Devices and methods of communication
The event triggered L1 measurement reporting solution addresses unclear reporting issues in LTM by allowing terminal devices to transmit second MAC CEs with measurement information, enhancing LTM mobility and reducing latency.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- NEC CORP
- Filing Date
- 2024-12-12
- Publication Date
- 2026-06-18
AI Technical Summary
The reporting of event triggered L1 measurement for Layer 1 (L1) or Layer 2 (L2) triggered mobility (LTM) is unclear and needs further development to reduce mobility latency.
A terminal device determines that an uplink grant is insufficient to accommodate first MAC CEs containing measurement information and transmits a set of second MAC CEs with measurement information based on the quantity of beams, size of the uplink grant, timing of condition fulfillment, or priority of configurations, while a network device receives these second MAC CEs.
Enhances LTM by supporting event triggered L1 measurement reporting, reducing signaling overhead and improving LTM mobility.
Smart Images

Figure CN2024138937_18062026_PF_FP_ABST
Abstract
Description
DEVICES AND METHODS OF COMMUNICATIONTECHNICAL FIELD
[0001] Embodiments of the present disclosure generally relate to the field of telecommunication, and in particular, to devices and methods of communication for layer 1 (L1) or layer 2 (L2) triggered mobility (LTM) .BACKGROUND
[0002] LTM is a mobility procedure in which a network device receives a L1 measurement report from a terminal device, and changes the terminal device’s serving cell by a cell switch command signaled via a medium access control (MAC) control element (CE) . To further reduce mobility latency, it is proposed to support conditional LTM. For conditional LTM, a cell switch is not triggered by the MAC CE, but by a condition fulfilled at the terminal device side. Currently, it is proposed to design an event triggered L1 measurement for LTM. However, a reporting of the event triggered L1 measurement for LTM is still unclear and needs to be further developed.SUMMARY
[0003] In general, embodiments of the present disclosure provide methods, devices and computer storage media of communication for LTM.
[0004] In a first aspect, there is provided a terminal device. The terminal device comprises a processor. The processor is configured to cause the terminal device to: determine that an uplink grant is insufficient to accommodate a set of first MAC CEs comprising first measurement information associated with a set of configurations for a L1 measurement reporting plus a subheader of each of the set of first MAC CEs; and transmit, to a network device via the uplink grant, a set of second MAC CEs comprising second measurement information based on at least one of the following: quantity of beams, a size of the uplink grant, a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, or a priority of each of the set of configurations.
[0005] In a second aspect, there is provided a network device. The network device comprises a processor. The processor is configured to cause the network device to: transmit, to a terminal device, a set of configurations for a L1 measurement reporting; and receive, from the terminal device via an uplink grant that is insufficient to accommodate a set of first MAC CEs comprising first measurement information associated with the set of configurations plus a subheader of each of the set of first MAC CEs, a set of second MAC CEs comprising second measurement information based on at least one of the following: quantity of beams, a size of the uplink grant, a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, or a priority of each of the set of configurations.
[0006] In a third aspect, there is provided a method of communication at a terminal device. The method comprises: determining that an uplink grant is insufficient to accommodate a set of first MAC CEs comprising first measurement information associated with a set of configurations for a L1 measurement reporting plus a subheader of each of the set of first MAC CEs; and transmitting, to a network device via the uplink grant, a set of second MAC CEs comprising second measurement information based on at least one of the following: quantity of beams, a size of the uplink grant, a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, or a priority of each of the set of configurations.
[0007] In a fourth aspect, there is provided a method of communication at a network device. The method comprises: transmitting, to a terminal device, a set of configurations for a L1 measurement reporting; and receiving, from the terminal device via an uplink grant that is insufficient to accommodate a set of first MAC CEs comprising first measurement information associated with the set of configurations plus a subheader of each of the set of first MAC CEs, a set of second MAC CEs comprising second measurement information based on at least one of the following: quantity of beams, a size of the uplink grant, a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, or a priority of each of the set of configurations.
[0008] In a fifth aspect, there is provided a computer readable medium having instructions stored thereon. The instructions, when executed on at least one processor, cause the at least one processor to perform the method according to third or fourth aspect of the present disclosure.
[0009] Other features of the present disclosure will become easily comprehensible through the following description.BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Through the more detailed description of some embodiments of the present disclosure in the accompanying drawings, the above and other objects, features and advantages of the present disclosure will become more apparent, wherein:
[0011] FIG. 1 illustrates an example communication network in which some embodiments of the present disclosure can be implemented;
[0012] FIG. 2 illustrates a signaling chart illustrating an example process of communication according to embodiments of the present disclosure;
[0013] FIG. 3 illustrates a flowchart of an example method of communication implemented at a terminal device in accordance with some embodiments of the present disclosure;
[0014] FIG. 4 illustrates a flowchart of an example method of communication implemented at a network device in accordance with some embodiments of the present disclosure; and
[0015] FIG. 5 illustrates a simplified block diagram of a device that is suitable for implementing embodiments of the present disclosure.
[0016] Throughout the drawings, the same or similar reference numerals represent the same or similar element.DETAILED DESCRIPTION
[0017] Principle of the present disclosure will now be described with reference to some embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitations as to the scope of the disclosure. The disclosure described herein can be implemented in various manners other than the ones described below.
[0018] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.
[0019] As used herein, the term ‘terminal device’ refers to any device having wireless or wired communication capabilities. Examples of the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, tablets, wearable devices, Internet of things (IoT) devices, ultra-reliable and low latency communications (URLLC) devices, Internet of everything (IoE) devices, machine type communication (MTC) devices, device on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure / network, devices for integrated access and backhaul (IAB) , small data transmission (SDT) , mobility, multicast and broadcast services (MBS) , positioning, dynamic / flexible duplex in commercial networks, reduced capability (RedCap) , space borne vehicles or air borne vehicles in non-terrestrial networks (NTN) including Satellites and high altitude platforms (HAPs) encompassing unmanned aircraft systems (UAS) , extended reality (XR) devices including different types of realities such as augmented reality (AR) , mixed reality (MR) and virtual reality (VR) , the unmanned aerial vehicle (UAV) commonly known as a drone which is an aircraft without any human pilot, devices on high speed train (HST) , or image capture devices such as digital cameras, sensors, gaming devices, music storage and playback appliances, or Internet appliances enabling wireless or wired Internet access and browsing and the like. The ‘terminal device’ can further has ‘multicast / broadcast’ feature, to support public safety and mission critical, V2X applications, transparent IPv4 / IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over wireless, group communications and IoT applications. It may also incorporate one or multiple subscriber identity module (SIM) as known as multi-SIM. The term ‘terminal device’ can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.
[0020] The term ‘network device’ refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate. Examples of a network device include, but not limited to, a Node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNB) , a transmission reception point (TRP) , a remote radio unit (RRU) , a radio head (RH) , a remote radio head (RRH) , an IAB node, a low power node such as a femto node, a pico node, a reconfigurable intelligent surface (RIS) , network-controlled repeaters, and the like.
[0021] The terminal device or the network device may have artificial intelligence (AI) or machine learning (ML) capability. It generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
[0022] The terminal or network device may work on several frequency ranges, e.g. FR1 (410 MHz to 7125 MHz) , FR2 (24.25GHz to 71GHz) , frequency band larger than 100GHz as well as Tera Hertz (THz) . It can further work on licensed / unlicensed / shared spectrum. The terminal device may have more than one connections with the network devices under multi-radio dual connectivity (MR-DC) application scenario. The terminal device or the network device can work on full duplex, flexible duplex and cross division duplex modes.
[0023] The embodiments of the present disclosure may be performed in test equipment, e.g. signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator.
[0024] In one embodiment, the terminal device may be connected with a first network device and a second network device. One of the first network device and the second network device may be a master node and the other one may be a secondary node. The first network device and the second network device may use different radio access technologies (RATs) . In one embodiment, the first network device may be a first RAT device and the second network device may be a second RAT device. In one embodiment, the first RAT device is eNB and the second RAT device is gNB. Information related with different RATs may be transmitted to the terminal device from at least one of the first network device or the second network device. In one embodiment, information A may be transmitted to the terminal device from the first network device and information B may be transmitted to the terminal device from the second network device directly or via the first network device. In one embodiment, information related with configuration for the terminal device configured by the second network device may be transmitted from the second network device via the first network device. Information related with reconfiguration for the terminal device configured by the second network device may be transmitted to the terminal device from the second network device directly or via the first network device.
[0025] As used herein, the singular forms ‘a’ , ‘an’ and ‘the’ are intended to include the plural forms as well, unless the context clearly indicates otherwise. The term ‘includes’ and its variants are to be read as open terms that mean ‘includes, but is not limited to. ’ The term ‘based on’ is to be read as ‘at least in part based on. ’ The term ‘one embodiment’ and ‘an embodiment’ are to be read as ‘at least one embodiment. ’ The term ‘another embodiment’ is to be read as ‘at least one other embodiment. ’ The terms ‘first, ’ ‘second, ’ and the like may refer to different or same objects. For example, A and / or B may indicate cases includes ‘only A’ , ‘both A and B’ , and ‘only B’ . The term ‘at least one of the following items’ or a similar expression thereof refers to any combination of these items, including any combination of a single item or a plurality of items. For example, ‘at least one of A, B, or C’ may represent A, B, C, ‘A and B’ , ‘A and C’ , ‘B and C’ , or ‘A, B and C’ . A / B may refer to A or B. Other definitions, explicit and implicit, may be included below.
[0026] In some examples, values, procedures, or apparatus are referred to as ‘best, ’ ‘lowest, ’ ‘highest, ’ ‘minimum, ’ ‘maximum, ’ or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
[0027] In the context of the present disclosure, the term ‘a cell switch’ may be interchangeably used with ‘reconfiguration with sync for secondary cell group (SCG) or master cell group (MCG) ’ or ‘a cell change’ . The term ‘primary secondary cell (PSCell) ’ refers to a special cell (SpCell) of a SCG, the term ‘primary cell (PCell) ’ refers to a SpCell of a MCG, and the term ‘SpCell’ refers to a primary cell of a SCG or MCG. The term ‘secondary cell (SCell) ’ refers to a secondary cell. The term ‘lower-layer signaling’ may be interchangeably used with ‘L1 / L2 signaling’ . The term ‘radio resource control (RRC) reconfiguration’ may be interchangeably used with ‘RRC reconfiguration message’ . The term ‘L1 measurement’ may be interchangeably used with ‘physical layer measurement’ . The term ‘target candidate cell’ herein may be interchangeably used with ‘target cell’ , ‘candidate target cell’ . The term ‘candidate cell’ herein may refer to ‘LTM candidate cell’ or ‘conditional handover (CHO) candidate cell’ .
