CN112425213B

CN112425213B - Method, communication device, chip and medium for determining preamble sequence transmitting power

Info

Publication number: CN112425213B
Application number: CN201880094808.7A
Authority: CN
Inventors: 唐海
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-10-22
Filing date: 2018-10-22
Publication date: 2023-06-20
Anticipated expiration: 2038-10-22
Also published as: CN112425213A; WO2020082215A1

Abstract

The embodiment of the application discloses a method, communication equipment, a chip and a medium for determining the transmitting power of a preamble sequence, wherein the method comprises the following steps: determining a power offset value corresponding to the target preamble sequence format; and determining the transmitting power of a target preamble sequence according to the power offset value, wherein the target preamble sequence corresponds to the target preamble sequence format. The method, the communication equipment, the chip and the medium are beneficial to realizing that the transmission power of the corresponding preamble sequences under a plurality of preamble sequence formats is the same.

Description

Method, communication device, chip and medium for determining preamble sequence transmitting power

Technical Field

The embodiment of the application relates to the field of communication, in particular to a method for determining the transmitting power of a preamble sequence, communication equipment, a chip and a medium.

Background

In a New Radio-based access to unlicensed spectrum, NR-U system on unlicensed spectrum, a preamble sequence in a physical random access channel (Physical Random Access Channel, PRACH) may support transmission in multiple formats, and frequency resources occupied by the multiple formats on the frequency domain may be different, so that the design of a power offset value in the preamble sequence transmit power formula needs to be reconsidered.

Disclosure of Invention

The embodiment of the application provides a method, communication equipment, a chip and a medium for determining the transmitting power of a preamble sequence, which are beneficial to determining the transmitting power of the corresponding preamble sequence under various preamble sequence formats.

In a first aspect, a method for determining preamble sequence transmit power is provided, the method comprising: determining a power offset value corresponding to the target preamble sequence format; and determining the transmitting power of a target preamble sequence according to the power offset value, wherein the target preamble sequence corresponds to the target preamble sequence format.

In a second aspect, a communication device is provided for performing the method of the first aspect or implementations thereof.

In particular, the communication device comprises functional modules for performing the method of the first aspect or implementations thereof described above.

In a third aspect, a communication device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method in the first aspect or various implementation manners thereof.

In a fourth aspect, a chip is provided for implementing the method in the first aspect or each implementation manner thereof.

Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method as in the first aspect or implementations thereof described above.

In a fifth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the method of the first aspect or implementations thereof.

In a sixth aspect, a computer program product is provided, comprising computer program instructions for causing a computer to perform the method of the first aspect or implementations thereof.

In a seventh aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of the first aspect or implementations thereof described above.

By the technical scheme, the transmitting power of the preamble sequence in the preamble sequence format is determined by determining the power offset value corresponding to the preamble sequence format, so that the transmitting power of the corresponding preamble sequence in a plurality of preamble sequence formats is identical.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.

Fig. 2 is a schematic block diagram of a method for determining preamble sequence transmit power provided in an embodiment of the present application.

Fig. 3 is a diagram showing the PRACH resource structure in the frequency domain under different conditions.

Fig. 4 is a schematic diagram of determining a power offset value corresponding to a preamble sequence format in case 1 in fig. 3 according to an embodiment of the present application.

Fig. 5 is a schematic diagram of determining a power offset value corresponding to a preamble sequence format in case 2 in fig. 3 according to an embodiment of the present application.

Fig. 6 is another schematic diagram of determining a power offset value corresponding to a preamble sequence format according to an embodiment of the present application.

Fig. 7 is a further schematic diagram of determining a power offset value corresponding to a preamble sequence format according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of a communication device provided in an embodiment of the present application.

Fig. 9 is another schematic block diagram of a communication device provided by an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a chip provided in an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio (NR) system, evolution system of NR system, LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), next generation communication system or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, and the like, to which the embodiments of the present application can also be applied.

The frequency spectrum of the application in the embodiments of the present application is not limited. For example, embodiments of the present application may be applied to licensed spectrum as well as unlicensed spectrum.

Exemplary, a communication system 100 to which embodiments of the present application apply is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. In an embodiment, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal device" includes, but is not limited to, a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. An access terminal may be, but is not limited to, a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

In an embodiment, a direct terminal (D2D) communication may be performed between the terminal devices 120.

In an embodiment, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

Fig. 1 illustrates one network device and two terminal devices, and in an embodiment, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within a coverage area of each network device, which is not limited in this embodiment of the application.

In an embodiment, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be appreciated that in the embodiments of the present application, the transmit power of the preamble sequence is determined based on the power offset value.

In the embodiment of the present application, the transmission power of the preamble sequence may be determined by the following formula:

pre_received_target_power=pre receivedtargetpower+delta_pre+ (pre_power_ramp_counter-1) ×pre_power_ramp_step (formula 1).

Wherein the preampletereceivedtargetpower is a target received power of a preamble sequence configured by the network device, and the parameter can be determined by high-level configuration; a calculator of the number of POWER RAMPING of PREAMBLE transmission, the parameter being determined according to the number of PREAMBLE transmission; the preamble_power_ramp_step is a POWER ramp-up factor, and the parameter can be determined by a higher layer configuration; DELTA _ PREAMBLE is the power offset value, i.e. the parameter value referred to in the embodiments of the present application.

P_prach=min { p_cmax, previous_received_target_power+pl } [ dBm ] (equation 2).

Wherein, P_PRACH is the transmitting power of the target preamble sequence; p_cmax is the maximum transmit power configured for the terminal device; the preamble_received_target_power is the TARGET RECEIVED POWER of the PREAMBLE sequence calculated by the terminal equipment; PL is a path loss value measured by the terminal equipment according to the downlink reference signal.

