CN110972250A

CN110972250A - Power control method and device

Info

Publication number: CN110972250A
Application number: CN201811142759.8A
Authority: CN
Inventors: 谢信乾; 郭志恒; 费永强; 毕文平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2020-04-07
Anticipated expiration: 2038-09-28
Also published as: CN110972250B

Abstract

The embodiment of the application discloses a power control method and device, and relates to the technical field of communication. The success rate of sending the random leader sequence can be improved, and the times of sending the random leader sequence by the terminal equipment can be reduced. The method can comprise the following steps: the terminal equipment determines a first resource, wherein the first resource is a random access resource of a random leader sequence to be sent; the terminal equipment determines the power for sending the random preamble sequence according to the position information of the first resource, wherein the position information comprises at least one of time domain position information and frequency domain position information; and the terminal equipment adopts the determined power to send the random preamble sequence to the network equipment on the first resource.

Description

Power control method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a power control method and apparatus.

Background

In a wireless communication system, a network device configures the same random access resources, such as a physical-layer random access channel (PRACH), for all terminal devices in a cell, and when there is an uplink communication requirement, the terminal device may select one resource from the random access resources to send a random preamble sequence to the network device. Before sending the random preamble sequence, the terminal device needs to determine the power for sending the random preamble sequence.

Generally, a terminal device determines initial power for sending a random preamble sequence according to a cell-level parameter configured by a base station, and sends the random preamble sequence to a network device by using the initial power. If the terminal device does not receive the feedback information sent by the network device within the preset time, the random preamble sequence is considered to be failed to be sent, the power for sending the random preamble sequence is increased, and the random preamble sequence is sent to the network device again. For example, each time the terminal device determines that the random preamble sequence transmission fails, the power of the random preamble sequence transmission is increased by a predetermined step size, and the random preamble sequence is transmitted to the network device again until the feedback information of the network device is successfully received or the power of the random preamble sequence transmission reaches the maximum transmission power of the terminal device. How to reduce the number of times that the terminal device transmits the random preamble sequence is a problem to be solved in wireless communication.

Disclosure of Invention

The embodiment of the application provides a power control method and device, which can improve the success rate of sending random leader sequences and reduce the times of sending the random leader sequences by terminal equipment.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, the present application provides a power control method and apparatus.

In one possible design, the method may include: the terminal equipment determines a first resource, wherein the first resource is a random access resource of a random leader sequence to be sent; the terminal equipment determines the power for sending the random preamble sequence according to the position information of the first resource, wherein the position information comprises at least one of time domain position information and frequency domain position information; and the terminal equipment adopts the determined power to send the random preamble sequence to the network equipment on the first resource. In the method, the terminal equipment determines the power for sending the random leader sequence according to the position information of the random access resource for sending the random leader sequence, so that the negative influence of interference on the network equipment for receiving the random leader sequence can be eliminated to a certain extent, the success probability of sending the random leader sequence can be improved, and the times for sending the random leader sequence by the terminal equipment are reduced.

In a possible design, a first value of power used by a terminal device to send a random preamble sequence on a first random access resource is greater than a second value of power used to send a random preamble sequence on a second random access resource, where a distance between a time domain position of the first random access resource and a first position is less than a distance between a time domain position of the second random access resource and the first position, the first position is a transition position from a downlink transmission resource to an uplink transmission resource, and the first random access resource and the second random access resource are in a same downlink resource to uplink resource transition period. In the method, the power used for transmitting the random preamble sequence by the random access resource closer to the first position is larger.

In one possible design, a third value of power used by the terminal device to transmit the random preamble sequence on the third random access resource is different from a fourth value of power used by the terminal device to transmit the random preamble sequence on the fourth random access resource, where time domain positions of the third random access resource and the fourth random access resource are the same, and frequency domain positions of the third random access resource and the fourth random access resource belong to different frequency domain sets.

In one possible design, the determining, by the terminal device, the power for transmitting the random preamble sequence according to the location information of the first resource includes: the terminal equipment determines the random access preamble target receiving power according to the position information of the first resource; and the terminal equipment determines the power for sending the random preamble sequence according to the random access preamble target receiving power, wherein the power is the smaller of the sum of the random access preamble target receiving power and the path loss determined by the terminal equipment and the maximum sending power of the terminal equipment.

In a possible design, a first value of random access preamble target receiving power corresponding to a first random access resource by a terminal device is greater than a second value of random access preamble target receiving power corresponding to a second random access resource, wherein a distance between a time domain position of the first random access resource and a first position is less than a distance between a time domain position of the second random access resource and the first position, the first position is a conversion position from a downlink transmission resource to an uplink transmission resource, and the first random access resource and the second random access resource are in a same downlink resource to uplink resource conversion period.

In one possible design, the determining, by the terminal device, the random access preamble target reception power according to the location information of the first resource includes: if the time domain position information of the first resource is less than or equal to a first threshold, the random access preamble target receiving power is a first value; if the time domain position information of the first resource is larger than the first threshold, the random access preamble target receiving power is a second value; wherein the first value is greater than the second value.

In one possible design, the determining, by the terminal device, the power for transmitting the random preamble sequence according to the location information of the first resource includes: the terminal equipment determines a first power parameter according to the position information of the first resource, wherein the first power parameter is one of the receiving initial power of a random preamble target, a power deviation value related to a random preamble format or a power climbing value related to the sending times of the random preamble; the terminal equipment determines the random access preamble target receiving power according to the first power parameter; and the terminal equipment determines the power for sending the random preamble sequence according to the random access preamble target receiving power, wherein the power is the smaller of the sum of the random access preamble target receiving power and the path loss determined by the terminal equipment and the maximum sending power of the terminal equipment.

In one possible design, a first value of a first power parameter corresponding to a first random access resource of the terminal device is greater than a second value of the first power parameter corresponding to a second random access resource; the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position, the first position is a conversion position from downlink transmission resources to uplink transmission resources, and the first random access resource and the second random access resource are in the same conversion period from the downlink resources to the uplink resources.

In one possible design, the determining, by the terminal device, the first power parameter according to the location information of the first resource includes: if the time domain position information of the first resource is less than or equal to a first threshold, the first power parameter is a first value; if the time domain position information of the first resource is larger than the first threshold, the first power parameter is a second value; wherein the first value is greater than the second value.

In one possible design, the determining, by the terminal device, the power for transmitting the random preamble sequence according to the location information of the first resource includes: the terminal equipment determines a first power offset parameter according to the position information of the first resource; and the terminal equipment determines the power for sending the random preamble sequence according to the first power offset parameter, wherein the power is the smaller of the sum of the first power offset parameter and the second power parameter and the maximum sending power of the terminal equipment, and the second power parameter comprises the target receiving power of the random access preamble and the path loss determined by the terminal equipment.

In one possible design, a first value of a first power offset parameter corresponding to a first random access resource by the terminal device is greater than a second value of the first power offset parameter corresponding to a second random access resource; the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position, the first position is a conversion position from downlink transmission resources to uplink transmission resources, and the first random access resource and the second random access resource are in the same conversion period from the downlink resources to the uplink resources.

In one possible design, the determining, by the terminal device, the first power offset parameter according to the location information of the first resource includes: if the time domain position information of the first resource is less than or equal to a first threshold, the first power offset parameter is a first value; if the time domain position information of the first resource is larger than the first threshold, the first power offset parameter is a second value; wherein the first value is greater than the second value.

In one possible design, the determining, by the terminal device, the power for transmitting the random preamble sequence according to the location information of the first resource includes: the terminal equipment determines a second power offset parameter according to the position information of the first resource; the terminal equipment determines the random access preamble target receiving power according to the second power offset parameter, wherein the random access preamble target receiving power is the sum of the second power offset parameter and a third power parameter, and the third power parameter comprises the random preamble target receiving initial power, a power offset value related to a random preamble format and a power ascending value related to the random preamble sending times; and the terminal equipment determines the power for sending the random preamble sequence according to the random access preamble target receiving power.

In one possible design, a first value of a second power offset parameter corresponding to the first random access resource by the terminal device is greater than a second value of the second power offset parameter corresponding to the second random access resource; the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position, the first position is a conversion position from downlink transmission resources to uplink transmission resources, and the first random access resource and the second random access resource are in the same conversion period from the downlink resources to the uplink resources.

In one possible design, the determining, by the terminal device, the second power offset parameter according to the location information of the first resource includes: if the time domain position information of the first resource is less than or equal to the first threshold, the second power offset parameter is a first value; if the time domain position information of the first resource is larger than the first threshold, the second power offset parameter is a second value; wherein the first value is greater than the second value.

In one possible design, the determining, by the terminal device, the power for transmitting the random preamble sequence according to the location information of the first resource includes: the terminal equipment determines a third power offset parameter according to the position information of the first resource; the terminal equipment determines a fourth power parameter according to the third power offset parameter, wherein the fourth power parameter is one of the receiving initial power of the random preamble target, a power offset value related to a random preamble format or a power ramp value related to the number of times of sending the random preamble; and the terminal equipment determines the receiving power of the random access preamble target according to the fourth power parameter, and determines the power for sending the random preamble sequence according to the receiving power of the random access preamble target.

In one possible design, a first value of a third power offset parameter corresponding to the first random access resource is greater than a second value of the third power offset parameter corresponding to the second random access resource; the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position, the first position is a conversion position from downlink transmission resources to uplink transmission resources, and the first random access resource and the second random access resource are in the same conversion period from the downlink resources to the uplink resources.

In one possible design, the determining, by the terminal device, the third power offset parameter according to the location information of the first resource includes: if the time domain position information of the first resource is less than or equal to the first threshold, the third power offset parameter is a first value; if the time domain position information of the first resource is larger than the first threshold, the third power offset parameter is a second value; wherein the first value is greater than the second value.

In one possible design, the time domain location information includes: the time deviation information of the time domain time period of the random access resource relative to the reference time point, or the uplink time unit number of the time unit corresponding to the random access resource in a downlink resource-uplink resource conversion period, or the resource number of the random access resource in a downlink resource-uplink resource conversion period.

In one possible design, the frequency domain location information includes: the position information of the frequency domain resource unit occupied by the random access resource, or the resource number of the random access resource in the frequency domain.

In one possible design, the terminal device receives a power offset parameter sent by the network device.

Correspondingly, the present application also provides a power control apparatus, which can implement the power control method described in the first aspect. For example, the apparatus may be a terminal device or a chip applied in the terminal device, and may also be other apparatuses capable of implementing the power control method, where the method may be implemented by software, hardware, or by executing corresponding software through hardware.

In one possible design, the apparatus may include a processor and a memory. The processor is configured to enable the apparatus to perform the corresponding functions in the method of the first aspect. The memory is for coupling to the processor and holds the necessary program instructions and data for the device. In addition, the device can also comprise a communication interface for supporting the communication between the device and other devices. The communication interface may be a transceiver or a transceiver circuit.

In one possible design, the apparatus may include: the device comprises a processing module and a sending module. The processing module is configured to determine a first resource, where the first resource is a random access resource of a random preamble sequence to be sent. The first resource is used for transmitting a random preamble sequence, and the first resource is used for transmitting a random preamble sequence, wherein the random preamble sequence comprises a first resource and a second resource; the sending module is configured to send the random preamble sequence to the network device on the first resource using the power.

In a possible design, a first value of power used by the terminal device to send the random preamble sequence on the first random access resource is greater than a second value of power used to send the random preamble sequence on the second random access resource, where a distance between a time domain position of the first random access resource and a first position is less than a distance between a time domain position of the second random access resource and the first position, the first position is a transition position from the downlink transmission resource to the uplink transmission resource, and the first random access resource and the second random access resource are in a same downlink resource to uplink resource transition period.

