WO2024239713A1

WO2024239713A1 - Method and apparatus of supporting uplink communications

Info

Publication number: WO2024239713A1
Application number: PCT/CN2024/075446
Authority: WO
Inventors: Wei Ling; Chenxi Zhu; Bingchao LIU
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2024-02-02
Filing date: 2024-02-02
Publication date: 2024-11-28
Anticipated expiration: 2026-08-02

Abstract

Various aspects of the present disclosure relate to a method and apparatus of supporting uplink communications. An exemplary method performed by a UE may include: receiving information indicating one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions in an activated BWP of a serving cell; and determining a priority of power allocation of a first UL transmission associated with a first TRP and a priority of power allocation of a second UL transmission associated with a second TRP at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.

Description

METHOD AND APPARATUS OF SUPPORTING UPLINK COMMUNICATIONS

TECHNICAL FIELD

The present disclosure relates to wireless communications, and more specifically to techniques for uplink communications.

BACKGROUND

A wireless communications system may include one or multiple network communication devices, such as base stations, which may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE) , or other suitable terminology. The wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers, or the like) . Additionally, the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G) ) .

SUMMARY

An article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements. The terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” or “one or both of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. Further, as used herein, including in the claims, a “set” may include one or more elements.

Some implementations of the methods and apparatuses described herein may further include a UE for wireless communication, which includes: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the UE to:receive information indicating one indicated transmission configuration indication (TCI) state for downlink (DL) receptions and multiple indicated TCI states for uplink (UL) transmissions in an activated bandwidth part (BWP) of a serving cell; determine a priority of power allocation of a first UL transmission associated with a first transmission-reception point (TRP) and a priority of power allocation of a second UL transmission associated with a second TRP at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.

In some implementations of the methods and apparatuses described herein, the first predefined rule defines that the priority of power allocation of a UL transmission associated with the first type TRP is higher than the priority of power allocation of a UL transmission associated with the second type TRP.

In some implementations of the methods and apparatuses described herein, after determining the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission in accordance with the first predefined rule, the at least one processor is configured to cause the UE to: determine the priority of power allocation of the first UL transmission in accordance with a second predefined rule regardless of TRP type in the case that there is a third UL transmission associated with the first TRP overlapping with the first UL transmission; or determine the priority of power allocation of the second UL transmission in accordance with a second predefined rule regardless of TRP type in the case that there is a fourth UL transmission associated with the second TRP overlapping with the second UL transmission.

In some implementations of the methods and apparatuses described herein, the at least one processor is configured to cause the UE to: determine the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission in accordance with a second predefined rule regardless of TRP type; and determine the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission in accordance with the first predefined rule in the case that the first UL transmission and the second UL transmission have a same priority of power allocation in accordance with a second predefined rule regardless of TRP type.

In some implementations of the methods and apparatuses described herein, before determining the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission, the at least one processor is configured to cause the UE to: determine to transmit the first UL transmission and drop overlapped symbols of a sounding reference signal (SRS) overlapping with the first UL transmission, wherein the first UL transmission is a physical uplink control channel (PUCCH) resource and SRS resource is associated with the second TRP.

In some implementations of the methods and apparatuses described herein, before determining the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission, the at least one processor is configured to cause the UE to: determine to transmit the first UL transmission and drop a PUCCH resource overlapping with the first UL transmission, wherein the first UL transmission is a SRS resource, and the PUCCH resource is associated with the second TRP.

In some implementations of the methods and apparatuses described herein, before determining the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission, the at least one processor is configured to cause the UE to: determine to transmit the second UL transmission and drop overlapped symbols of a SRS resource overlapping with the second UL transmission, wherein the second UL transmission is a PUCCH resource carrying one or more of hybrid automatic repeat request-acknowledge (HARQ-ACK) , link recovery request (LRR) and scheduling request (SR) , and the SRS resource is associated with the first TRP.

In some implementations of the methods and apparatuses described herein, before determining the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission, the at least one processor is configured to cause the UE to: determine to transmit the first UL transmission and drop a PUCCH resource carrying none of HARQ-ACK, LRR and SR overlapping with the first UL transmission, wherein the first UL transmission is SRS resource, and the PUCCH resource is associated with the second TRP.

In some implementations of the methods and apparatuses described herein, the at least one processor is configured to cause the UE: determine a UL transmission is associated with the first TRP in the case that a pathloss offset associated with a TCI state of a UL transmission is configured to be 0 dB or no pathloss offset is associated with the TCI state of the UL transmission; otherwise, determine the UL transmission is associated with the second type TRP.

In some implementations of the methods and apparatuses described herein, the at least one processor is configured to cause the UE to: determine whether a UL transmission is associated with the first TRP or the second TRP based on a radio resource control (RRC) parameter configured in a TCI state of the UL transmission.

In some implementations of the methods and apparatuses described herein, a first indicated TCI state of the multiple indicated TCI states for UL transmissions is associated with the first type TRP and a second indicated TCI state of the multiple indicated TCI states for UL transmissions is associated with the second type TRP, and the at least one processor is configured to cause the UE to: determine whether a UL transmission is associated with the first TRP or the second TRP respectively based on an indicated TCI state of the UL transmission in the case the UL transmission is a PUCCH, a physical uplink shared channel (PUSCH) or an aperiodic SRS resource which is configured to follow one of the multiple indicated TCI states for UL transmissions; or determine whether a UL transmission is associated with the first TRP or the second TRP based on a RRC parameter configured for a SRS resource or a SRS resource set including the SRS resource in the case that the UL transmission is a SRS resource which is not configured to follow one of the multiple indicated TCI states for UL transmissions.

Some implementations of the methods and apparatuses described herein may further include a processor for wireless communication, which includes: at least one controller coupled with at least one memory and configured to cause the processor to: receive information indicating one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions in an activated BWP of a serving cell; and determine a priority of power allocation of a first UL transmission associated with a first TRP and a priority of power allocation of a second UL transmission associated with a second TRP at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.

