Power ramping determination method, apparatus and communication device - Patents.com

Abstract

[Solution] The embodiments of the present disclosure provide a power ramping decision method, apparatus, and communication device, which relate to the mobile communication technology field. For multiple Physical Random Access Channel (PRACH) transmissions in a single Random Access Channel (RACH) attempt, a user equipment decides whether to perform power ramping based on configuration information or protocols of a network device. A power ramping mechanism for multiple PRACH transmissions is proposed to ensure PRACH coverage and clarify terminal operation.

Description

[Technical Field]

[0001] The present disclosure relates to the field of mobile communication technology, and in particular to a power ramping decision method, apparatus and communication device. [Background technology]

[0002] In 3GPP (3rd Generation Partnership Project, registered trademark) R15, a PRACH (Physical Random Access Channel) is transmitted only once for each RACH (Random Access Channel) attempt, and a power ramping mechanism is introduced for PRACH retransmissions. With each increase in retransmissions, the PRACH channel increases the transmission power by one step size, clarifying the conditions under which the terminal performs power ramping.

[0003] In the R18 CE WI, the introduction of a mechanism for multiple PRACH transmissions in one RACH attempt is being considered, and the PRACH coverage can be extended by increasing the probability of successful detection through uncorrelated merging, etc. However, it is currently unclear how the UE will support the power ramping mechanism in RACH attempts in scenarios where multiple PRACH transmissions are introduced. Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides a power ramping decision method, apparatus and communication device, providing a power ramping mechanism for multiple PRACH transmissions, ensuring PRACH coverage and clarifying terminal operation. [Means for solving the problem]

[0005] An embodiment of a first aspect of the present disclosure provides a power ramping decision method, the method being executed by a user equipment (UE), and including determining whether to perform power ramping for multiple physical random access channel (PRACH) transmissions in a single random access channel (RACH) attempt based on configuration information or a protocol of a network device.

[0006] An embodiment of a second aspect of the present disclosure provides a power ramping decision method, the method being performed by a network device, and including the step of transmitting configuration information to a user equipment (UE), where the configuration information is information for instructing the UE whether to perform power ramping.

[0007] An embodiment of a third aspect of the present disclosure provides a user equipment (UE), including a decision module for determining whether to perform power ramping for multiple physical random access channel (PRACH) transmissions in a single random access channel (RACH) attempt based on configuration information or a protocol of a network device.

[0008] An embodiment of a fourth aspect of the present disclosure provides a network device, the network device including a transmitting module for transmitting configuration information to a user equipment (UE), where the configuration information carries information indicating whether the UE performs power ramping.

[0009] An embodiment of a fifth aspect of the present disclosure provides a communications device, the communications device including a transceiver, a memory, and a processor, the processors being respectively coupled to the transceiver and the memory and configured to execute computer-executable instructions in the memory to control transmission and reception of radio signals by the transceiver and to implement a method according to an embodiment of the first aspect or an embodiment of the second aspect of the present disclosure.

[0010] An embodiment of a sixth aspect of the present disclosure provides a computer storage medium, wherein the computer storage medium has computer-executable instructions stored thereon, which, when executed by a processor, implements a method of an embodiment of the first aspect or an embodiment of the second aspect of the present disclosure.

[0011] An embodiment of a seventh aspect of the present disclosure provides a communication system, the communication system including a user equipment (UE) and a network device, wherein the user equipment (UE) is configured to perform a method of an embodiment of the first aspect of the present disclosure, and the network device is configured to perform a method of an embodiment of the second aspect of the present disclosure. [Effects of the Invention]

[0012] According to the power ramping decision method disclosed herein, for multiple Physical Random Access Channel (PRACH) transmissions in one Random Access Channel (RACH) attempt, the user equipment determines whether to perform power ramping based on the configuration information or protocol of the network device, and proposes a power ramping mechanism for multiple PRACH transmissions, ensuring PRACH coverage and clarifying the operation of the terminal.

[0013] Additional aspects and advantages of the disclosure will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the disclosure. [Brief explanation of the drawings]

[0014] The above contents and / or additional aspects and advantages of the present disclosure will become apparent and be easily understood from the following description of the embodiments taken in conjunction with the drawings. [Figure 1] 1 is a schematic flowchart of a power ramping determination method according to an embodiment of the present disclosure. [Figure 2] 1 is a schematic flowchart of a power ramping determination method according to an embodiment of the present disclosure. [Figure 3]1 is a schematic flowchart of a power ramping determination method according to an embodiment of the present disclosure. [Figure 4] 1 is a schematic flowchart of a power ramping determination method according to an embodiment of the present disclosure. [Figure 5] 1 is a schematic diagram of the interactions of a power ramping decision method according to an embodiment of the present disclosure; [Figure 6] 1 is a schematic block diagram of a power ramping determination apparatus according to an embodiment of the present disclosure; [Figure 7] 1 is a schematic block diagram of a power ramping determination apparatus according to an embodiment of the present disclosure; [Figure 8] 1 is a schematic block diagram of a power ramping determination apparatus according to an embodiment of the present disclosure; [Figure 9] 1 is a structural schematic diagram of a communication device according to an embodiment of the present disclosure; [Figure 10] 1 is a structural schematic diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0015]

[0023] The following detailed description of the embodiments of the present disclosure is provided in the drawings, in which like or similar reference numerals throughout refer to like or similar elements or elements with like or similar functions. The embodiments described below with reference to the drawings are illustrative and are intended to explain the present disclosure, but should not be construed as limiting the present disclosure.

[0016] To extend the coverage of the PRACH channel, the R18 CE WI considers introducing a mechanism for multiple PRACH transmissions in one RACH attempt, and can improve the probability of successful detection by using non-correlated merging, etc. In R15, one RACH attempt transmits only one PRACH.

[0017] Regarding the power allocation priority of multiple UL channels in carrier aggregation (CA) scenarios, R15 concludes as follows:

[0018] When the component carriers (CCs) / uplinks configured for a UE have the same start time, the same PUSCH (Physical Uplink Shared Channel) / PUCCH (Physical Uplink Control Channel) transmission duration, and there are the same physical parameter configuration sets (mumerology) and overlapping transmissions between different CCs / uplinks with one or two PUCCH groups, and the UE is power-limited due to simultaneous transmissions from multiple serving cells, the priority of power allocation is as follows: PRACH transmission on PCell (Primary Cell) > ACK / NACK and / or SR transmission on PUCCH / PUSCH > other UCIs transmission on PUCCH / PUSCH > UCI transmission on PUSCH / UCI not performed on PUSCH > SRS / PRACH transmission on SCell (Secondary Cell).

