CN112425213A

CN112425213A - Method and communication device for determining preamble sequence transmitting power

Info

Publication number: CN112425213A
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: 2021-02-26
Anticipated expiration: 2038-10-22
Also published as: WO2020082215A1; CN112425213B

Abstract

The embodiment of the application discloses a method for determining preamble sequence transmitting power and communication equipment, wherein the method comprises the following steps: determining a power offset value corresponding to a 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 and the communication equipment in the embodiment of the application are beneficial to realizing the same transmitting power of the corresponding leader sequences in various leader sequence formats.

Description

Method and communication device for determining preamble sequence transmitting power

Technical Field

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

Background

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

Disclosure of Invention

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

In a first aspect, a method for determining preamble sequence transmission power is provided, the method comprising: determining a power offset value corresponding to a target preamble sequence format; and determining the transmission 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 its implementation manners.

In particular, the communication device comprises functional modules for performing the method of the first aspect or its implementations 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 each implementation manner thereof.

In a fourth aspect, a chip is provided for implementing the method in the first aspect or its implementation manners.

Specifically, the chip includes: a processor configured to call and run the computer program from the memory, so that the device on which the chip is installed performs the method according to the first aspect or the implementation manner thereof.

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

A sixth aspect provides a computer program product comprising computer program instructions for causing a computer to perform the method of the first aspect or its implementations.

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

By the technical scheme, the transmitting power of the leader sequence in the leader sequence format is determined by determining the power offset value corresponding to the leader sequence format, so that the transmitting powers of the corresponding leader sequences in various leader sequence formats are favorably the same.

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 transmission power according to an embodiment of the present application.

Fig. 3 is a distribution diagram of PRACH resource structures in different cases over the frequency domain.

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 in 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

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global System for Mobile communications (GSM) System, Code Division Multiple Access (CDMA) System, Wideband Code Division Multiple Access (WCDMA) System, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) System, LTE-a System, New Radio (NR) System, Evolution System of NR System, LTE (LTE-a) System on unlicensed spectrum, NR (NR-b) System on unlicensed spectrum, UMTS (UMTS) System on Mobile communications (GSM) System, UMTS (UMTS) System, Wireless Local Area Network (WLAN) System, WiFi (Wireless Local Area network, WiFi) System on Wireless Local Area Network (WLAN) System, General Packet Radio Service (GPRS) System, LTE-a System, NR System, Evolution System on NR System, LTE-b (LTE-a) System on unlicensed spectrum, and Wireless Local Area network (WiFi) System on Wireless Local Area Network (WLAN) System on unlicensed spectrum, Next generation communication systems or other communication systems, etc.

Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technology, mobile Communication systems will support not only conventional Communication, but also, for example, Device-to-Device (D2D) Communication, Machine-to-Machine (M2M) Communication, Machine Type Communication (MTC), and Vehicle-to-Vehicle (V2V) Communication, and the embodiments of the present application can also be applied to these Communication systems.

The frequency spectrum of the application is not limited in the embodiment of the present application. For example, the embodiments of the present application may be applied to a licensed spectrum and may also be applied to an unlicensed spectrum.

Illustratively, a 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, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted 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 Public Land Mobile Network (PLMN) for future evolution, or the like.

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 Equipment" includes, but is not limited to, 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 device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, and the embodiments of the present invention are not limited thereto.

Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.

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

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

Optionally, 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 the embodiments 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 having a communication function, and the network device 110 and the terminal device 120 may be the 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 other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

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

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

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

PREAMBLE _ RECEIVED _ TARGET _ POWER ═ PREAMBLE receivedtargetpower + DELTA _ PREAMBLE + (PREAMBLE _ POWER _ ramp _ COUNTER-1) × PREAMBLE _ POWER _ ramp _ STEP (equation 1).

