Method and apparatus for selectively decoding physical downlink control candidates based on determined frequency locations and frequency hopping

Abstract

A method and apparatus are provided in which information of frequency domain resources of a control resource set of an active downlink bandwidth part and information of a search space set associated with the control resource set are received (302). A frequency location of the control resource set is determined (304) at a physical downlink control channel monitoring occasion of the search space set based on the information of the frequency domain resources and information of frequency hopping of the control resource set. A blind decoding of a physical downlink control channel candidate is performed (306) based on the determined frequency location of the control resource set at the physical downlink control channel monitoring occasion.

Description

Technical Field

[0001] This disclosure relates to selectively decoding physical downlink control channel candidates based on determined frequency locations of a control resource set and determined information from frequency hopping, including instances where the determined frequency locations are associated with a specific active downlink bandwidth portion. Background Technology

[0002] Currently, user equipment, such as wireless communication devices, uses wireless signals to communicate with other communication devices within a network environment that can include one or more cells. Within these cells, various communication connections with the network and other devices operating within it are supported. A network environment typically involves one or more sets of standards, each defining aspects of any communication connection made when the corresponding standard is used within the network environment. Examples of standards under development and / or existing standards include New Radio Access Technology (NR), Long Term Evolution (LTE), Universal Mobile Telecommunications Service (UMTS), Global System for Mobile Communications (GSM), and / or Enhanced Data GSM Environment (EDGE).

[0003] As part of network communication, user equipment (UE) does not always know when it will receive incoming communication from the network. Furthermore, actively monitoring UE's incoming communication can involve keeping certain parts of electronic circuitry active, where the corresponding circuitry may require a significant amount of power to maintain its activity.

[0004] As a way to help save power, various forms of discontinuous reception modes have been implemented that seek to limit the duration for which user equipment (UE) needs to actively monitor incoming communications. This can sometimes involve limiting the time periods during which UE actively monitors incoming communications. These time periods are usually known to the network, allowing attempts to contact UE via the network to be limited to one of these pre-determined availability windows.

[0005] One of the challenges in managing the timeframes during which user equipment (UE) is monitoring the availability of incoming communications is that, in some cases, it may be necessary to delay any incoming communications until the active window for monitoring a particular UE becomes available. In some cases, incoming communications can be associated with requested scheduling clearances, which are related to the UE's anticipated transmission of data to the network. These requested scheduling clearances may have varying degrees of tolerance for any such delays.

[0006] For some types of devices, there may be incentives to increase the available time period for the device to receive incoming communications, and correspondingly, when the device is unavailable, it may be possible to place one or more portions of its electronic circuitry into an inactive state, during which the overall power consumption of the device can be reduced. Such a device can include at least some form of reduced-capability user equipment, which is sometimes designed to operate unattended for extended periods on a single charge. To further reduce overall power consumption, the device can be better positioned to operate on a single charge for even longer periods.

[0007] The inventors have recognized that, in addition to managing when and how often a device monitors channels, managing how many channels to monitor and / or use can be advantageous, where monitoring and / or using a wider bandwidth may require more resources and potentially more power than monitoring and / or using a relatively narrow bandwidth. By identifying a subset of channels to be used, more power-efficient operation can be permitted. Furthermore, within a defined narrow bandwidth, frequency hopping within a specific bandwidth portion can potentially be utilized, which can also help avoid potential sources of interference. Summary of the Invention

[0008] This application provides a method in a user equipment. The method includes receiving information about the frequency domain resources of a control resource set representing an active downlink bandwidth portion and information about a search space set associated with the control resource set. Based on the information about the frequency domain resources and the frequency hopping information of the control resource set, the method determines the frequency position of the control resource set at a physical downlink control channel monitoring time within the search space set. Based on the determined frequency position of the control resource set at the physical downlink control channel monitoring time, the method performs blind decoding of physical downlink control channel candidates.

[0009] According to another possible embodiment, a user equipment (UE) for communicating within a network is provided. The UE includes a transceiver that receives information about the frequency domain resources of a control resource set for an active downlink bandwidth portion and information about a search space set associated with the control resource set. The UE further includes a controller that determines the frequency position of the control resource set at a physical downlink control channel monitoring (PLC) timing within the search space set based on the frequency domain resource information and frequency hopping information of the control resource set, and performs blind decoding of PLC candidates based on the determined frequency position of the control resource set at the PLC monitoring timing.

[0010] According to another possible embodiment, a method is provided in a network entity for communicating with a user equipment. The method includes information about the frequency domain resources of a control resource set for transmitting an active downlink bandwidth portion and information about a search space set associated with the control resource set. Based on the information about the frequency domain resources and the frequency hopping information of the control resource set, the frequency position of the control resource set at a physical downlink control channel monitoring time in the search space set is determined. A physical downlink control channel is transmitted based on the determined frequency position of the control resource set at the physical downlink control channel monitoring time.

[0011] According to another possible embodiment, a network entity for communicating with a user equipment is provided. The network entity includes a transceiver that transmits information about frequency domain resources of a control resource set for an active downlink bandwidth portion and information about a search space set associated with the control resource set. The network entity further includes a controller that determines the frequency position of the control resource set at a physical downlink control channel monitoring time in the search space set based on the frequency domain resource information and frequency hopping information of the control resource set. A physical downlink control channel is transmitted based on the determined frequency position of the control resource set at the physical downlink control channel monitoring time.

[0012] These and other features and advantages of this application will become apparent from the following description of one or more preferred embodiments, with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a block diagram of an exemplary network environment in which the present invention is suitable for operation;

[0014] Figure 2 This is a resource mapping example illustrating frequency hopping control of resource sets;

[0015] Figure 3 It is a flowchart in user equipment associated with the determined information of frequency location and frequency hopping based on the control resource set;

[0016] Figure 4 This is a flowchart of a network entity associated with selectively transmitting physical downlink control channel candidates based on information determined by the frequency location and frequency hopping of the control resource set; and

[0017] Figure 5 This is an exemplary block diagram of an apparatus according to a possible embodiment. Detailed Implementation

[0018] While this disclosure allows for various forms of embodiments, preferred embodiments are shown in the accompanying drawings and will be described below. However, it should be understood that this disclosure is considered to be exemplary of the invention and is not intended to limit the invention to the specific embodiments shown.

[0019] The implementation provides more power-efficient operation in user equipment with reduced capabilities.

[0020] Figure 1 This is an exemplary block diagram of system 100 according to a possible embodiment. System 100 may include wireless communication device 110 such as user equipment (UE), base station 120 such as enhanced NodeB (eNB) or next-generation NodeB (gNB), and network 130. Wireless communication device 110 may be a wireless terminal, portable wireless communication device, smartphone, cellular phone, flip phone, personal digital assistant, personal computer, selective call receiver, tablet computer, laptop computer, or any other device capable of transmitting and receiving communication signals on a wireless network.

[0021] Network 130 can include any type of network capable of transmitting and receiving wireless communication signals. For example, network 130 can include wireless communication networks, cellular telephone networks, time division multiple access (TDMA) based networks, code division multiple access (CDMA) based networks, orthogonal frequency division multiple access (OFDMA) based networks, long-term evolution (LTE) networks, fifth-generation (5G) networks, 3rd generation partnership (3GPP) based networks, satellite communication networks, high-altitude platform networks, the Internet and / or other communication networks.

[0022] In RAN#86, a new research project (SID) supporting NR equipment with reduced capabilities (RP-193238) was approved. The requirements and target use cases are listed below:

[0023] General requirements:

[0024] • Device Complexity: Compared to Rel-15 / Rel-16 high-end enhanced mobile broadband (eMBB) and ultra-reliable low-latency communication (URLLC) devices, the primary motivation for the new device type is to reduce device cost and complexity. This is especially true for industrial sensors.

[0025] • Device size: For most use cases, the requirement is for a standard implementation of a device design with a compact form factor.

[0026] • Deployment scenario: The system should support all frequency range 1 (FR1) / frequency range 2 (FR2) bands for frequency division duplex (FDD) and time division duplex (TDD).

[0027] Use case specific requirements:

[0028] • Industrial Wireless Sensors: Reference use cases and requirements are described in 3GPP Technical Report (TR) 22.832, entitled "Study on Enhancements for Cyber-Physical Control Applications in Vertical Domains, Services and Systems," and TS 22.104, entitled "Service Requirements for Cyber-Physical Control Applications in Vertical Domains, Services and Systems," respectively: Communication service availability is 99.99%, and end-to-end latency is less than 100ms. For all use cases, the reference bit rate is less than 2Mbps (potentially asymmetric, such as uplink (UL) heavy traffic), and the device is stationary. The battery should last for at least several years. For safety-related sensors, the latency requirement is lower, 5 to 10ms (TR 22.804).