[0019] 1. At the same priority level, the priority of the PCell is higher than the priority of the SCell.

[0020] 2. To prevent the transmission power from exceeding Pcmax, power reduction or transmission cancellation is first applied to the lowest priority until the combined power is within the Pcmax range, or more precisely, reduction or cancellation is realized by the terminal.

[0021] As a result, if the sum of the uplink transmission powers of all CCs in one slot exceeds the maximum transmission power of the terminal, power allocation is performed according to the above priority, and high-priority channel transmission is first secured. For low-priority channels, whether to transmit by reducing the power or cancel transmission is determined by the terminal implementation.

[0022] R15 introduces a power ramping mechanism for PRACH retransmissions. With each retransmission increment, the PRACH channel increases its transmit power by one step size. The power ramping counter pauses incrementing its count if any of the following three conditions occur: 1. The SSB index for RO selection changes. 2. The spatial filter of the uplink transmission is changed. 3. The current PRACH transmission power is reduced or the transmission is canceled due to power allocation.

[0023] Thus, based on the priority of the power allocation channel in R15, the following can be determined: For a PRACH transmission with the lowest channel priority, power may be reduced or the transmission may be canceled, and R15 clarifies that the power ramping counter of the terminal in this scenario will suspend incrementing by 1, i.e., the current transmission power will be reduced or the transmission will be canceled, and power ramping will not be performed in the next PRACH retransmission.

[0024] However, for scenarios where multiple PRACH transmissions are introduced in the R18 CE WI, it is not clear how the UE should perform power ramping in subsequent RACH attempts when power allocation reduces the PRACH transmission power of one or more of the multiple PRACH transmissions and / or cancels one or more PRACH transmissions.

[0025] Therefore, the present disclosure provides a power ramping determination method, apparatus, and communication device, provides a power ramping mechanism for multiple PRACH transmissions, and clarifies how a terminal performs power ramping when power allocation reduces the PRACH transmission power of any one or more of the multiple PRACH transmissions and / or cancels any one or more PRACH transmissions.

[0026] It should be noted that the solution provided by the present disclosure can be applied to fifth generation mobile communication technology (5G) and subsequent communication technologies, such as advanced fifth generation mobile communication technology (5G-advanced), sixth generation mobile communication technology (6G), etc., and is not limited by the present disclosure.

[0027] The power ramping determination solution provided by the present application will be described in detail below in conjunction with the drawings.

[0028] 1 shows a schematic flowchart of a power ramping decision method according to an embodiment of the present disclosure. As shown in FIG. 1, the method is performed by a user equipment (UE). In the embodiment of the present disclosure, the user equipment (UE) includes, but is not limited to, a smart terminal device, a cellular phone, a wireless device, a handheld, a mobile unit, a vehicle, an in-vehicle device, etc.

[0029] The method may include the following step S101.

[0030] In S101, for multiple physical random access channel (PRACH) transmissions in one random access channel (RACH) attempt, it is determined whether to perform power ramping based on the configuration information or protocol of the network device.

[0031] In embodiments of the present disclosure, network devices include, but are not limited to, switches, routers, bridges, hubs, gateways, network interface cards (NICs), wireless access points (WAPs), base stations, and the like, and are not limited by the present disclosure.

[0032] In addition, in the scenario proposed in the R18 CE WI in which multiple PRACH transmissions are introduced for one RACH attempt, the multiple PRACH transmissions may trigger PRACH retransmission when the terminal does not receive a random access response, or when the terminal does not receive a RAPID corresponding to itself, or when the terminal fails in contention. In this case, if a power ramping mechanism is to be introduced, it is necessary to clarify the terminal's operation, i.e., it is necessary to determine under what conditions the terminal will perform power ramping or under what conditions it will not perform power ramping.

[0033] In an embodiment of the present disclosure, the UE may determine whether to perform power ramping based on configuration or instruction information of a network device, for example, the UE receives configuration or instruction information of a network device, the configuration information instructing the UE to perform power ramping in PRACH retransmissions, the UE performs power ramping, i.e., the count number of a power ramping counter is increased by one, and the PRACH channel increases the transmit power by one step size, and the UE may determine whether to perform power ramping based on a protocol, for example, the protocol specifies that even if the transmit power is reduced or the transmission is canceled due to power allocation in three PRACH transmissions out of eight PRACH transmissions, power ramping is still performed, i.e., the count number of a power ramping counter is still increased by one.

[0034] It should be noted that the solution of the present disclosure is applicable to non-contention random access (CFRA) and contention random access (CBRA), and is not limited in the present disclosure.

[0035] As described above, the power ramping determination method disclosed herein determines whether to perform power ramping for multiple Physical Random Access Channel (PRACH) transmissions in one Random Access Channel (RACH) attempt based on the configuration information or protocol of the terminal network device, proposes a power ramping mechanism for multiple PRACH transmissions, ensures PRACH coverage, and clarifies the operation of the terminal.

[0036] 2 shows a schematic flowchart of a power ramping determination method according to an embodiment of the present disclosure. The method is performed by a UE, and based on the embodiment shown in FIG. 1, the method may include the following steps S201 to S202, as shown in FIG.

[0037] In S201, setting information transmitted from a network device is received.

[0038] Here, the configuration information includes information instructing whether the UE should perform power ramping.

[0039] Furthermore, the configuration information may be carried by RRC signaling or a field in the DCI, for example, configured by the RRC, or a field in the DCI may carry a dynamic indication.

[0040] Furthermore, the configuration information may be implicit or explicit. An explicit configuration message, for example, is to determine to perform power ramping if the information indicated in the configuration message sent from the network device is 1, and to determine not to perform power ramping if the information indicated in the configuration message sent from the network device is 0. An implicit configuration message, for example, is to determine not to perform power ramping if the configuration information is not received or if the configuration information does not carry information instructing the UE to perform power ramping.

[0041] In S202, for multiple physical random access channel (PRACH) transmissions in one random access channel (RACH) attempt, it is determined whether to perform power ramping based on the configuration information or protocol of the network device.

[0042] In some embodiments of the present disclosure, determining whether to perform power ramping based on configuration information of the network device includes determining to perform power ramping in response to receiving configuration information or in response to receiving a configuration message carrying information instructing the UE to perform power ramping, and determining not to perform power ramping in response to not receiving configuration information or in response to receiving a configuration message carrying information instructing the UE not to perform power ramping.

