WO2019101299A1

WO2019101299A1 - Method for efficient measurement gap offset signaling

Info

Publication number: WO2019101299A1
Application number: PCT/EP2017/079952
Authority: WO
Inventors: Jarkko Tuomo Koskela; Lars Dalsgaard
Original assignee: Nokia Technologies Oy
Priority date: 2017-11-21
Filing date: 2017-11-21
Publication date: 2019-05-31

Abstract

Methods and apparatus for ensuring that measurement gap matches to the reference symbols for which the measurement gap was originally meant for in instances in which numerology changes are disclosed. A method includes accessing, by a network device, information regarding particular bandwidth parts (BWPs) configured for a user device; configuring a single selection from a plurality of distinct possible types corresponding to offset value ranges; and choosing a particular offset value range from the plurality of offset value ranges that matches with an offset value range for the BWP with longest slot configuration. A method includes identifying at least one BWP for a user device; and configuring a measurement gap configuration for the at least one particular BWP, wherein the measurement gap configuration is optimal for that BWP sub carrier spacing (SCS) choice structure and allows to use optimal value range for offset.

Description

METHOD FOR EFFICIENT MEASUREMENT GAP OFFSET SIGNALING

TECHNICAL FIELD:

[0001] The teachings in accordance with the exemplary embodiments of this invention relate generally to signalling in radio systems, in particular to bandwidth in wideband carriers.

BACKGROUND:

[0002] In NR, the concept of bandwidth part (BWP) denotes that each user equipment (UE) may operate on different bandwidth part within a single wideband carrier. BWP is defined in 3rd Generation Partnership Project (3GPP) Technical Specification (TS) 38.211 VI.0.0 (section 4.4.5) as a contiguous subset of the physical resource blocks for a given numerology on a given carrier. In contrast to preceding 3GPP systems, where system bandwidth was cell- specific, bandwidth parts may be configured specifically for particular UEs only using dedicated signalling from gNB and may, for example, depend on UE’s capabilities.

[0003] According to current development of NR system and current agreements in 3GPP BWP may operate with or without Synchronization Signal (SS) block, which is used to carry NR-SS (Synchronization Signal) as well as MIB (Master Information Block) and physical cell identity (PCI). One of the main drivers of introducing BWPs was to be able to support UEs with limited capabilities (in terms of Tx/Rx bandwidth) even on a wideband carrier deployed from system perspective. Basic rules for bandwidth operation include that“A UE configured for operation in bandwidth parts (BWPs) of a serving cell, is configured by higher layers for the serving cell a set of bandwidth parts (BWPs) for receptions by the UE (DL BWP set) or a set of BWPs for transmissions by the UE (UL BWP set).” 3GPP TS 38.213 VI.0.0 (section 11). Based on the agreements made by 3GPP RAN1 Working Group, higher layer signalling denotes dedicated RRC signalling in this instance.

BRIEF SUMMARY

[0004] This section is intended to include examples and is not intended to be limiting.

[0005] In an example of an embodiment, a method is disclosed that includes accessing, by a network device, information regarding particular bandwidth parts (BWPs) configured for a user device; configuring a single selection from a plurality of distinct possible types corresponding to offset value ranges; and choosing a particular offset value range from the plurality of offset value ranges that matches with an offset value range for the BWP with longest slot configuratio.

[0006] An example of an apparatus comprising at least one processor; and at least one non-transitory memory including computer program code, the at least one memory and the computer program code may be configured to, with the at least one processor, cause the apparatus to: access information regarding particular bandwidth parts (BWPs) configured for at least one user device; configure a CHOICE structure for offsets; and choose the offset which matches with offset for the BWP with longest slot configuration to ensure timing of measurement gap does not change.

[0007] In an example of an embodiment, a method is disclosed that includes comprising identifying at least one particular bandwidth part (BWP) for at least one user device; and configuring a measurement gap configuration for the at least one particular BWP, wherein the measurement gap configuration is optimal for that BWP sub carrier spacing (SCS) choice stmcture and allows to use optimal value range for offset.

[0008] An example of an apparatus comprising at least one processor; and at least one non-transitory memory including computer program code, the at least one memory and the computer program code may be configured to, with the at least one processor, cause the apparatus to: identify at least one particular bandwidth part (BWP) for at least one user device; and configure a measurement gap configuration for the at least one particular B WP, wherein the measurement gap configuration is optimal for that BWP sub carrier spacing (SCS) choice stmcture and allows to use optimal value range for offset.

