Simultaneous downlink transmission and uplink panel switching

Abstract

In one aspect, a method of wireless communication is disclosed. The method includes receiving, by a wireless device, one or more reference signals from a network device. The method also includes transmitting, by the wireless device, a report, wherein the report includes at least one of a first reference signal, a channel quality, an uplink transmission parameter, a first set of information, a carrier component, or a control resource set pool.

Description

Technical Field

[0001] This patent document generally relates to wireless communications. Background Art

[0002] Mobile communication technology is pushing the world towards an increasingly connected and networked society. The rapid development of mobile communications and technological advances have led to greater demand for capacity and connectivity. Other aspects such as energy consumption, equipment cost, spectrum efficiency and latency are also important to meet the needs of various communication scenarios. Various technologies are being discussed, including new ways to provide higher quality of service, longer battery life and improved performance. Summary of the invention

[0003] Among other things, this patent document describes techniques and apparatus related to improving the efficiency of wireless communications.

[0004] In one aspect, a method of wireless communication is disclosed. The method includes receiving, by a wireless device, one or more reference signals from a network device. The method also includes transmitting, by the wireless device, a report, wherein the report includes at least one of a first reference signal, a channel quality, an uplink transmission parameter, a first set of information, a carrier component, or a control resource set pool.

[0005] In another aspect, another method of wireless communication is disclosed. The method includes detecting, by a wireless device, a trigger event that limits the transmit power of a first beam of the wireless device, wherein the first beam has a maximum power reduction greater than or equal to a first threshold, or an uplink duty cycle greater than or equal to a second threshold. The method also includes identifying, by the wireless device, a new beam, wherein the new beam has a value greater than or equal to a third threshold after subtracting a second maximum power reduction from a reference signal received power. The method also includes reporting, by the wireless device, at least one parameter of the new beam to a network device in a report, wherein the report is transmitted via a MAC-CE maximum power reduction procedure or a power headroom reporting procedure.

[0006] In another aspect, another method of wireless communication is disclosed. The method includes transmitting, by a network device, one or more reference signals to a wireless device. The method also includes receiving, by the network device, a report, wherein the report includes at least one of a first reference signal, a channel quality, an uplink transmission parameter, a first set of information, a carrier component, or a control resource set pool.

[0007] These and other aspects are described in this patent document. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 An example of a link recovery procedure is shown.

[0009] Figure 2AAn example of beam measurement and reporting is shown with four panels on the UE side.

[0010] Figure 2B An example of wireless device initiated reporting with UE rotation is shown.

[0011] Figure 3 An example of wireless device initiated reporting for downlink simultaneous transmissions is shown.

[0012] Figure 4 An example of a process that takes into account the effect of beam-specific maximum power exposure (MPE) is shown.

[0013] Figure 5 An example of a method performed at a wireless device is shown.

[0014] Figure 6 An example of a method performed at a network device is shown.

[0015] Figure 7 A wireless communication system based on some example embodiments of the disclosed technology is shown.

[0016] Figure 8 A block diagram of a portion of a wireless system based on some example embodiments of the disclosed technology is shown. DETAILED DESCRIPTION

[0017] Certain features are described using the example of the fifth generation (5G) wireless protocol. However, the applicability of the disclosed technology is not limited to 5G wireless systems. The headings used in the following description are only to aid understanding and are not intended to limit the features described.

[0018] In 5G New Radio (NR), in addition to digital beamforming, analog beamforming is introduced into mobile networks to provide robustness of communications at high frequencies above 6 GHz. However, directional radio frequency (RF) transmission using analog beamforming technology has limited multipath diversity, which makes communications above 6 GHz susceptible to channel fluctuations, such as blockage by people or vehicles. The link recovery process (also referred to as the beam recovery process) enables a wireless device (also referred to as the UE in this article) to initialize an event-driven report of a beam failure event and identify a new beam for subsequent data transmission. Link recovery may include the following steps: a) beam failure detection, b) new candidate beam identification, c) beam failure recovery request (Beam Failure Recovery Request, BFR) (also referred to as link failure recovery request) from the UE to the next generation node B (gNB), and d) gNB response to the recovery. This process can be configured for a primary cell (PCell) or a primary second cell (PSCell), both of which are configured with an uplink (UL) channel (i.e., a physical random-access channel (PRACH)) for carrying the link recovery request in step c. In this document, if there is no special description, "PCell" is equivalent to a primary cell, or a primary cell in its corresponding cell group, such as a PSCell.

[0019] For the second cell (SCell), a MAC-CE+PUCCH-BFR procedure is also introduced for this situation. Compared with PCell, the link recovery procedure also includes the following four steps: a) beam failure detection, b) new candidate beam identification, c) beam failure recovery request (BFR) from UE to gNB, and d) gNB response to recovery. However, the BFR procedure is further divided into two sub-steps: requesting uplink shared channel (UL-SCH) resources through PUCCH-BFR signaling; and reporting the faulty CC index (corresponding to the faulty SCell) and the associated new candidate beam index.

[0020] The current 5G NR solution is based on the scenario of only a single panel on the UE side, which means that at a given moment, only one DL TX beam can be received or only one UL TX beam can be transmitted. In other words, if the UE has multiple panels, the activation or deactivation of the panel depends entirely on the UE implementation. However, when the UE actually has multiple panels, the architecture of beam management has severe limitations on transmission performance and UE-side power saving.

[0021] For transmission performance (whether DL transmission or UL transmission), simultaneous multi-beam transmission using multiple panels can support higher rank (RANK) transmission and obtain more spatial diversity gain, which means that the channel capacity can be significantly improved.

[0022] For UE-side power saving or maximum power exposure (MPE), due to the lack of UE-side preference about panel status (such as idle or active) and measurement results for each panel, some low-performance panels may always be active if the UL beam of the panel is configured for dynamic indication by the gNB.

