Preemptive Bandwidth Allocation in Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In conventional wideband wireless communication systems, data transmission delays occur due to the contention-based bandwidth request process, where terminals may not acquire a CDMA allocation IE in time, leading to delayed data transmission.
Innovation Solution
A method and apparatus for allocating a preemptive grant bandwidth within residual bandwidth to a terminal before it requests bandwidth, using a preemptive grant determiner, terminal determiner, and scheduler to efficiently allocate bandwidth and reduce processing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal performs bandwidth request through contention-based process, then the terminal can request bandwidth when needed, but data transmission delay occurs when the terminal fails to acquire CDMA allocation IE in time
Solution Approach 1:
The base station performs preliminary bandwidth allocation by allocating preemptive grant bandwidth to terminals before they actually need to transmit data. This advance allocation eliminates the need for contention-based bandwidth request processes, ensuring terminals have immediate access to bandwidth when data transmission is needed, thus reducing delay while maintaining reliability
Solution Approach 2:
The system preemptively allocates bandwidth resources to terminals before contention scenarios can occur. By assigning preemptive grant bandwidth in advance based on terminal priorities and traffic patterns, the system prevents the harmful effect of bandwidth acquisition failure and subsequent transmission delays before they happen
2Productivity
If the base station allocates bandwidth based on bandwidth requests, then bandwidth is allocated according to actual need, but processing time for bandwidth request and grant process increases
Solution Approach 1:
The base station performs preliminary bandwidth allocation by assigning preemptive grant bandwidth to terminals in advance of actual data transmission needs. This eliminates the sequential bandwidth request-grant processing steps, reducing processing time while maintaining efficient bandwidth utilization through priority-based pre-allocation
3Productivity
If the base station allocates preemptive grant bandwidth using residual bandwidth, then bandwidth utilization is improved, but complexity of bandwidth allocation process increases
Solution Approach 1:
The base station automatically manages preemptive grant bandwidth allocation by utilizing residual bandwidth resources. The system self-adjusts the allocation based on available residual bandwidth and terminal priorities without requiring complex manual configuration or additional signaling protocols, thereby improving bandwidth utilization while keeping the allocation process relatively simple
Data Source
AI summary
The present invention relates to a method and to an apparatus for allocating a bandwidth in a wideband wireless communication system. Said method comprises: allocating a bandwidth to an uplink burst area in accordance with the bandwidth request received from at least one terminal; determining whether a preemptive grant bandwidth allocation is enabled or not; determining a preemptive grant terminal if the preemptive grant bandwidth allocation is enabled; and allocating a preemptive grant bandwidth within a residual bandwidth to the determined preemptive grant terminal. By doing this, the present invention can efficiently use the bandwidth of an uplink frame, and shorten the time taken for bandwidth request/approval between a terminal and a base station.