[0029] • Video surveillance: As described in TS 22.804, the reference economic video bitrate will be 2 to 4 Mbps, latency <500 ms, and reliability 99%-99.9%. High-end video for agriculture, for example, will require 7.5 to 25 Mbps. Note that the business model is dominated by UL transmission.

[0030] • Wearable devices: The reference bit rate for smart wearable applications can be 10 to 50 Mbps for downlink (DL) and a minimum of 5 Mbps in UL, with higher peak bit rates for devices, such as 150 Mbps for downlink and 50 Mbps for uplink. The device's battery should last for several days (up to 1 to 2 weeks).

[0031] The aim is to investigate a list of UE features and parameters with lower-end capabilities relative to version 16eMBB and URLLC NR to serve the three use cases mentioned above.

[0032] The research project includes the following objectives:

[0033] Identify and study potential UE complexity reduction features, including [Radio Access Network 1 (RAN1), Radio Access Network 2 (RAN2)]:

[0034] • Reduced number of UE receive (RX) / transmit (TX) antennas

[0035] • UE bandwidth reduced

[0036] Note: The Rel-15 Synchronization Signal Block (SSB) bandwidth should be reused, and Layer 1 (L1) changes should be minimized.

[0037] Half-duplex FDD

[0038] • Relaxed UE processing time

[0039] • Relaxed UE processing capabilities

[0040] Note 1: The work defined above should not overlap with low-power wide-area (LPWA) use cases. The minimum capability considered should be no less than an LTE Category 1bis modem.

[0041] The study investigates UE power savings and battery life enhancements for UEs with reduced capabilities in applicable use cases (e.g., latency tolerance) [RAN2, RAN1].

[0042] • Reduced physical downlink control channel (PDCCH) monitoring limited by a smaller number of blind decoding and control channel elements (CCE) [RAN1].

[0043] • Extended Discontinuous Reception (DRX) for Radio Resource Control (RRC) inactivity and / or idle periods [RAN2]

[0044] • Radio Resource Management (RRM) relaxation for fixed equipment [RAN2].

[0045] The research will enable features that can mitigate or limit the performance degradation caused by this reduction in complexity, including [RAN1]:

[0046] • Coverage restoration used to compensate for potential coverage reductions due to reduced equipment complexity.

[0047] The study explores standardized frameworks and principles for defining and constraining this reduced capability—considering the definition of a finite set of one or more device types and how to ensure that these device types are used only for the intended use cases [RAN2, RAN1].

[0048] The study will allow networks and network operators to explicitly identify devices with reduced capabilities and, when necessary, allow operators to restrict their access to [RAN2, RAN1] functionality.

[0049] Note 2: Potential overlap with coverage enhancement studies is discussed and resolved in RAN#87.

[0050] Note 3: Coexistence with Rel-15 and Rel-16 UEs should be ensured.

[0051] Note 4: This SI should focus on SA mode and single connectivity.

[0052] Reduced-capability UEs, such as those used in industrial wireless sensors, video surveillance, and wearables, may require operation with batteries that should last from several days (e.g., wearables) to at least several years (e.g., industrial sensors). Operating a reduced-capability UE with a narrow bandwidth by configuring and activating a narrow bandwidth portion can reduce power consumption and thus lead to power savings for the reduced-capability UE. On the other hand, narrow bandwidth portions can make it difficult to utilize frequency diversity and achieve interference randomization unless the reduced-capability UE is configured with multiple narrow bandwidth portions, each with a PDCCH configuration, and performs frequent switching of the active bandwidth portion (BWP).

[0053] This application proposes a method that allows for power-efficient PDDCH monitoring and also effectively utilizes frequency diversity without increasing signaling overhead.

[0054] According to 3GPP technical specification 38.211 (V16.1.0) 7.3.2.2 Control Resource Set (CORESET)

[0055] The control resource set is in the frequency domain In each resource block and time domain It consists of several symbols.

[0056] The control channel element consists of 6 resource element groups (REGs), where each resource element group equals one resource block during one Orthogonal Frequency Division Multiplexing (OFDM) symbol. The resource element groups in the control resource set are numbered in ascending order in a time-priority manner, starting from 0 of the first OFDM symbol and the lowest-numbered resource block in the control resource set.

[0057] The UE can be configured with multiple control resource sets. Each control resource set is associated with only one CCE-to-REG mapping.

[0058] The CCE-to-REG mapping used to control resource sets can be interleaved or non-interleaved, and is described by REG bundles:

[0059] - The REG bundle i is defined as REG[iL, iL+1, ..., iL+L-1}, where L is the size of the REG bundle, and, and The number of REGs in CORESET

[0060] -CCE j consists of REG bundles {f(6j / L), f(6j / L+1), ..., f(6j / L+6 / L-1)}, where f(·) is the interleaver.

[0061] For a non-interleaved CCE to REG mapping, L = 6 and f(x) = x.

[0062] For interleaved CCE to REG mappings, targeting Furthermore, targeting An interleaver is defined as follows:

[0063]

[0064] x = cR + r

[0065] r = 0, 1, ..., R-1

[0066] c = 0, 1, ..., C-1

[0067]

[0068] Where R∈{2,3,6}.

[0069] It is not expected that UE processing will result in a configuration where the quantity C is not an integer.

[0070] For CORESET configured by the ControlResourceSet information element (IE):

[0071] - It is given by the higher-level parameter frequencyDomainResources;

[0072] - The duration parameter is given by a higher-level parameter, which is supported only when the higher-level parameter dmrs-TypeA-Position equals 3.

[0073] - Interleaved or non-interleaved mapping is given by the higher-level parameter cce-REG-MappingType;

[0074] - For non-interleaved mappings, L equals 6, and for interleaved mappings, L is given by the higher-level parameter reg-BundleSize;

[0075] -R is given by the higher-level parameter interleaverSize;

[0076] - If provided, nshift∈{0,1,...,274} is given by the higher-level parameter shiftIndex; otherwise

[0077] - For both interleaved and non-interleaved mappings, the UE can assume

[0078] - If the higher-level parameter precoderGranularity is equal to sameAsREG-bundle, then the same precoding is used within the REG bundle;

[0079] - All resource element groups within a contiguous set of resource blocks across the CORESET use the same precoding, and if the higher-layer parameter precoderGranularity equals allContiguousRBs, then no resource element in the CORESET overlaps with an SSB or LTE cell-specific reference signal as indicated by the higher-layer parameter lte-CRS-ToMatchAround or additionalLTE-CRS-ToMatchAroundList.

[0080] For CORESET 0 configured by ControlResourceSetZero IE:

[0081] - and Defined by Clause 13 of [5, TS 38.213];

[0082] -UE can assume interleaved mapping

[0083] -L = 6;

[0084] -R = 2;

[0085] -

[0086] - When CORESET 0 is configured by MIB or SIB1, the UE can assume a normal cyclic prefix;

[0087] -UE can assume that the same precoding is used within the REG bundle.

[0088] According to 3GPP technical specification 38.213 (V16.1.0)

[0089] 10.1 UE Procedure for Determining Physical Downlink Control Channel Assignment

[0090] <Text omitted>

[0091] For each CORESET, ControlResourceSet provides the following to the UE:

[0092] -CORESET index p, represented by controlResourceSetId, where

[0093] - If CORESETPoolIndex is not provided, then 0 ≤ p < 12, or if CORESETPoolIndex is provided, then the value of CORESETPoolIndex is the same for all CORESETs;

[0094] - If CORESETPoolIndex is not provided for the first CORESET, then 0 < p < 16, or CORESETPoolIndex is provided and has a value of 0 for the first CORESET, and CORESETPoolIndex is provided and has a value of 1 for the second CORESET;

[0095] - Initialize the demodulation reference signal (DM-RS) scrambling sequence using pdcch-DMRS-ScramblingID;

[0096] - Precoder granularity for multiple REGs in the frequency domain, where the UE can assume the use of the same DM-RS precoder through precoder Granularity;

[0097] - Multiple consecutive symbols provided by duration;

[0098] - A collection of resource blocks provided by frequencyDomainResources;

[0099] - The CCE to REG mapping parameter provided by cce-REG-MappingType;

[0100] - Antenna port quasi-co-addressing indications from the antenna port quasi-co-addressing set provided by TCI-State are used for quasi-co-addressing information of the DM-RS antenna ports received by the PDCCH in the corresponding CORESET;

[0101] - If the simultaneous TCI-CellList provides the UE with multiple lists of cells that are simultaneously active in the Transmit Configuration Indicator (TCI) state, the UE will apply the antenna port quasi-co-addressing provided by the TCI-States with the same active tci-StateID value to the CORESET in the DL BWP of all configured cells in the list determined according to the serving cell index provided by the Medium Access Control (MAC) CE command, with index p.

