Channel information reporting for idle bandwidth portions

Abstract

Channel information transmission for idle bandwidth portions. According to an embodiment, a solution for transmitting channel information for a dormant bandwidth portion is proposed. A terminal device configures a periodicity when an active downlink (DL) bandwidth portion (BWP) is a dormant BWP. The periodicity differs from a further periodicity configured and used when the active DL BWP is a non-dormant BWP. The terminal device uses the resources configured for the active uplink (UL) BWP, but with a different periodicity. In this way, sounding reference signal (SRS) / channel state information (CSI) reporting is possible without duplicating the BWP configuration. This may configure a longer periodicity than required, but may reduce the SRS configuration for each UL BWP.

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE Embodiments of the present disclosure relate generally to the field of telecommunications, and more particularly, to methods, devices, apparatus, and computer-readable storage media for channel information reporting for idle bandwidth portions. [Background technology]

[0002] With the development of communication systems, more and more techniques are proposed. For example, a technique called "Bandwidth Partition (BWP)" is introduced. A BWP is a contiguous set of physical resource blocks selected from a contiguous subset of common resource blocks for a given numerology on a given carrier. Multiple BWPs may be configured for the uplink and downlink between a terminal device and a network device. The BWP configured for the uplink and the BWP configured for the downlink may be selected independently. In general, only one BWP may be activated at each particular moment. Summary of the Invention

[0003] Generally, the exemplary embodiments of the present disclosure provide a solution for channel information reporting for idle bandwidth portions.

[0004] In a first aspect, a first device is provided. The first device comprises at least one processor and at least one memory including computer program code, and the at least one memory and computer program code are configured to cause the first device, using the at least one processor, to receive from a second device a configuration for transmitting channel information indicating a periodicity for transmitting channel information when an active downlink bandwidth portion (BWP) of a serving cell is a dormant bandwidth portion. The first device is also adapted to determine whether an active downlink BWP for the serving cell is a dormant bandwidth portion. The first device further transmits the channel information to the second device using the periodicity according to the determination that the active downlink BWP is a dormant bandwidth portion.

[0005] In a second aspect, a second device is provided. The second device comprises at least one processor and at least one memory including computer program code, and the at least one memory and the computer program code are configured to cause the second device, using the at least one processor, to transmit to the first device a configuration for transmitting channel information indicating a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) of a serving cell is a dormant bandwidth portion. The second device is further configured to determine that the active downlink BWP for the serving cell is a dormant bandwidth portion. The second device is also configured to receive the channel information to the second device having the periodicity.

[0006] In a third aspect, a method is provided. The method comprises receiving, at a first device and from a second device, a configuration for transmitting channel information, the configuration indicating a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) of a serving cell is a dormant bandwidth portion. The method also comprises determining whether an active downlink BWP for the serving cell is a dormant bandwidth portion. The method further comprises transmitting the channel information to the second device using the periodicity according to a determination that the active downlink BWP is a dormant bandwidth portion.

[0007] In a fourth aspect, a method is provided. The method comprises transmitting a configuration for transmitting channel information at a second device and to a first device, the configuration indicating a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) of a serving cell is a dormant bandwidth portion. The method also comprises determining that an active downlink BWP of the serving cell is a dormant bandwidth portion. The method further comprises receiving the channel information at the second device using the periodicity.

[0008] In a fifth aspect, an apparatus is provided, comprising: means for receiving, at a first device and from a second device, a configuration for transmitting channel information indicating a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) of a serving cell is a dormant bandwidth portion, means for determining whether the active downlink BWP of the serving cell is a dormant bandwidth portion, and means for transmitting the channel information to the second device with the periodicity according to a determination that the active downlink BWP is the dormant bandwidth portion.

[0009] In a sixth aspect, an apparatus is provided, comprising: means, at a second device, for transmitting, to a first device, a configuration for transmitting channel information indicating a configuration for transmitting the channel information when an active downlink bandwidth portion (BWP) of a serving cell is a dormant bandwidth portion, means for determining that an active downlink BWP of the serving cell is the dormant bandwidth portion, and means for receiving, at the second device, the channel information using periodicity.

[0010] In a seventh aspect, there is provided a computer readable medium comprising program instructions for causing an apparatus to perform at least a method according to any one of the third and fourth aspects above.

[0011] It should be understood that the Summary of the Invention section is not intended to identify key or essential features of the embodiments of the present disclosure, nor is it intended to be used to limit the scope of the present disclosure. Other features of the present disclosure will be readily understood by the following description. [Brief description of the drawings]

[0012] Several example embodiments will now be described with reference to the accompanying drawings. [Figure 1] FIG. 1 illustrates an exemplary communications environment in which exemplary embodiments of the present disclosure may be practiced. [Diagram 2] FIG. 2 illustrates a signaling flow for channel information reporting for idle bandwidth portions, in accordance with some example embodiments of the present disclosure. [Diagram 3] FIG. 3 illustrates a schematic diagram of a Medium Access Control (MAC) Control Element (CE) according to some example embodiments of the present disclosure. [Figure 4] FIG. 4 illustrates a flowchart of a method implemented in a first device according to some exemplary embodiments of the present disclosure. [Diagram 5]FIG. 5 shows a flowchart of a method implemented in a second device according to some other example embodiments of the present disclosure. [Figure 6] FIG. 6 illustrates a simplified block diagram of an apparatus suitable for practicing exemplary embodiments of the present disclosure. [Figure 7] FIG. 7 illustrates a block diagram of an exemplary computer-readable medium in accordance with some exemplary embodiments of the present disclosure.

[0013] Throughout the drawings, the same or similar reference numbers represent the same or similar elements. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Next, the principles of the present disclosure will be described with reference to some exemplary embodiments. It should be understood that these embodiments are described for illustrative purposes only, to assist those skilled in the art in understanding and implementing the present disclosure, and are not intended to imply any limitations on the scope of the present disclosure. The embodiments of the present invention can be implemented in various ways other than those described below.

[0015] Unless otherwise defined in the following description and claims, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which this disclosure belongs.

[0016] References in this disclosure to "one embodiment," "embodiment," "exemplary embodiment," and the like indicate that the embodiment being described may include a particular feature, structure, or characteristic, but not all embodiments need to include the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one of ordinary skill in the art to affect such feature, structure, or characteristic in connection with other embodiments, whether or not explicitly described.

[0017] Terms such as "first" and "second" may be used herein to describe various elements, but it should be understood that these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element can be referred to as a second element, and similarly, a second element can be referred to as a first element, without departing from the scope of the exemplary embodiments. As used herein, the term "and / or" includes any and all combinations of one or more of the listed terms.

[0018] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. The terms "comprises," "comprising," "has," "having," "includes," and / or "including," as used herein, specify the presence of stated features, elements, and / or components, etc., but do not exclude one or more other features, elements.

[0019] As used in this application, the term "circuitry" may refer to one or more or all of the following: (a) Hardware-only circuit implementations (e.g., analog and / or digital-only circuit implementations); and (b) (where applicable) any combination of hardware circuitry and software; (i) A combination of analog and / or digital hardware circuitry and software / firmware; and (ii) any portion of software (including digital signal processors), hardware processors having software and memory that cooperate to cause a device, such as a mobile phone or a server, to perform various functions; (c) A hardware circuit and / or processor, such as a microprocessor or part of a microprocessor, that requires software (e.g., firmware) for operation, although the software may not be present when not needed for operation.

