Method and device used for wireless communication

Abstract

The invention discloses a method and a device used for wireless communication. A first node receives a first signaling, wherein the first signaling configures a first sub-band for SpCell; performing a first channel access procedure for one intended uplink transmission, the one intended uplink transmission being in the first sub-band of the SpCell; performing a first operation as a response to the first channel access procedure failing to access the channel prior to the intended uplink transmission; wherein the first operation includes not transmitting the intended uplink transmission; the first operation includes whether a first sub-operation depends on the first signaling; when the first signaling is BWP-Uplink Common, the first operation comprises a first sub-operation, and when the first signaling is for full duplex, the first operation does not comprise the first sub-operation; the first sub-operation is active uplink BWP switching of the SpCell, or the first sub-operation is to indicate consistent LBT failure to an RRC (Radio Resource Control) layer. According to the invention, the sub-band operation can be differentiated.

Description

Technical Field

[0001] The present application relates to methods and devices in wireless communication systems, and more particularly to transmission methods and devices supporting flexible transmission direction configuration in wireless communication. Background Art

[0002] In the future, the application scenarios of wireless communication systems will become more and more diversified, and different application scenarios will put forward different performance requirements for the system. In order to meet the different performance requirements of various application scenarios, the 3rd Generation Partner Project (3GPP) RAN

[0003] At the 3GPP RAN (Radio Access Network) plenary meeting #72, it was decided to study the new air interface technology (NR, New Radio) (or 5G). At the 3GPP RAN plenary meeting #75, the WI (Work Item) of the new air interface technology (NR, New Radio) was passed, and the standardization work on NR began.

[0004] Full duplex division (SBFD) can significantly improve spectrum efficiency and thus become a research hotspot.

[0005] SubBandFull Duplex (SubBandFull Duplex) has particularly aroused the research interest of the industry and is also one of the technologies potentially supported by 6G. Summary of the invention

[0006] In the existing NR system, spectrum resources are statically divided into FDD (Frequency Division Duplex) spectrum and TDD (Time Division Duplex) spectrum. For TDD spectrum, both base stations and UE (User Device) operate in half-duplex mode. This half-duplex mode can effectively avoid self-interference and alleviate cross-link interference, but it also brings about a decrease in resource utilization and an increase in transmission delay. To address these problems, supporting SBFD on TDD spectrum is an effective solution. The impact of the introduction of SBFD on UE behavior needs further study.

[0007] In view of the problem of BWP switching caused by random access process in a system supporting SBFD, the present application discloses a solution. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily. Further, although the original intention of the present application is for SBFD scenarios, the present application is also applicable to other scenarios facing similar problems (for example, scenarios where there are changes in link direction, or other scenarios that support multi-level configuration of transmission direction, or base stations or user equipment with stronger capabilities, such as supporting full-duplex scenarios with the same frequency, or for different application scenarios, such as eMBB, URLLC, non-terrestrial networks, synaesthesia integrated networks, smart metasurfaces, terahertz networks), to achieve similar technical effects. In addition, the use of a unified solution for different scenarios also helps to reduce hardware complexity or improve compatibility. In the absence of conflict, the embodiments of any node in the present application and the features in the embodiments can be applied to any other node, and vice versa. In particular, the interpretation of terms (Terminology), nouns, functions, and variables in the present application (if not otherwise specified) can refer to the definitions in the 3GPP specification protocols TS36 series, TS38 series, and TS37 series.

[0008] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0009] receiving a first information block, where the first information block is a first subband configured as full-duplex for a first cell, where the first subband includes at least one resource block;

[0010] Sending UL-SCH on the first uplink BWP;

[0011] Initiating a random access procedure on the first cell;

[0012] Among them, no PRACH opportunity is configured on the first uplink BWP; whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP depends on whether the PRACH opportunity is configured on the first subband; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0013] As an embodiment, the first sub-band is used for uplink and downlink transmission.

[0014] As an embodiment, the resource blocks included in the first uplink BWP (BandWidth Part) and the resource blocks included in the first subband constitute usable uplink resource blocks (RB).

[0015] As an embodiment, the above method can flexibly adjust the uplink bandwidth to adapt to changing business requirements.

[0016] As an embodiment, the first subband is common to all cells.

[0017] As an embodiment, the above method can optimize system performance by adjusting the uplink bandwidth at the base station granularity.

[0018] As an embodiment, the first subband is specific to the first node.

[0019] As an embodiment, the above method adjusts the uplink bandwidth at the UE granularity to optimize the service support for the UE.

[0020] As an embodiment, the above method determines whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP according to whether a PRACH (Physical Random Access Channel) occasion is configured on the first subband. This can reduce the UE's BWP switching operations while ensuring the performance of the random access process.

[0021] As an embodiment, the above method has backward compatibility and can simplify system design.

[0022] According to one aspect of the present application, the features of the above method include:

[0023] No PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP.

[0024] As an embodiment, the above method has backward compatibility and can simplify system design.

[0025] According to one aspect of the present application, the features of the above method include:

[0026] The first cell is a special cell, and an active downlink BWP of the first cell is switched from a first downlink BWP to a second downlink BWP;

[0027] Wherein, before initiating the random access process, DL-SCH is received on the first downlink BWP; the first downlink BWP and the second downlink BWP are both configured on the first cell, and the second downlink BWP and the second uplink BWP have the same BWP identifier.

[0028] According to one aspect of the present application, the features of the above method include:

[0029] Executing the random access process includes: sending a random access preamble in a first PRACH opportunity included in the second uplink BWP, the first PRACH opportunity occupying at least one uplink symbol in the time domain; and monitoring a random access response on the second downlink BWP.

[0030] According to one aspect of the present application, the features of the above method include:

[0031] A PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is maintained as the first uplink BWP.

[0032] As an embodiment, when the active uplink BWP of the first cell is not switched, the random access process will not trigger the switching of the active downlink BWP of the first cell.

[0033] As an embodiment, configuring a PRACH opportunity on the first subband can increase random access resources.

[0034] As an embodiment, the above method reduces the number of BWP switching times.

[0035] According to one aspect of the present application, the features of the above method include:

[0036] Executing the random access process includes: sending a random access preamble in a second PRACH opportunity included in the first subband, the second PRACH opportunity occupying at least one full-duplex symbol in the time domain;

[0037] The first information block indicates the at least one full-duplex symbol.

[0038] As an embodiment, the above method uses the PRACH opportunity configured in the first subband to perform a random access process, which can reduce the probability of random access collision and reduce the random access delay.

[0039] According to one aspect of the present application, the features of the above method include:

[0040] Executing the random access process includes: monitoring a random access response on an active downlink BWP of the first cell; the first subband is located in the active downlink BWP of the first cell, and the first cell is a SpCell.

[0041] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0042] Sending a first information block, where the first information block is a first subband configured for full-duplex in a first cell, where the first subband includes at least one resource block;

[0043] Among them, UL-SCH is sent on the first uplink BWP; a random access process is initiated on the first cell; no PRACH opportunity is configured on the first uplink BWP; whether the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP depends on whether the PRACH opportunity is configured on the first subband; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0044] According to one aspect of the present application, the features of the above method include:

[0045] No PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP.

[0046] According to one aspect of the present application, the features of the above method include:

[0047] The first cell is a special cell, and an active downlink BWP of the first cell is switched from a first downlink BWP to a second downlink BWP;

[0048] Wherein, before initiating the random access process, DL-SCH is received on the first downlink BWP; the first downlink BWP and the second downlink BWP are both configured on the first cell, and the second downlink BWP and the second uplink BWP have the same BWP identifier.

[0049] According to one aspect of the present application, the features of the above method include:

[0050] Executing the random access process includes: receiving a random access preamble in a first PRACH opportunity included in the second uplink BWP, the first PRACH opportunity occupying at least one uplink symbol in the time domain; and sending a random access response on the second downlink BWP.

[0051] According to one aspect of the present application, the features of the above method include:

[0052] A PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is maintained as the first uplink BWP.

[0053] According to one aspect of the present application, the features of the above method include:

[0054] Executing the random access process includes: receiving a random access preamble in a second PRACH opportunity included in the first subband, the second PRACH opportunity occupying at least one full-duplex symbol in the time domain;

[0055] The first information block indicates the at least one full-duplex symbol.

[0056] According to one aspect of the present application, the features of the above method include:

[0057] Executing the random access process includes: monitoring a random access response on an active downlink BWP of the first cell; the first subband is located in the active downlink BWP of the first cell, and the first cell is a SpCell.