Some implementations of the methods and apparatuses described herein may further include a network equipment (NE) for wireless communication, which includes: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the NE to: transmit information indicating one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions in an activated BWP of a serving cell; and receive a first UL transmission associated with a first TRP and a second UL transmission associated with a second TRP, wherein, a priority of power allocation of the first UL transmission and a priority of power allocation of the second UL transmission are determined at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.

Some implementations of the methods and apparatuses described herein may further include a method performed by a UE, which includes: receiving information indicating one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions in an activated BWP of a serving cell; and determining a priority of power allocation of a first UL transmission associated with a first TRP and a priority of power allocation of a second UL transmission associated with a second TRP at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 illustrates an example of a wireless communications system in accordance with aspects of the present disclosure.

Figure 2 illustrates an example of a UE in accordance with aspects of the present disclosure.

Figure 3 illustrates an example of a processor in accordance with aspects of the present disclosure.

Figure 4 illustrates an example of a NE in accordance with aspects of the present disclosure.

Figure 5 illustrates a flowchart of method performed by a UE in accordance with aspects of the present disclosure.

Figure 6 illustrates a flowchart of method performed by a NE in accordance with aspects of the present disclosure.

DETAILED DESCRIPTION

As a research topic for 3^rd generation partnership project (3GPP) release (R) 19, enhancements for asymmetric DL single TRP (sTRP or S-TRP) and UL multiple (mTRP or M-TRP) (referred to as DL sTRP/UL mTRP or the like) deployment scenarios will be specified for heterogeneous network to improve UL throughput. Regarding an asymmetric DL sTRP/UL mTRP deployment scenario, it means all DL channels or signals will be transmitted from only one TRP, while UL channels or signals will be received with multiple, e.g., two TRPs in accordance with RRC configurations or downlink control information (DCI) indication etc. Accordingly, there are various technical problems to be solved to enhance asymmetric DL sTRP/UL mTRP deployment scenarios, for example, issues on prioritizations for transmission power reductions and prioritizations for overlapped PUCCH and SRS transmissions in asymmetric DL sTRP/UL mTRP deployment scenarios.

At least in view of the aforementioned issues, aspects of the present disclosure provide a technical solution of supporting uplink communications, e.g., a method and apparatus of supporting uplink communications in asymmetric DL sTRP/UL mTRP deployment scenarios or other similar asymmetric TRP deployment scenarios.

For example, in accordance with aspects of the present disclosure, in asymmetric DL sTRP/UL mTRP deployment scenarios or the like, the network side, e.g., a NE will transmit information indicating one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions in an activated BWP of a serving cell, e.g., by a media access control (MAC) control element (CE) and DCI (if necessary) . Accordingly, UE will receive the information indicating one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions, and then determine the one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions.

In addition, in accordance with aspects of the present disclosure, there are two TRP types, wherein the first type TRP is a TRP at least associated with the one indicated TCI state for DL receptions, and the second type TRP is a TRP associated with one of the multiple indicated TCI states for UL transmissions. UE will determine whether a UL transmission is associated with the first type TRP or the second type TRP.

In the case that there are overlapped UL transmissions, UE will determine which one of the overlapped UL transmissions will be transmitted. For example, in the case that there are overlapped PUCCH and SRS, which are respectively associated with the first type TRP and second type TRP, various aspects of the present disclosure provide technical solutions for UE to determine whether the PUCCH or the SRS will be transmitted.

For overlapped UL transmissions determined to be transmitted, UE may also need to prioritize transmission power reductions (or, power allocations) in some cases, e.g., a total UE transmission power for the overlapped UL transmissions exceeds the maximal transmission power. For example, in the case that a first UL transmission associated with the first type TRP and a second UL transmission associated with the second type TRP are overlapped, e.g., in at least one symbol, various aspects of the present disclosure also provide technical solutions for UE to determine a priority of power allocation of the first UL transmission and a priority of power allocation of the second UL transmission at least in accordance with a predefined rule associated with TRP type. An exemplary predefined rule associated with TRP type may be that: the priority of power allocation of a UL transmission associated with the first type TRP is higher than the priority of power allocation of a UL transmission associated with the second type TRP.

Aspects of the present disclosure are described in the context of a wireless communications system.

Figure 1 illustrates an example of a wireless communications system 100 in accordance with aspects of the present disclosure. The wireless communications system 100 may include one or more NE 102, one or more UE 104, and a core network (CN) 106. The wireless communications system 100 may support various radio access technologies. In some implementations, the wireless communications system 100 may be a 4G network, such as an LTE network or an LTE-Advanced (LTE-A) network. In some other implementations, the wireless communications system 100 may be a NR network, such as a 5G network, a 5G-Advanced (5G-A) network, or a 5G ultrawideband (5G-UWB) network. In other implementations, the wireless communications system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20. The wireless communications system 100 may support radio access technologies beyond 5G, for example, 6G. Additionally, the wireless communications system 100 may support technologies, such as time division multiple access (TDMA) , frequency division multiple access (FDMA) , or code division multiple access (CDMA) , etc.

The one or more NE 102 may be dispersed throughout a geographic region to form the wireless communications system 100. One or more of the NE 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a network function, a network entity, a radio access network (RAN) , a NodeB, an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. An NE 102 and a UE 104 may communicate via a communication link, which may be a wireless or wired connection. For example, an NE 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.

An NE 102 may provide a geographic coverage area for which the NE 102 may support services for one or more UEs 104 within the geographic coverage area. For example, an NE 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc. ) according to one or multiple radio access technologies. In some implementations, an NE 102 may be moveable, for example, a satellite associated with a non-terrestrial network (NTN) . In some implementations, different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but the different geographic coverage areas may be associated with different NE 102.