[0020] This definition of circuitry applies to all uses of the term in this application, including any claims. As a further example, as used in this application, the term circuitry also encompasses merely a hardware circuitry or processor (or processors), or a portion of a hardware circuitry or processor, and its (or their) associated software and / or firmware implementations. The term circuitry also encompasses, for example, baseband integrated circuits or processor integrated circuits for mobile devices or similar integrated circuits in servers, cellular network devices, or other computing or network devices, if applicable to certain claim elements.

[0021] As used herein, the term "communication network" refers to a network conforming to any suitable communication standard, such as New Radio (NR), Long Term Evolution (LTE), LTE Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High Speed ​​Packet Access (HSPA), Narrowband Internet of Things (NB-IoT), etc. Furthermore, communication between terminal devices and network devices in the communication network may be performed according to any suitable first generation communication protocol, including, but not limited to, first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, future fifth generation (5G) communication protocols, and / or other protocols known or to be developed in the future. The embodiments of the present disclosure may be applied to various communication systems. Considering the rapid development in communication, there are of course future types of communication technologies and systems in which the present disclosure may be implemented. The technical scope of the present disclosure should not be considered as being limited only to the above-mentioned systems.

[0022] As used herein, the term "network device" refers to a node in a communication network through which a terminal device accesses the network and receives services therefrom. Depending on the term and technology applied, a network device may refer to a base station (BS) or access point (AP), for example, a Node B (NodeB or NB), evolved Node B (eNodeB or eNB), NR NB (also called gNB), remote radio unit (RRU), radio header (RH), remote radio head (RRH), repeater, integrated and access backhaul (IAB) node, low power node such as femto, pico, non-terrestrial network (NTN) or non-terrestrial network device such as satellite network device, low earth orbit (LEO) satellite, and geostationary earth orbit (GEO) satellite, airborne network device, etc.

[0023] The term "terminal device" refers to any end device that may be capable of wireless communication. By way of example and not limitation, a terminal device may be referred to as a communication device, a user equipment (UE), a subscriber station (SS), a portable subscriber station, a mobile station (MS), or an access terminal (AT). Terminal devices may include, but are not limited to, mobile phones, cell phones, smartphones, voice-over-IP (VoIP) phones, wireless local loop phones, tablets, wearable terminal devices, personal digital assistants (PDAs), portable computers, desktop computers, gaming terminal devices, music storage and playback devices, vehicle wireless terminal devices, wireless endpoints, mobile stations, laptop embedded devices (LEEs), laptop mounted devices (LMEs), USB dongles, smart devices, wireless customer premises equipment (CPEs), Internet of Things (loT) devices, watches or other wearables, head mounted displays (HMDs), vehicles, drones, medical devices and applications (e.g., remote surgery), industrial devices and applications (e.g., robots and / or other wireless devices operating in industrial and / or automated processing chain contexts), consumer electronic devices, devices operating on commercial and / or industrial wireless networks, etc. In the following description, the terms "terminal device", "communication device", "terminal", "user equipment", and "UE" may be used interchangeably.

[0024] As mentioned above, a BWP is introduced. Multiple BWPs may be configured for the uplink and downlink, respectively. Although multiple BWPs may be defined in the downlink and uplink, only one BWP may be active at each particular moment. For the downlink, a terminal device may be configured with up to four BWPs. The bandwidth of each BWP may be equal to or greater than the bandwidth of a synchronization signal (SS) block, but may or may not include an SS block. Only one BWP may be active at a time. The terminal device may not be expected to receive a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH), a channel state information reference signal (CSI-RS), or a tracking reference signal (TRS) outside of the BWP.

[0025] For the uplink, the terminal device may be configured with up to four BWPs. Only one BWP may be active at a time. If the terminal device is configured with an auxiliary uplink, it may further be configured with up to one or more BWPs in the auxiliary uplink. The UE may not transmit a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) outside of an active BWP.

[0026] Furthermore, a dormant secondary cell (SCell) state is introduced. When a terminal device is in a dormant SCell state, there is no PDCCH monitoring or uplink transmission. Only periodic channel set information may be reported via the primary cell (PCell). Similarly, a dormant BWP is also introduced. In particular, when a BWP is activated and it is a dormant BWP, the bwp-InactivityTimer of this serving cell may be stopped. The terminal device may not monitor the PDCCH on the BWP and may not monitor the PDCCH for the BWP. The downlink shared channel (DL-SCH) on the BWP may not be received. The terminal device may perform CSI measurements for the BWP if configured. The sounding reference signal (SRS) may not be transmitted on the BWP. The uplink shared channel (UL-SCH) on the BWP may also not be transmitted on the BWP. The network device may not transmit the physical uplink control channel (PUCCH) on the BWP. Any configured downlink assignment and any configured uplink grant type 2 related to the SCell may be cleared, respectively. Any configured uplink grant type 1 associated with the SCell may be suspended.

[0027] There is an assumption that there is no periodic SRS transmission for the serving cell when the UE is on a dormant DL BWP (potentially the cell receiving A-CSI, this was not yet clear). The problem needs to be solved. Thus, the question is how to enable SRS transmission on a dormant BWP without the need to configure a rather large SRS-config for each UL BWP. The following agreement was made under the assumption that there is no UL transmission for the serving cell when the DL is on a dormant BWP for the serving cell. In particular, no uplink dormant BWP is defined. The terminal device does not switch uplink BWPs as a result of a transition from dormant to non-dormant for DL ​​BWPs. An active SCell whose active BWP is a dormant BWP should not be included in the power headroom (PHR) reporting. Therefore, there is no discussion on how the UL transmission / PHR works.

[0028] According to an embodiment, a solution for channel information reporting for a serving cell with a dormant bandwidth portion is proposed. A terminal device is configured with a periodicity when an active DL BWP for a serving cell is a dormant BWP. The periodicity is different from a further periodicity configured and used when the active DL BWP is a non-dormant BWP. The terminal device uses resources configured for an active UL BWP, but with a different periodicity. In this way, it allows SRS / CSI reporting without duplicating the configuration of the BWP. It can configure a longer periodicity, but reduce / avoid duplication of SRS configuration for each UL BWP.

[0029] 1 shows a schematic diagram of a communication environment 100 in which embodiments of the present disclosure can be implemented. The communication environment 100 is part of a communication network and includes devices 110-1, 110-2, ..., 110-N, which may be collectively referred to as a "first device 110." The communication environment 100 further includes a second device 120 that can communicate with the first device 110.

[0030] The communication environment 100 may include any suitable number of devices and cells. In the communication environment 100, the first device 110 and the second device 120 may communicate data and control information with each other. When the first device 110 is a terminal device and the second device 120 is a network device, the link from the second device 120 to the first device 110 is called a downlink (DL) and the link from the first device 110 to the second device 120 is called an uplink (UL). The second device 120 and the first device 110 are interchangeable.

[0031] It should be understood that the number of first devices and cells and their connections shown in Figure 1 are given for illustrative purposes, without implying any limitation. The communication environment 100 may include any suitable number of devices and networks adapted to implement embodiments of the present disclosure.

[0032] Communications in the communication environment 100 may be implemented according to any suitable communications protocol, including, but not limited to, cellular communications protocols such as first generation (1G), second generation (2G), third generation (3G), fourth generation (4G) and fifth generation (5G), wireless local network communications protocols such as Institute of Electrical and Electronics Engineers (IEEE) 802.11, and / or any other protocols now known or to be developed in the future. Furthermore, communications may utilize any suitable wireless communications technology, including, but not limited to, code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), frequency division duplex (FDD), time division duplex (TDD), multiple-input multiple-output (MIMO), orthogonal frequency division multiplexing (OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), and / or any other technology now known or to be developed in the future.