[0009] In an example of an embodiment, a method is disclosed that includes comprising identifying at least one particular configured bandwidth part (BWP) for at least one user device; and interpreting offset configuration based on the at least one particular configured BWP .

[0010] An example embodiment may be provided in an apparatus comprising at least one processor; and at least one non-transitory memory including computer program code, the at least one memory and the computer program code may be configured to, with the at least one processor, cause the apparatus to: identify at least one particular configured bandwidth part (BWP) for at least one user device; and interpret offset configuration based on the at least one particular configured BWP.

[0011] Certain abbreviations that may be found in the description and/or in the

Figures are herewith defined as follows:

CE Control Element

CQI Channel quality indicator

CSI Channel status information

DCI Downlink Control Information

DL Downlink

DMRS Demodulation Reference Signal

gNB 5G Enhanced Node B (Base station)

LTE long term evolution

MAC Medium access control

MEC multi-access edge computing

MME mobility management entity

NCE network control element NR New radio

NR-PDCCH New radio Physical Downlink Control Channel

N/W Network

Pcell Primary Cell

PScell Primary Scell

RE Resource Element

RF Radio Frequency

RRC Radio Resource Control

RS Reference Signal

RSRP Reference Signal Received Power

Scell Secondary Cell

SCS Sub- Carrier Spacing

ss Synchronization Signal

TXRU Transceiver Unit

UE User Equipment

UL Uplink

5G Fifth generation mobile communication system

BRIEF DESCRIPTION OF THE DRAWINGS:

[0012] The foregoing and other aspects of embodiments of this invention are made more evident in the following Detailed Description, when read in conjunction with the attached Drawing Figures, wherein:

[0013] Fig. 1 is a block diagram of one possible and non- limiting example system in which the example embodiments may be practiced;

[0014] Fig. 2 shows a functional block diagram of a network device; and

[0015] Fig. 3 shows a method in accordance with example embodiments which may be performed by an apparatus.

DET AIDED DESCRIPTION:

[0016] In the example embodiments as described herein a method and apparatus ensuring that measurement gap matches to the reference symbols for which the measurement gap was originally meant for in instances in which numerology changes.

[0017] Turning to Fig. 1, this figure shows a block diagram of one possible and non- limiting example system in which the example embodiments may be practiced. In Fig. 1 , a user equipment (UE) 110 is in wireless communication with a wireless network 100. A UE is a wireless, typically mobile device that can access a wireless network. The UE 110 includes one or more processors 120, one or more memories 125, and one or more transceivers 130 interconnected through one or more buses 127. Each of the one or more transceivers 130 includes a receiver, Rx, 132 and a transmitter, Tx, 133. The one or more buses 127 may be address, data, or control buses, and may include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optics or other optical communication equipment, and the like. The one or more transceivers 130 are connected to one or more antennas 128. The one or more memories 125 include computer program code 123. The UE 110 includes a signaling module 140, comprising one of or both parts 140-1 and/or 140-2, which may be implemented in a number of ways. The signaling module 140 may be implemented in hardware as signaling module 140-1, such as being implemented as part of the one or more processors 120. The signaling module 140-1 may be implemented also as an integrated circuit or through other hardware such as a programmable gate array. In another example, the signaling module 140 may be implemented as signaling module 140-2, which is implemented as computer program code 123 and is executed by the one or more processors 120. For instance, the one or more memories 125 and the computer program code 123 may be configured to, with the one or more processors 120, cause the user equipment 110 to perform one or more of the operations as described herein. The UE 110 communicates with eNB 170 via a wireless link 111.

