Method and device used for wireless communication

Abstract

The invention discloses a method and a device used for wireless communication. The first node sends a first random access preamble on the first time-frequency resource; starting a random access response window; monitoring a PDCCH (Physical Downlink Control Channel) identified by the first RNTI on the SpCell, wherein downlink distribution indicated by the PDCCH is used for scheduling a random access response; wherein the first RNTI depends on whether the first time-frequency resource belongs to a first sub-band in a frequency domain; when the first time-frequency resource is orthogonal to the first sub-band in a frequency domain, the first RNTI depends on a time domain position of a PRACH sending opportunity corresponding to the first time-frequency resource; when the first time frequency resource is located in the first sub-band on the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending opportunity corresponding to the first time frequency resource; the first deviation value is pre-configured; the first RNTI is a non-unicast RNTI. According to the invention, the collision probability of the RNTI can be effectively reduced, and UE receiving is simplified.

Description

Technical Field

[0001] The present application relates to a method and a device in a wireless communication system, and more particularly to a method and a device supporting a random access (RA) process in wireless communication. Background Art

[0002] In the future, the application scenarios of wireless communication systems will become more and more diversified, and different application scenarios will put forward different performance requirements for the system. In order to meet the different performance requirements of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to study the new radio (NR) (or 5G), and the WI (Work Item) of the new radio (NR) was passed at the 3GPP RAN #75 plenary meeting, and the standardization work on NR began.

[0003] Random access is a common method in cellular communications. Uplink synchronization and uplink transmission resources can be obtained through a 4-step random access process or a 2-step random access process.

[0004] FD (Full Duplex) can significantly improve spectrum efficiency and thus become a research hotspot, among which SBFD (SubBand Full Duplex) has particularly attracted the research interest of the industry. Summary of the invention

[0005] For random access in SBFD scenarios, existing random access operations may no longer be applicable. The present application discloses a solution. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other. Further, although the original intention of the present application is for the Uu air interface, the present application can also be used for the PC5 port. Further, although the original intention of the present application is for the SBFD scenario, the present application is also applicable to other non-SBFD scenarios facing similar problems, achieving similar technical effects. In addition, the use of a unified solution for different scenarios also helps to reduce hardware complexity or improve compatibility. In the absence of conflict, the embodiments of any node of the present application and the features in the embodiments can be applied to any other node. In particular, the interpretation of the terms (Terminology), nouns, functions, and variables in the present application (if not otherwise specified) can refer to the definitions in the 3GPP specification protocols TS38 series and TS37 series.

[0006] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0007] Sending a first random access preamble on a first time-frequency resource;

[0008] Start random access response window;

[0009] Monitoring a PDCCH identified by the first RNTI on the SpCell, wherein a downlink allocation indicated by the PDCCH is used to schedule a random access response;

[0010] Among them, the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH sending opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending opportunity corresponding to the first time-frequency resource; the first offset value is pre-configured; the first RNTI is a non-unicast RNTI.

[0011] As an embodiment, the first time-frequency resource corresponds to a PRACH (Physical Random Access CHannel) transmission occasion.

[0012] As an embodiment, the above method is applicable to a FDD (Frequency Division Duplex) system.

[0013] As an embodiment, the above method is applicable to a scenario where PRACH transmission opportunities are configured in multiple discontinuous frequency domain resources.

[0014] As an embodiment, the above method is applicable to a SBFD scenario.

[0015] As an embodiment, the SpCell (Special Cell) is a PCell (Primary Cell).

[0016] As a sub-embodiment of the above embodiment, the SpCell belongs to MCG (Master Cell Group).

[0017] As an embodiment, the SpCell is a PSCell (Primary SCG Cell).

[0018] As a sub-embodiment of the above embodiment, the SpCell belongs to SCG (Secondary Cell Group).

[0019] As an embodiment, the first time-frequency resource belongs to the SpCell in the frequency domain.

[0020] As an embodiment, the first time-frequency resource does not belong to the SpCell in the frequency domain.

[0021] As an embodiment, the first time-frequency resource belongs to an SCell (Secondary Cell) in the frequency domain.

[0022] As an embodiment, the cell to which the first time-frequency resource belongs in the frequency domain is respectively configured with an uplink carrier and a downlink carrier, and the uplink carrier and the downlink carrier do not overlap.

[0023] As an embodiment, the transmission direction on the first sub-band is uplink.

[0024] As an embodiment, the above method effectively distinguishes the first RNTI (Radio Network Temporary Identifier) ​​corresponding to the PRACH sending timing located in the first subband and outside the first subband in the frequency domain through the first offset value, which can effectively reduce the RNTI collision probability and simplify UE (User Equipment) reception.

[0025] As an embodiment, the first RNTI in the above method depends on whether the first time-frequency resource belongs to the first subband in the frequency domain, thereby improving the system processing flexibility.

[0026] According to one aspect of the present application, it includes:

[0027] The time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource is indicated by the index of the first time slot of the PRACH transmission opportunity in a half frame;

[0028] One frame includes 10 subframes, and the frame is divided into two half frames of equal size, and each half frame includes 5 subframes.

[0029] As an embodiment, in the prior art, the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource is indicated by the index of the first time slot of the PRACH transmission opportunity in a system frame. In the above method, the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource is indicated by the index of the first time slot of the PRACH transmission opportunity in a half frame. The above method can maintain the space of the first RNTI, has backward compatibility, and simplifies system design.

[0030] According to one aspect of the present application, it includes:

[0031] The first subband is located in a downlink BWP; or, the first subband is an uplink BWP.

[0032] As an embodiment, when the first sub-band is located in the downlink BWP (BandWidth Part), the first sub-band is configured for SBFD.

[0033] As an embodiment, the above method can increase uplink transmission resources, improve uplink transmission capacity, and shorten user access delay by configuring the first subband in the downlink BWP.

[0034] According to one aspect of the present application, it includes:

[0035] receiving a first signaling indicating a frequency domain position of the first subband in the downlink BWP;

[0036] The first sub-band is discontinuous with the downlink sub-band, and the downlink sub-band includes frequency domain resources used for downlink reception in the downlink BWP.

[0037] As an embodiment, the transmission direction on the downlink sub-band is downlink.

[0038] As an embodiment, in the above method, the first subband and the downlink subband are not continuous, so as to avoid interference.

[0039] According to one aspect of the present application, it includes:

[0040] receiving second signaling, where the second signaling indicates that Q PRACH transmission opportunities are included in a time instance;

[0041] Among them, the Q PRACH transmission opportunities are frequency-division multiplexed in the first subband, and the Q value is one of 1, 2, 4 and 8; the PRACH transmission opportunity corresponding to the first time-frequency resource belongs to one of the Q PRACH transmission opportunities in the frequency domain.

[0042] As an embodiment, the frequency domain configuration of the PRACH transmission opportunity in the first subband in the above method has backward compatibility.

[0043] As an embodiment, the above method supports frequency division multiplexing of PRACH transmission opportunities.

[0044] According to one aspect of the present application, it includes:

[0045] The first RNTI is a RA-RNTI, or the first RNTI is a MSGB-RNTI.

[0046] According to one aspect of the present application, it includes:

[0047] When the PDCCH is detected and the random access preamble identifier included in the MAC sub-PDU included in the random access response corresponds to the first random access preamble, the random access response is successfully received.

[0048] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0049] Receiving a first random access preamble on a first time-frequency resource;

[0050] Sending a PDCCH identified by the first RNTI on the SpCell, where the downlink allocation indicated by the PDCCH is used to schedule a random access response;

[0051] Among them, the random access response window is activated; the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH sending opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending opportunity corresponding to the first time-frequency resource; the first offset value is pre-configured; the first RNTI is a non-unicast RNTI.

[0052] According to one aspect of the present application, it includes:

[0053] The time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource is indicated by the index of the first time slot of the PRACH transmission opportunity in a half frame;

[0054] One frame includes 10 subframes, and the frame is divided into two half frames of equal size, and each half frame includes 5 subframes.

[0055] According to one aspect of the present application, it includes:

[0056] The first subband is located in a downlink BWP; or, the first subband is an uplink BWP.

[0057] According to one aspect of the present application, it includes:

[0058] Sending a first signaling, where the first signaling indicates a frequency domain position of the first subband in the downlink BWP;

[0059] The first sub-band is discontinuous with the downlink sub-band, and the downlink sub-band includes frequency domain resources used for downlink reception in the downlink BWP.

[0060] According to one aspect of the present application, it includes:

[0061] Sending a second signaling, where the second signaling indicates that a time instance includes Q PRACH transmission opportunities;

[0062] Among them, the Q PRACH transmission opportunities are frequency-division multiplexed in the first subband, and the Q value is one of 1, 2, 4 and 8; the PRACH transmission opportunity corresponding to the first time-frequency resource belongs to one of the Q PRACH transmission opportunities in the frequency domain.

