Communication method and communication system

Abstract

The present disclosure relates to the technical field of communications, and provides a communication method and a communication system. The method comprises: determining first information; and determining a power parameter of a physical random access channel (PRACH) on a sub-band full duplex (SBFD) time unit on the basis of the first information. In the present disclosure, a terminal can determine the first information, and determines the power parameter of the PRACH on the SBFD time unit on the basis of the first information, thereby enabling the power parameter of the PRACH on the SBFD time unit to be different from a power parameter of the PRACH on a non-SBFD time unit. By means of the differentiated power parameter configuration, the cross-link interference between other terminals can be reduced, or the effect of the cross-link interference between network devices on the transmission performance of the PRACH can be overcome.

Description

A communication method and a communication system TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and in particular to a communication method and a communication system. BACKGROUND

[0002] The random access procedure is a series of steps performed by a terminal in a mobile communication network to establish or restore uplink synchronization with a base station. This procedure is crucial for scenarios such as the first access to the network, handover, reconnection after radio link failure, and uplink resource request.

[0003] SUMMARY

[0004] The present disclosure provides a communication method and a communication system. According to the present disclosure, a terminal can determine a power parameter of a physical random access channel (PRACH) on a subband full duplex (SBFD) symbol according to first information, so as to cause the power parameter of the PRACH on an SBFD time unit to be different from the power parameter of the PRACH on a non-SBFD time unit. Through the differentiated power parameter configuration, the cross-link interference between terminals on other terminals can be reduced, or the influence of the cross-link interference between network devices on the PRACH transmission performance can be overcome.

[0005] The first aspect of the present disclosure provides a communication method, performed by a terminal, the method comprising: determining first information; determining a power parameter of a PRACH on an SBFD time unit according to the first information.

[0006] The second aspect of the present disclosure provides a communication method, performed by a network device, the method comprising: sending first information to a terminal; wherein the first information is used to determine a power parameter of a PRACH on an SBFD time unit.

[0007] The third aspect of the present disclosure provides a communication method, comprising: a network device sending first information to a terminal; and the terminal receiving the first information sent by the network device and determining a power parameter of a PRACH on an SBFD time unit according to the first information.

[0008] The fourth aspect of the present disclosure provides a terminal, comprising: a processing module configured to determine first information; and determine a power parameter of a PRACH on an SBFD time unit according to the first information.

[0009] A fifth aspect of the present disclosure provides a network device, comprising: a transceiver configured to send first information to a terminal; wherein the first information is used to determine a power parameter of a PRACH on a SBFD time unit.

[0010] A sixth aspect of the present disclosure provides a communication device, comprising: one or more processors; wherein the processor is configured to execute the method of the first aspect or the second aspect.

[0011] A seventh aspect of the present disclosure provides a communication system, comprising: a terminal and a network device, wherein the terminal is configured to implement the method of the first aspect, and the network device is configured to implement the method of any one of the second aspect.

[0012] An eighth aspect of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer executable instructions; the computer executable instructions are executed by a processor to implement the method of the first aspect or the second aspect.

[0013] A ninth aspect of the present disclosure provides a computer program product, comprising a computer program, wherein the computer program is executed by a processor to implement the method of the first aspect or the second aspect.

[0014] Additional aspects and advantages of the present disclosure will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily appreciated from the following description, including the following:

[0016] FIG. 1 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0017] FIG. 2 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0018] FIG. 3 is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure;

[0019] FIG. 4 is a schematic diagram of a flow of a communication method according to an embodiment of the present disclosure;

[0020] FIG. 5 is a schematic diagram of a flow of a communication method according to an embodiment of the present disclosure;

[0021] FIG. 6 is a schematic diagram of a flow of a communication method according to an embodiment of the present disclosure;

[0022] FIG. 7 is a flow diagram of a communication method according to an embodiment of the present disclosure;

[0023] FIG. 8 is a block diagram of a network device according to an embodiment of the present disclosure;

[0024] FIG. 9 is a block diagram of a terminal according to an embodiment of the present disclosure;

[0025] FIG. 10 is a structural diagram of a communication device according to an embodiment of the present disclosure;

[0026] FIG. 11 is a structural diagram of a chip according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as limiting the present disclosure. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0028] To facilitate understanding, first introduce the terms related to the embodiments of the present disclosure.

[0029] 1. Subband Full Duplex (SBFD)

[0030] To improve uplink (UL) coverage and throughput, SBFD is studied. Specifically, a carrier component (CC) is divided into multiple subbands (SBs) in the frequency domain on the downlink (DL) or flexible (F) symbol, the multiple SBs including one UL subband and at least one (1 or 2) DL subband, and the base station can transmit DL signals in the DL subband and simultaneously receive UL signals in the UL subband. Wherein, the DL or F symbol is the symbol indicated as DL or F by TDD-UL-DL-ConfigCommon or TDD-UL-DL-ConfigDedicated configuration or DCI2-0. When a symbol contains both DL subband and UL subband in the frequency domain, it can be called SBFD symbol. Similarly, when a time slot contains at least one SBFD symbol among the multiple symbols contained in the time slot, the time slot can be called SBFD time slot. As shown in FIG. 1, time slot #0 is a DL time slot containing 14 DL symbols, time slots #1-3 are SBFD time slots each containing 14 SBFD symbols, and time slot #4 is a UL time slot containing 14 UL symbols.

[0031] In addition, there can be a guard band (GB) between the DL subband and the UL subband to reduce the interference between the DL signal in the DL subband and the UL signal in the UL subband through frequency domain isolation.

[0032] In the SBFD symbol, the GB and the DL subband are unavailable for UL transmission, and the UL subband is available for UL transmission. In the SBFD symbol, the frequency domain range available for UL transmission can be referred to as an UL available frequency domain range, and the frequency domain range unavailable for UL transmission can be referred to as an UL unavailable frequency domain range. According to the above analysis, the UL frequency domain range of the non-SBFD symbol and the SBFD symbol is different. The UL available frequency domain range is the UL frequency domain range on the CC. In the SBFD symbol, the UL available frequency domain range on the UL BandWidth Part (BWP) refers to the frequency domain range overlapping the UL available frequency domain range on the CC.

[0033] 2. Random Access (RA)

[0034] When a user equipment (UE) is in an idle state, the UE measures the received signal strength and other information of a Synchronized Signal Block (SSB) beam when initially accessing a cell, and selects an optimal SSB beam. The UE sends a PRACH signal on a Random Access Channel (RACH) occasion (RO) in the direction of the optimal SSB beam to perform random access. In addition, the UE can send a PRACH signal on an RO to perform random access in other states. Random access includes Contention-Based Random Access (CBRA) and Contention-Free Random Access (CFRA), where there are multiple UEs using the same preamble sequence (Preamble) in CBRA, that is, the PRACH signals of 2 UEs collide, which can cause random access to fail.

[0035] As shown in FIG. 2, on the SBFD symbol, the UE can send an uplink signal on the UL SB. Therefore, compared with configuring an RO only on the UL or F symbol, configuring an RO on the SBFD symbol can increase the number of ROs. A UE (SBFD-aware UE) that can identify the SBFD symbol configuration can perform random access on the SBFD symbol configuration RO, which can reduce the access delay and also reduce the probability of PRACH signal collision between different UEs in CBRA.

[0036] Considering the large difference of interference between SBFD symbols and non-SBFD symbols, the power parameters of PRACH transmission can be configured differently for SBFD and non-SBFD symbols, so that SBFD aware UEs can transmit at different powers for SBFD and non-SBFD symbols: reduce the PRACH transmission power on SBFD symbols to reduce the UE-UE cross-link interference (CLI) to other UEs; increase the PRACH transmission power on SBFD symbols to overcome the impact of gNB-gNB CLI on PRACH transmission performance.

[0037] 3、Four-step random access (4-step RA) and two-step random access (2-step RA)

[0038] According to the number of steps of the RA procedure, it can be divided into 4-step RA and 2-step RA, and according to whether the preamble used by the UE will conflict with the preamble of other UEs, it can be divided into CBRA and CFRA.

[0039] In CBRA with 4-step RA type, the UE sends Msg1 and Msg3, and the gNB sends Msg2 and Msg4, which can complete random access in 4 steps. Among them, Msg1 is a PRACH signal.

[0040] In CBRA with 2-step RA type, the UE sends MsgA and the gNB sends MsgB, which can complete random access in 2 steps. Among them, MsgA includes MsgA-PRACH and MsgA-PUSCH signals.

[0041] In CFRA with 4-step RA type, the UE sends Msg1 and the gNB sends Msg2, which can complete random access in 2 steps. Among them, Msg1 is a PRACH signal. In addition, the gNB needs to configure the preamble used by the UE's PRACH signal in advance

[0042] In CFRA with 2-step RA type, the UE sends MsgA and the gNB sends MsgB, which can complete random access in 2 steps. Among them, MsgA includes MsgA-PRACH and MsgA-PUSCH signals. In addition, the gNB needs to configure the preamble used by the UE's MsgA signal and the PUSCH resource in advance.

