Base Station Scheduling Request Index Broadcast for Uplink Resource Allocation
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Solution Overview
Problem
Current mobile communication systems face inefficiencies in managing uplink resources, particularly for small payload transmissions, due to high signaling overhead and the need for full scheduling grants, which is exacerbated by the increasing number of devices in Massive Machine-to-Machine (MMC) communication scenarios.
Innovation Solution
The system introduces a method where a base station transceiver determines and broadcasts a list of scheduling request indices to mobile transceivers, allowing them to identify granted uplink resources based on their position in the list, reducing the need for individual grants and signaling overhead, and enabling flexible resource allocation and prioritization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual scheduling grants are sent to each mobile transceiver, then resource allocation accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent merges individual scheduling grants into a single group grant message that contains a list of request indices. Instead of sending separate grants to each mobile transceiver, the base station combines multiple grant decisions into one broadcast message, reducing signaling overhead while maintaining accurate resource allocation through the index-based identification mechanism.
Solution Approach 2:
The patent uses request indices as references or copies that point to specific mobile transceivers and their scheduling requests. Rather than transmitting full grant information for each device, the system transmits compact index values that mobile transceivers can use to identify their granted resources, reducing the amount of signaling data while preserving allocation accuracy.
2Adaptability or versatility
If full scheduling grants are used for small payload transmissions, then resource allocation flexibility is improved, but transmission efficiency deteriorates
Solution Approach 1:
The patent extracts only the essential information needed for small payload transmissions by using request indices instead of full scheduling grants. The index points to the specific mobile transceiver and its scheduling request, allowing the system to maintain resource allocation flexibility while eliminating redundant information that would reduce transmission efficiency for small payloads.
Solution Approach 2:
The patent changes the parameter representation from full grant messages to compact index values. By representing resource allocation decisions as indices into a list of scheduling requests, the system maintains the ability to flexibly allocate resources while significantly reducing the size of control messages, thereby improving transmission efficiency for small payloads.
3Quantity of substance
If more uplink resources are allocated to accommodate increasing devices, then system capacity is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic resource allocation where the base station maintains a list of scheduling requests from multiple mobile transceivers and grants uplink resources based on current system conditions and device needs. This dynamic approach allows the system to accommodate increasing numbers of devices while efficiently utilizing available resources by allocating them only when needed, rather than reserving resources statically.
Solution Approach 2:
The patent uses scheduling requests as preliminary indications from mobile transceivers that they need uplink resources. The base station processes these requests and grants resources in advance of actual data transmission, allowing efficient resource allocation for multiple devices without over-provisioning. The request-based mechanism ensures resources are allocated based on actual demand while maintaining system capacity for growing device numbers.
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AI summary
Embodiments relate to apparatuses (10; 20), methods and computer programs suitable for base station transceivers and mobile transceivers in a mobile communication system (300). The apparatus (10) is suitable for a base station transceiver (100) in a mobile communication system (300) further comprising at least one mobile transceiver (200). The apparatus (10) comprises a transceiver module (12) to communicate with the at least one mobile transceiver (200) using at least an uplink channel (310) and a downlink broadcast channel (320). The uplink channel (310) comprises a plurality of uplink resources. The apparatus (10) further comprises a control module 14 configured to control the transceiver module (12). The control module (14) is further configured to receive information related to a scheduling request (210) from the mobile transceiver (200), determine information related to a request index based on the information related to the scheduling request (210), determine information related to granted resources (120) from the plurality of uplink resources comprising the information related to the request index, and transmit the information related to the granted resources (120) to the at least one mobile transceiver (200) via the downlink broadcast channel (320) in response to the information related to the scheduling request (210). The request index is associated with an uplink resource of the plurality of uplink resources.