The one or more UE 104 may be dispersed throughout a geographic region of the wireless communications system 100. A UE 104 may include or may be referred to as a remote unit, a mobile device, a wireless device, a remote device, a subscriber device, a transmitter device, a receiver device, or some other suitable terminology. In some implementations, the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an Internet-of-Things (IoT) device, an Internet-of-Everything (IoE) device, or machine-type communication (MTC) device, among other examples.

A UE 104 may be able to support wireless communication directly with other UEs 104 over a communication link. For example, a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link 114 may be referred to as a sidelink. For example, a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.

An NE 102 may support communications with the CN 106, or with another NE 102, or both. For example, an NE 102 may interface with other NE 102 or the CN 106 through one or more backhaul links (e.g., S1, N2, N2, or network interface) . In some implementations, the NE 102 may communicate with each other directly. In some other implementations, the NE 102 may communicate with each other or indirectly (e.g., via the CN 106. In some implementations, one or more NE 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC) . An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs) .

The CN 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. The CN 106 may be an evolved packet core (EPC) , or a 5G core (5GC) , which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management functions (AMF) ) and a user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . In some implementations, the control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc. ) for the one or more UEs 104 served by the one or more NE 102 associated with the CN 106.

The CN 106 may communicate with a packet data network over one or more backhaul links (e.g., via an S1, N2, N2, or another network interface) . The packet data network may include an application server. In some implementations, one or more UEs 104 may communicate with the application server. A UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the CN 106 via an NE 102. The CN 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server using the established session (e.g., the established PDU session) . The PDU session may be an example of a logical connection between the UE 104 and the CN 106 (e.g., one or more network functions of the CN 106) .

In the wireless communications system 100, the NEs 102 and the UEs 104 may use resources of the wireless communications system 100 (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) ) to perform various operations (e.g., wireless communications) . In some implementations, the NEs 102 and the UEs 104 may support different resource structures. For example, the NEs 102 and the UEs 104 may support different frame structures. In some implementations, such as in 4G, the NEs 102 and the UEs 104 may support a single frame structure. In some other implementations, such as in 5G and among other suitable radio access technologies, the NEs 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures) . The NEs 102 and the UEs 104 may support various frame structures based on one or more numerologies.

One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix. A first numerology (e.g., μ=0) may be associated with a first subcarrier spacing (e.g., 15 kHz) and a normal cyclic prefix. In some implementations, the first numerology (e.g., μ=0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe. A second numerology (e.g., μ=1) may be associated with a second subcarrier spacing (e.g., 30 kHz) and a normal cyclic prefix. A third numerology (e.g., μ=2) may be associated with a third subcarrier spacing (e.g., 60 kHz) and a normal cyclic prefix or an extended cyclic prefix. A fourth numerology (e.g., μ=3) may be associated with a fourth subcarrier spacing (e.g., 120 kHz) and a normal cyclic prefix. A fifth numerology (e.g., μ=4) may be associated with a fifth subcarrier spacing (e.g., 240 kHz) and a normal cyclic prefix.

A time interval of a resource (e.g., a communication resource) may be organized according to frames (also referred to as radio frames) . Each frame may have a duration, for example, a 10 millisecond (ms) duration. In some implementations, each frame may include multiple subframes. For example, each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration. In some implementations, each frame may have the same duration. In some implementations, each subframe of a frame may have the same duration.

Additionally or alternatively, a time interval of a resource (e.g., a communication resource) may be organized according to slots. For example, a subframe may include a number (e.g., quantity) of slots. The number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communications system 100. For instance, the first, second, third, fourth, and fifth numerologies (i.e., μ=0, μ=1, μ=2, μ=3, μ=4) associated with respective subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot may include a number (e.g., quantity) of symbols (e.g., OFDM symbols) . In some implementations, the number (e.g., quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols. For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing) , a slot may include 12 symbols. The relationship between the number of symbols per slot, the number of slots per subframe, and the number of slots per frame for a normal cyclic prefix and an extended cyclic prefix may depend on a numerology. It should be understood that reference to a first numerology (e.g., μ=0) associated with a first subcarrier spacing (e.g., 15 kHz) may be used interchangeably between subframes and slots.

In the wireless communications system 100, an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc. By way of example, the wireless communications system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz –7.125 GHz) , FR2 (24.25 GHz –52.6 GHz) , FR3 (7.125 GHz –24.25 GHz) , FR4 (52.6 GHz –114.25 GHz) , FR4a or FR4-1 (52.6 GHz –71 GHz) , and FR5 (114.25 GHz –300 GHz) . In some implementations, the NEs 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands. In some implementations, FR1 may be used by the NEs 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g., control information, data) . In some implementations, FR2 may be used by the NEs 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.

FR1 may be associated with one or multiple numerologies (e.g., at least three numerologies) . For example, FR1 may be associated with a first numerology (e.g., μ=0) , which includes 15 kHz subcarrier spacing; a second numerology (e.g., μ=1) , which includes 30 kHz subcarrier spacing; and a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing. FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies) . For example, FR2 may be associated with a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing; and a fourth numerology (e.g., μ=3) , which includes 120 kHz subcarrier spacing.

