Fragmenting public warning system messages in a wireless system
AssigneeOutdoor Wireless Networks LLC
InventorsShiva Prakash, Minyan Shi
Life of this patent
Estimating the term…
Abstract
A base station includes a plurality of remote units (RUs), each being configured to exchange RF signals with at least one UE. The C-RAN also includes a controller communicatively coupled to the plurality of RUs via a fronthaul interface. The controller is configured to receive a public warning system (PWS) alert message. The controller is also configured to determine a number of bytes, based on a channel bandwidth of a wireless channel used by the base station, for each of a plurality of system information block messages. The plurality of system information block messages are broadcast wirelessly to the at least one UE.
Claims40
A base station, comprising:
- a plurality of remote units (RUs), each being configured to exchange radio frequency (RF) signals with at least one user equipment (UE);
- a controller communicatively coupled to the plurality of RUs via a fronthaul interface, the controller being configured to:
- receive a public warning system (PWS) alert message;
- determine a number of bytes, based on a channel bandwidth of a wireless channel used by the base station, for each of a plurality of system information block messages;
- wherein the plurality of system information block messages are broadcast wirelessly to the at least one UE.
A method performed by a controller in a base station, the method comprising:
- receiving a public warning system (PWS) alert message;
- determining a number of bytes, based on a channel bandwidth of a wireless channel used by the base station, for each of a plurality of system information block messages;
- wherein the plurality of system information block messages are broadcast wirelessly to at least one UE.
A base station, comprising:
- a plurality of remote units (RUs), each being configured to exchange radio frequency (RF) signals with at least one user equipment (UE);
- a controller communicatively coupled to the plurality of RUs via a fronthaul interface, the controller being configured to:
- determine a minimum number of system information block messages required to broadcast a warning message (WM) portion and a warning area co-ordinate (WAC) portion of a PWS alert message;
- allocate a maximum number of bytes in each system information block message to the WAC portion of the PWS alert message based on at least a size of the WM portion of the PWS alert message and the minimum number of system information block messages required to transmit the WM portion and the WAC portion of the PWS alert message;
- allocate a second number of bytes in each system information block message, after allocating for the WAC portion, to the WM portion of the PWS alert message;
- form the system information block messages with WM data in the second number of bytes and WAC data in the maximum number of bytes or less.
A method performed by a controller in a base station, the method comprising:
- determining a minimum number of system information block messages required to broadcast a warning message (WM) portion and a warning area co-ordinate (WAC) portion of a PWS alert message;
- allocating a maximum number of bytes in each system information block message to the WAC portion of the PWS alert message based on at least a size of the WM portion of the PWS alert message and the minimum number of system information block messages required to transmit the WM portion and the WAC portion of the PWS alert message;
- allocating a second number of bytes in each system information block message, after allocating for the WAC portion, to the WM portion of the PWS alert message;
- forming the system information block messages with WM data in the second number of bytes and WAC data in the maximum number of bytes or less.
Dependencies are inferred from the claim text.