[0043] Specifically, the related power parameter configuration in 4-step RA is as follows:

[0044] preambleReceivedTargetPower: target received power of PRACH transmission;

[0045] powerRampingStep: power ramping step of PRACH transmission.

[0046] After PRACH transmission failure, if the beam does not switch, the next PRACH transmission power increases by powerRampingStep; after PRACH transmission failure, if the beam switches, the next PRACH transmission power remains unchanged.

[0047] Specifically, the related power parameters in 2-step RA are configured as follows:

[0048] msgA-PreambleReceivedTargetPower-r16: target received power of MsgA-PRACH transmission;

[0049] msgA-PreamblePowerRampingStep-r16: power ramping step of MsgA-PRACH transmission.

[0050] After MsgA-PRACH transmission failure, if the beam does not switch, the next MsgA-PRACH transmission power increases by msgA-Preamble Power Ramping Step-r16; after MsgA-PRACH transmission failure, if the beam switches, the next MsgA-PRACH transmission power remains unchanged.

[0051] In addition, in 4-step RA and 2-step RA, the maximum transmission power of PRACH and MsgA-PRACH is PCMAX.

[0052] Embodiments of the present disclosure provide a communication method and a communication system.

[0053] In a first aspect, embodiments of the present disclosure provide a communication method, performed by a terminal, the method comprising: determining first information; determining a power parameter of PRACH on a SBFD time unit according to the first information.

[0054] The terminal can determine the first information and determine the power parameter of PRACH on the SBFD time unit according to the first information, so as to make the power parameter of PRACH on the SBFD time unit different from the power parameter of PRACH on the non-SBFD time unit. Through the differentiated power parameter configuration, the cross-link interference between terminals of other terminals can be reduced, or the influence of the cross-link interference between network devices on the PRACH transmission performance can be overcome.

[0055] In some embodiments of the first aspect, the power parameter comprises at least one of:

[0056] a maximum transmit power; a target receive power; a power ramping step.

[0057] In some embodiments of the first aspect, the power parameter of the PRACH is different in at least one of the SBFD time unit and the non-SBFD time unit.

[0058] In some embodiments of the first aspect, the first information comprises configuration information of the power parameter of the PRACH in the SBFD time unit.

[0059] In some embodiments of the first aspect, the configuration information comprises at least one of:

[0060] first difference information, the first difference information being used to determine a difference of the power parameter of a first signal in the SBFD time unit and the non-SBFD time unit, the first signal being an uplink signal different from the PRACH;

[0061] second difference information, the second difference information being used to determine a difference of the power parameter of the PRACH in the SBFD time unit and the non-SBFD time unit;

[0062] a conversion parameter between the first difference information and the second difference information;

[0063] a power parameter of the PRACH in the non-SBFD time unit;

[0064] a power parameter of the PRACH in the SBFD time unit.

[0065] In some embodiments of the first aspect, the difference of the power parameter comprises at least one of:

[0066] a difference of a maximum transmit power; a difference of a target receive power; a difference of a power ramping step.

[0067] In some embodiments of the first aspect, the difference of the power parameter of the PRACH is or is not in a random access channel, RACH, resource configuration.

[0068] In some embodiments of the first aspect, the power parameter of the PRACH in the SBFD time unit is or is not in the RACH resource configuration.

[0069] In some embodiments of the first aspect, the method further comprises: receiving second information sent by the network device; wherein the second information is used to indicate whether the second difference information is determined according to the first difference information.

[0070] In some embodiments of the first aspect, the method further includes that the configuration information includes both the first difference information and the second difference information, and the second difference information is used to determine the power parameter of PRACH in the SBFD time unit.

[0071] In some embodiments of the first aspect, the method further includes that a first parameter of the power parameter of PRACH in the SBFD time unit and the non-SBFD time unit is configured to be the same, and the first parameter of PRACH in the SBFD time unit is determined using the first parameter in the non-SBFD time unit.

[0072] In some embodiments of the first aspect, the determining the first information includes receiving the first information sent by the network device.

[0073] In some embodiments of the first aspect, the first information is carried by at least one of the following:

[0074] a radio resource control (RRC) message, a media access control (MAC) control element (CE), and downlink control information (DCI).

[0075] In a second aspect, the embodiments of the present disclosure provide a communication method, executed by a network device, the method comprising: sending first information to a terminal; wherein the first information is used to determine a power parameter of PRACH in a SBFD time unit.

[0076] In some embodiments of the second aspect, the terminal can determine the first information, and determine the power parameter of PRACH in the SBFD time unit according to the first information, so as to make the power parameter of PRACH in the SBFD time unit different from the power parameter of PRACH in the non-SBFD time unit. Through the differentiated power parameter configuration, the cross-link interference between terminals can be reduced, or the influence of the cross-link interference between network devices on the PRACH transmission performance can be overcome.

[0077] In some embodiments of the second aspect, the power parameter includes at least one of the following:

[0078] a maximum transmit power, a target receive power, and a power ramping step.

[0079] In some embodiments of the second aspect, at least one parameter of the power parameter of PRACH in the SBFD time unit and the non-SBFD time unit is different.

[0080] In some embodiments of the second aspect, the first information comprises configuration information of power parameters of PRACH in SBFD time units.

[0081] In some embodiments of the second aspect, the configuration information comprises at least one of:

[0082] first difference information, the first difference information being used to determine a difference of power parameters of a first signal in SBFD time units and non-SBFD time units, the first signal being an uplink signal different from PRACH;

[0083] second difference information, the second difference information being used to determine a difference of power parameters of PRACH in SBFD time units and non-SBFD time units;

[0084] a conversion parameter between the first difference information and the second difference information;

[0085] a power parameter of PRACH in non-SBFD time units;

[0086] a power parameter of PRACH in SBFD time units.

[0087] In some embodiments of the second aspect, the difference of power parameters comprises at least one of:

[0088] a difference of maximum transmit power; a difference of target receive power; a difference of power ramping step.

[0089] In some embodiments of the second aspect, the difference of power parameters of PRACH is or is not in a RACH resource configuration.

[0090] In some embodiments of the second aspect, the power parameter of PRACH in SBFD time units is or is not in a RACH resource configuration.

[0091] In some embodiments of the second aspect, the method further comprises: sending second information to the terminal; wherein the second information is used to indicate whether the second difference information is determined according to the first difference information.

[0092] In some embodiments of the second aspect, the configuration information comprises both the first difference information and the second difference information, and the second difference information is used to determine a power parameter of PRACH in SBFD time units.

[0093] In some embodiments of the second aspect, a first parameter of power parameters of PRACH in SBFD time units and non-SBFD time units is configured to be the same, and the first parameter of PRACH in SBFD time units uses the first parameter in non-SBFD time units.

[0094] In some embodiments of the second aspect, the first information is carried by at least one of the following:

[0095] an RRC message; a MAC CE; DCI.

[0096] In a third aspect, the embodiments of the present disclosure provide a communication method, comprising: a network device sending first information to a terminal; and the terminal receiving the first information sent by the network device and determining a power parameter of PRACH on a SBFD time unit according to the first information.

[0097] In a fourth aspect, the embodiments of the present disclosure provide a network device, comprising: a processing module configured to determine first information; and determine a power parameter of PRACH on a SBFD time unit according to the first information.

[0098] In a fifth aspect, the embodiments of the present disclosure provide a terminal, comprising: a transceiver module configured to send first information to a terminal; wherein the first information is used to determine a power parameter of PRACH on a SBFD time unit.

[0099] In a sixth aspect, the embodiments of the present disclosure provide a communication device, comprising: one or more processors; wherein the processor is configured to execute the method according to the first aspect or the second aspect.

[0100] In a seventh aspect, the embodiments of the present disclosure provide a communication system, comprising: a network device and a terminal; the network device executes the method according to the first aspect, and the terminal executes the method according to the second aspect.

[0101] In an eighth aspect, the embodiments of the present disclosure provide a computer storage medium, wherein the computer storage medium stores computer executable instructions; the computer executable instructions are executed by a processor to implement the method according to the first aspect or the second aspect.

[0102] In a ninth aspect, the embodiments of the present disclosure provide a computer program product, comprising a computer program; the computer program is executed by a processor to implement the method according to the first aspect or the second aspect.

[0103] In a tenth aspect, the embodiments of the present disclosure provide a chip or chip system. The chip or chip system comprises a processing circuit configured to execute the method according to the first aspect or the second aspect.

[0104] It can be understood that the network device, the terminal, the communication system, and the storage medium are used to execute the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects achieved by the network device, the terminal, the communication system, and the storage medium can refer to the beneficial effects in the corresponding method, which will not be described here.

[0105] The embodiments of the present disclosure propose a communication method and a communication system. In some embodiments, the communication method and the information processing method, the information sending method, the information receiving method, and the like can be replaced with each other, the communication device and the information processing device, the information sending device, the information receiving device, and the like can be replaced with each other, and the information processing system, the communication system, the information sending system, the information receiving system, and the like can be replaced with each other.

