Transmit power control method, communication device, medium and program product

Abstract

The invention provides a transmission power control method, a communication device, a medium and a program product. The method comprises the following steps: initiating random access aiming at a target cell to network equipment; if the number of random access failures reaches N, an external power amplifier is used in the random access process to improve the transmitting power of the signal, and the reference signal receiving power is greater than a first threshold, the transmitting power of the signal is reduced; n is an integer greater than or equal to 1; and initiating the random access for the target cell to the network equipment again. According to the method provided by the invention, for the terminal equipment provided with the external power amplifier, the condition of signal saturation can be reduced, so that the communication performance of the terminal equipment is improved.

Description

Technical Field

[0001] The present application relates to communication technology, and in particular to a transmission power control method, a communication device, a medium and a program product. Background Art

[0002] As a communication system that adopts the next generation of wireless communication technology, the 5G mobile communication system has the characteristics of high speed, low latency, and large capacity. At present, the terminal equipment in the 5G mobile communication system has added an external power amplifier with fixed gain to increase the signal transmission power, thereby achieving the purpose of improving the cell signal coverage.

[0003] However, the above method of improving the cell signal coverage is likely to affect the communication performance of the terminal equipment. Summary of the invention

[0004] The present application provides a transmission power control method, a communication device, a medium and a program product, which are used to improve the communication performance of a terminal device equipped with an external power amplifier.

[0005] In a first aspect, the present application provides a transmission power control method, which is applied to a terminal device, and the method includes:

[0006] Initiate random access to a target cell to a network device; if the number of failed random access initiations reaches N times, and an external power amplifier is used to increase the transmit power of the signal during the random access process, and the reference signal received power is greater than a first threshold, reduce the transmit power of the signal; N is an integer greater than or equal to 1; re-initiate random access to the target cell to the network device.

[0007] Optionally, the method further comprises:

[0008] Receive first indication information of the network device, where the first indication information is used to indicate at least one of the following: a value of N, a value range of N, a value of the first threshold, and a value range of the first threshold.

[0009] Optionally, after accessing the target cell, the method further includes:

[0010] The uplink transmission bit error rate and / or the downlink transmission bit error rate are measured during data transmission; if the uplink transmission bit error rate within M consecutive measurement cycles is greater than or equal to the second threshold, and / or the downlink transmission bit error rate within Q consecutive measurement cycles is greater than or equal to the third threshold, and the external power amplifier is used to increase the signal transmission power during data transmission, and the reference signal receiving power is greater than the fourth threshold, then the signal transmission power is reduced; both M and Q are integers greater than or equal to 2; if the uplink transmission bit error rate within M consecutive measurement cycles is greater than or equal to the second threshold, and / or the downlink transmission bit error rate within Q consecutive measurement cycles is greater than or equal to the third threshold, and the reference signal receiving power is less than the fifth threshold, then the external power amplifier is used to increase the signal transmission power during data transmission; the fifth threshold is less than the fourth threshold.

[0011] Optionally, the method further comprises:

[0012] Receive second indication information of the network device, where the second indication information is used to indicate at least one of the following: the value of the measurement period, the value range of the measurement period, the value of M, the value range of M, the value of Q, the value range of Q, the value of the second threshold, the value range of the second threshold, the value of the third threshold, the value range of the third threshold, the value of the fourth threshold, the value range of the fourth threshold, the value of the fifth threshold, and the value range of the fifth threshold.

[0013] Optionally, reducing the transmission power of the signal includes: turning off the external power amplifier.

[0014] Optionally, the re-initiating random access to the target cell to the network device includes: initializing the transmission power used for random access; based on the initialized transmission power, using an open-loop transmission power control method, to re-initiate random access to the target cell to the network device.

[0015] In a second aspect, the present application provides a communication device, which is applied to a terminal device, and the device includes:

[0016] A sending module is used to initiate random access to a target cell to a network device; a processing module is used to reduce the transmission power of the signal if the number of failures in initiating random access reaches N times, and an external power amplifier is used to increase the transmission power of the signal during the random access process, and the reference signal reception power is greater than the first threshold; the N is an integer greater than or equal to 1; the sending module is also used to re-initiate random access to the target cell to the network device.