[0028] In the context of the present disclosure, the term ‘reference signal (RS) ’ may be interchangeably used with ‘beam’ or ‘measurement resource’ . A RS may be a synchronization signal and physical broadcast channel block (SSB) or channel status information-reference signal (CSI-RS) . The term ‘event triggered L1 measurement reporting (MR) ’ may be interchangeably used with ‘L1 measurement reporting’ or ‘event triggered measurement reporting’ or ‘measurement reporting’ . The term ‘measurement event’ may be interchangeably used with ‘L1 measurement event’ . The term ‘truncated’ may be interchangeably used with ‘segmented’ , and the term ‘truncated MAC CE’ may be interchangeably used with ‘segmented MAC CE’ . The term ‘serving cell’ may be interchangeably used with ‘SpCell’ or ‘SCell’ . The term ‘MR MAC CE’ herein may refer to a MAC CE used for event triggered L1 measurement reporting. The term ‘first MAC CE’ herein may be interchangeably used with ‘first MR MAC CE’ , and the term ‘second MAC CE’ herein may be interchangeably used with ‘second MR MAC CE’ . The term ‘quantity’ herein may be interchangeably used with ‘quality’ or ‘measurement quantity’ .
[0029] Conventionally, layer 3 (L3) mobility uses L3 measurement reporting which supports UE evaluated events for triggering of measurement reports and reduces signaling overhead compared to periodic measurement reporting. Such event triggering is not supported by L1 measurements that are used for LTM mobility. Supporting an event triggered L1 measurement reporting may save signaling overhead for a candidate cell measurement result reporting for a LTM cell switch procedure in order to select a candidate beam / cell to trigger early synchronization, or to select a target beam / cell and trigger a LTM cell switch procedure. Further, supporting an event triggered L1 measurement reporting may make it possible to support a L1 measurement based conditional LTM cell switch.
[0030] Embodiments of the present disclosure provide a solution of communication for an event triggered L1 measurement reporting so as to enhance LTM.
[0031] In the solution, a network device may transmit a set of configurations for a L1 measurement reporting to a terminal device. Upon determination that an uplink grant is insufficient to accommodate a set of first MAC CEs comprising first measurement information associated with the set of configurations for the L1 measurement reporting plus a subheader of each of the set of first MAC CEs, the terminal device may transmit, to the network device via the uplink grant, a set of second MAC CEs comprising second measurement information based on at least one of the following: quantity of beams, a size of the uplink grant, a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, or a priority of each of the set of configurations.
[0032] With the solution, an event triggered L1 measurement reporting may be carried out, and LTM may be further enhanced.
[0033] Principles and implementations of the present disclosure will be described in detail below with reference to the figures.EXAMPLE OF COMMUNICATION NETWORK
[0034] FIG. 1 illustrates a schematic diagram of an example communication network 100 in which some embodiments of the present disclosure can be implemented. As shown in FIG. 1, the communication network 100 may include a terminal device 110 and network devices 120 and 130. The network device 120 may provide one or more cells (cells 122-1, 122-2, 123-1, and 123-2 as shown) to serve one or more terminal devices. The network device 130 may also provide one or more cells (not shown) to serve one or more terminal devices.
[0035] As shown in FIG. 1, the network device 120 may comprise a CU 121 and DUs 122 and 123. The CU 121 may communicate with the DUs 122 and 123. It is to be understood that the two DUs 122 and 123 are shown only for illustration, and more or less DUs may also be provided for implementation of embodiments of the present disclosure.
[0036] As shown in FIG. 1, the DU 122 provides the cells 122-1 and 122-2 and the DU 123 provides the cells 123-1 and 123-2. It is to be understood that this is merely an example, and any of the DUs 122 and 123 may provide more or less cells. The terminal device 110 may communicate with any of these cells. In this example, the terminal device 110 is located in the cell 123-1 and served by the network device 120.
[0037] Although not shown, the network device 130 may comprise a CU and one or more DUs as described in connection with the network device 120. Alternatively, the network device 130 may not be implemented in a CU-DU architecture, and may be implemented in an integrated architecture as shown.
[0038] The CU 121 may communicate with the network device 130. In some embodiments where the network device 130 comprises a CU and one or more DUs, the CU 121 may communicate with the CU of the network device 130.
[0039] As shown in FIG. 1, the communication network 100 may further include a core network (CN) 135. The terminal device 110 may communicate with the CN 135 via the network device 120 and / or the network device 130. In this example, the terminal device 110 may communicate with the CU 121 via the DU 123 and the CU 121 may further communicate with the CN 135.
[0040] It is to be understood that the number of devices or cells or CUs or DUs in FIG. 1 is given for the purpose of illustration without suggesting any limitations to the present disclosure. The communication network 100 may include any suitable number of network devices and / or terminal devices and / or cells and / or CUs and / or DUs adapted for implementing implementations of the present disclosure.
[0041] The communications in the communication network 100 may conform to any suitable standards including, but not limited to, global system for mobile communications (GSM) , long term evolution (LTE) , LTE-evolution, LTE-advanced (LTE-A) , new radio (NR) , wideband code division multiple access (WCDMA) , code division multiple access (CDMA) , GSM EDGE radio access network (GERAN) , machine type communication (MTC) and the like. The embodiments of the present disclosure may be performed according to any generation communication protocols either currently known or to be developed in the future. Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, 5.5G, 5G-advanced networks, or the sixth generation (6G) networks.
[0042] Communication in a direction from the terminal device 110 towards the network device 120 is referred to as UL communication, while communication in a reverse direction from the network device 120 towards the terminal device 110 is referred to as DL communication. The terminal device 110 may move amongst the cells of the network devices 120 and 130 and possibly other network devices. In UL communication, the terminal device 110 may transmit UL data and control information to the network device 120 or 130 via a UL channel. In DL communication, the network device 120 or 130 may transmit DL data and control information to the terminal device 110 via a DL channel.
[0043] With reference to FIG. 1, a CU (e.g., the CU 121) may be responsible for accomplishing functionalities of RRC, service data adaptation protocol (SDAP) and packet data convergence protocol (PDCP) entities, and a DU (e.g., the DU 122 or 123 may be responsible for accomplishing functionalities of the RLC entity, the MAC entity and the PHY entity. In some embodiments, a CU and a DU may be implemented in separate devices. In some embodiments, a CU and a DU may be implemented in the same device. In some embodiments, different DUs may be implemented in separate devices. In some embodiments, different CUs are implemented in separate devices.
[0044] In the context of the present disclosure, a CU (also referred to as a gNB-CU herein) is a logic node hosting RRC, SDAP and PDCP protocols of a gNB or RRC and PDCP protocols of an en-gNB that controls operation of one or more DUs (also referred to as gNB-DUs herein) . The gNB-CU terminates a F1 interface connected with the gNB-DU. A DU is a logical node hosting RLC, MAC and PHY layers of the gNB or en-gNB, and its operation is partly controlled by gNB-CU. One gNB-DU supports one or multiple cells. One cell is supported by only one gNB-DU. The gNB-DU terminates a F1 interface connected with the gNB-CU.
[0045] Continuing to refer to FIG. 1, in some embodiments, the terminal device 110 may be located within the coverage of the cell 123-1, and the terminal device 110 may communicate with the DU 123 of the network device 120 based on a network configuration. In this case, the cell 123-1 may be referred to as a serving cell of the terminal device 110. Other cells such as the cells 122-1, 122-2 and 123-2 may be referred to as candidate cells of the terminal device 110.
[0046] In some embodiments, the terminal device 110 may establish a dual connection (i.e., simultaneous connection) with the network device 120 and the network device 130. In some embodiments, the network device 120 may serve as a master node (MN) . In these embodiments, the terminal device 110 may communicate with the network device 120 via a set of serving cells. The set of serving cells form a MCG, and a primary cell in the MCG is called as PCell. In some scenarios, the PCell may be changed from the cell 123-1 to the cell 131 when an execution condition of the cell 131 for PCell change is fulfilled. This is called as a conditional handover (CHO) .
[0047] In some embodiments, the network device 120 may serve as a secondary node (SN) . In these embodiments, the set of serving cells provided by the network device 120 form an SCG, and a primary cell in the SCG is called as PSCell. In some scenarios, the PSCell may be changed from the cell 123-1 to the cell 131. This is called as a PSCell change.
[0048] In some scenarios, the network device 120 may receive L1 measurement reports from the terminal device 110. Based on the L1 measurement reports, the network device 120 may change a serving cell or add a serving cell of the terminal device 110 through a MAC CE. This procedure is called as LTM. The network device 120 may prepare one or multiple candidate cells and provides candidate cell configurations to the terminal device 110 through a RRC message. Then a LTM cell switch is triggered by selecting one of the candidate cell configurations as a target configuration for the LTM by the network device 120.
[0049] In some scenarios, the terminal device 110 may perform an evaluation for a set of candidate cells allowing LTM by L1 measurements or L3 measurements based execution condition (s) on the set of candidate cells. If the execution condition (s) of a cell switch to a candidate cell is fulfilled, the terminal device 110 may change a serving cell (e.g., PCell or PSCell) of the terminal device 110 to the candidate cell, or add the candidate cell as the serving cell. This procedure is called as conditional LTM herein.
[0050] Embodiments of the present disclosure provide solutions of communication so as to achieve an event triggered L1 measurement reporting and enhance LTM mobility. More details will be described with reference to FIG. 2 below.EXAMPLE IMPLEMENTATION OF EVENT TRIGGERED L1 MEASUREMENT REPORTING
[0051] FIG. 2 illustrates a signaling chart illustrating an example process 200 of communication according to embodiments of the present disclosure. For the purpose of discussion, the process 200 will be described with reference to FIG. 1. The process 200 may involve the terminal device 110 and the network device 120 as illustrated in FIG. 1. In this example, the network device 120 provides a serving cell for the terminal device 110 and also provides one or more candidate cells for the terminal device 110.
[0052] As shown in FIG. 2, at step 210, the network device 120 may transmit, to the terminal device 110, a set of configurations for a L1 measurement reporting (also referred to as an event triggered L1 measurement reporting herein) . The set of configurations may comprise one or multiple configurations. Accordingly, the terminal device 110 may receive the set of configurations from the network device 120.
