NR V2X resource pool design

Abstract

In the field of wireless communication systems or networks, a design of resource pools is described, as resource pools may be used in sidelink communications between users of the wireless communication system, such as in V2X applications. In particular, in view of the advantages defined by the NR 5G standard, an improved resource pool design is proposed, such as a resource pool for use in sidelink communications to be used in V2X services.

Description

[0001] The present invention relates to the field of wireless communication systems or networks, and more particularly to the design of resource pools, as may be used in sidelink communications between users of a wireless communication system, such as in V2X applications.

[0002] Figure 1 1 is a schematic diagram of an example of a terrestrial wireless network 100 including a core network 102 and a radio access network 104. The radio access network 104 may include a plurality of base stations gNB1 to gNB5, each serving a specific area around the base station schematically represented by respective cells 1061 to 1065. The base station is provided to serve users within the cell. The term "base station (BS)" refers to a gNB in ​​a 5G network, an eNB in ​​UMTS / LTE / LTE-A / LTE-APro, or simply a BS in other mobile communication standards. A user may be a fixed device or a mobile device. In addition, the wireless communication system may also be accessed through a mobile or fixed IoT device connected to a base station or a user. Mobile devices or IoT devices may include physical devices, ground vehicles such as robots or cars, aircraft such as manned or unmanned aerial vehicles (UAVs), the latter also referred to as drones, buildings and other items or devices having embedded electronics, software, sensors, actuators, etc., and network connectivity that enables these devices to collect and exchange data on existing network infrastructure. Figure 1 An exemplary view of only five cells is shown, however, the wireless communication system may include many more such cells. Figure 1 Two users UE1 and UE2, also referred to as user equipment UE, are shown in cell 1062 and served by base station gNB2. Another user UE3 is shown in cell 1064 served by base station gNB4. Arrows 1081, 1082 and 1083 schematically represent uplink / downlink connections for transmitting data from users UE1, UE2 and UE3 to base stations gNB2, gNB4 or for transmitting data from base stations gNB2, gNB4 to users UE1, UE2, UE3. In addition, Figure 1 Two IoT devices 1101 and 1102 are shown in a cell 1064, which may be fixed or mobile devices. IoT device 1101 accesses the wireless communication system via base station gNB4 to receive and send data, as schematically indicated by arrow 1121. IoT device 1102 accesses the wireless communication system via user UE3, as schematically indicated by arrow 1122. Each base station gNB1 to gNB5 may be connected to the core network 102, for example via an S1 interface or an Xn interface, via corresponding backhaul links 1141 to 1145, which are connected to the core network 102 via the S1 interface or the Xn interface. Figure 1The core network 102 may be connected to one or more external networks. In addition, some or all of the base stations gNB1 to gNB5 may be connected to each other via respective backhaul links 1161 to 1165, for example, via the S1 or X2 interface or XN interface in NR. The backhaul links 1161 to 1165 are connected to each other via the S1 or X2 interface or XN interface in NR. Figure 1 This is schematically represented by arrows pointing to “gNBs”.

[0003] For data transmission, a physical resource grid may be used. The physical resource grid may include a set of resource elements to which various physical channels and physical signals are mapped. For example, a physical channel may include a physical downlink and uplink shared channel (PDSCH, PUSCH) carrying user-specific data (also referred to as downlink and uplink payload data), a physical broadcast channel (PBCH) carrying, for example, a master information block (MIB) and a system information block (SIB), and a physical downlink and uplink control channel (PDCCH, PUCCH) carrying, for example, downlink control information (DCI). For the uplink, the physical channel may also include a physical random access channel (PRACH or RACH), which is used by the UE to access the network once the UE is synchronized and obtains the MIB and SIB. The physical signal may include a reference signal or symbol (RS), a synchronization signal, etc. The resource grid may include a frame or radio frame having a specific duration in the time domain and a given bandwidth in the frequency domain. A frame may have a certain number of subframes of a predetermined length. Each subframe may include 6 or 7 OFDM symbols of two slots, depending on the cyclic prefix (CP) length. A frame may also include a smaller number of OFDM symbols, for example, when utilizing a shortened transmission time interval (sTTI) or a mini-slot / non-slot based frame structure that includes only a few OFDM symbols.

[0004] The wireless communication system may be any single tone or multi-carrier system using frequency division multiplexing, such as an orthogonal frequency division multiplexing (OFDM) system, an orthogonal frequency division multiple access (OFDMA) system, or any other IFFT-based signal with or without CP, such as DFT-s-OFDM. Other waveforms may be used, such as non-orthogonal waveforms for multiple access, such as filter bank multi-carrier (FBMC), generalized frequency division multiplexing (GFDM), or universal filtering multi-carrier (UFMC). The wireless communication system may operate, for example, according to the LTE-Advanced pro standard or the 5G or NR (new air interface) standard.

[0005] Figure 1The wireless network or communication system depicted in the figure may be a heterogeneous network with different coverage networks, such as a macrocell network in which each macrocell includes macro base stations such as base stations gNB1 to gNB5 and small cell base stations such as femto base stations or pico base stations ( Figure 1 A network not shown in FIG.

[0006] In addition to the above-mentioned terrestrial wireless networks, there are also non-terrestrial wireless communication networks, including spaceborne transceivers such as satellites and / or airborne transceivers such as drone systems. Non-terrestrial wireless communication networks or systems can be based on the above reference Figure 1 The described terrestrial systems operate in a similar manner, for example according to the LTE-advanced pro standard or the 5G or NR (New Radio) standard.

[0007] In a mobile communication network, for example, in a network similar to the one referenced above Figure 1 In the described network, such as an LTE or 5G / NR network, there may be UEs that communicate directly with each other via one or more sidelink (SL) channels, for example, using a PC5 interface. UEs that communicate directly with each other via sidelinks may include vehicles that communicate directly with other vehicles (V2V communication), vehicles that communicate with other entities of a wireless communication network (V2X communication), other entities being, for example, roadside entities such as traffic lights, traffic signs, or pedestrians. Other UEs may not be vehicle-related UEs and may include any of the above-mentioned devices. Such devices may also communicate directly with each other (D2D communication) using SL channels.

[0008] When considering two UEs communicating directly with each other via a sidelink, the two UEs may be served by the same base station, i.e., the two UEs may be in a base station such as Figure 1 ) is within the coverage area of ​​one of the base stations shown in . This is referred to as an "in-coverage" scenario. In this context, the term "served by the BS" means that the UE can utilize reference symbols broadcast by the BS, such as synchronization signals, to indirectly synchronize to another UE, or the BS organizes a set or pool of resources to be used by the two UEs for direct communication for transmission and reception. According to other examples, two UEs communicating via a side link may not be served by a base station, which is referred to as an "out-of-coverage" scenario. Note that "out-of-coverage" does not mean that the two UEs are not Figure 1 Instead, it means that these UEs are not connected to the base station, for example, they are not yet in the RRC connected state. Another scenario is called a "partial coverage" scenario, according to which one of the two UEs communicating with each other via the sidelink is served by the base station, while the other UE is not served by the base station.

[0009] Figure 2is a schematic representation of a situation in which two UEs communicating directly with each other are both within the coverage of a base station. The base station gNB has a coverage area schematically represented by a circle 200, which substantially corresponds to Figure 1 UEs communicating directly with each other include a first vehicle 202 and a second vehicle 204 within a coverage area 200 of a base station gNB. Both vehicles 202, 204 are connected to the base station gNB and, in addition, are directly connected to each other via a PC5 interface. The gNB assists in scheduling and / or interference management of V2V traffic via control signaling over the Uu interface, which is the radio interface between the base station and the UE. The gNB allocates resources to be used for V2V communication via a sidelink. This configuration is also referred to as a Mode 3 configuration.

[0010] Figure 3 is a schematic representation of a situation where the UE is not within the coverage of the base station, i.e., although the individual UEs communicating directly with each other may be physically located within a cell of the wireless communication network, they are not connected to the base station. Three vehicles 206, 208 and 210 are shown communicating directly with each other via sidelinks, for example using a PC5 interface. Scheduling and / or interference management of V2V traffic is based on algorithms implemented between the vehicles. This configuration is also referred to as a Mode 4 configuration. As described above, as an out-of-coverage scenario Figure 3 The scenario in does not mean that the corresponding Mode 4 UE is outside the coverage area 200 of the base station, but means that the corresponding Mode 4 UE is not served by the base station or is not connected to the base station in the coverage area. Therefore, the following scenarios may exist: Figure 2 In the coverage area 200 shown in FIG. 1 , in addition to the mode 3 UEs 202 and 204 , there are also mode 4 UEs 206 , 208 , and 210 .

[0011] In order to communicate between two or more UEs over a corresponding sidelink interface, a resource pool may be defined. The resource pool includes a plurality of resources that may be used by the UE for corresponding transmission and reception on the sidelink. According to a conventional approach, for example, as defined in the LTE V2X standard, a resource pool is defined as a set of time and frequency resources in the uplink spectrum that are reserved for vehicle communications only.

[0012] Figure 4 An example of a resource pool defined across time and frequency is shown. Figure 4 The top portion of FIG. 1 shows the resources in time and frequency available at the base station for communicating with one or more UEs connected to the base station. From these available resources, a subset of resources is selected to define a resource pool. Figure 4As shown in , across the time domain, the base station provides a subframe bitmap of variable length to the UE. The bitmap indicates whether the resources at a specific time are used for the resource pool (indicated by "1" in the bitmap), and which resources are not used for the resource pool (indicated by "0" in the bitmap). Figure 4 The bitmap may be repeated across the duration of the resource pool, as indicated by the upper vertical dashed line. The resource pool includes data and control subchannels, which are defined across frequency based on the subframes indicated by the bitmap. Data subchannels are defined using a set of parameters including the number of subchannels and resource blocks (RBs), indexes, and size of the subchannels in RBs. Control subchannels are also defined based on the subframes indicated in the bitmap, however, only the starting RB index is specified since control channels span only two RBs in frequency. Figure 4 In the example of FIG. 3 , it can be seen that from the block 310 of available resources, a resource pool 312 is selected, including two control subchannels 314a and 314b and two data subchannels 316a and 316b. Figure 4 In the example of , the control subchannel is indicated by specifying the corresponding starting resource blocks in each selected subframe, i.e., the first and sixth RBs in each subframe having a size of 2 RBs in frequency, and the data subchannels are described by their corresponding starting RBs, i.e., the third and eighth RBs in each subframe having a size of three RBs in frequency.

[0013] Therefore, according to the conventional method, the resource pool may contain a minimum of two subchannels, one for control information, such as PSCCH, and one for data, such as PSSCH. At a given transmission time interval TTI or subframe, the transmitting UE broadcasts sidelink control information SCI in the control channel, followed by data in the same subframe. The SCI will point to the resources within the subframe on which the data will be sent, and the receiving UE will listen to the control subchannel so that it can know where to receive the data when it receives the SCI.