[0023] Conventional link recovery procedures are not suitable for such multi-panel operation scenarios (eg, only some panels experience beam failure). The disclosed techniques, including UE-initiated DL simultaneous transmission mode and UL panel switching procedures, address this problem.

[0024] The triggering event, format of UE report, signaling of gNB response and default UE behavior after gNB response should be fully considered. As a UE initialized process, UL resources have to be reserved for this and the corresponding UE behavior during this process should be clearly specified.

[0025] Considering the cases of CC groups and multiple TRPs, once the process is successfully completed, the scope or conditions for the UE initialization process, such as triggering events or updating the default beam and UL transmission resources, should be fully studied for a single TRP that is part of a CC group or multiple TRPs.

[0026] To support backward and forward compatibility, consideration should be given to UE capabilities to support the procedure and enable signaling from the gNB. Additionally, the timeline for applying the newly identified beams or panels should be fully considered.

[0027] As a price for wide and ultra-wide spectrum resources, the considerable propagation losses caused by extremely high frequencies become a significant challenge. To address this issue, antenna arrays using massive MIMO (e.g., up to 1024 antenna elements for one node) and beamforming training techniques have been adopted to achieve beam alignment and obtain sufficiently high antenna gain. In order to keep the implementation cost low while still benefiting from antenna arrays, analog phase shifters have become very attractive for implementing millimeter wave (mmWave) beamforming, which means that the number of controllable phases is limited and a constant modulus constraint is placed on these antenna elements. Given a pre-specified beam pattern, the variable phase shift-based BF training goal is to identify the best pattern for subsequent data transmission, typically in the case of one TRP and one panel.

[0028] To ensure robustness, the UE may initiate a link recovery process in the PCell, such as Figure 1 As shown in FIG. 1 , the link recovery request transmission is based on PRACH. In PCell, the detailed process of contention-free link recovery is summarized as follows:

[0029] Beam failure detection: One or more DL RSs are configured or implicitly derived for beam failure detection, and the corresponding BLER result (as a metric for beam failure detection) is determined by measuring one or more DL RSs. When the BLER of all or part of the DL RSs is not worse than a predetermined threshold within a configured window, an indication of a link failure is notified to the MAC-CE layer. In the MAC-CE layer, if an indication of a link failure is received from the PHY layer, the UE increments the counter for beam failure indication (i.e., BFI_COUNTER) by 1, and when the BFI_COUNTER is not less than a pre-configured threshold, a beam failure event is declared.

[0030] New candidate beam identification: One or more DL RSs are configured as candidate RSs for new candidate beam identification. If the L1-RSRP result associated with a DL RS (as a metric for new beam identification) is not worse than a predetermined threshold, then a single DL RS can be assumed to be a new candidate beam (i.e., q_new).

[0031] Beam Failure Recovery Request (BFR): When a beam failure event is declared and / or at least one new candidate beam is found, the UE shall initialize a PRACH transmission associated with the RS q_new selected from step b (when the channel quality of any DL RS as a candidate beam for recovery is all worse than the threshold, any one of the DL RSs can be randomly selected), where each DL RS used for new beam identification is associated with one or more PRACH opportunities.

[0032] gNB response for recovery: After transmitting the PRACH transmission for link recovery request, the UE shall monitor the PDCCH for link recovery in one dedicated CORESET or dedicated search space according to the quasi co-location parameters associated with DL RS q_new. Upon detecting the gNB response, the UE shall assume that the gNB response for recovery was successfully received and perform corresponding UE behavior, such as updating the QCL assumptions for one or more CORESETs and spatial filtering on PUCCH resources.

[0033] Then, for the second cell (SCell), the MAC-CE+PUCCH-BFR process is also introduced as a link recovery request to replace the PRACH-based process. Compared with the PCell, the link recovery process also includes the above four steps. However, the BFR process (i.e., link recovery request) is further divided into two sub-steps: requesting uplink shared channel (UL-SCH) resources through PUCCH-BFR signaling; and reporting the faulty CC index (corresponding to the faulty SCell) and the associated new candidate beam index.

[0034] In general, for communications other than 5G gNB (base station) and the next generation, the case of multiple TRPs and multiple panels should be considered, and there are multiple panels for the UE at the same time so as to cover the entire space for enhanced coverage. Figure 2A An example of beam measurement and reporting is shown, where the UE side has four panels. As a typical case, the panel for the TRP and UE side has two TXRUs, which are correspondingly associated with cross polarization. Therefore, in order to achieve high rank or multi-layer transmission, the TRP and UE should try to use different beams generated from different panels, which is also called simultaneous transmission across multiple panels (STxMP), in order to fully utilize the capabilities of each panel (such as its associated TXRU).

[0035] In addition, some CCs can be grouped into a set, and DL and UL beam management can be performed jointly using unified signaling, for example, updating the TCI beam / beam pool for PDCCH / CORESET, PDSCH or SRS across multiple CCs with a single command.

[0036] As used herein, "beam" is equivalent to quasi-co-location (QCL) state, transmission configuration indicator (TCI) state, spatial relationship state (also known as spatial relationship information state), reference signal (RS), spatial filter or precoding. Specifically,

[0037] In some embodiments, "Tx beam" is equivalent to QCL state, TCI state, spatial relationship state, DL / UL reference signaling (such as channel state information reference signal (CSI-RS), synchronization signal block (SSB) (also known as SS / PBSH), demodulation reference signal (DMRS), sounding reference signal (SRS) and physical random access channel (PRACH)), Tx spatial filter or Tx precoding;

[0038] In some embodiments, "Rx beam" is equivalent to QCL state, TCI state, spatial relation state, spatial filter, Rx spatial filter or Rx precoding;

[0039] In some embodiments, "beam ID" is equivalent to a QCL state index, a TCI state index, a spatial relation state index, a reference signal index, a spatial filter index, or a precoding index.

