CN111989955B - Power adjustment method and related equipment - Google Patents

Power adjustment method and related equipment Download PDF

Info

Publication number
CN111989955B
CN111989955B CN201880092564.9A CN201880092564A CN111989955B CN 111989955 B CN111989955 B CN 111989955B CN 201880092564 A CN201880092564 A CN 201880092564A CN 111989955 B CN111989955 B CN 111989955B
Authority
CN
China
Prior art keywords
terminal device
determining
network
coverage level
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201880092564.9A
Other languages
Chinese (zh)
Other versions
CN111989955A (en
Inventor
何朗
陈冬明
曾龙基
宁磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of CN111989955A publication Critical patent/CN111989955A/en
Application granted granted Critical
Publication of CN111989955B publication Critical patent/CN111989955B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application provides a power adjustment method and related equipment, wherein the method comprises the following steps: determining whether a current network is in a congested state; when the current network is in a congestion state, measuring the reference signal receiving power of the terminal equipment; and determining the PRACH transmitting power and the PUSCH transmitting power according to the reference signal receiving power measured by the terminal equipment. By implementing the method, when the network is in a congestion state, the interference to other users can be avoided to a certain extent, and the power consumption of the terminal equipment is reduced.

Description

Power adjustment method and related equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a power adjustment method and a related device.
Background
In a mobile communication network, multiple users often need to share channel resources, and the signal transmission power of one user may not only affect the message transmission strength of the user, but also may generate interference to other users, affecting the communication quality of other users, so the power control technique in mobile communication is very important.
The third Generation Partnership Project (3 GPP) R13 protocol specifies that a terminal device can adjust Physical Random Access Channel (PRACH) transmission power and Physical Uplink Shared Channel (PUSCH) transmission power according to Access coverage level and Access attempt number. Different access coverage grades can resist different degrees of channel attenuation, and the corresponding PUSCH repetition times can be selected between the network equipment and the terminal equipment according to the access coverage grades.
For example, please refer to fig. 1, which is a diagram illustrating a random access procedure of a terminal device. In 101, a terminal device first initiates a random access request to a network device at a current access coverage level. In 102, the terminal device determines whether response information of the network device is received; if no response message is received from the network device within a certain time, it is determined in 103 whether the current access attempt number reaches the maximum access attempt number corresponding to the current access coverage level. If the maximum access attempt times corresponding to the current access coverage grade are not reached, step 101 may be executed again, and a random access request is initiated on the current access coverage grade by the current PUSCH repetition times; if the maximum access attempt number corresponding to the current access coverage class is reached, it may be determined whether the current access coverage class is a preset maximum access coverage class in 104. If the terminal device judges that the current access coverage grade is not the preset maximum access coverage grade, step 105 can be executed, an access coverage grade is lifted on the basis of the current access coverage grade, and step 101 is executed again by the lifted access coverage grade; and if the response of the network equipment is not received yet after the maximum access attempt times of the preset maximum access coverage level are reached, the random access fails.
The protocol also provides that when the access coverage grade of the terminal equipment is greater than 0, the terminal equipment fixedly uses the maximum PRACH transmitting power and does not perform power adjustment; and when the PUSCH repetition times is more than or equal to 2, the terminal equipment fixedly uses the maximum PUSCH transmission power. Then, if the number of terminal devices currently accessed to the network is too many, and the access coverage level of the terminal device is increased and the number of times of PUSCH repetition is increased due to insufficient channel resources in the network, the terminal device needs to transmit signals by using the maximum PRACH transmission power and the maximum PUSCH transmission power, which increases interference to other users and correspondingly increases the power consumption of the terminal device.
Disclosure of Invention
The technical problem to be solved by the application is how to avoid interference to other users to a certain extent, and reduce the power consumption of the terminal equipment.
In a first aspect, the present application provides a power adjustment method, which may be applied to a terminal device, and the method may include: determining whether a current network where a terminal device is located is in a congestion state, measuring current Reference Signal Receiving Power (RSRP) of the terminal device when the current network is in the congestion state, and determining PRACH (physical random access channel) transmitting Power and PUSCH (physical uplink shared channel) transmitting Power according to the RSRP measured by the terminal device.
Due to the fact that the probability that the terminal equipment sends signals by using the maximum PRACH transmission power and the maximum PUSCH transmission power is increased once the random access of the terminal equipment fails under the condition of network congestion, by implementing the method provided by the first aspect, the terminal equipment can automatically adjust the PRACH transmission power and the PUSCH transmission power according to the actually measured RSRP value under the condition that the current network is determined to be in the congestion state, the maximum transmission power is not directly adopted, the probability that the terminal equipment sends signals by adopting the maximum transmission power is reduced to a certain extent, meanwhile, the interference to other users is reduced, and the power consumption overhead of the terminal equipment is reduced.
As a possible implementation manner, the terminal device determines the PRACH transmission power according to the measured RSRP, or determines the current access coverage level according to the RSRP measured by the terminal device, and then determines the PRACH transmission power according to the current access coverage level and the RSRP.
By implementing the feasible implementation manner, when the network is in a congestion state, the access coverage level determined by the terminal device by using the RSRP is irrelevant to the access attempt times, and cannot be increased along with the increase of the access attempt times, so that the stability of the access coverage level is improved, and meanwhile, the opportunity that the terminal device sends signals by adopting the maximum transmission power can be reduced without increasing the access coverage level.
As a possible implementation manner, the determining, by the terminal device, the current access coverage level according to the reference signal received power measured by the terminal device may be: when the reference signal received power measured by the terminal equipment is smaller than a first preset power threshold, determining that the current access coverage level is a first coverage level; when the reference signal received power measured by the terminal equipment is greater than or equal to a first preset power threshold and less than a second preset power threshold, determining that the current access coverage level is a second coverage level; and when the reference signal received power measured by the terminal equipment is greater than or equal to a second preset power threshold, determining that the current access coverage level is a third coverage level. Wherein the first coverage level is less than the second coverage level, and the second coverage level is less than the third coverage level.
Therefore, by implementing the feasible implementation manner, the terminal device divides the access coverage grade into three coverage grades by using the preset threshold values of the two reference signal receiving powers, and the terminal device can accurately judge the current access grade of the terminal device according to the corresponding relation between the reference signal receiving power and the access coverage grade, so that the efficiency of the terminal device for determining the current access grade is improved.
As a feasible implementation manner, the determining, by the terminal device, the PRACH transmission power according to the current access coverage level and the reference signal received power measured by the terminal device may be: and when the current access coverage level is the first coverage level or the second coverage level, determining the PRACH transmitting power according to the reference signal receiving power measured by the terminal equipment.
Because the PRACH transmitting power determined according to the reference signal receiving power measured by the terminal equipment can be less than or equal to the maximum PRACH transmitting power, if the current access coverage level of the terminal equipment is the first coverage level or the second coverage level, the signal coverage capability of the terminal equipment can be indicated to be stronger, even if the PRACH transmitting power smaller than the maximum PRACH transmitting power is adopted, the signal coverage can be ensured, and meanwhile, the power consumption expense of the terminal equipment can be reduced.
As a possible implementation manner, if the current access coverage level is the third coverage level, the terminal device may determine that the PRACH transmission power is the preset maximum PRACH transmission power.
It can be seen that, by implementing the above feasible implementation manner, if the current access coverage level is the third coverage level, it may indicate that the signal coverage capability of the terminal device is weak, and in order to ensure the coverage range of the signal, the terminal device may transmit the signal by using the preset maximum PRACH transmission power at this time, so as to ensure effective transmission of the signal.
As a possible implementation, the network device may determine the PUSCH repetition number by detecting the strength value of the PRACH channel. The terminal device may receive the number of times of repeating the PUSCH transmitted by the network device, and determine the PUSCH transmission power according to the reference signal received power measured by the terminal device, where the number of times of repeating the PUSCH transmitted by the network device may be: and determining the PUSCH transmitting power according to the repeated times of the PUSCH and the reference signal receiving power measured by the terminal equipment.