In the embodiment of the present application, the power offset values corresponding to different preamble sequence formats may be different, so that it is necessary to determine the power offset values corresponding to different preamble sequence formats, thereby determining the transmission power of the preamble sequence corresponding to different preamble sequence formats.

Fig. 2 shows a schematic block diagram of a method 200 of determining preamble sequence transmit power in an embodiment of the present application. The method 200 may be performed by a communication device, such as a terminal device. As shown in fig. 2, the method 200 includes some or all of the following:

s210, determining a power offset value corresponding to a target preamble sequence format;

s220, determining the transmitting power of a target preamble sequence according to the power offset value, wherein the target preamble sequence corresponds to the target preamble sequence format.

That is, the terminal device may determine the transmit power of the preamble sequence in the preamble sequence format by determining a power offset value corresponding to the preamble sequence format, for example, the power offset value may be determined by mapping the target preamble sequence format with the preamble sequence format and the power offset value in table 1:

TABLE 1

Preamble sequence format	Power offset value
		Preamble sequence Format 1	Offset value 1
Preamble sequence Format 2	Offset value 2
		Preamble sequence Format 3	Offset value 3

The mapping relationship of table 1 may be configured by a higher layer, or may be agreed by a protocol.

In the unlicensed band, in order to meet an index that the signal occupies at least 80% of the channel bandwidth and maximize the transmission power of the uplink signal when the terminal device transmits the uplink data, the preamble sequence may occupy a larger bandwidth in the frequency domain than the preamble sequence in the licensed band, i.e., the transmission structure of the preamble sequence in the PRACH may include at least one of the PRACH resource structures in 4 cases as shown in fig. 3 in the frequency domain. One preamble sequence format may include one or more PRACH resource structures, among others.

An example is illustrated of a sub-carrier spacing (subcarrier spacing, SCS) of 15khz comprising 106 physical resource blocks (Physical Resource Block, PRB) within 20mhz, wherein each PRB comprises 12 sub-carriers.

In case 1, one PRACH resource structure occupies consecutive several PRBs, for example, consecutive 12 PRBs.

In case 2, one PRACH resource structure occupies several PRBs that are discretely distributed at equal intervals, for example, 11 PRBs that occupy a comb structure.

In case 3, one PRACH resource structure occupies several subcarriers in each of several PRBs distributed discretely at equal intervals, for example, 0,2,4,6,8,10 th subcarriers in each of 11 PRBs occupying a comb structure.

In case 4, one PRACH resource structure occupies several subcarriers, for example, 22 subcarriers, which are distributed at equal intervals within a 20MHz bandwidth, specifically, the first subcarrier in the 0,5,10,15,20,25 th, … th, 90,95,100,105 th PRB.

It should be appreciated that the maximum transmit power per bandwidth of the communication device is limited in the unlicensed band, i.e., the communication device needs to follow the index requirements of the maximum transmit power spectral density, and therefore, the power offset value of the preamble sequence format in the unlicensed band needs to be reasonably designed.

In an embodiment of the present application, the power offset value is determined according to a reference frequency domain unit included in the target preamble sequence format. In the embodiment of the present application, the power offset value is determined according to the number N of reference frequency domain units included in the target preamble sequence format. Wherein N may be an integer or a fraction.

The reference frequency domain unit may refer to any one of the following cases: reference to a frequency domain resource comprised by a preamble format, wherein the reference preamble format is one of the preamble formats, and in an embodiment, the reference preamble format may be considered as a preamble format with a corresponding power offset value of 0; the frequency domain resources included in the reference preamble sequence format included in the reference bandwidth or the frequency domain resources included in the target preamble sequence format included in the reference bandwidth; p PRBs; q MHz bandwidth, etc.

In an embodiment, the reference preamble sequence format may be a preamble sequence format with the smallest occupied frequency domain resource in the preamble sequence formats, or may be a preamble sequence format with the largest occupied frequency domain resource in the preamble sequence formats, or may also be a preamble sequence format with the specific occupied frequency domain resource in the preamble sequence formats, which is not limited in this application.

In the following, in connection with fig. 4, how the terminal device determines the power offset value based on the number N of reference frequency domain units comprised by the target preamble sequence format in each case in fig. 3 will be described in detail. In the above-described various cases, it can be considered that the method of determining the power offset values corresponding to the preamble sequence formats of case 3 and case 4 is similar to that of case 2, and therefore, the determination of the power offset values in both cases of case 1 and case 2 is mainly considered below.

If the PRACH format includes the PRACH resource structure in case 1, the reference frequency domain unit may include the frequency domain resource included in the reference preamble sequence format, or may also include the frequency domain resource required for transmitting a PRACH resource structure, or may also include the frequency domain resource included in the reference preamble sequence format included in the reference bandwidth, or may also include the frequency domain resource included in the target preamble sequence format included in the reference bandwidth, or may also include a fixed bandwidth, or the like.

In an embodiment, the reference frequency domain unit comprises frequency domain resources comprised by a reference preamble sequence format, wherein the reference preamble sequence format is one of preamble sequence formats. For example, the reference preamble sequence format includes a PRACH resource structures in the frequency domain, the target preamble sequence format includes B PRACH resource structures in the frequency domain, and then the target preamble sequence format includes (B/a) reference frequency domain units, i.e., the power offset value may be determined according to (B/a). Further, the power offset value may be determined according to a first parameter, which may be 10 x lg (B/a). For another example, the reference preamble sequence format includes a PRBs in the frequency domain, the target preamble sequence format includes B PRBs in the frequency domain, and then the target preamble sequence format includes (B/a) reference frequency domain units, and as such the power offset value may be determined according to (B/a). Further, the power offset value may be determined according to a first parameter, which may be 10 x lg (B/a). For another example, the reference preamble sequence format includes an a MHz bandwidth in the frequency domain and the target preamble sequence format includes a B MHz bandwidth in the frequency domain, and then the target preamble sequence format includes (B/a) reference frequency domain units, and as such the power offset value may be determined according to (B/a). Further, the power offset value may be determined according to a first parameter, which may be 10 x lg (B/a).

