WO2025097272A1

WO2025097272A1 - User-equipment-initiated beam switching with low latency

Info

Publication number: WO2025097272A1
Application number: PCT/CN2023/129881
Authority: WO
Inventors: Wenfeng Liu; Bo Gao; Zhaohua Lu; Ke YAO
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2023-11-06
Filing date: 2023-11-06
Publication date: 2025-05-15
Anticipated expiration: 2026-05-06

Abstract

Systems, methods, and apparatus for wireless communication are described. A wireless communication method includes transmitting, by a wireless device, a beam state. The method further includes performing, by the wireless device and based on the beam state, a transmission or a reception of a data burst without a beam activation or a beam indication from a network node. In some embodiments, the transmission or the reception of the data burst is on a beam state selected from a number of beam states in a latest measurement result report or a number of beam states activated by media access control (MAC) control elements (CEs).

Description

USER-EQUIPMENT-INITIATED BEAM SWITCHING WITH LOW LATENCY

TECHNICAL FIELD

This patent document is directed generally to wireless communications.

BACKGROUND

Mobile telecommunication technologies are moving the world toward an increasingly connected and networked society. In comparison with the existing wireless networks, next-generation systems and wireless communication techniques will need to support a much wider range of use-case characteristics and provide a more complex and sophisticated range of access requirements and flexibilities.

Long-Term Evolution (LTE) is a standard for wireless communication for mobile devices and data terminals developed by 3rd Generation Partnership Project (3GPP) . LTE Advanced (LTE-A) is a wireless communication standard that enhances the LTE standard. The 5th generation of wireless system, known as 5G, advances the LTE and LTE-Awireless standards and is committed to supporting higher data rates, large number of connections, ultra-low latency, high reliability, and other emerging business needs.

SUMMARY

Techniques are disclosed for user equipment (UE) to perform a transmission or a reception of a data burst without a beam activation or a beam indication from a network node. In some embodiments, the UE selects a beam state or a beam state group from a number of beam states or beam state groups in a latest measurement result report or a number of beam states or beam state groups activated by media access control (MAC) control elements (CEs) .

A first example wireless communication method includes transmitting, by a wireless device, a beam state. The method further includes performing, by the wireless device and based on the beam state, a transmission or a reception of a data burst without a beam activation or a beam indication from a network node.

A second example wireless communication method includes transmitting, by a wireless device, a number of beam states in a latest measurement result report. The method further includes performing, by the wireless device and based on the number of beam states in the latest measurement result report, a transmission or a reception of a data burst on a beam state selected from the number of beam states in the latest measurement result report or a number of beam states activated by media access control (MAC) control elements (CEs) .

A third example wireless communication method includes transmitting, by a wireless device, a number of beam states, where the number of beam states belong to a number of beam state groups in a latest measurement result report. The method further includes performing, by the wireless device and based on the number of beam state groups in the latest measurement result report, a transmission or a reception of a data burst on a beam state group selected from the number of beam state groups in the latest measurement result report or a number of beam state groups activated by media access control (MAC) control elements (CEs) .

A fourth example wireless communication method includes determining, by a wireless device and based on a beam state in a latest measurement result report, a number of beam states. The method further includes transmitting, by the wireless device, the number of beam states, where the number of beam states are used for a number of transmission or reception instances.

A fifth example wireless communication method includes receiving, by a network node, a beam state. The method further includes transmitting, by the network node, a network response associated with the beam state. The method further includes performing, by the network node and based on the network response, a transmission or a reception of a data burst without transmitting a beam activation or a beam indication to a wireless device.

A sixth example wireless communication method includes receiving, by a network node, a number of beam states in a latest measurement result report. The method further includes performing, by the network node and based on the number of beam states in the latest measurement result report, a transmission or a reception of a data burst on a beam state selected from the number of beam states in the latest measurement result report or a number of beam states activated by media access control (MAC) control elements (CEs) .

A seventh example wireless communication method includes receiving, by a network node, a number of beam states, where the number of beam states belong to a number of beam state groups in a latest measurement result report. The method further includes performing, by the network node and based on the number of beam state groups in the latest measurement result report, a transmission or a reception of a data burst on a beam state group selected from the number of beam state groups in the latest measurement result report or a number of beam state groups activated by media access control (MAC) control elements (CEs) .

In yet another exemplary embodiment, a device that is configured or operable to perform the above-described methods is disclosed. The device may include a processor configured to implement the above-described methods.

In yet another exemplary embodiment, the above-described methods are embodied in the form of processor-executable code and stored in a non-transitory computer-readable storage medium. The code included in the computer readable storage medium when executed by a processor, causes the processor to implement the methods described in this patent document.

The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates beams selected from a latest measurement result report.

FIG. 2 illustrates beams activated by media access control (MAC) control elements (CEs) and selected from a latest measurement result report.

FIG. 3 illustrates beam groups selected from a latest measurement result report.

FIG. 4 is an exemplary flowchart for performing a transmission or a reception by a wireless device.

FIG. 5 is an exemplary flowchart for selecting a beam state.

FIG. 6 is an exemplary flowchart for selecting a beam state group.

FIG. 7 is an exemplary flowchart for determining beam states based on a latest measurement result report.

FIG. 8 is an exemplary flowchart for transmitting a network response.

FIG. 9 is an exemplary flowchart for performing a transmission or a reception by a network node based on a selected beam state.

FIG. 10 is an exemplary flowchart for performing a transmission or a reception by a network node based on a selected beam state group.

FIG. 11 illustrates an exemplary block diagram of a hardware platform that may be a part of a network node or a wireless device.

FIG. 12 illustrates exemplary wireless communication including a Base Station (BS) and User Equipment (UE) based on some implementations of the disclosed technology.

DETAILED DESCRIPTION

The example headings for the various sections below are used to facilitate the understanding of the disclosed subject matter and do not limit the scope of the claimed subject matter in any way. Accordingly, one or more features of one example section can be combined with one or more features of another example section. Furthermore, 5G terminology is used for the sake of clarity of explanation, but the techniques disclosed in the present document are not limited to 5G technology only and may be used in wireless systems that implemented other protocols.

I. Introduction

The present patent document describes how a wireless device transmits and receives data on a beam state without a network activation or indication.