[0014] There may be multiple resource pools in each configuration given by the BS to the UE. Each resource pool may involve different purposes or situations. For example, there may be a dedicated transmission resource pool, a reception resource pool, and a so-called exception resource pool. For example, when considering the case of a transmission resource pool, the base station may divide its coverage area into multiple zones, and may provide different transmission resource pools for UEs located in each zone according to the situation in each zone. For example, the base station may divide the coverage area into eight zones, and Figure 5 is a schematic representation of a cell, similar to the above reference Figure 1 The cell in the network described above is divided into a plurality of zones using such a division method. The cell consists of a coverage area 200 of a base station gNB (see Figure 3) is defined. The coverage area 200 is divided into a plurality of zones, each zone having a corresponding zone ID (zoneID) associated therewith. The coverage area 200 is subdivided into eight zones 2000 to 2007, which have been assigned zone identifiers zoneID0 to zoneID7. Note that Figure 5 This is only an example of how to separate the coverage area 200 into zones, and according to other examples, more or fewer zones and zones of other shapes may be defined. The zones may be defined with respect to corresponding latitude and longitude coordinates, and these zones may also be referred to as V2X zones for V2X communication. Each of these zones has a single or unique transmit resource pool associated with it, as schematically shown at 312. The transmit resource pool for UEs in one zone acts as one of many receive resource pools for UEs in other zones. A single exception pool is used by all UEs across zones only during a handover from one base station gNB to another base station gNB. The resource pool 312 for each zone may indicate for each zone the resources allocated for sidelink communications between UEs located in the zone. UEs in the same zone may have been assigned corresponding zoneIDs. The resource pool 312 may indicate, for example, the frequency / time that may be used by UEs in a given zone for sidelink communications with other UEs. According to other examples, the coverage area 200 may define a single zone. In the case of a flying UE, the zone concept of longitude and latitude may be extended to 3D, for example, using an altitude parameter.

[0015] A resource pool may be preconfigured in each onboard modem, and when the UE is out of coverage and has not yet entered the coverage of the base station, the preconfigured resource pool may be used. In the event that the UE enters the coverage of the base station, the preconfiguration may be updated, and depending on the state of the UE, connected or idle, in coverage or out of coverage, a suitable resource pool configuration may be used. Figure 6 is a schematic diagram illustrating transmission pool selection for V2X communication. Figure 6 In the lower part is referred to as Mode 3 UE and when the base station gNB schedules resources to be used within a given resource pool, the UE is said to operate in Mode 3. The UE operates in this mode when in coverage and in RRC_CONNECTED state. Figure 6 The upper part of refers to a mode 4 UE, and when resource allocation is performed by the UE itself in a distributed manner, the UE is said to operate in mode 4. The UE can be in coverage, out of coverage, and in RRC_CONNECTED or RRC_IDLE state to operate in this mode.

[0016] When the UE is in coverage and in the RRC_IDLE state (see block 350), SIB21 is received at block 352, which contains the information element (IE) SL-V2X-ConfigCommon, which in turn defines the IE V2X-CommTxPoolNormalCommon. This particular IE contains a set of up to 8 transmit resource pool configurations, each defined by IESL-CommResourcePoolV2X. The UE also receives a zoneConfig IE, which helps the UE calculate its zoneID (ranging from 0 to 7) and select a single relevant transmit resource pool from the set of received pools based on the zoneID. In the event that the UE does not receive a zoneConfig, the UE selects the first pool associated with the synchronization reference source. Similarly, when the UE moves to the RRC_CONNECTED state (see block 354), the UE receives an RRCConnectionReconfiguration message at block 356, which contains the V2X-CommTxPoolNormalDedicated IE. This IE provided by the eNB indicates to the UE (see block 358) whether it will receive precise resources for transmission (eNB scheduled, mode 3), or needs to select its own resources for transmission based on sensing (UE selected, mode 4). Depending on this selection, the UE is provided with a set of transmission resource pools.

[0017] In the case of scheduling (see block 360), the UE is provided with a V2X-SchedulingPool IE containing a set of up to 8 transmit resource pool configurations, each of which is defined by a SL-CommResourcePoolV2X IE. Based on the zoneConfig IE that helps the UE select a single relevant transmit resource pool from the set of received pools, the UE selects the relevant transmit resource pool and then transmits based on the resources provided by the eNB (see block 362).

[0018] In the case of UE selection, the UE is provided with a V2X-CommTxPoolNormalDedicated IE (see block 364), which contains a set of up to 8 transmit resource pool configurations, each of which is defined by a SL-CommResourcePoolV2X IE, as described above. The UE also receives a zoneConfig IE, which helps the UE select a single relevant transmit resource pool from the set of received pools. The UE then transmits based on the resources sensed from the selected resource pool (see block 366).

[0019] For the UE, when out of coverage (see block 350 ), a resource pool is defined according to the SL-V2X-Preconfiguration used for transmission in block 366 (see block 368 ).

[0020] For the UE, when in coverage but in RRC_IDLE state (see block 354), a resource pool is selected from V2X-CommTxPoolNormalCommon defined in SL-V2X-ConfigCommon (see block 370), and then the resource pool is used for transmission in block 366.

[0021] Thus, in the above example, different configurations may be provided to the UE, and the UE selects an appropriate transmit resource pool based on the UE's geographic location when the coordinates correspond to a single zoneID and resource pool ID.

[0022] The base station can decide whether to assist in the scheduling of resources or whether the UE needs to select the resources to be used for transmission. This defines the above-mentioned two operating modes of the V2X system, namely Mode 3 and Mode 4. As described above, the V2X Mode 3 configuration involves the scheduling and interference management of resources performed by the base station for vehicle UEs within the coverage area of ​​the base station to enable sidelink communications such as V2X or V2V communications. Control signaling is provided to the UE via the Uu interface, for example using a downlink control indicator DCI, and resources are dynamically allocated by the base station. In the V2X Mode 4 configuration for sidelink communication, scheduling interference management is autonomously performed using a distributed or decentralized algorithm between UEs based on pre-configured resource configurations.

[0023] Note that the information in the above section is only for enhancement of understanding of the background of the present invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art.

[0024] Starting from the prior art as described above, the object of the present invention is to provide an improved resource pool design, e.g. for a resource pool to be used in sidelink communications in a V2X service, in view of the advantages defined by the NR 5G standard.

[0025] This object is achieved by the subject matter defined in the independent claim and preferred embodiments are defined in the dependent claims.

[0026] Embodiments of the present invention will now be described in further detail with reference to the accompanying drawings, in which:

[0027] Figure 1 A schematic representation of an example of a wireless communication system is shown;

[0028] Figure 2shows a schematic representation of a situation in which UEs communicating directly with each other are within the coverage of a base station;

[0029] Figure 3 shows a scenario in which UEs communicating directly with each other are not within the coverage of a base station, i.e., are not connected to the base station;

[0030] Figure 4 An example of a resource pool defined across time and frequency is shown;

[0031] Figure 5 Yes Figure 1 A schematic representation of a cell in a network described in , the cell being divided into a plurality of zones;

[0032] Figure 6 is a schematic diagram illustrating transmission pool selection for V2X communication;

[0033] Figure 7 is a schematic representation of a wireless communication system for transmitting information between a transmitter and one or more receivers according to an embodiment of the present invention;

[0034] Figure 8 Schematically illustrating a resource pool definition according to an embodiment of the present invention, comprising a resource pool having three separated transmit resource pools with different subcarrier spacings;

[0035] Fig. 9 The concept of bandwidth section is schematically shown;

[0036] Fig.10 Activation of BWP with different parameter sets (numerology) and / or different bandwidth sizes is shown;

[0037] Fig.11 An example of using a bandwidth portion of a CORESET containing a user-specific search space and a common search space is shown;

[0038] Fig.12 An embodiment of the present invention is shown that uses the BWP concept of NR to define multiple resource pools;

[0039] Figure 13(a) to Figure 13(c) An embodiment using a default BWP is shown;

[0040] Fig.14 An embodiment showing multiple NR resource pools defined within each sidelink BWP; and

[0041] Fig.15 An example of a computer system on which the units or modules described according to the method of the present invention and the steps of the method can be executed is shown.

[0042] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings, in which the same or similar elements have the same reference numerals.

[0043] In Release 14 of the 3GPP standard, the above-mentioned traditional use of resource pools has been initially introduced into the vehicle-to-the-world information exchange V2X specification, and the scheduling and allocation of resources has been modified according to the V2X requirements, while the actual device-to-device, D2D communication standard is used as the basis for the design, which is one reason for maintaining the concept of resource pools. Resource pools were originally designed for D2D communications, taking into account the requirement to share resources between D2D and cellular communications. In the case of V2X communications, a dedicated intelligent transmission service ITS band is defined, which does not share the frequency band of cellular communications, such as the 5.9 GHz band. With the introduction of frequency ranges FR1 and FR2, where FR2 is defined up to 52.6 GHz, higher subcarrier spacing or subcarrier spacing SCS can be used for different parameter sets. The same applies to possible future frequency ranges above 52.6 GHz, such as the 60 GHz band, which will use higher SCS.

[0044] The present invention aims to improve V2X communications by taking advantage of the advantages provided by 5G systems. As described in more detail below, this is achieved by the present invention, and embodiments of the present invention may be used in Figure 1 , Figure 2 and Figure 3 The wireless communication system shown is implemented in the figure, and the wireless communication system includes a base station and a user, such as a mobile terminal or an IoT device. Figure 7 is used for the transmitter 300 and one or more receivers 3021 to 302 n Schematic representation of a wireless communication system for transmitting information between. A transmitter 300 and a receiver 302 may communicate via wireless communication links or channels 304a, 304b, 304c, such as radio links. The transmitter 300 may include one or more antennas ANT coupled to each other. T Or an antenna array having multiple antenna elements, a signal processor 300a and a transceiver 300b. The receiver 302 includes one or more antennas ANT coupled to each other. R or an antenna array having multiple antennas, a signal processor 302a1, 302a n and transceivers 302b1, 302b n .

[0045] According to an embodiment, for example, Figure 2As shown in , the transmitter 300 may be a base station, and the receiver may be a UE. The base station 300 and the UE 302 may communicate via respective first wireless communication links 304a and 304b (such as radio links) using a Uu interface, and the UE 302 may communicate with each other via a second wireless communication link 304c (such as a radio link) using a PC5 interface.

[0046] According to an embodiment, for example, Figure 3 As shown in , the transmitter 300 may be a first UE, and the receiver may be another UE. The first UE 300 and the other UE 302 may communicate via respective wireless communication links 304a to 304c (such as radio links) using a PC5 interface.

[0047] The system, transmitter 300 and one or more receivers 302 may operate in accordance with the inventive teachings described herein.

