Method and apparatus used for wireless communication

Abstract

The present application discloses a method and apparatus used for wireless communication. A first node receives first signaling, the first signaling configuring a first subband for a SpCell. For an intended uplink transmission, a first channel access procedure is executed, the intended uplink transmission being in the first subband of the SpCell. A first operation is executed as a response to a failure to access a channel prior to the intended uplink transmission on the basis of the first channel access procedure. The first operation comprises not transmitting the intended uplink transmission. Whether the first operation comprises a first sub-operation depends on the first signaling. When the first signaling is BWP-UplinkCommon, the first operation comprises the 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 indicates a consistent LBT failure to an RRC layer. According to the present application, subband operations can be differentiated.

Description

A method and apparatus for wireless communication

[0001] This application claims priority from the Chinese Patent Application No. 202410446700.7 filed on April 13, 2024, and entitled "A method and apparatus for wireless communication", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to a method and apparatus in a wireless communication system, and in particular, to a transmission method and apparatus supporting flexible transmission direction configuration in wireless communication. BACKGROUND

[0003] The application scenarios of future wireless communication systems are increasingly diversified, and different application scenarios put forward different performance requirements for the system. In order to meet the different performance requirements of various application scenarios, it is decided at the 3GPP (3rd Generation Partnership Project) RAN (Radio Access Network) #72 plenary meeting to study the new radio technology (NR, New Radio) (or 5G), and the new radio technology (NR, New Radio) WI (Work Item) is passed at the 3GPP RAN #75 plenary meeting, and the standardization work of NR is started.

[0004] Full duplex (Full Duplex Division) can significantly improve spectrum efficiency and has become a research hotspot, among which non-overlapping SBFD (SubBand Full Duplex) has attracted the research interest of the industry and is one of the potential technologies supported by 6G. SUMMARY

[0005] In the existing NR system, the spectrum resources are statically divided into FDD (Frequency Division Duplex) spectrum and TDD (Time Division Duplex) spectrum. For TDD spectrum, the base station and the UE (User Device) both work in half duplex (Half Duplex) mode. This half duplex mode can effectively avoid self-interference and can alleviate cross-link interference, but also brings the decline of resource utilization and the increase of transmission delay. In view of these problems, supporting SBFD on TDD spectrum is an effective solution. The introduction of SBFD needs further research on the impact on UE behavior.

[0006] To solve the problem of BWP switching caused by random access procedure in a system supporting SBFD, the present application discloses a solution. In the case of no conflict, the embodiments and features in the embodiments can be arbitrarily combined with each other. Further, although the original intention of the present application is to solve the problem in the SBFD scenario, the present application is also applicable to other scenarios facing similar problems (for example, scenarios where the link direction changes, or other scenarios supporting multi-level configuration of transmission direction, or scenarios with more capable base stations or user equipment, such as scenarios supporting same-frequency full-duplex, or for different application scenarios, such as eMBB, URLLC, non-terrestrial network, integrated sensing network, intelligent metasurface, terahertz network), and similar technical effects can be achieved. In addition, the use of a unified solution in different scenarios can help reduce hardware complexity or improve compatibility. In the case of no conflict, the embodiments in any node and the features in the embodiments can be applied to any other node, and vice versa. In particular, the explanation of the terminology (Terminology), nouns, functions, and variables in the present application (if not specially specified) can refer to the definitions in the specification protocols TS36 series, TS38 series, and TS37 series of 3GPP.

[0007] The present application discloses a method used in a first node for wireless communication, characterized in that it comprises:

[0008] receiving a first information block, the first information block configuring a first sub-band for full-duplex for a first cell, the first sub-band comprising at least one resource block;

[0009] sending UL-SCH on a first uplink BWP;

[0010] initiating a random access procedure on the first cell;

[0011] 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 a second uplink BWP depends on whether a PRACH opportunity is configured on the first sub-band; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0012] As an embodiment, the first sub-band is used for uplink and downlink transmission.

[0013] As an embodiment, the first uplink BWP (BandWidth Part) includes resource blocks and the first sub-band includes resource blocks, which constitute usable uplink resource blocks (resource block, RB).

[0014] As an embodiment, the method can flexibly adjust the uplink bandwidth to adapt to the changing service demand.

[0015] As an embodiment, the first sub-band is common to the cell.

[0016] As an embodiment, the method of adjusting the uplink bandwidth at the base station granularity can optimize the system performance.

[0017] As an embodiment, the first sub-band is specific to the first node.

[0018] As an embodiment, the method of adjusting the uplink bandwidth at the UE granularity can optimize the service support for the UE.

[0019] As an embodiment, the method of determining whether to switch the active uplink BWP of the first cell from the first uplink BWP to a second uplink BWP according to whether a PRACH (Physical Random Access Channel) occasion is configured on the first sub-band can reduce the operation of switching the BWP of the UE while ensuring the performance of the random access procedure.

[0020] As an embodiment, the method has backward compatibility and can simplify the system design.

[0021] According to an aspect of the present application, the features of the method include:

[0022] The active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP when no PRACH occasion is configured on the first sub-band.

[0023] As an embodiment, the method has backward compatibility and can simplify the system design.

[0024] According to an aspect of the present application, the features of the method include:

[0025] The first cell is a special cell, and the active downlink BWP of the first cell is switched from a first downlink BWP to a second downlink BWP.

[0026] Wherein, the DL-SCH is received on the first downlink BWP before the random access procedure is initiated; 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.

[0027] According to an aspect of the present application, the features of the method include:

[0028] performing the random access procedure comprises transmitting a random access preamble in a first PRACH occasion comprised in the second uplink BWP, the first PRACH occasion occupying at least one uplink symbol in time domain; and monitoring a random access response on the second downlink BWP.

[0029] According to an aspect of the present application, the features of the above method comprise:

[0030] The first cell keeps the active uplink BWP as the first uplink BWP when the PRACH occasion is configured on the first sub-band.

[0031] As an embodiment, the random access procedure does not trigger the switching of the active downlink BWP of the first cell when the active uplink BWP of the first cell is not switched.

[0032] As an embodiment, configuring the PRACH occasion on the first sub-band can increase random access resources.

[0033] As an embodiment, the above method reduces the number of BWP switching.

[0034] According to an aspect of the present application, the features of the above method comprise:

[0035] performing the random access procedure comprises transmitting a random access preamble in a second PRACH occasion comprised in the first sub-band, the second PRACH occasion occupying at least one full-duplex symbol in time domain;

[0036] The first information block indicates the at least one full-duplex symbol.

[0037] As an embodiment, the above method performs the random access procedure using the PRACH occasion configured in the first sub-band, which can reduce the probability of random access collision and reduce the random access delay.

[0038] According to an aspect of the present application, the features of the above method comprise:

[0039] performing the random access procedure comprises monitoring a random access response on the active downlink BWP of the first cell; the first sub-band is located in the active downlink BWP of the first cell, and the first cell is a SpCell.

[0040] The present application discloses a method used in a second node for wireless communication, characterized in that, comprising:

[0041] transmitting a first information block, the first information block configuring a first sub-band for a first cell as full-duplex, the first sub-band comprising at least one resource block;

[0042] wherein the UL-SCH is transmitted on a first uplink BWP; the random access procedure is initiated on the first cell; no PRACH occasion is configured on the first uplink BWP; whether the active uplink BWP of the first cell is switched from the first uplink BWP to a second uplink BWP depends on whether a PRACH occasion is configured on the first sub-band; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0043] According to an aspect of the present application, the above method features include:

[0044] No PRACH occasion is configured on the first sub-band, the active uplink BWP of the first cell is switched from the first uplink BWP to the second uplink BWP.

