PUCCH Control Information Transmission via Antenna Port Segmentation
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting control information, particularly in allocating resources for control information transmission through physical uplink control channels (PUCCH) using multiple antenna ports, which affects the overall performance and capacity of carrier aggregation systems.
Innovation Solution
A method and apparatus for efficiently transmitting control information through a PUCCH using first and second antenna ports, employing specific channel formats and signal processing techniques to optimize resource allocation and channel utilization in wireless communication systems, including channel coding, modulation, and spreading methods tailored for SC-FDMA and OFDMA schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information is transmitted through multiple antenna ports using conventional methods, then transmission diversity is achieved, but resource allocation efficiency deteriorates
Solution Approach 1:
The control information transmission is segmented across multiple antenna ports (first and second antenna ports), where each antenna port transmits a portion of the control information using dedicated orthogonal cover codes. This segmentation enables transmission diversity while the patent optimizes resource allocation by efficiently managing the orthogonal resources assigned to each antenna port, thus resolving the contradiction between reliability and resource efficiency.
Solution Approach 2:
The patent introduces a new dimension for resource allocation by utilizing orthogonal cover codes in the time-domain across multiple antenna ports. Instead of allocating additional frequency or time resources, the invention exploits the orthogonal dimension of cover codes to achieve diverse transmission paths, thereby improving reliability without sacrificing resource allocation efficiency.
2Reliability
If orthogonal cover codes are used for spreading control information across multiple antenna ports, then transmission diversity is improved, but system complexity increases
Solution Approach 1:
The patent employs orthogonal cover codes with specific parameters (different code lengths and structures for different antenna ports) to achieve transmission diversity. By carefully selecting and configuring these orthogonal codes, the system achieves reliable diverse transmission while maintaining manageable processing complexity through standardized code selection and application procedures.
3Quantity of substance
If resources are allocated for control information transmission through multiple antenna ports, then transmission capacity is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent enables the same orthogonal cover code resources to serve multiple antenna ports simultaneously for control information transmission. This multi-functional use of orthogonal resources allows the system to increase transmission capacity across multiple antennas without proportionally increasing the total resource consumption, as the orthogonal structure allows efficient multiplexing.
Data Source
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AI summary
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for transmitting control information through a PUCCH in a wireless communication system and an apparatus for same comprising the steps of: obtaining a plurality of second modulation symbol streams corresponding to a plurality of SC-FDMA(Single Carrier Frequency Division Multiplexing) symbols by diffusing a plurality of first modulation symbol streams to form the first modulation symbol streams corresponding to the SC-FDMA symbols within a first slot; obtaining a plurality of complex symbol streams by performing a DFT(Discrete Fourier Transform) pre-coding process for the plurality of second modulation symbol streams; and transmitting the plurality of complex symbol streams through the PUCCH wherein the plurality of second modulation symbol streams are scrambled in a SC-FDMA symbol level.