CN-122029843-A - Methods, apparatus, computer readable media, devices and computer program products for location based communication

Abstract

Exemplary embodiments relate to location-based communications. In one method, a terminal device obtains identification information specific to a geographic region of a plurality of geographic regions covered by a non-terrestrial network (non-TERRESTRIAL NETWORK, NTN). The terminal device then receives a reference signal in the geographic area according to the identification information. Thereby, the communication complexity in NTN can be reduced.

Inventors

• Oman jasar
• Amin Marev
• MA JIANGLEI

Assignees

• 华为技术有限公司

Dates

Publication Date

20260512

Application Date

20240402

Priority Date

20231005

Claims (20)

1. 1. A method performed at a terminal device, comprising: Acquiring identification information specific to a geographic region of a plurality of geographic regions covered by a non-terrestrial network NTN, and And receiving a reference signal in the geographic area according to the identification information.
2. 2. The method of claim 1, wherein the identification information is included in geographic area information, and the geographic area information is part of a base file, and wherein the identification information indicates: A plurality of geographic area identifications identifying the plurality of geographic areas, and A plurality of location-specific scrambling identification values corresponding to the plurality of geographic area identifications.
3. 3. The method of claim 2, wherein the reference signal is scrambled with a location-specific scrambling identification value corresponding to a geographic area identification identifying the geographic area, and wherein receiving the reference signal comprises: determining a target geographic area identity from the plurality of geographic area identities, wherein the target geographic area identity identifies a target geographic area in which the terminal device is located, and The reference signal is received using a location-specific scrambling identity value of the plurality of location-specific scrambling identity values that corresponds to the target geographic area identity.
4. 4. A method according to claim 2 or 3, wherein the base file further comprises at least one of: a field indicating the shape type of the geographic area, or The location of the vertices of the geographic area.
5. 5. The method of any of claims 2 to 4, wherein the geographical area information indicates at least one of: The number of time slots within a radio frame; A time slot for transmitting the reference signal; number of symbols in a slot, or Index for symbol.
6. 6. The method of any of claims 2 to 5, wherein the base file further comprises timing reference information, and the timing reference information indicates at least one of: A reference time; a system frame number; A radio frame number; time slot number or And (5) symbol numbers.
7. 7. The method of any of claims 1-6, wherein the identification information comprises a plurality of beam set identifications and a plurality of beam identifications associated with one of the plurality of beam set identifications.
8. 8. The method of any one of claims 1 to 7, wherein the method further comprises: And acquiring the scrambling identification specific to the terminal equipment of the terminal equipment in a connection mode.
9. 9. The method of claim 8, wherein the reference signal is scrambled with the terminal device-specific scrambling identity, receiving the reference signal comprising: The reference signal is received using the terminal device specific scrambling identity.
10. 10. The method of claim 7, wherein: A physical identification of a first beam is determined based on a first beam set identification of the plurality of beam set identifications and a first beam identification of a first plurality of beam identifications associated with the first beam set identification, The first beam set identified by the first beam set identification includes the first beam, and The physical identification is used to identify the first beam at a physical layer.
11. 11. The method of claim 7 or 10, wherein the reference signals comprise a primary synchronization signal PSS and a secondary synchronization signal SSS, and wherein: The PSS transmitted via the first beam is determined based on the first beam set identification, and The SSS transmitted via the first beam is determined based on the first beam identification.
12. 12. The method of any of claims 7 or 10 and 11, wherein the reference signal comprises PSS and SSS, and wherein receiving the reference signal comprises: Receiving the PSS using the plurality of beam set identifications, and The SSS is received using the plurality of beam identities.
13. 13. The method of any of claims 10 to 12, wherein the first beam comprises a transmit beam of the NTN.
14. 14. The method of any of claims 7 or 10 to 13, wherein beams from the NTN are divided into a plurality of beam subsets, and wherein at least one of: activating beams to hop between the plurality of beam subsets to mitigate inter-beam interference; a subset of the plurality of subsets of beams is associated with a geographic area identification that identifies a geographic area, or The subset of beams is associated with a physical identification of the beam.
15. 15. The method of any of claims 1-14, wherein the identification information includes one or more virtual identifications of one or more virtual NTN devices, and wherein a virtual NTN device of the one or more virtual NTN devices is formed by a set of NTN devices of the NTN.
16. 16. The method of claim 15, wherein the reference signal is scrambled with a virtual identifier of the one or more virtual identifiers, and wherein receiving the reference signal comprises: the reference signal is received using the one or more virtual identifications.
17. 17. The method of claim 16, wherein at least one of the following is present: The NTN devices in the NTN device set are used as array elements of a virtual array of virtual NTNs, or At least one member or number of members of the NTN device set varies over time.
18. 18. A method performed at a non-terrestrial network NTN device, comprising: Acquiring identification information specific to a geographic region of a plurality of geographic regions covered by a non-terrestrial network NTN, and And transmitting a reference signal for the geographic area based on the identification information.
19. 19. The method of claim 18, wherein the identification information is included in geographic area information and the geographic area information is part of a base file, and wherein the identification information indicates: A plurality of geographic area identifications identifying the plurality of geographic areas, and A plurality of location-specific scrambling identification values corresponding to the plurality of geographic area identifications.
20. 20. The method of claim 19, wherein the reference signal is scrambled with a location-specific scrambling identification value corresponding to a geographic area identification identifying the geographic area.