[0045] According to an aspect of the present application, the above method features include:

[0046] The first cell is a special cell, the active downlink BWP of the first cell is switched from a first downlink BWP to a second downlink BWP;

[0047] wherein the DL-SCH is received on the first downlink BWP before the random access procedure is initiated; the first downlink BWP and the second downlink BWP are both configured on the first cell, the second downlink BWP has a same BWP identity as the second uplink BWP.

[0048] According to an aspect of the present application, the above method features include:

[0049] Performing the random access procedure includes: receiving a random access preamble in a first PRACH occasion included in the second uplink BWP, the first PRACH occasion occupies at least one uplink symbol in time domain; transmitting a random access response on the second downlink BWP.

[0050] According to an aspect of the present application, the above method features include:

[0051] A PRACH occasion is configured on the first sub-band, the active uplink BWP of the first cell is maintained as the first uplink BWP.

[0052] According to an aspect of the present application, the above method features include:

[0053] Performing the random access procedure includes: receiving a random access preamble in a second PRACH occasion included in the first sub-band, the second PRACH occasion occupies at least one full-duplex symbol in time domain;

[0054] The first information block indicates the at least one full-duplex symbol.

[0055] According to an aspect of the present application, the features of the above method comprise:

[0056] The performing the random access procedure comprises: monitoring a random access response on an active downlink BWP of the first cell; the first sub-band is located in the active downlink BWP of the first cell, and the first cell is a SpCell.

[0057] The present application discloses a first node used for wireless communication, comprising:

[0058] The first receiver receives a first information block, the first information block configuring a first sub-band for full-duplex for a first cell, the first sub-band comprising at least one resource block;

[0059] The first transceiver transmits an UL-SCH on a first uplink BWP; and initiates a random access procedure on the first cell.

[0060] The first uplink BWP and the second uplink BWP are both configured on the first cell.

[0061] The present application discloses a second node used for wireless communication, comprising:

[0062] The second transmitter transmits a first information block, the first information block configuring a first sub-band for full-duplex for a first cell, the first sub-band comprising at least one resource block;

[0063] The first uplink BWP and the second uplink BWP are both configured on the first cell. BRIEF DESCRIPTION OF DRAWINGS

[0064] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments thereof, read in conjunction with the accompanying drawings:

[0065] FIG. 1 illustrates a signal processing flowchart in a first node according to an embodiment of the present application;

[0066] Figure 2 illustrates a schematic diagram of a network architecture, according to an embodiment of the application;

[0067] Figure 3 illustrates a schematic diagram of a radio protocol architecture for the user and control planes, according to an embodiment of the application;

[0068] Figure 4 illustrates a schematic diagram of hardware modules of a communication device, according to an embodiment of the application;

[0069] Figure 5 illustrates a flow diagram of a wireless signal transmission, according to an embodiment of the application;

[0070] Figure 6 illustrates a flow diagram of signal processing in a first node, according to an embodiment of the application;

[0071] Figure 7 illustrates a flow diagram of signal processing in a first node, according to an embodiment of the application;

[0072] Figure 8 illustrates a schematic diagram of an active uplink BWP and an active downlink BWP, according to an embodiment of the application;

[0073] Figure 9 illustrates a schematic diagram of a first sub-band, according to an embodiment of the application;

[0074] Figure 10 illustrates a schematic diagram of an active uplink BWP, an active downlink BWP, a first sub-band and a full-duplex symbol, according to an embodiment of the application;

[0075] Figure 11 illustrates a block diagram of a processing apparatus in a first node, according to an embodiment of the application;

[0076] Figure 12 illustrates a block diagram of a processing apparatus in a second node, according to an embodiment of the application. DETAILED DESCRIPTION

[0077] The technical solutions of the present application will be further described below in conjunction with the accompanying drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0078] Embodiment 1

[0079] Embodiment 1 illustrates a flow diagram of signal processing in a first node, according to an embodiment of the application, as shown in Figure 1.

[0080] In embodiment 1, the first node 100 receives a first information block in step 101, the first information block configures a first subband for full duplex for a first cell; transmits UL-SCH on a first uplink BWP in step 102; initiates a random access procedure on the first cell in step 103; wherein the first subband comprises 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 a 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.

[0081] As an embodiment, a first information block is received, the first information block configures a first subband for full duplex for a first cell.

[0082] As an embodiment, the first information block comprises a higher layer information or a higher layer parameter configuration.

[0083] As an embodiment, the first information block comprises one or more IE (Information element) included in a RRC (Radio Resource Control) layer signaling, or the first information block comprises one or more fields in an IE included in a RRC layer signaling.

[0084] As an embodiment, the first information block comprises part or all fields included in a SIB (System Information Block).

[0085] As an embodiment, the first information block is Cell Common or the first information block is Cell specific.

[0086] As an embodiment, the first information block is Group Common.

[0087] As an embodiment, the first information block is UE specific or UE dedicated.

[0088] As an embodiment, the first information block is per subband.

[0089] As an embodiment, the first information block is per carrier.

[0090] As one embodiment, the first information block is configured for a BWP.

[0091] As one embodiment, the first information block includes some or all of the fields in an RRCReconfiguration IE.

[0092] As one embodiment, the first information block includes some or all of the fields in an RRCResume IE.

[0093] As one embodiment, the first information block includes some or all of the fields in an SBFDConfigDedicated IE.

[0094] As one embodiment, the first information block includes some or all of the fields in an SBFDConfigCommon IE.

[0095] As one embodiment, the first information block includes some or all of the fields in an SBFDConfig IE.

[0096] As one embodiment, the first information block includes an SBFD-UplinkConfig.

[0097] As one embodiment, the first information block includes some or all of the fields in a BWP-DownlinkDedicated IE.

[0098] As one embodiment, the first information block includes some or all of the fields in a BWP-DownlinkCommon IE.

[0099] As one embodiment, the first information block includes some or all of the fields in a ServingCellConfig IE.

[0100] As one embodiment, the first information block includes some or all of the fields in a ServingCellConfigCommon IE.

[0101] As one embodiment, the first information block includes some or all of the fields in a ServingCellConfigCommonSIB IE.

[0102] As one embodiment, the first information block includes some or all of the fields in a CellGroupConfig IE.

[0103] As one embodiment, the first information block includes some or all fields in a SpCellConfig (Special Cell Configuration) IE.

[0104] As one embodiment, the first information block includes some or all fields in a SCellConfig (Secondary Cell Configuration) IE.

[0105] As one embodiment, the first information block includes some or all fields in a DCI (Downlink Control Information) format 2_N, where N is a non-negative integer.

[0106] As one embodiment, the first information block includes some or all fields in a DCI format 2_10.

[0107] As one embodiment, the first information block includes some or all fields in a DCI format.

[0108] As one sub-embodiment of the above embodiment, the first information block includes DCI can provide more flexibility.

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

[0110] As one embodiment, the first information block configuring the first sub-band includes that the first information block explicitly or implicitly indicates the first sub-band.

[0111] As one embodiment, the first information block configuring the first sub-band includes that the first information block indicates a starting RB (or a lowest-indexed RB) of the first sub-band and a number of RBs included in the first sub-band.