Wherein, preambleReceivedTargetPower is the target receiving power of the leader sequence configured by the network equipment, and the parameter can be determined by high-level configuration; a calculator of the number of times of POWER rise of PREAMBLE sequence transmission, wherein the parameter can be determined according to the number of times of PREAMBLE sequence transmission; PREAMBLE _ POWER _ RAMPING _ STEP is a POWER-up factor, and the parameter can be determined by high-level configuration; DELTA _ PREAMBLE is a power offset value, i.e. a parameter value, to which embodiments of the present application refer.

P _ PRACH min { P _ CMAX, PREAMBLE _ RECEIVED _ TARGET _ POWER + PL } [ dBm ] (equation 2).

Wherein, the P _ PRACH is the target preamble sequence transmitting power; p _ CMAX is the maximum transmission power configured by the terminal equipment; 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 this embodiment of the present application, power offset values corresponding to different preamble sequence formats may be different, so that power offset values corresponding to different preamble sequence formats need to be determined, so as to determine the transmission power of preamble sequences corresponding to different preamble sequence formats.

Fig. 2 shows a schematic block diagram of a method 200 for determining preamble sequence transmit 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, determining a power offset value corresponding to a target leader 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 transmission 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 a mapping relationship between the target 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 in table 1 may be configured by a higher layer, or may be agreed by a protocol.

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

The explanation is given by taking the size of subcarrier spacing (SCS ) as 15kHz and 106 Physical Resource Blocks (PRB) within 20MHz, where each PRB includes 12 subcarriers.

In case 1, one PRACH resource structure occupies several consecutive PRBs, e.g. 12 consecutive PRBs.

In case 2, one PRACH resource structure occupies several PRBs distributed discretely at equal intervals, e.g., 11 PRBs occupying a comb structure.

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

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

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

Optionally, in this 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 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. Wherein, N can be an integer or a fraction.

The reference frequency domain unit may refer to any 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 preamble sequence formats, and optionally, the reference preamble sequence format may be considered as a preamble sequence format whose corresponding power offset value is 0; frequency domain resources included in the reference preamble sequence format included in the reference bandwidth or frequency domain resources included in a target preamble sequence format included in the reference bandwidth; p PRBs; and Q MHz bandwidth, etc.

Optionally, the reference preamble sequence format may be a preamble sequence format that occupies the minimum frequency domain resource in the preamble sequence format, or may be a preamble sequence format that occupies the maximum frequency domain resource in the preamble sequence format, or may also be a preamble sequence format that occupies a specific frequency domain resource in the preamble sequence format, which 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 each case in fig. 3 will be described in detail. In each of the above cases, the method of determining the power offset value corresponding to the preamble sequence format of case 3 and case 4 can be considered similar to that of case 2, and therefore, the determination of the power offset value in both cases 1 and 2 is mainly considered below.

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

Optionally, the reference frequency domain unit includes frequency domain resources included in a reference preamble sequence format, where 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, 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, 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, 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, and likewise the power offset value can 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 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, and likewise the power offset value can 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).

Optionally, the reference frequency domain unit includes frequency domain resources required for transmitting one PRACH resource structure. For example, the target preamble sequence format in fig. 4 at 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, i.e., the first parameter is 10 × lg (8) ═ 9. For another example, the target preamble sequence format in fig. 4 at 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, the target preamble sequence format in fig. 4 at 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.