[0058] The present application discloses a first node used for wireless communication, characterized in that it includes:

[0059] A first receiver receives a first information block, where the first information block is a first subband configured for full duplex in a first cell, where the first subband includes at least one resource block;

[0060] A first transceiver sends a UL-SCH on a first uplink BWP; and initiates a random access process on the first cell;

[0061] Among them, no PRACH opportunity is configured on the first uplink BWP; whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP depends on whether the PRACH opportunity is configured on the first subband; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0062] The present application discloses a second node used for wireless communication, characterized in that it includes:

[0063] A second transmitter sends a first information block, where the first information block is a first subband configured for full duplex in a first cell, and the first subband includes at least one resource block;

[0064] Among them, UL-SCH is sent on the first uplink BWP; a random access process is initiated on the first cell; no PRACH opportunity is configured on the first uplink BWP; whether the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP depends on whether the PRACH opportunity is configured on the first subband; the first uplink BWP and the second uplink BWP are both configured on the first cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0066] Figure 1A signal processing flow chart in a first node according to an embodiment of the present application is illustrated;

[0067] Figure 2 A schematic diagram illustrating a network architecture according to an embodiment of the present application is illustrated;

[0068] Figure 3 A schematic diagram illustrating a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0069] Figure 4 A hardware module schematic diagram of a communication device according to an embodiment of the present application is illustrated;

[0070] Figure 5 An example of a wireless signal transmission flow chart according to an embodiment of the present application is provided;

[0071] Figure 6 A signal processing flow chart in a first node according to an embodiment of the present application is illustrated;

[0072] Figure 7 The signal processing flowchart in the first node according to one embodiment of the present application is illustrated;

[0073] Figure 8 A schematic diagram illustrating an active uplink BWP and an active downlink BWP according to an embodiment of the present application is illustrated;

[0074] Fig. 9 A schematic diagram illustrating a first sub-band according to an embodiment of the present application is illustrated;

[0075] Fig.10 A schematic diagram illustrating an active uplink BWP, an active downlink BWP, a first subband and a full-duplex symbol according to an embodiment of the present application is illustrated;

[0076] Fig.11 An example structural block diagram of a processing device in a first node according to an embodiment of the present application is shown;

[0077] Fig.12 The structural block diagram of the processing device in the second node according to an embodiment of the present application is illustrated. DETAILED DESCRIPTION

[0078] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0079] Example 1

[0080] Embodiment 1 illustrates a signal processing flow chart in a first node according to an embodiment of the present application, as shown in the attached Figure 1 shown.

[0081] In embodiment 1, the first node 100 receives a first information block in step 101, and the first information block is configured as a full-duplex first subband for the first cell; in step 102, UL-SCH is sent on the first uplink BWP; in step 103, a random access process is initiated on the first cell; wherein, the first subband includes at least one resource block; no PRACH opportunity is configured on the first uplink BWP; whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP depends on whether the PRACH opportunity is configured on the first subband; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0082] As an embodiment, a first information block is received, wherein the first information block is a first subband configured as full-duplex for a first cell.

[0083] As an embodiment, the first information block includes higher layer information or higher layer parameter configuration.

[0084] As an embodiment, the first information block includes one or more IE (Information element) included in an RRC (Radio Resource Control) layer signaling, or the first information block includes one or more fields in an IE included in an RRC layer signaling.

[0085] As an embodiment, the first information block includes part or all of the fields included in a SIB (System Information Block).

[0086] As an embodiment, the first information block is cell common (Cell Common) or the first information block is cell specific (Cell specific).

[0087] As an embodiment, the first information block is group common.

[0088] As an embodiment, the first information block is user equipment specific (UE specific or UEdedicated).

[0089] As an embodiment, the first information block is configured for a subband (per subband).

[0090] As an embodiment, the first information block is configured for a carrier (per carrier).

[0091] As an embodiment, the first information block is configured for BWP.

[0092] As an embodiment, the first information block includes part or all of the fields in the RRCReconfiguration IE.

[0093] As an embodiment, the first information block includes part or all of the fields in the RRCResume (RRC recovery) IE.

[0094] As an embodiment, the first information block includes part or all of the fields in SBFDConfigDedicated (SBFD dedicated configuration) IE.

[0095] As an embodiment, the first information block includes part or all of the fields in SBFDConfigCommon (SBFD common configuration) IE.

[0096] As an embodiment, the first information block includes part or all of the fields in SBFDConfig (SBFD configuration) IE.

[0097] As an embodiment, the first information block includes SBFD-UplinkConfig (SBFD uplink configuration).

[0098] As an embodiment, the first information block includes part or all of the fields in the BWP-DownlinkDedicated (downlink specific) IE.

[0099] As an embodiment, the first information block includes part or all of the fields in the BWP-DownlinkCommon IE.

[0100] As an embodiment, the first information block includes part or all of the fields in ServingCellConfig (serving cell configuration) IE.

[0101] As an embodiment, the first information block includes part or all of the fields in ServingCellConfigCommon (serving cell common configuration) IE.

[0102] As an embodiment, the first information block includes part or all of the fields in ServingCellConfigCommonSIB (serving cell SIB common configuration) IE.

[0103] As an embodiment, the first information block includes part or all of the fields in the CellGroupConfig (cell group configuration) IE.

[0104] As an embodiment, the first information block includes part or all of the fields in the SpCellConfig (special cell configuration) IE.

[0105] As an embodiment, the first information block includes part or all of the fields in SCellConfig (Secondary Cell Configuration) IE.

[0106] As an embodiment, the first information block includes part or all of the fields in DCI (downlink control information) format 2_N, where N is a non-negative integer.

[0107] As an embodiment, the first information block includes part or all of the fields in DCI format 2_10.

[0108] As a sub-embodiment of the above embodiment, the first information block including DCI may provide greater flexibility.

[0109] As an embodiment, the first information block configures the first sub-band, and the first sub-band is used for SBFD.

[0110] As an embodiment, the first information block configuring the first subband includes: the first information block explicitly or implicitly indicating the first subband.

[0111] As an embodiment, the first information block configures the first sub-band including: the first information block indicates the starting RB (or the lowest indexed RB) of the first sub-band and the number of RBs included in the first sub-band.

[0112] As an embodiment, the first information block configures the first subband including: the first information block indicates the RIV (resource indicator value) corresponding to the first subband, and the starting RB of the first subband and the number of consecutive RBs included in the first subband are used to generate the RIV.

[0113] As an embodiment, the first information block configures the first subband including: the first information block indicates the number of CRBs (common resource block) with the lowest index included in the first subband and the interval between frequency point A (pointA) and the number of consecutive CRBs included in the first subband.

[0114] As an embodiment, the first cell is a service cell of the first node.

[0115] As an embodiment, the first cell is a SpCell (Special Cell).

[0116] As a sub-embodiment of the above embodiment, the SpCell belongs to MCG (Master Cell Group), and the first cell is PCell (Primary Cell).

[0117] As a sub-embodiment of the above embodiment, the SpCell belongs to SCG (Secondary Cell Group), and the first cell is PSCell (Primary SCG (Secondary Cell Group) Cell, primary SCG cell).

[0118] As an embodiment, the first cell is a SCell, the SCell belongs to an MCG, or the SCell belongs to an SCG.

[0119] As an embodiment, the first cell is configured with a frequency band.

[0120] As an embodiment, the first cell is configured with at least one frequency band.

[0121] As an embodiment, a frequency band includes a plurality of consecutive RBs (resource blocks).

[0122] As an embodiment, the first information block is configured as a full-duplex first subband including: the frequency domain resource for downlink transmission in an uplink BWP of the first cell configured by the first information block is the first subband.

[0123] As an embodiment, the first information block is configured as a full-duplex first subband including: the frequency domain resource for uplink transmission in a downlink BWP of the first cell configured by the first information block is the first subband.

[0124] As an embodiment, the first information block is configured as a full-duplex first subband including: the first information block is configured in an uplink subband on the first cell, and the frequency domain resources overlapping between the uplink subband and a downlink BWP of the first cell are the first subband.

[0125] As an embodiment, the first subband is located within a frequency band included in the first cell.

[0126] As an embodiment, the first subband is located in a downlink BWP of the first cell.

[0127] As an embodiment, the first subband is located in an active downlink BWP of the first cell.

[0128] As an embodiment, the first sub-band is a full duplex sub-band.

[0129] As an embodiment, the first sub-band is a full-duplex sub-band located in the downlink BWP and used for uplink transmission.

[0130] As an embodiment, the first sub-band is a sub-band that can be used for uplink transmission in a full-duplex symbol.

[0131] As an embodiment, the first information block indicates the frequency domain position and bandwidth of the first subband.

[0132] As an embodiment, the first information block indicates the subcarrier spacing (Subcarrier Spacing) of the first subband.

[0133] As an embodiment, the first information block indicates the transmission direction on the first sub-band.

[0134] As an embodiment, the first subband includes a resource block (RB).

[0135] As an embodiment, the first subband includes a plurality of consecutive resource blocks.

[0136] As an embodiment, one resource block is defined as 12 consecutive subcarriers in the frequency domain.

[0137] As an embodiment, the first subband includes usable uplink resource blocks.

[0138] As an embodiment, UL-SCH (Uplink Shared Channel) is sent on the first subband

[0139] As an embodiment, before initiating the random access process, the active uplink BWP of the first cell is the first uplink BWP.

[0140] As an embodiment, UL-SCH (Uplink Shared Channel) is sent on the first uplink BWP.

[0141] As an embodiment, before initiating the random access process, the first uplink BWP and the first subband constitute an available uplink resource block.

[0142] As an embodiment, the UL-SCH is a transport channel.

[0143] As an embodiment, the UL-SCH is a channel located between the MAC (Medium Access Control) sublayer and the physical layer for uplink transmission.

[0144] As an embodiment, sending UL-SCH on the first uplink BWP includes: the first uplink BWP is an active uplink BWP.

[0145] As an embodiment, UL-SCH is sent only on the active uplink BWP.

[0146] As an embodiment, sending UL-SCH includes: sending information on the UL-SCH channel.

[0147] As an embodiment, sending UL-SCH includes: carrying information in the UL-SCH channel.

[0148] As an embodiment, the data on the UL-SCH is a TB (Transport Block), which is processed by the physical layer to generate a wireless signal and then sent on a PUSCH (Physical Uplink Shared Channel).

[0149] For a downlink transmission channel, including but not limited to a DL-SCH (Downlink-Shared Channel), receiving the downlink channel includes: receiving information on the downlink channel, or carrying information on the downlink channel.

[0150] As an embodiment, the received wireless signal is restored to TB after being processed by the physical layer, and then transmitted to the MAC entity (entity) for processing through the DL-SCH channel.

[0151] As an embodiment, the first uplink BWP is activated.

[0152] As an embodiment, the first uplink BWP is an active uplink BWP.