[0033] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Reference is now made to Fig. 2, which illustrates a signaling flow 200 for reporting channel information for a idle bandwidth portion according to some example embodiments of the present disclosure. For illustrative purposes, the signaling flow 200 will be described with reference to Fig. 1. The signaling flow 200 may include a first device 110-1 and a second device 120.

[0034] The second device 120 transmits (2005) a configuration for transmitting channel information. The channel information may be a CSI report. Alternatively or additionally, the channel information may be an uplink reference signal. For example, the uplink reference signal may be an SRS signal. It should be noted that the channel information may be other suitable information / signals. In some exemplary embodiments, the configuration may be transmitted together with an initial configuration of the UL BWP.

[0035] The configuration indicates a periodicity for transmitting channel information when the active DL BWP for the serving cell is a dormant BWP. In some exemplary embodiments, the periodicity may be different from the further periodicity configured and used when the active downlink BWP for the serving cell is a non-dormant BWP. For example, the periodicity may be a multiple of the further periodicity. As an example, if the further periodicity is 100 ms, the periodicity may be 200 ms. It should be noted that the periodicity may be any suitable integer multiple of the further periodicity. In some exemplary embodiments, the configuration may indicate an explicit periodicity value, e.g., 200 ms. Alternatively, the configuration may indicate a multiplier. For example, if the configuration indicates 2 and the further periodicity is 100 ms, the periodicity means that it is 2 times longer than the further periodicity, i.e., 200 ms. In this way, overlapping of the configuration of the UL BWP is avoided.

[0036] In other exemplary embodiments, the configuration may indicate an offset that may be used to obtain the periodicity. For example, the offset may be rounded up / down to the nearest allowed periodicity value. In some exemplary embodiments, the offset may be an explicit offset value. Alternatively or additionally, the offset may be a multiplier.

[0037] Alternatively, the configuration may indicate a target UL BWP for transmitting channel information when the active DL BWP for the serving cell is a dormant BWP. In some exemplary embodiments, the target UL BWP may be linked to one of the SRS / CSI configurations (i.e., CSI / SRS resource sets) configured for the UL BWP of terminal device 110-1.

[0038] The periodicity may be configured for a cell group cell. In this situation, the periodicity may be common for all serving cells in the cell group configured with a dormant BWP. Alternatively, the periodicity may be configured for each UL BWP of the serving cell. In other words, the periodicity of the UL BWP may be different for the active DL BWP during the dormant BWP. Thus, SRS transmission is performed while the DL is on a dormant BWP only if the corresponding UL BWP is active (i.e., such additional periodicity may not be configured for each UL BWP). Also, resource sets for transmitting channel information may be configured with different periodicities. For example, the periodicity may be configured for each resource set. In other exemplary embodiments, the periodicity may be configured for each dormant BWP. For example, different dormant DL BWPs may correspond to different UL BWP periodicities. Table 1 below shows that the configuration of the SRS periodicity is currently performed over each SRS resource. Table 2 shows that the periodicity also includes an offset to the current periodicity. [Table 1-1] [Table 1-2] [Table 2]

[0039] The second device 120 determines the active DL BWP to be a dormant BWP (2008). For example, if there are four DL BWPs, one of the DL BWPs may be configured as a dormant BWP. As an example, the first DL BWP may be a dormant BWP. If the active DL BWP is the first DL BWP, the active DL BWP is determined to be a dormant BWP. In some exemplary embodiments, the network device 120 may switch to a new DL BPW and determine the new DL BPW to be a dormant BWP. For example, if the first DL BWP is preconfigured as a dormant BWP and the first DL BWP is the active DL BWP, the second device 120 may determine that the active DL BWP is a dormant BWP. In some exemplary embodiments, the second device 120 may send a command or configuration to the first device 110-1 to move to a dormant UL BWP (2010).

[0040] The first device 110-1 determines whether the active DL BWP is a dormant BWP (2015). For example, an index of the dormant BWP may be preconfigured in the first device 110-1, and the first device 110-1 may compare the index of the active DL BWP with the index of the dormant BWP to determine whether the active DL BWP is a dormant BWP. Alternatively, the first device 110-1 may receive an indication that the active DL BWP is a dormant BWP.

[0041] In some exemplary embodiments, the first device 110-1 may obtain the periodicity (2020). In some exemplary embodiments, if the configuration may indicate an explicit periodicity value, e.g., 200 ms, the first device 110-1 may obtain the periodicity directly from the configuration. Alternatively, if the configuration may indicate a multiplier, the first device 110-1 may obtain the periodicity based on the multiplier and the further periodicity configured to transmit channel information when the active downlink BWP of the serving cell is on a non-dormant bandwidth portion. For example, if the configuration indicates 2 and the further periodicity is 100 ms, the periodicity means that the further periodicity, i.e., 2 times longer than 200 ms. In this way, the preconfigured resources may be used in the context of dormant BWP.

[0042] Alternatively, the first device 110-1 may obtain an offset that may be used to obtain the periodicity (2025). For example, the offset may be rounded up / down to the nearest allowed periodicity value. The first device 110-1 may determine the periodicity based on the offset and the further periodicity. In some exemplary embodiments, the offset may be an explicit offset value. For example, if the offset indicates 100 ms and the further periodicity is 100 ms, the periodicity means that it is 200 ms. Alternatively or additionally, the offset may be a multiplier. For example, if the offset indicates 2 and the further periodicity is 100 ms, the periodicity means that it is 2 times longer than the further periodicity, i.e., 200 ms.

[0043] The first device 110-1 may obtain, from the configuration, a target UL BWP for transmitting channel information when the serving cell's active downlink BWP is on a dormant bandwidth portion (2030). In some exemplary embodiments, the target UL BWP may be linked to one of the SRS / CSI configurations (i.e., CSI / SRS resource sets) configured for the UL BWP of the terminal device 110-1. For example, multiple UL BWPs may be configured, and one of the UL BWPs may be configured as a dormant BWP. If the current UL BWP is different from the target UL BWP, the first device 110-1 may switch from the current UL BWP to the target UL BWP when the DL BWP is the dormant BWP. As mentioned above, the periodicity for the target UL BWP may be a multiple of the further periodicity. Alternatively, the first device 110-1 may obtain an explicit periodicity value for the target UL BWP. Additionally, the first device 110-1 may obtain an offset and determine the periodicity of the target UL BWP based on the offset and the further periodicity.

[0044] The first device 110-1 may apply a periodicity to the current UL BWP (2035). For example, if the active DL BWP is a dormant BWP, the first device 110-1 may extend the periodicity of the current UL BWP, for example, from 100 ms to 200 ms. In this situation, the first device 110-1 may still use the current UL BWP, but with a longer periodicity.

[0045] Alternatively, the first device 110-1 may apply the channel information configuration (e.g., CSI configuration and / or SRS configuration) of the current UL BWP to the target UL BWP. In other embodiments, only the CSI / SRS configuration periodicity is configured separately for the target UL BWP. In a further exemplary embodiment, the periodicity is configured using a semi-persistent SRS configuration, but the indicated periodicity overrides the original configuration.

[0046] The second device 120 may transmit a medium access control (MAC) control element (CE) (2040). The MAC CE may indicate a set of resources for transmitting channel information when the active downlink BWP for the serving cell is a dormant BWP. Furthermore, the SRS may be triggered using the existing semi-persistent SRS, because they may also be triggered using the existing SP-SRS activation / deactivation MAC CE (thus, whether to activate the SRS resource is within the network control). For example, each BWP may be configured with multiple settings of resources, and the MAC CE may be used to activate / deactivate one or more settings of the semi-persistent (SP) SPS resources. For example, the MAC CE may use one bit to indicate that this SP-SRS indication is valid only for dormant cells. FIG. 3 illustrates a schematic diagram of a MAC CE according to some exemplary embodiments of the present disclosure. The MAC CE is identified by a MAC subheader with a logical channel ID (LCID) as shown in FIG. 3. There is a variable size with the following fields. In this way, the resources can be controlled more flexibly.

