gNB-DU Resource Coordination for Inter-Cell Spectrum Sharing
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Solution Overview
Problem
The existing 3GPP specifications do not allow the gNB-DU to initiate resource coordination properly, lacking necessary information such as group and cell identifications for effective coordination with other network devices.
Innovation Solution
A method and network device enabling the gNB-DU to initiate resource coordination by transmitting a request and receiving a response through modified gNB-DU resource coordination messages, including group and cell identifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a user equipment performs random access to a cell, then the access process may be blocked by a barring mechanism, but this blocking mechanism increases network access control capability
Solution Approach 1:
The network device performs preliminary action by sending barring configuration information to the user equipment before the random access attempt. The user equipment then uses this pre-configured information to determine whether to perform the random access, avoiding the blocking delay by making the decision in advance based on the barring configuration received previously.
2Measurement precision
If the network device sends detailed barring configuration information, then the access control precision is improved, but the signaling overhead increases
Solution Approach 1:
The barring configuration information is made locally adaptable by allowing different user equipment to receive different configuration parameters based on their specific access scenarios. The configuration includes flexible parameters such as barring factors, timing windows, and access priorities that can be locally optimized for different user types, services, or network conditions, achieving precise control without requiring exhaustive signaling for every possible scenario.
Data Source
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AI summary
According to an embodiment of the present disclosure, a method (400) in a Distributed Unit, DU, of a network device is provided. The method (400) includes: transmitting (410), to a Central Unit, CU, of the network device, a first message containing a request for resource coordination with another network device; and receiving (420), from the CU, a second message containing a response to the request from the other network device.