[0153] As an embodiment, CSI (Channel Status Information) is reported on the first uplink BWP.

[0154] As an embodiment, if PUCCH (Physical Uplink Control Channel) resources are configured on the first uplink BWP, the PUCCH is sent on the first uplink BWP.

[0155] As an embodiment, no PRACH occasion is configured on the first uplink BWP.

[0156] As an embodiment, a PRACH opportunity is a PRACH time-frequency opportunity.

[0157] As an embodiment, a PRACH opportunity is a time-frequency resource block occupied by a PRACH transmission.

[0158] As an embodiment, one PRACH opportunity is a time-frequency resource block occupied by MSG1 transmission.

[0159] As an embodiment, one PRACH opportunity is a time-frequency resource block occupied by MSGA transmission.

[0160] As an embodiment, the MSGA (Message A) transmission includes PRACH preamble transmission and PUSCH transmission associated with the PRACH preamble, and the PUSCH carries the content in the MSGA cache.

[0161] As an embodiment, not configuring a PRACH opportunity on the first uplink BWP includes: not sending a PRACH on the frequency domain resources of the first uplink BWP.

[0162] As an embodiment, sending PRACH, or PRACH sending includes: sending a signal on a PRACH channel.

[0163] As an embodiment, sending PRACH, or sending PRACH includes: carrying information in the PRACH channel.

[0164] For other uplink physical channels, including but not limited to PUSCH and PUCCH, the explanation of sending the uplink physical channels is the same as above and will not be repeated here.

[0165] For downlink physical channels, including but not limited to PDSCH (Physical Downlink Shared Channel) and PDCCH (Physical Downlink Control Channel), the interpretation of receiving the downlink physical channels can refer to the uplink physical channels. The difference is that sending is changed to receiving, which will not be repeated here.

[0166] As an embodiment, a random access process is initiated on the first cell.

[0167] As an embodiment, the random access process is triggered by a PDCCH order (command).

[0168] As an embodiment, the random access process is triggered by the MAC entity of the first node itself.

[0169] As an embodiment, the random access process is triggered by an event at the RRC layer.

[0170] As an embodiment, the event of the RRC layer is SR (Scheduling Request) failure.

[0171] As an embodiment, the RRC layer event is beam failure recovery.

[0172] As an embodiment, the event of the RRC layer is to establish time alignment with a PTAG (Primary Timing Advance Group) or a STAG (Secondary Timing Advance Group).

[0173] As an embodiment, the event of the RRC layer is that uplink data arrives and there are no PUCCH resources for SR.

[0174] As an embodiment, the event of the RRC layer is that uplink or downlink data arrives and the UL (Uplink) synchronization state is "out of synchronization".

[0175] As an embodiment, initiating a random access process on the first cell includes: selecting a carrier on the first cell for performing the random access process.

[0176] As a sub-embodiment of the above embodiment, the carrier is UL, or SUL (Supplementary Up Link).

[0177] As an embodiment, initiating a random access process on the first cell includes: selecting a random access resource on the first cell for performing the random access process.

[0178] As a sub-embodiment of the above embodiment, the random access resource includes a random access preamble.

[0179] As a sub-embodiment of the above embodiment, the random access resource includes a PRACH opportunity.

[0180] As a sub-embodiment of the above embodiment, the random access resource includes power for sending PRACH.

[0181] As a sub-embodiment of the above embodiment, the random access resource includes a beam for sending PRACH.

[0182] As an embodiment, initiating a random access process on the first cell includes operations before sending a random access preamble.

[0183] As an embodiment, performing a random access procedure on the first cell includes sending a random access preamble.

[0184] As an embodiment, when the PRACH opportunity is not configured on the first uplink BWP, whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP depends on whether the PRACH opportunity is configured on the first subband.

[0185] As an embodiment, when the PRACH opportunity is not configured on the first uplink BWP, whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP is related to whether the PRACH opportunity is configured on the first subband.

[0186] As an embodiment, when the PRACH opportunity is not configured on the first uplink BWP, it is determined whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP according to whether the PRACH opportunity is configured on the first subband.

[0187] As an embodiment, a PRACH opportunity configured on an uplink BWP is configured in an uplink symbol in the time domain and is configured on the uplink BWP in the frequency domain.

[0188] As a sub-embodiment of the above embodiment, the IE for configuring the uplink BWP includes a domain for configuring the PRACH opportunity, and the domain includes at least one of RACH-ConfigCommon (common configuration of random access channel), Rach-ConfigCommonTwoStepRA (common configuration of 2-step random access channel), RACH-ConfigDedicated (dedicated configuration of random access channel), RACH-ConfigTwoTA (2 timing advance random access channel configuration), RACH-ConfigGeneric (generic configuration of random access channel) and RACH-ConfigGenericTwoStepRA (generic configuration of 2-step random access channel).

[0189] As an embodiment, a PRACH opportunity is configured on the second uplink BWP.

[0190] As an embodiment, no PRACH opportunity is configured on the second uplink BWP, but a second subband for full-duplex is configured on the downlink BWP corresponding to the second uplink BWP, and a PRACH opportunity is configured on the second subband; wherein the second uplink BWP and the downlink BWP have the same BWP identifier.

[0191] As an embodiment, a PRACH opportunity configured on the second subband is configured in a full-duplex symbol in the time domain and is configured on the second subband in the frequency domain.

[0192] As an embodiment, the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0193] As an embodiment, the frequency domain resources included in the first uplink BWP and the frequency domain resources included in the second uplink BWP both belong to a frequency band configured for the first cell.

[0194] As an embodiment, the first uplink BWP and the second uplink BWP have no overlapping in the frequency domain.

[0195] As an embodiment, the first uplink BWP and the second uplink BWP partially overlap in the frequency domain.

[0196] As an embodiment, multiple uplink BWPs are configured on the first cell, and the multiple uplink BWPs include the first uplink BWP and the second uplink BWP.

[0197] As an embodiment, at any one time, only one uplink BWP among the multiple uplink BWPs is activated.

[0198] As an embodiment, the BWP switching includes: activating an inactive BWP and deactivating an active BWP.

[0199] As an embodiment, the MAC entity of the first node itself controls whether to perform BWP switching when the random access process is started.

[0200] Example 2

[0201] Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the attached Figure 2 shown. Figure 2A diagram illustrating a network architecture 200 for NR 5G, LTE (Long-Term Evolution) and LTE-A (Long-Term Evolution Advanced) systems. The NR 5G, LTE or LTE-A network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 may include one or more UEs (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220 and Internet Services 230. The 5GS / EPS may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS provides packet switching services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit switching services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol terminations toward UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a TRP (Transmission Reception Point, sending and receiving node) or some other suitable terminology. In a NTN (Non Terrestrial Network, non-terrestrial / satellite network) network, gNB 203 may be a satellite, an aircraft, or a ground base station relayed by a satellite. gNB 203 provides an access point to 5GC / EPC 210 for UE 201.Examples of UE 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, cars, vehicle-mounted devices, vehicle-mounted communication units, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term. gNB203 is connected to 5GC / EPC210 via the S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF213. MME / AMF / SMF211 is the control node that handles signaling between UE201 and 5GC / EPC210. ​​In general, MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF212, which itself is connected to P-GW / UPF213. P-GW provides UE IP address allocation and other functions. P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-corresponding Internet protocol services, which may specifically include Internet, Intranet, IMS (IP Multimedia Subsystem) and PS (Packet Switching) streaming services.

[0202] As an embodiment, the UE201 corresponds to the first node in this application.

[0203] As an embodiment, the NR node B203 corresponds to the second node in this application.

[0204] As an embodiment, the gNB203 is a macro cell base station.

[0205] As an embodiment, the gNB203 is a micro cell base station.

[0206] As an embodiment, the gNB203 is a pico cell base station.

[0207] As an embodiment, the gNB203 is a home base station (Femtocell).

[0208] As an embodiment, the gNB203 is a base station device that supports large delay difference.

[0209] As an embodiment, the gNB203 is a flying platform device.

[0210] As an embodiment, the gNB203 is a satellite device.

[0211] As an embodiment, the gNB203 is a testing device (e.g., a transceiver that simulates some functions of a base station, a signaling tester).

[0212] As an embodiment, the wireless link from the UE201 to the gNB203 is an uplink, and the uplink is used to perform uplink transmission.

[0213] As an embodiment, the wireless link from the gNB203 to the UE201 is a downlink, and the downlink is used to perform downlink transmission.

[0214] As an embodiment, the UE201 and the gNB203 are respectively connected via a Uu interface.

[0215] Example 3

[0216] Embodiment 3 illustrates a schematic diagram of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application, as shown in the attached figure. Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture of the control plane 300 of the UE and gNB is shown in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to as PHY 301 in this article. Layer 2 (L2 layer) 305 is above PHY 301 and is responsible for the link between the UE and the gNB through PHY 301. The L2 layer 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. The PDCP sublayer 304 provides data encryption and integrity protection. The PDCP sublayer 304 also provides support for inter-zone mobility of UEs between gNBs. The RLC sublayer 303 provides segmentation and reassembly of data packets, and retransmission of lost data packets through ARQ. The RLC sublayer 303 also provides duplicate data packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channel identities. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between UEs. The MAC sublayer 302 is also responsible for HARQ (Hybrid Automatic Repeat Request) operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the gNB and the UE. Although not shown in the figure, a V2X layer may also be provided above the RRC sublayer 306 in the control plane 300 of the UE. The V2X layer is responsible for generating a PC5 QoS parameter group and QoS rules based on the received service data or service request, generating a PC5 QoS flow corresponding to the PC5 QoS parameter group, and sending the PC5 QoS flow identifier and the corresponding PC5 QoS parameter group to the AS (Access Stratum) layer for the AS layer to perform QoS processing on the data packets belonging to the PC5 QoS flow identifier; the V2X layer also includes a PC5-S signaling protocol (PC5-SignalingProtocol) sublayer, and the V2X layer is responsible for indicating to the AS layer whether each transmission is a PC5-S transmission or a V2X service data transmission.The wireless protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The wireless protocol architecture in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce wireless transmission overhead. The L2 layer 355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS (Quality of Service) flows and data radio bearers (DRBs) to support the diversity of services. The wireless protocol architecture of the UE in the user plane 350 may include, at the L2 layer, a SDAP sublayer 356, a PDCP sublayer 354, a portion of or all of the protocol sublayers of the RLC sublayer 353 and the MAC sublayer 352. Although not shown, the UE may also have several upper layers above the L2 layer 355, including a network layer (e.g., an IP layer) terminated at the P-GW on the network side and an application layer terminated at the other end of the connection (e.g., a remote UE, a server, etc.).