In accordance with aspects of the present disclosure, in some asymmetric DL sTRP/UL mTRP deployment scenarios or the like (scenarios 1) , there is one TRP that can perform both DL transmissions and UL receptions (hereinafter, DL/UL TRP) and one or more TRPs that can only perform UL reception (hereafter, UL only TRP) . That is, the multiple UL TRPs include one DL/UL TRP and one or more UL only TRPs in scenarios 1. In some other asymmetric DL sTRP/UL mTRP deployment scenarios or the like (scenarios 2) , there is one TRP that can only perform DL transmissions (hereinafter, DL only TRP) and multiple, e.g., two TRPs that can only perform UL receptions. That is, the multiple UL TRPs all are UL only TRPs in scenarios 2. Herein, a DL TRP or a DL/UL TRP is the first type TRP at least associated with the indicated TCI state (indicated DL or joint TCI state) for DL receptions, and is also be referred to as a macro TRP (or a macro gNB or the like) , which will perform DL transmissions and may also receive UL transmissions; while a UL only TRP is the second type TRP associated with one indicated TCI state (indicated UL or joint TCI state) for UL transmissions, and is also referred to as a micro TRP (or a micro node or the like) , which will only receive UL transmissions.

For example, in asymmetric TRP deployment scenarios, the macro TRP and micro TRPs differ in power rating. UE may receive DL transmissions from the macro TRP, but perform UL transmissions to either the macro TRP or micro TRP (s) which is non-co-located with the macro TRP in order to maximize UL throughputs. To further reduce energy consumption, in some cases, the micro TRP (s) may, for instance, reduce or even turn off DL transmissions. To support this deployment scenario, enhancements at least on UL power control (PC) are needed. For example, when pathloss RS is transmitted from the macro TRP and the UE performs UL transmissions to the micro TRPs, the pathloss measured from the pathloss RS from the macro TRP is not accurate. Therefore, it is necessary to configure the UE with pathloss offsets to facilitate accurate calculation of the pathloss associated with the micro TRPs. For another example, an additional SRS closed-loop PC adjustment state for DL CSI acquisition to the macro TRP (or for DL transmissions in the network side) , which is separate from that for the SRS to the micro nodes (or for UL mTRP receptions in the network side) may be introduced. It needs to support two or more closed-loop PC adjustment states for SRSs, which are all separate from PUSCHs.

It can be seen that UL transmissions may be associated with (e.g., towards) the macro TRP (e.g., DL/UL TRP or DL only TRP) or the micro TRPs (e.g., UL only TRPs) . In accordance with aspects of the present disclosure, there are various manners to determine whether a UL transmission is associated with a macro TRP or a micro TRP.

For example, in some implementations of the present disclosure, in the case that a PL offset associated with a TCI state (e.g., a UL or joint TCI state) of a UL transmission is configured as 0 dB or no PL offset is associated with the TCI state of the UL transmission, the UL transmission is associated with a macro TRP. Otherwise, the UL transmission is associated with a micro TRP.

In some other implementations of the present disclosure, a RRC parameter will be configured in each configured TCI state (e.g., UL or joint TCI state) associated with UL transmissions to indicate the TCI state is associated with a macro TRP or a micro TRP. UE will determine whether a UL transmission is associated with a macro TRP or a micro TRP based on the RRC parameter configured in a TCI state of the UL transmission.

In some yet other implementations of the present disclosure, it may be preconfigured or predefined that the first indicated TCI state (e.g., indicated UL or joint TCI state) for UL transmissions is associated with a macro TRP and the second indicated TCI state for UL transmissions is associated with a micro TRP. Since the beam (s) of a PUCCH, a PUSCH or an aperiodic SRS resource which is configured to follow an indicated UL or joint TCI state, is at least one of multiple indicated UL or joint TCI states for UL transmissions, UE will determine whether a PUCCH, a PUSCH or an aperiodic SRS resource which is configured to follow an indicated UL or joint TCI state is associated with a macro TRP or a micro TRP based on the associated indicated TCI state. That is, UE will determine whether a UL transmission is associated with the macro TRP or the micro TRP respectively based on an indicated TCI state of the UL transmission in the case the UL transmission is a PUCCH, a PUSCH or an aperiodic SRS resource which is configured to follow one of the multiple indicated TCI states for UL transmissions. While for a SRS resource which is not configured to follow any indicated UL or joint TCI state, a RRC parameter will be configured for the SRS resource or a SRS resource set including the SRS resource to indicate that the SRS resource is associated with a macro TRP or a micro TRP. That is, UE will determine whether a UL transmission is associated with the macro TRP or the micro TRP based on a RRC parameter configured for a SRS resource or a SRS resource set including the SRS resource in the case that the UL transmission is a SRS resource which is not configured to follow any one of the multiple indicated TCI states for UL transmissions. An exemplary SRS resource which is not configured to follow any indicated UL or joint TCI state may be a persistent SRS, a periodic SRS resource, or an aperiodic SRS resource which is not configured to follow any indicated UL or joint TCI state.

When a UL transmission towards the macro TRP and a UL transmission towards the micro TRP are overlapped, which one should be transmitted and which one should be dropped will be considered. In addition, considering that the UL transmission towards the macro TRP such as SRS for antenna switching which is used for DL channel sate information (CSI) acquisition is important, the power reduction priority of UL transmission towards the macro TRP and micro TRP should also be considered. Although a scheme identical or similar to the legacy scheme can be applied to solve the aforementioned issues, it cannot take advantage of asymmetric DL sTRP/UL mTRP deployments in some cases.

Thus, to maximize UL throughputs and further reduce energy consumption in asymmetric DL sTRP/UL mTRP deployment scenarios, aspects of the present disclosure provide several novel schemes for UL transmission prioritizations and power allocation prioritizations.

First regarding UL transmission prioritizations, in accordance with aspects of the present disclosure, generally, a UL transmission associated with a macro TRP has a transmission priority higher than that of a UL transmission associated with a micro TRP. However, for SRS (or SRS resource) and PUCCH (or PUCCH resource) , special schemes are also considered.

According to legacy specification, when SRS resource and PUCCH resource are overlapped, e.g., in at least one orthogonal frequency division multiplexing (OFDM) symbol, the following priority rules are specified to determine which one is transmitted and which one is dropped.