[0053] In some embodiments, the terminal device 110 may receive the set of configurations from the network device 120 via a RRC reconfiguration message. The terminal device 110 may consider that the terminal device 110 is configured with a corresponding set of event triggered L1 measurement reporting. It is to be understood that the set of configurations may also be carried in any other suitable messages.
[0054] In some embodiments, one configuration of event triggered L1 measurement reporting may be associated with a L1 measurement resource / beam configuration of one candidate cell configured in a LTM configuration. In some embodiments, a configuration of event triggered L1 measurement reporting may comprise an identity and an event configuration. In other words, one configured event triggered L1 measurement reporting for the terminal device 110 may be associated with an identity and an event.
[0055] In some embodiments, the event for L1 measurement reporting may be Event LTM2, LTM3, LTM4, or LTM5, which have the following entering condition and leaving condition: -Event LTM2: a beam of a serving cell becomes worse than an absolute threshold. · Entering condition: Ms + Hys < Thresh · Leaving condition: Ms –Hys > Thresh where Ms denotes a measurement result of the beam of the serving cell, Hys denotes a hysteresis parameter for the Event LTM2, and Thresh denotes a threshold parameter for the Event LTM2. -Event LTM3: a beam of a candidate cell becomes amount of an offset better than a beam of a serving cell. · Entering condition: Mc + Ofc –Hys > Ms + Ofs + Off · Leaving condition: Mc + Ofc + Hys < Ms + Ofs + Off where Ms denotes a measurement result of the beam of the serving cell, Mc denotes a measurement result of the beam of the candidate cell, Hys denotes a hysteresis parameter for the Event LTM3, Ofc denotes a beam specific offset of the beam of the candidate cell, and Ofs denotes a beam specific offset of the beam of the serving cell. -Event LTM4: a beam of a candidate cell becomes better than an absolute threshold. · Entering condition: Mc + Ofc –Hys > Thresh · Leaving condition: Mc + Ofc + Hys < Thresh where Mc denotes a measurement result of the beam of the candidate cell, Hys denotes a hysteresis parameter for the Event LTM4, Thresh denotes a threshold parameter for the Event LTM4, and Ofc denotes a beam specific offset of the beam of the candidate cell. -Event LTM5: a beam of a serving cell becomes worse than threshold 1 (denoted as Thresh1 herein) , and a beam of a candidate cell becomes better than another absolute threshold 2 (denoted as Thresh2 herein) . · Entering condition: Ms + Hys < Thresh1, and Mc + Ofc–Hys > Thresh2 · Leaving condition: Ms –Hys > Thresh1, and Mc + Ofc + Hys < Thresh2 where Ms denotes a measurement result of the beam of the serving cell, Mc denotes a measurement result of the beam of the candidate cell, Hys denotes a hysteresis parameter for the Event LTM5, Thresh1 and Thresh2 denote threshold parameters for the Event LTM5, and Ofc denotes a beam specific offset of the beam of the candidate cell.
[0056] In the above Event LTM2, LTM3, LTM4, or LTM5, the beam of the serving cell is current beam (i.e. a beam corresponding to / associated with an indicated transmission configuration indication (TCI) state) . The beam of the candidate cell may be any beam in the L1 measurement resource configuration in the LTM configuration associated with the candidate cell.
[0057] In some embodiments, a RS type of a beam / L1 measurement resource may be a SSB or CSI-RS. In some embodiments, a same RS type, which is configured by the network device 120, may be used for beams of both a serving cell and a neighboring cell for Event LTM3 and Event LTM5 condition evaluation. In some embodiments, one or more of a type of an event, an offset value, a threshold value, a hysteresis value, a beam specific offset value or a RS type may be included in the event configuration.
[0058] Continuing to refer to FIG. 2, at step 220, the terminal device 110 may evaluate a condition to trigger the L1 measurement reporting. In some embodiments, after configured with event triggered L1 measurement reporting, a lower layer (e.g., a physical layer) of the terminal device 110 may provide L1 measurement results of a beam of a serving cell and beams of candidate cells to a higher layer (e.g., a MAC layer) of the terminal device 110. L1 measurement result of a beam may also be referred to as quantity of the beam, and may be L1-reference signal received power (RSRP) , L1-reference signal received quality (RSRQ) or L1-signal to interference plus noise ratio (SINR) value. The higher layer of the terminal device 110 may perform evaluation of condition (refer to as condition to trigger L1 measurement reporting) for one configuration of event triggered L1 measurement reporting, based on the L1 measurement result provided by the lower layer.
[0059] In some embodiments, the condition to trigger the L1 measurement reporting may comprise MR Condition 1: for one or more applicable beams, a condition of one event is fulfilled for a configured period of time (e.g., time to trigger (TTT) ) . In some embodiments, the condition of the event may be an entering condition or a leaving condition of the event. In some embodiments, the condition of the event may be not fulfilled for an applicable beam before the configured period of time (e.g., TTT) , i.e., the entering / leaving condition of the applicable beam may change from not fulfilled to fulfilled, and keep being fulfilled during the configured period of time. In some embodiments, for the Event LTM2, an applicable beam may be a beam of a serving cell. In some embodiments, for Event LTM2, LTM3 or LTM5, an applicable beam may be a beam of a candidate cell. In some embodiments, for the case that the condition of the event is the entering condition, an applicable beam may be a beam of which the entering condition is not fulfilled before. In some embodiments, for the case that the MR Condition 1 is the leaving condition, an applicable beam may be a beam which fulfilled the entering condition before. For example, the applicable beam may be a beam which fulfilled the entering condition for TTT (MR Condition 1) before.
[0060] In some embodiments, the condition to trigger the L1 measurement reporting may comprise MR Condition 2: a periodic reporting timer associated with one event / configuration of event triggered L1 measurement reporting expires. In some embodiments, upon release or modification of the configuration for event triggered L1 measurement reporting, the terminal device 110 may stop the periodic reporting timer associated with the event / configuration. In some embodiments, if there is no beam fulfills the entering condition of the event, the terminal device 110 may stop the periodic reporting timer associated with the event / configuration.
[0061] In some embodiments, the condition to trigger the L1 measurement reporting may comprise MR Condition 3: a signaling indicating an activation of one cell (e.g., SCell) is received, and the cell is associated with the configuration of event triggered L1 measurement reporting. In some embodiments, the configuration may also be associated with an event which indicates that the terminal device 110 shall trigger the L1 measurement reporting upon reception of the signaling. In some embodiments, the signaling may be a MAC CE or RRC signaling.
[0062] It is to be noted that the condition to trigger the L1 measurement reporting may comprise any combinations of the above conditions (MR Condition 1, 2 or 3) , and the present disclosure does not limit this aspect.
[0063] With reference to FIG. 2, at step 230, if the condition to trigger the L1 measurement reporting is satisfied for one configuration of event triggered L1 measurement reporting, the terminal device 110 may trigger a MR. In some embodiments, when the MR is triggered, the MR may be considered as pending until the MR is cancelled.
[0064] In some embodiments, if one MR is triggered or the condition to trigger L1 measurement reporting is fulfilled, for one configuration of event triggered L1 measurement reporting, the terminal device 110 may transmit, to the network device 120, a measurement information, which is associated with the triggered MR or the configuration of event triggered L1 measurement reporting.
[0065] In some embodiments, the measurement information may comprise information of the configuration of event triggered L1 measurement reporting, e.g., the identity associated with the configured event triggered L1 measurement reporting, in other words, the identity which indicates the configuration of event triggered L1 measurement reporting is included in the measurement information.
[0066] In some embodiments, the measurement information may comprise identity information and quantity of one or more beams. In some embodiments, the measurement information may comprise identity information and quantity for up to N beams, and N is configured in the configuration for event triggered L1 measurement reporting. In some embodiments, identity information of one beam may comprise a synchronization signal (SS) / physical broadcast channel (PBCH) block resource indicator (SSBRI) , a CSI-RS resource indicator (CRI) , or an identity of a SSB or CSI-RS. In some embodiments, quantity of the beam may comprise the value of latest L1-RSRP, L1-RSRQ or SINR of the beam provided by the lower layer (e.g., physical layer) .
[0067] In some embodiments, the one or more beams may comprise a beam of a serving cell and a set of beams of a candidate cell. In some embodiments, the network device 120 may also configure the terminal device 110 whether to report the identity information and quantity of the beam of the serving cell, in the configuration of event triggered measurement reporting. In some embodiments, the number of beams in the set of beams of the candidate cell may be N-1 or N in the measurement information.
[0068] In some embodiments, the one or more beams may be one or more beams which fulfills the MR Condition 1, the entering condition or leaving condition of the event. In some embodiments, the one or more beams may be one or more beams which does not fulfil the MR Condition 1, the entering condition or leaving condition of the event. In some embodiments, the network device 120 may configure the terminal device 110 whether to report the one or more beams which does not fulfil the MR Condition 1, the entering condition or leaving condition of the event, in the configuration of event triggered measurement reporting.
[0069] In some embodiments, the terminal device 110 may include the identity information and quantity of the one or more beams in the measurement information based on the quantity of the one or more beams. For example, the terminal device 110 may include the identity information and quantity of the one or more beams in the measurement information in a decreasing order of quantity. In another example, the terminal device 110 may include one or more beams with the best quantity in the measurement information.
[0070] In some embodiments, the measurement information may comprise number of the one or more beams of which the identity information and quantity is included in the measurement information.
[0071] It is to be noted that the measurement information may comprise any combinations of the above information, and the present disclosure does not limit this aspect.
[0072] In some embodiments, the terminal device 110 may send the measurement information in a MR MAC CE. In other words, the terminal device 110 may transmit the measurement information by transmitting the MR MAC CE including the measurement information. In some embodiments, the terminal device 110 may report or transmit the MR MAC CE by indicating, to a multiplexing and assembly entity, the MR MAC CE in a subsequent uplink transmission, and by transmitting one or more MAC protocol data units (PDUs) which includes the MR MAC CE. If an uplink (UL) grant is not available, or the UL grant cannot accommodate the MR MAC CE, the terminal device 110 may trigger a scheduling request (SR) in order to send the MR MAC CE.
