Uplink Access Method Using Codebook Mapping for Small Data
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Solution Overview
Problem
In wireless communications, when the volume of uplink service data sent by a terminal to a base station is small, the terminal needs to interact multiple times to generate an uplink data signal and a pilot signal, leading to resource wastage due to excessive interaction.
Innovation Solution
The terminal directly obtains a codebook from a preset codebook set, maps the uplink service data into a data modulation symbol, and generates an uplink data signal by multiplying the symbol with a carrier signal, along with generating a pilot signal corresponding to a specific pilot sequence, without needing to interact with the base station for signal generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal interacts with the base station to generate uplink data signal and pilot signal before transmission, then the base station can allocate resources and maintain synchronization, but when the volume of uplink service data is small, the interaction resources occupy more than the data transmission resources, causing resource waste
Solution Approach 1:
The terminal autonomously selects codebooks from a preset codebook set and generates uplink data signals and pilot signals without requiring base station interaction. The terminal uses local stored codebook information to independently complete signal generation, eliminating the need for resource allocation messages and reducing interaction overhead while maintaining transmission capability
Solution Approach 2:
The terminal pre-stores multiple codebooks in a preset codebook set before actual data transmission. By having codebook information readily available in advance, the terminal can immediately generate signals when data needs to be transmitted without waiting for base station allocation, thus reducing interaction delay and resource occupation
2Productivity
If the terminal interacts multiple times with the base station for small volumes of uplink service data, then resource allocation can be maintained, but the interaction process causes resource wastage
Solution Approach 1:
The terminal independently selects appropriate codebooks from its preset codebook set based on the volume of uplink service data and generates signals autonomously. This self-service mechanism eliminates multiple interaction rounds with the base station, significantly reducing interaction time and improving transmission efficiency for small data volumes
Solution Approach 2:
The terminal changes the parameter of codebook selection based on the volume of uplink service data. When data volume is small, the terminal selects codebooks designed for efficient small-data transmission, optimizing the transmission process and avoiding unnecessary interaction overhead
Data Source
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AI summary
Embodiments of the present invention provide an uplink access method, apparatus, and system, which relate to the communications field and can resolve a problem of a waste of resources that occurs because when a volume of uplink service data sent by a terminal to a base station is relatively small, the terminal needs to interact with the base station to generate an uplink data signal and a pilot signal. The uplink access method includes: acquiring uplink service data; acquiring a first codebook from a preset codebook set; acquiring, according to the first codebook and a mapping relationship between a codebook and a pilot sequence, a first pilot sequence corresponding to the first codebook; generating an uplink data signal according to the first codebook and the uplink service data; generating a pilot signal corresponding to the first pilot sequence; and sending the uplink data signal and the pilot signal to a base station. The uplink access method, apparatus, and system provided in the embodiments of the present invention are applicable to uplink access.