[0048] Multiple TX resource pools

[0049] The present invention provides a transceiver for a wireless communication system, wherein the wireless communication system configures a set of resources in the wireless communication system, the set of resources comprising a plurality of resources to be allocated to each transmission to one or more second transceivers in the wireless communication system, wherein

[0050] The resource set includes multiple sending resource sets and / or receiving resource sets, the multiple sending / receiving resource sets include at least a first sending / receiving resource set and a second sending / receiving resource set, the first sending / receiving resource set has a first attribute and the second sending / receiving resource set has a second attribute, the first attribute and the second attribute are different, and

[0051] The transceiver is configured to communicate using resources from one or more of a plurality of sets of transmit / receive resources.

[0052] According to an embodiment, the transceiver is configured to receive signaling indicating activation or deactivation of one or more transmit / receive resource sets, for example based on the current load of the wireless communication system or based on QoS criteria, the QoS criteria may include load or quota and / or delay and / or reliability targets.

[0053] According to an embodiment, each of the multiple transmission / reception resource sets includes multiple subcarriers in the frequency domain and multiple codewords in the time domain, and the first attribute and the second attribute include a subcarrier spacing SCS or a codeword length or bandwidth.

[0054] According to an embodiment, each of the plurality of transmit / receive resource sets is defined by a bandwidth part BWP, which is equal to or less than a maximum bandwidth capability supported by the transceiver.

[0055] According to an embodiment, a wireless communication system includes a plurality of zones, each zone includes a plurality of transmit / receive resource sets, and each zone is identified by a zone ID, and

[0056] According to the embodiment

[0057] - Regions contain 2D or 3D area models to limit signaling overhead, or non-overlapping regions with defined length, width and height,

[0058] -Zone IDs are reused in space,

[0059] - The total number of zones corresponds to the required number of resource sets.

[0060] According to an embodiment, the transceiver is configured to use a zone ID of a zone, for example, using a modulo operation to identify a zone associated with the transceiver, and identify a set of transmit / receive resources, wherein resources for communication are scheduled from the set of transmit / receive resources using the zone ID, the number of zones, and the SCS index.

[0061] According to an embodiment, the transmission resource is identified by the NR zone ID,

[0062] NR zone ID=zone ID+numZones*SCSindex

[0063] in

[0064] zone ID – LTE V2X zone ID,

[0065] numZones – the number of zones, and

[0066] SCSindex – subcarrier spacing, indicated by the parameter set index μ.

[0067] According to an embodiment, if the transceiver changes from the current zone to the new zone during an ongoing transmission, the transceiver is configured to determine the transmit / receive resource set of the new zone by recalculating the area ID formula based on the new coordinates of the new zone, and requesting from the gNB a remaining amount of resources to be used for transmission to data, wherein the request may include automatically sending a buffer status report BSR to the gNB.

[0068] According to an embodiment, the transceiver is configured to transmit in a first transmit / receive resource set and receive in a second transmit / receive resource set simultaneously, or to transmit in a first transmit / receive resource set and receive in the first transmit / receive resource set at different times.

[0069] According to an embodiment, the control channel is defined by resources of only one of the transmit / receive resource sets, the control channel comprising one or more indicators pointing to data transmission or another control channel in a plurality of transmit / receive resource sets.

[0070] According to an embodiment, the control channel comprises an indication of an offset of a PRB in a subframe in time and / or a time slot and / or a frequency in the respective set of transmit / receive resources.

[0071] According to an embodiment, a transmit / receive resource set is selected from a plurality of resource sets having different SCSs, such as 15kHz, 30kHz, 60kHz, 120kHz and 240kHz, wherein at least one of the resource sets provides backward compatibility, for example, a 15kHz SCS resource set providing backward compatibility with legacy LTE UEs.

[0072] According to the embodiment:

[0073] The transceiver comprises a user equipment UE, the UE being configured to operate according to a first mode (e.g., V2X Mode 3) for sidelink communication with one or more other UEs, and

[0074] In the first mode, scheduling of resources for sidelink communication with one or more other UEs is performed by a base station gNB of the wireless communication system.

[0075] According to an embodiment, the transceiver includes a user equipment UE, which is configured to operate according to a second mode (e.g., V2X mode 4) for sidelink communication with one or more other UEs and autonomously schedule resources from a set of transmit / receive resources for the sidelink communication.

[0076] According to an embodiment, if the UE is out of coverage of the gNB, the UE is configured to retain the last configuration of the resource set received from the gNB, or to revert to a default configuration of the resource set, where the default configuration of the resource set is hard-coded into the UE, or pre-configured by the gNB, or configured by another UE via a sidelink relay.

[0077] According to an embodiment, a transceiver for a wireless communication system serves a plurality of user equipments UE located in a coverage area of ​​the transceiver, wherein

[0078] The transceiver configures a resource set for the coverage area, the resource set comprising a plurality of resources to be allocated to respective transmissions in the wireless communication system, and

[0079] The resource set includes multiple sending resource sets and / or receiving resource sets, and the multiple sending / receiving resource sets include at least a first sending / receiving resource set and a second sending / receiving resource set. The first sending / receiving resource set has a first attribute and the second sending / receiving resource set has a second attribute, and the first attribute and the second attribute are different.

[0080] According to an embodiment, the transceiver is configured to define one or more zones for a coverage area of ​​the transceiver, each of the one or more zones having a set of resources mapped thereto, including a plurality of sets of transmit resources and / or sets of receive resources.

[0081] The present invention provides a wireless communication system, comprising:

[0082] A plurality of transceivers configured to communicate with each other, and

[0083] A resource set in a wireless communication system, the resource set comprising a plurality of resources to be allocated to respective transmissions in the wireless communication system, and

[0084] Among them, the resource set includes multiple sending resource sets and / or receiving resource sets, the multiple sending / receiving resource sets include at least a first sending / receiving resource set and a second sending / receiving resource set, the first sending / receiving resource set has a first attribute and the second sending / receiving resource set has a second attribute, and the first attribute and the second attribute are different.

[0085] Resource pools with different BWPs

[0086] The present invention provides a transceiver for a wireless communication system, wherein the wireless communication system provides a resource set in the wireless communication system, the resource set comprising a plurality of resources to be allocated to each transmission in the wireless communication system, wherein

[0087] The resource set includes a plurality of subcarriers in the frequency domain and a plurality of symbols in the time domain, the resource set includes a plurality of bandwidth parts, the plurality of bandwidth parts include at least a first bandwidth part and a second bandwidth part, the first bandwidth part has a first bandwidth in the frequency domain, the second bandwidth part has a second bandwidth in the frequency domain, the first bandwidth and the second bandwidth are different, and

[0088] The transceiver is configured to communicate using resources from one or more of the plurality of bandwidth portions.

[0089] According to an embodiment, the transceiver is configured to receive a configuration message and / or to be configured by a stored pre-configuration in case of out of coverage, the configuration message and / or the stored pre-configuration defining a plurality of bandwidth portions across a set of resources.

[0090] According to an embodiment, the transceiver is configured to receive signaling indicating activation or deactivation of one or more of the bandwidth parts, for example according to current low latency and / or high reliability and / or given quota requirements of the wireless communication system.

[0091] According to an embodiment, in the case where only a single bandwidth portion is activated, the single bandwidth portion includes a control resource set CORESET with a transceiver-specific search space (e.g., a user-specific search space USS) and / or a CORESET with a common search space CSS, so as to allow the transceiver to simultaneously process unicast or multicast communications and broadcast communications using a single bandwidth portion.

[0092] According to an embodiment, the location of the USS and / or CSS in time and frequency across the bandwidth portion is preconfigured in the UE or signaled by

[0093] - gNB via RRC signaling (Mode 3, UE in coverage), or

[0094] - Another UE via SCI signaling (Mode 4, UE out of coverage).

[0095] According to an embodiment, when at least a first bandwidth part and a second bandwidth part are activated, the first bandwidth part includes at least a control resource set CORESET having a transceiver-specific search space, such as a user-specific search space USS, and the second bandwidth part includes at least a CORESET having a common search space CSS, so as to allow the transceiver to simultaneously process unicast communications and broadcast communications using the first and second bandwidth parts.

[0096] According to an embodiment, when at least the first bandwidth part and the second bandwidth part are activated, the first bandwidth part includes at least a control resource set CORESET with a transceiver-specific search space (e.g., a user-specific search space USS) and / or a CORESET with a common search space CSS, and the second BWP includes at least a control resource set CORESET with a transceiver-specific search space (e.g., a user-specific search space USS) and / or a CORESET with a common search space CSS, so as to allow the transceiver to simultaneously process unicast communications and broadcast communications using the first and second bandwidth parts.

[0097] According to an embodiment, the control channel is defined by resources of only one of the bandwidth parts.

[0098] According to an embodiment, one bandwidth part has a 15kHz SCS to provide backward compatibility with legacy LTE UEs.

[0099] According to an embodiment, one of the bandwidth parts is a default bandwidth part, in which resource allocation for one or more services is sent, wherein the control resources are either configured by the wireless communication system or pre-configured in the transceiver, and the default bandwidth part includes at least one control resource set CORESET, which has a common search space CSS to allow the transceiver to monitor one or more services near the transceiver.

[0100] According to an embodiment, the transceiver is configured to search for a synchronization signal in the default bandwidth portion, wherein in case no synchronization signal is found, the transceiver is configured to start transmitting the synchronization signal and a broadcast channel of the transceiver.

[0101] According to an embodiment, a control channel is defined by resources of a default bandwidth part, wherein transmissions in the plurality of bandwidth parts are scheduled from the control channel in the default bandwidth part.

[0102] According to an embodiment, the transceiver is configured to listen to the control channel only in the default bandwidth portion.

[0103] According to an embodiment, a control channel in the default bandwidth portion points to another control channel in another bandwidth portion where actual transmission occurs so that other transceivers know that there is another bandwidth portion having specific control resources to be monitored and / or decoded by the transceiver.

[0104] According to an embodiment, a control channel in the default bandwidth portion points to another data channel in another bandwidth portion, and wherein the transceiver automatically switches back to the default BWP, for example after transmission of data, or a timeout in a second BWP, or in response to control signaling from a control channel or control unit in one or more of the active BWPs.

[0105] According to the embodiment:

[0106] At least one of the plurality of bandwidth parts defines a plurality of transmit resource sets within a bandwidth part, the plurality of transmit resource sets and / or receive resource sets comprising at least a first transmit / receive resource set and a second transmit / receive resource set,

[0107] A bandwidth portion includes a control resource set CORESET for each transmit / receive resource set used to process control messages and scheduling allocation messages, the control messages being directed to data to be transmitted within the respective transmit / receive resource set.