[0073] In some embodiments, if the condition to trigger the L1 measurement reporting is satisfied / fulfilled, or if the measurement information / MR MAC CE is sent, the terminal device 110 may start or restart a periodic reporting timer, and increment a counter (e.g., increase the counter by 1) , for the associated configuration of event triggered L1 measurement reporting, if the counter is less than or equal to a threshold value. In other words, if the MR is triggered or to be triggered, or if the MR MAC CE is sent, the terminal device 110 may start or restart the periodic reporting timer, and increment the counter (e.g., increase the counter by 1) for the associated MR. In some embodiments, the threshold value may be configured in the configuration of event triggered measurement reporting.
[0074] In some embodiments, if a set of MRs are triggered, or the condition to trigger L1 measurement reporting is fulfilled for one or multiple configurations of event triggered L1 measurement reporting (i.e., one or multiple configured event triggered L1 measurement reporting) , the terminal device 110 may transmit a set of MR MAC CEs (also referred to as a set of first MAC CEs herein) including a set of measurement information associated with the one or multiple configurations of event triggered L1 measurement reporting or the one or more MRs (also referred to as first measurement information herein) . The one or multiple configurations may be a part (i.e., a subset) of the set of configurations of event triggered L1 measurement reporting. In some embodiments, the terminal device 110 may report or transmit the set of first MAC CEs by indicating, to a multiplexing and assembly entity, the set of first MAC CEs in a subsequent uplink transmission, and by transmitting one or multiple MAC PDUs which includes the set of first MAC CEs.
[0075] With reference to FIG. 2, at step 231, if a UL grant is able to (or is sufficient to) accommodate the set of first MAC CEs plus a subheader of each of the set of first MAC CEs, the terminal device 110 may transmit the set of first MAC CEs via the UL grant.
[0076] In some embodiments, the UL grant may be one or more uplink shared channel (UL-SCH) resources available for a new transmission. In some embodiments, if bits of the UL grant are equal to or larger than a size of the set of first MAC CEs plus the subheader of each of the set of first MAC CEs, the terminal device 110 may determine that the UL grant is able to accommodate the set of first MAC CEs plus the subheader of each of the set of first MAC CEs. In some embodiments, if the UL grant is able to accommodate the set of first MAC CEs plus the subheader of each of the set of first MAC CEs as a result of logical channel prioritization, it means that the UL grant can accommodate the set of first MAC CEs plus the subheader of each of the set of first MAC CEs.
[0077] With reference to FIG. 2, at step 232, if the UL grant is unable to (or is insufficient to) accommodate the set of first MAC CEs plus the subheader of each of the set of first MAC CEs, the terminal device 110 may transmit, to the network device 120 via the UL grant, a further set of MR MAC CEs (also referred to as a set of second MAC CEs herein) comprising further measurement information (also referred to as second measurement information herein) . In some embodiments, the second measurement information may be a part of the first measurement information.
[0078] In some embodiments, if bits of the UL grant are smaller than the size of the set of first MAC CEs plus the subheader of each of the set of first MAC CEs, the terminal device 110 may determine that the UL grant is unable to accommodate the set of first MAC CEs plus the subheader of each of the set of first MAC CEs. In some embodiments, if the UL grant is unable to accommodate the set of first MAC CEs plus the subheader of each of the set of first MAC CEs as a result of logical channel prioritization, it means that the UL grant cannot accommodate the set of first MAC CEs plus the subheader of each of the set of first MAC CEs. In some embodiments, if the UL grant can accommodate the set of second MAC CEs, the terminal device 110 may transmit the set of second MAC CEs. In some embodiments, if bits of the UL grant are equal to or larger than a size of the set of second MAC CEs plus the subheader of each of the set of second MAC CEs, the terminal device 110 may determine that the UL grant is able to accommodate the set of second MAC CEs plus the subheader of each of the set of second MAC CEs. In some embodiments, if the UL grant is able to accommodate the set of second MAC CEs plus the subheader of each of the set of second MAC CEs as a result of logical channel prioritization, it means that the UL grant can accommodate the set of second MAC CEs plus the subheader of the set of second MAC CEs.
[0079] Continuing to refer to FIG. 2, at step 240, if the UL grant is not available, or the UL grant cannot accommodate the set of first MAC CEs plus the subheader of each of the set of first MAC CEs, the terminal device 110 may trigger one or multiple SRs. In some embodiments, if the UL grant cannot accommodate the set of first MAC CEs plus the subheader of each of the set of first MAC CEs, but can accommodate the set of second MAC CEs plus the subheader of each of the set of second MAC CEs, the terminal device 110 may not trigger the one or multiple SRs. In some embodiments, if the UL grant cannot accommodate the set of first MAC CEs plus the subheader of each of the set of first MAC CEs, and the UL grant can accommodate the set of second MAC CEs plus the subheader of each of the set of second MAC CEs, the terminal device may trigger the one or multiple SRs.
[0080] In some embodiments, the network device 120 may transmit, to the terminal device 110, a set of configurations for a SR (also referred to as SR configurations herein) associated with the set of configurations for the L1 measurement reporting. The terminal device 110 may trigger the SR based the set of SR configurations.
[0081] In some embodiments, the set of configurations of event triggered L1 measurement reporting may be associated with one RS configuration, i.e., only one SR configuration is configured for event triggered L1 measurement reporting. If the UL grant cannot accommodate the set of first MAC CEs plus the subheader of each of the first MAC CE, the terminal device 110 may trigger the one SR for the one or multiple configurations / MRs.
[0082] In some embodiments, each of the set of configurations of event triggered L1 measurement reporting may be associated with one of the set of SR configurations, i.e., multiple SR configurations are configured for event triggered L1 measurement reporting. For example, the network device 120 may configure a mapping / association between one configuration of event triggered L1 measurement reporting and one SR configuration, for example the network device 110 may configure a mapping / association between an identity of one configuration of event triggered L1 measurement reporting and an identity of one SR configuration. The terminal device 110 may trigger one or multiple SRs which correspond to the one or multiple configurations / MRs, if the UL grant cannot accommodate the set of first MR MAC CEs plus the subheader of each of the set of first MR MAC CEs. The terminal device 110 triggers one or multiple SRs which correspond to the one or multiple configurations / MRs, if the UL grant cannot accommodate the set of first MR MAC CEs plus the subheader of each of the set of first MR MAC CEs, and the UL grant cannot accommodate the set of second MR MAC CEs plus the subheader of each of the set of second MR MAC CEs, the terminal device 110 may trigger one SR associated with one configuration of event triggered L1 measurement reporting based on the SR configuration associated with the configuration of event triggered L1 measurement reporting. In some embodiments, if the first MAC CE is sent or if the MRs associated with the one or multiple SRs are canceled, the terminal device 110 may cancel the one or multiple SRs.
[0083] In some embodiments, if a triggered MR associated with a SR is cancelled, or the first measurement information or the set of first MAC CEs is sent, the terminal device 110 may cancel the SR. Cancelling one SR may also include stopping a timer for a SR transmission on a physical uplink control channel (PUCCH) .
[0084] In some embodiments, the set of second MAC CEs and / or the second measurement information may be determined based on at least one of the following: quantity of beams, a size of the UL grant, a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, or a priority of each of the one or multiple configurations of event triggered L1 measurement reporting. For illustration, some example embodiments will be described in connection with Embodiments 1 to 3 below. Embodiment 1
[0085] In some embodiments, the condition to trigger L1 measurement reporting may be fulfilled for one configured event triggered L1 measurement reporting, and a terminal device may trigger one MR. If a UL grant can accommodate the first MAC CE containing the first measurement information associated with the MR (or the configured event triggered L1 measurement reporting) plus the subheader of the first MAC CE, the terminal device may report the first MAC CE to the network. However, it is unclear how to handle the case when the UL grant cannot accommodate the first MAC CE plus its subheader.
[0086] In view of this, embodiments of the present disclosure provide a solution of a beam level truncation. In the solution, if the UL grant is not sufficient to accommodate a first MAC CE containing the first measurement information plus the subheader of the first MAC CE, the UE reports a second MAC CE containing the second measurement information associated with the configuration / triggered MR based on the quantity of the beams. In this case, the set of first MAC CEs comprises a first MAC CE, the set of second MAC CEs comprises a second MAC CE, and the one or multiple configurations comprises one configuration for the L1 measurement reporting.
[0087] In some embodiments, the second measurement information may comprise information of the configuration of event triggered L1 measurement reporting, and identity information and quantity of one or more beams with highest quantity. In some embodiments, the second measurement information may comprise number of the one or more beams.
[0088] In some embodiments, the second measurement information may comprise identity information and quantity of one beam with highest quantity.
[0089] In some embodiments, the second measurement information may comprise identity information and quantity of multiple beams with highest quantity. For example, the second measurement information may comprise identity information and quantity for beams in order of quantity. For example, the second measurement information may comprise the identity information and the quantity of beams in a decreasing order of quantity values. In other words, the identity information and quantity of beams with highest quantity value is included in the second measurement information.
[0090] In some embodiments, the first measurement information may comprise identity information and quantity for more beams than the second measurement information. For example, the first measurement information includes identity information and quantity of N beams, and the second measurement information includes identity information and quantity of less than N beams.
[0091] In some embodiments, the terminal device 110 may report the second measurement information in the second MAC CE including identity information and quantity for as many beams as possible, taking the number of bits in the UL grant into consideration. In some embodiments, the second measurement information may include the information of the configuration of event triggered L1 measurement reporting, and may not include the identity information and quantity of beam. For example, if the event associated with the configuration of event triggered L1 measurement reporting is Event LTM2, the terminal device 110 may only include the information of the associated configured event triggered L1 measurement reporting in the second MAC CE / second measurement information.
[0092] In some embodiments, the second measurement information may include the information of the associated configured event triggered L1 measurement reporting, and the identity information of the beam, but not include the quantity of the beam.
[0093] In this way, a beam level truncation may be supported for an event triggered L1 measurement reporting. Embodiment 2
[0094] In some embodiments, the condition to trigger L1 measurement reporting may be fulfilled for multiple configurations of event triggered L1 measurement reporting, and a terminal device may trigger a set of MRs.
[0095] In some embodiments, the terminal device 110 may trigger one MR. For example, if the conditions to trigger MR for a first configuration and a second configuration of event triggered L1 measurement reporting are fulfilled, the terminal device 110 may trigger one MR for the first and second configurations. In some embodiments, if a priority of the first configuration and a priority of the second configuration are the same, the terminal device may trigger one MR.