[0112] As one embodiment, the first information block configuring the first sub-band includes that the first information block indicates a RIV (Resource Indicator Value) corresponding to the first sub-band, and a starting RB of the first sub-band and a number of contiguous RBs included in the first sub-band are used to generate the RIV.

[0113] As one embodiment, the first information block configuring the first sub-band includes that the first information block indicates a number of CRBs (Common Resource Blocks) between a lowest-indexed CRB included in the first sub-band and a point A and a number of contiguous CRBs included in the first sub-band.

[0114] As one embodiment, the first cell is a serving cell of the first node.

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

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

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

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

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

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

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

[0122] As one embodiment, the first information block configured for the first sub-band for full duplex includes that frequency domain resources configured in the first information block for downlink transmission in one uplink BWP of the first cell are the first sub-band.

[0123] As one embodiment, the first information block configured for the first sub-band for full duplex includes that frequency domain resources configured in the first information block for uplink transmission in one downlink BWP of the first cell are the first sub-band.

[0124] As one embodiment, the first information block configured for the first sub-band for full duplex includes that one uplink sub-band configured in the first information block on the first cell is the first sub-band, and frequency domain resources of the uplink sub-band overlapping with one downlink BWP of the first cell are the first sub-band.

[0125] As one embodiment, the first sub-band is located within a frequency band included by the first cell.

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

[0127] As an embodiment, the first sub-band 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 for uplink transmission in a downlink BWP.

[0130] As an embodiment, the first sub-band is a sub-band capable of being used for uplink transmission in a full duplex symbol.

[0131] As an embodiment, the first information block indicates a frequency domain location and a bandwidth of the first sub-band.

[0132] As an embodiment, the first information block indicates a subcarrier spacing of the first sub-band.

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

[0134] As an embodiment, the first sub-band includes one resource block (RB).

[0135] As an embodiment, the first sub-band includes a plurality of contiguous resource blocks.

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

[0137] As an embodiment, the first sub-band includes a usable uplink resource block.

[0138] As an embodiment, UL-SCH (Uplink Shared Channel) is transmitted on the first sub-band.

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

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

[0141] As an embodiment, the first uplink BWP and the first sub-band group constitute available uplink resource blocks before the random access procedure is initiated.

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

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

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

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

[0146] As an embodiment, transmitting UL-SCH includes transmitting information on a UL-SCH channel.

[0147] As an embodiment, transmitting UL-SCH includes carrying information on a UL-SCH channel.

[0148] As an embodiment, data on a UL-SCH is a TB (Transport Block) that is transmitted on a PUSCH (Physical Uplink Shared Channel) after being processed by a physical layer to generate a wireless signal.

[0149] As an embodiment, for a downlink transport 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, a received wireless signal is recovered into a TB after being processed by a physical layer, and then is delivered to a MAC entity for processing through a 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) resource is configured on the first uplink BWP, PUCCH is transmitted on the first uplink BWP.

[0155] As an embodiment, PRACH occasion is not configured on the first uplink BWP.

[0156] As an embodiment, one PRACH occasion is one time-frequency occasion of PRACH.

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

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

[0159] As an embodiment, one PRACH occasion is one 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 buffer.

[0161] As an embodiment, PRACH occasion not configured on the first uplink BWP includes that PRACH will not be transmitted on the frequency domain resource of the first uplink BWP.

[0162] As an embodiment, transmitting PRACH, or PRACH transmission includes transmitting a signal on a PRACH channel.

[0163] As an embodiment, transmitting PRACH, or PRACH transmission includes carrying information on a PRACH channel.

[0164] For other uplink physical channels, including but not limited to PUSCH, PUCCH, the interpretation of transmitting the uplink physical channel 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), PDCCH (Physical Downlink Control Channel), the interpretation of receiving the downlink physical channels can refer to the uplink physical channels, the difference is to change the sending to receiving, here will not be repeated.

[0166] As one embodiment, the random access procedure is initiated on the first cell.

[0167] As one embodiment, the random access procedure is triggered by PDCCH order.

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

[0169] As one embodiment, the random access procedure is triggered by an event of the RRC layer.

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

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

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

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

[0174] As one 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 one embodiment, initiating the random access procedure on the first cell includes selecting a carrier on the first cell for performing the random access procedure.

[0176] As one sub-embodiment of the above-mentioned embodiment, the carrier is UL, or, is SUL (Supplementary UpLink).

[0177] As one embodiment, initiating the random access procedure on the first cell comprises selecting a random access resource on the first cell for performing the random access procedure.

[0178] As one subembodiment of the above embodiment, the random access resource comprises a random access preamble.

[0179] As one subembodiment of the above embodiment, the random access resource comprises a PRACH occasion.

[0180] As one subembodiment of the above embodiment, the random access resource comprises a power for transmitting a PRACH.

[0181] As one subembodiment of the above embodiment, the random access resource comprises a beam for transmitting a PRACH.

[0182] As one embodiment, initiating the random access procedure on the first cell comprises an operation before transmitting a random access preamble.

[0183] As one embodiment, performing the random access procedure on the first cell comprises transmitting a random access preamble.

[0184] As one embodiment, whether to switch the active uplink BWP of the first cell from the first uplink BWP to a second uplink BWP when no PRACH occasion is configured on the first uplink BWP depends on whether a PRACH occasion is configured on the first subband.

[0185] As one embodiment, whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP when no PRACH occasion is configured on the first uplink BWP is related to whether a PRACH occasion is configured on the first subband.

[0186] As one embodiment, whether to switch the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP when no PRACH occasion is configured on the first uplink BWP is determined according to whether a PRACH occasion is configured on the first subband.

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

[0188] As a sub-embodiment of the above-mentioned embodiment, the IE configuring the second uplink BWP includes a field configuring the PRACH occasion, the field including at least one of RACH-ConfigCommon, RACH-ConfigCommonTwoStepRA, RACH-ConfigDedicated, RACH-ConfigTwoTA, RACH-ConfigGeneric, and RACH-ConfigGenericTwoStepRA.

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

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

[0191] As an embodiment, a PRACH occasion configured on the second sub-band is configured in a full-duplex symbol in time domain and on the second sub-band in 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 resource included by the first uplink BWP and the frequency domain resource included by the second uplink BWP both belong to a frequency band configured by the first cell.

[0194] As an embodiment, the first uplink BWP and the second uplink BWP do not overlap in frequency domain.

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

[0196] As an embodiment, a plurality of uplink BWP is configured on the first cell, the plurality of uplink BWP including the first uplink BWP and the second uplink BWP.

[0197] As an embodiment, only one uplink BWP in the plurality of uplink BWP is activated at any time.

[0198] As one embodiment, the BWP switching comprises activating an inactive BWP while deactivating an active BWP.

[0199] As one embodiment, the MAC entity of the first node itself controls whether to perform BWP switching at the start of the random access procedure.