[0108] According to the embodiment:

[0109] The resource set includes a plurality of transmission resource sets and / or reception resource sets, the plurality of transmission / reception resource sets include at least a first transmission / reception resource set and a second transmission / reception resource set, the first transmission / reception resource set has a first subcarrier spacing SCS and the second transmission / reception resource set has a second SCS, wherein the first SCS and the second SCS are different, and

[0110] Each set of transmit / receive resources includes one or more of a plurality of bandwidth portions.

[0111] According to the embodiment:

[0112] The transceiver comprises a user equipment UE, the UE being configured to operate according to a first mode (e.g., V2X Mode 3) for sidelink communication with one or more other UEs, and

[0113] In the first mode, scheduling of resources for sidelink communication with one or more other UEs is performed by a base station gNB of the wireless communication system.

[0114] According to an embodiment, the transceiver includes a user equipment UE, which is configured to operate according to a second mode (e.g., V2X mode 4) for sidelink communication with one or more other UEs, and autonomously select resources from a set of transmit / receive resources for sidelink transmission and / or signal individual resources on a control channel (e.g., a physical sidelink control channel PSCCH).

[0115] According to an embodiment, if the UE is out of coverage of the gNB, the UE is configured to retain the last configuration of the resource set received from the gNB, or to revert to a default configuration or select one of the previously retained configurations of the resource set.

[0116] The present invention provides a transceiver for a wireless communication system, the transceiver is used to serve a plurality of user equipments UE located in a coverage area of ​​the transceiver, wherein

[0117] The transceiver configures a resource set for a coverage area of ​​the transceiver, the resource set comprising a plurality of resources to be allocated to respective transmissions in the wireless communication system, and

[0118] The resource set includes multiple subcarriers in the frequency domain and multiple code elements in the time domain, the resource set includes multiple bandwidth parts, the multiple bandwidth parts include at least a first bandwidth part and a second bandwidth part, the first bandwidth part has a first bandwidth in the frequency domain, and the second bandwidth part has a second bandwidth in the frequency domain, and the first bandwidth and the second bandwidth are different.

[0119] According to an embodiment, the transceiver is configured to define one or more zones for a coverage area of ​​the transceiver, each of the one or more zones having a resource set including a plurality of transmit resource sets and / or receive resource sets mapped thereto.

[0120] The present invention provides a wireless communication system, comprising:

[0121] A plurality of transceivers configured to communicate with each other, and

[0122] A resource set in a wireless communication system, the resource set comprising a plurality of resources to be allocated to respective transmissions in the wireless communication system, and

[0123] The resource set includes multiple subcarriers in the frequency domain and multiple code elements in the time domain, the resource set includes multiple bandwidth parts, the multiple bandwidth parts include at least a first bandwidth part and a second bandwidth part, the first bandwidth part has a first bandwidth in the frequency domain, and the second bandwidth part has a second bandwidth in the frequency domain, and the first bandwidth and the second bandwidth are different.

[0124] BWP as a resource pool

[0125] The present invention provides a transceiver for a wireless communication system, wherein the wireless communication system provides a resource set in the wireless communication system, the resource set comprising a plurality of resources to be allocated to each transmission in the wireless communication system, wherein

[0126] The resource set includes a plurality of subcarriers in the frequency domain and a plurality of symbols in the time domain, the resource set is defined by a bandwidth portion, the bandwidth portion is equal to or less than a maximum bandwidth capability supported by the transceiver,

[0127] The bandwidth portion includes a plurality of control resource sets CORESET, at least one of the CORESETs having both a transceiver-specific search space (eg, a user-specific search space USS) and a common search space CSS, and

[0128] The transceiver is configured to communicate using resources from the bandwidth portion.

[0129] According to an embodiment, the bandwidth part has a subcarrier spacing SCS that is higher than the SCS of a conventional LTE system.

[0130] According to an embodiment, the wireless communication system includes multiple zones, each zone includes a resource set, and each resource set is defined by a different bandwidth part BWP, wherein the different bandwidth parts may have different or the same SCS.

[0131] The present invention provides a transceiver for a wireless communication system, the transceiver is used to serve a plurality of user equipments UE located in a coverage area of ​​the transceiver, wherein

[0132] The transceiver configures a resource set for a coverage area of ​​the transceiver, the resource set comprising a plurality of resources to be allocated to respective transmissions in the wireless communication system,

[0133] A resource set includes a plurality of subcarriers in the frequency domain and a plurality of symbols in the time domain, the resource set is defined by a bandwidth part BWP, the bandwidth part is equal to or less than a maximum bandwidth capability supported by the transceiver, and

[0134] The bandwidth part includes a plurality of control resource sets CORESETs, at least one of the CORESETs having both a transceiver-specific search space (eg, a user-specific search space USS) and a common search space CSS.

[0135] According to an embodiment, the transceiver is configured to define one or more zones for a coverage area of ​​the transceiver, each of the one or more zones having a set of resources mapped thereto, including a plurality of transmit resource sets and / or receive resource sets.

[0136] The present invention provides a wireless communication system, comprising:

[0137] A plurality of transceivers configured to communicate with each other, and

[0138] A resource set in a wireless communication system, the resource set comprising a plurality of resources to be allocated to respective transmissions in the wireless communication system,

[0139] wherein the resource set includes a plurality of subcarriers in the frequency domain and a plurality of symbols in the time domain, the resource set is defined by a bandwidth portion, the bandwidth portion is equal to or less than a maximum bandwidth capability supported by the transceiver, and

[0140] Therein, the bandwidth part includes a plurality of control resource sets CORESETs, at least one of the CORESETs having both a transceiver-specific search space (eg, a user-specific search space USS) and a common search space CSS.

[0141] General

[0142] According to an embodiment, the set of resources includes a plurality of continuous or non-contiguous resources across the frequency domain and adjacent or non-adjacent resources across the time domain.

[0143] According to an embodiment, a collection of resources defines a resource pool.

[0144] According to an embodiment, wherein the wireless communication system comprises a plurality of zones, each zone comprises a plurality of transmit / receive resource sets, and each zone is identified by a zone ID, and

[0145] According to the embodiment:

[0146] - Regions contain 2D or 3D area models to limit signaling overhead, or non-overlapping regions with defined length, width and height,

[0147] -Zone IDs are reused in space,

[0148] - The total number of zones corresponds to the required number of resource sets.

[0149] According to an embodiment, if during an ongoing transmission, the transceiver changes from a current zone to a new zone, the transceiver is configured to determine a set of transmit / receive resources for the new zone by recalculating the zone ID formula based on its new coordinates, and requesting from the gNB resources to be used to transmit the remaining amount to the data, wherein the request may include automatically sending a buffer status report BSR to the gNB.

[0150] The present invention provides a wireless communication network, comprising:

[0151] One or more base stations BS and one or more user equipment UE, when in connected mode, idle mode or inactive mode, the UE is served by one or more BS or communicates directly with one or more other UE,

[0152] Therein, the base station and / or the UE comprises the transceiver according to the present invention.

[0153] According to an embodiment, the set of resources includes a plurality of continuous or non-contiguous resources across the frequency domain and adjacent or non-adjacent resources across the time domain.

[0154] According to an embodiment, a collection of resources defines a resource pool.

[0155] According to the embodiment:

[0156] The UE includes one or more of the following:

[0157] - a mobile terminal, or

[0158] - Fixed terminal, or

[0159] - Cellular IoT-UE, or

[0160] - Vehicle UE, or

[0161] -IoT or Narrowband IoT, NB-IoT devices or

[0162] - ground vehicle, or

[0163] - aircraft, or

[0164] - drones, or

[0165] - mobile base station, or

[0166] - Roadside Unit, or

[0167] - buildings, or

[0168] - any other item or device with network connectivity that enables the item / device to communicate using a wireless communication network, such as a sensor or actuator, and

[0169] BS includes one or more of the following:

[0170] - a macrocell base station, or

[0171] - Small cell base station, or

[0172] - a central unit of a base station, or

[0173] - a distributed unit of a base station, or

[0174] - Roadside Unit, or

[0175] -UE, or

[0176] - a remote radio head, or

[0177] -AMF, or

[0178] -SMF, or

[0179] - a core network entity, or

[0180] - such as network slicing in NR or 5G core environments, or

[0181] - Any Transmit / Receive Point (TRP) that enables an item or device to communicate using a wireless communications network, the item or device being provided with network connectivity for communicating using a wireless communications network.

[0182] system

[0183] The present invention provides a wireless communication network, comprising at least one UE of the present invention and at least one base station of the present invention.

[0184] According to an embodiment, the receiver and the transmitter include one or more of: a mobile terminal, or a fixed terminal, or a cellular IoT-UE, or an IoT device, or a ground vehicle, or an aircraft, or an unmanned aircraft, or a mobile base station, or a roadside unit, or a building, or a macro cell base station, or a small cell base station, or a roadside unit, or a UE, or a remote radio head, or an AMF, or an SMF, or a core network entity, or a network slice such as in an NR or 5G core environment, or any transmit / receive point (TRP) that enables an item or device to communicate using a wireless communication network, and the item or device is provided with network connectivity to communicate using the wireless communication network.

[0185] method

[0186] The present invention provides a method for transmitting / receiving in a wireless communication system, wherein the wireless communication system configures a set of resources in the wireless communication system, the set of resources comprising a plurality of resources to be allocated to each transmission of one or more second transceivers in the wireless communication system, wherein

[0187] The resource set includes a plurality of transmission resource sets and / or reception resource sets, the plurality of transmission / reception resource sets include at least a first transmission / reception resource set and a second transmission / reception resource set, the first transmission / reception resource set has a first attribute and the second transmission / reception resource set has a second attribute, the first attribute and the second attribute are different, and

[0188] The method includes communicating using resources from one or more of a plurality of sets of transmit / receive resources.

[0189] The present invention provides a method for transmitting / receiving in a wireless communication system, the method serving a plurality of user equipments UE located in a coverage area of ​​a transceiver, wherein

[0190] The method includes configuring a resource set for a coverage area, the resource set including a plurality of resources to be allocated to respective transmissions in a wireless communication system, and

[0191] The resource set includes multiple sending resource sets and / or receiving resource sets, and the multiple sending / receiving resource sets include at least a first sending / receiving resource set and a second sending / receiving resource set. The first sending / receiving resource set has a first attribute and the second sending / receiving resource set has a second attribute, and the first attribute and the second attribute are different.

[0192] The present invention provides a method for transmitting / receiving in a wireless communication system, wherein the wireless communication system provides a resource set in the wireless communication system, the resource set includes a plurality of resources to be allocated to each transmission in the wireless communication system, wherein

[0193] The resource set includes a plurality of subcarriers in the frequency domain and a plurality of symbols in the time domain, the resource set includes a plurality of bandwidth parts, the plurality of bandwidth parts include at least a first bandwidth part and a second bandwidth part, the first bandwidth part has a first bandwidth in the frequency domain, and the second bandwidth part has a second bandwidth in the frequency domain, the first bandwidth and the second bandwidth are different, and

[0194] The method includes communicating using resources from one or more of a plurality of bandwidth portions.