[0102] - An indication of the presence or absence of the Transmission Configuration Indicator (TCI) field for the DCI format, which, in addition to Downlink Control Information (DCI) format 1_0, schedules Physical Downlink Shared Channel (PDSCH) reception or indicates Semi-Persistent Scheduling (SPS) PDSCH release, and is transmitted by tci-PresentInDCI or tci-PresentInDCI-ForDCFormat1_2 via PDCCH in Control Resource Set (CORESET) p.

[0103] When precoderGranularity = allContiguousRBs, the UE does not expect

[0104] - The set of resource blocks to be configured to include more than four subsets of resource blocks with non-adjacent frequencies in the CORESET.

[0105] - Any resource element (RE) of the CORESET that overlaps with any RE determined from lte-CRS-ToMatchAround or from LTE-CRS-PatternList-r16 or any RE of the Synchronization Signal / Physical Broadcast Channel (SS / PBCH) block.

[0106] For each CORESET in the DL BWP of the serving cell, a bitmap is provided for the corresponding frequencyDomainResources.

[0107] - If CORESET is not associated with any search space set configured with freqMonitirLcocation-r16, then the bits of the bitmap have a starting common RB position. of A one-to-one mapping between the ascending order of the Physical Resource Block (PRB) indexes in the DL BWP bandwidth of a PRB and a non-overlapping group of 6 consecutive PRBs, where, if no rb-offset is provided, the first common RB in the first group of 6 PRBs has a common RB index. Or the first common RB in the first group of 6 PRBs has a common RB index. in, Provided by rb-offset.

[0108] - If CORESET is associated with at least one search space set configured with freqMonitirLcocation-r16, then the bitmap's front Each bit has a starting common RB position. of A one-to-one mapping between the ascending order of the PRB indices in the DLBWP bandwidth of a PRB and the non-overlapping groups of 6 consecutive PRBs, where the first common RB in the first group of 6 PRBs has a common RB index. NRB, setOsize is the number of available PRBs in RB set 0 for DL ​​BWP, and Provided by rb-offset, or if rb-offset is not provided, then

[0109] For CORESETs other than the one with index 0,

[0110] - If the UE has not yet been provided with a TCI state configuration by tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList for CORESET, or has not yet been provided with an initial configuration for more than one TCI state for CORESET by tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList, but the UE has not yet received a Media Access Control (MAC) CE activation command for one of the TCI states as described in [11, TS 38.321], then the UE assumes that the DM-RS antenna port associated with PDCCH reception is quasi-co-located with the SS / Physical Broadcast Channel (PBCH) identified by the UE during the initial access procedure;

[0111] - If the UE is provided with more than one TCI state configuration by tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList for CORESET as part of a reconfiguration with a synchronization procedure as described in [12, TS 38.331], but the UE does not receive a MAC CE activation command for one of the TCI states as described in [11, TS 38.321], then the UE assumes that the DM-RS antenna port associated with PDCCH reception is quasi-co-located with the SS / PBCH block or Channel State Information Reference Signal (CSI-RS) resource identified by the UE during a random access procedure initiated by a reconfiguration with a synchronization procedure as described in [12, TS 38.331].

[0112] For a CORESET with index 0, the UE assumes that the DM-RS antenna port used for PDCCH reception in the CORESET is quasi-co-addressed with the following:

[0113] - One or more DL RSs configured by the TCI state, where the TCI state is indicated by a MAC CE activation command for CORESET (if any), or

[0114] - If no MAC CE activation command indicating the TCI state for CORESET is received after the most recent random access procedure, the UE identifies the SS / PBCH block during the most recent random access procedure that was not initiated by a PDCCH command that triggered the contention-free random access procedure.

[0115] For CORESETs other than those with index 0, if the UE is provided with a single TCI state for the CORESET, or if the UE receives a MAC CE activation command for one of the provided TCI states for the CORESET, the UE assumes that the DM-RS antenna port associated with PDCCH reception in the CORESET is quasi-co-located with one or more DL RSs configured by the TCI state. For a CORESET with index 0, the UE expects the quasi-co-location (QCL)-Type D of the CSI-RS in the TCI state indicated by the MAC CE activation command for the CORESET to be provided by the SS / PBCH block.

[0116] - If the UE receives a MAC CE activation command for one of the TCI states, the UE applies the activation command in the first time slot, which is in the time slot. Subsequently, k is the time slot in which the UE will transmit the Physical Uplink Control Channel (PUCCH) with Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) information for the PDSCH used to provide the activation command, and μ is the SCS configuration for the PUCCH. When the activation command is applied, the active BWP is defined as the active BWP in the time slot.

[0117] For each DL BWP configured for a UE in the serving cell, it is provided to the UE by a higher layer having S≤10 search space sets, wherein, for each search space set from the S search space sets, the SearchSpace provides the UE with the following:

[0118] - Index s of the search space set using searchSpaceId, where 0 < s < 40.

[0119] - Association between search space set s and CORESET p via controlResourceSetId

[0120] -k via monitoringSlotPeriodicityAndOffset s The periodicity of the PDCCH monitoring slot in each time slot and o s PDCCH monitoring offset for each time slot

[0121] - The PDCCH monitoring mode within the slot of the first symbol of CORESET used for PDCCH monitoring is indicated by monitoringSymbolsWithinSlot.

[0122] - T indicates the existence of multiple time slots in the search space set s via duration. s <k sDuration of each time slot

[0123] - Multiple PDCCH candidates for each CCE aggregation level L of aggregationLevel1, aggregationLevel2, aggregationLevel4, aggregationLevel8, and aggregationLevel16 for CCE aggregation levels 1, 2, 4, 8, and 16 respectively.

[0124] - The searchspace type indicates whether the search space set is a public search space (CSS) set or a user-specific search space (USS) set.

[0125] -If the searchspace set s is a CSS set

[0126] - Monitor PDCCH candidates for Downlink Control Information (DCI) formats 0_0 and 1_0 as instructed by dci-Format0-0-AndFormat1-0.

[0127] - Monitor one or two PDCCH candidates for DCI Format 2_0 and the corresponding CCE aggregation level, as indicated by dci-Format2_0.

[0128] - Monitor PDCCH candidates for DCI format 2_1 as instructed by dci-Format2-1

[0129] - Monitor PDCCH candidates for DCI Format 2_2 as instructed by dci-Format2-2

[0130] - Monitor PDCCH candidates for DCI format 2_3 as instructed by dci-Format2-3

[0131] - Monitor PDCCH candidates for DCI Format 2_4 as instructed by dci-Format2-4

[0132] - Monitor PDCCH candidates for DCI Format 2_6 as instructed by dci-Format2-6

[0133] - If the search space set s is a USS set, then monitoring of PDCCH candidates for DCI format 0_0 and DCI format 1_0 or for DCI format 0_1 ​​and DCI format 1_1 is indicated by dci-Formats, or monitoring of PDCCH candidates for DCI format 0_0 and DCI format 1_0 or for DCI format 0_1 ​​and DCI format 1_1 or for DCI format 0_2 and DCI format 1_2 is indicated by dci-Formats-Rel16, or monitoring of PDCCH candidates for DCI format 0_1, DCI format 1_1, DCI format 0_2 and DCI format 1_2 or for DCI format 3_0 or for DCI format 3_1 or for DCI format 3_0 and DCI format 3_1 is indicated by dci-Formats-Rel16.

[0134] - A bitmap indicating one or more RB sets for searching spatial set s, provided by freqMonitorLocation-r 16 (if provided), where MSB k in the bitmap corresponds to RB set k-1 in DL BWP. For the RB set k indicated in the bitmap, the first PRB restricting the frequency domain monitoring location within the RB set is determined by... Given, among which It is the index of the first PRB in the RB set k, and Provided by rb-offset, or if rb-offset is not provided, then Based on the frequencyDomainResources provided by the associated CORESET configuration. Each bit determines the frequency domain resource allocation pattern for each monitoring location.