[0096] In some embodiments, the terminal device 110 may trigger multiple MRs. For example, if the condition to trigger MR is fulfilled for a first configuration of event triggered L1 measurement reporting, a MAC layer of the terminal device 110 may trigger a first MR for the first configuration. If the condition to trigger MR is fulfilled for a second configuration of event triggered L1 measurement reporting, the MAC layer of the terminal device 110 may trigger a second MR for the second configuration.
[0097] In some embodiments, the terminal device 110 may report, to the network device 120, at least one first MAC CE containing measurement information associated with the multiple configurations of event triggered measurement reporting (or the set of MRs) , if the UL grant can accommodate the at least one first MAC CE plus the subheader of the at least one first MAC CE.
[0098] In some embodiments, the at least one first MAC CE may be one first MAC CE. In some embodiments, the at least one first MAC CE may be multiple first MAC CEs, and each of the multiple first MAC CEs may correspond to one of the multiple configurations of event triggered L1 measurement reporting. In some embodiments, if the at least one first MAC CE is transmitted or to be transmitted, the terminal device 110 may start or restart the periodic reporting timer, increase the associated counter by 1 for each of the multiple configurations of event triggered L1 measurement reporting (or each of the set of MRs) , and cancel the set of triggered MRs.
[0099] However, it is unclear how to handle the case when the UL grant cannot accommodate the at least one first MAC CE plus the subheader of the at least one first MAC CE.
[0100] In view of this, embodiments of the present disclosure provide a solution of a MR level truncation. In the solution, if the UL grant cannot accommodate the at least one first MAC CE plus the subheader of the at least one first MAC CE, the terminal device 110 may transmit at least one second MAC CE containing second measurement information associated with a subset of the multiple configurations of event triggered measurement reporting. In this case, the set of first MAC CEs comprises the at least one first MAC CE, the set of second MAC CEs comprises at least one second MAC CE, and the one or multiple configurations comprises multiple configurations for the L1 measurement reporting.
[0101] In some embodiments, the at least one second MAC CE may contain as many measurement information as possible. In other words, the terminal device 110 may report the at least one second MAC CE by taking the number of bits in the UL grant into consideration.
[0102] In some embodiments, the at least one second MAC CE may contain measurement information based on a timing of fulfillment of the condition to trigger MR of the multiple configurations. In some embodiments, the at least one second MAC CE may contain measurement information based on the priorities of the multiple configurations. In some embodiments, the priority for each of the set of configurations may be configured by the network device 120, e.g., in each of the set of configurations of event triggered L1 measurement reporting.
[0103] In some embodiments, if the UL grant cannot accommodate the at least one first MAC CE plus the subheader of the at least one first MAC CE, the terminal device 110 may trigger at least one SR. In some embodiments, if the UL grant cannot accommodate the at least one first MAC CE plus the subheader of the at least one first MAC CE, and the UL grant cannot accommodate the at least one second MAC CE plus the subheader of the at least one second MAC CE, the terminal device 110 may trigger at least one SR. In some embodiments, if the UL grant cannot accommodate the at least one first MAC CE plus the subheader of the at least one first MAC CE, and the UL grant can accommodate the at least one second MAC CE plus the subheader of the at least one second MAC CE, the terminal device 110 may trigger at least one SR. In some embodiments, the at least one SR may be one SR. In some embodiments, the at least one SR may be multiple SRs, and each of the multiple SRs is associated with one of the multiple configurations / MRs of which the measurement information is not reported to the network, by the at least one first MAC CE or the at least one second MAC CE. In some embodiments, if the at least one first MAC CE or at least one second MAC CE is sent, or if one or multiple MRs associated with the one or multiple SRs are canceled, the terminal device 110 may cancel the one or multiple SRs.
[0104] According to some embodiments of the present disclosure, the at least one second MAC CE may be determined by truncation or segmentation. In the context of the present disclosure, the term ‘second MAC CE’ may also be referred to as ‘truncated MAC CE’ or ‘segmented MAC CE’ .
[0105] In some embodiments, the set of first MAC CEs may comprise a first MAC CE, the set of second MAC CEs may comprise a second MAC CE, and the set of configurations for L1 measurement reporting may comprise multiple configurations of event triggered L1 measurement reporting. If the terminal device 110 determines that a UL grant cannot accommodate the first MAC CE containing the first measurement information associated with the multiple configurations of event triggered L1 measurement reporting, the terminal device 110 may transmit the second MAC CE containing second measurement information associated with a subset of the multiple configurations of event triggered L1 measurement reporting. In other words, the terminal device 110 may report the second MAC CE containing second measurement information associated with a subset of the triggered MRs.
[0106] In some embodiments, the second measurement information may comprise measurement information for as many configurations of event triggered L1 measurement reporting as possible. In other words, the terminal device 110 may report the second MAC CE by taking the number of bits in the UL grant into consideration.
[0107] In some embodiments, the second measurement information may comprise measurement information for the subset of configurations in an order of the timing of fulfillment of the condition to trigger the L1 measurement reporting for each of the multiple configurations. For example, the UL grant can only include a MR MAC CE including one measurement information plus its subheader. If the condition to trigger MR for the first configuration is satisfied earlier than the condition to trigger MR for the second configuration, the terminal device 110 may include the measurement information associated with the first configuration in the second measurement information / second MAC CE. In other words, if the first MR is triggered earlier than the second MR, the terminal device 110 may include the measurement information associated with the first MR in the second measurement information / second MAC CE, and does not include the measurement information associated with the second MR in the second measurement information / second MAC CE.
[0108] In some embodiments, the second measurement information may comprise measurement information for the subset of configurations in an order of the priority of each of the multiple configurations. That is, the terminal device 110 may report the second MAC CE containing a measurement result for the subset of the multiple configurations based on the priorities of the multiple configurations. For example, the UL grant can only include a MR MAC CE including one measurement information plus its subheader. If the priority of the first configuration is higher than the priority of the second configuration, the terminal device 110 may include the measurement information associated with the first configuration in the second measurement information / second MAC CE. In other words, if the priority of the first MR is higher than the priority of the second MR, the terminal device 110 may include the measurement information associated with the first MR in the second measurement information / second MAC CE, and does not include the measurement information associated with the second MR in the second measurement information / second MAC CE.
[0109] It is to be noted that the second measurement information may comprise any combinations of the above information, and the present disclosure does not limit this aspect.
[0110] In some embodiments, the first MAC CE and the second MAC CE may comprise information indicating the number of MRs / configurations of which the measurement information is included in the first MAC CE or second MAC CE. In some embodiments, the first MAC CE and the second MAC CE may comprise information of number of configurations associated with the associated measurement information. In other words, the first or second MAC CE may comprise the information which indicates that the number of measurement information in the first measurement information or second measurement information. In some embodiments, the first MAC CE and the second MAC CE may comprise information indicating whether the identity information and quantity for one beam is the last one or the first one of in the associated measurement information. In some embodiments, the first MAC CE and the second MAC CE may comprise information indicating the start or end of one measurement information, or indicating next measurement information.
[0111] In some embodiments, the terminal device 110 may transmit to the network device 120 information of a size of third measurement information associated with the multiple configurations that is not comprised in the second MAC CE. In other words, the terminal device 110 may also transmit, to the network device 120, size information required for a further reporting of measurement information. In some embodiments, the terminal device 110 may transmit the size information in the second MAC CE. In some embodiments, the size information may comprise a bit or byte size. In some embodiments, the size information may comprise the size of measurement information associated with the triggered MRs and not canceled which is not included in the second MAC CE. In some embodiments, the size information may comprise the number of the measurement information to be reported, or the number of MRs of which the measurement information is not reported.
[0112] In some embodiments, if the second MAC CE is transmitted from the terminal device 110 to the network device 120, the terminal device 110 may cancel one or more triggered MRs associated with the subset of configurations. For example, if the terminal device 110 reports the second MAC CE, which contains the measurement information of the first configuration, the terminal device 110 may cancel the first MR associated with the first configuration.
[0113] In some embodiments, if the second MAC CE is transmitted from the terminal device 110 to the network device 120, the terminal device 110 may start or restart a periodic reporting timer for each of the subset of configurations, and increment a counter for each of the subset of configurations (e.g., increase the counter by 1) . For example, if the terminal device 110 reports the second MAC CE, which contains the measurement information of the first configuration, the terminal device 110 may start or restart the periodic reporting timer associated with the first configuration, and increases the counter of number of measurement reporting by 1 for the event triggered L1 measurement reporting associated with the first configuration.
[0114] In some embodiments, if the UL grant cannot accommodate the first MAC CE plus the subheader of the at least one first MAC CE, the terminal device 110 may trigger at least one SR. In some embodiments, if the UL grant cannot accommodate the first MAC CE plus the subheader of the first MAC CE, and the UL grant cannot accommodate the at least one second MAC CE plus the subheader of the second MAC CE, the terminal device 110 may trigger at least one SR. In some embodiments, if the UL grant cannot accommodate the first MAC CE plus the subheader of the first MAC CE, and the UL grant can accommodate the second MAC CE plus the subheader of the second MAC CE, the terminal device 110 may trigger at least one SR. In some embodiments, the at least one SR may be one SR. In some embodiments, the at least one SR may be multiple SRs, and each of the multiple SRs is associated with one of the multiple configurations / MRs of which the measurement information is not reported to the network, by the first MAC CE or the second MAC CE. In some embodiments, if the first MAC CE or the second MAC CE is sent, or if one or more MRs associated with the at least one SR are canceled, the terminal device 110 may cancel the at least one SR.
[0115] In some embodiments, different logic channel identity (LCID) or extended LCID (eLCID) values are defined and used by the terminal device 110 to generate the subheaders of the first MAC CE and second MAC CE.
[0116] In this way, a truncated MAC CE may be supported for event triggered L1 measurement reporting, and a MR level truncation may be carried out.
[0117] In some embodiments, the set of first MAC CEs may comprise a first MAC CE, the set of second MAC CEs may comprise multiple second MAC CEs, and the one or multiple configurations for L1 measurement reporting may comprise multiple configurations of event triggered L1 measurement reporting. The terminal device 110 may segment the second measurement information or the first MAC CE into multiple segments based on the size of the UL grant, and transmit the multiple second MAC CEs comprising the multiple segments.
[0118] For example, if the terminal device 110 determines that a UL grant cannot accommodate the first MAC CE containing the first measurement information associated with the multiple configurations of event triggered L1 measurement reporting, the MAC layer of the terminal device 110 may segment the first measurement information or segment the first MAC CE based on the size of the UL grant, and transmit the segmented first measurement information or segmented first MAC CE in two or more second MAC CEs.
