WO2020082215A1 - Method for determining transmit power for preamble sequence and communication device - Google Patents

Abstract

Disclosed in embodiments of the present invention are a method for determining a transmit power for a preamble sequence and a communication device. The method comprises: determining a power offset value corresponding to a target preamble sequence format; and determining a transmit power for a target preamble sequence according to the power offset value, wherein the target preamble sequence corresponds to the target preamble sequence format. The method and the communication device provided in the embodiments of the present invention facilitate realizing use of the same transmit power for preamble sequences corresponding to various preamble sequence formats.

Description

Method and communication equipment for determining preamble sequence transmission power Technical field

Embodiments of the present application relate to the field of communications, and in particular, to a method and a communication device for determining the transmission power of a preamble sequence.

Background technique

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

Summary of the invention

The embodiments of the present application provide a method and a communication device for determining the transmission power of a preamble sequence, which are beneficial to determine the transmission power of a corresponding preamble sequence in multiple preamble sequence formats.

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

In a second aspect, a communication device is provided for executing the method in the above-mentioned first aspect or various implementations thereof.

Specifically, the communication device includes a functional module for performing the method in the above-mentioned first aspect or various implementations thereof.

In a third aspect, a communication device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or its various implementations.

According to a fourth aspect, there is provided a chip for implementing the method in the above first aspect or each implementation manner thereof.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the method as described in the first aspect or its various implementations.

According to a fifth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to execute the method in the first aspect or its various implementations.

According to a sixth aspect, a computer program product is provided, including computer program instructions, which cause the computer to execute the method in the first aspect or its various implementations.

In a seventh aspect, a computer program is provided, which when run on a computer, causes the computer to execute the method in the first aspect or its various implementations.

Through the above technical solution, by determining the power offset value corresponding to the preamble sequence format, thereby determining the transmission power of the preamble sequence in the preamble sequence format, it is beneficial to make the transmission power of the corresponding preamble sequences in multiple preamble sequence formats the same.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.

2 is a schematic block diagram of a method for determining a preamble transmission power provided by an embodiment of the present application.

FIG. 3 is a distribution diagram of PRACH resource structures in the frequency domain in different situations.

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

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

7 is another schematic diagram of determining a power offset value corresponding to a preamble sequence format provided by an embodiment of the present application.

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

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

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

detailed description

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of this application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile (GSM) system, Code Division Multiple Access (CDMA) system, and Broadband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system , New Radio (NR) system, evolved system of NR system, LTE (LTE-based access to unlicensed spectrum) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) system on unlicensed spectrum Unlicensed spectrum (NR-U) system, Universal Mobile Telecommunication System (UMTS), wireless local area network (Wireless Local Area Area Networks, WLAN), wireless fidelity (Wireless Fidelity, WiFi), next-generation communication system or other communications System etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, device to device (Device to Device, D2D) communication, machine-to-machine (M2M) communication, machine type communication (MTC), and vehicle-to-vehicle (V2V) communication, etc. The embodiments of the present application can also be applied to these communications system.

The embodiments of the present application do not limit the applied spectrum. For example, the embodiments of the present application may be applied to licensed spectrum or unlicensed spectrum.

Exemplarily, the communication system 100 applied in the embodiment of the present application 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). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located within the coverage area. Optionally, 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, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in the cloud radio access network (Cloud Radio Access Network, CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or network devices in future public land mobile networks (Public Land Mobile Network, PLMN), etc.

The communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. As used herein, "terminal equipment" includes but is not limited to user equipment (User Equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, Terminal, wireless communication device, user agent or user device. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital processing (Personal Digital Assistant (PDA), wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or public land mobile communications networks (PLMN) in the future evolution Terminal devices and the like are not limited in the embodiments of the present invention.

Optionally, terminal device 120 may perform terminal direct connection (Device to Device, D2D) communication.

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

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

It should be understood that the devices with communication functions in the network / system in the embodiments of the present application may be referred to as communication devices. 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 a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in the embodiments of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" in this article is just an association relationship that describes an associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist at the same time, exist alone B these three cases. In addition, the character “/” in this article generally indicates that the related objects before and after are in an “or” relationship.

It should be understood that, in the embodiment of the present application, the transmit power of the preamble sequence is determined according to the power offset value.

Optionally, in the embodiment of the present application, the transmit power of the preamble sequence can be determined by the following formula:

PREAMBLE_RECEIVED_TARGET_POWER = preambleReceivedTargetPower + DELTA_PREAMBLE + (PREAMBLE_POWER_RAMPING_COUNTER–1) × PREAMBLE_POWER_RAMPING_STEP (Formula 1).

Among them, preambleReceivedTargetPower is the target received power of the preamble sequence configured by the network device, this parameter can be determined by the high-level configuration; PREAMBLE_POWER_RAMPING_COUNTER is the calculator of the number of power increases of the preamble sequence transmission, this parameter can be determined according to the number of preamble sequence transmissions; PREAMBLE_POWER_RAMPING_STEP Power lift factor, this parameter can be determined through high-level configuration; DELTA_PREAMBLE is the power offset value, that is, the parameter value involved in the embodiment of the present application.

P_PRACH = min {P_CMAX, PREAMBLE_RECEIVED_TARGET_POWER + PL} [dBm] (Equation 2).