In an embodiment, the reference frequency domain unit comprises frequency domain resources required for transmitting one PRACH resource structure. For example, in fig. 4, the target preamble sequence format in the case of 15kHz includes 8 PRACH resource structures, and then the target preamble sequence format includes 8 reference frequency domain units, and it is assumed that the power offset value is also determined according to the first parameter, that is, the first parameter is 10×lg (8) =9. For another example, in fig. 4, the target preamble sequence format in the case of 30kHz includes 4 PRACH resource structures, and then the target preamble sequence format includes 4 reference frequency domain units, and it is assumed that the power offset value is also determined according to the first parameter, that is, the first parameter is 10×lg (4) =6. For another example, in fig. 4, the target preamble sequence format in the case of 60kHz includes 2 PRACH resource structures, and then the target preamble sequence format includes 2 reference frequency domain units, and it is assumed that the power offset value is also determined according to the first parameter, that is, the first parameter is 10×lg (2) =3.

In an embodiment, the reference frequency domain unit includes frequency domain resources required by a maximum number of PRACH resource structures included within the reference bandwidth. For example, the reference bandwidth is 20MHz, and within 20MHz, for the case of 15kHz, 30kHz and 60kHz, the corresponding reference frequency domain unit includes 8,4 and 2 PRACH resource structures, respectively. Assuming that the target preamble sequence format in the case of 15kHz in fig. 4 includes 8 PRACH resource structures, the target preamble sequence format in the case of 30kHz in fig. 4 includes 4 PRACH resource structures, and the target preamble sequence format in the case of 60kHz in fig. 4 includes 2 PRACH resource structures, then in the cases of 15kHz, 30kHz and 60kHz, the target preamble sequence format includes 1 reference frequency domain unit, and the power offset value is determined according to the first parameter, where the first parameter is 10×lg (8/8) =10×lg (4/4) =10×lg (2/2) =0. For another example, the reference bandwidth is 20MHz, and within 20MHz, for the case of 15kHz, 30kHz and 60kHz, the corresponding reference frequency domain unit includes 8,4 and 2 PRACH resource structures, respectively. Assuming that the target preamble sequence format in the three cases in fig. 4 includes only two PRACH resource structures, respectively, the target preamble sequence format includes a reference frequency domain unit of (2/8) at 15kHz, the first parameter is 10×lg (2/8) = -6, the target preamble sequence format includes a reference frequency domain unit of (2/4) at 30kHz, the first parameter is 10×lg (2/4) = -3, the target preamble sequence format includes a reference frequency domain unit of (2/2) at 60kHz, and the first parameter is 10×lg (2/2) = 0.

In an embodiment, the reference frequency domain unit comprises frequency domain resources comprised by the reference preamble sequence format comprised within a reference bandwidth. For example, the reference bandwidth is 10MHz, and the frequency domain resources included in the reference preamble sequence format are frequency domain resources required by the maximum number of PRACH resource structures included in the reference bandwidth. For example, within 10MHz, the reference preamble sequence format includes 4,2 and 1 PRACH resource structures for the 15kHz, 30kHz and 60kHz cases, respectively. The bandwidth of the actual transmission is 20MHz, for example, as shown in fig. 4, the target preamble sequence format in the case of 15kHz in fig. 4 includes 8 PRACH resource structures, the target preamble sequence format in the case of 30kHz in fig. 4 includes 4 PRACH resource structures, and the target preamble sequence format in the case of 60kHz in fig. 4 includes 2 PRACH resource structures. Then the target preamble sequence format comprises a reference frequency domain unit of (8/4) at 15kHz, the first parameter is 10 x lg (8/4) =3, the target preamble sequence format comprises a reference frequency domain unit of (4/2) at 30kHz, the first parameter is 10 x lg (4/2) =3, the target preamble sequence format comprises a reference frequency domain unit of (2/1) at 60kHz, and the first parameter is 10 x lg (2/1) =3.

In an embodiment, the reference frequency domain unit includes a Q MHz bandwidth. For example, assuming that the reference frequency domain unit Q is 2.16MHz (i.e., is the frequency domain resource occupied by one PRACH resource structure in the case of 15 kHz), if the target preamble sequence format in the three cases in fig. 4 includes only two PRACH resource structures, the bandwidth occupied by the target preamble sequence format in the case of 15kHz is 4.32MHz, i.e., the number N of reference frequency domain units included in the target preamble sequence format is 2, and the first parameter is 10×lg (2) =3; or, under the condition of 30kHz, the bandwidth occupied by the target preamble sequence format is 8.64MHz, that is, the number N of reference frequency domain units included in the target preamble sequence format is 4, and the first parameter is 10×lg (4) =6; or, in the case of 60kHz, the bandwidth occupied by the target preamble sequence format is 17.28MHz, that is, the number N of reference frequency domain units included in the target preamble sequence format is 8, and the first parameter is 10×lg (8) =9. For another example, assuming that the reference frequency domain unit Q is 4.32MHz (i.e., is the frequency domain resource occupied by one PRACH resource structure in the case of 30 kHz), if the target preamble sequence format in the three cases in fig. 4 includes only two PRACH resource structures, respectively, the bandwidth occupied by the target preamble sequence format in the case of 15kHz is 4.32MHz, i.e., the number N of reference frequency domain units included in the target preamble sequence format is 1, and the first parameter is 10×lg (1) =0; or, under the condition of 30kHz, the bandwidth occupied by the target preamble sequence format is 8.64MHz, that is, the number N of reference frequency domain units included in the target preamble sequence format is 2, and the first parameter is 10×lg (2) =3; or, in the case of 60kHz, the bandwidth occupied by the target preamble sequence format is 17.28MHz, that is, the number N of reference frequency domain units included in the target preamble sequence format is 4, and the first parameter is 10×lg (4) =6.

