prefer to be processed locally and only the necessary information can be centrally collected, which open the door for the third parties to join the business. Any local organizations or even person who has the ability to collect data or process the data can become the InSPs in this area and offer the needed information to the NSPs. For example, the data analytic company, spectrum broker, and smart wearable device companies can be the DKaaS provider in this context. As such, when DKaaS can be realized, the responsibility of carrying big data transmission and analytic of the NSPs can be leased to dedicated entities, and the radio resources can be better utilized in order to obtain Quility of Service (QoS) improvement to the end-users.

Cache-as-a-Service (CaaS)
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To improve the QoS of real-time data services and alleviate the substantial real-time traffic on the backhaul or fronthaul, enabling the storage and cache capabilities of BS is emerging as one of the effective solutions [@Zhou]. All these features, as we can predict, can support to realize the concept of Cache-as-a-Service (CaaS), where cache, no matter it is either personal or belonging to the company-own InSP, can be offered to the NSPs. However, 