Increasing probability of system information reception in device
The present disclosure relates to a network device and methods for broadcasting a system information message that is associated with a time window. More particularly the disclosure pertains to ensuring reception of a SI message in a UE. In particular, the disclosure relates to a method, performed in a network node, for broadcasting a system information message that is associated with a time window 34 . The method comprises detecting S 1 that the system information, SI, message is of a predetermined message type, transmitting S 2 the system information message in a first subframe 35 a of the associated time window, and transmitting S 3 the system information message in at least one second subframe 35 b of the associated time window, in response to the detection that the system information message is of a predetermined message type.
1. A method, performed in a network node, for broadcasting a system information message that is associated with a time window, the method comprising:
detecting that the system information message is of a predetermined message type,
transmitting the system information message in a first subframe of the associated time window, and
transmitting a duplicate of the system information message in at least one second subframe of the associated time window, in response to the detection that the system information message is of a predetermined message type, wherein a time delay between the first subframe and the second subframe is at least the time of a UE measurement gap.
2. The method of claim 1 , wherein the time window is a radio frame.
3. The method of claim 1 , wherein the method comprises:
configuring the time window by another system information message.
4. The method of claim 1 , wherein the predetermined message type is a Public Warning System Message.
5. The method of claim 1 , wherein the time delay is at least 6 milliseconds.
6. The method of claim 1 , wherein when the first subframe is the first subframe (#0) of a LTE radio frame or a System Information window, then the second subframe is the last subframe (#9) of a LTE radio frame or a System Information window.
7. The method of claim 1 , wherein when the first subframe is the first subframe (#0) of a LTE radio frame or a System Information window, then the second subframe is the 7th subframe (#6) of a LTE radio frame or a System Information window.
8. The method of claim 1 , wherein the first subframe is any subframe (# x) of a LTE radio frame or a System Information window and wherein the System Information message is transmitted in a second subframe at least 6 milliseconds later.
9. The method of claim 1 , wherein the time window is a System Information time window.
10. A non-transitory computer-readable medium comprising, stored thereupon, a computer program comprising computer program code configured for execution by a processor in a radio network node so as to cause the radio network node to:
detect that the system information message is of a predetermined message type,
transmit the system information message in a first subframe of the associated time window, and
transmit a duplicate of the system information message in at least one second subframe of the associated time window, in response to the detection that the system information message is of a predetermined message type wherein a time delay between the first subframe and the second subframe is at least the time of a UE measurement gap.
11. A network node, in a communication system, the network node being configured to broadcast a system information message that is associated with a time window, the network node comprising:
a radio communication interface;
a network communication interface configured for communication with other network nodes, and
processing circuitry configured to cause the network node to:
detect that the system information message is of a predetermined message type,
transmit the system information message in a first subframe of the associated time window, and
transmit a duplicate of the system information message in at least one second subframe of the associated time window, in response to the detection that the system information message is of a predetermined message type, wherein a time delay between the first subframe and the second subframe is at least the time of a UE measurement gap.
12. The network node of claim 11 , wherein the time window is a radio frame or System Information time window.
13. The network node of claim 11 , wherein the processing circuitry is configured to cause the network node to
to configure the time window by a system information message.
14. The network node of claim 11 , wherein the predetermined message type is a Public Warning System Message.
15. The network node of claim 11 , wherein the time delay is at least 6 milliseconds.
16. The network node of claim 11 , wherein when the first subframe is the first subframe (#0) of a LTE radio frame or a System Information window, then the second subframe is the last subframe (#9) of a LTE radio frame or a System Information window.
17. The network node of claim 11 , wherein when the first subframe is the first subframe (#0) of a LTE radio frame or a System Information window, then the second subframe is the 7th subframe (#6) of a LTE radio frame or a System Information window.
18. The network node of claim 11 , wherein the first subframe is any subframe (# x) of a LTE radio frame or a System Information window and wherein the System Information message is transmitted in a second subframe at least 6 milliseconds later.