Beam RSRP Differential Reporting for Lower Signaling Overhead
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Solution Overview
Problem
Existing methods for reporting Reference Signal Received Power (RSRP) values in beam management require significant overheads, as they involve differentiating RSRP values, which still leads to inefficient use of communication resources.
Innovation Solution
Implement a data transmission method that uses differential calculation of RSRP values based on a reference RSRP value, reducing the need to report the reference RSRP value each time, and instead uses differential RSRP sets to minimize overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If RSRP values are reported using differential calculation based on a reference RSRP value, then overheads for reporting are reduced, but the complexity of the reporting mechanism increases
Solution Approach 1:
The patent transforms the reporting mechanism by changing the parameter representation from absolute RSRP values to differential values relative to a reference RSRP value. This parameter transformation reduces the number of bits required for reporting while maintaining the essential information needed for beam management decisions.
Solution Approach 2:
The patent extracts the reference RSRP value as a separate entity that is reported less frequently (e.g., once per beam sweeping cycle), while only the differential values relative to this reference are reported in subsequent measurements. This extraction reduces redundant reporting of the reference value.
2Reliability
If beam sweeping is performed to establish communication connections, then reliable beam pairing is achieved, but time consumption and overheads increase
Solution Approach 1:
The patent performs preliminary beam sweeping to establish a reference RSRP value and identify the best beam pair in advance. Subsequent reports only need to provide differential values relative to this pre-established reference, reducing the time and overhead for continuous reporting while maintaining reliable beam pairing.
3Loss of information
If all RSRP values are reported in full, then complete information is provided, but communication overheads are excessive
Solution Approach 1:
The patent changes the parameter representation from full RSRP values to differential values, where each reported value represents the difference from a reference RSRP value. This transformation maintains the information needed for beam management decisions while significantly reducing the number of bits required for transmission.
Solution Approach 2:
Instead of reporting all RSRP values in full, the patent reports only the necessary differential information relative to a reference value. This partial reporting approach provides sufficient information for beam management while avoiding the excessive overhead of complete RSRP value reporting.
Data Source
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AI summary
A data transmission method and an electronic device are provided, and relate to the field of communication technologies, to reduce overheads consumed by a first device to report an RSRP value to a second device. The method is applied to the first device, and includes: obtaining a first reference signal received power RSRP set through a first time of beam sweeping; reporting a first reference RSRP value, where the first reference RSRP value is determined from the first RSRP set; obtaining a second RSRP set through a second time of beam sweeping; and reporting a first differential RSRP set based on the second RSRP set and the first reference RSRP value, where the first differential RSRP set is obtained by performing differential calculation on an RSRP value in the second RSRP set and the first reference RSRP value.