Because the number of repetitions of the PUSCH is determined according to the strength value of the PRACH channel, regardless of the access coverage level, by implementing the above feasible implementation, when the network is in a congested state, the number of repetitions of the PUSCH does not change with the increase of the access coverage level, thereby reducing the chance that the terminal device transmits a signal with the maximum transmission power to a certain extent, and simultaneously reducing interference to other users and power consumption overhead of the terminal device itself.
As a possible implementation, the determining, by the terminal device, that the current network is in the congestion state includes: receiving a congestion indication parameter sent by network equipment; and determining whether the current network is in a congestion state or not according to the congestion indication parameter issued by the network equipment.
Therefore, by implementing the feasible implementation manner, the terminal device determines whether the current network is in the congestion state or not through the congestion indication parameter sent by the network device, and the accuracy of judging the network state can be improved.
As a possible implementation, the congestion indication parameter may include a backoff index in the random access response, where the backoff index is used to indicate a waiting time for the terminal device to perform random access. The determining whether the current network is in the congestion state according to the congestion indication parameter issued by the network device may be: if the backoff index in the random access response issued by the network equipment is not zero, determining that the current network state is in a congestion state; and if the backoff index in the random access response issued by the network equipment is zero, determining that the current network state is not in the congestion state.
As a possible implementation, the congestion indication parameter includes an access barring function parameter in a system message; the determining that the current network is in the congestion state according to the congestion indication parameter of the network device includes: and if the access prohibition function parameter in the system message is in the starting state, determining that the current network is in the congestion state.
As a possible implementation, the terminal device may determine the current access attempt number and the current access coverage level when determining that the network is in the congestion state.
In a second aspect, a terminal device is provided, where the terminal device has a function of implementing a behavior of the terminal device in the first aspect or a possible implementation manner of the first aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above. The module may be software and/or hardware. Based on the same inventive concept, as the principle and the beneficial effects of the terminal device for solving the problems can refer to the possible method embodiments of the first aspect and the beneficial effects brought thereby, the implementation of the terminal device can refer to the possible method embodiments of the first aspect and the first aspect, and repeated details are omitted.
In a third aspect, a terminal device is provided, which includes: a memory for storing one or more programs; the processor is configured to call the program stored in the memory to implement the scheme in the method design of the first aspect, and for the implementation and the beneficial effects of the terminal device for solving the problem, reference may be made to the implementation and the beneficial effects of each possible method of the first aspect and the first aspect, and repeated details are omitted.
In a fourth aspect, a communication apparatus is provided, where the communication apparatus includes a processing element and a storage element, where the storage element is configured to store a program, and when the program is called by the processing element, the solution in the method design according to the first aspect may be implemented, and for implementation and beneficial effects of the terminal device for solving the problem, reference may be made to implementation and beneficial effects of each possible method according to the first aspect and the first aspect, and repeated details are omitted.
In a fifth aspect, a computer-readable storage medium is provided, where the computer-readable storage medium stores a computer program, where the computer program includes program instructions, and the program instructions, when executed by a processor, cause the processor to perform the method of the first aspect and the embodiments and advantages of each possible method of the first aspect, and repeated details are not repeated.
Drawings
Fig. 1 is a flowchart illustrating a random access process of a terminal device according to an embodiment of the present application;
FIG. 2 is a diagram of a system architecture for power regulation according to an embodiment of the present application;
fig. 3 is a schematic diagram of an uplink channel mapping provided in the present application;
FIG. 4 is a schematic diagram illustrating a scenario of a protocol layer of a radio interface provided in the present application;
FIG. 5 is a flow chart illustrating a power adjustment method provided herein;
FIG. 6 is a schematic flow chart diagram of another power adjustment method provided herein;
FIG. 7 is a schematic flow chart diagram illustrating another power adjustment method provided herein;
FIG. 8 is a schematic diagram of a power regulation structure provided herein;
fig. 9 is a schematic structural diagram of a terminal device provided in the present application;
fig. 10 is a schematic structural diagram of a network device provided in the present application.
Detailed Description
The following description will be made with reference to the drawings in the embodiments of the present application.
In order to better understand a power adjustment method and related devices provided in the embodiments of the present application, a network architecture related to the present application is described below.
Fig. 2 is a diagram of a system architecture for power adjustment according to an embodiment of the present application. The system may not be limited to a 3G mobile Communication system, a Long Term Evolution (LTE) mobile Communication system, a future-Evolution fifth-Generation mobile Communication (5G) system, a new air interface (NR) system, a Cellular Internet of Things (CIOT) system, and a subsequent Evolution system, wherein the CIOT system includes, but is not limited to, a Narrowband Internet of Things (navrowland Internet of Things, NB-IoT) and a Machine Type Communication (MTC) system. As shown in fig. 2, the system may include: one or more terminal devices 201, network devices 202. Wherein:
the terminal device 201 may be a terminal that resides in a cell 203. In one embodiment, terminal device 201 may be distributed throughout the system. In some embodiments of the present application, the terminal device 201 may be, for example, a mobile device, a mobile station (mobile station), a mobile unit (mobile unit), an M2M terminal, a wireless unit, a remote unit, a user agent, a mobile client, a Cellular Internet of Things (CIoT) terminal, and the like.
In one embodiment, the terminal device 201 may be operable to communicate with the network device 202 via the wireless interface 204.
The network device 202 may be a base station, which may be configured to communicate with one or more terminal devices and may also be configured to communicate with one or more base stations having some terminal functionality (e.g., communication between a macro base station and a micro base station, such as an access point). The Base Station may be a Base Transceiver Station (BTS) in a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, an evolved Node B (eNodeB) in an LTE system, and a Base Station in a 5G system or a new air interface (NR) system. In addition, the base station may also be an Access Point (AP), a Transmission Point (TRP), a Central Unit (CU), or other network entities, and may include some or all of the functions of the above network entities.
In particular, the network device 202 may be adapted to communicate with the terminal 203 via the wireless interface 204 under the control of a network device controller (not shown). In some embodiments, the network device controller may be part of the core network or may be integrated into the network device 201.
Fig. 3 shows an uplink channel map corresponding to the radio interface 204 (i.e. the radio interface between the terminal device 202 and the network device 201) in fig. 2. Fig. 4 shows radio interface protocol layers, and an interface between the radio interface protocol layers may be expressed as a channel, and may specifically include: logical channels, transport channels, and physical channels. Wherein:
(1) logical channel: the logical channel describes the type of information, i.e. defines what information is transmitted. An interface between a Media Access Control (MAC) layer and a Radio Link Control (RLC) layer is a logical channel. The MAC layer provides services to the RLC layer through logical channels.
As shown in fig. 3, the logical channels are classified into 2 types: logical control channels and logical traffic channels. The uplink logical control channel is used for transmitting control plane information, and may include: CCCH (Common Control Channel), DCCH (Dedicated Control Channel). The uplink logical traffic channel is used for transmitting user plane information, and may include: DTCH (Dedicated Traffic Channel), etc.
(2) Transmission channel: the transmission channel describes the way in which information is transmitted, i.e. defines how information is transmitted. The interface between the Physical Layer (PHY) and the Medium Access Control (MAC) Layer is a transport channel. The PHY layer provides services to the MAC layer through transport channels. The transmission channels may be generally classified according to the manner in which signals are transmitted over the radio interface, such as channel coding strategy, modulation method, and antenna mapping.
As shown in fig. 3, the uplink transmission channel may include: UL-SCH (Uplink Shared Channel), RACH (Random Access Channel).
(3) Physical channel: used by the physical layer for the transmission of specific signals. The physical channel corresponds to a Resource Element (RE) set carrying higher layer information. The basic entities constituting the physical channel are a Resource factor (RE) and a Resource Block (RB).
As shown in fig. 3, the uplink physical channels may include: PUSCH (Physical Uplink Shared Channel), PRACH (Physical Random Access Channel).
The PRACH channel is an access channel in which the terminal device 201 starts to initiate a random access Request, and after receiving the response information of the network device 202, the terminal device 201 sends an RRC Connection Request message (RRC Connection Request) on the PUSCH channel according to the information indicated by the network device 202. The PUSCH channel may be time-shared by multiple users, or the channel may have a short duration.
In this application, the uplink power control of the terminal device 201 may include two parts: power control of PUSCH and power control of PRACH. The purpose of the power control of the PRACH and the power control of the PUSCH is to transmit a random access signal with as low power as possible under the condition of ensuring the success rate of random access of the terminal device, reduce interference to other users, save power for the terminal device, and reduce power consumption.
