Patent Application
20240163040
The present disclosure relates to a cellular communications system and, more specifically, reference frequencies utilized as reference points for the generation of sequences for reference signals transmitted and received in a cellular communications system.
Multi-Transmission/Reception Point (TRP) (also denoted as M-TRP or mTRP) inter-cell is one of the Release 17 Multiple Input Multiple Output (MIMO) further enhancement items in Third Generation Partnership Project (3GPP) RAN1. The goal is to extend the Release 16 MIMO M-TRP scheme, which supports only mTRP reception from TRPs in one cell, to supporting the inter-cell case, where a User Equipment (UE) can receive downlink transmission from multiple TRPs where at least one of the TRPs may be associated with a cell different from the serving cell of the UE, i.e. with a different Physical Cell Identity (ID) than the serving cell.
The Working Item (WI) description in 3GPP states, in pertinent part:
1 Resource Blocks and Common Resource Blocks and Point A
A resource block (RB) is defined as twelve consecutive subcarriers in the frequency domain. ‘Point A’ is used as frequency reference point and is utilized for indicating the frequency resources in 3GPP New Radio (NR). Point A is also used as the starting point for sequence generation. The center of subcarrier 0 of common resource block 0 (CRB0) for subcarrier spacing configuration p coincides with Point A. Hence, the CRB numbering starts at point A even if the actual used RB does not start at point A but at some positive frequency offset relative to point A.
To summarize, CRB numbering starts at point A such that CRBs are numbered from 0 and upwards in the frequency domain for subcarrier spacing configuration p starting at point A.
Physical resource blocks (PRBs) for subcarrier spacing p are defined within a bandwidth part (BWP) and numbered from 0 to NBWP_size−1. In NR, a UE can be configured with up to four BWPs in the downlink with a single downlink BWP being active at a given time. The UE is not expected to receive Physical Downlink Shared Channel (PDSCH), Physical Downlink Control Channel (PDCCH), or Channel State Information Reference Signal (CSI-RS) (except for Radio Resource Management (RRM)) outside an active bandwidth part.
See
For a Special Cell (SpCell) or Primary Cell (PCell), which is used for initial access, Point A is given by offsetoPointA as signaled in system information block 1 (SIB1) from the network to the UE. Otherwise, Point A is configured to the UE and is given by the Absolute Radio Frequency Channel Number (ARFCN) value parameter (i.e., ARFCN-ValueNR parameter) signaled in FrequencyInforDL using dedicated Radio Resource Control (RRC) signaling from the network to the UE.
2 CSI Reference Signals and Mapping of CSI-RS to Physical Resources
The UE can be configured with both non-zero-power CSI-RS (NZP CSI-RS) and zero-power CSI-RS (ZP CSI-RS). One or more NZP CSI-RS resource set configuration(s) may be configured by higher layer parameters CSI-ResourceConfigand NZP-CSI-RS-ResourceSet As described in 3GPP Technical Specification (TS) 38.211 v16.4.0, for each CSI-RS configured, the UE maps the sequence r(m) to resource elements (k,l), where k and l is the indexing of subcarrier and symbol to represent the frequency and time domain allocation of a resource element.
The reference point for k=0 is subcarrier 0 in CRB 0 which is determined by the Point A configuration. Hence, even though the actual transmitted CSI-RS sequence starts at some positive frequency offset relative to Point A, the generated sequence has its starting point (k=0) at Point A.
The starting position and number of the resource blocks in which the UE assumes that the CSI-RS is transmitted are given by the higher-layer parameters freqBand and density in the CSI-RS-ResourceMapping Information Element (IE) for the BWP given by the higher layer parameter BWP-Id in the CSI-ResourceConfigIE or given by the higher layer parameters nrofPRBs in the CSI-RS-CellMobilityIE where the startPRBgiven by csi-rs-MeasurementBW is relative to common resource block 0.
For reporting the Channel State Information (CSI), the UE is configured with CSI-ReportConfigfor a single downlink BWP associated with the BWP-Id configured in CSI-ResourceConfig. The bandwidth and initial CRB index of a CSI-RS resource within a BWP is determined based on parameters nrofRBsand startingRB which are configured as integer multiples of 4 RBs, as well as the starting RB for BWP start NBWPstart and number of RBs as BWP size NBWPsize of the associated BWP-Id. That the initial CRB index for CSI-RS mapping NinitialRB is applied with the larger value of startingRB and NBWPstart, the bandwidth to map is applied with nrofRBs if the mapping is within the BWP, otherwise the bandwidth shall be NBWPstart+NBWPstart−NinitialRB.
“/” is a symbol index relative to the start of a slot. For periodic or semi-persistent CSI-RS resources, the transmitting slot of CSI-RS is determined by the periodicity Tcsi-rs and slot offset Toffset obtained from the higher-layer parameter CSI-ResourcePeriodicityAndOffset or slotConfig.
Note that section 7.4.1.5.3 in 3GPP TS 38.211 describes the formulas and parameters to determine the mapping of the sequences.
3 Mapping of Other Reference Signals to Physical Resources
Here, examples of other reference signals with their mapping reference for resource element in a slot associated with CRB0, i.e. Point A configuration are listed. So, also for PDCCH Demodulation Reference Signal (DMRS), PDSCH DMRS, and PDSCH Phase Tracking Reference Signal (PTRS), the Point A of a cell is important to know to be able to receive the DMRS and PTRS sequence correctly. Furthermore, the PUSCH DMRS and Sounding Reference Signal (SRS) used at uplink transmission, the PUSCH DMRS and PDSCH DMRS used at sidelink, all refer to CRB0 position.
3.1 DMRS
3.1.1 DMRS Configuration for PDSCH
The mapping of DMRS to physical resources for PDSCH is defined in 3GPP TS 38.211 v16.4.0 Section 7.4.1.1.2, which is shown below in the following excerpt from 3GPP TS 38.211 v16.4.0.
**********START EXCERPT FROM 3GPP TS 38.211 v16.4.0**********
**********END EXCERPT FROM 3GPP TS 38.211 v16.4.0**********
3.1.2 DMRS Configuration for PDCCH
The mapping of DMRS to physical resources for PDCCH is defined in 3GPP TS 38.211 v16.4.0 Section 7.4.1.3.2, which is shown below in the following excerpt from 3GPP TS 38.211 v16.4.0
**********START EXCERPT FROM 3GPP TS 38.211 v16.4.0**********
a
k,l
(p,μ)=βDMRSPDCCH·rl(3n+k′)
k=nN
sc
RB+4k′+1
k′=0,1,2
n=0,1, . . .
