CN-113055981-B - Electronic device, communication method, and storage medium in wireless communication system

Abstract

The present disclosure relates to an electronic device, a communication method, and a storage medium in a wireless communication system. An electronic device for a low frequency base station includes processing circuitry configured to obtain a Channel State Information (CSI) matrix based on a reference signal received from a user device via low frequency communication, determine candidate high frequency base stations from a plurality of high frequency base stations suitable for high frequency communication with the user device using a neural network based on the CSI matrix, determine access assistance information associated with the candidate high frequency base stations, and transmit the access assistance information to the user device.

Inventors

• MA KE
• WANG ZHAOCHENG
• CAO JIANFEI

Assignees

• 索尼公司

Dates

Publication Date

20260512

Application Date

20191226

Claims (20)

1. 1. An electronic device for a low frequency base station, comprising: processing circuitry configured to: Acquiring a Channel State Information (CSI) matrix based on a reference signal received from a user equipment via low frequency communication; determining candidate high-frequency base stations suitable for high-frequency communication with the user equipment from a plurality of high-frequency base stations by using a neural network by inputting the CSI matrix and position data of the plurality of high-frequency base stations into the neural network; Determining access assistance information associated with a candidate high-frequency base station, and And sending the access auxiliary information to the user equipment.
2. 2. The electronic device of claim 1, wherein the processing circuit is further configured to: And determining a high-frequency base station with the minimum path loss for high-frequency communication with the user equipment as the candidate high-frequency base station.
3. 3. The electronic device of claim 2, wherein the processing circuit is further configured to: and transmitting the path loss value corresponding to the candidate high-frequency base station to the user equipment.
4. 4. The electronic device of claim 2, wherein the processing circuit is further configured to: And under the condition that the path loss value corresponding to the candidate high-frequency base station is lower than a preset threshold value, the user equipment is instructed to start a high-frequency communication module.
5. 5. The electronic device of claim 1, wherein the processing circuit is further configured to: And determining a high frequency base station having the greatest reception power for high frequency communication at the user equipment as the candidate high frequency base station by inputting the CSI matrix and position data and transmission power of the plurality of high frequency base stations into the neural network.
6. 6. The electronic device of claim 5, wherein the processing circuit is further configured to: and transmitting the receiving power value corresponding to the candidate high-frequency base station to the user equipment.
7. 7. The electronic device of claim 5, wherein the processing circuit is further configured to: And under the condition that the receiving power value corresponding to the candidate high-frequency base station exceeds a preset threshold value, the user equipment is instructed to start a high-frequency communication module.
8. 8. The electronic device of claim 1, wherein the processing circuit is further configured to: determining, using the neural network, a beam for the user equipment for the candidate high-frequency base station; And notifying the candidate high-frequency base stations of the identification codes of the user equipment and the information of the wave beams.
9. 9. The electronic device of claim 8, wherein the information about the beam is an index of a synchronization signal/physical broadcast channel block (SSB) corresponding to the beam.
10. 10. The electronic device of claim 1, wherein the access assistance information comprises frequency locations of synchronization signals/physical broadcast channel blocks (SSBs) of the candidate high-frequency base stations.
11. 11. The electronic device of claim 8, wherein the access assistance information comprises a frequency location and an index of a synchronization signal/physical broadcast channel block (SSB) of the candidate high-frequency base station.
12. 12. The electronic device of claim 1, wherein the processing circuit is further configured to: receiving a reference signal transmitted via low frequency communication and identification information of any one of the plurality of high frequency base stations from a user equipment performing high frequency communication with the any one of the high frequency base stations; the parameters of the neural network are updated by using the CSI matrix acquired based on the reference signal and the position data of any one of the high frequency base stations as inputs and using the identification information of any one of the high frequency base stations as outputs.
13. 13. The electronic device of claim 2, wherein the processing circuit is further configured to: Receiving, from a user equipment performing high frequency communication with any one of the plurality of high frequency base stations, a path loss value of the high frequency communication estimated by the user equipment; The parameters of the branch network of the neural network are updated by using the path loss value as an output.
14. 14. The electronic device of claim 2, wherein the processing circuit is further configured to: receiving an identification code of a user equipment and information on a beam used for high frequency communication from a high frequency base station which performs high frequency communication with the user equipment among the plurality of high frequency base stations; By using the information on the beam for the high-frequency communication as an output, parameters of a branch network of the neural network are updated.
15. 15. The electronic device of claim 1, wherein the low frequency communication operates in an LTE band, an LTE-a band, or a sub-6GHz band, and wherein the high frequency communication operates in a millimeter wave band.
16. 16. An electronic device for a user device, comprising: processing circuitry configured to: Transmitting a reference signal to a low frequency base station via low frequency communication for the low frequency base station to acquire a Channel State Information (CSI) matrix; Receiving access assistance information associated with a candidate high frequency base station determined by a low frequency base station, wherein the candidate high frequency base station is a high frequency base station determined by the low frequency base station by inputting the CSI matrix and position data of a plurality of high frequency base stations into a neural network using the neural network and adapted to communicate with the user equipment at high frequency, and And accessing the candidate high-frequency base station by utilizing the access auxiliary information.
17. 17. The electronic device of claim 16, wherein the candidate high-frequency base station is a high-frequency base station predicted by the neural network to have a minimum path loss for high-frequency communications with the user device.
18. 18. The electronic device of claim 16, wherein the candidate high-frequency base station is a high-frequency base station predicted by the neural network to have a highest received power at the user device for high-frequency communications with the user device.
19. 19. The electronic device of claim 17, wherein the processing circuit is further configured to: receiving path loss values corresponding to the candidate high frequency base stations from the low frequency base stations, and And in the case that the path loss value is lower than a preset threshold value, starting a high-frequency communication module to access the candidate high-frequency base station.
20. 20. The electronic device of claim 18, wherein the processing circuit is further configured to: receiving a reception power value corresponding to the candidate high-frequency base station from a low-frequency base station, and And in the case that the received power value exceeds a preset threshold value, starting a high-frequency communication module to access the candidate high-frequency base station.