[0040] Specifically, the spatial filter can be a UE-side or gNB-side spatial filter, and the spatial filter is also called a spatial-domain filter.

[0041] In some embodiments, the "spatial relationship information" includes one or more reference RSs, which are used to indicate the "spatial relationship" between the target "RS or channel" and the one or more reference RSs, where "spatial relationship" means one or more identical / quasi-cooperative beams, one or more identical / quasi-cooperative spatial parameters, or one or more identical / quasi-cooperative spatial domain filters.

[0042] In some embodiments, "spatial relationship" means a beam, a spatial parameter, or a spatial domain filter.

[0043] In some embodiments, a "QCL state" includes one or more reference RSs and their corresponding QCL type parameters, wherein the 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 parameters (which are also referred to as spatial Rx parameters). In this patent, a "TCL state" is equivalent to a "QCL state". In this patent, for 'QCL-Type A', 'QCL-Type B', 'QCL-Type C' and 'QCL-Type D', there are the following definitions:

[0044] - 'QCL-Type-A': {Doppler shift, Doppler spread, average delay, delay spread}

[0045] - 'QCL-Type-B': {Doppler shift, Doppler spread}

[0046] - 'QCL-Type-C': {Doppler shift, average delay}

[0047] - 'QCL-Type D': {Spatial Rx parameters}

[0048] As used herein, a “UL signal” may be PRACH, PUCCH, PUSCH, UL DMRS, or SRS.

[0049] In some embodiments, a "DL signal" may be a PDCCH, a PDSCH, a SSB, a DL DMRS, or a CSI-RS.

[0050] In some embodiments, group-based reporting includes at least one of "beam group" based reporting and "antenna group" based reporting.

[0051] In some embodiments, a "beam group" includes different Tx beams within a group that can be received or transmitted simultaneously, and / or Tx beams between different groups may not be received or transmitted simultaneously. In addition, the definition of a "beam group" is described from the perspective of a UE.

[0052] In some embodiments, “antenna group” means that different Tx beams within one group may not be received or transmitted at the same time, and / or Tx beams between different groups may be received or transmitted at the same time.

[0053] In some embodiments, “antenna group” means that more than N different Tx beams within a group may not be received or transmitted simultaneously, and / or no more than N different Tx beams within a group may be received or transmitted simultaneously, where N is a positive integer.

[0054] In some embodiments, "antenna groups" means that Tx beams between different groups can be received or transmitted simultaneously.

[0055] In some embodiments, an "antenna group" is described from the perspective of a UE.

[0056] In some embodiments, an antenna group is equivalent to an antenna port group, a panel or a UE panel. In addition, antenna group switching is equivalent to panel switching.

[0057] In some embodiments, "group information" is equivalent to "grouping information of one or more reference signals", "resource set", "panel", "subarray", "antenna group", "antenna port group", "group of antenna ports", "beam group", "transmission entity / unit" or "reception entity / unit". In addition, "group information" is intended to indicate some characteristics of the UE panel and related to the UE panel. In addition, "group information" is equivalent to "group state" or "group ID".

[0058] In some embodiments, a "time unit" may be a sub-symbol, a symbol, a time slot, a sub-frame, a frame, or a transmission opportunity.

[0059] In some embodiments, the active antenna group may be equivalent to only an active DL antenna group, only an active UL antenna group, or both an active DL and an active UL antenna group.

[0060] In some embodiments, the UL power control parameters include a target power (also referred to as P0), a path loss RS (also referred to as coupling loss RS), a scaling factor of the path loss (also referred to as α), and a closed loop process.

[0061] In some embodiments, the MAC-CE message includes at least one of: a message reporting a power headroom, or a message reporting a maximum power reduction.

[0062] First example: UE-initialized simultaneous DL transmission and UL panel switching

[0063] As a UE event driven procedure for updating the DL simultaneous transmission and UL activity panels, aspects regarding the triggering event, the format of the UE report, the gNB response and the default UE behavior after the gNB response should be specified.

[0064] Step-1: For the triggering event, at least one of the following should be supported:

[0065] Step-1a: TRP / Panel specific beam fault detection, or panel switching detection

[0066] For the first DL RS or the first set of information (corresponding to the current link or the old link, for example, for PDCCH),

[0067] A channel quality (eg, block error ratio (BLER), uplink duty cycle, or maximum power reduction (MPR)) corresponding to the first DL RS or the first group of information is higher than or equal to a threshold.

[0068] A channel quality (eg, path loss, RSRP, or CQI) corresponding to the first DL RS or the first group of information is lower than or equal to a threshold.

[0069] The above events correspond to a panel, a CC / BWP in a CC / BWP group, or a CORESET in a CORESET pool.

[0070] In addition, the mapping between the first DL RS and the first group information is changed. In other words, the channel quality based on the first DL RS and the first group information is worse than or equal to the threshold.

[0071] Step-1b: New Candidate Beam / Panel Identification

[0072] For the second DL RS or the second set of information (corresponding to the new link),

[0073] The channel quality (eg, block error rate BLER, uplink duty cycle, or maximum power reduction (MPR)) is lower than or equal to a threshold.

[0074] The channel quality (eg, path loss, RSRP, or CQI) is higher than or equal to a threshold.

[0075] The first and second DL RSs correspond to the same group information, the same CC / BWP in a CC / BWP group, or the same CORESET pool.

[0076] In addition, the channel quality based on the second DL RS and the second group of information is better than or equal to the threshold.

[0077] In addition, the event condition also includes that the channel quality based on the first DL RS and the first group of information is worse than the channel quality based on the second DL RS and the second group of information.

[0078] In addition, the event condition further includes that the channel quality based on the first DL RS and the first group of information is worse than the channel quality based on the second DL RS and the second group of information + an offset. In addition, the offset is configurable.