[0135] If monitoringSymbolsWithinSlot instructs the UE to monitor a subset of up to three consecutive symbols of the same PDCCH in each slot of all search space sets monitored by the UE, then if the subset includes at least one symbol after the third symbol, the UE does not expect to be configured with a PDCCH SCS other than 15 kHz.

[0136] The UE does not expect to be provided with the first symbol and multiple consecutive symbols for CORESET, which results in the PDCCH candidate being mapped to symbols in different time slots.

[0137] For the same search space set or for different search space sets, within the same CORESET separated by a non-zero number of symbols less than the CORESET duration, the UE does not expect any two PDCCH monitoring opportunities on the active DL BWP.

[0138] The UE determines the PDCCH monitoring timing on the active DL BWP based on the PDCCH monitoring periodicity, PDCCH monitoring offset, and PDCCH monitoring mode within the time slot. For the search space set s, if... Then the UE determines that the PDCCH monitoring opportunity exists when there is a number n f The frame with number In the time slot. The UE monitors from the time slot. The beginning of T s Monitor PDCCH candidates for the search space set s within consecutive time slots, and in the next k... s -T s PDCCH candidates are not monitored for the search space set s within a consecutive time slot.

[0139] <Text omitted>

[0140] The UE expects to monitor PDCCH candidates for up to four sizes of DCI formats, including up to three sizes of DCI formats with cyclic redundancy check (CRC) scrambled by the cell radio network temporary identifier (C-RNTI) of each serving cell. The UE counts the number of sizes of DCI formats for each serving cell based on the number of PDCCH candidates configured in the corresponding search space set of the corresponding active DL BWP.

[0141] <Text omitted>

[0142] The CCEs of the PDCCH candidates do not overlap if they correspond to the following:

[0143] - Different CORESET indexes, or

[0144] - A different first symbol used for receiving the corresponding PDCCH candidate.

[0145] <Text omitted>

[0146] If the UE is provided with resourceBlocks and symbolsInResourceBlock in RateMatchPattern, or if periodicityAndPattern is also provided in RateMatchPattern, the UE can determine the set of RBs that are not available for PDSCH reception in the symbols of a time slot, as described in [6, TS 38.214]. If a PDSCH candidate in a time slot is mapped to one or more REs that overlap with the REs of any RB in the set of RBs in the symbols of the time slot, the UE does not expect to monitor the PDSCH candidate.

[0147] 12-bandwidth section operation

[0148] <Text omitted>

[0149] The UE configured for operation in the bandwidth portion (BWP) of the serving cell is configured by a higher layer of the serving cell with a set of parameters configured by BWP-DownlinkCommon and BWP-DownlinkDedicated, which is a set of up to four bandwidth portions (BWPs) received by the UE in the DL bandwidth via parameter BWP-Downlink or parameter initialDownlinkBWP (DL BWP set), and a set of up to four BWPs transmitted by the UE in the UL bandwidth via parameter BWP-Uplink or parameter initialUplinkBWP (UL BWP set).

[0150] If no initialDownlinkBWP is provided to the UE, the initial DL BWP is defined by the position and number of consecutive PRBs in the CORESET for the Type 0-PDCCH CSS set, starting from the PRB with the lowest index and ending at the PRB with the highest index, as well as the SCS and cyclic prefix of the PDCCH received in the CORESET for the Type 0-PDCCH CSS set; otherwise, the initial DL BWP is provided by the initialDownlinkBWP. For operations on the primary or secondary cell, the initial UL BWP is provided to the UE via the initialUplinkBWP. If the UE is configured with a supplementary UL carrier, the initial UL BWP can be provided to the UE on the supplementary UL carrier via the initialUplinkBWP.

[0151] If the UE has a dedicated BWP configuration, the first active DL BWP for reception can be provided to the UE by firstActiveDownlinkBWP-Id on the carrier of the primary cell, and the first active UL BWP for transmission can be provided to the UE by firstActiveUplinkBWP-Id.

[0152] For each DL BWP or UL BWP in the DL BWP or UL BWP set, as defined in [4,TS 38.211] or [6,TS38.214], provide the UE with the following parameters for the serving cell:

[0153] -SCS via subcarrierSpacing

[0154] - Cyclic prefix via cyclicPrefix

[0155] - The offset RB is indicated according to [6, TS 38.214]. start and length L RB As the locationAndBandwidth of the RIV, set And the value O provided by offsetToCarrier for subcarrierSpacing. carrier Public RB provided and multiple consecutive RBs

[0156] - Indexed in the set of DL BWPs or UL BWPs by the corresponding BWP-Id

[0157] - Composed of the BWP-common parameter set and BWP-dedicated parameter set for DL ​​BWP (BWP-DownlinkCommon and BWP-DownlinkDedicated) or BWP-UplinkCommon and BWP-UplinkDedicated for UL BWP [12, TS 38.331]

[0158] For unpaired spectrum operation, when the DL BWP index and UL BWP index are the same, the DL BWP from the set of DL BWPs with configurations provided by the BWP-Id is linked to the UL BWP from the set of ULBWPs with configurations provided by the BWP-Id. For unpaired spectrum operation, when the BWP-Id of the DL BWP is the same as the BWP-Id of the UL BWP, the UE does not expect to receive configurations where the center frequency of the DL BWP is different from the center frequency of the UL BWP.

[0159] For each DL BWP in the primary cell (PCell) or secondary PUCCH cell (SCell) set, a CORESET can be configured for the UE for each type of CSS set and for the USS, as described in Clause 10.1. The UE does not expect configuration if there is no CSS set on the PCell or PUCCH-SCell of the primary cell group (MCG) in the active DL BWP.

[0160] If controlResourceSetZero and searchSpaceZero are provided to the UE in PDCCH-ConfigSIB1 or PDCCH-ConfigCommon, the UE determines the CORESET of the search space set based on controlResourceSetZero, as described in Clause 13 and with respect to Tables 13-1 to 13-10, and determines the corresponding PDCCH monitoring timing, as described in Clause 13 and with respect to Tables 13-11 to 13-15. If the active DL BWP is not the initial DL BWP, the UE determines the PDCCH monitoring timing for the search space set only if the CORESET bandwidth is within the active DL BWP and the active DL BWP has the same SCS configuration and the same cyclic prefix as the initial DL BWP.

[0161] <Text omitted>

[0162] According to 3GPP technical specification 38.133 (V15)

[0163] 8.6.2 BWP handover delay based on DCI and timer

[0164] The requirements in this clause apply only to BWP handover performed on a single component carrier (CC).

[0165] For DCI-based BWP handover, after the UE receives a BWP handover request in DL slot n on the serving cell, the UE should be able to receive PDSCH (for DL-active BWP handover) or transmit Physical Uplink Shared Channel (PUSCH) (for UL-active BWP handover) on the new BWP on the serving cell. On that serving cell, the BWP handover in the first DL or UL slot immediately follows in DL slot n+T. BWPswitchDelay It happens after the start.

[0166] In cells where DCI-based BWP handover occurs, during duration T BWPswitchDelay During this period, the UE is not required to transmit UL signals or receive DL signals. When performing DCI-based BWP handover between BWPs in disjoint or partially overlapping channel bandwidths, the UE is not required to comply with the requirements defined in this clause.

[0167] For timer-based BWP handover, the UE should initiate BWP handover at DL slot n, where n is the start of the DL subframe (FR1) or DL ​​half-frame (FR2) immediately following the expiration of the BWP inactivity timer bwp-InactivityTimer[2] on the serving cell, and the UE should be able to receive PDSCH (for DL ​​active BWP handover) or transmit PUSCH (for UL active BWP handover) on the new BWP on the serving cell, where the BWP handover on the first DL or UL slot immediately follows the DL slot n+T. BWPswitchDelay It happens after the start.

[0168] After the bwp-InactivityTimer[2] expires on the cell where the timer-based BWP handover occurs, the UE does not need to transmit a UL signal or receive a DL signal.

[0169] Depending on the UE's bwp-SwitchingDelay[2] capability, the UE should be within the duration T defined in Table 8.6.2-1. BWPswitchDelay Complete the BWP switchover within the time limit.

[0170] Table 8.6.2-1: BWP handover delay

[0171]

[0172] If the UE does not have the TCI state information required to receive PDCCH and PDSCH in the new BWP, the UE should use the old TCI state before the BWP handover until it receives the new MAC CE after the BWP handover to update the TCI state information required to update PDCCH and PDSCH.

[0173] If the UE has information about the TCI status information required to receive PDCCH and PDSCH in the new BWP

[0174] - The UE should be able to receive PDCCH and PDSCH with the old TCI state in the new BWP before the delay specified in Clause 8.10.