[0018] The gNB (NR/5G Node B but possibly an evolved NodeB) 170 is a base station (e.g., for LTE, long term evolution) that provides access by wireless devices such as the UE 110 to the wireless network 100. The gNB 170 includes one or more processors 152, one or more memories 155, one or more network interfaces (N/W EF(s)) 161, and one or more transceivers 160 interconnected through one or more buses 157. Each of the one or more transceivers 160 includes a receiver, Rx, 162 and a transmitter, Tx, 163. The one or more transceivers 160 are connected to one or more antennas 158. The one or more memories 155 include computer program code 153. The gNB 170 includes a report module 150, comprising one of or both parts 150-1 and/or 150-2, which may be implemented in a number of ways. The report module 150 may be implemented in hardware as report module 150-1, such as being implemented as part of the one or more processors 152. The report module 150-1 may be implemented also as an integrated circuit or through other hardware such as a programmable gate array. In another example, the report module 150 may be implemented as report module 150-2, which is implemented as computer program code 153 and is executed by the one or more processors 152. For instance, the one or more memories 155 and the computer program code 153 are configured to, with the one or more processors 152, cause the gNB 170 to perform one or more of the operations as described herein. The one or more network interfaces 161 communicate over a network such as via the links 176 and 131. Two or more gNBs 170 communicate using, e.g., link 176. The link 176 may be wired or wireless or both and may implement, e.g., an X2 interface.

[0019] The one or more buses 157 may be address, data, or control buses, and may include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optics or other optical communication equipment, wireless channels, and the like. For example, the one or more transceivers 160 may be implemented as a remote radio head (RRF1) 195, with the other elements of the gNB 170 being physically in a different location from the RRF1, and the one or more buses 157 could be implemented in part as fiber optic cable to connect the other elements of the gNB 170 to the RRH 195.

[0020] It is noted that description herein indicates that“cells” perform functions, but it should be clear that the gNB 170 that forms the cell will perform the functions. The cell makes up part of a gNB 170. That is, there can be multiple cells per gNB 170.

[0021] The wireless network 100 may include a network control element (NCE)

190 that may include MME (Mobility Management Entity )/S GW (Serving Gateway) functionality, and which provides connectivity with a further network, such as a telephone network and/or a data communications network (e.g., the Internet). The gNB 170 is coupled via a link 131 to the NCE 190. The link 131 may be implemented as, e.g., an Sl interface. The NCE 190 includes one or more processors 175, one or more memories 171, and one or more network interfaces (N/W EF(s)) 180, interconnected through one or more buses 185. The one or more memories 171 include computer program code 173. The one or more memories 171 and the computer program code 173 are configured to, with the one or more processors 175, cause the NCE 190 to perform one or more operations. [0022] The wireless network 100 may implement network virtualization, which is the process of combining hardware and software network resources and network functionality into a single, software-based administrative entity, a virtual network. Network virtualization involves platform virtualization, often combined with resource virtualization. Network virtualization is categorized as either external, combining many networks, or parts of networks, into a virtual unit, or internal, providing network-like functionality to software containers on a single system. Note that the virtualized entities that result from the network virtualization are still implemented, at some level, using hardware such as processors 152 or 175 and memories 155 and 171, and also such virtualized entities create technical effects.

[0023] The computer readable memories 125, 155, and 171 may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory. The computer readable memories 125, 155, and 171 may be means for performing storage functions. The processors 120, 152, and 175 may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on a multi-core processor architecture, as non limiting examples. The processors 120, 152, and 175 may be means for performing functions, such as controlling the UE 110, gNB 170, and other functions as described herein.

[0024] In general, the various embodiments of the user equipment 110 can include, but are not limited to, cellular telephones such as smart phones, tablets, personal digital assistants (PDAs) having wireless communication capabilities, portable computers having wireless communication capabilities, image capture devices such as digital cameras having wireless communication capabilities, gaming devices having wireless communication capabilities, music storage and playback appliances having wireless communication capabilities, Internet appliances permitting wireless Internet access and browsing, tablets with wireless communication capabilities, as well as portable units or terminals that incorporate combinations of such functions.

[0025] Embodiments herein may be implemented in software (executed by one or more processors), hardware (e.g., an application specific integrated circuit), or a combination of software and hardware. In an example of an embodiment, the software (e.g., application logic, an instruction set) is maintained on any one of various conventional computer-readable media. In the context of this document, a“computer- readable medium” may be any media or means that can contain, store, communicate, propagate or transport the instructions for use by or in connection with an instruction execution system, apparatus, or device, such as a computer, with one example of a computer described and depicted, e.g., in Fig. 1. A computer-readable medium may comprise a computer-readable storage medium or other device that may be any media or means that can contain or store the instructions for use by or in connection with an instruction execution system, apparatus, or device, such as a computer.

[0026] Having thus introduced one suitable but non-limiting technical context for the practice of the example embodiments of this invention, the example embodiments will now be described with greater specificity.

