Positioning enhancements for narrowband internet of things
Systems and methods of providing location techniques for a NB UE are described. The UE transmits, to a location server, a capability message that indicates position capabilities of the UE to support different positioning methods and common information related to the position methods, including that the UE is a NB UE. The UE receives a request for location information that includes a request for positioning measurements for a particular positioning method, a NB message size limit that indicates a limit on an amount of location information to return, and a NB response time to provide the positioning measurements. At least one of the response time or message size limit is different than for the NB UE than for non-NB UEs. The UE enters an idle state, performs the measurements, and transmits at expiry of or before the NB response time, a message containing the measurements.
1. A server, comprising:
a memory;
at least one network interface; and
processing circuitry in communication with the memory and at least one network interface and configured to cause the server to:
receive, from a narrowband internet of things (NB-IoT) user equipment (UE), a capability message that indicates position capabilities of the NB-IoT UE;
transmit, to the NB-IoT UE, assistance data to perform positioning measurements, the assistance data specific to a particular positioning method indicated by the server, the assistance data transmitted prior to transmission of a request for location information message;
transmit, to the NB-IoT UE, the request for location information message comprising a request for positioning measurements and a NB response time to provide the positioning measurements, wherein the NB response time supports idle mode positioning measurements by the NB-IoT UE; and
receive, from the NB-IoT UE, at least one message containing the positioning measurements in accordance with the NB response time.
2. The server of claim 1 ,
wherein the processing circuitry is further configured to cause the server to:
determine a location of the NB-IoT UE based on the positioning measurements.
3. The server of claim 1 ,
wherein the NB response time is dependent on the position capabilities received in the capability message.
4. The server of claim 3 ,
wherein the NB response time is longer than a response time for a non-NB-IoT UE.
5. The server of claim 1 ,
wherein the request for location information message further comprises a NB message size limit that indicates a limit on an amount of location information the NB-IoT UE is to return in response to the request for location information message.
6. The server of claim 1 ,
wherein the capability message further comprises information common to a plurality of position methods, the information comprising an indication of a type of the NB-IoT UE, the type of the NB-IoT UE being NB-IoT.
7. The server of claim 1 ,
wherein the processing circuitry is further configured to cause the server to:
generate the request for location information message dependent on an indication of a type of the NB-IoT UE.
8. The server of claim 1 ,
wherein, when the particular positioning method is Observed Time Difference of Arrival (OTDOA), the assistance data comprises NB reference cell information and NB neighbor cell information, and the NB reference cell information and NB neighbor cell information are contained in different information elements than reference cell information and neighbor cell information for non-NB-IoT UEs; and
wherein, when the particular positioning method is Enhanced Cell-ID (E-CID), the positioning measurements comprise at least one of Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ) for inter-frequency neighbor cells.
9. A method comprising:
a server,
receiving, from a narrow band internet of things (NB-IoT) user equipment (UE) a capability message that indicates position capabilities of the NB-IoT UE;
transmitting, to the NB-IoT UE, assistance data to perform positioning measurements, the assistance data specific to a particular positioning method indicated by the server, the assistance data transmitted prior to transmission of a request for location information message;
transmitting, to the NB-IoT UE, the request for location information message comprising a request for positioning measurements and a NB response time to provide the positioning measurements, wherein the NB response time supports idle mode positioning measurements by the NB-IoT UE; and
receiving, from the NB-IoT UE, at least one message containing the positioning measurements in accordance with the NB response time.
10. The method of claim 9 ,
wherein the NB response time is dependent on the position capabilities sent in the capability message.
11. The method of claim 10 ,
wherein the NB response time is longer than a response time for a non-NB-IoT UE.
12. The method of claim 9 ,
wherein the request for location information message further comprises a NB message size limit that indicates a limit on an amount of location information the NB-IoT UE is to return in response to the request for location information LPP message.
13. The method of claim 9 ,
wherein the capability message further comprises information common to a plurality of position methods, the information comprising an indication of a type of the NB-IoT UE, the type of the NB-IoT UE being NB-IoT.
14. The method of claim 9 ,
wherein, when the particular positioning method is Observed Time Difference of Arrival (OTDOA), the assistance data comprises NB reference cell information and NB neighbor cell information, and the NB reference cell information and NB neighbor cell information are contained in different information elements than reference cell information and neighbor cell information for non-NB-IoT UEs; and
wherein, when the particular positioning method is Enhanced Cell-ID (E-CID), the positioning measurements comprise at least one of Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ) for inter-frequency neighbor cells.
15. An apparatus, comprising:
a memory; and
at least one processor in communication with the memory and configured to:
receive, from a narrowband internet of things (NB-IoT) user equipment (UE), a capability message that indicates position capabilities of the NB-IoT UE;
transmit, to the NB-IoT UE, assistance data to perform positioning measurements, the assistance data specific to a particular positioning method indicated by the apparatus, the assistance data transmitted prior to transmission of a request for location information message;
transmit, to the NB-IoT UE, the request for location information message comprising a request for positioning measurements and a NB response time to provide the positioning measurements, wherein the NB response time supports idle mode positioning measurements by the NB-IoT UE; and
receive, from the NB-IoT UE, at least one message containing the positioning measurements in accordance with the NB response time.
16. The apparatus of claim 15 ,
wherein the at least one processor further configured to:
determine a location of the NB-IoT UE based on the positioning measurements.
17. The apparatus of claim 15 ,
wherein the NB response time is dependent on the position capabilities received in the capability message.
18. The apparatus of claim 17 ,
wherein the NB response time is longer than a response time for a non-NB-IoT UE.
19. The apparatus of claim 15 ,
wherein the request for location information message further comprises a NB message size limit that indicates a limit on an amount of location information the NB-IoT UE is to return in response to the request for location information message.
20. The apparatus of claim 15 ,
wherein the capability message further comprises information common to a plurality of position methods, the information comprising an indication of a type of the NB-IoT UE, the type of the NB-IoT UE being NB-IoT.