If the PRACH format is the structure in case 2, the reference frequency domain unit may include frequency domain resources included in the reference preamble sequence format, or may also include frequency domain resources required for transmitting one PRACH resource structure, or may also include P PRBs, or may also include Q MHz bandwidth, or the like. Examples of the reference frequency domain unit including the frequency domain resource included in the reference preamble sequence format or including the frequency domain resource required for transmitting a PRACH resource structure are described above, and are not repeated here for brevity.

Since the maximum transmit power of the terminal device per unit bandwidth is limited in the unlicensed band, i.e., the maximum transmit power of the terminal device per PRB is the same regardless of the subcarrier spacing of 15kHz, or 30kHz, or 60kHz, in one embodiment, the reference frequency domain unit includes P PRBs. For example, assuming that P is 1 PRB, and the target preamble sequence format in the case of 15kHz in fig. 5 includes 11 PRBs, the target preamble sequence format in the case of 30kHz in fig. 5 includes 13 PRBs, and the target preamble sequence format in the case of 60kHz in fig. 5 includes 12 PRBs, then the target preamble sequence format in the case of 15kHz includes 11 reference frequency domain units, and the first parameter is 10×lg (11) =10; in the case of 30kHz, the target preamble sequence format includes 13 PRBs, and the first parameter is 10×lg (13) =11; in the case of 60kHz, the target preamble sequence format includes 12 reference frequency domain units, and the first parameter is 10×lg (12) =11. For another example, assuming that P is 10 PRBs, and the target preamble sequence format in the case of 15kHz in fig. 5 includes 20 PRBs, the target preamble sequence format in the case of 30kHz in fig. 5 includes 10 PRBs, and the target preamble sequence format in the case of 60kHz in fig. 5 includes 5 PRBs, then the target preamble sequence format in the case of 15kHz includes (20/10) reference frequency domain units, and the first parameter is 10×lg (20/10) =3; in the case of 30kHz, the target preamble sequence format includes (10/10) PRBs, and the first parameter is 10×lg (1) =0; in the case of 60kHz, the target preamble sequence format includes (5/10) reference frequency domain units, and the first parameter is 10 x lg (5/10) = -3.

It should be understood that the above first parameter is only used for illustration, and the first parameter may also be other calculation formulas related to the number N of reference frequency domain units included in the target preamble sequence format, which is not limited in this embodiment of the present application.

In an embodiment, the first parameter may be directly used to determine delta_preamble in formula 1, for example, delta_preamble in formula 1 may be replaced by 10×lg (N), or the first parameter may be modified to determine delta_preamble in formula 1, for example, delta_preamble in formula 1 may be replaced by-10×lg (N).

Therefore, the method for determining the transmitting power of the preamble sequence provided by the embodiment of the present application may consider the power offset values corresponding to the preamble sequence formats with different frequency domain repetition times, or may obtain the corresponding power offset values according to the reference units included in the different preamble sequence formats, so as to obtain the transmitting power of the corresponding preamble sequence in the different preamble sequence formats.

In an embodiment of the present application, the power offset value is determined according to a reference time domain unit included in the target preamble sequence format. In this embodiment of the present application, the power offset value is determined according to the number M of reference time domain units included in the target preamble sequence format. Wherein M may be an integer or a fraction.

The reference time domain unit may refer to any of the following cases: reference to a time domain resource comprised by a preamble format, wherein the reference preamble format is one of the preamble formats, and in an embodiment, the reference preamble format may be considered as a preamble format with a corresponding power offset value of 0; the time domain resources included in the reference preamble sequence format included in the reference bandwidth or the time domain resources included in the target preamble sequence format included in the reference bandwidth; r ms; s symbols, etc.

In an embodiment, the reference preamble format may be a preamble format with the smallest occupied time domain resource in the preamble format, or may be a preamble format with the largest occupied time domain resource in the preamble format, or may also be a preamble format with the specific occupied time domain resource in the preamble format, which is not limited in this application.

In one embodiment, the power offset value may be determined according to a second parameter, which may be 10×lg (M). The manner in which this second parameter is calculated will be described below in connection with several specific embodiments.

In an embodiment, the reference time domain unit comprises time domain resources comprised by the reference preamble sequence format. For example, the reference preamble format comprises C symbols in the time domain and the target preamble format comprises D symbols in the time domain, then the target preamble format comprises (D/C) reference time domain units, the power offset value may be determined according to a second parameter, which may be 10 x lg (D/C). For another example, the reference preamble format may include time resources of C microseconds in the time domain and the target preamble format may include time resources of D microseconds in the time domain, and then the target preamble format may include (D/C) reference time domain units, and the power offset value may be determined according to a second parameter, which may be 10 x lg (D/C).