[0175] - The UE should be able to receive PDCCH and PDSCH with the new TCI status in the new BWP after the delay specified in Clause 8.10.

[0176] <End of the included section>

[0177] According to this application, in one embodiment, the cell of a UE with reduced service capability will configure the bandwidth of the CORESET with index zero (i.e., CORESET0, for the associated Type 0-PDCCH common search space (CSS) of the DCI format with cyclic redundancy check (CRC) scrambled by the System Information Radio Network Temporary Identifier (SI-RNTI) on the primary cell of the primary cell group (MCG)) to be equal to or less than the minimum UE bandwidth of the UE with reduced capability in a given frequency band (e.g., the minimum UE bandwidth supported in a given frequency band for a UE that is allowed to occupy / not be banned on the serving cell in a given frequency band). That is, the UE with reduced capability does not expect the bandwidth of CORESET0 to be greater than its predetermined minimum UE bandwidth.

[0178] In another implementation, a cell serving a reduced-capability UE other than a Rel-15 / 16NR UE can be configured with a CORESET0 bandwidth greater than the minimum UE bandwidth of the reduced-capability UE. In this case, the cell can provide a separate CORESET0 for a separate Type 0-PDCCH CSS for the reduced-capability UE. Once it is determined that the bandwidth of the traditional (e.g., NR Rel-15 / 16) CORESET0 of the traditional Type 0-PDCCH CSS set configured by pdcch-ConfigSIB1 in the MIB, or by searchSpaceSIB1 in PDCCH-ConfigCommon, or by searchSpaceZero in PDCCH-ConfigCommon, is wider than the minimum UE bandwidth of the reduced-capability UE for a given frequency band, the reduced-capability UE can initiate configuration information to identify a separate CORESET0 and the corresponding separate Type 0-PDCCH CSS for the reduced-capability UE.

[0179] In one implementation, a reduced-capability UE may not support dynamic handover of active bandwidth portions indicated by DCI, and / or may be configured with only one UE-specific bandwidth portion. In another implementation, a reduced-capability UE may support dynamic handover of active bandwidth portions based on DCI (and / or timer-based), potentially having relaxed bandwidth portion handover latency requirements compared to NR UEs supporting eMBB and URLLC use cases. Considering that bandwidth portion configuration includes a set of DL and ULRRC configuration parameters, such as PDCCH, PDSCH, PUCCH, and PUSCH configurations, it is preferable to allow the use of a limited number of bandwidth portions (e.g., a UE-specific DL / UL bandwidth portion and an initial DL / UL bandwidth portion) to configure a reduced-capability UE for reduced complexity (e.g., memory capacity). In one example, a UE with reduced capability can be configured with a first bandwidth portion and a second bandwidth portion, wherein at least one of the DL and UL RRC configuration parameter sets such as PDCCH, PDSCH, Physical Uplink Control Channel (PUCCH), and Physical Uplink Shared Channel (PUSCH) configurations is configured on the first bandwidth portion (e.g., BWP ID 1) but not on the second bandwidth portion (e.g., BWP ID 2), wherein the UE assumes that at least one configuration on the second bandwidth portion is the same as the configuration on the first bandwidth portion. The bandwidth portion uses the same parameter set for all configured BWPs.

[0180] CORESET frequency hopping

[0181] In one embodiment, the UE (potentially degraded UE) receives information about the frequency domain resources of the control resource set within the DL active bandwidth portion and information about frequency hopping of the control resource set within the DL active bandwidth portion (e.g., one or more frequency offset values ​​and / or frequency hopping periodicity and / or frequency hopping pattern). Based on the frequency domain resource information and the frequency hopping information, the UE determines the frequency location (e.g., PRB set) of the control resource set during each PDCCH monitoring opportunity associated with the control resource set, and performs blind decoding of the PDCCH at the determined frequency location of the control resource set. Furthermore, the UE determines the DL subband of the DL active bandwidth portion associated with the determined frequency location of the control resource set and receives DL signals / channels within the DL subband. The DL subband includes at least the frequency location of the control resource set.

[0182] In one implementation, if the UE is configured with k via the RRC parameter monitoringSlotPeriodicityAndOffset s PDCCH monitoring periodicity and O in each time slot s The PDCCH monitoring offset for each time slot, then, in accordance with the following conditions... monitoring time slots The initial RB of the control resource set during the period is given as follows:

[0183]

[0184] in, It is a wireless frame n f The time slot number within, k′ s It is based on the CORESET frequency hopping periodicity of multiple time slots and the PDCCH monitoring periodicity k s Multiples of, RB start It is the starting RB of the CORESET within the DL BWP calculated based on the RRC parameter frequencyDomainResources configured in the CORESET, and RB offset This is the frequency offset in the RB between the two frequency hopping frequencies. In one example, the RB is indicated by higher-layer signaling (e.g., RRC signaling). offset In one example, RB offset This is based on the number of RBs in the active DL bandwidth portion and / or the number of RBs including CORESET. In the time slot... The beginning of T s When monitoring PDCCH candidates for a search space set s within consecutive time slots, the initial RB of CORESET is for T. s Each consecutive time slot is identical. Figure 2 This is resource mapping 200, illustrating an example of frequency hopping control for a resource set. More specifically, Figure 2 The diagram illustrates an example of CORESET frequency hopping (PDCCH monitoring periodic k). s =2, PDCCH monitoring offset O s =O, the number of continuous monitoring time slots T s =1, and CORESET frequency hopping periodicity k′ s =4).

[0185] In another implementation, if the UE is configured with k via the RRC parameter monitoringSlotPeriodicityAndOffset s PDCCH monitoring periodicity and O in each time slot s The PDCCH monitoring offset for each time slot, then, in accordance with the following conditions... monitoring time slots The initial RB of the control resource set during the period is given as follows:

[0186]

[0187] in, It is a wireless frame n f The time slot number within, k′s It is based on the CORESET frequency hopping periodicity of multiple time slots and the PDCCH monitoring periodicity k s Multiples of, RB start The starting RB within the DL BWP is calculated based on the RRC parameter frequencyDomainResources configured in CORESET, and the RB... offset，1 It is the first frequency offset value in RB, and RB offset，2 It is the second frequency offset value among the RBs in the three frequency hops. In one example, the RB is indicated by higher-layer signaling (e.g., RRC signaling). offset，1 and RB offset，2 From the time slot The beginning of T s When monitoring PDCCH candidates for a search space set s within consecutive time slots, the initial RB of CORESET is for T. s Each consecutive time slot is identical.

[0188] In one implementation, it is not expected that the UE will receive any DL signals / channels for a first duration that occurs exactly before the start of the first monitoring opportunity within the CORESET frequency hopping period for each frequency hop. The first duration may be represented by multiple symbols or multiple time slots and may be configured or predefined, and may depend on the parameter set (e.g., subcarrier spacing) of the active DL BWP.

[0189] In another embodiment, the UE is configured with multiple cores and multiple subbands within an active DL bandwidth portion, each subband being associated with a core within the multiple cores, and subband handover is performed between the multiple subbands based on a predefined or configured subband handover pattern. It is not expected that the UE will receive any DL signals / channels during a first duration immediately preceding the start of subband handover.

[0190] In other embodiments, the UE is configured with multiple DL bandwidth portions and performs BWP handover between multiple DL BWPs based on a predetermined or configured BWP handover mode.

[0191] Opportunistic broadband operations within the bandwidth segment

[0192] A UE monitoring a narrowband CORESET and operating within the DL / UL subband associated with the frequency location of the narrowband CORESET can continue to operate in narrowband mode until the UE detects a DCI format indicating a wideband DL / UL signal / channel and / or a wideband DL / UL signal / channel assumed to be in a semi-static receive / transmit configuration. Once the UE begins operating in wideband mode within the active DL / UL bandwidth portion, the UE starts / restarts a wideband operation timer for each reception or transmission of a wideband signal / channel.

[0193] In one embodiment, if the duration between the end time of scheduling the PDSCH and / or the PDCCH of the uplink channel and the start time of PDSCH reception and uplink channel transmission is not longer than (optionally, less than) a first DL / UL delay value, then it is expected that the UE receiving the corresponding PDSCH and / or transmitting the PDCCH with reduced ability to monitor the PDCCH in the control resource set of the DL active bandwidth portion will be restricted to the corresponding uplink channel (e.g., PUSCH and PUCCH) within the first DL / UL subband of the first DL / UL bandwidth, wherein the first DL subband includes the control resource set, and wherein the first DL / UL bandwidth is narrower than the bandwidth of the DL / UL active bandwidth portion but not less than the bandwidth of the control resource set.