[0047] The A / D field 3010 may indicate whether to activate or deactivate the indicated SP SRS resource configuration. The A / D field 3010 may be set to 1 to indicate activation, otherwise indicating deactivation.

[0048] The SRS resource set cell ID field 3020 may indicate the identity of the serving cell that contains the activated / deactivated SP SRS resource set. If the C field 3050 is set to 0, then this SRS resource set cell ID field 3020 also indicates the identity of the serving cell that contains all resources (e.g., 3090-1, ..., 3090-M, where M may be any suitable integer) indicated by the resource IDi field 3090. The SRS resource set cell ID field 3020 is 5 bits in length.

[0049] The BWP ID field of the SRS resource set 3030 may indicate the UL BWP as a code point of the downlink control indicator bandwidth portion indicator field that includes the activated / deactivated SP SRS resource set. If the C field 3050 is set to 0, then the BWP identification field of this SRS resource set 3030 also indicates the identity of the BWP that includes all resources indicated by the resource IDi field. The length of the BWP ID field of the SRS resource set 3030 is 2 bits.

[0050] The C field 3050 may indicate whether the octets including the resource serving cell ID field 3092 (e.g., 3092-1, ..., 3092-M, where M may be any suitable integer) and the resource BWP ID field 3094 (e.g., 3094-1, ..., 3094-M, where M may be any suitable integer) are present. If this C field 3050 is set to 1, then the octets including the resource serving cell ID field 3092 and the resource BWP ID field 3094 are present, otherwise they are not present.

[0051] The Supplemental UL (SUL) field 3060 may indicate whether the MAC CE applies to a normal UL (NUL) carrier configuration or to a SUL carrier configuration, where the SUL field 3060 is set to 1 to indicate that it applies to a SUL carrier configuration, and the SUL field 3060 is set to 0 to indicate that it applies to a NUL carrier configuration.

[0052] The SP SRS Resource Set ID field 3070 may indicate the SP SRS Resource Set ID identified by the SRS-ResourceSetId that is to be activated or deactivated. The SP SRS Resource Set ID field 3070 is 4 bits in length.

[0053] The Fi field 3080 (e.g., 3080-1, ..., 3080-M, where M may be any suitable integer) may indicate the type of resource used as a spatial association for the SRS resource in the SP SRS resource set indicated by the SP SRS Resource Set ID field 3070. F0 refers to the first SRS resource in the resource set, F1 to the second SRS resource, etc. The Fi field 3080 is set to 1 to indicate that a non-zero power (NZP) CSI-RS resource index is used, and the Fi field 3080 is set to 0 to indicate that either an SSB index or an SRS resource index is used. The Fi field 3080 is 1 bit in length. This field is only present if MAC CE is used for activation, i.e., the A / D field is set to 1.

[0054] The Resource IDi field 3090 (e.g., 3090-1, ..., 3090-M, where M can be any suitable integer) contains identifiers of resources used for spatial relationship derivation for SRS resource i. Resource ID0 refers to the first SRS resource in the resource set, Resource ID1 refers to the second SRS resource, etc. If the Fi field 3080 is set to 0 and the first bit of this field 3090 is set to 1, the remainder of this field contains the SSB-Index. If Fi is set to 0 and the first bit of this field 3090 is set to 0, the remainder of this field contains the SRS-ResourceId. The Resource IDi field 3090 is 7 bits in length. This Resource IDi field 3090 is only present if the A / D field is set to 1.

[0055] The resource serving cell IDi field 3092 may indicate the identity of the serving cell in which the resources used for spatial relationship derivation for SRS resource i are located. The resource serving cell IDi field 3092 is 5 bits in length. The resource BWP IDi 3094 may indicate the UL BWP as a codepoint of the DCI bandwidth portion indicator field in which the resources used for spatial relationship derivation for SRS resource i are located. The resource BWP IDi 3094 is 2 bits in length. The R field 3040 (e.g., 3040-1, 3040-2, 3040-3, ..., 3040-P, where P may be any suitable number) may be reserved bits. As shown in Figure 3, the field 3040-2 belonging to the reserved bits may indicate that the SP-SRS activation is for a dormant SCell UL transmission.

[0056] The first device 110-1 may determine a set of resources based on the MAC CE 2045. For example, if this D field 3040-1 is set to 1, the first device 110-1 may determine that the SP-SRS is activated only for the dormant SCell.

[0057] The first device 110-1 transmits (2050) the channel information to the second device 120. For example, the channel information may be transmitted on the current UL BWP with periodicity. Alternatively, the first device 110-1 may transmit the channel information on a target UL BWP.

[0058] According to an embodiment of the present disclosure, it enables SRS / CSI reporting without duplicating the BWP configuration, thereby saving signaling. It can configure a longer periodicity than required, but reduces the SRS configuration for each UL BWP. There is no need to reconfigure the BWP.

[0059] 4 illustrates a flowchart of an example method 400 implemented in the first device 110, according to some example embodiments of the present disclosure. For purposes of explanation, the method 400 is described from the perspective of the first device 110-1.

[0060] In block 410, the first device 110-1 receives a configuration for transmitting channel information. The channel information may be a CSI report. Alternatively or additionally, the channel information may be an uplink reference signal. For example, the uplink reference signal may be an SRS signal. It should be noted that the channel information may be other suitable information / signals. In some exemplary embodiments, the configuration may be transmitted together with an initial configuration of the UL BWP.

[0061] The configuration indicates a periodicity for transmitting channel information when the active DL BWP for the serving cell is a dormant BWP. In some exemplary embodiments, the periodicity may not be shorter than the further periodicity configured and used when the active downlink BWP for the serving cell is a non-dormant BWP. For example, the periodicity may be a multiple of the further periodicity. As an example, if the further periodicity is 100 ms, the periodicity may be 200 ms. It should be noted that the periodicity may be any suitable integer multiple of the further periodicity. In some exemplary embodiments, the configuration may indicate an explicit periodicity value, e.g., 200 ms. Alternatively, the configuration may indicate a multiplier. For example, if the configuration indicates 2 and the further periodicity is 100 ms, the periodicity means that it is 2 hours longer than the further periodicity, i.e., 200 ms. In this way, overlapping configurations of UL BWPs are avoided.

[0062] In other exemplary embodiments, the configuration may indicate an offset that may be used to obtain the periodicity. For example, the offset may be rounded up / down to the nearest allowed periodicity value. In some exemplary embodiments, the offset may be an explicit offset value. Alternatively or additionally, the offset may be a multiplier.

[0063] Alternatively, the configuration may indicate a target UL BWP for transmitting channel information when the active DL BWP for the serving cell is a dormant BWP. In some exemplary embodiments, the target UL BWP may be linked to one of the SRS / CSI configurations (i.e., CSI / SRS resource sets) configured for the UL BWP of terminal device 110-1.

[0064] The periodicity may be configured for a cell group cell. In this situation, the periodicity may be common for all serving cells in the cell group configured with a dormant BWP. Alternatively, the periodicity may be configured for each UL BWP of the serving cell. In other words, the periodicity of the UL BWP may be different for active DL BWPs during a dormant BWP. Thus, SRS transmission is performed while the DL is on a dormant BWP only if the corresponding UL BWP is active (i.e., such additional periodicity may not be configured for each UL BWP). Also, resource sets for transmitting channel information may be configured with different periodicities. For example, the periodicity may be configured for each resource set. In other exemplary embodiments, the periodicity may be configured for each dormant BWP. For example, different dormant DL BWPs may correspond to different UL BWP periodicities.

