Merging SFBC and STBC Streams for Multi-User Resource Utilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face a low resource utilization rate due to the limitation of using only one user equipment in a time-frequency resource, restricting the efficiency of spectrum usage.
Innovation Solution
A data transmission method and apparatus that encodes data streams from multiple user equipment using different MIMO encoding modes, such as SFBC and STBC, and combines them using specific precodes to create a to-be-sent data stream, allowing multiple user equipment to share a time-frequency resource.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only one user equipment is scheduled in a time-frequency resource using a single MIMO transmission scheme, then transmission reliability for that user is maintained, but resource utilization rate deteriorates
Solution Approach 1:
The patent merges multiple MIMO transmission schemes (SFBC and STBC) into a single time-frequency resource by combining encoded data streams from multiple user equipments. The base station encodes data streams from different users using different MIMO schemes and then combines them through precoding, allowing simultaneous transmission to multiple users in the same resource block while maintaining the reliability benefits of each scheme.
Solution Approach 2:
The patent makes the time-frequency resource universal by enabling it to serve multiple user equipments simultaneously with different MIMO transmission requirements. The base station implements a multi-functional transmission capability where a single resource can be allocated to multiple users with different encoding schemes (SFBC for frequency diversity, STBC for time diversity), thereby improving resource utilization while maintaining transmission reliability for each user.
2Reliability
If multiple MIMO transmission schemes are used for different users in the prior art, then transmission reliability is maintained, but resource utilization rate deteriorates due to inability to share time-frequency resources
Solution Approach 1:
The patent merges multiple MIMO transmission schemes (SFBC and STBC) into a single time-frequency resource by combining encoded data streams from multiple user equipments. The base station encodes data streams from different users using different MIMO schemes and then combines them through precoding, allowing simultaneous transmission to multiple users in the same resource block while maintaining the reliability benefits of each scheme.
Solution Approach 2:
The patent makes the time-frequency resource universal by enabling it to serve multiple user equipments simultaneously with different MIMO transmission requirements. The base station implements a multi-functional transmission capability where a single resource can be allocated to multiple users with different encoding schemes (SFBC for frequency diversity, STBC for time diversity), thereby improving resource utilization while maintaining transmission reliability for each user.
Data Source
Figure 1~2
Figure 3~4
AI summary
Disclosed are a data transmission method and apparatus. The method includes: encoding a data stream of a first receive end by using a first encoding mode, to obtain a first encoded data stream (S101); encoding a data stream of a second receive end by using a second encoding mode, to obtain a second encoded data stream (S102); encoding the first encoded data stream and the second encoded data stream by using a third encoding mode, to obtain a to-be-sent data stream (S103); and sending the to-be-sent data stream to a corresponding receive end by using antennas (S104). Because in the foregoing method, the to-be-sent data stream is obtained by encoding the first encoded data stream and the second encoded data stream, the to-be-sent data stream may be sent by using a time-frequency resource, that is, more than two user equipments may be scheduled in a time-frequency resource, which effectively improves a resource utilization rate.