Optionally, the reference frequency domain unit includes frequency domain resources required by the PRACH resource structure with the maximum number included in the reference bandwidth. For example, the reference bandwidth is 20MHz, and within 20MHz, for the cases of 15kHz, 30kHz and 60kHz, the corresponding reference frequency domain units respectively include 8, 4 and 2 PRACH resource structures. 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, the target preamble sequence formats in the cases of 15kHz, 30kHz and 60kHz each include 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 cases of 15kHz, 30kHz and 60kHz, the corresponding reference frequency domain units respectively include 8, 4 and 2 PRACH resource structures. Assuming that the target preamble sequence format in the three cases of fig. 4 includes only two PRACH resource structures, respectively, the target preamble sequence format includes a reference frequency domain unit of (2/8) in the case of 15kHz, the first parameter is 10 × lg (2/8) — 6, the target preamble sequence format includes a reference frequency domain unit of (2/4) in the case of 30kHz, the first parameter is 10 × lg (2/4) — 3, and the target preamble sequence format includes a reference frequency domain unit of (2/2) in the case of 60kHz, 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 10MHz, and the frequency domain resources included in the reference preamble sequence format are the frequency domain resources required by the PRACH resource structure with the maximum number included in the reference bandwidth. For example, within 10MHz, the reference preamble sequence format includes 4, 2 and 1 PRACH resource structures for the cases of 15kHz, 30kHz and 60kHz, respectively. The actual transmission bandwidth is 20MHz, for example, as shown in fig. 4, the target preamble sequence format in fig. 4 under the condition of 15kHz includes 8 PRACH resource structures, the target preamble sequence format in fig. 4 under the condition of 30kHz includes 4 PRACH resource structures, and the target preamble sequence format in fig. 4 under the condition of 60kHz includes 2 PRACH resource structures. Then the target preamble sequence format includes the reference frequency domain unit of (8/4) at 15kHz, the first parameter is 10 × lg (8/4) ═ 3, the target preamble sequence format includes the reference frequency domain unit of (4/2) at 30kHz, the first parameter is 10 × lg (4/2) ═ 3, and the target preamble sequence format includes the reference frequency domain unit of (2/1) at 60kHz, the first parameter is 10 × lg (2/1) ═ 3.

Optionally, the reference frequency domain unit comprises a Q MHz bandwidth. For example, assuming that the reference frequency domain unit Q is 2.16MHz (i.e., frequency domain resources occupied by one PRACH resource structure in the case of 15 kHz), if the target preamble sequence format 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, 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, the bandwidth occupied by the target preamble sequence format is 8.64MHz in the case of 30kHz, 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; alternatively, the bandwidth occupied by the target preamble sequence format is 17.28MHz at 60kHz, 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., frequency domain resources 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, 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, the bandwidth occupied by the target preamble sequence format is 8.64MHz in the case of 30kHz, 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; alternatively, the bandwidth occupied by the target preamble sequence format is 17.28MHz at 60kHz, 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, and the like. The examples that the reference frequency domain unit includes the frequency domain resources included in the reference preamble sequence format or includes the frequency domain resources required for transmitting one PRACH resource structure are as described above, and are not described herein again 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 being 15kHz, or 30kHz, or 60kHz, optionally, the reference frequency domain unit includes P PRBs. For example, assume that P is 1 PRB, and the target preamble sequence format in the case of 15kHz in fig. 5 includes 11 PRB, the target preamble sequence format in the case of 30kHz in fig. 5 includes 13 PRB, and the target preamble sequence format in the case of 60kHz in fig. 5 includes 12 PRB, then, in the case of 15kHz, the target preamble sequence format 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, assume 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, in the case of 15kHz, the target preamble sequence format 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 elements, and the first parameter is 10 × lg (5/10) — 3.

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

Alternatively, the first parameter may be directly used to determine DELTA _ PREAMBLE in equation 1, for example, by replacing DELTA _ PREAMBLE in equation 1 with 10 × lg (n), or may be modified to determine DELTA _ PREAMBLE in equation 1, for example, by replacing DELTA _ PREAMBLE in equation 1 with-10 × lg (n).

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

Optionally, in this 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 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 can be an integer or a fraction.

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

Optionally, the reference preamble sequence format may be a preamble sequence format that occupies a minimum time domain resource in the preamble sequence format, or may be a preamble sequence format that occupies a maximum time domain resource in the preamble sequence format, or may also be a preamble sequence format that occupies a specific time domain resource in the preamble sequence format, which is not limited to this embodiment of the present application.

Optionally, the power offset value may be determined according to a second parameter, which may be 10 x lg (m). The way in which this second parameter is calculated will be described below in connection with several specific embodiments.