[0200] Embodiment 2

[0201] Embodiment 2 illustrates a network architecture diagram according to one embodiment of the application, as shown in FIG. 2. FIG. 2 illustrates a diagram of 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 can be referred to as a 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 can 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 can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown, the 5GS / EPS provides packet-switched 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-switched services or other cellular networks. The NG-RAN includes NR Node Bs (gNBs) 203 and other gNBs 204. The gNBs 203 provide user and control plane protocol terminations toward the UEs 201. The gNBs 203 can be connected to the other gNBs 204 via an Xn interface (e.g., backhaul). The gNBs 203 can also be referred to as base stations, base transceiver stations, radio base stations, radio transceivers, transceiver functions, basic service sets (BSSs), extended service sets (ESSs), TRPs (Transmission Reception Points), or some other suitable terminology, and in NTN (Non Terrestrial Network, satellite network) networks, the gNBs 203 can be satellites, aircrafts or ground base stations relayed through satellites. The gNBs 203 provide the UEs 201 with access to the 5GC / EPC 210.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, unmanned aerial vehicles, aerial vehicles, narrowband internet of things devices, machine type communication devices, land vehicles, automobiles, vehicular equipment, vehicular communication units, wearable devices, or any other similar functional device. Those skilled in the art will also recognize that a UE 201 can be referred to 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 terminology. The gNB 203 is connected by an S1 / NG interface to the 5GC / EPC 210. The 5GC / EPC 210 includes MME / AMF / SMF 211, other MME / AMF / SMF 214, S-GW / UPF 212, and P-GW / UPF 213. The MME / AMF / SMF 211 is the control node that processes the signaling between the UE 201 and the 5GC / EPC 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user Internet Protocol (IP) packets are transferred through the S-GW / UPF 212, which is itself connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation as well as other functions. The P-GW / UPF 213 is connected to the Internet services 230. The Internet services 230 include operator's corresponding Internet Protocol services, which can specifically include the Internet, an intranet, an IP Multimedia Subsystem (IMS), and a Packet Switching (PS) streaming service.

[0202] As one embodiment, the UE 201 corresponds to a first node in the present application.

[0203] As an embodiment, the NR Node B 203 corresponds to a second node in the present application.

[0204] As an embodiment, the gNB 203 is a Macro Cell base station.

[0205] As an embodiment, the gNB 203 is a Micro Cell base station.

[0206] As an embodiment, the gNB 203 is a Pico Cell base station.

[0207] As an embodiment, the gNB 203 is a Femto Cell base station.

[0208] As an embodiment, the gNB 203 is a base station device supporting large latency difference.

[0209] As an embodiment, the gNB 203 is a flying platform device.

[0210] As an embodiment, the gNB 203 is a satellite device.

[0211] As an embodiment, the gNB 203 is a test device (e.g. a transceiver simulating part of the functions of a base station, a signaling tester).

[0212] As an embodiment, the wireless link from the UE 201 to the gNB 203 is an uplink, which is used to perform uplink transmission.

[0213] As an embodiment, the wireless link from the gNB 203 to the UE 201 is a downlink, which is used to perform downlink transmission.

[0214] As an embodiment, the UE 201 and the gNB 203 are connected through a Uu interface respectively.

[0215] Embodiment 3

[0216] Embodiment 3 illustrates a diagram of a radio protocol architecture for the user and control planes according to an embodiment of the present application, as shown in FIG. 3. FIG. 3 is a diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and control plane 300, which exhibits the radio protocol architecture for the control plane 300 of the UE and gNB 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 the PHY 301 herein. Layer 2 (L2 layer) 305 is above the PHY 301 and is responsible for the link between the UE and gNB by means of the PHY 301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, a RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which are terminated at the gNB on the network side. The PDCP sublayer 304 provides data ciphering and integrity protection, and also handles handover between gNBs. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and 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 the various radio resources (e.g., resource blocks) in one cell among the 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 illustrated, there can also be a V2X layer above the RRC sublayer 306 in the control plane 300 of the UE, which is responsible for generating a PC5 QoS parameter set and QoS rules according to received service data or service request, generating a PC5 QoS flow corresponding to the PC5 QoS parameter set and sending the PC5 QoS flow identification and the corresponding PC5 QoS parameter set to the AS (Access Stratum) layer for QoS processing of data packets belonging to the PC5 QoS flow identification by the AS layer; the V2X layer also includes a PC5-Signaling Protocol sublayer, which is responsible for instructing the AS layer whether each transmission is a PC5-S transmission or a V2X service data transmission.The radio protocol architecture for the user plane 350 includes layer 1 (LI layer) and layer 2 (L2 layer) which are substantially the same as the corresponding layers and sub-layers in the control plane 300 for the physical layer 351, the PDCP sub-layer 354 in the L2 layer 355, the RLC sub-layer 353 in the L2 layer 355, and the MAC sub-layer 352 in the L2 layer 355, but the PDCP sub-layer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes a SDAP (Service Data Adaptation Protocol) sub-layer 356, which is responsible for mapping between QoS (Quality of Service) flows and data radio bearers (DRBs) to support diverse service quality requirements. The radio protocol architecture in the user plane 350 at the L2 layer can include part or all of the protocol sub-layers of the SDAP sub-layer 356, the PDCP sub-layer 354, the RLC sub-layer 353, and the MAC sub-layer 352 for a UE. Although not shown, the UE can also have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that is terminated at the P-GW on the network side and an application layer that is terminated at the other end of the connection (e.g., far end UE, server, etc.).

[0217] As one embodiment, the radio protocol architecture in FIG. 3 is applicable to the first node in the present application.

[0218] As one embodiment, the radio protocol architecture in FIG. 3 is applicable to the second node in the present application.

[0219] As one embodiment, the MAC 302 and the PHY 301, the MAC 352 and the PHY 351 respectively transmit data through a transport channel; for downlink transmission, the transport channel is DL-SCH, and for uplink transmission, the transport channel is UL-SCH.

[0220] As one embodiment, the first information block in the present application is generated at the RRC 306.

[0221] As one embodiment, the first information block in the present application is generated at the PHY 301 or the PHY 351.

[0222] As one embodiment, the random access preamble in the present application is generated at the PHY 301 or the PHY 351.

[0223] As one embodiment, the random access response in the present application is generated at the MAC 302 or the MAC 352.

[0224] As an embodiment, the random access response in the present application is generated at the PHY 301 or the PHY 351.

[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] Embodiment 4

[0228] Embodiment 4 illustrates a hardware module diagram of a communication device according to an embodiment of the present application, as shown in FIG. 4. FIG. 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, upper layer packets from a core network or upper layer packets from a data source 477 are provided to a controller / processor 475. The core network and the data source 477 represent all 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, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocations for the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets, and signaling to the first communication device 450. Transmit processor 416 and multiple antenna transmit processor 471 implement various signal processing functions for the LI layer (i.e., physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and mapping of coded bits to 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 multiple antenna transmit processor 471 performs digital spatial pre-coding of the coded and modulated symbols, including codebook-based and non-codebook-based pre-coding, and beamforming processing, generating one or more spatial streams. The transmit processor 416 then maps to each spatial stream to a subcarrier, multiplexes the stream with reference signals (e.g., pilot) in the time and / or frequency domain, and then performs an inverse fast Fourier transform (IFFT) to generate a time-domain multicarrier symbol stream for the physical channel. The multiple antenna transmit processor 471 then performs transmit analog pre-coding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multiple antenna transmit processor 471 into a radio frequency stream, and then provides the radio frequency stream to a different antenna 420.