In one possible design, the processing module is specifically configured to: determining the receiving power of a random access preamble target according to the position information of the first resource; or determining a first power parameter according to the position information of the first resource, wherein the first power parameter is one of a random preamble target receiving initial power, a power deviation value related to a random preamble format or a power climbing value related to the number of times of sending the random preamble; determining the target receiving power of the random access preamble according to a first power parameter; and the processing module is further used for determining the power for sending the random preamble sequence according to the random access preamble target receiving power, wherein the power is the smaller of the sum of the random access preamble target receiving power and the path loss determined by the terminal equipment and the maximum sending power of the terminal equipment.

In one possible design, the processing module is specifically configured to: determining a first power offset parameter according to the position information of the first resource; and determining the power for transmitting the random preamble sequence according to the first power offset parameter, wherein the power is the smaller of the sum of the first power offset parameter and the second power parameter and the maximum transmission power of the terminal equipment, and the second power parameter comprises the target receiving power of the random access preamble and the path loss determined by the terminal equipment.

In one possible design, the processing module is specifically configured to: determining a second power offset parameter according to the position information of the first resource; determining the receiving power of a random access preamble target according to the second power offset parameter, wherein the receiving power of the random access preamble target is the sum of the second power offset parameter and a third power parameter, and the third power parameter comprises the receiving initial power of the random preamble target, a power offset value related to a random preamble format and a power ramp value related to the number of times of sending the random preamble; and determining the power for sending the random preamble sequence according to the target receiving power of the random access preamble.

In one possible design, the processing module is specifically configured to: determining a third power offset parameter according to the position information of the first resource; determining a fourth power parameter according to the third power offset parameter, wherein the fourth power parameter is one of a random preamble target receiving initial power, a power offset value related to a random preamble format or a power ramp value related to the number of times of sending the random preamble; and determining the receiving power of the random access preamble target according to the fourth power parameter, and determining the power for sending the random preamble sequence according to the receiving power of the random access preamble target.

In one possible design, a first value of target receiving power of random access preamble corresponding to a first random access resource by the terminal device is greater than a second value of target receiving power of random access preamble corresponding to a second random access resource; or the first value of the first power parameter corresponding to the first random access resource of the terminal equipment is larger than the second value of the first power parameter corresponding to the second random access resource; or the first value of the first power offset parameter corresponding to the first random access resource by the terminal equipment is larger than the second value of the first power offset parameter corresponding to the second random access resource; or the first value of the second power offset parameter corresponding to the first random access resource by the terminal equipment is larger than the second value of the second power offset parameter corresponding to the second random access resource; or the first value of the third power offset parameter corresponding to the first random access resource by the terminal equipment is larger than the second value of the third power offset parameter corresponding to the second random access resource; the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position, the first position is a conversion position from downlink transmission resources to uplink transmission resources, and the first random access resource and the second random access resource are in the same conversion period from the downlink resources to the uplink resources.

In a second aspect, the present application provides a power control method and apparatus.

In one possible design, the method may include: the network equipment determines a power offset parameter; the power deviation parameter is used for determining one of power for sending a random leader sequence, random access leader target receiving power, random leader target receiving initial power, a power deviation value related to a random leader format or a power climbing value related to the number of times of sending the random leader; the power for sending the random leader sequence comprises random access leader target receiving power and path loss determined by the terminal equipment, and the random access leader target receiving power comprises random leader target receiving initial power, a power deviation value related to a random leader format and a power ascending value related to the sending random leader times; the power offset parameter is related to position information of random access resources for sending the random leader sequence, and the position information comprises at least one of time domain position information and frequency domain position information; the network device sends the power offset parameter to the terminal device. In the method, the power offset parameter of the sending power determined by the terminal equipment can be configured by the network equipment, the power offset parameter is related to the position information of the random access resource sending the random leader sequence, the negative influence of interference on the network equipment receiving the random leader sequence can be eliminated to a certain extent, the success probability of sending the random leader sequence can be improved, and the times of sending the random leader sequence by the terminal equipment are reduced.

In a possible design, a first value of a power offset parameter corresponding to a first time domain position is greater than a second value of the power offset parameter corresponding to a second time domain position, where a distance between the first time domain position and the first position is less than a distance between the second time domain position and the first position, and the first position is a conversion position from a downlink transmission resource to an uplink transmission resource.

In one possible design, the power offset parameters for different frequency domain locations are different.

Correspondingly, the application also provides a power control device, and the device can realize the power control method of the second aspect. For example, the apparatus may be a network device, and may also be other apparatuses capable of implementing the above power control method, and the method may be implemented by software, hardware, or by hardware executing corresponding software.

In one possible design, the apparatus may include a processor and a memory. The processor is configured to enable the apparatus to perform the corresponding functions of the method of the second aspect. The memory is for coupling to the processor and holds the necessary program instructions and data for the device. In addition, the device can also comprise a communication interface for supporting the communication between the device and other devices. The communication interface may be a transceiver or a transceiver circuit.

In one possible design, the apparatus may include: the device comprises a processing module and a sending module. The processing module is used for determining a power offset parameter; the power deviation parameter is used for determining one of power for sending a random leader sequence, random access leader target receiving power, random leader target receiving initial power, a power deviation value related to a random leader format or a power climbing value related to the number of times of sending the random leader; the power for sending the random leader sequence comprises random access leader target receiving power and path loss determined by the terminal equipment, and the random access leader target receiving power comprises random leader target receiving initial power, a power deviation value related to a random leader format and a power ascending value related to the sending random leader times; the power offset parameter is related to position information of random access resources for sending the random leader sequence, and the position information comprises at least one of time domain position information and frequency domain position information; and the sending module is used for sending the power offset parameter to the terminal equipment.

The present application also provides a computer-readable storage medium having stored therein instructions, which when run on a computer, cause the computer to perform the method of any of the above aspects.

The present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the above aspects.

The present application further provides a chip system, which includes a processor and a memory, and is configured to implement the method according to any one of the above aspects.

The present application provides a communication system, comprising the above-mentioned apparatus for implementing the power control method according to the first aspect, and the above-mentioned apparatus for implementing the power control method according to the second aspect.

Any one of the above-provided apparatuses, computer storage media, computer program products, chip systems, or communication systems is configured to execute the above-provided corresponding methods, and therefore, the beneficial effects that can be achieved by the apparatuses, the computer storage media, the computer program products, the chip systems, or the communication systems can refer to the beneficial effects of the corresponding schemes in the above-provided corresponding methods, and are not described herein again.

Drawings

Fig. 1 is a first schematic diagram of a system architecture to which the technical solution provided by the embodiment of the present application is applied;

fig. 2 is a second schematic diagram of a system architecture to which the technical solution provided by the embodiment of the present application is applied;

fig. 3 is a third schematic diagram of a system architecture to which the technical solution provided by the embodiment of the present application is applied;

fig. 4 is a schematic diagram of a frame structure configuration to which the technical solution provided by the embodiment of the present application is applied;

fig. 5 is a scenario to which the technical solution provided in the embodiment of the present application is applied;

fig. 6 is a scenario to which the technical solution provided in the embodiment of the present application is applied;

fig. 7 is a scenario to which the technical solution provided in the embodiment of the present application is applied;

fig. 8 is a first schematic diagram illustrating a power control method according to an embodiment of the present disclosure;

fig. 9 is a scenario to which the technical solution provided in the embodiment of the present application is applied;

fig. 10 is a scenario to which the technical solution provided by the embodiment of the present application is applied;

fig. 11 is a scenario to which the technical solution provided in the embodiment of the present application is applied;

fig. 12 is a first schematic structural diagram of a communication device according to an embodiment of the present disclosure;

fig. 13 is a second schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 14 is a third schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The following describes in detail a power control method and apparatus provided in the embodiments of the present application with reference to the accompanying drawings.

The technical scheme provided by the application can be applied to various communication systems, such as the current 3G and 4G communication systems, and future evolution networks, such as a 5G communication system. For example, Wideband Code Division Multiple Access (WCDMA) systems, time division-synchronous code division multiple access (TD-SCDMA) systems, Long Term Evolution (LTE) systems, LTE Advanced (LTE-a) systems, New Radio (NR) systems, third generation partnership project (3 GPP) related cellular systems, multiple communication convergence systems, and the like, as well as other such communication systems. A variety of application scenarios may be included, which may include scenarios such as machine-to-machine (M2M), D2M, macro-micro communication, enhanced mobile internet (eMBB), ultra high reliability and ultra low latency communication (urrllc), and mass internet of things communication (mtc), and these scenarios may include but are not limited to: a communication scenario between the terminal device and the terminal device, a communication scenario between the network device and the network device, a communication scenario between the network device and the terminal device, and the like.

The technical solution provided in the embodiment of the present application may be applied to a system architecture as shown in fig. 1, where the system architecture may include a plurality of network devices (e.g., network device 101, network device 102, and network device 103) and one or more terminal devices (e.g., terminal device 201, terminal device 202, terminal device 203, terminal device 204, terminal device 205, terminal device 206, terminal device 207, and terminal device 208) connected to the network devices.

The network device may be a device that is capable of communicating with the terminal device. The network device may be an nb (nodeb) in Wideband Code Division Multiple Access (WCDMA), an eNB or enodeb (evolved nodeb) in Long Term Evolution (LTE), and a node in a 5G mobile communication system, where the 5G node may be: an access node, a next generation base station (gNB), a Transmission Receive Point (TRP), a Transmission Point (TP), or some other access node. The network device may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, a network device or a relay station or an access point in a PLMN network for future evolution, or a wearable device or a vehicle-mounted device.

The terminal device may be an access terminal, a User Equipment (UE) unit, a UE station, a mobile station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent, a UE apparatus, a virtual reality terminal device, an augmented reality terminal device, or a wireless terminal in industrial control, etc. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal in a 5G network or a terminal in a future evolved PLMN network, etc.

It should be noted that the system architecture shown in fig. 1 is only for example and is not used to limit the technical solution of the present application. It should be understood by those skilled in the art that in the specific implementation process, other devices, such as a core network device, may also be included in the system architecture, and the number of network devices and terminal devices may also be configured according to specific needs.

The power control method and device provided by the embodiment of the application can be applied to terminal equipment, and the terminal equipment comprises a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. In the embodiment of the present application, a specific structure of an execution main body of the power control method is not particularly limited in the embodiment of the present application as long as the execution main body can communicate with the power control method according to the embodiment of the present application by running a program recorded with codes of the power control method according to the embodiment of the present application, for example, the execution main body of the power control method provided in the embodiment of the present application may be a terminal device, or a functional module capable of calling the program and executing the program in the terminal device, or a communication device applied to the terminal device, such as a chip, and the present application is not limited thereto.

Moreover, various aspects or features of embodiments of the application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

Since a future access network may be implemented by using a cloud radio access network (C-RAN) architecture, a possible way is to divide a protocol stack architecture and functions of a conventional network device (base station) into two parts, one part is called a Central Unit (CU), the other part is called a Distributed Unit (DU), and actual deployment manners of the CUs and the DU are flexible, for example, CU parts of a plurality of base stations are integrated to form a functional entity with a large scale. Fig. 2 is a schematic diagram of a network architecture according to an embodiment of the present application. As shown in fig. 2, the network architecture includes an access network (RAN, for example) device and a terminal device. The RAN device includes a baseband device and a radio frequency device, where the baseband device may be implemented by one node or by multiple nodes, and the radio frequency device may be implemented independently by being pulled away from the baseband device, may also be integrated in the baseband device, or may be partially pulled away and partially integrated in the baseband device. For example, in an LTE communication system, a RAN device (eNB) includes a baseband device and a radio frequency device, where the radio frequency device may be arranged in a remote manner with respect to the baseband device (e.g., a Radio Remote Unit (RRU) is arranged with respect to a baseband processing unit (BBU)), and the RAN device is implemented by a node for implementing functions of protocol layers such as Radio Resource Control (RRC), packet data convergence layer protocol (PDCP), Radio Link Control (RLC), and Media Access Control (MAC). As another example, in an evolved structure, a baseband device may include CUs and DUs, and a plurality of DUs may be centrally controlled by one CU. As shown in fig. 2, the CU and the DU may be divided according to protocol layers of the wireless network, for example, functions of a packet data convergence layer protocol layer and above protocol layers are provided in the CU, and functions of protocol layers below the PDCP, for example, functions of an RLC and MAC layer, are provided in the DU.