Optionally, the reference time domain unit includes time domain resources included in a 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, the target preamble sequence format includes (D/C) reference time domain units, and the power offset value may be determined according to a second parameter, which may be 10 × lg (D/C). For another example, if the reference preamble sequence format includes C microseconds of time resources in the time domain and the target preamble sequence format includes D microseconds of time resources in the time domain, the target preamble sequence format includes (D/C) reference time domain units, and the power offset value may be determined according to a second parameter, which may be 10 × lg (D/C).

Optionally, the reference time domain unit includes time domain resources required by the PRACH resource structure with the maximum number included in the reference time. For example, the reference time is 1ms, and within 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, 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 within 1ms, a reference time-domain unit includes 12 preamble sequence symbols in the case of 15kHz, the target preamble sequence format corresponds to 15kHz, and when the target preamble sequence format includes 6 preamble sequence symbols in the time domain, the second parameter is 10 × 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 within 1ms, the reference time-domain unit in the case of 15kHz includes 12 preamble sequence symbols, and correspondingly, the reference time-domain unit in the case of 30kHz includes 24 preamble sequence symbols, the target preamble sequence format corresponds to 30kHz, and when the target preamble sequence format includes 6 preamble sequence symbols in the time domain, the second parameter is 10 × lg (6/24) — 6; 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, this will not be illustrated too much here for the sake of brevity.

It should be understood that the second parameter is only used for illustrative purposes, 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.

Alternatively, the second parameter may be directly used to determine DELTA _ PREAMBLE in equation 1, for example, by replacing DELTA _ PREAMBLE in equation 1 with 10 × lg (m), or may be modified to determine DELTA _ PREAMBLE in equation 1, for example, by replacing DELTA _ PREAMBLE in equation 1 with-10 × lg (m).

Alternatively, the power offset value may be determined based on both the first parameter and the second parameter, and the calculation of the power offset value related to both the first parameter and the second parameter will be described with reference to the embodiment.

By way of example and not limitation, the preamble sequence is transmitted in a frequency domain repeating manner within a certain bandwidth (e.g., 20MHz), as shown in fig. 6. It is assumed that the reference time domain unit includes the maximum number of preamble sequence symbols included within 1ms, for example, in the case of 15kHz, 30kHz, 60kHz, the maximum number of preamble sequence symbols included within 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 in the time domain, respectively. Assume that the reference frequency domain unit includes Q MHz bandwidth, where Q is 2.16MHz (i.e., the frequency domain resource occupied by one PRACH resource structure under 15 kHz). In fig. 6, in the case of 60kHz, 2 PRACH resource structures of 60kHz are included in the frequency domain, the frequency domain resources occupied by the 2 PRACH resource structures of 60kHz are equivalent to the frequency domain resources occupied by 8 PRACH resource structures of 15kHz, and the time domain includes 2 preamble sequence symbols, that is, 8 reference frequency domain elements (N ═ 8) and 2/48 reference time domain elements (M ═ 2/48) in this case. In the case of 30kHz, 4 PRACH resource structures of 30kHz are included in the frequency domain, the frequency domain resources occupied by the 4 PRACH resource structures of 30kHz are equivalent to the frequency domain resources occupied by 8 PRACH resource structures of 15kHz, and the time domain includes 2 preamble sequence symbols, that is, 8 reference frequency domain units (N is 8) and 2/24 reference time domain units (M is 2/24) in this case. 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, i.e., 8 reference frequency domain elements (N ═ 8) and 2/12 reference time domain elements (M ═ 2/12) are included in this case. 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, assume 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, under the condition of 60kHz, the frequency domain resources required for transmitting one target preamble sequence include 2 reference frequency domain units, and the time domain resources required for transmitting one target preamble sequence include 2 reference time domain units; under the condition of 30kHz, the frequency domain resource required by transmitting a target preamble sequence comprises 4 reference frequency domain units, and the time domain resource required by transmitting a target preamble sequence comprises 2 reference time domain units; under the condition of 15kHz, the frequency domain resources required for transmitting one target preamble sequence include 8 reference frequency domain units, and the time domain resources required for transmitting one target preamble sequence include 2 reference time domain units, that is, the three conditions respectively include 2,4, 8 reference frequency domain units, and 2, 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, it is assumed that the reference time domain unit includes the maximum number of preamble sequence symbols included within 1ms, for example, in the case of 15kHz, 30kHz, and 60kHz, the maximum number of preamble sequence symbols included within 1ms is 12, 24, and 48, respectively, and thus in the case of 15kHz, 30kHz, and 60kHz, the reference time domain unit includes 12, 24, and 48 preamble sequence symbols in the time domain, respectively. The reference frequency domain unit comprises 20MHz, under the condition of 60kHz, the frequency domain resource required for transmitting a target preamble sequence is 20MHz, and the time domain resource required for transmitting the target preamble sequence is 2 symbols; under the condition of 30kHz, the frequency domain resource required for transmitting a target preamble sequence is 20MHz, and the time domain resource required for transmitting a target preamble sequence is 2 symbols; under the condition 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 these three cases respectively include 1, 1 reference frequency domain unit, 1/24, 1/12, 1/6 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(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, the preamble sequence is transmitted in a comb structure within a certain bandwidth (e.g., 20MHz), and a target preamble sequence format includes 2 symbols, as shown in fig. 7. For example, assume 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 assume that the reference frequency domain unit includes one PRB. In fig. 7, the frequency domain resources required for transmitting one target preamble sequence are 12 PRBs and 6 PRBs, respectively, then two cases in fig. 7 include 12 and 6 reference frequency domain units, 2/12 and 2/12 reference time domain units, respectively, and assuming that the power offset value is obtained by- (10 × lg (m) +10 × lg (n)), the power offset values 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。