[0017] In a third aspect, the present application provides a communication device, which is applied to a terminal device, and includes: a processor, and a memory and a transceiver communicatively connected to the processor;

[0018] The transceiver is used to send and receive signals under the control of the processor; the memory stores computer-executable instructions; and the processor executes the computer-executable instructions stored in the memory to implement the method as described in any one of the first aspects.

[0019] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method as described in any one of the first aspects.

[0020] In a fifth aspect, the present application provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method as described in any one of the first aspects is implemented.

[0021] The transmission power control method, communication device, medium and program product provided in the present application can determine whether to perform transmission power control based on the number of random access failures, whether to use an external power amplifier, and the RSRP value during the process of random access initiation for a terminal device equipped with an external power amplifier, thereby reducing the signal saturation during the random access process, improving the success rate of random access of the terminal device, and further improving the network access success rate of the terminal device, thereby improving the communication performance of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0023] Figure 1 is a schematic diagram of a mobile communication system 100 applicable to an embodiment of the present application;

[0024] Figure 2 A flowchart of a transmission power control method provided in an embodiment of the present application;

[0025] Figure 3 A flowchart of another transmission power control method provided in an embodiment of the present application;

[0026] Figure 4 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0027] Figure 5 It is a structural diagram of a communication device 500 provided in an embodiment of the present application.

[0028] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0030] The terms "first", "second", etc. in the embodiments of the present application are only used for illustration and distinction of the described objects. There is no distinction in order, nor does it indicate a special limitation on the number of objects in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0031] The technical solution provided in the embodiment of the present application can be applicable to a variety of mobile communication systems, especially 5G mobile communication systems. For example, the applicable mobile communication system can be a global system of mobilecommunication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new radio (NR) system, a future communication system, or a system integrating multiple communication systems, etc., which is not limited by the embodiment of the present application. These multiple mobile communication systems all include terminal equipment and network equipment. The mobile communication system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0032] The technical solution provided in the embodiments of the present application can be applied to various communication scenarios, for example, it can be applied to one or more of the following communication scenarios: enhanced mobile broadband (eMBB) communication, ultra-reliable and low latency communication (URLLC), machine type communication (MTC), mMTC, device-to-device (D2D) communication, vehicle to everything (V2X) communication, vehicle to vehicle (V2V) communication, and Internet of Things (IoT), etc. Optionally, mMTC may include one or more of the following communications: industrial wireless sensor network (IWSN) communication, communication in video surveillance scenarios, and communication of wearable devices, etc.

[0033] Figure 1 1 is a schematic diagram of a mobile communication system 100 applicable to an embodiment of the present application. Figure 1 As shown, the mobile communication system 100 may include at least one network device, such as Figure 1 The mobile communication system 100 may also include at least one terminal device, such as Figure 1 The terminal devices 120, 130, and 140 are shown. The network device and the terminal device can communicate or transmit, including: the network device sends a downlink signal to the terminal device, and / or the terminal device sends an uplink signal to the network device. Among them, the signal can also be replaced by information or data.

[0034] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiated protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0035] The network device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (base transceiver station, BTS) in the global system for mobile communications (global system for mobile communications, GSM) or code division multiple access (code division multiple access, CDMA), or a network device (NodeB) in wide-band code division multiple access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved node b (home evolved node b, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0036] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

[0037] In the embodiment of the present application, the device for realizing the function of the terminal device may be a terminal device; or it may be a device capable of supporting the terminal device to realize the function, such as a chip system. The device may be installed in the terminal device or used in combination with the terminal device. In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices. In the embodiment of the present application, the technical solution provided is described by taking the terminal device as an example of the device for realizing the function of the terminal device.

[0038] In the embodiment of the present application, the device for realizing the function of the network device may be a network device; or it may be a device capable of supporting the network device to realize the function, such as a chip system. The device may be installed in the network device or used in combination with the network device. In the embodiment of the present application, the technical solution provided is described by taking the device for realizing the function of the network device as an example that the network device is an example.