This division of the protocol layers is only an example, and it is also possible to divide the protocol layers at other protocol layers, for example, at the RLC layer, and the functions of the RLC layer and the protocol layers above are set in the CU, and the functions of the protocol layers below the RLC layer are set in the DU; alternatively, the functions are divided into some protocol layers, for example, a part of the functions of the RLC layer and the functions of the protocol layers above the RLC layer are provided in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are provided in the DU. In addition, the processing time may be divided in other manners, for example, by time delay, a function that needs to satisfy the time delay requirement for processing is provided in the DU, and a function that does not need to satisfy the time delay requirement is provided in the CU.

In addition, the radio frequency device may be pulled away, not placed in the DU, or integrated in the DU, or partially pulled away and partially integrated in the DU, which is not limited herein.

In addition, with continuing reference to fig. 3, with respect to the architecture shown in fig. 2, the Control Plane (CP) and the User Plane (UP) of the CU may be separated and implemented by being divided into different entities, i.e. a control plane CU entity (CU-CP entity) and a user plane CU entity (CU-UP entity), respectively.

In the above network architecture, the signaling/data generated by the CU may be transmitted to the terminal device through the DU, or the signaling/data generated by the terminal device may be transmitted to the CU through the DU. The DU may pass through the end device or CU directly through protocol layer encapsulation without parsing the signaling/data. In the following embodiments, if transmission of such signaling/data between the DU and the terminal device is involved, the transmission or reception of the signaling/data by the DU includes such a scenario. For example, the signaling of the RRC or PDCP layer is finally processed into the signaling/data of the physical layer (PHY) to be transmitted to the terminal device, or converted from the received signaling/data of the PHY layer. Under this architecture, the signaling/data of the RRC or PDCP layer can also be considered to be transmitted by the DU, or by the DU and the radio frequency.

In the above embodiment, the CU is divided into network devices in the RAN, and furthermore, the CU may also be divided into network devices in the core network, which is not limited herein.

The apparatus in the following embodiments of the present application may be located in a terminal device or a network device according to the functions implemented by the apparatus. When the above structure of CU-DU is adopted, the network device may be a CU node, or a DU node, or a RAN device including the functions of the CU node and the DU node.

In this application, the device for executing the power control method may be a network device or a terminal device, or may be a device applied to the network device or the terminal device, for example, a chip, or other devices for implementing the power control method. The power control method performed by the network device and the terminal device is described as an example.

Some of the terms referred to in this application are explained below:

1. first position, period for converting downlink resource to uplink resource

In a wireless communication system, a Frequency Division Duplex (FDD) mode and a Time Division Duplex (TDD) mode may be classified according to a difference in a duplex mode. For a wireless communication system operating in FDD mode, pairs of frequency bands are usually included for communication, one of the frequency bands of a pair is used for downlink communication from a network device to a terminal device, and the other frequency band is used for uplink communication from the terminal device to the network device.

For wireless communication systems operating in TDD mode, an operating frequency band (referred to as an unpaired frequency band) is typically included. For a system using unpaired frequency bands, in a certain period of time, in an area covered by the same network equipment, the whole working frequency band is only used for downlink transmission or only used for uplink transmission; the network device configures a frame structure for determining time periods for downlink and uplink transmissions. Illustratively, fig. 4 is a frame structure configuration, in which time slots numbered 0, 1, 2, 5, 6, and 7 are downlink transmission time slots, and time slots numbered 4 and 9 are uplink transmission time slots. The hardware of the network device and the terminal device needs to spend a certain time switching from the downlink communication to the uplink communication, and special time slots are needed to be set in the downlink transmission time slots and the uplink transmission time slots as protection intervals for the network device and the terminal device to complete the switching. The time slots numbered 3 and 8 in fig. 4 are special time slots including a part of the downlink time period, a part of the uplink time period, and a part of the unknown time period, wherein the unknown time period can be understood as a time period temporarily not used for uplink communication nor downlink communication. The unknown time period may be a flexible time period, i.e., the portion of the time period may be flexibly used for uplink or downlink communication. In general, time slots similar to the

numbers

3 and 8 may be referred to as special time slots. Note that the special timeslot is only a name of such timeslot, and is used to distinguish between the downlink timeslot and the uplink timeslot, and is not limited thereto. In addition, it takes a certain time for the hardware of the network device and the terminal device to switch from downlink communication to uplink communication, so the unknown time period configured in the special time slot can be used as a guard interval, so that the network device and the terminal device complete the downlink-to-uplink switching. In the implementation of the present application, a conversion position (i.e., a position of a special timeslot) from a downlink transmission resource to an uplink transmission resource is recorded as a first position; for example, the first position may be the position of slot 4, or the first position may be the position of slot 9.

In this embodiment, a resource at a first location, a set of consecutive downlink transmission resources before the first location, and a set of consecutive uplink transmission resources after the first location are recorded as a downlink-to-uplink resource conversion period. For example, in fig. 4, the time slots numbered 0-4 are a period for converting downlink resources to uplink resources; the time slot numbered 5-9 is a period for converting the downlink resource to the uplink resource.

2. The term "plurality" herein means two or more. The terms "first" and "second" herein are used to distinguish between different objects, and are not used to describe a particular order of objects. For example, the first power parameter and the second power parameter are only used for distinguishing different power parameters, and the sequence order thereof is not limited. 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 the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The terminal device may send a random preamble sequence to the network device on the random access resource, and before sending the random preamble sequence, it needs to determine the power for sending the random preamble sequence. In wireless communication networks, there is a problem of interference between devices. For example, when the terminal device sends the random preamble sequence, the network device may not correctly receive the random preamble sequence due to interference between devices.

For example, for a TDD network deployed by the same operator, the frame structure configuration of all network devices is generally the same, and the transmission timing and the reception timing are the same, that is, all network devices are synchronized to avoid interference between network devices in close geographic locations. When the network devices are synchronized, the network devices can only be in downlink communication or uplink communication at the same time, and no interference exists among the network devices. When the network devices are not synchronized, the network devices are in downlink communication and uplink communication at the same time, so that the network devices performing downlink communication interfere with the network devices performing uplink communication, as shown in fig. 5, the uplink communication of the network device in the serving cell is interfered by the downlink communication of the network devices in the neighboring cells.

Moreover, synchronization between network devices can only ensure that no interference exists between network devices with close geographical locations, and for two network devices with far geographical locations, due to propagation delay of wireless communication, downlink to uplink switching locations in a special time slot may be caused, and a downlink signal of network device a causes interference to uplink communication of network device B, which may be referred to as long-distance interference, as shown in fig. 6. Although the distance between two network devices is long and the power loss of the wireless signal due to the distance is large, the transmission power of downlink communication of the network devices is often large, so that the power of the interference signal received by the interfered network device is still large, and a large loss is caused to the performance of uplink communication.

Further, from the perspective of the interfered network device, the interfered network device may be interfered by a plurality of network devices, as shown in fig. 7, an uplink symbol immediately after the transition position from the downlink transmission resource to the uplink transmission resource may be interfered not only by a network device relatively close to the uplink transmission resource but also by a network device relatively far away from the uplink transmission resource; while uplink symbols further behind the transition from the downlink transmission resource to the uplink transmission resource are only interfered by network devices relatively far away.

The embodiments of the present application provide a power control method and apparatus, which can be applied to the communication systems shown in fig. 1 to 3, and can determine appropriate power when sending a random preamble sequence, thereby reducing the number of times that a terminal device sends the random preamble sequence. As shown in fig. 8, the method may include S101-S103:

s101, the terminal equipment determines a first resource.

In a wireless communication system, a network device may configure random access resources, such as PRACH, for all terminal devices within a cell. In one implementation, the random access resources configured for all terminal devices within a cell may be the same. When the terminal device has an uplink communication requirement, it may select a resource from PRACH resources configured by the network device, and send a random preamble sequence (preamble) to the network device. The resource selected by the terminal device is a first resource, and the first resource is a random access resource of a random preamble sequence to be sent.

The random access resource includes at least one of a time domain resource, a frequency domain resource or a code domain resource. The time domain resource includes a time segment, which may be one or more time units, which may be one of a subframe, a slot, a minislot, a symbol, and a sampling interval. The frequency domain resources comprise a segment of frequency domain bandwidth, which may be one or more frequency domain resource units, which may be one of subcarriers, frequency domain resource blocks, subbands. The code domain resource may be a sequence, etc.

S102, the terminal equipment determines the power for sending the random preamble sequence according to the position information of the first resource.

Before sending the random preamble sequence, the terminal device needs to determine the power for sending the random preamble sequence.

Exemplarily, the power of the random preamble sequence sent by the terminal device is related to a random received target power (PRTP), a Path Loss (PL) obtained by the terminal device estimating a path loss between the network device and the terminal according to a downlink reference signal sent by the network device, and a maximum transmit power Pmax of the terminal device.

In one implementation, the terminal device determines the power PT for sending the random preamble sequence as follows:

PT＝min{Pmax，PRTP+PL}。

in one implementation, the terminal device determines the PRTP as follows:

PRTP＝C_PRTP+Delta_p+(P_counter-1)*P_step。

wherein, C_PRTPIs the random preamble target received initial power; delta_pA power offset value associated with a random preamble format; p_counterSending the power climbing times of the random leader sequence to the terminal equipment; p_stepIs the power ramp value associated with the number of times the random preamble was sent. Illustratively, P is the first time the terminal device sends a random preamble sequence _counter1 is ═ 1; if the terminal device does not receive the feedback information issued by the network device within a certain time after sending the random leader sequence, the terminal device considers that the sending fails, and sends the random leader sequence to the network device again, and when the terminal device sends the random leader sequence for the second time, P _counter2. The PRTP value of the random preamble sequence transmitted for the second time is larger than that of the random preamble sequence transmitted for the first time, and the method is called power climbing. The terminal device will continuously climb until it successfully receives the feedback information sent by the network device, or the power of the random preamble sequence sent by the terminal device reaches the maximum transmitting power of the terminal device.

In this implementation, C_PRTP、Delta_pAnd P_stepAll are cell level parameters configured by the network device for the terminal device, and the power of the random preamble sequence sent by the terminal device in the same cell is the same. If the interference on the random access resource of the random preamble sequence sent by the terminal equipment is large, the power can climb for many times.

In another implementation, when the terminal device determines the power for transmitting the random preamble sequence, the influence of interference between network devices on the network device receiving the random preamble sequence may be considered. For example, the strength of the long-distance interference suffered by the uplink symbol of the interfered network device is related to the distance between the uplink symbol and the switching position from the downlink transmission resource to the uplink transmission resource, and the closer the uplink symbol is, the stronger the interference is, the higher the power of the terminal device for sending the random preamble sequence is; the more distant uplink symbols are interfered less, the less power the terminal device sends the random preamble sequence.

The terminal device may determine the power at which to transmit the random preamble sequence based on the position at which to transmit the random preamble sequence.