[0195] The present invention provides a method for transmitting / receiving in a wireless communication system, the method serving a plurality of user equipments UE located in a coverage area of ​​a transceiver, wherein

[0196] The method includes configuring a resource set for a coverage area of ​​a transceiver, the resource set including a plurality of resources to be allocated to respective transmissions in a wireless communication system, and

[0197] The resource set includes multiple subcarriers in the frequency domain and multiple code elements in the time domain, the resource set includes multiple bandwidth parts, the multiple bandwidth parts include at least a first bandwidth part and a second bandwidth part, the first bandwidth part has a first bandwidth in the frequency domain, and the second bandwidth part has a second bandwidth in the frequency domain, and the first bandwidth and the second bandwidth are different.

[0198] The present invention provides a method for transmitting / receiving in a wireless communication system, wherein the wireless communication system provides a resource set in the wireless communication system, the resource set includes a plurality of resources to be allocated to each transmission in the wireless communication system, wherein

[0199] The resource set includes a plurality of subcarriers in the frequency domain and a plurality of symbols in the time domain, the resource set is defined by a bandwidth portion, the bandwidth portion is equal to or less than a maximum bandwidth capability supported by the transceiver,

[0200] The bandwidth portion includes a plurality of control resource sets CORESET, at least one of the CORESETs having both a transceiver-specific search space (eg, a user-specific search space USS) and a common search space CSS, and

[0201] The method includes using resources from the bandwidth portion for communicating.

[0202] The present invention provides a method for transmitting / receiving in a wireless communication system, the method serving a plurality of user equipments UE located in a coverage area of ​​a transceiver, wherein

[0203] The method includes configuring a resource set for a coverage area of ​​a transceiver, the resource set including a plurality of resources to be allocated to respective transmissions in a wireless communication system,

[0204] A resource set includes a plurality of subcarriers in the frequency domain and a plurality of symbols in the time domain, the resource set is defined by a bandwidth part BWP, the bandwidth part is equal to or less than a maximum bandwidth capability supported by the transceiver, and

[0205] The bandwidth part includes a plurality of control resource sets CORESETs, at least one of the CORESETs having both a transceiver-specific search space (eg, a user-specific search space USS) and a common search space CSS.

[0206] The present invention provides a method for operating a wireless communication system according to the present invention.

[0207] Computer program product

[0208] The invention provides a computer program product comprising instructions which, when executed by a computer, cause the computer to perform one or more methods according to the invention.

[0209] Therefore, according to an embodiment of the present invention, a method for implementing a service such as a V2X service is provided, which needs to meet specific requirements, such as enhanced reliability and reduced latency under a given quota standard. In addition, multicast / groupcast or unicast communication through a sidelink can be enabled.

[0210] With the introduction of frequency ranges FR1 and FR2, where FR2 is defined up to 52.6 GHz, higher subcarrier spacing SCS for different parameter sets can be used, and embodiments of the method of the present invention facilitate the use of higher subcarrier spacing in the context of resource pools. The resource pools are essentially maintained, however, according to a first embodiment, the resource pools are now primarily defined across frequencies, for example by providing multiple transmit and / or receive resource pools supporting different parameter sets within each resource pool, thereby allowing simultaneous transmission and / or reception.

[0211] Alternative embodiments allow for the use of a smaller number of control subchannels.

[0212] Still further embodiments provide notification to the base station regarding zone changes.

[0213] According to other embodiments, the resource pool design utilizes the NR bandwidth portion concept, i.e., a resource pool may be defined by one or more bandwidth portions.

[0214] Embodiments of the above aspects are now described in more detail, wherein first, an embodiment for designing an NR V2X resource pool using an existing resource pool is described, and then an embodiment for designing an NR V2X resource pool using a bandwidth portion is described.

[0215] In the following, reference is made to a resource pool. However, the present invention is not limited to a resource pool, but the method of the present invention is equally applicable to any set of resources. A pool or set may include a plurality of continuous or non-contiguous resources across the frequency domain and adjacent or non-adjacent resources across the time domain. Therefore, when a resource pool is mentioned in this specification, this is also understood as a reference to a set of resources. A resource set may include a plurality of subcarriers in the frequency domain and a plurality of symbols in the time domain, or a plurality of physical resource blocks PRBs, each PRB including a set of subcarriers in the frequency domain and a set of symbols in the time domain.

[0216] In addition, reference is made hereinafter to one or more zones for which resources may be configured, for example, the coverage of a gNB may be separated into one or more zones. For example, each zone may include multiple transmit / receive resource sets, and each zone is identified by a zone ID. Zones may include 2D or 3D area models to limit signaling overhead, or non-overlapping zones with defined length, width, and height. Zone IDs may be reused in space, and the total number of zones may correspond to the required number of resource sets. The UE may use modulo operations to determine the zones.

[0217] However, the present invention is not limited to this concept, on the contrary, the method of the present invention is equally applicable to any transceiver / system that does not define any zone and a collection of resources configured for communication. Therefore, when a zone is mentioned in this specification, this is also understood as a reference to a wireless communication system or a transceiver such as a base station, which is a collection of resources configured for a coverage area or a cell or multiple cells.

[0218] In addition, in the following, reference is made to a sending resource pool or set, however, the present invention is not limited to a sending resource pool or set, but the method of the present invention is equally applicable to a receiving resource pool or set. In other words, a set of resources can be used for sending, receiving, or even both. Therefore, when a sending resource pool or set is mentioned in this specification, this is also understood as a reference to a receiving resource pool or set.

[0219] Design of NR V2X resource pool using existing resource pool

[0220] The above concept of using a subframe bitmap across time is mainly used in the LTE V2X resource pool design, because it is carried from D2D and also uses the same frequency band to pool or process cellular downlink resources. As mentioned above, this also expands the possibility of defining time-orthogonal resource pools for different zones. The disadvantage of this design is that due to the half-duplex constraint, when a UE transmits in any defined frequency resource in a given subframe, it cannot receive any other transmission from any other UE at the same time and (more importantly) in the same pool. Since UEs in the same zone (see Figure 5 ) use the same resource pool, so a transmitting UE cannot hear any transmission from a neighboring UE that is also transmitting at the same time but on a different frequency. Although a UE may be able to hear another UE using a time-orthogonal resource pool defined for another zone, this is not as important as hearing UEs in the same zone (i.e., hearing UEs that are in close proximity to the transmitting UE).

[0221] According to an embodiment of the present invention, multiple parameter sets provided by NR are used to create at least three different resource pools or sets defined across different subcarrier spacings SCS, such as transmit and / or receive sets. For example, for transmissions below 6 GHz, three different subcarrier spacings are supported, namely 15 kHz SCS, 30 kHz SCS and 60 kHz SCS. According to an embodiment, more than one transmit pool is provided for each zone (see Figure 5 ) extends the existing resource pool definition as described above, thereby defining at least 24 different transmission pools according to an embodiment in which the base station uses eight different zones. Figure 8 The resource pool definition according to this embodiment is schematically shown, wherein the resource pool 312 includes three independent transmission resource pools 312a, 312b and 312c, and each transmission resource pool 312a to 312c has a subcarrier spacing different from the subcarrier spacing of other pools. Figure 8 In the embodiment of the present invention, the resource pool 312 includes a first transmission resource pool 312a using a 15 kHz SCS, a second transmission resource pool 312b using a 30 kHz SCS, and a third transmission resource pool 312c using a 60 kHz SCS.

[0222] Note that the embodiments described herein are given with respect to a situation where a base station is provided to configure a resource pool, e.g. when serving a mode 3 UE or when a mode 4 UE is within the coverage of the base station. However, the principles of the inventive method described herein are equally applicable to the pre-configuration of a resource pool used, e.g. by a UE operating in mode 4 and not within the coverage of the base station.

[0223] One or more of the transmitting resource pools 312a to 312c can be active at the same time and can be activated / deactivated in a manner similar to the conventional method, for example, by using corresponding control messaging such as DCI messaging. Activating more than one transmitting resource pool 312a to 312c provides the possibility of transmitting and receiving simultaneously across resource pools with different SCSs. As described above, in the conventional method, at a given time, the UE either transmits only from a single resource pool or receives only from a single resource pool, which is a major disadvantage because all UEs in the same zone use the same transmitting resource pool. Since the transmitting pool is also one of the receiving pools for UEs in the same zone, a UE transmitting at a given point in time will not be able to receive from any receiving pool at the same time. In other words, this allows a UE (such as a vehicle) to ignore other vehicles in its own zone at the same time, i.e., regarding UEs or vehicles that are immediately adjacent to the transmitting UE. The method of the present invention overcomes this particular constraint since the UE can now transmit in a given resource pool of a given SCS, e.g. transmit resource pool 312a, and simultaneously receive in different resource pools of different SCSs belonging to the same zone, e.g. receive in transmit resource pools 312b, 312c.

[0224] In order to identify the corresponding transmission resource pools 312a to 312c, according to an embodiment of the method of the present invention, the existing zoneID definition used in the traditional method is extended. More specifically, in order to be able to identify and use multiple transmission resource pools per zone, the zoneID field in the traditional resource pool configuration is modified to support multiple transmission resource pools. In the following, consider Figure 5 According to this example, the coverage area of ​​the base station is divided into eight zones. Figure 8 In the embodiment of the present invention, for each of the supported number of SCSs, the resource pool configuration needs to support at least 8 zones. In this case, 8 zones and 3 resource pools for different SCSs in each zone total 24 pools. According to the embodiment, the formula for calculating the zoneID remains the same, except that the resource pools of different SCSs are incorporated. For example, zoneIDs 0 to 7 correspond to the respective first transmission pools 312a in each zone with a 15kHz SCS. This corresponds to Figure 5 According to the situation shown in FIG. 1 , and according to the present invention, additional zoneIDs 8 to 15 are provided, which correspond to the respective transmission pools in each zone with 30kHz SCS. Further zoneIDs 16 to 23 are provided, which correspond to the respective transmission pools in each zone with 60kHz SCS. The formula for defining the zoneID of the new zone (also referred to as NRzoneID) can be shown as follows:

[0225] NR zone ID=zone ID+numZones*SCSindex

[0226] in

[0227] NRzoneID – Zone ID for NR V2X

[0228] zone ID – LTE V2X zone ID

[0229] numZones – the number of zones, 8 in this example

[0230] SCSindex – subcarrier spacing index, depends on the NR numerology μ.

[0231] Table 1 below shows the NR zoneID of a resource pool of a coverage area divided into eight zones.