[0217] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0218] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0219] As an embodiment, data is transmitted between the MAC302 and the PHY301, and between the MAC352 and the PHY351 through a transmission channel respectively; for downlink transmission, the transmission channel is DL-SCH, and for uplink transmission, the transmission channel is UL-SCH.

[0220] As an embodiment, the first information block in the present application is generated in the RRC306.

[0221] As an embodiment, the first information block in the present application is generated in the PHY301 or the PHY351.

[0222] As an embodiment, the random access preamble in the present application is generated in the PHY301 or the PHY351.

[0223] As an embodiment, the random access response in the present application is generated by the MAC302 or the MAC352.

[0224] As an embodiment, the random access response in the present application is generated in the PHY301 or the PHY351.

[0225] As an embodiment, the L2 layer 305 or 355 belongs to a higher layer.

[0226] As an embodiment, the RRC sublayer 306 in the L3 layer belongs to a higher layer.

[0227] Example 4

[0228] Embodiment 4 illustrates a hardware module schematic diagram of a communication device according to an embodiment of the present application, as shown in the attached Figure 4 shown. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0229] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454 and an antenna 452.

[0230] The second communication device 410 includes a controller / processor 475, a memory 476, a data source 477, a receive processor 470, a transmit processor 416, a multi-antenna receive processor 472, a multi-antenna transmit processor 471, a transmitter / receiver 418 and an antenna 420.

[0231] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, the upper layer data packets from the core network or the upper layer data packets from the data source 477 are provided to the controller / processor 475. The core network and the data source 477 represent all the protocol layers above the L2 layer. The controller / processor 475 implements the functionality of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for the retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0232] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packets from the second communication device 410. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 for L3 processing.

[0233] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, the upper layer data packets are provided to the controller / processor 459 using the data source 467. The data source 467 represents all the protocol layers above the L2 layer. Similar to the transmission function at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0234] In the transmission from the first communication device 450 to the second communication device 410, the functions at the second communication device 410 are similar to the reception functions at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 that stores program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the first communication device 450. The upper layer data packets from the controller / processor 475 may be provided to the core network or all protocol layers above the L2 layer, and various control signals may also be provided to the core network or L3 for L3 processing.

[0235] As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor, and the first communication device 450 apparatus at least: receives a first information block, the first information block is a first subband configured for full-duplex for a first cell, the first subband includes at least one resource block; sends UL-SCH on a first uplink BWP; initiates a random access process on the first cell; wherein no PRACH opportunity is configured on the first uplink BWP; whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP depends on whether a PRACH opportunity is configured on the first subband; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0236] As an embodiment, the first communication device 450 apparatus includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates an action when executed by at least one processor, and the action includes: receiving a first information block, wherein the first information block is a first subband configured for full-duplex for a first cell, and the first subband includes at least one resource block; sending UL-SCH on a first uplink BWP; initiating a random access process on the first cell; wherein no PRACH opportunity is configured on the first uplink BWP; whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP depends on whether a PRACH opportunity is configured on the first subband; and both the first uplink BWP and the second uplink BWP are configured on the first cell.

[0237] As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 410 apparatus at least: sends a first information block, the first information block is a first subband configured for full-duplex for the first cell, the first subband includes at least one resource block; wherein UL-SCH is sent on the first uplink BWP; a random access procedure is initiated on the first cell; a PRACH opportunity is not configured on the first uplink BWP; whether the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP depends on whether a PRACH opportunity is configured on the first subband; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0238] As an embodiment, the second communication device 410 apparatus includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates an action when executed by at least one processor, the action including: sending a first information block, the first information block is a first subband configured for full-duplex for the first cell, the first subband includes at least one resource block; wherein, UL-SCH is sent on the first uplink BWP; a random access process is initiated on the first cell; a PRACH opportunity is not configured on the first uplink BWP; whether the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP depends on whether a PRACH opportunity is configured on the first subband; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0239] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0240] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0241] As an embodiment, the first communication device 450 is a UE.

[0242] As an embodiment, the first communication device 450 is a relay.

[0243] As an embodiment, the second communication device 410 is a base station device.

[0244] As an embodiment, the second communication device 410 is a distribution unit of a base station.

[0245] As an embodiment, the second communication device 410 is a piece of code in a distributed unit of a base station.

[0246] As an embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416 or the controller / processor 475 is used to send the first information block in the present application.

[0247] As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456 or the controller / processor 459 is used to receive the first information block in the present application.

[0248] As an embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468 or the controller / processor 459 is used to send the random access preamble in the present application.

[0249] As an embodiment, at least one of the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470 or the controller / processor 475 is used to receive the random access preamble in the present application.

[0250] As an embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416 or the controller / processor 475 is used to send a random access response in the present application.

[0251] As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456 or the controller / processor 459 is used to receive the random access response in the present application.

[0252] Example 5

[0253] Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 As shown in the attached Figure 5 In the example, the first node N51 and the second node N52 transmit signals via an air interface. It should be noted that the sequence in this example does not limit the signal transmission sequence and implementation sequence in this application.

[0254] for First node N51 , receiving a first information block in step S511; initiating a random access process in step S512; sending a random access preamble in the first cell in step S513; and monitoring a random access response on an active downlink BWP of the first cell in step S514.

[0255] for Second node N52 , sending a first information block in step S521; receiving a random access preamble on an active uplink BWP of the first cell in step S522; and sending a random access response on an active downlink BWP of the first cell in step S523.

[0256] In Example 5, a first information block is received, wherein the first information block is configured for a first subband of full-duplex for a first cell, and the first subband includes at least one resource block; a UL-SCH is sent on a first uplink BWP; a random access procedure is initiated on the first cell; wherein no PRACH opportunity is configured on the first uplink BWP; whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP depends on whether a PRACH opportunity is configured on the first subband; both the first uplink BWP and the second uplink BWP are configured on the first cell; and the random access procedure is performed.

[0257] As an embodiment, the second node N52 is a base station maintaining a serving cell of the first node N51.

[0258] As an embodiment, the second node N52 is a Transmit / Receive Point (TRP) of a service cell of the first node N51.

[0259] As an embodiment, the second node N52 is a maintaining base station of a master cell group (MCG) of the first node N51.

[0260] As an embodiment, the second node N52 is a base station maintaining a secondary cell group (SCG) of the first node N51.

[0261] As an embodiment, a CG (cell group) includes at least one cell.

[0262] As an embodiment, the second node N52 is a MgNB (master gNB).

[0263] As an embodiment, the second node N52 is an SgNB (secondary gNB).

[0264] As an embodiment, the first node N51 is a UE.

[0265] As an embodiment, before initiating the random access process, the first node sends UL-SCH on the first subband.

[0266] As an embodiment, before initiating the random access process, the first node sends UL-SCH on the active uplink BWP of the first cell, and receives DL-SCH on the active downlink BWP of the first cell; wherein the active uplink BWP is the first uplink BWP, and the active downlink BWP is the first downlink BWP.

[0267] As a sub-embodiment of the above embodiment, the first uplink BWP is one of a plurality of uplink BWPs, and the plurality of uplink BWPs are configured by a network.

[0268] As a sub-embodiment of the above embodiment, the first downlink BWP is one of a plurality of downlink BWPs, and the plurality of downlink BWPs are configured by a network.

[0269] As an embodiment, the first uplink BWP is a common uplink BWP.

[0270] As an embodiment, the first uplink BWP is a UE-specific (dedicated) uplink BWP.

[0271] As an embodiment, the first uplink BWP is firstActiveUplinkBWP (first active uplink BWP).

[0272] As an embodiment, the first downlink BWP is a common downlink BWP.

[0273] As an embodiment, the first downlink BWP is a UE-specific (dedicated) downlink BWP.

[0274] As an embodiment, the first downlink BWP is firstActiveDownlinkBWP (first active downlink BWP).

[0275] As an embodiment, the first downlink BWP is defaultDownlinkBWP (default downlink BWP).

[0276] As an embodiment, the first downlink BWP is defaultDownlinkBWP-RedCap (reduced capability).

[0277] As an embodiment, the first downlink BWP is firstOutsideActiveTimeBWP (first outside active time BWP).

[0278] As an embodiment, the first downlink BWP is firstWithinActiveTimeBWP (first within active time BWP).

[0279] As an embodiment, executing the random access process includes: sending a random access preamble and monitoring a random access response.

[0280] As an embodiment, the random access preamble is sent on the first cell.

[0281] As an embodiment, the random access preamble is sent in an uplink active BWP of the first cell, or the random access preamble is sent in the first subband of the first cell.

[0282] As an embodiment, the random access response is monitored on the first cell.

[0283] As an embodiment, the random access response is monitored on an active downlink BWP of the first cell.