In one implementation, the terminal device may determine the power for transmitting the random preamble sequence according to the time domain position of the random access resource for transmitting the random preamble sequence. For example, the first random access resource and the second random access resource are in the same downlink resource-to-uplink resource conversion period, and the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position; the terminal equipment determines that a first value of power adopted by the random preamble sequence sent on the first random access resource is larger than a second value of power adopted by the random preamble sequence sent on the second random access resource. For example, as shown in fig. 9, a first downlink resource to uplink resource conversion period includes time slots 0 to 4, a second downlink resource to uplink resource conversion period includes time slots 5 to 9, a time domain position of the first random access resource is time slot 8, a time domain position of the second random access resource is time slot 9, and the first position is time slot 7; the distance between the time domain position of the first random access resource and the first position is 1 time slot, the distance between the time domain position of the second random access resource and the first position is 2 time slots, and the terminal equipment determines that the power for sending the random preamble sequence on the time slot 8 is greater than the power for sending the random preamble sequence on the time slot 9. It should be noted that, here, it is not limited that the terminal device needs to transmit the random preamble sequence in both the time slot 8 and the time slot 9, and it is essential that when the parameters related to the random preamble sequence configured for the terminal device by the network device are the same and the parameters determined by the terminal through measurement, such as the path loss, are also the same, and when the terminal does not perform power ramp-up or ramp-up times are the same, the power at which the terminal selects to transmit the random preamble sequence in the time slot 8 is greater than the power at which the terminal selects to transmit the random preamble sequence in the time slot 9. Further, the first random access resource and the second random access resource may also be in different periods of conversion from the downlink resource to the uplink resource. Illustratively, the time domain position of the first random access resource is a time slot 4, the time domain position of the second random access resource is a time slot 9, the first position corresponding to the first random access resource is a time slot 3, and the time domain position of the second random access resource is a time slot 7, it can be seen that the distance between the time domain position of the first random access resource and the corresponding first position thereof is 1 time slot, and the distance between the time domain position of the second random access resource and the corresponding first position thereof is 2 time slots, then the terminal device determines that the power for sending the random preamble sequence on the time slot 4 is greater than the power for sending the random preamble sequence on the time slot 9. Illustratively, as shown in fig. 10, the uplink time period includes 30 symbols, the hatched squares in the figure are symbols occupied by the random access resources, the blank squares are not symbols occupied by the random access resources, and one random access resource includes 2 symbols; the first random access resource is the random access resource marked with the number 3 in fig. 10, and the second random access resource is the random access resource marked with the number 6 in fig. 10; the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position, and the terminal equipment determines that the power for sending the random preamble sequence on the random access resource with the reference number of 3 is larger than the power for sending the random preamble sequence on the random access resource with the reference number of 6.

In one implementation, the terminal device may determine the power for transmitting the random preamble sequence according to the frequency domain location of the random access resource for transmitting the random preamble sequence. For example, the time domain positions of the third random access resource and the fourth random access resource are the same, and the frequency domain positions of the third random access resource and the fourth random access resource belong to different frequency domain sets; the third value of the power used by the terminal device to send the random preamble sequence on the third random access resource is different from the fourth value of the power used by the terminal device to send the random preamble sequence on the fourth random access resource. For example, as shown in fig. 11, frequency domain resource blocks 0 to 7 are a frequency domain set 1, and frequency domain resource blocks 8 to 15 are a frequency domain set 2; the third random access resource is a random access resource No. 0 and belongs to the frequency domain set 1, and the fourth random access resource is a random access resource No. 1 and belongs to the frequency domain set 2; the terminal equipment determines that the power adopted for sending the random preamble sequence on the number 0 random access resource is different from the power adopted for sending the random preamble sequence on the number 1 random access resource. It should be noted that the frequency domain set is a logical classification of frequency domain resources, for example, the narrowband resources are divided into a frequency domain set 1, and the wideband resources are divided into a frequency domain set 2.

In one implementation, the terminal device may determine the power for transmitting the random preamble sequence according to the location information of the first resource. Wherein the position information includes at least one of time domain position information and frequency domain position information.

The time domain location information may be time deviation information of a time domain time period of the random access resource with respect to a reference time point, which may be preset. For example, with the start time of one frame as a time reference point, that is, the start time t of one frame is 0, the time domain location information of the random access resource may be the start time of the time domain period corresponding to the random access resource, for example, t is 4ms, 8ms or 9 ms; of course, the time domain location information of the random access resource may also be the end time of the time domain period, for example, t is 5ms, 9ms, or 10 ms. For example, as shown in fig. 9, with time slot 0 as a reference point, t is 0 at time slot 0; the starting time of the random access resource on the time slot 4 is time domain position information, and t is 4 ms; if the ending time of the random access resource in the time slot 4 is time domain location information, t is 5 ms.

The time domain location information may also be number information of a time unit corresponding to the random access resource, such as a number based on some predetermined time reference point. Illustratively, the number may be a number of a first time unit in one frame in a time period occupied by the random access resource; for example, if the time unit is a symbol, the time domain position information may be a symbol number of a first symbol in one frame, and if the time unit is a slot, the time domain position information may be a slot number of the first slot in one frame. In one implementation, the time domain location information is an uplink time unit number of a time unit corresponding to the random access resource in a period of converting from a downlink resource to an uplink resource. For example, taking fig. 9 as an example, slot 4, slot 8 and slot 9 are each a random access resource. According to the uplink time slot number of a time unit corresponding to the random access resource in a conversion period from the downlink resource to the uplink resource, the number of the time slot 4 is 0, the number of the time slot 8 is 0, and the number of the time slot 9 is 1; of course, the numbering may be from 1, i.e. slot 4 is numbered 1, slot 8 is numbered 1, and slot 9 is numbered 2. Taking fig. 10 as an example, shaded squares in the figure are symbols occupied by the random access resources, blank squares are not symbols occupied by the random access resources, and one random access resource includes 2 symbols; the time domain location information of the random access resource is 0, 3, 6, 9, 12, 17, 20, 23, 26, respectively.

The time domain position information may also be a resource number of the random access resource in a period of conversion from a downlink resource to an uplink resource. For example, taking fig. 9 as an example, slot 4, slot 8 and slot 9 are each a random access resource. Slot 4 is numbered 0, slot 8 is numbered 0, and slot 9 is numbered 1. Taking fig. 10 as an example, shaded squares in the figure are symbols occupied by the random access resources, blank squares are not symbols occupied by the random access resources, and one random access resource includes 2 symbols; the time domain location information of the random access resource is numbered 0, 1, 2, 3, 4, 5, 6, 7, 8.

The frequency domain location information may be location information of a certain frequency domain resource unit in the frequency domain resources occupied by the random access resources, such as a number of a first frequency domain resource block, or a number of a first subcarrier. Taking fig. 11 as an example, the frequency domain location information corresponding to the random access resource No. 0 is number 0, and the frequency domain location information corresponding to the random access resource No. 1 is number 10.

The frequency domain location information may also be a resource number of the random access resource in the frequency domain. Taking fig. 11 as an example, the frequency domain location information of the random access resource No. 0 is number 0, and the frequency domain location information of the random access resource No. 1 is number 1.

In one implementation, the terminal device may determine the power for transmitting the random preamble sequence according to the location information of the first resource. The method for the terminal device to determine the power for sending the random preamble sequence according to the location information of the first resource may include the following steps:

and (I) the terminal equipment determines the target receiving power of the random access preamble according to the position information of the first resource.

1. And the terminal equipment determines the random access preamble target receiving power according to the position information of the first resource.

In one implementation, the terminal device determines the random access preamble target receiving power according to the time domain location information of the first resource. For example, the first random access resource and the second random access resource are in the same downlink resource-to-uplink resource conversion period, and the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position; the terminal device determines that a first value of the target receiving power of the random access preamble corresponding to the first random access resource is greater than a second value of the target receiving power of the random access preamble corresponding to the second random access resource. That is, the random access preamble target receiving power of the first resource on the first random access resource is greater than the random access preamble target receiving power of the first resource on the second random access resource. For example, taking fig. 9 as an example, the target random access preamble receiving power corresponding to the random preamble sequence transmitted in the time slot 8 is greater than the target random access preamble receiving power corresponding to the random preamble sequence transmitted in the time slot 9. It should be noted that, here, it is not limited that the terminal device needs to transmit the random preamble sequence in both the time slot 8 and the time slot 9, and it is essential that when the parameters related to the random preamble sequence configured for the terminal device by the network device are the same and the parameters, such as the path loss, determined by the terminal through measurement are also the same, and when the power of the terminal does not climb or the number of times of climbing is the same, the target receiving power of the random access preamble corresponding to the random preamble sequence transmitted in the time slot 8 determined by the terminal is greater than the target receiving power of the random access preamble corresponding to the random preamble sequence transmitted in the time slot 9. Further, the first random access resource and the second random access resource may also be in different periods of conversion from the downlink resource to the uplink resource. Illustratively, the time domain position of the first random access resource is a time slot 4, the time domain position of the second random access resource is a time slot 9, the first position corresponding to the first random access resource is a time slot 3, and the time domain position of the second random access resource is a time slot 7, it can be seen that the distance between the time domain position of the first random access resource and the corresponding first position thereof is 1 time slot, and the distance between the time domain position of the second random access resource and the corresponding first position thereof is 2 time slots, then the terminal device determines that the random access preamble target receiving power corresponding to the random preamble sequence sent on the time slot 4 is greater than the random access preamble target receiving power corresponding to the random preamble sequence sent on the time slot 9. Illustratively, as shown in fig. 10, the uplink time period includes 30 symbols, the hatched squares in the figure are symbols occupied by the random access resources, the blank squares are not symbols occupied by the random access resources, and one random access resource includes 2 symbols; the first random access resource is the random access resource marked with the number 3 in fig. 10, and the second random access resource is the random access resource marked with the number 6 in fig. 10; the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position, and the terminal equipment determines that the receiving power of the random access preamble target corresponding to the random preamble sequence sent on the random access resource with the reference number 3 is larger than the receiving power of the random access preamble target corresponding to the random preamble sequence sent on the random access resource with the reference number 6.

Illustratively, if the time domain position information of the first resource is less than or equal to a first threshold, the random access preamble target receiving power is a first value; if the time domain position information of the first resource is larger than the first threshold, the random access preamble target receiving power is a second value; wherein the first value is greater than the second value. For example, taking fig. 10 as an example, the time domain position information is an uplink time unit number of a time unit corresponding to the random access resource in a downlink resource-to-uplink resource conversion period, and the time domain position information of the random access resource is 0, 3, 6, 9, 12, 17, 20, 23, and 26, respectively. Setting a first threshold as 10, and if the time domain position information of the first resource is 0, 3, 6 or 9, then the random access preamble target receiving power is a first value; and if the time domain position information of the first resource is 12, 17, 20, 23 or 26, the target received power of the random access preamble is a second value, wherein the first value is greater than the second value.

In another implementation manner, the terminal device determines the random access preamble target receiving power according to the frequency domain location information of the first resource. For example, the time domain positions of the third random access resource and the fourth random access resource are the same, and the frequency domain positions of the third random access resource and the fourth random access resource belong to different frequency domain sets; the terminal device determines that the first value of the random access preamble target received power corresponding to the third random access resource is different from the second value of the random access preamble target received power corresponding to the fourth random access resource. For example, as shown in fig. 11, frequency domain resource blocks 0 to 7 are a frequency domain set 1, and frequency domain resource blocks 8 to 15 are a frequency domain set 2; the third random access resource is a random access resource No. 0 and belongs to the frequency domain set 1, and the fourth random access resource is a random access resource No. 1 and belongs to the frequency domain set 2; the terminal equipment determines that the random access leading target receiving power corresponding to the random access resource No. 0 is different from the random access leading target receiving power corresponding to the random access resource No. 1. It should be noted that the frequency domain set is a logical classification of frequency domain resources, for example, the narrowband resources are divided into a frequency domain set 1, and the wideband resources are divided into a frequency domain set 2.

2. And the terminal equipment determines the power for sending the random preamble sequence according to the random access preamble target receiving power.

The power for sending the random preamble sequence is the smaller of the sum of the target receiving power of the random access preamble and the path loss determined by the terminal equipment and the maximum sending power of the terminal equipment.

And (II) the terminal equipment determines a first power parameter according to the position information of the first resource.

1. And the terminal equipment determines a first power parameter according to the position information of the first resource.