Where, P_PRACH is the target preamble transmission power; P_CMAX is the maximum transmission power configured by the terminal device; PREAMBLE_RECEIVED_TARGET_POWER is the target received power of the preamble sequence calculated by the terminal device; PL is the path loss value measured by the terminal device 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. Therefore, the power offset values corresponding to different preamble sequence formats need to be determined, so as to determine the transmit power of the preamble sequences corresponding to different preamble sequence formats.

FIG. 2 shows a schematic block diagram of a method 200 for determining a preamble transmission power according to 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: Determine a power offset value corresponding to the target preamble sequence format;

S220. Determine the 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.

That is, the terminal device can determine the transmit power of the preamble sequence in the preamble sequence format by determining the power offset value corresponding to the preamble sequence format. For example, the power offset value can be determined by the target preamble sequence format and Table 1. The mapping relationship between the preamble sequence format and the power offset value is determined:

Table 1

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

Among them, the mapping relationship in Table 1 may be configured by a high layer, or may be agreed by a protocol.

In the unlicensed frequency band, the preamble sequence may occupy in the frequency domain compared with the preamble sequence on the licensed frequency band in order to allow the terminal device to transmit uplink data to meet the target that the signal occupies at least 80% of the channel bandwidth and maximize the transmit power of the upstream signal A larger bandwidth, that is, the transmission structure of the preamble sequence in PRACH may include at least one of the PRACH resource structures in the four cases shown in FIG. 3 in the frequency domain. Among them, a preamble sequence format may include one or more PRACH resource structures.

Taking a subcarrier spacing (SCS, SCS) size of 15 kHz and 106 physical resource blocks (PRB) in 20 MHz as an example, each PRB includes 12 subcarriers.

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

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

In case 3, one PRACH resource structure occupies several subcarriers in each PRB of several PRBs that are equally spaced and discretely distributed, for example, occupying the 0th, 2nd in each PRB of the 11 PRBs of the comb-tooth structure , 4, 6, 8, 10 subcarriers.

In case 4, a PRACH resource structure occupies several subcarriers that are discretely distributed at equal intervals, for example, occupies 22 subcarriers, where the 22 subcarriers are equally spaced within a 20MHz bandwidth, specifically 0, 5, 10, 15 , 20, 25, ..., the first subcarrier of 90, 95, 100, 105 PRBs.

It should be understood that in the unlicensed frequency band, the maximum transmission power of the communication device per unit bandwidth is limited, that is, the communication device needs to comply with the index requirement of the maximum transmission power spectral density, therefore, the preamble sequence on the unlicensed frequency band needs to be designed reasonably The power offset value in the format.

Optionally, in the 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. Optionally, 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. Among them, N can be an integer or a fraction.

The reference frequency domain unit may refer to any one of the following cases: the frequency domain resource included in the reference preamble sequence format, where the reference preamble sequence format is one of the preamble sequence formats, optionally, the reference preamble sequence format It can be considered that the corresponding preamble sequence format has a 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 PRB; and Q MHz bandwidth, etc.

Optionally, the reference preamble sequence format may be the preamble sequence format that occupies the smallest frequency domain resource in the preamble sequence format, or may be the preamble sequence format that occupies the largest frequency domain resource in the preamble sequence format, or may also be the preamble sequence format that occupies The preamble sequence format of a specific frequency domain resource is not limited to this embodiment of the present application.

In the following, with reference to FIG. 4, how the terminal device determines the power offset value according to the number N of reference frequency domain units included in the target preamble sequence format in various cases in FIG. 3 will be described in detail below. In the above cases, it can be considered that the method for determining the power offset value corresponding to the preamble format of case 3 and case 4 is similar to that of case 2, therefore, the power of the two cases of case 1 and case 2 are mainly considered below Determination of the offset value.

If the PRACH format includes the PRACH resource structure in case 1, the reference frequency domain unit may include the frequency domain resources included in the reference preamble sequence format, or may also include the frequency domain resources required to transmit a PRACH resource structure, or may also include The frequency domain resource included in the reference preamble sequence format included in the reference bandwidth 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.

Optionally, the reference frequency domain unit includes frequency domain resources included in a reference preamble sequence format, wherein the reference preamble sequence format is one of preamble sequence formats. For example, if the reference preamble sequence format includes A PRACH resource structures in the frequency domain and the target preamble sequence format includes B PRACH resource structures in the frequency domain, then the target preamble sequence format includes (B / A) reference frequency domain units, namely The power offset value can be determined according to (B / A). Further, the power offset value may be determined according to a first parameter, and the first parameter may be 10 * lg (B / A). For another example, the reference preamble sequence format includes A PRBs in the frequency domain, and the target preamble sequence format includes B PRBs in the frequency domain, then the target preamble sequence format includes (B / A) reference frequency domain units. The shift value can be determined according to (B / A). Further, the power offset value may be determined according to a first parameter, and the first parameter may be 10 * lg (B / A). For another example, the reference preamble sequence format includes A MHz bandwidth in the frequency domain, and the target preamble sequence format includes B MHz bandwidth in the frequency domain. Then the target preamble sequence format includes (B / A) reference frequency domain units. The shift value can be determined according to (B / A). Further, the power offset value may be determined according to a first parameter, and the first parameter may be 10 * lg (B / A).