[0232] In transmissions 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 respective antenna 452. Each receiver 454 recovers information modulated onto an RF carrier and provides the recovered information at baseband as a stream of symbols to a receive processor 456. The receive processor 456 and a multiple access receiver processor 458 implement various signal processing functions of the Ll layer. The multiple access receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multiple access symbol streams from the receivers 454. The receive processor 456 converts the baseband multiple access symbol streams from the time-domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals are demultiplexed from the received symbol streams, with the reference signals to be used for channel estimation and the data signals to be recovered after multiple access detection in the multiple access receiver processor 458 for any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered by the receive processor 456 and used to generate soft decisions. The receive processor 456 then decodes and de-interleaves 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 a controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 can be associated with a memory 460 that stores program codes and data. The memory 460 can be referred to as a computer-readable medium. In transmissions from the second communication device 410 to the first communication device 450, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover 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 can 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, a data source 467 provides upper layer data packets to a controller / processor 459 using the data source 467. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmit 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, ciphering, packet segmentation and reordering, and multiplexing between logical and transport channels, L2 layer functionality for the user plane and control plane. The controller / processor 459 is also responsible for retransmission of lost packets, and signaling to the second communication device 410. Transmit processor 468 performs modulation mapping, channel coding processing, multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, and then transmit processor 468 modulates the generated spatial streams into multi-carrier / single-carrier symbol streams, which are further processed by analog precoding / beamforming operations in multi-antenna transmit processor 457 and then provided to different antennas 452 via transmitters 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency signal, and then provides the radio frequency signal to 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 receive 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 respective antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to multi-antenna receive processor 472 and receive processor 470. Receive processor 470 and multi-antenna receive processor 472 together implement the functionality of the L1 layer. Controller / processor 475 implements the functionality of the L2 layer. 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, controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data packets from the first communication device 450. Upper layer data packets from controller / processor 475 can be provided to the core network or all protocol layers above the L2 layer, and various control signals can be provided to the core network or L3 for L3 processing.

[0235] As one embodiment, the first communication device 450 apparatus includes at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the first communication device 450 apparatus at least to receive a first information block, the first information block configuring a first sub-band for a first cell as full duplex, the first sub-band comprising at least one resource block; transmit UL-SCH on a first uplink BWP; initiate a random access procedure on the first cell; wherein no PRACH occasion is configured on the first uplink BWP; whether to switch an active uplink BWP of the first cell from the first uplink BWP to a second uplink BWP depends on whether a PRACH occasion is configured on the first sub-band; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0236] As one embodiment, the first communication device 450 apparatus includes a memory storing a program of computer readable instructions to produce actions when executed by at least one processor, the actions comprising receiving a first information block, the first information block configuring a first sub-band for a first cell as full duplex, the first sub-band comprising at least one resource block; transmitting UL-SCH on a first uplink BWP; initiating a random access procedure on the first cell; wherein no PRACH occasion is configured on the first uplink BWP; whether to switch an active uplink BWP of the first cell from the first uplink BWP to a second uplink BWP depends on whether a PRACH occasion is configured on the first sub-band; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0237] As one embodiment, the second communication device 410 apparatus includes at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the second communication device 410 apparatus at least to transmit a first information block, the first information block configuring a first sub-band for a first cell as full duplex, the first sub-band comprising at least one resource block; wherein UL-SCH is transmitted on a first uplink BWP; a random access procedure is initiated on the first cell; no PRACH occasion is configured on the first uplink BWP; whether an active uplink BWP of the first cell is switched from the first uplink BWP to a second uplink BWP depends on whether a PRACH occasion is configured on the first sub-band; 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 comprises: a memory storing a computer readable program, the computer readable program, when executed by at least one processor, generates actions comprising: sending a first information block, the first information block configuring a first sub-band for a first cell to be full duplex, the first sub-band comprising at least one resource block; wherein a UL-SCH is sent on a first uplink BWP; a random access procedure is initiated on the first cell; no PRACH opportunity is configured on the first uplink BWP; whether an active uplink BWP of the first cell is switched from the first uplink BWP to a second uplink BWP depends on whether a PRACH opportunity is configured on the first sub-band; 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 a first node in the present application.

[0240] As an embodiment, the second communication device 410 corresponds to a second node in the present 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 distributed 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 transmission processor 471, the transmission 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 transmission processor 457, the transmission 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 configured 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 transmission processor 471, the transmission processor 416 or the controller / processor 475 is configured to transmit the 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 configured to receive the random access response in the present application.

[0252] Embodiment 5

[0253] Embodiment 5 illustrates a flow chart of wireless signal transmission according to an embodiment of the present application, as shown in FIG. 5. In FIG. 5, the transmission is between a first node N51 and a second node N52 over an air interface. It is specifically pointed out that the sequence in this example does not limit the sequence of signal transmission and the sequence of implementation in the present application.

[0254] For the first node N51, a first information block is received in step S511; a random access procedure is initiated in step S512; a random access preamble is transmitted in a first cell in step S513; a random access response is monitored on an active downlink BWP of the first cell in step S514.

[0255] For the second node N52, a first information block is transmitted in step S521; a random access preamble is received on an active uplink BWP of a first cell in step S522; a random access response is transmitted on an active downlink BWP of the first cell in step S523.

[0256] In embodiment 5, a first information block is received, the first information block configuring a first sub-band for a first cell as full duplex, the first sub-band including at least one resource block; a UL-SCH is transmitted 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 an active uplink BWP of the first cell from the first uplink BWP to a second uplink BWP depends on whether a PRACH opportunity is configured on the first sub-band; the first uplink BWP and the second uplink BWP are both configured on the first cell; the random access procedure is performed.

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

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

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

[0260] As one embodiment, the second node N52 is a maintenance base station of a Secondary cell group (SCG) of the first node N51.

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

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

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

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

[0265] As one embodiment, the first node transmits UL-SCH on the first sub-band before initiating the random access procedure.

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

[0267] As one 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 one 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 one embodiment, the first uplink BWP is a common uplink BWP.

[0270] As one embodiment, the first uplink BWP is a UE-dedicated uplink BWP.

[0271] As one embodiment, the first uplink BWP is a firstActiveUplinkBWP.

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

[0273] As one embodiment, the first downlink BWP is a UE-dedicated downlink BWP.

[0274] As one embodiment, the first downlink BWP is a firstActiveDownlinkBWP.

[0275] As one embodiment, the first downlink BWP is a defaultDownlinkBWP.

[0276] As one embodiment, the first downlink BWP is a defaultDownlinkBWP-RedCap.

[0277] As one embodiment, the first downlink BWP is a firstOutsideActiveTimeBWP.

[0278] As one embodiment, the first downlink BWP is a firstWithinActiveTimeBWP.

[0279] As one embodiment, performing the random access procedure comprises transmitting a random access preamble and monitoring for a random access response.

[0280] As one embodiment, the random access preamble is transmitted on the first cell.

[0281] As one embodiment, the random access preamble is transmitted in an uplink active BWP of the first cell, or in the first sub-band of the first cell.

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

[0283] As one 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 not a SpCell.

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

[0286] As an embodiment, the random access response is monitored on an active downlink BWP included in a SpCell of a 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 drawing of embodiment 5 illustrates the case that the first cell is a SpCell.

[0289] Embodiment 6

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

[0291] Embodiment 6 is applicable to initiating a random access procedure when no PRACH opportunity is configured on a first uplink BWP and no PRACH opportunity is configured on a first sub-band.

[0292] In embodiment 6, in step S601, an active uplink BWP is switched from a first uplink BWP to a second uplink BWP; in step S602, it is judged whether the first cell is a SpCell, if yes, step S603 is executed, if no, step S604 is executed; in step S603, an active downlink BWP is switched from a first downlink BWP to a second downlink BWP; in step S604, a random access preamble is sent in a 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 sub-band, for performing the random access procedure, 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 switching of the active uplink BWP from the first uplink BWP to the second uplink BWP includes that 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 an initialUplinkBWP.