[0027] Fig. 2 illustrates a functional block diagram of a network device 200. As shown in Fig. 2, network device 200 includes a BWP configuration module 210, and an offset determination module 220.

[0028] In instances in which numerology is expected to change, the network 100

(for example, via network device 200) may ensure that measurement gap still“matches” to the reference symbols for which the measurement gap was originally meant for. The network device 200 (for example, including network devices in network 100 described above with respect to Fig. 1, such as gNB 170, NCE/MME/SGW 190, etc.) may implement processes to determine the offset for each BWP.

[0029] Each BWP may have different numerology, for example, a slot length of the cell may change when active BWP changes. The liaison statement (LS) (R4- 1711940) indicates that “Measurement Gap offset should be configurable with granularity based on the maximum slot length of all the UE serving cells which have configured the gap.” NR is synchronous system and therefore it is preferable that measurement gap does not change in time. At 3GPP Radio Access Network (RAN) 2#99 bis it was therefore agreed that one cell individual offset (for example, denoted as celllndividualOffset) in each measurement object (MO) is enough. The example embodiments herein ensure that when numerology changes, the measurement gap still “matches” to the reference symbols for which the measurement gap was originally assigned for (for example, meant for). The example embodiments may be applied in instances in which active BWP changes and simultaneously numerology changes. The example embodiments may enable the system to determine an offset of the gap, for example, how to ensure time synchronization between UE 110 and N/W (for example gNB 170 or other network devices (not shown) in network 100) but still allowing N/W maximal flexibility for scheduling.

[0030] According to a first example embodiment, the network device 200 may access information (for example, via BWP configuration module 210) regarding which BWPs are configured for UE 110 and may configure a single selection from a collection of distinct types (for example, one choice of the CElOICE stmcture) for each value range of the offsets (or offset value range) (one choice for each possible numerology). CElOICE denotes a specific coding word for Abstract Syntax Notification One (ASN.1) which may be used for protocol messages in 3GPP. ParameterA CHOICE {a, b, c} would code a parameter which is named“Parameter” and may take one of three values “a”,“b” or“c” in a message. [0031] The network device 200 may be required to choose (for example, via offset determination module 220) the one offset (for example, a particular offset) based on the BWP with longest slot configuration (for example, smallest SCS). This may ensure that even if BWP numerology changes to smaller slot, the configuration timing of measurement gap does not change (note that a next smaller slot configuration may have half of slot length and consequently synchronization may be guaranteed). For each different slot configuration, the network device 200 (or other device in the network 100, via instmctions) may code different value range for the offset. The network device 200 may then select the value range matching the longest slot configuration.

[0032] According to Rel-l5, there may be at most one active DL BWP and at most one active UL BWP at a given time for a serving cell for a UE 110. The UE 110 is not expected to receive PDSCE1 (Physical Downlink Shared Channel) or PDCCE1 (Physical Downlink Control Channel) outside an active bandwidth part and it shall not transmit PUSCE1 (Physical Uplink Shared Channel) or PUCCE1 (Physical Uplink Control Channel) outside an active bandwidth part (see, 3GPP TS 38.211 Vl.0.0 (section 4.4.5)). Active BWP within a serving cell can be switched for the UE 110 at least using layer 1 signalling from the gNB such as a scheduling DCI.

[0033] For each UE-specific serving cell, one or more DL BWPs and one or more

UL 110 BWPs may be configured by dedicated RRC for a UE 110. NR (for example, in a system such as network 100) may support the case that a single scheduling DCI may switch the UE’ s 110 active BWP from one to another (of the same link direction) within a given serving cell.

[0034] RAN2 (during 3GPP RAN2 #99 bis meeting, 2017) outlines implications of BWP on layers above physical layer, including impacts on UE measurements and configuration thereof. Following agreements with respect to this are were made. Agreements for BWP operation in CONNECTED mode: RRC signalling supports to configure 1 or more BWPs (both for DL BWP and UL BWP) for a serving cell (PCell, PS Cell). RRC signalling supports to configure 0, 1 or more BWPs (both for DL BWP and UL BWP) for a serving cell SCell (at least 1 DL BWP). For a UE, the PCell, PSCell and each SCell has a single associated SSB in frequency (for example, denoted in RAN 1 terminology as the 'cell defining SSB'). Cell defining SS block may be changed by synchronous reconfiguration for PCell/PSCell and SCell release/add for the SCell. Each SS block frequency which needs to be measured by the UE 110 is required to be configured as individual measurement object (for example, one measurement object corresponds to a single SS block frequency). The cell defining SS block may be considered as the time reference of the cell, and for RRM serving cell measurements based on SSB (irrespective of which BWP is activated).

