Combinatorial Index for Discontinuous Uplink Resource Allocation
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in resource allocation for uplink signal transmission, particularly in discontinuous resource allocation methods that increase control information requirements and reduce scheduling freedom.
Innovation Solution
A method utilizing a combinatorial index to indicate two resource block sets, each comprising one or more continuous resource block groups, is implemented for efficient discontinuous uplink resource allocation, allowing for flexible resource allocation without increasing control information overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If discontinuous resource allocation is implemented for uplink signal transmission, then resource utilization efficiency is improved, but control information overhead increases
Solution Approach 1:
The patent combines multiple resource allocation indicators into a single combinatorial index r. Instead of separately indicating multiple resource block sets, the system uses one combinatorial index that encodes information about two resource block sets (first RB set with starting RBG index s0 and ending RBG index s1, second RB set with starting RBG index s2 and ending RBG index s3). This merging reduces the number of control information bits while maintaining the ability to indicate discontinuous resource allocation, thus improving resource utilization efficiency without increasing control information overhead.
2Adaptability or versatility
If detailed resource allocation information is provided for multiple resource block sets, then scheduling flexibility is improved, but device complexity increases
Solution Approach 1:
The patent changes the parameter representation from multiple separate indicators to a single combinatorial index parameter r. The combinatorial index is calculated using the formula r = (s1 - s0) × (N - s2) + (s3 - s2), where N is the total number of resource block groups. This parameter transformation allows the system to maintain scheduling flexibility (ability to indicate multiple resource block sets with different starting and ending positions) while reducing DCI format complexity by encoding all allocation information in a single index value that can be transmitted with fewer bits.
Data Source
AI summary
A method is presented for a communication apparatus to transmit an uplink signal in a wireless communication system. The communication apparatus receives a control channel signal including resource allocation information indicating a plurality of non-consecutive resource sets, each of the resource sets including a single resource block group (RBG) or at least two consecutive RBGs. The communication apparatus transmits the uplink signal using the RBGs of the plurality of non-consecutive resource sets indicated by the resource allocation information of the control channel signal. The resource allocation information uses a combinatorial index corresponding to at least four different indices, s0, s1, s2 and s3, to indicate the two or more non-consecutive resource sets, whereby s0 and s1−1 indicate a starting RBG and an ending RBG, respectively, of a first resource set, or s2 and s3−1 indicate a starting RBG and an ending RBG, respectively, of a second resource set.