It should be noted that the system shown in fig. 2 is only for more clearly illustrating the technical solution of the present application, and does not constitute a limitation to the present application, and as a person having ordinary skill in the art knows, with the evolution of network architecture and the emergence of new service scenarios, the technical solution provided in the present application is also applicable to similar technical problems.
The following first presents the general inventive principles of the present application.
The main inventive principles of the present application may include: the terminal device and the network device need to establish a communication link by performing a random access procedure, which may refer to a procedure from the terminal device sending a random access signal (random access request) to the network device establishing a basic signaling connection, and is usually the last step of establishing a connection between the terminal device and the network device. The R13 protocol stipulates that when the terminal equipment carries out the random access process, if the access coverage level of the terminal equipment is greater than 0, the terminal equipment fixedly uses the maximum PRACH transmitting power and does not carry out power adjustment any more; and when the PUSCH repetition times is more than or equal to 2, the terminal equipment fixedly uses the maximum PUSCH transmission power. Then, if the number of terminal devices currently accessed to the network is too many, and the access coverage level of the terminal device is increased and the number of times of PUSCH repetition is increased due to insufficient channel resources in the network, the terminal device needs to transmit signals by using the maximum PRACH transmission power and the maximum PUSCH transmission power, which increases interference to other users and correspondingly increases the power consumption of the terminal device.
In order to solve the above-mentioned drawbacks, the present application provides a power adjustment method and related apparatus based on the system shown in fig. 2. The terminal device may first determine whether the current network is in a congestion state, and if the current network is in the congestion state, calculate PRACH transmission Power and PUSCH transmission Power according to Reference Signal Receiving Power (RSRP) measured actually.
The RSRP actually measured by the terminal device may be used to indicate the signal coverage strength between the network device and the terminal device, and may also be used to measure the path loss condition, so that the terminal device may select the transmission power according to the actual coverage, and the selected transmission power may be less than or equal to the maximum transmission power, thereby reducing the chance of sending signals by using the maximum PRACH transmission power and the maximum PUSCH transmission power due to congestion to a certain extent, and simultaneously saving air interface resources and reducing interference to other devices.
For example, power control of PRACH transmit power is taken as an example. If the terminal device determines that the network is in a congestion state, the terminal device may indicate that the probability of the current terminal device failing to perform random access is high, the number of access attempts of the terminal device is high, and when the number of access attempts reaches a certain number, the terminal device most likely sends a signal by using the preset maximum PRACH transmission power and the maximum PUSCH transmission power. At this time, when the network is in a congestion state, the terminal device measures an RSRP value, and if the measured RSRP value is smaller than a preset threshold value RSRP1, the terminal device sets the access coverage level of the network device to 0, and further calculates a downlink path loss value (a difference between CRS signal power sent by the network device and CRS signal power received by the terminal device) according to the RSRP, and may calculate PRACH transmission power according to the downlink path loss value, and the calculated PRACH transmission power is smaller than or equal to the maximum PRACH transmission power. In this way, even if the random access fails, the number of access attempts is increased, as long as the RSRP value is not changed (the RSRP value may be related to the signal coverage strength, in some feasible embodiments, the relative position between the terminal device and the network device is not changed, and the RSRP value may not be changed), the access coverage level will not be increased, and the PRACH transmission power will not be increased, thereby avoiding the problem that the terminal device will raise the access coverage level and use the maximum PRACH transmission power when the number of access attempts reaches a certain degree. Meanwhile, the adopted PRACH transmitting power can be smaller than the maximum PRACH transmitting power, so that air interface resources are saved to a certain extent, and the interference to other equipment is reduced.
Similarly, the power control of the terminal device on the PUSCH transmission power may also reduce, to a certain extent, the chance of sending a signal by using the maximum PUSCH transmission power due to congestion, save air interface resources, and reduce interference caused to other devices, which is not described herein again.
It should be noted that the above examples are only for explaining the inventive principle of the present application and should not be construed as limiting.
It should be noted that the terminal device related to the present application may be a near point terminal device, where the near point terminal device refers to: and the terminal equipment is used for judging whether the distance value between the terminal equipment and the network equipment is smaller than or equal to a preset distance threshold value, wherein the preset distance threshold value can be specified by a protocol or can be specified by the network equipment and/or the terminal equipment. The network device can determine whether to send the congestion indication parameter to the corresponding terminal device through the identification of the far and near terminal devices.
Based on the above-mentioned main inventive principle, the general flow of the power adjustment method provided in the present application is described below. Fig. 5 shows an interaction flow implemented by the power adjustment method provided by the present application on the network device side and the terminal device side, and fig. 6 and fig. 7 show a specific flow implemented by the power adjustment method provided by the present application on the terminal device side.
As shown in fig. 5, in the random access procedure, the power adjustment method provided by the present application may include:
501. and the network equipment identifies the far and near terminal equipment and determines the near point terminal equipment.
In one embodiment, the network device may perform PRACH signal strength detection, and distinguish between the near and far terminal devices according to the detected PRACH strength value. For example, if the PRACH signal strength value of the terminal device is greater than a first preset strength threshold, it may be determined that the terminal device is a near point terminal device; if the PRACH signal strength value of the terminal device is greater than a second preset strength threshold and less than or equal to the first preset strength threshold, it may be determined that the terminal device is a near-mid point terminal device; and if the PRACH signal strength value of the terminal equipment is less than or equal to the second preset parameter threshold value, determining that the terminal equipment is far-point terminal equipment.
In one embodiment, a network device may obtain a channel quality parameter (CQI) of a terminal device and determine a location relationship between the terminal device and the network device according to the CQI. If the CQI of the terminal device is greater than the first preset parameter threshold, it may be determined that the distance value between the terminal device and the network device is less than the first preset distance threshold, that is, the terminal device is a near point terminal device.
If the channel quality parameter of the terminal device is greater than a second preset parameter threshold and less than or equal to the first preset parameter threshold, it may be determined that the distance value between the terminal device and the network device is greater than or equal to the first preset distance threshold and less than or equal to a second preset distance threshold, that is, the terminal device is a near-and-mid point terminal device; if the channel quality parameter of the terminal device is less than or equal to the second preset parameter threshold, it is determined that the distance value between the terminal device and the network device is greater than or equal to the second preset distance threshold, that is, the terminal device is a far-point terminal device.
In one embodiment, the network device may also determine the near point terminal device according to the positioning. For example, the network device may measure the uplink pilot signals of each terminal device, obtain Time of Arrival (TOA) or Time Difference of Arrival (TDOA) of the uplink pilot signals of different terminal devices, calculate the position of each terminal device according to the measurement result and by combining the position coordinates of the network device itself, thereby estimating the distance between each terminal device and the network device, and determine the terminal device with the distance value smaller than the first preset distance threshold as the near point terminal device.
Similarly, the network device may determine that the terminal device whose distance value from the network device is greater than or equal to the first preset distance threshold and less than or equal to the second preset distance threshold is a midpoint terminal device; and the terminal equipment with the distance value between the terminal equipment and the network equipment being greater than or equal to the second preset distance threshold value is far-point terminal equipment.
It should be noted that the manner in which the network device identifies the near-point terminal device may also be other manners, including but not limited to the identification manners specified by the LTE protocol, the 5G protocol, and the like, which is not limited in this embodiment of the present invention.
502. And the network equipment sends the congestion indication parameter to the determined near point terminal equipment.
503. The terminal device (one of the near point terminal devices) determines whether the current network is in a congested state.
In an embodiment, the terminal device may determine whether the current network is in a congestion state according to a congestion indication parameter issued by the network device.
Specifically, after receiving the congestion indication parameter sent by the network device, the terminal device determines whether the current network is in a congestion state according to the congestion indication parameter sent by the network device.
In an embodiment, the congestion indication parameter may be a backoff index (backoff index) in a Random Access Response (RAR), and the backoff index may be used to indicate a waiting duration for the terminal device to perform Random Access, that is, a duration for waiting to transmit a Random Access signal. If the backoff index of the random access response issued by the network device is 0, it can indicate that the terminal device can send the random access signal without queuing, that is, the current network is not in a congestion state; if the backoff index of the random access response issued by the network device is not 0, it may indicate that the terminal device needs to wait in a queue to send the random access signal, that is, the current network is in a congestion state.