For PUCCH and SRS on the same carrier, a UE shall not transmit SRS when semi-persistent or periodic SRS is configured in the same symbol (s) with PUCCH carrying only CSI report (s) , or only L1-RSRP report (s) , or only L1-SINR report (s) . A UE shall not transmit SRS when semi-persistent or periodic SRS is configured or aperiodic SRS is triggered to be transmitted in the same symbol (s) with PUCCH carrying HARQ-ACK, link recovery request (as defined in clause 9.2.4 of [6, 38.213] ) and/or SR. In the case that SRS is not transmitted due to overlap with PUCCH, only the SRS symbol (s) that overlap with PUCCH symbol (s) are dropped. PUCCH shall not be transmitted when aperiodic SRS is triggered to be transmitted to overlap in the same symbol with PUCCH carrying semi-persistent/periodic CSI report (s) or semi-persistent/periodic L1-RSRP report (s) only, or only L1-SINR report (s) .

In accordance with aspects of the present disclosure, if both of a PUCCH resource and a SRS resource, which are overlapped in at least one OFDM symbol, are associated with the same type TRP, e.g., both towards a macro TRP or both towards micro TRP (s) , UE will determine which one to be transmitted and which one to be dropped in accordance with the aforementioned priority rules. However, persons skilled in the art should well know that the priority determination rule specified in TS38.213 may enhance along the 3GPP evolution, and thus the determination rule regardless of TRP type should not be unduly limit to the aforementioned as specified in TS38.213.

In the case that a PUCCH resource associated with a macro TRP and an SRS resource associated with a micro TRP are overlapped, e.g., in at least one OFDM symbols, the priority of the PUCCH resource is always higher than the priority of the SRS resource. It means that UE will determine to transmit the PUCCH resource and the overlapped symbols of the SRS resource will be dropped.

In the case that a PUCCH resource associated with a micro TRP and an SRS resource associated with a macro TRP are overlapped, e.g., in at least one OFDM symbols, aspects of the present disclosure provide two schemes to determine the transmission priority.

In some implementations of the present disclosure, the transmission priority of the SRS resource associated with the macro TRP is higher than the transmission priority of the PUCCH resource associated with the micro TRP. It means that UE will determine to transmit the SRS resource and drop the overlapped PUCCH resource.

In some other implementations of the present disclosure, if the PUCCH resource carrying at least one of HARQ-ACK, LRR or SR (e.g., carrying HARQ-ACK, LRR or SR or a combination thereof) , then the transmission priority of the PUCCH resource is higher than the SRS resource. It means that UE will determine to transmit the PUCCH resource carrying at least one of HARQ-ACK, LRR or SR and drop the overlapped symbols of the SRS resource. Otherwise, the transmission priority of the SRS resource is higher than that of the PUCCH resource carrying none of HARQ-ACK, LRR or SR. It means that UE will determine to transmit the SRS resource and drop the overlapped PUCCH resource carrying none of HARQ-ACK, LRR or SR.

Regarding the prioritizations for transmission power reductions, aspects of the present disclosure define that the priority of power allocation of a UL transmission associated with a macro TRP is higher than the priority of power allocation of a UL transmission associated with a micro TRP. However, in some scenarios, there may be multiple UL transmissions associated with the same type TRP (s) , e.g., all towards the macro TRP or all towards the micro TRP.

In some implementations of the present disclosure, UE will first determine that the priority of power allocation of UL transmission (s) towards a macro TRP is higher than the priority of power allocation of UL transmission (s) towards a micro TRP. If there are two or more UL transmissions towards the macro TRP or towards the micro TRP (s) , then UE will determine the priority of power allocation of the two or more UL transmissions towards the same type TRP, e.g., towards the macro TRP or towards the micro TRP based on a priority determination scheme regardless of (without considering) the TRP type, e.g., the priority determination in TS38.213 shown below.

For single cell operation with two uplink carriers or for operation with carrier aggregation, if a total UE transmit power for PUSCH or PUCCH or PRACH or SRS transmissions on serving cells in a frequency range in a respective transmission occasion i would exceedwhereis the linear value of P_CMAX (i) in transmission occasion i as defined in [8-1, TS 38.101-1] for FR1 and [8-2, TS 38.101-2] for FR2, the UE allocates power to PUSCH/PUCCH/PRACH/SRS transmissions according to the following priority order (in descending order) so that the total UE transmit power for transmissions on serving cells in the frequency range is smaller than or equal tofor that frequency range in every symbol of transmission occasion i. For the purpose of power allocation in this clause, if a UE is provided uci-MuxWithDiffPrio and the UE multiplexes HARQ-ACK information in a PUSCH, a priority index of the PUSCH is the larger of (a) the priority index of the PUSCH according to clause 9 and (b) the larger priority index of the HARQ-ACK information. When determining a total transmit power for serving cells in a frequency range in a symbol of transmission occasion i, the UE does not include power for transmissions starting after the symbol of transmission occasion i. The total UE transmit power in a symbol of a slot is defined as the sum of the linear values of UE transmit powers for PUSCH, PUCCH, PRACH, and SRS in the symbol of the slot.

- PRACH transmission on the PCell

- PUCCH or PUSCH transmissions with larger priority index

- For PUCCH or PUSCH transmissions with same priority index

- PUCCH transmission with HARQ-ACK information, and/or SR, and/or LRR, or PUSCH transmission with HARQ-ACK information of the priority index

- PUCCH transmission with CSI or PUSCH transmission with CSI

- PUSCH transmission without HARQ-ACK information of the priority index or CSI and, for Type-2 random access procedure, PUSCH transmission on the PCell

- SRS transmission, with aperiodic SRS having higher priority than semi-persistent and/or periodic SRS, or PRACH transmission on a serving cell other than the PCell

In case of same priority order and for operation with carrier aggregation, the UE prioritizes power allocation for transmissions on the primary cell of the MCG or the SCG over transmissions on a secondary cell. In case of same priority order and for operation with two UL carriers, the UE prioritizes power allocation for transmissions on the carrier where the UE is configured to transmit PUCCH. If PUCCH is not configured for any of the two UL carriers, the UE prioritizes power allocation for transmissions on the non-supplementary UL carrier.

