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US 2019/0104527 A1Published application
Dynamic downlink reuse in a c-ran
AssigneeCommScope Technologies LLC
InventorsBalaji B. Raghothaman, Stuart D. Sandberg, Kompella Purnima, Anil Bapat
Life of this patent
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Abstract
This disclosure is directed to various ways to dynamically manage the subset of radio points that are used to transmit to user equipment in a C-RAN.
Claims20
A system to provide wireless service comprising:
- a controller;
- and
- a plurality of radio points;
- wherein each of the radio points is associated with at least one antenna and remotely located from the controller, wherein the plurality of radio points is communicatively coupled to the controller;
- wherein the controller and the plurality of radio points are configured to implement a base station in order to provide wireless service to a plurality of user equipment (UEs) using a cell;
- wherein the controller is communicatively coupled to a core network of a wireless service provider;
- wherein the system is configured to transmit at least some data to each UE connected to the cell using a respective subset of the radio points;
- wherein the system is configured to determine the respective subset of the radio points for transmitting to each UE connected to the cell using a signature vector comprising a set of signal reception metrics, each signal reception metric associated with a respective one of the radio points and indicative of the reception of a signal transmitted from the respective UE at one of the radio points;
- and
- wherein the system is configured to do the following when each UE establishes a new connection with the cell:
- determine initial signal reception metrics for that UE;
- and
- if the system has a stored signature vector associated with that UE and that stored signature vector matches the initial signal reception metrics for that UE, initialize the signature vector for that UE using that stored signature associated with that UE.
10 more elements
A system to provide wireless service comprising:
- a controller;
- and
- a plurality of radio points;
- wherein each of the radio points is associated with at least one antenna and remotely located from the controller, wherein the plurality of radio points is communicatively coupled to the controller;
- wherein the controller and the plurality of radio points are configured to implement a base station in order to provide wireless service to a plurality of user equipment (UEs) using a cell;
- wherein the controller is communicatively coupled to a core network of a wireless service provider;
- wherein the system is configured to do the following for each UE connected to the cell:
- determine a signature vector comprising a set of signal reception metrics, each signal reception metric associated with a respective one of the radio points and indicative of the reception of a signal transmitted from the respective UE at one of the radio points;
- determine a respective minimum subset of the radio points for transmitting to that UE;
- determine a respective maximum subset of the radio points for transmitting to that UE;
- and
- determine a respective current subset of the radio points for transmitting to that UE based on, at least, the signature vector, the respective minimum subset of the radio points for transmitting to that UE, and the respective maximum subset of the radio points for transmitting to that UE;
- wherein the system is configured to, for each UE connected to the cell, expand the number of radio points in the minimum subset of the radio points if the respective signature vector for that UE has not been updated at least a predetermined number of times;
- and
- wherein the system is configured to wirelessly transmit at least some data to each UE connected to the cell using the respective current subset of the radio points determined for that UE based.
12 more elements
A system to provide wireless service comprising:
- a controller;
- and
- a plurality of radio points;
- wherein each of the radio points is associated with at least one antenna and remotely located from the controller, wherein the plurality of radio points is communicatively coupled to the controller;
- wherein the controller and the plurality of radio points are configured to implement a base station in order to provide wireless service to a plurality of user equipment (UEs) using a cell;
- wherein the controller is communicatively coupled to a core network of a wireless service provider;
- wherein the system is configured to do the following for each UE connected to the cell:
- determine a signature vector comprising a set of signal reception metrics, each signal reception metric associated with a respective one of the radio points and indicative of the reception at one of the radio points of a signal transmitted from the respective UE;
- determine a respective minimum subset of the radio points for transmitting to that UE;
- determine a respective maximum subset of the radio points for transmitting to that UE;
- and
- determine a respective current subset of the radio points for transmitting to that UE based on, at least, the signature vector, the respective minimum subset of the radio points for transmitting to that UE, and the respective maximum subset of the radio points for transmitting to that UE;
- wherein the system is configured to, for each UE connected to the cell, update the respective current subset of the radio points used to transmit that UE based on at least one of the following:
- at least one ratio of the actual rate of throughput for at least one UE connected to the cell and an estimated rate of throughput for said at least one UE connected to the cell;
- at least one processing load at the radio points;
- and
- demand from at least one UE connected to the cell to use at least one radio point;
- and
- wherein the system is configured to wirelessly transmit at least some data to each UE connected to the cell using the respective current subset of the radio points determined for that UE.
16 more elements
Dependencies are inferred from the claim text.