[0039] At present, the terminal equipment in the 5G mobile communication system has added an external power amplifier with a fixed gain. The external power amplifier refers to an additional power amplifier in addition to the power amplifier it has. The newly added power amplifier can be located inside the terminal device, or it can be connected to the terminal device in an external manner. For example, it is connected to the terminal device through the external interface of the terminal device. The embodiment of the present application does not limit the setting method of the external power amplifier.

[0040] The external power amplifier is used to increase the transmission power of the signal, or in other words, the external power amplifier is used to increase the maximum transmission power of the terminal device. In this way, the purpose of improving the cell signal coverage can be achieved. That is, when the terminal device sends a signal to the network device, and when receiving a signal sent by the network device, the transmission power of the signal can be increased by the external power amplifier.

[0041] However, since the external power amplifier has a fixed gain, that is, it increases the transmission power of the signal in a fixed manner, if the distance between the terminal and the network device is close, the external power amplifier is likely to cause the transmitted signal to be saturated, causing the receiving end to be unable to demodulate the received signal normally, affecting the communication performance of the terminal device (such as the performance of cell access, data transmission performance, etc.).

[0042] It should be understood that when the signal is an uplink signal, the receiving end is a network device, and when the signal is a downlink signal, the receiving end is a terminal device.

[0043] In view of this, an embodiment of the present application provides a transmission power control method, which controls the transmission power of a signal when a terminal device is deployed with an external power amplifier to reduce the occurrence of signal saturation.

[0044] It should be noted that the method of the embodiment of the present application can be applicable to scenarios where an external power amplifier with fixed gain is deployed in any mobile communication system, and can also be applicable to scenarios where an external power amplifier with non-fixed gain (i.e., dynamic gain) is deployed, etc.

[0045] The following uses terminal devices as examples to describe the technical solutions of the present application in detail from the perspectives of the terminal device accessing a cell and the data transmission scenario. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0046] Figure 2 A flow chart of a transmission power control method provided in an embodiment of the present application is as follows: Figure 2 As shown, this embodiment relates to a scenario in which a terminal device accesses a target cell. The method may include the following steps:

[0047] S201: Initiate random access to a target cell to a network device.

[0048] Optionally, the random access can be any scenario of initiating random access, for example, it can be initiated by the terminal device at the time of initial network access, it can also be initiated by the terminal device when performing cell reselection, it can also be initiated by the terminal device when performing cell switching, it can also be initiated by the terminal device when performing cell redirection, etc.

[0049] The present application does not limit the manner in which the terminal device initiates random access. For example, after searching for the signal of the target cell under the network device, the terminal device can first initialize the transmit power used for random access, and then initiate random access based on the initialized transmit power by adopting an open-loop transmit power control method. That is, the network device does not need to provide feedback on the reception situation. When the terminal device fails to perform random access once, the terminal device can increase the transmit power used for random access according to a preset step size and initiate random access again.

[0050] S202: If the number of random access failures reaches N, and an external power amplifier is used to increase the transmit power of the signal during the random access process, and the reference signal received power is greater than the first threshold, then reduce the transmit power of the signal; N is an integer greater than or equal to 1.

[0051] The embodiment of the present application does not limit the judgment order of the above three conditions. For example, it can be determined first whether the number of failures to initiate random access has reached N times. If so, it is further determined whether an external power amplifier is used to increase the transmission power of the signal during the random access process. If so, it is further determined whether the reference signal receiving power (reference signal receiving power, RSRP) is greater than the first threshold. Among them, the size of RSRP can reflect the distance between the terminal device and the network device. The larger the RSRP, the closer the distance between the terminal device and the network device, and the smaller the RSRP, the farther the distance between the terminal device and the network device.

[0052] Optionally, the terminal device may determine whether to use an external power amplifier to increase the transmission power of the signal during the random access process, or determine whether the external power amplifier is effective during the random access process, or determine whether the external power amplifier is enabled during the random access process, or determine whether the external power amplifier is working during the random access process, for example, by an existing method of determining whether the hardware is enabled. The determination of whether the hardware is enabled mentioned here may be, for example, based on a switch signal corresponding to the external power amplifier, which is specifically related to the deployment method of the external power amplifier on the terminal device.