Transmission Configuration Indication (TCI) is a signaling mechanism used in new radio (NR) to facilitate beam indication and inform user equipment (UE) about the transmission parameters of target channels/reference signals (RSs) . However, the conventional radio resource control (RRC) /media access control (MAC) control element (CE) /downlink control information (DCI) based hierarchical TCI indication framework leads to unnecessary latency and signaling overhead for beam switching. To address this issue, we propose a new UE-initiated beam indication method in this patent document to achieve fast beam switching. Specifically, the beam or beam group associated with the latest report is directly applied without additional beam activation/indication from the network (NW) , for providing a reference signal for the quasi co-location for physical downlink shared channel (PDSCH) /physical downlink control channel (PDCCH) /channel state information reference signal (CSI-RS) , and to provide a reference, if applicable, for determining uplink (UL) transmit (TX) spatial filter for physical uplink shared channel (PUSCH) /physical uplink control channel (PUCCH) /sounding reference signal (SRS) . If multiple candidate beams or beam groups are reported, a default rule is provided for the determination of beam switching, or an additional beam selection field is introduced in the DCI signaling to indicate one beam from the beam pool originated from the reported candidate beams. Enhancements to UE-initiated beam switching for multiple transmission and reception point (MTRP) scenarios and multiple future time instances are also considered to further reduce the signaling overhead for beam indication.

New Radio (NR) is a new radio access technology developed by 3rd Generation Partnership Project (3GPP) as a standard for air interfaces in radio networks. One of the key features of NR is the support of high frequency bands. High frequency bands have abundant frequency-domain resources, but wireless signals in high frequency bands decay quickly, which significantly limits the coverage of the wireless signals operating in those bands. To mitigate these adverse effects, transmitting signals in a beam mode that is able to concentrate energy in a relatively small spatial range is implemented, which improves the coverage in the high frequency bands.

Both users and base stations need to adjust their beams and achieve precise alignment during initial access and data transmission to ensure maximum gain. 3GPP has developed a set of beam management procedures for adjusting the beam direction in the high frequency band and maintaining a suitable transmitting and receiving beam pair, including beam sweeping, beam measurement, beam reporting, and beam indication. Additionally, in the current specification, the UE is configured with at least one resource setting for channel measurement and at least one reporting setting for CSI report. Each reporting setting contains the parameters for one CSI reporting band and the CSI related quantities to be reported by the UE. For beam management, the CSI related quantities to be reported by the UE mainly include CSI-RS resource indicator (CRI) , synchronization signal (SS) /physical broadcast channel (PBCH) Block resource indicator (SSBRI) , L1-reference signal received power (RSRP) or L1-signal interference + noise ratio (SINR) .

Transmission Configuration Indication (TCI) is a signaling mechanism used in NR to facilitate beam indication and inform UE about the transmission parameters of target channels/RS. Specifically, the UE can be configured with a list of up to 128 TCI states, for providing a reference signal (i.e., QCL source) for the quasi co-location for demodulation reference signal (DM-RS) of PDSCH and DM-RS of PDCCH in a component carrier (CC) , for CSI-RS, and to provide a reference, if applicable, for determining UL TX spatial filter for dynamic-grant and configured-grant based PUSCH and PUCCH resource in a CC, and SRS. Accordingly, the UE can use the similarities like delay spread, Doppler spread, Doppler shift, and average delay when forming the corresponding channel estimations.

The TCI state can be pointed to the UE with RRC configuration, MAC CE activation or DCI or a combination thereof, where the signaling mechanism maybe different depending on the target channels/RS. Besides, to keep the DCI size as small as possible, the UE-specific MAC CE can be used to down-select from up to 128 TCI states to up to 8 TCI states and/or pairs of TCI states, which can subsequently be selected directly by a DCI to indicate the UE with the exact TCI state assumption valid for a given channel/RS at a given time. For example, the TCI state is provided via RRC for periodic CSI-RS, via MAC CE for semi-persistent CSI-RS, and via a combination of RRC, MAC CE, and DCI for aperiodic CSI-RS. Apparently, there would always be a latency and signaling overhead for beam indication/switching caused by the RRC/MAC CE/DCI based hierarchical TCI indication framework.

Note that, in this patent document, the definition of “beam” is equivalent to quasi-co-location (QCL) state, transmission configuration indicator (TCI) state, spatial relation (also called as spatial relation information) , reference signal (RS) , spatial filter or pre-coding. Furthermore, in this patent document, “beam state” is also called “beam. ” Specifically:

The definition of “Tx beam” is equivalent to QCL state, TCI state, spatial relation state, DL/UL reference signal (such as channel state information reference signal (CSI-RS) , synchronization signal block (SSB) (which is also called as SS/PBCH) , demodulation reference signal (DM-RS) , sounding reference signal (SRS) , and physical random access channel (PRACH) ) , Tx spatial filter or Tx precoding;

The definition of “Rx beam” is equivalent to QCL state, TCI state, spatial relation state, spatial filter, receiver (Rx) spatial filter or Rx precoding;

The definition of “beam identifier (ID) ” is equivalent to QCL state index, TCI state index, spatial relation state index, reference signal index, spatial filter index or precoding index.

Specifically, the spatial filter can be either UE-side or gNodeB (gNB) -side one, and the spatial filter is also called spatial-domain filter.

Note that, in this patent document, “spatial relation information” includes one or more reference RSs, which is used to represent the same or quasi-co “spatial relation” between targeted “RS or channel” and the one or more reference RSs.

Note that, in this patent document, “beam state” is associated with or includes, one or more reference RSs and/or their corresponding QCL type parameters, where QCL type parameters include at least one of the following aspects or combinations: [1] Doppler spread, [2] Doppler shift, [3] delay spread, [4] average delay, [5] average gain, and [6] Spatial parameter. In this patent document, “TCI state” is equivalent to “beam state” . In this patent document, ‘spatial parameter’ is equivalent to spatial parameter, spatial Rx parameter or spatial filter. In this patent document, the following are the definitions for ‘QCL-TypeA’ , ‘QCL-TypeB’ , ‘QCL-TypeC’ , and ‘QCL-TypeD’ .

'QCL-TypeA' : {Doppler shift, Doppler spread, average delay, delay spread}

'QCL-TypeB' : {Doppler shift, Doppler spread}

'QCL-TypeC' : {Doppler shift, average delay}

'QCL-TypeD' : {Spatial Rx parameter}

Note that, in this patent document, “UL channel” can be PUCCH or PUSCH.

Note that, in this patent document, “DL channel” can be PDCCH, or PDSCH.

Note that, in this patent document, “UL RS” can be SRS, PRACH, DM-RS (e.g., DM-RS for PUSCH or PUCCH) .