**********END EXCERPT FROM 3GPP TS 38.211 v16.4.0**********
3.2 CSI-RS
The mapping of CSI-RS to physical resources is defined in 3GPP TS 38.211 v16.4.0 Section 7.4.1.5.3, which is shown below in the following excerpt from 3GPP TS 38.211 v16.4.0.
**********START EXCERPT FROM 3GPP TS 38.211 v16.4.0**********
**********END EXCERPT FROM 3GPP TS 38.211 v16.4.0**********
The frequency domain occupation of a CSI measurement resource (e.g., a NZP-CSI-RS resource or a CSI Interference Measurement (CSI-IM) resource) is configured via RRC information element CSI-FrequencyOccupation, which is defined in 3GPP TS 38.331 v16.3.1 as shown in the following excerpt.
**********START EXCERPT FROM 3GPP TS 38.331 v16.3.1**********
CSI-FrequencyOccupation
**********END EXCERPT FROM 3GPP TS 38.331 v16.3.1**********
4 Configuration of SSB and BWP Relative to Point A P A Synchronization Signal Block (SSB) will have a non-negative frequency offset relative to Point A. So, when detecting an SSB, the UE can, by knowing this offset (given by SIB1), compute the frequency position for Point A.
Configuration perspective: The number of RBs per cell is a maximum 275 RBs, the offset indication range of SSB from point A is approximately 0-30 Megahertz (MHz) for FR1 (2199*15 khz), the BWP configuration is indicated in the Resource Indicator Value (RIV) with reference to the CRB0. For inter-frequency and intra-frequency configuration, the center frequency of SSBs is the same for intra-frequency inter-cell configuration, for inter frequency inter-cell, the center frequency of SSB is different.
In regard to SSB configuration, the following excerpts from 3GPP TS 38.331 v16.3.1 are provided.
**********START EXCERPTS FROM 3GPP TS 38.331 v16.3.1**********
SCS-SpecificCarrier
**********START NEXT EXCERPT FROM 3GPP TS 38.331 v16.3.1**********
BWP
**********END EXCERPTS FROM 3GPP TS 38.331 v16.3.1**********
Systems and methods for handling serving and non-serving cells having different frequency domain reference points for reference signal sequence generation are disclosed. In one embodiment, a method performed by a wireless communication device (WCD) comprises obtaining information about a frequency domain reference point to be used for one or more reference signals on a non-serving cell of the WCD and applying the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD to receive or transmit one or more reference signals on the non-serving cell of the WCD. In this manner, inter-cell operation is enabled for a UE for cases when a network deployment uses different reference points for reference signal sequence generation for different cells.
In one embodiment, a Synchronization Signal Block (SSB) frequency of the non-serving cell of the WCD is the same as a SSB frequency of a serving cell of the WCD. In one embodiment, the serving cell of the WCD is a Special Cell (SpCell) of the WCD, a Primary Cell (PCell) of the WCD, a Primary Secondary Cell (PSCell) of the WCD, or a Secondary Cell (SCell) of the WCD.
In one embodiment, the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD is a Point A to be used for the one or more reference signals on the non-serving cell of the WCD. In one embodiment, a center subcarrier 0 of common resource block 0, CRB0, on the non-serving cell for a respective subcarrier spacing configuration coincides with the Point A to be used for the one or more reference signals on the non-serving cell of the WCD.
In one embodiment, the frequency domain reference point for the one or more reference signals on the non-serving cell of the WCD is different than a frequency domain reference point for the one or more reference signals on a serving cell of the WCD.
In one embodiment, the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD comprises the frequency domain reference point to be used for the one or more reference signals on the non-serving cell.
In one embodiment, the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD comprises an offset between the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD and a frequency domain reference point to be used for the one or more reference signals on a serving cell of the WCD.
In one embodiment, the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD is a common frequency domain reference point to be used for the one or more reference signals on both the non-serving cell of the WCD and a serving cell of the WCD. In one embodiment, the common frequency domain reference point is a common Point A, a Point A of the non-serving cell of the WCD is different than a Point A of a serving cell of the WCD, and the common Point A is different from the Point A of the non-serving cell, different from the Point A of the serving cell, or different from both the Point A of the non-serving cell and the Point A of the serving cell.
In one embodiment, obtaining the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD comprises receiving the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD via signaling from a network node. In one embodiment, the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD is signaled as part of a serving cell configuration of a serving cell of the WCD. In one embodiment, the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD is signaled outside of a serving cell configuration of a serving cell of the WCD. In one embodiment, the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD is signaled outside of a cell group configuration associated with a serving cell of the WCD.
In one embodiment, the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD comprises a common Point A to be applied by the WCD for both the non-serving cell of the WCD and a serving cell of the WCD, and obtaining the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD comprises determining the common Point A. In one embodiment, a Point A of the non-serving cell of the WCD is different than a Point A of a serving cell of the WCD, and the common Point A is different from the Point A of the non-serving cell, different from the Point A of the serving cell, or different from both the Point A of the non-serving cell and the Point A of the serving cell.
In one embodiment, the one or more reference signals are one or more reference signals other than a SSB.
In one embodiment, the one or more reference signals comprise: (a) a Channel State Information Reference Signal (CSI-RS), (b) a Demodulation Reference Signal (DMRS) for a Physical Downlink Control Channel (PDCCH), (c) a DMRS for a Physical Downlink Shared Channel (PDSCH), (d) a DMRS for a Physical Sidelink Shared Channel (PSSCH), (e) a DMRS for a Physical Sidelink Control Channel (PSCCH), (f) any combination of two or more of (a)-(e).
Corresponding embodiments of a WCD are also disclosed. In one embodiment, a WCD is adapted to obtain information about a frequency domain reference point to be used for one or more reference signals on a non-serving cell of the WCD and apply the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD to receive or transmit one or more reference signals on the non-serving cell of the WCD.
In another embodiment, a WCD comprises one or more transmitters, one or more receivers, and processing circuitry associated with the one or more transmitters and the one or more receivers. The processing circuitry is configured to cause the WCD to obtain information about a frequency domain reference point to be used for one or more reference signals on a non-serving cell of the WCD and apply the information about the frequency domain reference point to be used for the one or more reference signals on the non-serving cell of the WCD to receive or transmit one or more reference signals on the non-serving cell of the WCD.
Embodiments of a method performed by a network node are also disclosed. In one embodiment, a method performed by a network node comprises signaling, to a WCD, information about a frequency domain reference point to be used for one or more reference signals on a non-serving cell of the WCD.