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

Wherein the reference subcarrier spacing is one of the subcarrier spacings. Alternatively, the reference subcarrier spacing may be regarded as a subcarrier spacing whose corresponding power offset value is 0.

Optionally, the reference subcarrier spacing may be a subcarrier spacing occupying minimum frequency domain resources in the subcarrier spacing, or may be a subcarrier spacing occupying maximum frequency domain resources in the subcarrier spacing, or may also be a subcarrier spacing occupying specific frequency domain resources in the subcarrier spacing, which is not limited in this embodiment of the application.

Optionally, the target preamble sequence format corresponds to a target subcarrier spacing, a ratio between the target subcarrier spacing and the reference subcarrier spacing may be a 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 if the power offset value corresponding to the reference preamble sequence format is determined according to the parameter M. That is, in the case that the number of reference time domain units included in the time domain is the same, the parameters for determining the power offset value may be different in different subcarrier intervals.

Optionally, the target preamble sequence format corresponds to a target subcarrier spacing, a ratio between the target subcarrier spacing and the reference subcarrier spacing may be μ power of 2, 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 frequency domain also includes N PRBs, and the power offset value corresponding to the reference preamble sequence format is determined according to the parameter N if the power offset value corresponding to the reference preamble sequence format is determined according to the parameter N. That is, in the case that the number of reference frequency domain units included in the frequency domain is the same, the parameters for determining the power offset value may be the same at different subcarrier intervals. This is mainly because 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 being 15kHz, or 30kHz, or 60 kHz.

It should be understood that the third parameter is only used for illustration, and the third parameter may also be other calculation formulas related to μ, which is not limited in the 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 a preamble sequence format and a 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.

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

s230, determining 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, for example, in a two-step random access procedure, the terminal device needs to transmit uplink data on the PRACH channel in addition to the preamble sequence, so as 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 (i.e., the first data).

Optionally, a 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 power offset value is indicated by the system or the network device through indication information.

Optionally, the indication information may be at least one of physical layer signaling, Radio Resource Control (RRC) signaling, and Medium Access Control (MAC) signaling.

Optionally, the first power offset value is 0.

Optionally, the first power offset value is negative. This is mainly because the signal-to-noise ratio required for data demodulation is generally greater than the signal-to-noise ratio required for preamble sequence demodulation, and therefore, when determining the target preamble sequence and the transmission power of the first data, the terminal device may determine 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 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 message the terminal device sends to the network device, the network device receives the corresponding message from the terminal device. For example, the terminal device transmits the 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 the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The method for determining the preamble sequence transmission power according to the embodiment of the present application is described above in detail, and the apparatus for determining the preamble sequence transmission power according to the embodiment of the present application is described below with reference to fig. 8 and 9, and the technical features described in the embodiment of the method are applicable to the following apparatus embodiments.

Fig. 8 shows a schematic block diagram of a communication device 300 of an embodiment of the application. As shown in fig. 8, the communication device 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 a 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 transmission 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 transmission powers of the preamble sequences corresponding to multiple preamble sequence formats the same.

Optionally, 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.

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

Optionally, in an embodiment of the present application, the power offset value comprises (-10 × lg (n)).

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

Optionally, in this embodiment of the present application, the reference preamble sequence format is a preamble sequence format that occupies the minimum frequency domain resource in the preamble sequence formats, or the reference preamble sequence format is a preamble sequence format that occupies the maximum frequency domain resource in the preamble sequence formats.

Optionally, 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.

Optionally, in this embodiment of the present application, the determining the power offset value according to the number M of reference time domain units included in the target preamble sequence format includes: the power offset value is determined according to a second parameter, which is 10 × lg (m).

Optionally, in an embodiment of the present application, the power offset value comprises (-10 × lg (m)).

Optionally, in an embodiment of the present application, the reference time domain unit includes one of the following cases: the reference preamble sequence format comprises time domain resources, wherein the reference preamble sequence format is one of preamble sequence formats; a time domain resource included in the reference preamble sequence format included in a reference time; time domain resources included in the target preamble sequence format included in a reference time; r ms; and S symbols.

Optionally, in this embodiment of the present application, the reference preamble sequence format is a preamble sequence format that occupies a minimum time domain resource in the preamble sequence formats, or the reference preamble sequence format is a preamble sequence format that occupies a maximum time domain resource in the preamble sequence formats.

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

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

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

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

As shown in fig. 9, an embodiment of the present application further provides a communication device 400, where the communication device 400 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. 2. The communication device 400 shown in fig. 9 includes a processor 410, and the processor 410 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 9, the communication device 400 may also include a memory 420. From the memory 420, the processor 410 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 420 may be a separate device from the processor 410, or may be integrated into 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, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

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

Optionally, the communication device 400 may be a communication device in the embodiment of the present application, and the communication device 400 may implement a corresponding process implemented by the communication device in each method in the embodiment of the present application, which is not described herein again for brevity.

In a particular 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 method in the embodiment of the present application.

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

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

Optionally, the chip 500 may further comprise 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 transmitted by other devices or chips.

Optionally, the chip 500 may further include an output interface 540. The processor 510 may control the output interface 540 to communicate with other devices or chips, and may particularly output information or data to the 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 a corresponding process implemented by the communication device in each method in the embodiment of the present application, and for brevity, details are not described here again.

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

It should be understood that the processor of the embodiments 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 performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed 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 the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. 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 (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus 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 memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the communication device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/communication device in the methods in the embodiment of the present application, which is not described herein again for brevity.

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

Optionally, the computer program product may be applied to the communication device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/communication device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the communication device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the communication device in each method in the embodiment of the present application, and for brevity, details are not described here again.

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 implementation. 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 is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments 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.