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

[0298] As one embodiment, the first uplink BWP and the second uplink BWP have different BWP identities.

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

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

[0301] As one embodiment, the first downlink BWP and the first uplink BWP have the same BWP identity.

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

[0303] As one embodiment, the second downlink BWP and the second uplink BWP have the same BWP identity.

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

[0305] As one embodiment, the second uplink BWP is initialUplinkBWP, and the second downlink BWP is initialDownlinkBWP.

[0306] As one 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 the initialUplinkBWP-RedCap and the initialDownlinkBWP-RedCap.

[0307] As one embodiment, the first downlink BWP includes frequency domain resources belonging to a frequency band configured for the first cell, and the second downlink BWP includes frequency domain resources belonging to the frequency band configured for the first cell.

[0308] As one embodiment, the first downlink BWP and the second downlink BWP do not overlap in frequency domain.

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

[0310] As one embodiment, a plurality of downlink BWPs are configured on the first cell, the plurality of downlink BWPs including the first downlink BWP and the second downlink BWP.

[0311] As one embodiment, only one downlink BWP among the plurality of downlink BWPs is activated at any time.

[0312] As one embodiment, the random access procedure is performed.

[0313] As one embodiment, when no PRACH opportunity is configured on the first uplink BWP and no PRACH opportunity is configured on the first sub-band, performing the random access procedure includes transmitting a random access preamble in a first PRACH opportunity included in the second uplink BWP.

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

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

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

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

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

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

[0320] As one embodiment, the TDD uplink-downlink configuration indicates a link direction of the symbol.

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

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

[0323] As one embodiment, the TDD uplink-downlink configuration further indicates a subcarrier spacing employed.

[0324] As one embodiment, the TDD uplink-downlink configuration comprises part or all fields in a tdd-UL-DL-ConfigCommon IE.

[0325] As one embodiment, the TDD uplink-downlink configuration comprises part or all fields in a tdd-UL-DL-ConfigDedicated IE.

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

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

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

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

[0330] As one embodiment, if the first cell is a special cell, performing the random access procedure comprises: monitoring a random access response on the second downlink BWP.

[0331] As one embodiment, monitoring a random access response on the second downlink BWP comprises: monitoring a PDCCH on the second downlink BWP; wherein the PDCCH is addressed to a C-RNTI, the random access procedure is used to request a beam failure recovery, and the random access preamble is contention-free.

[0332] As an embodiment, the monitoring the random access response on the second downlink BWP comprises: monitoring a PDCCH on the second downlink BWP, the PDCCH is identified by a RA-RNTI, a PDSCH scheduled by the PDCCH carries the random access response.

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

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

[0335] As a sub-embodiment of the above-mentioned embodiment, the random access response comprises a MAC subPDU (protocol data unit), the MAC subPDU comprises at least one of a Backoff Indicator, or an identification of the random access preamble, or a timing advance command (TAC).

[0336] As an embodiment, if the first cell is not a special cell, the performing the random access procedure comprises: monitoring the random access response on an active downlink BWP included by a special cell; the first cell and the special cell belong to a same cell group (CG).

[0337] As an embodiment, when a random access procedure is initiated on the first cell, if no PRACH opportunity is configured on the first uplink BWP, and no PRACH opportunity is configured on the first sub-band, first switching the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP; if the first cell is a special cell, switching the active downlink BWP of the first cell from the first downlink BWP to the second downlink BWP, the second downlink BWP has a same BWP identifier as the second uplink BWP; then performing the random access procedure on the second uplink BWP and the second downlink BWP.

[0338] As an embodiment, when initiating a random access procedure on the first cell, if no PRACH occasion is configured on the first uplink BWP and no PRACH occasion is configured on the first sub-band, first switching the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP; if the first cell is not a SpCell, performing the random access procedure on the second uplink BWP of the first cell and the active downlink BWP included by the SpCell to which the CG of the first cell belongs.

[0339] Embodiment 7

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

[0341] Embodiment 7 is applicable to initiating a random access procedure when no PRACH occasion is configured on the first uplink BWP but a PRACH occasion is configured on the first sub-band.

[0342] In embodiment 7, a random access preamble is sent in the second PRACH occasion included by the first sub-band in step S701; a random access response is monitored on the active downlink BWP of the first cell in step S702.

[0343] The diagram of embodiment 7 illustrates the case that the first cell is a SpCell.

[0344] As an embodiment, when no PRACH occasion is configured on the first uplink BWP but a PRACH occasion is configured on the first sub-band, 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 sub-band is not indicated LBT (Listen Before Talk) failure.

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

[0348] As a sub-example of the above embodiment, the first information block comprises a field configuring the PRACH occasion, the field comprising at least one of RACH-ConfigCommon, Rach-ConfigCommonTwoStepRA, RACH-ConfigDedicated, RACH-ConfigTwoTA, RACH-ConfigGeneric, and RACH-ConfigGenericTwoStepRA.

[0349] As an example, when the PRACH occasion is not configured on the first uplink BWP but is configured on the first sub-band, performing the random access procedure comprises transmitting a random access preamble in a second PRACH occasion comprised in the first sub-band.

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

[0351] As an example, the second PRACH occasion occupies at least part of frequency domain resources of the first sub-band in frequency domain.

[0352] As an example, one full duplex symbol is an SBFD symbol.

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

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

[0355] As an example, one full duplex symbol is a time domain symbol configured by an SBFD sub-band in time domain.

[0356] As an example, one full duplex symbol is a time domain symbol supporting full duplex.

[0357] As an example, one full duplex symbol is a time domain symbol applicable to SBFD.

[0358] As an example, one full duplex symbol is a time domain symbol capable of simultaneous uplink transmission and downlink transmission.

[0359] As an example, one full duplex symbol is a time domain symbol capable of simultaneous uplink transmission and downlink transmission at the network side (or base station side).

[0360] As an example, one full duplex symbol is a time domain symbol capable of simultaneous uplink transmission and downlink transmission at both the network side (or base station side) and the user equipment side.

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

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

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

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

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

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

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

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

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

[0370] As an embodiment, one uplink symbol is a symbol not configured with the first sub-band in time domain.

[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 comprises: 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 comprises: 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 comprises: the first information block indicating multiple full duplex symbols.

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

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

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

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

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

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

[0381] As one embodiment, the first information block indicating the at least one full duplex symbol comprises: at least one symbol overlapped in time domain with a symbol indicated (or provided) by the first information block is the at least one full duplex symbol.

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

[0383] As one embodiment, the first information block indicating the at least one full duplex symbol comprises: at least one symbol indicated as downlink or flexible by the TDD uplink-downlink configuration and fully or partially overlapped in time domain with a symbol indicated (or provided) by the first information block is the at least one full duplex symbol.

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

[0385] As an embodiment, the first information block indicating the at least one full duplex symbol comprises: the first information block indicating at least one full duplex symbol from a periodic time window, the periodic time window comprising a plurality of consecutive time domain symbols, a time length of the periodic time window and a slot format being configured by a network.

[0386] As an embodiment, the first information block indicating the at least one full duplex symbol comprises: the first information block indicating whether at least one symbol is applicable or associated or corresponding or for the first sub-band, a symbol being applicable or associated or corresponding or for the first sub-band is a full duplex symbol.

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

[0388] As an embodiment, when no PRACH occasion is configured on the first uplink BWP but a PRACH occasion is configured on the first sub-band, performing the random access procedure comprises: when the first cell is a SpCell, monitoring a random access response on an active downlink BWP of the first cell; the first sub-band 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 comprises: monitoring a random access response on each full duplex symbol included by the at least one full duplex symbol on a downlink sub-band included by the active downlink BWP, the downlink sub-band being not the first sub-band.