Note that, in this patent document, “DL RS” can be SSB, CSI-RS, DM-RS (e.g., DM-RS for PDSCH, or PDCCH) .

Note that, in this patent document, “UL signal” can be UL channel or UL RS (e.g., SRS, PRACH, DM-RS, PUSCH or PUCCH) .

Note that, in this patent document, “DL signal” can be DL channel or DL RS (SSB, CSI-RS, DM-RS, PDSCH, or PDCCH) .

Note that, in this patent document, “time unit” can be sub-symbol, symbol, slot, sub-frame, frame, or transmission occasion.

Note that, in this patent document, the power control parameter includes target power (also called as P0) , path loss RS, scaling factor for path loss (also called alpha) , or closed loop process. Note that, in this patent document, the path-loss can be couple loss.

Note that, in this patent document, “DCI” is equivalent to “PDCCH. ”

Note that, in this patent document, ‘precoding information’ is equivalent to a pre-coding matrix indicator (PMI) , transmission PMI (TPMI) , precoding or beam.

Note that, in this patent document, ‘TRP’ is equivalent to a RS port, a RS port group, RS resource, or a RS resource set.

Note that, in this patent document, ‘port group’ is equivalent to antenna group, or UE port group.

Note that, related issues in this patent document will also affect future mobile communication systems (such as 6G mobile communication networks) and need to be solved urgently.

II. Embodiment 1

UE-initiated beam switching.

In a typical beam management process, the UE measures the reference signal resources carried on different transmit beams and reports the measurement results (i.e., beam quality) to the base station, and then the base station determines the optimal beam and perform beam switching based on the RRC/MAC CE/DCI based hierarchical TCI indication framework. As a result, the latency and signaling overhead for beam switching may be non-negligible, resulting from the transmission of MAC CE command for TCI states activation and/or DCI signaling for TCI state indication. To address this issue and reduce the latency of beam indication as much as possible, we propose a UE-initiated beam switching method in this embodiment, where the beam associated with the latest report is directly applied without additional beam activation/indication from the NW.

One of the beam ID (or RS resource ID or TCI state ID) selected from a configured RS resource set for channel measurement or from a configured TCI state pool is reported to the NW. Alternatively, one of the beam ID (or RS resource ID or TCI state ID) associated with the largest measured beam quality (e.g., RSRP, SINR) is reported from the UE to the NW. The measured beam quality associated with the beam ID (or RS resource ID or TCI state ID) may also be reported to the NW.

The UE may need to monitor NW response for UE-initiated beam switching and determining whether the reported beam ID (or RS resource ID or TCI state ID) is applicable or not. For example, the UE can be provided with a dedicated control resource set (CORESET) and search space for monitoring a dedicated PDCCH/DCI.

If the NW response or the dedicated PDCCH/DCI is detected within a pre-configured monitoring window, the UE will autonomously perform beam switching and apply the reported beam (or RS resource or TCI state) for target channels/RS after a certain time. Alternatively, the UE may autonomously perform beam switching after a certain time without monitoring any NW response. Specifically, for UE-initiated beam switching, the UE will directly apply the beam (or RS resource or TCI state) associated with the latest reporting instance after a certain time.

If one beam ID (or RS resource ID) is reported in the latest reporting instance, the UE will assume that the DM-RS ports of PDSCH, and/or the DM-RS port of PDCCH, and/or the CSI-RS port (s) of a CSI-RS resource of a serving cell are quasi co-located with the beam (or RS resource) with respect to qcl-Type set to 'typeD' , and when applicable, also with respect to qcl-Type set to 'typeA' , 'typeB' , or 'typeC' .

Alternatively, if one TCI state ID is reported in the latest reporting instance, the UE will monitor PDCCH, and/or receives PDSCH, and/or receives CSI-RS resource in a CSI-RS resource set applying the reported TCI state.

Besides, the beam (or RS resource or TCI state) reported in the latest reporting instance can also be used for determining UL TX spatial filter for dynamic-grant and/or configured-grant based PUSCH and/or PUCCH resource in a CC, and/or SRS.

Any combination of the above three methods.

With the above method, no additional MAC CE command or DCI signaling for TCI state indication is needed, and thus the latency and signaling overhead can be greatly reduced.

III. Embodiment 2

Extension to multi-beam report.

In embodiment 1, only one beam (represented by a beam ID or a RS resource ID or a TCI state ID) is reported by the UE and then applied for the reception of target channels/RS directly. In this embodiment, we further consider how to perform UE-initiated beam switching if multiple candidate beams are reported in the latest CSI reporting instance.

Similar to embodiment 1, the UE may need to monitor NW response after reporting multiple candidate beams. If a positive NW response is detected, it is considered that the UE-initiated beam switching has been granted by the NW. Additionally, since multiple candidate beams are reported, it should be further determined which beam is applied for the reception of target channels/RS. The following methods can be considered.

By default, within the reported candidate beams, the first beam ID (or RS resource ID or TCI state ID) is directly applied after a certain time.

By default, within the reported candidate beams, the last beam ID (or RS resource ID or TCI state ID) is directly applied after a certain time.

By default, within the reported candidate beams, the beam ID (or RS resource ID or TCI state ID) associated with the largest measured beam quality (e.g., RSRP, SINR) is directly applied after a certain time.

By default, within the reported candidate beams, the beam ID (or RS resource ID or TCI state ID) associated with the lowest ID is directly applied after a certain time.

By default, within the reported candidate beams, the beam ID (or RS resource ID or TCI state ID) associated with the highest ID is directly applied after a certain time.

NW will indicate one beam ID (or RS resource ID or TCI state ID) by DCI signaling from a beam pool. The beam pool is composed of all (or part of) reported candidate beams in the latest reporting instance. For example, an additional beam selection field is introduced in the DCI signaling to indicate one of the reported candidate beams in the latest reporting instance for the reception of target channels/RS. The bit width for the new DCI field iswhereis the ceiling function, and N is the number of candidate beams reported in the latest reporting instance (i.e., the number of beams or RS resources or TCI states to be reported per report setting) . The codepoints in the DCI field point into a beam (or RS resource or TCI state) list reported by the UE in the latest reporting instance. When the UE is scheduled, the DCI selects one of the reported beams to be assumed for the reception of target channels/RS. Taking N=4 as an example, the DCI codepoint '00' , '01' , '10' , '11' indicates the first, second, third, and fourth beam reported in the latest reporting instance, respectively, as shown in FIG. 1.