In one implementation, the terminal device determines the first power parameter according to the time domain location information of the first resource. For example, the first random access resource and the second random access resource are in the same downlink resource-to-uplink resource conversion period, and the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position; the terminal device determines that a first value of a first power parameter corresponding to the first random access resource is greater than a second value of the first power parameter corresponding to the second random access resource. That is, the first power parameter corresponding to the position of the first resource on the first random access resource is greater than the first power parameter corresponding to the position of the first resource on the second random access resource. For example, taking fig. 9 as an example, the first power parameter corresponding to the random preamble sequence transmitted in the slot 8 is greater than the first power parameter corresponding to the random preamble sequence transmitted in the slot 9. It should be noted that, here, it is not limited that the terminal device needs to transmit the random preamble sequence in both the time slot 8 and the time slot 9, and it is essential that when the parameters related to the random preamble sequence configured for the terminal device by the network device are the same and the parameters, such as the path loss, determined by the terminal through measurement are also the same, and when the terminal does not perform power ramp-up or ramp-up times are the same, the first power parameter corresponding to the random preamble sequence transmitted in the time slot 8 determined by the terminal is greater than the first power parameter corresponding to the random preamble sequence transmitted in the time slot 9. Further, the first random access resource and the second random access resource may also be in different periods of conversion from the downlink resource to the uplink resource. Illustratively, the time domain position of the first random access resource is a time slot 4, the time domain position of the second random access resource is a time slot 9, the first position corresponding to the first random access resource is a time slot 3, and the time domain position of the second random access resource is a time slot 7, it can be seen that the distance between the time domain position of the first random access resource and the corresponding first position thereof is 1 time slot, and the distance between the time domain position of the second random access resource and the corresponding first position thereof is 2 time slots, then the terminal device determines that the first power parameter corresponding to the random preamble sequence sent on the time slot 4 is greater than the first power parameter corresponding to the random preamble sequence sent on the time slot 9. Illustratively, as shown in fig. 10, the uplink time period includes 30 symbols, the hatched squares in the figure are symbols occupied by the random access resources, the blank squares are not symbols occupied by the random access resources, and one random access resource includes 2 symbols; the first random access resource is the random access resource marked with the number 3 in fig. 10, and the second random access resource is the random access resource marked with the number 6 in fig. 10; the distance between the time domain position and the first position of the first random access resource is smaller than the distance between the time domain position and the first position of the second random access resource, and the terminal equipment determines that the first power parameter corresponding to the random preamble sequence sent on the random access resource with the reference number of 3 is larger than the first power parameter corresponding to the random preamble sequence sent on the random access resource with the reference number of 6.

Illustratively, the first power parameter is a first value if the time domain location information of the first resource is less than or equal to a first threshold; if the time domain position information of the first resource is larger than the first threshold, the first power parameter is a second value; wherein the first value is greater than the second value. For example, taking fig. 10 as an example, the time domain position information is an uplink time unit number of a time unit corresponding to the random access resource in a downlink resource-to-uplink resource conversion period, and the time domain position information of the random access resource is 0, 3, 6, 9, 12, 17, 20, 23, and 26, respectively. Setting a first threshold as 10, and if the time domain position information of the first resource is 0, 3, 6 or 9, setting the first power parameter as a first value; the first power parameter is a second value if the time domain location information of the first resource is 12, 17, 20, 23 or 26, wherein the first value is greater than the second value.

In another implementation, the terminal device determines the first power parameter according to frequency domain location information of the first resource. For example, the time domain positions of the third random access resource and the fourth random access resource are the same, and the frequency domain positions of the third random access resource and the fourth random access resource belong to different frequency domain sets; the terminal device determines that the first value of the first power parameter corresponding to the third random access resource is different from the second value of the first power parameter corresponding to the fourth random access resource. For example, as shown in fig. 11, frequency domain resource blocks 0 to 7 are a frequency domain set 1, and frequency domain resource blocks 8 to 15 are a frequency domain set 2; the third random access resource is a random access resource No. 0 and belongs to the frequency domain set 1, and the fourth random access resource is a random access resource No. 1 and belongs to the frequency domain set 2; the terminal equipment determines that the first power parameter corresponding to the No. 0 random access resource is different from the first power parameter corresponding to the No. 1 random access resource. It should be noted that the frequency domain set is a logical classification of frequency domain resources, for example, the narrowband resources are divided into a frequency domain set 1, and the wideband resources are divided into a frequency domain set 2.

The first power parameter is one of a random preamble target receiving initial power, a power deviation value related to a random preamble format or a power ramp value related to a random preamble sending frequency.

If the first power parameter is the initial power of the random leading target, the terminal equipment determines the initial power of the random leading target according to the position information of the first resource, and the power deviation value related to the random leading format and the power climbing value related to the random leading frequency are cell-level parameters configured for the terminal equipment by the network equipment.

If the first power parameter is a power deviation value related to the random preamble format, the terminal device determines the power deviation value related to the random preamble format according to the position information of the first resource, and a power ramp value related to the receiving initial power of the random preamble target and the sending random preamble times is a cell level parameter configured for the terminal device by the network device.

If the first power parameter is a power ramp value related to the random preamble sending times, the terminal device determines the power ramp value related to the random preamble sending times according to the position information of the first resource, and a power offset value related to the random preamble format and the initial power received by the random preamble target is a cell level parameter configured for the terminal device by the network device.

2. And the terminal equipment determines the target receiving power of the random access preamble according to the first power parameter.

In one implementation, the terminal device determines the random access preamble target received power according to the following formula.

PRTP＝C_PRTP+Delta_p+(P_counter-1)*P_step。

Wherein, C_PRTPIs the random preamble target received initial power; delta_pA power offset value associated with a random preamble format; p_counterSending the power climbing times of the random leader sequence to the terminal equipment; p_stepIs the power ramp value associated with the number of times the random preamble was sent.

It should be noted that the random access preamble target receiving power and C_PRTP、Delta_p、P_stepIs related to at least one of the other. As the system evolves, the parameters affecting the target received power of the random access preamble may increase or decrease, and the formula for determining the target received power of the random access preamble is not limited to the above form.

3. And the terminal equipment determines the power for sending the random preamble sequence according to the random access preamble target receiving power.

And (III) the terminal equipment determines a first power offset parameter according to the position information of the first resource.

1. The terminal device determines a second power parameter.

In one implementation, the terminal device determines a second power parameter, where the second power parameter includes a target random access preamble received power PRTP and a path loss PL determined by the terminal device, and the second power parameter is, for example, PRTP + PL.

In one implementation, the terminal device determines the random access preamble target received power PRTP according to the following formula.

PRTP＝C_PRTP+Delta_p+(P_counter-1)*P_step。

Wherein, C_PRTPIs the random preamble target received initial power; delta_pA power offset value associated with a random preamble format; p_counterSending the power climbing times of the random leader sequence to the terminal equipment; p_stepIs the power ramp value associated with the number of times the random preamble was sent. C_PRTP、Delta_pAnd P_stepIs a cell level parameter configured by the network device.

2. And the terminal equipment determines a first power offset parameter according to the position information of the first resource.

First power offset parameter P_1-offsetIs determined by the terminal device from the location information of the first resource, relative to the offset of the second power parameter (PRTP + PL).

The method for the terminal device to determine the first power offset parameter according to the location information of the first resource may include:

the first method is as follows: and the terminal equipment determines a first power offset parameter according to the position information of the first resource.

In one implementation, the terminal device determines the first power offset parameter according to the time domain location information of the first resource. For example, the first random access resource and the second random access resource are in the same downlink resource-to-uplink resource conversion period, and the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position; the terminal device determines that a first value of the first power offset parameter corresponding to the first random access resource is greater than a second value of the first power offset parameter corresponding to the second random access resource. That is, the first power offset parameter corresponding to the position of the first resource on the first random access resource is greater than the first power offset parameter corresponding to the position of the first resource on the second random access resource. For example, taking fig. 9 as an example, the first power offset parameter corresponding to the random preamble sequence transmitted in the slot 8 is greater than the first power offset parameter corresponding to the random preamble sequence transmitted in the slot 9. It should be noted that, here, it is not limited that the terminal device needs to transmit the random preamble sequence in both the time slot 8 and the time slot 9, and it is essential that when the parameters related to the random preamble sequence configured for the terminal device by the network device are the same, and parameters, such as path loss, determined by the terminal through measurement are also the same, and when the terminal does not perform power ramp-up or ramp-up times are the same, the first power offset parameter corresponding to the random preamble sequence transmitted in the time slot 8 determined by the terminal is greater than the first power offset parameter corresponding to the random preamble sequence transmitted in the time slot 9. Further, the first random access resource and the second random access resource may also be in different periods of conversion from the downlink resource to the uplink resource. Illustratively, the time domain position of the first random access resource is a time slot 4, the time domain position of the second random access resource is a time slot 9, the first position corresponding to the first random access resource is a time slot 3, and the time domain position of the second random access resource is a time slot 7, it can be seen that the distance between the time domain position of the first random access resource and the corresponding first position thereof is 1 time slot, and the distance between the time domain position of the second random access resource and the corresponding first position thereof is 2 time slots, then the terminal device determines that the first power offset parameter corresponding to the random preamble sequence sent on the time slot 4 is greater than the first power offset parameter corresponding to the random preamble sequence sent on the time slot 9. Illustratively, as shown in fig. 10, the uplink time period includes 30 symbols, the hatched squares in the figure are symbols occupied by the random access resources, the blank squares are not symbols occupied by the random access resources, and one random access resource includes 2 symbols; the first random access resource is the random access resource marked with the number 3 in fig. 10, and the second random access resource is the random access resource marked with the number 6 in fig. 10; the distance between the time domain position and the first position of the first random access resource is smaller than the distance between the time domain position and the first position of the second random access resource, and the terminal equipment determines that the first power offset parameter corresponding to the random preamble sequence sent on the random access resource with the reference number of 3 is larger than the first power offset parameter corresponding to the random preamble sequence sent on the random access resource with the reference number of 6.

Illustratively, the first power offset parameter is a first value if the time domain location information of the first resource is less than or equal to a first threshold; if the time domain position information of the first resource is larger than the first threshold, the first power offset parameter is a second value; wherein the first value is greater than the second value. For example, taking fig. 10 as an example, the time domain position information is an uplink time unit number of a time unit corresponding to the random access resource in a downlink resource-to-uplink resource conversion period, and the time domain position information of the random access resource is 0, 3, 6, 9, 12, 17, 20, 23, and 26, respectively. Setting a first threshold as 10, and if the time domain position information of the first resource is 0, 3, 6 or 9, setting the first power offset parameter as a first value; the first power offset parameter is a second value if the time domain location information of the first resource is 12, 17, 20, 23 or 26, wherein the first value is greater than the second value, which is illustratively 0. It is to be understood that this is only one possible implementation manner, and the method for determining the first power offset parameter according to the time domain location information is not specifically limited, and is not limited in this application.

Illustratively, the first power offset parameter is max {0, (N-T)_index) M }, wherein, T_indexThe time domain position information of the first resource is obtained, N and M are coefficient values, and values of N and M may be predefined by a protocol or sent to the terminal device by the network device. It is to be understood that this is only one possible implementation manner, and the method for determining the first power offset parameter according to the time domain position information is not specifically limited, and the present applicationPlease note that this is not a limitation.

Illustratively, the first power offset parameter is max {0, (N1-T)_index)*(N2-F_index) M }, wherein, T_indexIs time domain location information of a first resource, F_indexFor the frequency domain location information of the first resource, N1, N2, and M are coefficient values, and values of N1, N2, and M may be predefined by a protocol, or may be sent by the network device to the terminal device. It is to be understood that this is only one possible implementation manner, and the method for determining the first power offset parameter according to the time domain position information and the frequency domain position information is not specifically limited, and is not limited in this application.

In another implementation, the terminal device determines the first power offset parameter according to the frequency domain location information of the first resource. For example, the time domain positions of the third random access resource and the fourth random access resource are the same, and the frequency domain positions of the third random access resource and the fourth random access resource belong to different frequency domain sets; the terminal device determines that the first value of the first power offset parameter corresponding to the third random access resource is different from the second value of the first power offset parameter corresponding to the fourth random access resource. For example, as shown in fig. 11, frequency domain resource blocks 0 to 7 are a frequency domain set 1, and frequency domain resource blocks 8 to 15 are a frequency domain set 2; the third random access resource is a random access resource No. 0 and belongs to the frequency domain set 1, and the fourth random access resource is a random access resource No. 1 and belongs to the frequency domain set 2; the terminal equipment determines that the first power offset parameter corresponding to the No. 0 random access resource is different from the first power offset parameter corresponding to the No. 1 random access resource. It should be noted that the frequency domain set is a logical classification of frequency domain resources, for example, the narrowband resources are divided into a frequency domain set 1, and the wideband resources are divided into a frequency domain set 2.