Description

Methods, apparatus, computer readable media, devices and computer program products for location based communication Cross Reference to Related Applications The present disclosure claims priority from U.S. provisional application No. 63/588,144 entitled "method, apparatus, and System for location-based communications (METHOD, APPARATUS, AND SYSTEM FOR LOCATION BASED COMMUNICATION)" filed on month 10 of 2023, the disclosure of which is incorporated herein by reference. Technical Field Example embodiments of the present disclosure relate generally to the field of communications and, more particularly, relate to methods, apparatuses, non-transitory computer-readable media, devices, and computer program products for location-based communications. Background With the development of communication technology and the increase of network access demands, a non-terrestrial network (non-TERRESTRIAL NETWORK, NTN) architecture has developed. A non-terrestrial network (non-TERRESTRIAL NETWORK, NTN) is a network or network segment that uses air or space vehicles for transmission. These networks use satellites, drones and other space vehicles to provide wireless connectivity for the most remote areas of the earth. Thus, NTN enables global access to services such as mobile data, voice calls, and information, regardless of geographic location or topography. In general, it is desirable that the scheme in NTN be able to work in conjunction with a terrestrial network (TERRESTRIAL NETWORK, TN) to provide communications at acceptable cost (e.g., power consumption and/or complexity). In addition, NTN has unique characteristics different from typical TN, and studying the unique characteristics can improve the performance of NTN. Disclosure of Invention In general, exemplary embodiments of the present disclosure provide a scheme for location-based communications, in particular for NTN-based communications. It should be understood that this disclosure is not intended to identify key features or essential features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following description. In a first aspect, a method implemented at a terminal device is provided. In the method, a terminal device obtains identification information specific to one of a plurality of geographic areas covered by a non-terrestrial network (non-TERRESTRIAL NETWORK, NTN). That is, in NTN, the identification information is configured for a fixed geographic area on earth, rather than the current coverage area of the NTN devices in the NTN. The terminal device then receives a reference signal in the geographical area according to the identification information. Thus, even if the current coverage area of the moving NTN varies with the movement of the NTN device, the terminal device can receive the reference signal using the identification information specific to the geographical area on the earth without re-confirming the identification information required to receive the reference signal. In this way, the complexity of communication in NTN can be reduced. In some implementations of the present disclosure, the identification information is included in geographic area information, and the geographic area information is part of the base file. The identification information indicates a plurality of geographic area identifications identifying a plurality of geographic areas and a plurality of location-specific scrambling identification values corresponding to the plurality of geographic area identifications. Thereby, the identification information can be preconfigured to the terminal device through the basic file in the subscriber identity module (Subscriber Identity Module, USIM). Additionally, a location-specific scrambling identification value may be obtained by determining a corresponding geographic area identification, which may be determined based on the location of the terminal device. In some implementations of the disclosure, the reference signal is scrambled with a location-specific scrambling identity value that corresponds to a geographic area identity that identifies the geographic area. The reference signal may be received by determining a target geographic area identity from a plurality of geographic area identities, wherein the target geographic area identity identifies a target geographic area in which the terminal device is located, and receiving the reference signal using a location-specific scrambling identity value of a plurality of location-specific scrambling identity values that corresponds to the target geographic area identity. Thus, from the point of view of the terminal device, the NTN may be "transparent". The terminal device may receive, detect, decode or measure the reference signal in the NTN using the location-specific scrambling identity value determined based on the location of the terminal device even if the cover