Optionally, the reference frequency domain unit includes frequency domain resources needed to transmit a PRACH resource structure. For example, the target preamble sequence format in the case of 15 kHz in FIG. 4 includes 8 PRACH resource structures, then the target preamble sequence format includes 8 reference frequency domain units. It is assumed that the power offset value is also determined according to the above first parameter, that is, the first One parameter is 10 * lg (8) = 9. For another example, the target preamble sequence format in the case of 30 kHz in FIG. 4 includes 4 PRACH resource structures, then the target preamble sequence format includes 4 reference frequency domain units, assuming that the power offset value is also determined according to the above first parameter, that is, the The first parameter is 10 * lg (4) = 6. For another example, the target preamble sequence format at 60 kHz in FIG. 4 includes 2 PRACH resource structures, then the target preamble sequence format includes 2 reference frequency domain units, assuming that the power offset value is also determined according to the above first parameter, that is, the The first parameter is 10 * lg (2) = 3.

Optionally, the reference frequency domain unit includes the frequency domain resources required by the maximum number of PRACH resource structures included in the reference bandwidth. For example, the reference bandwidth is 20 MHz. Within 20 MHz, for the case of 15 kHz, 30 kHz, and 60 kHz, the corresponding reference frequency domain unit includes 8, 4 and 2 PRACH resource structures, respectively. Assume that the target preamble sequence format at 15 kHz in Fig. 4 includes 8 PRACH resource structures, the target preamble sequence format at 30 kHz in Fig. 4 includes 4 PRACH resource structures, and the target preamble sequence format at 60 kHz in Fig. 4 includes 2 PRACH resource structure, then in the case of 15kHz, 30kHz and 60kHz, the target preamble sequence format includes a reference frequency domain unit, 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 20 MHz. Within 20 MHz, for 15 kHz, 30 kHz, and 60 kHz, the corresponding reference frequency domain unit includes 8, 4 and 2 PRACH resource structures, respectively. Assuming that the target preamble sequence format in each of the three cases in FIG. 4 includes only two PRACH resource structures, then the reference frequency domain unit included in the target preamble sequence format at 15 kHz is (2/8), and the first parameter is 10 * lg (2/8) =-6, the reference frequency domain unit included in the target preamble sequence format is (2/4) at 30kHz, and the first parameter is 10 * lg (2/4) =-3, In the case of 60 kHz, the reference frequency domain unit included in the target preamble sequence format is (2/2), and the first parameter is 10 * lg (2/2) = 0.

Optionally, the reference frequency domain unit includes frequency domain resources included in the reference preamble sequence format included in the reference bandwidth. For example, the reference bandwidth is 10 MHz, and the frequency domain resource included in the reference preamble sequence format is the frequency domain resource required by the maximum number of PRACH resource structures included in the reference bandwidth. For example, within 10 MHz, for the case of 15 kHz, 30 kHz, and 60 kHz, the reference preamble sequence format includes 4, 2 and 1 PRACH resource structure, respectively. The actual transmission bandwidth is 20MHz. For example, as shown in FIG. 4, the target preamble sequence format at 15kHz in FIG. 4 includes 8 PRACH resource structures, and the target preamble sequence format at 30kHz in FIG. 4 includes 4 PRACH resource structures. The target preamble sequence format at 60 kHz in Fig. 4 includes 2 PRACH resource structures. Then the reference frequency domain unit included in the target preamble sequence format at 15kHz is (8/4), the first parameter is 10 * lg (8/4) = 3, and the reference frequency included at the target preamble sequence format at 30kHz The domain unit is (4/2), the first parameter is 10 * lg (4/2) = 3, and the reference frequency domain unit included in the target preamble sequence format at 60 kHz is (2/1), the first parameter It is 10 * lg (2/1) = 3.

Optionally, the reference frequency domain unit includes QMHz bandwidth. For example, assuming that the reference frequency domain unit Q is 2.16MHz (that is, the frequency domain resource occupied by a PRACH resource structure in the case of 15kHz), if the target preamble sequence formats in the three cases in FIG. 4 include only two PRACHs, respectively Resource structure, then the bandwidth occupied by the target preamble sequence format at 15 kHz is 4.32 MHz, 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 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 60 kHz, the bandwidth occupied by the target preamble sequence format is 17.28 MHz, 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 4.32 MHz (that is, the frequency domain resources occupied by one PRACH resource structure in the case of 30 kHz), if the target preamble sequence formats in each of the three cases in FIG. 4 include only two PRACH resource structure, then the bandwidth occupied by the target preamble sequence format at 15 kHz is 4.32 MHz, that is, 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, in the case of 30 kHz, the bandwidth occupied by the target preamble sequence format is 8.64 MHz, 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, at 60 kHz, the bandwidth occupied by the target preamble sequence format is 17.28 MHz, 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 the frequency domain resources included in the reference preamble sequence format, or may also include the frequency domain resources required to transmit a PRACH resource structure, or may also include P PRB, or may also include Q MHz bandwidth, etc. The reference frequency domain unit includes the frequency domain resources included in the reference preamble sequence format or the frequency domain resources required to transmit a PRACH resource structure. The examples are the same as described above, and are not repeated here for brevity.

