System and method for multi-hierarchical cell configuration
Provided is a system and method for configuring a multi-hierarchical cell in which a large-scale mobile backhaul technology and a small cell technology are combined. A mobile backhaul may increase a transmission capacity of a wireless backhaul using a super high frequency (SHF)/extremely high frequency (EHF) band, rather than a cellular band having a limitation in extending frequency resources, and a small group cell to be formed at a final end of the mobile backhaul may be configured by fixed group cells or mobile group cells depending on a radio environment, using a moving relay, wireless fidelity (WiFi), femto-cells, and the like, whereby cells may be miniaturized effectively, and a relatively great capacity of a wireless system may be provided to a subscriber.
1. A system having a multi-hierarchical cell, the system comprising:
a service infrastructure configured to provide accumulated knowledge;
a device infrastructure comprising devices that are supplied with the accumulated knowledge from the service infrastructure;
a network infrastructure configured to provide a network connection between the service infrastructure and the device infrastructure; and
a platform infrastructure configured to perform a task of processing data collected from the device infrastructure and the network infrastructure into knowledge and accumulating the knowledge in the service infrastructure,
wherein the network infrastructure includes a radio access network, and the radio access network comprises a digital cloud center, and
wherein the digital cloud center analyzes positioning information and radio environment information of a device, and selects and allocates a frequency band most suitable for a corresponding cell in real time;
wherein locations of small cells included in the multi-hierarchical cell are determined such that a line of sight (LoS) radio environment is guaranteed to be at a maximum by a communication common carrier.
2. The system of claim 1 , wherein the platform infrastructure comprises:
a content domain to perform a task required for the service infrastructure based on multi-processing;
a device domain to perform a task required for the device infrastructure based on single-processing;
a network domain to perform a task required for the network infrastructure;
a service platform to be utilized by the content domain or the network domain; and
a device platform to be utilized by the network domain or the device domain.
3. The system of claim 1 , wherein the network infrastructure further includes a core network;
wherein the radio access network further comprises a global resource manager and the multi-hierarchical cell, radio resources of the multi-hierarchical cell being controlled and managed by the global resource manager that operates in the digital cloud center, and
wherein the multi-hierarchical cell includes at least one of a macro-cell, a micro-cell, and a pico-cell.
4. The system of claim 3 , wherein the digital cloud center integrally manages at least one of available spectrum resources, a level of interference, and a scale of available radio resources of the multi-hierarchical cell managed by the global resource manager.
5. The system of claim 3 , wherein the digital cloud center reconstructs a shape of the corresponding cell to be suitable for the allocated frequency band.
6. The system of claim 3 , wherein the global resource manager performs at least one of a device mobility management function, and a contents centric network (CCN) function.
7. The system of claim 3 , wherein the multi-hierarchical cell is configured by links corresponding to a number of tiers, and frequency bands corresponding to the number of tiers.
8. The system of claim 3 , wherein each cell included in the multi-hierarchical cell is connected to an upper level cell or an identical level cell via a radio link or a wired link.
9. The system of claim 1 , wherein the locations of the small cells included in the multi-hierarchical cell are determined based on at least one of a maximum number of concurrent subscribers, a maximum supporting transmission rate per subscriber, and an average quality of service (QoS) per service of a subscriber.
10. The system of claim 3 , wherein a number of digital cloud centers and locations of the digital cloud centers are determined based on computing powers of the digital cloud centers, a size of a storage space, and a capability of a server that provides the digital cloud centers.
11. The system of claim 3 , wherein the digital cloud center is connected to each small cell included in the multi-hierarchical cell by a radio link path of a single hop, and
each small cell included in the multi-hierarchical cell is connected to other cells via multiple radio links ensuring that a line of sight (LoS) in each small cell is maximally supported.
12. The system of claim 11 , wherein the radio link uses a cellular band, or a super high frequency (SHF)/extremely high frequency (EHF) band.
13. The system of claim 11 , wherein a frequency band of the radio link changes in real time, depending on a radio environment, when a cognitive radio system (CRS) is applied to the radio link.
14. The system of claim 11 , wherein each small cell is a femto-cell in an outdoor environment, and is a wireless fidelity (WiFi) cell in an indoor environment.