In an embodiment, the congestion indication parameter may also be an Access Barring (AB) function parameter in the system message, and the Access Barring function parameter may be used to indicate whether the network device allows the terminal device to perform random Access. For example, if the AB function parameter in the system message 14(SIB 14) is in the activated state, it may indicate that the network device does not currently allow the terminal device to perform random access, and may further indicate that the current network is in the congested state; if the AB function parameter in SIB 14 is in an inactivated state, it may indicate that the network device currently allows the terminal device to perform random access, and may further indicate that the current network is not in a congested state.
In one embodiment, the congestion indication parameter may also be a parameter that is used directly in system messages to indicate whether the network is in congestion or not. For example, if the network is in a congested state, the network device may place a congestion indication parameter in a system message in an activated state; if the network is not in a congested state, the network device may place the congestion indication parameter in the system message in an unactivated state.
504. And when the current network is in a congestion state, the terminal equipment measures the RSRP of the terminal equipment.
In one embodiment, if the terminal device determines that the current network is in a congested state, the signal power of a received Cell-specific reference signal (CRS) may be measured, and the power of the received CRS signal is RSRP, which may be defined as an average of linear powers at resource locations carrying CRS signals within a measurement bandwidth. The RSRP value may be used for the radio signal strength, i.e. the actual coverage situation of the downlink signal. In some possible embodiments, the RSRP value is larger when the terminal device and the network device are closer, and the RSRP value is smaller when the terminal device and the network device are farther.
It should be noted that, the manner of measuring RSRP in the present application includes, but is not limited to, the manner of measuring RSRP involved in LTE system, CIOT system, and 5G system, and is not limited herein.
505. And determining the PRACH transmission power and the PUSCH transmission power according to the RSRP.
In one embodiment, the network device may calculate the PRACH transmit power and the PUSCH transmit power by RSRP.
In one embodiment, the network device may determine a current access coverage level through RSRP, and determine PRACH transmission power according to the current access coverage level.
In one embodiment, the terminal device may further receive the number of repetitions of the PUSCH transmitted by the network device, where the number of repetitions of the PUSCH is determined by the network device according to the strength value of the PRACH channel, and the terminal device may determine the PUSCH transmission power by the number of repetitions of the PUSCH and the RSRP.
In one embodiment, the terminal device may transmit the random access signal at the determined power after determining the sum of the PUSCH transmission power and the PRACH transmission power.
In an embodiment, the random access signal may include a random access preamble, and the terminal device may select the random access preamble, or the network device may designate the random access preamble, which is not limited in this embodiment of the present invention.
It can be seen that, in the embodiment of the present invention, a network device issues a congestion indication parameter according to a current network status, a terminal device determines whether a current network is in a congestion state according to the congestion indication parameter, and if so, selects PRACH transmission power and PUSCH transmission power according to actually measured RSRP, thereby avoiding that a coverage level and a repetition number are raised when the number of access attempts of the terminal device reaches a certain degree, and thus, the problem of transmitting signals using the maximum PRACH transmission power and the maximum PUSCH transmission power is solved, the chance of the terminal device adopting high power to transmit signals is reduced to a certain degree, interference to other terminal devices is reduced, and meanwhile, the power consumption of the terminal device is also saved.
Fig. 6 is a schematic flow chart of the power adjustment method provided in the present application on the terminal device side. Specifically, fig. 6 shows an implementation manner of determining, by a terminal device, PUSCH transmission power and PRACH transmission power according to RSRP, where the implementation manner may include:
601. and the terminal equipment determines the current access coverage grade according to the RSRP measured by the terminal equipment.
It should be noted that the access coverage level may be a differentiated identifier for different coverage areas of the cell, different access coverage levels may resist different degrees of channel attenuation, and the network device and the terminal device may select corresponding PUSCH repetition times and configure different PRACH channel resources according to the access coverage level.
In one embodiment, the determining, by the terminal device, a current access coverage level according to RSRP measured by the terminal device may include: when the reference signal received power measured by the terminal equipment is smaller than a first preset power threshold, determining that the current access coverage level is a first coverage level; when the reference signal received power measured by the terminal equipment is greater than or equal to a first preset power threshold and less than a second preset power threshold, determining that the current access coverage level is a second coverage level; when the reference signal received power measured by the terminal equipment is greater than or equal to a second preset power threshold, determining that the current access coverage level is a third coverage level; wherein the first coverage level is less than the second coverage level, and the second coverage level is less than the third coverage level.
For example, the terminal device may preset two RSRP threshold values: RSRP1 (i.e., a first preset power threshold) and RSRP2 (i.e., a second preset power threshold). The UE selects a coverage level of 0 (i.e., a first coverage level) when the measured RSRP < RSRP1, selects a coverage level of 1 (i.e., a second coverage level) when the measured RSRP1 ≦ RSRP < RSRP2, and selects a coverage level of 2 (i.e., a third coverage level) when the measured RSRP > - < RSRP 2.
602. And the terminal equipment determines the PRACH transmitting power according to the current access coverage level and the RSRP measured by the terminal equipment.
In one embodiment, the determining, by the terminal device, the PRACH transmission power according to the current access coverage level and an RSRP measured by the terminal device includes: and when the current access coverage level is the first coverage level or the second coverage level, determining the PRACH transmission power according to the RSRP measured by the terminal equipment.
For example, if the current access coverage level is a coverage level 0 (i.e., a first coverage level), the terminal device may estimate a downlink path loss value according to RSRP, and may further determine PRACH transmission power, where the following calculation formula may be referred to for determining the PRACH transmission power:
PPRACH＝min{PCMAX，NarrowBand_Preamble_Received_Target_Power+PL}_[dBm](formula 1)
Wherein, PCMAXAnd presetting the maximum transmitting power for the terminal equipment. The method comprises the steps that the NarrowBand _ Preamble _ Received _ Target _ Power is a Target Power level preset by network equipment when the Preamble detection performance is met; PL is the downlink path loss value estimated by the terminal device, obtained by RSRP measurement value and the transmit power of the CRS signal, and in one embodiment, the terminal device may obtain these two parameter values by a system message.
In one embodiment, the PRACH transmission power is determined to be a preset maximum PRACH transmission power if the current access coverage level is a third coverage level.
For example, if the current access coverage level is 2, the terminal device may use PCMAX (i.e., a preset maximum PRACH transmission power) as the transmission power on the PRACH channel in order to ensure the signal coverage capability to a certain extent, and does not perform adjustment.
603. And the terminal equipment determines the PUSCH transmitting power according to the repeated times of the PUSCH and the RSRP measured by the terminal equipment.
Note that the number of repetitions of the PUSCH may be the number of copies of the same data transmitted through the PUSCH channel in one data transmission. For example, if the data is copied 2 times in one PUSCH transmission, the number of repetitions of the PUSCH is 2.
In an embodiment, the network device may detect the strength value of the PRACH channel in real time, determine the number of repetitions of the PUSCH according to the strength value of the PRACH channel, and send the determined repetitions to the terminal device through signaling or system messages.
For example, if the strength value of the PRACH channel is greater than the first preset strength threshold and less than or equal to the preset third strength threshold, the network device may determine that the number of repetitions of the PUSCH is 2, if the strength value of the PRACH channel is greater than the preset third strength threshold and less than or equal to the fourth strength threshold, the number of repetitions of the PUSCH may be determined to be 1, and if the strength value of the PRACH channel is greater than the fourth strength threshold, the number of repetitions of the PUSCH may be determined to be 0.
In one embodiment, if the number of repetitions of the PUSCH is less than or equal to 2, the terminal device may estimate a downlink path loss value according to RSRP, and may determine PUSCH transmit power in (dBm) according to the following formula:
Figure GPA0000295270010000121
wherein i is a current time slot, c is a current serving cell of the terminal device, and PCMAX is a maximum PUSCH transmission power of the UE. MPUSCH，cTaking the value of 1/4 when the single carrier (single-tone) is 3.75K, taking the value of 1 when the single carrier (single-tone) is 15K, taking the value of the subcarrier (Multi-tone) as the number of the subcarriers, wherein the value range is {3, 6 and 12 }; PL is a downlink path loss value estimated by the UE, and is obtained by an rsrp (rs Received power) measurement value and a cellspicificreferencesignal transmission power, and in one embodiment, the UE obtains the two parameter values through a system message. PO_PUSCH，cThe received power level expected by the network equipment is determined by the network equipment, and the received power spectrum level expected by the network equipment when the PUSCH demodulation performance requirement is met is embodied; α is a path loss compensation factor.