[0065] In block 420, the first device 110-1 determines whether the active DL BWP is a dormant BWP. For example, an index of the dormant BWP may be preconfigured in the first device 110-1, and the first device 110-1 may compare the index of the active DL BWP with the index of the dormant BWP to determine whether the active DL BWP is a dormant BWP. Alternatively, the first device 110-1 may receive an indication that the active DL BWP is a dormant BWP.

[0066] In some exemplary embodiments, the first device 110-1 may obtain the periodicity. In some exemplary embodiments, if the configuration may indicate an explicit periodicity value, e.g., 200 ms, the first device 110-1 may obtain the periodicity directly from the configuration. Alternatively, if the configuration may indicate a multiplier, the first device 110-1 may obtain the periodicity based on the multiplier and the further periodicity configured to transmit channel information when the active downlink BWP of the serving cell is on a non-dormant bandwidth portion. For example, if the configuration indicates 2 and the further periodicity is 100 ms, the periodicity means that the further periodicity, i.e., 2 times longer than 200 ms. In this way, the preconfigured resources may be used in the context of dormant BWP.

[0067] Alternatively, the first device 110-1 may obtain an offset that may be used to obtain the periodicity. For example, the offset may be rounded up / down to the nearest allowed periodicity value. The first device 110-1 may determine the periodicity based on the offset and the further periodicity. In some exemplary embodiments, the offset may be an explicit offset value. For example, if the offset indicates 100 ms and the further periodicity is 100 ms, the periodicity means that it is 200 ms. Alternatively or additionally, the offset may be a multiplier. For example, if the offset indicates 2 and the further periodicity is 100 ms, the periodicity means that it is 2 times longer than the further periodicity, i.e., 200 ms.

[0068] The first device 110-1 may obtain, from the configuration, a target UL BWP for transmitting channel information when the active downlink BWP for the serving cell is on a dormant bandwidth portion. In some exemplary embodiments, the target UL BWP may be linked to one of the SRS / CSI configurations (i.e., CSI / SRS resource sets) configured for the UL BWP of the terminal device 110-1. For example, multiple UL BWPs may be configured, and one of the UL BWPs may be configured as a dormant BWP. If the current UL BWP is different from the target UL BWP, the first device 110-1 may switch from the current UL BWP to the target UL BWP when the DL BWP is the dormant BWP. As mentioned above, the periodicity for the target UL BWP may be a multiple of the further periodicity. Alternatively, the first device 110-1 may obtain an explicit periodicity value for the target UL BWP. Furthermore, the first device 110-1 may obtain an offset and determine the periodicity of the target UL BWP based on the offset and the further periodicity.

[0069] The first device 110-1 may apply a periodicity to the current UL BWP. For example, if the active DL BWP is a dormant BWP, the first device 110-1 may extend the periodicity of the current UL BWP, for example, from 100 ms to 200 ms. In this situation, the first device 110-1 may still use the current UL BWP, but with a longer periodicity.

[0070] Alternatively, the first device 110-1 may apply the CSI / SRS configuration of the current UL BWP to the target UL BWP. In other embodiments, only the CSI / SRS configuration periodicity is configured separately for the target UL BWP. In a further exemplary embodiment, the periodicity is configured using a semi-persistent SRS configuration, but the indicated periodicity overrides the original configuration.

[0071] In some exemplary embodiments, the first device 110-1 may receive a MAC CE from the second device 120. The MAC CE may indicate a set of resources for transmitting channel information when the active downlink BWP for the serving cell is a dormant BWP. Furthermore, the SRS may be triggered using the existing semi-persistent SRS, because they may also be triggered using the existing SP-SRS activation / deactivation MAC CE (thus, whether to activate the SRS resources is within the network control). For example, each BWP may be configured with multiple settings of resources, and the MAC CE may Semi-persistent The D field 3040-1 may be used to activate / deactivate one or more configurations of (SP) SPS resources. For example, the MAC CE may use one bit to indicate that this SP-SRS indication is valid only for dormant cells. The first device 110-1 may determine a set of resources based on the MAC CE. For example, if this D field 3040-1 is set to 1, the first device 110-1 may determine that the SP-SRS is activated only for dormant SCells.

[0072] In block 430, the first device 110-1 transmits (2050) the channel information to the second device 120. For example, the channel information may be transmitted on the current UL BWP using periodicity. Alternatively, the first device 110-1 may transmit the channel information on a target UL BWP.

[0073] According to an embodiment of the present disclosure, it avoids duplication of BWP configuration, thereby conserving signaling, it can configure a longer periodicity than required, but it can reduce SRS configuration for each UL BWP, and it can also conserve resources since it does not require reconfiguration.

[0074] 5 illustrates a flowchart of an example method 500 implemented in the second device 120, according to some example embodiments of the present disclosure. For purposes of explanation, the method 500 is described from the perspective of the second device 120.

[0075] In block 510, the second device 120 transmits a configuration for transmitting channel information. The channel information may be a CSI report. Alternatively or in addition, the channel information may be an uplink reference signal. For example, the uplink reference signal may be an SRS signal. It should be noted that the channel information may be other suitable information / signals. In some exemplary embodiments, the configuration may be transmitted together with the initial configuration of the UL BWP.

[0076] The configuration indicates a periodicity for transmitting channel information when the active DL BWP for the serving cell is a dormant BWP. In some exemplary embodiments, the periodicity may not be shorter than the further periodicity configured and used when the active downlink BWP for the serving cell is a non-dormant BWP. For example, the periodicity may be a multiple of the further periodicity. As an example, if the further periodicity is 100 ms, the periodicity may be 200 ms. It should be noted that the periodicity may be any suitable integer multiple of the further periodicity. In some exemplary embodiments, the configuration may indicate an explicit periodicity value, e.g., 200 ms. Alternatively, the configuration may indicate a multiplier. For example, if the configuration indicates 2 and the further periodicity is 100 ms, the periodicity means that it is 2 hours longer than the further periodicity, i.e., 200 ms. In this way, overlapping configurations of UL BWPs are avoided.

[0077] In other exemplary embodiments, the configuration may indicate an offset that may be used to obtain the periodicity. For example, the offset may be rounded up / down to the nearest allowed periodicity value. In some exemplary embodiments, the offset may be an explicit offset value. Alternatively or additionally, the offset may be a multiplier.

[0078] Alternatively, the configuration may indicate a target UL BWP for transmitting channel information when the active DL BWP for the serving cell is a dormant BWP. In some exemplary embodiments, the target UL BWP may be linked to one of the SRS / CSI configurations (i.e., CSI / SRS resource sets) configured for the UL BWP of terminal device 110-1.

[0079] The periodicity may be configured for a cell group cell. In this situation, the periodicity may be common for all serving cells in the cell group configured with a dormant BWP. Alternatively, the periodicity may be configured for each UL BWP of the serving cell. In other words, the periodicity of the UL BWP may be different for active DL BWPs during a dormant BWP. Thus, SRS transmission is performed while the DL is on a dormant BWP only if the corresponding UL BWP is active (i.e., such additional periodicity may not be configured for each UL BWP). Also, resource sets for transmitting channel information may be configured with different periodicities. For example, the periodicity may be configured for each resource set. In other exemplary embodiments, the periodicity may be configured for each dormant BWP. For example, different dormant DL BWPs may correspond to different UL BWP periodicities.