Corresponding embodiments of a network node are also disclosed. In one embodiment, a network node is adapted to signal, to a WCD, information about a frequency domain reference point to be used for one or more reference signals on a non-serving cell of the WCD.
In another embodiment, a network node comprises processing circuitry configured to cause the network node to signal, to a WCD, information about a frequency domain reference point to be used for one or more reference signals on a non-serving cell of the WCD.
Embodiments of a method performed by first network node associated to a serving cell of a WCD are also disclosed. In one embodiment, the method comprises signaling, to a second network node associated to a non-serving cell of the WCD, information about a frequency domain reference point to be used for one or more reference signals on the serving cell of the WCD. Corresponding embodiments of the first network node are also disclosed.
Embodiments of a method performed by a second network node associated to a non-serving cell of a WCD are also disclosed. In one embodiment, the method comprises receiving, from a first network node associated to a serving cell of the WCD, information about a frequency domain reference point to be used for one or more reference signals on the serving cell of the WCD and applying the information about the frequency domain reference point to be used for the one or more reference signals on the serving cell of the WCD when transmitting or receiving one or more reference signals to or from the WCD on the non-serving cell of the WCD. Corresponding embodiments of the second network node are also disclosed.
The accompanying drawing figures incorporated in and forming a part of this specification illustrate several aspects of the disclosure, and together with the description serve to explain the principles of the disclosure.
The embodiments set forth below represent information to enable those skilled in the art to practice the embodiments and illustrate the best mode of practicing the embodiments. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the disclosure and will recognize applications of these concepts not particularly addressed herein. It should be understood that these concepts and applications fall within the scope of the disclosure.
Some of the embodiments contemplated herein will now be described more fully with reference to the accompanying drawings. Other embodiments, however, are contained within the scope of the subject matter disclosed herein, the disclosed subject matter should not be construed as limited to only the embodiments set forth herein; rather, these embodiments are provided by way of example to convey the scope of the subject matter to those skilled in the art.
Generally, all terms used herein are to be interpreted according to their ordinary meaning in the relevant technical field, unless a different meaning is clearly given and/or is implied from the context in which it is used. All references to a/an/the element, apparatus, component, means, step, etc. are to be interpreted openly as referring to at least one instance of the element, apparatus, component, means, step, etc., unless explicitly stated otherwise. The steps of any methods disclosed herein do not have to be performed in the exact order disclosed, unless a step is explicitly described as following or preceding another step and/or where it is implicit that a step must follow or precede another step. Any feature of any of the embodiments disclosed herein may be applied to any other embodiment, wherever appropriate. Likewise, any advantage of any of the embodiments may apply to any other embodiments, and vice versa. Other objectives, features, and advantages of the enclosed embodiments will be apparent from the following description.
Radio Node: As used herein, a “radio node” is either a radio access node or a wireless communication device.
Radio Access Node: As used herein, a “radio access node” or “radio network node” or “radio access network node” is any node in a Radio Access Network (RAN) of a cellular communications network that operates to wirelessly transmit and/or receive signals. Some examples of a radio access node include, but are not limited to, a base station (e.g., a New Radio (NR) base station (gNB) in a Third Generation Partnership Project (3GPP) Fifth Generation (5G) NR network or an enhanced or evolved Node B (eNB) in a 3GPP Long Term Evolution (LTE) network), a high-power or macro base station, a low-power base station (e.g., a micro base station, a pico base station, a home eNB, or the like), a relay node, a network node that implements part of the functionality of a base station (e.g., a network node that implements a gNB Central Unit (gNB-CU) or a network node that implements a gNB Distributed Unit (gNB-DU)) or a network node that implements part of the functionality of some other type of radio access node.
Core Network Node: As used herein, a “core network node” is any type of node in a core network or any node that implements a core network function. Some examples of a core network node include, e.g., a Mobility Management Entity (MME), a Packet Data Network Gateway (P-GW), a Service Capability Exposure Function (SCEF), a Home Subscriber Server (HSS), or the like. Some other examples of a core network node include a node implementing an Access and Mobility Management Function (AMF), a User Plane Function (UPF), a Session Management Function (SMF), an Authentication Server Function (AUSF), a Network Slice Selection Function (NSSF), a Network Exposure Function (NEF), a Network Function (NF) Repository Function (NRF), a Policy Control Function (PCF), a Unified Data Management (UDM), or the like.
Communication Device: As used herein, a “communication device” is any type of device that has access to an access network. Some examples of a communication device include, but are not limited to: mobile phone, smart phone, sensor device, meter, vehicle, household appliance, medical appliance, media player, camera, or any type of consumer electronic, for instance, but not limited to, a television, radio, lighting arrangement, tablet computer, laptop, or Personal Computer (PC). The communication device may be a portable, hand-held, computer-comprised, or vehicle-mounted mobile device, enabled to communicate voice and/or data via a wireless or wireline connection.
Wireless Communication Device: One type of communication device is a wireless communication device, which may be any type of wireless device that has access to (i.e., is served by) a wireless network (e.g., a cellular network). Some examples of a wireless communication device include, but are not limited to: a User Equipment device (UE) in a 3GPP network, a Machine Type Communication (MTC) device, and an Internet of Things (IoT) device. Such wireless communication devices may be, or may be integrated into, a mobile phone, smart phone, sensor device, meter, vehicle, household appliance, medical appliance, media player, camera, or any type of consumer electronic, for instance, but not limited to, a television, radio, lighting arrangement, tablet computer, laptop, or PC. The wireless communication device may be a portable, hand-held, computer-comprised, or vehicle-mounted mobile device, enabled to communicate voice and/or data via a wireless connection.
Network Node: As used herein, a “network node” is any node that is either part of the RAN or the core network of a cellular communications network/system.
Transmission/Reception Point (TRP): In some embodiments, a TRP may be either a network node, a radio head, a spatial relation, or a Transmission Configuration Indicator (TCI) state. A TRP may be represented by a spatial relation or a TCI state in some embodiments. In some embodiments, a TRP may be using multiple TCI states. In some embodiments, a TRP may a part of the gNB transmitting and receiving radio signals to/from UE according to physical layer properties and parameters inherent to that element. In some embodiments, in Multiple TRP (multi-TRP) operation, a serving cell can schedule UE from two TRPs, providing better Physical Downlink Shared Channel (PDSCH) coverage, reliability and/or data rates. There are two different operation modes for multi-TRP: single Downlink Control Information (DCI) and multi-DCI. For both modes, control of uplink and downlink operation is done by both physical layer and Medium Access Control (MAC). In single-DCI mode, UE is scheduled by the same DCI for both TRPs and in multi-DCI mode, UE is scheduled by independent DCIs from each TRP.