In one embodiment, if the number of repetitions of the current PUSCH is greater than 2, the terminal device may fixedly use a preset maximum PUSCH transmission power as the current PUSCH transmission power in order to ensure signal coverage to some extent.
It can be seen that, in the embodiment of the present invention, after determining that a network is in a congestion state, a terminal device determines a current access coverage level according to an actually measured RSRP value, and further determines a current PRACH transmission power according to the current access coverage level and the RSRP, and the terminal device may determine the PUSCH transmission power by using the number of PUSCH repetitions determined by the signal strength of the PRACH and the RSRP. Therefore, the terminal equipment can select the transmitting power and the access coverage grade according to the actual coverage condition of the signal, the opportunity that the terminal equipment adopts the maximum PRACH transmitting power and the maximum PUSCH transmitting power to transmit the signal is reduced, meanwhile, even if the random access fails, the access attempt times are increased, the access coverage grade cannot be increased along with the increase of the PRACH transmitting power as long as the RSRP value is not changed, and the power consumption expense of the terminal equipment is saved.
Fig. 7 is a schematic flow chart of the power adjustment method provided in the present application on the terminal device side. Specifically, fig. 7 shows another implementation manner in which the terminal device determines the PUSCH transmission power and the PRACH transmission power according to RSRP, and the determination may include:
701. when the network is in a congestion state, the terminal equipment determines the PUSCH repetition times and the current access attempt times.
In one embodiment, after the random access fails, the terminal device may perform the access attempt again and record the current access attempt number.
In one embodiment, the terminal device may determine the number of PUSCH repetitions according to the strength value of the PRACH channel.
In an embodiment, the terminal device may also measure RSRP, determine a current access coverage level according to the RSRP, and further determine the number of PUSCH repetitions according to the current access coverage level.
702. And the terminal equipment calculates the PRACH transmitting power according to the RSRP, the PUSCH repetition times and the current access attempt times which are measured by the terminal equipment.
In one embodiment, for the PRACH channel, the terminal device may perform power control using equation 1:
PPRACH＝min{PCMAX，NarrowBand_Preamble_Received_Target_Power+PL}_[dBm](formula 1)
Wherein, PCMAXAnd presetting the maximum transmitting power for the terminal equipment. The NarrowBand _ Preamble _ Received _ Target _ Power is a Target Power level expected by the network equipment when the Preamble detection performance is met; PL is the downlink path loss value estimated by the terminal device, obtained by RSRP measurement value and the transmit power of the CRS signal, and in one embodiment, the terminal device may obtain these two parameter values by a system message.
In one embodiment, the narrow _ Preamble _ Received _ Target _ Power may be related to the number of access attempts and the number of PUSCH repetitions. For example, the navowband _ Preamble _ Received _ Target _ Power is the initial Received Target Power + (access attempt number-1) Power ramp step-10 log10(PUSCH repetition number), and the initial Received Target Power and the Power ramp step may be parameters pre-configured by the network device.
703. And the terminal equipment calculates the PUSCH transmitting power according to the RSRP measured by the terminal equipment.
In one embodiment, the terminal device may perform power control by using formula 2 without considering the number of repetitions when determining the PUSCH transmission power:
Figure GPA0000295270010000131
wherein i is a current time slot, c is a current serving cell of the terminal device, and PCMAX is a maximum PUSCH transmission power of the UE. MPUSCH，cTaking the value of 1/4 when the single carrier (single-tone) is 3.75K, taking the value of 1 when the single carrier (single-tone) is 15K, taking the value of the subcarrier (Multi-tone) as the number of the subcarriers, wherein the value range is {3, 6 and 12 }; PL is a downlink path loss value estimated by the UE, and is obtained by an rsrp (rs Received power) measurement value and a cellspicificreferencesignal transmission power, and in one embodiment, the UE obtains the two parameter values through a system message. PO_PUSCH，cThe received power level expected by the network equipment is determined by the network equipment, and the received power spectrum level expected by the network equipment when the PUSCH demodulation performance requirement is met is embodied; adjusted to a path loss compensation factor.
Therefore, in the embodiment of the invention, when the current network is in a congestion state, the repeated times of the PUSCH are not used as the condition whether the maximum PUSCH power transmission is adopted any more, and the power control of the PUSCH is decoupled from the repeated times; for the power control of the PRACH, the terminal equipment can comprehensively consider the RSRP, the access attempt times and the PUSCH repetition times to determine the PRACH transmitting power, the PRACH transmitting power is irrelevant to the access coverage level, the power control modes of the terminal equipment on the PRACH transmitting power and the PUSCH transmitting power can be enriched to a certain extent, meanwhile, the transmitting power determined by the power control method disclosed by the embodiment of the invention is less than or equal to the maximum transmitting power, when the network equipment is in a congestion state, the opportunity of transmitting signals by adopting the maximum transmitting power can be reduced to a certain extent, and the power consumption of the terminal equipment is saved.
Please refer to fig. 8, which is a schematic structural diagram of a terminal device according to the present application. The terminal device shown in fig. 8 may include:
a first determining module 801 is used to determine whether the current network is in a congested state.
A measuring module 802, configured to measure the reference signal received power of the terminal device when the current network is in a congestion state.
A second determining module 803, configured to determine PRACH transmitting power and PUSCH transmitting power according to the reference signal received power measured by the terminal device.
In an embodiment, the second determining module 803 is specifically configured to determine a current access coverage level according to the reference signal received power measured by the terminal device, and determine PRACH transmitting power according to the current access coverage level and the reference signal received power measured by the terminal device.
In an embodiment, the second determining module 803 is specifically configured to: when the reference signal received power measured by the terminal equipment is smaller than a first preset power threshold, determining that the current access coverage level is a first coverage level; when the reference signal received power measured by the terminal equipment is greater than or equal to a first preset power threshold and less than a second preset power threshold, determining that the current access coverage level is a second coverage level; when the reference signal received power measured by the terminal equipment is greater than or equal to a second preset power threshold, determining that the current access coverage level is a third coverage level; wherein the first coverage level is less than the second coverage level, and the second coverage level is less than the third coverage level.
In an embodiment, the second determining module 803 is specifically configured to determine, when the current access coverage level is the first coverage level or the second coverage level, the PRACH transmission power according to the reference signal received power measured by the terminal device.
In an embodiment, the second determining module 803 is specifically configured to determine that the PRACH transmission power is the preset maximum PRACH transmission power if the current access coverage level is the third coverage level.
In one embodiment, the terminal device further includes: and the receiving module is used for receiving the repeated times of the PUSCH issued by the network equipment, and the repeated times of the PUSCH are determined by the network equipment according to the strength value of the PRACH channel.
The second determining module 803 is specifically configured to determine the PUSCH transmitting power according to the number of repetitions of the PUSCH and the reference signal received power measured by the terminal device.
In an embodiment, the first determining module 801 is specifically configured to receive a congestion indication parameter sent by a network device, and determine whether a current network is in a congestion state according to the congestion indication parameter sent by the network device.
In one embodiment, the congestion indication parameter includes a backoff index in a random access response, where the backoff index is used to indicate a waiting time for the terminal device to perform random access; the second determining module 803 is specifically configured to: if the backoff index in the random access response issued by the network equipment is not zero, determining that the current network state is in a congestion state; and if the backoff index in the random access response issued by the network equipment is zero, determining that the current network state is not in the congestion state.
In one embodiment, the congestion indication parameter comprises an access barring function parameter in a system message; the second determining module 803 is specifically configured to: if the access prohibition function parameter in the system message is in the starting state, determining that the current network is in the congestion state; and if the access prohibition function parameter in the system message is in an un-started state, determining that the current network is not in a congestion state.
Referring to fig. 9, fig. 9 illustrates a terminal device provided by some embodiments of the present application. As shown in fig. 9, the terminal device may include: one or more terminal processors 901, memory 902, communication interface 903, receiver 905, transmitter 906, coupler 907, antenna 908, user interface 902, and input-output modules (including audio input-output module 910, key input module 911, and display 912, etc.). These components may be connected by a bus 904, or otherwise, as illustrated by FIG. 9. Wherein:
the communication interface 903 may be used for the terminal device to communicate with other communication devices, such as network devices. Specifically, the network device may be the network device shown in fig. 10. Specifically, the communication interface 903 may be a Long Term Evolution (LTE) (4G) communication interface, or a communication interface of 5G, a future new air interface, or CIOT. The terminal device may be configured with a wired communication interface 903, such as a Local Access Network (LAN) interface, without being limited to a wireless communication interface.
