DYNAMIC SHARED CELL GROUPS
A Shared Cell (SC) Controller uses deployment information, radio resource utilization measurements, cell load measurements, signal quality measurement, operator's policies and radio capabilities to make decisions on system configuration, re-configuration, and channel allocation related to the Shared Cell groups. The SC Controller may also use artificial intelligence/machine learning to predict future system state when making decisions on system configuration and channel allocation. The SC Controller can be implemented in the context of using a CBRS system, the ORAN architecture, and the Shared Cell group of Radio Units (RUs). SC Controller can be implemented as part of the Non-Real Time Radio Intelligent Controller (Non-RT RIC). The SC Controller interfaces with the Citizens Broadband Radio Service Device (CBSD) Controller, and the SC Controller sends the Shared Cell group information to the O-RU Controller so that the O-RU Controller can configure the radio components.
1 . A wireless communications system operating in Citizens Broadband Radio Service (CBRS) spectrum in an Open Radio Access Network (ORAN) environment having radio components including at least one of an ORAN Radio Unit (O-RU), ORAN Distributed Unit (O-DU), and ORAN Centralized Unit (O-CU), comprising:
an interface entity interfacing with a Spectrum Access System (SAS), wherein the interface entity is one of a CBRS Device (CBSD) Controller or a Domain Proxy (DP);
a radio controller responsible for radio management and configuration, wherein the radio controller is configured as an O-RU controller;
a shared cell (SC) controller; and
a radio resource management functionality configured as part of one of i) a Non-Real Time Radio Intelligent Controller (Non-RT RIC) or ii) a Near Real Time Radio Intelligent Controller (Near-RT RIC).
2 . The system according to claim 1 , wherein the SC controller is an entity responsible for at least one of SC configuration and reconfiguration information including at least one of the following:
initial configuration of an SC group, including configuring which O-RUs belong to the SC group when the system starts up;
channel configuration for the SC group;
setting maximum transmit power in downlink (DL) for all O-RUs in the SC group;
reconfiguration of the SC group by at least one of adding and removing O-RUs to the SC group;
creation of a new SC group during regular system operation;
adding channels in the SC group; and
at least one of removing and releasing channels in the SC group.
3 . The system according to claim 2 , wherein the SC controller uses at least one of the following network performance indicators to make decisions on SC group configuration:
downlink (DL) total physical resource block (PRB) usage;
uplink (UL) total PRB usage;
distribution of DL total PRB usage;
distribution of UL total PRB usage;
DL PRB used for data traffic;
DL total available PRB;
UL PRB used for data traffic;
UL total available PRB;
random access channel (RACH) usage;
average number of active user equipments (UEs) in the DL per cell;
maximum number of active UEs in the DL per cell;
average number of active UEs in the UL per cell;
maximum number of active UEs in the UL per cell;
signal-to-interference-and-noise ratio (SINR);
reference signal receive power (RSRP); and
reference signal received quality (RSRQ).
4 . The system according to claim 3 , where the SC controller uses the at least one of the network performance indicators to at least one of infer and predict at least one of future radio resource and cell conditions using at least one of artificial intelligence (AI) and machine learning (ML).
5 . The system according to claim 2 , wherein the SC controller uses O-RU capabilities and O-RU operational parameters to make a decision regarding at least one of the following SC group configurations:
maximum transmit power;
maximum number of carriers that can be supported;
maximum bandwidth per component carrier;
geographical location information including at least one of latitude, longitude, and altitude; and
antenna configuration.
6 . The system according to claim 2 , wherein the SC controller uses policies provided from at least one of i) the cloud via O-RAN O2 interface, ii) an external source via O-RAN External Capabilities Interface, or iii) direct input from network operator via a graphic user interface (GUI), the policies including at least one of the following:
maximizing cell throughput;
maximizing UE throughput;
minimizing interference; and
maximizing the number of active UEs that can be supported in a cell.
7 . The system according to claim 1 , wherein the SC controller is included in the system as an application in the Non-RT MC domain.
8 . The system according to claim 2 , wherein the SC controller interfaces with one of the CBSD Controller or the DP.
9 . The system according to claim 2 , wherein the SC controller interfaces with a radio controller responsible for radio management and configuration.
10 . The system according to claim 2 , wherein the SC group configuration and reconfiguration information are provided to the O-RU controller via O-RAN R1 interface.
11 . The system according to claim 3 , wherein the at least one of the network performance indicators is provided to the SC controller via O-RAN R1 interface.
12 . The system according to claim 1 , wherein the SC controller is included in the system as one of a function or application as part of the O-RU controller.
13 . The system according to claim 1 , wherein the SC controller is included in the system as one of a function or an application as part of the CBSD Controller.
14 . The system of claim 13 , wherein the SC group configuration and reconfiguration information are provided to the O-RU controller via ORAN R1 interface.
15 . The system according to claim 7 , wherein the SC controller is included in the system as an rApp in the Non-RT MC domain.
16 . The system according to claim 9 , wherein the SC controller interfaces with the O-RU Controller.
17 . The system according to claim 8 , wherein the SC controller sends to the CBSD an SC carrier request object including at least one of the following information:
O-RU identity;
number of component carriers requested;
bandwidth per component carrier in MHz;
SC group identification (ID) to which the O-RU is assigned; and
one of Interference Coordination Group (ICG) or Spectrum Reuse Group (SRG) Identity identifying a group of RUs that will not cause interference with one another other in the case the group of RUs use a spectrum grant with the same frequency range.
18 . The system according to claim 1 , wherein the SC controller is an entity responsible for at least one of SC configuration and reconfiguration information, and wherein the SC controller uses O-RU capabilities and O-RU operational parameters to make a decision regarding at least one of the following SC group configurations:
maximum transmit power;
maximum number of carriers that can be supported;
maximum bandwidth per component carrier;
geographical location information including at least one of latitude, longitude, and altitude; and
antenna configuration.
19 . The system according to claim 1 , wherein the SC controller is an entity responsible for at least one of SC configuration and reconfiguration information, and wherein the SC controller uses at least one of the following policies:
maximizing cell throughput;
maximizing UE throughput;
minimizing interference; and
maximizing the number of active UEs that can be supported in a cell.
20 . The system according to claim 1 , wherein the SC controller is an entity responsible for at least one of SC configuration and reconfiguration information, and wherein at least one of:
i) the SC controller is included in the system as an application in the Non-RT RIC domain; and
ii) the SC controller interfaces with one of the CBSD Controller or the DP.