In some embodiments, a set Transmission Points (TPs) is a set of geographically co-located transmit antennas (e.g., an antenna array (with one or more antenna elements)) for one cell, part of one cell or one Positioning Reference Signal (PRS)-only TP. TPs can include base station (eNB) antennas, Remote Radio Heads (RRHs), a remote antenna of a base station, an antenna of a PRS-only TP, etc. One cell can be formed by one or multiple TPs. For a homogeneous deployment, each TP may correspond to one cell.
In some embodiments, a set of TRPs is a set of geographically co-located antennas (e.g., an antenna array (with one or more antenna elements)) supporting TP and/or Reception Point (RP) functionality.
Note that the description given herein focuses on a 3GPP cellular communications system and, as such, 3GPP terminology or terminology similar to 3GPP terminology is oftentimes used. However, the concepts disclosed herein are not limited to a 3GPP system.
Note that, in the description herein, reference may be made to the term “cell”; however, particularly with respect to 5G NR concepts, beams may be used instead of cells and, as such, it is important to note that the concepts described herein are equally applicable to both cells and beams.
There currently exist certain challenge(s). Detection of reference signals within one cell is supported in NR Release 15 and is based on the position of Point A for that cell, which is provided to the UE for each serving cell the UE is configured with (e.g., Special Cell (SpCell) or Secondary Cell (SCell) of the Master Cell Group (MCG) or the Secondary Cell Group)SCG)). Typically, part of the information needed in sequence generation of reference signals, including the exact resource elements (time and/or frequency resources) in which the sequence is transmitted, is derived from cell level configurations provided to the UE for the serving cells. Consequently, a UE cannot detect, e.g., a Channel State Information (CSI) Reference Signal (CSI-RS) for Layer 1 (L1) measurements (e.g., L1 Reference Signal Received Power (RSRP)) and/or CSI measurements (e.g., for Channel Quality Indicator (CQI), Precoding Matrix Indictor (PMI), Rank Indicator (RI), LI, CSI-RS Resource Indicator (CRI) reporting) associated to a neighbor cell, which is needed for a proper operation of inter-cell multi-TRP (M-TRP) and L1/Layer 2 (L2) centric inter-cell mobility, to support the network with L1 measurements of neighbor cells (which are not currently active serving cells). In RRC, for example, Point A for a serving cell can be obtained in ServingCellConfigCommon, possibly obtained from SIB1, as follows:
In inter-cell operation, when a cell of physical cell ID which is different than a serving cell (e.g., SpCell or SCell) is to be supported for the UE downlink reception of a sequence transmitted from that cell, it is a problem that Point A of the neighbor cell is different from Point A of the serving cell. In this case, the base station (i.e., gNB in NR) and UE will have a different understanding of the frequency point (Point A) where the reference signal sequences start, i.e. k=0 or CRB0.
Certain aspects of the present disclosure and their embodiments may provide solutions to the aforementioned or other challenges.
Specification Change based Solution—Alignment from UE Side: In one embodiment, the UE is configured (e.g., by a network node such as a base station or gNB) with Point A information for each non-serving cell for which the UE is to perform L1 measurements (non-serving cells that are expected to be used for reception of data, e.g. PDCCH monitoring). For example, the Point A information may be added into the configuration of each non-serving cell. The configuration of each non-serving cell for which the UE is to perform L1 measurements can be provided in any of the following manners:
How to signal the Point A information for the non-serving cell(s) is subject to various embodiments. In one embodiment, the UE is configured with a frequency offset value of the non-serving cell Point A relative to the serving cell Point A. This may be done, for example, to indicate the non-serving cell Point A in the serving cell configuration. The advantage of such a solution is to avoid the repetition of multiple values, especially when the same point A can be assumed for serving cell and non-serving cells in the same frequency. With this option, it may be specified that the serving cell which Point A is used as a reference, also provides the needed physical layer configuration as well as user plane and bearer configuration in order to be able to receive data,
In one embodiment, a default configuration of Point A associated with a non-serving cell is assumed to be the same as that of the serving cell if the UE is not explicitly configured otherwise. That default value can be signaled by the absence of a parameter in the expected configuration for the non-serving cell, wherein the parameter can be the offset value of non-serving cell Point A relative to the serving cell Point A, or the parameter can be the absolute value of point A.
Implementation based Solution—Alignment from Network (e.g., gNB) Side: If Point A configuration of the non-serving cell is different from serving cell, the non-serving cell can be configured, or signaled, the Point A of the serving cell. The non-serving cell transmission towards the UE served by the serving cell then uses the serving cell Point A and the corresponding indexing.
In one embodiment, the BWP configuration to the UE of the serving cell is also indicated to the non-serving cell.
Note: The terminology “non-serving cell” is used herein to refer to a cell that can be used for data transmission and reception i.e. that can be associated to a reference signal (RS) associated to a Quasi Co-Located (QCL) source (in QCL-Info) that can be associated to at least one Transmission Configuration Indication (TCI) state the UE is configured with, wherein that “non-serving cell” is not one of the configured SpCell (according to Rel-16 definition of an SpCell) and that is not one of the configured SCells (according to Rel-16 definition of an SCell).
In one embodiment, the non-serving cell(s) is(are) in the same frequency as the SpCell, e.g. PCell or PSCell. In another embodiment, the non-serving cell(s) is(are) in the same frequency as the SCell. In another embodiment, the non-serving cell(s) is(are) in a non-serving frequency, i.e. not the same as the SpCell, not the same as an SCell. Being in the same frequency in this context can mean that they have the same SSB frequency.
Note: Even though the description provided herein refers to inter-cell M-TRP most of the time, embodiments of the solutions described herein are also applicable to L1/L2-centric inter-cell mobility, also being standardized in Rel-17. Fundamentally, the embodiments of the solutions described herein are applicable to any feature that requires the UE to detect reference signals of a non-serving cell that are not SSBs, as the SSBs do not require Point A to be detected and measured.