[0284] As a sub-embodiment of the above two embodiments, the first cell is a SpCell.

[0285] As an embodiment, the random access response is monitored on the SpCell of the CG to which the first cell belongs.

[0286] As an embodiment, the random access response is monitored on an active downlink BWP included in the SpCell of the CG to which the first cell belongs.

[0287] As a sub-embodiment of the above two embodiments, the first cell is not a SpCell.

[0288] The attached figure of Example 5 illustrates the case where the first cell is SpCell.

[0289] Example 6

[0290] Embodiment 6 illustrates a signal processing flow chart in the first node according to an embodiment of the present application, as shown in the attached Figure 6 shown.

[0291] Embodiment 6 is applicable to initiating a random access process when no PRACH opportunity is configured on the first uplink BWP and no PRACH opportunity is configured on the first subband.

[0292] In Example 6, in step S601, the active uplink BWP is switched from the first uplink BWP to the second uplink BWP; in step S602, it is determined whether the first cell is a SpCell, if so, step S603 is executed, if not, step S604 is executed; in step S603, the active downlink BWP is switched from the first downlink BWP to the second downlink BWP; in step S604, a random access preamble is sent in the first PRACH opportunity included in the second uplink BWP.

[0293] As an embodiment, when no PRACH opportunity is configured on the first uplink BWP and no PRACH opportunity is configured on the first subband, in order to perform the random access process, the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP.

[0294] As an embodiment, the active uplink BWP is switched from the first uplink BWP to the second uplink BWP, including: the first uplink BWP is deactivated, and the second uplink BWP is activated.

[0295] As an embodiment, a PRACH opportunity is configured on the second uplink BWP.

[0296] As an embodiment, the second uplink BWP is initialUplinkBWP.

[0297] As an embodiment, the second uplink BWP is initialUplinkBWP-RedCap, wherein the first node is a RedCap UE, and the first node is configured with the initialUplinkBWP-RedCap.

[0298] As an embodiment, the first uplink BWP and the second uplink BWP have different BWP identifiers.

[0299] As an embodiment, if the first cell is a special cell, the active downlink BWP of the first cell is switched from the first downlink BWP to the second downlink BWP.

[0300] As an embodiment, switching the active downlink BWP from the first downlink BWP to the second downlink BWP includes: the first downlink BWP is deactivated, and the second downlink BWP is activated.

[0301] As an embodiment, the first downlink BWP and the first uplink BWP have the same BWP identifier.

[0302] As an embodiment, receiving the DL-SCH on the first downlink BWP before initiating the random access procedure includes: before initiating the random access procedure, the active downlink BWP is the first downlink BWP.

[0303] As an embodiment, the second downlink BWP and the second uplink BWP have the same BWP identifier.

[0304] As a sub-embodiment of the above embodiment, for example, the BWP identifiers of the second uplink BWP and the second downlink BWP are both 0.

[0305] As an embodiment, the second uplink BWP is initialUplinkBWP, and the second downlink BWP is initialDownlinkBWP (initial downlink BWP).

[0306] As an embodiment, the second uplink BWP is initialUplinkBWP-RedCap, and the second downlink BWP is initialDownlinkBWP-RedCap; wherein, the first node is a RedCap UE, and the first node is configured with the initialUplinkBWP-RedCap and the initialDownlinkBWP-RedCap.

[0307] As an embodiment, the frequency domain resources included in the first downlink BWP and the frequency domain resources included in the second downlink BWP both belong to a frequency band configured for the first cell.

[0308] As an embodiment, the first downlink BWP and the second downlink BWP have no overlapping in the frequency domain.

[0309] As an embodiment, the first downlink BWP and the second downlink BWP partially overlap in the frequency domain.

[0310] As an embodiment, multiple downlink BWPs are configured on the first cell, and the multiple downlink BWPs include the first downlink BWP and the second downlink BWP.

[0311] As an embodiment, at any one time, only one downstream BWP among the multiple downstream BWPs is activated.

[0312] As an embodiment, the random access process is performed.

[0313] As an embodiment, when no PRACH opportunity is configured on the first uplink BWP and no PRACH opportunity is configured on the first subband, executing the random access process includes: sending a random access preamble in the first PRACH opportunity included in the second uplink BWP.

[0314] As an embodiment, the first PRACH opportunity occupies at least part of the frequency domain resources of the second uplink BWP in the frequency domain.

[0315] As an embodiment, the first PRACH opportunity occupies at least one uplink symbol in the time domain.

[0316] As an embodiment, the first PRACH opportunity is configured as one of multiple PRACH opportunities in the second uplink BWP.

[0317] As an embodiment, an uplink symbol is a symbol indicated by a TDD uplink and downlink configuration and used for uplink transmission, and the TDD uplink and downlink configuration is not for full-duplex configuration.

[0318] As an embodiment, the TDD uplink / downlink configuration determines a cell-specific uplink / downlink TDD configuration.

[0319] As an embodiment, the TDD uplink and downlink configuration indicates which symbols in a cycle are downlink symbols, which symbols are flexible symbols, and which symbols are uplink symbols.

[0320] As an embodiment, the TDD uplink and downlink configuration indicates the link direction of the symbol.

[0321] As an embodiment, the TDD uplink and downlink configuration is an RRC layer configuration.

[0322] As an embodiment, the TDD uplink and downlink configuration is a higher layer configuration.

[0323] As an embodiment, the TDD uplink and downlink configuration also indicates the adopted subcarrier spacing.

[0324] As an embodiment, the TDD uplink and downlink configuration includes part or all of the fields in the tdd-UL-DL-ConfigCommon (time division duplex uplink and downlink common configuration) IE.

[0325] As an embodiment, the TDD uplink and downlink configuration includes part or all of the fields in the tdd-UL-DL-ConfigDedicated (time division duplex uplink and downlink dedicated configuration) IE.

[0326] As an embodiment, one uplink symbol is used only for uplink.

[0327] As an embodiment, one uplink symbol is used only for uplink transmission.

[0328] As an embodiment, an uplink symbol is a symbol indicated by the TDD uplink and downlink configuration that is used for uplink and cannot be used for downlink transmission.

[0329] As an embodiment, an uplink symbol is a time domain symbol that is not configured with the first subband.

[0330] As an embodiment, if the first cell is a special cell, executing the random access process includes: monitoring a random access response on the second downlink BWP.

[0331] As an embodiment, monitoring the random access response on the second downlink BWP includes: monitoring PDCCH on the second downlink BWP; wherein the PDCCH is addressed to C (Cell)-RNTI (Radio Network Temporary Identifier), the random access procedure is used to request beam failure recovery, and the random access preamble is non-contention-free.

[0332] As an embodiment, monitoring the random access response on the second downlink BWP includes: monitoring PDCCH on the second downlink BWP, the PDCCH is identified by RA (Random Access)-RNTI, and the PDSCH scheduled by the PDCCH carries the random access response.

[0333] As a sub-embodiment of the above embodiment, the random access response is a RAR (Random Access Response).

[0334] As a sub-embodiment of the above embodiment, the random access response is MSGB (Message B).

[0335] As a sub-embodiment of the above-mentioned embodiment, the random access response includes a MAC subPDU (protocol data unit), and the MAC subPDU includes a backoff indication (BackoffIndicator), or an identifier of the random access preamble, or at least one of a timing advance command (TAC).

[0336] As an embodiment, if the first cell is not a special cell, executing the random access process includes: monitoring a random access response on an active downlink BWP included in the special cell; the first cell and the special cell belong to the same cell group (Cell Group, CG).

[0337] As an embodiment, when a random access process is initiated on the first cell, if a PRACH opportunity is not configured on the first uplink BWP and a PRACH opportunity is not configured on the first subband, the active uplink BWP of the first cell is first switched from the first uplink BWP to the second uplink BWP; if the first cell is a special cell, the active downlink BWP of the first cell is switched from the first downlink BWP to the second downlink BWP, and the second downlink BWP has the same BWP identifier as the second uplink BWP; and then the random access process is performed on the second uplink BWP and the second downlink BWP.

[0338] As an embodiment, when a random access process is initiated on the first cell, if a PRACH opportunity is not configured on the first uplink BWP and a PRACH opportunity is not configured on the first subband, the active uplink BWP of the first cell is first switched from the first uplink BWP to the second uplink BWP; if the first cell is not a SpCell, the random access process is performed on the active downlink BWP included in the second uplink BWP of the first cell and the SpCell of the CG to which the first cell belongs.

[0339] Example 7

[0340] Embodiment 7 illustrates a signal processing flow chart in the first node according to an embodiment of the present application, as shown in the attached Figure 7 shown.

[0341] Embodiment 7 is applicable to initiating a random access process when a PRACH opportunity is not configured on the first uplink BWP but a PRACH opportunity is configured on the first subband.

[0342] In Embodiment 7, in step S701, a random access preamble is sent in a second PRACH opportunity included in a first subband; in step S702, a random access response is monitored on an active downlink BWP of the first cell.

[0343] The attached figure of Example 7 illustrates the case where the first cell is a SpCell.

[0344] As an embodiment, when no PRACH opportunity is configured on the first uplink BWP but a PRACH opportunity is configured on the first subband, the active uplink BWP of the first cell is maintained as the first uplink BWP.

[0345] As a sub-embodiment of the above embodiment, the active uplink BWP of the first cell is not switched.

[0346] As an embodiment, the first subband is not indicated as having LBT (Listen Before Talk) failure.

[0347] As an embodiment, a PRACH opportunity configured on the first subband is configured in a full-duplex symbol in the time domain and is configured on the first subband in the frequency domain.

