A method and apparatus in a terminal for wireless communication

Abstract

The application discloses a method and device in a terminal for wireless communication. The terminal receives a first information block, which indicates a PRACH configuration index; the terminal receives a first PDCCH, which carries a first field; the terminal sends a first PRACH; when the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, and the opportunity occupied by the first PRACH in the time domain includes at least one symbol of the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates a PRACH configuration index from the multiple PRACH configuration indexes, and the opportunity occupied by the first PRACH is the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH. The application improves the random access performance.

Description

TECHNICAL FIELD

[0001] The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission scheme and apparatus for flexible transmission direction configuration in wireless communication. BACKGROUND

[0002] The application scenarios of future wireless communication systems are increasingly diversified, and different application scenarios put forward different performance requirements for the system. In order to meet the different performance requirements of various application scenarios, it is decided at the 3GPP (3rd Generation Partnership Project) RAN (Radio Access Network) #72 plenary meeting to study New Radio (NR) (or 5G), and the New Radio (NR) WI (Work Item) is passed at the 3GPP RAN #75 plenary meeting, and the standardization work of NR is started. It is decided at the 3GPP RAN #86 plenary meeting to start the SI (Study Item) and WI (Work Item) work of NR Rel-17, and the SI and WI of NR Rel-18 are approved at the 3GPP RAN #94e plenary meeting. It is decided at the 3GPP RAN #102 plenary meeting to start the SI and WI work of NR Rel-19.

[0003] The WI supporting non-overlapping subband full duplex (SBFD) is included in NR Rel-19. Non-overlapping subband full duplex is also one of the potential technologies supported by 6G. SUMMARY

[0004] In the existing NR system, the spectrum resources are statically divided into FDD spectrum and TDD spectrum. For TDD spectrum, the base station and the user equipment work in half duplex mode. This half duplex mode avoids self-interference and can alleviate the impact of cross-link interference, but also brings the decline of resource utilization and the increase of delay. In view of these problems, it is possible to support flexible duplex mode on TDD spectrum or FDD spectrum as a possible solution.

[0005] Aiming at the random access configuration problem in the flexible duplex mode, a solution is disclosed in the present application. It should be noted that in the description of the present application, the flexible duplex mode is only taken as a typical application scenario or example; the present application is also applicable to 6G network or other scenarios facing similar problems (for example, there are scenarios where the link direction changes, or other scenarios supporting multi-level configuration of transmission direction, or scenarios with more capable base stations or user equipment, such as scenarios supporting same frequency full duplex, or for different application scenarios such as eMBB, URLLC, non-terrestrial network, integrated sensing network, intelligent metasurface, terahertz network, similar technical effects can also be achieved. In addition, adopting a unified solution for different scenarios (including but not limited to eMBB, URLLC, non-terrestrial network, integrated sensing network, intelligent metasurface, terahertz network scenarios) or different application parameters also helps to reduce hardware complexity and cost. In the case of no conflict, the embodiments of the present application used in the devices of the terminal and the features in the embodiments can be applied to the devices of the base station in the present application, and vice versa.

[0006] The present application discloses a method for use in a terminal, characterized in that it comprises:

[0007] receiving a first information block, the first information block indicating at least one PRACH configuration index;

[0008] receiving a first PDCCH, the first PDCCH carrying a first field;

[0009] sending a first PRACH, the first PDCCH triggering the sending of the first PRACH, the first PRACH carrying a random access preamble sequence;

[0010] When the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, and the opportunity occupied by the first PRACH in the time domain includes at least one symbol type, which is the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, and the opportunity occupied by the first PRACH is the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; the symbol type of one symbol depends on the configuration of full duplex.

[0011] As an embodiment, a field in PDCCH order is interpreted according to the number of PRACH configuration indexes, thereby supporting unified PDCCH order indication for different random access configurations in SBFD operation, which simplifies the design while reducing signaling overhead.

[0012] As an embodiment, whether the initiated random access is for SBFD symbols is indicated in PDCCH order, thereby enabling the network to configure random access according to interference conditions or different spatial characteristics, improving the performance of random access.

[0013] According to an aspect of the present application, the above method is characterized in that the opportunity occupied by the first PRACH is a valid PRACH opportunity, and the validity of the opportunity occupied by the first PRACH depends on that the interval length between the opportunity occupied by the first PRACH and the adjacent non-SBFD symbol in the time domain is greater than a first threshold, and the first threshold is configured or predefined and / or related to the user equipment capability.

[0014] According to an aspect of the present application, the above method is characterized in that it comprises:

[0015] receiving a second information block;

[0016] wherein the second information block indicates a target sub-band, and the validity of the opportunity occupied by the first PRACH depends on that the opportunity occupied by the first PRACH belongs to the target sub-band in the frequency domain and the frequency domain interval between the opportunity occupied by the first PRACH and at least one boundary of the target sub-band in the frequency domain is not less than a second threshold, and the second threshold is predefined or configured.

[0017] According to an aspect of the present application, the above method is characterized in that the time interval length between the first PDCCH and the first PRACH in the time domain is not less than a third threshold, and the third threshold depends on at least one of the symbol type of the symbol included by the first PDCCH in the time domain or the symbol type of the symbol included by the opportunity occupied by the first PRACH in the time domain.

[0018] According to an aspect of the present application, the above method is characterized in that the first PDCCH carries a second field, the second field carried by the first PDCCH indicates an index of a synchronization broadcast block, the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH is associated with a first opportunity set and a second opportunity set, the opportunity occupied by the first PRACH belongs to an opportunity set corresponding to the symbol type indicated by the first field carried by the first PDCCH among the first opportunity set and the second opportunity set, or the opportunity occupied by the first PRACH belongs to an opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH among the first opportunity set and the second opportunity set.

[0019] According to an aspect of the present application, the above method is characterized in that it comprises:

[0020] sending a third information block;

[0021] wherein the third information block is used to indicate at least one capability parameter of a transmitter of the third information block, and the third information block is used to determine that the first PDCCH carries the first field.

[0022] According to an aspect of the present application, the above method is characterized in that the first information block is used to determine a power boosting step, the first PDCCH is used to determine a first count value, and the power boosting step and the first count value are used together to determine a transmission power value of the first PRACH.

[0023] The present application discloses a method used in a base station, characterized in that it comprises:

[0024] sending a first information block, the first information block indicating at least one PRACH configuration index;

[0025] sending a first PDCCH, the first PDCCH carrying a first field;

[0026] receiving a first PRACH, the first PDCCH triggering transmission of the first PRACH, the first PRACH carrying a random access preamble sequence;

[0027] wherein, when the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, and the symbol type of at least one symbol included in the opportunity occupied by the first PRACH in time domain is the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, and the opportunity occupied by the first PRACH is the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; and the symbol type of one symbol depends on the configuration of full duplex.

[0028] According to an aspect of the present application, the above method is characterized in that the opportunity occupied by the first PRACH is a valid PRACH opportunity, and the validity of the opportunity occupied by the first PRACH depends on that the interval length between the opportunity occupied by the first PRACH and the adjacent non-SBFD symbol in time domain is greater than a first threshold value, and the first threshold value is configured or predefined and / or related to the user equipment capability.

[0029] According to an aspect of the present application, the above method is characterized in that it comprises:

[0030] sending a second information block;

[0031] wherein, the second information block indicates a target sub-band, and the validity of the opportunity occupied by the first PRACH depends on that the opportunity occupied by the first PRACH belongs to the target sub-band in frequency domain and the frequency domain interval between the opportunity occupied by the first PRACH and at least one boundary of the target sub-band in frequency domain is not less than a second threshold value, and the second threshold value is predefined or configured.

[0032] According to an aspect of the present application, the above method is characterized in that the time interval length between the first PDCCH and the first PRACH in time domain is not less than a third threshold value, and the third threshold value depends on at least one of the symbol type of the symbol included in the first PDCCH in time domain or the symbol type of the symbol included in the opportunity occupied by the first PRACH in time domain.

[0033] According to an aspect of the present application, the method is characterized in that the first PDCCH carries a second field, the second field carried by the first PDCCH indicates an index of a synchronization broadcast block, the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH is associated with a first opportunity set and a second opportunity set, the opportunity occupied by the first PRACH belongs to an opportunity set corresponding to the symbol type indicated by the first field carried by the first PDCCH among the first opportunity set and the second opportunity set, or the opportunity occupied by the first PRACH belongs to an opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH among the first opportunity set and the second opportunity set.

[0034] According to an aspect of the present application, the method is characterized in that the method comprises:

[0035] receiving a third information block;

[0036] The third information block is used to indicate at least one capability parameter of a transmitter of the third information block, and the third information block is used to determine that the first PDCCH carries the first field.

[0037] According to an aspect of the present application, the method is characterized in that the first information block is used to determine a power boosting step, the first PDCCH is used to determine a first count value, and the power boosting step and the first count value are used together to determine a transmission power value of the first PRACH.

[0038] The present application discloses a terminal, characterized in that comprising:

[0039] a first receiver, configured to receive a first information block, the first information block indicating at least one PRACH configuration index;

[0040] The first receiver receives a first PDCCH, and the first PDCCH carries a first field.

[0041] a first transmitter, configured to transmit a first PRACH, the first PDCCH triggering transmission of the first PRACH, and the first PRACH carrying a random access preamble sequence;

[0042] When the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, and the symbol type of at least one symbol included in the opportunity occupied by the first PRACH in the time domain is the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, and the opportunity occupied by the first PRACH is the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; and the symbol type of one symbol depends on the configuration of full duplex.

[0043] The application discloses a base station, characterized in that comprising:

[0044] The second transmitter transmits a first information block, and the first information block indicates at least one PRACH configuration index;

[0045] The second transmitter transmits a first PDCCH, and the first PDCCH carries a first field;

[0046] The second receiver receives a first PRACH, and the first PDCCH triggers transmission of the first PRACH, and the first PRACH carries a random access preamble sequence;

[0047] When the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, and the symbol type of at least one symbol included in the opportunity occupied by the first PRACH in the time domain is the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, and the opportunity occupied by the first PRACH is the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; and the symbol type of one symbol depends on the configuration of full duplex. BRIEF DESCRIPTION OF DRAWINGS

[0048] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments thereof, read in conjunction with the accompanying drawings:

[0049] Figure 1 A flowchart of a first information block, a first PDCCH, and a first PRACH according to one embodiment of the application is shown;

[0050] Figure 2 A diagram illustrating a network architecture according to an embodiment of the present application is shown;

[0051] Figure 3 A diagram illustrating a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application is shown;

[0052] Figure 4 A diagram illustrating a terminal device and a base station device according to an embodiment of the present application is shown;

[0053] Figure 5 A flowchart illustrating a wireless signal transmission according to an embodiment of the present application is shown;

[0054] Figure 6 A diagram illustrating a first threshold according to an embodiment of the present application is shown;

[0055] Figure 7 A diagram illustrating a second threshold according to an embodiment of the present application is shown;

[0056] Figure 8 A diagram illustrating a third threshold according to an embodiment of the present application is shown;

[0057] Figure 9 A diagram illustrating a first set of opportunities and a second set of opportunities according to an embodiment of the present application is shown;

[0058] Figure 10 A diagram illustrating a first domain according to an embodiment of the present application is shown;

[0059] Figure 11 A diagram illustrating a power boost step according to an embodiment of the present application is shown;

[0060] Figure 12 A block diagram illustrating a structure of a processing device in a terminal device according to an embodiment of the present application is shown;

[0061] Figure 13 A block diagram illustrating a structure of a processing device in a base station device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0062] The technical solutions of the present application will be further described below in conjunction with the accompanying drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0063] Example 1

[0064] Embodiment 1 illustrates a flowchart 100 of a first information block, a first PDCCH and a first PRACH according to an embodiment of the present application, as shown in FIG. 1.Figure 1 The figure shows an example of a method according to the present application. In the figure, each block represents a step. It is particularly emphasized that the order of the blocks in the figure does not limit the temporal order between the steps represented. Figure 1 The figure shows an example of a method according to the present application. In the figure, each block represents a step. It is particularly emphasized that the order of the blocks in the figure does not limit the temporal order between the steps represented.

[0065] In embodiment 1, the terminal device in the present application receives a first information block in step 101, the first information block indicates at least one PRACH configuration index; the terminal device in the present application receives a first PDCCH in step 102, the first PDCCH carries a first field; the terminal device in the present application sends a first PRACH in step 103, the first PDCCH triggers the sending of the first PRACH, the first PRACH carries a random access preamble sequence; wherein when the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, the symbol type of the opportunity occupied by the first PRACH in the time domain includes at least one symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, the opportunity occupied by the first PRACH is the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; the symbol type of one symbol depends on the configuration of full duplex.

[0066] As an embodiment, the first information block is transmitted through an air interface or a wireless interface.

[0067] As an embodiment, the first information block includes all or part of a high layer signaling or a physical layer signaling.

[0068] As an embodiment, the first information block includes all or part of a RRC (Radio Resource Control) layer signaling, or the first information block includes all or part of a MAC (Medium Access Control) layer signaling.

[0069] As an embodiment, the first information block includes all or part of a system information block (SIB).

[0070] As an embodiment, the first information block is UE-specific, or the first information block is cell-specific.

[0071] As one embodiment, the first information block is per cell configured.

[0072] As one embodiment, the first information block is per cell configured.

[0073] As one embodiment, the first information block is per cell configured.

[0074] As one embodiment, the first information block is per cell group or per cell list configured.

[0075] As one embodiment, the first information block is per subband. As one subembodiment of the above, configuring the first information block per subband can improve the flexibility of PRACH opportunity configuration in full duplex scenario.

[0076] As one embodiment, the first information block is per carrier. As one subembodiment of the above, per carrier configuration can reduce complexity.

[0077] As one embodiment, the first information block is per BWP (bandwidth Part). As one subembodiment of the above, per BWP configuration can reuse existing design and reduce standardization work.

[0078] As one embodiment, the first information block includes part or all of the fields in IE “RACH-ConfigDedicated”.

[0079] As one embodiment, the first information block includes field “CFRA” or field “CFRA-TwoStep-r16”.

[0080] As one embodiment, the first information block includes field “msg1-FDM” or field “msgA-RO-FDM-r16”.

[0081] As one embodiment, the first information block includes part or all of the fields in IE “rach-ConfigGeneric”.

[0082] As one embodiment, the first information block includes part or all of the fields in IE “SI-RequestConfig”.

[0083] As one embodiment, the first information block includes part or all of the fields in IE “RACH-ConfigCommon”.

[0084] As one embodiment, the first information block comprises some or all fields in the IE "BWP-UplinkCommon".

[0085] As one embodiment, the first information block comprises some or all fields in the IE "ServingCellConfigCommon".

[0086] As one embodiment, the first information block comprises some or all fields in the IE "RACH-ConfigGenericTwoStepRA".

[0087] As one embodiment, the first information block comprises some or all fields in the IE "ServingCellConfig".

[0088] As one embodiment, the first information block comprises some or all fields in the IE "RACH-ConfigCommonTwoStepRA".

[0089] As one embodiment, the first information block comprises some or all fields in one DCI format. As one dependent embodiment of the above embodiment, the first information block comprises DCI can provide more flexibility.

[0090] As one embodiment, the first information block is transmitted on PDCCH (physical downlink control channel).

[0091] As one embodiment, a PRACH configuration index indicated by the first information block is an index in a random access configuration table.

[0092] As one embodiment, a PRACH configuration index indicated by the first information block is a row index in a random access configuration table.

[0093] As one embodiment, a PRACH configuration index indicated by the first information block is an index in a random access configuration table for frequency range 1 (FR1) and unpaired spectrum.

[0094] As an embodiment, the PRACH configuration index indicated by the first information block is an index in a random access configuration table for frequency range 1 (FR1) and supplemental uplink.

[0095] As an embodiment, the PRACH configuration index indicated by the first information block is an index in a random access configuration table for frequency range 2 (FR2) and unpaired spectrum.

[0096] As an embodiment, the PRACH configuration index indicated by the first information block is an index of a random access configuration combination in a plurality of random access configuration combinations, each of the plurality of random access configuration combinations comprising a preamble format, a distribution of frames, a subframe number, a starting symbol, a number of PRACH slots in a subframe, a number of time domain PRACH opportunities in a PRACH slot, and a PRACH duration.

[0097] As an embodiment, “the first information block indicates at least one PRACH configuration index” comprises that all or part of the first information block explicitly or implicitly indicates at least one PRACH configuration index.

[0098] As an embodiment, “the first information block indicates at least one PRACH configuration index” comprises that the first information block indicates one or more PRACH configuration indexes.

[0099] As an embodiment, “the first information block indicates at least one PRACH configuration index” comprises that the first information block indicates one or two PRACH configuration indexes.

[0100] As an embodiment, the first PDCCH is a baseband signal of a PDCCH (physical downlink control channel).

[0101] As an embodiment, the first PDCCH is a radio frequency signal of a PDCCH.

[0102] As an embodiment, the first PDCCH is a PDCCH order.

[0103] As one embodiment, the first PDCCH carries DCI (downlink control information) used for PDCCH order.

[0104] As one embodiment, the first PDCCH carries all or part of the fields in DCI format 1_0.

[0105] As one embodiment, DCI format 1_0 is used to generate the first PDCCH.

[0106] As one embodiment, the value of the frequency domain resource assignment field included in the DCI carried by the first PDCCH is equal to all "1".

[0107] As one embodiment, the bits of the frequency domain resource assignment field included in the DCI carried by the first PDCCH are all set to "1".

[0108] As one embodiment, the CRC of the DCI format of the DCI carried by the first PDCCH is scrambled by C-RNTI (Cell-Radio Network Temporary Identifier).

[0109] As one embodiment, the PDCCH candidate occupied by the first PDCCH belongs to a common search space (CSS) set.

[0110] As one embodiment, the PDCCH candidate occupied by the first PDCCH belongs to a user equipment specific search space (USS) set.

[0111] As one embodiment, the technical feature "the first PDCCH carries a first field" includes the following meaning: the format used by the DCI carried by the first PDCCH includes the first field.

[0112] As one embodiment, the technical feature "the first PDCCH carries a first field" includes the following meaning: the DCI including the first field is transmitted on the first PDCCH.

[0113] As an embodiment, the technical feature "the first PDCCH carries a first field" includes the following meaning: a DCI including the first field is mapped onto the first PDCCH.

[0114] As an embodiment, the technical feature "the first PDCCH carries a first field" includes the following meaning: a DCI including the first field is used to generate the first PDCCH.

[0115] As an embodiment, the technical feature "the first PDCCH carries a first field" includes the following meaning: the first field occupies bits in information bits of a DCI carried by the first PDCCH.

[0116] As an embodiment, the first field is a SBFD symbol indicator.

[0117] As an embodiment, the first field is a configuration type indicator.

[0118] As an embodiment, the first field is a configuration index type indicator.

[0119] As an embodiment, the first field is a re-interpretation of a legacy field.

[0120] As an embodiment, the first field is a re-interpretation of a reserved bit.

[0121] As an embodiment, the first field occupies at least 1 reserved bit in a DCI format including the first field.

[0122] As an embodiment, for a PDCCH order other than a SBFD operation, any bit occupied by the first field is a reserved bit.

[0123] As an embodiment, the first information block is used to determine that at least 1 reserved bit in a DCI carried by the first PDCCH is used as the first field.

[0124] As an embodiment, an information block other than the first information block is used to determine that at least 1 reserved bit in a DCI carried by the first PDCCH is used as the first field.

[0125] As an embodiment, at least one capability parameter reported by the terminal device is used to determine that at least one reserved bit in DCI carried by the first PDCCH is used as the first field.

[0126] As an embodiment, at least one capability parameter reported by the terminal device is used to determine that at least one reserved bit in DCI carried by the first PDCCH is used as the first field together with the first information block.

[0127] As an embodiment, the first PRACH (physical random access channel) is a radio frequency signal or a baseband signal of the PRACH.

[0128] As an embodiment, the first PRACH is used for a random access procedure.

[0129] As an embodiment, the first PRACH is used for an LTM (L1 / L2-triggered mobility) procedure.

[0130] As an embodiment, the technical feature “the first PDCCH is used to trigger transmission of the first PRACH” includes the following meaning: the first PDCCH is used to explicitly or implicitly indicate resources occupied by the PRACH.

[0131] As an embodiment, the technical feature “the first PDCCH is used to trigger transmission of the PRACH” includes the following meaning: the first PDCCH is used to explicitly or implicitly indicate a random access preamble sequence carried by the first PRACH.

[0132] As an embodiment, the technical feature “the first PDCCH is used to trigger transmission of the first PRACH” includes the following meaning: the first PDCCH is used to explicitly or implicitly indicate an index of an SS / PBCH associated with the first PRACH.

[0133] As an embodiment, the technical feature “the first PDCCH is used to trigger transmission of the first PRACH” includes the following meaning: the first PDCCH is used by a transmitter of the first PDCCH in this application to trigger / initiate transmission of the first PRACH.

[0134] As an embodiment, the technical feature "the first PDCCH is used to trigger transmission of the first PRACH" comprises the following meaning: the first PDCCH is used to explicitly or implicitly configure or schedule at least one parameter of the first PRACH.

[0135] As an embodiment, the technical feature "the first PDCCH is used to trigger transmission of the first PRACH" comprises the following meaning: the transmission of the first PRACH is a response to the first PDCCH.

[0136] As an embodiment, the technical feature "the first PDCCH is used to trigger transmission of the first PRACH" comprises the following meaning: the first PDCCH is used to explicitly or implicitly indicate the terminal device to transmit the first PRACH.

[0137] As an embodiment, the technical feature "the first PRACH carries a random access preamble sequence" comprises the following meaning: the first PRACH is used for transmission of a random access preamble sequence.

[0138] As an embodiment, the technical feature "the first PRACH carries a random access preamble sequence" comprises the following meaning: a random access preamble sequence is transmitted on the first PRACH.

[0139] As an embodiment, the technical feature "the first PRACH carries a random access preamble sequence" comprises the following meaning: a random access preamble sequence is used to generate the first PRACH.

[0140] As an embodiment, the technical feature "the first PRACH carries a random access preamble sequence" comprises the following meaning: a random access preamble sequence is mapped onto physical resources allocated to the first PRACH.

[0141] As an embodiment, a Zadoff-Chu (ZC) sequence is used to generate the random access preamble sequence carried by the first PRACH.

[0142] As an embodiment, a pseudo-random sequence is used to generate the random access preamble sequence carried by the first PRACH.

[0143] As an embodiment, the random access preamble sequence carried by the first PRACH adopts preamble sequence format 0.

[0144] As an embodiment, the random access preamble sequence carried by the first PRACH adopts preamble sequence format 1.

[0145] As one embodiment, the random access preamble sequence carried by the first PRACH adopts preamble sequence format 2.

[0146] As one embodiment, the random access preamble sequence carried by the first PRACH adopts preamble sequence format 3.

[0147] As one embodiment, the random access preamble sequence carried by the first PRACH adopts one of preamble sequence formats A1, A2, A3, B1, B2, B3, B4, C0, C2.

[0148] As one embodiment, the preamble sequence format adopted by the random access preamble sequence carried by the first PRACH is configured by the first information block.

[0149] As one embodiment, the sequence length of the random access preamble sequence carried by the first PRACH is equal to 139 or 571 or 839 or 1151.

[0150] As one embodiment, “when the first information block indicates only one PRACH configuration index” includes when only an indication of one PRACH configuration index is included in the first information block.

[0151] As one embodiment, “when the first information block indicates only one PRACH configuration index” includes when the first information block further indicates information other than the PRACH configuration index, but for the PRACH configuration index, the first information block only indicates one.

[0152] As one embodiment, the number of possible symbol types of one symbol is equal to 2.

[0153] As one embodiment, the number of possible symbol types of one symbol is greater than 2.

[0154] As an embodiment, the symbol type of a symbol is one of T1 symbol types, T1 being a positive integer greater than 1, the T1 symbol types being predefined or configurable. As an embodiment dependent on the above embodiment, the T1 symbol types include SBFD symbols and non-SBFD symbols. As an embodiment dependent on the above embodiment, the T1 symbol types include SBFD symbols and symbols indicated as uplink by “tdd-UL-DL-ConfigCommon”. As an embodiment dependent on the above embodiment, the T1 symbol types include SBFD symbols indicated as downlink by “tdd-UL-DL-ConfigCommon” and other types of symbols; as an embodiment dependent on the above embodiment, the T1 symbol types include SBFD symbols indicated as downlink by “tdd-UL-DL-ConfigCommon”, SBFD symbols indicated as flexible by “tdd-UL-DL-ConfigCommon”, symbols indicated as uplink by “tdd-UL-DL-ConfigCommon”, non-SBFD symbols indicated as flexible by “tdd-UL-DL-ConfigCommon”; as an embodiment dependent on the above embodiment, the T1 symbol types include SBFD symbols indicated as downlink by “tdd-UL-DL-ConfigCommon” and symbols indicated as uplink or flexible by “tdd-UL-DL-ConfigCommon”; as an embodiment dependent on the above embodiment, the T1 symbol types include symbols whose subbands are configured in time domain for SBFD and symbols whose subbands are not configured in time domain for SBFD. As an embodiment dependent on the above embodiment, the T1 symbol types are symbols respectively corresponding to T1 TCI states. As an embodiment dependent on the above embodiment, the T1 symbol types are symbols respectively corresponding to T1 radio frequency chains. As an embodiment dependent on the above embodiment, the T1 symbol types are symbols respectively corresponding to T1 beams. As an embodiment dependent on the above embodiment, the T1 symbol types are symbols respectively corresponding to T1 interference cancellation schemes. As an embodiment dependent on the above embodiment, the T1 symbol types are symbols respectively corresponding to T1 QCL relationships. As an embodiment dependent on the above embodiment, T1 is equal to 2. As an embodiment dependent on the above embodiment, T1 is greater than 2. As an embodiment dependent on the above embodiment, the T1 symbol types depend on the capability of the terminal. As an embodiment dependent on the above embodiment, the terminal cannot be considered to have the same QCL parameters (or QCL assumptions) in two time domain symbols respectively belonging to different symbol types among the T1 symbol types.

[0155] As one embodiment, a symbol type of a symbol is one of a plurality of symbol types.

[0156] As one embodiment, a symbol type of a symbol is an SBFD symbol or a non-SBFD symbol.

[0157] As one embodiment, a symbol type of a symbol is a symbol configured with SBFD or a symbol not configured with SBFD.

[0158] As one embodiment, a symbol type of a symbol is a symbol in an SBFD slot or a symbol in a non-SBFD slot.

[0159] As one embodiment, a symbol type of a symbol is a symbol configured with SBFD subbands in time domain or a symbol not configured with SBFD subbands in time domain.

[0160] As one embodiment, a symbol type of a symbol is a time domain symbol supporting full duplex or a symbol not supporting full duplex.

[0161] As one embodiment, a symbol type of a symbol is a symbol applicable to SBFD or a symbol not applicable to SBFD.

[0162] As one embodiment, a symbol type of a symbol is a symbol capable of being used for both uplink transmission and downlink transmission or a symbol incapable of being used for both uplink transmission and downlink transmission.

[0163] As one embodiment, a symbol type of a symbol is an SBFD symbol indicated as downlink by “tdd-UL-DL-ConfigCommon” or another type of symbol.

[0164] As one embodiment, a symbol type of a symbol is one of an SBFD symbol indicated as downlink by “tdd-UL-DL-ConfigCommon”, an SBFD symbol indicated as flexible by “tdd-UL-DL-ConfigCommon”, a symbol indicated as uplink by “tdd-UL-DL-ConfigCommon”, and a non-SBFD symbol indicated as flexible by “tdd-UL-DL-ConfigCommon”.

[0165] As one embodiment, a symbol type of a symbol is an SBFD symbol indicated as downlink by “tdd-UL-DL-ConfigCommon” or a symbol indicated as uplink or flexible by “tdd-UL-DL-ConfigCommon”.

[0166] As one embodiment, an extended configuration flexibility is considered for downlink and flexible symbols.

[0167] As an embodiment, only downlink symbols are considered, which simplifies the system design.

[0168] As an embodiment, the first domain carried by the first PDCCH indicates a symbol type includes that all bits or part of bits in the first domain carried by the first PDCCH explicitly or implicitly indicate a symbol type.

[0169] As an embodiment, the first domain carried by the first PDCCH indicates a symbol type includes that the first domain carried by the first PDCCH indicates a symbol type from multiple candidate symbol types.

[0170] As an embodiment, the first domain carried by the first PDCCH indicates a symbol type includes that the first domain carried by the first PDCCH indicates a symbol type of a symbol included by a RO (RA occasion) in a time domain.

[0171] As an embodiment, the first domain carried by the first PDCCH indicates a symbol type includes that the first domain carried by the first PDCCH indicates whether a random access to which a RO (RA occasion) in a time domain is directed is a random access on a SBFD symbol or a random access on a non-SBFD symbol.

[0172] As an embodiment, the opportunity occupied by the first PRACH is an opportunity (occasion) occupied or mapped by the first PRACH in a time-frequency domain.

[0173] As an embodiment, the opportunity occupied by the first PRACH is a PRACH opportunity (occasion).

[0174] As an embodiment, the opportunity occupied by the first PRACH is a RO (RACH Occasion).

[0175] As an embodiment, the opportunity occupied by the first PRACH is an opportunity (occasion) including time-frequency resources occupied or mapped by the first PRACH.

[0176] As an embodiment, a symbol type of the opportunity occupied by the first PRACH in a time domain includes at least one symbol is a symbol type of the opportunity occupied by the first PRACH in a time domain including all symbols.

[0177] As an embodiment, the symbol type of the occasion occupied by the first PRACH in time domain is a partial symbol.

[0178] As an embodiment, the first PDCCH carries the first field to explicitly or implicitly indicate one PRACH configuration index from the plurality of PRACH configuration indexes.

[0179] As an embodiment, the first PDCCH carries the first field to explicitly or implicitly indicate one PRACH configuration index from the plurality of PRACH configuration indexes.

[0180] As an embodiment, the occasion indicated by the PRACH configuration index indicated by the first PDCCH carried by the first PDCCH is an occasion of a plurality of periodic occasions indicated or configured by the PRACH configuration index indicated by the first PDCCH carried by the first PDCCH.

[0181] As an embodiment, the PRACH configuration index indicated by the first PDCCH carried by the first PDCCH indicates a random access configuration combination including preamble format, distribution of frames, subframe number, starting symbol, number of PRACH slots in a subframe, number of time domain PRACH occasions in a PRACH slot and PRACH duration, and the occasion indicated by the PRACH configuration index indicated by the first PDCCH carried by the first PDCCH is an occasion included or indicated or configured by the random access combination.

[0182] As an embodiment, the PRACH configuration index indicated by the first PDCCH carried by the first PDCCH indicates a random access configuration combination including preamble format, distribution of frames, subframe number, starting symbol, number of PRACH slots in a subframe, number of time domain PRACH occasions in a PRACH slot and PRACH duration, and the occasion indicated by the PRACH configuration index indicated by the first PDCCH carried by the first PDCCH is an occasion that is compliant with the distribution of frames, subframe number, starting symbol, number of PRACH slots in a subframe, number of time domain PRACH occasions in a PRACH slot and PRACH duration included by the random access combination.

[0183] As one embodiment, "the opportunity occupied by the first PRACH is an opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH" comprises that the opportunity occupied by the first PRACH is one of multiple opportunities indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH.

[0184] As one embodiment, "the opportunity occupied by the first PRACH is an opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH" comprises that the opportunity occupied by the first PRACH is a random access configuration combination indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH, the random access configuration combination comprising a preamble format, a distribution of frames, a subframe number, a starting symbol, a number of PRACH slots in one subframe, a number of time domain PRACH opportunities in one PRACH slot and a PRACH duration.

[0185] As one embodiment, "the opportunity occupied by the first PRACH is an opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH" comprises that the PRACH configuration index indicated by the first field carried by the first PDCCH is used to determine the opportunity occupied by the first PRACH.

[0186] As one embodiment, "the opportunity occupied by the first PRACH is an opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH" comprises that the opportunity occupied by the first PRACH depends on the PRACH configuration index indicated by the first field carried by the first PDCCH.

[0187] As one embodiment, the configuration of the full duplex comprises a configuration of SBFD.

[0188] As one embodiment, the configuration of the full duplex comprises a configuration of SBFD symbols.

[0189] As one embodiment, the configuration of the full duplex comprises a configuration of uplink sub-bands.

[0190] As one embodiment, the configuration of the full duplex comprises a configuration of a distribution of time domain of uplink sub-bands.

[0191] As one embodiment, the configuration of the full duplex comprises indicating which symbols are SBFD symbols.

[0192] As one embodiment, "the symbol type of a symbol depends on the configuration of full duplex" includes that the configuration of full duplex is used to determine the symbol type of a symbol.

[0193] As one embodiment, "the symbol type of a symbol depends on the configuration of full duplex" includes that the symbol type of any symbol depends on the configuration of full duplex.

[0194] As one embodiment, "the symbol type of a symbol depends on the configuration of full duplex" includes that whether a symbol is an SBFD symbol depends on the configuration of full duplex.

[0195] As one embodiment, "the symbol type of a symbol depends on the configuration of full duplex" includes that whether a symbol is an SBFD symbol indicated by TDD uplink-downlink configuration as downlink depends on the configuration of full duplex.

[0196] As one embodiment, "the symbol type of a symbol depends on the configuration of full duplex" includes that whether a symbol is an SBFD symbol indicated by TDD uplink-downlink configuration as downlink or an SBFD symbol indicated by TDD uplink-downlink configuration as flexible or a non-SBFD symbol depends on the configuration of full duplex.

[0197] As one embodiment, "the symbol type of a symbol depends on the configuration of full duplex" includes that the configuration of full duplex explicitly or implicitly indicates the symbol type of a symbol.

[0198] As one embodiment, "the symbol type of a symbol depends on the configuration of full duplex" includes that the configuration of full duplex indicates at least one symbol is an SBFD symbol.

[0199] As one embodiment, "the symbol type of a symbol depends on the configuration of full duplex" includes that the configuration of full duplex indicates at least one symbol is an SBFD symbol from a time window.

[0200] As one embodiment, "the symbol type of a symbol depends on the configuration of full duplex" includes that a symbol overlapping in time domain with a symbol indicated (or provided) by the configuration of full duplex is an SBFD symbol.

[0201] As one embodiment, "the symbol type of a symbol depends on the configuration of full duplex" includes that a symbol indicated by tdd-UL-DL-ConfigCommon as downlink overlapping with an SBFD symbol indicated by the configuration of full duplex is a type of symbol, a symbol indicated by tdd-UL-DL-ConfigCommon as flexible overlapping with an SBFD symbol indicated by the configuration of full duplex is another type of symbol, and a symbol without overlapping with an SBFD symbol indicated by the configuration of full duplex is a third type of symbol.

[0202] As one embodiment, the "symbol type of a symbol depends on a configuration of full duplex" comprises: the configuration of full duplex indicates at least 1 symbol according to a reference subcarrier spacing, any 1 time-domain symbol of the configuration of full duplex indicated as downlink by tdd-UL-DL-ConfigCommon and the symbol indicated by the configuration of full duplex are overlapped is a SBFD symbol, the reference subcarrier spacing is predefined or is signaling configured. As one subsidiary embodiment of the above embodiment, the reference subcarrier spacing is predefined refers to that the reference subcarrier spacing is fixed. As one subsidiary embodiment of the above embodiment, the reference subcarrier spacing is predefined refers to that the reference subcarrier spacing is related to a frequency range (FR, frequency range). As one subsidiary embodiment of the above embodiment, the reference subcarrier spacing is predefined refers to that the reference subcarrier spacing is related to a band index. As one subsidiary embodiment of the above embodiment, the reference subcarrier spacing is predefined refers to that the reference subcarrier spacing is equal to the subcarrier spacing of an initial downlink BWP (Bandwidth Part, bandwidth part). As one subsidiary embodiment of the above embodiment, the reference subcarrier spacing is predefined refers to that the reference subcarrier spacing is equal to the subcarrier spacing of an initial uplink BWP (Bandwidth Part, bandwidth part).

[0203] As one embodiment, the "symbol type of a symbol depends on a configuration of full duplex" comprises: the configuration of full duplex includes a SLIV, the starting SBFD symbol in a periodic time window and the number of included consecutive symbols are used to generate the SLIV included in the configuration of full duplex.

[0204] As one embodiment, the "symbol type of a symbol depends on a configuration of full duplex" comprises: the configuration of full duplex includes a SLIV, the starting SBFD symbol in a periodic time window and the number of included consecutive symbols are used to generate the SLIV included in the configuration of full duplex, the SBFD symbol in the included consecutive symbols and the downlink indicated by tdd-UL-DL-ConfigCommon is a type of symbol, the SBFD symbol in the included consecutive symbols and the flexible indicated by tdd-UL-DL-ConfigCommon is a type of symbol, the SBFD symbol in the included consecutive symbols and the uplink indicated by tdd-UL-DL-ConfigCommon and the symbol outside the included consecutive symbols is a third type of symbol.

[0205] As an embodiment, "the symbol type of a symbol depends on the configuration of full duplex" includes: the full duplex configuration includes a SLIV, the number of starting SBFD symbols in a period time window and included consecutive symbols are used to generate the SLIV included by the full duplex configuration, the SBFD symbols which are overlapped with downlink indicated by tdd-UL-DL-ConfigCommon in the included consecutive symbols are one type of symbols, and all the other symbols are another type of symbols.

[0206] As an embodiment, the symbol type of a symbol further depends on the TDD uplink-downlink configuration.

[0207] Example 2

[0208] Embodiment 2 shows a schematic diagram of a network architecture according to the present application, as shown in FIG. 2. FIG. 2 shows a schematic diagram of a network architecture according to the present application. Figure 2 As shown in FIG. 2, the network architecture includes a base station 200 and a terminal 202. The base station 200 is connected to the terminal 202 through a wireless channel. The base station 200 includes a processor 210, a memory 220 and a transceiver 230. The processor 210 is connected to the memory 220 and the transceiver 230. The memory 220 is configured to store instructions. The transceiver 230 is configured to receive and send data. The processor 210 is configured to execute the instructions stored in the memory 220 to perform the method of the present application. Figure 2A diagram illustrating a network architecture 200 for 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems is shown. The 5G NR or LTE network architecture 200 can be referred to as a 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 can include one or more UEs (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network, 5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. The 5GS / EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown, the 5GS / EPS provides packet-switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes NR / evolved Node-Bs (gNBs / eNBs) 203 and other gNBs (eNBs) 204. The gNBs (eNBs) 203 provide user and control plane protocol terminations toward the UEs 201. The gNBs (eNBs) 203 can be connected to other gNBs (eNBs) 204 via an Xn / X2 interface (e.g., backhaul). The gNBs (eNBs) 203 can also be referred to as base stations, base transceiver stations, radio base stations, radio transceivers, transceiver functions, basic service sets (BSSs), extended service sets (ESSs), TRPs (Transmission and Reception Points), or some other suitable terminology. The gNBs (eNBs) 203 provide access to the 5GC / EPC 210 for the UEs 201. Examples of UEs 201 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, unmanned aerial vehicles, narrowband internet of things devices, machine type communication devices, land vehicles, automobiles, wearable devices, test equipment, test instruments, test tools, or any other similar functional devices.A UE 201 can also be referred to as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. A gNB (eNB) 203 is connected by an S1 / NG interface to a 5GC / EPC 210. The 5GC / EPC 210 includes a MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF 214, a S-GW (Service Gateway) / UPF (User Plane Function) 212, and a P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF 211 is the control node that processes the signaling between the UE 201 and the 5GC / EPC 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocal) packets are transferred through the S-GW / UPF 212, which itself is connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation as well as other functions. The P-GW / UPF 213 is connected to Internet services 230. The Internet services 230 include operator corresponding Internet protocol services, which can specifically include the Internet, an intranet, an IMS (IP Multimedia Subsystem), and a packet switched streaming service.

[0209] As one embodiment, the UE 201 corresponds to the terminal in the present application.

[0210] As one embodiment, the UE 201 supports flexible duplex mode transmission.

[0211] As one embodiment, the gNB (eNB) 201 corresponds to the base station in the present application.

[0212] As one embodiment, the gNB (eNB) 201 supports flexible duplex mode transmission.

[0213] Example 3

[0214] Figure 3 shows a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and control plane 300 in accordance with an embodiment of the application, as described in more detail below. Figure 3 Figure 3 Figure 3 shows a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and control plane 300 in accordance with an embodiment of the application, as described in more detail below. Figure 3 ​The radio protocol architecture for the control plane 300 of a terminal (UE or gNB) and base station (gNB or UE) is shown with three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer), the lowest layer, implements various PHY (Physical layer) signal processing functions. The L1 layer will be referred to as the PHY 301 herein. Layer 2 (L2 layer) 305 is above the PHY 301 and is responsible for the link between the terminal and the base station through the PHY 301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, a RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which are terminated at the base station. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security functions that include the ciphering of data packets, as well as the header compression and decompression of data packets. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell among the terminals. The MAC sublayer 302 is also responsible for HARQ 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 base station and the terminal. The radio protocol architecture for the user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer), which are 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 for a terminal and a base station, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. The SDAP (Service Data Adaptation Protocol) sublayer 356 is also included in the L2 layer 355 in the user plane 350, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support the diversity of services.Although not shown, the terminal device can have several upper layers above the L2 layer 355, including network layers (e.g., IP layers) that terminate at the P-GW on the network side and application layers that terminate at the other end of the connection (e.g., a far-end UE, a server, etc.).

[0215] As one embodiment, the wireless protocol architecture in FIG. 3A is applicable to the terminal in the present application. Figure 3

[0216] As one embodiment, the wireless protocol architecture in FIG. 3A is applicable to the terminal in the present application. Figure 3

[0217] As one embodiment, the first information block in the present application is generated at the RRC 306, or the MAC 302, or the MAC 352, or the PHY 301, or the PHY 351.

[0218] As one embodiment, the second information block in the present application is generated at the RRC 306, or the MAC 302, or the MAC 352, or the PHY 301, or the PHY 351.

[0219] As one embodiment, the third information block in the present application is generated at the RRC 306, or the MAC 302, or the MAC 352, or the PHY 301, or the PHY 351.

[0220] As one embodiment, the first PDCCH in the present application is generated at the MAC 302, or the MAC 352, or the PHY 301, or the PHY 351.

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

[0222] Example 4

[0223] Embodiment 4 shows a schematic diagram of a terminal device and a base station device according to one embodiment of the present application, as shown in FIG. 4A. Figure 4

[0224] In the terminal device (450) can include a controller / processor 490, a data source / buffer 480, a reception processor 452, a transmitter / receiver 456 including an antenna 460, and a transmission processor 455.

[0225] ​​​In the base station device 410, a controller / processor 440, a data source 430, a receive processor 412, a transmitter / receiver 416 including antennas 420, and a transmit processor 415 can be included.

[0226] In the DL (Downlink), upper layer packets are provided to the controller / processor 440. The controller / processor 440 implements functionality for the L2 layer and above. In the DL, the controller / processor 440 provides header compression, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocations for the terminal devices 450 based on various priority metrics. The controller / processor 440 is also responsible for HARQ operations, retransmission of lost packets, and signaling of high layer signaling to the terminal devices 450. High layer information carried by the first information block and the second information block in the present application are generated at the controller / processor 440. The transmit processor 415 implements various signal processing functions for the LI layer (i.e., physical layer) including coding, interleaving, scrambling, modulation, power control / assignment, precoding, and physical layer control signaling generation, etc. such as the physical layer signals carrying the first information block and the physical layer signals carrying the second information block and the first PDCCH in the present application are completed at the transmit processor 415. The generated modulation symbols are then sent to the transmitter 416, which includes antennas 420, for upconversion into RF signals and transmission. At the receiver side, each receiver 456 receives a signal from its respective antenna 460, recovers the baseband information from the received signal, and provides the baseband information to the receive processor 452. The receive processor 452 implements various signal processing functions of the LI layer. Signal processing functions of the receive processor 452 include reception of the physical layer signals carrying the first information block in the present application and the physical layer signals carrying the second information block in the present application and the first PDCCH, demodulation of the multiple carrier symbols in the multiple carrier symbol stream based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK)), followed by descrambling, decoding, and deinterleaving to recover the data or control signals transmitted by the base station device 410 on the physical channels, and then providing the data and control signals to the controller / processor 490. The controller / processor 490 is responsible for the L2 layer and above, and the controller / processor 490 interprets high layer information. This includes interpreting the high layer information carried by the first information block and the second information block. The controller / processor can be associated with a memory 480 that stores program codes and data. The memory 480 can be referred to as a computer readable medium.

[0227] In the uplink (UL), similar to the downlink transmission, high layer information (including the third information block in the present application) is processed by the transmit processor 455 to implement various signal (including the first PRACH in the present application) transmission processing functions for the LI layer (i.e., physical layer) after being generated by the controller / processor 490, and is mapped to the antennas 460 via the transmitters 456 for transmission. The receivers 416 receive the radio frequency signals through their respective antennas 420, each receiver 416 recovers the baseband information modulated onto the radio frequency carrier, and provides the baseband information to the receive processor 412. The receive processor 412 implements various signal receiving processing functions for the LI layer (i.e., physical layer) and then provides the data and / or control signals to the controller / processor 440. The functions of the controller / processor 440 include the interpretation of high layer information. The controller / processor can be associated with a memory that stores program codes and data. The memory can be a computer readable medium.

[0228] As an embodiment, the terminal device 450 apparatus comprises at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, cause the terminal device 450 apparatus at least to: receive a first information block, the first information block indicating at least one PRACH configuration index; receive a first PDCCH, the first PDCCH carrying a first field; transmit a first PRACH, the first PDCCH triggering transmission of the first PRACH, the first PRACH carrying a random access preamble sequence; when the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, the opportunity occupied by the first PRACH in the time domain including at least one symbol of the symbol type is the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, the opportunity occupied by the first PRACH is the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; the symbol type of one symbol depends on the configuration of full duplex.

[0229] As one embodiment, the terminal device 450 apparatus includes: a memory storing a computer readable program of instructions which, when executed by at least one processor, results in actions comprising: receiving a first information block, the first information block indicating at least one PRACH configuration index; receiving a first PDCCH, the first PDCCH carrying a first field; transmitting a first PRACH, the first PDCCH triggering transmission of the first PRACH, the first PRACH carrying a random access preamble sequence; when the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, a symbol type of an opportunity occupied by the first PRACH in a time domain is the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, the opportunity occupied by the first PRACH is an opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; a symbol type of one symbol depends on a configuration of full duplex.

[0230] As one embodiment, the base station device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the base station device 410 apparatus at least: transmitting a first information block, the first information block indicating at least one PRACH configuration index; transmitting a first PDCCH, the first PDCCH carrying a first field; receiving a first PRACH, the first PDCCH triggering transmission of the first PRACH, the first PRACH carrying a random access preamble sequence; wherein, when the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, a symbol type of an opportunity occupied by the first PRACH in a time domain is the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, the opportunity occupied by the first PRACH is an opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; a symbol type of one symbol depends on a configuration of full duplex.

[0231] As one embodiment, the base station device 410 includes a memory that stores a computer readable program, which when executed by at least one processor, causes actions including: transmitting a first information block, the first information block indicating at least one PRACH configuration index; transmitting a first PDCCH, the first PDCCH carrying a first field; receiving a first PRACH, the first PDCCH triggering transmission of the first PRACH, the first PRACH carrying a random access preamble sequence; wherein when the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, the opportunity occupied by the first PRACH in time domain includes at least one symbol of the symbol type being the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, the opportunity occupied by the first PRACH is the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; the symbol type of one symbol depends on the configuration of full duplex.

[0232] As one embodiment, the terminal device 450 is a user equipment (UE).

[0233] As one embodiment, the terminal device 450 is a user equipment that supports transmission of flexible duplex mode.

[0234] As one embodiment, the base station device 410 is a base station device (gNB / eNB).

[0235] As one embodiment, the base station device 410 is a base station device that supports transmission of flexible duplex mode.

[0236] As one embodiment, the receiver 456 (including the antenna 460), the receiving processor 452 and the controller / processor 490 are used to receive the first information block in the present application.

[0237] As one embodiment, the receiver 456 (including the antenna 460), the receiving processor 452 and the controller / processor 490 are used to receive the first PDCCH in the present application.

[0238] As one embodiment, the transmitter 456 (including the antenna 460) and the transmitting processor 455 are used to transmit the first PRACH in the present application.

[0239] As one embodiment, the receiver 456 (including the antenna 460), the reception processor 452, and the controller / processor 490 are used to receive the second information block in the present application.

[0240] As one embodiment, the transmitter 456 (including the antenna 460), the transmission processor 455, and the controller / processor 490 are used to transmit the third information block in the present application.

[0241] As one embodiment, the transmitter 416 (including the antenna 420), the transmission processor 415, and the controller / processor 440 are used to transmit the first information block in the present application.

[0242] As one embodiment, the transmitter 416 (including the antenna 420), the transmission processor 415, and the controller / processor 440 are used to transmit the first PDCCH in the present application.

[0243] As one embodiment, the receiver 416 (including the antenna 420) and the reception processor 412 are used to receive the first PRACH in the present application.

[0244] As one embodiment, the transmitter 416 (including the antenna 420), the transmission processor 415, and the controller / processor 440 are used to transmit the second information block in the present application.

[0245] As one embodiment, the receiver 416 (including the antenna 420), the reception processor 412, and the controller / processor 440 are used to receive the third information block in the present application.

[0246] Example 5

[0247] Embodiment 5 illustrates a flowchart of wireless signal transmission according to one embodiment of the present application, as shown in FIG. 5. In FIG. 5, the base station device N 500 is a maintenance base station of a serving cell of the terminal device U 550. It is particularly noted that the order in the present example does not limit the order of signal transmission and implementation in the present application. Figure 5 In FIG. 5, the base station device N 500 is a maintenance base station of a serving cell of the terminal device U 550. It is particularly noted that the order in the present example does not limit the order of signal transmission and implementation in the present application. Figure 5 In FIG. 5, the base station device N 500 is a maintenance base station of a serving cell of the terminal device U 550. It is particularly noted that the order in the present example does not limit the order of signal transmission and implementation in the present application.

[0248] For the first information block, the second information block, the third information block, the first PDCCH, and the first PRACH in the present application, Base station device N 500 for the first information block, the second information block, the third information block, the first PDCCH, and the first PRACH in the present application,

[0249] for the first information block, the second information block, the third information block, the first PDCCH, and the first PRACH in the present application, Terminal device U 550In step S551, the first information block is received, in step S552, the second information block is received, in step S553, the third information block is transmitted, in step S554, the first PDCCH is received, and in step S555, the first PRACH is transmitted.

[0250] In embodiment 5, the first information block indicates at least one PRACH configuration index; the first PDCCH carries a first field; the first PDCCH triggers transmission of the first PRACH, the first PRACH carries a random access preamble sequence; when the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, and the opportunity occupied by the first PRACH in the time domain includes at least one symbol of the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, and the opportunity occupied by the first PRACH is the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; the symbol type of one symbol depends on the configuration of full duplex; the second information block indicates a target sub-band, and the validity of the opportunity occupied by the first PRACH depends on the fact that the opportunity occupied by the first PRACH belongs to the target sub-band in the frequency domain and the frequency domain interval between the opportunity occupied by the first PRACH in the frequency domain and at least one boundary of the target sub-band is not less than a second threshold value, the second threshold value being predefined or configured; the third information block is used to indicate at least one capability parameter of the transmitter of the third information block, and the third information block is used to determine that the first PDCCH carries the first field.

[0251] As an embodiment, the first information block is earlier than the second information block.

[0252] As an embodiment, the first information block is later than the second information block.

[0253] As an embodiment, the first information block and the second information block are transmitted through the same physical channel.

[0254] As an embodiment, the first information block and the second information block respectively include different IEs or fields included in the same IE.

[0255] As an embodiment, the second information block includes higher layer information or higher layer parameter configuration.

[0256] As an embodiment, the second information block comprises one or more IEs included in an RRC layer signaling, or the second information block comprises one or more fields included in an RRC layer signaling. As an embodiment dependent on the above embodiment, the second information block comprises RRC layer information can reduce signaling overhead.

[0257] As an embodiment, the second information block comprises part or all fields included in a SIB.

[0258] As an embodiment, the second information block is Cell Common or the second information block is Cell specific.

[0259] As an embodiment, the second information block is Group Common.

[0260] As an embodiment, the second information block is UE specific or UE dedicated.

[0261] As an embodiment, the second information block is per subband.

[0262] As an embodiment, the second information block is per carrier. As an embodiment dependent on the above embodiment, per carrier SBFD reduces complexity.

[0263] As an embodiment, the second information block is Per BWP. As an embodiment dependent on the above embodiment, per BWP SBFD can reuse existing design, reduce standardization work.

[0264] As an embodiment, the second information block comprises part or all fields in IE “SBFDConfigDedicated-r19”.

[0265] As an embodiment, the second information block comprises part or all fields in IE “SBFDConfigCommon-r19”.

[0266] As an embodiment, the second information block comprises part or all fields in IE “SBFDConfig-r19”.

[0267] As an embodiment, the second information block comprises part or all fields in IE “ServingCellConfigCommon”.

[0268] As one embodiment, the second information block includes some or all fields in IE "CellGroupConfig".

[0269] As one embodiment, the second information block includes some or all fields in IE "SpCellConfig".

[0270] As one embodiment, the second information block includes some or all fields in IE "SCellConfig".

[0271] As one embodiment, the second information block includes some or all fields in IE "ServingCellConfigCommonSIB".

[0272] As one embodiment, the second information block includes some or all fields in IE "ServingCellConfig".

[0273] As one embodiment, the second information block includes some or all fields in DCI (downlink control information) format 2_N, where N is a non-negative integer.

[0274] As one embodiment, the second information block includes some or all fields in a DCI format. As one dependent embodiment of the above embodiment, the second information block includes a DCI format that can provide more flexibility.

[0275] As one embodiment, the second information block is transmitted on PDCCH (physical downlink control channel).

[0276] As one embodiment, the second information block configures time slots or symbols for SBFD (Subband non-overlapping Full Duplex).

[0277] As one embodiment, the second information block configures at least one of an UL (uplink) subband, a DL (downlink) subband, or a guard band for SBFD.

[0278] As one embodiment, the second information block configures time slots or symbols for SBFD.

[0279] Example 6

[0280] Embodiment 6 illustrates a diagram of a first threshold value according to one embodiment of the present application, as shown in FIG. 6.Figure 6 Figure 6 shows the first PRACH opportunity in each case. In the figures, the rectangle represents a time slot, "DL" represents a downlink symbol in the time slot which is not a SBFD symbol, "UL" represents an uplink symbol in the time slot, "FD" represents a SBFD symbol in the time slot, and the small gray-filled rectangle represents the first PRACH opportunity; in case A, the first threshold value represents a threshold value of the interval length between a downlink symbol and a SBFD symbol, in case B, the first threshold value represents a threshold value of the interval length between an uplink symbol and a SBFD symbol, in case C, the first threshold value represents a threshold value of the interval length between a SBFD symbol and an uplink symbol, and in case D, the first threshold value represents a threshold value of the interval length between a SBFD symbol and a downlink symbol. Figure 6

[0281] In embodiment 6, the first PRACH opportunity in the present application is a valid PRACH opportunity, and the validity of the first PRACH opportunity depends on the interval length between the first PRACH opportunity and the adjacent non-SBFD symbol being greater than a first threshold value, and the first threshold value is configured or predefined and / or related to the user equipment capability.

[0282] As an embodiment, the transition delay between the SBFD symbol and the non-SBFD symbol is considered in the validity judgment of a PRACH opportunity, the implementation restriction is considered while improving the success transmission probability of the PRACH, and the implementation complexity of transmitting the PRACH on the SBFD symbol is reduced.

[0283] As an embodiment, a valid PRACH opportunity is a PRACH opportunity that can be used for PRACH transmission.

[0284] As an embodiment, a valid PRACH opportunity is a PRACH opportunity associated with a synchronization broadcast signal.

[0285] As an embodiment, a valid PRACH opportunity is a PRACH opportunity mapped to a synchronization broadcast signal.

[0286] As an embodiment, a valid PRACH opportunity is a PRACH opportunity mapped to a synchronization broadcast signal.

[0287] As an embodiment, a valid PRACH opportunity is a PRACH opportunity that can be used for uplink synchronization.

[0288] ​As one embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is the gap length between the start of the opportunity occupied by the first PRACH in time domain and the start of the adjacent non-SBFD symbol.

[0289] As one embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is the gap length between the start of the opportunity occupied by the first PRACH in time domain and the end of the adjacent non-SBFD symbol.

[0290] As one embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is the gap length between the end of the opportunity occupied by the first PRACH in time domain and the start of the adjacent non-SBFD symbol.

[0291] As one embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is the gap length between the end of the opportunity occupied by the first PRACH in time domain and the end of the adjacent non-SBFD symbol.

[0292] As one embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol.

[0293] As one embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol.

[0294] As one embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol.

[0295] As one embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol.

[0296] As an embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is the gap length between the start of the opportunity occupied by the first PRACH in time domain and the last non-SBFD symbol. As an auxiliary embodiment of the above embodiment, the gap length between and the last non-SBFD symbol meets the requirement of transmission delay of different coverage ranges while guaranteeing the transition time between non-SBFD symbol and SBFD symbol.

[0297] As an embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is the gap length between the end of the opportunity occupied by the first PRACH in time domain and the next non-SBFD symbol. As an auxiliary embodiment of the above embodiment, the gap length between and the next non-SBFD symbol guarantees the transition time between SBFD symbol and non-SBFD symbol, and reduces the implementation complexity.

[0298] As an embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is expressed in absolute time length.

[0299] As an embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is expressed in the number of symbols.

[0300] As an embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is expressed in the number of symbols corresponding to the subcarrier spacing of the preamble.

[0301] As an embodiment, the gap length between the opportunity occupied by the first PRACH in time domain and the adjacent non-SBFD symbol is expressed in the number of symbols corresponding to the subcarrier spacing of the active uplink BWP.

[0302] As an embodiment, the adjacent non-SBFD symbol is the last non-SBFD symbol.

[0303] As an embodiment, the adjacent non-SBFD symbol is the next non-SBFD symbol.

[0304] As an embodiment, the adjacent non-SBFD symbol is the nearest non-SBFD symbol before.

[0305] As an embodiment, the adjacent non-SBFD symbol is the nearest non-SBFD symbol after.

[0306] As one embodiment, the adjacent non-SBFD symbol is the previous or next downlink symbol.

[0307] As one embodiment, the adjacent non-SBFD symbol is the previous or next downlink symbol indicated by tdd-UL-DL-ConfigCommon.

[0308] As one embodiment, the adjacent non-SBFD symbol is the previous or next downlink symbol not indicated as SBFD symbol.

[0309] As one embodiment, the adjacent non-SBFD symbol is the previous or next downlink symbol not indicated as SBFD symbol indicated by tdd-UL-DL-ConfigCommon.

[0310] As one embodiment, the adjacent non-SBFD symbol is the previous or next uplink symbol.

[0311] As one embodiment, the adjacent non-SBFD symbol is the previous or next uplink symbol indicated by tdd-UL-DL-ConfigCommon.

[0312] As one embodiment, the first threshold is a non-negative integer.

[0313] As one embodiment, the first threshold can be a non-integer.

[0314] As one embodiment, the unit of the first threshold is second or millisecond.

[0315] As one embodiment, the first threshold represents a number of symbols.

[0316] As one embodiment, the technical feature “validity of the opportunity occupied by the first PRACH depends on that the length of the interval between the opportunity occupied by the first PRACH and the adjacent non-SBFD symbol in time domain is greater than a first threshold” includes that the length of the interval between the opportunity occupied by the first PRACH and the adjacent non-SBFD symbol in time domain being greater than the first threshold is used to determine or judge that the opportunity occupied by the first PRACH is valid.

[0317] As one embodiment, the technical feature “validity of the opportunity occupied by the first PRACH depends on that the length of the interval between the opportunity occupied by the first PRACH and the adjacent non-SBFD symbol in time domain is greater than a first threshold” includes that the length of the interval between the opportunity occupied by the first PRACH and the adjacent non-SBFD symbol in time domain being greater than the first threshold is a necessary condition for the opportunity occupied by the first PRACH to be valid.

[0318] As one embodiment, the technical feature "validity of the opportunity occupied by the first PRACH depends on that the length of the interval between the opportunity occupied by the first PRACH and the adjacent non-SBFD symbol in time domain is greater than a first threshold" includes: the condition that the opportunity occupied by the first PRACH is valid includes that the length of the interval between the opportunity occupied by the first PRACH and the adjacent non-SBFD symbol in time domain is not less than (or greater than) the first threshold.

[0319] As one embodiment, the technical feature "validity of the opportunity occupied by the first PRACH depends on that the length of the interval between the opportunity occupied by the first PRACH and the adjacent non-SBFD symbol in time domain is greater than a first threshold" includes: the validity of the opportunity occupied by the first PRACH depends on that the start of the opportunity occupied by the first PRACH in time domain is at least N1 symbols later than the adjacent non-SBFD symbol, N1 being the first threshold.

[0320] As one embodiment, the technical feature "validity of the opportunity occupied by the first PRACH depends on that the length of the interval between the opportunity occupied by the first PRACH and the adjacent non-SBFD symbol in time domain is greater than a first threshold" includes: the validity of the opportunity occupied by the first PRACH depends on that the end of the opportunity occupied by the first PRACH in time domain is at least N2 symbols earlier than the adjacent non-SBFD symbol, N2 being the first threshold.

[0321] As one embodiment, the technical feature "validity of the opportunity occupied by the first PRACH depends on that the length of the interval between the opportunity occupied by the first PRACH and the adjacent non-SBFD symbol in time domain is greater than a first threshold" includes: the opportunity occupied by the first PRACH is valid when the opportunity occupied by the first PRACH belongs to an uplink sub-band in frequency domain and the frequency domain interval between the opportunity occupied by the first PRACH and at least one boundary of the uplink sub-band in frequency domain is not less than a configured or predefined threshold and the start of the opportunity occupied by the first PRACH in time domain is N1 symbols later than the adjacent non-SBFD symbol, N1 being the first threshold.

[0322] As an embodiment, the technical feature "validity of the first PRACH occasion depends on that the length of the gap between the first PRACH occasion and the adjacent non-SBFD symbol in time domain is larger than a first threshold" includes: the first PRACH occasion is valid when the first PRACH occasion belongs to an uplink sub-band in frequency domain and the frequency domain gap between the first PRACH occasion and at least one boundary of the uplink sub-band in frequency domain is no less than a configured or predefined threshold and the end of the first PRACH occasion is N2 symbols earlier than the adjacent non-SBFD symbol in time domain, N2 is the first threshold.

[0323] As an embodiment, the technical feature "validity of the first PRACH occasion depends on that the length of the gap between the first PRACH occasion and the adjacent non-SBFD symbol in time domain is larger than a first threshold" includes: the first PRACH occasion is valid when the first PRACH occasion belongs to an uplink sub-band in frequency domain and the start of the first PRACH occasion is N1 symbols later than the adjacent non-SBFD symbol in time domain and the end of the first PRACH occasion is N2 symbols earlier than the adjacent non-SBFD symbol in time domain, N1 or N2 is the first threshold, N1 is a non-negative integer, N2 is a non-negative integer.

[0324] As an embodiment, the technical feature "validity of the first PRACH occasion depends on that the length of the gap between the first PRACH occasion and the adjacent non-SBFD symbol in time domain is larger than a first threshold" includes: the first PRACH occasion is valid when the first PRACH occasion belongs to an uplink sub-band in frequency domain and the frequency domain gap between the first PRACH occasion and at least one boundary of the uplink sub-band in frequency domain is no less than a configured or predefined threshold and the start of the first PRACH occasion is N1 symbols later than the adjacent non-SBFD symbol in time domain and the end of the first PRACH occasion is N2 symbols earlier than the adjacent non-SBFD symbol in time domain, N1 or N2 is the first threshold, N1 is a non-negative integer, N2 is a non-negative integer.

[0325] As an embodiment, the first threshold is configured or predefined.

[0326] As an embodiment, the first threshold is related to user equipment capability.

[0327] As an embodiment, the first threshold is configured and related to user equipment capability

[0328] As an embodiment, the first threshold being configured comprises that the first threshold is indicated by higher layer signaling or a higher layer parameter.

[0329] As an embodiment, the first threshold being configured comprises that the first threshold is dependent on higher layer signaling or a higher layer parameter.

[0330] As an embodiment, the first threshold being configured comprises that the first threshold is dependent on subcarrier spacing, and the subcarrier spacing on which the first threshold is dependent is indicated by higher layer signaling or a higher layer parameter.

[0331] As an embodiment, the first threshold being configured comprises that whether the first threshold is equal to a value reported by a user equipment capability is indicated by higher layer signaling or a higher layer parameter.

[0332] As an embodiment, the first threshold being configured comprises that an offset value between the first threshold and a value reported by a user equipment capability is indicated by higher layer signaling or a higher layer parameter.

[0333] As an embodiment, the first threshold being configured comprises that a parameter used to calculate the first threshold comprises a first parameter value, and the first parameter value is indicated by higher layer signaling or a higher layer parameter.

[0334] As an embodiment, the first threshold being configured comprises that the first threshold is linearly related to a first parameter value, and the first parameter value is indicated by higher layer signaling or a higher layer parameter.

[0335] As an embodiment, the first threshold being predefined comprises that the first threshold is fixed.

[0336] As an embodiment, the first threshold being predefined comprises that the first threshold is hard coded in a standard.

[0337] As an embodiment, the first threshold being predefined comprises that a relationship between the first threshold and a value of another parameter is fixed.

[0338] As an embodiment, the first threshold being predefined comprises that a correspondence between the first threshold and a subcarrier spacing is fixed.

[0339] As an embodiment, the first threshold being predefined comprises that a parameter used to calculate the first threshold comprises a first parameter value, and the first parameter value is a fixed value.

[0340] As an embodiment, the first threshold being related to a user equipment capability comprises that the first threshold is equal to a value reported by a user equipment capability.

[0341] As an embodiment, the first threshold being related to the user equipment capability comprises that the first threshold is not less than a value reported by the user equipment capability.

[0342] As an embodiment, the first threshold being related to the user equipment capability comprises that a parameter used to calculate the first threshold comprises a first parameter value, and the first parameter value is equal to a value reported by the user equipment capability.

[0343] As an embodiment, the first threshold being related to the user equipment capability comprises that the first threshold is linearly related to a first parameter value, and the first parameter value is equal to a value reported by the user equipment capability.

[0344] As an embodiment, the first threshold being related to the user equipment capability further depends on whether the user equipment capability supports SBFD or whether the user equipment capability supports transmitting PRACH in a downlink SBFD symbol.

[0345] As an embodiment, the network configuring the first threshold can take into account the switching delay between different hardware or algorithm implementations of the network side in processing SBFD symbols and non-SBFD symbols, thereby ensuring effective operation of self-interference cancellation of the network.

[0346] As an embodiment, the predefined first threshold can support setting a fixed threshold that is relatively large, thereby simplifying the design under the condition that the switching and processing delays of the network and the user side are satisfied.

[0347] As an embodiment, the first threshold being related to the user equipment capability can ensure that the switching and processing delays of the user equipment are satisfied, thereby reducing the implementation complexity of the user equipment.

[0348] As an embodiment, the first threshold being related to the user equipment capability and being configured by the network can ensure that the switching and processing delays of the user equipment are satisfied, and at the same time, different network side implementations are considered, thereby optimizing the setting of the first threshold, avoiding damage to effective PRACH opportunities, and improving the capacity of PRACH.

[0349] As an embodiment, the first threshold is equal to a larger value between a first candidate interval and a second candidate interval, the first candidate interval being related to the subcarrier spacing of the random access preamble or being configured, and the second candidate interval being related to the user equipment capability.

[0350] As an embodiment, the first threshold is equal to a larger value between N gap and a first capability value, N gap being related to the subcarrier spacing of the random access preamble, and the first capability value being related to the user equipment capability.

[0351] Example 7

[0352] Embodiment 7 illustrates a diagram of a second threshold according to an embodiment of the present application, as shown in FIG. 7. In FIG. 7, the vertical axis represents frequency, the thick-lined rectangular represents a target subband, the diagonally-filled rectangular represents an opportunity occupied by a first PRACH, and the second threshold represents a threshold of a frequency interval from a boundary of the target subband to a frequency within the target subband. Figure 7 Figure 7 In FIG. 7, the vertical axis represents frequency, the thick-lined rectangular represents a target subband, the diagonally-filled rectangular represents an opportunity occupied by a first PRACH, and the second threshold represents a threshold of a frequency interval from a boundary of the target subband to a frequency within the target subband.

[0353] In Embodiment 7, the second information block indicates a target subband, and the validity of the opportunity occupied by the first PRACH depends on that the opportunity occupied by the first PRACH belongs to the target subband in frequency domain and that a frequency interval between the opportunity occupied by the first PRACH and at least one boundary of the target subband in frequency domain is not less than a second threshold, the second threshold being predefined or configured.

[0354] As an embodiment, considering the impact of self-interference on adjacent frequency bands when judging the validity of a PRACH opportunity ensures the effective transmission of PRACH and improves the performance of random access.

[0355] As an embodiment, the target subband is a SBFD subband.

[0356] As an embodiment, the target subband is a SBFD subband for uplink.

[0357] As an embodiment, the target subband is a SBFD subband for uplink.

[0358] As an embodiment, the target subband is a SBFD subband for uplink.

[0359] As an embodiment, the target subband includes a guard.

[0360] As an embodiment, the target subband does not include a guard.

[0361] As an embodiment, the target subband includes contiguous frequency domain resources.

[0362] As an embodiment, an uplink BWP includes all or part of the frequency domain resources in the target subband. As an embodiment of the above, the target subband belonging to the uplink BWP can maximize the reuse of existing design and reduce design complexity.

[0363] ​As an embodiment, an active uplink BWP includes all or part of frequency domain resources in the target sub-band. As an embodiment of the above, the active uplink BWP including part of the frequency domain resources in the target sub-band can support sub-band configuration at the carrier level, increasing flexibility.

[0364] As an embodiment, in a time domain symbol, there is no overlapping frequency domain resource between the target sub-band and the active uplink BWP.

[0365] As an embodiment, in a time domain symbol, there is no overlapping frequency domain resource between the target sub-band and the active uplink BWP.

[0366] As an embodiment, the boundary of the RBs included in the target sub-band is aligned with the boundary of the RBs in the uplink BWP. As an embodiment of the above, the uplink resource fragmentation is avoided, and coverage is improved.

[0367] As an embodiment, the target sub-band is per numerology or per sub-carrier spacing.

[0368] As an embodiment, the target sub-band is per resource grid. As an embodiment of the above, the per-grid configuration sub-band improves configuration flexibility.

[0369] As an embodiment, the target sub-band is per BWP. As an embodiment of the above, the per-BWP configuration sub-band ensures compatibility and reduces standard complexity.

[0370] As an embodiment, the boundary of the RBs included in the target sub-band is aligned with the boundary of the RBs in the downlink BWP. As an embodiment of the above, the downlink resource fragmentation is avoided, and scheduling flexibility is ensured.

[0371] As an embodiment, the second information block indicating the target sub-band includes: all or part of the second information block explicitly or implicitly indicating the target sub-band.

[0372] As an embodiment, the second information block indicating the target sub-band includes: the second information block indicating the starting RB (or the lowest index RB) of the target sub-band.

[0373] As an embodiment, the second information block indicating the target sub-band includes: the second information block indicating the number of RBs included in the target sub-band.

[0374] As an embodiment, the second information block indicating the target sub-band comprises: the second information block indicating a RIV (resource indicator value) corresponding to the target sub-band.

[0375] As an embodiment, the second information block indicating the target sub-band comprises: the second information block indicating a RIV corresponding to the target sub-band, and a starting RB of the target sub-band and a number of continuous RBs included are used to generate the corresponding RIV.

[0376] As an embodiment, the second information block indicating the target sub-band comprises: the second information block indicating a SLIV (start and length indicator value) corresponding to the target sub-band.

[0377] As an embodiment, the second information block indicating the target sub-band comprises: the second information block indicating a SLIV corresponding to the target sub-band, and a starting RB of the target sub-band and a number of continuous RBs included are used to generate the corresponding SLIV.

[0378] As an embodiment, the second information block indicating the target sub-band comprises: the second information block indicating at least one CRB (common resource block) included in the target sub-band for one subcarrier spacing.

[0379] As an embodiment, the second information block indicating the target sub-band comprises: the second information block indicating a number of CRBs spaced between a lowest index CRB and a point A included in the target sub-band and a number of continuous CRBs included in the target sub-band.

[0380] As an embodiment, the second information block indicating the target sub-band comprises: all or part of the second information block explicitly or implicitly indicating the number of CRBs for a reference sub-carrier spacing spaced between a lowest index of CRB for the reference sub-carrier spacing and a point A and the number of contiguous CRBs for the reference sub-carrier spacing comprised by the target sub-band. As an embodiment of the above, the reference sub-carrier spacing is equal to a sub-carrier spacing in a resource grid of an uplink; the benefits of doing so include avoiding resource fragmentation. As an embodiment of the above, the reference sub-carrier spacing is equal to a sub-carrier spacing in a resource grid of a downlink; the benefits of doing so include improving scheduling flexibility. As an embodiment of the above, the reference sub-carrier spacing is related to a frequency range (FR). As an embodiment of the above, the reference sub-carrier spacing is predefined or configured. As an embodiment of the above, the reference sub-carrier spacing is a maximum of sub-carrier spacings respectively for a plurality of configured uplink resource grids; the benefits of doing so include ensuring alignment with uplink resources. As an embodiment of the above, the reference sub-carrier spacing is a maximum of sub-carrier spacings respectively for a plurality of configured downlink resource grids; the benefits of doing so include ensuring alignment with downlink resources. As an embodiment of the above, the reference sub-carrier spacing is a maximum of sub-carrier spacings respectively for all configured resource grids; the benefits of doing so include ensuring alignment with both uplink and downlink resources.

[0381] As an embodiment, the second information block indicating the target sub-band comprises: the second information block respectively indicating M1 sub-bands from M1 resource grids, the M1 being a positive integer greater than 1, the target sub-band being one of the M1 sub-bands. As an embodiment of the above, the M1 resource grids are M1 uplink resource grids; the benefits of doing so include avoiding uplink resource fragmentation while not increasing signaling overhead. As an embodiment of the above, the M1 resource grids are M1 downlink resource grids; the benefits of doing so include avoiding downlink resource fragmentation while not increasing signaling overhead. As an embodiment of the above, the M1 resource grids include both uplink resource grids and downlink resource grids; the benefits of doing so include considering both uplink and downlink resource allocation while increasing some signaling overhead. As an embodiment of the above, the M1 resource grids are configured.

[0382] As an embodiment, the one SBFD symbol indicated by the second information block is a time domain symbol in which the target sub-band is configured.

[0383] As an embodiment, the opportunity occupied by the first PRACH belongs to the target sub-band in frequency domain includes that all frequency domain resources occupied by the opportunity occupied by the first PRACH are located in the target sub-band.

[0384] As an embodiment, the opportunity occupied by the first PRACH belongs to the target sub-band in frequency domain includes that the target sub-band includes all frequency domain resources occupied by the opportunity occupied by the first PRACH.

[0385] As an embodiment, the frequency domain interval between the opportunity occupied by the first PRACH in frequency domain and at least one boundary of the target sub-band is a frequency domain interval between a lowest frequency (or a lowest indexed subcarrier) of the opportunity occupied by the first PRACH and at least one boundary of the target sub-band.

[0386] As an embodiment, the frequency domain interval between the opportunity occupied by the first PRACH in frequency domain and at least one boundary of the target sub-band is a frequency domain interval between a highest frequency (or a highest indexed subcarrier) of the opportunity occupied by the first PRACH and at least one boundary of the target sub-band.

[0387] As an embodiment, the frequency domain interval between the opportunity occupied by the first PRACH in frequency domain and at least one boundary of the target sub-band is a frequency domain interval between a lowest frequency (or a lowest indexed subcarrier) of the opportunity occupied by the first PRACH and a lowest frequency (or a lowest indexed subcarrier included) of the target sub-band.

[0388] As an embodiment, the frequency domain interval between the opportunity occupied by the first PRACH in frequency domain and at least one boundary of the target sub-band is a frequency domain interval between a highest frequency (or a highest indexed subcarrier) of the opportunity occupied by the first PRACH and a highest frequency (or a highest indexed subcarrier included) of the target sub-band.

[0389] As an embodiment, the frequency domain interval between the opportunity occupied by the first PRACH in frequency domain and at least one boundary of the target sub-band includes a frequency domain interval between a lowest frequency (or a lowest indexed subcarrier) of the opportunity occupied by the first PRACH and a lowest frequency (or a lowest indexed subcarrier included) of the target sub-band and a frequency domain interval between a highest frequency (or a highest indexed subcarrier) of the opportunity occupied by the first PRACH and a highest frequency (or a highest indexed subcarrier included) of the target sub-band.

[0390] As one embodiment, the second threshold is a non-negative integer.

[0391] As one embodiment, the second threshold can be a non-integer.

[0392] As one embodiment, the second threshold is in units of Hertz or kilo-Hertz.

[0393] As one embodiment, the second threshold represents a number of subcarriers.

[0394] As one embodiment, the first PRACH occupies an opportunity in the frequency domain that is not less than a second threshold from at least one boundary of the target sub-band in the frequency domain includes that the first PRACH occupies an opportunity in the frequency domain that is greater than the second threshold from at least one boundary of the target sub-band in the frequency domain.

[0395] As one embodiment, the first PRACH occupies an opportunity in the frequency domain that is not less than a second threshold from at least one boundary of the target sub-band in the frequency domain includes that the first PRACH occupies an opportunity in the frequency domain that is greater than or equal to the second threshold from at least one boundary of the target sub-band in the frequency domain.

[0396] As one embodiment, the first PRACH occupies an opportunity in the frequency domain that is not less than a second threshold from at least one boundary of the target sub-band in the frequency domain includes that the first PRACH occupies an opportunity in the frequency domain that is not less than the second threshold between all frequency resources (or all subcarriers) included in the frequency domain and the lowest frequency (or lowest indexed subcarrier included) of the target sub-band.

[0397] As one embodiment, the first PRACH occupies an opportunity in the frequency domain that is not less than a second threshold from at least one boundary of the target sub-band in the frequency domain includes that the first PRACH occupies an opportunity in the frequency domain that is not less than the second threshold between all frequency resources (or all subcarriers) included in the frequency domain and the highest frequency (or highest indexed subcarrier included) of the target sub-band.

[0398] As one embodiment, the first PRACH occupies an opportunity in the frequency domain with a frequency domain separation between the target sub-band and at least one boundary of the target sub-band not less than a second threshold value includes: the first PRACH occupies an opportunity in the frequency domain with a frequency domain separation between all frequency resources (or all subcarriers) included in the frequency domain and the lowest frequency (or the lowest indexed subcarrier included) of the target sub-band not less than the second threshold value; the first PRACH occupies an opportunity in the frequency domain with a frequency domain separation between all frequency resources (or all subcarriers) included in the frequency domain and the highest frequency (or the highest indexed subcarrier included) of the target sub-band not less than the second threshold value.

[0399] As one embodiment, the first PRACH occupies an opportunity in the frequency domain with a frequency domain separation between the target sub-band and at least one boundary of the target sub-band not less than a second threshold value includes: the highest frequency (or the highest indexed subcarrier) of the first PRACH occupies an opportunity in the frequency domain with a frequency domain separation between the highest frequency (or the highest indexed subcarrier included) of the target sub-band not less than the second threshold value; the lowest frequency (or the lowest indexed subcarrier) of the first PRACH occupies an opportunity in the frequency domain with a frequency domain separation between the lowest frequency (or the lowest indexed subcarrier included) of the target sub-band not less than the second threshold value.

[0400] As one embodiment, the validity of the first PRACH occupies an opportunity in the frequency domain depends on the first PRACH occupies an opportunity in the frequency domain belonging to the target sub-band and the first PRACH occupies an opportunity in the frequency domain with a frequency domain separation between the target sub-band and at least one boundary of the target sub-band not less than a second threshold value includes: the first PRACH occupies an opportunity in the frequency domain belonging to the target sub-band and the first PRACH occupies an opportunity in the frequency domain with a frequency domain separation between the target sub-band and at least one boundary of the target sub-band not less than a second threshold value is a necessary condition for the first PRACH occupies an opportunity to be valid.

[0401] As one embodiment, the validity of the first PRACH occupies an opportunity in the frequency domain depends on the first PRACH occupies an opportunity in the frequency domain belonging to the target sub-band and the first PRACH occupies an opportunity in the frequency domain with a frequency domain separation between the target sub-band and at least one boundary of the target sub-band not less than a second threshold value includes: the condition for the first PRACH occupies an opportunity to be valid includes the first PRACH occupies an opportunity in the frequency domain belonging to the target sub-band and the first PRACH occupies an opportunity in the frequency domain with a frequency domain separation between the target sub-band and at least one boundary of the target sub-band not less than a second threshold value.

[0402] As an embodiment, the validity of the opportunity occupied by the first PRACH depends on that the opportunity occupied by the first PRACH belongs to the target sub-band in frequency domain and a frequency domain interval between the opportunity occupied by the first PRACH in frequency domain and at least one boundary of the target sub-band is not less than a second threshold includes: the opportunity occupied by the first PRACH is valid when the opportunity occupied by the first PRACH belongs to the target sub-band in frequency domain and the frequency domain interval between the opportunity occupied by the first PRACH in frequency domain and at least one boundary of the target sub-band is not less than the second threshold.

[0403] As an embodiment, the validity of the opportunity occupied by the first PRACH depends on that the opportunity occupied by the first PRACH belongs to the target sub-band in frequency domain and a frequency domain interval between the opportunity occupied by the first PRACH in frequency domain and at least one boundary of the target sub-band is not less than a second threshold includes: the opportunity occupied by the first PRACH belongs to the target sub-band in frequency domain and the frequency domain interval between the opportunity occupied by the first PRACH in frequency domain and at least one boundary of the target sub-band is not less than the second threshold is used to determine that the opportunity occupied by the first PRACH is valid.

[0404] As an embodiment, the second threshold is configured includes that the second threshold depends on higher layer signaling or a higher layer parameter.

[0405] As an embodiment, the second threshold is configured includes that the second threshold depends on a subcarrier spacing, and the second threshold depending on the subcarrier spacing is indicated by higher layer signaling or a higher layer parameter.

[0406] As an embodiment, the second threshold is configured includes that a parameter used to calculate the second threshold includes a second parameter value, and the second parameter value is indicated by higher layer signaling or a higher layer parameter.

[0407] As an embodiment, the second threshold is predefined includes that the second threshold is fixed.

[0408] As an embodiment, the second threshold is predefined includes that the second threshold is hard coded in a standard.

[0409] As an embodiment, the second threshold is predefined includes that a relationship between the second threshold and a value of another parameter is fixed.

[0410] As an embodiment, the second threshold is predefined includes that a relationship between the second threshold and a value of another parameter is fixed.

[0411] As an embodiment, the second threshold is predefined, including that the correspondence between the second threshold and the subcarrier spacing is fixed.

[0412] As an embodiment, the second threshold is predefined, including that the parameter for calculating the second threshold includes a second parameter value, and the second parameter value is a fixed value.

[0413] As an embodiment, the second threshold is related to the subcarrier spacing of the preamble.

[0414] As an embodiment, the second threshold is related to the subcarrier spacing of the target sub-band.

[0415] As an embodiment, the second threshold is related to the subcarrier spacing of the BWP.

[0416] As an embodiment, the second threshold is related to both the subcarrier spacing of the preamble and the subcarrier spacing of the target sub-band.

[0417] Example 8

[0418] Embodiment 8 illustrates a schematic diagram of a third threshold according to an embodiment of the present application, as shown in FIG. 8. Figure 8 In FIG. 8, the horizontal axis represents time, the vertical axis represents frequency, the cross-line filled rectangle represents a first PDCCH, and the diagonal-line filled rectangle represents a first PRACH. Figure 8

[0419] In Embodiment 8, the time interval length between the first PDCCH and the first PRACH in the time domain is not less than a third threshold, and the third threshold depends on at least one of the symbol type of the symbol included in the first PDCCH in the time domain or the symbol type of the symbol included in the opportunity occupied by the first PRACH in the time domain.

[0420] As an embodiment, associating the third threshold with the symbol type considers the impact of the introduction of the SBFD symbol on the processing delay requirement, and reduces the complexity of product implementation.

[0421] As an embodiment, the latest symbol of the reception of the first PDCCH is not later than the earliest symbol of the transmission of the first PRACH.

[0422] As an embodiment, the latest symbol of the reception of the first PDCCH is earlier than the earliest symbol of the transmission of the first PRACH.

[0423] ​As an embodiment, the length of the time interval between the first PDCCH and the first PRACH in time domain is the length of the time interval between the latest symbol of the reception of the first PDCCH and the earliest symbol of the transmission of the first PRACH.

[0424] As an embodiment, the length of the time interval between the first PDCCH and the first PRACH in time domain is the time domain delay between the first PDCCH and the first PRACH.

[0425] As an embodiment, the length of the time interval between the first PDCCH and the first PRACH in time domain is the length of the time interval between the end time of the latest symbol of the reception of the first PDCCH and the start time of the earliest symbol of the transmission of the first PRACH.

[0426] As an embodiment, the length of the time interval between the first PDCCH and the first PRACH in time domain is the length of the time interval between the start time of the latest symbol of the reception of the first PDCCH and the start time of the earliest symbol of the transmission of the first PRACH.

[0427] As an embodiment, the length of the time interval between the first PDCCH and the first PRACH in time domain is the length of the time interval between the end time of the latest symbol of the reception of the first PDCCH and the end time of the earliest symbol of the transmission of the first PRACH.

[0428] As an embodiment, the length of the time interval between the first PDCCH and the first PRACH in time domain is in unit of millisecond (ms).

[0429] As an embodiment, the length of the time interval between the first PDCCH and the first PRACH in time domain is represented by the number of symbols.

[0430] As an embodiment, the length of the time interval between the first PDCCH and the first PRACH in time domain is represented by absolute time.

[0431] As an embodiment, the third threshold is in unit of millisecond.

[0432] As an embodiment, the third threshold is represented by absolute time.

[0433] As an embodiment, the third threshold is represented by the number of symbols.

[0434] As an embodiment, the length of the time interval between the first PDCCH and the first PRACH in time domain is greater than or equal to the third threshold.

[0435] As one embodiment, the symbol type of the symbol included in the time domain by the first PDCCH is the symbol type of all symbols included in the time domain by the first PDCCH.

[0436] As one embodiment, the symbol type of the symbol included in the time domain by the first PDCCH is the symbol type of the partial symbol included in the time domain by the first PDCCH.

[0437] As one embodiment, "the third threshold value depends on at least one of the symbol type of the symbol included in the time domain by the first PDCCH or the symbol type of the symbol included in the time domain by the opportunity occupied by the first PRACH" includes that the third threshold value depends on the symbol type of the symbol included in the time domain by the first PDCCH and the symbol type of the symbol included in the time domain by the opportunity occupied by the first PRACH.

[0438] As one embodiment, "the third threshold value depends on at least one of the symbol type of the symbol included in the time domain by the first PDCCH or the symbol type of the symbol included in the time domain by the opportunity occupied by the first PRACH" includes that the third threshold value depends on the symbol type of the symbol included in the time domain by the first PDCCH.

[0439] As one embodiment, "the third threshold value depends on at least one of the symbol type of the symbol included in the time domain by the first PDCCH or the symbol type of the symbol included in the time domain by the opportunity occupied by the first PRACH" includes that the third threshold value depends on the symbol type of the symbol included in the time domain by the opportunity occupied by the first PRACH.

[0440] As one embodiment, "the third threshold value depends on at least one of the symbol type of the symbol included in the time domain by the first PDCCH or the symbol type of the symbol included in the time domain by the opportunity occupied by the first PRACH" includes that at least one of the symbol type of the symbol included in the time domain by the first PDCCH or the symbol type of the symbol included in the time domain by the opportunity occupied by the first PRACH is used to determine the third threshold value.

[0441] As one embodiment, "the third threshold value depends on at least one of the symbol type of the symbol included in the time domain by the first PDCCH or the symbol type of the symbol included in the time domain by the opportunity occupied by the first PRACH" includes that the third threshold value depends on whether the symbol type of the symbol included in the time domain by the first PDCCH and the symbol type of the symbol included in the time domain by the opportunity occupied by the first PRACH are the same.

[0442] As one embodiment, "the third threshold depends on at least one of a symbol type of symbols included in time domain by the first PDCCH or a symbol type of symbols included in time domain by the first PRACH" includes that at least one parameter included in the third threshold depends on whether the symbol type of symbols included in time domain by the first PDCCH and the symbol type of symbols included in time domain by the first PRACH are same.

[0443] As one embodiment, "the third threshold depends on at least one of a symbol type of symbols included in time domain by the first PDCCH or a symbol type of symbols included in time domain by the first PRACH" includes that when the symbol type of symbols included in time domain by the first PDCCH and the symbol type of symbols included in time domain by the first PRACH are same, one parameter included in the third threshold equals to one value; when the symbol type of symbols included in time domain by the first PDCCH and the symbol type of symbols included in time domain by the first PRACH are not same, this parameter included in the third threshold equals to another value.

[0444] As one embodiment, "the third threshold depends on at least one of a symbol type of symbols included in time domain by the first PDCCH or a symbol type of symbols included in time domain by the first PRACH" includes that when the symbol type of symbols included in time domain by the first PDCCH is one type, one parameter included in the third threshold equals to one value; when the symbol type of symbols included in time domain by the first PDCCH is another type, this parameter included in the third threshold equals to another value.

[0445] As one embodiment, "the third threshold depends on at least one of a symbol type of symbols included in time domain by the first PDCCH or a symbol type of symbols included in time domain by the first PRACH" includes that when the symbol type of symbols included in time domain by the first PRACH is one type, one parameter included in the third threshold equals to one value; when the symbol type of symbols included in time domain by the first PRACH is another type, this parameter included in the third threshold equals to another value.

[0446] As one embodiment, "the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain" comprises: a value of a parameter N used when calculating the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain. T,2 As one embodiment, "the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain" comprises: a value of a parameter N used when calculating the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain.

[0447] As one embodiment, "the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain" comprises: a value of a parameter N used when calculating the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain. BWPSwitching As one embodiment, "the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain" comprises: a value of a parameter N used when calculating the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain.

[0448] As one embodiment, "the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain" comprises: a value of a parameter N used when calculating the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain. Delay As one embodiment, "the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain" comprises: a value of a parameter N used when calculating the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain.

[0449] As one embodiment, "the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain" comprises: a value of a parameter N used when calculating the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain. switch As one embodiment, "the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain" comprises: a value of a parameter N used when calculating the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain.

[0450] As one embodiment, "the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain" comprises: a value of a parameter N used when calculating the third threshold depends on at least one of a symbol type of symbols comprised by the first PDCCH in time domain or a symbol type of symbols comprised by the first PRACH in time domain. SBFDThe value of the parameter Δ depends on at least one of the symbol types of the symbols included in the time domain by the first PDCCH or the symbol types of the symbols included in the time domain by the opportunity occupied by the first PRACH. SBFD It is parameter N T，2 Parameter Δ BWPSwitching Parameter Δ Delay or parameter T switch The values ​​of parameters other than those mentioned above.

[0451] Example 9

[0452] Example 9 illustrates a schematic diagram of a first opportunity set and a second opportunity set according to an embodiment of this application, as shown in the attached diagram. Figure 9 As shown. In the appendix Figure 9 In the diagram, the horizontal axis represents time, each rectangle filled with a diagonal line represents an opportunity in the first opportunity set, each rectangle filled with a cross line represents an opportunity in the second opportunity set, and a rectangle filled with gray represents a synchronous broadcast block.

[0453] In Embodiment 9, the first PDCCH in this application carries a second field, which indicates an index of a synchronous broadcast block. The index of the synchronous broadcast block indicated by the second field of the first PDCCH is associated with a first opportunity set and a second opportunity set. The opportunity occupied by the first PRACH in this application belongs to the opportunity set between the first opportunity set and the second opportunity set and corresponds to the symbol type indicated by the first field of the first PDCCH, or the opportunity occupied by the first PRACH belongs to the opportunity set between the first opportunity set and the second opportunity set and corresponds to the PRACH configuration index indicated by the first field of the first PDCCH.

[0454] As an example, the technical feature "the first PDCCH carries a second field" includes the following meaning: the format adopted by the DCI carried by the first PDCCH includes the second field.

[0455] As an example, the technical feature "the first PDCCH carries the second field" includes the following meaning: the DCI including the second field is transmitted on the first PDCCH.

[0456] As an example, the technical feature "the first PDCCH carries a second field" includes the following meaning: the DCI including the second field is mapped onto the first PDCCH.

[0457] As an embodiment, the technical feature "the first PDCCH carries a second field" comprises the following meaning: a DCI comprising the second field is used to generate the first PDCCH.

[0458] As an embodiment, the technical feature "the first PDCCH carries a second field" comprises the following meaning: the second field is included in the information bits of a DCI carried by the first PDCCH.

[0459] As an embodiment, the first field is a SS / PBCH (synchronization signal / physical broadcast channel) index field.

[0460] As an embodiment, "the second field carried by the first PDCCH indicates an index of a synchronization broadcast block" comprises: the second field carried by the first PDCCH explicitly or implicitly indicates an index of a synchronization broadcast block.

[0461] As an embodiment, the synchronization broadcast block is a synchronization signal.

[0462] As an embodiment, the synchronization broadcast block is a physical broadcast channel (PBCH).

[0463] As an embodiment, the synchronization broadcast block comprises a synchronization signal and a physical broadcast channel.

[0464] As an embodiment, the synchronization broadcast block is a SS / PBCH block.

[0465] As an embodiment, the synchronization broadcast block is a synchronization signal block (SSB).

[0466] As an embodiment, the synchronization broadcast block is a synchronization signal of 6G or a physical broadcast channel of 6G.

[0467] As an embodiment, the index of the synchronization broadcast block is an index of a synchronization broadcast block in a plurality of synchronization broadcast blocks.

[0468] As an embodiment, the synchronization broadcast block indicates the index of the synchronization broadcast block.

[0469] As an embodiment, the index of the synchronization broadcast block is a non-negative integer.

[0470] As an embodiment, the first set of opportunities comprises at least one PRACH opportunity, and the second set of opportunities comprises at least one PRACH opportunity.

[0471] As an embodiment, the first set of opportunities comprises at least one RO, and the second set of opportunities comprises at least one RO.

[0472] As an embodiment, the first set of opportunities comprises ROs associated with a same synchronization broadcast block index, and the second set of opportunities comprises ROs associated with the same synchronization broadcast block index.

[0473] As an embodiment, the first set of opportunities and the second set of opportunities respectively comprise ROs indicated by a same PRACH configuration index that are in time domain belonging to different types of symbols.

[0474] As an embodiment, the first set of opportunities and the second set of opportunities respectively comprise ROs indicated by a same PRACH configuration index that overlap in time domain and different types of symbols.

[0475] As an embodiment, the first set of opportunities and the second set of opportunities respectively comprise ROs indicated by different two PRACH configuration indices of the plurality of PRACH configuration indices.

[0476] As an embodiment, the first set of opportunities and the second set of opportunities respectively comprise ROs indicated by different two PRACH configuration indices of the plurality of PRACH configuration indices that overlap in different types of symbols.

[0477] As an embodiment, “the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH associates a first set of opportunities and a second set of opportunities” comprises: the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH is associated with at least one opportunity in the first set of opportunities, and the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH is associated with at least one opportunity in the second set of opportunities.

[0478] As an embodiment, “the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH associates a first set of opportunities and a second set of opportunities” comprises: an opportunity in the first set of opportunities and an opportunity in the second set of opportunities are both associated with or mapped to the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH.

[0479] As an embodiment, the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH is associated with the first set of opportunities and the second set of opportunities comprises that the spatial filter corresponding to the opportunity in the first set of opportunities and the opportunity in the second set of opportunities is the same as the spatial filter of the synchronization broadcast block with the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH.

[0480] As an embodiment, the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH is associated with the first set of opportunities and the second set of opportunities comprises that the transmit spatial filter adopted by the opportunity in the first set of opportunities and the opportunity in the second set of opportunities has reciprocity or correspondence with the receive spatial filter of the synchronization broadcast block with the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH.

[0481] As an embodiment, the set of opportunities corresponding to the symbol type indicated by the first field carried by the first PDCCH is the set of opportunities configured for the symbol type indicated by the first field carried by the first PDCCH.

[0482] As an embodiment, the set of opportunities corresponding to the symbol type indicated by the first field carried by the first PDCCH is the set of opportunities to which the opportunity occupied by the PRACH transmitted on the symbol of the symbol type indicated by the first field carried by the first PDCCH belongs.

[0483] As an embodiment, the set of opportunities corresponding to the symbol type indicated by the first field carried by the first PDCCH is the set of opportunities that can only be used on the symbol of the symbol type indicated by the first field carried by the first PDCCH.

[0484] As an embodiment, the opportunity occupied by the first PRACH belongs to the set of opportunities corresponding to the symbol type indicated by the first field carried by the first PDCCH between the first set of opportunities and the second set of opportunities comprises that the set of opportunities corresponding to the symbol type indicated by the first field carried by the first PDCCH between the first set of opportunities and the second set of opportunities includes the opportunity occupied by the first PRACH.

[0485] As an embodiment, "the opportunity occupied by the first PRACH belongs to the opportunity set corresponding to the symbol type indicated by the first field carried by the first PDCCH among the first opportunity set and the second opportunity set" includes: the first opportunity set and the second opportunity set correspond to a first symbol type and a second symbol type respectively, and the symbol type indicated by the first field carried by the first PDCCH is one of the first symbol type or the second symbol type; when the symbol type indicated by the first field carried by the first PDCCH is the first symbol type, the opportunity occupied by the first PRACH belongs to the first opportunity set; when the symbol type indicated by the first field carried by the first PDCCH is the second symbol type, the opportunity occupied by the first PRACH belongs to the second opportunity set.

[0486] As an embodiment, "the opportunity occupied by the first PRACH belongs to the opportunity set corresponding to the symbol type indicated by the first field carried by the first PDCCH among the first opportunity set and the second opportunity set" includes: the symbol type of at least one symbol included by the opportunity occupied by the first PRACH in the time domain is the symbol type indicated by the first field carried by the first PDCCH.

[0487] As an embodiment, "the opportunity occupied by the first PRACH belongs to the opportunity set corresponding to the symbol type indicated by the first field carried by the first PDCCH among the first opportunity set and the second opportunity set" includes: the first node device selects the set of opportunities occupied by the first PRACH in the RO of the symbol type indicated by the first field carried by the first PDCCH.

[0488] As an embodiment, "the opportunity occupied by the first PRACH belongs to the opportunity set corresponding to the symbol type indicated by the first field carried by the first PDCCH among the first opportunity set and the second opportunity set" includes: the first node device initiates random access in the RO of the symbol type indicated by the first field carried by the first PDCCH.

[0489] As an embodiment, the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH is the opportunity set configured by the PRACH configuration index indicated by the first field carried by the first PDCCH.

[0490] As an embodiment, the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH is an opportunity set to which an opportunity occupied by the first PRACH belongs.

[0491] As an embodiment, the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH is an opportunity set configured by the PRACH configuration index indicated by the first field carried by the first PDCCH on a symbol of a symbol type to which the PRACH configuration index indicated by the first field carried by the first PDCCH is directed.

[0492] As an embodiment, the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH is an opportunity set configured by the PRACH configuration index indicated by the first field carried by the first PDCCH from a PRACH configuration table corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH.

[0493] As an embodiment, the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH is an opportunity set configured by a PRACH configuration index indicated by the first field carried by the first PDCCH from a PRACH configuration table corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH.

[0494] As an embodiment, “the opportunity occupied by the first PRACH belongs to the first opportunity set and the second opportunity set and the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH” includes that the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH is included in the first opportunity set and the second opportunity set.

[0495] As an embodiment, “the opportunity occupied by the first PRACH belongs to the first opportunity set and the second opportunity set and the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH” includes that the first node device selects the opportunity occupied by the first PRACH from the opportunity set configured by the PRACH configuration index indicated by the first field carried by the first PDCCH.

[0496] As an embodiment, "the opportunity occupied by the first PRACH belongs to the opportunity set between the first opportunity set and the second opportunity set and the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH" includes: the first opportunity set and the second opportunity set correspond to a first PRACH configuration index and a second PRACH configuration index respectively, the PRACH configuration index indicated by the first field carried by the first PDCCH is one of the first PRACH configuration index or the second PRACH configuration index; when the PRACH configuration index indicated by the first field carried by the first PDCCH is the first PRACH configuration index, the opportunity occupied by the first PRACH belongs to the first opportunity set; when the PRACH configuration index indicated by the first field carried by the first PDCCH is the second PRACH configuration index, the opportunity occupied by the first PRACH belongs to the second opportunity set.

[0497] As an embodiment, "the opportunity occupied by the first PRACH belongs to the opportunity set between the first opportunity set and the second opportunity set and the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH" includes: the first node device initiates random access in the RO in the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH.

[0498] Example 10

[0499] Embodiment 10 illustrates a schematic diagram of the first field according to an embodiment of the present application, as shown in FIG. 10. Figure 10 In FIG. 10, the thick-line box rectangular frame represents the first PDCCH, and the diagonal-line filled rectangular frame represents the first field. Figure 10

[0500] In Embodiment 10, the third information block in the present application is used to indicate at least one capability parameter of the sender of the third information block, and the third information block is used to determine that the first PDCCH in the present application carries the first field.

[0501] As an embodiment, the third information block is transmitted through an air interface or a wireless interface.

[0502] As an embodiment, the third information block includes all or part of high-layer signaling or physical-layer signaling.

[0503] As an embodiment, the third information block is earlier than the first information block.

[0504] As an embodiment, the third information block is later than the first information block.​

[0505] As an embodiment, the third information block comprises all or part of RRC signaling, or the third information block comprises all or part of MAC layer signaling.

[0506] As an embodiment, the third information block is transmitted through PUSCH or PUCCH (Physical Uplink Control Channel).

[0507] As an embodiment, the third information block is used to indicate the capability of the terminal in the application.

[0508] As an embodiment, the technical feature "the third information block is used to indicate at least one capability parameter of the sender of the third information block" includes the following meanings: the third information block is used by the terminal in the application to indicate at least one capability parameter of the terminal.

[0509] As an embodiment, the technical feature "the third information block is used to indicate at least one capability parameter of the sender of the third information block" includes the following meanings: all or part of the third information block is used to explicitly or implicitly indicate at least one capability parameter of the sender of the third information block.

[0510] As an embodiment, the third information block comprises IE "BandCombinationList", or the third information block comprises IE "UE-NR-Capability", or the third information block comprises IE "RF-Parameters", or the third information block comprises IE "BandNR", or the third information block comprises IE "Phy-Parameters", or the third information block comprises IE "Phy-ParametersCommon", or the third information block comprises IE "Phy-ParametersCommon-v19a0".

[0511] As an embodiment, the third information block comprises domain "SBFD-CFRA".

[0512] As an embodiment, the third information block is used to indicate at least one capability parameter of the sender of the third information block includes at least 1 parameter in IE "Phy-ParametersFRX-Diff".

[0513] As an embodiment, the third information block is used to indicate at least one capability parameter of the sender of the third information block includes at least 1 parameter in domain "Phy-ParametersCommon".

[0514] As one embodiment, the third information block is used to indicate at least one capability parameter of the transmitter of the third information block comprises at least one parameter in the field "BandNR".

[0515] As one embodiment, the third information block is used to indicate at least one capability parameter of the transmitter of the third information block comprises at least one parameter in the field "BandCombinationList".

[0516] As one embodiment, the third information block is used to indicate at least one capability parameter of the transmitter of the third information block comprises at least one parameter in the field "Phy-Parameters".

[0517] As one embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first field" comprises the following meaning: the third information block is used by the receiver of the third information block to determine that the first PDCCH carries the first field.

[0518] As one embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first field" comprises the following meaning: all or part of the third information block is used to explicitly or implicitly indicate that the first PDCCH carries the first field.

[0519] As one embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first field" comprises the following meaning: all or part of the third information block is used to explicitly or implicitly indicate that the transmitter of the third information block has the capability to support a target feature, and the capability to support the target feature is used to determine that the first PDCCH carries the first field.

[0520] As one embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first field" comprises the following meaning: all or part of the third information block is used to explicitly or implicitly indicate that the transmitter of the third information block has the capability to support that the first PDCCH carries the first field.

[0521] As one embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first field" comprises the following meaning: all or part of the third information block is used to explicitly or implicitly indicate that the transmitter of the third information block has the capability to support a target feature; and the first PDCCH can be configured to carry the first field only when the transmitter of the third information block has the capability to support the target feature.

[0522] As one embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first domain" includes the following meaning: all or part of the third information block is used to explicitly or implicitly indicate that the sender of the third information block has the capability to support the target feature; when the sender of the third information block has the capability to support the target feature, the signaling configures the first PDCCH to carry the first domain; otherwise, the signaling does not configure the first PDCCH to carry the first domain.

[0523] As one embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first domain" includes the following meaning: when the third information block is not provided, the first PDCCH does not carry the first domain; when the third information block is provided, the first PDCCH carries the first domain.

[0524] As one embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first domain" includes the following meaning: when the third information block is not provided, the terminal does not expect (or does not assume) that the first PDCCH carries the first domain; when the third information block is provided, the terminal expects (or assumes) that the first PDCCH carries the first domain.

[0525] As one embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first domain" includes the following meaning: when the third information block is not provided, the first PDCCH does not carry the first domain; when the third information block is provided, the signaling configures the first PDCCH to carry the first domain.

[0526] As one embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first domain" includes the following meaning: when the third information block is not provided, the terminal does not expect (or does not assume) that the first PDCCH carries the first domain; when the third information block is provided and the signaling configures the first PDCCH to carry the first domain, the terminal expects (or assumes) that the first PDCCH carries the first domain; when the third information block is provided and the signaling configures the first PDCCH to not carry the first domain, the terminal does not expect (or does not assume) that the first PDCCH carries the first domain.

[0527] As an embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first domain" includes the following meaning: the third information block indicates that the sender of the third information block has the capability of supporting SBFD; the capability of the sender of the third information block of supporting SBFD is used to determine that the first PDCCH carries the first domain.

[0528] As an embodiment, the technical feature "the third information block is used to determine that the first PDCCH carries the first domain" includes the following meaning: the third information block indicates that the sender of the third information block has the capability of supporting SBFD random access; the capability of the sender of the third information block of supporting SBFD random access is used to determine that the first PDCCH carries the first domain.

[0529] Example 11

[0530] Embodiment 11 illustrates a schematic diagram of a power ramping step according to an embodiment of the present application, as shown in FIG. 11. In FIG. 11, the horizontal axis represents time, the vertical axis represents power, and each rectangle represents a transmission of a random access channel. The rectangle filled with diagonal lines represents a first PRACH, and the power ramping step is used to determine the power ramping amplitude between two transmissions. Figure 11 Figure 11 In FIG. 11, the horizontal axis represents time, the vertical axis represents power, and each rectangle represents a transmission of a random access channel. The rectangle filled with diagonal lines represents a first PRACH, and the power ramping step is used to determine the power ramping amplitude between two transmissions.

[0531] In embodiment 11, the first information block in the present application is used to determine a power ramping step, the first PDCCH in the present application is used to determine a first count value, and the power ramping step and the first count value are used together to determine a transmission power value of the first PRACH in the present application.

[0532] As an embodiment, the UE can accurately set the transmission power value of the first PRACH by indicating the first count value through the first PDCCH for different symbol types, thereby ensuring the detection performance of the first PRACH.

[0533] As an embodiment, the unit of the power ramping step is dB.

[0534] As an embodiment, the unit of the power ramping step is milliwatt (mW).

[0535] As an embodiment, the unit of the power ramping step is dBm.

[0536] As an embodiment, the power ramping step is a non-negative integer.

[0537] As an embodiment, the power ramping step is not less than 0.

[0538] ​As one embodiment, the power ramping step is equal to one of 0 dB, 2 dB, 4 dB, or 6 dB.

[0539] As one embodiment, the power ramping step is a power-ramping factor.

[0540] As one embodiment, the power ramping step is a value of power adjustment (or change) at PRACH (or preamble) retransmission.

[0541] As one embodiment, the power ramping step is equal to a power ramping step for a symbol type indicated by the first field carried by the first PDCCH.

[0542] As one embodiment, the power ramping step is equal to a power ramping step for a PRACH configuration index indicated by the first field carried by the first PDCCH.

[0543] As one embodiment, the technical feature "the first information block is used to determine a power ramping step" includes the following meaning: the first information block is used by the first node device in this application to determine the power ramping step.

[0544] As one embodiment, the technical feature "the first information block is used to determine a power ramping step" includes the following meaning: all or part of the first information block is used to explicitly or implicitly indicate the power ramping step.

[0545] As one embodiment, the technical feature "the first information block is used to determine a power ramping step" includes the following meaning: the first information block and at least one parameter other than the parameters included in the first information block are used to determine the power ramping step.

[0546] As one embodiment, the technical feature "the first information block is used to determine a power ramping step" includes the following meaning: all or part of the first information block is used to explicitly or implicitly indicate a candidate power ramping step, the power ramping step is equal to a product between the candidate power ramping step and an expansion factor, and the expansion factor is predefined or configured.

[0547] As one embodiment, the first count value is a non-negative integer.

[0548] As one embodiment, the first count value is a positive integer.

[0549] As one embodiment, the first count value is not more than the maximum number of retransmission of PRACH (or preamble) for one cell.

[0550] As one embodiment, the maximum of the first count value is not more than 3.

[0551] As one embodiment, the maximum of the first count value is not more than 7.

[0552] As one embodiment, the maximum of the first count value is not more than 15.

[0553] As one embodiment, the possible value of the first count value is 0 or 1.

[0554] As one embodiment, the possible value of the first count value is initial transmission or retransmission.

[0555] As one embodiment, the first count value is the value of preamble power ramping counter.

[0556] As one embodiment, the first count value is the value of one variable employed by the first node device for random access procedure.

[0557] As one embodiment, the first count value is used for retransmission count of PRACH (or preamble).

[0558] As one embodiment, the first count value is used for determining the retransmission sequence number of PRACH (or preamble).

[0559] As one embodiment, the first count value is used for retransmission count of PRACH (or preamble) for one symbol type.

[0560] As one embodiment, the technical feature "the first PDCCH is used to determine the first count value" includes the following meaning: the first PDCCH is used by the first node device in this application to determine the first count value.

[0561] As one embodiment, the technical feature "the first PDCCH is used to determine the first count value" includes the following meaning: all or part of the DCI carried by the first PDCCH is used to explicitly or implicitly indicate the first count value.

[0562] As one embodiment, the technical feature "the first PDCCH is used to determine the first count value" includes the following meaning: at least one field in the DCI carried by the first PDCCH is used to explicitly or implicitly indicate the first count value.

[0563] As one embodiment, the technical feature "the first PDCCH is used to determine a first count value" includes the following meaning: the first count value is equal to a value of a target counter, at least one field in a DCI carried by the first PDCCH is used to determine whether the target counter is incremented by 1.

[0564] As one embodiment, the technical feature "the first PDCCH is used to determine a first count value" includes the following meaning: the first count value is equal to a value of a target counter, at least one field in a DCI carried by the first PDCCH indicates whether it is an initial transmission or a retransmission; whether the target counter is incremented by 1 when the at least one field in the DCI carried by the first PDCCH indicates a retransmission.

[0565] As one embodiment, the technical feature "the power ramping step and the first count value are used together to determine a transmission power value of the first PRACH" includes the following meaning: the power ramping step and the first count value are used together by the first node device in the present application to determine the transmission power value of the first PRACH.

[0566] As one embodiment, the technical feature "the power ramping step and the first count value are used together to determine a transmission power value of the first PRACH" includes the following meaning: the power ramping step and the first count value are used together to calculate the transmission power value of the first PRACH.

[0567] As one embodiment, the technical feature "the power ramping step and the first count value are used together to determine a transmission power value of the first PRACH" includes the following meaning: a product between the power ramping step and the first count value is used to calculate the transmission power value of the first PRACH.

[0568] As one embodiment, the technical feature "the power ramping step and the first count value are used together to determine a transmission power value of the first PRACH" includes the following meaning: a product between the power ramping step and a difference between the first count value and 1 is used to calculate the transmission power value of the first PRACH.

[0569] As one embodiment, the technical feature "the power ramping step and the first count value are used together to determine a transmission power value of the first PRACH" includes the following meaning: the transmission power value of the first PRACH is equal to a smaller value between a first upper limit value and a first power value, the first upper limit value is a maximum output power configured for the first node device, the first power value is linearly related to a product value between the power ramping step and a difference between the first count value and 1.

[0570] As an example, the technical feature "the power boost step size and the first count value are used together to determine the transmit power value of the first PRACH" includes the following meanings: the transmit power value of the first PRACH is equal to the smaller of the first upper limit value and the first power value, the first upper limit value is the maximum output power configured for the first node device, and the first power value and the product of the power boost step size and the first count value are linearly related.

[0571] As an example, the unit of the transmit power value of the first PRACH is dBm.

[0572] As an example, the unit of the transmit power value of the first PRACH is mW.

[0573] As an example, the transmit power value of the first PRACH is not greater than the maximum output power value configured for the first node device in the cell associated with the first PRACH.

[0574] As an example, the technical feature "the power boost step size and the first count value are used together to determine the transmit power value of the first PRACH" is achieved by satisfying the following formula:

[0575] P PRACH，b，f，c (i)=min{P CMAX，f，c (i), P PRACH，target，f，c +PL b，f，c [dBm]

[0576] Among them, P PRACH，b，f，c (i) represents the transmit power value of the first PRACH, P CMAX，f，c (i) represents the maximum output power value configured for the first node device, PL b，f，c P represents the path loss in the uplink BWP b on carrier f of cell c associated with the first PRACH. PRACH，target，f，c It is equal to the sum of the product between the configured preamble receive target power, the power boost step size and the difference between the first count value and 1.

[0577] As an example, the technical feature "the power boost step size and the first count value are used together to determine the transmit power value of the first PRACH" is achieved by satisfying the following formula:

[0578] P PRACH，b，f，c (i)=min{P CMAX，f，c (i), P PRACH，target，f，c +PL b，f，c [dBm]

[0579] Among them, PPRACH，b，f，c (i) represents a transmit power value of the first PRACH, P CMAX，f，c (i) represents a maximum output power value configured for the first node device, PL b，f，c represents a path loss in an uplink BWP b on a carrier f of a cell c associated with the first PRACH, P PRACH，target，f，c is equal to a sum of both a product value between a configured preamble reception target power, the power ramping step and the first count value.

[0580] As one embodiment, the technical feature "the power ramping step and the first count value are used together to determine a transmit power value of the first PRACH" is implemented by satisfying the following equation:

[0581] P PRACH，b，f，c (i) = min{P CMAX，f，c (i), P PRACH，target，f，c + PL b，f，c}[dBm]

[0582] wherein P PRACH，b，f，c (i) represents a transmit power value of the first PRACH, P CMAX，f，c (i) represents a maximum output power value configured for the first node device, PL b，f，c represents a path loss in an uplink BWP b on a carrier f of a cell c associated with the first PRACH, P PRACH，target，f，c is equal to a sum of three values, a product value between a configured preamble reception target power, a difference between the power ramping step and the first count value minus 1, and a configured power offset value.

[0583] Example 12

[0584] Embodiment 12 illustrates a structure block diagram of a processing apparatus in a terminal device of one embodiment, as shown in FIG. 12. In FIG. 12, the terminal device processing apparatus includes a first receiver 1201 and a first transmitter 1202. The first receiver 1201 includes the transmitter / receiver 456 (including the antenna 460), the reception processor 452 and the controller / processor 490 in FIG. 4 of the present application; the first transmitter 1202 includes the transmitter / receiver 456 (including the antenna 460), the transmission processor 455 and the controller / processor 490 in FIG. 4 of the present application. Figure 12 Figure 12 Figure 4 Figure 4

[0585] ​​​​In embodiment 12, the first receiver 1201 receives a first information block, the first information block indicating at least one PRACH configuration index; the first receiver 1201 receives a first PDCCH, the first PDCCH carrying a first field; the first transmitter 1202 transmits a first PRACH, the first PDCCH triggering transmission of the first PRACH, the first PRACH carrying a random access preamble sequence; when the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, the symbol type of at least one symbol included in a time domain by an opportunity occupied by the first PRACH being the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, the opportunity occupied by the first PRACH being the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; the symbol type of one symbol depending on a configuration of full duplex.

[0586] As an embodiment, the opportunity occupied by the first PRACH is a valid PRACH opportunity, validity of the opportunity occupied by the first PRACH depending on a length of an interval between the opportunity occupied by the first PRACH and an adjacent non-SBFD symbol in a time domain being greater than a first threshold, the first threshold being configured or predefined and / or related to a user equipment capability.

[0587] As an embodiment, the first receiver 1201 receives a second information block; wherein the second information block indicates a target sub-band, the validity of the opportunity occupied by the first PRACH depending on the opportunity occupied by the first PRACH belonging to the target sub-band in a frequency domain and a frequency domain interval between the opportunity occupied by the first PRACH and at least one boundary of the target sub-band in the frequency domain being not less than a second threshold, the second threshold being predefined or configured.

[0588] As an embodiment, a length of a time interval between the first PDCCH and the first PRACH in a time domain is not less than a third threshold, the third threshold depending on at least one of a symbol type of a symbol included by the first PDCCH in a time domain or a symbol type of a symbol included by the opportunity occupied by the first PRACH in a time domain.

[0589] As an embodiment, the first PDCCH carries a second field, the second field carried by the first PDCCH indicates an index of a synchronization broadcast block, the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH is associated with a first set of opportunities and a second set of opportunities, the opportunity occupied by the first PRACH belongs to a set of opportunities corresponding to the symbol type indicated by the first field carried by the first PDCCH among the first set of opportunities and the second set of opportunities, or the opportunity occupied by the first PRACH belongs to a set of opportunities corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH among the first set of opportunities and the second set of opportunities.

[0590] As an embodiment, the first transmitter 1202 transmits a third information block; wherein the third information block is used to indicate at least one capability parameter of a transmitter of the third information block, the third information block is used to determine that the first PDCCH carries the first field.

[0591] As an embodiment, the first information block is used to determine a power boosting step, the first PDCCH is used to determine a first count value, the power boosting step and the first count value are used together to determine a transmission power value of the first PRACH.

[0592] Example 13

[0593] Embodiment 13 illustrates a structural block diagram of a processing device in a base station device of an embodiment, as shown in FIG. 13. In FIG. 13, the base station device processing device 1300 includes a second transmitter 1301 and a second receiver 1302. The second transmitter 1301 includes the transmitter / receiver 416 (including the antenna 460), the transmission processor 415 and the controller / processor 440 in the application embodiment shown in FIG. 4; the second receiver 1302 includes the transmitter / receiver 416 (including the antenna 460), the reception processor 412 and the controller / processor 440 in the application embodiment shown in FIG. 4. Figure 13 Figure 13 Figure 4 Figure 4

[0594] ​​​​In embodiment 13, the second transmitter 1301 transmits a first information block, the first information block indicating at least one PRACH configuration index; the second transmitter 1301 transmits a first PDCCH, the first PDCCH carrying a first field; the second receiver 1302 receives a first PRACH, the first PDCCH triggering transmission of the first PRACH, the first PRACH carrying a random access preamble sequence; when the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, a symbol type of at least one symbol included in a time domain of an opportunity occupied by the first PRACH is the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, the opportunity occupied by the first PRACH is an opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; a symbol type of one symbol depends on a configuration of full duplex.

[0595] As one embodiment, the opportunity occupied by the first PRACH is a valid PRACH opportunity, validity of the opportunity occupied by the first PRACH depends on that a length of an interval between the opportunity occupied by the first PRACH and an adjacent non-SBFD symbol in a time domain is greater than a first threshold, the first threshold being configured or predefined and / or related to a user equipment capability.

[0596] As one embodiment, the second transmitter 1301 transmits a second information block; wherein the second information block indicates a target sub-band, the validity of the opportunity occupied by the first PRACH depends on that the opportunity occupied by the first PRACH belongs to the target sub-band in a frequency domain and a frequency domain interval between the opportunity occupied by the first PRACH and at least one boundary of the target sub-band in the frequency domain is not less than a second threshold, the second threshold being predefined or configured.

[0597] As one embodiment, a length of a time interval between the first PDCCH and the first PRACH in a time domain is not less than a third threshold, the third threshold depending on at least one of a symbol type of a symbol included in a time domain of the first PDCCH or a symbol type of a symbol included in a time domain of the opportunity occupied by the first PRACH.

[0598] As an embodiment, the first PDCCH carries a second field, the second field carried by the first PDCCH indicates an index of a synchronization broadcast block, the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH is associated with a first set of opportunities and a second set of opportunities, the opportunity occupied by the first PRACH belongs to a set of opportunities corresponding to the symbol type indicated by the first field carried by the first PDCCH among the first set of opportunities and the second set of opportunities, or the opportunity occupied by the first PRACH belongs to a set of opportunities corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH among the first set of opportunities and the second set of opportunities.

[0599] As an embodiment, the second receiver 1302 receives a third information block; the third information block is used to indicate at least one capability parameter of a transmitter of the third information block, and the third information block is used to determine that the first PDCCH carries the first field.

[0600] As an embodiment, the first information block is used to determine a power boosting step, the first PDCCH is used to determine a first count value, and the power boosting step and the first count value are used together to determine a transmission power value of the first PRACH.

[0601] A person of ordinary skill in the art can understand that all or part of the steps of the above method can be instructed by a program to complete the relevant hardware, and the program can be stored in a computer readable storage medium, such as a read-only memory, a hard disk, or an optical disk, etc. Alternatively, all or part of the steps of the above embodiment can also be implemented by using one or more integrated circuits. Correspondingly, 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 combination of software and hardware. The terminal device or the base station device or the UE or the terminal in the present application includes but is not limited to a mobile phone, a tablet computer, a notebook computer, a network card, a low-power device, an eMTC device, an NB-IoT device, a vehicle-mounted communication device, a flight vehicle, an airplane, a drone, a remote control airplane, a test device, a test equipment, a test instrument, etc. The base station device or the base station or the network side device in the present application includes but is not limited to a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission reception point TRP, a relay satellite, a satellite base station, an air base station, a test device, a test equipment, a test instrument, etc.

[0602] Those skilled in the art will appreciate that the application can be practiced by other than the described embodiments, which are presented for purposes of illustration and not of limitation, without departing from the core or essential teaching of the application. The present embodiments are thus to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.

Claims

1. A method for use in a terminal, characterized by, Comprising: receiving a first information block, the first information block indicating at least one PRACH configuration index; receiving a first PDCCH, the first PDCCH carrying a first field; transmitting a first PRACH, the first PDCCH triggering transmission of the first PRACH, the first PRACH carrying a random access preamble sequence; wherein, when the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, the symbol type of at least one symbol included in a time domain by the opportunity occupied by the first PRACH is the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, the opportunity occupied by the first PRACH is the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; the symbol type of one symbol depends on the configuration of full duplex.

2. The method of claim 1, wherein, The opportunity occupied by the first PRACH is a valid PRACH opportunity, the validity of the opportunity occupied by the first PRACH depends on the length of the interval between the opportunity occupied by the first PRACH in the time domain and the adjacent non-SBFD symbol being greater than a first threshold, the first threshold being configured or predefined and / or related to the user equipment capability.

3. The method according to claim 1 or 2, characterized in that, Comprising: receiving a second information block; wherein, the second information block indicates a target sub-band, the validity of the opportunity occupied by the first PRACH depends on the opportunity occupied by the first PRACH belonging to the target sub-band in the frequency domain and the frequency domain interval between the opportunity occupied by the first PRACH in the frequency domain and at least one boundary of the target sub-band being not less than a second threshold, the second threshold being predefined or configured.

4. The method according to any one of claims 1 to 3, characterized in that, The length of the time interval in the time domain between the first PDCCH and the first PRACH is not less than a third threshold, the third threshold depending on at least one of the symbol type of the symbol included in the time domain by the first PDCCH or the symbol type of the symbol included in the time domain by the opportunity occupied by the first PRACH.

5. The method according to any one of claims 1 to 4, characterized in that, The first PDCCH carries a second field, the second field carried by the first PDCCH indicating the index of one synchronization broadcast block, the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH associating a first opportunity set and a second opportunity set, the opportunity occupied by the first PRACH belonging to the opportunity set corresponding to the symbol type of the first PDCCH carried by the first field indicated by the first PDCCH or the opportunity occupied by the first PRACH belonging to the opportunity set corresponding to the PRACH configuration index indicated by the first field carried by the first PDCCH between the first opportunity set and the second opportunity set.

6. The method according to any one of claims 1 to 5, characterized in that, Comprising: transmitting a third information block; The third information block is used to indicate at least one capability parameter of a transmitter of the third information block, and the third information block is used to determine that the first PDCCH carries the first field.

7. The method according to any one of claims 1 to 6, characterized in that, The first information block is used to determine a power boosting step, and the first PDCCH is used to determine a first counting value, and the power boosting step and the first counting value are used together to determine a transmission power value of the first PRACH.

8. A terminal, characterized by comprising: The terminal comprises one or more processors and a memory; the memory is coupled with the one or more processors, and the memory is used to store computer program codes, the computer program codes comprise computer instructions, and the one or more processors invoke the computer instructions to make the terminal execute the method in any one of claims 1-7.

9. A method for use in a base station, characterized by, Comprise: sending a first information block, the first information block indicating at least one PRACH configuration index; sending a first PDCCH, the first PDCCH carrying a first field; receiving a first PRACH, the first PDCCH triggering transmission of the first PRACH, the first PRACH carrying a random access preamble sequence; When the first information block indicates only one PRACH configuration index, the first field carried by the first PDCCH indicates one symbol type, and the symbol type of at least one symbol included in the opportunity occupied by the first PRACH in the time domain is the symbol type indicated by the first field carried by the first PDCCH; when the first information block indicates multiple PRACH configuration indexes, the first field carried by the first PDCCH indicates one PRACH configuration index from the multiple PRACH configuration indexes, and the opportunity occupied by the first PRACH is the opportunity indicated by the PRACH configuration index indicated by the first field carried by the first PDCCH; and the symbol type of one symbol depends on the configuration of full duplex.

10. The method of claim 9, wherein, The opportunity occupied by the first PRACH is a valid PRACH opportunity, and the validity of the opportunity occupied by the first PRACH depends on that the interval length between the opportunity occupied by the first PRACH in the time domain and the adjacent non-SBFD symbol is greater than a first threshold value, and the first threshold value is configured or predefined and / or related to the capability of the user equipment.

11. The method according to claim 9 or 10, characterized in that, Comprise: sending a second information block; The second information block indicates a target sub-band, and the validity of the opportunity occupied by the first PRACH depends on that the opportunity occupied by the first PRACH belongs to the target sub-band in the frequency domain and the frequency domain interval between the opportunity occupied by the first PRACH in the frequency domain and at least one boundary of the target sub-band is not less than a second threshold value, and the second threshold value is predefined or configured.

12. The method according to any one of claims 9 to 11, characterized in that, A time interval length in time domain between the first PDCCH and the first PRACH is not less than a third threshold, the third threshold is dependent on at least one of a symbol type of a symbol included in the first PDCCH in time domain or a symbol type of a symbol included in an occasion occupied by the first PRACH in time domain.

13. The method according to any one of claims 9 to 12, characterized in that, The first PDCCH carries a second field, the second field carried by the first PDCCH indicates an index of a synchronization broadcast block, the index of the synchronization broadcast block indicated by the second field carried by the first PDCCH associates a first set of occasions and a second set of occasions, the occasion occupied by the first PRACH belongs to a set of occasions corresponding to the symbol type indicated by the first field carried by the first PDCCH among the first set of occasions and the second set of occasions, or the occasion occupied by the first PRACH belongs to a set of occasions corresponding to a PRACH configuration index indicated by the first field carried by the first PDCCH among the first set of occasions and the second set of occasions.

14. The method according to any one of claims 9 to 13, characterized in that, Comprising: receiving a third information block; wherein the third information block is used to indicate at least one capability parameter of a transmitter of the third information block, the third information block is used to determine that the first PDCCH carries the first field.

15. The method according to any one of claims 9 to 14, characterized in that, The first information block is used to determine a power boosting step, the first PDCCH is used to determine a first count value, the power boosting step and the first count value are used together to determine a transmission power value of the first PRACH.

16. A base station, comprising: The base station comprises one or more processors and a memory; the memory is coupled with the one or more processors; the memory is configured to store computer program codes, the computer program codes comprise computer instructions, the one or more processors invoke the computer instructions to enable the base station to perform the method according to any one of claims 9-15.

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