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

[0391] As an embodiment, when the first uplink BWP is not configured with PRACH occasions but the first sub-band is configured with PRACH occasions, performing the random access procedure comprises: when the first cell is not a SpCell, monitoring a random access response on an active downlink BWP included by a SpCell of a CG to which the first cell belongs; the first sub-band is located in the active downlink BWP of the first cell.

[0392] As an embodiment, the random access response can refer to the description in Embodiment 6, which is not described here again.

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

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

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

[0396] As an embodiment, when a random access procedure is initiated on the first cell, if the first uplink BWP is not configured with PRACH occasions but the first sub-band is configured with PRACH occasions, and the first cell is a SpCell, the random access procedure is performed on the first sub-band and an active downlink BWP of the first cell.

[0397] As an embodiment, when a random access procedure is initiated on the first cell, if the first uplink BWP is not configured with PRACH occasions but the first sub-band is configured with PRACH occasions, and the first cell is not a SpCell, the random access procedure is performed on the first sub-band and an active downlink BWP included by a SpCell of a CG to which the first cell belongs.

[0398] Embodiment 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 described in FIG. 8.

[0400] As an embodiment, one serving cell is configured with one or more BWPs, and an 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-mentioned embodiment, the plurality of BWPs are located in a 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, for unpaired spectrum, TDD mode is applied.

[0404] As an embodiment, in TDD mode, BWP switching is BWP pair granularity, i.e. switching the active BWP pair from one pair of BWPs to another pair of BWPs.

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

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

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

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

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

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

[0411] The diagram of embodiment 8 illustrates that the first cell operates in TDD mode, including one active uplink BWP and one active downlink BWP pair.

[0412] As an embodiment, the BWP bandwidth in a cell can be flexibly configured, which can effectively support UEs with different bandwidth processing capabilities, and can also effectively adapt to UE service requirements. When the traffic volume is small, a smaller BWP bandwidth can be configured to achieve power saving effect.

[0413] Embodiment 9

[0414] Embodiment 9 illustrates a diagram of the first sub-band according to an embodiment of the present application, as shown in FIG. 9. In FIG. 9, the oblique line filled rectangular box represents the first sub-band, and the oblique grid filled rectangular box represents the guard band.

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

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

[0417] As one embodiment, the first uplink BWP has the same center frequency as the first downlink BWP; wherein the first cell operates in a TDD mode.

[0418] As one embodiment, the first sub-band is configured for uplink transmission.

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

[0420] As one embodiment, frequency domain resources in the active downlink BWP of the first cell other than the first sub-band are used for a downlink sub-band and a guard band, 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 one sub-embodiment of the above embodiment, the first sub-band and the downlink sub-band are configured with the same subcarrier spacing.

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

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

[0424] As one 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 one 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 one 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 one embodiment, the bandwidth of the first sub-band 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 sub-band is located in the upper part of the active downlink BWP of the first cell, and the center frequency of the first sub-band is different from the center frequency of the active downlink BWP of the first cell.

[0430] Embodiment 10

[0431] Embodiment 10 illustrates a schematic diagram of an active uplink BWP, an active downlink BWP, a first sub-band and a full-duplex symbol according to an embodiment of the present application, as shown in FIG. 10. FIG. 10 is applicable to a TDD mode, wherein a rectangular box filled with U represents an uplink symbol, a symbol filled with D represents a downlink symbol; a rectangular box filled with diagonal lines represents a time-frequency resource for full-duplex; a rectangular box filled with diagonal grid represents a time-frequency resource for protection.

[0432] As an embodiment, before initiating the random access procedure, 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 is overlapping frequency-domain resource between the first sub-band and the first uplink BWP.

[0434] As an embodiment, in a time-domain symbol, there is no overlapping frequency-domain resource between the first sub-band and the first uplink BWP.

[0435] As an embodiment, the boundary of a resource block included in the first sub-band is aligned with the 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 a resource block included in the first sub-band is aligned with the boundary of a resource block in the active downlink BWP.

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

[0439] As an embodiment, on 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, i.e. the base station can perform uplink transmission and downlink transmission simultaneously in one full duplex symbol; while the UE can only perform uplink transmission, or downlink transmission in one 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, i.e. the base station and the UE can perform uplink transmission and downlink transmission simultaneously in one full duplex symbol; the support of the full duplex symbol by the UE depends on the UE capability.

[0442] As an embodiment, in one full duplex symbol, an uplink sub-band for uplink transmission, a downlink sub-band for downlink transmission and a guard band are included in one downlink BWP; unless specifically stated, the monitoring or receiving in the downlink BWP is the monitoring or receiving in the downlink sub-band included in the downlink BWP; wherein the uplink sub-band is configured for full duplex in the downlink BWP.

[0443] As an embodiment, in one full duplex symbol, a downlink sub-band for downlink transmission, an uplink sub-band for uplink transmission and a guard band are included in one uplink BWP; unless specifically stated, the transmitting in the uplink BWP is the transmitting in the uplink sub-band included in the uplink BWP; wherein the downlink sub-band is configured for full duplex in the uplink BWP.

[0444] Embodiment 11

[0445] Embodiment 11 shows a structure block diagram of a processing apparatus in a first node according to an embodiment of the present application, as shown in FIG. 11. In FIG. 11, the first node processing apparatus 1100 includes a first receiver 1101 and a first transceiver 1102; the first node 1100 is a UE.

[0446] In embodiment 11, the first receiver 1101 receives a first information block, the first information block configures a first sub-band for full duplex for a first cell, the first sub-band includes at least one resource block; the first transceiver 1102 transmits UL-SCH on a first uplink BWP; initiates 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 a second uplink BWP depends on whether a PRACH opportunity is configured on the first sub-band; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0447] As one embodiment, the first transceiver 1102 switches the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP, where no PRACH occasion is configured on the first sub-band.

[0448] As one embodiment, the first transceiver 1102 switches the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP, where no PRACH occasion is configured on the first sub-band; the first transceiver 1102 switches the active downlink BWP of the first cell from a first downlink BWP to a second downlink BWP, where the first cell is a special cell, where a DL-SCH is received on the first downlink BWP before initiating the random access procedure; the first downlink BWP and the second downlink BWP are both configured on the first cell, and the second downlink BWP has a same BWP identity as the second uplink BWP.

[0449] As one embodiment, the first transceiver 1102 switches the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP, where no PRACH occasion is configured on the first sub-band; the first transceiver 1102 switches the active downlink BWP of the first cell from a first downlink BWP to a second downlink BWP, where the first cell is a special cell, where a DL-SCH is received on the first downlink BWP before initiating the random access procedure; the first downlink BWP and the second downlink BWP are both configured on the first cell, and the second downlink BWP has a same BWP identity as the second uplink BWP; the first transceiver 1102 performs the random access procedure, including: transmitting a random access preamble in a first PRACH occasion included in the second uplink BWP, where the first PRACH occasion occupies at least one uplink symbol in time domain; monitoring a random access response on the second downlink BWP.

[0450] As one embodiment, a PRACH occasion is configured on the first sub-band, and the active uplink BWP of the first cell is maintained as the first uplink BWP.

