Network sharing agreements, designed to save cost and accelerate network roll-outs, have become commonplace in passive networks and are starting to become more acceptable to operators in the active RAN, where allowed by regulators. Deals are often driven initially by the need to reduce the cost of covering rural or remote communities, but may also be sparked when one operator has access to a unique and valuable piece of spectrum. In the case of T-Mobile USA, that situation led it actually to acquire Sprint, for its plentiful 2.5 GHz 5G-suitable airwaves, but in other cases, sharing agreements open up a key band to multiple operators. This has been seen in Russia (see separate item) and in China, where…