[0053] If the number of random access failures reaches N times, and an external power amplifier is used to increase the signal transmission power during the random access process, if RSRP is greater than the first threshold, it means that the distance between the terminal device and the network device is relatively close. Therefore, the reason why the terminal device fails to initiate random access multiple times may be due to signal saturation. In this implementation, the signal saturation during the random access process can be reduced by reducing the signal transmission power, thereby improving the success rate of random access of the terminal device.

[0054] Optionally, if the number of failed attempts to initiate random access does not reach N times, or an external power amplifier is not used to increase the signal transmission power during the random access process, or RSRP is less than or equal to the first threshold, the signal transmission power may not be reduced, and random access may continue to be attempted in the current manner, or other control strategies may be used for processing, etc. This application does not limit this.

[0055] Optionally, the signal transmission power can be reduced by turning off the external power amplifier. That is, the terminal device can directly transmit the signal to be sent to the network device through the antenna without performing secondary signal amplification through the external power amplifier. Accordingly, the signal sent by the network device is directly transmitted to the internal for processing without performing secondary signal amplification through the external power amplifier. In some embodiments, the mode of not performing secondary signal amplification through the external power amplifier can also be called a pass-through mode.

[0056] Optionally, the transmission power used by the terminal device for random access may be initialized again, so that the terminal device initiates random access using a lower transmission power.

[0057] Optionally, if the gain of the external power amplifier is adjustable, the signal transmission power can be reduced by adjusting the gain and / or re-initializing the transmission power used for random access of the terminal device to a lower value.

[0058] It should be understood that the present application does not limit the value of N, the value range of N, the value of the first threshold, and the value range of the first threshold, which can be set according to actual needs. For example, the value range of N can be 1 to 100, with a default value of 10, etc. The value range of the first threshold can be -30dbm to -60dbm, with a default value of -50dbm, etc.

[0059] Optionally, the four items of information, namely, the value of N, the value range of N, the value of the first threshold, and the value range of the first threshold, can be set by the terminal device itself, or can be indicated by the network device through the first indication information; or part of the information can be set by the terminal device itself, and part of the information can be indicated by the network device through the first indication information.

[0060] In addition, when multiple pieces of information are indicated by a network device, the network device may indicate the multiple pieces of information through one first indication information, or may use different first indication information to indicate them respectively, and the present application does not limit this.

[0061] S203: Re-initiate random access to the target cell to the network device.

[0062] Optionally, if the signal transmission power is reduced by turning off the external power amplifier or adjusting the gain, the terminal device can re-initialize the transmission power used for random access and, based on the initialized transmission power, use an open-loop transmission power control method to re-initiate random access to the target cell to the network device.

[0063] It should be understood that in this implementation, the initialized transmission power may be lower than the transmission power initialized in S201, or may be equal to or greater than the transmission power, and may be specifically set according to actual needs.

[0064] Optionally, if the signal transmission power is reduced by re-initializing the transmission power used for random access of the terminal device, the terminal device can re-initiate random access to the target cell to the network device using an open-loop transmission power control method based on the re-initialized transmission power.

[0065] Optionally, after re-initiating random access to the target cell to the network device, the aforementioned steps can also be used to control the transmission power of the random access process until the terminal device successfully accesses the cell, or other control strategies can be used for control, etc. This application does not limit this.

[0066] The method of the embodiment of the present application can, for a terminal device equipped with an external power amplifier, determine whether to perform transmit power control based on the number of random access failures, whether an external power amplifier is used, and the value of RSRP during the process of initiating random access, thereby reducing the signal saturation situation during the random access process, improving the success rate of random access of the terminal device, and further improving the network access success rate of the terminal device, thereby improving the communication performance of the terminal device.