Transmitter 906 may be used for transmit processing, e.g., signal modulation, of signals output by end processor 901. Receiver 905 may be used for receive processing, e.g., signal demodulation, of mobile communication signals received by antenna 908. In some embodiments of the present application, the transmitter 906 and receiver 905 may be considered as one wireless modem. In the terminal device, the number of the transmitter 906 and the receiver 905 may be one or more. The antenna 908 may be used to convert electromagnetic energy in the transmission line to electromagnetic energy in free space or vice versa. The coupler 907 is used to divide the mobile communication signal received by the antenna 908 into a plurality of paths and distribute the plurality of paths to a plurality of receivers 905.
In addition to the transmitter 906 and receiver 905 shown in fig. 9, the terminal device may also include other communication components, such as a GPS module, a Bluetooth (Bluetooth) module, a Wireless Fidelity (Wi-Fi) module, and so forth. Not limited to the above-stated wireless communication signals, the terminal device may also support other wireless communication signals, such as satellite signals, short-wave signals, and the like. Not limited to wireless communication, the terminal device may also be configured with a wired network interface (such as a LAN interface) to support wired communication.
The input/output module may be used to implement interaction between the terminal device and a user/external environment, and may mainly include an audio input/output module 910, a key input module 911, a display 912, and the like. Specifically, the input/output module may further include: cameras, touch screens, sensors, and the like. The input/output modules are all in communication with the terminal processor 901 through a user interface 909.
Memory 902 is coupled to terminal processor 901 for storing various software programs and/or sets of instructions. In particular, the memory 902 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory 902 may store an operating system (hereinafter referred to simply as a system), such as an embedded operating system like ANDROID, IOS, WINDOWS, or LINUX. The memory 902 may also store a network communication program that may be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices. The memory 902 may further store a user interface program, which may vividly display the content of the application program through a graphical operation interface, and receive the control operation of the application program from the user through input controls such as menus, dialog boxes, and buttons.
In some embodiments of the present application, the memory 902 may be used to store an implementation program of the resource allocation method provided in one or more embodiments of the present application on the terminal device side.
Terminal processor 901 is operable to read and execute computer readable instructions. Specifically, the terminal processor 901 may be configured to call a program stored in the memory 912, and perform:
determining whether a current network is in a congested state;
when the current network is in a congestion state, measuring the reference signal receiving power of the terminal equipment;
and determining the PRACH transmitting power and the PUSCH transmitting power according to the reference signal receiving power measured by the terminal equipment.
It is to be understood that the terminal device may be the terminal 201 in the system shown in fig. 2, and may be implemented as a mobile device, a mobile station (mobile station), a mobile unit (mobile unit), a wireless unit, a remote unit, a user agent, a mobile client, etc.
It should be noted that the terminal device shown in fig. 9 is only one implementation manner of the embodiment of the present application, and in practical applications, the terminal device may further include more or less components, which is not limited herein.
Referring to fig. 10, fig. 10 illustrates a network device provided by some embodiments of the present application. As shown in fig. 10, the network device may include: one or more network device processors 1001, memory 1002, communication interface 1003, transmitter 1005, receiver 1006, coupler 1007, and antenna 1008. These components may be connected by a bus 1004, or otherwise, as illustrated in FIG. 10. Wherein:
the communication interface 1003 may be used for the network device to communicate with other communication devices, such as a terminal device or other network devices. Specifically, the terminal device may be the terminal device shown in fig. 9. Specifically, the communication interface 1003 and the communication interface 903 may be Long Term Evolution (LTE) (4G) communication interfaces, or may be communication interfaces of 5G or future new air interfaces. Without being limited to a wireless communication interface, the network devices may also be configured with a wired communication interface 1003 to support wired communication, e.g., a backhaul link between one network device and another network device may be a wired communication connection.
The transmitter 1005 may be used for transmit processing, e.g., signal modulation, of the signal output by the network device processor 1001. Receiver 1006 may be used for receive processing of mobile communication signals received by antenna 1008. Such as signal demodulation. In some embodiments of the present application, the transmitter 1005 and the receiver 1006 may be considered as one wireless modem. In the network device, the number of the transmitter 1005 and the receiver 1006 may be one or more. The antenna 1008 may be used to convert electromagnetic energy in transmission lines to electromagnetic energy in free space, or vice versa. Coupler 1007 may be used to multiplex the mobile communications signal for distribution to a plurality of receivers 1006.
The memory 1002 is coupled to the network device processor 1001 for storing various software programs and/or sets of instructions. In particular, the memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory 1002 may store an operating system (hereinafter, referred to as a system), such as an embedded operating system like uCOS, VxWorks, RTLinux, or the like. The memory 1002 may also store a network communication program that may be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices.
The network device processor 1001 may be used to perform radio channel management, implement call and communication link setup and teardown, provide cell switching control for users within the control area, and the like. Specifically, the network device processor 1001 may include: an Administration/Communication Module (AM/CM) (a center for voice channel switching and information switching), a Basic Module (BM) (for performing call processing, signaling processing, radio resource management, management of radio links, and circuit maintenance functions), a code conversion and sub-multiplexing unit (TCSM) (for performing multiplexing/demultiplexing and code conversion functions), and so on.
In embodiments of the present application, the network device processor 1001 may be configured to read and execute computer readable instructions. In one embodiment, the network device processor 1001 may invoke the program in the memory 1002 to perform the following steps:
identifying far and near terminal equipment, and determining the terminal equipment, wherein the terminal equipment is near point terminal equipment;
sending a congestion indication parameter to the terminal equipment, wherein the congestion indication parameter is used for indicating the congestion state of the current network;
and receiving the random access signal sent by the terminal equipment.
It should be further noted that the network device processor 1001 may be configured to invoke a program stored in the memory 1002, for example, an implementation program of the power adjustment method provided in one or more embodiments of the present application on the network device side, and execute instructions included in the program, which is not described herein again.
It is understood that the network device may be the network device 202 in the system shown in fig. 2, and may be implemented as a base transceiver station, a wireless transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a NodeB, an eNodeB, an access point or a TRP, etc.
It should be noted that the network device shown in fig. 10 is only one implementation manner of the embodiment of the present application, and in practical applications, the network device may further include more or less components, which is not limited herein.
It should be understood that the embodiments of the present invention are entity device embodiments corresponding to the method embodiments, and the description of the method embodiments is also applicable to the embodiments of the present invention.
In another embodiment of the present application, a communication apparatus is further provided, where the communication apparatus may include a processing element and a storage element, where the storage element may be used to store a program, and when the program is called by the processing element, the method shown in the terminal device in the present application may be implemented. For example, the communication device may be a communication chip.
In another embodiment of the present application, a computer-readable storage medium is provided, which stores a program that, when executed by a processor, can implement the method shown in the terminal device in the present application or implement the method shown in the network device.
It should be noted that, for specific processes executed by the processor of the computer-readable storage medium, reference may be made to the methods described in the above method embodiments, and details are not described herein again.
In yet another embodiment of the present invention, a computer program product containing instructions is provided, which when run on a computer, causes the computer to perform the method described in the above method embodiment.
The computer readable storage medium may be an internal storage unit of the terminal according to any of the foregoing embodiments, for example, a hard disk or a memory of the terminal. The computer-readable storage medium may also be an external storage device of the computer, such as a plug-in hard disk, a Smart Memory Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc., provided on the computer. Further, the computer-readable storage medium may also include both an internal storage unit and an external storage device of the terminal. The computer-readable storage medium is used for storing the program and other programs and data required by the terminal. The computer readable storage medium may also be used to temporarily store data that has been output or is to be output.
Based on the same inventive concept, the principle of solving the problem of the computer provided in the embodiment of the present invention is similar to that of the embodiment of the method of the present invention, so the implementation of the computer may refer to the implementation of the method, and is not described herein again for brevity.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a program, which can be stored in a computer-readable storage medium, and when the program is executed, the processes of the embodiments of the methods described above can be included. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The foregoing describes in detail a power adjustment method and related devices provided in an embodiment of the present invention, and specific examples are applied herein to explain the principles and embodiments of the present invention, and the description of the foregoing embodiments is only used to help understand the structure, method and core ideas of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (20)

