TECHNICAL FIELD

The present disclosure relates generally to wireless communications, and more particularly, to leveraging positioning reference signal and positioning measurements to enhance random access.

BACKGROUND

Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies.

SUMMARY

The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

In an aspect of the disclosure, methods, computer-readable media, and apparatuses are provided. The apparatuses may be user equipment (UE) or a base station. Certain aspects of the present disclosure provide a method for wireless communication, performed by a wireless device, such as a user equipment (UE). The method generally includes: receiving at least one downlink (DL) signal from one or more base stations or transmitting at least one uplink (UL) positioning reference signal (PRS), the received at least one DL signal comprising: at least one DL PRS, at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, wherein at least one measurement is performed based, at least in part, on the received at least one DL signal or the transmitted at least one UL PRS; and performing at least one adjustment for random access based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide an apparatus for wireless communication. The apparatus may be a UE and may generally include at least one processor, memory coupled (electronically, operatively, communicatively, or otherwise) to the at least one processor, the memory comprising instructions executable (e.g., directly, or after compiling, converting, interpreting, etc.) by the at least one processor to cause the apparatus to: receive at least one downlink (DL) signal from one or more base stations or transmitting at least one uplink (UL) positioning reference signal (PRS), the received at least one DL signal comprising: at least one DL PRS, at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, wherein at least one measurement is performed based, at least in part, on the received at least one DL signal or the transmitted at least one UL PRS; and perform at least one adjustment for random access based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide for an apparatus for wireless communication. The apparatus may be a UE and may generally include: means for receiving at least one downlink (DL) signal from one or more base stations or transmitting at least one uplink (UL) positioning reference signal (PRS), the received at least one DL signal comprising: at least one DL PRS, at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, wherein at least one measurement is performed based, at least in part, on the received at least one DL signal or the transmitted at least one UL PRS; and means for performing at least one adjustment for random access based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide for a computer-readable medium for wireless communication by a wireless device, such as a UE. The computer-readable medium generally includes code, which when executed (e.g., directly, or after compiling, converting, interpreting, etc.) by at least one processor, causes the UE to: receive at least one downlink (DL) signal from one or more base stations or transmitting at least one uplink (UL) positioning reference signal (PRS), the received at least one DL signal comprising: at least one DL PRS, at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, wherein at least one measurement is performed based, at least in part, on the received at least one DL signal or the transmitted at least one UL PRS; and perform at least one adjustment for random access based, at least in part, on the at least one measurement.

In an aspect of the disclosure, methods, computer-readable media, and apparatuses are provided. The apparatuses may be user equipment (UE) or a base station. Certain aspects of the present disclosure provide a method for wireless communication, performed by a wireless device, such as a user equipment (UE). The method generally includes: receiving at least one downlink (DL) signal from one or more base stations, wherein the received at least one DL signal comprises: at least one DL PRS, at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof; processing the at least one DL PRS, or the at least one PRS and at least one of the: at least one SSB, at least one SIB, or a master information block (MIB); performing at least one measurement for at least one of a pathloss or a propagation delay to at least one serving base station of the one of more base stations, based, at least in part, on the processing; and performing at least one adjustment for random access based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide an apparatus for wireless communication. The apparatus may be a UE and may generally include at least one processor, memory coupled (electronically, operatively, communicatively, or otherwise) to the at least one processor, the memory comprising instructions executable (e.g., directly, or after compiling, converting, interpreting, etc.) by the at least one processor to cause the apparatus to: receive at least one downlink (DL) signal from one or more base stations, wherein the received at least one DL signal comprises: at least one DL PRS, at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof; process the at least one DL PRS, or the at least one PRS and at least one of the: at least one SSB, at least one SIB, or a master information block (MIB); perform at least one measurement for at least one of a pathloss or a propagation delay to at least one serving base station of the one of more base stations, based, at least in part, on the processing; and perform at least one adjustment for random access based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide for an apparatus for wireless communication. The apparatus may be a UE and may generally include: means for receiving at least one downlink (DL) signal from one or more base stations, wherein the received at least one DL signal comprises: at least one DL PRS, at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof; processing the at least one DL PRS, or the at least one PRS and at least one of the: at least one SSB, at least one SIB, or a master information block (MIB); performing at least one measurement for at least one of a pathloss or a propagation delay to at least one serving base station of the one of more base stations, based, at least in part, on the processing; and performing at least one adjustment for random access based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide for a computer-readable medium for wireless communication by a wireless device, such as a UE. The computer-readable medium generally includes code, which when executed (e.g., directly, or after compiling, converting, interpreting, etc.) by at least one processor, causes the UE to: receive at least one downlink (DL) signal from one or more base stations, wherein the received at least one DL signal comprises: at least one DL PRS, at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof; process the at least one DL PRS, or the at least one PRS and at least one of the: at least one SSB, at least one SIB, or a master information block (MIB); perform at least one measurement for at least one of a pathloss or a propagation delay to at least one serving base station of the one of more base stations, based, at least in part, on the processing; and perform at least one adjustment for random access based, at least in part, on the at least one measurement.