[0067] Figure 3 A flow chart of another transmission power control method provided in an embodiment of the present application is as follows: Figure 3 As shown, this embodiment relates to a scenario in which a terminal device performs data transmission after accessing a target cell. The method may include the following steps:

[0068] S301. Measure an uplink transmission bit error rate and / or a downlink transmission bit error rate during data transmission.

[0069] In this embodiment, after accessing the target cell, the terminal device may measure the uplink transmission bit error rate and / or the downlink transmission bit error rate during data transmission with the network device. For example, the uplink transmission bit error rate or the downlink transmission bit error rate within the measurement period may be measured in units of a measurement period, or both the uplink transmission bit error rate and the downlink transmission bit error rate may be measured.

[0070] S302: Determine whether an uplink transmission bit error rate within M consecutive measurement periods and / or a downlink transmission bit error rate within Q consecutive measurement periods is greater than or equal to a third threshold.

[0071] Wherein, M and Q are both integers greater than or equal to 2.

[0072] If the uplink transmission bit error rate within M consecutive measurement cycles is greater than or equal to the second threshold, or the downlink transmission bit error rate within Q consecutive measurement cycles is greater than or equal to the third threshold, or the uplink transmission bit error rate within M consecutive measurement cycles is greater than or equal to the second threshold and the downlink transmission bit error rate within Q consecutive measurement cycles is greater than or equal to the third threshold, it means that continuous bit errors occur in the terminal device during data transmission, and step S303 is executed.

[0073] If none of the conditions are met, the current method of data transmission will continue, or other control strategies will be executed.

[0074] The embodiment of the present application does not limit the size of the measurement period, the values ​​of M and Q, and the values ​​of the second threshold and the third threshold. It should be understood that the values ​​of M and Q can be equal or unequal. Correspondingly, the values ​​of the second threshold and the third threshold can be equal or unequal.

[0075] For example, the value range of the measurement period may be 10 milliseconds (ms) to 2000 ms, and the default value may be 100 ms. The value range of M and Q may be 1 to 100, and the default value may be 5. The value range of the second threshold and the third threshold may be 10% to 50%, and the default value may be 20%.

[0076] S303: Determine whether to use an external power amplifier to increase the transmission power of the signal during data transmission.

[0077] If yes, step S304 is executed to further determine whether the continuous bit errors are caused by signal saturation.

[0078] S304: Determine whether the reference signal received power is greater than a fourth threshold.

[0079] If the RSRP is greater than the fourth threshold, it indicates that the distance between the terminal device and the network device is relatively close. Therefore, the reason why the terminal device has continuous bit errors during data transmission may be due to signal saturation. In this implementation, S305 may be executed. If the RSRP is less than or equal to the fourth threshold, S306 is executed.

[0080] S305: Reduce the transmission power of the signal.

[0081] By reducing the signal transmission power, the signal saturation during data transmission is reduced, the data transmission efficiency and performance of the terminal equipment are improved, and the communication performance of the terminal equipment is improved.

[0082] Regarding how to reduce the transmission power of the signal, please refer to the description of the aforementioned step S202, which will not be repeated here.

[0083] S306: Determine whether the reference signal received power is less than a fifth threshold.

[0084] The fifth threshold is less than the fourth threshold. The embodiment of the present application does not limit the values ​​of the fourth threshold and the fifth threshold. For example, the value range of the fourth threshold may be, for example, -30dbm to -60dbm, and the default value may be, for example, -50dbm. The value range of the fourth threshold may be, for example, -90dbm to -120dbm, and the default value may be, for example, -100dbm.

[0085] If the RSRP is less than the fifth threshold, it means that the terminal device is far away from the network device, so the reason why the terminal device has continuous bit errors during data transmission may be due to signal attenuation. Then, S307 is executed.

[0086] Optionally, if RSRP is greater than or equal to the fifth threshold, it indicates that the distance between the terminal device and the network device is moderate, and therefore, the reason why the terminal device has continuous bit errors during data transmission is not due to signal attenuation. In this scenario, the current method can continue to be used for data transmission, or other control strategies can be implemented.

[0087] S307: Use an external power amplifier to increase the transmission power of the signal during data transmission.