In one embodiment, a UE is configured by the network to support inter-cell operation, and information of the non-serving cell point A is signaled to the UE. A CSI-RS or DM-RS associated with a non-serving cell is defined as the CSI-RS/DM-RS that is configured with a QCL association of any type with an SSB which has a physical cell index (PCI) that is different from the serving cell PCI. The QCL association may be direct to the SSB, or the CSI-RS/DM-RS may be QCL with a TRS, where in turn the TRS is further QCL associated of any type with an SSB with a PCI different from the serving cell PCI. After receiving such information, the UE applies the Point A information of the non-serving cell when receiving downlink RS(s) on the non-serving cell. The downlink RS(s) may include, e.g., CSI-RS for CSI-reporting, DMRS for PDCCH, DMRS for PDSCH, PTRS for PDSCH, DMRS for PSSCH, and/or DMRS for PSCCH. The UE uses the Point A information of the non-serving cell for at least knowing the subcarrier which is defined as subcarrier zero (k=0) where the sequences start as k=0 coincides with Point A.
In one embodiment, if an CSI-RS configuration for CSI reporting is associated with the non-serving cell, the UE assumes the mapping of CSI-RS sequence with CRB indexing based on non-serving cell Point A. In on embodiment, the CSI-RS initial RB and CSI-RS bandwidth are determined based on the Point A information of the non-serving cell and, in some embodiments, startingRB, nrofRBs, and BWP-id in CSI-ResourceConfig, with BWP-id configuration associated with serving cell configuration.
In a further embodiment, if a non-serving cell is configured to the UE and the same Point A as for the serving cell is used for this non-serving cell, then Point A of the non-serving cell is not signaled to the UE. The UE then understands that the Point A can be assumed to be the same in the serving cell and the non-serving cell. Hence, in one embodiment, the default is that the UE can assume the same Point A, unless configured otherwise.
In an implementation-based solution from the network side, for the case that the non-serving cell and serving cell use different Point As, the Point A information of non-serving cell is not indicated to UE. Instead, the non-serving cell is informed by inter-gNB signaling or network configuration about the Point A of the serving cell for the UE that will be served by the non-serving cell. The non-serving cell then transmits RS(s) to the UE using the Point A of the UEs serving cell instead of the “true” Point A of the non-serving cell. Hence, from the UE perspective, it seems like the serving and non-serving cells have the same Point A, even though they do not. The transmission from non-serving cell to the UE then applies the Point A of the serving cell. This transmission may include, e.g., CSI-RS for CSI-reporting, DMRS for PDCCH, DMRS for PDSCH, DMRS for PSSCH, and/or DMRS for PSCCH.
In a further embodiment, the ARFCN of a non-serving cell is configured to the UE.
Certain embodiments may provide one or more of the following technical advantage(s). Embodiments described herein may allow support of inter-cell operation for a UE also for the cases when a network deployment use different Point As for different cells. Embodiments described herein may enable the UE to perform CSI-RS measurements for these non-serving cells with different Point As and perform L1 reporting to support L1/L2-centric inter-cell mobility and/or inter-cell multi-TRP operation. In addition to this, embodiments described herein may enable other features requiring these measurements such as CSI-RS measurements for L3 measurement reporting, Radio Link Monitoring (RLM) based on CSI-RSs for non-serving cells, and Beam Failure Detection monitoring based on CSI-RSs for non-serving cells.
The base stations 202 and the low power nodes 206 provide service to wireless communication devices (WCDs) 212-1 through 212-5 in the corresponding cells 204 and 208. The WCDs 212-1 through 212-5 are generally referred to herein collectively as WCDs 212 and individually as WCD 212. In the following description, the WCDs 212 are oftentimes UEs and as such sometimes referred to as UEs 212, but the present disclosure is not limited thereto.
In the following, embodiments related to the physical layer are mainly described, e.g., in terms of reference signal mapping, Point A indication, and UE capability.
In one embodiment, non-serving cell Point A or offset to serving cell Point A is signaled to the UE 212, e.g., via higher layer configuration (e.g., via RRC signaling). The UE 212 assumes a mapping of a reference signal(s) from the non-serving cell using CRB indexing based on Point A of the non-serving cell. With this approach, the orthogonality of the reference signals in each cell is maintained, and more UEs can be scheduled on non-serving cell on same frequency resources at the same time. An illustration of one example of this embodiment with DMRS and CSI-RS transmission is shown in
In another embodiment, the CRB0 for resource allocation is aligned with the lowest (lowest to avoid negative k value) Point A in frequency of the serving cell and non-serving cell, and a new indexing is indicated for interCell-CRB. Indexing of InterCell-CRB is used when mapping the reference signal on the corresponding RBs for serving cell and non-serving cell. The common Point A of the serving cell and the non-serving cell can also be explicitly signaled to UE 212 via higher layer configuration. The UE 212 applies the mapping based on the common Point A. With this approach, the orthogonality of reference signals on the same RE from different cells is maintained, which increases the possibility of high data throughput of the serving UE. An illustration of one example of this embodiment with DMRS and CSI-RS transmission is shown in
In one embodiment, switching between the above two methods (i.e., between the method of
In one embodiment, the InterCell-CRB is only applied on mapping of reference signals. The BWP configuration associated with a non-serving cell uses the CRB0 of the serving cell.
In one embodiment, reference signal associated with non-serving cell is allowed to apply negative integer value of k, with k=0 referring to CRB 0 of serving cell.
In one embodiment, an offset to point A for the non-serving cell is explicitly indicated to the UE 212.
From resource grid perspective, even with different Point A positions, the resource grid is aligned among the serving and non-serving cells. The offset or the difference between the Point A of the serving cell and the Point A of the non-serving cell is, in one embodiment, a multiple of X RBs (e.g., X=4) in order to align the common resource grid if serving cell and non-serving cells are of same numerology. The indexing of CRB for different serving cell may be different because of different Point A configuration, but the grid for RBG group maintains the same.
In one embodiment, the network (e.g., network node(s) or gNB(s)) align the Point A of non-serving cell with the Point A of the serving cell when transmitting downlink signals to the UE 212. In one embodiment, this is done by a network node (e.g., base station 202 such as a gNB) that serves the serving cell of the UE 212 sending the Point A information of the serving cell to a network node (e.g., base station 202 such as a gNB) that serves the non-serving cell of the UE 212, where the network node that serves the non-serving cell then applies the Point A of the serving cell of the UE 212 when transmitting one or more downlink reference signals to the UE 212 on the non-serving cell, or vice versa. In one embodiment, the BWP configuration of serving cell is also transmitted to the non-serving cell such that the CSI-RS is mapped accordingly. An illustration of one example of this embodiment with DMRS and CSI-RS transmission is shown in
One example procedure for this embodiment is illustrated in
Note: Although the description herein focuses on downlink, the same concepts are also applicable for uplink and further for sidelink.