[0194] If the duration between the end time of the PDSCH and / or the PDCCH of the uplink channel and the start time of PDSCH reception and uplink channel transmission is longer than (optionally, not less than) a first DL / UL delay value, then the UE receives the corresponding PDSCH and / or transmits the corresponding uplink channel within a first DL / UL subband of the first DL / UL bandwidth or within a second DL / UL subband of the second DL / UL bandwidth, wherein the second DL / UL subband is included in the DL / UL active bandwidth portion, and wherein the second DL / UL bandwidth is not less than the first DL / UL bandwidth. The UE identifies which DL / UL subband (first DL / UL subband and second DL / UL subband) it will receive and / or transmit based on the frequency domain resource allocation information of the corresponding PDSCH or uplink channel.

[0195] In one implementation, the second DL / UL bandwidth is wider than the first DL / UL bandwidth. In one example, the second DL / UL subband is the same as a portion of the DL / UL active bandwidth. In another example, the second DL / UL subband includes the first DL / UL subband. In yet another implementation, the second DL / UL bandwidth is equal to the first DL / UL bandwidth, and the second DL / UL subband either does not overlap with the first DL / UL subband in frequency, or overlaps completely or partially with the first DL / UL subband in frequency.

[0196] In one implementation, a UE with reduced capability can receive information including a first DL / UL subband with a first DL / UL bandwidth, a second DL / UL subband with a second DL / UL bandwidth, and / or a first DL / UL delay value via higher-layer signaling and / or physical-layer signaling. For example, this information includes the start (and / or end) PRB of the first / second sub-address.

[0197] In another implementation, a first DL / UL subband including a first DL / UL bandwidth, a second DL / UL subband including a second DL / UL bandwidth, and / or a first DL / UL delay value can be predetermined based on reported UE capabilities (e.g., bandwidth portion handover delay, minimum operating bandwidth), the bandwidth of the active DL / UL bandwidth portion, and / or the bandwidth of the control resource set. In one example, the first DL (and UL in TDD) subband is determined to be the same as the frequency domain resources of the control resource set, and the first DL / UL bandwidth is the same as the bandwidth of the control resource set. In another example, the first DL delay value is determined to be the same as the reported bandwidth portion handover delay or bandwidth retuning delay. The first DL / UL delay value can be defined based on the number of slots and / or the number of symbols for the subcarrier spacing of the active DL / UL bandwidth portion. If an associated PDCCH is received on slot n, and if k determined based on the PDCCH is less than the first DL / UL delay value, the UE expects to receive PDSCH and / or transmit PUSCH / PUCCH within the first DL / UL subband of the first DL / UL bandwidth on slot n+k.

[0198] In other implementations, the first UL delay value used for PUCCH differs from the first UL delay value used for PUSCH. For example, it is based on the PDSCH processing time corresponding to the UE's PDSCH processing capability, a set of configured (or predefined) scheduling offset K0 values ​​(or minimum scheduling offset K). 0min The first UL delay value for PUCCH is determined by a set of configured (or predefined) HARQ-ACK feedback delay K1 values. The first UL delay value for PUSCH depends on the PUSCH processing time corresponding to the UE's PUSCH processing capacity and / or a set of configured (or predefined) scheduling offset K2 values ​​(or minimum scheduling offset K). 2min Based on a set of configured (or predefined) scheduling offset K0 values ​​(or minimum scheduling offset K). 0min To determine the first DL delay value.

[0199] In other implementations, UEs that do not wish to degrade their capabilities receive PDSCH or transmit PUSCH / PUCCH in the time slot in which they receive the PDSCH or PUSCH / PUCCH scheduled for PDSCH or PUSCH / PUCCH.

[0200] In another embodiment, the UE receives a first DL scheduling offset K for narrowband operation. 0min and the first UL scheduling offset K 2min The instruction, and receive the second DL scheduling offset K for wideband operation. 0min Second UL scheduling offset K 2min The instruction. In one implementation, the second DL / UL scheduling offset value is greater than the first DL / UL scheduling offset value. Wideband operation may be used to transmit and / or receive large packets. Therefore, more PDSCH and PUSCH processing time may be required, and thus, network entities (e.g., gNBs) can configure different groups of scheduling DL / UL offset values ​​for the UE for narrowband and wideband operation respectively.

[0201] In other embodiments, it is not desirable for a UE operating with narrow bandwidth within the active DL / UL bandwidth portion to receive DL signals / channels or transmit UL signals / channels for a first duration immediately preceding the start of transmission or reception of a (dynamically or semi-statically) scheduled wideband signal / channel. For the transmission timing of the scheduled wideband signal / channel, a timing advance value applied to the wideband signal / channel is considered. Similarly, it is not desirable for a UE operating with wide bandwidth within the active DL / UL bandwidth portion (e.g., operating with the same bandwidth as the active DL / UL bandwidth portion) to receive DL signals / channels or transmit UL signals / channels for a second duration immediately following the expiration of the wideband operation timer. In one example, the value of the wideband operation timer differs for the transmission or reception of semi-statically scheduled wideband signals and / or channels compared to that for dynamically scheduled wideband signals and / or channels. In one example, the value of the wideband operation timer differs for the transmission or reception of wideband signals and / or channels of the first type of semi-static scheduling and the second type of semi-static scheduling (e.g., DL semi-persistent scheduling, configured licensed transmissions, CSI feedback on PUCCH). In another example, the value of the wideband operation timer differs for the transmission and reception of wideband signals and / or channels.

[0202] In one implementation, the first duration for a UE switching from DL (or UL) narrowband to DL (or UL) wideband may differ from the duration for a UE switching from UL (or DL) narrowband to DL (UL) wideband. Similarly, the second duration for a UE switching from DL (or UL) wideband to DL (or UL) narrowband may differ from the duration for a UE switching from UL (or DL) wideband to DL (UL) narrowband. In another implementation, the first duration and the second duration are the same. In other implementations, the first duration, the second duration, and / or the wideband operation timer are predefined. Alternatively, the first duration, the second duration, and / or the wideband operation timer may be indicated via higher-layer signaling (e.g., RRC or MAC-CE) or via physical-layer signaling (e.g., DCI).

[0203] In one example, the first duration is determined based on a first number of symbols, and the UE does not begin receiving / transmitting from a symbol no earlier than the first number of symbols preceding the start symbol of the broadband signal / channel. In another example, the first duration is determined based on a first number of time slots, and the UE does not begin receiving / transmitting from a time slot no earlier than the first number of time slots preceding the start time slot of the broadband signal / channel.

[0204] In one example, the second duration is determined based on a second number of symbols, and the UE does not receive / transmit from the first symbol immediately after the broadband operation timer expires to the second number of symbols no later than the expiration of the broadband operation timer. In another example, the second duration is determined based on a second number of time slots, and the UE does not receive / transmit from the first time slot immediately after the expiration of the broadband operation timer to the second number of time slots no later than the expiration of the broadband operation timer.

[0205] UEs with reduced capabilities, such as industrial wireless sensors, video surveillance, and wearables, may need to operate using batteries that should last from several days (e.g., wearables) to at least several years (e.g., industrial sensors). This disclosure proposes a method that allows for power-efficient PDDCH monitoring and also effectively utilizes frequency diversity without increasing signaling overhead.

[0206] Example 1: Frequency Hopping of CORESET

[0207] • The UE performs frequency hopping on the CORESET (which may be configured with narrow bandwidth) within the active bandwidth portion to utilize frequency diversity and randomize interference. Additionally, the UE determines the DL / UL subband associated with the frequency location of the CORESET and receives / transmits DL / UL signals / channels within the DL / UL subband used for narrowband operation.

[0208] Example 2: Opportunistic Broadband Operation within a Bandwidth Portion

[0209] • The UE monitors the narrowband CORESET and operates within the subband associated with the frequency location of the narrowband CORESET until a scheduled wideband DL signal / channel is available.

[0210] Once the UE begins wideband operation within the active DL / UL bandwidth portion, the UE starts / restarts the wideband operation timer for each reception or transmission of a wideband signal / channel. Upon expiration of the wideband operation timer, the UE returns to narrowband operation.

[0211] • The UE receives the first DL / UL scheduling offset value K for narrowband operation. 0min / K 2min The instruction, and receive the second DL / UL scheduling offset value K for broadband operation. 0min / K 2min The instruction indicates that the second DL / UL scheduling offset value is greater than the first DL / UL scheduling offset value.