[0088] If an external power amplifier has been used to increase the signal transmission power before, continue to use the external power amplifier to increase the signal transmission power. If an external power amplifier has not been used to increase the signal transmission power before, turn on the external power amplifier and use the external power amplifier to increase the signal transmission power to improve the data transmission efficiency and performance of the terminal device, thereby improving the communication performance of the terminal device.

[0089] Optionally, if the external power amplifier is not used to increase the signal transmission power during data transmission, after step S303, the contents of the aforementioned steps S304-S307 can also be used to determine whether the continuous bit errors occurring in the terminal device during data transmission are related to signal attenuation or saturation. When it is determined that it is related to signal attenuation, the external power amplifier can be turned on in time, and the external power amplifier can be used to increase the signal transmission power to improve the data transmission efficiency and performance of the terminal device, thereby improving the communication performance of the terminal device.

[0090] It should be noted that in the scenario where the external power amplifier is not used to increase the signal transmission power during data transmission, if it is determined through the above steps that continuous bit errors in the terminal device during data transmission are related to signal saturation, the transmission power of the terminal device can be further reduced, or other control strategies can be used for processing. This application does not limit this.

[0091] It should be understood that the 14 items of information involved in this embodiment, including the value of the measurement period, the value range of the measurement period, the value of M, the value range of M, the value of Q, the value range of Q, the value of the second threshold, the value range of the second threshold, the value of the third threshold, the value range of the third threshold, the value of the fourth threshold, the value range of the fourth threshold, the value of the fifth threshold, and the value range of the fifth threshold, can be set by the terminal device itself, or can be indicated by the network device through the second indication information, or part of the information can be set by the terminal device itself, and part of the information can be indicated by the network device through the second indication information.

[0092] In addition, when multiple pieces of information are indicated by a network device, the network device may indicate the multiple pieces of information through one second indication information, or may use different second indication information to indicate them respectively, and the present application does not limit this.

[0093] The method of the embodiment of the present application can, for a terminal device equipped with an external power amplifier, determine whether to perform transmit power control during data transmission based on whether continuous bit error rates occur in the uplink and downlink, whether an external power amplifier is used, and the value of RSRP during data transmission between the terminal device and a network device, thereby reducing signal saturation or attenuation during data transmission, improving the data transmission efficiency and performance of the terminal device, and further improving the communication performance of the terminal device.

[0094] Above, combined Figures 2 to 3 The method provided by the embodiment of the present application is described in detail. Figures 4 to 5 The device provided by the embodiment of the present application is described in detail. In order to implement the various functions in the method provided by the embodiment of the present application, each communication device may include a hardware structure and / or a software module, and the above functions are implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a certain function of the above functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

[0095] Figure 4 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. Figure 4As shown, the communication device is applied to a terminal device, and the communication device includes: a sending module 401 and a processing module 402. Optionally, the device may also include: a receiving module 403.

[0096] The sending module 401 is used to initiate random access to a target cell to a network device.

[0097] The processing module 402 is used to reduce the transmit power of the signal if the number of failures in initiating random access reaches N times, and an external power amplifier is used to increase the transmit power of the signal during the random access process, and the reference signal received power is greater than the first threshold; the N is an integer greater than or equal to 1.

[0098] The sending module 401 is further configured to re-initiate random access to the target cell to the network device.

[0099] Optionally, the receiving module 403 is used to receive first indication information of the network device, where the first indication information is used to indicate at least one of the following: the value of N, the value range of N, the value of the first threshold, and the value range of the first threshold.

[0100] Optionally, the processing module 402 is further configured to:

[0101] After accessing the target cell, an uplink transmission bit error rate and / or a downlink transmission bit error rate is measured during data transmission.

[0102] If the uplink transmission bit error rate within M consecutive measurement cycles is greater than or equal to the second threshold, and / or the downlink transmission bit error rate within Q consecutive measurement cycles is greater than or equal to the third threshold, and the external power amplifier is used to increase the signal transmission power during data transmission, and the reference signal receiving power is greater than the fourth threshold, then the signal transmission power is reduced; M and Q are both integers greater than or equal to 2.