[0035] An MO may be provided to the UE 110 for all carriers on which measurements are to be performed (as in LTE) serving cell. The information provided in reportConfig(s) may be used to derive serving cell measurements. UE 110 may derive what to measure for serving cells using the RS type(s) as identified in the different reportConfig(s). UE 110 may perform serving cell measurements, even if a serving frequency MO is not linked to any reportConfig/measID. As in LTE, UE 110 may perform serving cell measurements for all serving frequencies for all measurement quantities (RSRP and RSRQ. FFS SINR). If a measurement report is triggered, associated to any measurement ID, the UE 110 may include all available measurement results for PCell and configured SCells. One celllndividualOffset in MO is sufficient, there is no requirement for the cell offset in report configuration.

[0036] According to a second example embodiment, for each BWP the network device 200 may configure different measurement gap configuration optimal for that BWP SCS choice structure in measGapConfig (in each BWP configuration) allowing the user device 100 to use optimal value range for offset. This may provide a long enough gap to enable UE 110 to measure appropriate RS, although the configuration of different measurement gap configuration optimal for that BWP SCS choice may not ensure gap configuration not to change (for example, the gap configuration may change however the UE 110 may still measure the appropriate RS). Stated differently, the network 100 may configure different measurement gap configuration for each BWP. The UE 110 may apply the active BWP corresponding to the measurement gap configuration. In these instances, the configuration by the network 100 may ensure that measurement gap matches to the reference symbols for which the measurement gap was originally meant for in instances in which numerology changes.

[0037] The network device 200 may configure a measurement gap configuration for each BWP separately. UE 110 may apply the measurement gap configuration of active BWP. The network device 200 may thereby ensure that an optimal measurement gap configuration is (for example, always or in all instances) applied.

[0038] According to a third example embodiment, the UE 110 may interpret offset configuration depending on configured BWPs. For example, UE 110 may check all the BWPs of the serving cells and the one with longest slot configuration may dictate how offset is interpreted.

[0039] According to this third example embodiment, to the UE 110 may determine how the offset is interpreted. For example, values of offset may be determined so that for different SCS the values mean different things. For example, for 15 kHz SCS first 8 values mean zero offset, next 8 values offset of one etc. Further, for 30 kHz first 4 values mean zero offset, for 60Kh first two values mean zero offset and for 120 kHz only first value means 0 offset. In this manner, a single BWP configuration may handle all different BWPs however this may create deficiencies in keeping measurement gaps time aligned with each BWP configuration as offset value 3 may mean different time offset in case of different SCS.

[0040] The network device 200 may configure gaps differently for different serving cells consistent with RAN4 and provide a capability to indicate whether a UE 110 may support two independent measurement gap configurations for frequency range 1 = <6Ghz bands (FR1) and FR2 (>6Ghz bands). The network device 200 may allow different gaps to be configured for sub 6Ghz bands (different RF structure than for > 6Ghz) than for >6GFlz serving cells. In these instances there may be multiple gap patterns per UE 110 and the network device 200 may determine which of the serving cells BWPs to use for timing reference.

[0041] According to an example embodiment, in order to determine which of the serving cells BWPs to use for timing reference, network device 200 may signal 2 sets of gaps and in each serving cell configuration the network device 200 may indicate for each serving cell which one of the gaps to utilize. This information regarding which serving cell belongs to which particular group may be conveyed to the UE 110. The cells that are part of the“gap” group may be explicitly denoted and then any of above solutions described with respect to the first, second and third example embodiments may be used to indicate how offset is interpreted among the group of cells. Gap groups may be determined based on serving cells corresponding to a frequency range that use a same measurement gap configuration. A gap group corresponds to Serving cells of frequency range 1 belong to group of cells using same measurement gap configuration. Another gap group corresponds to Serving cells of frequency range 2 belong to group of cells using same measurement gap configuration.