Non-serving cell(s) belonging to a different band or different numerology can be a prerequisite for a different Point As being configured to the UE 212. A UE that reports supporting carrier aggregation of X carriers in its capability information may expect to be configured with maximum X-Y carriers, if it is also configured with inter-cell M-TRP with Y non-serving cells.
In this example, functions 1010 of the network node 900 described herein (e.g., one or more functions of a network node, base station, or gNB described herein, e.g., with respect to
In some embodiments, a computer program including instructions which, when executed by at least one processor, causes the at least one processor to carry out the functionality of the network node 900 or a node (e.g., a processing node 1000) implementing one or more of the functions 1010 of the network node 900 in a virtual environment according to any of the embodiments described herein is provided. In some embodiments, a carrier comprising the aforementioned computer program product is provided. The carrier is one of an electronic signal, an optical signal, a radio signal, or a computer readable storage medium (e.g., a non-transitory computer readable medium such as memory).
The transceivers 1206 are also referred to herein as radio circuitry. In some embodiments, the functionality of the WCD 212 described above may be fully or partially implemented in software that is, e.g., stored in the memory 1204 and executed by the processor(s) 1202. Note that the WCD 212 may include additional components not illustrated in
In some embodiments, a computer program including instructions which, when executed by at least one processor, causes the at least one processor to carry out the functionality of the WCD 212 according to any of the embodiments described herein is provided. In some embodiments, a carrier comprising the aforementioned computer program product is provided. The carrier is one of an electronic signal, an optical signal, a radio signal, or a computer readable storage medium (e.g., a non-transitory computer readable medium such as memory).
With reference to
The telecommunication network 1400 is itself connected to a host computer 1416, which may be embodied in the hardware and/or software of a standalone server, a cloud-implemented server, a distributed server, or as processing resources in a server farm. The host computer 1416 may be under the ownership or control of a service provider, or may be operated by the service provider or on behalf of the service provider. Connections 1418 and 1420 between the telecommunication network 1400 and the host computer 1416 may extend directly from the core network 1404 to the host computer 1416 or may go via an optional intermediate network 1422. The intermediate network 1422 may be one of, or a combination of more than one of, a public, private, or hosted network; the intermediate network 1422, if any, may be a backbone network or the Internet; in particular, the intermediate network 1422 may comprise two or more sub-networks (not shown).
The communication system of
Example implementations, in accordance with an embodiment, of the UE, base station, and host computer discussed in the preceding paragraphs will now be described with reference to
The communication system 1500 further includes a base station 1518 provided in a telecommunication system and comprising hardware 1520 enabling it to communicate with the host computer 1502 and with the UE 1514. The hardware 1520 may include a communication interface 1522 for setting up and maintaining a wired or wireless connection with an interface of a different communication device of the communication system 1500, as well as a radio interface 1524 for setting up and maintaining at least a wireless connection 1526 with the UE 1514 located in a coverage area (not shown in
The communication system 1500 further includes the UE 1514 already referred to. The UE's 1514 hardware 1534 may include a radio interface 1536 configured to set up and maintain a wireless connection 1526 with a base station serving a coverage area in which the UE 1514 is currently located. The hardware 1534 of the UE 1514 further includes processing circuitry 1538, which may comprise one or more programmable processors, ASICs, FPGAs, or combinations of these (not shown) adapted to execute instructions. The UE 1514 further comprises software 1540, which is stored in or accessible by the UE 1514 and executable by the processing circuitry 1538. The software 1540 includes a client application 1542. The client application 1542 may be operable to provide a service to a human or non-human user via the UE 1514, with the support of the host computer 1502. In the host computer 1502, the executing host application 1512 may communicate with the executing client application 1542 via the OTT connection 1516 terminating at the UE 1514 and the host computer 1502. In providing the service to the user, the client application 1542 may receive request data from the host application 1512 and provide user data in response to the request data. The OTT connection 1516 may transfer both the request data and the user data. The client application 1542 may interact with the user to generate the user data that it provides.
It is noted that the host computer 1502, the base station 1518, and the UE 1514 illustrated in
In
The wireless connection 1526 between the UE 1514 and the base station 1518 is in accordance with the teachings of the embodiments described throughout this disclosure. One or more of the various embodiments improve the performance of OTT services provided to the UE 1514 using the OTT connection 1516, in which the wireless connection 1526 forms the last segment.
A measurement procedure may be provided for the purpose of monitoring data rate, latency, and other factors on which the one or more embodiments improve. There may further be an optional network functionality for reconfiguring the OTT connection 1516 between the host computer 1502 and the UE 1514, in response to variations in the measurement results. The measurement procedure and/or the network functionality for reconfiguring the OTT connection 1516 may be implemented in the software 1510 and the hardware 1504 of the host computer 1502 or in the software 1540 and the hardware 1534 of the UE 1514, or both. In some embodiments, sensors (not shown) may be deployed in or in association with communication devices through which the OTT connection 1516 passes; the sensors may participate in the measurement procedure by supplying values of the monitored quantities exemplified above, or supplying values of other physical quantities from which the software 1510, 1540 may compute or estimate the monitored quantities. The reconfiguring of the OTT connection 1516 may include message format, retransmission settings, preferred routing, etc.; the reconfiguring need not affect the base station 1518, and it may be unknown or imperceptible to the base station 1518. Such procedures and functionalities may be known and practiced in the art. In certain embodiments, measurements may involve proprietary UE signaling facilitating the host computer 1502's measurements of throughput, propagation times, latency, and the like. The measurements may be implemented in that the software 1510 and 1540 causes messages to be transmitted, in particular empty or ‘dummy’ messages, using the OTT connection 1516 while it monitors propagation times, errors, etc.
Any appropriate steps, methods, features, functions, or benefits disclosed herein may be performed through one or more functional units or modules of one or more virtual apparatuses. Each virtual apparatus may comprise a number of these functional units. These functional units may be implemented via processing circuitry, which may include one or more microprocessor or microcontrollers, as well as other digital hardware, which may include Digital Signal Processor (DSPs), special-purpose digital logic, and the like. The processing circuitry may be configured to execute program code stored in memory, which may include one or several types of memory such as Read Only Memory (ROM), Random Access Memory (RAM), cache memory, flash memory devices, optical storage devices, etc. Program code stored in memory includes program instructions for executing one or more telecommunications and/or data communications protocols as well as instructions for carrying out one or more of the techniques described herein. In some implementations, the processing circuitry may be used to cause the respective functional unit to perform corresponding functions according one or more embodiments of the present disclosure.