[0103] If the uplink transmission bit error rate within M consecutive measurement cycles is greater than or equal to the second threshold, and / or the downlink transmission bit error rate within Q consecutive measurement cycles is greater than or equal to the third threshold, and the reference signal receiving power is less than the fifth threshold, then the external power amplifier is used to increase the signal transmission power during data transmission; the fifth threshold is less than the fourth threshold.

[0104] Optionally, the receiving module 403 is also used to receive second indication information of the network device, and the second indication information is used to indicate at least one of the following: the value of the measurement period, the value range of the measurement period, the value of M, the value range of M, the value of Q, the value range of Q, the value of the second threshold, the value range of the second threshold, the value of the third threshold, the value range of the third threshold, the value of the fourth threshold, the value range of the fourth threshold, the value of the fifth threshold, and the value range of the fifth threshold.

[0105] Optionally, the processing module 402 is specifically configured to shut down the external power amplifier.

[0106] Optionally, the sending module 401 is specifically configured to initialize the transmit power used for random access; based on the initialized transmit power, an open-loop transmit power control method is adopted to re-initiate random access to the target cell to the network device.

[0107] The communication device provided in this application can execute the transmission power control method in the above method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here. Figure 4 The division of the modules shown is only a schematic diagram, and the present application does not limit the division of the modules and the naming of the modules.

[0108] Figure 5 is a schematic diagram of the structure of a communication device 500 provided in an embodiment of the present application. The communication device 500 is applied to a terminal device and can be used to perform the functions of the terminal device in the above method embodiment. The communication device 500 can be a terminal device or a chip in the terminal device. Figure 5 As shown, the communication device 500 includes a processor 520, a transceiver 510, and a memory 530. The processor 520, the transceiver 510, and the memory 530 can communicate with each other through an internal connection path to transmit control and / or data signals. The memory 530 is used to store computer-executable instructions, and the processor 520 is used to execute the computer-executable instructions in the memory 530 to control the transceiver 510 to send and receive signals.

[0109] The processor 520 and the memory 530 may be combined into a processing device, and the processor 520 is used to execute computer-executable instructions stored in the memory 530 to implement the above functions. In specific implementation, the memory 530 may also be integrated into the processor 520, or independent of the processor 520.

[0110] The transceiver 510 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.

[0111] It should be understood that Figure 5 The communication device 500 shown can implement Figure 2 , Figure 3 The process of the terminal device is involved in the method embodiment shown. The operations and / or functions of each module in the communication device 500 are respectively to implement the corresponding processes in the above method embodiment. For details, please refer to the description in the above method embodiment. To avoid repetition, the detailed description is appropriately omitted here.

[0112] The processor 520 can be used to execute the actions implemented by the terminal device described in the previous method embodiment, and the transceiver 510 can be used to execute the actions of the terminal device sending to or receiving from the network device described in the previous method embodiment. Please refer to the description in the previous method embodiment for details, which will not be repeated here.

[0113] Optionally, the communication device 500 may further include a power supply for providing power to various devices or circuits in the communication device.

[0114] In addition, in order to make the functions of the communication device more complete, the communication device 500 may also include one or more of an input unit, a display unit, an audio circuit, a camera, and a sensor, and the audio circuit may also include a speaker, a microphone, and the like.

[0115] The present application also provides a computer-readable storage medium, which may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes. Specifically, the computer-readable storage medium stores program instructions, and the program instructions are used for the transmission power control method in the above-mentioned embodiment.

[0116] The present application also provides a computer program product, which includes an execution instruction, which is stored in a readable storage medium. At least one processor of an electronic device can read the execution instruction from the readable storage medium, and at least one processor executes the execution instruction so that the electronic device implements the transmission power control method provided by the various embodiments described above.

[0117] An embodiment of the present application also provides a processing device, including a processor and a (communication) interface; the processor is used to execute the method in any of the above method embodiments.

[0118] It should be understood that the above-mentioned processing device can be one or more chips. For example, the processing device can be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD) or other integrated chips.

[0119] In the embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random access memory (RAM). The memory is any other medium that can be used to carry or store a desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto. The memory in the embodiment of the present application may also be a circuit or any other device that can implement a storage function, for storing program instructions and / or data.

[0120] According to the method provided in the embodiment of the present application, the present application also provides a communication system, which includes one or more network devices mentioned above, and one or more terminal devices.

[0121] The technical solution provided in the embodiment of the present application can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can 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. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a terminal device or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or a data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium, etc.

[0122] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0123] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0124] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0125] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0126] In the embodiments of the present application, under the premise of no logical contradiction, the embodiments may reference each other, for example, the methods and / or terms between method embodiments may reference each other, for example, the functions and / or terms between device embodiments may reference each other, for example, the functions and / or terms between device embodiments and method embodiments may reference each other.

[0127] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A transmission power control method, characterized in that: The method is applied to a terminal device, and the method comprises: Initiate random access to the target cell to the network device; If the number of random access initiation failures reaches N times, and an external power amplifier is used to increase the transmit power of the signal during the random access process, and the reference signal received power is greater than the first threshold, then the transmit power of the signal is reduced; where N is an integer greater than or equal to 1; Re-initiate random access to the target cell to the network device.

2. The method according to claim 1, characterized in that: The method further comprises: Receive first indication information of the network device, where the first indication information is used to indicate at least one of the following: The value of N, the value range of N, the value of the first threshold, and the value range of the first threshold.

3. The method according to claim 1, characterized in that After accessing the target cell, the method further includes: Measuring an uplink transmission bit error rate and / or a downlink transmission bit error rate during data transmission; If the uplink transmission bit error rate within M consecutive measurement periods is greater than or equal to the second threshold, and / or the downlink transmission bit error rate within Q consecutive measurement periods is greater than or equal to the third threshold, and the external power amplifier is used to increase the transmission power of the signal during data transmission, and the reference signal received power is greater than the fourth threshold, then the transmission power of the signal is reduced; the M and the Q are both integers greater than or equal to 2; If the uplink transmission bit error rate within M consecutive measurement cycles is greater than or equal to the second threshold, and / or the downlink transmission bit error rate within Q consecutive measurement cycles is greater than or equal to the third threshold, and the reference signal receiving power is less than the fifth threshold, then the external power amplifier is used to increase the signal transmission power during data transmission; the fifth threshold is less than the fourth threshold.

4. The method according to claim 3, characterized in that The method further comprises: Receive second indication information of the network device, where the second indication information is used to indicate at least one of the following: The value of the measurement period, the value range of the measurement period, the value of M, the value range of M, the value of Q, the value range of Q, the value of the second threshold, the value range of the second threshold, the value of the third threshold, the value range of the third threshold, the value of the fourth threshold, the value range of the fourth threshold, the value of the fifth threshold, and the value range of the fifth threshold.

5. The method according to any one of claims 1 to 4, characterized in that: The reducing the transmission power of the signal comprises: The external power amplifier is turned off.

6. The method according to claim 5, characterized in that The re-initiating random access to the target cell to the network device includes: Initialize the transmission power used for random access; Based on the initialized transmit power, an open-loop transmit power control method is adopted to re-initiate random access to the target cell to the network device.

7. A communication device, characterized in that: The device is applied to a terminal device, and the device includes: A sending module, used to initiate a random access to a target cell to a network device; A processing module, configured to reduce the transmit power of the signal if the number of times of failure to initiate random access reaches N times, and an external power amplifier is used to increase the transmit power of the signal during the random access process, and the reference signal received power is greater than a first threshold; wherein N is an integer greater than or equal to 1; The sending module is also used to re-initiate random access to the target cell to the network device.

8. A communication device, characterized in that: The device is applied to a terminal device, and the communication device comprises: a processor, and a memory and a transceiver connected to the processor for communication; The transceiver is used to send and receive signals under the control of the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 6 when executed by a processor.

10. A computer program product, characterized in that The invention comprises a computer program, which implements the method according to any one of claims 1 to 6 when being executed by a processor.

Images