In the past, the performance of the cellular uplink has been far less important than boosting downlink capacity and efficiency, for all that web browsing and content downloading. But with 5G, there will be far greater focus on the uplink, to support tising usage of a range of services from low latency IoT applications, to video streaming from security cameras, to content sharing on social media. The growing role of unpaired TDD spectrum in 5G will be important since it gives the operator the flexibility to decide how resources are balanced between uplink and downlink. But technical advances are needed too, and one breakthrough is being claimed by Huawei and China Telecom. The two companies have co-developed a technology designed…