Wireless Resource Allocation via Bitmap Signaling
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Solution Overview
Problem
Conventional techniques for managing coexisting voice and data users in wireless communication networks are inefficient in allocating unused resources for data transmission, particularly in CDMA2000 1x EVolution Data Optimized (1xEV-DO) systems, where voice traffic often leaves resources unused, leading to suboptimal network performance.
Innovation Solution
A method that groups voice and data users to share time-frequency resources efficiently, using extended bitmap signaling to allocate resources, prioritizing voice users while allowing data users to access leftover resources for transmission, and assigning data users to multiple groups to alleviate resource constraints, especially during retransmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voice users are assigned dedicated time-frequency resources, then voice transmission quality is maintained, but resource utilization efficiency deteriorates due to large inactive periods
Solution Approach 1:
The patent merges voice users and data users into the same service pool, allowing them to share the same time-frequency resources. Voice users maintain their priority access while data users can utilize leftover resources, thereby improving overall resource utilization without compromising voice quality
Solution Approach 2:
The patent creates a universal service pool that serves both voice and data traffic types. The same resource pool and scheduling mechanism handle both real-time voice traffic and non-real-time data traffic, making the system more versatile and efficient
2Productivity
If data users are added to share resources with voice users, then resource utilization efficiency improves, but system complexity increases due to multiple groups and extended bitmap signaling
Solution Approach 1:
The patent segments users into different service pools (voice-only, data-only, and mixed pools) with different priority levels. This segmentation allows the system to manage complexity through hierarchical structure while maintaining high resource utilization through the mixed pool
3Reliability
If voice traffic is prioritized over data traffic, then voice transmission reliability is maintained, but data transmission efficiency deteriorates due to limited access to unused resources
Solution Approach 1:
The patent applies different quality levels to different user types within the same resource pool. Voice users receive high-priority local quality treatment ensuring reliable transmission, while data users receive best-effort service utilizing leftover resources, thereby maintaining voice reliability while improving data efficiency
Data Source
AI summary
Methods and systems for resource allocation in a wireless communication network are disclosed. According to an embodiment, a first portion of a communication resource is allocated by an access node to a first set of access terminals for performing voice communication and a second portion of the communication resource to a second set of access terminals for performing data communication without the statistical characteristics of voice traffic, wherein the allocation is represented by a group message indicated by a first bitmap and a second bitmap, for a group comprising the first set of access terminals and the second set of access terminals, respectively. A terminal in the second set of access terminals can be in an additional group comprising a third set of access terminals configured to perform voice communication through the access node, and a fourth set of access terminals configured to perform data communication without the statistical characteristics of voice traffic.