NW will indicate one beam ID (or RS resource ID or TCI state ID) by DCI signaling from a beam pool. The beam pool is a combination of MAC CE activated beams (or part of or none of MAC CE activated beams) and all reported candidate beams (or part of or none of reported candidate beams) in the latest reporting instance. For example, an additional beam selection field is introduced in the DCI signaling to indicate one beam from the beam pool. The bit width for the new DCI field iswhereis the ceiling function, M is the number of MAC CE activated beams in the beam pool, and N is the number of candidate beams in the beam pool reported in the latest reporting instance. The codepoints in the DCI field point into a beam (or RS resource or TCI state) list in the beam pool. When the UE is scheduled, the DCI selects one beam to be assumed for the reception of target channels/RS. Taking M=2, N=2 as an example, the DCI codepoint maps to different beams as illustrated in FIG. 2, where the first M beams represent MAC CE activated beams and the last N beams represents reported candidate beams in the latest reporting instance. Note that, other mapping relation between the DCI codepoint and the beams in the beam pool can be possible and is not precluded.

Any combination of the above methods.

Thus, one beam (or RS resource or TCI state) is indicated by default or by the new DCI field for providing a reference signal (i.e., QCL source) for the quasi co-location for DM-RS of PDSCH and DM-RS of PDCCH in a CC, for CSI-RS, and to provide a reference signal, if applicable, for determining UL TX spatial filter for dynamic-grant and configured-grant based PUSCH and PUCCH resource in a CC, and SRS.

IV. Embodiment 3

Extension to MTRP scenario.

In some scenarios such as MTRP-based transmission schemes, the group-based beam reporting can be configured, which implies that different beams reported in the same group can be received simultaneously at the UE, or different beams reported for different groups can be received simultaneously at the UE. In this embodiment, we consider the extension to MTRP scenario for UE-initiated beam switching.

Similar to embodiment 1, if one beam (or RS resource or TCI state) group is reported, the UE will directly apply the beam group for the reception of target channels/RS after a certain time.

For the selected one beam group, the NW can further indicate which beam within the beam group is applicable for the reception of corresponding target channels/RS after a certain time, while others are not.

Similar to embodiment 2, if multiple beam (or RS resource or TCI state) groups are reported in the latest reporting instance, the UE will apply the first/last beam group, or the beam group associated with the largest measured beam quality (or with the lowest/highest ID) by default. Alternatively, an additional beam selection field can be introduced in the DCI signaling to indicate one of the beam group within the beam pool for the reception of target channels/RS, as shown in FIG. 3.

V. Embodiment 4

Extension to beam switching for multiple future time instances.

With the boost of UE capability, the UE can not only perform measurement report based on the configured RS resource set, but also predict the beam quality of future time instances based on its perception of the environment and utilization of advanced signal processing algorithm such as artificial intelligence and machine learning. That is, the beam (represented by a beam ID or RS resource ID or TCI state ID) and/or associated beam quality of multiple time instances can be reported in one reporting instance from UE to NW. To simplify the description, we denote the number of future time instances to be reported/predicted as T, the number of reported beam (or beam group) at each future time instance as K. Thus, the number of reported beams (or beam groups) in one reporting instance is N=T*K. The case of beam group is similar with that of beam and thus is omitted in the following.

For each future time instance, one beam is reported, i.e., K=1. Similar to embodiment 1, the UE will apply the beam for the reception of target channels/RS after a certain time. Different beams are applicable and used at different future time instances based on the UE reporting at the latest reporting instance.

For each future time instance, one beam is reported, i.e., K=1. Besides, an additional beam selection field can be introduced in the DCI signaling to indicate one beam within a beam pool for the reception of target channels/RS at each future time instance. The beam pool is a combination of MAC CE activated beams (or part of or none of MAC CE activated beams) and all reported candidate beams (or part of or none of reported candidate beams) in the latest reporting instance. The bit width for the new DCI field maybei.e.,

For each future time instance, more than one beam is reported, i.e., K＞1. Besides, an additional beam selection field can be introduced in the DCI signaling to indicate one beam within a beam pool for the reception of target channels/RS at each future time instance. The beam pool is a combination of MAC CE activated beams (or part of or none of MAC CE activated beams) and reported candidate beams (or part of or none of reported candidate beams) corresponding to each time instance in the latest reporting instance. The bit width for the new DCI field maybe

For each future time instance, more than one beam is reported, i.e., K＞1. Besides, an additional beam selection field can be introduced in the DCI signaling to indicate one beam within a beam pool for the reception of target channels/RS at each future time instance. The beam pool is a combination of MAC CE activated beams (or part of or none of MAC CE activated beams) and all reported candidate beams (or part of or none of reported candidate beams) . The bit width for the new DCI field maybe

In this patent document, we propose a new UE-initiated beam indication method to achieve fast beam switching. Specifically, the beam or beam group associated with the latest report is directly applied without additional beam activation/indication from the NW, for providing a reference signal for the quasi co-location for DM-RS of PDSCH and DM-RS of PDCCH in a CC, for CSI-RS, and to provide a reference, if applicable, for determining a UL TX spatial filter for dynamic-grant and configured-grant based PUSCH and PUCCH resource in a CC, and SRS. If multiple candidate beams or beam groups are reported, a default rule is provided for the determination of beam switching or an additional beam selection field is introduced in the DCI signaling to indicate one beam from the beam pool. Enhancements to UE-initiated beam switching for MTRP scenarios and multiple future time instances are also considered to further reduce the signaling overhead for beam indication.

FIG. 4 is an exemplary flowchart for performing a transmission or a reception by a wireless device. Operation 402 includes transmitting, by a wireless device, a beam state. Operation 404 includes performing, by the wireless device and based on the beam state, a transmission or a reception of a data burst without a beam activation or a beam indication from a network node. In some embodiments, the method can be implemented according to Embodiment 1. In some embodiments, performing further steps of the method can be based on a better system performance than a legacy protocol.

In some embodiments, the beam state includes a transmission configuration indication (TCI) state identifier (ID) , where the TCI state ID is used to receive a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) , or a channel state information reference signal (CSI-RS) , or determine a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .

In some embodiments, the beam state includes a reference signal (RS) resource identifier (ID) , where the RS resource ID provides a reference for a quasi co-location (QCL) for a demodulation RS (DM-RS) port of a physical downlink control channel (PDCCH) , a DM-RS port of a physical downlink shared channel (PDSCH) , or a channel state information RS (CSI- RS) port of a CSI-RS resource of a serving cell with respect to a QCL-type set to “type A, ” “type B, ” “type C, ” or “type D, ” or provides a reference for determining a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .

In some embodiments, transmitting the beam state includes transmitting a latest measurement result report associated with the beam state. In some embodiments, transmitting the beam state includes determining, by the wireless device, a reference signal (RS) resource identifier (ID) or a transmission configuration indication (TCI) state ID from a configured RS resource set for channel measurement or a configured TCI state pool. Transmitting the beam state further includes transmitting, by the wireless device, a report of the RS resource ID or the TCI state ID and a measured channel quality associated with the RS resource ID or the TCI state ID to the network node.

In some embodiments, the method further includes receiving, by the wireless device, a network response within a pre-configured monitoring window on a dedicated physical downlink control channel (PDCCH) or dedicated downlink control information (DCI) . The method further includes determining, by the wireless device and based on the network response, that a beam associated with the beam state is applicable for a transmission or a reception of a data burst.

FIG. 5 is an exemplary flowchart for selecting a beam state. Operation 502 includes transmitting, by a wireless device, a number of beam states in a latest measurement result report. Operation 504 includes performing, by the wireless device and based on the number of beam states in the latest measurement result report, a transmission or a reception of a data burst on a beam state selected from the number of beam states in the latest measurement result report or a number of beam states activated by media access control (MAC) control elements (CEs) . In some embodiments, the method can be implemented according to Embodiment 2. In some embodiments, performing further steps of the method can be based on a better system performance than a legacy protocol.

FIG. 6 is an exemplary flowchart for selecting a beam state group. Operation 602 includes transmitting, by a wireless device, a number of beam states, where the number of beam states belong to a number of beam state groups in a latest measurement result report. Operation 604 includes performing, by the wireless device and based on the number of beam state groups in the latest measurement result report, a transmission or a reception of a data burst on a beam state group selected from the number of beam state groups in the latest measurement result report or a number of beam state groups activated by media access control (MAC) control elements (CEs) . In some embodiments, the method can be implemented according to Embodiment 3. In some embodiments, performing further steps of the method can be based on a better system performance than a legacy protocol.

In some embodiments, a beam state or a beam state group of the number of beam states or beam state groups in the latest measurement result report includes a transmission configuration indication (TCI) state identifier (ID) , where the TCI state ID is used to receive a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) , or a channel state information reference signal (CSI-RS) , or determine a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .

In some embodiments, a beam state or a beam state group of the number of beam states or beam state groups in the latest measurement result report includes a reference signal (RS) resource identifier (ID) , where the RS resource ID provides a reference for a quasi co-location (QCL) for a demodulation RS (DM-RS) port of a physical downlink control channel (PDCCH) , a DM-RS port of a physical downlink shared channel (PDSCH) , or a channel state information RS (CSI-RS) port of a CSI-RS resource of a serving cell with respect to a QCL-type set to “type A, ” “type B, ” “type C, ” or “type D, ” or provides a reference for determining a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .

In some embodiments, the beam state or the beam state group selected is associated with at least one of the following parameters associated with the latest measurement result report: a first reference signal (RS) resource identifier (ID) or a first RS resource group ID; a first transmission configuration indication (TCI) state ID or a first TCI state group ID; a last RS resource ID or a last RS resource group ID; a last TCI state ID or a last TCI state group ID; a RS resource ID, a RS resource group ID, a TCI state ID, or a TCI state group ID associated with a highest measured channel quality; a lowest RS resource ID or a lowest RS resource group ID; a lowest TCI state ID or a lowest TCI state group ID; a highest RS resource ID or a highest RS resource group ID; or a highest TCI state ID or a highest TCI state group ID.

In some embodiments, the beam state or the beam state group selected is associated with downlink control information (DCI) indicating a beam state identifier (ID) or a beam state group ID from a beam state pool or a beam state group pool. In some embodiments, the beam state pool or the beam state group pool includes all or a portion of the number of beam states or beam state groups in the latest measurement result report. In some embodiments, the DCI includes a beam state or a beam state group selection field with a bit width ofwhereis the ceiling function, and where N is the total number of the number of beam states or beam state groups in the latest measurement result report. In some embodiments, a codepoint in the beam state or the beam state group selection field points to a beam state or a beam state group of the number of beam states or beam state groups in the latest measurement result report.

In some embodiments, the beam state pool or the beam state group pool includes all or a portion of the number of beam states or beam state groups activated by MAC CEs and all or a portion of the number of beam states or beam state groups in the latest measurement result report. In some embodiments, the DCI includes a beam state or a beam state group selection field with a bit width ofwhereis the ceiling function, where M is the total number of the number of beam states or beam state groups activated by MAC CEs, and where N is the total number of the number of beam states or beam state groups in the latest measurement result report. In some embodiments, a codepoint in the beam state or the beam state group selection field points to a beam state or a beam state group of the number of beam states or beam state groups activated by MAC CEs or a beam state or a beam state group of the number of beam states or beam state groups in the latest measurement result report.

FIG. 7 is an exemplary flowchart for determining beam states based on a latest measurement result report. Operation 702 includes determining, by a wireless device and based on a beam state in a latest measurement result report, a number of beam states. Operation 704 includes transmitting, by the wireless device, the number of beam states, where the number of beam states are used for a number of transmission or reception instances. In some embodiments, the method can be implemented according to Embodiment 4. In some embodiments, performing further steps of the method can be based on a better system performance than a legacy protocol.

In some embodiments, each beam state of the number of beam states is used for one transmission or reception instance, or more than one beam state of the number of beam states is used for each transmission or reception instance.

In some embodiments, the method further includes receiving, by the wireless device, downlink control information (DCI) including a beam state selection field, where the beam state selection field indicates a beam state of the number of beam states determined by the wireless device for each transmission or reception instance, or where the beam state selection field indicates a beam state of the number of beam states determined by the wireless device in each measurement result report.

FIG. 8 is an exemplary flowchart for transmitting a network response. Operation 802 includes receiving, by a network node, a beam state. Operation 804 includes transmitting, by the network node, a network response associated with the beam state. Operation 806 includes performing, by the network node and based on the network response, a transmission or a reception of a data burst without transmitting a beam activation or a beam indication to a wireless device. In some embodiments, the method can be implemented according to Embodiment 1. In some embodiments, performing further steps of the method can be based on a better system performance than a legacy protocol.

In some embodiments, the beam state includes a transmission configuration indication (TCI) state identifier (ID) , where the TCI state ID is used for the wireless device to receive a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) , or a channel state information RS (CSI-RS) , or for the wireless device to determine a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .

In some embodiments, the beam state includes a reference signal (RS) resource identifier (ID) , where the RS resource ID provides a reference for a quasi co-location (QCL) for a demodulation RS (DM-RS) port of a physical downlink control channel (PDCCH) , a DM-RS port of a physical downlink shared channel (PDSCH) , or a channel state information RS (CSI-RS) port of a CSI-RS resource of a serving cell with respect to a QCL-type set to “type A, ” “type B, ” “type C, ” or “type D, ” or provides a reference for determining a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .

In some embodiments, receiving the beam state includes receiving a latest measurement result report associated with the beam state. In some embodiments, receiving the beam state includes transmitting, by the network node, a reference signal (RS) resource identifier (ID) or a transmission configuration indication (TCI) state ID in a configured RS resource set for channel measurement or a configured TCI state pool. Receiving the beam state further includes receiving, by the network node, a report of the RS resource ID or the TCI state ID and a measured channel quality associated with the RS resource ID or the TCI state ID from the wireless device.

In some embodiments, transmitting the network response includes transmitting, by the network node, the network response within a pre-configured monitoring window on a dedicated physical downlink control channel (PDCCH) or dedicated downlink control information (DCI) , where the wireless device determines, based on the network response, that a beam associated with the beam state is applicable for a transmission or a reception of a data burst.

FIG. 9 is an exemplary flowchart for performing a transmission or a reception by a network node based on a selected beam state. Operation 902 includes receiving, by a network node, a number of beam states in a latest measurement result report. Operation 904 includes performing, by the network node and based on the number of beam states in the latest measurement result report, a transmission or a reception of a data burst on a beam state selected from the number of beam states in the latest measurement result report or a number of beam states activated by media access control (MAC) control elements (CEs) . In some embodiments, the method can be implemented according to Embodiment 2. In some embodiments, performing further steps of the method can be based on a better system performance than a legacy protocol.

FIG. 10 is an exemplary flowchart for performing a transmission or a reception by a network node based on a selected beam state group. Operation 1002 includes receiving, by a network node, a number of beam states, where the number of beam states belong to a number of beam state groups in a latest measurement result report. Operation 1004 includes performing, by the network node and based on the number of beam state groups in the latest measurement result report, a transmission or a reception of a data burst on a beam state group selected from the number of beam state groups in the latest measurement result report or a number of beam state groups activated by media access control (MAC) control elements (CEs) . In some embodiments, the method can be implemented according to Embodiment 3. In some embodiments, performing further steps of the method can be based on a better system performance than a legacy protocol.

In some embodiments, a beam state or a beam state group of the number of beam states or beam state groups in the latest measurement result report includes a transmission configuration indication (TCI) state identifier (ID) , where the TCI state ID is used for a wireless device to receive a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) , or a channel state information reference signal (CSI-RS) , or for the wireless device to determine a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .

In some embodiments, the beam state or the beam state group selected is associated with downlink control information (DCI) indicating a beam state identifier (ID) or a beam state group ID from a beam state pool or a beam state group pool. In some embodiments, the beam state pool or the beam state group pool includes all or a portion of the number of beam states or beam state groups in the latest measurement result report. In some embodiments, the beam state pool or the beam state group pool includes all or a portion of the number of beam states or beam state groups activated by MAC CEs and all or a portion of the number of beam states or beam state groups in the latest measurement result report.

FIG. 11 shows an exemplary block diagram of a hardware platform 1100 that may be a part of a network node (e.g., base station, transmission parameter, or TRP) or a wireless device (e.g., a user equipment (UE) ) . The hardware platform 1100 includes at least one processor 1110 and a memory 1105 having instructions stored thereupon. The instructions upon execution by the processor 1110 configure the hardware platform 1100 to perform the operations described in FIGS. 1 to 10 and in the various embodiments described in this patent document. The transmitter 1115 transmits or sends information or data to another device. For example, a network node transmitter can send a message to a user equipment. The receiver 1120 receives information or data transmitted or sent by another device. For example, a user equipment can receive a message from a network note. For example, a UE, a wireless device, or a network node, as described in the present document, may be implemented using the hardware platform 1100.

The implementations as discussed above will apply to a wireless communication. FIG. 12 shows an example of a wireless communication system (e.g., a 5G or NR cellular network) that includes a base station 1220 and one or more user equipment (UE) 1211, 1212, and 1213. In some embodiments, the UEs access the BS (e.g., the network, the TRP) using a communication link to the network (sometimes called uplink direction, as depicted by dashed arrows 1231, 1232, 1233) , which then enables subsequent communication (e.g., shown in the direction from the network to the UEs, sometimes called downlink direction, shown by arrows 1241, 1242, 1243) from the BS to the UEs. In some embodiments, the BS send information to the UEs (sometimes called downlink direction, as depicted by arrows 1241, 1242, 1243) , which then enables subsequent communication (e.g., shown in the direction from the UEs to the BS, sometimes called uplink direction, shown by dashed arrows 1231, 1232, 1233) from the UEs to the BS. The UE may be, for example, a smartphone, a tablet, a mobile computer, a machine to machine (M2M) device, an Internet of Things (IoT) device, and so on. The UEs described in the present document may be communicatively coupled to the base station 1220 depicted in FIG. 12.

It will be appreciated by one of skill in the art that the present patent document discloses methods of performing a transmission or a reception of a data burst without a beam activation or a beam indication from a network node. More specifically, the transmission or the reception of the data burst can be performed on a beam state selected from a number of beam states in a latest measurement result report or a number of beam states activated by media access control (MAC) control elements (CEs) . The disclosed methods can reduce latency because the methods reduce delay from the network activation or indication.

Some of the embodiments described herein are described in the general context of methods or processes, which may be implemented in one embodiment by a computer program product, embodied in a computer-readable medium, including computer-executable instructions, such as program code, executed by computers in networked environments. A computer-readable medium may include removable and non-removable storage devices including, but not limited to, Read Only Memory (ROM) , Random Access Memory (RAM) , compact discs (CDs) , digital versatile discs (DVD) , etc. Therefore, the computer-readable media can include a non-transitory storage media. Generally, program modules may include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. Computer-or processor-executable instructions, associated data structures, and program modules represent examples of program code for executing steps of the methods disclosed herein. The particular sequence of such executable instructions or associated data structures represents examples of corresponding acts for implementing the functions described in such steps or processes.