[0106] The embodiments of the present disclosure are not exhaustive, but are only a part of the embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation manners in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, the steps of different embodiments or part or all of the steps of different embodiments can be combined arbitrarily, an embodiment can be combined with the optional implementation manners of other embodiments arbitrarily.

[0107] In the embodiments of the present disclosure, the terms and / or descriptions between the embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form a new embodiment according to the logical relationship between them.

[0108] The terms used in the embodiments of the present disclosure are only for the purpose of describing the specific embodiments, and not as a limitation on the present disclosure.

[0109] In the embodiments of the present disclosure, unless otherwise specified, the elements expressed in singular form, such as “one”, “a”, “the”, “above”, “said”, “preceding”, “this”, and the like, can represent “one and only one”, or “one or more”, “at least one”, and the like. For example, in the case of using articles such as “a”, “an”, “the” in English, the noun after the article can be understood as singular expression, or as plural expression.

[0110] In the embodiments of the present disclosure, “a plurality of” means two or more.

[0111] In some embodiments, the terms “at least one of,” “at least one of,” “at least one of,” “one or more,” “a plurality of,” “multiple,” and the like can be replaced with each other.

[0112] In the description of the embodiments of the present disclosure, the description modes such as “at least one of A, B, and C”, “A and / or B and / or C”, and the like include any one of A, B, and C existing alone, and also include any combination of any number of A, B, and C, and each case can exist alone; for example, “at least one of A, B, and C” includes a case of A alone, a case of B alone, a case of C alone, a case of a combination of A and B, a case of a combination of A and C, a case of a combination of B and C, and a case of a combination of A and B and C; for example, A and / or B includes a case of A alone, a case of B alone, and a case of a combination of A and B.

[0113] In some embodiments, the description modes such as “A in a case, B in another case”, “in response to a case A, in response to another case B”, and the like can include the following technical solutions according to the cases: A is executed regardless of B, that is, A in some embodiments; B is executed regardless of A, that is, B in some embodiments; A and B are selectively executed, that is, A and B are selected from A and B to be executed in some embodiments; A and B are both executed, that is, A and B in some embodiments. When there are more branches of A, B, C, and the like, it is similar to the above.

[0114] The prefix words of "first", "second" and the like in the embodiments of the present disclosure are merely used to distinguish different description objects, and do not constitute limitation on the position, order, priority, quantity or content of the description objects. The description objects are described in the claims or embodiments, and should not be construed as redundant limitation because of the use of the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields". "First" and "second" do not limit whether the "fields" modified thereby are in the same message, nor do they limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different. For example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and their types can be the same or different. For another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

[0115] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0116] In some embodiments, the terms "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0117] In some embodiments, the terms "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", "above" and the like can be replaced with each other, and the terms "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below" and the like can be replaced with each other.

[0118] In some embodiments, an apparatus or the like can be interpreted as an entity, and can also be interpreted as virtual, and the name thereof is not limited to the name described in the embodiments, and the terms "apparatus", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject" and the like can be replaced with each other.

[0119] In some embodiments, a "network" can be interpreted as an apparatus (for example, an access network device, a core network device, and the like) included in the network.

[0120] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like can be replaced with each other.

[0121] In some embodiments, the terms "terminal," "terminal device," "user equipment (UE)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," and so on can be replaced with each other.

[0122] In some embodiments, the access network device, the core network device, or the network device can be replaced with a terminal. For example, the embodiments of the present disclosure can also be applied to a structure in which communication between the access network device, the core network device, or the network device and the terminal is replaced with communication between a plurality of terminals (for example, also referred to as device-to-device (D2D), vehicle-to-everything (V2X), and so on). In this case, the terminal can also be configured to have all or part of the functions of the access network device. In addition, the language of "uplink," "downlink," and so on can also be replaced with language corresponding to the inter-terminal communication (for example, "side"). For example, the uplink channel, the downlink channel, and so on can be replaced with the side channel, and the uplink, the downlink, and so on can be replaced with the side link.

[0123] In some embodiments, the terminal can be replaced with the access network device, the core network device, or the network device. In this case, the access network device, the core network device, or the network device can also be configured to have all or part of the functions of the terminal.

[0124] In some embodiments, the data, information, etc. can be obtained in compliance with the laws and regulations of the country where the location is situated.

[0125] In some embodiments, the data, information, etc. can be obtained after obtaining the consent of the user.

[0126] In some embodiments, the threshold mentioned in the embodiments can be a numerical value, a constant, or some fixed value, etc.

[0127] In some embodiments, the positioning and the location mentioned in the embodiments can have the same meaning.

[0128] In addition, each element, each row, or each column in the table of the embodiments of the disclosure can be implemented as an independent embodiment, and any element, any row, or any column combination can also be implemented as an independent embodiment.

[0129] The correspondence shown in each table in the disclosure can be configured or predefined. The values of the information in each table are only examples, and other values can be configured, and the disclosure is not limited. When configuring the correspondence between the information and each parameter, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondence shown in some rows in the table in the disclosure can not be configured. For another example, the above table can be appropriately deformed, adjusted, etc., such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names understandable by the communication device, and the values or representations of the parameters can also use other values or representations understandable by the communication device. The above tables can also use other data structures when implemented, such as arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, etc.

[0130] The predefinition in the disclosure can be understood as defining, predefining, storing, pre-storing, pre-negotiating, pre-configuring, solidifying, or pre-burning.

[0131] The communication method and the communication system provided by the disclosure will be described in detail below with reference to the accompanying drawings.

[0132] FIG. 3 shows a structure diagram of a communication system according to an embodiment of the disclosure. As shown in FIG. 3, the system architecture can include a network device 11 and a terminal 12.

[0133] In some embodiments, the network device 11 can be an entity for transmitting or receiving a signal. For example, it can include a core network element, a passive Internet of Things server, a communication satellite, an evolved NodeB (eNB), a transmission reception point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system, a terminal, a passive Internet of Things device, and the like. Embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the network device 11. The network device 11 provided by the embodiments of the present disclosure can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layer of the network device, for example, the base station, and place part of the protocol layer functions in the CU for centralized control, and the rest or all of the protocol layer functions are distributed in the DU and controlled by the CU.

[0134] In some embodiments, the terminal 12 can be referred to as a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), an NB-IoT terminal, and the like. The terminal 12 can also be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality device, an augmented reality device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, and the like. Embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal 12.

[0135] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed by the embodiments of the present disclosure. Those skilled in the art can know that, with the evolution of system architecture and the appearance of new business scenarios, the technical solutions proposed by the embodiments of the present disclosure are also applicable to similar technical problems.

[0136] The following embodiments of the present disclosure can be applied to the communication system shown in FIG. 3, or part of the subject, but are not limited thereto. The subjects shown in FIG. 3 are illustrative, and the communication system can include all or part of the subjects in FIG. 3, or other subjects other than FIG. 3. The number and form of each subject is arbitrary, the connection relationship between each subject is illustrative, each subject can be connected or not connected, and the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0137] Embodiments of the present disclosure can be applied to satellite communication, Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G NR, 6th generation mobile communication system (6G), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IOT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based thereon, and the like. Further, a plurality of systems can be applied in combination (for example, combination of LTE or LTE-A and 5G, and the like).

[0138] On the SBFD and non-SBFD time units, PRACH transmission can adopt differentiated power configuration parameters to reduce terminal-to-terminal cross-link interference (UE-UE CLI) interference on other terminals or overcome the influence of gNB-gNB CLI on PRACH transmission performance, but how to differentiate the power parameters of PRACH on SBFD and non-SBFD time units has not been determined.

[0139] To solve the above problems, the terminal of the embodiment can determine the first information, and determine the power parameter of PRACH on the SBFD time unit according to the first information, so as to differentiate the power parameter of PRACH on the SBFD time unit from the power parameter of PRACH on the non-SBFD time unit. Through differentiated power parameter configuration, the terminal-to-terminal cross-link interference on other terminals can be reduced, or the influence of gNB-gNB CLI on PRACH transmission performance can be overcome.

[0140] Further, in order to illustrate the specific execution process of the above communication system, FIG. 4 shows a schematic diagram of a communication method according to an embodiment of the present disclosure. The method is applied to the above communication system, as shown in FIG. 4, and can include the following steps:

[0141] Step S201, the network device sends first information to the terminal.

[0142] In some embodiments, the terminal can receive the first information sent by the network device.

[0143] In some embodiments, the first information can be high-layer configured or dynamically indicated information.

[0144] In some embodiments, the first information is carried by at least one of the following:

[0145] RRC message, MAC CE, DCI, system information block (SIB), master information block (MIB), etc.

[0146] In some embodiments, the first information can include configuration information of the power parameter of PRACH on the SBFD time unit. Through the configuration information, the power parameter of PRACH on the SBFD time unit can be determined.

[0147] In some embodiments, the time unit can be a frame, a subframe, a slot, a symbol, etc.

[0148] In some embodiments, the configuration information of the power parameter of PRACH on SBFD time unit can comprise at least one of the following A1 to E1:

[0149] A1, first difference information, the first difference information is used to determine the power parameter difference of the first signal on the SBFD time unit and the non-SBFD time unit. For example, taking the SBFD time unit as the SBFD symbol, the offset between the power parameter of the first signal on the SBFD symbol and the power parameter of the first signal on the non-SBFD symbol, that is, the first difference information can include the difference of the power parameters of other UL signals on the SBFD and non-SBFD symbols. In some examples, the first signal is an uplink signal different from PRACH, such as a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a sounding reference signal (SRS), and the like.

[0150] B1, second difference information, the second difference information is used to determine the power parameter difference of PRACH on the SBFD time unit and the non-SBFD time unit. For example, taking the SBFD time unit as the SBFD symbol, the offset between the power parameter of PRACH on the SBFD symbol and the power parameter of PRACH on the non-SBFD symbol, that is, the second difference information can include the difference of the power parameters of PRACH signals on the SBFD and non-SBFD symbols.

[0151] C1, conversion parameter between the first difference information (A1) and the second difference information (B1). For example, the conversion parameter can determine the conversion relationship between the first difference information and the second difference information. In some embodiments, the conversion parameter can be a parameter value obtained by the first information, so that the second difference information can be derived from the first difference information, and the first difference information can also be derived from the second difference information. The conversion parameter can not be static and unchangeable, but can be dynamically adjusted according to system state, environmental change or time sequence data, so as to maintain the accuracy and effectiveness of the conversion.

[0152] D1, the power parameter of PRACH on the non-SBFD time unit.

[0153] E1, the power parameter of PRACH on the SBFD time unit.

[0154] In some embodiments, the power parameter difference of A1 and B1 can comprise at least one of the following A2 to C2:

[0155] A2, the difference of the maximum transmit power;

[0156] B2, the difference of the target receive power;

[0157] C2, difference of power ramping step.

[0158] In some embodiments, in PRACH related power control mechanism, the maximum transmit power, target received power, power ramping step are all key power parameters that have direct impact on the success rate of random access procedure and network efficiency.

[0159] Wherein, the maximum transmit power (Pcmax) refers to the maximum power level that the terminal can reach when transmitting signals, the target received power (preambleReceivedTargetPower) is the signal strength that the network hopes to receive at the base station end, and the power ramping step (powerRampingStep) defines the magnitude of power increase for each attempt when failing to obtain network response immediately.

[0160] In some embodiments, the difference of power parameters can be represented by the difference of power parameters of the first signal and / or PRACH in SBFD time units and non-SBFD time units.

[0161] In some embodiments, the difference of power parameters of PRACH is or is not in the random access channel (RACH) resource configuration. The RACH resource configuration is used to manage the random access procedure to ensure that the terminal can correctly start the access procedure, whether in the initial attachment, handover procedure, or when the terminal needs to reacquire network services. Through reasonable resource configuration, the network can avoid channel congestion caused by too many terminals trying to access at the same time. According to actual needs, the difference of power parameters of PRACH can or can not be in the RACH resource configuration.

[0162] In some embodiments, according to actual needs, the power parameters of PRACH in SBFD time units can or can not be in the RACH resource configuration.

[0163] In some embodiments, the network device can manage the PRACH power of the terminal through direct indication or indirect guidance to adapt to different network environments and random access needs.

[0164] In some embodiments, the network device can make the UE use the difference of power parameters and / or power parameters of PRACH when performing random access as part of the RACH resource configuration through protocol default / network configuration / dynamic indication, etc. Including special power setting guidance for SBFD time units to optimize the success rate of random access and network efficiency.

[0165] In some embodiments, the network device can also configure the allocation of the time-frequency resource of main concern, the selection of preamble sequence, etc. through the RACH resource, without directly specifying the specific PRACH power parameter difference and / or power parameter. In this case, the terminal can self-adjust the power parameter difference and / or power parameter of the PRACH according to the open-loop power control principle (such as based on the preliminary estimation of path loss) or the power control command received before.

[0166] Step S202, the terminal determines the power parameter of the PRACH on the SBFD time unit according to the first information.

[0167] In some embodiments, the terminal can determine the power parameter of the PRACH on the SBFD time unit according to at least one of A1 to E1 above, such as based on the configuration information of the power parameter, which can be determined according to one or more of the first difference information, the second difference information, the conversion parameter between the first difference information and the second difference information, the power parameter of the PRACH on the non-SBFD time unit, and the power parameter of the PRACH on the SBFD time unit.

[0168] In some embodiments, the power parameter of the PRACH on the SBFD time unit includes at least one of A3 to C3 below:

[0169] A3, maximum transmit power;

[0170] B3, target received power;

[0171] C3, power ramping step.

[0172] In some embodiments, the maximum transmit power, the target received power, and the power ramping step of the PRACH on the SBFD time unit can be configured as Pcmax_SBFD, preambleReceivedTargetPower_SBFD, and powerRampingStep_SBFD, respectively. Among them, the PRACH can flexibly configure the power parameters, wherein at least one of the maximum transmit power, the target received power, and the power ramping step needs to be different from the configuration of the non-SBFD time unit. To reduce the cross-link interference to other terminals or overcome the impact of gNB-gNB CLI on the PRACH transmission performance through the differentiated power parameter configuration.

[0173] In some embodiments, other UL signals can be configured with different power parameters in SBFD and non-SBFD time units in order to overcome gNB-gNB CLI or reduce UE-UE CLI. In this case, the difference of PRACH power parameters in SBFD and non-SBFD time units can be calculated according to the difference of other UL signals in SBFD and non-SBFD time units. In this way, the signaling overhead of PRACH power difference configuration can be reduced.

[0174] In some embodiments, the power parameter of PRACH in SBFD time units can be determined by the first difference information, the conversion parameter and the power parameter of PRACH in non-SBFD time units.

[0175] In some embodiments, taking the maximum transmission power of PRACH in SBFD time units as an example, if the difference between the maximum transmission power of the first signal in SBFD time units and non-SBFD time units in the configuration information is offset#1, the maximum power difference between PRACH in SBFD time units and non-SBFD time units can be determined by Formula One.

[0176] offset#2=A*offset#1+a (Formula One)

[0177] Wherein, A and a are conversion parameters between offset#1 and offset#2 obtained by protocol default / network configuration / dynamic indication, etc.

[0178] Further, the maximum transmission power of PRACH in SBFD time units is:

[0179] Pcmax_SBFD=Pcmax_non-SBFD±offset#2 (Formula Two)

[0180] Wherein, Pcmax_SBFD and Pcmax_non-SBFD are the maximum transmission power of PRACH in SBFD and non-SBFD time units, respectively. In this embodiment, the maximum transmission power in non-SBFD time units can be specifically selected according to the protocol default / network configuration / dynamic indication, etc. The maximum transmission power difference offset#2 is added or reduced to obtain the maximum transmission power in SBFD time units.

[0181] In some embodiments, if the difference of the target received power of the first signal in the SBFD time unit and the non-SBFD time unit in the configuration information is offset#3, the target power difference of the PRACH in the SBFD time unit and the non-SBFD time unit can be determined by formula three as offset#4.

[0182] offset#4=B*offset#3+b (Formula three)

[0183] Wherein, B and b are conversion parameters between offset#3 and offset#4 obtained by protocol default / network configuration / dynamic indication and the like.

[0184] Further, the target received power of the PRACH in the SBFD time unit is:

[0185] preambleReceivedTargetPower_SBFD=preambleReceivedTargetPower_non-SBFD±offset#4 (Formula four)

[0186] Wherein, preambleReceivedTargetPower_SBFD and preambleReceivedTargetPower_non-SBFD are the target received power of the PRACH in the SBFD and non-SBFD time units, respectively, in the embodiment, the target received power in the non-SBFD time unit can be specifically selected according to the protocol default / network configuration / dynamic indication and the like, and the target power difference offset#4 is added or reduced to obtain the target received power in the SBFD time unit.

[0187] In some embodiments, if the difference of the power ramping step of the first signal in the SBFD time unit and the non-SBFD time unit in the configuration information is offset#5, the power ramping step difference of the PRACH in the SBFD time unit and the non-SBFD time unit can be determined by formula five as offset#6.

[0188] offset#6=C*offset#5+c (Formula five)

[0189] Wherein, C and c are conversion parameters between offset#5 and offset#6 obtained by protocol default / network configuration / dynamic indication and the like.

[0190] Further, the power ramping step of the PRACH in the SBFD time unit is:

[0191] powerRampingStep_SBFD = powerRampingStep_non-SBFD ± offset#6 (Formula Six)

[0192] Wherein, powerRampingStep_SBFD and powerRampingStep_non-SBFD are power ramping step of PRACH in SBFD and non-SBFD time unit respectively, in the embodiment, the power ramping step in non-SBFD time unit can be selected according to the protocol default / network configuration / dynamic indication, and the power ramping step difference offset#6 is added or reduced based on the power ramping step in non-SBFD time unit to obtain the power ramping step in SBFD time unit.

[0193] In some embodiments, at least one of the above power parameter differences offset#1, offset#3, offset#5 is not 0.

[0194] In some embodiments, when the difference of power parameters of PRACH in SBFD and non-SBFD spatial units is calculated according to the difference of power parameters of the first signal in SBFD and non-SBFD spatial units, at least one of Pcmax, preambleReceivedTargetPower, powerRampingStep can be calculated differently. In some embodiments, at least one of the maximum transmit power, the power ramping step, and the target received power is not present in the first signal, and the absent parameter is not used to determine the PRACH power parameter in SBFD symbol. In some embodiments, the power parameter of PRACH in SBFD time unit can be determined by the second difference information and the power parameter of PRACH in non-SBFD time unit.

[0195] In some embodiments, if the differences of the maximum transmit power, the target received power, and the power ramping step of SBFD time unit and non-SBFD time unit in the configuration information are offset#7, offset#8, and offset#9 respectively, the power parameter of PRACH in SBFD time unit can be determined by the following formula.

[0196] Pcmax_SBFD = Pcmax_non-SBFD ± offset#7 (Formula Seven)

[0197] preambleReceivedTargetPower_SBFD = preambleReceivedTargetPower_non-SBFD ± offset#8 (Formula Eight)

[0198] powerRampingStep_SBFD = powerRampingStep_non-SBFD ± offset#9 (Equation Nine)

[0199] In some embodiments, at least one of the above power parameter differences offset#7, offset#8, offset#9 is not 0. In this embodiment, the maximum transmit power difference offset#7 can be increased or decreased based on the maximum transmit power in the non-SBFD time unit, and the target receive power difference offset#8 can be increased or decreased based on the target receive power in the non-SBFD time unit, and / or the power ramping step difference offset#9 can be increased or decreased based on the power ramping step in the non-SBFD time unit, to obtain the maximum transmit power in the SBFD time unit, the target receive power in the SBFD time unit, and / or the power ramping step in the SBFD time unit, according to the protocol default / network configuration / dynamic indication, etc.

[0200] In some embodiments, the power parameters of PRACH in the SBFD time unit can be determined directly through the PRACH power parameter information in the SBFD time unit.

[0201] In some embodiments, the above method can be used to determine the power parameters of PRACH in 4-step RA and 2-step RA.

[0202] In some embodiments, the method of this embodiment is mainly applicable to terminals (SBFD aware UE) with cognitive or support capabilities for SBFD technology, and is also applicable to network equipment side.

[0203] In some embodiments, at least one of the power parameters of PRACH in the SBFD time unit and the non-SBFD time unit is different.

[0204] In some embodiments, PRACH transmission can use differentiated power configuration parameters in SBFD and non-SBFD time units to reduce UE-UE CLI interference to other terminals or overcome the impact of gNB-gNB CLI on PRACH transmission performance.

[0205] In some embodiments, the terminal receives second information sent by the network device; wherein the second information is used to indicate whether the second difference information is determined according to the first difference information.

[0206] In some embodiments, the network device sends second information to the terminal.

[0207] In some embodiments, when the non-differentiated configuration of the power parameter of the PRACH signal on the SBFD and non-SBFD time units is used, the second information can be used to indicate whether the differentiated configuration of the power parameter of the PRACH signal on the SBFD and non-SBFD time units is obtained according to the differentiated calculation of the power parameter of the first signal on the SBFD and non-SBFD time units.

[0208] In some embodiments, when the power parameter of multiple categories of signals in the first signal is differentiated, the specific category of the first signal used to determine the power parameter of the PRACH on the SBFD symbol is determined according to the protocol agreement / network configuration / dynamic indication.

[0209] In some embodiments, different categories of signals are designed to serve different communication purposes, so their power control strategies and parameters will also be different, resulting in different differentiated configurations of the power parameter. The signal category suitable for the differentiated configuration of the power parameter of the PRACH signal can be determined by the protocol agreement / network configuration / dynamic indication, etc.

[0210] In some embodiments, the first difference information and the second difference information are both included in the configuration information, and the second difference information is used to determine the power parameter of the PRACH on the SBFD time unit.

[0211] In some embodiments, considering that other UL signals have different structures from the PRACH signal, the differentiated values of the power of different signals can be different. The differentiated configuration of the power parameter of the PRACH signal on the SBFD and non-SBFD time units can be directly configured in the first information, and the above differentiated configuration of the power parameter is more suitable for the PRACH signal.

[0212] In some embodiments, if the first difference information and the second difference information are both configured in the first information, the second difference information more suitable for the PRACH signal can be preferentially selected to determine the power parameter of the PRACH on the SBFD time unit, and the PRACH is configured according to the obtained power parameter.

[0213] In some embodiments, considering that other UL signals have different structures from the PRACH signal, the differentiated values of the power of different signals can be different. The power parameter of the PRACH signal on the SBFD can also be directly configured in the first information to achieve the differentiated configuration of the power of the PRACH on the SBFD time unit and the non-SBFD time unit, and the above differentiated configuration of the power parameter is more suitable for the PRACH signal.

[0214] In some embodiments, if the power parameter of the PRACH on the SBFD time unit is configured in the first information, the power parameter of the PRACH on the SBFD time unit can be directly selected to configure the PRACH.

[0215] In some embodiments, the first parameter in the power parameters of the PRACH on the SBFD time unit and the non-SBFD time unit is configured to be the same, and the first parameter of the PRACH on the SBFD time unit is determined using the first parameter on the non-SBFD time unit.

[0216] In some embodiments, the first parameter can be a parameter other than the maximum transmission power, the target received power, and the power ramping step in the power parameters of the PRACH signal on the SBFD and non-SBFD time units. By uniformly configuring other parameters, the management complexity of PRACH power control can be simplified, the possibility of configuration errors can be reduced, and it can not be necessary to separately set power parameters for different types of subframes.

[0217] In some embodiments, after determining the power parameter of the PRACH on the SBFD time unit according to the first information, one or more of the maximum transmission power, the target received power, and the power ramping step of the PRACH on the SBFD time unit can be adjusted according to the received power parameter configuration, to achieve differentiated configuration of the power parameters of the PRACH on the SBFD time unit and the non-SBFD time unit, reduce interference to the PRACH during transmission, and improve the efficiency of random access.

[0218] The communication method related to the present embodiment can include at least one of steps S201-S202. For example, step S201 can be implemented as an independent embodiment, and step S202 can be implemented as an independent embodiment. In addition, part or all of the steps in steps S201-S202 can be combined to implement an independent embodiment, and the present embodiment does not limit this.

[0219] The terminal of the present embodiment can determine the first information and determine the power parameter of the PRACH on the SBFD time unit according to the first information, so that the power parameter of the PRACH on the SBFD time unit is different from the power parameter of the PRACH on the non-SBFD time unit. Through differentiated power parameter configuration, the cross-link interference between terminals of other terminals can be reduced, or the influence of cross-link interference between network devices on the PRACH transmission performance can be overcome.

[0220] In order to illustrate the specific execution process of the terminal, FIG. 5 shows a flowchart of a communication method according to an embodiment of the present disclosure. The terminal can perform the following steps.

[0221] In step S301, the terminal determines the first information.

[0222] In some embodiments, the terminal can determine the first information according to a protocol predefinition.

[0223] In some embodiments, the terminal can receive the first information sent by the network device, such as the first information configured by a higher layer or dynamically indicated.

[0224] In some embodiments, the first information is carried by at least one of the following:

[0225] RRC message; MAC CE; DCI, etc.

[0226] In some embodiments, the first information includes configuration information of the power parameter of PRACH on the SBFD time unit.

[0227] In some embodiments, the configuration information includes at least one of the following:

[0228] First difference information, the first difference information is used to determine the power parameter difference of the first signal on the SBFD time unit and the non-SBFD time unit, the first signal being an uplink signal different from PRACH;

[0229] Second difference information, the second difference information is used to determine the power parameter difference of PRACH on the SBFD time unit and the non-SBFD time unit;

[0230] Conversion parameter between the first difference information and the second difference information;

[0231] Power parameter of PRACH on the non-SBFD time unit;

[0232] Power parameter of PRACH on the SBFD time unit.

[0233] In some embodiments, the power parameter difference includes at least one of the following:

[0234] Difference of maximum transmit power; difference of target receive power; difference of power ramping step.

[0235] In some embodiments, the power parameter difference of PRACH is or is not in the RACH resource configuration.

[0236] In some embodiments, the power parameter of PRACH on the SBFD time unit is or is not in the RACH resource configuration.

[0237] In step S302, the terminal determines the power parameter of PRACH on the SBFD time unit according to the first information.

[0238] In some embodiments, the power parameter includes at least one of the following:

[0239] Maximum transmit power; target receive power; power ramping step.

[0240] In some embodiments, the PRACH has at least one different power parameter in the SBFD time unit and the non-SBFD time unit.