Similarly, persons skilled in the art should well know that the aforementioned priority determination rule specified in TS38.213 may enhance along the 3GPP evolution, and thus the determination rule regardless of TRP type should not be unduly limit to the aforementioned as specified in TS38.213.

For example, a first UL transmission, e.g., UL transmission 1 is a SRS resource towards a macro TRP, while a second UL transmission, e.g., UL transmission 2 is a PUSCH associated with a micro TRP. It is assumed that the two UL transmissions are overlapped in at least one symbol, and a total UE transmission power for the two UL transmissions exceeds the maximal UE transmission power. Although the priority of power allocation of the PUSCH (UL transmission 2) is higher than the priority of power allocation of the SRS resource (UL transmission 1) according to legacy specification, UE will determine the priority of power allocation of the SRS resource (UL transmission 1) is higher than the priority of power allocation of the PUSCH (UL transmission 2) .

In some other implementations of the present disclosure, UE will first determine the power allocation priority of UL transmissions, e.g., based on a predefined rule regardless of TRP type as illustrated above, and then determine the power allocation priority of UL transmissions associated different type TRPs based on a rule associated with TRP type if they have a same priority according to the predefined rule regardless of TRP type where the priority of power allocation of a UL transmission associated with the macro TRP is higher than that associated with the micro TRP.

For example, UL transmission 1 is a first periodic SRS which is towards a macro TRP while UL transmission 2 is a second periodic SRS resource towards a micro TRP. It is also assumed that the two UL transmissions are overlapped in at least one symbol, and a total UE transmission power for the two UL transmissions exceeds the maximal UE transmission power. Although the priority of power allocation of the first periodic SRS (UL transmission 1) is the same as the priority of power allocation of the second periodic SRS resource (UL transmission 2) according to legacy specification, UE will determine the priority of power allocation of the first periodic SRS resource (UL transmission 1) is higher than the priority of power allocation of the second periodic (UL transmission 2) .

Although the exemplary implementations of the present disclosure are mainly illustrated in the perspective view of UE side, persons skilled in the art should well understand how the technical solutions will be performed in the network side based on the consistency between the network side and UE side, and thus will not repeat for simplification.

Figure 2 illustrates an example of a UE 200 in accordance with aspects of the present disclosure. The UE 200 may include a processor 202, a memory 204, a controller 206, and a transceiver 208. The processor 202, the memory 204, the controller 206, or the transceiver 208, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. These components may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces.

The processor 202, the memory 204, the controller 206, or the transceiver 208, or various combinations or components thereof may be implemented in hardware (e.g., circuitry) . The hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , or other programmable logic device, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.

The processor 202 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof) . In some implementations, the processor 202 may be configured to operate the memory 204. In some other implementations, the memory 204 may be integrated into the processor 202. The processor 202 may be configured to execute computer-readable instructions stored in the memory 204 to cause the UE 200 to perform various functions of the present disclosure.

The memory 204 may include volatile or non-volatile memory. The memory 204 may store computer-readable, computer-executable code including instructions when executed by the processor 202 cause the UE 200 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such the memory 204 or another type of memory. Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.

In some implementations, the processor 202 and the memory 204 coupled with the processor 202 may be configured to cause the UE 200 to perform one or more of the functions described herein (e.g., executing, by the processor 202, instructions stored in the memory 204) . For example, the processor 202 may support wireless communication at the UE 200 in accordance with examples as disclosed herein. The UE 200 may be configured to support a means for receiving information indicating one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions in an activated BWP of a serving cell; and a means for determining a priority of power allocation of a first UL transmission associated with a first TRP and a priority of power allocation of a second UL transmission associated with a second TRP at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.

The controller 206 may manage input and output signals for the UE 200. The controller 206 may also manage peripherals not integrated into the UE 200. In some implementations, the controller 206 may utilize an operating system such as or other operating systems. In some implementations, the controller 206 may be implemented as part of the processor 202.

In some implementations, the UE 200 may include at least one transceiver 208. In some other implementations, the UE 200 may have more than one transceiver 208. The transceiver 208 may represent a wireless transceiver. The transceiver 208 may include one or more receiver chains 210, one or more transmitter chains 212, or a combination thereof.

A receiver chain 210 may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receiver chain 210 may include one or more antennas for receive the signal over the air or wireless medium. The receiver chain 210 may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal. The receiver chain 210 may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receiver chain 210 may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.

A transmitter chain 212 may be configured to generate and transmit signals (e.g., control information, data, packets) . The transmitter chain 212 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) . The transmitter chain 212 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmitter chain 212 may also include one or more antennas for transmitting the amplified signal into the air or wireless medium.

Figure 3 illustrates an example of a processor 300 in accordance with aspects of the present disclosure. The processor 300 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 300 may include a controller 302 configured to perform various operations in accordance with examples as described herein. The processor 300 may optionally include at least one memory 304, which may be, for example, an L1/L2/L3 cache. Additionally, or alternatively, the processor 300 may optionally include one or more arithmetic-logic units (ALUs) 306. One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .

The processor 300 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 300) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .

The controller 302 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 300 to cause the processor 300 to support various operations in accordance with examples as described herein. For example, the controller 302 may operate as a control unit of the processor 300, generating control signals that manage the operation of various components of the processor 300. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.

The controller 302 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 304 and determine subsequent instruction (s) to be executed to cause the processor 300 to support various operations in accordance with examples as described herein. The controller 302 may be configured to track memory address of instructions associated with the memory 304. The controller 302 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 302 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 300 to cause the processor 300 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 302 may be configured to manage flow of data within the processor 300. The controller 302 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 300.