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 or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the 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 conceive of the changes or substitutions within the technical scope of the present application, and shall 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

A method for determining preamble sequence transmit power, comprising:

determining a power offset value corresponding to a 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 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.
The method of 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, and comprises:

the power offset value is determined according to a first parameter, which is 10 x lg (n).
The method of claim 3, wherein the power offset value comprises (-10 x lg (N)).
The method according to any of claims 2 to 4, wherein the reference frequency domain unit comprises one of:

the frequency domain resources included in the reference 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 a reference bandwidth;

a frequency domain resource included in the target preamble sequence format included in a reference bandwidth;

p physical resource blocks PRB;

the Q MHz bandwidth.
The method according to claim 5, wherein the reference preamble sequence format is the preamble sequence format occupying the smallest frequency domain resource, or

The reference preamble sequence format is a preamble sequence format occupying the largest frequency domain resource in the preamble sequence formats.
The method according to any 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 of 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, and comprises:

the power offset value is determined according to a second parameter, which is 10 × lg (m).
The method of claim 8, wherein the power offset value comprises (-10 x lg (m)).
The method according to any of claims 7 to 9, wherein the reference time domain unit comprises one of:

the reference preamble sequence format comprises time domain resources, wherein the reference preamble sequence format is one of preamble sequence formats;

a time domain resource included in the reference preamble sequence format included in a reference time;

time domain resources included in the target preamble sequence format included in a reference time;

R ms；

and S symbols.
The method of claim 10, wherein the reference preamble sequence format is a preamble sequence format occupying minimum time domain resources among the preamble sequence formats, or

The reference preamble sequence format is a preamble sequence format occupying maximum time domain resources in the preamble sequence formats.
The method according to any of claims 1 to 11, wherein the power offset value is determined according to a third parameter, the third parameter being determined based on a reference subcarrier spacing.
The method according to claim 12, wherein a ratio of a target subcarrier spacing corresponding to the target preamble sequence format to the reference subcarrier spacing is 2 to the power of μ, and the third parameter is 0 or the third parameter is 3 x μ.
A communication device, comprising:

a processing unit for determining a power offset value corresponding to a target preamble sequence format, an

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 communications device of claim 14, wherein the power offset value is determined according to a number N of reference frequency domain elements included in the target preamble sequence format.
The communications device of 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, and comprises:

the power offset value is determined according to a first parameter, which is 10 x lg (n).
The communications device of claim 16, wherein the power offset value comprises (-10 x lg (n)).
The communication device according to any of claims 15 to 17, wherein the reference frequency domain unit comprises one of:

the frequency domain resources included in the reference 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 a reference bandwidth;

a frequency domain resource included in the target preamble sequence format included in a reference bandwidth;

p physical resource blocks PRB;

the Q MHz bandwidth.
The communication device according to claim 18, wherein the reference preamble sequence format is a preamble sequence format occupying minimum frequency domain resources among the preamble sequence formats, or

The reference preamble sequence format is a preamble sequence format occupying the largest frequency domain resource in the preamble sequence formats.
The communications device of 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 communications device of 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, and comprises:

the power offset value is determined according to a second parameter, which is 10 × lg (m).
The communications device of claim 21, wherein the power offset value comprises (-10 x lg (m)).
The communication device of any of claims 20 to 22, wherein the reference time domain unit comprises one of:

the reference preamble sequence format comprises time domain resources, wherein the reference preamble sequence format is one of preamble sequence formats;

a time domain resource included in the reference preamble sequence format included in a reference time;

time domain resources included in the target preamble sequence format included in a reference time;

R ms；

and S symbols.
The communication device according to claim 23, wherein the reference preamble sequence format is a preamble sequence format occupying minimum time domain resources among the preamble sequence formats, or

The reference preamble sequence format is a preamble sequence format occupying maximum time domain resources in the preamble sequence formats.
The communications device of any of claims 14 to 24, wherein the power offset value is determined according to a third parameter, the third parameter being determined based on a reference subcarrier spacing.
The communications device of claim 25, wherein a ratio of a target subcarrier spacing corresponding to the target preamble sequence format to the reference subcarrier spacing is 2 to the power of μ, and wherein the third parameter is 0 or the third parameter is 3 × μ.
A communication device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 13.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 13.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 13.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 13.
A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 1-13.