Shared Bandwidth Common Information Transmission
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Solution Overview
Problem
In LTE systems, overlapping bandwidths used by different UEs lead to increased signaling overheads and decreased communication rates due to the need for separate transmission of common information, affecting communication performance and resource utilization.
Innovation Solution
A method where UEs determine the frequency domain location and size of a shared transmission bandwidth, allowing simultaneous transmission of common information to multiple UEs, reducing the need for separate transmissions and conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If common information is separately transmitted to each UE in overlapping bandwidths, then each UE can receive its dedicated common information, but signaling overheads increase and communication rate decreases
Solution Approach 1:
The patent merges the transmission of common information for multiple UEs by identifying and utilizing the overlapping bandwidth portion between different UE bandwidths. The base station transmits common information once in the overlapping region, which can be received by multiple UEs simultaneously, thereby combining what would otherwise be separate transmissions into a single efficient transmission.
Solution Approach 2:
The overlapping bandwidth region serves multiple functions: it acts as the system bandwidth for one UE while simultaneously serving as a portion of the system bandwidth for another UE. This multi-functionality allows the same frequency resources to be utilized by multiple UEs for receiving common information, eliminating redundant transmissions.
2Reliability
If common information is separately transmitted to each UE in overlapping bandwidths, then each UE can receive its dedicated common information, but signaling overheads increase
Solution Approach 1:
The patent merges the transmission of common information for multiple UEs by identifying and utilizing the overlapping bandwidth portion between different UE bandwidths. The base station transmits common information once in the overlapping region, which can be received by multiple UEs simultaneously, thereby combining what would otherwise be separate transmissions into a single efficient transmission.
3Reliability
If separate RAR resources are allocated in different bandwidths, then each UE can receive RAR information, but resource utilization decreases and conflicts increase
Solution Approach 1:
The patent merges the allocation of RAR resources by placing them in the overlapping bandwidth region that is common to multiple UEs. This allows multiple UEs to access RAR information from the same resource location, simplifying resource allocation management and reducing the complexity of coordinating separate RAR resources for each UE.
Data Source
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AI summary
Embodiments of the present invention relate to the communications field, and provide a common information transmission method and an apparatus, to reduce repeated sending of common information from a base station to multiple UEs during sending of the common information in the prior art, and improve utilization of resources between the base station and the UEs. The solution includes: obtaining, by UE, frequency domain location information of a first transmission bandwidth; determining, by the UE, a size and a location of the first transmission bandwidth in a bandwidth of the UE according to the frequency domain location information, where the bandwidth of the UE is one of system bandwidths; and receiving, by the UE over the first transmission bandwidth according to the size and the location of the first transmission bandwidth, common information sent by a base station.