The memory 304 may include one or more caches (e.g., memory local to or included in the processor 300 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementations, the memory 304 may reside within or on a processor chipset (e.g., local to the processor 300) . In some other implementations, the memory 304 may reside external to the processor chipset (e.g., remote to the processor 300) .

The memory 304 may store computer-readable, computer-executable code including instructions that, when executed by the processor 300, cause the processor 300 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. The controller 302 and/or the processor 300 may be configured to execute computer-readable instructions stored in the memory 304 to cause the processor 300 to perform various functions. For example, the processor 300 and/or the controller 302 may be coupled with or to the memory 304, the processor 300, the controller 302, and the memory 304 may be configured to perform various functions described herein. In some examples, the processor 300 may include multiple processors and the memory 304 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.

The one or more ALUs 306 may be configured to support various operations in accordance with examples as described herein. In some implementations, the one or more ALUs 306 may reside within or on a processor chipset (e.g., the processor 300) . In some other implementations, the one or more ALUs 306 may reside external to the processor chipset (e.g., the processor 300) . One or more ALUs 306 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 306 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 306 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 306 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 306 to handle conditional operations, comparisons, and bitwise operations.

The processor 300 may support wireless communication in accordance with examples as disclosed herein. The processor 300 may be configured to or operable to support a means for receiving information indicating one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions in an activated BWP of a serving cell; and a means for determining a priority of power allocation of a first UL transmission associated with a first TRP and a priority of power allocation of a second UL transmission associated with a second TRP at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.

Figure 4 illustrates an example of a NE 400 in accordance with aspects of the present disclosure. The NE 400 may include a processor 402, a memory 404, a controller 406, and a transceiver 408. The processor 402, the memory 404, the controller 406, or the transceiver 408, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. These components may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces.

The processor 402, the memory 404, the controller 406, or the transceiver 408, or various combinations or components thereof may be implemented in hardware (e.g., circuitry) . The hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , or other programmable logic device, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.

The processor 402 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof) . In some implementations, the processor 402 may be configured to operate the memory 404. In some other implementations, the memory 404 may be integrated into the processor 402. The processor 402 may be configured to execute computer-readable instructions stored in the memory 404 to cause the NE 400 to perform various functions of the present disclosure.

The memory 404 may include volatile or non-volatile memory. The memory 404 may store computer-readable, computer-executable code including instructions when executed by the processor 402 cause the NE 400 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such the memory 404 or another type of memory. Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.

In some implementations, the processor 402 and the memory 404 coupled with the processor 402 may be configured to cause the NE 400 to perform one or more of the functions described herein (e.g., executing, by the processor 402, instructions stored in the memory 404) . For example, the processor 402 may support wireless communication at the NE 400 in accordance with examples as disclosed herein. The NE 400 may be configured to support a means for transmitting information indicating one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions in an activated BWP of a serving cell; and a means for receiving a first UL transmission associated with a first TRP and a second UL transmission associated with a second TRP, wherein, a priority of power allocation of the first UL transmission and a priority of power allocation of the second UL transmission are determined at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.

The controller 406 may manage input and output signals for the NE 400. The controller 406 may also manage peripherals not integrated into the NE 400. In some implementations, the controller 406 may utilize an operating system such as or other operating systems. In some implementations, the controller 406 may be implemented as part of the processor 402.

In some implementations, the NE 400 may include at least one transceiver 408. In some other implementations, the NE 400 may have more than one transceiver 408. The transceiver 408 may represent a wireless transceiver. The transceiver 408 may include one or more receiver chains 410, one or more transmitter chains 412, or a combination thereof.

A receiver chain 410 may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receiver chain 410 may include one or more antennas for receive the signal over the air or wireless medium. The receiver chain 410 may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal. The receiver chain 410 may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receiver chain 410 may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.

A transmitter chain 412 may be configured to generate and transmit signals (e.g., control information, data, packets) . The transmitter chain 412 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) . The transmitter chain 412 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmitter chain 412 may also include one or more antennas for transmitting the amplified signal into the air or wireless medium.

Figure 5 illustrates a flowchart of a method in accordance with aspects of the present disclosure. The operations of the method may be implemented by a UE as described herein. In some implementations, the UE may execute a set of instructions to control the function elements of the UE to perform the described functions.

At step 501, the method may include receiving information indicating one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions in an activated BWP of a serving cell. The operations of step 501 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 501 may be performed by a UE as described with reference to Figure 2.

At step 503, the method may include determining a priority of power allocation of a first UL transmission associated with a first TRP and a priority of power allocation of a second UL transmission associated with a second TRP at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions. The operations of step 503 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of step 503 may be performed by a UE as described with reference to Figure 2.

It should be noted that the method described herein describes a possible implementation, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible.

Figure 6 illustrates a flowchart of a method in accordance with aspects of the present disclosure. The operations of the method may be implemented by a NE as described herein. In some implementations, the NE may execute a set of instructions to control the function elements of the NE to perform the described functions.

At step 601, the method may include transmitting information indicating one indicated TCI state for DL receptions and multiple indicated TCI states for UL transmissions in an activated BWP of a serving cell. The operations of step 601 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of step 601 may be performed by a NE as described with reference to Figure 4.

At step 603, the method may include receiving a first UL transmission associated with a first TRP and a second UL transmission associated with a second TRP, wherein, a priority of power allocation of the first UL transmission and a priority of power allocation of the second UL transmission are determined at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions. The operations of step 603 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of step 603 may be performed by a NE as described with reference to Figure 4.