[0080] In block 520, the second device 120 determines that the active DL BWP is a dormant BWP. For example, if there are four DL BWPs, one of the DL BWPs may be configured as a dormant BWP. As an example, the first DL BWP may be a dormant BWP. If the active DL BWP is the first DL BWP, the active DL BWP is determined to be a dormant BWP. In some exemplary embodiments, the network device 120 may switch to a new DL BPW and determine the new DL BPW to be a dormant BWP. For example, if the first DL BWP is pre-configured as a dormant BWP and the first DL BWP is the active DL BWP, the second device 120 may determine that the active DL BWP is a dormant BWP. In some exemplary embodiments, the second device 120 may send a command or configuration to the first device 110-1 to move to a dormant UL BWP.

[0081] In block 530, the second device 120 receives channel information from the first device 110-1. For example, the channel information may be transmitted on the current UL BWP with periodicity. Alternatively, the second device 120 may receive the channel information on a target UL BWP.

[0082] In some exemplary embodiments, a first apparatus (e.g., first device 110) capable of performing any of methods 400 may comprise means for performing each operation of method 400. The means may be embodied in any suitable form. For example, the means may be embodied in a circuit or a software module. The first device may be implemented as or included within first device 110. In some exemplary embodiments, the means may comprise at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to cause performance of the apparatus using the at least one processor.

[0083] In some demonstrative embodiments, an apparatus comprises means, at a first device, for receiving from a second device a configuration for transmitting channel information indicating a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) of a serving cell is a dormant bandwidth portion, means for determining whether an active downlink BWP of the serving cell is a dormant bandwidth portion, and means for transmitting the channel information to the second device with the periodicity according to a determination that the active downlink BWP is the dormant bandwidth portion.

[0084] In some exemplary embodiments, the periodicity is different from the further periodicity configured and used when the active downlink BWP of the serving cell is not a dormant BWP.

[0085] In some exemplary embodiments, the periodicity is a multiple of a further periodicity that is configured and used when the active downlink BWP of the serving cell is not a dormant BWP.

[0086] In some exemplary embodiments, the channel information is at least one of an uplink reference signal or a channel state information report.

[0087] In some exemplary embodiments, the periodicity is configured at least one of: per cell group that is common for all serving cells in said cell group configured with a dormant BWP; per serving cell; per uplink bandwidth portion cell of the serving cell; per resource set cell for transmitting channel information; per dormant bandwidth portion.

[0088] In some demonstrative embodiments, the means for transmitting the channel information to the second device comprises means for obtaining the periodicity from the configuration, means for applying the periodicity to the current uplink bandwidth portion, and means for transmitting the channel information to the current uplink bandwidth portion.

[0089] In some demonstrative embodiments, the means for transmitting the channel information to the second device comprises means for obtaining an offset from the configuration, means for determining a periodicity based on the offset and further periodicity configured for transmitting the channel information when an active downlink BWP for the serving cell is on a non-dormant bandwidth portion, means for applying the periodicity on a current uplink bandwidth portion, and means for transmitting the channel information on the current uplink bandwidth portion.

[0090] In some exemplary embodiments, the offset comprises at least one of a multiplier or an explicit offset value.

[0091] In some demonstrative embodiments, the means for transmitting channel information to the second device comprises means for obtaining a target uplink bandwidth portion for transmitting channel information from the configuration when the active downlink BWP for the serving cell is a dormant bandwidth portion, means for switching from the current uplink bandwidth portion to the target uplink bandwidth portion according to a determination that the current uplink bandwidth portion is different from the target uplink bandwidth portion, means for applying a channel information configuration of the current uplink bandwidth portion on the target uplink bandwidth portion and / or means for applying periodicity on the target uplink bandwidth portion, and means for transmitting channel information on the target uplink bandwidth portion.

[0092] In some demonstrative embodiments, the means for transmitting channel information to the second device comprises means for receiving a medium access control, MAC, control element, CE from the second device indicating a configuration of resources for transmitting the channel information when an active downlink BWP for the serving cell is in a dormant bandwidth portion, and means for transmitting the channel information to the second device using the configuration of resources.

[0093] In some exemplary embodiments, the first device comprises a terminal device and the second device comprises a network device.

[0094] In some exemplary embodiments, a second apparatus (e.g., second device 120) capable of performing any of methods 500 may comprise means for performing each operation of method 500. The means may be implemented in any suitable form. For example, the means may be implemented in a circuit or a software module. In some exemplary embodiments, the means may comprise at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to cause the performance of the apparatus using the at least one processor. The second device may be implemented as or included within second device 120.

[0095] In some demonstrative embodiments, an apparatus comprises means for transmitting a configuration for transmitting channel information at a second device and to a first device, the configuration indicating a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) of a serving cell is a dormant bandwidth portion; means for determining an active downlink BWP for the serving cell; and means for periodically receiving the channel information to the second device.

[0096] In some exemplary embodiments, the periodicity is different from the further periodicity configured and used when the active downlink BWP of the serving cell is not a dormant BWP.

[0097] In some exemplary embodiments, the periodicity is a multiple of a further periodicity that is configured and used when the active downlink BWP of the serving cell is not a dormant BWP.

[0098] In some exemplary embodiments, the channel information is at least one of an uplink reference signal or a channel state information report.

[0099] In some exemplary embodiments, the periodicity is configured at least one of per cell group that is common for all serving cells in a cell group configured with a dormant BWP, per serving cell, per uplink bandwidth portion of the serving cell, per resource set for transmitting channel information, or per dormant bandwidth portion.

[0100] In some exemplary embodiments, the means for transmitting a configuration comprises means for transmitting a configuration indicating an explicit periodicity.

[0101] In some exemplary embodiments, the means for transmitting the configuration comprises means for transmitting the configuration indicating the offset to a further periodicity configured to transmit channel information when the downlink used by the second device is on a non-dormant bandwidth portion, the periodicity being determined based on the offset and the further periodicity.

[0102] In some exemplary embodiments, the offset comprises at least one of a multiplier or an explicit offset value.

[0103] In some demonstrative embodiments, the means for transmitting the configuration comprises means for transmitting a configuration indicating a target uplink bandwidth portion for transmitting channel information when the downlink used by the second device is on a dormant bandwidth portion.

[0104] In some exemplary embodiments, the apparatus further comprises means for transmitting a medium access control, MAC, control element to the first device when an active downlink BWP for the serving cell is a dormant bandwidth portion, the control element indicating a set of resources for transmitting channel information to the first device.

[0105] In some exemplary embodiments, the first device comprises a terminal device and the second device comprises a network device.

[0106] 6 is a simplified block diagram of an apparatus 600 suitable for implementing an exemplary embodiment of the present disclosure. The device 600 may be provided to implement a communications apparatus, such as the first device 110 or the second device 120 as shown in FIG. 1. As shown, the apparatus 600 includes one or more processors 610, one or more memories 620 coupled to the processor 610, and one or more communications modules 640 coupled to the processor 610.

[0107] The communication module 640 is for bidirectional communication. The communication module 640 has one or more communication interfaces to facilitate communication with one or more other modules or devices. The communication interface may represent any interface necessary for communication with other network elements. In some exemplary embodiments, the communication module 640 may include at least one antenna.

[0108] The processor 610 may be of any type suitable for a local technology network; Non-limiting examples may include one or more of a general purpose computer, a special purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. The device 600 may have multiple processors, such as application specific integrated circuit chips that are time-slaved to a clock that synchronizes the main processor.

[0109] The memory 620 may include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memories include, but are not limited to, read-only memory (ROM) 624, electrically programmable read-only memory (EPROM), flash memory, hard disks, compact disks (CDs), digital video disks (DVDs), optical disks, laser disks, and other magnetic and / or optical memories. Examples of volatile memories include, but are not limited to, random access memory (RAM) 622, and other volatile memories that do not last during a power period.