While processes in the figures may show a particular order of operations performed by certain embodiments of the present disclosure, it should be understood that such order is exemplary (e.g., alternative embodiments may perform the operations in a different order, combine certain operations, overlap certain operations, etc.).
Some example embodiments of the present disclosure are as follows:
Embodiment 1: A method performed by a wireless communication device, WCD, (212), the method comprising: obtaining (400, 600A, or 600B) Point A information to be used for one or more reference signals on a non-serving cell of the WCD (212), the Point A information being information about a frequency domain reference point; and applying (402, 602) the Point A information to receive (or transmit) one or more reference signals on the non-serving cell of the WCD (212).
Embodiment 2: The method of embodiment 1 wherein a Point A of the non-serving cell of the WCD (212) is different than a Point A of a serving cell of the WCD (212).
Embodiment 3: The method of embodiment 1 or 2 wherein the Point A information comprises a Point A of the non-serving cell.
Embodiment 4: The method of embodiment 1 or 2 wherein the Point A information comprises an offset between a Point A of the non-serving cell and a Point A of a serving cell of the WCD (212).
Embodiment 5: The method of embodiment 1 or 2 wherein the Point A information comprises a common Point A to be applied by the WCD (212) for both the non-serving cell of the WCD (212) and a serving cell of the WCD (212).
Embodiment 6: The method of embodiment 5 wherein a Point A of the non-serving cell of the WCD (212) is different than a Point A of a serving cell of the WCD (212), and the common Point A is different from the Point A of the non-serving cell, different from the Point A of the serving cell, or different from both the Point A of the non-serving cell and the Point A of the serving cell.
Embodiment 7: The method of any of embodiments 1 to 6 wherein obtaining (400, 600B) the Point A information to be used for one or more reference signals on a non-serving cell of the WCD (212) comprises receiving (400, 600B) the Point A information via signaling from a network node.
Embodiment 8: The method of embodiment 7 wherein the Point A information is signaled as part of a serving cell configuration of a serving cell of the WCD (212).
Embodiment 9: The method of embodiment 7 wherein the Point A information is signaled outside of a serving cell configuration of a serving cell of the WCD (212).
Embodiment 10: The method of embodiment 1 or 2 wherein the Point A information comprises a common Point A to be applied by the WCD (212) for both the non-serving cell of the WCD (212) and a serving cell of the WCD (212), and obtaining (600B) the Point A information to be used for one or more reference signals on a non-serving cell of the WCD (212) comprises determining (600B) the common Point A information.
Embodiment 11: The method of embodiment 10 wherein a Point A of the non-serving cell of the WCD (212) is different than a Point A of a serving cell of the WCD (212), and the common Point A is different from the Point A of the non-serving cell, different from the Point A of the serving cell, or different from both the Point A of the non-serving cell and the Point A of the serving cell.
Embodiment 12: The method of any of embodiments 1 to 11 wherein the one or more reference signals are one or more reference signals other than SSB.
Embodiment 13: The method of any of embodiments 1 to 12 wherein the one or more reference signals comprise CSI-RS, DMRS for PDCCH, DMRS for PDSCH, DMRS for PSSCH, and/or DMRS for PSSCH.
Embodiment 14: The method of any of the previous embodiments, further comprising: providing user data; and forwarding the user data to a host computer via the transmission to the base station.
Embodiment 15: A method performed by network node, the method comprising: signaling (400, 600B), to a WCD (212), Point A information to be used for one or more reference signals on a non-serving cell of the WCD (212), the Point A information being information about a frequency domain reference point.
Embodiment 16: The method of embodiment 15 wherein a Point A of the non-serving cell of the WCD (212) is different than a Point A of a serving cell of the WCD (212).
Embodiment 17: The method of embodiment 15 or 16 wherein the Point A information comprises a Point A of the non-serving cell.
Embodiment 18: The method of embodiment 15 or 16 wherein the Point A information comprises an offset between a Point A of the non-serving cell and a Point A of a serving cell of the WCD (212).
Embodiment 19: The method of embodiment 15 or 16 wherein the Point A information comprises a common Point A to be applied by the WCD (212) for both the non-serving cell of the WCD (212) and a serving cell of the WCD (212).
Embodiment 20: The method of embodiment 19 wherein a Point A of the non-serving cell of the WCD (212) is different than a Point A of a serving cell of the WCD (212), and the common Point A is different from the Point A of the non-serving cell, different from the Point A of the serving cell, or different from both the Point A of the non-serving cell and the Point A of the serving cell.
Embodiment 21: The method of any of embodiments 15 to 20 wherein the Point A information is signaled as part of a serving cell configuration of a serving cell of the WCD (212).
Embodiment 22: The method of any of embodiments 15 to 20 wherein the Point A information is signaled outside of a serving cell configuration of a serving cell of the WCD (212).
Embodiment 23: The method of any of embodiments 15 to 22 wherein the Point A information is for transmission (or reception) of one or more reference signals to (or from) the WCD (212) one the non-serving cell.
Embodiment 24: The method of embodiment 23 wherein the one or more reference signals are one or more reference signals other than SSB.
Embodiment 25: The method of embodiment 23 or 24 wherein the one or more reference signals comprise CSI-RS, DMRS for PDCCH, DMRS for PDSCH, DMRS for PSSCH, and/or DMRS for PSCCH.
Embodiment 26: A method performed by first network node associated to a serving cell of a WCD (212), the method comprising: signaling (800), to a second network node associated to a non-serving cell of the WCD (212), Point A information of the serving cell of the WCD (212), the Point A information being information about a frequency domain reference point.
Embodiment 27: A method performed by second network node associated to a non-serving cell of a WCD (212), the method comprising: receiving (800), from a first network node associated to a serving cell of the WCD (212), Point A information of the serving cell of the WCD (212), the Point A information being information about a frequency domain reference point; and applying (802) the Point A information of the serving cell of the WCD (212) when transmitting (or receiving) one or more reference signals to (or from) the WCD (212) on the non-serving cell of the WCD (212).
Embodiment 28: The method of embodiment 27 wherein the one or more reference signals are one or more reference signals other than SSB.
Embodiment 29: The method of embodiment 27 or 28 wherein the one or more reference signals comprise CSI-RS, DMRS for PDCCH, DMRS for PDSCH, DMRS for PSSCH, and/or DMRS for PSSCH.
Embodiment 30: The method of any of the previous embodiments, further comprising: obtaining user data; and forwarding the user data to a host computer or a wireless communication device.
