Uplink Resource Allocation for 5G NR and LTE Coexistence
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Solution Overview
Problem
The 5G new radio (NR) system experiences a significant difference in uplink and downlink budgets at 3.5 GHz, leading to limited uplink coverage and adverse effects on the usage experience of 5G users, especially when sharing a station address with 4G base stations.
Innovation Solution
A communication method that allows a mobile terminal to obtain a target resource for uplink communication by using a first serving frequency point of a non-new radio NR communication system, such as LTE, and a second serving frequency point of the new radio NR communication system, enabling effective uplink transmission and improving coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If 5G NR uplink transmission uses only NR frequency points, then downlink performance is improved, but uplink coverage is significantly limited
Solution Approach 1:
The patent combines NR and LTE frequency points into a unified uplink resource allocation mechanism. The base station allocates uplink resources by considering both NR serving frequency points and LTE serving frequency points, allowing the mobile terminal to transmit uplink signals on either frequency point. This merging approach enables the system to leverage the broader coverage of LTE frequency points for uplink transmission while maintaining NR downlink performance.
Solution Approach 2:
The patent creates a universal uplink resource allocation mechanism that works across multiple frequency points and communication systems. The base station can allocate uplink resources on both NR and LTE frequency points, and the mobile terminal can select the appropriate frequency point for transmission. This multi-functionality allows the same uplink allocation mechanism to serve different frequency bands and network technologies simultaneously.
2Adaptability or versatility
If 5G base station shares station address with 4G base station, then network resource utilization is improved, but continuous coverage cannot be achieved due to uplink coverage limitations
Solution Approach 1:
The patent merges the uplink resource allocation mechanisms of 5G NR and 4G LTE networks. When a base station shares its address between NR and LTE, the patent enables the base station to allocate uplink resources on both NR and LTE frequency points simultaneously. This allows mobile terminals to access the shared base station through either network technology, achieving continuous coverage while maintaining efficient resource utilization.
3Area of stationary object
If uplink transmit power of mobile terminal is increased, then uplink coverage is improved, but power consumption and energy efficiency deteriorate
Solution Approach 1:
The patent changes the frequency parameter for uplink transmission by allowing the mobile terminal to select between NR and LTE frequency points based on coverage conditions. When the terminal is in a coverage area where LTE frequency points are available, it can transmit on these lower-frequency points which have better propagation characteristics, thereby achieving adequate coverage without requiring excessive transmit power.
Data Source
AI summary
A communication method, a mobile terminal, a base station, and a computer readable storage medium are provided. The present disclosure includes: obtaining a target resource for an uplink communication in a current communication process, where a frequency point corresponding to the target resource includes a first serving frequency point of a non-new radio NR communication system, and a communication system where the mobile terminal is located is a new radio NR communication system; and communicating with a base station according to the target resource.