The second method comprises the following steps: the terminal device receives a first power offset parameter from the network device.

The network equipment determines a first power offset parameter, wherein the first power offset parameter is related to position information of random access resources for sending the random preamble sequence, and the position information comprises at least one of time domain position information and frequency domain position information.

In an implementation manner, a first value of a first power offset parameter corresponding to a first time domain position is greater than a second value of the first power offset parameter corresponding to a second time domain position, where a distance between the first time domain position and the first position is less than a distance between the second time domain position and the first position, and the first position is a conversion position from a downlink transmission resource to an uplink transmission resource.

In one implementation, the first power offset parameters for different frequency domain locations are different.

Specifically, the method for determining the first power offset parameter by the network device may refer to a method for determining the first power offset parameter by the terminal device according to the location information of the first resource in the first mode, which is not described herein again.

The network device sends the first power offset parameter to the terminal device.

The terminal device receives a first power offset parameter from the network device. The first power offset parameter is related to the location information of the random access resource for sending the random preamble sequence, and the terminal device may determine the first power offset parameter corresponding to sending the random preamble sequence according to the location information of the first resource.

In one implementation, for a random access resource that does not receive a first power offset parameter from a network device, a terminal device may determine that a corresponding first power offset parameter is 0, or the terminal device does not determine the first power offset parameter corresponding to the random access resource.

The third method comprises the following steps:

the first power offset parameter corresponding to each first uplink resource is predefined by a protocol.

3. And the terminal equipment determines the power for sending the random preamble sequence according to the first power offset parameter.

And the terminal equipment determines the power for transmitting the random preamble sequence to be the smaller of the sum of the first power offset parameter and the second power parameter and the maximum transmission power of the terminal equipment.

That is, PT ═ min { Pmax, PRTP + PL + P_1-offsetPT is sending random preambleThe power of the sequence, Pmax is the maximum transmission power of the terminal equipment, PRTP + PL is the second power parameter, P_1-offsetIs a first power offset parameter.

And (IV) the terminal equipment determines a second power offset parameter according to the position information of the first resource.

1. The terminal device determines a third power parameter.

In one implementation, the terminal device determines a third power parameter, where the third power parameter includes a random preamble target received initial power C_PRTPPower offset Delta related to random preamble format_pPower ramp value P associated with transmission of random preamble times_stepIllustratively, the third power parameter is C_PRTP+Delta_p+(P_counter-1)*P_step。

The random preamble target receiving initial power, the power deviation value related to the random preamble format and the power ascending value related to the random preamble sending times are cell-level parameters configured by the network equipment. It should be noted that, as the system evolves, the third power parameter may also include other parameters; or the third power parameter comprises at least one of a random preamble target receiving initial power, a power deviation value related to a random preamble format or a power ramp value related to the sending times of the random preamble.

2. And the terminal equipment determines a second power offset parameter according to the position information of the first resource.

Second power offset parameter P_2-offsetIs determined by the terminal device according to the position information of the first resource and relative to the third power parameter C_PRTP+Delta_p+(P_counter-1)*P_stepThe amount of offset of (c). The method for the terminal device to determine the second power offset parameter according to the location information of the first resource may include:

the first method is as follows: and the terminal equipment determines a second power offset parameter according to the position information of the first resource.

In one implementation, the terminal device determines the second power offset parameter according to the time domain location information of the first resource. For example, the first random access resource and the second random access resource are in the same downlink resource-to-uplink resource conversion period, and the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position; the terminal device determines that a first value of a second power offset parameter corresponding to the first random access resource is greater than a second value of the second power offset parameter corresponding to the second random access resource. That is, the second power offset parameter corresponding to the position of the first resource on the first random access resource is greater than the second power offset parameter corresponding to the position of the first resource on the second random access resource. For example, taking fig. 9 as an example, the second power offset parameter corresponding to the random preamble sequence transmitted in the slot 8 is greater than the second power offset parameter corresponding to the random preamble sequence transmitted in the slot 9. It should be noted that, here, it is not limited that the terminal device needs to transmit the random preamble sequence in both the time slot 8 and the time slot 9, and it is essential that when the parameters related to the random preamble sequence configured for the terminal device by the network device are the same and the parameters, such as the path loss, determined by the terminal through measurement are also the same, and when the terminal does not perform power ramp-up or ramp-up times are the same, the second power offset parameter corresponding to the random preamble sequence transmitted in the time slot 8 determined by the terminal is greater than the second power offset parameter corresponding to the random preamble sequence transmitted in the time slot 9. Further, the first random access resource and the second random access resource may also be in different periods of conversion from the downlink resource to the uplink resource. Illustratively, the time domain position of the first random access resource is a time slot 4, the time domain position of the second random access resource is a time slot 9, the first position corresponding to the first random access resource is a time slot 3, and the time domain position of the second random access resource is a time slot 7, it can be seen that the distance between the time domain position of the first random access resource and the corresponding first position thereof is 1 time slot, and the distance between the time domain position of the second random access resource and the corresponding first position thereof is 2 time slots, then the terminal device determines that the second power offset parameter corresponding to the random preamble sequence sent on the time slot 4 is greater than the second power offset parameter corresponding to the random preamble sequence sent on the time slot 9. Illustratively, as shown in fig. 10, the uplink time period includes 30 symbols, the hatched squares in the figure are symbols occupied by the random access resources, the blank squares are not symbols occupied by the random access resources, and one random access resource includes 2 symbols; the first random access resource is the random access resource marked with the number 3 in fig. 10, and the second random access resource is the random access resource marked with the number 6 in fig. 10; the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position, and the terminal equipment determines that the second power offset parameter corresponding to the random preamble sequence sent on the random access resource with the reference number of 3 is larger than the second power offset parameter corresponding to the random preamble sequence sent on the random access resource with the reference number of 6.

Illustratively, the second power offset parameter is a first value if the time domain location information of the first resource is less than or equal to a first threshold; if the time domain position information of the first resource is larger than the first threshold, the second power offset parameter is a second value; wherein the first value is greater than the second value. For example, taking fig. 10 as an example, the time domain position information is an uplink time unit number of a time unit corresponding to the random access resource in a downlink resource-to-uplink resource conversion period, and the time domain position information of the random access resource is 0, 3, 6, 9, 12, 17, 20, 23, and 26, respectively. Setting a first threshold as 10, and if the time domain position information of the first resource is 0, 3, 6 or 9, setting the second power offset parameter as a first value; the second power offset parameter is a second value if the time domain location information of the first resource is 12, 17, 20, 23 or 26, wherein the first value is greater than the second value, which is illustratively 0. It is to be understood that this is only one possible implementation manner, and the method for determining the second power offset parameter according to the time domain location information is not specifically limited, and is not limited in this application.

Illustratively, the second power offset parameter is max {0, (N-T)_index) M }, wherein, T_indexThe time domain position information of the first resource is obtained, N and M are coefficient values, and values of N and M may be predefined by a protocol or sent to the terminal device by the network device. It is understood that this is only one possible implementation and is not specifically limited in terms of the followingThe method for determining the second power offset parameter by using the time domain location information is not limited in this application.

Illustratively, the second power offset parameter is max {0, (N1-T)_index)*(N2-F_index) M }, wherein, T_indexIs time domain location information of a first resource, F_indexFor the frequency domain location information of the first resource, N1, N2, and M are coefficient values, and values of N1, N2, and M may be predefined by a protocol, or may be sent by the network device to the terminal device. It is to be understood that this is only one possible implementation manner, and the method for determining the second power offset parameter according to the time domain position information and the frequency domain position information is not specifically limited, and this is not limited in this application.

In another implementation, the terminal device determines the second power offset parameter according to the frequency domain location information of the first resource. For example, the time domain positions of the third random access resource and the fourth random access resource are the same, and the frequency domain positions of the third random access resource and the fourth random access resource belong to different frequency domain sets; the terminal device determines that the first value of the second power offset parameter corresponding to the third random access resource is different from the second value of the second power offset parameter corresponding to the fourth random access resource. For example, as shown in fig. 11, frequency domain resource blocks 0 to 7 are a frequency domain set 1, and frequency domain resource blocks 8 to 15 are a frequency domain set 2; the third random access resource is a random access resource No. 0 and belongs to the frequency domain set 1, and the fourth random access resource is a random access resource No. 1 and belongs to the frequency domain set 2; and the terminal equipment determines that the second power offset parameter corresponding to the No. 0 random access resource is different from the second power offset parameter corresponding to the No. 1 random access resource. It should be noted that the frequency domain set is a logical classification of frequency domain resources, for example, the narrowband resources are divided into a frequency domain set 1, and the wideband resources are divided into a frequency domain set 2.

The second method comprises the following steps: the terminal device receives a second power offset parameter from the network device.

The network device determines a second power offset parameter, where the second power offset parameter is related to location information of a random access resource that transmits a random preamble sequence, and the location information includes at least one of time domain location information and frequency domain location information.

In an implementation manner, a first value of a second power offset parameter corresponding to a first time domain position is greater than a second value of the second power offset parameter corresponding to a second time domain position, where a distance between the first time domain position and the first position is less than a distance between the second time domain position and the first position, and the first position is a conversion position from a downlink transmission resource to an uplink transmission resource.

In one implementation, the second power offset parameters for different frequency domain locations are different.

Specifically, the method for determining the second power offset parameter by the network device may refer to a method for determining the second power offset parameter by the terminal device according to the location information of the first resource in the first mode, which is not described herein again.

And the network equipment sends the second power offset parameter to the terminal equipment.

The terminal device receives a second power offset parameter from the network device. The second power offset parameter is related to the position information of the random access resource for sending the random preamble sequence, and the terminal device may determine the second power offset parameter corresponding to the random preamble sequence according to the position information of the first resource.

In one implementation, for a random access resource that does not receive the second power offset parameter from the network device, the terminal device may determine that the corresponding second power offset parameter is 0, or the terminal device does not determine the second power offset parameter corresponding to the random access resource.

The third method comprises the following steps:

the second power offset parameter corresponding to each first uplink resource is predefined by the protocol.

3. And the terminal equipment determines the random access preamble target receiving power according to the second power offset parameter.

And the terminal equipment determines the target receiving power of the random access preamble as the sum of the second power offset parameter and the third power parameter.

I.e., PRTP ═ C_PRTP+Delta_p+(P_counter-1)*P_step+P_2-offsetWherein PRTP is random access preamble target received power, C_PRTP+Delta_p+(P_counter-1)*P_stepIs a third power parameter, P_2-offsetIs a second power offset parameter.

4. And the terminal equipment determines the power for sending the random preamble sequence according to the random access preamble target receiving power.

That is, PT is min { Pmax, PRTP + PL }, where PT is the power for transmitting the random preamble sequence, Pmax is the maximum transmission power of the terminal device, PRTP is the target received power of the random access preamble, and PL is the path loss determined by the terminal device.

And (V) the terminal equipment determines a third power offset parameter according to the position information of the first resource.

1. And the terminal equipment receives the cell-level parameters configured by the network equipment.

In one implementation, the terminal device receives a cell-level parameter configured by the network device: random preamble target receiving initial power C_PRTPPower offset Delta related to random preamble format_pPower ramp value P associated with transmission of random preamble times_step。

2. And the terminal equipment determines a third power offset parameter according to the position information of the first resource.

Third power offset parameter P_3-offsetThe terminal equipment determines according to the position information of the first resource, and receives initial power C relative to the random preamble target_PRTPPower offset Delta related to random preamble format_pOr sending power ramp value P related to random leading times_stepThe amount of offset of (c). The method for the terminal device to determine the third power offset parameter according to the location information of the first resource may include:

the first method is as follows: and the terminal equipment determines a third power offset parameter according to the position information of the first resource.