The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Claims

A user equipment (UE) for wireless communication, comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the UE to:

receive information indicating one indicated transmission configuration indication (TCI) state for downlink (DL) receptions and multiple indicated TCI states for uplink (UL) transmissions in an activated bandwidth part (BWP) of a serving cell;

determine a priority of power allocation of a first UL transmission associated with a first transmission-reception point (TRP) and a priority of power allocation of a second UL transmission associated with a second TRP at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.
The UE of claim 1, wherein the first predefined rule defines that the priority of power allocation of a UL transmission associated with the first type TRP is higher than the priority of power allocation of a UL transmission associated with the second type TRP.
The UE of claim 1, wherein after determining the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission in accordance with the first predefined rule, the at least one processor is configured to cause the UE to:

determine the priority of power allocation of the first UL transmission in accordance with a second predefined rule regardless of TRP type in the case that there is a third UL transmission associated with the first TRP overlapping with the first UL transmission; or

determine the priority of power allocation of the second UL transmission in accordance with a second predefined rule regardless of TRP type in the case that there is a fourth UL transmission associated with the second TRP overlapping with the second UL transmission.
The UE of claim 1, wherein the at least one processor is configured to cause the UE to:

determine the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission in accordance with a second predefined rule regardless of TRP type; and

determine the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission in accordance with the first predefined rule in the case that the first UL transmission and the second UL transmission have a same priority of power allocation in accordance with a second predefined rule regardless of TRP type.
The UE of claim 1, wherein before determining the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission, the at least one processor is configured to cause the UE to:

determine to transmit the first UL transmission and drop overlapped symbols of a sounding reference signal (SRS) overlapping with the first UL transmission, wherein the first UL transmission is a physical uplink control channel (PUCCH) resource and SRS resource is associated with the second TRP.
The UE of claim 1, wherein before determining the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission, the at least one processor is configured to cause the UE to:

determine to transmit the first UL transmission and drop a physical uplink control channel (PUCCH) resource overlapping with the first UL transmission, wherein the first UL transmission is a sounding reference signal (SRS) resource, and the PUCCH resource is associated with the second TRP.
The UE of claim 1, wherein before determining the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission, the at least one processor is configured to cause the UE to:

determine to transmit the second UL transmission and drop overlapped symbols of a sounding reference signal (SRS) resource overlapping with the second UL transmission, wherein the second UL transmission is a physical uplink control channel (PUCCH) resource carrying one or more of hybrid automatic repeat request-acknowledge (HARQ-ACK) , link recovery request (LRR) and scheduling request (SR) , and the SRS resource is associated with the first TRP.
The UE of claim 1, wherein before determining the priority of power allocation of the first UL transmission and the priority of power allocation of the second UL transmission, the at least one processor is configured to cause the UE to:

determine to transmit the first UL transmission and drop a physical uplink control channel (PUCCH) resource carrying none of hybrid automatic repeat request-acknowledge (HARQ-ACK) , link recovery request (LRR) and scheduling request (SR) overlapping with the first UL transmission, wherein the first UL transmission is sounding reference signal (SRS) resource, and the PUCCH resource is associated with the second TRP.
The UE of claim 1, wherein the at least one processor is configured to cause the UE:

determine a UL transmission is associated with the first TRP in the case that a pathloss offset associated with a TCI state of a UL transmission is configured to be 0 dB or no pathloss offset is associated with the TCI state of the UL transmission;

otherwise, determine the UL transmission is associated with the second type TRP.
The UE of claim 1, wherein, the at least one processor is configured to cause the UE to:

determine whether a UL transmission is associated with the first TRP or the second TRP based on a radio resource control (RRC) parameter configured in a TCI state of the UL transmission.
The UE of claim 1, wherein, a first indicated TCI state of the multiple indicated TCI states for UL transmissions is associated with the first type TRP and a second indicated TCI state of the multiple indicated TCI states for UL transmissions is associated with the second type TRP, and the at least one processor is configured to cause the UE to:

determine whether a UL transmission is associated with the first TRP or the second TRP respectively based on an indicated TCI state of the UL transmission in the case the UL transmission is a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) or an aperiodic sounding reference signal (SRS) resource which is configured to follow one of the multiple indicated TCI states for UL transmissions; or

determine whether a UL transmission is associated with the first TRP or the second TRP based on a radio resource control (RRC) parameter configured for a SRS resource or a SRS resource set including the SRS resource in the case that the UL transmission is a SRS resource which is not configured to follow one of the multiple indicated TCI states for UL transmissions.
A processor for wireless communication, comprising:

at least one controller coupled with at least one memory and configured to cause the processor to:

receive information indicating one indicated transmission configuration indication (TCI) state for DL receptions and multiple indicated TCI states for UL transmissions in an activated bandwidth part (BWP) of a serving cell; and

determine a priority of power allocation of a first UL transmission associated with a first transmission-reception point (TRP) and a priority of power allocation of a second UL transmission associated with a second TRP at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.
A network equipment (NE) for wireless communication, comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the NE to:

transmit information indicating one indicated transmission configuration indication (TCI) state for DL receptions and multiple indicated TCI states for UL transmissions in an activated bandwidth part (BWP) of a serving cell; and

receive a first UL transmission associated with a first transmission-reception point (TRP) and a second UL transmission associated with a second TRP, wherein, a priority of power allocation of the first UL transmission and a priority of power allocation of the second UL transmission are determined at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.
A method performed by a user equipment (UE) , comprising:

receiving information indicating one indicated transmission configuration indication (TCI) state for DL receptions and multiple indicated TCI states for UL transmissions in an activated bandwidth part (BWP) of a serving cell; and

determining a priority of power allocation of a first UL transmission associated with a first transmission-reception point (TRP) and a priority of power allocation of a second UL transmission associated with a second TRP at least in accordance with a first predefined rule associated with TRP type, wherein the first UL transmission and the second UL transmission are overlapped, the first TRP is a first type TRP at least associated with the one indicated TCI state for DL receptions, and the second TRP is a second type TRP associated with one of the multiple indicated TCI states for UL transmissions.