Embodiment 31: A wireless communication device comprising: processing circuitry configured to perform any of the steps of any of the Group A embodiments; and power supply circuitry configured to supply power to the wireless communication device.
Embodiment 32: A base station comprising: processing circuitry configured to perform any of the steps of any of the Group B embodiments; and power supply circuitry configured to supply power to the base station.
Embodiment 33: A User Equipment, UE, comprising: an antenna configured to send and receive wireless signals; radio front-end circuitry connected to the antenna and to processing circuitry, and configured to condition signals communicated between the antenna and the processing circuitry; the processing circuitry being configured to perform any of the steps of any of the Group A embodiments; an input interface connected to the processing circuitry and configured to allow input of information into the UE to be processed by the processing circuitry; an output interface connected to the processing circuitry and configured to output information from the UE that has been processed by the processing circuitry; and a battery connected to the processing circuitry and configured to supply power to the UE.
Embodiment 34: A communication system including a host computer comprising: processing circuitry configured to provide user data; and a communication interface configured to forward the user data to a cellular network for transmission to a User Equipment, UE; wherein the cellular network comprises a base station having a radio interface and processing circuitry, the base station's processing circuitry configured to perform any of the steps of any of the Group B embodiments.
Embodiment 35: The communication system of the previous embodiment further including the base station.
Embodiment 36: The communication system of the previous 2 embodiments, further including the UE, wherein the UE is configured to communicate with the base station.
Embodiment 37: The communication system of the previous 3 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application, thereby providing the user data; and the UE comprises processing circuitry configured to execute a client application associated with the host application.
Embodiment 38: A method implemented in a communication system including a host computer, a base station, and a User Equipment, UE, the method comprising: at the host computer, providing user data; and at the host computer, initiating a transmission carrying the user data to the UE via a cellular network comprising the base station, wherein the base station performs any of the steps of any of the Group B embodiments.
Embodiment 39: The method of the previous embodiment, further comprising, at the base station, transmitting the user data.
Embodiment 40: The method of the previous 2 embodiments, wherein the user data is provided at the host computer by executing a host application, the method further comprising, at the UE, executing a client application associated with the host application.
Embodiment 41: A User Equipment, UE, configured to communicate with a base station, the UE comprising a radio interface and processing circuitry configured to perform the method of the previous 3 embodiments.
Embodiment 42: A communication system including a host computer comprising: processing circuitry configured to provide user data; and a communication interface configured to forward user data to a cellular network for transmission to a User Equipment, UE; wherein the UE comprises a radio interface and processing circuitry, the UE's components configured to perform any of the steps of any of the Group A embodiments.
Embodiment 43: The communication system of the previous embodiment, wherein the cellular network further includes a base station configured to communicate with the UE.
Embodiment 44: The communication system of the previous 2 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application, thereby providing the user data; and the UE's processing circuitry is configured to execute a client application associated with the host application.
Embodiment 45: A method implemented in a communication system including a host computer, a base station, and a User Equipment, UE, the method comprising: at the host computer, providing user data; and at the host computer, initiating a transmission carrying the user data to the UE via a cellular network comprising the base station, wherein the UE performs any of the steps of any of the Group A embodiments.
Embodiment 46: The method of the previous embodiment, further comprising at the UE, receiving the user data from the base station.
Embodiment 47: A communication system including a host computer comprising: communication interface configured to receive user data originating from a transmission from a User Equipment, UE, to a base station; wherein the UE comprises a radio interface and processing circuitry, the UE's processing circuitry configured to perform any of the steps of any of the Group A embodiments.
Embodiment 48: The communication system of the previous embodiment, further including the UE.
Embodiment 49: The communication system of the previous 2 embodiments, further including the base station, wherein the base station comprises a radio interface configured to communicate with the UE and a communication interface configured to forward to the host computer the user data carried by a transmission from the UE to the base station.
Embodiment 50: The communication system of the previous 3 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application; and the UE's processing circuitry is configured to execute a client application associated with the host application, thereby providing the user data.
Embodiment 51: The communication system of the previous 4 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application, thereby providing request data; and the UE's processing circuitry is configured to execute a client application associated with the host application, thereby providing the user data in response to the request data.
Embodiment 52: A method implemented in a communication system including a host computer, a base station, and a User Equipment, UE, the method comprising: at the host computer, receiving user data transmitted to the base station from the UE, wherein the UE performs any of the steps of any of the Group A embodiments.
Embodiment 53: The method of the previous embodiment, further comprising, at the UE, providing the user data to the base station.
Embodiment 54: The method of the previous 2 embodiments, further comprising: at the UE, executing a client application, thereby providing the user data to be transmitted; and at the host computer, executing a host application associated with the client application.
Embodiment 55: The method of the previous 3 embodiments, further comprising: at the UE, executing a client application; and at the UE, receiving input data to the client application, the input data being provided at the host computer by executing a host application associated with the client application; wherein the user data to be transmitted is provided by the client application in response to the input data.
Embodiment 56: A communication system including a host computer comprising a communication interface configured to receive user data originating from a transmission from a User Equipment, UE, to a base station, wherein the base station comprises a radio interface and processing circuitry, the base station's processing circuitry configured to perform any of the steps of any of the Group B embodiments.
Embodiment 57: The communication system of the previous embodiment further including the base station.
Embodiment 58: The communication system of the previous 2 embodiments, further including the UE, wherein the UE is configured to communicate with the base station.
Embodiment 59: The communication system of the previous 3 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application; and the UE is configured to execute a client application associated with the host application, thereby providing the user data to be received by the host computer.
Embodiment 60: A method implemented in a communication system including a host computer, a base station, and a User Equipment, UE, the method comprising: at the host computer, receiving, from the base station, user data originating from a transmission which the base station has received from the UE, wherein the UE performs P any of the steps of any of the Group A embodiments.
Embodiment 61: The method of the previous embodiment, further comprising at the base station, receiving the user data from the UE.
Embodiment 62: The method of the previous 2 embodiments, further comprising at the base station, initiating a transmission of the received user data to the host computer.
Those skilled in the art will recognize improvements and modifications to the embodiments of the present disclosure. All such improvements and modifications are considered within the scope of the concepts disclosed herein.
This application claims the benefit of provisional patent application Ser. No. 63/164,878, filed Mar. 23, 2021, the disclosure of which is hereby incorporated herein by reference in its entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/IB2022/052675 | 3/23/2022 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 63164878 | Mar 2021 | US |