[0348] As a sub-embodiment of the above embodiment, the first information block includes a domain for configuring the PRACH opportunity, and the domain includes at least one of RACH-ConfigCommon, Rach-ConfigCommonTwoStepRA, RACH-ConfigDedicated, RACH-ConfigTwoTA, RACH-ConfigGeneric and RACH-ConfigGenericTwoStepRA.

[0349] As an embodiment, when a PRACH opportunity is not configured on the first uplink BWP but a PRACH opportunity is configured on the first subband, executing the random access process includes: sending a random access preamble in a second PRACH opportunity included in the first subband.

[0350] As an embodiment, the second PRACH opportunity occupies at least one full-duplex symbol in the time domain.

[0351] As an embodiment, the second PRACH opportunity occupies at least part of the frequency domain resources of the first subband in the frequency domain.

[0352] As an embodiment, a full-duplex symbol is a SBFD symbol.

[0353] As an embodiment, a full-duplex symbol is a time-domain symbol configured with SBFD.

[0354] As an embodiment, a full-duplex symbol is a time domain symbol in a SBFD time slot.

[0355] As an embodiment, a full-duplex symbol is a time domain symbol in which the SBFD subband is configured in the time domain.

[0356] As an embodiment, a full-duplex symbol is a time-domain symbol supporting full-duplex.

[0357] As an embodiment, a full-duplex symbol is a time-domain symbol to which SBFD is applicable.

[0358] As an embodiment, a full-duplex symbol is a time domain symbol capable of simultaneously performing uplink transmission and downlink transmission.

[0359] As an embodiment, a full-duplex symbol is a time domain symbol that can simultaneously perform uplink transmission and downlink transmission on the network side (or base station side).

[0360] As an embodiment, a full-duplex symbol is a time domain symbol that can simultaneously perform uplink transmission and downlink transmission on both the network side (or base station side) and the user equipment side.

[0361] As an embodiment, a full-duplex symbol is a symbol indicated as a downlink symbol by the TDD uplink and downlink configuration but can be used for uplink transmission.

[0362] As an embodiment, a full-duplex symbol is a time domain symbol configured with the first subband.

[0363] As an embodiment, an uplink symbol is a symbol indicated by the TDD uplink and downlink configuration but not indicated by the first information block.

[0364] As an embodiment, a full-duplex symbol is indicated as a downlink symbol by the TDD uplink and downlink configuration, and is simultaneously indicated by the first information block as a symbol for uplink transmission on the first subband.

[0365] As an embodiment, a downlink symbol is a symbol indicated by the TDD uplink and downlink configuration but not indicated by the first information block.

[0366] As an embodiment, one downlink symbol is used only for downlink.

[0367] As an embodiment, one downlink symbol is used only for downlink transmission.

[0368] As an embodiment, a downlink symbol is a symbol indicated by the TDD uplink and downlink configuration as being used for downlink and cannot be used for uplink transmission.

[0369] As an embodiment, an uplink symbol is a symbol other than a full-duplex symbol.

[0370] As an embodiment, an uplink symbol is a time domain symbol that is not configured with the first subband.

[0371] As an embodiment, the first information block indicates the at least one full-duplex symbol.

[0372] As an embodiment, the first information block indicating the at least one full-duplex symbol includes: the first information block explicitly or implicitly indicating the at least one full-duplex symbol.

[0373] As an embodiment, the first information block indicating the at least one full-duplex symbol includes: the first information block indicating only one full-duplex symbol.

[0374] As an embodiment, the first information block indicating the at least one full-duplex symbol includes: the first information block indicating a plurality of full-duplex symbols.

[0375] As an embodiment, the first information block indicates that the at least one full-duplex symbol includes: a position or index of the at least one full-duplex symbol in the time domain depends on the first information block.

[0376] As an embodiment, the first information block indicating the at least one full-duplex symbol includes: the first information block indicates that at least one symbol from a time window is the at least one full-duplex symbol.

[0377] As an embodiment, the first information block indicating the at least one full-duplex symbol includes: the symbol indicated (or provided) by the first information block is the at least one full-duplex symbol.

[0378] As an embodiment, the first information block indicating the at least one full-duplex symbol includes: the first information block indicates at least one downlink symbol indicated by the TDD uplink and downlink configuration as the at least one full-duplex symbol.

[0379] As an embodiment, the first information block indicating the at least one full-duplex symbol includes: at least one symbol indicated (or provided) by the first information block and indicated as a downlink by the TDD uplink and downlink configuration is the at least one full-duplex symbol.

[0380] As an embodiment, the first information block indicates that the at least one full-duplex symbol includes: at least one symbol indicated (or provided) by the first information block and indicated by the TDD uplink and downlink configuration as downlink or flexible is the at least one full-duplex symbol.

[0381] As an embodiment, the first information block indicates that the at least one full-duplex symbol includes: at least one symbol that overlaps with the symbol indicated (or provided) by the first information block in the time domain is the at least one full-duplex symbol.

[0382] As an embodiment, the first information block indicates that the at least one full-duplex symbol includes: at least one symbol indicated as a downlink by the TDD uplink and downlink configuration and fully or partially overlapping with the symbol indicated (or provided) by the first information block in the time domain is the at least one full-duplex symbol.

[0383] As an embodiment, the first information block indicates that the at least one full-duplex symbol includes: at least one symbol indicated by the TDD uplink and downlink configuration as downlink or flexible and which fully or partially overlaps with the symbol indicated (or provided) by the first information block in the time domain is the at least one full-duplex symbol.

[0384] As an embodiment, the first information block indicates that the at least one full-duplex symbol includes: the first information indicates at least one symbol, and any time domain symbol indicated by the TDD uplink and downlink configuration as a downlink that overlaps with the symbol indicated by the first information block is a full-duplex symbol.

[0385] As an embodiment, the first information block indicates the at least one full-duplex symbol including: the first information block indicates at least one full-duplex symbol from a periodic time window, the periodic time window includes multiple consecutive time domain symbols, and the time length and time slot format of the periodic time window are configured by the network.

[0386] As an embodiment, the first information block indicates the at least one full-duplex symbol including: the first information block indicates whether at least one symbol is applicable or associated or corresponds to or for the first subband from a time window, and the full-duplex symbol is a symbol that is applicable or associated or corresponds to or for the first subband.

[0387] As an embodiment, the first information block indicates that the at least one full-duplex symbol includes: the first information block includes a SLIV (start and length indicator value) corresponding to the at least one full-duplex symbol, and the starting full-duplex symbol and the number of consecutive symbols included in a periodic time window are used to generate the SLIV.

[0388] As an embodiment, when a PRACH opportunity is not configured on the first uplink BWP but a PRACH opportunity is configured on the first subband, executing the random access process includes: when the first cell is a SpCell, monitoring a random access response on an active downlink BWP of the first cell; and the first subband is located in the active downlink BWP of the first cell.

[0389] As an embodiment of the above embodiment, monitoring a random access response on an active downlink BWP of the first cell includes: monitoring a random access response on a downlink subband included in the active downlink BWP for each full-duplex symbol included in the at least one full-duplex symbol, and the downlink subband is not the first subband.

[0390] As an embodiment of the above embodiment, monitoring a random access response on an active downlink BWP of the first cell includes: monitoring a random access response on a frequency domain resource included in the active downlink BWP on a downlink symbol.

[0391] As an embodiment, when a PRACH opportunity is not configured on the first uplink BWP but a PRACH opportunity is configured on the first subband, executing the random access process includes: when the first cell is not a SpCell, monitoring a random access response on an active downlink BWP included in the SpCell of the CG to which the first cell belongs; and the first subband is located in the active downlink BWP of the first cell.

[0392] As an embodiment, the random access response may refer to the description in Embodiment 6, which will not be repeated here.

[0393] As an embodiment, the active downlink BWP of the first cell is the first downlink BWP.

[0394] As an embodiment, the first subband is configured in the active downlink BWP of the first cell.

[0395] As an embodiment, the first subband belongs to the active downlink BWP of the first cell.

[0396] As an embodiment, when a random access process is initiated on the first cell, if a PRACH opportunity is not configured on the first uplink BWP, but a PRACH opportunity is configured on the first subband, and the first cell is a SpCell, the random access process is performed on the first subband and the active downlink BWP of the first cell.

[0397] As an embodiment, when a random access process is initiated on the first cell, if a PRACH opportunity is not configured on the first uplink BWP, but a PRACH opportunity is configured on the first subband, and the first cell is not a SpCell, the random access process is performed on an active downlink BWP included in the first subband and the SpCell of the CG to which the first cell belongs.

[0398] Example 8

[0399] Embodiment 8 illustrates a schematic diagram of an active uplink BWP and an active downlink BWP according to an embodiment of the present application, as shown in the attached figure. Figure 8 described.

[0400] As an embodiment, a serving cell is configured with one or more BWPs, and the active BWP of the serving cell is indicated by RRC or PDCCH; the active BWP includes an active uplink BWP and / or an active downlink BWP.

[0401] As a sub-embodiment of the above embodiment, the multiple BWPs are located within the frequency band of the first cell.

[0402] As an embodiment, for unpaired spectrum, one downlink BWP and one uplink BWP are paired, and BWP switching is common for UL and DL.

[0403] As an embodiment, the unpaired spectrum is applicable to the TDD mode.

[0404] As an embodiment, in TDD mode, BWP switching is at the BWP pair granularity, ie, the active BWP pair is switched from one BWP pair to another BWP pair.

[0405] As an embodiment, in TDD mode, a pair of BWPs, including an uplink BWP and a downlink BWP, have the same BWP identifier.

[0406] As an embodiment, in TDD mode, a pair of BWPs includes an uplink BWP and a downlink BWP having the same center frequency.

[0407] As an embodiment, in FDD mode, the active uplink BWP and the active downlink BWP may have different BWP identifiers.