[0119] In some embodiments, a second MAC CE in the multiple second MAC CEs may comprise information indicating whether the second MAC CE is segmented. In some embodiments, the first MAC CE or the second MAC CE may include a field indicating whether it contains the complete measurement information, or whether it is a truncated / segmented MAC CE.
[0120] In some embodiments, a second MAC CE in the multiple second MAC CEs may comprise information indicating whether the second MAC CE comprises a first segment, a last segment, or neither the first nor last segment in the multiple segments. In some embodiments, the second MAC CE may comprise information of a size of third measurement information associated with the multiple configurations that is not comprised in the second MAC CE. In other words, the terminal device 110 may also transmit, to the network device 120, size information required for a further reporting of measurement information. In some embodiments, the terminal device 110 may transmit the size information in the second MAC CE. In some embodiments, the size information may comprise a bit or byte size. In some embodiments, the size information may comprise the size of measurement information associated with the triggered MRs and not canceled which is not included in the second MAC CE. In some embodiments, the size information may comprise the number of the measurement information to be reported, or the number of MRs of which the measurement information is not reported.
[0121] In some embodiments, the MAC layer of the terminal device 110 may prioritize the transmission of the second MAC CEs. In some embodiments, if the multiple segments are transmitted, i.e., all the segments of the first measurement information or segments of the first MAC CE are transmitted in the two or more second MAC CEs, the terminal device 110 may cancel the set of triggered MRs associated with the multiple configurations. Alternatively or additionally, the terminal device 110 may start or restart a periodic reporting timer for each of the multiple configurations, and increment a counter for each of the subset of configurations (e.g., increase the counter by 1 for each of the multiple configurations of event triggered L1 measurement reporting) .
[0122] In some embodiments, if the UL grant cannot accommodate the first MAC CE plus the subheader of the first MAC CE, and the UL grant cannot accommodate any / even one of the multiple second MAC CEs plus the subheader of the one second MAC CE, the terminal device 110 may trigger at least one SR. In some embodiments, if the UL grant cannot accommodate the first MAC CE plus the subheader of the first MAC CE, and the UL grant can accommodate the second MAC CE plus the subheader of the second MAC CE, the terminal device 110 may trigger at least one SR. In some embodiments, the at least one SR may be one SR. In some embodiments, the at least one SR may be multiple SRs, and each of the multiple SRs is associated with one of the multiple configurations / MRs. In some embodiments, if the second MAC CE is sent, or if one or more MRs associated with the at least one SR are canceled, the terminal device 110 may cancel the at least one SR.
[0123] In some embodiments, different LCID or eLCID values are defined and used by the terminal device 110 to generate the subheaders of the first MAC CE and the multiple second MAC CEs.
[0124] In this way, a MAC CE segmentation may be supported for event triggered L1 measurement reporting, and a MR level truncation may be carried out. Embodiment 3
[0125] Embodiments of the present disclosure also provide a solution of a MAC CE level truncation. In the solution, the set of first MAC CEs comprises multiple first MAC CEs, the set of second MAC CEs comprises one or more second MAC CEs, and the one or multiple configurations comprises the multiple configurations for the L1 measurement reporting. Each of the multiple first MAC CEs corresponds to each of the multiple configurations. If the UL grant is not sufficient to accommodate the multiple first MAC CEs containing the first measurement information plus the subheaders of the multiple first MAC CEs, the terminal device 110 may report a subset of the multiple first MAC CEs associated with a subset of the multiple configurations.
[0126] In some embodiments, the terminal device 110 may transmit the subset of multiple first MAC CEs comprising as many first MAC CEs in the multiple first MAC CEs as possible. That is, the terminal device 110 may report as many first MAC CEs as possible. In other words, the terminal device 110 may report as many first MAC CEs as possible by taking the number of bits in the UL grant into consideration.
[0127] In some embodiments, the terminal device 110 may transmit the subset of the multiple first MAC CEs in an order of the timing of fulfillment of the condition. That is, the terminal device 110 may report the subset of the multiple first MAC CEs based on timing of the fulfillment of condition to trigger MR of the multiple configurations. For example, the UL grant can only include one MAC CE plus its subheader. If the condition to trigger MR for the first configuration is satisfied earlier than the condition to trigger MR for the second configuration, the terminal device 110 may report a first MAC CE including the measurement information associated with the first configuration. In other words, if the first MR is triggered earlier than the second MR, the terminal device 110 may report a MR MAC CE including the measurement information associated with the first MR, and does not report the MR MAC CE including the measurement information associated with the second MR.
[0128] In some embodiments, the terminal device 110 may transmit the subset of the multiple first MAC CEs in an order of the priority. That is, the terminal device 110 may report the subset of the multiple first MAC CEs based on the priorities of the multiple configurations. For example, the UL grant can only include one MAC CE plus its subheader. If the priority of the first configuration is higher than the priority of the second configuration, the terminal device 110 may report a first MAC CE including the measurement information associated with the first configuration. In other words, if the priority of the first MR is higher than the priority of the second MR, the terminal device 110 may report a MR MAC CE including the measurement information associated with the first MR / configuration, and does not report the MR MAC CE including the measurement information associated with the second MR / configuration.
[0129] In some embodiments, if the subset of the multiple first MAC CEs is transmitted from the terminal device 110 to the network device 120, the terminal device 110 may start or restart a periodic reporting timer for each of the subset of configurations, and increment a counter for each of the subset of configurations (e.g., increase the counter by 1) . For example, if the terminal device 110 reports the first MAC CE, which contains the measurement information of the first configuration, the terminal device 110 may start or restart the periodic reporting timer associated with the first configuration, and increase the counter of number of measurement reporting by 1 for the event triggered L1 measurement reporting associated with the first configuration.
[0130] In some embodiments, if the UL grant cannot accommodate one first MAC CE plus a subheader of the first MAC CE, the terminal device 110 triggers at least one SR. In other words, if the UL grant cannot accommodate even one first MAC CE which containing measurement information for one of the multiple configurations of event triggered L1 measurement reporting, the terminal device 110 may trigger at least one SR. In some embodiments, if the UL grant cannot accommodate the multiples first MAC CEs plus the subheader of each of the multiple first MAC CEs, and the UL grant can accommodate one first MAC CE plus the subheader of the one first MAC CE, the terminal device 110 may trigger at least one SR. In some embodiments, the at least one SR may be one SR. In some embodiments, the at least one SR may be multiple SRs, and each of the multiple SRs is associated with one of the multiple configurations / MRs of which the measurement information is not reported to the network, by the multiple first MAC CEs or the subset of multiple first MAC CE. In some embodiments, if one or multiple first MAC CEs are sent, or if one or more MRs associated with the at least one SR are canceled, the terminal device 110 may cancel the at least one SR.
[0131] In this way, a MAC CE level truncation may be supported for event triggered L1 measurement reporting.
[0132] To transmit a MR MAC CE, the terminal device 110 needs to perform resource allocation for the MR MAC CE. When the terminal device 110 performs resource allocation for a MAC CE (also referred to as a MR MAC CE herein) used for event triggered L1 measurement reporting, a priority of the MR MAC CE may be needed.
[0133] In view of this, embodiments of the present disclosure also provide a solution of resource allocation for event triggered L1 measurement reporting. In the solution, a priority of a MR MAC CE is the same as a priority of a MAC CE for beam failure recovery (BFR) , or a MAC CE for configured grant confirmation, or a MAC CE for multiple entry configured grant confirmation. In some embodiments, the MR MAC CE may be a first MAC CE in the set of first MAC CEs or a second MAC CE in the set of second MAC CEs.
[0134] In some embodiments, the terminal device 110 may allocate a resource for a MR MAC CE using a priority level for the MR MAC CE as at least one of the following: -the same as the priority of the MAC CE for (enhanced) BFR, or MAC CE for configured grant confirmation or MAC CE for multiple entry configured grant confirmation; -higher than the priority of the MAC CE for (enhanced) BFR, or MAC CE for configured grant confirmation, or MAC CE for multiple entry configured grant confirmation, and lower than the MAC CE for a cell-radio network temporary identity (C-RNTI) , or data from an uplink common control channel (UL-CCCH) ; -lower than the priority of the MAC CE for (enhanced) BFR, or MAC CE for configured grant confirmation, or MAC CE for multiple entry configured grant confirmation, and below MAC CE for C-RNTI, or data from UL-CCCH, but higher than the priority of MAC CE for (extended) BSR, with exception of BSR included for padding; or -higher than the data from any logical channel, except data from a UL-CCCH, but lower than the priority of MAC CE for IAB-mobile termination (IAB-MT) recommended beam indication, or MAC CE for desired IAB-MT power spectral density (PSD) range, or MAC CE for desired downlink (DL) transmission (Tx) power adjustment.
[0135] So far, solutions for event triggered L1 measurement reporting are described in connection with the process 200. It is to be understood that operations or steps described in connection with the process 200 may be performed separately or in any suitable combinations.EXAMPLE IMPLEMENTATION OF METHODS
[0136] Accordingly, embodiments of the present disclosure provide methods of communication implemented at a terminal device and at a network device. These methods will be described below with reference to FIGs. 3 and 4.
[0137] FIG. 3 illustrates a flowchart of an example method 300 of communication implemented at a terminal device in accordance with some embodiments of the present disclosure. For example, the method 300 may be performed at the terminal device 110 as shown in FIG. 1. For the purpose of discussion, in the following, the method 300 will be described with reference to FIG. 1. It is to be understood that the method 300 may include additional blocks not shown and / or may omit some blocks as shown, and the scope of the present disclosure is not limited in this regard.
[0138] At block 310, the terminal device 110 may determine that an uplink grant is insufficient to accommodate a set of first MAC CEs comprising first measurement information associated with a set of configurations for a L1 measurement reporting plus a subheader of each of the set of first MAC CEs.
[0139] At block 320, the terminal device 110 may transmit, to the network device 120 via the uplink grant, a set of second MAC CEs comprising second measurement information based on at least one of the following: quantity of beams, a size of the uplink grant, a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, or a priority of each of the set of configurations.
[0140] In some embodiments, the set of first MAC CEs may comprise a first MAC CE, the set of second MAC CEs may comprise a second MAC CE, and the set of configurations may comprise one configuration for the L1 measurement reporting. In some embodiments, the second measurement information may comprise measurement information of one or more beams with the highest quantity. In some embodiments, the second measurement information may further comprise number of the one or more beams.
[0141] In some embodiments, the second measurement information may be associated with a subset of configurations in the set of configurations.