In an embodiment, the reference time domain unit includes time domain resources required by a maximum number of PRACH resource structures included in the reference time. For example, the reference time is 1ms, the reference time domain unit includes E preamble sequence symbols in the time domain and the target preamble sequence format includes F preamble sequence symbols in the time domain within 1ms, and then the target preamble sequence format includes (F/E) reference time domain units, and the power offset value may be determined according to a second parameter, which may be 10×lg (F/E). For example, assuming that the reference time domain unit includes 12 preamble sequence symbols in the case of 15kHz within 1ms, the target preamble sequence format corresponds to 15kHz, when the target preamble sequence format includes 6 preamble sequence symbols in the time domain, the second parameter is 10 x lg (6/12) = -3; alternatively, when the target preamble sequence format includes 4 preamble sequence symbols in the time domain, the second parameter is 10×lg (4/12) = -5. For another example, assuming that the reference time-domain unit comprises 12 preamble sequence symbols in the case of 15kHz and, correspondingly, 24 preamble sequence symbols in the case of 30kHz, the target preamble sequence format corresponds to 30kHz, the second parameter is 10 x lg (6/24) = -6 when the target preamble sequence format comprises 6 preamble sequence symbols in the time domain; alternatively, when the target preamble sequence format includes 4 preamble sequence symbols in the time domain, the second parameter is 10×lg (4/24) = -8.

Since the second parameter is calculated in a similar manner to the first parameter, it is not illustrated too much for brevity.

It should be understood that the above second parameter is only used for illustration, and the second parameter may also be other calculation formulas related to the number M of reference time domain units included in the target preamble sequence format, which is not limited in this embodiment of the present application.

In an embodiment, the second parameter may be directly used to determine delta_preamble in formula 1, for example, delta_preamble in formula 1 may be replaced by 10×lg (M), or the second parameter may be modified to determine delta_preamble in formula 1, for example, delta_preamble in formula 1 may be replaced by-10×lg (M).

In an embodiment, the power offset value may be determined according to a first parameter and a second parameter, and a manner of calculating the power offset value related to each of the first parameter and the second parameter will be described in connection with the embodiment.

By way of example and not limitation, the preamble sequence is transmitted in a frequency domain repetition within a certain bandwidth (e.g., 20 MHz), as shown in fig. 6. Assuming that the reference time domain unit includes the maximum number of preamble sequence symbols included in 1ms, for example, in the case of 15kHz, 30kHz, 60kHz, the maximum number of preamble sequence symbols included in 1ms is 12, 24, 48, respectively, and thus, in the case of 15kHz, 30kHz, 60kHz, the reference time domain unit includes 12, 24, 48 preamble sequence symbols, respectively, in the time domain. The reference frequency domain unit is assumed to include a Q MHz bandwidth, where Q is 2.16MHz (i.e., the frequency domain resource occupied by one PRACH resource structure in the case of 15 kHz). In fig. 6, in the case of 60kHz, the frequency domain includes 2 PRACH resource structures of 60kHz, the frequency domain resources occupied by the 2 PRACH resource structures of 60kHz are equivalent to the frequency domain resources occupied by the 8 PRACH resource structures of 15kHz, and the time domain includes 2 preamble sequence symbols, that is, in the case, includes 8 reference frequency domain units (n=8), and 2/48 reference time domain units (m=2/48). In the case of 30kHz, the frequency domain includes 4 PRACH resource structures of 30kHz, the frequency domain resources occupied by the 4 PRACH resource structures of 30kHz correspond to the frequency domain resources occupied by the 8 PRACH resource structures of 15kHz, and the time domain includes 2 preamble sequence symbols, that is, in this case, 8 reference frequency domain units (n=8), and 2/24 reference time domain units (m=2/24). In the case of 15kHz, the frequency domain includes 8 PRACH resource structures of 15kHz, and the time domain includes 2 preamble sequence symbols, i.e., in this case, 8 reference frequency domain units (n=8), 2/12 reference time domain units (m=2/12). Assuming that the power offset value is obtained by- (10×lg (M) +10×lg (N)), the power offset values respectively corresponding to the three cases in fig. 6 are respectively:

60kHz：-(10*lg(2/48)+10*lg(8))＝-10*lg(1/24)-10*lg(8)＝14-9＝5；

30kHz：-(10*lg(2/24)+10*lg(8))＝-10*lg(1/12)-10*lg(8)＝11-9＝2；

15kHz：-(10*lg(2/12)+10*lg(8))＝-10*lg(1/6)-10*lg(8)＝8-9＝-1。

For another example, assuming that the reference time domain unit includes time domain resources required for transmitting one PRACH resource structure (the time domain resources required for transmitting one PRACH resource structure are 1 symbol), the reference frequency domain unit includes frequency domain resources required for transmitting one PRACH resource structure, the frequency domain resources required for transmitting one target preamble sequence include 2 reference frequency domain units in the case of 60kHz, and the time domain resources required for transmitting one target preamble sequence include 2 reference time domain units; in the case of 30kHz, the frequency domain resource required for transmitting one target preamble sequence includes 4 reference frequency domain units, and the time domain resource required for transmitting one target preamble sequence includes 2 reference time domain units; in the case of 15kHz, the frequency domain resource required for transmitting one target preamble sequence includes 8 reference frequency domain units, and the time domain resource required for transmitting one target preamble sequence includes 2 reference time domain units, i.e., the three cases include 2, 4, 8 reference frequency domain units, 2, and 2 reference time domain units, respectively. Assuming that the power offset value is obtained by- (10×lg (M) +10×lg (N)), the power offset values respectively corresponding to the three cases in fig. 6 are respectively:

60kHz：-10*lg(2)-10*lg(2)＝-3-3＝-6；

30kHz：-10*lg(2)-10*lg(4)＝-3-6＝-9；

15kHz：-10*lg(2)-10*lg(8)＝-3-9＝-12。

for another example, it is assumed that the reference time domain unit includes the maximum number of preamble sequence symbols included in 1ms, for example, in the case of 15kHz, 30kHz, 60kHz, the maximum number of preamble sequence symbols included in 1ms is 12, 24, 48, respectively, and thus, in the case of 15kHz, 30kHz, 60kHz, the reference time domain unit includes 12, 24, 48 preamble sequence symbols, respectively, in the time domain. The reference frequency domain unit comprises 20MHz, and under the condition of 60kHz, the frequency domain resource required by transmitting one target preamble sequence is 20MHz, and the time domain resource required by transmitting one target preamble sequence is 2 symbols; under the condition of 30kHz, the frequency domain resource required by transmitting one target preamble sequence is 20MHz, and the time domain resource required by transmitting one target preamble sequence is 2 symbols; in the case of 15kHz, the frequency domain resource required for transmitting one target preamble sequence is 20MHz, and the time domain resource required for transmitting one target preamble sequence is 2 symbols, then the three cases respectively include 1, 1 reference frequency domain unit, 1/24, 1/12, 1/6 reference time domain unit. Assuming that the power offset value is obtained by- (10×lg (M) +10×lg (N)), the power offset values respectively corresponding to the three cases in fig. 6 are respectively:

60kHz：-10*lg(1/24)-10*lg(1)＝14-0＝14；

30kHz：-10*lg(1/12)-10*lg(1)＝11-0＝11；

15kHz：-10*lg(1/6)-10*lg(1)＝8-0＝8。

By way of example and not limitation, a preamble sequence is transmitted in a comb structure within a certain bandwidth (e.g., 20 MHz), and a target preamble sequence format including 2 symbols is used as an example, as shown in fig. 7. For example, it is assumed that the reference time domain unit includes the maximum number of preamble sequence symbols included within 1ms, e.g., the reference time domain unit includes 12 preamble sequence symbols in the time domain, and the reference frequency domain unit includes one PRB. In fig. 7, the frequency domain resources required for transmitting one target preamble sequence are respectively 12 PRBs and 6 PRBs, and then two cases in fig. 7 respectively include 12, 6 reference frequency domain units, 2/12, and 2/12 reference time domain units, and assuming that the power offset value is obtained by- (10×lg (M) +10×lg (N)), the power offset values respectively corresponding to the two cases in fig. 7 are respectively:

-10*lg(2/12)-10*lg(12)＝8-11＝-3；

-10*lg(2/12)-10*lg(6)＝8-8＝0。

in an embodiment of the present application, the power offset value is determined according to a third parameter, which is determined based on a reference subcarrier spacing. That is, the power offset value corresponding to the target preamble format may be determined directly according to the third parameter, or may be determined after the third parameter is deformed.

Wherein the reference subcarrier spacing is one of subcarrier spacing. In one embodiment, the reference subcarrier spacing may be considered as a subcarrier spacing with a corresponding power offset value of 0.

In an embodiment, the reference subcarrier interval may be a subcarrier interval with the smallest occupied frequency domain resource in the subcarrier intervals, or may be a subcarrier interval with the largest occupied frequency domain resource in the subcarrier intervals, or may also be a subcarrier interval with the specific occupied frequency domain resource in the subcarrier intervals, which is not limited in this application.

In an embodiment, the target preamble format corresponds to a target subcarrier spacing, the ratio between the target subcarrier spacing and the reference subcarrier spacing may be to the power of 2 μ, and the third parameter may be 3×μ.

For example, the reference subcarrier spacing is 15kHz and the target subcarrier spacing is 30kHz, i.e., μ=1. The reference preamble sequence format corresponds to the reference subcarrier interval, the reference preamble sequence format includes M symbols in the time domain, the target preamble sequence format also includes M symbols in the time domain, and the power offset value of the target preamble sequence format is determined according to the parameter m+3, assuming that the power offset value corresponding to the reference preamble sequence format is determined according to the parameter M. I.e. the parameters for determining the power offset value may be different at different subcarrier spacings in case the number of reference time domain units comprised in the time domain is the same.

In an embodiment, the target preamble format corresponds to a target subcarrier spacing, the ratio between the target subcarrier spacing and the reference subcarrier spacing may be to the power of 2 μ, and the third parameter may be 0.

For example, the reference subcarrier spacing is 15kHz and the target subcarrier spacing is 30kHz, i.e., μ=1. The reference preamble sequence format corresponds to the reference subcarrier interval, the reference preamble sequence format includes N PRBs in the frequency domain, the target preamble sequence format also includes N PRBs in the frequency domain, and if the power offset value corresponding to the reference preamble sequence format is determined according to the parameter N, the power offset value of the target preamble sequence format is also determined according to the parameter N. I.e. the parameters for determining the power offset value at different subcarrier spacings may be identical in case the number of reference frequency domain units comprised in the frequency domain is identical. This is mainly because the maximum transmit power per bandwidth of the terminal device is limited in the unlicensed band, i.e. the maximum transmit power per PRB of the terminal device is the same regardless of the subcarrier spacing of 15kHz, or 30kHz, or 60 kHz.

It should be understood that the third parameter is only used for illustration, and the third parameter may be other calculation formulas related to μ, which is not limited in this embodiment of the present application.

It should be noted that, for the UE, the power offset value may be obtained by looking up a table, for example, a mapping table of the preamble format and the power offset value, where the mapping table may be formed by calculating at least one of the first parameter, the second parameter, and the third parameter. Or the power offset value may be obtained by the UE calculating at least one of the first parameter, the second parameter, and the third parameter.

In an embodiment, the PRACH channel is configured to transmit the target preamble sequence and the first data, and the method further comprises:

and determining the transmission power of the first data according to the transmission power of the target preamble sequence.

It should be appreciated that in some scenarios, such as a two-step random access procedure, the terminal device needs to transmit uplink data in addition to the preamble sequence on the PRACH channel to send more information to the network device. In these scenarios, the terminal device also needs to determine the transmit power of the uplink data (i.e. the first data).

In an embodiment, the difference between the transmission power of the target preamble sequence and the transmission power of the first data is a first power offset value, wherein the first power offset value is preset or indicated by the system or the network device through indication information.

In an embodiment, the indication information may be at least one of physical layer signaling, radio resource control (Radio Resource Control, RRC) signaling, and medium access control (Media Access Control, MAC) signaling.

In one embodiment, the first power offset value is 0.

In one embodiment, the first power offset value is negative. This is mainly because the signal-to-noise ratio required for data demodulation is generally greater than that required for preamble sequence demodulation, and therefore, when the terminal device determines the transmit power of the target preamble sequence and the first data, it can determine that the transmit power of the first data is greater than that of the target preamble sequence.

It should be understood that the interactions between the network device and the terminal device described by the network device and the related characteristics, functions, etc. correspond to the related characteristics, functions of the terminal device. That is, what messages the terminal device sends to the network device, the network device receives the corresponding messages from the terminal device. For example, the terminal device transmits a target preamble sequence to the network device at the determined transmit power, and the network device receives the target preamble sequence from the terminal device.

It should also be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Having described the method for determining the preamble sequence transmit power in detail according to the embodiments of the present application, the apparatus for determining the preamble sequence transmit power according to the embodiments of the present application will be described below with reference to fig. 8 and 9, and technical features described in the method embodiments are applicable to the following apparatus embodiments.

Fig. 8 shows a schematic block diagram of a communication device 300 of an embodiment of the present application. As shown in fig. 8, the communication apparatus 300 includes:

a processing unit 310, configured to determine a power offset value corresponding to a target preamble sequence format, and determine a transmit power of the target preamble sequence according to the power offset value, where the target preamble sequence corresponds to the target preamble sequence format.

Therefore, the communication device in the embodiment of the application determines the transmitting power of the preamble sequence in the preamble sequence format by determining the power offset value corresponding to the preamble sequence format, which is beneficial to making the transmitting power of the corresponding preamble sequence in multiple preamble sequence formats identical.

In this embodiment of the present application, the power offset value is determined according to the number N of reference frequency domain units included in the target preamble sequence format.

In this embodiment of the present application, the power offset value is determined according to the number N of reference frequency domain units included in the target preamble sequence format, and includes: the power offset value is determined based on a first parameter, the first parameter being 10 x lg (N).

In an embodiment of the present application, the power offset value includes (-10 x lg (N)).

In an embodiment of the present application, the reference frequency domain unit includes one of the following: the method comprises the steps of referring to frequency domain resources included in a preamble sequence format, wherein the reference preamble sequence format is one of preamble sequence formats; a frequency domain resource included in the reference preamble sequence format included in the reference bandwidth; a frequency domain resource included in the target preamble sequence format included in the reference bandwidth; p physical resource blocks PRB; q MHz bandwidth.

In this embodiment of the present application, the reference preamble sequence format is a preamble sequence format with the smallest occupied frequency domain resource in the preamble sequence formats, or the reference preamble sequence format is a preamble sequence format with the largest occupied frequency domain resource in the preamble sequence formats.

In this embodiment of the present application, the power offset value is determined according to the number M of reference time domain units included in the target preamble sequence format.

In this embodiment of the present application, the power offset value is determined according to the number M of reference time domain units included in the target preamble sequence format, and includes: the power offset value is determined based on a second parameter, the second parameter being 10 x lg (M).

In the present embodiment, the power offset value includes (-10×lg (M)).

In an embodiment of the present application, the reference time domain unit includes one of the following: the method comprises the steps of referring to time domain resources included in a preamble sequence format, wherein the reference preamble sequence format is one of the preamble sequence formats; a time domain resource included in the reference preamble sequence format included in the reference time; time domain resources included in the target preamble sequence format included in the reference time; r ms; s symbols.

In this embodiment of the present application, the reference preamble sequence format is a preamble sequence format with the smallest occupied time domain resource in the preamble sequence formats, or the reference preamble sequence format is a preamble sequence format with the largest occupied time domain resource in the preamble sequence formats.

In an embodiment of the present application, the power offset value is determined according to a third parameter, which is determined based on a reference subcarrier spacing.

In this embodiment of the present application, a ratio of the target subcarrier spacing corresponding to the target preamble sequence format to the reference subcarrier spacing is to the power μ of 2, and the third parameter is 0 or the third parameter is 3×μ.

In the embodiment of the present application, the processing unit 310 is further configured to: and determining the transmission power of the first data according to the transmission power of the target preamble sequence, wherein the first data and the target preamble sequence are transmitted through the PRACH channel.

It should be understood that the communication device 300 according to the embodiments of the present application may correspond to the communication device in the embodiments of the method of the present application, and the foregoing and other operations and/or functions of each unit in the communication device 300 are respectively for implementing the corresponding flow of the communication device in the method of fig. 2, and are not described herein for brevity.

As shown in fig. 9, the embodiment of the present application further provides a communication device 400, which may be the communication device 300 in fig. 8, which can be used to perform the content of the communication device corresponding to the method 200 in fig. 2. The communication device 400 shown in fig. 9 comprises a processor 410, from which the processor 410 may call and run a computer program to implement the method in the embodiments of the present application.

In one embodiment, as shown in fig. 9, the communication device 400 may also include a memory 420. Wherein the processor 410 may call and run a computer program from the memory 420 to implement the methods in embodiments of the present application.

Wherein the memory 420 may be a separate device from the processor 410 or may be integrated into the processor 410.

In an embodiment, as shown in fig. 9, the communication device 400 may further include a transceiver 430, and the processor 410 may control the transceiver 430 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

Among other things, transceiver 430 may include a transmitter and a receiver. Transceiver 430 may further include antennas, the number of which may be one or more.

