This disclosure provides systems, methods and apparatus, for measurement and reporting procedures associated with a sidelink positioning reference signal (SL-PRS). In one aspect, a first user equipment (UE), which may function as a sidelink anchor node, may transmit an SL-PRS to a second UE in accordance with a slot format or structure that is dedicated for SL-PRS transmissions. The first UE may select resources for the transmission of the SL-PRS via sensing and exclusion or using a set of resources that are dedicated for SL-PRS transmissions. The second UE may receive the SL-PRS and use the SL-PRS to acquire positioning information, in accordance with an observed time difference of arrival (OTDOA)-based positioning method, or may transmit a second SL-PRS to the first UE to facilitate acquisition of positioning information at the first UE, in accordance with a round-trip-time (RTT)-based positioning method.

Techniques are described for supporting satellite wireless access for a user equipment (UE) using fixed tracking areas (TAs). TA identities (TAIs) are broadcast in a satellite radio cell by a base station indicating which TAs are covered by the radio cell. A UE can access a radio cell if at least one broadcast TAI is not forbidden for the UE. A base station provides the TAIs broadcast in a radio cell and a TAI for a TA in which a UE is located to a core network node to support access by the UE. The core network node uses the broadcast TAIs to decide whether UE access is allowed and uses the broadcast TAIs and the TAI to assign a UE registration area. The UE may transfer all the broadcast TAIs to a forbidden TAI list if UE access is rejected by the core network node.

Techniques are described for supporting satellite wireless access for a user equipment (UE) using fixed tracking areas (TAs). TA identities (TAIs) are broadcast in a satellite radio cell by a base station indicating which TAs are covered by the radio cell. A UE can access a radio cell if at least one broadcast TAI is not forbidden for the UE. A base station provides the TAIs broadcast in a radio cell and a TAI for a TA in which a UE is located to a core network node to support access by the UE. The core network node uses the broadcast TAIs to decide whether UE access is allowed and uses the broadcast TAIs and the TAI to assign a UE registration area. The UE may transfer all the broadcast TAIs to a forbidden TAI list if UE access is rejected by the core network node.

A method and apparatus for transmitting positioning information in sidelink communication system is provided. A first wireless device determines positioning information of the first wireless device based on a position of the first wireless device. A first wireless device split the positioning information into first positioning information and second positioning information. A first wireless device transmits, to a second wireless device, the first positioning information via sidelink control information (SCI). A first wireless device transmits, to the second wireless device, the second positioning information via a data unit.

A method and apparatus for transmitting positioning information in sidelink communication system is provided. A first wireless device determines positioning information of the first wireless device based on a position of the first wireless device. A first wireless device split the positioning information into first positioning information and second positioning information. A first wireless device transmits, to a second wireless device, the first positioning information via sidelink control information (SCI). A first wireless device transmits, to the second wireless device, the second positioning information via a data unit.

Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives, from a serving transmission-reception point (TRP), downlink control information (DCI) triggering the UE to measure positioning reference signals (PRS), wherein a code point in the DCI is associated with one or more PRS resources, one or more PRS resource sets, one or more positioning frequency layers, or one or more TRPs, and measures PRS transmitted on the one or more PRS resources, the one or more PRS resource sets, the one or more positioning frequency layers, or the one or more TRPs.

A communication unit includes: a plurality of wireless communication units configured to perform wireless communication with another communication device; and a control unit configured to estimate a relative position of the other communication device relative to the communication unit, wherein the control unit estimates the relative position of the other communication device on the basis of a plurality of distance measurement values indicating a distance between each of the plurality of wireless communication units and the other communication device obtained by each of the plurality of wireless communication units performing wireless communication with the other communication device, and a position characteristic including a position of each of the plurality of wireless communication units in the communication unit.

A communication method and an apparatus. The method includes: a terminal device receives measurement configuration information from a first network device, where the measurement configuration information indicates the terminal device to measure a first cell. The terminal device sends a measurement result to a second network device, where the measurement result is obtained by the terminal device by measuring the first cell based on the measurement configuration information, and the measurement result indicates that the terminal device obtains a signal of the first cell through measurement or does not obtain a signal of the first cell through measurement. Based on the indication, of the measurement result, that the terminal device obtains the signal of the first cell through measurement or does not obtain the signal of the first cell through measurement, whether coverage of the first cell needs to be corrected may be further determined.

A communication method and an apparatus. The method includes: a terminal device receives measurement configuration information from a first network device, where the measurement configuration information indicates the terminal device to measure a first cell. The terminal device sends a measurement result to a second network device, where the measurement result is obtained by the terminal device by measuring the first cell based on the measurement configuration information, and the measurement result indicates that the terminal device obtains a signal of the first cell through measurement or does not obtain a signal of the first cell through measurement. Based on the indication, of the measurement result, that the terminal device obtains the signal of the first cell through measurement or does not obtain the signal of the first cell through measurement, whether coverage of the first cell needs to be corrected may be further determined.

Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) performs a plurality of positioning measurements of a plurality of positioning reference signals (PRS) transmitted by at least one network node, transmits a first physical layer message having a fixed payload size, wherein the first physical layer message includes at least an indication of a type, a number, or both of a first set of positioning measurements of the plurality of positioning measurements to be included in a second physical layer message having a variable payload size, and transmits the second physical layer message having the variable payload size, wherein the second physical layer message includes at least the first set of positioning measurements, and wherein the variable payload size of the second physical layer message is based at least on the type, the number, or both of the first set of positioning measurements.