Electronic device in wireless communication system and wireless communication method
The present disclosure relates to an electronic device in a wireless communication system and a wireless communication method. The electronic device comprises: one or more processing circuits, wherein the processing circuits are configured to execute the following operations: acquiring an on/off state of a small cell base station in a pre-determined geographical area; and on the basis of the acquired on/off state of the small cell base station, generating reconfiguration information about a positioning reference signal (PRS) used for the small cell base station in the pre-determined geographical area, so as to position user equipment in the pre-determined geographical area. By using the electronic device and the wireless communication method in the present disclosure, an existing PRS signal can be reconfigured, so as to improve the positioning accuracy, and achieve the purpose of accelerating the positioning process.
1. An electronic device in a wireless communication system, comprising one or more processing circuits configured to:
acquire an on/off state of a small cell base station within a predetermined geographical region; and
generate, based on the acquired on/off state of the small cell base station, reconfiguration information of a positioning reference signal PRS for the small cell base station within the predetermined geographical region, to position a user equipment within the predetermined geographical region, wherein
the reconfiguration information of the PRS comprises a PRS transmission period of an on small cell base station, and the processing circuits are further configured to adjust the PRS transmission period of the on small cell base station based on a ratio of the number of off small cell base stations within the predetermined geographical region to the number of small cell base stations within the predetermined geographical region.
2. The electronic device according to claim 1 , wherein the processing circuits are configured to reduce the PRS transmission period of the on small cell base station in a case that the ratio is greater than a first threshold, and increase the PRS transmission period of the on small cell base station in a case that the ratio is less than a second threshold.
3. The electronic device according to claim 1 , wherein the reconfiguration information of the PRS comprises PRS configuration assistance information of an off small cell base station within the predetermined geographical region, and the processing circuits are further configured to allocate a time frequency resource of the off small cell base station for transmitting a PRS as an idle resource to an on small cell base station.
4. The electronic device according to claim 3 , wherein the processing circuits are configured to allocate the idle resource to the on small cell base station based on a priority level of the on small cell base station.
5. The electronic device according to claim 4 , wherein the processing circuits are configured to determine the priority level by:
determining an on small cell base station for positioning respective user equipment based on a rough geographical location of the respective user equipment;
counting the number of occurrence of the on small cell base station for positioning the respective user equipment within a predetermined time period; and
determining the priority level based on a result of the counting.
6. The electronic device according to claim 1 , wherein the reconfiguration information of the PRS comprises blending information indicating that the PRS is configured in a discovery reference signal DRS, and the processing circuits are further configured to generate the blending information based on the number of occurrence of an off small cell base station for positioning the respective user equipment within a predetermined time period.
7. The electronic device according to claim 6 , wherein the blending information comprises location information indicating a configuration position of the PRS in the DRS, and the processing circuits are further configured to generate the location information based on configuration information of the DRS.
8. The electronic device according to claim 1 , wherein the electronic device is a location server in a core network.
9. An electronic device in a wireless communication system, comprising one or more processing circuits configured to:
determine reconfiguration information of a positioning reference signal PRS from a control device, wherein the reconfiguration information of the PRS comprises blending information indicating that the PRS is configured in a discovery reference signal DRS; and
reconfigure the DRS based on the blending information, to position a user equipment, wherein the one or more processing circuits are further configured to generate the blending information based on a number of occurrence of an off small cell base station for positioning the user equipment within a predetermined time period, and the blending information comprises location information indicating a configuration location of the PRS in the DRS, and the one or more processing circuits are configured to reconfigure the DRS based on the location information.
10. The electronic device according to claim 9 , wherein the processing circuits are configured to configure the PRS to occupy 1, 2, or 4 subframes in the DRS.
11. The electronic device according to claim 9 , wherein the processing circuits are configured to configure a period of the PRS to be n times of a period of the DRS, wherein n is a natural number.
12. The electronic device according to claims 9 , wherein the electronic device is a small cell base station in an off state, and further comprises a transceiver configured to transmit the DRS via an air interface.
13. An electronic device in a wireless communication system, comprising one or more processing circuits configured to:
determine reconfiguration information of a positioning reference signal PRS from a control device, wherein the reconfiguration information of the PRS comprises PRS configuration assistance information of an off small cell base station;
reconfigure the PRS based on the PRS configuration assistance information, to position a user equipment using a time frequency resource of the off small cell base station for transmitting a PRS as an idle resource;
determine resource release information from the control device, wherein the resource release information indicates that the off small cell base station has been turned on; and
reconfigure the PRS based on the resource release information, to release the time frequency resource of the off small cell base station for transmitting the PRS.
14. The electronic device according to claim 13 , wherein the PRS configuration assistance information is specific location information on a resource element of the off small cell base station for transmitting the PRS.
15. The electronic device according to claim 13 , wherein the PRS configuration assistance information is PRS configuration information of the off small cell base station.
16. The electronic device according to claim 13 , wherein the electronic device is a small cell base station in an on-state, and further comprises a transceiver configured to transmit the PRS via an air interface.