[0408] As an embodiment, in FDD mode, active uplink BWP switching and active downlink BWP switching are independent, that is, switching of active uplink BWP does not necessarily trigger switching of active downlink BWP, and vice versa.

[0409] As an embodiment, in FDD mode, the active uplink BWP and the active downlink BWP may have different center frequencies.

[0410] As an embodiment, the first cell operates in TDD mode.

[0411] The accompanying drawings of Embodiment 8 illustrate that the first cell operates in TDD mode, including an active uplink BWP and an active downlink BWP pair.

[0412] As an embodiment, the BWP bandwidth in a cell can be flexibly configured to effectively support UEs with different bandwidth processing capabilities, and can also effectively adapt to UE business requirements. When the business volume is not large, a smaller BWP bandwidth can be configured to achieve power saving effects.

[0413] Example 9

[0414] Embodiment 9 illustrates a schematic diagram of a first sub-band according to an embodiment of the present application, as shown in the attached figure. Fig. 9 Attached Fig. 9 In the figure, the rectangular box filled with diagonal lines represents the first sub-band, and the rectangular box filled with diagonal grids represents the guard band.

[0415] As an embodiment, the first information block configures the first subband as full-duplex for the first cell, and the first subband is located in an active downlink BWP of the first cell.

[0416] As an embodiment, the active downlink BWP of the first cell is the first downlink BWP.

[0417] As an embodiment, the first uplink BWP and the first downlink BWP have the same center frequency; wherein the first cell operates in TDD mode.

[0418] As an embodiment, the first subband is configured for uplink transmission.

[0419] As an embodiment, frequency domain resources other than the first subband in the active downlink BWP of the first cell are not used for uplink transmission.

[0420] As an embodiment, the frequency domain resources other than the first sub-band in the active downlink BWP of the first cell are used for a downlink sub-band and a guard band, and the guard band is located between the first sub-band and the downlink sub-band; the downlink sub-band is configured for downlink transmission, and the guard band is not used for wireless transmission.

[0421] As a sub-embodiment of the above embodiment, the first sub-band and the downlink sub-band are configured with the same sub-carrier spacing.

[0422] As a sub-embodiment of the above embodiment, the first sub-band and the downlink sub-band are configured with different sub-carrier spacings.

[0423] As a sub-embodiment of the above embodiment, the first sub-band and the downlink sub-band are configured with different transmission directions.

[0424] As a sub-embodiment of the above embodiment, the transmission direction on the first sub-band is uplink, and the transmission direction on the downlink sub-band is downlink.

[0425] As an embodiment, the center frequency of the first sub-band is the same as the center frequency of the active downlink BWP of the first cell.

[0426] As an embodiment, the center frequency of the first sub-band is different from the center frequency of the active downlink BWP of the first cell.

[0427] As an embodiment, the bandwidth of the first subband is smaller than the bandwidth of the active downlink BWP of the first cell.

[0428] In case A of embodiment 9, the first sub-band is located in the middle of the active downlink BWP of the first cell, and the center frequency of the first sub-band is the same as the center frequency of the active downlink BWP of the first cell.

[0429] In case B of embodiment 9, the first subband is located above the active downlink BWP of the first cell, and the center frequency of the first subband is different from the center frequency of the active downlink BWP of the first cell.

[0430] Example 10

[0431] Embodiment 10 illustrates a schematic diagram of an active uplink BWP, an active downlink BWP, a first subband and a full-duplex symbol according to an embodiment of the present application, as shown in the attached figure. Fig.10 Attached Fig.10 Applicable to TDD mode, where a rectangular box filled with U represents an uplink symbol, and a symbol filled with D represents a downlink symbol; a rectangular box filled with slashes represents time-frequency resources for full-duplex; and a rectangular box filled with diagonal grids represents time-frequency resources for protection.

[0432] As an embodiment, before initiating the random access process, the active uplink BWP is the first uplink BWP, and the active downlink BWP is the first downlink BWP.

[0433] As an embodiment, in a time domain symbol, there are overlapping frequency domain resources between the first subband and the first uplink BWP.

[0434] As an embodiment, in a time domain symbol, there are no overlapping frequency domain resources between the first subband and the first uplink BWP.

[0435] As an embodiment, a boundary of a resource block included in the first subband is aligned with a boundary of a resource block in the first uplink BWP.

[0436] The above method can avoid uplink resource fragmentation and improve coverage.

[0437] As an embodiment, the boundary of the resource blocks included in the first subband is aligned with the boundary of the resource blocks in the active downlink BWP.

[0438] The above method can avoid downlink resource fragmentation and ensure scheduling flexibility.

[0439] As an embodiment, in a full-duplex symbol, uplink transmission is performed on the first sub-band, and downlink transmission is performed on a downlink sub-band outside the first sub-band.

[0440] As a sub-embodiment of the above embodiment, the full-duplex symbol is for the base station, that is, the base station can perform uplink transmission and downlink transmission simultaneously in a full-duplex symbol; while the UE can only perform uplink transmission or downlink transmission in a full-duplex symbol.

[0441] As a sub-embodiment of the above embodiment, the full-duplex symbol is for both the base station and the UE, that is, the base station and the UE can perform uplink transmission and downlink transmission simultaneously on a full-duplex symbol; the UE's support for the full-duplex symbol depends on the UE capability.

[0442] As an embodiment, in a full-duplex symbol, a downlink BWP includes an uplink subband for uplink transmission, a downlink subband and a guard band for downlink transmission. Unless otherwise specified, monitoring or reception in the downlink BWP is monitoring or reception in the downlink subband included in the downlink BWP; wherein the uplink subband is configured for full-duplex in the downlink BWP.

[0443] As an embodiment, in a full-duplex symbol, an uplink BWP includes a downlink subband for downlink transmission, an uplink subband for uplink transmission and a guard band, and unless otherwise specified, the transmission in the uplink BWP is the transmission in the uplink subband included in the uplink BWP; wherein the downlink subband is configured for full-duplex in the uplink BWP.

[0444] Embodiment 11

[0445] Embodiment 11 illustrates a structural block diagram of a processing device in a first node according to an embodiment of the present application, as shown in the attached figure. Fig.11 As shown in the attached Fig.11 In the embodiment, the first node processing device 1100 includes a first receiver 1101 and a first transceiver 1102; the first node 1100 is a UE.

[0446] In embodiment 11, a first receiver 1101 receives a first information block, wherein the first information block is a first subband configured for full-duplex for a first cell, and the first subband includes at least one resource block; a first transceiver 1102 sends UL-SCH on a first uplink BWP; a random access process is initiated on the first cell; wherein no PRACH opportunity is configured on the first uplink BWP; whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP depends on whether a PRACH opportunity is configured on the first subband; and both the first uplink BWP and the second uplink BWP are configured on the first cell.

[0447] As an embodiment, the first transceiver 1102 does not configure a PRACH opportunity on the first subband, and switches the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP.

[0448] As an embodiment, the first transceiver 1102, when no PRACH opportunity is configured on the first subband, switches the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP; the first transceiver 1102, when the first cell is a special cell, switches the active downlink BWP of the first cell from the first downlink BWP to the second downlink BWP; wherein, DL-SCH is received on the first downlink BWP before initiating the random access process; the first downlink BWP and the second downlink BWP are both configured on the first cell, and the second downlink BWP and the second uplink BWP have the same BWP identifier.

[0449] As an embodiment, the first transceiver 1102, when no PRACH opportunity is configured on the first subband, switches the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP; the first transceiver 1102, when the first cell is a special cell, switches the active downlink BWP of the first cell from the first downlink BWP to the second downlink BWP; wherein, before initiating the random access process, DL-SCH is received on the first downlink BWP; the first downlink BWP and the second downlink BWP are both configured on the first cell, and the second downlink BWP has the same BWP identifier as the second uplink BWP; the first transceiver 1102 executes the random access process, including: sending a random access preamble in a first PRACH opportunity included in the second uplink BWP, the first PRACH opportunity occupying at least one uplink symbol in the time domain; and monitoring a random access response on the second downlink BWP.

[0450] As an embodiment, a PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is maintained as the first uplink BWP.

[0451] As an embodiment, the first transceiver 1102 configures a PRACH opportunity on the first subband, maintains the active uplink BWP of the first cell as the first uplink BWP; performs the random access process, including: sending a random access preamble in a second PRACH opportunity included in the first subband, the second PRACH opportunity occupies at least one full-duplex symbol in the time domain; wherein the first information block indicates the at least one full-duplex symbol.

[0452] As an embodiment, the first transceiver 1102 configures a PRACH opportunity on the first subband, and keeps the active uplink BWP of the first cell as the first uplink BWP; executing the random access process includes: monitoring a random access response on the active downlink BWP of the first cell; the first subband is located in the active downlink BWP of the first cell, and the first cell is a SpCell.

[0453] As an embodiment, the first receiver 1101 includes the attached Figure 4 The receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 and controller / processor 459.

[0454] As an embodiment, the first receiver 1101 includes the attached Figure 4 At least one of the receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 or controller / processor 459.

[0455] As an embodiment, the first transceiver 1102 includes Figure 4 The receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 and controller / processor 459.

[0456] As an embodiment, the first transceiver 1102 includes Figure 4 At least one of the receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 or controller / processor 459.

[0457] As an embodiment, the first transceiver 1102 includes Figure 4 The receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 and controller / processor 459.

[0458] As an embodiment, the first transceiver 1102 includes Figure 4 At least one of the receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 or controller / processor 459.