[0079] Furthermore, the channel quality corresponds to a change in channel quality, such as a change compared to a last report.

[0080] Step-2: UE reporting process, such as reporting format

[0081] Report the second DL RS (corresponding to a new link identified on a new candidate beam / panel), second set information, CC or CC group, channel quality (e.g., MPR, RSRP, CQI), or CORESET pool in a reporting format.

[0082] The report is carried by PUCCH, UCI (eg, as RSRP, SINR or CSI report) or by MAC-CE (eg, MPR or PHR report).

[0083] The second DL RS or the corresponding channel quality is associated with a second set of information, a CC, a CC group or a CORESET pool.

[0084] In addition, the channel quality of the second DL RS is received according to the group information.

[0085] In addition, the second DL RS may be applied to a CC, a CC group, or a CORESET pool.

[0086] Step-3: gNB response process, such as gNB response signaling

[0087] Furthermore, the signaling may be a DCI or a MAC-CE command to confirm a UE report, such as switching a simultaneous transmission mode or an active UL panel for transmission.

[0088] In addition, the signaling may be at least one of the following:

[0089] #1 PDCCH or DCI with a dedicated RNTI for the procedure;

[0090] #2 PDCCH or DCI in the control resource set (CORESET) or search space used for this process;

[0091] #3 DCI code point associated with the process;

[0092] #4 is used to indicate the new data of the PUSCH carrying the report, for example, the new data indication after switching;

[0093] Further condition: The indication for new data is associated with the same HARQ process number as the PUSCH carrying the report.

[0094] #5 Reconfiguration or activation of TCI associated with PDCCH, or reconfiguration or activation of spatial relationship associated with PUCCH.

[0095] Step-4: Default UE behavior after gNB response

[0096] At least one of the following is supported.

[0097] Mapping between the second DL RS and the second group information is applied.

[0098] A DL signal is received according to the QCL hypothesis corresponding to the second DL RS.

[0099] Furthermore, the DL signal and the second DL RS are associated with the same CC / BWP, the same CC / BWP group, or the same CORESET pool.

[0100] In addition, the DL signal and the second DL RS are associated with the same group information (eg, UE panel).

[0101] The UL signal is transmitted according to the spatial relationship corresponding to the second DL RS, or according to the second DL RS which is a path loss RS.

[0102] In addition, the UL signal and the second UL RS are associated with the same CC / BWP, the same CC / BWP group, or the same CORESET pool.

[0103] Furthermore, the UL signal and the second UL RS are associated with the same group information (eg, UE panel).

[0104] The second DL RS may be applied to a CC / BWP, or a CC / BWP group, or a CORESET pool corresponding to the first DL RS.

[0105] In addition, when the CC is reported in step 2, the second DL RS or the second group information is applied to all CCs in the CC group including the CC.

[0106] Note that step 1 may not always be necessary, and in some cases, alternatively, the following steps 2 to 4 are controlled only by the gNB. For example, the step 2 process reported by the UE is controlled and initialized by the gNB (e.g., periodic or aperiodic beam or panel reporting), and the corresponding steps 3 and 4 are performed accordingly (e.g., based on the reporting results in step 2).

[0107] Figure 2B is an example of a UE-initiated report taking into account UE rotation. Figure 2BThe same DL Tx beam but different UE DL Rx beams for transmission under UE rotation are shown. First, the data link transmission for link-1 and the data link transmission for link-2 can be received simultaneously by two independent UE panels. However, after a period of time, UE rotation occurs and the corresponding link-1 and link-2 share the same UE panel, which means that the UE cannot receive link-1 and link-2 at the same time. It should be noted that from the perspective of the gNB, the gNB Tx beam remains unchanged. From the perspective of the trigger condition, the channel quality of data transmission based on UE panel-1 is worse than the channel quality of data transmission based on UE panel-2. Therefore, according to the event of the mapping change, the mapping between DL RS and group information (e.g., UE panel) can be reported to the gNB.

[0108] Second example: UE-initialized simultaneous transmission switching process

[0109] Regarding UE-initiated DL simultaneous transmissions, the UE may support simultaneous reception mode by using two or more independent UE panels. After receiving a UE capability report to support this simultaneous mode, the gNB may configure enabling signaling for DL ​​channels with two or more different TCI / QCL states, or receive two independent DL channels simultaneously. In addition, according to the UE-initiated report, group information indication for updating DL and / or UL transmissions should be considered. Figure 3 An example can be found in .

[0110] Within the measurement window, no panel restrictions or mapping between DL RS and panels are applied, and thus the UE can find the best mapping between DL RS and panels, for example with the goal of maximizing RSRP. This means that the UE performs a non-simultaneous reception mode during this period.

[0111] After the measurement window, the UE shall switch the mode from non-simultaneous reception to simultaneous reception. However, since there is no report and gNB response, the UE shall perform the previous mapping between DL RS and group information.

[0112] Then, the group-based report is initiated by the UE to provide one or more DL RSs and corresponding group information, which means that a new mapping between the DL RSs and the group information is provided.

[0113] Once the gNB response to the new report is received, the new mapping between DL RS and group information is applied accordingly.

[0114] Third example: Procedure for UE reporting driven by MPE events

[0115] In order to prevent the impact of radio power on human health, MPE requirements should be met according to local laws and regulations. More specifically, additional MPR (also known as P-MPE) is also applied to the maximum transmission power of UL transmission. This means that even if the UE can support a stronger transmission power, the UE has to reduce the maximum transmission power due to the impact of MPE. Figure 4 An example can be found in , where there is a strong MPE impact on Link-2.

[0116] For trigger events, at least one of the following should be supported

[0117] For the first DL RS or the first group of information, the corresponding maximum power reduction (MPR) or uplink duty cycle must be higher than or equal to a threshold.