[0063] According to one aspect of the present application, it includes:

[0064] The first RNTI is a RA-RNTI, or the first RNTI is a MSGB-RNTI.

[0065] According to one aspect of the present application, it includes:

[0066] When the PDCCH is detected and the random access preamble identifier included in the MAC sub-PDU included in the random access response corresponds to the first random access preamble, the random access response is successfully received.

[0067] The present application discloses a first node used for wireless communication, characterized in that it includes:

[0068] The first transmitter sends a first random access preamble on a first time-frequency resource; and starts a random access response window;

[0069] A first receiver monitors a PDCCH identified by a first RNTI on the SpCell, wherein a downlink allocation indicated by the PDCCH is used to schedule a random access response;

[0070] Among them, the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH sending opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending opportunity corresponding to the first time-frequency resource; the first offset value is pre-configured; the first RNTI is a non-unicast RNTI.

[0071] The present application discloses a second node used for wireless communication, characterized in that it includes:

[0072] A second receiver receives a first random access preamble on a first time-frequency resource;

[0073] A second transmitter sends a PDCCH identified by the first RNTI on the SpCell, where the downlink allocation indicated by the PDCCH is used to schedule a random access response;

[0074] Among them, the random access response window is activated; the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH sending opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending opportunity corresponding to the first time-frequency resource; the first offset value is pre-configured; the first RNTI is a non-unicast RNTI. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0076] Figure 1 A signal processing flow chart in a first node according to an embodiment of the present application is illustrated;

[0077] Figure 2 A schematic diagram illustrating a network architecture according to an embodiment of the present application is illustrated;

[0078] Figure 3 A schematic diagram illustrating a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0079] Figure 4 A hardware module schematic diagram of a communication device according to an embodiment of the present application is illustrated;

[0080] Figure 5 An example of a wireless signal transmission flow chart according to an embodiment of the present application is provided;

[0081] Figure 6 A schematic diagram illustrating the relationship between a frame, a half frame, a subframe, a time slot and a PRACH transmission opportunity according to an embodiment of the present application is illustrated;

[0082] Figure 7 A schematic diagram illustrating a first sub-band according to an embodiment of the present application is illustrated;

[0083] Figure 8 A schematic diagram illustrating the relationship between the first subband and the downlink BWP according to an embodiment of the present application is illustrated;

[0084] Fig. 9 A schematic diagram illustrating the relationship between Q PRACH transmission opportunities and the first subband according to an embodiment of the present application is illustrated;

[0085] Fig.10 A schematic diagram illustrating a first random access preamble and a random access response according to an embodiment of the present application is illustrated;

[0086] Fig.11 An example structural block diagram of a processing device in a first node according to an embodiment of the present application is shown;

[0087] Fig.12 The structural block diagram of the processing device in the second node according to an embodiment of the present application is illustrated. DETAILED DESCRIPTION

[0088] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0089] Example 1

[0090] Embodiment 1 illustrates a signal processing flow chart in a first node according to an embodiment of the present application, as shown in the attached Figure 1 shown.

[0091] In Example 1, the first node 100 sends a first random access preamble on a first time-frequency resource in step 101; starts a random access response window in step 102; monitors a PDCCH identified by a first RNTI on SpCell in step 103, and the downlink allocation indicated by the PDCCH is used to schedule a random access response; wherein, the first RNTI depends on whether the first time-frequency resource belongs to a first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH sending timing corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending timing corresponding to the first time-frequency resource; the first offset value is pre-configured; and the first RNTI is a non-unicast RNTI.

[0092] As an embodiment, a first random access preamble is sent on a first time-frequency resource.

[0093] As an embodiment, sending a first random access preamble on a first time-frequency resource includes: sending a PRACH on the first time-frequency resource, wherein the PRACH carries the first random access preamble.

[0094] As an embodiment, the first time-frequency resource is configured by a network.

[0095] As an embodiment, the first time-frequency resource is indicated by a network.

[0096] As an embodiment, the first time-frequency resource includes at least one symbol in the time domain.

[0097] As an embodiment, one symbol is a multi-carrier symbol.

[0098] As an embodiment, a symbol is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0099] As an embodiment, one symbol is a single carrier symbol.

[0100] As an embodiment, a symbol is a DFT (Discrete Fourier Transform)-S (Spread)-OFDM symbol.

[0101] As an embodiment, a symbol is an SC (single carrier)-FDMA (frequency-division multiple access) symbol.

[0102] As an embodiment, the first time-frequency resource includes at least one subcarrier in the frequency domain.

[0103] As an embodiment, a PRACH transmission opportunity and a PRACH opportunity in the present application can be used interchangeably.

[0104] As an embodiment, the first random access preamble belongs to a random access process.

[0105] As an embodiment, the random access process is triggered by the network.

[0106] As an embodiment, the random access process is triggered by a PDCCH order (command).

[0107] As an embodiment, the random access process is triggered by an event.

[0108] As a sub-embodiment of the above embodiment, the event includes initial access from RRC (Radio Resource Control)_IDLE.

[0109] As a sub-embodiment of the above embodiment, the event includes an RRC connection re-establishment process.

[0110] As a sub-embodiment of the above embodiment, the event includes in the RRC_CONNECTED (RRC connected) state, or, in the RRC_INACTIVE (RRC inactive) state and during the SDT (Small Data Transmission) process, when downlink or uplink data arrives, the uplink synchronization state is "unsynchronized".

[0111] As a sub-embodiment of the above embodiment, the event includes SR (Scheduling Request) failure.

[0112] As a sub-embodiment of the above embodiment, the event includes an RRC request during synchronous reconfiguration (such as handover).

[0113] As a sub-embodiment of the above embodiment, the event includes beam failure recovery.

[0114] As a sub-embodiment of the above embodiment, the event includes establishing time alignment for a secondary TAG (Timing Advance Group).

[0115] As an embodiment, the first random access preamble is contention-based.

[0116] As an embodiment, the first random access preamble is contention-free.

[0117] As an embodiment, the first random access preamble is a signature sequence.

[0118] As an embodiment, the first random access preamble is a Gold sequence.

[0119] As an embodiment, the first random access preamble is an M sequence.

[0120] As an embodiment, the first random access preamble is a ZC (Zadoff–Chu) sequence.

[0121] As an embodiment, the random access response window is started after the first random access preamble is sent.

[0122] As an embodiment, the random access response window is ra-ResponseWindow (random access response window).

[0123] As an embodiment, the random access response window is msgB-ResponseWindow (message B response window).

[0124] As an embodiment, the random access response window corresponds to the first random access preamble.

[0125] As an embodiment, the random access response window is in a running state after being started; the random access response window updates the random access response window at each time interval in the running state; when the random access response window expires, the random access response window stops being updated at each time interval.

[0126] As an embodiment, when the random access response window is started, the value of the random access response window is set to 0, and the phrase updating the random access response window includes: adding 1 to the value of the random access response window; when the value of the random access response window is the expiration value of the random access response window, the random access response window expires.

[0127] As an embodiment, when the random access response window is started, the value of the random access response window is set to the expiration value of the random access response window, and the phrase for updating the random access response window includes: subtracting 1 from the value of the random access response window; when the value of the random access response window is 0, the random access response window expires.

[0128] As an embodiment, the random access response window is maintained at a MAC (Medium Access Control) sublayer of the first node.

[0129] As an embodiment, a PDCCH (Physical Downlink Control CHannel) identified by a first RNTI is monitored on the SpCell; wherein the random access response window is running.

[0130] As an embodiment, when the random access response window expires, monitoring of the PDCCH identified by the first RNTI on the SpCell is stopped.

[0131] As an embodiment, the monitoring includes searching.

[0132] As an embodiment, the monitoring includes monitoring.

[0133] As an embodiment, the phrase monitoring PDCCH includes: determining whether PDCCH exists through energy monitoring.

[0134] As an embodiment, the phrase monitoring PDCCH includes: determining whether PDCCH exists through coherent detection.

[0135] As an embodiment, the phrase monitoring PDCCH includes: determining whether PDCCH exists by maximum likelihood detection.

[0136] As an embodiment, the phrase monitoring PDCCH includes: determining whether PDCCH exists through blind decoding detection.

[0137] As an embodiment, the phrase monitoring PDCCH includes: monitoring PDCCH in CSS (Common Search Space).

[0138] As an embodiment, the PDCCH identified by the first RNTI includes: the PDCCH carries DCI (Downlink Control Information, downlink control information), and the DCI is identified by the first RNTI.

[0139] As an embodiment, the PDCCH identified by the first RNTI includes: the PDCCH carries DCI, and a CRC (Cyclic Redundancy Check) of the DCI is scrambled by the first RNTI.

[0140] As an embodiment, the downlink assignment indicated by the PDCCH is used to schedule a random access response.

[0141] As an embodiment, the downlink assignment indicated by the PDCCH is used to schedule a random access response, including: the PDCCH indicates a downlink assignment, the downlink assignment is used to transmit a MAC PDU (Protocol Data Unit), and the MAC PDU includes a random access response (Random Access Response, RAR).

[0142] As an embodiment, the downlink assignment indicated by the PDCCH is used to schedule a random access response, including: the PDCCH indicates a downlink assignment, the downlink assignment is used to transmit a MAC PDU, and the one MAC PDU is a random access response.

[0143] As an embodiment, the first RNTI is a non-unicast RNTI.

[0144] As an embodiment, the first RNTI being a non-unicast RNTI includes: the first RNTI does not uniquely identify a UE.

[0145] As an embodiment, the first RNTI being a non-unicast RNTI includes: the first RNTI does not uniquely identify the first node.

[0146] As an embodiment, the first RNTI is a non-unicast RNTI including: target recipients of the PDCCH identified by the first RNTI include multiple UEs.

[0147] As an embodiment, the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain.

[0148] As an embodiment, the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain, including: the first RNTI is related to whether the first time-frequency resource belongs to the first subband in the frequency domain.

[0149] As an embodiment, the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain, including: whether the first time-frequency resource belongs to the first subband in the frequency domain is used to determine the first RNTI.

[0150] As an embodiment, the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain, including: the value of the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain.

[0151] As an embodiment, the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain, including: the calculation of the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain.

[0152] As an embodiment, whether the first time-frequency resource belongs to the first sub-band in the frequency domain includes: whether all sub-carriers included in the first time-frequency resource in the frequency domain belong to the first sub-band.

[0153] As an embodiment, the first subband includes at least one subcarrier.

[0154] As an embodiment, the first subband includes at least one RB (Resource Block).

[0155] As an embodiment, the first subband includes at least one RB set.

[0156] As an embodiment, an RB set includes at least one RB that is continuous in the frequency domain.

[0157] As an embodiment, one RB includes 12 subcarriers.

[0158] As an embodiment, one RB is defined as 12 consecutive subcarriers in the frequency domain.

[0159] As an embodiment, when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource.

[0160] As an embodiment, the first time-frequency resource is orthogonal to the first sub-band in the frequency domain, including: the first time-frequency resource does not overlap with the first sub-band in the frequency domain.

[0161] As an embodiment, the first time-frequency resource is orthogonal to the first subband in the frequency domain, including: all subcarriers included in the first time-frequency resource in the frequency domain do not belong to the first subband.

[0162] As an embodiment, the first RNTI depends on the time domain position of the PRACH sending opportunity corresponding to the first time-frequency resource, including: the first RNTI is related to the time domain position of the PRACH sending opportunity corresponding to the first time-frequency resource.

[0163] As an embodiment, the first RNTI depends on the time domain position of the PRACH sending opportunity corresponding to the first time-frequency resource, including: the time domain position of the PRACH sending opportunity corresponding to the first time-frequency resource is used to determine the first RNTI.

[0164] As an embodiment, the PRACH sending opportunity corresponding to the first time-frequency resource includes, in the time domain, the duration of sending the first random access preamble.

[0165] As an embodiment, when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending timing corresponding to the first time-frequency resource.

[0166] As an embodiment, the first RNTI depends on the time domain position and the first offset value of the PRACH sending timing corresponding to the first time-frequency resource, including: the first RNTI is also related to the time domain position and the first offset value of the PRACH sending timing corresponding to the first time-frequency resource.

[0167] As an embodiment, the first RNTI depends on the time domain position and the first offset value of the PRACH sending timing corresponding to the first time-frequency resource, including: the time domain position and the first offset value of the PRACH sending timing corresponding to the first time-frequency resource are jointly used to determine the first RNTI.

[0168] As an embodiment, the first time-frequency resource being located in the first sub-band in the frequency domain includes: the first time-frequency resource overlapping with at least part of the frequency domain resources included in the first sub-band in the frequency domain.

[0169] As an embodiment, the first time-frequency resource being located in the first sub-band in the frequency domain includes: all sub-carriers included in the first time-frequency resource in the frequency domain belong to the first sub-band.

[0170] As an embodiment, the first offset value is pre-configured.

[0171] As an embodiment, the first offset value is preconfigured by the network.

[0172] As an embodiment, the first offset value is fixed.

[0173] As an embodiment, the first offset value is a positive integer.

[0174] As an embodiment, the first offset value is related to the number of time slots included in a frame.

[0175] As a sub-embodiment of the above embodiment, the subcarrier spacing corresponding to one frame is 120 KHz (kilohertz).

[0176] As an embodiment, the first offset value is related to the maximum number of time slots included in a frame.

[0177] As a sub-embodiment of the above embodiment, the subcarrier spacing corresponding to one frame is not greater than 120 KHz (kilohertz).

[0178] As an embodiment, the first offset value is related to the number of 120KHz time slots in a frame.

[0179] As a sub-embodiment of the above embodiment, the subcarrier spacing corresponding to one frame is greater than 120 KHz.

[0180] As a sub-embodiment of the above embodiment, the subcarrier spacing corresponding to one frame is 480 KHz or 960 KHz.

[0181] As an embodiment, a frame in the present application is a radio frame.

[0182] As an embodiment, a frame in the present application is a system frame.

[0183] As an embodiment, the number of time slots included in a frame is related to the corresponding subcarrier spacing.

[0184] As an embodiment, the subcarrier spacing is used to determine the number of time slots included in one frame.

[0185] As a sub-embodiment of the above two embodiments, when the subcarrier spacing is 2 μ×15KHz, the number of time slots included in the frame is 2 μ ×10.

[0186] As an embodiment, the value of μ is 0, 1, 2 or 3.

[0187] As an embodiment, the value of μ is 5 or 6.

[0188] As an embodiment, the value of μ is 4.

[0189] As an embodiment, the first offset value is the number of time slots included in a half frame.

[0190] As an embodiment, the first offset value is 40.

[0191] Example 2

[0192] Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the attached Figure 2 shown. Figure 2A diagram illustrating a network architecture 200 for NR 5G, LTE (Long-Term Evolution) and LTE-A (Long-Term Evolution Advanced) systems. The NR 5G, LTE or LTE-A network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 may include one or more UEs (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220 and Internet Services 230. The 5GS / EPS may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS provides packet switching services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit switching services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol terminations toward UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (Transmission Reception Point), or some other suitable term. In a NTN (Non Terrestrial Network, non-terrestrial / satellite network) network, gNB 203 may be a satellite, an aircraft, or a ground base station relayed by a satellite. gNB 203 provides an access point to 5GC / EPC 210 for UE 201.Examples of UE 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, cars, vehicle-mounted devices, vehicle-mounted communication units, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term. gNB203 is connected to 5GC / EPC210 via the S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF213. MME / AMF / SMF211 is the control node that handles signaling between UE201 and 5GC / EPC210. ​​In general, MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF212, which itself is connected to P-GW / UPF213. P-GW provides UE IP address allocation and other functions. P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-corresponding Internet protocol services, which may specifically include Internet, Intranet, IMS (IP Multimedia Subsystem) and PS (Packet Switching) streaming services.

[0193] As an embodiment, the UE201 corresponds to the first node in this application.

[0194] As an embodiment, the NR node B203 corresponds to the second node in this application.

[0195] As an embodiment, the UE 201 supports SBFD.

[0196] As an embodiment, the gNB203 supports SBFD.

[0197] As an embodiment, the gNB203 is a macro cell base station.

[0198] As an embodiment, the gNB203 is a micro cell base station.

[0199] As an embodiment, the gNB203 is a pico cell base station.

[0200] As an embodiment, the gNB203 is a home base station (Femtocell).

[0201] As an embodiment, the gNB203 is a base station device that supports large delay difference.

[0202] As an embodiment, the gNB203 is a flying platform device.

[0203] As an embodiment, the gNB203 is a satellite device.

[0204] As an embodiment, the gNB203 is a testing device (e.g., a transceiver that simulates some functions of a base station, a signaling tester).

[0205] As an embodiment, the wireless link from the UE201 to the gNB203 is an uplink, and the uplink is used to perform uplink transmission.

[0206] As an embodiment, the wireless link from the gNB203 to the UE201 is a downlink, and the downlink is used to perform downlink transmission.

[0207] As an embodiment, the UE201 and the gNB203 are respectively connected via a Uu interface.

[0208] Example 3

[0209] Embodiment 3 illustrates a schematic diagram of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application, as shown in the attached figure. Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture of the control plane 300 of the UE and gNB is shown in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to as PHY 301 in this article. Layer 2 (L2 layer) 305 is above PHY 301 and is responsible for the link between the UE and the gNB through PHY 301. The L2 layer 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. The PDCP sublayer 304 provides data encryption and integrity protection. The PDCP sublayer 304 also provides support for inter-zone mobility of UEs between gNBs. The RLC sublayer 303 provides segmentation and reassembly of data packets, and retransmission of lost data packets through ARQ. The RLC sublayer 303 also provides duplicate data packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channel identities. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between UEs. The MAC sublayer 302 is also responsible for HARQ (Hybrid Automatic Repeat Request) operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the gNB and the UE. Although not shown in the figure, a V2X layer may also be provided above the RRC sublayer 306 in the control plane 300 of the UE. The V2X layer is responsible for generating a PC5 QoS parameter group and QoS rules based on the received service data or service request, generating a PC5 QoS flow corresponding to the PC5QoS parameter group, and sending the PC5 QoS flow identifier and the corresponding PC5QoS parameter group to the AS (Access Stratum) layer for the AS layer to perform QoS processing on the data packets belonging to the PC5QoS flow identifier; the V2X layer also includes a PC5-S signaling protocol (PC5-Signaling Protocol) sublayer, and the V2X layer is responsible for indicating to the AS layer whether each transmission is a PC5-S transmission or a V2X service data transmission.The wireless protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The wireless protocol architecture in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce wireless transmission overhead. The L2 layer 355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS (Quality of Service) flows and data radio bearers (DRBs) to support the diversity of services. The wireless protocol architecture of the UE in the user plane 350 may include, at the L2 layer, a SDAP sublayer 356, a PDCP sublayer 354, a portion of or all of the protocol sublayers of the RLC sublayer 353 and the MAC sublayer 352. Although not shown, the UE may also have several upper layers above the L2 layer 355, including a network layer (e.g., an IP layer) terminated at the P-GW on the network side and an application layer terminated at the other end of the connection (e.g., a remote UE, a server, etc.).

[0210] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0211] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0212] As an embodiment, the first random access preamble in the present application is generated in the PHY301 or the PHY351.

[0213] As an embodiment, the PDCCH in the present application is generated in the PHY301 or the PHY351.

[0214] As an embodiment, the first signaling in the present application is generated in the RRC306.

[0215] As an embodiment, the second signaling in the present application is generated in the RRC306.

[0216] As an embodiment, the random access response in the present application is generated by the MAC302 or the MAC352.

[0217] As an embodiment, the random access response window in the present application is maintained in the MAC302 or the MAC352.

[0218] As an embodiment, the L2 layer 305 or 355 belongs to a higher layer.

[0219] As an embodiment, the RRC sublayer 306 in the L3 layer belongs to a higher layer.

[0220] Example 4

[0221] Embodiment 4 illustrates a hardware module schematic diagram of a communication device according to an embodiment of the present application, as shown in the attached Figure 4 shown. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0222] 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.

[0223] 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.

[0224] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, the upper layer data packets from the core network or the upper layer data packets from the data source 477 are provided to the controller / processor 475. The core network and the data source 477 represent all the protocol layers above the L2 layer. The controller / processor 475 implements the functionality of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for the retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0225] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the second communication device 410. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 for L3 processing.

[0226] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, the upper layer data packets are provided to the controller / processor 459 using the data source 467. The data source 467 represents all the protocol layers above the L2 layer. Similar to the transmission function at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0227] In the transmission from the first communication device 450 to the second communication device 410, the functions at the second communication device 410 are similar to the reception functions at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 that stores program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the first communication device 450. The upper layer data packets from the controller / processor 475 may be provided to the core network or all protocol layers above the L2 layer, and various control signals may also be provided to the core network or L3 for L3 processing.

[0228] As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor, and the first communication device 450 apparatus at least: sends a first random access preamble on a first time-frequency resource; starts a random access response window; monitors a PDCCH identified by a first RNTI on the SpCell, and the downlink allocation indicated by the PDCCH is used to schedule a random access response; wherein the first RNTI depends on whether the first time-frequency resource belongs to a first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH sending opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending opportunity corresponding to the first time-frequency resource; the first offset value is preconfigured; the first RNTI is a non-unicast RNTI.

[0229] As an embodiment, the first communication device 450 apparatus includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates actions when executed by at least one processor, the actions including: sending a first random access preamble on a first time-frequency resource; starting a random access response window; monitoring a PDCCH identified by a first RNTI on a SpCell, the downlink allocation indicated by the PDCCH being used to schedule a random access response; wherein the first RNTI depends on whether the first time-frequency resource belongs to a first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH sending timing corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending timing corresponding to the first time-frequency resource; the first offset value is pre-configured; the first RNTI is a non-unicast RNTI.

[0230] As an embodiment, the second communication device 410 device includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 410 device at least: receives a first random access preamble on a first time-frequency resource; sends a PDCCH identified by a first RNTI on the SpCell, and the downlink allocation indicated by the PDCCH is used to schedule a random access response; wherein the random access response window is activated; the first RNTI depends on whether the first time-frequency resource belongs to a first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH transmission opportunity corresponding to the first time-frequency resource; the first offset value is preconfigured; the first RNTI is a non-unicast RNTI.

[0231] As an embodiment, the second communication device 410 apparatus includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates actions when executed by at least one processor, the actions including: receiving a first random access preamble on a first time-frequency resource; sending a PDCCH identified by a first RNTI on a SpCell, and the downlink allocation indicated by the PDCCH is used to schedule a random access response; wherein the random access response window is activated; the first RNTI depends on whether the first time-frequency resource belongs to a first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH sending timing corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending timing corresponding to the first time-frequency resource; the first offset value is pre-configured; the first RNTI is a non-unicast RNTI.

[0232] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0233] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0234] As an embodiment, the first communication device 450 is a UE.

[0235] As an embodiment, the first communication device 450 is a relay.

[0236] As an embodiment, the second communication device 410 is a base station device.

[0237] As an embodiment, the second communication device 410 is a distribution unit of a base station.

[0238] As an embodiment, the second communication device 410 is a piece of code in a distributed unit of a base station.

[0239] As an embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468 or the controller / processor 459 is used to send the first random access preamble in the present application.

[0240] As an embodiment, at least one of the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470 or the controller / processor 475 is used to receive the first random access preamble in the present application.

[0241] As an embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416 or the controller / processor 475 is used to send the PDCCH in the present application.

[0242] 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 monitor the PDCCH in the present application.

[0243] As an embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416 or the controller / processor 475 is used to send the first signaling in the present application.

[0244] As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456 or the controller / processor 459 is used to receive the first signaling in the present application.

[0245] As an embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416 or the controller / processor 475 is used to send the second signaling in the present application.

[0246] As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456 or the controller / processor 459 is used to receive the second signaling in the present application.

[0247] Example 5

[0248] Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 As shown in the attached Figure 5 In the example, the first node N51 and the second node N52 communicate via a wireless interface. It should be noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0249] for First node N51 , receiving the second signaling in step S511; receiving the first signaling in step S512; sending the first random access preamble on the first time-frequency resource in step S513; starting the random access response window in step S514; monitoring the PDCCH identified by the first RNTI on the SpCell in step S515.

[0250] for Second node N52 , sending a second signaling in step S521; sending a first signaling in step S522; receiving a first random access preamble on a first time-frequency resource in step S523; and sending a PDCCH identified by a first RNTI on the SpCell in step S524.

[0251] In embodiment 5, a first random access preamble is sent on a first time-frequency resource; a random access response window is started; a PDCCH identified by a first RNTI is monitored on the SpCell, and the downlink allocation indicated by the PDCCH is used to schedule a random access response; wherein the first RNTI depends on whether the first time-frequency resource belongs to a first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH transmission opportunity corresponding to the first time-frequency resource; the first offset value is preconfigured; the first RNTI is a non-unicast RNTI; a first signaling is received, the first signaling indicating the frequency domain position of the first subband in the downlink BWP; wherein the first subband is discontinuous with the downlink subband, and the downlink subband includes the frequency domain resources for downlink reception in the downlink BWP; a second signaling is received, the second signaling indicating a time instance (time instance); wherein the Q PRACH transmission opportunities are frequency-division multiplexed in the first subband, and the Q value is one of 1, 2, 4 and 8; the PRACH transmission opportunity corresponding to the first time-frequency resource belongs to one of the Q PRACH transmission opportunities in the frequency domain; the first RNTI is RA-RNTI, or the first RNTI is MSGB-RNTI.

[0252] As an embodiment, the second node N52 is a base station maintaining a serving cell of the first node N51.

[0253] As an embodiment, the second node N52 is a Transmit / Receive Point (TRP) of a service cell of the first node N51.

[0254] As an embodiment, the second node N52 is a maintaining base station of a master cell group (MCG) of the first node N51.

[0255] As an embodiment, the second node N52 is a base station maintaining a secondary cell group (SCG) of the first node N51.

[0256] As an embodiment, the second node N52 is a MgNB (master gNB).

[0257] As an embodiment, the second node N52 is an SgNB (secondary gNB).

[0258] As an embodiment, a second signaling is received.

[0259] As an embodiment, the second signaling is high-layer signaling.

[0260] As an embodiment, the second signaling is RRC signaling.

[0261] As an embodiment, the second signaling includes all or part of an IE (Information Element) in an RRC signaling.

[0262] As an embodiment, the second signaling includes all or part of a field in an IE in an RRC signaling.

[0263] As an embodiment, the second signaling is used to configure cell specific random access parameters.

[0264] As an embodiment, the second signaling is used to configure UE specific random access parameters.

[0265] As an embodiment, the second signaling is RACH-ConfigCommon (Random Access Channel Common Configuration).

[0266] As an embodiment, the second signaling is RACH-ConfigCommonTwoStepRA (common configuration of random access channel in 2-step random access).

[0267] As an embodiment, the second signaling is RACH-ConfigGeneric (random access channel generic configuration).

[0268] As an embodiment, the second signaling is RACH-ConfigGenericTwoStepRA (generic configuration of random access channel in 2-step random access).

[0269] As an embodiment, the second signaling is RACH-ConfigDedicated (Random Access Channel Dedicated Configuration).

[0270] As an embodiment, the second signaling indication includes Q PRACH transmission opportunities in one time instance.

[0271] As an embodiment, the second signaling includes a msg1 (message 1)-FDM (frequency division multiplexing) field, and the msg1-FDM field indicates that Q PRACH transmission opportunities are included in one time instance.

[0272] As an embodiment, the second signaling includes msgA (message A)-RO (PRACH transmission occasion)-FDM field, and the msgA-RO-FDM field indicates that Q PRACH transmission occasions are included in one time instance.

[0273] As an embodiment, Q is a positive integer.

[0274] As an embodiment, the value of Q is one of 1, 2, 4 and 8.

[0275] As an embodiment, the Q PRACH transmission opportunities are frequency division multiplexed (Frequency Division Multiplexing, FDM) in the first subband.

[0276] As an embodiment, the Q PRACH transmission opportunities are continuous in the frequency domain.

[0277] As an embodiment, the starting frequency domain positions of the Q PRACH transmission opportunities are configured by the network.

[0278] As an embodiment, the second signaling includes a msg1-FrequencyStart (frequency domain start) field, and the msg1-FrequencyStart indicates the starting frequency domain position of the Q PRACH transmission opportunities.

[0279] As an embodiment, the second signaling includes a msg1-FrequencyStart field, and the msg1-FrequencyStart indicates an offset of a lowest PRACH transmission opportunity in the frequency domain among the Q PRACH transmission opportunities relative to PRB (Physical Resource Block) 0.

[0280] As an embodiment, the second signaling includes a msgA-RO-FrequencyStart field, and the msgA-RO-FrequencyStart field indicates the starting frequency domain position of the Q PRACH transmission opportunities.

[0281] As an embodiment, the second signaling includes a msgA-RO-FrequencyStart field, and the msgA-RO-FrequencyStart field indicates the offset of the lowest PRACH transmission opportunity in the frequency domain among the Q PRACH transmission opportunities relative to PRB0.

[0282] As an embodiment, a time instance includes the duration of a PRACH transmission opportunity.

[0283] As an embodiment, a time instance includes the duration of a PRACH resource.

[0284] As an embodiment, a time instance includes a duration for sending a random access preamble.

[0285] As an embodiment, a time instance is a time point at which a random access preamble is sent.

[0286] As an embodiment, a time instance is a time point of a PRACH resource.

[0287] As an embodiment, the Q frequency-division multiplexed PRACH transmission opportunities exist in the time domain for transmitting the PRACH.

[0288] As an embodiment, the duration of a time instance is related to the subcarrier spacing.

[0289] As an embodiment, the duration of a time instance corresponds one-to-one to the PRACH configuration index.

[0290] As an embodiment, the duration of a time instance is related to the format of the random access preamble, and different random access preamble formats correspond to different random access sequence lengths.

[0291] As an embodiment, when a time slot is configured with a PRACH transmission opportunity, the time slot is a PRACH time slot.

[0292] As an embodiment, the time instances included in one PRACH time slot are preconfigured.

[0293] As an embodiment, the PRACH time slots included in one subframe and the number of PRACH transmission opportunities included in one PRACH time slot are preconfigured.

[0294] As an embodiment, the duration of a time instance is preconfigured.

[0295] As an embodiment, one time instance comprises 0.5 milliseconds.

[0296] As an embodiment, the PRACH transmission opportunity corresponding to the first time-frequency resource belongs to one of the Q PRACH transmission opportunities in the frequency domain.

[0297] As an embodiment, the frequency domain resources included in the first time-frequency resources are the same as the frequency domain resources included in one of the Q PRACH transmission opportunities.

[0298] As an embodiment, a first signaling is received.

[0299] As an embodiment, the first signaling configures an uplink BWP, and the first subband is the uplink BWP.

[0300] As an embodiment, the first signaling includes part or all of the fields in BWP-UplinkDedicated (uplink specific) IE.

[0301] As an embodiment, the first signaling includes part or all of the fields in the BWP-UplinkCommon IE.

[0302] As an embodiment, the uplink BWP is an initial BWP.

[0303] As an embodiment, the uplink BWP is a default BWP.

[0304] As an embodiment, the uplink BWP is an active uplink BWP.

[0305] As an embodiment, the active uplink BWP is not a dormant BWP.

[0306] As an embodiment, the first signaling indicates the frequency domain position of the first subband in the downlink BWP.

[0307] As an embodiment, the first signaling is a higher layer signaling.

[0308] As an embodiment, the first signaling is RRC (Radio Resource Control) signaling.

[0309] As an embodiment, the first signaling includes at least one information element (IE) in RRC signaling.

[0310] As an embodiment, the first signaling includes at least one field of an information element in the RRC signaling.

[0311] As an embodiment, the first signaling is RRCReconfiguration (RRC reconfiguration).

[0312] As an embodiment, the first signaling includes part or all of the fields in the RRCReconfigurationIE.

[0313] As an embodiment, the first signaling is RRCResume (RRC recovery).

[0314] As an embodiment, the first signaling includes part or all of the fields in the RRCResume IE.

[0315] As an embodiment, the first signaling includes part or all of the fields in ServingCellConfig (serving cell configuration) IE.

[0316] As an embodiment, the first signaling includes part or all of the fields in the BWP-DownlinkDedicated (downlink specific) IE.

[0317] As an embodiment, the first signaling includes part or all of the fields in the BWP-DownlinkCommon IE.

[0318] As an embodiment, at least part of the fields in the RRCIE used to configure the downlink BWP are used to configure the first subband.

[0319] As a sub-embodiment of the above embodiment, the at least part of the domain is used to configure the first sub-band specific parameters.

[0320] As a sub-embodiment of the above embodiment, the other fields are used to configure common parameters of the downlink BWP, and the common parameters are applicable to the first sub-band.

[0321] As an embodiment, the name of the first signaling includes SBFD.

[0322] As an embodiment, the first signaling includes SBFDConfig (Sub-Band Full-Duplex Configuration).

[0323] As an embodiment, the first signaling includes SBFD-UplinkConfig (Sub-Band Full-Duplex Uplink Configuration).

[0324] As an embodiment, the first signaling explicitly indicates the frequency domain position of the first subband in the downlink BWP.

[0325] As an embodiment, the first signaling includes the frequency domain position of the first subband in the downlink BWP.

[0326] As an embodiment, the frequency domain position includes a frequency domain starting position and a bandwidth.

[0327] As an embodiment, the frequency domain position includes a frequency domain end position and a bandwidth.

[0328] As an embodiment, the frequency domain position includes a frequency domain starting position and a frequency domain ending position.

[0329] As an embodiment, the first sub-band is located within the frequency band of the downlink BWP, and the bandwidth of the first sub-band is smaller than the bandwidth of the downlink BWP.

[0330] As an embodiment, the first subband includes a plurality of RBs that are continuous in the frequency domain.

[0331] As an embodiment, the downlink BWP is an active downlink BWP.

[0332] As an embodiment, the downlink BWP is an initial BWP.

[0333] As an embodiment, the downlink BWP is a default BWP.

[0334] As an embodiment, the first RNTI is RA (random access)-RNTI.

[0335] As an embodiment, the first RNTI is MSGB (Message B)-RNTI.

[0336] As an embodiment, the second node N52 generates a random access response after receiving the first random access preamble, and schedules the sending of the random access response by indicating downlink allocation through the PDCCH identified by the first RNTI.

[0337] Example 6

[0338] Embodiment 6 illustrates a schematic diagram of the relationship between a frame, a half frame, a subframe, a time slot and a PRACH transmission opportunity according to an embodiment of the present application, as shown in the attached figure. Figure 6 The rectangular box filled with slashes indicates the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource.

[0339] As an embodiment, one frame includes 10 subframes, the frame is divided into two half frames of equal size, and each half frame includes 5 subframes.

[0340] As an embodiment, two half frames of equal size in a frame are half frame 0 and half frame 1; wherein half frame 0 includes subframes 0, 1, 2, 3, 4; and half frame 1 includes subframes 5, 6, 7, 8, 9.

[0341] As an embodiment, one subframe includes at least one time slot.

[0342] As an embodiment, the number of time slots included in a subframe is related to the subcarrier spacing.

[0343] As an embodiment, a subframe includes 2 μ time slots; 2 μ ×15KHz is the subcarrier spacing, and the value of μ is 0, 1, 2, 3, 4, 5 or 6.

[0344] As an embodiment, the time slots are numbered in increasing order in a subframe.

[0345] As a sub-embodiment of the above embodiment, when a subframe includes When there are time slots, the number of the time slots in the subframe is

[0346] As an embodiment, the time slots are numbered in increasing order in a frame.

[0347] As a sub-embodiment of the above embodiment, when a frame includes When there are time slots, the time slot number in the frame is 0.

[0348] As an embodiment, the time slots are numbered in increasing order within a half-frame.

[0349] As a sub-embodiment of the above embodiment, when a half frame includes When there are time slots, the number of the time slots in the half frame is

[0350] As an embodiment, specifically, when the subcarrier spacing is 2 μWhen ×15KHz=120KHz, μ=3, and a frame includes 80 time slots, each of the two half-frames includes 40 time slots, and a subframe includes 8 time slots; the time slots in the frame are numbered 0, 1, 2, ..., 79; the time slots in a half-frame are numbered 0, 1, 2, ..., 39, and the half-frame is half-frame 0 or half-frame 1; the time slots in the subframe are numbered 0, 1, 2, ..., 7.

[0351] As an embodiment, one PRACH time slot includes at least one PRACH transmission opportunity.

[0352] As an embodiment, the time domain starting position of a PRACH transmission opportunity is located within a PRACH time slot.

[0353] As an embodiment, the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource is indicated by the index of the first time slot of the PRACH transmission opportunity in a half frame.

[0354] As an embodiment, the index of the first time slot of the PRACH transmission opportunity corresponding to the first time-frequency resource in a half frame is used to determine the first RNTI.

[0355] As an embodiment, the first RNTI is 1+s_id+14×(t_id+first offset value)+14×80×f_id+14×80×8×ul_carrier_id; wherein the s_id is the index of the first OFDM symbol of the PRACH transmission opportunity corresponding to the first time-frequency resource, and the value range of the s_id is 0≤s_id<14; the t_id is the index of the first time slot of the PRACH transmission opportunity corresponding to the first time-frequency resource in a half frame, and the value of the t_id is The value range is 0≤t_id<40; the f_id is the index of the PRACH transmission opportunity corresponding to the first time-frequency resource in the frequency domain, and the value range of the f_id is 0≤f_id<8; the ul_carrier_id indicates the uplink carrier used for sending the first random access preamble, when the uplink carrier is NUL, the ul_carrier_id value is 0, when the uplink carrier is SUL, the ul_carrier_id value is 1; the first RNTI is RA-RNTI.

[0356] As an embodiment, the first RNTI is 1+s_id+14×(t_id+first offset value)+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×2; wherein the s_id is the index of the first OFDM symbol of the PRACH transmission opportunity corresponding to the first time-frequency resource, and the value range of the s_id is 0≤s_id<14; the t_id is the index of the first time slot of the PRACH transmission opportunity corresponding to the first time-frequency resource in a half frame, and the t The value range of _id is 0≤t_id<40; the f_id is the index of the PRACH sending opportunity corresponding to the first time-frequency resource in the frequency domain, and the value range of f_id is 0≤f_id<8; the ul_carrier_id indicates the uplink carrier used for sending the first random access preamble, when the uplink carrier is NUL, the ul_carrier_id value is 0, when the uplink carrier is SUL, the ul_carrier_id value is 1; the first RNTI is MSGB-RNTI.

[0357] As a sub-embodiment of the above two embodiments, when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first offset value is 0; when the first time-frequency resource is located in the first subband in the frequency domain, the first offset value is 40.

[0358] As an embodiment, for μ = {0, 1, 2, 3}, the subcarrier spacing for determining the t_id is based on the value of μ, and for μ = {5, 6}, the t_id is the index of the 120kHz time slot containing the PRACH opportunity in the system frame; wherein the subcarrier spacing is 2 μ ×15KHz.

[0359] In Embodiment 6, an example is taken in which a subframe includes 8 time slots, a half-frame includes 40 time slots, and the time slots in the half-frame are numbered 0, 1, 2, ..., 39 for description.

[0360] In situation A of Example 6, the PRACH sending opportunity corresponding to the first time-frequency resource is located in the third time slot in the third subframe of half-frame 0 in the time domain. Therefore, the first time slot of the PRACH sending opportunity corresponding to the first time-frequency resource is in a half-frame, that is, the index in half-frame 0 is 18.

[0361] In situation B of Example 6, the PRACH sending opportunity corresponding to the first time-frequency resource is located in the sixth time slot in the first subframe of half-frame 1 in the time domain. Therefore, the first time slot of the PRACH sending opportunity corresponding to the first time-frequency resource is in a half-frame, that is, the index in half-frame 1 is 5.

[0362] Example 7

[0363] Embodiment 7 illustrates a schematic diagram of a first sub-band according to an embodiment of the present application, as shown in the attached figure. Figure 7 Attached Figure 7 In the figure, the rectangular box filled with diagonal lines represents the first subband.

[0364] As an embodiment, the first subband is located in the downlink BWP.

[0365] As an embodiment, the first sub-band is located in the downlink BWP; and the first time-frequency resource is located in the first sub-band in the frequency domain.

[0366] As an embodiment, the first subband is located in the downlink BWP; and the first time-frequency resource is located in the uplink BWP in the frequency domain.

[0367] As a sub-embodiment of the above three embodiments, the first sub-band is configured for SBFD.

[0368] As a sub-embodiment of the above three embodiments, when the first time-frequency resource is located in the uplink BWP in the frequency domain, the first time-frequency resource is orthogonal to the first subband in the frequency domain, and the first RNTI depends on the time domain position of the PRACH sending opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH sending opportunity corresponding to the first time-frequency resource and the first offset value.

[0369] As an embodiment, the first sub-band is an uplink BWP.

[0370] As an embodiment, the first sub-band is an uplink BWP; and the first time-frequency resource is located in the first sub-band in the frequency domain.

[0371] As an embodiment, the first subband is an uplink BWP; and the first time-frequency resource is located in the downlink BWP in the frequency domain.

[0372] As a sub-embodiment of the above three embodiments, when the first time-frequency resource is located in the uplink BWP in the frequency domain, the first time-frequency resource is located in the first sub-band in the frequency domain, and the first RNTI depends on the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource and the first offset value; when the first time-frequency resource is located in the downlink BWP in the frequency domain, the first time-frequency resource is orthogonal to the first sub-band in the frequency domain, and the first RNTI depends on the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource;

[0373] As an embodiment, the uplink BWP is used for uplink transmission.

[0374] As an embodiment, the downlink BWP and the uplink BWP are independent of each other, including: a BWP identifier of the downlink BWP and a BWP identifier of the uplink BWP are configured separately.

[0375] As an embodiment, the uplink BWP and the downlink BWP are respectively configured on a service cell of the first node.

[0376] As an embodiment, the uplink BWP does not overlap with the downlink BWP.

[0377] As an embodiment, the uplink BWP is orthogonal to the downlink BWP.

[0378] As an embodiment, the uplink BWP is discontinuous with the downlink BWP.

[0379] As an embodiment, at least one RB is included between the uplink BWP and the downlink BWP.

[0380] As an embodiment, the uplink BWP and the downlink BWP respectively include multiple consecutive RBs.

[0381] In case A of embodiment 7, the first subband is the uplink BWP.

[0382] In case B of embodiment 7, the first subband is located in the downlink BWP.

[0383] As an embodiment, when the first time-frequency resource is located in the downlink BWP in the frequency domain, since the calculation method for the first RNTI in the prior art cannot identify the carrier to which the downlink BWP belongs, the calculation method for the first RNTI is missing.

[0384] As an embodiment, the present application effectively distinguishes the first RNTI when the first time-frequency resource is located in the uplink BWP and in the downlink BWP respectively through the first offset value.

[0385] Example 8

[0386] Embodiment 8 illustrates a schematic diagram of the relationship between the first subband and the downlink BWP according to an embodiment of the present application, as shown in the attached figure. Figure 8 Attached Figure 8 In the figure, the rectangular box filled with diagonal lines represents the first sub-band, and the rectangular box filled with grids represents the guard band.

[0387] As an embodiment, the first signaling implicitly indicates the frequency domain position of the first subband in the downlink BWP.

[0388] As an embodiment, the first signaling indicates the frequency domain position of the guard band, and the first node obtains the frequency domain position of the first subband according to the frequency domain position of the downlink BWP and the frequency domain position of the guard band indicated by the first signaling.

[0389] As an embodiment, the first signaling indicates the transmission direction on the first sub-band.

[0390] As an embodiment, the first signaling indicates that the transmission direction on the first subband is uplink.

[0391] As an embodiment, frequency domain resources other than the first subband in the downlink BWP are not used for uplink transmission.

[0392] As an embodiment, frequency domain resources in the downlink BWP except the first sub-band are used for a downlink sub-band and a guard band.

[0393] As an embodiment, the downlink subband includes frequency domain resources used for downlink reception in the downlink BWP.

[0394] As an embodiment, the first signaling indicates that the downlink subband in the downlink BWP is configured for downlink transmission.

[0395] As an embodiment, the first sub-band is discontinuous with the downlink sub-band.

[0396] As an embodiment, the guard band is located between the first sub-band and the downlink sub-band.

[0397] As an embodiment, the guard band in the downlink BWP is not used for wireless transmission.

[0398] As an embodiment, the first signaling indicates the subcarrier spacing (Subcarrier Spacing) of the first subband.

[0399] As an embodiment, the first subband and the downlink subband in the downlink BWP are configured with the same subcarrier spacing.

[0400] As an embodiment, the first subband and the downlink subband in the downlink BWP are configured with different subcarrier spacing.

[0401] As an embodiment, the first sub-band and the downlink sub-band in the downlink BWP are configured with different transmission directions.

[0402] As an embodiment, the center frequency of the first sub-band is the same as the center frequency of the downlink BWP.

[0403] As an embodiment, the center frequency of the first sub-band is different from the center frequency of the downlink BWP.

[0404] The downlink BWP in Embodiment 8 includes two downlink sub-bands, and the downlink sub-bands are isolated from the first sub-band by the guard band.

[0405] In case A of embodiment 8, the first sub-band is located in the middle of the downlink BWP, and the center frequency of the first sub-band is the same as the center frequency of the downlink BWP.

[0406] In case B of embodiment 8, the first sub-band is located at an upper portion of the downlink BWP, and a center frequency of the first sub-band is different from a center frequency of the downlink BWP.

[0407] Example 9

[0408] Embodiment 9 illustrates a schematic diagram of the relationship between Q PRACH transmission opportunities and the first subband according to an embodiment of the present application, as shown in the attached figure. Fig. 9 As shown, attached Fig. 9 In FIG. 1 , the rectangular box filled with diagonal lines represents the frequency domain position of the PRACH transmission opportunity.

[0409] As an embodiment, one time instance includes Q frequency-division multiplexed PRACH transmission opportunities.

[0410] As an embodiment, the Q PRACH transmission opportunities are continuous in the frequency domain.

[0411] As an embodiment, the Q PRACH transmission opportunities occupy the same bandwidth in the frequency domain.

[0412] As an embodiment, the Q PRACH transmission opportunities are numbered in ascending order starting from the lowest frequency in the first sub-band; wherein the first sub-band is an uplink BWP.

[0413] As an embodiment, the Q PRACH transmission opportunities are numbered in ascending order starting from the lowest frequency in the first subband; wherein the first subband is located in the downlink BWP.

[0414] As an embodiment, the PRACH sending opportunity corresponding to the first time-frequency resource is one of the Q PRACH sending opportunities.

[0415] In Example 9, Q=4 frequency-division multiplexed PRACH transmission opportunities are configured in the first subband, and are numbered from low to high in frequency as PRACH transmission opportunity 0, PRACH transmission opportunity 1, PRACH transmission opportunity 2, and PRACH transmission opportunity 3; the PRACH transmission opportunity corresponding to the first time-frequency resource is the PRACH transmission opportunity 0 in the frequency domain, or, the PRACH transmission opportunity corresponding to the first time-frequency resource is the PRACH transmission opportunity 1 in the frequency domain, or, the PRACH transmission opportunity corresponding to the first time-frequency resource is the PRACH transmission opportunity 2 in the frequency domain, or, the PRACH transmission opportunity corresponding to the first time-frequency resource is the PRACH transmission opportunity 3 in the frequency domain.

[0416] Example 10

[0417] Embodiment 10 illustrates a schematic diagram of a first random access preamble and a random access response according to an embodiment of the present application, as shown in the attached figure. Fig.10 shown.

[0418] As an embodiment, the start time of the random access response window is later than the end time of sending the first random access preamble.

[0419] As an embodiment, the start time of the random access response window is later than the sending end time of a PUSCH (Physical Uplink Shared CHannel) associated with the first random access preamble.

[0420] As an embodiment, the random access response window is started when the first node is configured to receive the first symbol of the earliest CORESET (Control Resource Set) of the PDCCH of the Type 1 (Type 1)-PDCCHCSS (Common Search Space) set.

[0421] As an embodiment, the random access response window is started after at least one symbol has passed since the last symbol included in the first time-frequency resource; wherein, the duration of one symbol (symbol duration) corresponds to the subcarrier spacing (SubCarrier Spacing, SCS) for the Type1-PDCCHCSS set; and the first random access preamble belongs to a 4-step random access process.

[0422] As an embodiment, the random access response window is started at least one symbol after the last symbol included in the PUSCH opportunity associated with the first random access preamble; wherein the duration of the one symbol (symbol duration) corresponds to the subcarrier spacing (SubCarrier Spacing, SCS) for the Type1-PDCCH CSS set; the first random access preamble belongs to a 2-step random access process.

[0423] As an embodiment, when the PDCCH is detected and the random access preamble identifier included in the MAC subPDU (subPDU) included in the random access response corresponds to the first random access preamble, the random access response is successfully received.

[0424] As an embodiment, the MAC sub-PDU included in the random access response includes a MAC subheader (subheader), and the MAC subheader includes a random access preamble identifier (Random Access Preamble ID, RAPID); when the random access preamble identifier indicates the first random access preamble, the random access response is successfully received.

[0425] As an embodiment, the first random access preamble is indicated by PREAMBLE_INDEX (preamble index), and when the one random access preamble identifier is the same as the PREAMBLE_INDEX, the one random access preamble identifier indicates the first random access preamble.

[0426] As an embodiment, if the random access response window expires and the random access preamble identifier matching the first random access preamble is not included in the random access response, it is considered that the random access response is received unsuccessfully.

[0427] Embodiment 11

[0428] Embodiment 11 illustrates a structural block diagram of a processing device in a first node according to an embodiment of the present application, as shown in the attached figure. Fig.11 As shown in the attached Fig.11In the embodiment, the first node processing device 1100 includes a first receiver 1101 and a first transmitter 1102; the first node 1100 is a UE.

[0429] In embodiment 11, a first transmitter 1102 sends a first random access preamble on a first time-frequency resource; a random access response window is started; a first receiver 1101 monitors a PDCCH identified by a first RNTI on a SpCell, and the downlink allocation indicated by the PDCCH is used to schedule a random access response; wherein, the first RNTI depends on whether the first time-frequency resource belongs to a first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH sending timing corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending timing corresponding to the first time-frequency resource; the first offset value is pre-configured; and the first RNTI is a non-unicast RNTI.

[0430] As an embodiment, the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource is indicated by the index of the first time slot of the PRACH transmission opportunity in a half-frame; wherein, one frame includes 10 subframes, and the one frame is divided into two half-frames of equal size, and each half-frame includes 5 subframes.

[0431] As an embodiment, the first subband is located in a downlink BWP; or, the first subband is an uplink BWP.

[0432] As an embodiment, the first subband is located in a downlink BWP; or, the first subband is an uplink BWP; the first receiver 1101 receives a first signaling, and the first signaling indicates the frequency domain position of the first subband in the downlink BWP; wherein the first subband is discontinuous with the downlink subband, and the downlink subband includes frequency domain resources in the downlink BWP for downlink reception.

[0433] As an embodiment, the first receiver 1101 receives a second signaling, wherein the second signaling indicates that a time instance includes Q PRACH transmission opportunities; wherein the Q PRACH transmission opportunities are frequency-division multiplexed in the first subband, and the value of Q is one of 1, 2, 4 and 8; and the PRACH transmission opportunity corresponding to the first time-frequency resource belongs to one of the Q PRACH transmission opportunities in the frequency domain.

[0434] As an embodiment, the first RNTI is RA-RNTI, or the first RNTI is MSGB-RNTI.

[0435] As an embodiment, when the PDCCH is detected and the random access preamble identifier included in the MAC sub-PDU included in the random access response corresponds to the first random access preamble, the random access response is successfully received.

[0436] As an embodiment, the first receiver 1101 includes the attached Figure 4 The receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 and controller / processor 459.

[0437] As an embodiment, the first receiver 1101 includes the attached Figure 4 At least one of the receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458 or controller / processor 459.

[0438] As an embodiment, the first transmitter 1102 includes the attached Figure 4 The transmitter 454 (including antenna 452), transmit processor 468, multi-antenna transmit processor 457 and controller / processor 459.

[0439] As an embodiment, the first transmitter 1102 includes the attached Figure 4 At least one of the receiver 454 (including antenna 452), transmit processor 468, multi-antenna transmit processor 457 or controller / processor 459.

[0440] Example 12

[0441] Embodiment 12 illustrates a structural block diagram of a processing device in a second node according to an embodiment of the present application, as shown in the attached figure. Fig.12 As shown in the attached Fig.12 In the embodiment, the second node processing device 1200 includes a second receiver 1201 and a second transmitter 1202; the second node 1200 is a base station or a gNB-DU.

[0442] In Example 12, a second receiver 1201 receives a first random access preamble on a first time-frequency resource; a second transmitter 1202 sends a PDCCH identified by a first RNTI on a SpCell, and the downlink allocation indicated by the PDCCH is used to schedule a random access response; wherein, a random access response window is activated; the first RNTI depends on whether the first time-frequency resource belongs to a first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH sending timing corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH sending timing corresponding to the first time-frequency resource; the first offset value is pre-configured; and the first RNTI is a non-unicast RNTI.

[0443] As an embodiment, the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource is indicated by the index of the first time slot of the PRACH transmission opportunity in a half-frame; wherein, one frame includes 10 subframes, and the one frame is divided into two half-frames of equal size, and each half-frame includes 5 subframes.

[0444] As an embodiment, the first subband is located in a downlink BWP; or, the first subband is an uplink BWP.

[0445] As an embodiment, the first subband is located in a downlink BWP; or, the first subband is an uplink BWP; the second transmitter 1202 sends a first signaling, and the first signaling indicates the frequency domain position of the first subband in the downlink BWP; wherein the first subband is discontinuous with the downlink subband, and the downlink subband includes frequency domain resources in the downlink BWP for downlink reception.

[0446] As an embodiment, the second transmitter 1202 sends a second signaling, wherein the second signaling indicates that a time instance includes Q PRACH transmission opportunities; wherein the Q PRACH transmission opportunities are frequency-division multiplexed in the first subband, and the value of Q is one of 1, 2, 4 and 8; and the PRACH transmission opportunity corresponding to the first time-frequency resource belongs to one of the Q PRACH transmission opportunities in the frequency domain.

[0447] As an embodiment, the first RNTI is RA-RNTI, or the first RNTI is MSGB-RNTI.

[0448] As an embodiment, when the PDCCH is detected and the random access preamble identifier included in the MAC sub-PDU included in the random access response corresponds to the first random access preamble, the random access response is successfully received.

[0449] As an embodiment, the second receiver 1201 includes the attached Figure 4 The receiver 418 (including antenna 420), receive processor 470, multi-antenna receive processor 472 and controller / processor 475.

[0450] As an embodiment, the second receiver 1201 includes the attached Figure 4 At least one of the receiver 418 (including the antenna 420), the receive processor 470, the multi-antenna receive processor 472 and the controller / processor 475.

[0451] As an embodiment, the second transmitter 1202 includes the attached Figure 4 The transmitter 418 (including antenna 420), transmit processor 416, multi-antenna transmit processor 471 and controller / processor 475.

[0452] As an embodiment, the second transmitter 1202 includes the attached Figure 4 At least one of the transmitter 418 (including antenna 420), the transmit processor 416, the multi-antenna transmit processor 471 or the controller / processor 475.

[0453] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The first type of communication node or UE or terminal in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC (enhanced Machine Type Communication, enhanced machine type communication) equipment, NB-IoT equipment, vehicle-mounted communication equipment, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication equipment. The second type of communication node or base station or network side equipment in the present application includes but is not limited to macrocellular base stations, microcellular base stations, home base stations, relay base stations, eNB, gNB, transmission and reception nodes TRP (Transmission and Reception Point, transmission and reception point), relay satellites, satellite base stations, aerial base stations and other wireless communication equipment.

[0454] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node used for wireless communication, characterized in that: include: A first transmitter sends a first random access preamble on a first time-frequency resource; Start random access response window; A first receiver monitors a PDCCH identified by a first RNTI on the SpCell, wherein a downlink allocation indicated by the PDCCH is used to schedule a random access response; The first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH transmission opportunity corresponding to the first time-frequency resource; The first offset value is preconfigured; and the first RNTI is a non-unicast RNTI.

2. The first node according to claim 1, characterized in that: The time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource is indicated by the index of the first time slot of the PRACH transmission opportunity in a half frame; One frame includes 10 subframes, and the frame is divided into two half frames of equal size, and each half frame includes 5 subframes.

3. The first node according to claim 1 or 2, characterized in that: The first subband is located in a downlink BWP; or, the first subband is an uplink BWP.

4. The first node according to claim 3, characterized in that: include: The first receiver receives a first signaling indicating a frequency domain position of the first subband in the downlink BWP; The first sub-band is discontinuous with the downlink sub-band, and the downlink sub-band includes frequency domain resources used for downlink reception in the downlink BWP.

5. The first node according to any one of claims 1 to 4, characterized in that: include: The first receiver receives a second signaling, where the second signaling indicates that a time instance includes Q PRACH transmission opportunities; Among them, the Q PRACH transmission opportunities are frequency-division multiplexed in the first subband, and the Q value is one of 1, 2, 4 and 8; the PRACH transmission opportunity corresponding to the first time-frequency resource belongs to one of the Q PRACH transmission opportunities in the frequency domain.

6. The first node according to any one of claims 1 to 5, characterized in that: The first RNTI is a RA-RNTI, or the first RNTI is a MSGB-RNTI.

7. The first node according to any one of claims 1 to 6, characterized in that: When the PDCCH is detected and the random access preamble identifier included in the MAC sub-PDU included in the random access response corresponds to the first random access preamble, the random access response is successfully received.

8. A second node used for wireless communication, characterized in that: include: A second receiver receives a first random access preamble on a first time-frequency resource; A second transmitter sends a PDCCH identified by the first RNTI on the SpCell, where the downlink allocation indicated by the PDCCH is used to schedule a random access response; Among them, the random access response window is activated; the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH transmission opportunity corresponding to the first time-frequency resource; The first offset value is preconfigured; and the first RNTI is a non-unicast RNTI.

9. A method in a first node for wireless communication, characterized in that: include: Sending a first random access preamble on a first time-frequency resource; Start random access response window; Monitoring a PDCCH identified by the first RNTI on the SpCell, wherein a downlink allocation indicated by the PDCCH is used to schedule a random access response; The first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH transmission opportunity corresponding to the first time-frequency resource; The first offset value is preconfigured; and the first RNTI is a non-unicast RNTI.

10. A method in a second node for wireless communication, characterized in that: include: Receiving a first random access preamble on a first time-frequency resource; Sending a PDCCH identified by the first RNTI on the SpCell, where the downlink allocation indicated by the PDCCH is used to schedule a random access response; Among them, the random access response window is activated; the first RNTI depends on whether the first time-frequency resource belongs to the first subband in the frequency domain; when the first time-frequency resource is orthogonal to the first subband in the frequency domain, the first RNTI depends on the time domain position of the PRACH transmission opportunity corresponding to the first time-frequency resource; when the first time-frequency resource is located in the first subband in the frequency domain, the first RNTI depends on the time domain position and the first offset value of the PRACH transmission opportunity corresponding to the first time-frequency resource; The first offset value is preconfigured; and the first RNTI is a non-unicast RNTI.

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