[0042] In instances in which there are cell specific measure gaps from initial operation (for example, such as described in Release 14 3GPP (REL 14 LTE)) the network device 200 may indicate which cell share same gaps and again one could use similar solutions as described above with respect to the first, second and third example embodiments may be used for single gap handling. For example, in instances in which there are multiple gap patterns, a same solution may be applied as in instances in which only a single gap has been configured.

[0043] Fig. 3 is an example flow diagram 300 illustrating a method which ensures time synchronization between UE 110 and network 100 (for example, via network device 200) while allowing network 100 maximal flexibility for scheduling. [0044] At block 310, network device 200 may access information regarding which BWPs are configured for UE 110. This may commence a process (or sub process) which may continue until block 330.

[0045] At block 320, network device 200 may configure a CHOICE structure for offsets, for example, one choice for each possible numerology.

[0046] Network device 200 may choose the offset, which matches with the offset for the BWP with longest slot configuration to ensure that the timing (for example, the offset) of measurement gap does not change (at block 330).

[0047] Alternatively to the process described at blocks 310 to 330, at block 340, network device 200 may configure different measurement gap configuration for each BWP, which are optimal for that BWP SCS choice structure allowing the network device 200 to use optimal value range for offset.

[0048] Alternatively to the processes described at blocks 310 to 330 or block 340, at block 350, UE 110 may interpret offset configuration depending on configured BWPs. For example, UE 110 may check all the BWPs of the serving cells and the one with longest slot configuration dictates how offset is interpreted.

[0049] At block 360, according to an example embodiment, the network device

200 may use two set of gaps. The cells may be associated to a“gap” group and the process above (blocks 310 to 330) may be used to indicate how offset is interpreted among the“gap” group of cells.

[0050] At block 370, according to an example embodiment, the network device

200 may use cell specific measurement gaps and may indicate which cell share same gaps and then use the process above (blocks 310 to 330) for single gap handling.

[0051] Without in any way limiting the scope, interpretation, or application of the claims appearing below, a technical effect of one or more of the example embodiments disclosed herein is that a common offset of the gap may be determined for different BWP and time synchronization may be ensured between UE 110 and network 100 while allowing maximum flexibility for scheduling by the network 100.

[0052] An example embodiment may provide a method comprising accessing, by a network device, information regarding particular bandwidth parts (B WPs) configured for at least one user device; configuring a CHOICE stmcture for a plurality of offsets; and choosing an offset from the plurality of offsets that matches with an offset for the BWP with longest slot configuration.

[0053] In accordance with the example embodiments as described in the paragraphs above, associating cells to a gap group; and indicating a process to interpret the offset among the gap group of cells.

[0054] In accordance with the example embodiments as described in the paragraphs above, using cell specific measurement gaps; and indicating at least one cell that shares a same gap and using the example embodiments as described in the paragraphs above for single gap handling.

[0055] In accordance with the example embodiments as described in the paragraphs above, wherein a time synchronization between the at least one user device and the network device is ensured while the network device is enabled maximal flexibility for scheduling.

[0056] An example embodiment may be provided in an apparatus comprising at least one processor; and at least one non-transitory memory including computer program code, the at least one memory and the computer program code may be configured to, with the at least one processor, cause the apparatus to: access information regarding particular bandwidth parts (BWPs) configured for at least one user device; configure a CHOICE structure for offsets; and choose the offset which matches with offset for the BWP with longest slot configuration to ensure timing of measurement gap does not change.

[0057] An example embodiment may provide a method comprising identifying at least one particular bandwidth part (BWP) for at least one user device; and configuring a measurement gap configuration for the at least one particular BWP, wherein the measurement gap configuration is optimal for that BWP sub carrier spacing (SCS) choice structure and allows to use optimal value range for offset.

[0058] An example embodiment may be provided in an apparatus comprising at least one processor; and at least one non-transitory memory including computer program code, the at least one memory and the computer program code may be configured to, with the at least one processor, cause the apparatus to: identify at least one particular bandwidth part (BWP) for at least one user device; and configure a measurement gap configuration for the at least one particular BWP, wherein the measurement gap configuration is optimal for that BWP sub carrier spacing (SCS) choice structure and allows to use optimal value range for offset.

[0059] An example embodiment may provide a method comprising identifying at least one particular configured bandwidth part (BWP) for at least one user device; and interpreting offset configuration based on the at least one particular configured BWP .

[0060] In accordance with the example embodiments as described in the paragraphs above, wherein interpreting the offset configuration further comprises: checking all the BWPs of a plurality of serving cells and a BWP with longest slot configuration to dictate how an offset is to be interpreted.

[0061] An example embodiment may be provided in an apparatus comprising at least one processor; and at least one non-transitory memory including computer program code, the at least one memory and the computer program code may be configured to, with the at least one processor, cause the apparatus to: identify at least one particular configured bandwidth part (BWP) for at least one user device; and interpret offset configuration based on the at least one particular configured BWP. [0062] Embodiments herein may be implemented in software (executed by one or more processors), hardware (e.g., an application specific integrated circuit), or a combination of software and hardware. In an example embodiment, the software (e.g., application logic, an instmction set) is maintained on any one of various conventional computer-readable media. In the context of this document, a“computer-readable medium” may be any media or means that can contain, store, communicate, propagate or transport the instmctions for use by or in connection with an instruction execution system, apparatus, or device, such as a computer, with one example of a computer described and depicted, e.g., in Fig. 1. A computer-readable medium may comprise a computer-readable storage medium (e.g., memories 125, 155, 171 or other device) that may be any media or means that can contain, store, and/or transport the instructions for use by or in connection with an instruction execution system, apparatus, or device, such as a computer. A computer-readable storage medium does not comprise propagating signals.

[0063] If desired, the different functions discussed herein may be performed in a different order and/or concurrently with each other. Furthermore, if desired, one or more of the above-described functions may be optional or may be combined.

[0064] Although various aspects are set out above, other aspects comprise other combinations of features from the described embodiments, and not solely the combinations described above.

[0065] It is also noted herein that while the above describes example embodiments, these descriptions should not be viewed in a limiting sense. Rather, there are several variations and modifications which may be made without departing from the scope of the present invention.

[0066] Although various aspects of the invention are set out in the independent claims, other aspects of the invention comprise other combinations of features from the described embodiments and/or the dependent claims with the features of the independent claims, and not solely the combinations explicitly set out in the claims.

[0067] It is also noted herein that while the above describes example embodiments, these descriptions should not be viewed in a limiting sense. Rather, there are several variations and modifications which may be made without departing from the scope of the present invention as defined in the appended claims.

[0068] In general, the various embodiments may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. For example, 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, although the invention is not limited thereto. While various aspects of the invention may be illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that these 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.

[0069] Embodiments may be practiced in various components such as integrated circuit modules. The design of integrated circuits is by and large a highly automated process. Complex and powerful software tools are available for converting a logic level design into a semiconductor circuit design ready to be etched and formed on a semiconductor substrate.

[0070] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be constmed as preferred or advantageous over other embodiments. All of the embodiments described in this Detailed Description are exemplary embodiments provided to enable persons skilled in the art to make or use the invention and not to limit the scope of the invention which is defined by the claims. [0071] The foregoing description has provided by way of example and non limiting examples a full and informative description of the best method and apparatus presently contemplated by the inventors for carrying out the invention. However, various modifications and adaptations may become apparent to those skilled in the relevant arts in view of the foregoing description, when read in conjunction with the accompanying drawings and the appended claims. However, all such and similar modifications of the teachings of this invention will still fall within the scope of this invention.

[0072] It should be noted that the terms "connected," "coupled," or any variant thereof, mean any connection or coupling, either direct or indirect, between two or more elements, and may encompass the presence of one or more intermediate elements between two elements that are "connected" or "coupled" together. The coupling or connection between the elements can be physical, logical, or a combination thereof. As employed herein two elements may be considered to be "connected" or "coupled" together by the use of one or more wires, cables and/or printed electrical connections, as well as by the use of electromagnetic energy, such as electromagnetic energy having wavelengths in the radio frequency region, the microwave region and the optical (both visible and invisible) region, as several non-limiting and non-exhaustive examples.

[0073] Furthermore, some of the features of the preferred embodiments of this invention could be used to advantage without the corresponding use of other features. As such, the foregoing description should be considered as merely illustrative of the principles of the invention, and not in limitation thereof.

Claims

CLAIMS What is claimed is:

1. A method, comprising:

accessing, by a network device, information regarding particular bandwidth parts (BWPs) configured for at least one user device;

configuring a single selection from a plurality of distinct possible types corresponding to offset value ranges; and

choosing a particular offset value range from the plurality of offset value ranges that matches with an offset value range for the BWP with longest slot configuration.