Some of the disclosed embodiments can be implemented as devices or modules using hardware circuits, software, or combinations thereof. For example, a hardware circuit implementation can include discrete analog and/or digital components that are, for example, integrated as part of a printed circuit board. Alternatively, or additionally, the disclosed components or modules can be implemented as an Application Specific Integrated Circuit (ASIC) and/or as a Field Programmable Gate Array (FPGA) device. Some implementations may additionally or alternatively include a digital signal processor (DSP) that is a specialized microprocessor with an architecture optimized for the operational needs of digital signal processing associated with the disclosed functionalities of this application. Similarly, the various components or sub-components within each module may be implemented in software, hardware, or firmware. The connectivity between the modules and/or components within the modules may be provided using any one of the connectivity methods and media that is known in the art, including, but not limited to, communications over the Internet, wired, or wireless networks using the appropriate protocols.

While this document contains many specifics, these should not be construed as limitations on the scope of an invention that is claimed or of what may be claimed, but rather as descriptions of features specific to particular embodiments. Certain features that are described in this document in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable sub-combination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a sub-combination or a variation of a sub-combination. Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results.

Only a few implementations and examples are described, and other implementations, enhancements and variations can be made based on what is described and illustrated in this patent document.

Claims

A method of wireless communication, comprising:

transmitting, by a wireless device, a beam state; and

performing, by the wireless device and based on the beam state, a transmission or a reception of a data burst without a beam activation or a beam indication from a network node.
The method of claim 1, wherein the beam state comprises a transmission configuration indication (TCI) state identifier (ID) , and wherein the TCI state ID is used to receive a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) , or a channel state information reference signal (CSI-RS) , or determine a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .
The method of claim 1, wherein the beam state comprises a reference signal (RS) resource identifier (ID) , and wherein the RS resource ID provides a reference for a quasi co-location (QCL) for a demodulation RS (DM-RS) port of a physical downlink control channel (PDCCH) , a DM-RS port of a physical downlink shared channel (PDSCH) , or a channel state information RS (CSI-RS) port of a CSI-RS resource of a serving cell with respect to a QCL-type set to “type A, ” “type B, ” “type C, ” or “type D, ” or provides a reference for determining a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .
The method of any of claims 1-3, wherein transmitting the beam state comprises transmitting a latest measurement result report associated with the beam state.
The method of any of claims 1-4, wherein transmitting the beam state comprises:

determining, by the wireless device, a reference signal (RS) resource identifier (ID) or a transmission configuration indication (TCI) state ID from a configured RS resource set for channel measurement or a configured TCI state pool; and

transmitting, by the wireless device, a report of the RS resource ID or the TCI state ID and a measured channel quality associated with the RS resource ID or the TCI state ID to the network node.
The method of any of claims 1-5, further comprising:

receiving, by the wireless device, a network response within a pre-configured monitoring window on a dedicated physical downlink control channel (PDCCH) or dedicated downlink control information (DCI) ; and

determining, by the wireless device and based on the network response, that a beam associated with the beam state is applicable for a transmission or a reception of a data burst.
A method of wireless communication, comprising:

transmitting, by a wireless device, a plurality of beam states in a latest measurement result report; and

performing, by the wireless device and based on the plurality of beam states in the latest measurement result report, a transmission or a reception of a data burst on a beam state selected from the plurality of beam states in the latest measurement result report or a plurality of beam states activated by media access control (MAC) control elements (CEs) .
A method of wireless communication, comprising:

transmitting, by a wireless device, a plurality of beam states, wherein the plurality of beam states belong to a plurality of beam state groups in a latest measurement result report; and

performing, by the wireless device and based on the plurality of beam state groups in the latest measurement result report, a transmission or a reception of a data burst on a beam state group selected from the plurality of beam state groups in the latest measurement result report or a plurality of beam state groups activated by media access control (MAC) control elements (CEs) .
The method of claim 7 or 8, wherein a beam state or a beam state group of the plurality of beam states or beam state groups in the latest measurement result report comprises a transmission configuration indication (TCI) state identifier (ID) , and wherein the TCI state ID is used to receive a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) , or a channel state information reference signal (CSI-RS) , or determine a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .
The method of claim 7 or 8, wherein a beam state or a beam state group of the plurality of beam states or beam state groups in the latest measurement result report comprises a reference signal (RS) resource identifier (ID) , and wherein the RS resource ID provides a reference for a quasi co-location (QCL) for a demodulation RS (DM-RS) port of a physical downlink control channel (PDCCH) , a DM-RS port of a physical downlink shared channel (PDSCH) , or a channel state information RS (CSI-RS) port of a CSI-RS resource of a serving cell with respect to a QCL-type set to “type A, ” “type B, ” “type C, ” or “type D, ” or provides a reference for determining a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .
The method of any of claims 7-10, wherein the beam state or the beam state group selected is associated with at least one of the following parameters associated with the latest measurement result report:

a first reference signal (RS) resource identifier (ID) or a first RS resource group ID;

a first transmission configuration indication (TCI) state ID or a first TCI state group ID;

a last RS resource ID or a last RS resource group ID;

a last TCI state ID or a last TCI state group ID;

a RS resource ID, a RS resource group ID, a TCI state ID, or a TCI state group ID associated with a highest measured channel quality;

a lowest RS resource ID or a lowest RS resource group ID;

a lowest TCI state ID or a lowest TCI state group ID;

a highest RS resource ID or a highest RS resource group ID; or

a highest TCI state ID or a highest TCI state group ID.
The method of any of claims 7-10, wherein the beam state or the beam state group selected is associated with downlink control information (DCI) indicating a beam state identifier (ID) or a beam state group ID from a beam state pool or a beam state group pool.
The method of claim 12, wherein the beam state pool or the beam state group pool comprises all or a portion of the plurality of beam states or beam state groups in the latest measurement result report.
The method of claim 13, wherein the DCI comprises a beam state or a beam state group selection field with a bit width ofwhereinis the ceiling function, and wherein N is the total number of the plurality of beam states or beam state groups in the latest measurement result report.
The method of claim 14, wherein a codepoint in the beam state or the beam state group selection field points to a beam state or a beam state group of the plurality of beam states or beam state groups in the latest measurement result report.
The method of claim 12, wherein the beam state pool or the beam state group pool comprises all or a portion of the plurality of beam states or beam state groups activated by MAC CEs and all or a portion of the plurality of beam states or beam state groups in the latest measurement result report.
The method of claim 16, wherein the DCI comprises a beam state or a beam state group selection field with a bit width ofwhereinis the ceiling function, wherein M is the total number of the plurality of beam states or beam state groups activated by MAC CEs, and wherein N is the total number of the plurality of beam states or beam state groups in the latest measurement result report.
The method of claim 17, wherein a codepoint in the beam state or the beam state group selection field points to a beam state or a beam state group of the plurality of beam states or beam state groups activated by MAC CEs or a beam state or a beam state group of the plurality of beam states or beam state groups in the latest measurement result report.
A method of wireless communication, comprising:

determining, by a wireless device and based on a beam state in a latest measurement result report, a plurality of beam states; and

transmitting, by the wireless device, the plurality of beam states, wherein the plurality of beam states are used for a plurality of transmission or reception instances.
The method of claim 19, wherein each beam state of the plurality of beam states is used for one transmission or reception instance, or more than one beam state of the plurality of beam states is used for each transmission or reception instance.
The method of claim 19 or 20, further comprising receiving, by the wireless device, downlink control information (DCI) comprising a beam state selection field, wherein the beam state selection field indicates a beam state of the plurality of beam states determined by the wireless device for each transmission or reception instance, or wherein the beam state selection field indicates a beam state of the plurality of beam states determined by the wireless device in each measurement result report.
A method of wireless communication, comprising:

receiving, by a network node, a beam state;

transmitting, by the network node, a network response associated with the beam state; and

performing, by the network node and based on the network response, a transmission or a reception of a data burst without transmitting a beam activation or a beam indication to a wireless device.
The method of claim 22, wherein the beam state comprises a transmission configuration indication (TCI) state identifier (ID) , and wherein the TCI state ID is used for the wireless device to receive a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) , or a channel state information RS (CSI-RS) , or for the wireless device to determine a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .
The method of claim 22, wherein the beam state comprises a reference signal (RS) resource identifier (ID) , and wherein the RS resource ID provides a reference for a quasi co-location (QCL) for a demodulation RS (DM-RS) port of a physical downlink control channel (PDCCH) , a DM-RS port of a physical downlink shared channel (PDSCH) , or a channel state information RS (CSI-RS) port of a CSI-RS resource of a serving cell with respect to a QCL-type set to “type A, ” “type B, ” “type C, ” or “type D, ” or provides a reference for determining a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .
The method of any of claims 22-24, wherein receiving the beam state comprises receiving a latest measurement result report associated with the beam state.
The method of any of claims 22-25, wherein receiving the beam state comprises:

transmitting, by the network node, a reference signal (RS) resource identifier (ID) or a transmission configuration indication (TCI) state ID in a configured RS resource set for channel measurement or a configured TCI state pool; and

receiving, by the network node, a report of the RS resource ID or the TCI state ID and a measured channel quality associated with the RS resource ID or the TCI state ID from the wireless device.
The method of any of claims 22-26, wherein transmitting the network response comprises transmitting, by the network node, the network response within a pre-configured monitoring window on a dedicated physical downlink control channel (PDCCH) or dedicated downlink control information (DCI) , and wherein the wireless device determines, based on the network response, that a beam associated with the beam state is applicable for a transmission or a reception of a data burst.
A method of wireless communication, comprising:

receiving, by a network node, a plurality of beam states in a latest measurement result report; and

performing, by the network node and based on the plurality of beam states in the latest measurement result report, a transmission or a reception of a data burst on a beam state selected from the plurality of beam states in the latest measurement result report or a plurality of beam states activated by media access control (MAC) control elements (CEs) .
A method of wireless communication, comprising:

receiving, by a network node, a plurality of beam states, wherein the plurality of beam states belong to a plurality of beam state groups in a latest measurement result report; and

performing, by the network node and based on the plurality of beam state groups in the latest measurement result report, a transmission or a reception of a data burst on a beam state group selected from the plurality of beam state groups in the latest measurement result report or a plurality of beam state groups activated by media access control (MAC) control elements (CEs) .
The method of claim 28 or 29, wherein a beam state or a beam state group of the plurality of beam states or beam state groups in the latest measurement result report comprises a transmission configuration indication (TCI) state identifier (ID) , and wherein the TCI state ID is used for a wireless device to receive a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) , or a channel state information reference signal (CSI-RS) , or for the wireless device to determine a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .
The method of claim 28 or 29, wherein a beam state or a beam state group of the plurality of beam states or beam state groups in the latest measurement result report comprises a reference signal (RS) resource identifier (ID) , and wherein the RS resource ID provides a reference for a quasi co-location (QCL) for a demodulation RS (DM-RS) port of a physical downlink control channel (PDCCH) , a DM-RS port of a physical downlink shared channel (PDSCH) , or a channel state information RS (CSI-RS) port of a CSI-RS resource of a serving cell with respect to a QCL-type set to “type A, ” “type B, ” “type C, ” or “type D, ” or provides a reference for determining a transmit (TX) spatial filter for a dynamic grant or a configured grant based on a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , or a sounding reference signal (SRS) .
The method of any of claims 28-31, wherein the beam state or the beam state group selected is associated with at least one of the following parameters associated with the latest measurement result report:

a first reference signal (RS) resource identifier (ID) or a first RS resource group ID;

a first transmission configuration indication (TCI) state ID or a first TCI state group ID;

a last RS resource ID or a last RS resource group ID;

a last TCI state ID or a last TCI state group ID;

a RS resource ID, a RS resource group ID, a TCI state ID, or a TCI state group ID associated with a highest measured channel quality;

a lowest RS resource ID or a lowest RS resource group ID;

a lowest TCI state ID or a lowest TCI state group ID;

a highest RS resource ID or a highest RS resource group ID; or

a highest TCI state ID or a highest TCI state group ID.
The method of any of claims 28-31, wherein the beam state or the beam state group selected is associated with downlink control information (DCI) indicating a beam state identifier (ID) or a beam state group ID from a beam state pool or a beam state group pool.
The method of claim 33, wherein the beam state pool or the beam state group pool comprises all or a portion of the plurality of beam states or beam state groups in the latest measurement result report.
The method of claim 33, wherein the beam state pool or the beam state group pool comprises all or a portion of the plurality of beam states or beam state groups activated by MAC CEs and all or a portion of the plurality of beam states or beam state groups in the latest measurement result report.
An apparatus for wireless communication, comprising a processor, wherein the processor is configured to implement a method recited in any one or more of claims 1 to 35.
A computer readable program storage medium having code stored thereon, the code, when executed by a processor, causing the processor to implement a method recited in any one or more of claims 1 to 35.