[0451] As one embodiment, the first transceiver 1102 switches the active uplink BWP of the first cell from the first uplink BWP to the second uplink BWP, where no PRACH occasion is configured on the first sub-band; the first transceiver 1102 switches the active downlink BWP of the first cell from a first downlink BWP to a second downlink BWP, where the first cell is a special cell, where a DL-SCH is received on the first downlink BWP before initiating the random access procedure; the first downlink BWP and the second downlink BWP are both configured on the first cell, and the second downlink BWP has a same BWP identity as the second uplink BWP; the first transceiver 1102 performs the random access procedure, including: transmitting a random access preamble in a first PRACH occasion included in the second uplink BWP, where the first PRACH occasion occupies at least one uplink symbol in time domain; monitoring a random access response on the second downlink BWP.

[0452] As an embodiment, the first transceiver 1102, which is configured with a PRACH opportunity on the first sub-band, keeps the active uplink BWP of the first cell as the first uplink BWP; performing the random access procedure comprises: monitoring a random access response on an active downlink BWP of the first cell; the first sub-band 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 comprises at least one of the receiver 454 (including the antenna 452), the reception processor 456, the multi-antenna reception processor 458 or the controller / processor 459 in FIG. 4 of the present application.

[0454] As an embodiment, the first receiver 1101 comprises at least one of the receiver 454 (including the antenna 452), the reception processor 456, the multi-antenna reception processor 458 or the controller / processor 459 in FIG. 4 of the present application.

[0455] As an embodiment, the first transceiver 1102 comprises at least one of the receiver 454 (including the antenna 452), the reception processor 456, the multi-antenna reception processor 458 or the controller / processor 459 in FIG. 4 of the present application.

[0456] As an embodiment, the first transceiver 1102 comprises at least one of the receiver 454 (including the antenna 452), the reception processor 456, the multi-antenna reception processor 458 or the controller / processor 459 in FIG. 4 of the present application.

[0457] As an embodiment, the first transceiver 1102 comprises at least one of the receiver 454 (including the antenna 452), the reception processor 456, the multi-antenna reception processor 458 or the controller / processor 459 in FIG. 4 of the present application.

[0458] As an embodiment, the first transceiver 1102 comprises at least one of the receiver 454 (including the antenna 452), the reception processor 456, the multi-antenna reception processor 458 or the controller / processor 459 in FIG. 4 of the present application.

[0459] Embodiment 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 FIG. 12. In FIG. 12, the second node processing device 1200 comprises a second transceiver 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 transmits a first information block, the first information block configures a first sub-band for a first cell as full duplex, the first sub-band comprises at least one resource block; wherein, the UL-SCH is transmitted on a first uplink BWP; the random access procedure 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 a second uplink BWP depends on whether a PRACH opportunity is configured on the first sub-band; the first uplink BWP and the second uplink BWP are both configured on the first cell.

[0462] As an embodiment, no PRACH opportunity is configured on the first sub-band, 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 sub-band, 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 a first downlink BWP to a second downlink BWP; wherein, the DL-SCH is received on the first downlink BWP before the random access procedure is initiated; 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.

[0464] As an embodiment, no PRACH opportunity is configured on the first sub-band, 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 a first downlink BWP to a second downlink BWP; wherein, the DL-SCH is received on the first downlink BWP before the random access procedure is initiated; 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 performs the random access procedure, including: receiving a random access preamble in a first PRACH opportunity included in the second uplink BWP, the first PRACH opportunity occupies at least one uplink symbol in the time domain; transmitting a random access response on the second downlink BWP.

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

[0466] As an embodiment, the first sub-band is configured with PRACH occasions, and the active uplink BWP of the first cell is kept as the first uplink BWP; the third transceiver 1203 performs the random access procedure, including: receiving a random access preamble in a second PRACH occasion included in the first sub-band, the second PRACH occasion occupying 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, the first sub-band is configured with PRACH occasions, and the active uplink BWP of the first cell is kept as the first uplink BWP; the third transceiver 1203 performs the random access procedure, including: receiving a random access preamble in a second PRACH occasion included in the first sub-band, the second PRACH occasion occupying 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 an active downlink BWP of the first cell; the first sub-band is located in the active downlink BWP of the first cell, and the first cell is a SpCell.

[0468] As an embodiment, the first sub-band is configured with PRACH occasions, and the active uplink BWP of the first cell is kept as the first uplink BWP; the fourth transceiver 1204 performs the random access procedure, including: monitoring a random access response on an active downlink BWP of the first cell; the first sub-band 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 transceiver 1202 includes at least one of the transmitter 418 (including the antenna 420), the transmission processor 416, the multi-antenna transmission processor 471 or the controller / processor 475 in FIG. 4.

[0471] As an embodiment, the second transceiver 1202 includes at least one of the transmitter 418 (including the antenna 420), the transmission processor 416, the multi-antenna transmission processor 471 or the controller / processor 475 in FIG. 4.

[0472] As an embodiment, the second transceiver 1202 includes at least one of the transmitter 418 (including the antenna 420), the transmission processor 416, the multi-antenna transmission processor 471 or the controller / processor 475 in FIG. 4.

[0473] As one embodiment, the second transceiver 1202 includes 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 of FIG. 4.

[0474] As one embodiment, the second transceiver 1202 includes 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 of FIG. 4.

[0475] As one embodiment, the second transceiver 1202 includes 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 of FIG. 4.

[0476] As one embodiment, the third transceiver 1203 includes 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 of FIG. 4.

[0477] As one embodiment, the third transceiver 1203 includes 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 of FIG. 4.

[0478] As one embodiment, the third transceiver 1203 includes 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 of FIG. 4.

[0479] As one embodiment, the third transceiver 1203 includes 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 of FIG. 4.

[0480] As one embodiment, the fourth transceiver 1203 includes 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 of FIG. 4.

[0481] As one embodiment, the fourth transceiver 1203 includes 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 of FIG. 4.

[0482] As an example, the fourth transceiver 1203 includes at least one of the transmitter 418 (including the antenna 420), the transmit processor 416, the multi-antenna transmit processor 471, or the controller / processor 475 in FIG. 4.

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

[0484] Those skilled in the art can understand that all or part of the steps of the above-mentioned method can be instructed by a program to relevant hardware, 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. Alternatively, all or part of the steps of the above-mentioned embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above-mentioned embodiments 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 combination of software and hardware. The first type of communication node or UE or terminal in the present application includes but is not limited to a mobile phone, a tablet computer, a notebook computer, a network card, a low-power device, an eMTC (enhanced Machine Type Communication) device, an NB-IoT device, a vehicle-mounted communication device, a flying vehicle, an airplane, a drone, a remote control airplane, and other wireless communication devices. The second type of communication node or base station or network side device in the present application includes but is not limited to a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission and reception point (TRP), a relay satellite, a satellite base station, an air base station, and other wireless communication devices.

[0485] The above describes only the preferred embodiments 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 transmits a UL-SCH on a first uplink BWP; and initiates 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.

2. The first node according to claim 1, wherein: include: The first transceiver, 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.

3. The first node according to claim 1 or 2, characterized in that include: the first transceiver, the first cell being a special cell, switching 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 a 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 procedure, 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; Monitoring the second downlink BWP 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 procedure, 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 procedure 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; Wherein, a UL-SCH is transmitted on a first uplink BWP; a random access procedure 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; 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 configures a first subband for full duplex in 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 used in a second node of 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, a UL-SCH is transmitted on a first uplink BWP; a random access procedure 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; The first uplink BWP and the second uplink BWP are both configured on the first cell.

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