[0142] In some embodiments, the set of first MAC CEs may comprise a first MAC CE and the set of second MAC CEs may comprise a second MAC CE, and the second measurement information may comprise at least one of the following: measurement information for as many configurations in the set of configurations as possible; measurement information for the subset of configurations in an order of the timing of fulfillment of the condition; or measurement information for the subset of configurations in an order of the priority.
[0143] In some embodiments, the second MAC CE may further comprise at least one of the following: information of number of the subset of configurations associated with the second measurement information; or information of a size of third measurement information associated with the set of configurations that is not comprised in the second MAC CE.
[0144] In some embodiments, in accordance with a determination that the second MAC CE is transmitted, the terminal device 110 may perform an operation comprising at least one of the following: cancelling one or more triggered measurement reports associated with the subset of configurations; or starting or restarting a periodic reporting timer for each of the subset of configurations, and incrementing a counter for each of the subset of configurations.
[0145] In some embodiments, the set of first MAC CEs may comprise a first MAC CE and the set of second MAC CEs may comprise multiple second MAC CEs. The terminal device 110 may transmit the set of second MAC CEs by: segmenting the second measurement information or the first MAC CE into multiple segments based on the size of the uplink grant; and transmitting the multiple second MAC CEs comprising the multiple segments.
[0146] In some embodiments, a second MAC CE in the multiple second MAC CEs may further comprise at least one of the following: information indicating whether the second MAC CE is segmented; or information indicating whether the second MAC CE comprises a first segment, a last segment, or neither the first nor last segment in the multiple segments.
[0147] In some embodiments, in accordance with a determination that the multiple segments are transmitted, the terminal device 110 may perform an operation comprising at least one of the following: cancelling one or more triggered measurement reports associated with the subset of configurations; or starting or restarting a periodic reporting timer for each of the subset of configurations, and incrementing a counter for each of the subset of configurations.
[0148] In some embodiments, in accordance with a determination that the uplink grant is insufficient to accommodate the set of second MAC CEs plus a subheader of each of the set of second MAC CEs, the terminal device 110 may trigger at least one SR. In some embodiments, the terminal device 110 may generate the subheader of each of the set of second MAC CEs by using a LCID or eLCID value different from a LCID or eLCID value of the subheader of the first MAC CE.
[0149] In some embodiments, the set of first MAC CEs may comprise multiple first MAC CEs and the set of second MAC CEs may comprise a subset of the multiple first MAC CEs. The terminal device 110 may transmit the set of second MAC CEs by at least one of the following: transmitting the subset of multiple first MAC CEs comprising as many first MAC CEs in the multiple first MAC CEs as possible; transmitting the subset of the multiple first MAC CEs in an order of the timing of fulfillment of the condition; or transmitting the subset of the multiple first MAC CEs in an order of the priority.
[0150] In some embodiments, in accordance with a determination that the uplink grant is insufficient to accommodate a first MAC CE in the multiple first MAC CEs plus a subheader of the first MAC CE, the terminal device 110 may trigger at least one SR.
[0151] In some embodiments, a priority of a first MAC CE in the set of first MAC CEs or a second MAC CE in the set of second MAC CEs is the same as a priority of a MAC CE for BFR, or a MAC CE for configured grant confirmation, or a MAC CE for multiple entry configured grant confirmation.
[0152] In some embodiments, a condition to trigger the L1 measurement reporting may comprise that a signaling indicating an activation of a cell associated with a configuration for the L1 measurement reporting is received.
[0153] In some embodiments, the terminal device 110 may receive, from the network device 120, a set of configurations for SR. The set of configurations for SR may be associated with the set of configurations for the L1 measurement reporting.
[0154] With the method 300, an event triggered L1 measurement reporting may be carried out.
[0155] FIG. 4 illustrates a flowchart of an example method 400 of communication implemented at a network device in accordance with some embodiments of the present disclosure. For example, the method 400 may be performed at the network device 120 as shown in FIG. 1. For the purpose of discussion, in the following, the method 400 will be described with reference to FIG. 1. It is to be understood that the method 400 may include additional blocks not shown and / or may omit some blocks as shown, and the scope of the present disclosure is not limited in this regard.
[0156] At block 410, the network device 120 may transmit, to the terminal device 110, a set of configurations for a L1 measurement reporting.
[0157] At block 420, the network device 120 may receive a set of second MAC CEs comprising second measurement information from the terminal device 110 via an uplink grant. The uplink grant is insufficient to accommodate a set of first MAC CEs comprising first measurement information associated with the set of configurations plus a subheader of each of the set of first MAC CEs. The set of second MAC CEs comprising second measurement information is based on at least one of the following: quantity of beams, a size of the uplink grant, a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, or a priority of each of the set of configurations.
[0158] In some embodiments, the set of first MAC CEs may comprise a first MAC CE, the set of second MAC CEs may comprise a second MAC CE, and the set of configurations may comprise one configuration for the L1 measurement reporting. In some embodiments, the second measurement information may comprise measurement information of one or more beams with highest quantity. In some embodiments, the second measurement information may further comprise number of the one or more beams.
[0159] In some embodiments, the second measurement information may be associated with a subset of configurations in the set of configurations.
[0160] In some embodiments, the set of first MAC CEs may comprise a first MAC CE and the set of second MAC CEs may comprise a second MAC CE, and the second measurement information may comprise at least one of the following: measurement information for as many configurations in the set of configurations as possible; measurement information for the subset of configurations in an order of the timing of fulfillment of the condition; or measurement information for the subset of configurations in an order of the priority.
[0161] In some embodiments, the second MAC CE may further comprise at least one of the following: information of number of the subset of configurations associated with the second measurement information; or information of a size of third measurement information associated with the set of configurations that is not comprised in the second MAC CE.
[0162] In some embodiments, the set of first MAC CEs may comprise a first MAC CE and the set of second MAC CEs may comprise multiple second MAC CEs. The network device 120 may receive the set of second MAC CEs by: receiving the multiple second MAC CEs comprising multiple segments of the second measurement information or the first MAC CE that are segmented based on the size of the uplink grant.
[0163] In some embodiments, a second MAC CE in the multiple second MAC CEs may further comprise at least one of the following: information indicating whether the second MAC CE is segmented; or information indicating whether the second MAC CE comprises a first segment, a last segment, or neither the first nor last segment in the multiple segments.
[0164] In some embodiments, the set of first MAC CEs may comprise multiple first MAC CEs and the set of second MAC CEs may comprise a subset of the multiple first MAC CEs. The network device 120 may receive the set of second MAC CEs by at least one of the following: receiving the subset of multiple first MAC CEs comprising as many first MAC CEs in the multiple first MAC CEs as possible; receiving the subset of the multiple first MAC CEs in an order of the timing of fulfillment of the condition; or receiving the subset of the multiple first MAC CEs in an order of the priority.
[0165] In some embodiments, a priority of a first MAC CE in the set of first MAC CEs or a second MAC CE in the set of second MAC CEs may be the same as a priority of a MAC CE for BFR, or a MAC CE for configured grant confirmation, or a MAC CE for multiple entry configured grant confirmation.
[0166] In some embodiments, a condition to trigger the L1 measurement reporting may comprise that a signaling indicating an activation of a cell associated with a configuration for the L1 measurement reporting is received.
[0167] In some embodiments, the network device 120 may transmit, to the terminal device 110, a set of configurations for SR. The set of configurations for SR may be associated with the set of configurations for the L1 measurement reporting.
[0168] With the method 400, an event triggered L1 measurement reporting may be facilitated.
[0169] It is to be understood that the operations of methods 300 and 400 correspond to that described in connection with FIG. 2, and thus other details are not repeated here for conciseness.EXAMPLE IMPLEMENTATION OF DEVICES
[0170] FIG. 5 is a simplified block diagram of a device 500 that is suitable for implementing embodiments of the present disclosure. The device 500 can be considered as a further example implementation of the terminal device 110 or the network device 120 or a DU or CU of the network device 120 as shown in FIG. 1. Accordingly, the device 500 can be implemented at or as at least a part of the terminal device 110 or the network device 120 or a DU or CU of the network device 120.
[0171] As shown, the device 500 includes a processor 510, a memory 520 coupled to the processor 510, a suitable transceiver 540 coupled to the processor 510, and a communication interface coupled to the transceiver 540. The memory 510 stores at least a part of a program 530. The transceiver 540 may be for bidirectional communications or a unidirectional communication based on requirements. The transceiver 540 may include at least one of a transmitter 542 or a receiver 544. The transmitter 542 and the receiver 544 may be functional modules or physical entities. The transceiver 540 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones. The communication interface may represent any interface that is necessary for communication with other network elements, such as X2 / Xn interface for bidirectional communications between eNBs / gNBs, S1 / NG interface for communication between a mobility management entity (MME) / access and mobility management function (AMF) / SGW / UPF and the eNB / gNB, Un interface for communication between the eNB / gNB and a relay node (RN) , or Uu interface for communication between the eNB / gNB and a terminal device.
[0172] The program 530 is assumed to include program instructions that, when executed by the associated processor 510, enable the device 500 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to FIGs. 1 to 4. The embodiments herein may be implemented by computer software executable by the processor 510 of the device 500, or by hardware, or by a combination of software and hardware. The processor 510 may be configured to implement various embodiments of the present disclosure. Furthermore, a combination of the processor 510 and memory 520 may form processing means 550 adapted to implement various embodiments of the present disclosure.
[0173] The memory 520 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 520 is shown in the device 500, there may be several physically distinct memory modules in the device 500. The processor 510 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples. The device 500 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
[0174] In some embodiments, a terminal device comprises a circuitry configured to: determine that an uplink grant is insufficient to accommodate a set of first MAC CEs comprising first measurement information associated with a set of configurations for a L1 measurement reporting plus a subheader of each of the set of first MAC CEs; and transmit, to a network device via the uplink grant, a set of second MAC CEs comprising second measurement information based on at least one of the following: quantity of beams, a size of the uplink grant, a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, or a priority of each of the set of configurations.
[0175] In some embodiments, a network device comprises a circuitry configured to: transmit, to a terminal device, a set of configurations for a L1 measurement reporting; and receive, from the terminal device via an uplink grant that is insufficient to accommodate a set of first MAC CEs comprising first measurement information associated with the set of configurations plus a subheader of each of the set of first MAC CEs, a set of second MAC CEs comprising second measurement information based on at least one of the following: quantity of beams, a size of the uplink grant, a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, or a priority of each of the set of configurations.