[0232]

[0233] According to other embodiments, control information from existing resource pools may be maintained and extended to point to additionally provided NR resource pools. When considering the above embodiment using a pool with three different SCSs, the 15kHz SCS corresponds to the subcarrier spacing in the existing resource pool according to the LTE system. In such a single SCS, single transmit pool V2X system, the UE needs to always monitor the PSCCH control channels of all defined resource pools. The introduction of multiple SCS pools may result in the need for the UE to monitor multiple control subchannels across resource pools of different SCSs, which may increase the processing workload and time at the UE. Therefore, according to an embodiment, and assuming that a 15kHz SCS resource pool will also be used for backward compatibility with legacy LTE UEs, according to this embodiment, the UE only uses the control subchannels in the first transmit resource pool 312a, that is, the second and third transmit resource pools 312b and 312c do not include or define resources for control channels. According to this embodiment, the control information will be extended to include an indicator indicating where data transmission in each resource pool is performed. Figure 8 This embodiment is shown. Figure 4When compared, it can be seen that the first transmit resource pool 312a includes corresponding control and data subchannels 314a, 314b, 316a and 316b. As schematically shown by the dotted lines L1, L2, the control subchannel indicates to UE2 and UE3 that data can be found in the second or third resource pool 312b or 312c using the corresponding indicators L1, L2. For example, control messaging such as SCI may include parameters defining the transmit resource pool in which data is to be transmitted, for example by adding an additional parameter pointing to the above-mentioned NR zoneID corresponding to the corresponding transmit resource pool for a given SCS. The UE may also use the scalable TTI feature of NR to start transmission of data in the closest upcoming TTI, such as Figure 8 as shown in .

[0234] According to an embodiment, the indicator may not point to the data transmission, but to one or more secondary control channels including, for example, remaining or additional system information. The indicator may also point to both the data transmission and the secondary control channel. For example, a control channel (CCH) pointing to another control channel may be provided, the other control channel pointing to a data channel (DCH).

[0235] The method described above is advantageous because it relieves the UE from the burden of keeping scanning multiple control subchannels and, further, it allows for more efficient resource allocation in the higher SCS resource pools 312b and 312c. Furthermore, the control channel pointing mechanism allows general control information to be sent in the low frequency band and band-specific control information (such as is required for the high frequency band in FR2 in particular) to be sent in the specific high frequency band itself.

[0236] According to other embodiments, the control channel may additionally include signaling for specifying a transmission subframe. When taking into account the fact that one 15kHz SCS subframe is equivalent to two 30kHz SCS subframes and four 60kHz SCS subframes, in addition to the indication of the transmission in the higher SCS resource pool, the offset of the subframe in the corresponding resource pool is also signaled, for example, by adding a field describing the subframe offset in the SCI, for example, the field is 0 or 1 for the 30kHz SCS resource pool 312b and 0, 1, 2 or 3 for the 60kHz SCS resource pool. Figure 8 In the example shown, the offset is assumed to be 0, as indicated by the UE2 data and UE3 data starting at the same subframe as the UE2 control data and UE3 control data in the control subchannels 314a, 314b in the first resource pool 312a. According to this embodiment, the offset is indicated in the time domain. According to other embodiments, the offset may be signaled in the frequency domain, only in the frequency domain, or in both the time domain and the frequency domain. For example, the offset may refer to a subframe in time and / or a time slot and / or a PRB in frequency.

[0237] exist Figure 8 In the example of FIG. 5 , it is shown that the second resource pool 312 b and the third resource pool 312 c only include data subchannels 316 c and 316 d , but do not include a control subchannel.

[0238] Note that the above-mentioned SCS of 15kHz, 30kHz and 60KHz are only examples in FR1, and similarly, for FR2, SCS of 60kHz (extended CP), 120kHz and 240KHz can be used. Therefore, according to an embodiment, a transmit / receive resource set can be selected from a plurality of resource sets having different SCSs (such as 15kHz, 30kHz, 60kHz, 120kHz and 240kHz or any other value), and at least one of the resource sets provides backward compatibility, for example, the above-mentioned 15kHz SCS resource set provides backward compatibility with legacy UEs. For example, an SCS can be selected from the following table.

[0239] <38.300-Table 5.1-1: Supported transmission parameter sets and additional information>

[0240]

[0241] Design of NRV2X resource pool using bandwidth fraction

[0242] In the following, further embodiments of the inventive method for designing an NR resource pool are described, which design exploits the concept of bandwidth portions defined by NR.

[0243] NR 5G systems introduce the concept of bandwidth parts (BWPs). Due to the wideband operation of NR 5G systems, the UE may only be able to transmit and receive in a frequency range that is a subset of the entire bandwidth. The bandwidth can be adjusted according to the required throughput, which can improve the energy efficiency of the system. In particular, the UE will only perform decoding of only a smaller portion of the entire bandwidth, saving energy and therefore battery power, especially since the power consumption of the analog-to-digital converter ADC scales with the size of the bandwidth. Fig.10The concept of bandwidth parts is schematically shown, and the available overall bandwidth is shown at 400, as well as two bandwidth parts 402a and 402b with a bandwidth smaller than the overall bandwidth 400. Another benefit of the BWP concept is that fast switching between different subcarrier spacings can be performed, and UEs with only low bandwidth capabilities are also supported on wideband carriers. In addition, the load balancing between the overall transmission bandwidth is improved. The BWP comprises a set of consecutive resource blocks within the entire bandwidth of the system, and each BWP is associated with a specific set of parameters, such as the subcarrier spacing SCS, and a corresponding sidelink prefix. The BWP may be equal to or larger than the size of a synchronization sequence SS block (also called SSB), and may or may not contain the SSB. The UE may have up to four BWPs each configured for downlink and uplink, but at a given point in time, only one BWP for uplink and downlink may be active.

[0244] Fig.11 Activation of BWPs with different parameter sets and / or different bandwidth sizes is shown. A first bandwidth portion BWP1 of a first lower bandwidth and a second bandwidth portion BWP2 of a higher bandwidth are shown. Over time, in response to signaling such as RRC signaling, the corresponding BWPs may be activated. Fig.11 In the example of FIG. 1 , initially, the first bandwidth portion BWP1 is active. At time t1, by external signaling, the bandwidth portion BWP1 is deactivated and the bandwidth portion BWP2 of higher bandwidth is activated, such as Fig.11 This is schematically shown in FIG. 1 by the signal "activate2", which means that now the bandwidth part BWP2 will be activated, resulting in the deactivation of the first bandwidth part BWP1. At time t2, the first bandwidth part is activated again and at time t3, the second bandwidth part is activated again. The durations may be the same or different. The BWPs may overlap in frequency or may cover different bandwidths. In the downlink, in order to switch between BWPs, a certain gap time is provided for the receiver to allow the radio front-end RF to re-tune, such as Fig.11 As shown in , it can be seen that the corresponding activation signals are received slightly earlier than the actual switching times t1, t2 and t3.

[0245] The BWP can be configured through RRC signaling, and activation and deactivation can be enabled through PDCCH signaling. The MAC layer can confirm the activation / deactivation using a MAC control element. Moreover, time-based deactivation can be implemented to reduce bandwidth and save signaling overhead after data transmission is completed. Deactivation can also be provided by the MAC control element in the last setup packet being sent.

[0246] For a serving cell, the BWP in which the SSB is sent and in which the system information is received is called the initial downlink BWP. In the uplink, the initial BWP is the bandwidth over which the RACH is sent, and the RACH resources can be configured by the system information. Once multiple BWPs are configured, one of the BWPs can be used as a default BWP that can be used as a fallback when the transmission has ended or the UE receives a control signal on any BWP to trigger a fallback or the inactivity time expires. In carrier aggregation CA or dual connectivity DC, the base station can configure at least the first active BWP in the downlink and at least the first active BWP in the uplink.

[0247] HARQ retransmissions may be performed on the bandwidth part. In addition, the UE may also be active outside the BWP, for example to perform RRM measurements, for example to send a sounding reference signal SRS. In an active BWP, the UE monitors at least one physical downlink control channel, wherein a control element resource CORESET is configured for the at least one physical downlink control channel.

[0248] Fig. 9 An example of a bandwidth portion using a CORESET containing a user-specific search space and a common search space is shown. The frequency domain extends in the vertical direction, and the time domain extends in the horizontal direction. The overall available bandwidth is schematically represented as 400 and is Fig. 9 In the example of FIG. 4 , three bandwidth parts 402a to 402c are shown, where bandwidth parts 402a and 402b use the same subcarrier spacing SCS, for example 30kHz, and the third bandwidth part 402c uses a subcarrier spacing of 60kHz. Fig. 9 In the example of , the individual bandwidth parts are positioned along the frequency so that they are separated by a certain bandwidth, but Fig.10 As shown in , and as described above, the bandwidth portions may also be contiguous or even overlapping.

[0249] Each BWP contains at least one control resource set CORESET, which has a UE-specific search space USS. The CORESET can also be configured to contain a common search space CSS, which can be used for specific purposes such as system information, paging, group information, etc. in addition to UE-specific signaling. The USS is a space across time and frequency, and the UE monitors the USS for the possible reception of control information that is specifically configured to and directed to the UE. On the other hand, the CSS is a space across time and frequency, and the UE monitors the CSS for the possible reception of control information that is configured to be received or monitored by all UEs. For example, the CSS can be used during the initial exchange of RRC messages before the USS is configured by the RRC reconfiguration message. In the case of carrier aggregation CA or dual connectivity DC, the active DL-BWP contains at least one CORESET with a CSS.

[0250] exist Fig. 9 In the example of FIG. 4 , the first BWP 402a includes two CORESETs, namely CORESET1 and CORESET2, wherein only CORESET1 partially defines USS, and no CSS is provided in BWP 402a. BWP 402b includes three CORESETs, namely CORESET1 to CORESET3, wherein CORESET1 is completely used as USS. Similarly, no CSS is provided. In BWP 402c, three CORESETs, namely CORESET1 to CORESET3, are provided, wherein CORESET2 defines CSS, and CORESET3 defines USS.

[0251] A UE may be configured with a BWP with different parameter sets, and thus different UEs with different parameter sets may be scheduled in different frequency parts of a wideband carrier. Fig.12 In the example of , BWPs 402a and 402b are configured with a parameter set of 30kHz subcarrier spacing, while BWP3 402c is configured with a parameter set of 60kHz subcarrier spacing. Although BWPs are initially configured via RRC signaling, they can be activated or deactivated using DCI signaling as described above, however, there is still the constraint that only a single DL or UL BWP can be active at a given point in time.

[0252] When applying the BWP concept outlined above, according to an embodiment, the resource pool for the NR V2X system may not need to be divided into control and data subchannels, but rather, the resource pool is defined as a portion of the NR bandwidth reserved, for example, for V2X PC5 communications (i.e., dedicated to communications between UEs). The resource pool can be defined as described above with respect to the first embodiment, so that, for example, 24 transmit resource pools can also be defined for eight geographical areas of the coverage area of ​​the base station, and each area can include three pools to cater to different SCSs, such as 15kHz, 30kHz, and 60kHz.