[0110] The computer program 630 includes computer executable instructions that are executed by the associated processor 610. The program 630 may be stored in a memory, for example, in the ROM 624. The processor 610 may load the program 630 into the RAM 622 to perform any suitable operations and processes.

[0111] The exemplary embodiment of the present disclosure may be implemented by means of a program 630 such that the apparatus 600 can execute any process of the present disclosure described in relation to Figures 2 to 5. The exemplary embodiment of the present disclosure may also be implemented by hardware or a combination of software and hardware.

[0112] In some exemplary embodiments, the program 630 may be tangibly included in a computer-readable medium that may be included in the device 600 (such as memory 620) or other storage device accessible by the device 600. The apparatus 600 may load the program 630 from the computer-readable medium into RAM 622 for execution. The computer-readable medium may include any type of tangible non-volatile memory, such as ROM, EPROM, flash memory, hard disks, CDs, DVDs, and other magnetic and / or optical storage. Figure 7 shows an example of a computer-readable medium 700 in the form of an optical storage disk. The computer-readable medium has the program 630 stored thereon.

[0113] Generally, various embodiments of the present disclosure may be implemented in hardware or dedicated circuits, software, logic, or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device. Although various aspects of the embodiments of the present disclosure are illustrated and described as block diagrams, flow charts, or using some other pictorial representations, it should be understood that the blocks, devices, systems, techniques, or methods described herein may be implemented in, by way of non-limiting examples, hardware, software, firmware, dedicated circuits or logic, general-purpose hardware or controller, or other computing device, or some combination thereof.

[0114] 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, that execute on a target physical or virtual processor device to perform any of the methods described above with reference to Figures 3-8. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split among program modules as desired in various aspects. Machine-executable instructions for program modules may be executed in local or distributed devices. In a distributed device, program modules may be located in both local and remote storage media.

[0115] The program codes for carrying out the 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, a special purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program codes cause the processor or controller to implement the functions / operations specified in the flowcharts and / or block diagrams. The program codes may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine, partially on a remote machine, or entirely on a remote machine or server.

[0116] In the context of the present disclosure, computer program code or associated data may be carried by any suitable carrier to enable a device, apparatus, or processor to perform the various processes and operations described above. Examples of carriers include signals, computer readable media, etc.

[0117] The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the above. More specific examples of the computer-readable storage medium include an electrical connection with 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 disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0118] Furthermore, although operations are depicted in a particular order, this should not be understood as requiring such operations to be performed in the particular order depicted, or in sequential order, or that all depicted operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Similarly, while some specific implementation details are included in the above description, these should not be construed as limitations on the scope of the 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 be implemented in multiple embodiments separately or in any suitable combination.

[0119] 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, as 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 first device comprising at least one processor and at least one memory including computer program code, the at least one memory and the computer program code being transmitted to the first device using the at least one processor to: receiving, from a second device, a configuration for transmitting channel information, where the configuration indicates a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) for a serving cell is a dormant bandwidth portion; determining whether an active downlink BWP for a serving cell is a dormant bandwidth portion; and transmitting the channel information to the second device with the periodicity in accordance with the determination that the active downlink BWP is the idle bandwidth portion. It is configured as follows: the configuration indicating at least one of activating or deactivating one or more sets of resources including semi-persistent resources for the idle bandwidth portion for transmitting the channel information; The channel information includes a channel state information report. The periodicity is configured per serving cell. A first device, The first device is obtaining the periodicity from the configuration; and applying said periodicity to a current uplink bandwidth portion; transmitting the channel information on the current uplink bandwidth portion; transmitting the channel information to the second device by First device.

2. The first device of claim 1 , wherein the periodicity is different from a further periodicity configured and used when the active downlink BWP for the serving cell is not a dormant BWP.

3. The first device of claim 1 , wherein the periodicity is a multiple of a further periodicity that is configured and used when the active downlink BWP for the serving cell is not a dormant BWP.

4. The first device of claim 1 , wherein the channel information is at least one of an uplink reference signal and a channel state information report.

5. The periodicity is For each cell group cell that is common to all serving cells in a cell group configured with a dormant BWP, Per serving cell, Per uplink bandwidth fractional cell of the serving cell, For a resource set cell for transmitting the channel information, For each idle bandwidth fractional cell, In at least one of the following: The first device of claim 1 .

6. The first device is obtaining an offset from the configuration; determining the periodicity based on the offset and a further periodicity configured for transmitting the channel information when the active downlink BWP for the serving cell is on a non-dormant bandwidth portion; applying said periodicity to a current uplink bandwidth portion; transmitting channel information on the current uplink bandwidth portion; transmitting the channel information to the second device by The first device of claim 1 .

7. The first device of claim 6 , wherein the offset comprises at least one of a multiplier or an explicit offset value.

8. The first device is obtaining, from the configuration, a target uplink bandwidth portion for transmitting the channel information when the active downlink BWP for the serving cell is the dormant bandwidth portion; switching from the current uplink bandwidth portion to the target uplink bandwidth portion in accordance with a determination that the current uplink bandwidth portion is different from the target uplink bandwidth portion; applying a channel information configuration of the current uplink bandwidth portion to the target uplink bandwidth portion and / or applying the periodicity to the target uplink bandwidth portion; transmitting channel information over the target uplink bandwidth portion; transmitting the channel information to the second device by The first device of claim 1 .

9. The first device is receiving from the second device a medium access control (MAC), a control element (CE), indicating a set of resources for transmitting the channel information when the active downlink BWP for the serving cell is the dormant bandwidth portion; transmitting the channel information to the second device using the set of resources; transmitting the channel information to the second device by The first device of claim 1 .

10. the first device comprises a terminal device; the second device comprises a network device; The first device of claim 1 .

11. a second device comprising at least one processor and at least one memory containing computer program code, The at least one memory and the computer program code are configured to cause the second device, using the at least one processor, to: causing a configuration to be transmitted to a first device for transmitting channel information, where the configuration indicates a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) for a serving cell is a dormant bandwidth portion; determining that the active downlink BWP for the serving cell is the dormant bandwidth portion; receiving the channel information to the second device having the periodicity. It is configured as follows: the configuration indicating at least one of activating or deactivating one or more sets of resources including semi-persistent resources for the idle bandwidth portion for transmitting the channel information; The channel information includes a channel state information report. The periodicity is configured per serving cell. a second device, The second device is transmitting the configuration indicating an offset to a further periodicity configured for transmitting the channel information, the periodicity being determined based on the offset and the further periodicity when the downlink used by the second device is on a non-dormant bandwidth portion; transmitting said configuration by Second device.

12. The second device of claim 11 , wherein the periodicity is different from a further periodicity configured and used when the active downlink BWP for the serving cell is not a dormant BWP.

13. The second device of claim 11 , wherein the periodicity is a multiple of a further periodicity that is configured and used when the active downlink BWP for the serving cell is not a dormant BWP.

14. The second device of claim 11 , wherein the channel information is at least one of an uplink reference signal and a channel state information report.

15. The periodicity is For a cell group that is common to all serving cells in a cell group configured with a dormant BWP, Per serving cell, Per uplink bandwidth fractional cell of the serving cell, For each resource set cell for transmitting channel information, For the pause bandwidth portion, At least one of the following: The second device according to claim 11.

16. The second device of claim 11 , wherein the second device transmits the configuration by transmitting the configuration indicating an explicit periodicity.

17. The second device of claim 11 , wherein the offset comprises at least one of a multiplier or an explicit offset value.