[0212] Power consumption can be reduced by configuring and activating narrowband portions to enable UEs with reduced narrowband capabilities. On the other hand, narrowband portions may make it difficult to utilize frequency diversity and randomize interference. Since each bandwidth portion configuration should include a set of DL and UL RRC configuration parameters, configuring a UE with reduced capabilities with multiple narrowband portions and performing frequent handovers of active BWPs can increase complexity.

[0213] Narrowband CORESET’s frequency hopping and opportunistic broadband operation within a relatively wide bandwidth range can reduce RRC signaling overhead and UE complexity, and can also reduce UE power consumption while flexibly handling packets of various sizes.

[0214] Figure 3 The illustration shows a flowchart 300 of a user equipment associated with selectively decoding physical downlink control channel candidates based on a determined frequency position of a control resource set and determined frequency hopping information. According to at least one embodiment, the method can include receiving 302 information about the frequency domain resources of a control resource set of an active downlink bandwidth portion and information about a search space set associated with the control resource set. Based on the frequency domain resource information and the frequency hopping information of the control resource set, 304 the frequency position of the control resource set is determined at a physical downlink control channel monitoring time in the search space set. Based on the determined frequency position of the control resource set at the physical downlink control channel monitoring time, 306 blind decoding of the physical downlink control channel candidates is performed.

[0215] In some instances, the method can further include receiving frequency hopping information for the control resource set.

[0216] In some instances, the frequency hopping information for the control resource set can include at least one frequency offset value and frequency hopping periodicity. In some of these instances, the frequency hopping periodicity can be a multiple of the physical downlink control channel monitoring periodicity.

[0217] In some instances, the method may further include: determining a downlink subband within an active downlink bandwidth portion, wherein the downlink subband is associated with a determined frequency location of a control resource set; and receiving at least one of a downlink signal and a downlink channel within the downlink subband. In some of these instances, the downlink subband may at least include the frequency location of the control resource set. Additionally and / or alternatively, the method may further include scheduling information for receiving at least one of a wideband signal and a wideband channel, wherein the at least one of the wideband signal and the wideband channel is not within the downlink subband but within an active downlink bandwidth portion. The receiver bandwidth can then be retuned from a first bandwidth to a second bandwidth, wherein the second bandwidth is wider than the downlink subband and the first bandwidth. At least one of the wideband signal and the wideband channel can be received according to the scheduling information, and a wideband operation timer can be activated at each timing associated with each reception of at least one of the wideband signal and the wideband channel. In one example, each timing associated with each reception of at least one of the wideband signal and the wideband channel is each reception timing of at least one of the wideband signal and the wideband channel. In another example, the timing is the reception timing of a physical downlink control channel that schedules at least one of the wideband signal and the wideband channel. Furthermore, in some instances, the method can be further configured to retune the receiver bandwidth from the second bandwidth to the first bandwidth when the broadband operation timer expires.

[0218] In some instances, the method may further include: determining an uplink subband of the uplink active bandwidth portion, wherein the uplink subband is associated with a determined frequency location of the control resource set; and transmitting at least one of an uplink signal and an uplink channel within the uplink subband.

[0219] In some instances, the method may further include receiving a first downlink scheduling offset value K for operation with a first downlink bandwidth. 0min The indication and the second downlink scheduling offset value K used for operation with the second downlink bandwidth 0min The instruction indicates that the second downlink bandwidth is wider than the first downlink bandwidth, and that the second downlink scheduling offset is greater than the first downlink scheduling offset.

[0220] In some instances, the method may further include receiving a first uplink scheduling offset value K for operation with a first uplink bandwidth.2min The indication and the second uplink scheduling offset value K used for operation with the second uplink bandwidth 2min The instruction indicates that the second uplink bandwidth is wider than the first uplink bandwidth, and that the second uplink scheduling offset is greater than the first uplink scheduling offset.

[0221] In some instances, a user equipment can be configured with multiple control resource sets and multiple subbands within an active downlink bandwidth portion, each subband being associated with a specific control resource set within the multiple control resource sets, and capable of performing subband switching between multiple subbands based on an established subband switching mode.

[0222] In some instances, a user equipment can be configured with multiple downlink bandwidth portions and perform bandwidth portion switching between multiple downlink bandwidth portions based on an established bandwidth portion switching mode.

[0223] In some instances, the user equipment can be a degraded user equipment.

[0224] In some instances, if the duration between the end time of the physical downlink control channel scheduling the physical downlink shared channel and the start time of physical downlink shared channel reception is not longer than a first downlink delay value, it is expected that a user equipment monitoring the physical downlink control channel of the control resource set in the active downlink bandwidth portion will receive the corresponding physical downlink shared channel confined to a first downlink subband of the first downlink bandwidth, wherein the first downlink subband may include the control resource set, and wherein the first downlink bandwidth may be narrower than the bandwidth of the active downlink bandwidth portion but not less than the bandwidth of the control resource set. In some of these instances, if the duration between the end time of the physical downlink control channel scheduling the physical downlink shared channel and the start time of physical downlink shared channel reception is longer than the first downlink delay value, the user equipment can receive the corresponding physical downlink shared channel in the first downlink subband of the first downlink bandwidth or in the second downlink subband of the second downlink bandwidth based on the downlink control information in the physical downlink control channel.

[0225] Figure 4The diagram illustrates a flowchart 400 of a network entity associated with selectively transmitting physical downlink control channel candidates based on a determined frequency position of a control resource set and determined frequency hopping information. According to at least one embodiment, the method can include transmitting 402 information about the frequency domain resources of the control resource set for an active downlink bandwidth portion and information about a search space set associated with the control resource set. Based on the frequency domain resource information and the frequency hopping information of the control resource set, 404 the frequency position of the control resource set at a physical downlink control channel monitoring time in the search space set is determined. 406 A physical downlink control channel is transmitted based on the determined frequency position of the control resource set at the physical downlink control channel monitoring time.

[0226] According to another embodiment, the method can include determining the frequency domain resources of a control resource set for an active downlink bandwidth portion, and identifying each frequency position of the control resource set at each physical downlink control channel monitoring time of a search space set associated with the control resource set. Frequency hopping information of the control resource set is determined based on the frequency domain resources of the control resource set and the identified frequency positions of the control resource set at each physical downlink control channel monitoring time. Information on the frequency domain resources of the control resource set, information on the search space set, and information on the frequency hopping of the control resource set are transmitted.

[0227] It should be understood that although specific steps are shown in the figures, various additional or different steps can be performed depending on the embodiment, and one or more of specific steps can be rearranged, repeated, or completely eliminated depending on the embodiment. Furthermore, some steps can be repeated simultaneously on an ongoing or continuous basis while other steps are being performed. Moreover, different steps can be performed by different elements of the disclosed embodiments or in a single element of the disclosed embodiments.

[0228] Figure 5 This is an exemplary block diagram of an apparatus 500, such as a wireless communication device 110, according to possible embodiments. Apparatus 500 may include a housing 510, a controller 520 within the housing 510, audio input and output circuitry 530 coupled to the controller 520, a display 540 coupled to the controller 520, a transceiver 550 coupled to the controller 520, an antenna 555 coupled to the transceiver 550, a user interface 560 coupled to the controller 520, a memory 570 coupled to the controller 520, and a network interface 580 coupled to the controller 520. Apparatus 500 can perform the methods described in all embodiments.

[0229] Display 540 may be a viewfinder, liquid crystal display (LCD), light-emitting diode (LED) display, organic light-emitting diode (OLED) display, plasma display, projection display, touchscreen, or any other device for displaying information. Transceiver 550 may include a transmitter and / or receiver. Audio input and output circuitry 530 may include a microphone, speaker, transducer, or any other audio input and output circuitry. User interface 560 may include a keypad, keyboard, buttons, touchpad, joystick, touchscreen display, another additional display, or any other device for providing an interface between a user and an electronic device. Network interface 580 may be a universal serial bus (USB) port, Ethernet port, infrared transmitter / receiver, IEEE 1394 port, WLAN transceiver, or any other interface that can connect the device to a network, device, and / or computer and can transmit and receive data communication signals. Memory 570 may include random access memory, read-only memory, optical memory, solid-state memory, flash memory, removable memory, hard disk drive, cache, or any other memory that can be coupled to the device.