[0253] Fig.12 An embodiment of defining multiple resource pools using the BWP concept of NR is shown. Fig.12 The frequency domain is shown along the vertical line, similar to Fig. 9 , and schematically shown at 400, the available overall bandwidth, wherein first, second and third BWPs, bandwidth portions 402a to 402c are shown, which in turn define respective transmit resource pools. The first and second BWPs or bandwidth pools 402a and 402b use 30kHz SCS, while the third bandwidth portion or resource pool 402c uses 60kHz SCS. Defining the respective transmit resource pools using BWPs that can be selectively activated / deactivated allows the UE to scan and monitor only the BWPs that are active at a given point. For example, at Fig.12 In the embodiment of FIG. 4 , the bandwidth portion between portions 402a and 402c is not activated, and only active bandwidth portions 402a, 402b, and 402c are configured by the UE and used as different transmit resource pools at a given time.

[0254] When considering sidelink communications between UEs, the sidelink BWP can be defined through RRC signaling during the initial access process. In addition, during RRC signaling, BWPs across different SCSs can be defined within a resource pool. A default BWP can be defined in a 15kHz SCS resource pool and can be used as a legacy structure for resource pool design to allow backward compatibility. This allows for catering to legacy UEs that cannot use higher SCS resource pools for transmission.

[0255] Depending on the current load level of the system, the initially defined BWP as part of the resource pool may be selectively activated or deactivated, for example using DCI sent from the base station to the UE. Fig.12 In a high load situation, the base station may signal to the UE that all three BWPs 402a to 402c are now activated as a resource pool, whereas in a low load situation, only one of the BWPs may be activated. In case of even higher loads in the system, even more bandwidth portions may be activated, e.g. Fig.12One or more of the bandwidth portions 402d to 402f are shown as being inactive.

[0256] In the case where the UE is out of coverage, such as a Mode 4 UE, it may continue to use the latest or last configuration received from the base station, or may revert to a default configuration of resource sets that is hard-coded into the UE, pre-configured by the gNB, or configured by another UE via a sidelink relay. The gNB may provide different transmit resource pools or sets to the UE for use under different conditions. The gNB may provide a normal transmit resource pool or set for use when in coverage, and a pre-configured transmit resource pool or set that essentially overwrites an already existing pre-configured set that is hard-coded into the UE (such as a car modem).

[0257] As described above, there may be embodiments where only a single BWP is active, and such a single active BWP includes: a CORESET containing a USS to cater to unicast communications, such as fleet-based communications; and a CORESET containing a CSS to cater to control information being broadcast by neighboring UEs. Fig.12 In the example, the third BWP 402c includes two CORESETs, so this may be the BWP that can be used when only one BWP is activated. If the other of the BWPs will be the only BWP to be activated, the CORESETs need to be adjusted so that an additional CORESET including the CSS is provided in the first BWP 402a and an additional CORESET including the USS is provided in the second BWP 402b.

[0258] According to another embodiment, as described above, more than one BWP may be active, and in the case where there are at least two active BWPs in the resource pool, one of the active BWPs includes a CSS, and one of the active BWPs includes a USS, as described with respect to BWPs 402a and 402b. Fig.12 As shown in FIG, both BWPs 402a and 402b are active, and one BWP, BWP 402a, includes the USS and the other BWP, BWP 402b, includes the CSS. Basically, a resource pool containing one or more BWPs, whether in the same BWP or in different BWPs, should have at least one CORESET containing the USS and one CORESET containing the CSS. This allows a UE to transmit in a given BWP and receive control information about any transmissions from neighboring UEs in the same geographic area or in the same zone transmitting on the same resource pool.

[0259] According to another embodiment, one of the BWPs may be dedicated for resource allocation. For example, there may be multiple frequency bands supporting V2X services such as safety services, non-safety services, and broadband services, some of which may be specifically allocated to a specific frequency band, while other services may share the spectrum. Considering the overall capacity constraints, there may be multiple frequency bands and multiple BWPs that need to be monitored by all UEs, however, this may increase the complexity of the UE continuously monitoring multiple sidelink resource allocations in multiple BWPs. On the other hand, the UE may not miss any important transmissions in its vicinity. For broadband services, the UE can send broadband signals and can send signals in different parts of the frequency band depending on the load. In this case, it may be difficult for other UEs to find allocations unless all frequency bands are continuously monitored. In addition, out-of-coverage UEs may no longer be configured with a specific BWP by the gNB.

[0260] Therefore, according to a further embodiment of the method of the present invention, a default BWP is defined in which all resource allocations for one or more services are sent. The control resources may be configured by the gNB or may be preconfigured in the UE. The configuration may include a CSS, which allows each UE to listen to all services in its vicinity. Fig.12 In, for example, BWP 402a may form a default bandwidth and CORESET2 may be a common search space to be monitored by the UE regarding resource allocations for various services. The UE may also search for synchronization signals in the default BWP, and in the event that no gNB synchronization signal and no UE synchronization signal are found, the UE may start sending synchronization signals (such as SLSS) and its physical sidelink broadcast channel PSBCH.

[0261] In other words, the default BWP defines a default control channel, which can also be used for wideband transmission in other bands or BWPs through cross-BWP and / or cross-carrier scheduling. For example, the UE can only listen to one of the control channels in the default BWP, thereby improving the power saving of the UE and ensuring that all UEs listen to the control channel for receiving all V2X services. In the case where wideband transmission or other data transmission occurs in different BWPs or on different carriers, some time can be provided for RF retuning to allow the UE to retun the radio front end for decoding.

[0262] Figure 13(a) to Figure 13(c) An embodiment using the above-described default BWP is shown, and in FIG. 13( a ), one or more control channels 314 a may be defined in the default BWP 402 a , and the control channel 314 a may be directed to data transmission in the second or third BWP 402 b , 402 c .

[0263] According to other embodiments, the V2X control channel may also point to an additional control channel provided in another BWP, in which the actual transmission occurs, as shown in FIG. 13( b). The one or more control channels 314a defined in the default BWP 402a point to corresponding control channels 314b and 314c in the bandwidth parts 402b and 402c, which in turn point to corresponding data transmissions in the data subchannels 316b, 316c of the corresponding bandwidth parts 402b, 402c. Thus, according to such an embodiment, the V2X control channel may point to another V2X control channel that may be of interest to certain UEs, such as members of a fleet. In other words, the first message may let other UEs know that there is another BWP or carrier with specific control information that should be monitored, which may also be referred to as a sidelink service announcement on another BWP and / or carrier.

[0264] For critical data with less delay, the resource allocation and predefined control channel can be repeated several times, as shown in FIG. 13 (b), so that all UEs interested in this data can reliably receive the resource allocation before the large data (in other frequency bands) is sent. As shown in FIG. 13 (c), the control subchannel 314c is sent twice using the default BWP, and the transmission of data in the corresponding data channels 316b and 316c of the second and third BWPs 402a and 402c only starts when the initial or default control channel has been sent twice. Naturally, it can also be sent more frequently.

[0265] Sensing will be primarily based on the control resources just described, rather than on data transmission in different frequency bands. A UE wishing to transmit data can decode the scheduling assignments in the dedicated control resources to understand the scheduled resource assignments of other UEs and avoid the corresponding PRBs in its own autonomous selection (i.e. when operating in Mode 4).

[0266]

[0046] Still according to other embodiments, multiple resource pools may be defined within a single bandwidth portion. Fig.14 An embodiment in which multiple NR resource pools are defined within each sidelink BWP is shown. Fig.14 In the embodiment of FIG. 4 , the first bandwidth portion 402a with a 30kHz SCS includes a first resource pool 312a and a second resource pool 312b for data transmission. In addition, two CORESETs are provided that define the resources for sending control information and include indications of where to find data in the respective resource pools 312a and 312b. Fig.14 As further depicted in FIG. 1 , this concept can also be implemented when more than one bandwidth portion is used, and in a similar manner to the first bandwidth portion 402a, the second bandwidth portion 402b can also define respective pools 312a' and 312b'. Fig.14As shown in FIG, the sidelink bandwidth portion may include multiple NR resource pools 312a, 312b within a single BWP. The NR resource pools 312a, 312b do not include dedicated control and data subchannels, but rather provide multiple CORESETs within the BWP that substantially correspond to the number of defined resource pools for processing control and scheduling allocation messages. In addition, the control information is directed to data sent using resources within the selected NR resource pools 312a and 312b.

[0267] According to other embodiments again, the resource pool for V2X services may be defined by a single bandwidth portion defined in the overall system bandwidth as described above, and the bandwidth portion contains at least one CORESET having both USS and CSS. Preferably, the bandwidth portion has a higher SCS, such as 30kHz or 60kHz. According to another example, more than one bandwidth portion may also be defined, with the bandwidth portions having different SCSs.

[0268] District Change Notice

[0269] Other embodiments relate to zone change notifications that may be required in the case where a mode 3 UE moves from a current zone to a new zone and thereby requires new information about how to define a resource pool in the new zone. In other words, when the UE changes from one zone to another, the transmit resource pool also changes. If the UE is not transmitting, this is not critical because the BS will then signal the UE with information about the new resource pool in the new zone. However, if the UE is currently transmitting data, such as between SPS transmissions, and there is still data to be transmitted, the resources scheduled by the BS for the previous resource pool may be invalid in the new resource pool corresponding to the new zone. Therefore, in this case, the UE automatically requests new resources from the base station, for example, by automatically sending a buffer status report, and the new resources will be used for the transmission of the remaining data. Signaling can also be triggered using the MAC layer. The UE can determine a new transmit resource pool or set by recalculating the above zone ID formula based on its new coordinates.

[0270] Preferably, only UEs in Mode 3 and with active SPS transmission send additional BSRs to the BS upon zone change. Such signaling may not be required for other UEs.

[0271] In some of the above embodiments, reference has been made to individual vehicles in connected mode (also referred to as mode 3 configuration) or individual vehicles in idle mode (also referred to as mode 4 configuration). However, the present invention is not limited to V2V communications or V2X communications, but is also applicable to any device-to-device communications, for example, such as non-vehicle mobile users or fixed users performing sidelink communications via a PC5 interface. Likewise, in such scenarios, scheduling resources according to the above aspects is advantageous because it allows resources for sidelink communications to be scheduled more efficiently, thereby avoiding resource conflicts, etc.

[0272] Some embodiments of the present invention have been described above with reference to a communication system in which the transmitter is a base station serving a user equipment and in which the receiver is a user equipment served by the base station. However, the present invention is not limited to such embodiments and may also be implemented in a communication system in which the transmitter is a user equipment and in which the receiver is a base station serving the user equipment. According to other embodiments, both the receiver and the transmitter may be UEs that communicate directly with each other, for example via a sidelink interface.