18. The second device is transmitting the configuration by transmitting the configuration indicating a target uplink bandwidth portion for transmitting the channel information when the downlink used by the second device is on a dormant bandwidth portion. The second device according to claim 11.

19. The second device further comprises: sending, to the first device, a medium access control (MAC), control element (CE), indicating a set of resources for transmitting the channel information when the active downlink BWP of the serving cell is the dormant bandwidth portion; The second device according to claim 11.

20. the first device comprises a terminal device; the second device comprises a network device; The second device according to claim 11.

21. receiving, at a first device, a configuration for transmitting channel information from a second device, the configuration indicating a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) for a serving cell is a dormant bandwidth portion; determining whether the active downlink BWP for the serving cell is the dormant bandwidth portion; transmitting the channel information to the second device with the periodicity in accordance with a determination that the active downlink BWP is the dormant bandwidth portion; A method comprising: the configuration indicating at least one of activating or deactivating one or more sets of resources including semi-persistent resources for the idle bandwidth portion for transmitting the channel information; The channel information includes a channel state information report. The periodicity is configured per serving cell.

1. A method comprising: The step of transmitting the channel information to the second device includes: obtaining the periodicity from the configuration; and applying said periodicity to a current uplink bandwidth portion; transmitting the channel information on the current uplink bandwidth portion; Including, method.

22. The method of claim 21 , wherein the periodicity is different from a further periodicity configured and used when the active downlink BWP for the serving cell is not a dormant BWP.

23. 22. The method of claim 21, wherein the periodicity is a multiple of a further periodicity that is configured and used when the active downlink BWP for the serving cell is not a dormant BWP.

24. 22. The method of claim 21, wherein the channel information is at least one of an uplink reference signal and a channel state information report.

25. The periodicity is For a cell group that is common to all serving cells in a cell group configured with a dormant BWP, Per serving cell, Per uplink bandwidth fractional cell of the serving cell, For each resource set cell for transmitting channel information, For the pause bandwidth portion, 22. The method of claim 21 , comprising at least one of:

26. The step of transmitting the channel information to the second device includes: obtaining an offset from the configuration; determining a periodicity based on the offset and a further periodicity configured for transmitting channel information when the active downlink BWP for the serving cell is on a non-dormant bandwidth portion; applying said periodicity to a current uplink bandwidth portion; transmitting the channel information on the current uplink bandwidth portion; Including, 22. The method of claim 21.

27. 27. The method of claim 26, wherein the offset comprises at least one of a multiplier or an explicit offset value.

28. The step of transmitting the channel information to the second device includes: obtaining, from the configuration, a target uplink bandwidth portion for transmitting the channel information when the active downlink BWP for the serving cell is the dormant bandwidth portion; switching from the current uplink bandwidth portion to the target uplink bandwidth portion in accordance with a determination that the current uplink bandwidth portion is different from the target uplink bandwidth portion; applying a channel information configuration of the current uplink bandwidth portion on the target uplink bandwidth portion and / or applying the periodicity to the target uplink bandwidth portion; transmitting the channel information over the target uplink bandwidth portion; Including, 22. The method of claim 21.

29. The step of transmitting the channel information to the second device includes: receiving a medium access control (MAC), control element (CE) from the second device indicating a set of resources for transmitting the channel information when the active downlink BWP of the serving cell is the dormant bandwidth portion; transmitting the channel information to the second device using the set of resources; Including, 22. The method of claim 21.

30. 22. The method of claim 21, wherein the first device comprises a terminal device and the second device comprises a network device.

31. At a second device, transmitting a configuration for transmitting channel information to a first device, the configuration indicating a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) for a serving cell is a dormant bandwidth portion; determining that the active downlink BWP for the serving cell is the dormant bandwidth portion; receiving the channel information to the second device having the periodicity; The method includes: the configuration indicating at least one of activating or deactivating one or more sets of resources including semi-persistent resources for the idle bandwidth portion for transmitting the channel information; The channel information includes a channel state information report. The periodicity is configured per serving cell.

1. A method comprising: The step of transmitting the configuration includes a step of transmitting the configuration indicating an offset to a further periodicity configured for transmitting the channel information, the periodicity being determined based on the offset and the further periodicity when the downlink used by the second device is on a non-dormant bandwidth portion. method.

32. 32. The method of claim 31, wherein the periodicity is different from a further periodicity configured and used when the active downlink BWP for the serving cell is not a dormant BWP.

33. 32. The method of claim 31, wherein the periodicity is a multiple of a further periodicity that is configured and used when the active downlink BWP for the serving cell is not a dormant BWP.

34. 32. The method of claim 31, wherein the channel information is at least one of an uplink reference signal and a channel state information report.

35. The periodicity is For a cell group that is common to all serving cells in a cell group configured with a dormant BWP, Per serving cell, Per uplink bandwidth fractional cell of the serving cell, For a resource set cell for transmitting the channel information, For the pause bandwidth portion, In at least one of the following:

32. The method of claim 31 .

36. 32. The method of claim 31, wherein the step of transmitting a configuration comprises transmitting the configuration indicating an explicit periodicity.

37. the offset comprises at least one of a multiplier or an explicit offset value; 32. The method of claim 31 .

38. 32. The method of claim 31, wherein transmitting the configuration comprises transmitting the configuration indicating a target uplink bandwidth portion for transmitting the channel information when a downlink used by the second device is on a dormant bandwidth portion.

39. 32. The method of claim 31, further comprising: transmitting to the first device a medium access control, MAC, control element, CE, indicating a set of resources for transmitting the channel information when the active downlink BWP of the serving cell is the dormant bandwidth portion.

40. the first device comprises a terminal device; the second device comprises a network device; 32. The method of claim 31 .

41. Means for receiving, at a first device, a configuration for transmitting channel information from a second device, the configuration indicating a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) for a serving cell is a dormant bandwidth portion; and means for determining whether the active downlink BWP for the serving cell is the dormant bandwidth portion; means for transmitting the channel information to the second device having the periodicity in accordance with a determination that the active downlink BWP is the dormant bandwidth portion; An apparatus comprising: the configuration indicating at least one of activating or deactivating one or more sets of resources including semi-persistent resources for the idle bandwidth portion for transmitting the channel information; The channel information includes a channel state information report. The periodicity is configured per serving cell. An apparatus comprising: The means for transmitting the channel information to the second device comprises: means for obtaining the periodicity from the configuration; means for applying said periodicity to a current uplink bandwidth portion; means for transmitting the channel information on the current uplink bandwidth portion; Including, Device.

42. Means, at a second device, for transmitting a configuration for transmitting channel information to the first device, the configuration indicating a periodicity for transmitting the channel information when an active downlink bandwidth portion (BWP) for a serving cell is a dormant bandwidth portion; and means for determining that an active downlink BWP for the serving cell is the dormant bandwidth portion; means for receiving the channel information to the second device having the periodicity; An apparatus comprising: the configuration indicating at least one of activating or deactivating one or more sets of resources including semi-persistent resources for the idle bandwidth portion for transmitting the channel information; The channel information includes a channel state information report. The periodicity is configured per serving cell. An apparatus comprising: The means for transmitting the configuration includes means for transmitting the configuration indicating an offset to a further periodicity configured for transmitting the channel information, the periodicity being determined based on the offset and the further periodicity when a downlink used by the second device is on a non-idle bandwidth portion. Device.

43. A computer program comprising program instructions for causing an apparatus to carry out a method according to any one of claims 21 to 30.

44. A computer program comprising program instructions for causing an apparatus to carry out a method according to any one of claims 31 to 40.

Images