[0230] Device 500 or controller 520 can implement any operating system, such as Microsoft. or Android TM Or any other operating system. For example, device operating software can be written in any programming language (such as C, C++, Java, or Visual Basic). Device software can also be written in application frameworks (such as... frame, The software and / or operating system may run on the memory 570 or other application framework. The software and / or operating system may be stored in the memory 570 or elsewhere on the device 500. The device 500 or controller 520 may also use hardware to implement the disclosed operations. For example, the controller 520 may be any programmable processor. The disclosed embodiments may also be implemented with: a general-purpose or special-purpose computer, a programmable microprocessor or microcontroller, peripheral integrated circuit elements, application-specific integrated circuits or other integrated circuits, hardware / electronic logic circuits (such as discrete component circuits), programmable logic devices (such as programmable logic arrays, field-programmable gate arrays), etc. Generally, the controller 520 may be any controller or processor device or multiple processor devices capable of operating the device and implementing the disclosed embodiments. Some or all of the additional elements of the device 500 may also perform some or all of the operations of the disclosed embodiments.

[0231] The methods disclosed herein can be implemented on a programmable processor. However, the controller, flowchart, and modules can also be implemented on general-purpose or special-purpose computers, programmable microprocessors or microcontrollers and peripheral integrated circuit elements, integrated circuits, hardware electronics or logic circuits such as discrete component circuits, programmable logic devices, etc. Generally, any device on which resides a finite state machine capable of implementing the flowcharts shown in the figures can be used to implement the processor functions of this disclosure.

[0232] While this disclosure has been described using specific embodiments, it will be apparent to those skilled in the art that many alternatives, modifications, and variations will be readily apparent. For example, various components of the embodiments may be interchanged, added to, or substituted in other embodiments. Furthermore, not all elements in each figure are essential for the operation of the disclosed embodiments. For example, those skilled in the art will be able to utilize the teachings of this disclosure by simply adopting the elements of the independent claims of the disclosed embodiments. Therefore, the embodiments of this disclosure as set forth herein are intended to be illustrative rather than restrictive. Various changes may be made without departing from the spirit and scope of this disclosure.

[0233] In this document, relational terms such as “first” and “second” may be used only to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between these entities or actions. The phrases “at least one of…”, “at least one selected from the group of…”, or “at least one selected from…” in subsequent lists are defined as referring to one, some, or all of the elements in the list, but not necessarily all of them. The terms “comprises,” “comprising,” “including,” or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but may also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further constraints, an element preceded by “a,” “an,” etc., does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element. Furthermore, the term “another” is defined as at least a second or more. The terms “comprising,” “having,” etc., as used herein, are defined as “including.” Furthermore, the background section is written as the inventor's own understanding of the context of some embodiments at the time of submission, and includes the inventor's own awareness of any problems with the prior art and / or problems experienced in the inventor's own work.

Claims

1. A method in a user equipment, the method comprising: Information on the frequency domain resources of the control resource set for the active downlink bandwidth portion of the receiver and information on the search space set associated with the control resource set; Based on the information of the frequency domain resources and the frequency hopping information of the control resource set, the frequency position of the control resource set is determined at the physical downlink control channel monitoring time of the search space set; as well as Blind decoding of physical downlink control channel candidates is performed based on the determined frequency position of the control resource set at the time of physical downlink control channel monitoring.

2. The method according to claim 1, further receiving frequency hopping information of the control resource set.

3. The method according to claim 1, wherein, The frequency hopping information of the control resource set includes at least one frequency offset value and frequency hopping periodicity.

4. The method according to claim 3, wherein, The frequency hopping periodicity is a multiple of the physical downlink control channel monitoring periodicity.

5. The method of claim 1, further comprising: Determine downlink subbands within the active downlink bandwidth portion, wherein the downlink subbands are associated with determined frequency positions of the control resource set, and Receive at least one of a downlink signal and a downlink channel within the downlink subband.

6. The method according to claim 5, wherein, The downlink subband includes at least the frequency position of the control resource set.

7. The method of claim 5, further comprising: Scheduling information for receiving at least one of a broadband signal and a broadband channel, wherein the at least one of the broadband signal and the broadband channel is not within the downlink subband but within the active downlink bandwidth portion; The receiver bandwidth is retuned from a first bandwidth to a second bandwidth, wherein the second bandwidth is wider than the downlink subband and the first bandwidth; To receive at least one of the broadband signal and the broadband channel according to the scheduling information; and Activate the broadband operation timer at each time point associated with each reception of at least one of the broadband signal and the broadband channel.

8. The method of claim 7, further comprising retuning the receiver bandwidth from the second bandwidth to the first bandwidth when the broadband operation timer expires.

9. The method of claim 1, further comprising: Determine the uplink subbands of the uplink active bandwidth portion, wherein the uplink subbands are associated with the determined frequency positions of the control resource set, and Transmit at least one of an uplink signal and an uplink channel within the uplink subband.

10. The method of claim 1, further comprising receiving a first downlink scheduling offset value K for operation with a first downlink bandwidth. 0min The indication and the second downlink scheduling offset value K used for operation with the second downlink bandwidth 0min The instructions, in which, The second downlink bandwidth is wider than the first downlink bandwidth, and the second downlink scheduling offset is greater than the first downlink scheduling offset.

11. The method of claim 1, further comprising receiving a first uplink scheduling offset value K for operating with a first uplink bandwidth. 2min The indication and the second uplink scheduling offset value K used for operation with the second uplink bandwidth 2min The instructions, in which, The second uplink bandwidth is wider than the first uplink bandwidth, and the second uplink scheduling offset is greater than the first uplink scheduling offset.

12. The method according to claim 1, wherein, The user equipment is configured with multiple control resource sets and multiple subbands within the active downlink bandwidth portion, each subband being associated with a specific control resource set within the multiple control resource sets, and performing subband switching between the multiple subbands based on an established subband switching mode.

13. The method according to claim 1, wherein, The user equipment is configured with multiple downlink bandwidth portions, and performs bandwidth portion switching between the multiple downlink bandwidth portions based on an established bandwidth portion switching mode.

14. The method according to claim 1, wherein, The user equipment mentioned is a user equipment with reduced capabilities.

15. The method according to claim 1, wherein, If the duration between the end time of the physical downlink control channel scheduling the physical downlink shared channel and the start time of physical downlink shared channel reception is not longer than a first downlink delay value, it is desirable to monitor the user equipment reception of the physical downlink control channel in the control resource set of the active downlink bandwidth portion, which is restricted to the corresponding physical downlink shared channel within a first downlink subband of the first downlink bandwidth, wherein the first downlink subband includes the control resource set, and wherein the first downlink bandwidth is narrower than the bandwidth of the active downlink bandwidth portion but not less than the bandwidth of the control resource set.

16. The method according to claim 15, wherein, If the duration between the end time of the physical downlink control channel for scheduling the physical downlink shared channel and the start time of receiving the physical downlink shared channel is longer than the first downlink delay value, then the user equipment receives the corresponding physical downlink shared channel in the first downlink subband of the first downlink bandwidth or in the second downlink subband of the second downlink bandwidth based on the downlink control information in the physical downlink control channel.

17. A user equipment for communicating within a network, the user equipment comprising: A transceiver that receives information about the frequency domain resources of a control resource set for an active downlink bandwidth portion and information about a search space set associated with the control resource set; as well as A controller determines the frequency position of the control resource set at the physical downlink control channel monitoring time in the search space set based on the information of the frequency domain resources and the frequency hopping information of the control resource set, and performs blind decoding of physical downlink control channel candidates based on the determined frequency position of the control resource set at the physical downlink control channel monitoring time.

18. The user equipment according to claim 17, wherein, The frequency hopping information of the control resource set includes at least one frequency offset value and frequency hopping periodicity.

19. The user equipment according to claim 17, wherein, The controller further determines downlink subbands within the active downlink bandwidth portion, wherein the downlink subbands are associated with determined frequency positions of the control resource set, and The transceiver further receives at least one of a downlink signal and a downlink channel within the downlink subband.

20. The user equipment according to claim 19, wherein, The transceiver further receives scheduling information for at least one of a broadband signal and a broadband channel, wherein the at least one of the broadband signal and the broadband channel is not within the downlink subband but within the active downlink bandwidth portion; Specifically, the receiver bandwidth is retuned from a first bandwidth to a second bandwidth, wherein the second bandwidth is wider than both the downlink subband and the first bandwidth, and at least one of the broadband signal and the broadband channel is received according to the scheduling information; and Specifically, a broadband operation timer is activated at each time point associated with each reception of at least one of the broadband signal and the broadband channel, and the receiver bandwidth is retuned from the second bandwidth to the first bandwidth when the broadband operation timer expires.

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