[0273] Depending on the embodiment, the wireless communication system may include a terrestrial network or a non-terrestrial network, or a network or network segment using a spacecraft or an aerospace vehicle or a combination thereof as a receiver.

[0274] According to an embodiment, the receiver may include one or more of a mobile terminal or a fixed terminal, an IoT device, a ground vehicle, an aircraft, a drone, a building, or any other item or device (e.g., a sensor or actuator) having network connectivity, wherein the network connectivity enables the item / device to communicate using a wireless communication system. According to an embodiment, the transmitter may include one or more of the following: a macrocell base station, or a small cell base station, or an aerial vehicle such as a satellite or space, or an aerospace vehicle such as an unmanned aerial system (UAS), such as a tethered UAS, a lighter-than-air UAS (LTA), a heavier-than-air UAS (HTA), and a high-altitude UAS platform (HAP), or any transmission / reception point (TRP) that enables an item or device having network connectivity to communicate using a wireless communication network.

[0275] Although certain aspects of the described concepts have been described in the context of an apparatus, it is apparent that these aspects also represent a description of a corresponding method, wherein a block or device corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method step also represent a description of a corresponding block or item or feature of a corresponding apparatus.

[0276] The various elements and features of the present invention can be implemented in hardware using analog and / or digital circuits, in software by executing instructions through one or more general or special processors, or as a combination of hardware and software. For example, embodiments of the present invention can be implemented in the environment of a computer system or another processing system. Fig.15 An example of a computer system 500 is shown. The units or modules and the steps of the methods performed by these units can be executed on one or more computer systems 500. The computer system 500 includes one or more processors 502, such as a dedicated or general-purpose digital signal processor. The processor 502 is connected to a communication infrastructure 504 such as a bus or a network. The computer system 500 includes a main memory 506 (e.g., a random access memory (RAM)), and an auxiliary memory 508 (e.g., a hard drive and / or a removable storage drive). The auxiliary memory 508 can allow computer programs or other instructions to be loaded into the computer system 500. The computer system 500 may further include a communication interface 510 to allow software and data to be transmitted between the computer system 500 and external devices. The communication can come from electronic, electromagnetic, optical or other signals that can be processed by the communication interface. The communication can use wires or cables, optical fibers, telephone lines, cellular phone links, RF links and other communication channels 512.

[0277] The terms "computer program medium" and "computer readable medium" are generally used to refer to tangible storage media, such as a removable storage unit or a hard disk installed in a hard drive. These computer program products are means for providing software to the computer system 500. The computer program, also referred to as computer control logic, is stored in the main memory 506 and / or the secondary memory 508. The computer program may also be received via the communication interface 510. The computer program, when executed, enables the computer system 500 to implement the present invention. In particular, the computer program, when executed, enables the processor 502 to implement the processing of the present invention, such as any method described herein. Therefore, such a computer program may represent a controller of the computer system 500. In the case of using software to implement the present disclosure, the software may be stored in a computer program product and loaded into the computer system 500 using a removable storage drive, an interface (such as the communication interface 510).

[0278] The implementation in hardware or software can be performed using a digital storage medium, such as cloud storage, floppy disk, DVD, Blu-ray, CD, ROM, PROM, EPROM, EEPROM or flash memory, on which electronically readable control signals are stored, which cooperate (or can cooperate) with a programmable computer system to perform the corresponding method. Therefore, the digital storage medium can be computer readable.

[0279] Some embodiments according to the invention comprise a data carrier having electronically readable control signals, which are capable of cooperating with a programmable computer system, such that the system performs one of the methods described herein.

[0280] Generally, embodiments of the present invention can be implemented as a computer program product with a program code, the program code being operative for performing one of the methods when the computer program product runs on a computer.The program code may, for example, be stored on a machine readable carrier.

[0281] Other embodiments comprise a computer program for performing one of the methods described herein, stored on a machine readable carrier. In other words, therefore, an embodiment of the inventive method is a computer program having a program code, for performing one of the methods described herein, when the computer program runs on a computer.

[0282] Therefore, another embodiment of the method of the present invention is a data carrier (or digital storage medium, or computer-readable medium) comprising a computer program recorded thereon for performing one of the methods described herein. Therefore, another embodiment of the method of the present invention is a data stream or signal sequence representing a computer program for performing one of the methods described herein. The data stream or signal sequence can, for example, be configured to be transmitted via a data communication connection, such as the Internet. Another embodiment includes a processing device, such as a computer or a programmable logic device, which is configured to or suitable for performing one of the methods described herein. Another embodiment includes a computer having a computer program for performing one of the methods described herein installed on the computer.

[0283] In some embodiments, a programmable logic device (e.g., a field programmable gate array) may be used to perform some or all of the functions of the method described herein. In some embodiments, a field programmable gate array may collaborate with a microprocessor to perform one of the methods described herein. Typically, the method is preferably performed by any hardware device.

[0284] The embodiments described above are only used to illustrate the principles of the present invention. It should be understood that modifications and variations of the arrangements and details described herein are obvious to those skilled in the art. Therefore, the present invention is intended to be limited only by the scope of the pending patent claims, and is not limited by the specific details given by the description and explanation of the embodiments herein.

[0285] List of abbreviations and symbols

[0286]

[0287]

Claims

1. A user equipment UE for a wireless communication system, wherein: The UE comprises a transceiver, the wireless communication system provides a resource set, the resource set comprising a plurality of resources to be allocated to respective transmissions in the wireless communication system, The UE is in a connected mode, an idle mode, or an inactive mode, and is served by one or more base stations BS of a wireless communication system, or directly communicates with one or more other UEs. The resource set includes a plurality of subcarriers in the frequency domain and a plurality of symbols in the time domain, and the resource set includes at least one bandwidth part, Wherein, within the bandwidth part, a plurality of sending resource pools and / or receiving resource pools are defined by each subset of the resources of the bandwidth part, and the plurality of sending resource pools and / or receiving resource pools at least include a first sending / receiving resource pool and a second sending / receiving resource pool, wherein the bandwidth portion comprises a first control channel and a second control channel, wherein the first control channel and the second control channel are defined by resources of the bandwidth portion outside the first transmit / receive resource pool and the second transmit / receive resource pool, wherein the first control channel is provided to the first transmit / receive resource pool, wherein the second control channel is provided to the second transmit / receive resource pool, and wherein the first control channel and the second control channel are provided for processing control messages and scheduling allocation messages, the control messages being directed to data to be transmitted within the respective transmit / receive resource pools, and The transceiver is configured to receive resource allocation of one or more of the multiple sending resource pools and / or receiving resource pools for communication.

2. The user equipment UE according to claim 1, wherein: The resource set includes multiple bandwidth parts, and the multiple bandwidth parts include at least a first bandwidth part and a second bandwidth part, the first bandwidth part has a first bandwidth in the frequency domain, and the second bandwidth part has a second bandwidth in the frequency domain, and the first bandwidth and the second bandwidth are different.

3. The user equipment UE according to claim 1, wherein: The transceiver is configured to receive a configuration message and / or to be configured by a stored pre-configuration in an out of coverage situation, the configuration message and / or the stored pre-configuration defining a plurality of bandwidth portions across a set of resources.

4. The user equipment UE according to claim 1, wherein: The transceiver is configured to receive signaling indicating activation or deactivation of one or more of the bandwidth parts.

5. The user equipment UE according to claim 1, wherein: In case only a single bandwidth part is activated, the single bandwidth part includes a control channel with a UE-specific search space USS and / or a control channel with a common search space CSS, so as to allow the UE to simultaneously process unicast or multicast communications and broadcast communications using the single bandwidth part.

6. The user equipment UE according to claim 1, wherein: In a case where at least a first bandwidth part and a second bandwidth part are activated, the first bandwidth part includes at least a control channel with a UE-specific search space USS, and the second bandwidth part includes at least a control channel with a common search space CSS, so as to allow the UE to use the first bandwidth part and the second bandwidth part to simultaneously process unicast communication and broadcast communication.

7. The user equipment UE according to claim 1, wherein: In a case where at least a first bandwidth part and a second bandwidth part are activated, the first bandwidth part includes at least a control channel with a UE-specific search space USS and / or a control channel with a common search space CSS, and the second bandwidth part includes at least a control channel with a UE-specific search space USS and / or a control channel with a common search space CSS, so as to allow the UE to use the first bandwidth part and the second bandwidth part to simultaneously process unicast communication and broadcast communication.

8. The user equipment UE according to claim 1, wherein: The control channel is defined by resources of only one of the bandwidth parts.

9. The user equipment UE according to claim 1, wherein: One of the bandwidth parts is a default bandwidth part, in which resource allocation for one or more services is sent, wherein control resources are either configured by the wireless communication system or pre-configured in the UE, and the default bandwidth part includes at least one control channel with a common search space CSS to allow the UE to listen to one or more services in the vicinity of the UE.

10. The user equipment UE according to claim 1, wherein: The control channel in the default bandwidth part points to another control channel in another bandwidth part where actual transmission occurs, so that other user equipments UE know that there is another bandwidth part with control resources to be monitored and / or decoded by the UE.

11. The user equipment UE according to claim 1, wherein: A control channel in the default bandwidth part points to another data channel in another bandwidth part, and wherein the UE automatically switches back to the default bandwidth part after transmission of data or timeout in other bandwidth parts, or in response to control signaling such as a control channel or control unit in one or more of the active bandwidth parts.

12. A wireless communication network, comprising: one or more base stations BS, and One or more user equipments UE as claimed in claim 1.

13. A method for transmitting / receiving in a wireless communication system, the method comprising: A resource set is provided by the wireless communication system, the resource set comprising a plurality of resources to be allocated to each transmission in the wireless communication system, wherein The resource set includes a plurality of subcarriers in the frequency domain and a plurality of symbols in the time domain, and the resource set includes at least one bandwidth part, In the bandwidth portion, a plurality of transmission resource pools and / or reception resource pools are defined by respective subsets of resources of the bandwidth portion, the plurality of transmission resource pools and / or reception resource pools comprising at least a first transmission / reception resource pool and a second transmission / reception resource pool, The bandwidth portion includes a first control channel and a second control channel, wherein the first control channel and the second control channel are defined by resources of the bandwidth portion outside the first transmit / receive resource pool and the second transmit / receive resource pool, wherein the first control channel is provided to the first transmit / receive resource pool, wherein the second control channel is provided to the second transmit / receive resource pool, and wherein the first control channel and the second control channel are provided for processing control messages and scheduling allocation messages, the control messages being directed to data to be transmitted within the respective transmit / receive resource pools, and Resources of one or more of the plurality of transmission resource pools and / or reception resource pools are allocated to perform transmission and reception of a base station (300) and / or a user equipment UE (302) of a wireless communication system.

14. A non-transitory computer program product comprising a computer readable medium storing instructions, which when executed on a computer perform the method of claim 13.

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