[0241] In some embodiments, the terminal receives second information sent by the network device; wherein the second information is used to indicate whether the second difference information is determined according to the first difference information.

[0242] In some embodiments, when the power parameters of multiple types of signals in the first signal are differentiated, the specific type of the first signal used to determine the PRACH power parameter in the SBFD time unit is determined according to the protocol agreement / network configuration / dynamic indication.

[0243] In some embodiments, the configuration information includes both the first difference information and the second difference information, and the second difference information is used to determine the PRACH power parameter in the SBFD time unit.

[0244] In some embodiments, the PRACH has the same first parameter in the SBFD time unit and the non-SBFD time unit, and the first parameter of the PRACH in the SBFD time unit is determined using the first parameter in the non-SBFD time unit.

[0245] The specific examples in the embodiments are described with reference to the corresponding descriptions of the embodiments in FIGS. 3-5, which are not repeated here.

[0246] The communication method related to the embodiments can include at least one of steps S301-S302. For example, step S301 can be implemented as an independent embodiment, and step S302 can be implemented as an independent embodiment. In addition, part or all of the steps S301-S302 can be combined to implement an independent embodiment, which is not limited in the embodiments.

[0247] In the embodiments, the terminal determines the PRACH power parameter in the SBFD time unit according to the first information, so that the PRACH power parameter in the SBFD time unit is different from the PRACH power parameter in the non-SBFD time unit, which can reduce the cross-link interference between terminals or overcome the influence of cross-link interference between network devices on PRACH transmission.

[0248] FIG. 6 shows a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 6, the method is performed by a network device and can include the following steps.

[0249] Step S401, the network device sends first information to the terminal.

[0250] The first information is used to determine a power parameter of the PRACH on the SBFD time unit.

[0251] In some embodiments, the power parameter comprises at least one of:

[0252] maximum transmit power; target receive power; power ramping step.

[0253] In some embodiments, the power parameter of the PRACH on the SBFD time unit and the non-SBFD time unit is different.

[0254] In some embodiments, the first information comprises configuration information of the power parameter of the PRACH on the SBFD time unit.

[0255] In some embodiments, the configuration information comprises at least one of:

[0256] first difference information, the first difference information is used to determine a power parameter difference of a first signal on the SBFD time unit and the non-SBFD time unit, the first signal being an uplink signal different from the PRACH;

[0257] second difference information, the second difference information is used to determine a power parameter difference of the PRACH on the SBFD time unit and the non-SBFD time unit;

[0258] a conversion parameter between the first difference information and the second difference information;

[0259] the power parameter of the PRACH on the non-SBFD time unit;

[0260] the power parameter of the PRACH on the SBFD time unit.

[0261] In some embodiments, the power parameter difference comprises at least one of:

[0262] difference of maximum transmit power; difference of target receive power; difference of power ramping step.

[0263] In some embodiments, the power parameter difference of the PRACH is or is not in the RACH resource configuration.

[0264] In some embodiments, the power parameter of the PRACH on the SBFD time unit is or is not in the RACH resource configuration.

[0265] In some embodiments, the network device sends second information to the terminal; wherein the second information is used to indicate whether the second difference information is determined according to the first difference information.

[0266] In some embodiments, when the power parameters of the multiple categories of signals in the first signal are differentiated in the configuration, the specific category of the first signal used to determine the PRACH power parameter in the SBFD time unit is determined according to the protocol agreement / network configuration / dynamic indication.

[0267] In some embodiments, the first difference information and the second difference information are both included in the configuration information, and the second difference information is used to determine the PRACH power parameter in the SBFD time unit.

[0268] In some embodiments, the first parameter of the PRACH power parameter in the SBFD time unit and the non-SBFD time unit is configured to be the same, and the first parameter of the PRACH in the SBFD time unit is determined using the first parameter in the non-SBFD time unit.

[0269] In some embodiments, the first information is carried by at least one of the following:

[0270] RRC message; MAC CE; DCI.

[0271] The communication method provided by the embodiment can determine the PRACH power parameter in the SBFD time unit according to the first information, so that the PRACH power parameter in the SBFD time unit is different from the PRACH power parameter in the non-SBFD time unit, which can reduce the cross-link interference between terminals or overcome the influence of cross-link interference between network devices on PRACH transmission.

[0272] FIG. 7 is a schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 7, the embodiment of the present disclosure relates to a communication method, which includes:

[0273] In step S501, the terminal receives the first information sent by the network device.

[0274] In some embodiments, the first information includes configuration information of the PRACH power parameter in the SBFD time unit.

[0275] In some embodiments, the configuration information includes at least one of the following:

[0276] The first difference information is used to determine the difference between the power parameters of the first signal in the SBFD time unit and the non-SBFD time unit, and the first signal is an uplink signal different from the PRACH;

[0277] The second difference information is used to determine the difference between the power parameters of the PRACH in the SBFD time unit and the non-SBFD time unit;

[0278] a conversion parameter between the first difference information and the second difference information;

[0279] a power parameter of PRACH on non-SBFD time unit;

[0280] a power parameter of PRACH on SBFD time unit.

[0281] In some embodiments, the first difference information comprises a difference of power parameters of other UL signals on SBFD and non-SBFD symbols, and the second difference information comprises a difference of power parameters of PRACH signals on SBFD and non-SBFD symbols.

[0282] In some embodiments, the difference of power parameters comprises at least one of:

[0283] a difference of maximum transmit power; a difference of target receive power; a difference of power ramping step.

[0284] In some embodiments, the difference of power parameters of PRACH is in or not in the RACH resource configuration.

[0285] In some embodiments, the power parameter of PRACH on SBFD time unit is in or not in the RACH resource configuration.

[0286] In some embodiments, the first information is carried by at least one of:

[0287] an RRC message; a MAC CE; a DCI.

[0288] In step S502, the terminal determines a power parameter of PRACH on SBFD time unit.

[0289] In some embodiments, the SBFD aware UE determines the power parameter of PRACH signals on SBFD symbols according to the first information.

[0290] In some embodiments, the power parameter comprises at least one of:

[0291] maximum transmit power; target receive power; power ramping step.

[0292] In some embodiments, the power parameter comprises at least one of Pcmax, preambleReceivedTargetPower, powerRampingStep.

[0293] In some embodiments, at least one of the power parameters of PRACH on SBFD time unit and non-SBFD time unit is different.

[0294] In some embodiments, the terminal receives second information sent by the network device; wherein the second information is used to indicate whether the second difference information is determined according to the first difference information.

[0295] In some embodiments, the network device sends second information to the terminal.

[0296] In some embodiments, when the power parameters of multiple types of signals in the first signal are differentially configured, the specific type of the first signal used to determine the PRACH power parameter on the SBFD time unit is determined according to the protocol agreement / network configuration / dynamic indication.

[0297] In some embodiments, the first difference information and the second difference information are both in the configuration information, and the second difference information is used to determine the PRACH power parameter on the SBFD time unit.

[0298] In some embodiments, the first parameter of the PRACH power parameter on the SBFD time unit and the non-SBFD time unit is configured to be the same, and the first parameter of the PRACH on the SBFD time unit is determined using the first parameter on the non-SBFD time unit.

[0299] In some embodiments, the power difference of the other UL signal on the SBFD symbol and the non-SBFD symbol can be determined according to the protocol default / high-layer configuration / dynamic indication, and the PRACH power parameter on the non-SBFD symbol, and the PRACH power parameter on the SBFD symbol is determined.

[0300] In some embodiments, the other UL signal is differentially configured with the SBFD and non-SBFD symbol power parameters in order to overcome gNB-gNB CLI or reduce UE-UE CLI. At this time, the PRACH signal power parameter difference on the SBFD and non-SBFD symbols can be calculated according to the other UL signal power parameter difference on the SBFD and non-SBFD symbols.

[0301] In some embodiments, the above method can reduce the signaling overhead of PRACH signal power differential configuration.

[0302] In some embodiments, when the PRACH signal power parameter on the SBFD and non-SBFD symbols is not differentially configured, a parameter can be added to indicate whether the PRACH signal power parameter difference on the SBFD and non-SBFD symbols is obtained according to the UL signal power parameter difference on the SBFD and non-SBFD symbols.

[0303] In some embodiments, the Pcmax, preambleReceivedTargetPower, powerRampingStep can be calculated differently for PRACH signals in SBFD and non-SBFD symbols, according to the difference of power parameters of other UL signals in SBFD and non-SBFD symbols.

[0304] In some embodiments, the power parameters of PRACH in SBFD symbols can also be determined according to the difference of power parameters of PRACH in SBFD symbols and non-SBFD symbols, which are indicated by protocol default / high layer configuration / dynamic indication.

[0305] In some embodiments, considering that the structures of other UL signals and PRACH signals are different, the power difference values of different signals can be different. The power parameters of PRACH signals in SBFD and non-SBFD symbols can be directly configured, which are more suitable for PRACH signals.

[0306] In some embodiments, the power parameters of PRACH in SBFD symbols can also be determined according to the power parameters of PRACH in SBFD symbols, which are indicated by protocol default / high layer configuration / dynamic indication.

[0307] In some embodiments, considering that the structures of other UL signals and PRACH signals are different, the power difference values of different signals can be different. The power parameters of PRACH signals in SBFD can be directly configured, which enable the difference of power of PRACH in SBFD symbols and non-SBFD symbols, and the power parameters are more suitable for PRACH signals.

[0308] In some embodiments, the SBFD aware UE terminal can determine the power parameters in SBFD symbols, including at least one of Pcmax, preambleReceivedTargetPower, powerRampingStep, by the following methods.

[0309] Scheme 1, according to the difference of power of other UL signals in SBFD symbols and non-SBFD symbols, and the power parameters of PRACH in non-SBFD symbols, determine the power parameters of PRACH in SBFD symbols.

[0310] In some embodiments, the maximum power difference of other UL signals in SBFD symbols and non-SBFD symbols is offset#1, and the maximum power difference of PRACH in SBFD symbols and non-SBFD symbols is offset#2.

[0311] offset#2 = A * offset#1, A is a value indicated by protocol default / high layer configuration / dynamic indication.

[0312] Pcmax_SBFD = Pcmax_non-SBFD + offset#2

[0313] In some embodiments, the target power difference of other UL signals between SBFD symbol and non-SBFD symbol is offset#3, and the target power difference of PRACH between SBFD symbol and non-SBFD symbol is offset#4.

[0314] offset#4 = B * offset#3, B is a value indicated by protocol default / high layer configuration / dynamic indication.

[0315] preambleReceivedTargetPower_SBFD = preambleReceivedTargetPower_non-SBFD + offset#4

[0316] In some embodiments, the power ramping step difference of other UL signals between SBFD symbol and non-SBFD symbol is offset#5, and the target power difference of PRACH between SBFD symbol and non-SBFD symbol is offset#6.

[0317] offset#6 = C * offset#5, C is a value indicated by protocol default / high layer configuration / dynamic indication.

[0318] powerRampingStep_SBFD = powerRampingStep_non-SBFD + offset#6

[0319] Wherein at least one of offset#1, offset#3, offset#5 is not 0.

[0320] Scheme 2, according to the differentiation of PRACH power between SBFD symbol and non-SBFD symbol indicated by protocol default / high layer configuration / dynamic indication, determine the power parameters of PRACH on SBFD symbol.

[0321] In some embodiments, the Pcmax, preambleReceivedTargetPower, powerRampingStep difference between SBFD symbol and non-SBFD symbol is offset#7, offset#8, offset#9 respectively.

[0322] Pcmax_SBFD = Pcmax_non-SBFD + offset#7

[0323] preambleReceivedTargetPower_SBFD = preambleReceivedTargetPower_non-SBFD + offset#8

[0324] powerRampingStep_SBFD = powerRampingStep_non-SBFD + offset#9

[0325] where at least one of offset#7, offset#8, offset#9 is not 0.

[0326] Scheme 3, power parameters of PRACH in SBFD symbols are determined according to the power parameters of PRACH in non-SBFD symbols indicated by protocol default / high layer configuration / dynamics.

[0327] In some embodiments, the maximum power, the target received power, the power ramping step of SBFD symbols are configured as Pcmax_SBFD, preambleReceivedTargetPower_SBFD, powerRampingStep_SBFD respectively. At least one of the maximum power, the target received power, the power ramping step of SBFD symbols is different from that of non-SBFD symbols.

[0328] In schemes 1 to 3, Pcmax_SBFD and Pcmax_non-SBFD are the maximum power of PRACH in SBFD and non-SBFD symbols respectively; preambleReceivedTargetPower_SBFD and preambleReceivedTargetPower_non-SBFD are the target received power of PRACH in SBFD and non-SBFD symbols respectively; powerRampingStep_SBFD and powerRampingStep_non-SBFD are the power ramping step of PRACH in SBFD and non-SBFD symbols respectively.

[0329] Schemes 1 to 3 are applicable to the power parameters of PRACH in 4-step RA and 2-step RA.

[0330] In scheme 2, the differentiation of the power of PRACH in SBFD symbols and non-SBFD symbols can or can not be in the RACH resource configuration.

[0331] In scheme 3, the power parameter of PRACH in SBFD symbol can or can not be in the RACH resource configuration.

[0332] In some embodiments, the base station side can determine the power parameter on the SBFD symbol by the following method, the power parameter including at least one of Pcmax, preambleReceivedTargetPower, powerRampingStep.

[0333] In scheme 1, the power differentiation of other UL signals according to the protocol default / high layer configuration / dynamic indication in SBFD symbol and non-SBFD symbol, and the power parameter of PRACH in non-SBFD symbol, determine the power parameter of PRACH in SBFD symbol. The specific method is as described in the terminal side scheme 1, which is not described here.

[0334] In scheme 2, the power differentiation of PRACH in SBFD symbol and non-SBFD symbol according to the protocol default / high layer configuration / dynamic indication, determine the power parameter of PRACH in SBFD symbol. The specific method is as described in the terminal side scheme 2, which is not described here.

[0335] In scheme 3, the power parameter of PRACH in SBFD symbol according to the protocol default / high layer configuration / dynamic indication, determine the power parameter of PRACH in SBFD symbol. The specific method is as described in the terminal side scheme 3, which is not described here.

[0336] The specific examples in the embodiments of the present embodiment are described with reference to the corresponding descriptions of the embodiments in FIGS. 3-6, which are not described here.

[0337] The communication method related to the present embodiment can include at least one of steps S501-S502. For example, step S501 can be implemented as an independent embodiment, and step S502 can be implemented as an independent embodiment. In addition, part or all of the steps S501-S502 can be combined to implement an independent embodiment, which is not limited in the present embodiment.

[0338] In the present embodiment, the power parameter of PRACH in the SBFD time unit is determined according to the first information, so that the power parameter of PRACH in the SBFD time unit is different from the power parameter of PRACH in the non-SBFD time unit, which can reduce the cross-link interference between terminals, or overcome the influence of cross-link interference between network devices on PRACH transmission.

[0339] The embodiments of the present disclosure further provide a device for implementing any of the above methods, for example, a device comprising units or modules for implementing the steps performed by the terminal in any of the above methods. For another example, another device is provided, comprising units or modules for implementing the steps performed by the network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0340] It should be understood that the division of each unit or module in the above device is only a logical function division, and all or part of the units or modules can be integrated into one physical entity or physically separated in actual implementation. In addition, the units or modules in the device can be implemented in the form of processor invoking software: for example, the device comprises a processor connected with a memory, the memory stores instructions, and the processor invokes the instructions stored in the memory to implement any of the above methods or to implement the functions of each unit or module of the device, wherein the processor is a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be implemented by the design of the hardware circuit, and the hardware circuit can be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are implemented by the design of the logical relationship between the elements in the circuit; for another example, in another implementation, the hardware circuit is a programmable logic device (PLD), and taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to implement the functions of part or all of the units or modules. All units or modules of the above device can be implemented in the form of processor invoking software, or all units or modules can be implemented in the form of hardware circuit, or part of the units or modules are implemented in the form of processor invoking software, and the remaining part is implemented in the form of hardware circuit.

[0341] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuits, and the logical relationship of the hardware circuits is fixed or can be reconfigured. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, the hardware circuit can also be designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), or the like.

[0342] FIG. 8 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 8, the terminal can include a processing module 61. In some embodiments, the processing module 61 is configured to determine first information, and determine a power parameter of PRACH on a SBFD time unit according to the first information. Optionally, the processing module 61 is configured to perform at least one of the communication steps (for example, steps S301-S302, but not limited thereto) performed by the network device in any of the above methods, and details are not described herein.

[0343] FIG. 9 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 9, the network device can include a transceiver module 71. In some embodiments, the transceiver module 71 is configured to send first information to the terminal, wherein the first information is used to determine a power parameter of PRACH on a SBFD time unit. Optionally, the processing module 71 is configured to perform at least one of the communication steps (for example, step S401, but not limited thereto) performed by the terminal in any of the above methods, and details are not described herein.

[0344] In some embodiments, the processing module described above can be one module, or can include multiple sub-modules. Optionally, the multiple sub-modules described above can respectively perform all or part of the steps required to be performed by the processing module. Optionally, the processing module can be mutually replaced with the processor.

[0345] In some embodiments, the transceiving module described above can include a sending module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiving module can be mutually replaced with the transceiver.

[0346] FIG. 10 is a structural schematic diagram of a communication device 8100 according to the embodiments of the present disclosure. The communication device 8100 can be a network device (such as an access network device, a core network device, etc.), a terminal (such as a user equipment, etc.), a chip, a chip system, or a processor supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 8100 can be used to implement the methods described in the above method embodiments, and details can be referred to the descriptions in the above method embodiments.

[0347] As shown in FIG. 10, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a special-purpose processor, etc., such as a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process data of the programs. Optionally, the communication device 8100 is configured to perform any of the above methods. Optionally, the one or more processors 8101 are configured to invoke instructions to cause the communication device 8100 to perform any of the above methods.

[0348] In some embodiments, the communication device 8100 further includes one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceiver 8102 performs at least one of the communication steps (such as step S201, but not limited to this) in the above method, and the processor 8101 performs at least one of the other steps (such as steps S202, S203, but not limited to this). In an optional embodiment, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Optionally, the terms of transceiver, transceiving unit, transceiver, transceiving circuit, interface circuit, interface, etc. can be mutually replaced, and the terms of transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be mutually replaced, and the terms of receiver, receiving unit, receiver, receiving circuit, etc. can be mutually replaced.

[0349] In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Alternatively, all or part of the memories 8103 can be external to the communication device 8100. In optional embodiments, the communication device 8100 can include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 can be used to receive data from the memory 8102 or other devices, and can be used to send data to the memory 8102 or other devices. For example, the interface circuit 8104 can read data stored in the memory 8102 and send the data to the processor 8101.

[0350] The communication device 8100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 can not be limited by Figure 10. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally include a storage component for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) other devices, etc.

[0351] Figure 11 is a structural schematic diagram of a chip 8200 according to an embodiment of the present disclosure. For the case where the communication device 8100 is a chip or a chip system, the structural schematic diagram of the chip 8200 shown in Figure 11 can be referred to, but is not limited thereto.

[0352] The chip 8200 includes one or more processors 8201. The chip 8200 is configured to execute any of the above methods.

[0353] In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the terms interface circuit, interface, transceiver pin, etc. can be replaced by each other. In some embodiments, the chip 8200 further includes one or more memories 8203 for storing data. Optionally, all or part of the memories 8203 can be external to the chip 8200. Optionally, the interface circuit 8202 is connected to the memory 8203, and the interface circuit 8202 can be used to receive data from the memory 8203 or other devices, and the interface circuit 8202 can be used to send data to the memory 8203 or other devices. For example, the interface circuit 8202 can read data stored in the memory 8203 and send the data to the processor 8201.

[0354] In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as transmitting and / or receiving in the above-described methods. The interface circuit 8202 performing the communication steps such as transmitting and / or receiving in the above-described methods refers to, for example, the interface circuit 8202 performing data interaction between the processor 8201, the chip 8200, the memory 8203, or a transceiver device. In some embodiments, the processor 8201 performs at least one of the other steps.

[0355] The modules and / or devices described in each of the embodiments of the virtual device, the physical device, the chip, etc. can be combined or separated according to actual conditions. Optionally, part or all of the steps can also be performed by a plurality of modules and / or devices in cooperation, which is not limited here.

[0356] The disclosure further proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a transitory storage medium.

[0357] The disclosure further proposes a program product, which, when executed by the communication device 8100, causes the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0358] The disclosure further proposes a computer program, which, when executed on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method characterized by comprising: The method is performed by a terminal, and the method comprises: determining first information; determining, according to the first information, a power parameter of a physical random access channel (PRACH) on a sub-band full duplex (SBFD) time unit.

2. The method of claim 1, wherein, The power parameter comprises at least one of: a maximum transmit power; a target receive power; a power ramping step.

3. The method of any one of claims 1-2, wherein, At least one of the power parameters of the PRACH on the SBFD time unit and a non-SBFD time unit is different.

4. The method according to any one of claims 1 to 3, characterized in that, The first information comprises configuration information of the power parameter of the PRACH on the SBFD time unit.

5. The method of claim 4, wherein, The configuration information comprises at least one of: first difference information for determining a difference in the power parameter of a first signal on the SBFD time unit and the non-SBFD time unit, the first signal being an uplink signal different from the PRACH; second difference information for determining a difference in the power parameter of the PRACH on the SBFD time unit and the non-SBFD time unit; a conversion parameter between the first difference information and the second difference information; the power parameter of the PRACH on the non-SBFD time unit; the power parameter of the PRACH on the SBFD time unit.

6. The method of claim 5, wherein, The difference in the power parameter of the PRACH comprises at least one of: a difference in the maximum transmit power; a difference in the target receive power; a difference in the power ramping step.

7. The method of any one of claims 5-6, wherein, The difference in the power parameter of the PRACH is or is not in a random access channel (RACH) resource configuration.

8. The method according to any one of claims 5 to 7, characterized in that, The power parameter of the PRACH on the SBFD time unit is or is not in the RACH resource configuration.

9. The method according to any one of claims 5 to 8, characterized in that, The method further comprises: receiving second information sent by a network device; wherein the second information is used to indicate whether the second difference information is determined according to the first difference information.

10. The method according to any one of claims 5 to 8, characterized in that, The method further comprises: the configuration information comprises both the first difference information and the second difference information, and the power parameter of the PRACH on the SBFD time unit is determined using the second difference information.

11. The method according to any one of claims 5 to 8, characterized in that, The method further comprises: a first parameter of the power parameters of the PRACH on the SBFD time unit and the non-SBFD time unit is configured to be the same, and the first parameter of the PRACH on the SBFD time unit is determined using the first parameter on the non-SBFD time unit.

12. The method according to any one of claims 1 to 11, characterized in that, The determination of the first information comprises: receiving the first information sent by a network device.

13. The method of claim 12, wherein, The first information is carried by at least one of: a radio resource control (RRC) message; a medium access control (MAC) control element (CE); downlink control information (DCI).

14. A communication method, comprising: The method is performed by a network device, and the method comprises: sending first information to a terminal; wherein the first information is used to determine a power parameter of a physical random access channel (PRACH) on a sub-band full duplex (SBFD) time unit.

15. The method of claim 12, wherein, The power parameter comprises at least one of: a maximum transmit power; a target receive power; a power ramping step.

16. The method of any one of claims 14-15, wherein, At least one of the power parameters of the PRACH on the SBFD time unit and a non-SBFD time unit is different.

17. The method according to any one of claims 14 to 16, characterized in that, The first information comprises configuration information of the power parameter of the PRACH on the SBFD time unit.

18. The method of claim 17, wherein, The configuration information comprises at least one of: The first difference information is used to determine a power parameter difference of a first signal on the SBFD time unit and the non-SBFD time unit, the first signal being an uplink signal different from the PRACH; The second difference information is used to determine a power parameter difference of the PRACH on the SBFD time unit and the non-SBFD time unit; A conversion parameter between the first difference information and the second difference information; A power parameter of the PRACH on the non-SBFD time unit; A power parameter of the PRACH on the SBFD time unit.

19. The method of claim 18, wherein, The power parameter difference includes at least one of: A difference of a maximum transmit power; A difference of a target receive power; A difference of a power ramping step.

20. The method of any one of claims 18-19, wherein, The power parameter difference of the PRACH is or is not in a random access channel (RACH) resource configuration.

21. The method of any one of claims 18-20, wherein, The power parameter of the PRACH on the SBFD time unit is or is not in the RACH resource configuration.

22. The method of any one of claims 18-21, wherein, The method further includes: sending second information to the terminal; wherein the second information is used to indicate whether the second difference information is determined according to the first difference information.

23. The method of any one of claims 18-21, wherein, The first difference information and the second difference information are both in the configuration information, and the second difference information is used to determine the power parameter of the PRACH on the SBFD time unit.

24. The method of any one of claims 18-21, wherein, A first parameter of the power parameter of the PRACH on the SBFD time unit and the non-SBFD time unit is configured to be the same, and the first parameter of the PRACH on the SBFD time unit uses the first parameter on the non-SBFD time unit.

25. The method of any one of claims 14 to 24, wherein, The first information is carried by at least one of: a radio resource control (RRC) message; a medium access control (MAC) control element (CE); downlink control information (DCI).

26. A method of communication, comprising: The method includes: a network device sending first information to a terminal; the terminal receiving the first information sent by the network device and determining a power parameter of a physical random access channel (PRACH) on a sub-band full duplex (SBFD) time unit according to the first information.

27. A terminal, characterized by The method includes: a processing module configured to determine first information; a power parameter of a physical random access channel (PRACH) on a sub-band full duplex (SBFD) time unit is determined according to the first information.

28. A network device, comprising: The method includes: a transceiver module configured to send first information to a terminal; wherein the first information is used to determine a power parameter of a physical random access channel (PRACH) on a sub-band full duplex (SBFD) time unit.

29. A terminal, characterized by The method includes: one or more processors; wherein the processor is used to execute the method of any one of claims 1 to 13.

30. A network device, comprising: The method includes: one or more processors; wherein the processor is used to execute the method of any one of claims 14 to 25.

31. A communication system, characterized by The method includes a terminal and a network device, wherein the terminal is configured to implement the method of any one of claims 1 to 13, and the network device is configured to implement the method of any one of claims 14 to 25.

32. A computer storage medium, wherein, The computer storage medium stores computer executable instructions; the computer executable instructions are executed by the processor to implement the method of any one of claims 1 to 25.

33. A computer program product, comprising a computer program, which, when executed by a processor, is capable of implementing the method of any one of claims 1 to 25.

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