1. A power adjustment method is applied to a terminal device, and comprises the following steps:
determining whether a current network is in a congested state;
when the current network is in a congestion state, measuring the reference signal receiving power of the terminal equipment;
and determining the transmitting power of a Physical Random Access Channel (PRACH) and the transmitting power of a Physical Uplink Shared Channel (PUSCH) according to the reference signal receiving power measured by the terminal equipment.
2. The method of claim 1, wherein determining the PRACH transmit power from the reference signal received power measured by the terminal device comprises:
determining the current access coverage grade according to the reference signal receiving power measured by the terminal equipment;
and determining the PRACH transmitting power according to the current access coverage grade and the reference signal receiving power measured by the terminal equipment.
3. The method of claim 1 or 2, wherein the determining the current access coverage class according to the reference signal received power measured by the terminal device comprises:
when the reference signal received power measured by the terminal equipment is smaller than a first preset power threshold, determining that the current access coverage level is a first coverage level;
when the reference signal received power measured by the terminal equipment is greater than or equal to a first preset power threshold and less than a second preset power threshold, determining that the current access coverage level is a second coverage level;
when the reference signal received power measured by the terminal equipment is greater than or equal to a second preset power threshold, determining that the current access coverage level is a third coverage level;
wherein the first coverage level is less than the second coverage level, which is less than the third coverage level.
4. The method of claim 3, wherein the determining the PRACH transmission power according to the current access coverage level and the reference signal received power measured by the terminal device comprises:
and when the current access coverage grade is a first coverage grade or a second coverage grade, determining the PRACH transmitting power according to the reference signal receiving power measured by the terminal equipment.
5. The method of claim 4, wherein the method further comprises:
and if the current access coverage level is a third coverage level, determining the PRACH transmitting power to be a preset maximum PRACH transmitting power.
6. The method of claim 1, wherein the method further comprises:
receiving the repeated times of the PUSCH issued by the network equipment, wherein the repeated times of the PUSCH are determined by the network equipment according to the strength value of the PRACH channel;
determining the PUSCH transmitting power according to the reference signal receiving power measured by the terminal equipment, wherein the method comprises the following steps:
and determining PUSCH transmitting power according to the repeated times of the PUSCH and the reference signal receiving power measured by the terminal equipment.
7. The method of claim 1, wherein the determining whether the current network is in a congested state comprises:
receiving a congestion indication parameter sent by network equipment;
and determining whether the current network is in a congestion state or not according to the congestion indication parameter issued by the network equipment.
8. The method of claim 1, wherein the congestion indication parameter comprises a backoff index in a random access response, the backoff index indicating a wait duration for random access by the terminal device;
the determining whether the current network is in the congestion state according to the congestion indication parameter issued by the network device includes:
if the backoff index in the random access response issued by the network equipment is not zero, determining that the current network state is in a congestion state;
and if the backoff index in the random access response issued by the network equipment is zero, determining that the current network state is not in the congestion state.
9. The method of claim 1, wherein the congestion indication parameter comprises an access barring function parameter in a system message;
the determining whether the current network is in the congestion state according to the congestion indication parameter of the network device includes:
if the access prohibition function parameter in the system message is in a starting state, determining that the current network is in a congestion state;
and if the access prohibition function parameter in the system message is in an un-started state, determining that the current network is not in a congestion state.
10. A terminal device, comprising:
a first determining module, configured to determine whether a current network is in a congested state;
a measuring module, configured to measure a reference signal received power of the terminal device when the current network is in a congestion state;
and the second determining module is used for determining the PRACH transmitting power and the PUSCH transmitting power according to the reference signal receiving power measured by the terminal equipment.
11. The terminal device of claim 10, wherein the second determining module is specifically configured to determine a current access coverage level according to the reference signal received power measured by the terminal device, and determine PRACH transmission power according to the current access coverage level and the reference signal received power measured by the terminal device.
12. The terminal device of claim 10 or 11, wherein the second determining module is specifically configured to:
when the reference signal received power measured by the terminal equipment is smaller than a first preset power threshold, determining that the current access coverage level is a first coverage level;
when the reference signal received power measured by the terminal equipment is greater than or equal to a first preset power threshold and less than a second preset power threshold, determining that the current access coverage level is a second coverage level;
when the reference signal received power measured by the terminal equipment is greater than or equal to a second preset power threshold, determining that the current access coverage level is a third coverage level;
wherein the first coverage level is less than the second coverage level, which is less than the third coverage level.
13. The terminal device of claim 12, wherein the second determining module is specifically configured to determine, when the current access coverage level is a first coverage level or a second coverage level, the PRACH transmission power according to a reference signal received power measured by the terminal device.
14. The terminal device of claim 13, wherein the second determining module is specifically configured to determine that the PRACH transmission power is a preset maximum PRACH transmission power if the current access coverage level is a third coverage level.
15. The terminal device of claim 10, wherein the terminal device further comprises:
a receiving module, configured to receive the number of repetitions of a PUSCH issued by the network device, where the number of repetitions of the PUSCH is determined by the network device according to a strength value of a PRACH channel;
the second determining module is specifically configured to determine PUSCH transmission power according to the number of repetitions of the PUSCH and reference signal received power measured by the terminal device.
16. The terminal device of claim 10, wherein the first determining module is specifically configured to receive a congestion indication parameter sent by a network device, and determine whether the current network is in a congestion state according to the congestion indication parameter sent by the network device.
17. The terminal device of claim 10, wherein the congestion indication parameter comprises a backoff index in a random access response, the backoff index indicating a wait duration for random access by the terminal device; the second determining module is specifically configured to:
if the backoff index in the random access response issued by the network equipment is not zero, determining that the current network state is in a congestion state;
and if the backoff index in the random access response issued by the network equipment is zero, determining that the current network state is not in the congestion state.
18. The terminal device of claim 10, wherein the congestion indication parameter comprises an access barring function parameter in a system message; the second determining module is specifically configured to:
if the access prohibition function parameter in the system message is in a starting state, determining that the current network is in a congestion state;
and if the access prohibition function parameter in the system message is in an un-started state, determining that the current network is not in a congestion state.
19. A terminal device, comprising:
a memory for storing a program;
a processor for executing a program in the memory to perform the method of any of claims 1-9.
20. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program which, when executed by a processor, causes the computer to perform the method according to any one of claims 1-9.
CN201880092564.9A 2018-04-26 2018-04-26 Power adjustment method and related equipment Active CN111989955B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/084575 WO2019205046A1 (en) 2018-04-26 2018-04-26 Power adjustment method and related device