In one implementation, the terminal device determines the third power offset parameter according to the time domain location information of the first resource. For example, the first random access resource and the second random access resource are in the same downlink resource-to-uplink resource conversion period, and the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position; the terminal device determines that the first value of the third power offset parameter corresponding to the first random access resource is greater than the second value of the third power offset parameter corresponding to the second random access resource. That is, the third power offset parameter corresponding to the position of the first resource on the first random access resource is greater than the third power offset parameter corresponding to the position of the first resource on the second random access resource. For example, taking fig. 9 as an example, the third power offset parameter corresponding to the random preamble sequence transmitted in the slot 8 is greater than the third power offset parameter corresponding to the random preamble sequence transmitted in the slot 9. It should be noted that, here, it is not limited that the terminal device needs to transmit the random preamble sequence in both the time slot 8 and the time slot 9, and it is essential that when the parameters related to the random preamble sequence configured for the terminal device by the network device are the same and the parameters, such as the path loss, determined by the terminal through measurement are also the same, and when the terminal does not perform power ramp-up or ramp-up times are the same, the third power offset parameter corresponding to the random preamble sequence transmitted in the time slot 8 determined by the terminal is greater than the third power offset parameter corresponding to the random preamble sequence transmitted in the time slot 9. Further, the first random access resource and the second random access resource may also be in different periods of conversion from the downlink resource to the uplink resource. Illustratively, the time domain position of the first random access resource is time slot 4, the time domain position of the second random access resource is time slot 9, the first position corresponding to the first random access resource is time slot 3, and the time domain position of the second random access resource is time slot 7, it can be seen that the distance between the time domain position of the first random access resource and the corresponding first position thereof is 1 time slot, and the distance between the time domain position of the second random access resource and the corresponding first position thereof is 2 time slots, then the terminal device determines that the third power offset parameter corresponding to the random preamble sequence sent on the time slot 4 is greater than the third power offset parameter corresponding to the random preamble sequence sent on the time slot 9. Illustratively, as shown in fig. 10, the uplink time period includes 30 symbols, the hatched squares in the figure are symbols occupied by the random access resources, the blank squares are not symbols occupied by the random access resources, and one random access resource includes 2 symbols; the first random access resource is the random access resource marked with the number 3 in fig. 10, and the second random access resource is the random access resource marked with the number 6 in fig. 10; the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position, and the terminal equipment determines that the third power offset parameter corresponding to the random preamble sequence sent on the random access resource with the reference number of 3 is larger than the third power offset parameter corresponding to the random preamble sequence sent on the random access resource with the reference number of 6.

Illustratively, the third power offset parameter is a first value if the time domain location information of the first resource is less than or equal to a first threshold; if the time domain position information of the first resource is larger than the first threshold, the third power offset parameter is a second value; wherein the first value is greater than the second value. For example, taking fig. 10 as an example, the time domain position information is an uplink time unit number of a time unit corresponding to the random access resource in a downlink resource-to-uplink resource conversion period, and the time domain position information of the random access resource is 0, 3, 6, 9, 12, 17, 20, 23, and 26, respectively. Setting a first threshold as 10, and if the time domain position information of the first resource is 0, 3, 6 or 9, setting a third power offset parameter as a first value; the third power offset parameter is a second value if the time domain location information of the first resource is 12, 17, 20, 23 or 26, wherein the first value is greater than the second value, which is illustratively 0. It is to be understood that this is only one possible implementation manner, and the method for determining the third power offset parameter according to the time domain location information is not specifically limited, and is not limited in this application.

Illustratively, the third power offset parameter is max {0, (N-T)_index) M }, wherein, T_indexIs the time domain position confidence of the first resourceAnd N and M are coefficient values, and the values of N and M can be predefined by a protocol or sent to the terminal equipment by the network equipment. It is to be understood that this is only one possible implementation manner, and the method for determining the third power offset parameter according to the time domain location information is not specifically limited, and is not limited in this application.

Illustratively, the third power offset parameter is max {0, (N1-T)_index)*(N2-F_index) M }, wherein, T_indexIs time domain location information of a first resource, F_indexFor the frequency domain location information of the first resource, N1, N2, and M are coefficient values, and values of N1, N2, and M may be predefined by a protocol, or may be sent by the network device to the terminal device. It should be understood that this is only one possible implementation manner, and the method for determining the third power offset parameter according to the time domain position information and the frequency domain position information is not specifically limited, and this is not limited in this application.

In another implementation, the terminal device determines the third power offset parameter according to the frequency domain location information of the first resource. For example, the time domain positions of the third random access resource and the fourth random access resource are the same, and the frequency domain positions of the third random access resource and the fourth random access resource belong to different frequency domain sets; the terminal device determines that the first value of the third power offset parameter corresponding to the third random access resource is different from the second value of the third power offset parameter corresponding to the fourth random access resource. For example, as shown in fig. 11, frequency domain resource blocks 0 to 7 are a frequency domain set 1, and frequency domain resource blocks 8 to 15 are a frequency domain set 2; the third random access resource is a random access resource No. 0 and belongs to the frequency domain set 1, and the fourth random access resource is a random access resource No. 1 and belongs to the frequency domain set 2; and the terminal equipment determines that the third power offset parameter corresponding to the No. 0 random access resource is different from the third power offset parameter corresponding to the No. 1 random access resource. It should be noted that the frequency domain set is a logical classification of frequency domain resources, for example, the narrowband resources are divided into a frequency domain set 1, and the wideband resources are divided into a frequency domain set 2.

The second method comprises the following steps: the terminal device receives a third power offset parameter from the network device.

The network device determines a third power offset parameter, where the third power offset parameter is related to location information of a random access resource that transmits a random preamble sequence, and the location information includes at least one of time domain location information and frequency domain location information.

In an implementation manner, a first value of a third power offset parameter corresponding to a first time domain position is greater than a second value of the third power offset parameter corresponding to a second time domain position, where a distance between the first time domain position and the first position is less than a distance between the second time domain position and the first position, and the first position is a conversion position from a downlink transmission resource to an uplink transmission resource.

In one implementation, the third power offset parameters for different frequency domain locations are different.

Specifically, the method for determining the third power offset parameter by the network device may refer to a method for determining the third power offset parameter by the terminal device according to the location information of the first resource in the first mode, which is not described herein again.

And the network equipment sends the third power offset parameter to the terminal equipment. .

The terminal device receives a third power offset parameter from the network device. The third power offset parameter is related to the location information of the random access resource for sending the random preamble sequence, and the terminal device may determine the third power offset parameter corresponding to sending the random preamble sequence according to the location information of the first resource.

In one implementation, for a random access resource that does not receive the third power offset parameter from the network device, the terminal device may determine that the corresponding third power offset parameter is 0, or the terminal device does not determine the third power offset parameter corresponding to the random access resource.

The third method comprises the following steps:

the third power offset parameter corresponding to each first uplink resource is predefined by the protocol.

3. And the terminal equipment determines a fourth power parameter according to the third power offset parameter.

At the third power offset parameterNumber P_3-offsetIs to receive an initial power C relative to a random preamble target_PRTPUnder the condition of the offset of (3), the fourth power parameter is C_PRTP+P_3-offset。

At a third power offset parameter P_3-offsetIs the power offset value Delta relative to the random preamble format correlation_pUnder the condition of the offset of (3), the fourth power parameter is Delta_p+P_3-offset。

At a third power offset parameter P_3-offsetIs a power ramp value P related to the number of times of transmitting random preambles_stepUnder the condition of the offset of (3), the fourth power parameter is P_step+P_3-offset。

4. And the terminal equipment determines the random access preamble target receiving power according to the fourth power parameter.

At a third power offset parameter P_3-offsetIs to receive an initial power C relative to a random preamble target_PRTPUnder the condition of the offset amount of (2), PRTP ═ C_PRTP+P_3-offset+Delta_p+(P_counter-1)*P_step。

At a third power offset parameter P_3-offsetIs the power offset value Delta relative to the random preamble format correlation_pUnder the condition of the offset amount of (2), PRTP ═ C_PRTP+Delta_p+P_3-offset+(P_counter-1)*P_step。

At a third power offset parameter P_3-offsetIs a power ramp value P related to the number of times of transmitting random preambles_stepUnder the condition of the offset amount of (2), PRTP ═ C_PRTP+Delta_p+(P_counter-1)*(P_step+P_3-offset)。

Wherein, PRTP is random access preamble target receiving power; c_PRTPIs the random preamble target received initial power; delta_pA power offset value associated with a random preamble format; p_counterSending the power climbing times of the random leader sequence to the terminal equipment; p_stepIs the power ramp value associated with the number of times the random preamble was sent. C_PRTP、Delta_pAnd P_stepAnd configuring cell-level parameters for the network equipment for the terminal equipment.

5. And the terminal equipment determines the power for sending the random preamble sequence according to the random access preamble target receiving power.

S103, the terminal device sends the random leader sequence to the network device on the first resource.

The terminal device sends the random preamble sequence to the network device on the first resource by using the power determined by any one of the implementation manners in S102.

The power control method provided by the embodiment of the application determines the power for sending the random leader sequence according to the position of the random access resource for sending the random leader sequence, and can reduce the influence of the interference between the devices on the correct receiving of the random leader sequence by the network device. Compared with the prior art, in the method for transmitting the random leader sequence by the terminal equipment in the same cell of the network equipment with the same power, the power control method provided by the embodiment of the application can determine different transmission powers aiming at different positions of the random access resource for transmitting the random leader sequence, can improve the success probability of transmitting the random leader sequence and reduce the times of transmitting the random leader sequence by the terminal equipment.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between a network device and a terminal device. It is understood that the network device and the terminal device include hardware structures and/or software modules for performing the respective functions in order to implement the functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the network device and the terminal device may be divided into functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. The following description will be given taking the example of dividing each functional module corresponding to each function.

Fig. 12 is a schematic logical structure diagram of an apparatus 500 provided in this embodiment of the present application, where the apparatus 500 may be a terminal device, and is capable of implementing a function of the terminal device in the method provided in this embodiment of the present application; the apparatus 500 may also be an apparatus capable of supporting the terminal device to implement the function of the terminal device in the method provided in the embodiment of the present application. The apparatus 500 may be a hardware structure, a software module, or a hardware structure plus a software module. The apparatus 500 may be implemented by a system-on-chip. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices. As shown in fig. 12, the apparatus 500 includes a processing module 501 and a transmitting module 502. The processing module 501 may be configured to perform S101 and S102 in fig. 8, and/or perform other steps described herein. The sending module 502 may be configured to perform S103 in fig. 8, and/or perform other steps described in this application. The processing module may also be referred to as a processing unit or by other names, and the sending module may also be referred to as a sending unit or by other names.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

Fig. 13 is a schematic logical structure diagram of an apparatus 600 provided in this embodiment of the present application, where the apparatus 600 may be a network device and can implement the functions of the network device in the method provided in this embodiment of the present application; the apparatus 600 may also be an apparatus capable of supporting a network device to implement the functions of the network device in the method provided in the embodiment of the present application. The apparatus 600 may be a hardware structure, a software module, or a hardware structure plus a software module. As shown in fig. 13, the network device 600 includes a processing module 601 and a transmitting module 602. The processing module 601 and the sending module 602 may be configured to perform the functions performed by the network device in S102 in fig. 8, and/or perform other steps described in this application. The processing module may also be referred to as a processing unit or by other names, and the sending module may also be referred to as a sending unit or by other names.

In the present embodiment, the apparatus 500 or the apparatus 600 may be presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and a memory device executing one or more software or firmware programs, an integrated logic circuit, and/or other components that can provide the described functionality.

In one possible implementation, the apparatus 500 or the apparatus 600 may take the form shown in fig. 14.

