.
Solution Approach 2:
The repeater sends feedback information (ACK/NACK) to the base station regarding the received time slot configuration. The base station uses this feedback to determine whether to resend the configuration, ensuring reliable configuration delivery and enabling the repeater to reliably forward data in extended coverage areas.
2Adaptability or versatility
If repeaters frequently read scheduling information to configure time slots, then time slot configuration can be updated, but communication efficiency decreases due to frequent reading operations
Solution Approach 1:
Instead of frequent continuous reading, the system uses periodic action where the base station sends time slot configuration information at specific intervals using scheduled messages (SIB1, MAC-CE, or DCI). The repeater reads configuration periodically rather than continuously, maintaining adaptability while improving communication efficiency by reducing frequent reading operations.
3Adaptability or versatility
If base station sends time slot configuration through SIB1, then all repeaters can receive configuration information, but configuration information size increases and transmission overhead increases
Solution Approach 1:
The system segments configuration information delivery into multiple options: broadcast through SIB1 for all repeaters, group-specific through MAC-CE for subsets of repeaters, or individual through DCI for specific repeaters. This segmentation allows flexible selection of information delivery method, providing broadcast capability when needed while reducing overall information size and transmission overhead by using more targeted methods when appropriate.
4Adaptability or versatility
If flexible time slots are configured for repeater forwarding, then data transmission flexibility is improved, but configuration complexity increases
Solution Approach 1:
The system changes parameters of existing time slot structures to create flexible time slots for repeater forwarding. By modifying parameters such as slot format indicators and time slot allocation patterns in the tdd-UL-DL-Configuration, the system achieves data transmission flexibility without requiring fundamentally new configuration structures, thus limiting the increase in configuration complexity.
Data Source
AI summary
The present disclosure provides a time slot configuration method, an apparatus, a repeater, a base station and a storage medium, in which time slot configuration information of the base station and a time slot processing mode for the repeater are obtained (S201); and a time slot for the repeater is configured according to the time slot configuration information and the time slot processing mode (S202). Through this solution, uplink and downlink time slots can be configured for a repeater while avoiding the repeater from frequently reading scheduling information. In addition, a situation where a terminal or the base station cannot effectively send or receive data due to wrong time slot configuration for the repeater can be prevented, thereby ensuring normal communication.