[0118] For the second DL RS or the second panel, the corresponding RSRP after subtracting the MPR associated with the second DL RS or the second panel is higher than or equal to the threshold.

[0119] The first and second DL RSs correspond to the same group information, the same CC / BWP in a CC / BWP group, or the same CORESET pool.

[0120] UE report format

[0121] The second DL RS, the second set of information, and the channel quality (eg, MPR and RSRP) are reported in a reporting format.

[0122] This reporting is performed by MAC-CE regarding the MPR or PHR (Power Headroom Reporting) procedure.

[0123] When the MAC-CE is for PHR reporting, the PHR result is determined according to the second DL RS and / or the second set of information.

[0124] gNB response signaling

[0125] Furthermore, the signalling may be an indication of the receipt of new data (in the received HARQ information) for the PUSCH carrying the report. Further condition: the indication for the new data is associated with the same HARQ process number.

[0126] Default UE behavior after gNB response, at least one of the following applies

[0127] Mapping between the second DL RS and the second group information is applied.

[0128] A DL signal (eg, PDCCH or PDSCH) is received according to a QCL assumption corresponding to the second DL RS or second set of information.

[0129] A UL signal (eg, PUCCH or PUSCH) is transmitted according to a spatial relationship and a path loss corresponding to the second DL RS or the second group information.

[0130] The second DL RS may be applied to a CC / BWP, or a CC / BWP group, or a CORESET pool corresponding to the first DL RS.

[0131] As a result, the UE reports the DL RS and group information corresponding to link 3, and after receiving the gNB response, the UL and DL transmissions corresponding to panel-2 are updated to the DL RS and group information corresponding to link 3.

[0132] Example 4: UE behavior after receiving gNB response

[0133] Once the gNB response is received, the UE request from this report should be applied accordingly. However, depending on the command decoding the gNB response, the end event or start event for the mapping between panel and DL RS should be clarified.

[0134] During this time the gNB assumes no change until the next gNB confirmation or report from the UE

[0135] There are new measurement limits for initializing remapping between any panel and DL RS;

[0136] The mapping between DL RS and UE panel should be updated X time units after a new measurement.

[0137] Group based reporting with a flag configured by the gNB can be assumed.

[0138] When the flag is configured to enable a new mapping between DL RS and group information, the group information should be reported; otherwise, the group information is not reported.

[0139] The mapping between DL RS and group information is applied until the time unit corresponding to the next group-based report plus applicable timing depending on UE capabilities.

[0140] There is a new indication from the gNB side to confirm update panel mapping or group based reporting.

[0141] Figure 5An example of a wireless communication method according to some example embodiments is shown. At 510, the method includes: receiving, by a wireless device, one or more reference signals from a network device. At 520, the method includes: transmitting, by the wireless device, a report, wherein the report includes at least one of a first reference signal, a channel quality, an uplink transmission parameter, a first set of information, a carrier component, or a control resource set pool.

[0142] Figure 6 Another example of a method of wireless communication according to some example embodiments is shown. At 610, the method includes: transmitting, by a network device, one or more reference signals to a wireless device. At 620, the method includes: receiving, by a network device, a report, wherein the report includes at least one of a first reference signal, a channel quality, an uplink transmission parameter, a first set of information, a carrier component, or a control resource set pool.

[0143] Figure 7 An example of a wireless communication system 700 is shown in which the technology according to one or more embodiments of the present technology can be applied. The wireless communication system 700 may include: one or more base stations (BS) 705a, 705b, one or more wireless devices 710a, 710b, 710c, 710d, and a core network 725. The base stations 705a, 705b can provide wireless services to the wireless devices 710a, 710b, 710c, and 710d in one or more wireless sectors. In some embodiments, the base stations 705a, 705b include directional antennas that generate two or more directional beams to provide wireless coverage in different sectors.

[0144] The core network 725 can communicate with one or more base stations 705a, 705b. The core network 725 provides connectivity with other wireless communication systems and wired communication systems. The core network may include one or more service subscription databases to store information related to the subscribed wireless devices 710a, 710b, 710c and 710d. The first base station 705a can provide wireless services based on a first wireless access technology, and the second base station 705b can provide wireless services based on a second wireless access technology. Base stations 705a and 705b can be co-located or can be installed separately on site according to the deployment scenario. Wireless devices 710a, 710b, 710c and 710d can support a variety of different wireless access technologies. The techniques and embodiments described in this document can be implemented by the base stations or wireless devices described in this document.

[0145] Figure 8805 is a block diagram of a portion of a wireless station according to one or more embodiments of the present technology. A wireless station 805 (such as a base station or a wireless device (or UE)) may include a processor electronic device 810, such as a microprocessor, that implements one or more of the wireless technologies presented in this document. The wireless station 805 may include a transceiver electronic device 815 for sending and / or receiving wireless signals on one or more communication interfaces (such as an antenna 820). The radio station 805 may include other communication interfaces for transmitting and receiving data. The wireless station 805 may include one or more memories (not explicitly shown) that are configured to store information such as data and / or instructions. In some embodiments, the processor electronic device 810 may include at least a portion of the transceiver electronic device 815. In some embodiments, at least some of the disclosed techniques, modules, or functions are implemented using the wireless station 805. In some embodiments, the wireless station 805 may be configured to perform the methods described in this document.

[0146] The technical solutions described in the following clauses may preferably be implemented by some embodiments.

[0147] Clause 1. A method of wireless communication, comprising: receiving, by a wireless device, one or more reference signals from a network device; and transmitting, by the wireless device, a report, wherein the report comprises at least one of a first reference signal, a channel quality, an uplink transmission parameter, a first set of information, a carrier component, or a control resource set pool.