In an embodiment, the communication device 400 may be a communication device in the embodiments of the present application, and the communication device 400 may implement corresponding flows implemented by the communication device in each method in the embodiments of the present application, which are not described herein for brevity.

In a specific embodiment, the processing unit in the communication device 300 may be implemented by the processor 410 in fig. 9.

Fig. 10 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 500 shown in fig. 10 includes a processor 510, and the processor 510 may call and run a computer program from a memory to implement the methods in the embodiments of the present application.

In one embodiment, as shown in FIG. 10, the chip 500 may also include a memory 520. Wherein the processor 510 may call and run a computer program from the memory 520 to implement the methods in embodiments of the present application.

Wherein the memory 520 may be a separate device from the processor 510 or may be integrated into the processor 510.

In one embodiment, the chip 500 may also include an input interface 530. The processor 510 may control the input interface 530 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

In one embodiment, the chip 500 may also include an output interface 540. Wherein the processor 510 may control the output interface 540 to communicate with other devices or chips, and in particular may output information or data to other devices or chips.

In an embodiment, the chip may be applied to the communication device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the communication device in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is exemplary and not limiting, and for example, the memory in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link Dynamic Random Access Memory (SLDRAM), direct memory bus random access memory (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

In an embodiment, the computer readable storage medium may be applied to the communication device in the embodiments of the present application, and the computer program causes a computer to execute corresponding processes implemented by the mobile terminal/communication device in the methods in the embodiments of the present application, which are not described herein for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

In an embodiment, the computer program product may be applied to the communication device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding flow implemented by the mobile terminal/communication device in each method in the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program.

In an embodiment, the computer program may be applied to the communication device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the communication device in the methods in the embodiments of the present application, which are not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for determining preamble sequence transmit power, comprising:

determining power offset values corresponding to target preamble sequence formats under different conditions;

determining the transmitting power of a target preamble sequence according to the power offset value, wherein the target preamble sequence corresponds to the target preamble sequence format, and the transmitting power of the target preamble sequence corresponding to the target preamble sequence format is the same under different conditions;

wherein the power offset value is determined according to the number N of reference frequency domain units included in the target preamble sequence format, or the power offset value is determined according to the number M of reference time domain units included in the target preamble sequence format, or the power offset value is determined according to a third parameter, which is determined based on a reference subcarrier spacing;

the reference frequency domain unit includes one of the following: the method comprises the steps of referring to frequency domain resources included in a preamble sequence format, wherein the reference preamble sequence format is one of preamble sequence formats; a frequency domain resource included in the reference preamble sequence format included in the reference bandwidth; a frequency domain resource included in the target preamble sequence format included in the reference bandwidth; p physical resource blocks PRB; a Q MHz bandwidth;

The reference time domain unit includes one of the following: the method comprises the steps of referring to time domain resources included in a preamble sequence format, wherein the reference preamble sequence format is one of the preamble sequence formats; a time domain resource included in the reference preamble sequence format included in the reference time; time domain resources included in the target preamble sequence format included in the reference time; r ms; s symbols.

2. The method of claim 1, wherein the power offset value is determined according to a number N of reference frequency domain units included in the target preamble sequence format, comprising:

the power offset value is determined based on a first parameter, the first parameter being 10 x lg (N).

3. The method of claim 2, wherein the power offset value comprises (-10 x lg (N)).

4. The method of claim 1, wherein the reference preamble sequence format is a preamble sequence format that occupies a minimum of frequency domain resources among the preamble sequence formats, or

And the reference preamble sequence format is the preamble sequence format with the largest occupied frequency domain resource in the preamble sequence format.

5. The method of claim 1, wherein the power offset value is determined according to a number M of reference time domain units included in the target preamble sequence format, comprising:

The power offset value is determined based on a second parameter, the second parameter being 10 x lg (M).

6. The method of claim 5, wherein the power offset value comprises (-10 x lg (M)).

7. The method of claim 1, wherein the reference preamble sequence format is a preamble sequence format that occupies a minimum of time domain resources among the preamble sequence formats, or

And the reference preamble sequence format is the preamble sequence format which occupies the largest time domain resource in the preamble sequence format.

8. The method of claim 1, wherein when the power offset value is determined according to the third parameter, a ratio of the target subcarrier spacing corresponding to the target preamble format to the reference subcarrier spacing is to the power of 2 μ, and the third parameter is 0 or the third parameter is 3 μ.

9. A communication device, comprising:

a processing unit for determining power offset values corresponding to the target preamble sequence formats under different conditions, and

10. The communication device of claim 9, wherein the power offset value is determined according to a number N of reference frequency domain units included in the target preamble sequence format, comprising:

11. The communication device of claim 10, wherein the power offset value comprises (-10 x lg (N)).

12. The communication device according to claim 9, wherein the reference preamble sequence format is a preamble sequence format occupying least frequency domain resources among the preamble sequence formats, or

13. The communication device of claim 9, wherein the power offset value is determined according to a number M of reference time domain units included in the target preamble sequence format, comprising:

14. The communication device of claim 13, wherein the power offset value comprises (-10 x lg (M)).

15. The communication device according to claim 9, wherein the reference preamble sequence format is a preamble sequence format occupying least time domain resources among the preamble sequence formats, or

16. The communication device of claim 9, wherein when the power offset value is determined according to the third parameter, a ratio of the target subcarrier spacing corresponding to the target preamble format to the reference subcarrier spacing is to the power of 2 μ, and the third parameter is 0 or the third parameter is 3 μ.

17. A communication device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method according to any of claims 1 to 8.

18. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 8.

19. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 8.