In an aspect of the disclosure, methods, computer-readable media, and apparatuses are provided. The apparatuses may be user equipment (UE) or a base station. Certain aspects of the present disclosure provide a method for wireless communication, performed by a wireless device, such as a user equipment (UE). The method generally includes: receiving at least one downlink (DL) signal from one or more base stations, wherein the received at least one DL signal comprises: at least one DL positioning reference signal (PRS), at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, the one or more base stations comprising at least one serving base station, or at least one serving base station and at least one neighbor base station, the at least one DL PRS comprising a cell identification (ID) associated with a base station, of the one or more base stations, from which the at least one DL PRS is received, wherein receiving the at least one DL PRS comprises detecting and processing the at least one DL PRS when the UE is in an idle state, an inactive state, or a connected state, wherein the at least one DL PRS has a corresponding cell-specific configuration, and wherein an association between each cell ID and its corresponding cell-specific configuration is determined by a network comprising at least one of the one or more base stations; performing at least one measurement based, at least in part, on the received at least one DL signal; and performing at least one adjustment for random access based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide an apparatus for wireless communication. The apparatus may be a UE and may generally include at least one processor, memory coupled (electronically, operatively, communicatively, or otherwise) to the at least one processor, the memory comprising instructions executable (e.g., directly, or after compiling, converting, interpreting, etc.) by the at least one processor to cause the apparatus to: receive at least one downlink (DL) signal from one or more base stations, wherein the received at least one DL signal comprises: at least one DL positioning reference signal (PRS), at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, the one or more base stations comprising at least one serving base station, or at least one serving base station and at least one neighbor base station, the at least one DL PRS comprising a cell identification (ID) associated with a base station, of the one or more base stations, from which the at least one DL PRS is received, wherein receiving the at least one DL PRS comprises detecting and processing the at least one DL PRS when the UE is in an idle state, an inactive state, or a connected state, wherein the at least one DL PRS has a corresponding cell-specific configuration, and wherein an association between each cell ID and its corresponding cell-specific configuration is determined by a network comprising at least one of the one or more base stations; perform at least one measurement based, at least in part, on the received at least one DL signal; and perform at least one adjustment for random access based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide for an apparatus for wireless communication. The apparatus may be a UE and may generally include: means for receiving at least one downlink (DL) signal from one or more base stations, wherein the received at least one DL signal comprises: at least one DL positioning reference signal (PRS), at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, the one or more base stations comprising at least one serving base station, or at least one serving base station and at least one neighbor base station, the at least one DL PRS comprising a cell identification (ID) associated with a base station, of the one or more base stations, from which the at least one DL PRS is received, wherein receiving the at least one DL PRS comprises detecting and processing the at least one DL PRS when the UE is in an idle state, an inactive state, or a connected state, wherein the at least one DL PRS has a corresponding cell-specific configuration, and wherein an association between each cell ID and its corresponding cell-specific configuration is determined by a network comprising at least one of the one or more base stations; means for performing at least one measurement based, at least in part, on the received at least one DL signal; and means for performing at least one adjustment for random access based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide for a computer-readable medium for wireless communication by a wireless device, such as a UE. The computer-readable medium generally includes code, which when executed (e.g., directly, or after compiling, converting, interpreting, etc.) by at least one processor, causes the UE to: receive at least one downlink (DL) signal from one or more base stations, wherein the received at least one DL signal comprises: at least one DL positioning reference signal (PRS), at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, the one or more base stations comprising at least one serving base station, or at least one serving base station and at least one neighbor base station, the at least one DL PRS comprising a cell identification (ID) associated with a base station, of the one or more base stations, from which the at least one DL PRS is received, wherein receiving the at least one DL PRS comprises detecting and processing the at least one DL PRS when the UE is in an idle state, an inactive state, or a connected state, wherein the at least one DL PRS has a corresponding cell-specific configuration, and wherein an association between each cell ID and its corresponding cell-specific configuration is determined by a network comprising at least one of the one or more base stations; perform at least one measurement based, at least in part, on the received at least one DL signal; and perform at least one adjustment for random access based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide a method for wireless communication, performed by a wireless device, such as a base station (BS). The method generally includes: transmitting at least one downlink (DL) signal to a user equipment (UE) or receiving at least one uplink (UL) positioning reference signal (PRS) from the UE, the transmitted at least one DL signal comprising: at least one positioning reference signal (PRS), at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, wherein at least one measurement is performed based, at least in part, on the at least one DL signal or the at least one UL PRS, and wherein the UE performs at least one adjustment for random access with the BS based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide an apparatus for wireless communication. The apparatus may be a BS and may generally include at least one processor, memory coupled (electronically, operatively, communicatively, or otherwise) to the at least one processor, the memory comprising instructions executable (e.g., directly, or after compiling, converting, interpreting, etc.) by the at least one processor to cause the apparatus to: transmit at least one downlink (DL) signal to a user equipment (UE) or receiving at least one uplink (UL) positioning reference signal (PRS) from the UE, the transmitted at least one DL signal comprising: at least one positioning reference signal (PRS), at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, wherein at least one measurement is performed based, at least in part, on the at least one DL signal or the at least one UL PRS, and wherein the UE performs at least one adjustment for random access with the BS based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide for an apparatus for wireless communication. The apparatus may be a BS and may generally include: means for transmitting at least one downlink (DL) signal to a user equipment (UE) or receiving at least one uplink (UL) positioning reference signal (PRS) from the UE, the transmitted at least one DL signal comprising: at least one positioning reference signal (PRS), at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, wherein at least one measurement is performed based, at least in part, on the at least one DL signal or the at least one UL PRS, and wherein the UE performs at least one adjustment for random access with the BS based, at least in part, on the at least one measurement.

Certain aspects of the present disclosure provide for a computer-readable medium for wireless communication by a wireless device, such as a BS. The computer-readable medium generally includes code, which when executed (e.g., directly, or after compiling, converting, interpreting, etc.) by at least one processor, causes the BS to: transmit at least one downlink (DL) signal to a user equipment (UE) or receiving at least one uplink (UL) positioning reference signal (PRS) from the UE, the transmitted at least one DL signal comprising: at least one positioning reference signal (PRS), at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, wherein at least one measurement is performed based, at least in part, on the at least one DL signal or the at least one UL PRS, and wherein the UE performs at least one adjustment for random access with the BS based, at least in part, on the at least one measurement.

To the accomplishment of the foregoing and related ends, the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed, and this description is intended to include all such aspects and their equivalents.