[0148] Clause 2. The method of clause 1, wherein the first reference signal or the uplink transmission parameter is associated with at least one of the first set of information, the carrier component, or the control resource set pool.

[0149] Clause 3. A method as described in clause 1, wherein the uplink transmission parameter includes at least one of a duty cycle, a back-off value, a power headroom, or a maximum power reduction.

[0150] Clause 4. The method of clause 1, further comprising: receiving, by the wireless device, a confirmation message from the network device.

[0151] Clause 5. A method according to clause 4, wherein the confirmation message includes downlink control information (DCI) or a media access control control element (MAC-CE) command.

[0152] Clause 6. A method according to clause 4, wherein the confirmation message includes at least one of the following: a physical downlink control channel (PDCCH) or DCI with a radio network temporary identity (RNTI); a PDCCH or DCI in a control resource set (CORESET) or a search space; a DCI code point; an indication of new data for an uplink shared channel carrying the report; a reconfiguration or activation of a transmission configuration indicator associated with a downlink or uplink channel; or a reconfiguration or activation of a spatial relationship associated with an uplink channel.

[0153] Clause 7. A method according to clause 6, wherein the indication for the new data is associated with a hybrid automatic repeat request (HARQ) process number that is the same as the uplink shared channel that carries the report.

[0154] Clause 8. The method according to Clause 1 further includes at least one of the following: applying a mapping between the first reference signal and the first group of information; receiving a downlink reference signal or a downlink channel based on the first reference signal or the first group of information, or transmitting an uplink reference signal or an uplink channel based on the first reference signal or the first group of information.

[0155] Clause 9. A method according to clause 8, wherein the mapping between the first reference signal and the first set of information is applied a predetermined time period after measuring or reporting.

[0156] Clause 10. The method of clause 8, wherein the mapping between the first reference signal and the first set of information is applied until an offset time after a next set report.

[0157] Clause 11. The method of clause 10, wherein the configuration of the next group report includes a flag configured by the network device.

[0158] Clause 12. The method of clause 11, wherein the group information is reported if the flag is configured to enable a new mapping between reference signals and the group information.

[0159] Clause 13. A method according to clause 8, wherein the downlink reference signal or the downlink channel and the first reference signal are associated with the same carrier component, the same carrier component group, the same group information or the same control resource set pool.

[0160] Clause 14. A method according to clause 8, wherein the uplink reference signal or the uplink channel and the first reference signal are associated with the same carrier component, the same carrier component group, the same group information or the same control resource set pool.

[0161] Clause 15. The method of clause 1, wherein the first condition comprises a metric corresponding to the second reference signal or the second set of information being less than or equal to a first threshold, and wherein the first condition is satisfied.

[0162] Clause 16. The method of clause 15, wherein the metric comprises a block error rate, an uplink duty cycle, or a maximum power reduction, and wherein the metric is greater than or equal to the first threshold.

[0163] Clause 17. The method of clause 15, wherein the metric comprises a channel quality indicator, path loss, or reference signal received power, and wherein the metric is less than or equal to the first threshold.

[0164] Clause 18. The method of clause 1, wherein the second condition comprises a metric corresponding to a third reference signal or a third set of information being greater than or equal to a second threshold, and wherein the second condition is satisfied.

[0165] Clause 19. The method of clause 18, wherein the metric comprises a block error rate, an uplink duty cycle, or a maximum power reduction, and wherein the metric is less than or equal to the second threshold.

[0166] Clause 20. The method of clause 18, wherein the metric comprises a channel quality indicator, path loss, or reference signal received power, and wherein the metric is greater than or equal to the second threshold.

[0167] Clause 21. A method according to clause 1, wherein the third condition includes at least one of the following: a metric corresponding to the second reference signal or the second set of information is less than or equal to a second metric corresponding to the third reference signal or the third set of information; or a third metric corresponding to the second reference signal or the second set of information is less than or equal to a fourth metric corresponding to the third reference signal or the third set of information plus an offset, wherein the third condition is satisfied.

[0168] Clause 22. The method of clause 21, wherein the offset is configured via a command transmitted by the network device.

[0169] Clause 23. A method according to clause 18 or 21, wherein the third reference signal is the first reference signal, or wherein the third set of information is the first set of information.

[0170] Clause 24. A method according to any one of clauses 13 to 21, wherein the metric corresponds to a change in a metric result.

[0171] Clause 25. The method of clause 1, wherein the report comprises at least one of a physical uplink control channel, uplink control information, or a medium access control control element (MAC-CE) message.

[0172] Clause 26. The method of clause 1, wherein the triggering event comprises exceeding a maximum tolerable exposure of a user to radio frequency energy, and wherein the triggering event occurs.

[0173] Clause 27. A method of wireless communication, comprising: detecting, by a wireless device, a triggering event that limits the transmit power of a first beam of the wireless device, wherein the first beam has a maximum power reduction greater than or equal to a first threshold, or an uplink duty cycle greater than or equal to a second threshold; identifying, by the wireless device, a new beam, wherein the new beam has a value greater than or equal to a third threshold after subtracting a second maximum power reduction from a reference signal received power; and reporting, by the wireless device, at least one parameter of the new beam to the network device in a report, wherein the report is transmitted via a MAC-CE maximum power reduction procedure or a power headroom reporting procedure.

[0174] Clause 28. The method of clause 27, wherein the triggering event comprises exceeding a maximum allowable exposure to radio frequency energy to the user, and wherein the triggering event occurs.

[0175] Clause 29. A method of wireless communication, comprising: transmitting one or more reference signals by a network device to a wireless device; receiving a report by the network device, wherein the report includes at least one of a first reference signal, a channel quality, an uplink transmission parameter, a first set of information, a carrier component, or a control resource set pool.

[0176] Clause 30. The method of clause 29, wherein the first reference signal or the uplink transmission parameter is associated with at least one of the first set of information, the carrier component, or the control resource set pool.

[0177] Clause 31. A method as described in clause 29, wherein the uplink transmission parameter includes at least one of a duty cycle, a back-off value, a power headroom, or a maximum power reduction.

[0178] Clause 32. The method of clause 29, further comprising: transmitting, by the network device, a confirmation message to the wireless device.

[0179] Clause 33. A method as described in clause 32, wherein the confirmation message includes downlink control information (DCI) or a media access control control element (MAC-CE) command.

[0180] Clause 34. A method according to clause 32, wherein the confirmation message includes at least one of the following: a PDCCH or DCI with an RNTI; a PDCCH or DCI in a CORESET or search space; a DCI code point; an indication of new data for an uplink shared channel carrying the report; a reconfiguration or activation of a transmission configuration indicator associated with a downlink or uplink channel; or a reconfiguration or activation of a spatial relationship associated with an uplink channel.

[0181] Clause 35. A method as described in clause 34, wherein the uplink shared channel used for the indication of the new data and carrying the report is associated with the same hybrid automatic repeat request (HARQ) process number.

[0182] Clause 36. The method according to Clause 29 further includes at least one of the following: applying a mapping between the first reference signal and the first group of information; transmitting a downlink reference signal or a downlink channel based on the first reference signal or the first group of information, or receiving an uplink reference signal or an uplink channel based on the first reference signal or the first group of information.

[0183] Clause 37. A method according to clause 36, wherein the mapping between the first reference signal and the first set of information is applied a predetermined time period after measuring or reporting.

[0184] Clause 38. The method of clause 36, wherein the mapping between the first reference signal and the first set of information is applied until an offset time after a next set report.

[0185] Clause 39. The method of clause 38, wherein the configuration of the next group report includes a flag configured by the network device.

[0186] Clause 40. A method according to clause 36, wherein the downlink reference signal or the downlink channel and the first reference signal are associated with the same carrier component, the same carrier component group, the same group information or the same control resource set pool.

[0187] Clause 41. A method according to clause 36, wherein the uplink reference signal or the uplink channel and the first reference signal are associated with the same carrier component, the same carrier component group, the same group information or the same control resource set pool.

[0188] Clause 42. The method of clause 29, wherein the first condition comprises a metric corresponding to the second reference signal or the second set of information being less than or equal to a first threshold, and wherein the first condition is satisfied.

[0189] Clause 43. A method according to clause 42, wherein the metric comprises a block error rate, an uplink duty cycle, or a maximum power reduction, and wherein the metric is greater than or equal to the first threshold.

[0190] Clause 44. The method of clause 42, wherein the metric comprises a channel quality indicator, path loss, or reference signal received power, and wherein the metric is less than or equal to the first threshold.

[0191] Clause 45. The method of clause 29, wherein the second condition comprises a metric corresponding to a third reference signal or a third set of information being greater than or equal to a second threshold, and wherein the second condition is satisfied.

[0192] Clause 46. A method as described in clause 45, wherein the metric comprises a block error rate, an uplink duty cycle, or a maximum power reduction, and wherein the metric is less than or equal to the second threshold.

[0193] Clause 47. The method of clause 45, wherein the metric comprises a channel quality indicator, path loss, or reference signal received power, and wherein the metric is greater than or equal to the second threshold.

[0194] Clause 48. A method according to clause 29, wherein the third condition includes at least one of the following: a metric corresponding to the second reference signal or the second set of information is less than or equal to a second metric corresponding to the third reference signal or the third set of information; or a third metric corresponding to the second reference signal or the second set of information is less than or equal to a fourth metric corresponding to the third reference signal or the third set of information plus an offset, wherein the third condition is satisfied.

[0195] Clause 49. The method of clause 48, wherein the offset is configured via a command transmitted by the network device.

[0196] Clause 50. The method of clause 45 or 48, wherein the third reference signal is the first reference signal, or wherein the third set of information is the first set of information.

[0197] Clause 51. A method according to any one of clauses 40 to 48, wherein the metric corresponds to a change in a metric result.

[0198] Clause 52. The method of clause 29, wherein the report comprises at least one of a physical uplink control channel, uplink control information, or a medium access control control element (MAC-CE) message.

[0199] Clause 53. The method of clause 39, wherein the group information is reported in a case where the flag is configured to enable a new mapping between reference signals and the group information.

[0200] Clause 54. An apparatus for wireless communications, comprising a processor, wherein the processor is configured to implement the method of any one of Claims 1 to 53.

[0201] Clause 55. A computer-readable program storage medium having stored thereon codes which, when executed by a processor, cause the processor to implement the method of any one of claims 1 to 53.

[0202] In the technical solution described in the clause format herein, the wireless device may be a UE, such as a mobile phone or a tablet computer or any other device capable of wireless communication, and the network device may be a network-side device such as a base station. Figure 8 An example hardware platform for implementing a wireless node or network node is shown.

[0203] It will be appreciated that this document discloses techniques that can be embodied in various embodiments to establish and manage multicast sessions in various scenarios. The disclosed and other embodiments, modules, and functional operations described in this document can be implemented in digital electronic circuits or computer software, firmware, or hardware (including the structures disclosed in this document and their equivalents) or a combination of one or more thereof. The disclosed and other embodiments can be implemented as one or more computer program products, that is, one or more modules of computer program instructions encoded on a computer-readable medium and executed or controlled by a data processing device to control the operation of the data processing device. The computer-readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter that affects a machine-readable propagation signal, or one or more combinations thereof. The term "data processing device" covers all devices, equipment, and machines for processing data, including, for example, a programmable processor, a computer, or multiple processors or computers. In addition to hardware, the device can also include code that creates an execution environment for the computer program in question, for example, code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. A propagated signal is an artificially generated signal, eg, a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to suitable receiver apparatus.