Description

Electronic device, communication method, and storage medium in wireless communication system Technical Field The present disclosure relates to an electronic device, a communication method, and a storage medium in a wireless communication system, and more particularly, to an electronic device, a communication method, and a storage medium that facilitate millimeter wave communication access using low frequency communication in a high-low frequency hybrid network architecture. Background With the increasing number of wireless communication users and the increasing demands and traffic of users, the data volume of mobile communication has shown explosive growth. Current mobile communication is limited by the bandwidth of the microwave frequency band, and cannot adapt to the service requirement of users. For this reason, the development of broadband mobile communication using higher frequency bands has become a hot trend. Millimeter waves (MILLIMETER WAVE) can greatly enrich available spectrum resources, which means wider bandwidth and faster transmission rate, and in addition, according to antenna theory, the size of an antenna used for millimeter wave communication is also in millimeter magnitude, so that hundreds or even thousands of millimeter wave antennas can be placed in a small-range space, and the application of a large-scale multiple input multiple output (Massive MIMO) technology in a practical system is facilitated. Thus, millimeter wave technology is one of the key technologies in 5G wireless communication systems. On the other hand, millimeter wave communication has the defects of too small coverage area and too large power consumption. Spatial beams with directivity can be formed using beamforming techniques to concentrate energy in a specific spatial direction against channel path fading, thereby expanding coverage. In addition, a topology of high-low frequency hybrid deployment may be utilized to achieve a wide range of stable coverage and provide low rate transmission services for User Equipment (UE) by using a low frequency base station (e.g., a conventional LTE base station) as an anchor point, and consider switching to a high frequency base station (e.g., a millimeter wave base station) when the UE has a need for high rate data transmission. Such a high-low frequency hybrid deployment may combine the advantages of both low frequency communications and high frequency communications. However, in deciding to access the mmwave base stations, since the wireless channel quality between the UE and each mmwave base station is unknown, the UE cannot know which mmwave base station is most suitable for access. If searches for individual millimeter wave base stations are performed in sequence, the efficiency of the access will be low. Even as the worst case, if the channel quality of any millimeter wave base station cannot meet the communication requirement, the power consumption waste will be caused by the trade-off of the millimeter wave communication module. Accordingly, in a wireless communication system to which, for example, millimeter waves are applied, there is a demand for a high-frequency communication access method. Disclosure of Invention In view of the above-mentioned problems and other problems, various aspects of the present disclosure provide solutions suitable for efficiently accessing high frequency base stations, such as millimeter wave base stations, in a high-low frequency hybrid network architecture. The following presents a simplified summary of the disclosure in order to provide a basic understanding of some aspects of the disclosure. It should be understood that this summary is not an exhaustive overview of the disclosure. It is not intended to identify key or critical elements of the disclosure or to delineate the scope of the disclosure. Its purpose is to present some concepts related to the disclosure in a simplified form as a prelude to the more detailed description that is presented later. According to one aspect of the disclosure, an electronic device for a low frequency base station is provided, comprising processing circuitry configured to obtain a Channel State Information (CSI) matrix based on a reference signal received from a user device via low frequency communication, determine candidate high frequency base stations from a plurality of high frequency base stations suitable for high frequency communication with the user device using a neural network based on the CSI matrix, determine access assistance information associated with the candidate high frequency base stations, and transmit the access assistance information to the user device. According to one aspect of the disclosure, there is provided an electronic device for a user equipment, comprising processing circuitry configured to transmit a reference signal to a low frequency base station via a low frequency link for the low frequency base station to acquire a Channel State Information (CSI) matrix, receive acce