2. The method of claim 1, further comprising:

associating cells to a gap group; and

indicating a process to interpret the offset among the gap group of cells.

3. The method of any of claims 1 to 2, further comprising:

using cell specific measurement gaps; and

indicating at least one cell that shares a same gap and using the method of claim 1 for single gap handling.

4. The method of any of claims 1 to 3, wherein a time synchronization between the at least one user device and the network device is ensured while the network device is enabled maximal flexibility for scheduling.

5. An apparatus, comprising:

at least one processor; and

at least one non-transitory memory including computer program code, the at least one non-transitory memory and the computer program code configured to, with the at least one processor, cause the apparatus to: access information regarding particular bandwidth parts (BWPs) configured for at least one user device;

configure a single selection from a plurality of distinct possible types corresponding to offset value ranges; and

choose a particular offset value range from the plurality of offset value ranges that matches with an offset value range for the BWP with longest slot configuration.

6. The apparatus of claim 5, where the at least one non-transitory memory and the computer program code are further configured to, with the at least one processor, cause the apparatus to:

associate cells to a gap group; and

indicate a process to interpret the offset among the gap group of cells.

7. The apparatus of any of claims 5 to 6, where the at least one non-transitory memory and the computer program code are further configured to, with the at least one processor, cause the apparatus to:

use cell specific measurement gaps; and

indicate at least one cell that shares a same gap and using the computer program code of claim 5 for single gap handling.

8. A method, comprising:

identifying, by a network device, at least one particular bandwidth part (BWP) for at least one user device; and

configuring a measurement gap configuration for the at least one particular BWP, wherein the measurement gap configuration is optimal for that BWP sub carrier spacing (SCS) choice stmcture and allows the network device to use optimal value range for offset.

9. The method of claim 8, further comprising:

associating cells to a gap group; and

indicating a process to interpret the offset among the gap group of cells.

10. The method of any of claims 8 to 9, further comprising:

using cell specific measurement gaps; and

indicating at least one cell that shares a same gap and using the method of claim 9 for single gap handling.

11. An apparatus , comprising :

at least one processor; and

at least one non-transitory memory including computer program code, the at least one non-transitory memory and the computer program code configured to, with the at least one processor, cause the apparatus to:

identify at least one particular bandwidth part (BWP) for at least one user device; and

configure a measurement gap configuration for the at least one particular BWP, wherein the measurement gap configuration is optimal for that BWP sub carrier spacing (SCS) choice stmcture and allows the apparatus to use optimal value range for offset.

12. The apparatus of claim 11, where the at least one non-transitory memory and the computer program code are further configured to, with the at least one processor, cause the apparatus to:

associate cells to a gap group; and

indicate a process to interpret the offset among the gap group of cells.

13. The apparatus of any of claims 11 to 12, where the at least one non-transitory memory and the computer program code are further configured to, with the at least one processor, cause the apparatus to:

use cell specific measurement gaps; and

indicate at least one cell that shares a same gap and using the computer program code of claim 11 for single gap handling.

14. A method, comprising:

identifying at least one particular configured bandwidth part (BWP) for at least one user device; and

interpreting offset configuration based on the at least one particular configured

BWP.

15. The method of claim 14, wherein interpreting the offset configuration further comprises:

checking all the BWPs of a plurality of serving cells and a BWP with longest slot configuration to dictate how an offset is to be interpreted.

16. The method of any of claims 14 to 15, further comprising:

associating cells to a gap group; and

indicating a process to interpret the offset among the gap group of cells.

17. The method of any of claims 14 to 16, further comprising:

using cell specific measurement gaps; and

indicating at least one cell that shares a same gap and using the method of claim 14 for single gap handling.

18. An apparatus, comprising:

at least one processor; and

identify at least one particular configured bandwidth part (BWP) for at least one user device; and

interpret offset configuration based on the at least one particular configured

BWP.

19. The apparatus of claim 18, wherein, when interpreting the offset configuration the at least one non-transitory memory and the computer program code are further configured to, with the at least one processor, cause the apparatus to:

check all the BWPs of a plurality of serving cells and a BWP with longest slot configuration to dictate how an offset is to be interpreted.

20. A non-transitory computer readable medium encoded with instructions that, when executed by a computer, cause performance of a method according to any of claims 1- 4, 8-10 and 14-17.