PPDU Group Identification for Low-Power MD-A-MPDU Reception
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Solution Overview
Problem
In wireless local area network communication systems, the high power consumption of receiving communication apparatuses is a result of needing to parse multi-destination aggregated MPDUs due to varying receiving addresses, which is unfavorable for energy saving.
Innovation Solution
The introduction of identification information in the PPDU allows the receiving communication apparatus to determine whether to parse the MD-A-MPDU based on the destination communication apparatus group, enabling it to stop receiving if not associated, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the receiving communication apparatus reads each MPDU in the MD-A-MPDU to identify whether it is sent to the receiving communication apparatus, then the receiving communication apparatus can accurately determine whether to process the data, but the power consumption of the receiving communication apparatus increases
Solution Approach 1:
The patent applies preliminary action by placing identification information (such as destination address or group ID) at the beginning of the PPDU or A-MPDU structure. This allows the receiving communication apparatus to check the identification information first and determine whether to continue processing before reading the entire MD-A-MPDU content. If the identification information does not match, the device can stop processing early, avoiding the energy consumption of reading all MPDUs while maintaining accurate identification capability.
2Reliability
If the receiving communication apparatus parses the entire MD-A-MPDU to ensure no relevant data is missed, then the data reception completeness is improved, but the energy consumption and processing time increase
Solution Approach 1:
The patent segments the data transmission structure into distinct parts: identification information (destination address, group ID, or indicator field) separated from the actual MPDU payload. This segmentation allows the receiving device to independently evaluate the identification portion first and make a go/no-go decision before investing energy in processing the full payload, thus maintaining reliability for relevant data while reducing energy consumption for irrelevant transmissions.
Solution Approach 2:
The receiving communication apparatus performs preliminary checking of identification information (destination address matching, group ID verification, or indicator field evaluation) before processing the complete MD-A-MPDU. This preliminary action enables early termination of processing for non-relevant data while ensuring thorough processing of relevant data, thereby balancing data reception completeness with energy conservation.
3Speed
If the receiving communication apparatus continuously monitors and parses all incoming MD-A-MPDUs, then the responsiveness to relevant data is improved, but the power consumption increases
Solution Approach 1:
The patent enables rapid preliminary evaluation of identification information (destination address, group ID, or indicator field) at the start of each PPDU or A-MPDU reception. This preliminary action allows the receiving communication apparatus to quickly determine relevance and either immediately process the data (maintaining responsiveness) or quickly discard it (saving energy), thus achieving high responsiveness to relevant data while minimizing power consumption for irrelevant transmissions.
Data Source
AI summary
A communication method and apparatus are disclosed, and relate to the field of communication technologies, so that when receiving a multi-destination aggregated medium access control protocol data unit MD-A-MPDU, a receiving communication apparatus can quickly determine whether the receiving communication apparatus needs to parse the MD-A-MPDU, and if the receiving communication apparatus does not need to parse the MD-A-MPDU, the receiving communication apparatus may, in advance, stop receiving, to reduce power consumption, and help the receiving communication apparatus save energy. The method may include: A first communication apparatus receives a physical layer protocol data unit PPDU from a second communication apparatus. The PPDU includes first identification information and an MD-A-MPDU, the first identification information indicates a destination communication apparatus group associated with the MD-A-MPDU, and a number of bits occupied by the first identification information is 11. The first communication apparatus parses the PPDU.