Publications (2)

Publication Number Publication Date
CN111989955A CN111989955A (en) 2020-11-24
CN111989955B true CN111989955B (en) 2022-02-18

Family

ID=68293460

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201880092564.9A Active CN111989955B (en) 2018-04-26 2018-04-26 Power adjustment method and related equipment

Country Status (2)

Country Link
CN (1) CN111989955B (en)
WO (1) WO2019205046A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113615300A (en) * 2019-03-27 2021-11-05 瑞典爱立信有限公司 Method, terminal equipment and base station for random access process
CN114402664B (en) * 2019-11-08 2024-01-05 Oppo广东移动通信有限公司 Method for power backoff, terminal device and network device
CN112839369B (en) * 2019-11-25 2023-03-31 中国移动通信有限公司研究院 Network selection method and device of multi-mode terminal
CN113810986B (en) * 2020-06-12 2023-05-05 深圳市万普拉斯科技有限公司 Method, device, terminal and storage medium for dynamically adjusting transmitting power
CN112351483B (en) * 2020-10-30 2023-05-05 广东小天才科技有限公司 Intelligent power saving method and system for LTE terminal, equipment and storage medium
CN114126025B (en) * 2021-11-02 2023-04-28 中国联合网络通信集团有限公司 Power adjustment method for vehicle-mounted terminal, vehicle-mounted terminal and server
CN114630349B (en) * 2022-03-18 2024-04-09 深圳绿米联创科技有限公司 Control method, device, system, electronic equipment and storage medium
WO2023236163A1 (en) * 2022-06-09 2023-12-14 Oppo广东移动通信有限公司 Communication method, terminal device, and network device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102404829A (en) * 2011-12-07 2012-04-04 华为技术有限公司 Method and device for power control
CN104837189A (en) * 2015-04-20 2015-08-12 天津大学 Closed-loop power control correction method based on LET-A system
CN105830508A (en) * 2013-12-20 2016-08-03 高通股份有限公司 Pusch and pucch power control under coverage enhancements in lte
CN106455069A (en) * 2015-08-11 2017-02-22 中兴通讯股份有限公司 Downlink control channel sending and receiving method and device
CN106961721A (en) * 2016-01-11 2017-07-18 中兴通讯股份有限公司 A kind of method and terminal for realizing uplink power control
CN107889209A (en) * 2016-09-29 2018-04-06 华为技术有限公司 The method and terminal device of a kind of Power Control

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101938822B (en) * 2009-07-02 2013-07-03 中兴通讯股份有限公司 Reverse power control method and reverse power control device
US9451639B2 (en) * 2013-07-10 2016-09-20 Samsung Electronics Co., Ltd. Method and apparatus for coverage enhancement for a random access process
EP3284291B1 (en) * 2015-04-13 2018-09-26 Telefonaktiebolaget LM Ericsson (publ) Power control in a wireless network

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102404829A (en) * 2011-12-07 2012-04-04 华为技术有限公司 Method and device for power control
CN105830508A (en) * 2013-12-20 2016-08-03 高通股份有限公司 Pusch and pucch power control under coverage enhancements in lte
CN104837189A (en) * 2015-04-20 2015-08-12 天津大学 Closed-loop power control correction method based on LET-A system
CN106455069A (en) * 2015-08-11 2017-02-22 中兴通讯股份有限公司 Downlink control channel sending and receiving method and device
CN106961721A (en) * 2016-01-11 2017-07-18 中兴通讯股份有限公司 A kind of method and terminal for realizing uplink power control
CN107889209A (en) * 2016-09-29 2018-04-06 华为技术有限公司 The method and terminal device of a kind of Power Control

Also Published As

Publication number Publication date
WO2019205046A1 (en) 2019-10-31
CN111989955A (en) 2020-11-24

Similar Documents

Publication Publication Date Title
CN111989955B (en) Power adjustment method and related equipment
US10244538B2 (en) System and method for determining a resource selection technique
AU2021203632B2 (en) Power control enhancement for random access
US20210307082A1 (en) User equipment, network node and methods therein for handling a two-step random access procedure in a wireless communications network
CN114073141A (en) User equipment and method for excluding and selecting resources in new radio sidelink communications
US11516852B2 (en) Random access method of communications apparatus, apparatus, and storage medium
WO2020135179A1 (en) Power control method and device
US20220150980A1 (en) Ue, network node and methods for handling 2-step and 4-step random access procedures
US20210385859A1 (en) Method and apparatus for lbt option selection for wideband operation
US11057936B2 (en) Mechanism for merging colliding RACH procedures
EP3459295B1 (en) Configuring transmission power of a transmission
KR20180134843A (en) Terminal device and communication method
WO2019157997A1 (en) Communication method and device
US11395241B2 (en) Parameter adjustment method and related device
WO2023004756A1 (en) Random access method and apparatus, device and storage medium
CN111385865B (en) Random access method, device, system and storage medium
WO2024032064A1 (en) Power control method and communication apparatus
WO2023202530A1 (en) Power determination method and apparatus, and chip and module device
WO2022199936A1 (en) Adaptive uplink transmission in an unlicensed radio spectrum

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant