Association of Sounding Reference Signal (SRS) with Multiple Frequency-Interleaved Random Access Channel (RACH) Resources

Abstract

Technologies for wireless communication are disclosed. In one aspect, a user equipment (UE) receives a configuration of a sounding reference signal (SRS) resource or an SRS resource set during a first state, obtains an association relationship between the SRS resource or the SRS resource set and a group of random access channel (RACH) resources, and sends a group of RACH signals using a transmission attribute based on the association relationship between the SRS resource or the SRS resource set and the group of RACH resources when outside the first state, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple time resources.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to Greek patent application "Association of Sounding Reference Signal (SRS) with Multiple Frequency Domain Interleaved Random Access Channel (RACH) Resources" with application number 20190100544 filed on December 5, 2019, which has been assigned to the assignee of this application, and the entire content of which is expressly incorporated herein by reference. Background Art 1. Technical Field

[0004] Aspects of the present disclosure generally relate to wireless communications.

[0005] 2. Related technologies

[0006] Wireless communication systems have evolved over several generations, including first generation analog wireless telephone service (1G), second generation (2G) digital wireless telephone service (including transitional 2.5G and 2.75G networks), third generation (3G) high speed data, networkable wireless services, and fourth generation (4G) services (e.g., Long Term Evolution (LTE) or WiMax). There are many different types of wireless communication systems in use today, including cellular systems and personal communications service (PCS) systems. Examples of well-known cellular systems include the cellular analog Advanced Mobile Phone System (AMPS), and digital cellular systems based on code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), Global System for Mobile Communications (GSM), and the like.

[0007] The fifth generation (5G) mobile standard, also known as New Radio (NR), calls for higher data speeds, more connections, and better coverage, among other improvements. According to the Next Generation Mobile Networks Alliance, the 5G standard is designed to provide data rates of tens of megabits per second for each of tens of thousands of users and 1 gigabit per second for workers in an office building. To support large sensor deployments, hundreds of thousands of simultaneous connections should be supported. As a result, the spectrum efficiency of 5G mobile communications should be significantly improved compared to the current 4G standard. In addition, signaling efficiency should be improved and latency should be greatly reduced compared to the current standard. Summary of the invention

[0008] This summary illustrates features of some example aspects, but is not an exclusive or exhaustive description of the disclosed subject matter. The inclusion or omission of features or aspects in this summary is not intended to indicate the relative importance of those features. Additional features and aspects are described and will become apparent to those skilled in the art upon reading the following detailed description and viewing the accompanying drawings, which form a part thereof.

[0009] In one aspect, a wireless communication method performed by a user equipment (UE) includes: receiving a configuration of a sounding reference signal (SRS) resource or an SRS resource set during a first state; obtaining an association relationship between the SRS resource or the SRS resource set and a group of random access channel (RACH) resources; and, outside the first state, sending a group of RACH signals using a transmission attribute based on the association relationship between the SRS resource or the SRS resource set and the group of RACH resources, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple time resources.

[0010] In one aspect, a wireless communication method performed by a transmit reception point (TRP) includes: receiving an SRS on an SRS resource or an SRS resource set from a UE; and receiving a group of RACH signals from the UE, the group of RACH signals having a transmission attribute based on an association relationship between the SRS resource or the SRS resource set and a group of RACH resources receiving the group of RACH signals, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple time resources.

[0011] In one aspect, a UE includes: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to: receive a configuration of an SRS resource or an SRS resource set during a first state; obtain an association relationship between the SRS resource or the SRS resource set and a group of RACH resources; and, outside the first state, send a group of RACH signals using a transmission attribute based on the association relationship between the SRS resource or the SRS resource set and the group of RACH resources, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple time resources.

[0012] In one aspect, a TRP includes: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to: receive an SRS on an SRS resource or an SRS resource set from a UE; and, receive a group of RACH signals from the UE, the group of RACH signals having transmission properties based on an association relationship between the SRS resource or the SRS resource set and a group of RACH resources for receiving the group of RACH signals, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple time resources.

[0013] In one aspect, a UE includes: a component for receiving a configuration of an SRS resource or an SRS resource set during a first state; a component for obtaining an association relationship between the SRS resource or the SRS resource set and a group of RACH resources; and a component for sending a group of RACH signals using a transmission attribute based on the association relationship between the SRS resource or the SRS resource set and the group of RACH resources when outside the first state, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple time resources.

[0014] In one aspect, a TRP includes: a component for receiving an SRS on an SRS resource or an SRS resource set from a UE; and a component for receiving a group of RACH signals from the UE, the RACH signals having transmission properties based on an association relationship between the SRS resource or the SRS resource set and a group of RACH resources for receiving the group of RACH signals, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple time resources.

[0015] In one aspect, a non-transitory computer-readable medium stores computer-executable instructions, which include: at least one instruction instructing a UE to receive a configuration of an SRS resource or an SRS resource set during a first state; at least one instruction instructing the UE to obtain an association relationship between the SRS resource or the SRS resource set and a group of RACH resources; and at least one instruction instructing the UE to send a group of RACH signals outside the first state using transmission attributes based on the association relationship between the SRS resource or the SRS resource set and the group of RACH resources, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple time resources.

[0016] In one aspect, a non-transitory computer-readable medium stores computer-executable instructions, which include: at least one instruction instructing a TRP to receive an SRS on an SRS resource or an SRS resource set from a UE; and at least one instruction instructing the TRP to receive a group of RACH signals from the UE, the group of RACH signals having transmission properties based on an association relationship between the SRS resource or the SRS resource set and a group of RACH resources for receiving the group of RACH signals, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple time resources.

[0017] Other objects and advantages associated with the various aspects disclosed herein will become apparent to those skilled in the art based on the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are presented to aid in describing various aspects of the disclosure and are provided solely for the purpose of illustrating these aspects and not limiting these aspects.

[0019] Figure 1 An example wireless communication system is illustrated in accordance with various aspects of the present disclosure.

[0020] Figure 2A and Figure 2B An example wireless network structure is illustrated in accordance with various aspects of the present disclosure.

[0021] FIG. 3A to FIG. 3C is a simplified block diagram of several sample aspects of components that may be respectively applicable in a UE, a base station, and a network entity and configured to support communications as described herein.

[0022] Figure 4A and Figure 4B is a schematic diagram illustrating examples of frame structures and channels within the frame structures according to aspects of the present disclosure.

[0023] Figure 5 and Figure 6 An example random access procedure is illustrated in accordance with aspects of the present disclosure.

[0024] Figure 7 Different RRC states in a NR according to aspects of the present disclosure are illustrated.

[0025] Figure 8 is a schematic diagram of an example positioning process between a UE and two TRPs according to various aspects of the present disclosure.

[0026] Fig. 9 is a chart illustrating different preamble lengths and formats.

[0027] Fig.10 is a schematic diagram of an example allocation of RACH instants (RO) in the time domain.

[0028] FIG. 11A to FIG. 11D Various examples of RO allocation in the time domain and the frequency domain are illustrated.

[0029] Fig.12 is a schematic diagram of an example positioning session between a UE and two TRPs according to various aspects of the present disclosure.

[0030] FIG. 13A to FIG. 13C is a schematic diagram of an example configuration of a RO according to aspects of the present disclosure.

[0031] Fig.14 and Fig.15 An example wireless communication method is illustrated in accordance with aspects of the present disclosure. DETAILED DESCRIPTION

[0032] Various aspects of the present disclosure are provided below in the description of each example provided for illustrative purposes and in the related drawings. Alternative aspects can be imagined without departing from the scope of the present disclosure. In addition, the known elements of the present disclosure will not be described in detail or will be omitted to avoid confusing the relevant details of the present disclosure.

[0033] The words "exemplary" and / or "example" are used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" and / or "example" is not necessarily to be construed as preferred or advantageous over other aspects. Likewise, the term "aspects of the disclosure" does not require that all aspects of the disclosure include the discussed feature, advantage, or mode of operation.

[0034] Those skilled in the art should understand that the information and signals described below may be represented using any of a variety of different techniques and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned in the following description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof, which depends in part on the specific application, in part on the desired design, in part on the corresponding technology, etc.

[0035] Further, many aspects are described in terms of an order of actions performed, for example, by elements of a computing device. It should be appreciated that the various actions described herein may be performed by specific circuits (e.g., an application specific integrated circuit (ASIC)), or may be performed by program instructions executed by one or more processors, or may be performed by a combination of the two. In addition, the order of actions described herein may be viewed as being fully embodied in any form of non-transitory computer-readable storage medium storing a set of corresponding computer instructions that, when executed, cause or instruct the associated processor of the device to perform the functions described herein. Thus, various aspects of the present disclosure may be embodied in a variety of different forms, all of which are considered to be within the scope of the claimed subject matter. In addition, for each aspect described herein, the corresponding form of any of these aspects may be described herein as, for example, "logic" that is "configured to" perform the described actions.

[0036] The terms "user equipment" (UE) and "base station" as used herein are not intended to be specific to or limited to any particular radio access technology (RAT), unless otherwise specified. Generally, a UE can be any wireless communication device (e.g., a mobile phone, a router, a tablet computer, a laptop computer, a tracking device, a wearable device (e.g., a smart watch, glasses, augmented reality (AR) / virtual reality (VR) headsets, etc.), a vehicle (e.g., a car, a motorcycle, a bicycle, etc.), an Internet of Things (IoT) device, etc.) used by a user to communicate over a wireless communication network. The UE can be mobile or can be fixed (e.g., at certain times) and can communicate with a radio access network (RAN). The term "UE" as used herein can be interchangeably referred to as an "access terminal" or "AT", "client device", "wireless device", "subscriber device", "subscriber terminal", "subscriber station", "user terminal" or UT, "mobile device", "mobile terminal", "mobile station" or variations thereof. Generally, a UE can communicate with a core network via a RAN, and the UE can be connected to external networks such as the Internet and other UEs through the core network. Of course, other mechanisms are also possible for the UE to connect to the core network and / or the Internet, such as through a wired access network, a wireless local area network (WLAN) network (eg, based on IEEE 802.11, etc.), etc.

[0037] Depending on the network in which the base station is deployed, the base station may operate according to one of several RATs communicating with the UE, and may be alternatively referred to as an access point (AP), a network node, a Node B, an evolved Node B (eNB), a next generation eNB (ng-eNB), a new radio (NR) Node B (also referred to as a gNB or gNodeB), etc. The base station may be primarily used to support wireless access for the UE, including supporting data, voice and / or signaling connections for the supported UE. In some systems, the base station may provide pure edge node signaling functions; while in other systems, the base station may provide additional control and / or network management functions. The communication link through which the UE may send a signal to the base station is called an uplink (UL) channel (e.g., a reverse traffic channel, a reverse control channel, an access channel, etc.). The communication link through which the base station may send a signal to the UE is called a downlink (DL) or forward link channel (e.g., a paging channel, a control channel, a broadcast channel, a forward traffic channel, etc.). The term traffic channel (TCH) as used herein may refer to a UL / reverse or DL / forward traffic channel.

[0038] The term "base station" may refer to a single physical transmit-receive point (TRP) or multiple physical TRPs that may or may not be co-located. For example, where the term "base station" refers to a single physical TRP, the physical TRP may be an antenna of the base station corresponding to a cell (or several cell sectors) of the base station. Where the term "base station" refers to multiple co-located physical TRPs, the physical TRP may be an antenna array of the base station (e.g., as in a multiple-input multiple-output (MIMO) system or where the base station employs beamforming). Where the term "base station" refers to multiple non-co-located physical TRPs, the physical TRP may be a distributed antenna system (DAS) (a network of spatially separated antennas connected to a common source via a transmission medium) or a remote radio head (RRH) (a remote base station connected to a serving base station). Alternatively, the non-co-located physical TRP may be a serving base station that receives measurement reports from a UE and an adjacent base station whose reference RF signal the UE is measuring. Because a TRP is a point at which a base station transmits and receives wireless signals, references to transmissions from a base station or receptions at a base station as used herein should be understood as reference to a specific TRP of a base station.

[0039] In some embodiments of supporting UE positioning, the base station may not support wireless access of the UE (e.g., may not support data, voice and / or signaling connections of the UE), but may send a reference signal to the UE for measurement by the UE, and / or may receive and measure a signal sent by the UE. Such a base station may be referred to as a positioning beacon (e.g., when sending a signal to the UE) and / or a position measurement unit (e.g., when receiving and measuring a signal from the UE).

[0040] An "RF signal" includes an electromagnetic wave of a given frequency that transmits information through the space between a transmitter and a receiver. As used herein, a transmitter may transmit a single "RF signal" or multiple "RF signals" to a receiver. However, due to the propagation characteristics of RF signals through multipath channels, a receiver may receive multiple "RF signals" corresponding to each transmitted RF signal. The same transmitted RF signal on different paths between a transmitter and a receiver may be referred to as a "multipath" RF signal.

[0041] According to various aspects, Figure 1An example wireless communication system 100 is illustrated. The wireless communication system 100 (which may also be referred to as a wireless wide area network (WWAN)) may include various base stations 102 and various UEs 104. The base stations 102 may include macro cell base stations (high power cellular base stations) and / or small cell base stations (low power cellular base stations). In one aspect, the macro cell base station may include an eNB and / or ng-eNB corresponding to an LTE network of the wireless communication system 100, or a gNB corresponding to an NR network of the wireless communication system 100, or a combination of the two, and the small cell base station may include a femto cell, a pico cell, a micro cell, etc.

[0042] The base stations 102 may collectively form a RAN and may interface with a core network 170 (e.g., an evolved packet core (EPC) or a 5G core (5GC)) via a backhaul link 122 and may interface with one or more location servers 172 (which may be part of the core network 170 or may be located external to the core network 170) via the core network 170. The base stations 102 may perform, among other functions, functions related to one or more of delivering user data, wireless channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection setup and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, RAN sharing, multimedia broadcast multicast service (MBMS), subscriber and device tracking, RAN information management (RIM), paging, positioning, and delivering warning messages. The base stations 102 may communicate with each other directly or indirectly (e.g., via EPC / 5GC) over a backhaul link 134 (which may be wireless or wired).

[0043] Base stations 102 may communicate wirelessly with UEs 104. Each base station 102 may provide communication coverage for a respective geographic coverage area 110. In one aspect, one or more cells may be supported by a base station 102 in each coverage area 110. A "cell" is a logical communication entity used to communicate with a base station (e.g., on certain frequency resources, also referred to as carrier frequencies, component carriers, carriers, frequency bands, etc.), and may be associated with an identifier (e.g., a physical cell identifier (PCI), a virtual cell identifier (VCI), a cell global identifier (CGI)) used to distinguish cells operating via the same or different carrier frequencies. In some cases, different cells may be configured according to different protocol types (e.g., machine type communication (MTC), narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB), etc.) that may provide access to different types of UEs. Because a cell is supported by a specific base station, the term "cell" may refer to one or both of a logical communication entity and a base station that supports the cell, depending on the context. In some cases, the term "cell" may also refer to a geographic coverage area (eg, a sector) of a base station, as long as a carrier frequency can be detected and used for communications within some portion of the geographic coverage area 110.

[0044] Although the geographic coverage areas 110 of adjacent macrocell base stations 102 may partially overlap (e.g., in a handoff region), some geographic coverage areas 110 may be substantially overlapped by a larger geographic coverage area 110. For example, a small cell base station 102' may have a coverage cell 110' that substantially overlaps with the coverage area 110 of one or more macrocell base stations 102. A network including small cell and macrocell base stations may be referred to as a heterogeneous network. A heterogeneous network may also include a home eNB (HeNB) that may provide service to a restricted group known as a closed subscriber group (CSG).

[0045] The communication link 120 between the base station 102 and the UE 104 may include UL (also referred to as a reverse link) transmissions from the UE 104 to the base station 102 and / or downlink (DL) (also referred to as a forward link) transmissions from the base station 102 to the UE 104. The communication link 120 may use MIMO antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link 120 may be over one or more carrier frequencies. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​than for UL).

[0046] The wireless communication system 100 may also include a wireless local area network (WLAN) access point (AP) 150 that communicates with a WLAN station (STA) 152 in an unlicensed spectrum (e.g., 5 GHz) via a communication link 154. When communicating in the unlicensed spectrum, the WLAN STA 152 and / or the WLAN AP 150 may perform a clear channel assessment (CCA) or a listen-before-talk (LBT) process to determine whether a channel is available before communicating.

[0047] The small cell base station 102' can operate in licensed and / or unlicensed spectrum. When operating in the unlicensed spectrum, the small cell base station 102' can adopt LTE or NR technology and use the same 5GHz unlicensed spectrum used by the WLAN AP 150. The small cell base station 102' adopting LTE / 5G in the unlicensed spectrum can expand the coverage to the access network and / or increase the capacity of the access network. NR in the unlicensed spectrum can be referred to as NR-U. LTE in the unlicensed spectrum can be referred to as LTE-U, Licensed Assisted Access (LAA) or MulteFire.

[0048] The wireless communication system 100 may also include a millimeter wave (mmW) base station 180, which can operate at millimeter wave frequencies and / or near millimeter wave frequencies to communicate with UE 182. Extremely high frequency (EHF) is part of RF in the electromagnetic wave spectrum. The range of EHF is 30GHz to 300GHz, and the wavelength is between 1 mm and 10 mm. Radio waves in this frequency band can be called millimeter waves. Near mmW can extend down to 3GHz frequencies with a wavelength of 100 mm. The super high frequency (SHF) band extends between 3GHz and 30GHz, also known as centimeter waves. Communications using mmW / near mmW radio frequencies have high path losses and relatively short distances. The mmW base station 180 and the UE 182 can utilize beamforming (transmitting and / or receiving) on ​​the mmW communication link 184 to compensate for extremely high path losses and short distances. Further, it should be understood that in an alternative configuration, one or more base stations 102 may also transmit using mmW or near mmW and beamforming. Therefore, it should be understood that the above description is only examples, and should not be construed as limiting the various aspects disclosed herein.

[0049] Transmit beamforming is a technique for focusing an RF signal in a specific direction. Traditionally, when a network node (e.g., a base station) broadcasts an RF signal, the network node broadcasts the signal in all directions (omnidirectionally). With transmit beamforming, the network node determines where a given target device (e.g., a UE) is located (relative to the transmitting network node) and projects a stronger downlink RF signal in that specific direction, thereby providing a faster (in terms of data rate) and stronger RF signal to the receiving device. In order to change the directionality of the RF signal when transmitting, the network node can control the phase and relative amplitude of the RF signal at each of the one or more transmitters that are broadcasting the RF signal. For example, the network node can use an antenna array (also called a "phased array" or "antenna array") that produces RF beams that can be "steered" to point in different directions without actually moving the antenna. Specifically, the RF current from the transmitter is fed to individual antennas with the correct phase relationship so that the radio waves from the independent antennas are added together to increase the radiation in the desired direction, while canceling out to suppress the radiation in the undesired direction.

[0050] The transmit beams can be quasi-co-located, meaning that they appear to have the same parameters to a receiver (e.g., a UE), regardless of whether the transmit antennas of the network nodes themselves are physically co-located. In NR, there are four types of quasi-co-location (QCL) relationships. Specifically, a given type of QCL relationship means that certain parameters about the target reference RF signal on the target beam can be derived from information about the source reference RF signal on the source beam. If the source reference RF signal is QCL type A, the receiver can use the source reference RF signal to estimate the Doppler shift, Doppler spread, average delay, and delay spread of the target reference RF signal sent on the same channel. If the source reference RF signal is QCL type B, the receiver can use the source reference RF signal to estimate the Doppler shift and Doppler spread of the target reference RF signal sent on the same channel. If the source reference RF signal is QCL type C, the receiver can use the source reference RF signal to estimate the Doppler shift and average delay of the target reference RF signal sent on the same channel. If the source reference RF signal is QCL type D, the receiver may use the source reference RF signal to estimate spatial reception parameters of a target reference RF signal transmitted on the same channel.

[0051] In receive beamforming, a receiver uses a receive beam to amplify an RF signal detected on a given channel. For example, a receiver may increase a gain setting and / or adjust a phase setting of an antenna array in a particular direction to amplify RF signals received from that direction (e.g., increase the gain level). Thus, when a receiver is referred to as performing beamforming in a certain direction, it means that the beam gain in that direction is high relative to the beam gains in other directions, or that the beam gain in that direction is the highest compared to the beam gains in that direction of all other receive beams available to the receiver. This results in a stronger received signal strength (e.g., reference signal received power (RSRP), reference signal received quality (RSRQ), signal-to-noise-and-interference ratio (SINR), etc.) for the RF signal received from that direction.

[0052] The receiving beam can be spatially correlated. Spatial correlation means that the parameters of the transmit beam of the second reference signal can be derived from the information about the receive beam of the first reference signal. For example, the UE can use a specific receive beam to receive one or more reference downlink reference signals (e.g., positioning reference signal (PRS), tracking reference signal (TRS), phase tracking reference signal (PTRS), cell-specific reference signal (CRS), channel state information reference signal (CSI-RS), primary synchronization signal (PSS), secondary synchronization signal (SSS), synchronization signal block (SSB), etc.) from a base station. Then, the UE can form a transmit beam for sending one or more uplink reference signals (e.g., uplink positioning reference signal (UL-PRS), sounding reference signal (SRS), demodulation reference signal (DMRS), PTRS, etc.) to the base station based on the parameters of the receive beam.

[0053] It is important to note that a "downlink" beam can be a transmit beam or a receive beam, depending on the entity forming the beam. For example, if the base station is forming a downlink beam that sends a reference signal to the UE, the downlink beam is a transmit beam. However, if the UE is forming a downlink beam, the downlink beam is a receive beam that receives a downlink reference signal. Similarly, an "uplink" beam can be a transmit beam or a receive beam, depending on the entity forming the beam. For example, if the base station is forming an uplink beam, the uplink beam is an uplink receive beam; if the UE is forming an uplink beam, the uplink beam is an uplink transmit beam.

[0054] In 5G, the spectrum in which wireless nodes (e.g., base stations 102 / 180, UEs 104 / 182) operate is divided into multiple frequency ranges: FR1 (from 450 to 6000 MHz), FR2 (from 24250 to 52600 MHz), FR3 (above 52600 MHz), and FR4 (between FR1 and FR2). In a multi-carrier system (such as 5G), one of the carrier frequencies is called the "primary carrier" or "anchor carrier" or "primary serving cell" or "PCell", and the remaining carrier frequencies are called "secondary carriers" or "secondary serving cells" or "Scells". In carrier aggregation, the anchor carrier is the carrier operating on the primary frequency (e.g., FR1) utilized by the UE 104 / 182 and the cell in which the UE 104 / 182 performs an initial radio resource control (RRC) connection establishment procedure or initiates an RRC connection reestablishment procedure. The primary carrier carries all common control channels and UE-specific control channels and can be a carrier in a licensed frequency (but not always). A secondary carrier is a carrier operating on a second frequency (e.g., FR2) that can be configured once an RRC connection is established between the UE 104 and the anchor carrier and can be used to provide additional radio resources. In some cases, the secondary carrier can be a carrier at an unlicensed frequency. The secondary carrier can contain only necessary signaling information and signals, for example, UE-specific signaling messages and signals may not be present in the secondary carrier, because the primary uplink and downlink carriers are generally UE-specific. This means that different UEs 104 / 182 in a cell can have different downlink primary carriers. The same is true for the uplink primary carrier. The network can change the primary carrier of any UE 104 / 182 at any time. For example, this is done to balance the load on different carriers. Because a "serving cell" (whether PCell or SCell) corresponds to a carrier frequency / component carrier with which a base station is communicating, the terms "cell", "serving cell", "component carrier", "carrier frequency", etc. can be used interchangeably.

[0055] For example, still referring to Figure 1 , one of the frequencies utilized by the macrocell base station 102 may be an anchor carrier (or "PCell"), while the other frequencies utilized by the macrocell base station 102 and / or the mmW base station 180 may be secondary carriers ("SCells"). The simultaneous transmission and / or reception of multiple carriers enables the UE 104 / 182 to significantly increase its data transmission and / or reception rate. For example, two 20 MHz aggregated carriers in a multi-carrier system theoretically increase the data rate by two times (i.e., 40 MHz) compared to the data rate achieved by a single 20 MHz carrier.

[0056] The wireless communication system 100 may also include a UE 164, which may communicate with the macrocell base station 102 via a communication link 120 and / or communicate with the mmW base station 180 via a mmW communication link 184. For example, the macrocell base station 102 may support a PCell and one or more SCells for the UE 164, and the mmW base station 180 may support one or more SCells for the UE 164.

[0057] The wireless communication system 100 may also include one or more UEs, such as UE 190, which are indirectly connected to one or more communication networks via one or more device-to-device (D2D) point-to-point (P2P) links (referred to as “sidelinks”). Figure 1 In the example of FIG. 1 , UE 190 has a D2D P2P link 192 with one of UEs 104 connected to one of base stations 102 (e.g., through this link, UE 190 can indirectly obtain a cellular connection), and a D2D P2P link 194 with a WLAN STA 152 connected to WLAN AP 150 (through this link, UE 190 can indirectly obtain a WLAN-based Internet connection). In one example, the D2D P2P links 192 and 194 can be supported by any well-known D2D RAT, such as LTE Direct (LTE-D), WiFi Direct (WiFi-D), wait.

[0058] According to various aspects, Figure 2AAn example wireless network structure 200 is illustrated. For example, 5GC 210 (also referred to as the next generation core network (NGC)) can be functionally considered as a control plane function 214 (e.g., UE registration, authentication, network access, gateway selection, etc.) and a user plane function 212 (e.g., UE gateway function, access data network, IP routing, etc.), and the control plane function 214 works in conjunction with the user plane function 212 to form a core network. The user plane interface (NG-U) 213 and the control plane interface (NG-C) 215 connect the gNB 222 to the 5GC 210, specifically to the control plane function 214 and the user plane function 212. In another configuration, the ng-eNB 224 can also be connected to the 5GC 210 via the NG-C 215 to the control plane function 214 and the NG-U 213 to the user plane function 212. Further, the ng-eNB 224 can communicate directly with the gNB 222 via the backhaul connection 223. In some configurations, the new RAN 220 may have only one or more gNBs 222, while other configurations include one or more ng-eNBs 224 and one or more gNBs 222. The gNB 222 or the ng-eNB 224 may communicate with the UE 204 (e.g., Figure 1 204). Another optional aspect may include a location server 230 that can communicate with the 5GC 210 to provide positioning assistance to the UE 204. The location server 230 can be implemented as multiple independent servers (e.g., physically independent servers, different software modules on a single server, different software modules on multiple physical servers, etc.), or alternatively, each can correspond to a single server. The location server 230 can be configured to support one or more positioning services for the UE 204, and the UE 204 can be connected to the location server 230 via the core network 5GC 210 and / or via the Internet (not shown). Further, the location server 230 can be integrated into a component of the core network, or alternatively, can be located outside the core network.

[0059] According to various aspects, Figure 2BAnother example wireless network structure 250 is illustrated. For example, the 5GC 260 can be functionally viewed as a control plane function provided by an access and mobility management function (AMF) 264 and a user plane function provided by a user plane function (UPF) 262, which work together to form a core network (i.e., 5GC 260). The user plane interface 263 and the control plane interface 265 connect the ng-eNB 224 to the 5GC 260, specifically to the UPF 262 and the AMF 264, respectively. In another configuration, the gNB 222 can also be connected to the 5GC 260 via a control plane interface 265 to the AMF 264 and a user plane interface 263 to the UPF 262. Further, the ng-eNB 224 can communicate directly with the gNB 222 via a backhaul connection 223, with or without a gNB direct connection to the 5GC 260. In some configurations, the new RAN 220 may have only one or more gNBs 222, while other configurations include one or more ng-eNBs 224 and one or more gNBs 222. The gNB 222 or the ng-eNB 224 may communicate with the UE 204 (e.g., Figure 1 The base stations of the new RAN 220 communicate with the AMF 264 via the N2 interface and with the UPF 262 via the N3 interface.

[0060] The functions of AMF 264 include registration management, connection management, reachability management, mobility management, lawful interception, transmission of session management (SM) messages between UE 204 and session management function (SMF) 266, transparent proxy service for routing SM messages, access authentication and access authorization, transmission of short message service (SMS) messages between UE 204 and short message service function (SMSF) (not shown), and security anchor function (SEAF). AMF 264 also interacts with authentication server function (AUSF) (not shown) and UE 204, and receives intermediate keys established as a result of the UE 204 authentication process. In the case of authentication based on UMTS (Universal Mobile Telecommunications System) Subscriber Identity Module (USIM), AMF 264 retrieves security information from AUSF. The functions of AMF 264 also include security environment management (SCM). SCM receives keys from SEAF and uses the keys to derive access network specific keys. The functions of AMF 264 also include location service management for regulatory services, transmission of location service messages between UE 204 and Location Management Function (LMF) 270 (acting as location server 230), transmission of location service messages between new RAN 220 and LMF 270, allocation of EPS bearer identifiers for interworking with Evolved Packet System (EPS), and notification of mobility events for UE 204. In addition, AMF 164 also supports functions for non-3GPP access networks.

[0061] The functions of UPF 262 include acting as an anchor point for intra-RAT / inter-RAT mobility (when applicable), acting as an external protocol data unit (PDU) session point for interconnecting with a data network (not shown), providing packet routing and forwarding, packet inspection, user plane policy rule enforcement (e.g., gating, redirection, traffic steering), lawful interception (user plane collection), traffic usage reporting, user plane quality of service (QoS) processing (e.g., UL / DL rate enforcement, reflective QoS marking in DL), UL traffic verification (mapping of service data flow (SDF) to QoS flow), transport layer packet marking in UL and DL, DL packet buffering and DL data notification triggering, and sending and forwarding one or more "end markers" to the source RAN node. UPF 262 can also support the delivery of location service messages between UE 204 and a location server over the user plane, such as a secure user plane location (SUPL) location platform (SLP) 272.

[0062] The functions of SMF 266 include session management, UE Internet Protocol (IP) address allocation and management, selection and control of user plane functions, configuring traffic steering at UPF 262 to route traffic to the appropriate destination, controlling partial policy enforcement and QoS, and downlink data notification. The interface through which SMF 266 communicates with AMF 264 is called the N11 interface.

[0063] Another optional aspect may include an LMF 270 that can communicate with the 5GC 260 to provide positioning assistance to the UE 204. The LMF 270 can be implemented as multiple independent servers (e.g., physically independent servers, different software modules on a single server, different software modules on multiple physical servers, etc.), or alternatively, each can correspond to a single server. The LMF 270 can be configured to support one or more positioning services for the UE 204, which can be connected to the LMF 270 via the core network 5GC 260 and / or via the Internet (not shown). The SLP 272 may support similar functionality as the LMF 270, but the LMF 270 may communicate with the AMF 264, the new RAN 220, and the UE 204 via a control plane (e.g., using interfaces and protocols intended to carry signaling messages but not voice or data), and the SLP 270 may communicate with the UE 204 and external clients (e.g., using protocols intended to carry voice and / or data, such as the Transmission Control Protocol (TCP) and / or IP) via a user plane (e.g., using protocols intended to carry voice and / or data, such as the Transmission Control Protocol (TCP) and / or IP). Figure 2B (not shown) communications.

[0064] Figure 3A , Figure 3B and Figure 3C Several example components (represented by corresponding boxes) are illustrated, which may be included in UE 302 (which may correspond to any UE described herein), base station 304 (which may correspond to any base station described herein), and network entity 306 (which may correspond to or embody any network function described herein, including location server 230 and LMF 270) to support file transfer operations as described herein. It should be understood that in different embodiments, these components may be implemented in different types of devices (e.g., in an ASIC, in a system on a chip (SoC), etc.). The illustrated components may also be included in other devices in the communication system. For example, other devices in the system may include components similar to the described components to provide similar functions. Moreover, a given device may include one or more of these components. For example, a device may include multiple transceiver components that enable the device to operate on multiple carriers and / or communicate via different technologies.

[0065] UE 302 and base station 304 each include a wireless wide area network (WWAN) transceiver 310 and 350 to provide means (e.g., means for transmitting, means for receiving, means for measuring, means for tuning, means for refraining from transmitting, etc.) for communicating via one or more wireless communication networks (not shown) (such as NR networks, LTE networks, and / or GSM networks, etc.). WWAN transceivers 310 and 350 may be connected to one or more antennas 316 and 356, respectively, to communicate with other network nodes (such as other UEs, access points, base stations (e.g., eNBs, gNBs), etc.) via at least one designated RAT (e.g., NR, LTE, GSM, etc.) over a wireless communication medium of interest (e.g., a certain set of time / frequency resources in a specific spectrum). Depending on the designated RAT, the WWAN transceivers 310 and 350 may be configured differently to transmit and encode signals 318 and 358 (e.g., messages, indications, information, etc.), respectively, and in turn receive and decode signals 318 and 358 (e.g., messages, indications, messages, pilots, etc.), respectively. Specifically, the WWAN transceivers 310 and 350 include one or more transmitters 314 and 354 for transmitting and encoding signals 318 and 358, respectively, and one or more receivers 312 and 352 for receiving and decoding signals 318 and 358, respectively.

[0066] At least in some cases, the UE 302 and the base station 340 also include wireless local area network (WLAN) transceivers 320 and 360, respectively. The WLAN transceivers 320 and 360 can be connected to one or more antennas 326 and 366, respectively, and provide for communication via at least one designated RAT (e.g., WiFi, LTE-D, Components (e.g., components for transmitting, components for receiving, components for measuring, components for tuning, components for refraining from transmitting, etc.) for communicating with other network nodes (such as other UEs, access points, base stations, etc.) over a wireless communication medium of interest. Depending on the specified RAT, the WLAN transceivers 320 and 360 can be configured differently to transmit and encode signals 328 and 368 (e.g., messages, indications, information, etc.), respectively, and in turn receive and decode signals 328 and 368 (e.g., messages, indications, messages, pilots, etc.), respectively. Specifically, the WLAN transceivers 320 and 360 include one or more transmitters 324 and 364 for transmitting and encoding signals 328 and 368, respectively, and one or more receivers 322 and 362 for receiving and decoding signals 328 and 368, respectively.

[0067] The transceiver circuitry including at least one transmitter and at least one receiver may include an integrated device (e.g., a transmitter circuit and a receiver circuit embodied as a single communication device) in some embodiments, may include a separate transmitter device and a separate receiver device in some embodiments, or may be embodied in other ways in other embodiments. In one aspect, the transmitter may include or be coupled to multiple antennas (e.g., antennas 316, 326, 356, 366), such as an antenna array that allows the corresponding device to perform transmit "beamforming", as described herein. Similarly, the receiver may include or be coupled to multiple antennas (e.g., antennas 316, 326, 356, 366), such as an antenna array that allows the corresponding device to perform receive beamforming, as described herein. In one aspect, the transmitter and receiver may share multiple identical antennas (e.g., antennas 316, 326, 356, 366) so that the corresponding device can only receive or transmit at a given time, but not simultaneously. The wireless communication devices of the UE 302 and / or the base station 304 (eg, one or both of the transceivers 310 and 320 and / or the transceivers 350 and 360) may also include a network listening module (NLM) or the like for performing various measurements.

[0068] At least in some cases, UE 302 and base station 304 also include satellite positioning system (SPS) receivers 330 and 370. SPS receivers 330 and 370 can be connected to one or more antennas 336 and 376, respectively, and can provide components for receiving and / or measuring SPS signals 338 and 376, respectively, such as global positioning system (GPS) signals, global navigation satellite system (GLONASS) signals, Galileo signals, Beidou signals, Indian regional navigation satellite system (NAVIC), Quasi-Zenith Satellite System (QZSS), etc. SPS receivers 330 and 370 can include any suitable hardware and / or software for receiving and processing SPS signals 338 and 378, respectively. SPS receivers 330 and 370 request information and operations from other systems as appropriate, and use measurements obtained by any suitable SPS algorithm to perform calculations required to determine the location of UE 302 and base station 304.

[0069] The base station 304 and the network entity 306 each include at least one network interface 380 and 390 to provide means for communicating with other network entities (e.g., means for sending, means for receiving, etc.). For example, the network interfaces 380 and 390 (e.g., one or more network access ports) can be configured to communicate with one or more network entities via a wired or wireless backhaul connection. In some aspects, the network interfaces 380 and 390 can be implemented as transceivers configured to support wired or wireless signal communication. For example, the communication can involve sending and receiving messages, parameters, and / or other types of information.

[0070] UE 302, base station 304, and network entity 306 also include other components that can be used in conjunction with the operations disclosed herein. UE 302 includes processor circuitry that implements a processing system 332 for providing functions related to, for example, wireless communications and for providing other processing functions. Base station 304 includes a processing system 384 for providing functions related to, for example, wireless communications as disclosed herein and for providing other processing functions. Network entity 306 includes a processing system 394 for providing functions related to, for example, wireless communications as disclosed herein and for providing other processing functions. Thus, processing systems 332, 384, and 394 can provide means for processing, such as means for determining, means for calculating, means for receiving, means for sending, means for indicating, and the like. In one aspect, for example, processing systems 332, 384, and 394 can include one or more general purpose processors, multi-core processors, ASICs, digital signal processors (DSPs), field programmable gate arrays (FPGAs), or other programmable logic devices or processing circuits.

[0071] UE 306, base station 304, and network entity 306 include memory circuits that implement memory components 340, 386, and 396 (e.g., each including a memory device) for maintaining information (e.g., information indicating reserved resources, thresholds, parameters, etc.). Thus, memory components 340, 386, and 396 can provide means for storing, means for retrieving, means for maintaining, etc. In some cases, UE 302, base station 304, and network entity 306 can include positioning components 342, 388, and 398, respectively. Positioning components 342, 388, and 398 can be hardware circuits that are part of or coupled to processing systems 332, 384, and 394, respectively, which, when executed, cause UE 302, base station 304, and network entity 306 to perform the functions described herein. In other aspects, the positioning components 342, 388, and 398 can be external to the processing systems 332, 384, and 394 (e.g., part of a modem processing system, integrated with another processing system, etc.). Alternatively, the positioning components 342, 388, and 398 can be memory modules stored in the memory components 340, 386, and 396, respectively, which when executed by the processing systems 332, 384, and 394 (or a modem processing system, another processing system, etc.), cause the UE 302, the base station 304, and the network entity 306 to perform the functions described herein. Figure 3A Possible locations are illustrated for positioning component 342, which may be part of WWAN transceiver 310, memory component 340, processing system 332, or any combination thereof, or may be a standalone component. Figure 3B Possible locations are illustrated for positioning component 388, which may be part of WWAN transceiver 350, memory component 386, processing system 384, or any combination thereof, or may be a stand-alone component. Figure 3C Possible locations for the location component 398 are illustrated, which may be part of the network interface 390, the memory component 396, the processing system 394, or any combination thereof, or may be a stand-alone component.

[0072] UE 302 may include one or more sensors 344 coupled to processing system 332 to provide components for sensing or detecting movement and / or orientation information that is independent of motion data derived from signals received from WWAN transceiver 310, WLAN transceiver 320, and / or SPS receiver 330. For example, sensor 344 may include an accelerometer (e.g., a microelectromechanical system (MEMS) device), a gyroscope, a geomagnetic sensor (e.g., a compass), an altimeter (e.g., a barometric altimeter), and / or any other type of motion detection sensor. In addition, sensor 344 may include multiple different types of devices and combine their outputs to provide motion information. For example, sensor 344 may use a combination of a multi-axis accelerometer and an orientation sensor to provide the ability to calculate a position in a 2D and / or 3D coordinate system.

[0073] In addition, UE 302 includes a user interface 346 to provide a means for providing indications (e.g., auditory and / or visual indications) to a user and / or receiving user input (e.g., after a user activates a sensing device such as a keypad, touch screen, microphone, etc.). Although not shown, base station 304 and network entity 306 may also include a user interface.

[0074] Referring to the processing system 384 in more detail, in the downlink, IP packets from the network entity 306 may be provided to the processing system 384. The processing system 384 may implement the functions of the RRC layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Medium Access Control (MAC) layer. The processing system 384 can provide RRC layer functions associated with broadcasting of system information (e.g., master information block (MIB), system information block (SIB)), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-RAT mobility, and measurement configuration of UE measurement reports; PDCP layer functions associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and switching support functions; RLC layer functions associated with transmission of upper layer PDUs, error correction through automatic repeat request (ARQ), concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with mapping between logical channels and transport channels, scheduling information reporting, error correction, priority handling, and logical channel priority sorting.

[0075] The transmitter 354 and the receiver 352 may implement layer 1 (L1) functions associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection of transmission channels, forward error correction (FEC) encoding / decoding of transmission channels, interleaving, rate matching, mapping to physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The transmitter 354 processes the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded modulation symbols may then be divided into parallel streams. Each stream may then be mapped to an orthogonal frequency division multiplexing (OFDM) subcarrier, multiplexed with a reference signal (e.g., pilot) in the time domain and / or frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM symbol stream is spatially precoded to produce multiple spatial streams. The channel estimate from the channel estimator may be used to determine the coding modulation scheme and spatial processing. The channel estimate may be derived from a reference signal and / or channel condition feedback sent by the UE 302. Each spatial stream may then be provided to one or more different antennas 356. The transmitter 354 may modulate the RF carrier with the corresponding spatial stream for transmission.

[0076] At the UE 302, the receiver 312 receives the signal through its corresponding antenna 316. The receiver 312 recovers the information modulated onto the RF carrier and provides the information to the processing system 332. The transmitter 314 and the receiver 312 implement layer 1 functions associated with various signal processing functions. The receiver 312 can perform spatial processing on the information to recover any spatial streams destined for the UE 302. If there are multiple spatial streams destined for the UE 302, these spatial streams can be combined into a single OFDM symbol stream by the receiver 312. The receiver 312 then converts the OFDM symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). The frequency domain signal includes an independent OFDM symbol stream for each subcarrier of the OFDM signal. By determining the most likely signal constellation point sent by the base station 304, the symbols and reference signals on each subcarrier are recovered and demodulated. These soft decisions can be based on the channel estimates calculated by the channel estimator. These soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent by the base station 304 on the physical channel. The data and control signals are then provided to the processing system 332, which implements layer 3 (L3) and layer 2 (L2) functions.

[0077] In the uplink, the processing system 332 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets from the core network. The processing system 332 is also responsible for error detection.

[0078] Similar to the functions described in conjunction with the downlink transmission of the base station 304, the processing system 332 provides RRC layer functions associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functions associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functions associated with transmission of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs on transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through hybrid automatic repeat request (HARQ), priority processing, and logical channel priority sorting.

[0079] Channel estimates derived by the channel estimator from a reference signal or feedback sent by the base station 304 may be used by the transmitter 314 to select an appropriate coding and modulation scheme to facilitate spatial processing. The spatial streams generated by the transmitter 314 may be provided to different antennas 316. The transmitter 314 may modulate an RF carrier with the corresponding spatial stream for transmission.

[0080] At the base station 304, the uplink transmission is processed in a manner similar to that described in conjunction with the receiver functionality at the UE 302. The receiver 352 receives the signal through its respective antenna 356. The receiver 352 recovers the information modulated onto the RF carrier and provides the information to the processing system 384.

[0081] In the uplink, the processing system 384 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets from the UE 302. The IP packets from the processing system 384 may be provided to the core network. The processing system 384 is also responsible for error detection.

[0082] For convenience, UE 302, base station 304 and / or network entity 306 may be configured to: FIG. 3A to FIG. 3C The schematic diagram of the embodiment of the present invention is shown as including various components that can be configured according to various examples described herein. However, it should be understood that the illustrated blocks may have different functions in different designs.

[0083] The various components of UE 302, base station 304, and network entity 306 may communicate with each other via data buses 334, 382, ​​and 392, respectively. FIG. 3A to FIG. 3C The components of can be implemented in various ways. In some embodiments, FIG. 3A to FIG. 3C The components may be implemented in one or more circuits, such as one or more processors and / or one or more ASICs (which may include one or more processors). Here, each circuit may use and / or include at least one memory component for storing information or executable code used by the circuit to provide the function. For example, some or all of the functions represented by blocks 310 to 346 may be implemented by the processor and memory components of UE 302 (e.g., by executing appropriate codes and / or by appropriate configuration of processor components). Similarly, some or all of the functions represented by blocks 350 to 388 may be implemented by the processor and memory components of base station 304 (e.g., by executing appropriate codes and / or by appropriate configuration of processor components). Moreover, some or all of the functions represented by blocks 390 to 398 may be implemented by the processor and memory components of network entity 306 (e.g., by executing appropriate codes and / or by appropriate configuration of processor components). For simplicity, various operations, actions and / or functions are described herein as being performed by "UE", "base station", "positioning entity", etc. However, it should be understood that these operations, actions and / or functions may actually be performed by specific components or combinations of components of the UE, base station, positioning entity, etc., such as processing systems 332, 384 and 394, transceivers 310, 320, 350 and 360, memory components 340, 386 and 396, positioning components 342, 388 and 398, etc.

[0084] Various frame structures may be used to support downlink and uplink transmissions between network nodes (eg, base stations and UEs). Figure 4A is a diagram 400 illustrating an example of an uplink frame structure in accordance with aspects of the present disclosure. Figure 4B is a diagram 430 illustrating an example of channels within an uplink frame structure according to aspects of the present disclosure. Other wireless communication technologies may have different frame structures and / or different channels.

[0085] LTE and in some cases NR utilize OFDM on the downlink and single carrier frequency division multiplexing (SC-FDM) on the uplink. However, unlike LTE, NR also has the option of using OFDM on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, bins, etc. Each subcarrier can be modulated with data. Typically, the modulated signal is sent in the frequency domain using OFDM and in the time domain using SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system bandwidth. For example, the spacing of the subcarriers can be 15 kilohertz (kHz), and the minimum resource allocation (resource block) can be 12 subcarriers (or 180kHz). Therefore, for system bandwidths of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), the nominal FFT size can be equal to 128, 256, 512, 1024, or 2048, respectively. The system bandwidth can also be divided into subbands. For example, one sub-band may cover 1.08 MHz (ie, 6 resource blocks), and for a system bandwidth of 1.25, 2.5, 5, 10 or 20 MHz, there may be 1, 2, 4, 8 or 16 sub-bands, respectively.

[0086] LTE supports a single numerology (subcarrier spacing, symbol length, etc.). In contrast, NR can support multiple numerologies (μ), for example, 15kHz, 30kHz, 60kHz, 120kHz, 240kHz or larger subcarrier spacing can be used. Table 1 provided below lists some of the different parameters of different NR numerologies.

[0087]

[0088] Table 1

[0089] exist Figure 4A and Figure 4BIn the example of , 15kHz numerology is used. Therefore, in the time domain, a 10 millisecond (ms) frame is divided into 10 equally sized 1ms subframes, and each subframe includes a time slot. FIG. 4A to FIG. 4B , time is represented horizontally (on the X-axis), where time increases from left to right; and frequency is represented vertically (on the Y-axis), where frequency increases (or decreases) from bottom to top.

[0090] A time slot can be represented using a resource grid, each of which includes one or more time-concurrent resource blocks (RBs) (also called physical RBs (PRBs)) in the frequency domain. The resource grid is further divided into multiple resource elements (REs). One RE can correspond to one symbol length in the time domain and one subcarrier in the frequency domain. Figure 4A and Figure 4B In numerology, for a normal cyclic prefix, one RB can contain 12 consecutive subcarriers in the frequency domain and 7 consecutive symbols in the time domain, for a total of 84 REs. For an extended cyclic prefix, one RB can contain 12 consecutive subcarriers in the frequency domain and 6 consecutive symbols in the time domain, for a total of 72 REs. The number of bits carried by each RE depends on the modulation scheme.

[0091] like Figure 4A As shown, some REs (marked as "R") carry demodulation reference signals (DMRS) for channel estimation at a receiver (e.g., a base station, another UE, etc.). For example, the UE may additionally send an SRS in the last symbol of a slot. The SRS may have a comb structure, and the UE may send the SRS on one of the combs. Figure 4A In the example shown, the SRS is comb-2 on one symbol. SRS can be used by the base station to obtain channel state information (CSI) for each UE. CSI describes how the RF signal propagates from the UE to the base station and represents the combined effects of scattering, fading, and power attenuation with distance. The system uses SRS for resource scheduling, link adaptation, massive MIMO, beam management, etc.

[0092] Currently, one SRS resource can span 1, 2, 4, 8, or 12 consecutive symbols within a slot with comb sizes of comb-2, comb-4, or comb-8. The following table shows the frequency offset from symbol to symbol for the currently supported SRS comb patterns.

[0093]

[0094] Table 2

[0095] The set of resource elements used to transmit SRS is called "SRS resource" and can be identified by the parameter SRS-ResourceId. The set of resource elements can span multiple PRBs in the frequency domain and N (e.g., one or more) consecutive symbols within a time slot in the time domain. In a given OFDM symbol, SRS resources occupy consecutive PRBs. An "SRS resource set" is a set of SRS resources used to transmit SRS signals and is identified by an SRS resource set ID (SRS-ResourceSetId).

[0096] Typically, the UE sends SRS to enable the receiving base station (serving base station or neighboring base station) to measure the channel quality between the UE and the base station. However, SRS can also be used as an uplink positioning reference signal for uplink positioning procedures such as uplink time difference of arrival (UL-TDOA), multi-round trip time (multi-RTT), downlink angle of arrival (DL-AoA), etc.

[0097] Several enhancements over the previous definition of SRS have been proposed for SRS for positioning (also known as "UL-PRS"), such as new staggering patterns within SRS resources (in addition to single symbol / comb-2), new comb types for SRS, new sequences for SRS, a greater number of SRS resource sets per component carrier, and a greater number of SRS resources per component carrier. In addition, the parameters SpatialRelationInfo and PathLossReference are configured based on downlink reference signals or SSBs from adjacent TRPs. Further, one SRS resource can be sent outside the active BWP, and one SRS resource can span multiple component carriers. Moreover, the SRS can be configured in the RRC connected state and only sent within the active BWP. Further, there can be no frequency hopping, no repetition factor, a single antenna interface, and new lengths for SRS (e.g., 8 and 12 symbols). There can also be open-loop power control and non-closed-loop power control, and comb-8 (i.e., SRS sent on every eighth subcarrier in the same symbol) can be used. Finally, a UE may transmit through the same transmit beam from multiple SRS resources for UL-AoA. All of these are additional features to the current SRS framework, which is configured through RRC higher layer signaling (and potentially triggered or activated through MAC Control Element (CE) or DCI).

[0098] Figure 4BThe diagram illustrates examples of individual channels within an uplink time slot of a frame according to various aspects of the present disclosure. A random access channel (RACH), also known as a physical random access channel (PRACH), may be located within one or more time slots within a frame based on a PRACH configuration. A PRACH may include 6 consecutive RB pairs within a time slot. The PRACH allows a UE to perform initial system access and achieve uplink synchronization. A physical uplink control channel (PUCCH) may be located at the edge of the uplink system bandwidth. The PUCCH carries uplink control information (UCI), such as scheduling requests, CSI reports, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and HARQ ACK / NACK feedback. A physical uplink shared channel (PUSCH) carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0099] It should be noted that the terms "positioning reference signal" and "PRS" may sometimes refer to specific reference signals used for positioning in LTE and NR systems. However, unless otherwise specified, as used herein, the terms "positioning reference signal" and "PRS" refer to any type of reference signal that can be used for positioning, such as, but not limited to, PRS, TRS, PTRS, CRS, CSI-RS, DMRS, PSS, SSS, SSB, SRS, UL-PRS, etc. as defined in LTE and 5G. In addition, the terms "positioning reference signal" and "PRS" refer to downlink or uplink positioning reference signals, unless otherwise specified. A downlink positioning reference signal may be referred to as a "DL-PRS", while an uplink positioning reference signal (e.g., SRS, PTRS used for positioning) may be referred to as a "UL-PRS". In addition, for signals (e.g., DMRS, PTRS) that can be sent in both the uplink and downlink, "UL" or "DL" may be prefixed to these signals to distinguish the direction. For example, "UL-DMRS" may be distinguished from "DL-DMRS".

[0100] Figure 5 An example four-step random access process 500 according to various aspects of the present disclosure is illustrated. The four-step random access process 500 is performed between a UE 504 and a base station 502 (illustrated as a gNB), which may correspond to any UE and base station described herein, respectively.

[0101] There are various situations where the UE can perform the four-step random access procedure 500 (also called "RACH procedure", "PRACH procedure", etc.). For example, when obtaining initial network access after leaving the RRC idle state, when performing the RRC connection reestablishment procedure, during handover, when downlink or uplink data arrives and the UE is in the RRC connected state but its uplink synchronization state is "out of sync", when transitioning out of the RRC INACTIVE state, when establishing time alignment for adding an SCell, when requesting other synchronization information, or when performing beam failure recovery, the UE can perform the four-step random access procedure 500.

[0102] Before performing the four-step random access procedure 500, the UE 504 first reads one or more SSBs broadcast by the base station 502, and the UE 504 uses the one or more SSBs to perform the four-step random access procedure 500. In NR, each beam transmitted by a base station (e.g., base station 502) is associated with a different SSB, and the UE (e.g., UE 504) selects a beam for communication with the base station 502. Based on the SSB of the selected beam, the UE 504 can then read the SIB type 1 (SIB1) transmitted on the selected beam, which carries cell access related information and provides the UE 504 with the scheduling of other system information blocks.

[0103] When a UE sends only the first message of the four-step random access procedure 500 to a base station 502, the UE sends a specific pattern called a preamble (also called a RACH preamble, a PRACH preamble, or a sequence). The RACH preamble distinguishes requests from different UEs 504. However, if two UEs use the same RACH preamble at the same time, there is a possibility of a conflict. A total of 64 such patterns are available to the UE 504, and for contention-based random access, the UE 504 randomly selects one of the patterns. However, for contention-free random access, the network instructs the UE 504 which pattern to use.

[0104] At 510, the UE 504 selects one of the 64 RACH preambles to send to the base station 502 as a RACH request. This message is referred to as "Message 1" or "Msg1" in the four-step RACH process. Based on the synchronization message (i.e., SIB1) from the base station 502, the UE 504 selects a RACH preamble and sends the RACH preamble at the RACH time (RO) corresponding to the selected SSB / beam. More specifically, in order for the base station 502 to determine which beam the UE 504 has selected, a specific mapping is defined between the SSB and the RO (occurring every 10, 20, 40, 80, or 160 ms). By detecting at which RO the UE 504 sends the preamble, the base station 502 can determine which SSB / beam the UE 504 has selected.

[0105] It is important to note that the RO is a time-frequency transmission opportunity for sending a RACH preamble, and the RACH preamble index (i.e., a value from 0 to 63 for the 64 possible preambles) enables the UE 504 to generate the type of RACH preamble expected at the base station 502. The RO and the RACH preamble index may be configured by the base station 502 to the UE 504 in the SIB. A RACH resource is an RO at which a RACH preamble index is sent. Therefore, depending on the context, the terms "RO" (or "RACH moment") and "RACH resource" may be used interchangeably.

[0106] Due to reciprocity, the UE 504 can use the uplink transmission beam corresponding to the best downlink reception beam determined during synchronization (i.e., the best reception beam for receiving the selected downlink beam from the base station 502). That is, the UE 504 determines the parameters of the uplink transmission beam using the parameters of the downlink reception beam for receiving the beam from the base station 502. If reciprocity is available at the base station 502, the UE 504 can transmit the preamble on one beam. Otherwise, the UE 504 repeatedly transmits the same preamble on all its uplink transmission beams.

[0107] The UE 504 also needs to provide its identity to the network (via the base station 502) so that the network can address it in the next step. This identity is called the Random Access Radio Network Temporary Identity (RA-RNTI) and is determined from the time slot in which the RACH preamble was sent. If the UE 504 does not receive any response from the base station 502 for a certain period of time, the UE 504 increases its transmission power by a fixed step size and sends the RACH preamble / Msg1 again.

[0108] At 520, the base station 502 sends a random access response (RAR) to the UE 504 on the selected beam, referred to as "Message 2" or "Msg2" in the four-step RACH process. The RAR is sent on the physical downlink shared channel (PDSCH) and is addressed to the RA-RNTI calculated from the time slot (i.e., RO) in which the preamble is sent. The RAR carries the following information: cell radio network temporary identifier (C-RNTI), timing advance (TA) value, and uplink granted resources. The base station 502 allocates the C-RNTI to the UE 504 to enable further communication with the UE 504. The TA value specifies that the UE should change its timing to compensate for the round-trip delay between the UE 504 and the base station 502. The uplink granted resources indicate the initial resources that the UE 504 can use on the PUSCH. After this step, the UE 504 and the base station 502 establish a coarse beam alignment that can be utilized in subsequent steps.

[0109] At 530, using the allocated PUSCH, UE 504 sends an RRC connection request message, referred to as "Message 3" or "Msg3", to base station 502. Because UE 504 sends Msg3 on resources scheduled by base station 502, base station 502 knows where to detect Msg3 and which uplink receive beam should be used. Note that Msg3 PUSCH can be sent on the same or different uplink transmit beam as Msg1.

[0110] UE 504 identifies itself in Msg3 by the C-RNTI allocated in the previous step. This message contains the identity of UE 504 and the connection establishment cause. The identity of UE 504 is a temporary mobile subscriber identity (TMSI) or a random value. If UE 504 has been previously connected to the same network, the TMSI is used. UE 504 is identified by the TMSI in the core network. If UE 504 is only connected to the network for the first time, a random value is used. The reason for the random value or TMSI is that, due to multiple requests arriving at the same time, C-RNTI may have been allocated to more than one UE in the previous step. The connection establishment cause indicates the reason why UE 504 needs to connect to the network, and will be further described below.

[0111] At 540, if Msg3 is successfully received, base station 502 responds with a contention resolution message, referred to as "Message 4" or "Msg4". This message is addressed to the TMSI (from Mg3) or a random value, but contains a new C-RNTI for further communications. Specifically, base station 502 sends Msg4 in the PDSCH using the downlink transmit beam determined in the previous step.

[0112] The above-mentioned four-step random access process 500 is a contention-based random access process. In contention-based random access, any UE 504 connected to the same cell or TRP sends the same request, in which case there is a possibility of conflict between the requests from various UEs 504. In contention-free random access, the network can instruct the UE 504 to use a unique identity to avoid conflicts between its requests and requests from other UEs. When the UE 504 is in RRC connected mode before the random access process, such as in the case of handover, the contention-free random access process can be performed.

[0113] Figure 6 An example two-step random access process 600 according to various aspects of the present disclosure is illustrated. The two-step random access process 600 can be performed between a UE 604 (e.g., any UE described herein) and a base station 602 (illustrated as a gNB), which can correspond to any UE and base station described herein, respectively.

[0114] At 610, UE 604 sends a RACH message A ("MsgA") to base station 602. In the two-step random access procedure 600, the above reference Figure 5 The described Msg1 and Msg3 are collapsed (eg, combined) into MsgA and sent to the base station 602. Thus, MsgA includes a RACH preamble and a PUSCH, similar to Msg3 PUSCH of the four-step RACH process. Figure 5 As described above, the RACH preamble code will have been selected from 64 possible preamble codes and can be used as a reference signal for demodulating the data sent in MsgA. At 620, UE 604 receives RACH message B ("MsgB") from base station 602. MsgB can be Figure 5 Described combination of Msg2 and Msg4.

[0115] Combining Msg1 and Msg3 into one MsgA and combining Msg2 and Msg4 into one MsgB enables UE 604 to reduce the RACH process setup time to support the low latency requirements of 5G NR. Although UE 604 can be configured to support the two-step random access process 600, if the UE cannot use the two-step random access process 600 due to certain constraints (e.g., high transmit power requirements, etc.), UE 600 can still support the four-step random access process 500 as a fallback. Therefore, the UE in 5G / NG can be configured to support the two-step random access process and the four-step random access process, and can determine which random access process to configure based on the RACH configuration information received from the base station.

[0116] After the random access procedure 500 / 600, the UE 504 / 604 is in an RRC connected state. The RRC protocol is used for the air interface between the UE and the base station. The main functions of the RRC protocol include connection establishment and release functions, broadcasting of system information, radio bearer establishment, reconfiguration and release, RRC connection mobility procedures, paging notification and release, and outer loop power control. In LTE, the UE can be in one of two RRC states (connected state or idle state); while in NR, the UE can be in one of three RRC states (connected state, idle state or inactive state). Different RRC states have different radio resources associated with these states, which the UE can use when it is in a given state.

[0117] Figure 7 700 is a schematic diagram of different RRC states (also referred to as RRC modes) in NR according to various aspects of the present disclosure. When the UE is powered on, the UE is initially in the RRC disconnected / idle state 710. After the random access procedure 500 or 600, the UE moves to the RRC connected state 720. If the UE is inactive for a short period of time, the UE can suspend the session by moving to the RRC inactive state 730. The UE can continue the session by performing the random access procedure 500 or 600 to transition back to the RRC connected state 720. Therefore, whether the UE is in the RRC idle state 710 or the RRC inactive state 730, the UE needs to perform the random access procedure 500 or 600 to transition to the RRC connected state 720.

[0118] Operations performed in the RRC idle state 710 include public land mobile network (PLMN) selection, broadcast of system information, cell reselection mobility, paging for mobile terminated data (initiated and managed by 5GC), and discontinuous reception (DRX) of core network paging (configured by NAS). Operations performed in the RRC connected state 720 include connection establishment (control plane and user plane) between 5GC (e.g., 5GC 260) and new RAN (e.g., new RAN 220), storage of UE context at the new RAN and UE, new RAN knowledge of the cell to which the UE belongs, transmission of unicast data to / from the UE, and network controlled mobility. Operations performed in the RRC inactive state 730 include broadcast of system information, cell reselection for mobility, paging (initiated by the new RAN), RAN-based notification area (RNA) management (performed by the new RAN), DRX of RAN paging (configured by the new RAN), connection establishment (control plane and user plane) between 5GC and new RAN for UE, storage of UE context in the new RAN and UE, and new RAN knowledge of the RNA to which the UE belongs.

[0119] In some cases, during an ongoing positioning session (such as a multiple round-trip time (multi-RTT) session (which can be uplink only or downlink and uplink), an uplink time difference of arrival (UL-TDOA) session (uplink only), an uplink angle of arrival (UL-AoA) session (uplink only), etc.), the UE may transition from the RRC connected state 720 to the RRC idle state 710 or the RRC inactive state 730.

[0120] In the RRT process, the initiator (base station or UE) sends an RTT measurement signal (e.g., PRS or SRS) to the responder (UE or base station), and the responder returns an RRT response signal (e.g., SRS or PRS) to the initiator. The RTT response signal includes the difference between the ToA of the RRT measurement signal and the transmission time of the RTT response signal, which is called the receive transmission (Rx-Tx) measurement. The initiator calculates the difference between the transmission time of the RTT measurement signal and the ToA of the RTT response signal, which is called the "Tx-Rx" measurement. The propagation time (also called "flight time") between the initiator and the responder can be calculated from the Rx-Tx and Tx-Rx measurements. Based on the propagation time and the known speed of light, the distance between the initiator and the responder can be determined. For multi-RTT (also called "multi-cell-RTT") positioning, the UE performs an RTT process with multiple base stations so that its position can be triangulated based on the known locations of the base stations. RTT and multi-RTT methods can be combined with other positioning technologies, such as UL-AoA and DL-AoD, to improve positioning accuracy.

[0121] In a UL-TDOA session, the UE sends an uplink reference signal (e.g., SRS) received by a reference base station and one or more non-reference base stations. The base station reports the time of arrival (ToA) of the uplink reference signal to the positioning entity (e.g., UE, serving base station, location server 230, LMF 270, SLP 272), and the positioning entity calculates the reference signal time difference (RSTD) of the uplink reference signal between the reference base station and each non-reference base station. Based on the known positions of the base stations involved and the RSTD measurements, the positioning entity can estimate the position of the UE.

[0122] Unlike multi-RTT and UL-TDOA positioning methods that require three or more base stations to measure signals from the UE, a UL-AoA session can be performed between the UE and a single base station. In the UL-AoA process, for UL-AoA positioning, the base station measures the angle and other channel properties (e.g., gain level) of the uplink receive beam used to communicate with the UE to estimate the UE's position. The UE and the base station may also perform an RTT process to further improve the position estimate.

[0123] There are a variety of reasons why a UE may transition from the RRC connected state 702 to the RRC idle state 710 or the RRC inactive state 730 during an ongoing positioning session. For example, the DRX cycle configured for the UE may require the UE to transition to the RRC inactive state 730, or the UE's serving base station may instruct the UE to transition to the RRC inactive state 730, or the UE may be disconnected from the network for some reason and transition to the RRC idle state 710. Regardless of the reason, it is advantageous for the UE to be able to continue the ongoing positioning session using a subsequent random access procedure 500 or 600 before the UE transitions back to the RRC connected state 720.

[0124] Therefore, there are techniques for associating SRS resources with RACH resources of a UE in an RRC idle state 710 or an RRC inactive state 730 during an uplink-only (e.g., UL-AoA, UL-TDOA) or uplink-downlink (e.g., RTT) positioning session. Figure 8 800 is a diagram of an example positioning process between a UE 804 and two TRPs 802-1 and 802-2 (collectively referred to as TRPs 802) according to aspects of the present disclosure. UE 804 may correspond to any UE described herein, and TRPs 802 may correspond to any base station (or TRP of a base station) described herein. The positioning session may be a multi-RTT session, a UL-TDOA session, a UL-AoA session, etc.

[0125] During the first RRC connection state 810 (which may correspond to the RRC connection state 720), the UE 804 is configured with a first set of one or more SRS resources for sending one or more SRS 812 for a positioning session to the TRP 802. Specifically, the UE 804 is configured with one or more SRS resources for sending one or more SRS 812-1 (labeled as "SRS1") to the TRP 802-1, and one or more SRS resources for sending one or more SRS 812-2 (labeled as "SRS2") to the TRP 802-2. In one aspect, the one or more SRS resources may be an SRS resource set.

[0126] When in the first RRC connection state 810, the UE 804 obtains a first association relationship between at least one SRS resource (or at least one SRS resource set) among the one or more SRS resources and at least one RACH resource among the one or more RACH resources of each TRP 802. More specifically, the UE 804 obtains an association relationship between at least one SRS resource (or at least one SRS resource set) among the one or more SRS resources for sending one or more SRS 812-1 and at least one RACH resource among the one or more RACH resources allocated for sending a RACH message (e.g., Msg1, Msg3, MsgA) to the TRP 802-1. Similarly, the UE 804 obtains an association relationship between at least one SRS resource (or at least one SRS resource set) among the one or more SRS resources for sending one or more SRS 812-2 and at least one RACH resource among the one or more RACH resources allocated for sending a RACH message (e.g., Msg1, Msg3, MsgA) to the TRP 802-2. UE 804 may receive (be configured with) an association relationship from a serving TRP (e.g., one of TRPs 802-1 and 802-2) or corresponding TRPs 802-1 and 802-2. In one aspect, the association relationship may be received together with the SRS resource configuration or in a separate transmission. For example, the at least one SRS resource may be one or more SRS resources, an SRS resource set, etc.

[0127] Subsequently, the UE 804 transitions to the RRC idle state or the RRC inactive state 820. For example, this may be due to a command from a serving TRP (e.g., one of TRPs 802-1 and 802-2), expiration of a DRX timer, etc. When the UE 804 determines to switch from the RRC idle / inactive state 820 to the second RRC connected state 830, the UE 804 uses the configured association relationship between the SRS resource (or SRS resource set) and the RACH resource received during the RRC connected state 810 to send a RACH message 822 (e.g., Msg1 and Msg3, or MsgA) of the associated random access procedure (e.g., random access procedure 500 / 600). More specifically, UE 804 sends a RACH message 822-1 (e.g., Msg1 and Msg3, or MsgA) to TRP 802-1 using transmission attributes inherited from at least one associated SRS resource (or SRS resource set) that sends SRS 812-1. Similarly, UE 804 sends a RACH message 822-2 (e.g., Msg1 and Msg3, or MsgA) to TRP 802-2 using transmission attributes inherited from at least one associated SRS resource (or SRS resource set) that sends SRS 812-2. TRP 802 measures RACH messages on associated RACH resources, just as it measures SRS resources used for positioning (e.g., ToA, AoA, etc.). The transmission properties inherited from at least one associated SRS resource may include an uplink spatial transmit filter for the at least one SRS resource, a path loss reference resource for the at least one SRS resource, a path loss estimate and / or a transmission power estimate, a transmission timing for the at least one SRS resource, a subcarrier spacing (SCS), a duration and / or a transmission bandwidth for the at least one SRS resource. It should be noted that MsgA contains a RACH preamble and a PUSCH, and the PUSCH carries a DMRS. Therefore, if the RACH message 822 is a MsgA, the preamble or the DMRS or both can be used for positioning.

[0128] More specifically, in one aspect, the configured association relationship may correlate the uplink spatial transmission filter (also referred to as uplink transmission beam) of at least one SRS resource (or SRS resource set) with at least one RACH resource. In this case, the UE 804 may use the uplink spatial transmission filter of at least one SRS resource to send a PRACH preamble (e.g., a PRACH preamble of Msg1 or MsgA) on at least one RACH resource. In addition or alternatively, the configured association relationship may correlate the path loss reference resource, path loss estimate, and / or transmission power estimate of at least one SRS resource (or SRS resource set) with at least one RACH resource. In this case, the UE 804 may use the transmission power estimate, path loss estimate, and / or path loss reference resource of at least one SRS resource to send a PRACH preamble on at least one RACH resource. In addition or alternatively, the configured association relationship may correlate the transmission timing of at least one SRS resource (or SRS resource set) with at least one RACH resource. In this case, the UE 804 may use the transmission timing of at least one SRS resource to send a PRACH preamble on at least one RACH resource. In addition or alternatively, the configured association relationship may associate a first SCS, a first duration, and / or a first transmission bandwidth of at least one SRS resource (or a set of SRS resources) with at least one RACH resource. In this case, the UE 804 may send a PRACH preamble on at least one RACH resource using a second SCS, a second duration, and / or a second transmission bandwidth, the second SCS, the second duration, and / or the second transmission bandwidth being based on the first SCS, the first duration, and / or the first transmission bandwidth of the at least one SRS resource.

[0129] With reference in more detail to the SCS, duration, and / or transmission bandwidth of at least one SRS resource (or set of SRS resources), at least one SRS resource may have a different SCS, duration, and / or transmission bandwidth than that allowed by a RACH resource. Therefore, there may need to be a mapping between the SCS of at least one SRS resource and the SCS of at least one RACH resource, between the duration of at least one SRS resource and the duration of at least one RACH resource, and / or between the transmission bandwidth of at least one SRS resource and the transmission bandwidth of at least one RACH resource. These mappings may be defined by relevant standards. These mappings may take the form of one or more rules. For example, a rule may provide that if the duration of at least one SRS resource is greater than "X", then "Y" is selected for the duration of at least one RACH resource.

[0130] When UE 804 sends RACH message 822, UE 804 needs to identify itself to the receiving TRP 802 in each RACH resource. To this end, as a first option, a one-to-one mapping of RACH time to UE can be provided to each TRP 802. That is, each UE (e.g., UE 804) will be associated with its own RACH time. The mapping can be provided by a location server (e.g., location server 230, LMF 270, SLP 272) or a TRP (e.g., a serving TRP). As a second option, the identifier of UE 408 can be transmitted to the network in a Msg3 or MsgA payload. As a third option, there may be some association between UE 804 and the corresponding RACH resource. For example, a RACH preamble index can be mapped to a specific UE. This information can be provided by a location server or a TRP (e.g., a serving TRP). As a fourth option, a group of UEs may be associated with a group of one or more RACH resources, one or more RACH moments, one or more RACH preamble indices, or any combination thereof, and the UE 804 may provide a shorter identifier in the RACH message payload that uniquely identifies the UE 804 within the group. Again, the mapping may be provided by a location server or a TRP (e.g., a serving TRP).

[0131] A trigger mechanism may also be needed to notify the involved TRPs (here TRPs 802-1 and 802-2) to monitor the associated RACH resources instead of monitoring the SRS resources used for positioning. As a first option, the serving TRP (e.g., one of TRPs 802-1 and 802-2) can notify the location server (e.g., location server 230, LMF 270, SLP 272), and the location server can notify the adjacent TRP (e.g., the other of TRPs 802-1 and 802-2). As a second option, the serving TRP can directly notify the adjacent TRP on the backhaul link.

[0132] After the random access procedure (e.g., random access procedure 500 / 600) with TRP 802, UE 804 is in a second RRC connected state 830 (e.g., RRC connected state 720). At this time, UE 804 is configured (e.g., by location server 230, LMF 270, SLP 272) with a new set of one or more SRS resources (or SRS resource sets) for positioning purposes for each TRP 802. UE 804 continues the positioning session by sending one or more SRS 832-1 to TRP 802-1 on the newly configured SRS resources for TRP 802-1 and sending one or more SRS 832-2 to TRP 802-2 on the newly configured SRS resources for TRP 802-2. At some time after entering the second RRC connected state 830, the UE 804 may receive a second association relationship between at least one SRS resource (or a set of SRS resources) in a set of one or more SRS resources allocated for each TRP 802 and at least one RACH resource in one or more RACH resources allocated for each TRP 802. Again, the UE 804 may receive the association relationship from a serving TRP (e.g., one of TRPs 802-1 and 802-2) or a corresponding TRP 802. The UE 804 may store the association relationship until the next transition to the RRC idle or disconnected state during the same positioning session. Therefore, it should be understood that the UE 804 may repeat the above operations until the positioning session is completed.

[0133] Because the RACH message 822 is sent as part of an ongoing positioning session, the TRP 802 performs positioning measurements (e.g., ToA, AoA) of the SRS 812, RACH message 822, and SRS 832. The TRP 802 may then report these measurements to a positioning entity, such as a location server (e.g., location server 230, LMF 270, SLP 272), UE 804 (for UE-based positioning), or a serving TRP (e.g., one of TRPs 802-1 and 802-2). If the positioning session is a multi-RTT session, the TRP 802 may send a downlink reference signal in response to the received SRS 812, RACH message 822, and SRS 832. As is known in the art, the payload of these response messages may include the amount of time between the reception of the SRS 812, RACH message 822, and SRS 832 and the transmission of the response signal (i.e., the Rx-Tx measurements of the TRP 802). Alternatively, the TRP 802 may send this information to a positioning entity. The location of the UE 804 may then be estimated using known techniques.

[0134] It should be understood that the various network nodes described above can communicate through different interfaces and using different protocols. For example, UE 804 can communicate with a location server using LTE Positioning Protocol (LPP) signaling, and vice versa. TRP 802 can communicate with a location server using LTE Positioning Protocol Type A (LPPa) or NR Positioning Protocol Type A (NRPPa) signaling. TRP 802 can communicate with each other via a backhaul connection (e.g., backhaul connection 223). UE 804 can communicate with TRP 802 using a wireless cellular protocol (such as, LTE or NR protocol).

[0135] There are currently two RACH preamble lengths: a RACH preamble of length 839 (referred to as a "long" preamble or sequence) and a RACH preamble of length 139 (referred to as a "short" preamble or sequence). In addition, the long preamble uses four preamble formats, while the short preamble uses nine preamble formats. Fig. 9 9 is a diagram illustrating different preamble lengths and formats. Fig. 9 As can be seen in the figure, the four formats of the long preamble are numbered '0' to '3', while the nine formats of the short preamble are numbered "A1" to "A3", "B1" to "B4" and "C0" to "C2". Each row of Chart 900 is an RO. Each RO starts with a cyclic prefix of a certain length (denoted as "C"), has one or more repetitions of the preamble sequence (denoted as "S"), and ends with a guard period of a certain length (denoted as "G"). For reference, the last row of Chart 900 illustrates a subframe of a PUSCH with a subcarrier spacing of 15kHz. Therefore, the subframe includes a time slot of a length of 1ms and divided into 14 symbols (see Table 1).

[0136] The four formats of the long preamble are designed for large (i.e. macro) cell deployments in FR1 and are typically used in frequency bands below 6 GHz. The preamble formats (i.e. '0' to '3') are part of the random access configuration of the cell (broadcast in the SIB), and each cell is typically limited to a single preamble format. In NR, the numerology used for the long preamble is different from other NR transmissions because the source of the long preamble is partly from the preamble used for LTE. For example, the preamble formats '0' and '1' in NR are the same as the preamble formats '0' and '2' in LTE. The preamble can use a subcarrier spacing of 1.25 kHz or 5 kHz. A long preamble with a 1.25 kHz subcarrier spacing occupies 6 resource blocks in the frequency domain, while a preamble with a 5 kHz subcarrier spacing occupies 24 resource blocks.

[0137] A short preamble is generally shorter than a long preamble and usually spans only a few OFDM symbols (e.g. Fig. 9The nine formats of the short preamble are designed for small cell deployments, including indoor coverage. These preamble formats can be used in both FR1 and FR2 ranges. The subcarrier spacing of the short preamble is aligned with the normal NR subcarrier spacing (e.g., 15kHz, 30kHz, 60kHz, and 120kHz). In FR1, the short preamble uses 15 or 30kHz subcarrier spacing; while in FR2, the short preamble uses 60 or 120kHz subcarrier spacing. The short preamble occupies 12 resource blocks in the frequency domain, regardless of the preamble numerology.

[0138] The short preamble format is designed so that the last part of each OFDM symbol serves as the cyclic prefix of the next OFDM symbol and the length of the preamble OFDM symbol is equal to the length of the data OFDM symbol. Therefore, in most cases, multiple preamble transmissions can be time multiplexed within a single RACH slot (where there is a configured number of RACH slots per data slot, see below). Fig.10 ). In other words, for a short preamble, there can be multiple ROs in both the frequency domain and in the time domain within a single RACH slot (also called a PRACH slot). However, it should be noted that a RACH slot is not necessarily equivalent to a data slot, as shown below. Fig.10 described.

[0139] NR supports a mix of "A" and "B" preamble formats to implement additional formats, such as "A1 / B1", "A2 / B2", and "A3 / B3". Short preamble formats "A" and "B" are identical, except that the cyclic prefix of the "B" format is slightly shorter. Preamble formats "B2" and "B3" are used in combination with the corresponding "A" formats (i.e., "A2" and "A3").

[0140] Short preambles allow the base station receiver to use the same FFT for both data and random access preamble detection. These preambles are a combination of multiple shorter OFDM symbols per PRACH preamble, making them more robust to time-varying channels and frequency errors. Short preambles also support analog beam scanning during PRACH reception, so that the same preamble can be received in different beams at the base station.

[0141] Fig.10 FIG. 1000 is a schematic diagram of an example allocation of ROs in the time domain. Fig.10 In the example shown in Figure 3, there are two 120kHz time slots (numbered '7' and '8') that span one 60kHz time slot. Table 3 below shows Fig.10 The parameters in Table 3 lead to the time domain configuration parameters for the specific RO allocation shown. Fig.10 RO allocation shown.

[0142]

[0143] Table 3

[0144] Therefore, according to Table 3 and Fig.10 As shown, there are two 120kHz RACH slots (slots '7' and '8') within a single 60kHz slot, and the RO (shaded symbols) starts at symbol 0 of slot '7'. Each RO has the format "A1" and therefore has a duration of two symbols (see Fig. 9 900). There are 6 ROs in each time slot, and a total of 12 consecutive symbols in each time slot.

[0145] For frequency domain configuration, the frequency domain position (i.e., frequency domain resources) of the RACH preamble is determined by the RRC parameters "msg1-FDM" and "msg1-FrequencyStart". The parameter "msg1-FDM" can take the value {1,2,4,8}. The parameter "msg1-FrequencyStart" is an integer from '1' to the maximum number of PRBs minus 1. The time domain position (i.e., time domain resources) of the RACH preamble is determined by the RRC parameter "prach-ConfigurationIndex", which is an integer from 0 to 255.

[0146] In NR, each synchronization signal (ie, SSB) is associated with a different downlink transmit beam, and the UE can select a certain synchronization signal beam and send PRACH (ie, preamble) using an uplink transmit beam based on the selected downlink transmit beam. In order for the network to determine which beam the UE has selected, there is a specific mapping between SSB and RO. By detecting which RO the UE sends PRACH on, the network can determine which SSB / beam the UE has selected. The mapping between SSB and RO is defined by the RRC parameters "msg1-FDM" and "ssb-perRACH-OccasionAndCB-PreamblesPerSSB". The parameter "msg1-FDM" specifies how many ROs are allocated in the frequency domain at the same position in the time domain. The parameter "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" specifies how many SSBs can be mapped to one RO and how many preamble indexes can be mapped to a single SSB.

[0147] FIG. 11A to FIG. 11D Various examples of RO allocation in the time domain and the frequency domain are illustrated. Fig.11AIn the example diagram 1100A, "msg1-FDM" is equal to '1', and "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" is equal to '1'. Fig. 11B In the example diagram 1100B, "msg1-FDM" is equal to '2', and "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" is equal to '1'. Fig. 11C In the example diagram 1100C, "msg1-FDM" is equal to '2', and "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" is equal to '8'. Fig.11D In example diagram 1100D, 'msg1-FDM' is equal to '2', and 'ssb-perRACH-OccasionAndCB-PreamblesPerSSB' is equal to '1 / 2'.

[0148] As described above, the short preamble occupies 12 PRBs in the frequency domain, regardless of the preamble numerology. This is small compared to the bandwidth of the SRS used for positioning. Therefore, when the RACH preamble is used for positioning purposes, it is advantageous to increase the bandwidth of the RACH preamble transmission to be more comparable to the bandwidth of the SRS used for positioning. Therefore, the present disclosure provides a technique for associating one SRS resource (or SRS resource set) to multiple RACH resources or multiple ROs to increase the transmission bandwidth of the RACH preamble, thereby increasing the measurement resolution at the base station and the accuracy of the positioning estimate using the RACH preamble. More specifically, the UE can be configured with an association relationship between an SRS resource (or SRS resource set) and multiple RACH resources or multiple ROs on different bandwidths, wherein the UE transmits each RACH preamble using the same antenna port in adjacent transmission opportunities.

[0149] Fig.12 1200 is a diagram of an example positioning session between a UE 1204 and two TRPs (each numbered 1202 and labeled “TRP1” and “TRP2”) according to aspects of the present disclosure. The UE 1204 may correspond to any UE described herein, and the TRPs may be TRPs of any base station described herein. Fig.12 In the figure, the horizontal axis represents time and the vertical axis represents frequency. A positioning session may be a multi-RTT session, a UL-TDOA session, a UL-AoA session, etc. Fig.12 Two TRPs 1202 are illustrated to indicate that multiple TRPs may exist and that SRS and corresponding RACH resources may be received by multiple TRPs. Therefore, the present disclosure does not require and is not limited to the two TRPs 1202 illustrated.

[0150] During a first RRC connection state 1210 (e.g., RRC connection state 720), UE 1204 is configured with SRS resources 1212 (or an SRS resource set) for sending a first SRS (labeled as "SRS1") for positioning to TRP 1202. While in RRC connection state 1210, UE 1204 obtains an association between the SRS resources 1212 (or an SRS resource set) and a plurality of RACH resources 1222 (labeled as "RACH1", "RACH2", "RACH3") of TRP 1202. More specifically, UE 1204 obtains an association between the SRS resources 1212 (or an SRS resource set) for sending an SRS for positioning and a plurality of RACH resources 1222 allocated for sending RACH signals / messages (e.g., Msg1, Msg3, MsgA) to TRP 1202. In one aspect, UE 1204 may receive (be configured with) an association relationship from a serving TRP (eg, "TRP1" 1202). In one aspect, the association relationship may be received with the SRS resource configuration or in a separate transmission.

[0151] Subsequently, UE 1202 transitions to an RRC idle state or an RRC inactive state 1220 (e.g., RRC idle state 710 or RRC inactive state 730, respectively). For example, this may be due to a command from a serving TRP (e.g., "TRP1" 1202), expiration of a DRX timer, etc. Before UE 1204 switches back to RRC connected state 1210 from RRC idle / inactive state 1220, UE 1204 uses the configured association of SRS resources 1212 (or SRS resource sets) received during the previous RRC connected state 1210 with multiple RACH resources 1222 to send a RACH signal / message (e.g., Msg1 and Msg3, or MsgA) of a random access procedure (e.g., random access procedure 500 / 600) required for transitioning back to RRC connected state 1210. More specifically, UE 1204 transmits a RACH message (e.g., Msg1 and Msg3, or MsgA) to TRP 1202 using the transmission attributes inherited from the associated SRS resource 1212 (or SRS resource set) that transmitted the last SRS for positioning ("SRS1") . The transmission attributes inherited from the associated SRS resource 1212 (or SRS resource set) may be the same as those described above with reference to Figure 8 The TRP 1202 measures RACH signals / messages on the associated multiple RACH resources 1222, just as measuring SRS for positioning (eg, ToA, UL-AoA, etc.).

[0152] In one aspect, the associated multiple RACH resources 1222 should correspond to ROs having different frequency bandwidths but covering a continuous bandwidth when processed together. The associated multiple RACH resources 1222 should also correspond to ROs that occur in consecutive time instances where the device has no gaps or the gaps are less than a specified threshold. In this case, the threshold should be such that no other channels are expected to be transmitted during the gap period. These time and frequency constraints are Fig.12 12 is shown by a "step-by-step" progression of multiple RACH resources 1222. Note that, in general, it can be assumed that only ROs within the same RACH timeslot are coherently transmitted (i.e., using the same antenna port). Furthermore, it can be assumed that only ROs within the RACH timeslot of the same subframe of FR1 (or 60kHz timeslots of FR2) are coherently transmitted. Further, the associated multiple RACH resources 1222 should correspond to ROs transmitted through the same transmission port of the UE, which are quasi-co-located in space (i.e., using the same transmit beam), have the same transmit power and / or have the same timing.

[0153] After a random access procedure (e.g., random access procedure 500 / 600) with TRP 1202, UE 1204 is in a second RRC connection state 1210 (e.g., RRC connection state 720). At this time, UE 1204 is configured (e.g., by location server 230, LMF 270, SLP 272) with new SRS resources 1232 (or SRS resource sets) for positioning purposes of TRP 1202. UE 1204 continues the positioning session by sending an SRS for positioning to TRP 1202 on the newly configured SRS resources 1232 (or SRS resource sets). At some time after entering the second RRC connection state 1210, UE 1204 may obtain a second association relationship between one SRS resource 1232 (or one SRS resource set) and multiple RACH resources allocated for TRP 1202. Furthermore, UE 1202 may obtain the association relationship from the serving TRP. UE 1204 may store the association until the next time it transitions to the RRC idle or inactive state during the same positioning session. Therefore, it should be understood that UE 1204 may repeat the above operations until the positioning session is completed.

[0154] Because the RACH messages on the multiple RACH resources 1222 are sent as part of an ongoing positioning session, the TRP 1202 performs positioning measurements (e.g., ToA, UL-AoA) on the SRS sent on the SRS resource 1212 (or SRS resource set) for positioning, the RACH messages sent on the multiple RACH resources 1222, and the SRS sent on the SRS resource 1232 (or SRS resource set) for positioning. The TRP 1202 can then report these measurements to a positioning entity, such as a location server (e.g., location server 230, LMF 270, SLP 272), UE 1204 (for UE-based positioning), or a serving TRP. If the positioning session is a multi-RTT session, the TRP 1202 may send a downlink reference signal in response to a received SRS for positioning sent on an SRS resource 1212 (or an SRS resource set), a RACH message sent on multiple RACH resources 1222, and an SRS for positioning sent on an SRS resource 1232 (or an SRS resource set). As is known in the art, the payload of these response signals may include the amount of time between the reception of the SRS for positioning sent on the SRS resource 1212, the RACH message sent on multiple RACH resources 1222, and the SRS for positioning sent on the SRS resource 1232 and the transmission of the response signal. Alternatively, the TRP 1202 may send this information to the positioning entity. Then, the position of the UE 1204 may be estimated using known techniques.

[0155] FIG. 13A to FIG. 13C is a schematic diagram of example configurations of ROs according to various aspects of the present disclosure. In each figure, the "msg1-FDM" parameter (specifying how many ROs are allocated in the frequency domain at the same position in the time domain) is '4', and the "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" (specifying how many SSBs can be mapped to one RO and how many preamble code indices can be mapped to a single SSB) is '4'. In addition, the horizontal direction represents time, while the vertical direction represents frequency. Therefore, in each figure, there are four ROs in the vertical direction and four ROs in the horizontal direction. The length of each RO in the time domain is the number of symbols of the RO format, such as Fig. 9 As shown. The height of each RO in the frequency domain is the number of PRBs used for that RO format and that numerology. For example, a long preamble with a 1.25kHz numerology occupies 6 PRBs, while a preamble with a 5kHz numerology occupies 24 PRBs.

[0156] In one aspect, there may be 4 ROs in a set of RACH resources associated with an SRS resource (or set of SRS resources). In one aspect, the index of the RO may be explicitly configured, e.g., {0,5,10,15}, {4,9,14,3}, etc. Alternatively, there may be a specified pattern that defines how to detect ROs, so only the first index of the RO may need to be provided to each group. In one aspect, an SRS resource may be associated with only one RO in a group (e.g., the first RO that the UE desires to send), but the UE may also send the remaining ROs in the group.

[0157] Fig.13A 1300A is a schematic diagram illustrating a first example configuration of an RO. Fig.13A , the first group of RACH resources includes ROs numbered 3, 4, 9, 14, the second group of RACH resources includes ROs numbered 2, 7, 8, 13, the third group of RACH resources includes ROs numbered 1, 6, 11, 12, and the fourth group of RACH resources includes ROs numbered 0, 5, 10, 15. Since these RO groups form a diagonal pattern, the UE can be configured with only the index value of the first RO in each group, and the remaining index values ​​can be derived from the knowledge that the next RO in the group is diagonal to the previous RO. Alternatively, the UE can be configured with each index value. It should be understood that more than one RO group creation principle can be specified.

[0158] Fig. 13B 1300B is a diagram illustrating a second example configuration of an RO. Fig. 13B , the first group of RACH resources includes ROs numbered 2, 4, 10, 13, the second group of RACH resources includes ROs numbered 0, 6, 9, 15, the third group of RACH resources includes ROs numbered 3, 5, 11, 12, and the fourth group of RACH resources includes ROs numbered 1, 7, 8, 14. Since these RO groups do not have any specific pattern, the UE can be configured with an index value for each RO in a group.

[0159] Can be obtained from Fig.13A and Fig. 13B As can be seen in FIG, ROs in a group are adjacent in the time domain (horizontal axis) and are also continuous in the frequency domain when processed at the receiving base station (or TRP). In other words, the group of ROs spans multiple adjacent frequency resources (e.g., PRBs) over multiple adjacent time resources (e.g., symbols, time slots).

[0160] For some UEs, based on their capabilities, they may send multiple ROs on the same OFDM symbol. In this case, a group of ROs associated with an SRS resource (or SRS resource set) may be on the same symbol. Fig. 13C Shown. Fig. 13C 1300C is a diagram illustrating an example configuration of a RO across consecutive symbols. Fig. 13C , the first group of RACH resources includes ROs numbered 0 to 3, the second group of RACH resources includes ROs numbered 4 to 7, the third group of RACH resources includes ROs numbered 8 to 11, and the fourth group of RACH resources includes ROs numbered 12 to 15. Although each group has a length of one symbol, each group is associated with a different SRS resource. It should be noted that although these RO groups are associated with specific SRS resources, it does not mean that their lengths are the same as the associated SRS resources.

[0161] In other aspects of the present disclosure, different repetition times across frequencies may be considered for different RACH formats. Fig. 9 ) format '2' (for long preamble), it may not be possible to associate one SRS with multiple RACH instances. However, for format 'B1' (for short preamble) with only 4 symbols at 30kHz subcarrier spacing, there can be multiple (e.g., 7) such repetitions in one subframe, resulting in a total RACH bandwidth of 84 RBs (i.e., 7*12=84 PBs) for 30kHz subcarrier spacing, which is the total bandwidth of the group of ROs, 30MHz.

[0162] In one aspect, in each RO of a group of ROs associated with an SRS resource, the UE may be configured with a preamble index value or a sequence of preamble index values. If the UE is configured with a preamble index value (with a value from 0 to 63, since there are 64 preambles), the UE may be expected to use the preamble index value for all ROs in the group. If the UE is configured with a sequence of preamble index values ​​and there are as many preamble index values ​​as there are ROs in the group, the UE may be expected to send each preamble index in each RO. If the UE is configured with a sequence of preamble index values ​​and there are fewer preamble index values ​​than there are ROs in the group, the UE may randomly (for example) select a preamble index for each RO in the group of ROs.

[0163] In one aspect, the same RO may be shared between positioning and regular RACH. To distinguish positioning RACH from regular RACH, the UE may use different RACH preamble indexes and / or RACH configuration indexes depending on the type of RACH (i.e., positioning or regular). Alternatively or in addition, a new RACH configuration index may be added so that positioning RACH and regular RACH may coexist. Note that in this aspect, the same UE may use the same RO for positioning and regular RACH, or different UEs may use the same RO, some for positioning and others for regular RACH.

[0164] In the case where the UE uses the same RACH resource for positioning and initial access, the UE needs to add this information to msgA or Msg3. For example, if the RACH resource is a shared resource, the UE can provide this information in the message payload. For example, "1" can mean "initial access", "2" can mean "positioning", and "3" can mean "both". However, it should be understood that this is just an example of how to convey this information. In the case of "both", the UE does not need to add the positioning information to the payload because the positioning message will be added in the RRC connected state. That is, if the UE is performing initial access and positioning, the UE moves to the RRC connected state, so there is no need to send parameters as part of the payload of the RACHPUSCH (in MsgA or Msg3) during the connected state.

[0165] In one aspect, the identification of which set of ROs (or which set of RACH resources) may be used for positioning or conventional RACH may be a configuration that is common across cells. This means that the UE receives a configuration of the type of RACH resource group from the base station, for example, via SIB1 from the serving cell. All SRS resources configured when the UE is in the RRC connected state will then contain a cell identifier and a RACH resource group identifier pointing to the common RACH resource configuration.

[0166] It should be noted that the UE may be configured in the various ways described above, either through a SIB broadcast to all UEs served by the cell or through a specific configuration unicast to the UE.

[0167] Fig.14 An example wireless communication method 1400 is illustrated in accordance with aspects of the present disclosure. The method 1400 may be performed by a UE (eg, any UE described herein).

[0168] At 1410, the UE receives a configuration of an SRS resource or a set of SRS resources during a first state (e.g., RRC connected state 720). In one aspect, operation 1410 may be performed by receiver 312, processing system 332, memory component 340, and / or positioning module 342, any or all of which may be considered as means for performing the operation.

[0169] At 1420, the UE obtains an association between an SRS resource or a set of SRS resources and a set of RACH resources. The UE may receive the first association during the first state or during the last RRC connected state 720. In one aspect, operation 1420 may be performed by the receiver 312, the processing system 332, the memory component 340, and / or the positioning module 342, any or all of which may be considered as means for performing the operation.

[0170] At 1430, the UE transmits a set of RACH signals (e.g., to at least one TRP) using a transmission attribute based on an association between an SRS resource or a set of SRS resources and the set of RACH resources when outside of the first state (e.g., in the RRC disconnected / idle state 710 or the RRC inactive state 730). In one aspect, the set of RACH resources spans multiple adjacent frequency resources over a single time resource, or the set of RACH resources spans multiple adjacent frequency resources over multiple time resources. In one aspect, operation 1440 may be performed by the transmitter 314, the processing system 332, the memory component 340, and / or the positioning module 342, any or all of which may be considered as means for performing the operation.

[0171] Fig.15 An example wireless communication method 1500 is illustrated in accordance with aspects of the present disclosure. The method 1500 may be performed by a TRP (eg, a TRP of any base station described herein).

[0172] At 1510, the TRP receives an SRS on an SRS resource or a set of SRS resources from a UE (e.g., any UE described herein). In one aspect, operation 1510 may be performed by receiver 352, processing system 384, memory component 386, and / or positioning module 388, any or all of which may be considered means for performing the operation.

[0173] At 1520, the TRP receives a set of RACH signals from the UE, the set of RACH signals having transmission attributes based on an association relationship between an SRS resource or a set of SRS resources and a set of RACH resources receiving the set of RACH signals. In one aspect, the set of RACH resources spans multiple adjacent frequency resources over a single time resource, or the set of RACH resources spans multiple adjacent frequency resources over multiple time resources. In one aspect, operation 1520 may be performed by the receiver 352, the processing system 384, the memory component 386, and / or the positioning module 388, any or all of which may be considered as means for performing the operation.

[0174] By associating one SRS resource (or SRS resource set) with multiple RACH resources or multiple ROs, the technical advantage of methods 1400 and 1500 is to increase the transmission bandwidth of the RACH preamble code, thereby increasing the measurement resolution at the base station and the accuracy of the positioning estimation using the RACH preamble code.

[0175] Implementation examples are described in the numbered clauses below.

[0176] Clause 1. A wireless communication method performed by a UE, comprising: receiving a configuration of an SRS resource or an SRS resource set during a first state; obtaining an association relationship between the SRS resource or the SRS resource set and a group of RACH resources; and, outside the first state, sending a group of RACH signals using a transmission attribute based on the association relationship between the SRS resource or the SRS resource set and the group of RACH resources, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple time resources.

[0177] Clause 2. The method of clause 1, wherein the set of RACH resources corresponds to a plurality of RACH moments.

[0178] Clause 3. The method of clause 2, wherein each of the plurality of RACH moments is transmitted via a same transmit antenna port of the UE as the remaining RACH moments of the plurality of RACH moments.

[0179] Clause 4. A method according to any one of clauses 2 and 3, wherein each of the plurality of RACH moments is transmitted quasi-co-located in space with the remaining RACH moments in the plurality of RACH moments, has the same transmission power as the remaining RACH moments in the plurality of RACH moments, has the same timing as the remaining RACH moments in the plurality of RACH moments, or any combination thereof.

[0180] Clause 5. The method of clause 4, wherein the same transmission power is a transmission power associated with a first RACH instance of the plurality of RACH instances or a maximum transmission power of all RACH instances of the plurality of RACH instances.

[0181] Clause 6. A method according to any of clauses 2 to 5, wherein it is assumed that only RACH instances within the same RACH slot are transmitted on the same antenna port.

[0182] Clause 7. A method according to any of clauses 2 to 6, wherein it is assumed that only RACH times within a RACH slot of the same FR1 subframe or within a RACH slot of a FR2 subframe are transmitted on the same antenna port.

[0183] Clause 8. The method of any one of clauses 2 to 7, further comprising: receiving an index value for each RACH moment in a plurality of RACH moments.

[0184] Clause 9. The method of any one of clauses 2 to 7, further comprising: receiving an index value of a first RACH instant in a plurality of RACH instants; and receiving a pattern of the plurality of RACH instants.

[0185] Clause 10. The method according to clause 9, wherein the association relationship between the SRS resource or the SRS resource set and the set of RACH resources comprises an association relationship between the SRS resource or the SRS resource set and an index value of the first RACH time instant.

[0186] Clause 11. The method of any one of clauses 2 to 10, further comprising: receiving a RACH preamble index for all RACH moments in a plurality of RACH moments.

[0187] Clause 12. The method of any one of clauses 2 to 10, further comprising: receiving a RACH preamble index for each of a plurality of RACH moments.

[0188] Clause 13. A method according to any one of clauses 2 to 10, further comprising: receiving a plurality of RACH preamble indices for a plurality of RACH moments; and selecting a RACH preamble index from the plurality of RACH preamble indices for each of the plurality of RACH moments.

[0189] Clause 14. A method as described in any of clauses 2 to 13, wherein at least one RACH instance of the plurality of RACH instances is shared between positioning and initial access.

[0190] Clause 15. The method of clause 14, wherein sharing of at least one RACH instant between positioning and initial access is distinguished based on a RACH preamble index and / or a RACH configuration index associated with the at least one RACH instant.

[0191] Clause 16. A method as set forth in any of clauses 14 and 15, wherein the UE includes in the set of RACH signals an indication that at least one RACH instant is shared between positioning and initial access.

[0192] Clause 17. A method as set forth in any one of clauses 1 to 16, wherein all RACH resources in the set of RACH resources have the same RACH format.

[0193] Clause 18. A method according to any one of clauses 1 to 17, wherein: the first state comprises an RRC connected state, and the UE being outside the first state comprises the UE being in an RRC idle state or an RRC inactive state.

[0194] Clause 19. The method according to any one of clauses 1 to 18, wherein obtaining the association relationship comprises: receiving the association relationship during the first state, or determining the association relationship.

[0195] Clause 20. A method as defined in any one of clauses 1 to 19, further comprising receiving a configuration that the set of RACH resources may be used for positioning.

[0196] Clause 21. A method as described in any one of clauses 1 to 20, wherein the plurality of time resources comprises a plurality of adjacent time resources.

[0197] Clause 22. The method of clause 21, wherein: the plurality of frequency resources comprises a plurality of PRBs, the single time resource comprises a symbol, and the plurality of adjacent time resources comprises a plurality of adjacent symbols or a plurality of adjacent time slots.

[0198] Clause 23. A method according to any one of clauses 21 and 22, wherein: time resources in a plurality of adjacent time resources are not separated by gaps or are separated by gaps that are shorter than a threshold time amount, and the threshold time amount is such that no other channels can be transmitted during the gap.

[0199] Clause 24. A method according to any one of clauses 1 to 23, wherein the transmission attributes include: an uplink spatial transmission filter of an SRS resource or an SRS resource set, a path loss reference resource of an SRS resource or an SRS resource set, a path loss estimate of an SRS resource or an SRS resource set, a transmission power estimate of an SRS resource or an SRS resource set, a transmission timing of an SRS resource or an SRS resource set, an SCS of an SRS resource or an SRS resource set, a duration of an SRS resource or an SRS resource set, a transmission bandwidth of an SRS resource or an SRS resource set, or any combination thereof.

[0200] Clause 25. A method as described in any of clauses 1 to 24, wherein the set of RACH signals includes a set of RACH messages A, a set of RACH messages 1, a set of RACH messages 3, a set of DMRS for RACH messages A, or a set of DMRS for RACH messages 3.

[0201] Clause 26. A method as described in any of clauses 1 to 25, wherein the UE is involved in a positioning session with the TRP.

[0202] Clause 27. The method of clause 26, wherein the positioning session comprises a UL-TDOA session, a multi-RTT session, or a UL-AoA session.

[0203] Clause 28. A wireless communication method performed by a TRP, comprising: receiving an SRS on an SRS resource or an SRS resource set from a UE; and receiving a group of RACH signals from the UE, the group of RACH signals having a transmission attribute based on an association relationship between the SRS resource or the SRS resource set and a group of RACH resources for receiving the group of RACH signals, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans the multiple adjacent frequency resources on multiple time resources.

[0204] Clause 29. A method according to clause 28, wherein the TRP participates in a positioning session with the UE, the method further comprising: performing positioning measurements on the group of RACH signals.

[0205] Clause 30. A method as described in any one of clauses 28 and 29, wherein the set of RACH resources corresponds to a plurality of RACH moments.

[0206] Clause 31. The method of clause 30, wherein each of the plurality of RACH moments is transmitted via the same transmit antenna port of the UE as the remaining RACH moments of the plurality of RACH moments.

[0207] Clause 32. A method according to any one of clauses 30 and 31, wherein each of the plurality of RACH moments is transmitted quasi-co-located in space with the remaining RACH moments in the plurality of RACH moments, has the same transmission power as the remaining RACH moments in the plurality of RACH moments, has the same timing as the remaining RACH moments in the plurality of RACH moments, or any combination thereof.

[0208] Clause 33. The method of clause 32, wherein the same transmission power is a transmission power associated with a first RACH instance of the plurality of RACH instances or a maximum transmission power of all RACH instances of the plurality of RACH instances.

[0209] Clause 34. A method as defined in any of clauses 30 to 33, wherein only RACH instances within the same RACH slot are assumed to be transmitted on the same antenna port.

[0210] Clause 35. A method according to any of clauses 30 to 34, wherein it is assumed that only RACH timeslots within a RACH timeslot of the same FR1 subframe or within a RACH timeslot of a FR2 subframe are transmitted on the same antenna port.

[0211] Clause 36. A method as described in any of clauses 30 to 35, further comprising: sending an index value of each RACH time instance in the plurality of RACH time instances to the UE.

[0212] Clause 37. A method according to any one of clauses 30 to 35, further comprising: sending an index value of a first RACH moment in a plurality of RACH moments to the UE; and sending a pattern of the plurality of RACH moments to the UE.

[0213] Clause 38. A method according to clause 37, wherein the association relationship between the SRS resource or the SRS resource set and the set of RACH resources comprises an association relationship between the SRS resource or the SRS resource set and an index value of the first RACH time instant.

[0214] Clause 39. A method as described in any of clauses 30 to 38, further comprising: sending a RACH preamble code index for all RACH moments in the plurality of RACH moments to the UE.

[0215] Clause 40. A method as set forth in any one of clauses 30 to 38, further comprising: sending a RACH preamble index for each of a plurality of RACH moments to the UE.

[0216] Clause 41. A method according to any one of clauses 30 to 38, further comprising: sending a plurality of RACH preamble indexes for a plurality of RACH moments to a UE to configure the UE to select one of the plurality of RACH preamble indexes for each of the plurality of RACH moments.

[0217] Clause 42. A method as set forth in any one of clauses 30 to 41, wherein at least one RACH instance of the plurality of RACH instances is shared between positioning and initial access.

[0218] Clause 43. The method of clause 42, wherein sharing of at least one RACH instant between positioning and initial access is distinguished based on a RACH preamble index and / or a RACH configuration index associated with the at least one RACH instant.

[0219] Clause 44. The method of clause 42, wherein the indication in the set of RACH signals indicates sharing of at least one RACH instant between positioning and initial access.

[0220] Clause 45. A method as set forth in any one of clauses 28 to 44, wherein all RACH resources in the set of RACH resources have the same RACH format.

[0221] Clause 46. A method as described in any of clauses 28 to 45, wherein the first state comprises an RRC connected state.

[0222] Clause 47. A method according to any one of clauses 28 to 46, further comprising: sending the association relationship to the UE.

[0223] Clause 48. A method as described in any of clauses 28 to 47, further comprising: sending a configuration to the UE that the set of RACH resources may be used for positioning.

[0224] Clause 49. The method of any one of clauses 28 to 48, wherein the plurality of time resources comprises a plurality of adjacent time resources.

[0225] Clause 50. The method of clause 49, wherein: the plurality of frequency resources comprises a plurality of PRBs, the single time resource comprises a symbol, and the plurality of adjacent time resources comprises a plurality of adjacent symbols or a plurality of adjacent time slots.

[0226] Clause 51. A method according to any one of clauses 49 and 50, wherein: time resources in a plurality of adjacent time resources are not separated by gaps or are separated by gaps that are shorter than a threshold time amount, and the threshold time amount is such that no other channels can be transmitted during the gap.

[0227] Clause 52. A method according to any one of clauses 28 to 51, wherein the transmission attributes include: an uplink spatial transmission filter of an SRS resource or an SRS resource set, a path loss reference resource of an SRS resource or an SRS resource set, a path loss estimate of an SRS resource or an SRS resource set, a transmission power estimate of an SRS resource or an SRS resource set, a transmission timing of an SRS resource or an SRS resource set, an SCS of an SRS resource or an SRS resource set, a duration of an SRS resource or an SRS resource set, a transmission bandwidth of an SRS resource or an SRS resource set, or any combination thereof.

[0228] Clause 53. A method as described in any of clauses 28 to 52, wherein the set of RACH signals includes a set of RACH messages A, a set of RACH messages 1, a set of RACH messages 3, a set of DMRS for RACH messages A, or a set of DMRS for RACH messages 3.

[0229] Other implementation examples are described in the numbered clauses below.

[0230] Clause 1. A wireless communication method performed by a UE, comprising: receiving a configuration of an SRS resource or an SRS resource set during a first state; obtaining an association relationship between the SRS resource or the SRS resource set and a group of RACH resources; and, outside the first state, sending a group of RACH signals to a TRP using transmission attributes based on the association relationship between the SRS resource or the SRS resource set and the group of RACH resources, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple adjacent time resources.

[0231] Clause 2. The method of clause 1, wherein the set of RACH resources corresponds to a plurality of RACH moments.

[0232] Clause 3. The method of clause 2, wherein each of the plurality of RACH moments is transmitted via a same transmit antenna port of the UE as the remaining RACH moments of the plurality of RACH moments.

[0233] Clause 4. A method according to any one of clauses 2 and 3, wherein each of the plurality of RACH moments is transmitted quasi-co-located in space with the remaining RACH moments in the plurality of RACH moments, has the same transmission power as the remaining RACH moments in the plurality of RACH moments, has the same timing as the remaining RACH moments in the plurality of RACH moments, or any combination thereof.

[0234] Clause 5. The method of clause 4, wherein the same transmission power is a transmission power associated with a first RACH instance of the plurality of RACH instances or a maximum transmission power of all RACH instances of the plurality of RACH instances.

[0235] Clause 6. A method according to any of clauses 2 to 5, wherein it is assumed that only RACH instances within the same RACH slot are transmitted on the same antenna port.

[0236] Clause 7. A method according to any of clauses 2 to 6, wherein it is assumed that only RACH timeslots within the same FR1 subframe or within a 60 kHz FR2 timeslot are transmitted on the same antenna port.

[0237] Clause 8. The method of any one of clauses 2 to 7, further comprising: receiving an index value for each RACH moment in a plurality of RACH moments.

[0238] Clause 9. The method of any one of clauses 2 to 7, further comprising: receiving an index value of a first RACH moment in a plurality of RACH moments; and receiving a pattern of the plurality of RACH moments.

[0239] Clause 10. The method according to clause 9, wherein the association relationship between the SRS resource or the SRS resource set and the set of RACH resources comprises an association relationship between the SRS resource or the SRS resource set and an index value of the first RACH time instant.

[0240] Clause 11. The method of any one of clauses 2 to 10, further comprising: receiving a RACH preamble index for all RACH moments in a plurality of RACH moments.

[0241] Clause 12. The method of any one of clauses 2 to 10, further comprising: receiving a RACH preamble index for each of a plurality of RACH moments.

[0242] Clause 13. A method according to any one of clauses 2 to 10, further comprising: receiving a plurality of RACH preamble indices for a plurality of RACH moments; and selecting a RACH preamble index from the plurality of RACH preamble indices for each of the plurality of RACH moments.

[0243] Clause 14. A method as described in any of clauses 2 to 13, wherein at least one RACH instance of the plurality of RACH instances is shared between positioning and initial access.

[0244] Clause 15. The method of clause 14, wherein sharing of at least one RACH instant between positioning and initial access is distinguished based on a RACH preamble index and / or a RACH configuration index associated with the at least one RACH instant.

[0245] Clause 16. A method as set forth in any of clauses 14 and 15, wherein the UE includes in the set of RACH signals an indication that at least one RACH instant is shared between positioning and initial access.

[0246] Clause 17. A method as set forth in any one of clauses 1 to 16, wherein all RACH resources in the set of RACH resources have the same RACH format.

[0247] Clause 18. A method as described in any of clauses 1 to 17, wherein the first state comprises an RRC connected state.

[0248] Clause 19. The method according to any one of clauses 1 to 18, wherein obtaining the association relationship comprises: receiving the association relationship during the first state, or determining the association relationship.

[0249] Clause 20. A method as defined in any one of clauses 1 to 19, further comprising receiving a configuration that the set of RACH resources may be used for positioning.

[0250] Clause 21. A method as described in any of clauses 1 to 20, wherein the plurality of frequency resources comprises a plurality of PRBs.

[0251] Clause 22. The method of clause 21, wherein a single time resource comprises a symbol.

[0252] Clause 23. The method of any one of clauses 21 and 22, wherein the plurality of adjacent time resources comprises a plurality of adjacent symbols or a plurality of adjacent time slots.

[0253] Clause 24. The method of any one of clauses 1 to 23, wherein the plurality of adjacent time resources are not separated by gaps, or are separated by gaps that are shorter than a threshold amount of time.

[0254] Clause 25. The method of clause 24, wherein the threshold amount of time is such that no other channels may be transmitted during the gap.

[0255] Clause 26. A method according to any one of clauses 1 to 25, wherein the transmission attributes include: an uplink spatial transmission filter of an SRS resource or an SRS resource set, a path loss reference resource of an SRS resource or an SRS resource set, a path loss estimate of an SRS resource or an SRS resource set, a transmission power estimate of an SRS resource or an SRS resource set, a transmission timing of an SRS resource or an SRS resource set, an SCS of an SRS resource or an SRS resource set, a duration of an SRS resource or an SRS resource set, a transmission bandwidth of an SRS resource or an SRS resource set, or any combination thereof.

[0256] Clause 27. A method as described in any of clauses 1 to 26, wherein the group of RACH signals includes a group of RACH messages A, a group of RACH messages 1, a group of RACH messages 3, a group of DMRS for RACH messages A, or a group of DMRS for RACH messages 3.

[0257] Clause 28. A method as described in any of clauses 1 to 27, wherein the UE is involved in a positioning session with the TRP.

[0258] Clause 29. The method of clause 28, wherein the positioning session comprises an uplink time difference of arrival (UTDOA) session, a multi-RTT session, or an AoA session.

[0259] Clause 30. A wireless communication method performed by a TRP, comprising: receiving an SRS on an SRS resource or an SRS resource set from a UE; and receiving a group of RACH signals from the UE, the group of RACH signals having a transmission attribute based on an association relationship between the SRS resource or the SRS resource set and a group of RACH resources for receiving the group of RACH signals, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans multiple adjacent frequency resources on multiple adjacent time resources.

[0260] Clause 31. A method according to clause 30, wherein the TRP participates in a positioning session with the UE, the method further comprising: performing positioning measurements on the group of RACH signals.

[0261] Clause 32. A method as described in any one of clauses 30 and 31, wherein the set of RACH resources corresponds to a plurality of RACH moments.

[0262] Clause 33. The method of clause 32, wherein each of the plurality of RACH moments is transmitted via a same transmit antenna port of the UE as the remaining RACH moments of the plurality of RACH moments.

[0263] Clause 34. A method according to any one of clauses 32 and 33, wherein each of the plurality of RACH moments is transmitted quasi-co-located in space with the remaining RACH moments in the plurality of RACH moments, has the same transmission power as the remaining RACH moments in the plurality of RACH moments, has the same timing as the remaining RACH moments in the plurality of RACH moments, or any combination thereof.

[0264] Clause 35. The method of clause 34, wherein the same transmission power is a transmission power associated with a first RACH instance of the plurality of RACH instances or a maximum transmission power of all RACH instances of the plurality of RACH instances.

[0265] Clause 36. A method as defined in any of clauses 32 to 35, wherein only RACH instances within the same RACH timeslot are assumed to be transmitted on the same antenna port.

[0266] Clause 37. A method according to any of clauses 32 to 36, wherein it is assumed that only RACH timeslots within a RACH timeslot of the same FR1 subframe or within a 60kHz FR2 timeslot are transmitted on the same antenna port.

[0267] Clause 38. A method according to any one of clauses 32 to 37, further comprising: sending an index value of each RACH time instance in a plurality of RACH time instances to a UE.

[0268] Clause 39. A method according to any one of clauses 32 to 37, further comprising: sending an index value of a first RACH moment in a plurality of RACH moments to the UE; and sending a pattern of the plurality of RACH moments to the UE.

[0269] Clause 40. A method according to clause 39, wherein the association between the SRS resource or the SRS resource set and the set of RACH resources comprises an association between the SRS resource or the SRS resource set and an index value of the first RACH time instant.

[0270] Clause 41. A method as described in any of clauses 32 to 40, further comprising: sending a RACH preamble code index for all RACH moments in the plurality of RACH moments to the UE.

[0271] Clause 42. A method as defined in any one of clauses 32 to 40, further comprising: sending a RACH preamble index for each of a plurality of RACH moments to the UE.

[0272] Clause 43. A method according to any one of clauses 32 to 40, further comprising: sending a plurality of RACH preamble indexes for a plurality of RACH moments to a UE to configure the UE to select one of the plurality of RACH preamble indexes for each of the plurality of RACH moments.

[0273] Clause 44. A method as set forth in any of clauses 32 to 43, wherein at least one of the plurality of RACH instances is shared between positioning and initial access.

[0274] Clause 45. A method as set forth in clause 44, wherein sharing of at least one RACH instant between positioning and initial access is distinguished based on a RACH preamble index and / or a RACH configuration index associated with the at least one RACH instant.

[0275] Clause 46. A method as set forth in any of clauses 44 and 45, wherein the UE includes in the set of RACH signals an indication that at least one RACH instant is shared between positioning and initial access.

[0276] Clause 47. A method as set forth in any one of clauses 30 to 46, wherein all RACH resources in the set of RACH resources have the same RACH format.

[0277] Clause 48. A method as described in any of clauses 30 to 47, wherein the first state comprises an RRC connected state.

[0278] Clause 49. The method according to any one of clauses 30 to 48 further includes: sending the association relationship to the UE.

[0279] Clause 50. A method according to any one of clauses 30 to 49, further comprising: sending a configuration to the UE that the set of RACH resources may be used for positioning.

[0280] Clause 51. A method as defined in any one of clauses 30 to 50, wherein the plurality of frequency resources comprises a plurality of PRBs.

[0281] Clause 52. The method of clause 51, wherein a single time resource comprises a symbol.

[0282] Clause 53. A method as defined in any one of clauses 51 and 52, wherein the plurality of adjacent time resources comprises a plurality of adjacent symbols or a plurality of adjacent time slots.

[0283] Clause 54. The method of any of clauses 30 to 53, wherein the plurality of adjacent time resources are not separated by gaps, or are separated by gaps that are shorter than a threshold amount of time.

[0284] Clause 55. The method of clause 54, wherein the threshold amount of time is such that no other channels may be transmitted during the gap.

[0285] Clause 56. A method according to any one of clauses 30 to 55, wherein the transmission attributes include: an uplink spatial transmission filter of an SRS resource or an SRS resource set, a path loss reference resource of an SRS resource or an SRS resource set, a path loss estimate of an SRS resource or an SRS resource set, a transmission power estimate of an SRS resource or an SRS resource set, a transmission timing of an SRS resource or an SRS resource set, an SCS of an SRS resource or an SRS resource set, a duration of an SRS resource or an SRS resource set, a transmission bandwidth of an SRS resource or an SRS resource set, or any combination thereof.

[0286] Clause 57. A method as described in any of clauses 30 to 56, wherein the set of RACH signals includes a set of RACH messages A, a set of RACH messages 1, a set of RACH messages 3, a set of DMRS for RACH messages A, or a set of DMRS for RACH messages 3.

[0287] Those skilled in the art will appreciate that information and signals may be represented using any of a variety of different techniques and technologies. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned in the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0288] Further, it will be appreciated by those skilled in the art that the various illustrative logic blocks, modules, circuits and algorithmic steps described in conjunction with the various aspects disclosed herein may be implemented as electronic hardware, computer software or a combination thereof. In order to clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits and steps have been generally described above according to their functions. Whether such functions are implemented as hardware or software depends on specific applications and design constraints to the entire system. The technician may implement the described functions in different ways for each specific application, but these implementation decisions should not be interpreted as departing from the scope of the present disclosure.

[0289] The various illustrative logical blocks, modules, and circuits described in conjunction with the various aspects disclosed herein may be implemented or executed with a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors with a DSP core, or any other such configuration.

[0290] The methods, sequences and / or algorithms described in conjunction with the various aspects disclosed herein may be directly embodied in hardware, software modules executed by a processor, or a combination of the two. The software module may reside in a random access memory (RAM), flash memory, read-only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), registers, hard disks, removable hard disks, CD-ROMs, or any other form of storage medium known in the art. An example storage medium is coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. In an alternative, the storage medium may be integrated into a processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user equipment (e.g., UE). In an alternative, the processor and the storage medium may reside in a user equipment as discrete components.

[0291] In one or more example aspects, the functions described can be implemented in hardware, software, firmware or any combination thereof. If implemented in software, these functions can be stored or sent as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, including any media that helps to transfer a computer program from one place to another. Storage media can be any available media that can be accessed by a computer. As an example and not limiting, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage devices, disk storage devices or other magnetic storage devices, or any other media that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer. Moreover, any connection is appropriately referred to as a computer-readable medium. For example, if the software is sent from a website, a server or other remote source using a coaxial cable, an optical fiber cable, a twisted pair, a digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwaves, then coaxial cables, optical fiber cables, twisted pairs, DSL or wireless technologies such as infrared, radio and microwaves are included in the definition of the medium. Disk and disc, as used herein, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0292] Although the above disclosure shows the illustrative aspects of the present disclosure, it should be noted that various changes and modifications may be made without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and / or actions of the method claims according to the various aspects disclosed herein do not need to be performed in any particular order. In addition, although the elements of the present disclosure may be described or claimed in the singular, plural forms are also considered unless explicitly stated to be limited to the singular.

Claims

1. A wireless communication method performed by a user equipment UE, comprising: receiving a configuration of a sounding reference signal (SRS) resource or a set of SRS resources during a first state; Acquire an association relationship between the SRS resource or the SRS resource set and a group of random access channel RACH resources; as well as When outside the first state, a group of RACH signals are sent using a transmission attribute based on an association relationship between the SRS resource or the SRS resource set and the group of RACH resources, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans the multiple adjacent frequency resources on multiple time resources.

2. The method according to claim 1, wherein the set of RACH resources corresponds to multiple RACH time instants.

3. The method of claim 2, wherein each of the plurality of RACH moments is transmitted through a same transmit antenna port of the UE as the remaining RACH moments of the plurality of RACH moments.

4. The method of claim 2, wherein each of the plurality of RACH moments is transmitted quasi-co-located spatially with the remaining RACH moments in the plurality of RACH moments, has the same transmission power as the remaining RACH moments in the plurality of RACH moments, has the same timing as the remaining RACH moments in the plurality of RACH moments, or any combination thereof.

5. The method of claim 4, wherein the same transmission power is a transmission power associated with a first RACH moment in the plurality of RACH moments or a maximum transmission power over all RACH moments in the plurality of RACH moments.

6. The method according to claim 2, wherein it is assumed that only RACH instances within the same RACH time slot are transmitted on the same antenna port.

7. The method according to claim 2, wherein it is assumed that only RACH times within a RACH time slot of a subframe of the same frequency range 1 FR1 or within a RACH time slot of a subframe of the same frequency range 2 FR2 are transmitted on the same antenna port.

8. The method according to claim 2, further comprising: An index value of each RACH moment in the plurality of RACH moments is received.

9. The method according to claim 2, further comprising: receiving an index value of a first RACH time point among the plurality of RACH time points; as well as A pattern of the plurality of RACH moments is received.

10. The method according to claim 9, wherein the association relationship between the SRS resource or the SRS resource set and the group of RACH resources comprises an association relationship between the SRS resource or the SRS resource set and the index value of the first RACH moment.

11. The method according to claim 2, further comprising: A RACH preamble index of all RACH moments in the plurality of RACH moments is received.

12. The method according to claim 2, further comprising: A RACH preamble index for each RACH instant in the plurality of RACH instants is received.

13. The method according to claim 2, further comprising: receiving a plurality of RACH preamble indexes of the plurality of RACH moments; as well as One RACH preamble index among the plurality of RACH preamble indexes is selected for each RACH moment in the plurality of RACH moments.

14. The method of claim 2, wherein at least one of the plurality of RACH moments is shared between positioning and initial access.

15. The method of claim 14, wherein sharing the at least one RACH moment between positioning and initial access is distinguished based on a RACH preamble index and / or a RACH configuration index associated with the at least one RACH moment.

16. The method of claim 14, wherein the UE includes in the set of RACH signals an indication that the at least one RACH moment is shared between positioning and initial access.

17. The method of claim 1, wherein all RACH resources in the set of RACH resources have the same RACH format.

18. The method of claim 1, wherein: The first state includes a radio resource control (RRC) connection state, and The UE being outside the first state includes the UE being in an RRC idle state or an RRC inactive state.

19. The method according to claim 1, wherein obtaining the association relationship comprises: receiving the association during the first state, or The association relationship is determined.

20. The method of claim 1, further comprising: A configuration is received that the set of RACH resources may be used for positioning.

21. The method of claim 1, wherein the plurality of time resources comprises a plurality of adjacent time resources.

22. The method of claim 21, wherein: The plurality of adjacent frequency resources include a plurality of physical resource blocks (PRBs), The single time resource includes a symbol, and The plurality of adjacent time resources include a plurality of adjacent symbols or a plurality of adjacent time slots.

23. The method of claim 21, wherein: time resources in the plurality of adjacent time resources are not separated by gaps, or are separated by gaps that are shorter than a threshold amount of time, and The threshold amount of time enables no other channels to be transmitted during the gap.

24. The method of claim 1, wherein the transmission attributes include: an uplink spatial transmission filter of the SRS resource or SRS resource set, The path loss reference resource of the SRS resource or SRS resource set, a path loss estimate of the SRS resource or SRS resource set, a transmission power estimate of the SRS resource or SRS resource set, the transmission timing of the SRS resource or SRS resource set, The subcarrier spacing SCS of the SRS resource or SRS resource set, the duration of the SRS resource or SRS resource set, The transmission bandwidth of the SRS resource or SRS resource set, or Any combination thereof.

25. The method of claim 1, wherein the group of RACH signals comprises a group of RACH messages A, a group of RACH messages 1, a group of RACH messages 3, a group of demodulation reference signals (DMRS) of RACH messages A, or a group of DMRS of RACH messages 3.

26. The method of claim 1, wherein the UE participates in a positioning session with at least one TRP.

27. The method of claim 26, wherein the positioning session comprises an uplink time difference of arrival (UL-TDOA) session, a multi-round trip time (multi-RTT) session, or an uplink angle of arrival (UL-AoA) session.

28. A wireless communication method performed by a transmission receiving point TRP, comprising: Receiving a sounding reference signal SRS on a SRS resource or an SRS resource set from a user equipment UE; as well as A set of random access channel (RACH) signals is received from the UE, wherein the set of RACH signals has a transmission property based on an association relationship between the SRS resource or the SRS resource set and a set of RACH resources on which the set of RACH signals are received, wherein the set of RACH resources spans a plurality of adjacent frequency resources on a single time resource, or the set of RACH resources spans the plurality of adjacent frequency resources on a plurality of time resources.

29. The method of claim 28, wherein the TRP participates in a positioning session with the UE, the method further comprising: Perform positioning measurement on the set of RACH signals.

30. The method of claim 28, wherein the set of RACH resources corresponds to a plurality of RACH moments.

31. The method of claim 30, wherein each of the plurality of RACH moments is transmitted through a same transmit antenna port of the UE as the remaining RACH moments of the plurality of RACH moments.

32. The method of claim 30, wherein each of the plurality of RACH moments is transmitted quasi-co-located spatially with the remaining RACH moments in the plurality of RACH moments, has the same transmission power as the remaining RACH moments in the plurality of RACH moments, has the same timing as the remaining RACH moments in the plurality of RACH moments, or any combination thereof.

33. The method of claim 32, wherein the same transmission power is a transmission power associated with a first RACH instance of the plurality of RACH instances or a maximum transmission power over all RACH instances of the plurality of RACH instances.

34. The method of claim 30, wherein only RACH instances within the same RACH slot are assumed to be transmitted on the same antenna port.

35. The method according to claim 30, wherein it is assumed that only RACH times within a RACH time slot of a subframe of the same frequency range 1 FR1 or within a RACH time slot of a subframe of the same frequency range 2 FR2 are transmitted on the same antenna port.

36. The method of claim 30, further comprising: An index value of each RACH time point in the multiple RACH time points is sent to the UE.

37. The method of claim 30, further comprising: Sending an index value of a first RACH time point among the multiple RACH time points to the UE; as well as A pattern of sending the multiple RACH moments to the UE.

38. The method according to claim 37, wherein the association relationship between the SRS resource or the SRS resource set and the group of RACH resources comprises an association relationship between the SRS resource or the SRS resource set and the index value of the first RACH moment.

39. The method of claim 30, further comprising: A RACH preamble index of all RACH moments in the plurality of RACH moments is sent to the UE.

40. The method of claim 30, further comprising: A RACH preamble index for each RACH moment in the plurality of RACH moments is sent to the UE.

41. The method of claim 30, further comprising: A plurality of RACH preamble indexes of the plurality of RACH moments are sent to the UE to configure the UE to select one RACH preamble index of the plurality of RACH preamble indexes for each RACH moment in the plurality of RACH moments.

42. The method of claim 30, wherein at least one of the plurality of RACH moments is shared between positioning and initial access.

43. The method of claim 42, wherein sharing the at least one RACH moment between positioning and initial access is distinguished based on a RACH preamble index and / or a RACH configuration index associated with the at least one RACH moment.

44. The method of claim 42, wherein the indication in the set of RACH signals indicates that the at least one RACH time instant is shared between positioning and initial access.

45. The method of claim 28, wherein all RACH resources in the set of RACH resources have the same RACH format.

46. ​​The method of claim 28, further comprising: Send the association relationship to the UE.

47. The method of claim 28, further comprising: A configuration enabling the set of RACH resources to be used for positioning is sent to the UE.

48. The method of claim 28, wherein the plurality of time resources comprises a plurality of adjacent time resources.

49. The method of claim 48, wherein: The plurality of adjacent frequency resources include a plurality of physical resource blocks (PRBs), The single time resource includes a symbol, and The plurality of adjacent time resources include a plurality of adjacent symbols or a plurality of adjacent time slots.

50. The method of claim 48, wherein: time resources in the plurality of adjacent time resources are not separated by gaps, or are separated by gaps that are shorter than a threshold amount of time, and The threshold amount of time enables no other channels to be transmitted during the gap.

51. The method of claim 28, wherein the transmission attributes include: an uplink spatial transmission filter of the SRS resource or SRS resource set, The path loss reference resource of the SRS resource or SRS resource set, a path loss estimate of the SRS resource or SRS resource set, a transmission power estimate of the SRS resource or SRS resource set, the transmission timing of the SRS resource or SRS resource set, The subcarrier spacing SCS of the SRS resource or SRS resource set, the duration of the SRS resource or SRS resource set, The transmission bandwidth of the SRS resource or SRS resource set, or Any combination thereof.

52. The method of claim 28, wherein the group of RACH signals comprises a group of RACH messages A, a group of RACH messages 1, a group of RACH messages 3, a group of demodulation reference signals (DMRS) of RACH messages A, or a group of DMRS of RACH messages 3.

53. A user equipment UE, comprising: Memory; at least one transceiver; as well as at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to: receiving a configuration of a sounding reference signal (SRS) resource or a set of SRS resources during a first state; Acquire an association relationship between the SRS resource or the SRS resource set and a group of random access channel RACH resources; as well as When outside the first state, a group of RACH signals are sent using a transmission attribute based on an association relationship between the SRS resource or the SRS resource set and the group of RACH resources, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans the multiple adjacent frequency resources on multiple time resources.

54. The UE according to claim 53, wherein the set of RACH resources corresponds to a plurality of RACH moments.

55. The UE of claim 54, wherein each of the plurality of RACH moments is transmitted through a same transmit antenna port of the UE as the remaining RACH moments of the plurality of RACH moments.

56. The UE of claim 54, wherein each of the multiple RACH moments is transmitted quasi-co-located spatially with the remaining RACH moments in the multiple RACH moments, has the same transmission power as the remaining RACH moments in the multiple RACH moments, has the same timing as the remaining RACH moments in the multiple RACH moments, or any combination thereof.

57. The UE of claim 56, wherein the same transmission power is a transmission power associated with a first RACH instance of the plurality of RACH instances or a maximum transmission power over all RACH instances of the plurality of RACH instances.

58. The UE of claim 54, wherein only RACH instances within the same RACH slot are assumed to be transmitted on the same antenna port.

59. The UE according to claim 54, wherein it is assumed that only RACH timestamps within a RACH time slot of a subframe of the same frequency range 1 FR1 or within a RACH time slot of a subframe of the same frequency range 2 FR2 are transmitted on the same antenna port.

60. The UE of claim 54, wherein the at least one processor is further configured to: An index value of each RACH moment in the plurality of RACH moments is received.

61. The UE of claim 54, wherein the at least one processor is further configured to: receiving an index value of a first RACH time among the plurality of RACH time points; and A pattern of the plurality of RACH moments is received.

62. The UE according to claim 61, wherein the association relationship between the SRS resource or the SRS resource set and the set of RACH resources comprises an association relationship between the SRS resource or the SRS resource set and the index value of the first RACH moment.

63. The UE of claim 54, wherein the at least one processor is further configured to: A RACH preamble index of all RACH moments in the plurality of RACH moments is received.

64. The UE of claim 54, wherein the at least one processor is further configured to: A RACH preamble index for each RACH instant in the plurality of RACH instants is received.

65. The UE of claim 54, wherein the at least one processor is further configured to: receiving a plurality of RACH preamble indexes of the plurality of RACH moments; and One RACH preamble index among the plurality of RACH preamble indexes is selected for each RACH moment in the plurality of RACH moments.

66. The UE of claim 54, wherein at least one of the plurality of RACH moments is shared between positioning and initial access.

67. The UE of claim 66, wherein sharing the at least one RACH moment between positioning and initial access is distinguished based on a RACH preamble index and / or a RACH configuration index associated with the at least one RACH moment.

68. The UE of claim 66, wherein the UE includes in the set of RACH signals an indication that the at least one RACH moment is shared between positioning and initial access.

69. The UE of claim 53, wherein all RACH resources in the set of RACH resources have the same RACH format.

70. The UE of claim 53, wherein: The first state includes a radio resource control (RRC) connection state, and The UE being outside the first state includes the UE being in an RRC idle state or an RRC inactive state.

71. The UE according to claim 53, wherein the at least one processor is configured to obtain the association relationship comprises the at least one processor being configured to: receiving the association during the first state, or The association relationship is determined.

72. The UE of claim 53, wherein the at least one processor is further configured to: A configuration is received that enables the set of RACH resources to be used for positioning.

73. The UE of claim 53, wherein the plurality of time resources comprises a plurality of adjacent time resources.

74. The UE of claim 73, wherein: The plurality of adjacent frequency resources include a plurality of physical resource blocks (PRBs), The single time resource includes a symbol, and The plurality of adjacent time resources include a plurality of adjacent symbols or a plurality of adjacent time slots.

75. The UE of claim 73, wherein: time resources in the plurality of adjacent time resources are not separated by gaps, or are separated by gaps that are shorter than a threshold amount of time, and The threshold amount of time enables no other channels to be transmitted during the gap.

76. The UE of claim 53, wherein the transmission attributes include: an uplink spatial transmission filter of the SRS resource or SRS resource set, The path loss reference resource of the SRS resource or SRS resource set, a path loss estimate of the SRS resource or SRS resource set, a transmission power estimate of the SRS resource or SRS resource set, the transmission timing of the SRS resource or SRS resource set, The subcarrier spacing SCS of the SRS resource or SRS resource set, the duration of the SRS resource or SRS resource set, The transmission bandwidth of the SRS resource or SRS resource set, or Any combination thereof.

77. The UE according to claim 53, wherein the group of RACH signals includes a group of RACH messages A, a group of RACH messages 1, a group of RACH messages 3, a group of demodulation reference signals DMRS of RACH message A, or a group of DMRS of RACH message 3.

78. A UE according to claim 53, wherein the UE participates in a positioning session with at least one TRP.

79. The UE of claim 78, wherein the positioning session comprises an uplink time difference of arrival (UL-TDOA) session, a multi-round trip time (multi-RTT) session, or an uplink angle of arrival (UL-AoA) session.

80. A transmission receiving point TRP, comprising: Memory; at least one transceiver; as well as at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to: Receiving a sounding reference signal SRS on a SRS resource or an SRS resource set from a user equipment UE; as well as A set of random access channel (RACH) signals is received from the UE, wherein the set of RACH signals has a transmission property based on an association relationship between the SRS resource or the SRS resource set and a set of RACH resources on which the set of RACH signals are received, wherein the set of RACH resources spans a plurality of adjacent frequency resources on a single time resource, or the set of RACH resources spans the plurality of adjacent frequency resources on a plurality of time resources.

81. The TRP of claim 80, wherein: The TRP participates in a positioning session with the UE, and The at least one processor is further configured to perform positioning measurements on the set of RACH signals.

82. The TRP of claim 80, wherein the set of RACH resources corresponds to a plurality of RACH moments.

83. A TRP according to claim 82, wherein each of the multiple RACH moments is sent through the same transmission antenna port of the UE as the remaining RACH moments in the multiple RACH moments.

84. The TRP of claim 82, wherein each of the multiple RACH moments is transmitted quasi-co-located in space with the remaining RACH moments in the multiple RACH moments, has the same transmission power as the remaining RACH moments in the multiple RACH moments, has the same timing as the remaining RACH moments in the multiple RACH moments, or any combination thereof.

85. A TRP according to claim 84, wherein the same transmission power is a transmission power associated with a first RACH moment among the multiple RACH moments or a maximum transmission power over all RACH moments of the multiple RACH moments.

86. A TRP according to claim 82, wherein it is assumed that only RACH moments within the same RACH time slot are transmitted on the same antenna port.

87. TRP according to claim 82, wherein it is assumed that only RACH times within the RACH time slot of the same frequency range 1FR1 subframe or the RACH time within the frequency range 2FR2 time slot are transmitted on the same antenna port.

88. The TRP of claim 82, wherein the at least one processor is further configured to: The at least one transceiver is enabled to send an index value of each RACH time instant in the plurality of RACH time instants to the UE.

89. The TRP of claim 82, wherein the at least one processor is further configured to: causing the at least one transceiver to send an index value of a first RACH time point among the multiple RACH time points to the UE; and The at least one transceiver is caused to send a pattern of the plurality of RACH moments to the UE.

90. The TRP according to claim 89, wherein the association relationship between the SRS resource or the SRS resource set and the set of RACH resources includes an association relationship between the SRS resource or the SRS resource set and the index value of the first RACH moment.

91. The TRP of claim 82, wherein the at least one processor is further configured to: The at least one transceiver is caused to send a RACH preamble index of all RACH moments in the plurality of RACH moments to the UE.

92. The TRP of claim 82, wherein the at least one processor is further configured to: The at least one transceiver is caused to send a RACH preamble code index for each RACH time instance in the plurality of RACH time instances to the UE.

93. The TRP of claim 82, wherein the at least one processor is further configured to: The at least one transceiver is caused to send a plurality of RACH preamble indexes of the plurality of RACH moments to the UE to configure the UE to select one RACH preamble index of the plurality of RACH preamble indexes for each RACH moment in the plurality of RACH moments.

94. The TRP of claim 82, wherein at least one of the multiple RACH moments is shared between positioning and initial access.

95. A TRP according to claim 94, wherein sharing the at least one RACH moment between positioning and initial access is distinguished based on a RACH preamble code index and / or a RACH configuration index associated with the at least one RACH moment.

96. A TRP according to claim 94, wherein an indication in the set of RACH signals indicates that the at least one RACH moment is shared between positioning and initial access.

97. The TRP of claim 80, wherein all RACH resources in the set of RACH resources have the same RACH format.

98. The TRP of claim 80, wherein the at least one processor is further configured to: The at least one transceiver is caused to send the association relationship to the UE.

99. The TRP of claim 80, wherein the at least one processor is further configured to: The at least one transceiver is caused to send a configuration to the UE enabling the set of RACH resources to be used for positioning.

100. The TRP of claim 80, wherein the plurality of time resources comprises a plurality of adjacent time resources.

101. The TRP of claim 100, wherein: The plurality of adjacent frequency resources include a plurality of physical resource blocks (PRBs), The single time resource includes a symbol, and The plurality of adjacent time resources include a plurality of adjacent symbols or a plurality of adjacent time slots.

102. The TRP of claim 100, wherein: time resources in the plurality of adjacent time resources are not separated by gaps, or are separated by gaps that are shorter than a threshold amount of time, and The threshold amount of time enables no other channels to be transmitted during the gap.

103. The TRP of claim 80, wherein the transmission attributes include: an uplink spatial transmission filter of the SRS resource or SRS resource set, The path loss reference resource of the SRS resource or SRS resource set, a path loss estimate of the SRS resource or SRS resource set, a transmission power estimate of the SRS resource or SRS resource set, the transmission timing of the SRS resource or SRS resource set, The subcarrier spacing SCS of the SRS resource or SRS resource set, the duration of the SRS resource or SRS resource set, The transmission bandwidth of the SRS resource or SRS resource set, or Any combination thereof.

104. The TRP according to claim 80, wherein the group of RACH signals includes a group of RACH messages A, a group of RACH messages 1, a group of RACH messages 3, a group of demodulation reference signals DMRS of RACH message A, or a group of DMRS of RACH message 3.

105. A user equipment UE, comprising: means for receiving a configuration of a sounding reference signal (SRS) resource or a set of SRS resources during a first state; A component for acquiring an association relationship between the SRS resource or the SRS resource set and a group of random access channel RACH resources; as well as A means for transmitting a set of RACH signals using a transmission attribute based on an association relationship between the SRS resource or the SRS resource set and the set of RACH resources when outside the first state, wherein the set of RACH resources spans a plurality of adjacent frequency resources over a single time resource, or the set of RACH resources spans the plurality of adjacent frequency resources over a plurality of time resources.

106. A transmission receiving point TRP, comprising: A component for receiving a sounding reference signal SRS on a SRS resource or an SRS resource set from a user equipment UE; as well as A means for receiving a set of random access channel (RACH) signals from the UE, the set of RACH signals having a transmission attribute based on an association relationship between the SRS resource or the SRS resource set and a set of RACH resources on which the set of RACH signals are received, wherein the set of RACH resources spans a plurality of adjacent frequency resources on a single time resource, or the set of RACH resources spans the plurality of adjacent frequency resources on a plurality of time resources.

107. A non-transitory computer-readable medium storing computer-executable instructions, the computer-executable instructions comprising: Instructing a user equipment UE to receive at least one instruction for configuring a sounding reference signal SRS resource or an SRS resource set during a first state; At least one instruction for instructing the UE to obtain an association relationship between the SRS resource or the SRS resource set and a group of random access channel RACH resources; as well as and instructing the UE to send at least one instruction of a set of RACH signals using a transmission attribute based on an association relationship between the SRS resource or the SRS resource set and the set of RACH resources when the UE is outside the first state, wherein the set of RACH resources spans a plurality of adjacent frequency resources on a single time resource, or the set of RACH resources spans the plurality of adjacent frequency resources on a plurality of time resources.

108. A non-transitory computer-readable medium storing computer-executable instructions, the computer-executable instructions comprising: The instruction sending and receiving point TRP receives at least one instruction of a sounding reference signal SRS resource or an SRS on an SRS resource set from a user equipment UE; as well as Instruct the TRP to receive at least one instruction of a group of random access channel (RACH) signals from the UE, wherein the group of RACH signals has a transmission attribute based on an association relationship between the SRS resource or the SRS resource set and a group of RACH resources on which the group of RACH signals are received, wherein the group of RACH resources spans multiple adjacent frequency resources on a single time resource, or the group of RACH resources spans the multiple adjacent frequency resources on multiple time resources.

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