[0459] Example 12

[0460] Embodiment 12 illustrates a structural block diagram of a processing device in a second node according to an embodiment of the present application, as shown in the attached figure. Fig.12 As shown in the attached Fig.12 In the embodiment, the second node processing device 1200 includes a second transmitter 1201, a second transceiver 1202, a third transceiver 1203 and a fourth transceiver 1204; the second node 1200 is a base station or a gNB-DU.

[0461] In embodiment 12, the second transmitter 1201 sends a first information block, wherein the first information block is a first subband configured for full-duplex for the first cell, and the first subband includes at least one resource block; wherein UL-SCH is sent on a first uplink BWP; a random access procedure is initiated on the first cell; a PRACH opportunity is not configured on the first uplink BWP; whether the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP depends on whether a PRACH opportunity is configured on the first subband; and both the first uplink BWP and the second uplink BWP are configured on the first cell.

[0462] As an embodiment, no PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP.

[0463] As an embodiment, no PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP; the first cell is a special cell, and the active downlink BWP of the first cell is switched from the first downlink BWP to the second downlink BWP; wherein, DL-SCH is received on the first downlink BWP before initiating the random access process; the first downlink BWP and the second downlink BWP are both configured on the first cell, and the second downlink BWP and the second uplink BWP have the same BWP identifier.

[0464] As an embodiment, no PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP; the first cell is a special cell, and the active downlink BWP of the first cell is switched from the first downlink BWP to the second downlink BWP; wherein, DL-SCH is received on the first downlink BWP before initiating the random access process; the first downlink BWP and the second downlink BWP are both configured on the first cell, and the second downlink BWP has the same BWP identifier as the second uplink BWP; the second transceiver 1202 executes the random access process, including: receiving a random access preamble in a first PRACH opportunity included in the second uplink BWP, the first PRACH opportunity occupying at least one uplink symbol in the time domain; and sending a random access response on the second downlink BWP.

[0465] As an embodiment, a PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is maintained as the first uplink BWP.

[0466] As an embodiment, a PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is maintained as the first uplink BWP; the third transceiver 1203 executes the random access process, including: receiving a random access preamble in a second PRACH opportunity included in the first subband, the second PRACH opportunity occupies at least one full-duplex symbol in the time domain; wherein the first information block indicates the at least one full-duplex symbol.

[0467] As an embodiment, a PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is maintained as the first uplink BWP; the third transceiver 1203 executes the random access process, including: receiving a random access preamble in a second PRACH opportunity included in the first subband, the second PRACH opportunity occupies at least one full-duplex symbol in the time domain; wherein the first information block indicates the at least one full-duplex symbol; monitoring a random access response on the active downlink BWP of the first cell; the first subband is located in the active downlink BWP of the first cell, and the first cell is a SpCell.

[0468] As an embodiment, a PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is maintained as the first uplink BWP; the fourth transceiver 1204 executes the random access process including: monitoring a random access response on the active downlink BWP of the first cell; the first subband is located in the active downlink BWP of the first cell, and the first cell is a SpCell.

[0469] As an embodiment, the second transceiver 1202, the third transceiver 1203 and the fourth transceiver 1204 are the same transceiver.

[0470] As an embodiment, the second transmitter 1201 includes the attached Figure 4 The transmitter 418 (including antenna 420), transmit processor 416, multi-antenna transmit processor 471 and controller / processor 475.

[0471] As an embodiment, the second transmitter 1201 includes the attached Figure 4 At least one of the transmitter 418 (including antenna 420), the transmit processor 416, the multi-antenna transmit processor 471 or the controller / processor 475.

[0472] As an embodiment, the second transceiver 1202 includes Figure 4 The receiver 418 (including antenna 420), receive processor 470, multi-antenna receive processor 472 and controller / processor 475.

[0473] As an embodiment, the second transceiver 1202 includes Figure 4 At least one of the receiver 418 (including the antenna 420), the receive processor 470, the multi-antenna receive processor 472 and the controller / processor 475.

[0474] As an embodiment, the second transceiver 1202 includes Figure 4 The transmitter 418 (including antenna 420), transmit processor 416, multi-antenna transmit processor 471 and controller / processor 475.

[0475] As an embodiment, the second transceiver 1202 includes Figure 4 At least one of the transmitter 418 (including antenna 420), the transmit processor 416, the multi-antenna transmit processor 471 or the controller / processor 475.

[0476] As an embodiment, the third transceiver 1203 includes the attached Figure 4The receiver 418 (including antenna 420), receive processor 470, multi-antenna receive processor 472 and controller / processor 475.

[0477] As an embodiment, the third transceiver 1203 includes the attached Figure 4 At least one of the receiver 418 (including the antenna 420), the receive processor 470, the multi-antenna receive processor 472 and the controller / processor 475.

[0478] As an embodiment, the third transceiver 1203 includes the attached Figure 4 The transmitter 418 (including antenna 420), transmit processor 416, multi-antenna transmit processor 471 and controller / processor 475.

[0479] As an embodiment, the third transceiver 1203 includes the attached Figure 4 At least one of the transmitter 418 (including antenna 420), the transmit processor 416, the multi-antenna transmit processor 471 or the controller / processor 475.

[0480] As an embodiment, the fourth transceiver 1203 includes the attached Figure 4 The receiver 418 (including antenna 420), receive processor 470, multi-antenna receive processor 472 and controller / processor 475.

[0481] As an embodiment, the fourth transceiver 1203 includes the attached Figure 4 At least one of the receiver 418 (including the antenna 420), the receive processor 470, the multi-antenna receive processor 472 and the controller / processor 475.

[0482] As an embodiment, the fourth transceiver 1203 includes the attached Figure 4 The transmitter 418 (including antenna 420), transmit processor 416, multi-antenna transmit processor 471 and controller / processor 475.

[0483] As an embodiment, the fourth transceiver 1203 includes the attached Figure 4 At least one of the transmitter 418 (including antenna 420), the transmit processor 416, the multi-antenna transmit processor 471 or the controller / processor 475.

[0484] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The first type of communication node or UE or terminal in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC (enhanced Machine Type Communication, enhanced machine type communication) equipment, NB-IoT equipment, vehicle-mounted communication equipment, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication equipment. The second type of communication node or base station or network side equipment in the present application includes but is not limited to macrocellular base stations, microcellular base stations, home base stations, relay base stations, eNB, gNB, transmission and reception nodes TRP (Transmission and Reception Point, transmission and reception point), relay satellites, satellite base stations, aerial base stations and other wireless communication equipment.

[0485] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node used for wireless communication, characterized in that: include: A first receiver receives a first information block, where the first information block is a first subband configured for full duplex in a first cell, where the first subband includes at least one resource block; A first transceiver sends a UL-SCH on a first uplink BWP; and initiates a random access process on the first cell; Wherein, no PRACH opportunity is configured on the first uplink BWP; whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP depends on whether a PRACH opportunity is configured on the first subband; The first uplink BWP and the second uplink BWP are both configured on the first cell.

2. The first node according to claim 1, characterized in that: include: The first transceiver, without configuring a PRACH opportunity on the first subband, switches the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP.

3. The first node according to claim 1 or 2, characterized in that: include: The first transceiver, the first cell being a special cell, switches the active downlink BWP of the first cell from the first downlink BWP to the second downlink BWP; Wherein, before initiating the random access procedure, receiving the DL-SCH on the first downlink BWP; The first downlink BWP and the second downlink BWP are both configured on the first cell, and the second downlink BWP and the second uplink BWP have the same BWP identifier.

4. The first node according to claim 3, characterized in that: include: The first transceiver performs the random access process, including: sending a random access preamble in a first PRACH opportunity included in the second uplink BWP, the first PRACH opportunity occupying at least one uplink symbol in the time domain; The second downlink BWP is monitored for a random access response.

5. The first node according to claim 1, characterized in that: A PRACH opportunity is configured on the first subband, and the active uplink BWP of the first cell is maintained as the first uplink BWP.

6. The first node according to claim 1 or 5, characterized in that: include: The first transceiver performs the random access process, including: sending a random access preamble in a second PRACH opportunity included in the first subband, the second PRACH opportunity occupying at least one full-duplex symbol in the time domain; The first information block indicates the at least one full-duplex symbol.

7. The first node according to claim 5 or 6, characterized in that: Executing the random access process includes: monitoring a random access response on an active downlink BWP of the first cell; the first subband is located in the active downlink BWP of the first cell, and the first cell is a SpCell.

8. A second node used for wireless communication, characterized in that: include: A second transmitter sends a first information block, where the first information block is a first subband configured for full duplex in a first cell, and the first subband includes at least one resource block; Among them, UL-SCH is sent on the first uplink BWP; a random access procedure is initiated on the first cell; a PRACH opportunity is not configured on the first uplink BWP; whether the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP depends on whether a PRACH opportunity is configured on the first subband; The first uplink BWP and the second uplink BWP are both configured on the first cell.

9. A method in a first node for wireless communication, characterized in that: include: receiving a first information block, where the first information block is a first subband configured as full-duplex for a first cell, where the first subband includes at least one resource block; Sending UL-SCH on the first uplink BWP; Initiating a random access procedure on the first cell; Wherein, no PRACH opportunity is configured on the first uplink BWP; whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP depends on whether a PRACH opportunity is configured on the first subband; The first uplink BWP and the second uplink BWP are both configured on the first cell.

10. A method in a second node for wireless communication, characterized in that: include: Sending a first information block, where the first information block is a first subband configured for full-duplex in a first cell, where the first subband includes at least one resource block; Wherein, UL-SCH is sent on the first uplink BWP; a random access process is initiated on the first cell; No PRACH opportunity is configured on the first uplink BWP; whether the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP depends on whether a PRACH opportunity is configured on the first subband; both the first uplink BWP and the second uplink BWP are configured on the first cell.

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