[0204] A computer program (also referred to as a program, software, software application, script, or code) may be written in any form of programming language, including compiled or interpreted languages, and may be deployed in any form, including as a standalone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program may be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, subroutines, or portions of code). A computer program may be deployed to execute on one computer, or on multiple computers located at one site or distributed at multiple sites and interconnected by a communications network.

[0205] The processes and logic flows described in this document may be performed by one or more programmable processors running one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows may also be performed by, and the apparatus may also be implemented as, a dedicated logic circuit such as an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit).

[0206] Processors suitable for executing computer programs include, by way of example, both general-purpose and special-purpose microprocessors and any one or more processors of any kind of digital computer. Typically, the processor will receive instructions and data from a read-only memory or a random access memory or both. The essential elements of a computer are a processor for executing instructions and one or more memory devices for storing instructions and data. Typically, a computer will also include one or more mass storage devices for storing data, such as magnetic, magneto-optical or optical disks, or be operatively coupled to receive data from or transfer data to or to a mass storage device, or both. However, a computer need not have such a device. Computer-readable media suitable for storing computer program instructions and data include, by way of example, all forms of non-volatile memory, media and memory devices, including, by way of example, semiconductor memory devices, such as EPROM, EEPROM and flash memory devices; magnetic disks, such as internal hard disks or removable disks; magneto-optical disks; and CD ROM and DVD-ROM disks. The processor and memory may be supplemented by, or incorporated into, dedicated logic circuits.

[0207] Some embodiments may preferably implement one or more of the following solutions listed in clause format. The following clauses are supported and further described in the above examples and throughout the document. As used in the following clauses and claims, a wireless terminal may be a user equipment, a mobile station, or any other wireless terminal including a fixed node such as a base station. A network node includes a base station, including a next generation Node B (gNB), an enhanced Node B (eNB), or any other device that performs as a base station. A resource range may refer to a range of time-frequency resources or blocks.

Claims

1. A method of wireless communication, include: receiving, by the wireless device, one or more reference signals from a network device; transmitting, by the wireless device, a report, wherein the report comprises a first reference signal, a first set of information, and a carrier component, Wherein, the first reference signal is associated with a control resource set CORESET pool; receiving, by the wireless device, a confirmation message from the network device, wherein the confirmation message includes downlink control information (DCI) in a control resource set CORESET or a search space having an indication of new data for the reported uplink shared channel; and Do at least one of the following: receiving a downlink reference signal or a downlink channel according to the first reference signal, wherein the downlink reference signal or the downlink channel and the first reference signal are associated with the same control resource set pool, or According to the first reference signal, an uplink reference signal or an uplink channel is transmitted, wherein the uplink reference signal or the uplink channel and the first reference signal are associated with the same control resource set pool.

2. The method according to claim 1, in, The report also includes a maximum power reduction for uplink transmissions.

3. The method according to claim 1, in, The indication of the new data and the uplink shared channel carrying the report are associated with the same hybrid automatic repeat request HARQ process number.

4. The method of claim 1, the report further comprising a capability report of the wireless device, the capability report indicating that the wireless device supports simultaneous downlink transmission or uplink panel switching.

5. The method according to claim 1, in, The first condition includes that a metric corresponding to the second reference signal or the second set of information is less than or equal to a first threshold, and wherein the first condition is satisfied.

6. The method according to claim 5, in, The metric comprises a block error rate, and wherein the metric is greater than or equal to the first threshold.

7. The method according to claim 1, in, The second condition includes that a metric corresponding to the third reference signal or the third set of information is greater than or equal to a second threshold, and wherein the second condition is satisfied.

8. The method according to claim 7, in, The metric comprises a block error rate, an uplink duty cycle, or a maximum power reduction, and wherein the metric is less than or equal to the second threshold.

9. The method according to claim 1, in, The report also includes a Medium Access Control Element MAC-CE message.

10. A method of wireless communication, include: transmitting, by a network device, one or more reference signals to a wireless device; receiving, by the network device, a report, wherein the report includes a first reference signal, a first set of information, and a carrier component, Wherein, the first reference signal is associated with a control resource set CORESET pool; transmitting, by the network device, a confirmation message to the wireless device, wherein the confirmation message includes downlink control information (DCI) in a control resource set CORESET or a search space having an indication of new data of the reported uplink shared channel; and Do at least one of the following: transmitting a downlink reference signal or a downlink channel according to the first reference signal, wherein the downlink reference signal or the downlink channel and the first reference signal are associated with the same control resource set pool, or An uplink reference signal or an uplink channel is received according to the first reference signal, wherein the uplink reference signal or the uplink channel and the first reference signal are associated with the same control resource set pool.

11. The method according to claim 10, in, The report also includes a maximum power reduction for uplink transmissions.

12. The method according to claim 10, in, The indication of the new data and the uplink shared channel carrying the report are associated with the same hybrid automatic repeat request HARQ process number.

13. The method according to claim 10, in, The first condition includes that a metric corresponding to the second reference signal or the second set of information is less than or equal to a first threshold, and wherein the first condition is satisfied.

14. The method according to claim 13, in, The metric comprises a block error rate, and wherein the metric is greater than or equal to the first threshold.

15. The method according to claim 10, in, The second condition includes that a metric corresponding to the third reference signal or the third set of information is greater than or equal to a second threshold, and wherein the second condition is satisfied.

16. The method according to claim 15, in, The metric comprises a block error rate, and wherein the metric is less than or equal to the second threshold.

17. The method according to claim 10, in, The report also includes a Medium Access Control Element MAC-CE message.

18. An apparatus for wireless communication, comprising a processor, in, The processor is configured to implement the method according to any one of claims 1 to 17.

19. A computer-readable program storage medium having codes stored thereon, which, when executed by a processor, cause the processor to implement the method according to any one of claims 1 to 17.

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