[0176] The term ‘circuitry’ used herein may refer to hardware circuits and / or combinations of hardware circuits and software. For example, the circuitry may be a combination of analog and / or digital hardware circuits with software / firmware. As a further example, the circuitry may be any portions of hardware processors with software including digital signal processor (s) , software, and memory (ies) that work together to cause an apparatus, such as a terminal device or a network device, to perform various functions. In a still further example, the circuitry may be hardware circuits and or processors, such as a microprocessor or a portion of a microprocessor, that requires software / firmware for operation, but the software may not be present when it is not needed for operation. As used herein, the term circuitry also covers an implementation of merely a hardware circuit or processor (s) or a portion of a hardware circuit or processor (s) and its (or their) accompanying software and / or firmware.
[0177] Generally, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
[0178] The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium. The computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the process or method as described above with reference to FIGs. 1 to 4. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split between program modules as desired in various embodiments. Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
[0179] Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
[0180] The above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine readable medium may be a machine readable signal medium or a machine readable storage medium. A machine readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the machine readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
[0181] Further, while operations are depicted 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. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are contained in the above discussions, these should not be construed as limitations on the scope of the present disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable sub-combination.
[0182] Although the present disclosure has been described in language specific to structural features and / or methodological acts, it is to be understood that the present disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims
1.A terminal device, comprising:a processor configured to cause the terminal device to:determine that an uplink grant is insufficient to accommodate a set of first medium access control (MAC) control elements (CEs) comprising first measurement information associated with a set of configurations for a layer 1 (L1) measurement reporting plus a subheader of each of the set of first MAC CEs; andtransmit, to a network device via the uplink grant, a set of second MAC CEs comprising second measurement information based on at least one of the following:quantity of beams,a size of the uplink grant,a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, ora priority of each of the set of configurations.2.The terminal device of claim 1, wherein the set of first MAC CEs comprises a first MAC CE, the set of second MAC CEs comprises a second MAC CE, and the set of configurations comprises one configuration for the L1 measurement reporting, andwherein the second measurement information comprises measurement information of one or more beams with highest quantity.3.The terminal device of claim 2, wherein the second measurement information further comprises number of the one or more beams.4.The terminal device of claim 1, wherein the second measurement information is associated with a subset of configurations in the set of configurations.5.The terminal device of claim 4, wherein the set of first MAC CEs comprises a first MAC CE and the set of second MAC CEs comprises a second MAC CE, and the second measurement information comprises at least one of the following:measurement information for as many configurations in the set of configurations as possible;measurement information for the subset of configurations in an order of the timing of fulfillment of the condition; ormeasurement information for the subset of configurations in an order of the priority.6.The terminal device of claim 5, wherein the second MAC CE further comprises at least one of the following:information of number of the subset of configurations associated with the second measurement information; orinformation of a size of third measurement information associated with the set of configurations that is not comprised in the second MAC CE.7.The terminal device of claim 5, wherein the terminal device is further caused to:in accordance with a determination that the second MAC CE is transmitted, perform an operation comprising at least one of the following:cancelling one or more triggered measurement reports associated with the subset of configurations; orstarting or restarting a periodic reporting timer for each of the subset of configurations, and incrementing a counter for each of the subset of configurations.8.The terminal device of claim 4, wherein the set of first MAC CEs comprises a first MAC CE and the set of second MAC CEs comprises multiple second MAC CEs, and the terminal device is caused to transmit the set of second MAC CEs by:segmenting the second measurement information or the first MAC CE into multiple segments based on the size of the uplink grant; andtransmitting the multiple second MAC CEs comprising the multiple segments.9.The terminal device of claim 8, wherein a second MAC CE in the multiple second MAC CEs further comprises at least one of the following:information indicating whether the second MAC CE is segmented; orinformation indicating whether the second MAC CE comprises a first segment, a last segment, or neither the first nor last segment in the multiple segments.10.The terminal device of claim 8, wherein the terminal device is further caused to:in accordance with a determination that the multiple segments are transmitted, perform an operation comprising at least one of the following:cancelling one or more triggered measurement reports associated with the subset of configurations; orstarting or restarting a periodic reporting timer for each of the subset of configurations, and incrementing a counter for each of the subset of configurations.11.The terminal device of claim 5 or 8, wherein the terminal device is further caused to:in accordance with a determination that the uplink grant is insufficient to accommodate the set of second MAC CEs plus a subheader of each of the set of second MAC CEs, trigger at least one scheduling request (SR) ; orgenerate the subheader of each of the set of second MAC CEs by using a logic channel identity (LCID) or extended LCID (eLCID) value different from a LCID or eLCID value of the subheader of the first MAC CE.12.The terminal device of claim 4, wherein the set of first MAC CEs comprises multiple first MAC CEs and the set of second MAC CEs comprises a subset of the multiple first MAC CEs, and the terminal device is caused to transmit the set of second MAC CEs by at least one of the following:transmitting the subset of multiple first MAC CEs comprising as many first MAC CEs in the multiple first MAC CEs as possible;transmitting the subset of the multiple first MAC CEs in an order of the timing of fulfillment of the condition; ortransmitting the subset of the multiple first MAC CEs in an order of the priority.13.The terminal device of claim 12, wherein the terminal device is further caused to:in accordance with a determination that the uplink grant is insufficient to accommodate a first MAC CE in the multiple first MAC CEs plus a subheader of the first MAC CE, trigger at least one scheduling request (SR) .14.The terminal device of claim 1, wherein a priority of a first MAC CE in the set of first MAC CEs or a second MAC CE in the set of second MAC CEs is the same as a priority of a MAC CE for beam failure recovery (BFR) , or a MAC CE for configured grant confirmation, or a MAC CE for multiple entry configured grant confirmation.15.The terminal device of claim 1, wherein a condition to trigger the L1 measurement reporting comprises that a signaling indicating an activation of a cell associated with a configuration for the L1 measurement reporting is received.16.The terminal device of claim 1, wherein the terminal device is further caused to:receive, from the network device, a set of configurations for a scheduling request (SR) associated with the set of configurations for the L1 measurement reporting.17.A network device, comprising:a processor configured to cause the network device to:transmit, to a terminal device, a set of configurations for a layer 1 (L1) measurement reporting; andreceive, from the terminal device via an uplink grant that is insufficient to accommodate a set of first medium access control (MAC) control elements (CEs) comprising first measurement information associated with the set of configurations plus a subheader of each of the set of first MAC CEs, a set of second MAC CEs comprising second measurement information based on at least one of the following:quantity of beams,a size of the uplink grant,a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, ora priority of each of the set of configurations.18.The network device of claim 17, wherein the set of first MAC CEs comprises a first MAC CE, the set of second MAC CEs comprises a second MAC CE, and the set of configurations comprises one configuration for the L1 measurement reporting, andwherein the second measurement information comprises measurement information of one or more beams with highest quantity.19.The network device of claim 18, wherein the second measurement information further comprises number of the one or more beams.20.The network device of claim 17, wherein the second measurement information is associated with a subset of configurations in the set of configurations.21.The network device of claim 20, wherein the set of first MAC CEs comprises a first MAC CE and the set of second MAC CEs comprises a second MAC CE, and the second measurement information comprises at least one of the following:measurement information for as many configurations in the set of configurations as possible;measurement information for the subset of configurations in an order of the timing of fulfillment of the condition; ormeasurement information for the subset of configurations in an order of the priority.22.The network device of claim 21, wherein the second MAC CE further comprises at least one of the following:information of number of the subset of configurations associated with the second measurement information; orinformation of a size of third measurement information associated with the set of configurations that is not comprised in the second MAC CE.23.The network device of claim 20, wherein the set of first MAC CEs comprises a first MAC CE and the set of second MAC CEs comprises multiple second MAC CEs, and the network device is caused to receive the set of second MAC CEs by:receiving the multiple second MAC CEs comprising multiple segments of the second measurement information or the first MAC CE that are segmented based on the size of the uplink grant.24.The network device of claim 23, wherein a second MAC CE in the multiple second MAC CEs further comprises at least one of the following:information indicating whether the second MAC CE is segmented; orinformation indicating whether the second MAC CE comprises a first segment, a last segment, or neither the first nor last segment in the multiple segments.25.The network device of claim 20, wherein the set of first MAC CEs comprises multiple first MAC CEs and the set of second MAC CEs comprises a subset of the multiple first MAC CEs, and the network device is caused to receive the set of second MAC CEs by at least one of the following:receiving the subset of multiple first MAC CEs comprising as many first MAC CEs in the multiple first MAC CEs as possible;receiving the subset of the multiple first MAC CEs in an order of the timing of fulfillment of the condition; orreceiving the subset of the multiple first MAC CEs in an order of the priority.26.The network device of claim 17, wherein a priority of a first MAC CE in the set of first MAC CEs or a second MAC CE in the set of second MAC CEs is the same as a priority of a MAC CE for beam failure recovery (BFR) , or a MAC CE for configured grant confirmation, or a MAC CE for multiple entry configured grant confirmation.27.The network device of claim 17, wherein a condition to trigger the L1 measurement reporting comprises that a signaling indicating an activation of a cell associated with a configuration for the L1 measurement reporting is received.28.The network device of claim 17, wherein the network device is further caused to:transmit, to the terminal device, a set of configurations for a scheduling request (SR) associated with the set of configurations for the L1 measurement reporting.29.A method of communication at a terminal device, comprising:determining that an uplink grant is insufficient to accommodate a set of first medium access control (MAC) control elements (CEs) comprising first measurement information associated with a set of configurations for a layer 1 (L1) measurement reporting plus a subheader of each of the set of first MAC CEs; andtransmitting, to a network device via the uplink grant, a set of second MAC CEs comprising second measurement information based on at least one of the following:quantity of beams,a size of the uplink grant,a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, ora priority of each of the set of configurations.30.A method of communication at a network device, comprising:transmitting, to a terminal device, a set of configurations for a layer 1 (L1) measurement reporting; andreceiving, from the terminal device via an uplink grant that is insufficient to accommodate a set of first medium access control (MAC) control elements (CEs) comprising first measurement information associated with the set of configurations plus a subheader of each of the set of first MAC CEs, a set of second MAC CEs comprising second measurement information based on at least one of the following:quantity of beams,a size of the uplink grant,a timing of fulfillment of a condition to trigger the L1 measurement reporting for each of the set of configurations, ora priority of each of the set of configurations.