As shown in fig. 14, the apparatus 700 may include: memory 701, processor 702, and communication interface 703. The memory 701 is used for storing instructions, and when the apparatus 700 is operated, the processor 702 executes the instructions stored in the memory 701, so as to enable the apparatus 700 to execute the power control method provided by the embodiment of the present application. The memory 701, processor 702, and communication interface 703 are communicatively coupled via a bus 704. For a specific power control method, reference may be made to the description above and the related description in the drawings, and details are not repeated here. It should be noted that, in a specific implementation, the apparatus 700 may also include other hardware devices, which are not listed here. In one possible implementation, the memory 701 may also be included in the processor 702.

In an example of the present application, the processing module 501 in fig. 12 or the processing module 601 in fig. 13 may be implemented by the processor 701, and the sending module 502 in fig. 12 or the sending module 602 in fig. 13 may be implemented by the communication interface 703.

The communication interface 703 may be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other device capable of implementing communication. The processor 702 may be a field-programmable gate array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Micro Controller Unit (MCU), or a Programmable Logic Device (PLD) or other integrated chips. The memory 701 includes a volatile memory (volatile memory), such as a random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the above kind; the memory may also include any other means having a memory function such as a circuit, device, or software module.

Since the apparatus provided in the embodiment of the present application can be used to execute the power control method, the technical effects obtained by the apparatus can refer to the method embodiment, and are not described herein again.

It will be apparent to those skilled in the art that all or part of the steps of the above method may be performed by hardware associated with program instructions, and the program may be stored in a computer readable storage medium such as ROM, RAM, optical disk, etc.

The embodiment of the present application also provides a storage medium, which may include the memory 701.

For the explanation and beneficial effects of the related content in any one of the above-mentioned apparatuses, reference may be made to the corresponding method embodiments provided above, and details are not repeated here.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the present application are all or partially generated upon loading and execution of computer program instructions on a computer. The computer may be a general purpose computer, a special purpose computer, a computer network, a network appliance, a user device, or other programmable apparatus. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method of power control, comprising:

the method comprises the steps that terminal equipment determines first resources, wherein the first resources are random access resources of a random leader sequence to be sent;

the terminal equipment determines the power for sending the random leader sequence according to the position information of the first resource, wherein the position information comprises at least one of time domain position information and frequency domain position information;

and the terminal equipment adopts the power to send the random preamble sequence to network equipment on the first resource.

2. The method of claim 1,

the terminal equipment sends the random leader sequence on a first random access resource by using a first value of power which is greater than a second value of power which is used for sending the random leader sequence on a second random access resource, wherein the distance between the time domain position of the first random access resource and the first position is less than the distance between the time domain position of the second random access resource and the first position, the first position is a conversion position from downlink transmission resources to uplink transmission resources, and the first random access resource and the second random access resource are in the same conversion period from the downlink resources to the uplink resources.

3. The method according to claim 1 or 2,

and a third value of power adopted by the terminal device for sending the random leader sequence on a third random access resource is different from a fourth value of power adopted by the terminal device for sending the random leader sequence on a fourth random access resource, wherein the time domain positions of the third random access resource and the fourth random access resource are the same, and the frequency domain positions of the third random access resource and the fourth random access resource belong to different frequency domain sets.

4. The method according to any one of claims 1 to 3, wherein the determining, by the terminal device, the power for transmitting the random preamble sequence according to the location information of the first resource comprises:

the terminal equipment determines the receiving power of a random access preamble target according to the position information of the first resource; or the terminal device determines a first power parameter according to the position information of the first resource, wherein the first power parameter is one of a random preamble target receiving initial power, a power offset value related to a random preamble format, or a power ramp value related to a random preamble sending frequency; the terminal equipment determines the random access preamble target receiving power according to the first power parameter;

and the terminal equipment determines the power for sending the random preamble sequence according to the random access preamble target receiving power, wherein the power is the smaller of the sum of the random access preamble target receiving power and the path loss determined by the terminal equipment and the maximum sending power of the terminal equipment.

5. The method according to any one of claims 1 to 3, wherein the determining, by the terminal device, the power for transmitting the random preamble sequence according to the location information of the first resource comprises:

the terminal equipment determines a first power offset parameter according to the position information of the first resource;

the terminal equipment determines the power for sending the random preamble sequence according to the first power offset parameter, wherein the power is the smaller of the sum of the first power offset parameter and a second power parameter and the maximum sending power of the terminal equipment, and the second power parameter comprises the target receiving power of random access preamble and the path loss determined by the terminal equipment;

or,

the terminal equipment determines a second power offset parameter according to the position information of the first resource;

the terminal equipment determines random access preamble target receiving power according to the second power offset parameter, wherein the random access preamble target receiving power is the sum of the second power offset parameter and a third power parameter, and the third power parameter comprises random preamble target receiving initial power, a power offset value related to a random preamble format and a power ramp-up value related to the random preamble sending times;

the terminal equipment determines the power for sending the random leader sequence according to the random access leader target receiving power;

or,

the terminal equipment determines a third power offset parameter according to the position information of the first resource;

the terminal equipment determines a fourth power parameter according to the third power offset parameter, wherein the fourth power parameter is one of a random preamble target receiving initial power, a power offset value related to a random preamble format or a power ramp value related to the sending random preamble times;

and the terminal equipment determines the receiving power of a random access preamble target according to the fourth power parameter, and determines the power for sending the random preamble sequence according to the receiving power of the random access preamble target.

6. The method according to claim 4 or 5,

the first value of the random access leading target receiving power corresponding to the first random access resource of the terminal equipment is larger than the second value of the random access leading target receiving power corresponding to the second random access resource; or,

the first value of the first power parameter corresponding to the first random access resource of the terminal equipment is larger than the second value of the first power parameter corresponding to the second random access resource; or,

the first value of the first power offset parameter corresponding to the first random access resource of the terminal equipment is larger than the second value of the first power offset parameter corresponding to the second random access resource; or,

the first value of the second power offset parameter corresponding to the first random access resource of the terminal equipment is larger than the second value of the second power offset parameter corresponding to the second random access resource; or,

the first value of the third power offset parameter corresponding to the first random access resource of the terminal equipment is larger than the second value of the third power offset parameter corresponding to the second random access resource;

the distance between the time domain position of the first random access resource and the first position is smaller than the distance between the time domain position of the second random access resource and the first position, the first position is a conversion position from downlink transmission resources to uplink transmission resources, and the first random access resource and the second random access resource are in the same conversion period from downlink resources to uplink resources.

7. The method according to any of claims 1-6, wherein the time domain location information comprises:

the time deviation information of the time domain time period of the random access resource relative to the reference time point, or the uplink time unit number of the time unit corresponding to the random access resource in a downlink resource-uplink resource conversion period, or the resource number of the random access resource in a downlink resource-uplink resource conversion period.

8. The method according to any of claims 1-6, wherein the frequency domain location information comprises:

the position information of the frequency domain resource unit occupied by the random access resource, or the resource number of the random access resource in the frequency domain.

9. A method of power control, comprising:

the network equipment determines a power offset parameter; the power deviation parameter is used for determining one of power for sending a random leader sequence, random access leader target receiving power, random leader target receiving initial power, a power deviation value related to a random leader format or a power climbing value related to the number of times of sending the random leader; the power for sending the random leader sequence comprises random access leader target receiving power and path loss determined by terminal equipment, and the random access leader target receiving power comprises random leader target receiving initial power, a power deviation value related to a random leader format and a power ascending value related to the sending random leader times; the power offset parameter is related to position information of random access resources for sending random preamble sequences, and the position information comprises at least one of time domain position information and frequency domain position information;

and the network equipment sends the power offset parameter to terminal equipment.

10. The method of claim 9,

the first value of the power offset parameter corresponding to the first time domain position is larger than the second value of the power offset parameter corresponding to the second time domain position, wherein the distance between the first time domain position and the first position is smaller than the distance between the second time domain position and the first position, and the first position is the conversion position from the downlink transmission resource to the uplink transmission resource.

11. The method according to claim 9 or 10,

the power offset parameters are different for different frequency domain locations.

12. The method according to any of claims 9-11, wherein the time domain location information comprises:

13. The method according to any of claims 9-11, wherein the frequency domain location information comprises:

14. A power control apparatus, comprising:

a processing module, configured to determine a first resource, where the first resource is a random access resource of a random preamble sequence to be sent;

the processing module is further configured to determine, according to location information of the first resource, power for transmitting the random preamble sequence, where the location information includes at least one of time domain location information and frequency domain location information;

a sending module, configured to send the random preamble sequence to a network device on the first resource by using the power.

15. The apparatus of claim 14,

the method comprises the steps that a first value of power adopted by terminal equipment for sending a random leader sequence on a first random access resource is larger than a second value of power adopted by sending the random leader sequence on a second random access resource, wherein the distance between the time domain position of the first random access resource and a first position is smaller than the distance between the time domain position of the second random access resource and the first position, the first position is a conversion position from a downlink transmission resource to an uplink transmission resource, and the first random access resource and the second random access resource are in the same conversion period from the downlink resource to the uplink resource.

16. The apparatus of claim 14 or 15,

17. The apparatus according to any one of claims 14 to 16,

the processing module is specifically configured to:

determining the random access preamble target receiving power according to the position information of the first resource; or determining a first power parameter according to the position information of the first resource, wherein the first power parameter is one of a random preamble target receiving initial power, a random preamble format-related power offset value or a random preamble frequency-transmitting-related power ramp value; determining the target receiving power of the random access preamble according to the first power parameter;

the processing module is further configured to determine a power for transmitting the random preamble sequence according to the random access preamble target received power, where the power is a smaller one of a sum of the random access preamble target received power and a path loss determined by the terminal device and a maximum transmit power of the terminal device.

18. The apparatus according to any one of claims 14 to 16, wherein the processing module is specifically configured to:

determining a first power offset parameter according to the position information of the first resource;

determining the power for sending the random preamble sequence according to the first power offset parameter, wherein the power is the smaller of the sum of the first power offset parameter and a second power parameter and the maximum sending power of the terminal device, and the second power parameter comprises the target receiving power of random access preamble and the path loss determined by the terminal device;

or,

determining a second power offset parameter according to the position information of the first resource;

determining random access preamble target receiving power according to the second power offset parameter, wherein the random access preamble target receiving power is the sum of the second power offset parameter and a third power parameter, and the third power parameter comprises random preamble target receiving initial power, a random preamble format-related power offset value and a random preamble frequency-transmitting-related power ramp value;

determining the power for sending the random leader sequence according to the random access leader target receiving power;

or,

determining a third power offset parameter according to the position information of the first resource;

determining a fourth power parameter according to the third power offset parameter, wherein the fourth power parameter is one of a random preamble target receiving initial power, a power offset value related to a random preamble format or a power ramp value related to the number of times of sending a random preamble;

and determining the receiving power of a random access preamble target according to the fourth power parameter, and determining the power for sending the random preamble sequence according to the receiving power of the random access preamble target.

19. The apparatus of claim 17 or 18,

20. The apparatus of any one of claims 14-19, wherein the time domain location information comprises:

21. The apparatus according to any of claims 14-19, wherein the frequency domain location information comprises:

22. A power control apparatus, comprising:

a processing module for determining a power offset parameter; the power deviation parameter is used for determining one of power for sending a random leader sequence, random access leader target receiving power, random leader target receiving initial power, a power deviation value related to a random leader format or a power climbing value related to the number of times of sending the random leader; the power for sending the random leader sequence comprises random access leader target receiving power and path loss determined by terminal equipment, and the random access leader target receiving power comprises random leader target receiving initial power, a power deviation value related to a random leader format and a power ascending value related to the sending random leader times; the power offset parameter is related to position information of random access resources for sending random preamble sequences, and the position information comprises at least one of time domain position information and frequency domain position information;

and the sending module is used for sending the power offset parameter to the terminal equipment.

23. The apparatus of claim 22,

24. The apparatus of claim 22 or 23,

25. The apparatus of any one of claims 22-24, wherein the time domain location information comprises:

26. The apparatus of any of claims 22-24, wherein the frequency domain location information comprises: