Concurrent Random Access Procedures for Wireless Scheduling Requests

The patent segments the Random-Access procedure management by introducing bearer-specific control mechanisms. Each radio bearer can independently trigger and manage its own RACH procedure through dedicated logical channels and MAC entities, allowing parallel access procedures for different bearers simultaneously. This segmentation resolves the contradiction by enabling multiple concurrent procedures (reducing access delay) while maintaining manageable complexity through structured bearer-specific control.

The patent introduces a new dimension of bearer identification and prioritization into the RACH procedure management. By associating each RACH procedure with specific radio bearers and logical channels, the system can differentiate and prioritize access requests across multiple dimensions (bearer type, service criticality, QoS requirements). This dimensional expansion allows critical services to obtain faster access while non-critical services can proceed asynchronously, resolving the time-delay vs. complexity contradiction.

The patent implements dynamic power allocation and resource assignment for concurrent RACH procedures. The base station receives RACH requests from multiple bearers simultaneously and dynamically determines power allocation, resource grants, and procedure prioritization based on current network conditions, QoS requirements, and service criticality. This dynamic control enables high access efficiency for critical services while optimizing overall power consumption by adjusting resources in real-time rather than allocating fixed resources to all procedures.

The patent changes key parameters such as power allocation levels, resource grant sizes, and procedure timing based on bearer priority and service type. High-priority bearers receive optimized parameter configurations that enable faster access with appropriate power levels, while lower-priority bearers receive adjusted parameters that reduce overall power consumption. This parameter adaptation resolves the contradiction between access efficiency and power usage by tailoring resource characteristics to specific service requirements.

The patent introduces the base station as an intermediary that coordinates and manages simultaneous scheduling requests from multiple bearers. Rather than allowing UEs to transmit scheduling requests independently without coordination, the base station receives prioritization information, determines appropriate transmission timing and resources, and assigns orthogonal resources to different bearers. This intermediary control reduces access latency by permitting simultaneous requests while maintaining transmission reliability through coordinated resource allocation and interference management.

The patent implements preliminary prioritization and resource assignment before simultaneous transmissions occur. The UE provides prioritization information for each bearer's scheduling request in advance, and the base station pre-determines resource allocation, power levels, and timing assignments before the actual transmissions. This preliminary action enables simultaneous transmissions to proceed with reduced latency while maintaining reliability through pre-coordinated resource distribution that prevents harmful interference.