[0043] Here, the configuration message sent by the network to the UE may be dedicated configuration information directly including information instructing the UE whether to perform power ramping, or may be another configuration message sent by the network, and the other configuration information is reused to implicitly instruct the UE whether to perform power ramping. In other words, when starting PRACH retransmission, if the terminal receives a configuration message from the base station or the received configuration message includes information instructing the UE to perform power ramping, the terminal decides to perform power ramping; if the terminal does not receive a configuration message from the base station or the received configuration message does not carry information instructing the UE to perform power ramping, the terminal decides not to perform power ramping.

[0044] In addition, in R15, if only one PRACH is transmitted per RACH attempt and the power allocation reduces the current PRACH transmission power or cancels the transmission, it is determined that no power ramping is performed when initiating PRACH retransmission.

[0045] Furthermore, in an R18 CE WI, in a scenario where multiple PRACH transmissions are introduced in one RACH attempt, power allocation may result in the PRACH transmission power of one or more of the multiple PRACH transmissions being reduced and / or one or more of the PRACH transmissions being canceled. In this case, using the solution of this embodiment, it is possible to determine, based on the configuration or instruction of the base station, whether to perform power ramping when one of the PRACH transmissions is canceled or the transmission power is reduced.

[0046] Optionally, the configuration information sent from the network device may include a PRACH transmission count threshold P. Note that in some alternative embodiments, the PRACH transmission count threshold P may be carried by another message and is not limited by this disclosure.

[0047] Furthermore, the PRACH transmission count threshold P includes a transmission cancellation count threshold K and / or a transmission power reduction count threshold Q, and the UE can determine whether to perform power ramping in the next RACH attempt based on the transmission cancellation count threshold and / or the transmission power reduction count threshold set by the base station. For example, if the number of times PRACH transmissions are canceled exceeds the transmission cancellation threshold, power ramping will not be performed in the next RACH attempt, i.e., the power ramping counter will suspend incrementing its count by one.

[0048] In some embodiments of the present disclosure, determining whether to perform power ramping based on the protocol includes determining to perform power ramping if a first event specified by the protocol occurs.

[0049] Here, the first event is that among the multiple PRACH transmissions, there are m or fewer PRACH transmissions whose transmission power has been reduced or whose transmission has been canceled due to power allocation, the number of PRACH transmissions m is smaller than the number of transmissions n of the multiple PRACH transmissions determined by the terminal, and the value of m is specified by the protocol.

[0050] For example, regarding the transmission of four PRACH transmissions in one RACH attempt, the number of transmissions of the four PRACH transmissions is 8. Among the four PRACH transmissions, if there are m or fewer PRACH transmissions (1, 2, 3, m or fewer PRACH transmissions) whose transmission power is reduced or the transmission is cancelled by power allocation, and the number of PRACH transmission times m is lower than the number of transmissions 8 of a plurality of PRACH transmissions determined by the terminal, that is, when 1 < m < 8, the first event defined by the protocol occurs, and it is determined to perform power ramping during PRACH retransmission, that is, the count number of the power ramping counter increases by 1.

[0051] In an alternative embodiment of the present disclosure, the method includes receiving the candidate transmission times of a plurality of PRACH transmissions transmitted from a network device, and determining n based on the plurality of candidate transmission times.

[0052] Specifically, the base station sets a set of data including a plurality of candidate transmission times for the terminal, and the terminal can determine the number of transmissions n of the plurality of PRACH transmissions by comparing the received power of the measured reference signal with several threshold values. For example, the data includes values such as 2, 4, 8, etc., and the received power of the measured reference signal is within the interval of the third threshold value, whereby the number of transmissions n of the plurality of PRACH transmissions can be determined to be 8.

[0053] In some embodiments, after determining to perform power ramping based on the network configuration message, the UE can further determine whether the first event defined by the protocol has occurred. If the first event defined by the protocol has occurred, it is determined to perform power ramping. Or, if the UE does not receive the network configuration, it determines whether the first event defined by the protocol has occurred, and if the first event defined by the protocol has occurred, it is determined to perform power ramping.

[0054] In some embodiments of the present disclosure, the step of determining whether to perform power ramping based on the protocol further includes the step of determining not to perform power ramping if a second event specified by the protocol occurs.

[0055] Here, the second event is that there is at least one PRACH transmission among the multiple PRACH transmissions whose transmission power has been reduced or whose transmission has been canceled due to power allocation.

[0056] For example, if the number of transmissions of the multiple PRACH transmissions is n, the number of PRACH transmissions whose transmission power is reduced or whose transmission is canceled by power allocation is m, and if 1≦m≦n, it is determined that no power ramping is performed, i.e., the power ramping counter is temporarily stopped from incrementing its count by one.

[0057] It should be noted that in some embodiments, after determining not to perform power ramping based on the network configuration message, the UE may further determine whether a second event specified by the protocol has occurred, and if the second event specified by the protocol has occurred, decide not to perform power ramping; or if the UE does not receive the network configuration, it determines whether a second event specified by the protocol has occurred, and if the second event specified by the protocol has occurred, decide not to perform power ramping.

[0058] As described above, according to the power ramping determination method of the present disclosure, for multiple physical random access channel (PRACH) transmissions in one random access channel (RACH) attempt, if the PRACH transmission power of any one or more of the multiple PRACH transmissions is reduced and / or any one or more PRACH transmissions is canceled, the terminal clarifies how to perform power ramping in subsequent RACH attempts.

[0059] 3 is a schematic flowchart of a power ramping determination method according to an embodiment of the present disclosure. The method is performed by a UE and may include the following steps S301 to S303 based on the embodiment shown in FIG. 1 and / or FIG. 2, as shown in FIG. 3.

[0060] In S301, for multiple physical random access channel (PRACH) transmissions in one random access channel (RACH) attempt, a PRACH transmission count threshold P is determined based on the configuration information or protocol of the network device.

[0061] In an embodiment of the present disclosure, the UE can determine the PRACH transmission count threshold P based on the configuration information of the network device, where P may be transmitted by the network device alone or may be carried in the configuration information transmitted from the network device together with information indicating whether the UE should perform power ramping, and the UE may determine the PRACH transmission count threshold P based on a protocol, which is not limited in the present disclosure.

[0062] Furthermore, the PRACH transmission count threshold P may be a fixed possible value, or may be P=N / 2, P=N-offset, offset=1 / 2 / N / N-1, etc., and is not limited in this disclosure.

[0063] In S302, the number p of PRACH transmissions in which a third event occurs is determined from among the plurality of PRACH transmissions.

[0064] Here, the third event is that the transmission power of the PRACH transmission is reduced or the transmission is cancelled due to power allocation.

[0065] In S303, it is determined whether to perform power ramping based on the relationship between p and P.

[0066] In other words, when the power allocation reduces the transmission power of a PRACH transmission or cancels the transmission, the UE can determine whether to perform power ramping by comparing the PRACH transmission count threshold P with the transmission count p of the PRACH transmission at which the power allocation reduces the transmission power or cancels the transmission.

[0067] In some embodiments, a possible solution for step S303 includes deciding to perform power ramping if p≦P is satisfied, and deciding not to perform power ramping if p>P is satisfied.

[0068] In other words, for no more than P PRACH transmissions, if the power allocation reduces the transmit power or cancels the transmission, it is determined that power ramping will be performed and the power ramping counter is incremented by one, and for more than P PRACH transmissions, if the power allocation reduces the transmit power or cancels the transmission, it is determined that power ramping will not be performed and the power ramping counter is paused from incrementing by one.

[0069] In some embodiments, P includes a power reduction count threshold Q and a transmission cancellation count threshold K, and p includes a number q of PRACH transmissions whose transmission power is reduced due to power allocation and a number k of PRACH transmissions whose transmission is canceled due to power allocation among multiple PRACH transmissions. In this case, possible solutions for step S303 include: determining to perform power ramping if both k≦K and q≦Q are satisfied; and determining not to perform power ramping if any one of k>K and q>Q is satisfied.

[0070] In other words, this feasible solution distinguishes between the case where the PRACH transmission power is reduced and the case where the PRACH transmission power is canceled, and determines whether to perform power ramping based on two thresholds, including a power reduction count threshold Q and a transmission cancellation count threshold K. If the number of PRACH transmissions q whose transmission power is reduced due to power allocation does not exceed the power reduction count threshold Q, and the number of PRACH transmissions k whose transmission is canceled due to power allocation does not exceed the transmission cancellation count threshold K, it decides to perform power ramping, and the power ramping counter increases by one; if the opposite occurs, i.e., if either q exceeds Q or k exceeds K, it decides not to perform power ramping, and the power ramping counter temporarily stops increasing by one.

[0071] In some embodiments, P includes a power reduction count threshold Q and a transmission cancellation count threshold K, and p includes the number q of PRACH transmissions whose transmission power is reduced due to power allocation and the number k of PRACH transmissions whose transmission is canceled due to power allocation among multiple PRACH transmissions. In this case, a possible solution for step S303 may include: determining to perform power ramping if p≦P, q≦Q, and k≦K are all satisfied; and determining not to perform power ramping if any one of p>P, q>Q, and k>K is satisfied.

[0072] In other words, this possible solution determines whether to perform power ramping based on three thresholds, including a PRACH transmission count threshold P, a power reduction count threshold Q, and a transmission cancellation count threshold K. If the number of PRACH transmissions q at which transmission power is reduced due to power allocation does not exceed the power reduction count threshold Q, the number of PRACH transmissions k at which transmission is canceled due to power allocation does not exceed the transmission cancellation count threshold K, and the sum p of q and k does not exceed the PRACH transmission count threshold P, it determines to perform power ramping and increments the count of the power ramping counter by 1. If the opposite occurs, i.e., if q exceeds Q, k exceeds K, or p exceeds P, it determines not to perform power ramping and suspends the power ramping counter from incrementing its count by 1.

[0073] It should be noted that the embodiments of the present disclosure may be implemented alone or in combination with the embodiment shown in FIG. 2 . For example, after determining to perform power ramping based on the network configuration message, the UE may further need to determine whether to perform power ramping based on the relationship between p and P, but this is not limited to this disclosure.

[0074] From the above, it is clarified that the power ramping determination method of the present disclosure enables a UE to determine a PRACH transmission count threshold P based on configuration information or a protocol of a network device, determine the transmission count p of at least one PRACH transmission among multiple PRACH transmissions at which the transmission power of the PRACH transmission will be reduced or the transmission will be canceled through power allocation, and further determine whether to perform power ramping based on the relationship between p and P.

[0075] 4 is a schematic flowchart of a power ramping determination method according to an embodiment of the present disclosure. The method is performed by a network device, and as shown in FIG. 4, the method may include the following step 401. In the embodiment of the present disclosure, the network device may include, but is not limited to, a switch, a router, a bridge, a hub, a gateway, a network interface card (NIC), a wireless access point (WAP), a base station, etc., and the present disclosure is not limited thereto.

[0076] In S401, the setting information is transmitted to the user equipment (UE).

[0077] Here, the configuration information includes information instructing whether the UE should perform power ramping.

[0078] In embodiments of the present disclosure, user equipment includes, but is not limited to, smart terminal devices, cellular phones, wireless devices, handhelds, mobile units, vehicles, in-vehicle devices, and the like.

[0079] In the embodiments of the present disclosure, the configuration information may be carried by RRC signaling or a field in DCI, for example, may be configured directly in the RCC, or may carry some dynamic indication in a field in DCI.

[0080] Specifically, corresponding to the embodiment shown in FIG. 2, for multiple Physical Random Access Channel (PRACH) transmissions in one Random Access Channel (RACH) attempt, network device configuration information is sent to the UE, and the UE can determine whether to perform power ramping based on the network device configuration information.

[0081] Furthermore, the configuration information may be implicit or explicit. An explicit configuration message, for example, is to determine to perform power ramping when the information indicated in the configuration message sent from the network device is 1, and to determine not to perform power ramping when the information indicated in the configuration message sent from the network device is 0. An implicit configuration message, for example, is to determine not to perform power ramping when the UE does not receive configuration information or when the UE receives a message carrying information indicating not to perform power ramping.

[0082] Optionally, the PRACH transmission count threshold P may be carried in the configuration information sent from the network device, or the network device may independently send the PRACH transmission count threshold P to the UE. Correspondingly, in the embodiment shown in FIG. 3, the UE can determine the PRACH transmission count threshold P by receiving the configuration information sent from the network device.

[0083] In some embodiments, the method further includes transmitting candidate transmission times for the plurality of PRACH transmissions to the UE.

[0084] Here, the candidate transmission numbers are used to help the UE determine the transmission number n of the plurality of PRACH transmissions.

[0085] Specifically, corresponding to the embodiment shown in FIG. 2 , the network device sends candidate transmission numbers of the plurality of PRACH transmissions to the UE, and the UE receives the candidate transmission numbers of the plurality of PRACH transmissions sent from the network device, and determines the transmission number n of the plurality of PRACH transmissions based on the candidate transmission numbers.

[0086] As described above, in the power ramping determination method of the present disclosure, a network device sends configuration information to a user equipment (UE), where the configuration information includes information instructing the UE whether to perform power ramping, and the UE can determine whether to perform power ramping based on the configuration information, and a power ramping mechanism for multiple PRACH transmissions is proposed.

[0087] 5 shows a schematic diagram of the interaction of a power ramping determination method according to an embodiment of the present disclosure. As shown in FIG. 5, the embodiment relates to data / signaling interaction in the process in which a network device and a user equipment (UE) perform a positioning method. Based on the embodiment shown in FIGS. 1 to 4, the method includes the following steps 501 to 502:

[0088] In S501, a network device sends configuration information to a user equipment (UE).

[0089] Here, the configuration information includes information instructing whether the UE should perform power ramping.

[0090] At S502, for multiple physical random access channel (PRACH) transmissions in one random access channel (RACH) attempt, the UE determines whether to perform power ramping based on configuration information or protocols of the network device.

[0091] Optionally, the step of determining whether to perform power ramping based on the configuration information of the network device includes the step of deciding to perform power ramping in response to receiving the configuration information or in response to receiving a message carrying information instructing the UE to perform power ramping, and the step of deciding not to perform power ramping in response to not receiving the configuration information or in response to receiving a message carrying information instructing the UE not to perform power ramping.

[0092] Optionally, the step of determining whether to perform power ramping based on the protocol includes a step of determining to perform power ramping when a first event specified by the protocol occurs, where the first event is that, among the multiple PRACH transmissions, there are m or fewer PRACH transmissions whose transmission power has been reduced or whose transmission has been canceled due to power allocation, the number m of PRACH transmissions is less than the number n of transmissions of the multiple PRACH transmissions determined by the terminal, and m is specified by the protocol.

[0093] Optionally, the method further includes the network device transmitting candidate transmission numbers of the plurality of PRACH transmissions to the UE, the UE receiving the candidate transmission numbers of the plurality of PRACH transmissions transmitted from the network device, and determining n based on the plurality of candidate transmission numbers.

[0094] Optionally, the step of determining whether to perform power ramping based on the protocol includes the step of determining not to perform power ramping if a second event specified by the protocol occurs, wherein the second event is the presence of at least one PRACH transmission among the plurality of PRACH transmissions whose transmission power has been reduced or whose transmission has been canceled due to power allocation.

[0095] Optionally, the step of determining whether to perform power ramping based on configuration information or a protocol of the network device further includes the steps of: determining a PRACH transmission count threshold P based on configuration information or a protocol of the network device; determining a transmission count p of a PRACH transmission in which a third event occurs among the plurality of PRACH transmissions; and determining whether to perform power ramping based on a relationship between p and P, wherein the third event is a reduction in transmission power of the PRACH transmission or a cancellation of the transmission due to power allocation.

[0096] Optionally, the method further includes the network device transmitting a PRACH transmission count threshold P to the UE.

[0097] Optionally, determining whether to perform power ramping based on the relationship between p and P includes determining to perform power ramping if p≦P is satisfied, and determining not to perform power ramping if p>P is satisfied.

[0098] Optionally, P includes a power reduction count threshold Q and a transmission cancellation count threshold K, and p includes a number q of PRACH transmissions for which transmission power is reduced due to power allocation and a number k of PRACH transmissions for which transmission is canceled due to power allocation among multiple PRACH transmissions, and the step of determining whether to perform power ramping based on the relationship between p and P includes a step of determining to perform power ramping if both k≦K and q≦Q are satisfied, and a step of determining not to perform power ramping if any one of k>K and q>Q is satisfied.

[0099] Optionally, P includes a power reduction count threshold Q and a transmission cancellation count threshold K, and p includes a number q of PRACH transmissions for which transmission power is reduced due to power allocation and a number k of PRACH transmissions for which transmission is canceled due to power allocation among multiple PRACH transmissions, and the step of determining whether to perform power ramping based on the relationship between p and P includes a step of determining to perform power ramping if p≦P, q≦Q, and k≦K are all satisfied, and a step of determining not to perform power ramping if any one of p>P, q>Q, and k>K is satisfied.

[0100] Note that the above step S501 is an optional step, and in some embodiments, the UE can determine whether to perform power ramping based solely on the protocol, and at this time, the network device does not need to send configuration information to the user equipment (UE).

[0101] The above embodiment and the embodiment illustrated in FIGS. 1 to 4 are based on the same principle, and therefore, for related explanations, please refer to FIGS. 1 to 4, and detailed explanations will be omitted here.

[0102]

[0023] In view of the above, according to the power ramping decision method provided by the embodiments of the present disclosure, for multiple Physical Random Access Channel (PRACH) transmissions in one Random Access Channel (RACH) attempt, the user equipment determines whether to perform power ramping based on the configuration information or protocol of the network device, and a power ramping mechanism for multiple PRACH transmissions is proposed to ensure PRACH coverage and clarify the operation of the terminal.

[0103] In the above embodiments, the methods provided by the embodiments are described from the perspective of network devices and user equipment, respectively. To realize the functions of the methods provided by the above embodiments, the network devices and user equipment may include hardware structures and software modules, and the functions are realized in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Certain functions among the functions can be implemented in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0104] Corresponding to the power ramping determination method provided by the above several embodiments, the present disclosure further provides a power ramping determination device. Since the power ramping determination device provided by the embodiments of the present disclosure corresponds to the power ramping determination method provided by the above several embodiments, the embodiments of the power ramping determination method are also applicable to the power ramping determination device provided by this embodiment, and detailed explanations are omitted in this embodiment.

[0105] FIG. 6 is a structural schematic diagram of a power ramping determination device 600 provided by an embodiment of the present disclosure, which is installed in a user equipment (UE).

[0106] As shown in FIG. 6, the apparatus 600 includes a determination module 610, which determines whether to perform power ramping for multiple physical random access channel (PRACH) transmissions in a single random access channel (RACH) attempt based on configuration information or protocols of a network device.

[0107] According to the power ramping determination device provided by the embodiments of the present disclosure, for multiple Physical Random Access Channel (PRACH) transmissions in one Random Access Channel (RACH) attempt, it can determine whether to perform power ramping based on configuration information or protocols of a network device, thereby ensuring PRACH coverage and clarifying the operation of a terminal.

[0108] In some embodiments, as shown in FIG. 7 , the apparatus 600 further includes a receiving module 620, which is used to receive configuration information sent from a network device, where the configuration information includes information indicating whether the UE should perform power ramping.

[0109] In some embodiments, the decision module 610 specifically determines to perform power ramping in response to receiving configuration information or the configuration information carrying information instructing the UE to perform power ramping, and determines not to perform power ramping in response to not receiving configuration information or the configuration information not carrying information instructing the UE to perform power ramping.

[0110] In some embodiments, the determination module 610 specifically determines to perform power ramping when a first event specified by a protocol occurs, where the first event is that, among the multiple PRACH transmissions, there are m or fewer PRACH transmissions whose transmission power is reduced or whose transmission is canceled due to power allocation, the number m of PRACH transmissions is less than the number n of transmissions of the multiple PRACH transmissions determined by the terminal, and m is specified by a protocol.

[0111] In some embodiments, the receiving module 620 further receives candidate transmission numbers of a plurality of PRACH transmissions sent from the network device and determines n based on the plurality of candidate transmission numbers.

[0112] In some embodiments, the determination module 610 specifically determines not to perform power ramping if a second event specified by the protocol occurs, where the second event is that there is at least one PRACH transmission among the multiple PRACH transmissions whose transmission power is reduced or whose transmission is canceled due to power allocation.

[0113] In some embodiments, the determination module 610 specifically determines a PRACH transmission count threshold P based on configuration information or a protocol of the network device, determines a transmission count p of a PRACH transmission in which a third event occurs among the multiple PRACH transmissions, and determines whether to perform power ramping based on the relationship between p and P, where the third event is that the transmission power of the PRACH transmission is reduced or the transmission is canceled due to power allocation.

[0114] In some embodiments of the present disclosure, determining whether to perform power ramping based on the relationship between p and P includes determining to perform power ramping if p≦P is satisfied, and determining not to perform power ramping if p>P is satisfied.

[0115] In some embodiments, P includes a power reduction count threshold Q and a transmission cancellation count threshold K, p includes a number q of PRACH transmissions for which transmit power is reduced due to power allocation and a number k of PRACH transmissions for which transmission is canceled due to power allocation among multiple PRACH transmissions, and determining whether to perform power ramping based on the relationship between p and P includes determining to perform power ramping if both k≦K and q≦Q are satisfied, and determining not to perform power ramping if any one of k>K and q>Q is satisfied.

[0116] In some embodiments, P includes a power reduction count threshold Q and a transmission cancellation count threshold K, and p includes a number q of PRACH transmissions for which transmission power is reduced due to power allocation and a number k of PRACH transmissions for which transmission is canceled due to power allocation among multiple PRACH transmissions, and determining whether to perform power ramping based on the relationship between p and P includes determining to perform power ramping if p≦P, q≦Q, and k≦K are all satisfied, and determining not to perform power ramping if any one of p>P, q>Q, and k>K is satisfied.

[0117] As described above, according to the power ramping determination device of the present disclosure, for multiple Physical Random Access Channel (PRACH) transmissions in one Random Access Channel (RACH) attempt, the UE determines whether to perform power ramping based on configuration information or a protocol of a network device, and clarifies how the terminal should perform power ramping when power allocation reduces the PRACH transmission power of any one or more of the multiple PRACH transmissions and / or cancels any one or more PRACH transmissions.

[0118] FIG. 8 is a structural schematic diagram of a power ramping determination apparatus 700 provided by an embodiment of the present disclosure, which is configured in a network device.

[0119] As shown in FIG. 8, the apparatus 700 may include a transmitting module 710 that transmits configuration information to a user equipment (UE), where the configuration information includes information indicating whether the UE should perform power ramping.

[0120] According to the power ramping determination device of the present disclosure, configuration information is sent to a user equipment (UE), where the configuration information includes information instructing the UE whether to perform power ramping, so that for multiple physical random access channel (PRACH) transmissions in one random access channel (RACH) attempt, the UE can determine whether to perform power ramping based on the configuration information of a network device, thereby ensuring PRACH coverage and clarifying the operation of the terminal.

[0121] In some embodiments, the transmission module 710 further transmits a PRACH transmission count threshold P to the UE.

[0122] According to the power ramping determination device of the present disclosure, a network device transmits a PRACH transmission count threshold P to a UE, and the UE determines a transmission count p of PRACH transmissions in which a third event occurs among the multiple PRACH transmissions, and determines whether to perform power ramping based on the relationship between p and P, where the third event is a reduction in transmission power of the PRACH transmission or a cancellation of the transmission due to power allocation, and clarifies how the terminal performs power ramping when the PRACH transmission power of any one or more of the multiple PRACH transmissions is reduced and / or any one or more PRACH transmissions are canceled due to power allocation.

[0123] The present application further provides a communication system, which is applied to a core network, where the communication system may be a long term evolution (LTE) system, a fifth generation (5G) mobile communication system, a 5G new radio (NR) system, or other new mobile communication systems, etc.

[0124] The communication system includes a network device and user equipment (UE), where the UE is configured to perform any one of the methods of the embodiments shown in Figures 1 to 3 above, and the network device is configured to perform the method of the embodiment shown in Figure 4.

[0125]

[0013] From the above, in the communication system provided by the embodiments of the present disclosure, for multiple Physical Random Access Channel (PRACH) transmissions in one Random Access Channel (RACH) attempt, the user equipment can determine whether to perform power ramping based on the configuration information or protocol of the network device, and a power ramping mechanism for multiple PRACH transmissions is proposed to ensure PRACH coverage and clarify the operation of the terminal.

[0126] 9, which is a structural schematic diagram of a communication device 800 provided by an embodiment of the present application. The communication device 800 may be a network device, a user equipment, a chip, a chip system, a processor, etc. that supports the network device to implement the above method, or a chip, a chip system, a processor, etc. that supports the user equipment to implement the above method. The device is used to implement the method described in the above method embodiment, and please refer to the description in the above method embodiment for details.

[0127] The communication device 800 may include one or more processors 801. The processor 801 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processor. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control measurement devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute computer programs, and process data of the computer programs.

[0128] Optionally, the communication device 800 may include one or more memories 802 in which a computer program 804 is stored, and the processor 801 executes the computer program 804 to cause the communication device 800 to perform the method described in the method embodiments above. Optionally, data may be stored in the memory 802. The communication device 800 and the memory 802 may be provided separately or integrated together.

[0129] Optionally, the communication device 800 may further include a transceiver 805 and an antenna 806. The transceiver 805 may also be referred to as a transceiver unit, transceiver, or transceiver circuit, and is used to realize a transmission and reception function. The transceiver 805 may include a receiver and a transmitter, and the receiver may also be referred to as a receiving device or receiving circuit, and is used to realize a reception function, and the transmitter may also be referred to as a transmitting device or transmitting circuit, and is used to realize a transmission function.

[0130] Optionally, the communication device 800 may further include one or more interface circuits 807. The interface circuit 807 receives and transmits code instructions to the processor 801. The processor 801 executes the code instructions to cause the communication device 800 to perform the methods described in the method embodiments above.

[0131] In one implementation, the processor 801 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used to read and write code / data, or the transceiver circuit, interface, or interface circuit may be used to transmit or communicate signals.

[0132] In one implementation, the processor 801 may store a computer program 803, which executes in the processor 801, thereby causing the communication device 800 to perform the methods described in the above method embodiments. The computer program 803 may be fixed to the processor 801, in which case the processor 801 may be implemented in hardware.

[0133] In one implementation, the communications device 800 may include circuitry capable of implementing the transmit, receive, or communication functions of the method embodiments described above. The processors and transceivers described in this disclosure may be integrated into an integrated circuit (IC), an analog IC, a radio frequency integrated circuit (RFIC), a mixed-signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, or the like. The processors and transceivers may be fabricated using a variety of IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide semiconductor (nMOS), p-type metal oxide semiconductor (PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaS), and the like.

[0134] The communication device in the above description of the embodiment may be a network device or user equipment, but the scope of the communication device in the description of this application is not limited thereto, and the structure of the communication device may not be limited by Figure 17. The communication device may be an independent device or part of a larger device. For example, the measurement device may be as follows: (1) An independent integrated circuit IC or chip, or a chip system or subsystem; (2) a set having one or more ICs, optionally including a storage component for storing data, computer programs; (3) ASIC, e.g., modem, (4) Modules that can be embedded into other devices; (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handhelds, mobile units, in-vehicle devices, network devices, cloud devices, artificial intelligence devices, etc. (6)Others.

[0135] When the communication device is a chip or a chip system, please refer to the structural schematic diagram of the chip shown in Figure 10. The chip shown in Figure 10 includes a processor 901 and an interface 902. Here, the number of processors 901 may be one or more, and the number of interfaces 902 may be more than one.

[0136] Optionally, the chip further includes memory 903 for storing necessary computer programs and data.

[0137] The present application further provides a computer storage medium having stored thereon computer-executable instructions, which, when executed by a processor, implement the functionality of any one of the method embodiments described above.

[0138] As will be appreciated by those skilled in the art, the various illustrative logical blocks and steps enumerated in the embodiments of the present disclosure can be realized by electronic hardware, computer software, or a combination of both. Whether such functions are realized by hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can realize the functions using various methods for each specific application, but such realization should not be understood as exceeding the scope of protection of the embodiments of the present disclosure.

[0139] In the above embodiments, all or a portion thereof can be implemented in software, hardware, firmware, or any combination thereof. When implemented using software, all or a portion thereof can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer programs are loaded and executed on a computer, the computer programs generate, in whole or in part, the flow or functions described in the embodiments of the present disclosure. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer programs may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer program may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, radio, microwave, etc.) methods. The computer-readable storage medium may be any available medium accessible to a computer, or a data storage device such as a server, data center, or the like, integrating one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)).

[0140] As will be appreciated by those skilled in the art, the various numerals, such as first, second, etc., used herein are merely divisions made for ease of explanation and do not limit the scope of the embodiments of the present application, nor do they represent a priority order.

[0141] "At least one" in this application may be explained as "one or more," and "more" may be two, three, four or more, and is not limited by this application. In the embodiments of this application, for one technical feature, the technical features in the category are distinguished by "first," "second," "third," "A," "B," "C," and "D," etc., and there is no priority or size order between the technical features explained by "first," "second," "third," "A," "B," "C," and "D."

[0142] As used herein, the terms "machine-readable medium" and "computer-readable medium" include any computer program product, apparatus, and / or device for providing machine instructions and / or data to a programmable processor (e.g., magnetic disk, optical disk, memory, programmable logic device (PLD)), and a machine-readable medium for receiving machine instructions in the form of a machine-readable signal. The term "machine-readable signal" refers to any signal for providing machine instructions and / or data to a programmable processor.

[0143] The systems and techniques described herein may be implemented in a computing system including a back-end component (e.g., a data server), or a computing system including a middleware component (e.g., an application server), or a computing system including a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user interacts with embodiments of the systems and techniques described herein), or any combination of such back-end, middleware, and front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.

[0144] A computer system may include clients and servers. Clients and servers are generally remote from each other and typically interact through a communication network. The relationship of client and server is created by computer programs running on corresponding computers and having a client-server relationship to each other.

[0145] It should be understood that steps can be rearranged, added, or deleted using the various types of flows shown above. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order. This specification is not limited as long as the desired results of the technical solution disclosed in this application can be achieved.

[0146] Furthermore, various embodiments of the present application may be implemented alone or in combination with other embodiments, provided the solution allows.

[0147] The embodiments or examples of the present disclosure are not exhaustive, but merely examples of some embodiments or examples, and do not specifically limit the scope of protection of the present disclosure. Unless there is a contradiction, each step in an embodiment or example can be implemented as an independent embodiment, and each step can be arbitrarily combined. For example, a solution that omits some steps in a specific embodiment or example can also be implemented as an independent embodiment, the order of steps in a specific embodiment or example can be arbitrarily changed, and alternative methods or alternative examples in an embodiment or example can be arbitrarily combined, and each embodiment or example can be arbitrarily combined. For example, some or all steps of different embodiments or examples can be arbitrarily combined, and one embodiment or example can be arbitrarily combined with alternative methods or alternative examples of other embodiments or examples.

[0148] In some embodiments or examples, the terms "responsive to," "when," "when," "upon," "when," "if," and the like in this disclosure are interchangeable.

[0149] In some embodiments or examples, the disclosure may include at least one of the following technical solutions, depending on the case, using expressions such as "A or B," "A and / or B," "at least one of A and B," "at least one of A or B," "A in one case, B in another case," "A in response to one case, B in response to another case," etc.: executing A independently of B, i.e., executing A in some embodiments or examples; executing B independently of A, i.e., executing B in some embodiments or examples; selectively executing A and B, i.e., selectively executing A and B in some embodiments or examples; executing both A and B, i.e., executing A and B in some embodiments or examples. The same applies when there are more branches, such as A, B, and C.

[0150] In some embodiments or examples, the terms "including A," "comprising A," "used to indicate A," and "carrying A" in the present disclosure may be understood as directly carrying A or indirectly indicating A.

[0151] In all embodiments or examples of the present disclosure, the terms first, second, third, etc., and related terms do not indicate an order, but are merely limitations for distinguishing different features.

[0152] Furthermore, each element, each row, or each column in a table according to the present disclosure can be implemented as an independent embodiment, and any combination of elements, any row, or any column can be implemented as an independent embodiment.

[0153] As can be understood by those skilled in the art, the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are implemented in a hardware manner or a software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can realize the described functions using different methods according to each specific application, and such realization should not be understood as going beyond the scope of the present application.

[0154] As will be understood by those skilled in the art, for convenience and conciseness of explanation, the specific operation processes of the above-described systems, devices and units may refer to the corresponding processes of the above-described method embodiments, and detailed explanations will be omitted here.

[0155] The above are specific embodiments of the present application, but the scope of protection of the present application is not limited thereto, and any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application, and therefore the scope of protection of the present application should conform to the scope of protection of the claims.

Claims

1. 1. A power ramping decision method performed by a user equipment (UE), comprising: determining whether to perform power ramping for a plurality of physical random access channel (PRACH) transmissions in a single random access channel (RACH) attempt based on network device configuration information or a protocol; 10. A method for determining power ramping, comprising:

2. The power ramping determination method includes: receiving configuration information transmitted from the network device; The configuration information is for indicating whether the UE should perform power ramping.

2. The method of claim 1, wherein the power ramping determination is performed in accordance with claim 1.

3. Determining whether to perform power ramping based on configuration information of the network device includes: determining to perform power ramping in response to receiving the configuration information or in response to receiving the configuration information carrying information instructing the UE to perform power ramping; determining not to perform power ramping in response to the configuration information not being received or in response to the configuration information being received carrying information indicating that the UE should not perform power ramping.

3. A method for determining power ramping according to claim 1 or 2.

4. Determining whether to perform power ramping based on the protocol includes: determining to perform power ramping when a first event defined by the protocol occurs; The first event is that, among the plurality of PRACH transmissions, there are m or less PRACH transmissions whose transmission power has been reduced or whose transmission has been canceled due to power allocation, where m is smaller than the number n of transmissions of the plurality of PRACH transmissions determined by the terminal, and m is specified by a protocol.

4. The method for determining power ramping according to claim 1.

5. The power ramping determination method includes: receiving candidate transmission numbers for the plurality of PRACH transmissions sent from a network device; determining n based on the plurality of candidate transmission times.

5. The method of claim 4, wherein the power ramping determination method is

6. Determining whether to perform power ramping based on the protocol includes: determining not to perform power ramping if a second event specified by the protocol occurs; The second event is that there is at least one PRACH transmission among the plurality of PRACH transmissions whose transmission power is reduced or whose transmission is canceled due to power allocation.

4. The method for determining power ramping according to claim 1.

7. determining whether to perform power ramping based on configuration information or a protocol of the network device, determining a PRACH transmission count threshold P based on configuration information or a protocol of a network device; determining a number p of PRACH transmissions in which a third event occurs among the plurality of PRACH transmissions; determining whether to perform power ramping based on the relationship between p and P; The third event is a reduction in transmit power of a PRACH transmission or a cancellation of the transmission due to power allocation. A method for determining power ramping according to any one of claims 1 to 6.

8. Determining whether to perform power ramping based on the relationship between p and P includes: determining to perform power ramping if p≦P is satisfied; determining not to perform power ramping if p>P is satisfied; 8. The method of claim 7, wherein the power ramping determination method is

9. The P includes a power reduction count threshold Q and a transmission cancellation count threshold K, and the p includes a number q of PRACH transmissions in which transmission power is reduced by power allocation and a number k of PRACH transmissions in which transmission is canceled by power allocation in the plurality of PRACH transmissions, Determining whether to perform power ramping based on the relationship between p and P includes: determining to perform power ramping if both k≦K and q≦Q are satisfied; determining not to perform power ramping if any one of k>K and q>Q is satisfied; 8. The method of claim 7, wherein the power ramping determination method is

10. Determining whether to perform power ramping based on the relationship between p and P includes: determining to perform power ramping if p≦P, q≦Q, and k≦K are all satisfied; determining not to perform power ramping if any one of p>P, q>Q, k>K is satisfied; 10. The method of claim 9, wherein the power ramping determination method is

11. 1. A power ramping decision method performed by a network device, comprising: transmitting configuration information to a user equipment (UE); The configuration information is for indicating whether the UE should perform power ramping.

10. A method for determining power ramping, comprising:

12. The power ramping determination method includes: transmitting candidate transmission times for a plurality of Physical Random Access Channel (PRACH) transmissions to the UE; The candidate transmission number is for assisting the UE in determining the transmission number n of the plurality of PRACH transmissions.

12. The method of claim 11, wherein the power ramping determination method is

13. The power ramping determination method includes: and further comprising transmitting a PRACH transmission count threshold P to the UE.

13. A method for determining power ramping according to claim 11 or 12.

14. a user equipment including a decision module; the decision module: determining whether to perform power ramping for multiple physical random access channel (PRACH) transmissions in a single random access channel (RACH) attempt based on network device configuration information or protocols; 1. A user equipment comprising:

15. A network device, comprising: a transmitting module; The transmitting module: Sending the configuration information to a user equipment (UE); The configuration information is for indicating whether the UE should perform power ramping. A network device comprising:

16. 1. A communication device, comprising: a transceiver, a memory, and a processor; the processors are connected to the transceiver and the memory, respectively, and are configured to execute computer-executable instructions in the memory to control radio signal transmission and reception of the transceiver, and to implement the method according to any one of claims 1 to 13. A communication device characterized by:

17. A computer storage medium having computer-executable instructions stored thereon, When the computer-executable instructions are executed by a processor, the method according to any one of claims 1 to 13 is achieved. A computer storage medium comprising:

18. A communication system including a user equipment (UE) and a network device, The UE performs a method according to any one of claims 1 to 10, The network device executes the method according to any one of claims 11 to 13. A communication system comprising:

Images