A method for resource reuse of multiple RRUs in a 5G network

Abstract

The invention discloses a method for multiplexing multiple RRU shared cell resources in a 5G network, comprising the following steps: the BBU / host configures independent reference signal resources for the RRU / extension unit; The frequency domain position sends the reference signal; when the UE accesses the cell, the base station configures signaling information for the UE, and at the same time, the UE measures the reference signal sent by the RRU / extension unit, and uploads the measured reference signal strength and reference signal resource identifier to the base station, or uploads the signal The reference signal resource identifier with the strongest strength; the base station obtains the reference signal identifier with the strongest signal strength according to the information reported by the UE, determines the location of the RRU / extension unit coverage area where the UE is located, and constructs a topology diagram of the connection relationship between the UE and the RRU / extension unit; According to the load status of the cell, the base station multiplexes channel resources between UEs under the coverage of different RRUs / extension units to serve the UEs. The invention can increase network capacity exponentially, reduce network interference, improve energy efficiency and reduce cost.

Description

technical field [0001] The present invention relates to the technical field of 5G wireless communication, and in particular to a method for multiplexing resources of multiple RRUs in a 5G network shared cell. Background technique [0002] For decades since the birth of the wireless communication industry, the "coverage" and "capacity" of the wireless communication network have always been two core themes. The invention of the cellular network has solved these two problems well. The cellular network divides a geographical area into several small areas, and then installs a base station with moderate transmission power in each small area to achieve wireless signal coverage in the target area—this small area covered by the wireless signal of the base station can provide wireless communication services Areas are called "cells". [0003] Macro base stations will configure multiple RRUs as one cell in some special scenarios, such as high-speed rail / subway and dense urban areas wit...

AI Technical Summary

Problems solved by technology

[0005] 1) The equipment resource overhead is large: because the processing and calculation of the baseband signal is very large, creating an L1 cell for each RRU consumes a lot of equipment resources and the deployment cost is high;

[0006] 2) Extended Pi station is not applicable: This solution is usually applied in macro base station scenarios

There are a large number of RF units in the extended skin station scenario, the equipment cost of creating an L1 cell for each RF unit, and the transmission cost between the host and the RF unit are very high;

[0007] 3) SRS resource overhead is large: Since the base station and UEs are "one-to-many" communication, in order to avoid SRS signal conflicts between different UEs, each UE in the cell needs to allocate independent SRS resources, so this scheme channel The resource overhead is large, and the base station is required to support higher SRS channel demodulation specifications, which increases the cost of the base station

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