Because in the unlicensed frequency band, the maximum transmission power of the terminal equipment in unit bandwidth is limited, that is, regardless of the subcarrier spacing of 15kHz, or 30kHz, or 60kHz, the maximum transmission power of the terminal equipment on each PRB is the same Therefore, optionally, the reference frequency domain unit includes P PRBs. For example, suppose P is 1 PRB, and the target preamble sequence format at 15 kHz in Fig. 5 includes 11 PRBs, the target preamble sequence format at 30 kHz in Fig. 5 includes 13 PRBs, and the target at 60 kHz in Fig. 5 The preamble sequence format includes 12 PRBs, then, at 15 kHz, the target preamble sequence format includes 11 reference frequency domain units, and the first parameter is 10 * lg (11) = 10; at 30 kHz, the target preamble sequence format includes 13 For a PRB, the first parameter is 10 * lg (13) = 11; in the case of 60 kHz, the target preamble sequence format includes 12 reference frequency domain units, and the first parameter is 10 * lg (12) = 11. For another example, assume that P is 10 PRBs, and the target preamble sequence format at 15 kHz in FIG. 5 includes 20 PRBs, and the target preamble sequence format at 30 kHz in FIG. 5 includes 10 PRBs, and the 60 kHz in FIG. 5 The target preamble sequence format includes 5 PRBs, then, at 15 kHz, the target preamble sequence format includes (20/10) reference frequency domain units, and the first parameter is 10 * lg (20/10) = 3; at 30 kHz , The target preamble sequence format includes (10/10) PRBs, the first parameter is 10 * lg (1) = 0; at 60 kHz, the target preamble sequence format includes (5/10) reference frequency domain units, the One parameter is 10 * lg (5/10) =-3.

It should be understood that the above-mentioned first parameter is for illustrative purposes only, 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.

Optionally, the first parameter may be directly used to determine DELTA_PREAMBLE in Formula 1, for example, replacing DELTA_PREAMBLE in Formula 1 with 10 * lg (N), the first parameter may also be used to determine Formula 1 after being deformed DELTA_PREAMBLE in, for example, you can replace DELTA_PREAMBLE in Equation 1 with -10 * lg (N).

Therefore, the method for determining the transmission power of the preamble sequence provided in the embodiment of the present application may consider the power offset value corresponding to the preamble sequence format with different frequency domain repetitions, or the corresponding preamble sequence format may include reference units to obtain the corresponding The power offset value, so that the transmit power of the corresponding preamble sequence under different preamble sequence formats can be obtained.

Optionally, in the 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. Optionally, in the 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. Among them, M can be an integer or a fraction.

The reference time domain unit may refer to any one of the following cases: the reference preamble sequence format includes time domain resources, where the reference preamble sequence format is one of the preamble sequence formats, optionally, the reference preamble sequence format It can be considered as the corresponding preamble sequence format with a power offset value of 0; the time domain resource included in the reference preamble sequence format included in the reference bandwidth or the time domain resource included in the target preamble sequence format included in the reference bandwidth; R ms; S symbols, etc.

Alternatively, the reference preamble sequence format may be a preamble sequence format that occupies the smallest time domain resource in the preamble sequence format, or may be a preamble sequence format that occupies the largest time domain resource in the preamble sequence format, or may also be an occupancy in the preamble sequence format The format of the preamble sequence of a specific time domain resource is not limited to this embodiment of the present application.

Optionally, the power offset value may be determined according to a second parameter, and the second parameter may be 10 * lg (M). The calculation method of the second parameter will be described below in conjunction with several specific embodiments.

Optionally, the reference time domain unit includes time domain resources included in the reference preamble sequence format. For example, if the reference preamble sequence format includes C symbols in the time domain, and the target preamble sequence format includes D symbols in the time domain, then the target preamble sequence format includes (D / C) reference time domain units, and the power bias The shift value may be determined according to the second parameter, which may be 10 * lg (D / C). For another example, if the reference preamble sequence format includes C microsecond time resources in the time domain, and the target preamble sequence format includes D microsecond time resources in the time domain, then the target preamble sequence format includes (D / C) references In the time domain unit, the power offset value may be determined according to the second parameter, and the second parameter may be 10 * lg (D / C).

Optionally, the reference time domain unit includes the time domain resources required by the maximum number of PRACH resource structures included in the reference time. For example, the reference time is 1 ms, and within 1 ms, the reference time domain unit includes E preamble symbols in the time domain, and the target preamble sequence format includes F preamble symbols in the time domain, then the target preamble sequence format includes ( F / E) reference time domain units, the power offset value may be determined according to a second parameter, and the second parameter may be 10 * lg (F / E). For example, suppose that within 1 ms, the reference time domain unit includes 12 preamble sequence symbols at 15 kHz, and the target preamble sequence format corresponds to 15 kHz. When the target preamble sequence format includes 6 preamble sequence symbols in the time domain, the second parameter is 10 * lg (6/12) =-3; or, when the target preamble sequence format includes 4 preamble symbols in the time domain, the second parameter is 10 * lg (4/12) =-5. For another example, assuming that within 1 ms, the reference time domain unit includes 12 preamble sequence symbols at 15 kHz, and correspondingly, the reference time domain unit includes 24 preamble sequence symbols at 30 kHz, and the target preamble sequence format corresponds to 30 kHz. When the target preamble sequence format When 6 preamble symbols are included in the time domain, the second parameter is 10 * lg (6/24) =-6; or, when the target preamble sequence format includes 4 preamble symbols in the time domain, the first The second parameter is 10 * lg (4/24) =-8.

Since the calculation method of the second parameter is similar to the calculation method of the first parameter, for the sake of brevity, we will not give too many examples here.

It should be understood that the above-mentioned second parameter is for illustrative purposes only, 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 the embodiment of the present application.

Optionally, the second parameter can be directly used to determine DELTA_PREAMBLE in Formula 1, for example, replacing DELTA_PREAMBLE in Formula 1 with 10 * lg (M), the second parameter can also be used to determine the formula after deformation DELTA_PREAMBLE in 1, for example, you can replace DELTA_PREAMBLE in Equation 1 with -10 * lg (M).

Optionally, the power offset value may be determined jointly according to the first parameter and the second parameter. The calculation method of the power offset value related to both the first parameter and the second parameter will be described below in conjunction with the embodiment.

As an example and not a limitation, the preamble sequence is transmitted in a frequency domain repeated within a certain bandwidth (for example, 20 MHz), as shown in FIG. 6. Assuming that the reference time-domain unit includes the maximum number of preamble symbols included in 1 ms, for example, in the case of 15 kHz, 30 kHz, and 60 kHz, the maximum number of preamble symbols included in 1 ms is 12, 24, and 48, respectively, therefore, In the case of 15 kHz, 30 kHz, and 60 kHz, the reference time-domain unit includes 12, 24, and 48 preamble symbols in the time domain, respectively. It is assumed that the reference frequency domain unit includes QMHz bandwidth, where Q is 2.16MHz (that is, frequency domain resources occupied by a PRACH resource structure in the case of 15kHz). In FIG. 6, in the case of 60 kHz, the frequency domain includes two 60 kHz PRACH resource structures, and the frequency domain resources occupied by the two 60 kHz PRACH resource structures are equivalent to the frequency domain resources occupied by eight 15 kHz PRACH resource structures, The time domain includes 2 preamble symbols, that is, in this case, 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 four 30kHz PRACH resource structures, the frequency domain resources occupied by the four 30kHz PRACH resource structures are equivalent to the frequency domain resources occupied by eight 15kHz PRACH resource structures, 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) are included. In the case of 15kHz, 8 PRACH resource structures of 15kHz are included in the frequency domain, and 2 preamble sequence symbols are included in the time domain, that is, in this case, 8 reference frequency domain units (N = 8) are included, and 2/12 reference times Domain unit (M = 2/12). Assuming that the power offset value is obtained by-(10 * lg (M) + 10 * lg (N)), the power offset values corresponding to the three cases in FIG. 6 are:

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, suppose that the reference time domain unit includes the time domain resource required to transmit a PRACH resource structure (the time domain resource required to transmit a PRACH resource structure is 1 symbol), and the reference frequency domain unit includes the frequency required to transmit a PRACH resource structure. Domain resources, in the case of 60kHz, the frequency domain resources required to transmit a target preamble sequence include 2 reference frequency domain units, and the time domain resources required to transmit a target preamble sequence include 2 reference time domain units; in the case of 30kHz , The frequency domain resource required to transmit a target preamble sequence includes 4 reference frequency domain units, and the time domain resource required to transmit a target preamble sequence includes 2 reference time domain units; in the case of 15kHz, the transmission of a target preamble sequence requires The frequency domain resource includes 8 reference frequency domain units, and the time domain resource required to transmit a target preamble sequence includes 2 reference time domain units, that is, these three cases include 2, 4, and 8 reference frequency domain units, respectively. , 2 reference time domain units. Assuming that the power offset value is obtained by-(10 * lg (M) + 10 * lg (N)), the power offset values corresponding to the three cases in FIG. 6 are:

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, assume that the reference time domain unit includes the maximum number of preamble symbols included in 1 ms, for example, in the case of 15 kHz, 30 kHz, and 60 kHz, the maximum number of preamble symbols included in 1 ms is 12, 24, and 48, respectively. Therefore, in the case of 15 kHz, 30 kHz, and 60 kHz, the reference time-domain unit includes 12, 24, and 48 preamble symbols in the time domain, respectively. The reference frequency domain unit includes 20MHz. In the case of 60kHz, the frequency domain resource required to transmit a target preamble sequence is 20MHz, and the time domain resource required to transmit a target preamble sequence is 2 symbols; in the case of 30kHz, a target is transmitted The frequency domain resource required by the preamble sequence is 20MHz, and the time domain resource required to transmit a target preamble sequence is 2 symbols; in the case of 15kHz, the frequency domain resource required to transmit a target preamble sequence is 20MHz, and the transmission of a target preamble sequence requires The time domain resource is 2 symbols, then these three cases include 1, 1, 1 reference frequency domain unit, 1/24, 1/12, 1/6 reference time domain unit, respectively. Assuming that the power offset value is obtained by-(10 * lg (M) + 10 * lg (N)), the power offset values corresponding to the three cases in FIG. 6 are:

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.

As an example and not a limitation, a preamble sequence is sent in a comb-tooth structure within a certain bandwidth (for example, 20 MHz), and a target preamble sequence format includes 2 symbols as an example, as shown in FIG. 7. For example, assume that the reference time domain unit includes the maximum number of preamble symbols included in 1 ms. For example, the reference time domain unit includes 12 preamble symbols in the time domain, and the reference frequency domain unit includes one PRB. In FIG. 7, the frequency domain resources required to transmit a target preamble sequence are 12 PRBs and 6 PRBs respectively, then the two cases in FIG. 7 include 12, 6 reference frequency domain units, 2/12, 2 / 12 reference time domain units, assuming that the power offset value is obtained by-(10 * lg (M) + 10 * lg (N)), the corresponding power offset values for the two cases in Figure 7 are:

-10 * lg (2/12) -10 * lg (12) = 8-11 = -3;

-10 * lg (2/12) -10 * lg (6) = 8-8 = 0.

Optionally, in the embodiment of the present application, the power offset value is determined according to a third parameter, and the third parameter is determined based on the reference subcarrier interval. That is to say, the power offset value corresponding to the target preamble sequence format may be directly determined according to the third parameter, or may be determined according to the deformation of the third parameter.

The reference subcarrier interval is one of the subcarrier intervals. Optionally, the reference subcarrier interval may be regarded as a subcarrier interval whose corresponding power offset value is 0.

Optionally, the reference subcarrier interval may be the subcarrier interval occupying the smallest frequency domain resource among the subcarrier intervals, or may be the subcarrier interval occupying the largest frequency domain resource among the subcarrier intervals, or may also be occupied in the subcarrier interval The subcarrier interval of a specific frequency domain resource is not limited to this embodiment of the present application.

Optionally, the target preamble sequence format corresponds to the target subcarrier interval, the ratio between the target subcarrier interval and the reference subcarrier interval may be a power of 2 μ, and the third parameter may be 3 * μ.

For example, the reference subcarrier interval is 15 kHz, and the target subcarrier interval is 30 kHz, that is, μ = 1. Among them, the reference preamble sequence format corresponds to the reference subcarrier interval, the reference preamble sequence format includes M symbols in the time domain, and the target preamble sequence format also includes M symbols in the time domain, assuming the power offset value corresponding to the reference preamble sequence format Determined according to the parameter m, then the power offset value of the target preamble sequence format is determined according to the parameter m + 3. That is, when the number of reference time domain units included in the time domain is the same, the parameters used to determine the power offset value at different subcarrier intervals may be different.

Optionally, the target preamble sequence format corresponds to the target subcarrier interval, and the ratio between the target subcarrier interval and the reference subcarrier interval may be a power of 2 and the third parameter may be 0.

For example, the reference subcarrier interval is 15 kHz, and the target subcarrier interval is 30 kHz, that is, μ = 1. Among them, the reference preamble sequence format corresponds to the reference subcarrier interval, the reference preamble sequence format includes N PRBs in the frequency domain, and the target preamble sequence format also includes N PRBs in the frequency domain, assuming that the power offset value corresponding to the reference preamble sequence format is based on The parameter n is determined, then the power offset value of the target preamble sequence format is also determined according to the parameter n. That is, when the number of reference frequency domain units included in the frequency domain is the same, the parameters used to determine the power offset value at different subcarrier intervals may be the same. This is mainly because in the unlicensed frequency band, the maximum transmission power of the terminal device in unit bandwidth is limited, that is, the maximum transmission power of the terminal device on each PRB regardless of the subcarrier spacing of 15kHz, or 30kHz, or 60kHz Are the same.

It should be understood that the above-mentioned third parameter is for illustrative purposes only, and the third parameter may also 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 way to obtain the power offset value may be obtained through a lookup table, for example, a mapping table of the preamble sequence format and the power offset value, where the formation of the mapping table may be through the above At least one of the first parameter, the second parameter, and the third parameter is calculated. Or the way to obtain the power offset value may also be obtained by the UE calculating at least one of the first parameter, the second parameter and the third parameter by itself.

Optionally, the PRACH channel is used to transmit the target preamble sequence and the first data, and the method further includes:

S230. Determine the transmission power of the first data according to the transmission power of the target preamble sequence.

It should be understood that in some scenarios, such as a two-step random access process, 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 transmission power of the uplink data (ie, the first data).

Optionally, 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, where the first power offset value is preset, or the first The power offset value is indicated by the system or network device through the indication information.

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

Optionally, the first power offset value is 0.

Optionally, the first power offset value is a negative number. This is mainly because the signal-to-noise ratio generally required for data demodulation is greater than the signal-to-noise ratio required for demodulation of the preamble sequence. Therefore, when determining the transmission power of the target preamble sequence and the first data, the terminal device can It is determined that the transmission power of the first data is greater than the transmission power of the target preamble sequence.

It should be understood that the interaction and related characteristics and functions between the network device and the terminal device described by the network device correspond to the related characteristics and functions of the terminal device. That is, what message the terminal device sends to the network device, and the network device receives the corresponding message from the terminal device. For example, the terminal device sends the target preamble sequence to the network device with the determined transmission 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 size of the sequence numbers of the above processes does not mean that the execution order is sequential, and the execution order of each process should be determined by its function and inherent logic, and should not be implemented in this application. The implementation process of the examples constitutes no limitation.

The method for determining the transmission power of the preamble sequence according to an embodiment of the present application is described in detail above, and the technology for determining the transmission power of the preamble sequence according to the embodiment of the present application and the method described in the method embodiment will be described below with reference to FIGS. 8 and 9. Features apply to the following device embodiments.

FIG. 8 shows a schematic block diagram of a communication device 300 according to an embodiment of the present application. As shown in FIG. 8, the communication device 300 includes:

The processing unit 310 is 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 present application determines the transmit 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 make the corresponding preamble sequences in multiple preamble sequence formats The transmit power is the same.

Optionally, 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.

Optionally, 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, including: the power offset value is based on the first The parameter determines that the first parameter is 10 * lg (N).

Optionally, in the embodiment of the present application, the power offset value includes (-10 * lg (N)).

Optionally, in an embodiment of the present application, the reference frequency domain unit includes one of the following cases: a frequency domain resource included in a reference preamble sequence format, where the reference preamble sequence format is one of the preamble sequence formats The frequency domain resources included in the reference preamble sequence format included in the reference bandwidth; the frequency domain resources included in the target preamble sequence format included in the reference bandwidth; P physical resource blocks PRB; Q MHz bandwidth.

Optionally, in an embodiment of the present application, the reference preamble sequence format is the preamble sequence format that occupies the smallest frequency domain resource in the preamble sequence format, or the reference preamble sequence format is the occupied frequency in the preamble sequence format The preamble sequence format with the largest domain resource.

Optionally, in the 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.

Optionally, in the 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, including: the power offset value is based on the second The parameter determines that the second parameter is 10 * lg (M).

Optionally, in the embodiment of the present application, the power offset value includes (-10 * lg (M)).

Optionally, in the embodiment of the present application, the reference time domain unit includes one of the following cases: a reference preamble sequence format includes time domain resources, where the reference preamble sequence format is one of the preamble sequence formats The time domain resources included in the reference preamble sequence format included in the reference time; the time domain resources included in the target preamble sequence format included in the reference time; Rms; S symbols.

Optionally, in an embodiment of the present application, the reference preamble sequence format is the preamble sequence format that occupies the smallest time domain resource in the preamble sequence format, or the reference preamble sequence format is when the preamble sequence format is occupied The preamble sequence format with the largest domain resource.

Optionally, in the embodiment of the present application, the power offset value is determined according to a third parameter, and the third parameter is determined based on the reference subcarrier interval.

Optionally, in an embodiment of the present application, a ratio of a target subcarrier interval corresponding to the target preamble sequence format to the reference subcarrier interval is a power of 2, and the third parameter is 0 or the third The three parameters are 3 * μ.

Optionally, in the embodiment of the present application, the processing unit 310 is further configured to: determine the transmission power of the first data according to the transmission power of the target preamble sequence, where 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 embodiment of the present application may correspond to the communication device in the method embodiment of the present application, and the above-mentioned and other operations and / or functions of each unit in the communication device 300 are respectively for implementing the communication in the method of FIG. The corresponding process of the device will not be repeated here for the sake of brevity.

As shown in FIG. 9, an 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 execute the content of the communication device corresponding to the method 200 in FIG. . The communication device 400 shown in FIG. 9 includes a processor 410, and the processor 410 can call and run a computer program from the memory to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 9, the communication device 400 may further include a memory 420. The processor 410 can call and run a computer program from the memory 420 to implement the method in the embodiments of the present application.

The memory 420 may be a separate device independent of the processor 410, or may be integrated in the processor 410.

Optionally, 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, specifically, may send information or data to other devices, or receive other Information or data sent by the device.

Among them, the transceiver 430 may include a transmitter and a receiver. The transceiver 430 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 400 may be the communication device of the embodiment of the present application, and the communication device 400 may implement the corresponding process implemented by the communication device in each method of the embodiment of the present application.

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

10 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 500 shown in FIG. 10 includes a processor 510, and the processor 510 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 10, the chip 500 may further include a memory 520. The processor 510 can call and run a computer program from the memory 520 to implement the method in the embodiments of the present application.

The memory 520 may be a separate device independent of the processor 510, or may be integrated in the processor 510.

Optionally, the chip 500 may further include an input interface 530. The processor 510 can control the input interface 530 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

Optionally, the chip 500 may further include an output interface 540. The processor 510 can control the output interface 540 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

Optionally, the chip may be applied to the communication device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the communication device in each method of the embodiment of the present application. For the sake of brevity, no further description is provided here.

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

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has signal processing capabilities. In the implementation process, each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned 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 existing programmable gate array (Field Programmable Gate Array, FPGA), or other available Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, and a register. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronic Erasable programmable read only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to these and any other suitable types of memories.

It should be understood that the foregoing memory is exemplary but not limiting. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data) SDRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memories in the embodiments of the present application are intended to include but are not limited to these and any other suitable types of memories.

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

Optionally, the computer-readable storage medium can be applied to the communication device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal / communication device in each method of the embodiments of the present application, for simplicity And will not be repeated here.

An embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the communication device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal / communication device in each method of the embodiment of the present application. I will not repeat them here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the communication device in the embodiment of the present application. When the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the communication device in each method of the embodiment of the present application. And will not be repeated here.

Those of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and conciseness of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a division of logical functions. In actual implementation, there may be other divisions, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple 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 into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes .

The above is only the specific implementation of this application, but the scope of protection of this application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (31)

A method for determining the transmission power of a preamble sequence is characterized by comprising: Determine the power offset value corresponding to the target preamble sequence format; The transmission power of the target preamble sequence is determined according to the power offset value, where the target preamble sequence corresponds to the target preamble sequence format. The method according to claim 1, wherein the power offset value is determined according to the number N of reference frequency domain units included in the target preamble sequence format. The method according to claim 2, wherein the power offset value is determined according to the number N of reference frequency domain units included in the target preamble sequence format, including: The power offset value is determined according to a first parameter, and the first parameter is 10 * lg (N). The method according to claim 3, wherein the power offset value includes (-10 * lg (N)). The method according to any one of claims 2 to 4, wherein the reference frequency domain unit includes one of the following cases: Frequency domain resources included in the reference preamble sequence format, wherein the reference preamble sequence format is one of the preamble sequence formats; Frequency domain resources included in the reference preamble sequence format included in the reference bandwidth; Frequency domain resources included in the target preamble sequence format included in the reference bandwidth; P physical resource blocks PRB; Q MHz bandwidth. The method according to claim 5, wherein the reference preamble sequence format is a preamble sequence format that occupies the smallest frequency domain resource among the preamble sequence formats, or The reference preamble sequence format is the preamble sequence format occupying the largest frequency domain resource among the preamble sequence formats. The method according to any one of claims 1 to 6, wherein the power offset value is determined according to the number M of reference time domain units included in the target preamble sequence format. The method according to claim 7, wherein the power offset value is determined according to the number M of reference time domain units included in the target preamble sequence format, including: The power offset value is determined according to a second parameter, and the second parameter is 10 * lg (M). The method according to claim 8, wherein the power offset value comprises (-10 * lg (M)). The method according to any one of claims 7 to 9, wherein the reference time domain unit includes one of the following cases: The time domain resource included in the reference preamble sequence format, wherein the reference preamble sequence format is one of the preamble sequence formats; The time domain resource included in the reference preamble sequence format included in the reference time; The time domain resource included in the target preamble sequence format included in the reference time; R ms S symbols. The method according to claim 10, wherein the reference preamble sequence format is a preamble sequence format that occupies the smallest time domain resource among the preamble sequence formats, or The reference preamble sequence format is the preamble sequence format that occupies the largest time domain resource among the preamble sequence formats. The method according to any one of claims 1 to 11, wherein the power offset value is determined according to a third parameter, and the third parameter is determined based on a reference subcarrier interval. The method according to claim 12, wherein the ratio of the target subcarrier interval corresponding to the target preamble sequence format to the reference subcarrier interval is a power of 2, and the third parameter is 0 or The third parameter is 3 * μ. A communication device, characterized in that it includes: The processing unit is used to determine the power offset value corresponding to the target preamble sequence format, and The transmission power of the target preamble sequence is determined according to the power offset value, where the target preamble sequence corresponds to the target preamble sequence format. The communication device according to claim 14, wherein the power offset value is determined according to the number N of reference frequency domain units included in the target preamble sequence format. The communication device according to claim 15, wherein the power offset value is determined according to the number N of reference frequency domain units included in the target preamble sequence format, including: The power offset value is determined according to a first parameter, and the first parameter is 10 * lg (N). The communication device according to claim 16, wherein the power offset value includes (-10 * lg (N)). The communication device according to any one of claims 15 to 17, wherein the reference frequency domain unit includes one of the following cases: Frequency domain resources included in the reference preamble sequence format, wherein the reference preamble sequence format is one of the preamble sequence formats; Frequency domain resources included in the reference preamble sequence format included in the reference bandwidth; Frequency domain resources included in the target preamble sequence format included in the reference bandwidth; P physical resource blocks PRB; Q MHz bandwidth. The communication device according to claim 18, wherein the reference preamble sequence format is a preamble sequence format that occupies the smallest frequency domain resource among the preamble sequence formats, or The reference preamble sequence format is the preamble sequence format occupying the largest frequency domain resource among the preamble sequence formats. The communication device according to any one of claims 14 to 19, wherein the power offset value is determined according to the number M of reference time domain units included in the target preamble sequence format. The communication device according to claim 20, wherein the power offset value is determined according to the number M of reference time domain units included in the target preamble sequence format, including: The power offset value is determined according to a second parameter, and the second parameter is 10 * lg (M). The communication device according to claim 21, wherein the power offset value includes (-10 * lg (M)). The communication device according to any one of claims 20 to 22, wherein the reference time domain unit includes one of the following cases: The time domain resource included in the reference preamble sequence format, wherein the reference preamble sequence format is one of the preamble sequence formats; The time domain resource included in the reference preamble sequence format included in the reference time; The time domain resource included in the target preamble sequence format included in the reference time; R ms S symbols. The communication device according to claim 23, wherein the reference preamble sequence format is a preamble sequence format that occupies the smallest time domain resource among the preamble sequence formats, or The reference preamble sequence format is the preamble sequence format that occupies the largest time domain resource among the preamble sequence formats. The communication device according to any one of claims 14 to 24, wherein the power offset value is determined according to a third parameter, and the third parameter is determined based on a reference subcarrier interval. The communication device according to claim 25, wherein a ratio of the target subcarrier interval corresponding to the target preamble sequence format to the reference subcarrier interval is a power of 2, and the third parameter is 0 or The third parameter is 3 * μ. A communication device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any of claims 1 to 13 One of the methods. A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 13. A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 13. A computer program product, characterized in that it includes computer program instructions that cause a computer to execute the method according to any one of claims 1 to 13. A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1 to 13.

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