CN109392048B - Signal sending method, receiving method and device - Google Patents

Signal sending method, receiving method and device Download PDF

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Publication number
CN109392048B
CN109392048B CN201710687413.5A CN201710687413A CN109392048B CN 109392048 B CN109392048 B CN 109392048B CN 201710687413 A CN201710687413 A CN 201710687413A CN 109392048 B CN109392048 B CN 109392048B
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uplink carrier
signal
uplink
terminal device
sending
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CN109392048A (en
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郭志恒
谢信乾
许斌
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201710687413.5A priority Critical patent/CN109392048B/en
Priority to PCT/CN2018/099934 priority patent/WO2019029696A1/en
Publication of CN109392048A publication Critical patent/CN109392048A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H04W36/362—Conditional handover

Abstract

The embodiment of the application provides a signal sending method, a signal receiving method and a signal sending device. The signal sending method comprises the following steps: the terminal equipment sends a first signal to the network equipment on a first uplink carrier; and under the condition that the first parameter determined by the terminal equipment meets the preset condition, the terminal equipment sends a second signal to the network equipment on a second uplink carrier and stops sending a first signal to the network equipment on a first uplink carrier, the frequency of the first uplink carrier is different from that of the second uplink carrier, and the first signal and the second signal both comprise random preamble sequences. The terminal equipment can try to switch the uplink carrier to send the random access sequence by itself in the random access process, and the success rate of the random access is improved. The method provided by the embodiment of the application can be applied to communication systems, such as V2X, LTE-V, V2V, Internet of vehicles, MTC, IoT, LTE-M, M2M, Internet of things and the like.

Description

Signal sending method, receiving method and device
Technical Field
The embodiment of the present application relates to the field of communications technologies, and in particular, to a signal sending method, a signal receiving method, and a signal sending device.
Background
In the development and evolution process of a wireless communication system, a New radio interface (NR) system and a Long Term Evolution (LTE) system in a fifth-Generation communication system (5th-Generation, 5G) may be deployed simultaneously in a frequency band below 6 GHz. The NR system is most likely to be deployed at the 3.5GHz frequency first, but the uplink coverage of the system at that frequency cannot match the downlink coverage, so that the uplink coverage of the NR system is limited. The LTE system is deployed at 1.8GHz frequency. Since the 1.8GHz band has lower channel fading and better coverage, in order to enhance the uplink coverage of the NR system, the uplink of the NR system may also be deployed on the uplink frequency band of the LTE system, that is, the NR system and the LTE system share the 1.8GHz uplink frequency band. Moreover, the uplink of the NR system may also be deployed on a dedicated uplink frequency band, where the dedicated uplink frequency band is not deployed with the LTE system or other communication systems, and the uplink frequency band may be referred to as an added Uplink (UL) carrier.
In a process of communication between the terminal device and the network device, the network device may configure multiple resources for the terminal device to perform Random Access, where the resources may be referred to as Physical Random Access Channel (PRACH) resources. When the terminal equipment needs random access, one resource is selected from the configured multiple PRACH resources to be used for sending a random Preamble sequence (Preamble).
At present, a terminal device can only send a random preamble sequence on one uplink carrier in a random access process. However, when the uplink carrier is heavily loaded or the channel condition is poor, the random access success rate of the terminal device will be low.
Disclosure of Invention
The embodiment of the application provides a signal sending method, a signal receiving method and a signal receiving device, and the success rate of random access is improved.
In a first aspect, an embodiment of the present application provides a method for sending a signal, where the method includes: the terminal device sends a first signal to the network device on the first uplink carrier. And under the condition that the first parameter determined by the terminal equipment meets the preset condition, the terminal equipment sends a second signal to the network equipment on the second uplink carrier and stops sending the first signal to the network equipment on the first uplink carrier, wherein the first parameter comprises first power used for the terminal equipment to send the first signal on the first uplink carrier and/or first times of sending the first signal on the first uplink carrier by the terminal equipment.
By the signal sending method provided by the first aspect, in the random access process, when the power and/or the sent times of the terminal device sending the first signal on the first uplink carrier meet a certain condition, the terminal device can automatically switch the uplink carrier to send the random access sequence, so that the success rate of random access is improved.
Optionally, in a possible implementation manner of the first aspect, if the first parameter includes a first power used for the terminal device to send the first signal on the first uplink carrier, the determining, by the terminal device, the first parameter meets a preset condition, where the determining includes: the first power is greater than a first preset value.
Optionally, in a possible implementation manner of the first aspect, if the first parameter includes a first number of times that the terminal device has sent the first signal on the first uplink carrier, the determining, by the terminal device, that the first parameter meets a preset condition includes: the first number equals a second preset value.
Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the second signal to the network device on the second uplink carrier, the method further includes: the terminal equipment receives second indication information sent by the network equipment, wherein the second indication information indicates a first initial power of the terminal equipment for sending the first signal on the first uplink carrier and a second initial power of the terminal equipment for sending the second signal on the second uplink carrier. And the terminal equipment determines the initial power used for transmitting the second signal on the second uplink carrier according to the second indication information.
With the method for transmitting signals provided by this possible embodiment, the terminal device may determine the initial power for transmitting the second signal according to the second indication information transmitted by the network device.
Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the second signal to the network device on the second uplink carrier, the method further includes: the terminal device determines that the initial power used to transmit the second signal on the second uplink carrier is equal to the power at which the terminal device most recently transmitted the first signal on the first uplink carrier.
With the transmission method of signals provided by this possible embodiment, the terminal device sets the power at which the first signal was last transmitted as the initial power at which the second signal was transmitted.
Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the second signal to the network device on the second uplink carrier, the method further includes: the terminal device determines a first sending count value, wherein the first sending count value is 1 or the value of the first times is added with 1. And the terminal equipment determines the initial power used for transmitting the second signal on the second uplink carrier according to the first transmission count value.
With the signal transmission method provided by this possible embodiment, the terminal device may determine the initial power for transmitting the second signal according to the first transmission count value.
Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the first signal to the network device on the first uplink carrier, the method further includes: the terminal equipment receives first indication information sent by the network equipment, wherein the first indication information indicates a first maximum sending frequency of the terminal equipment for sending a first signal on a first uplink carrier and a second maximum sending frequency of a second signal on a second uplink carrier.
By the signal transmission method provided by the possible embodiment, the terminal device may determine whether the first parameter meets the preset condition according to the first maximum transmission frequency included in the first indication information, so that the uplink carrier is switched to transmit the random access sequence when the preset condition is met, and the random access success rate is improved.
Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the second signal to the network device on the second uplink carrier, the method may further include: the terminal device determines an initial number of transmissions of the second signal on the second uplink carrier.
Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the first signal to the network device on the first uplink carrier, the method may further include: the terminal equipment determines a first uplink carrier.
Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the second signal to the network device on the second uplink carrier and stops sending the first signal to the network device on the first uplink carrier, the method may further include: and the terminal equipment determines the second uplink carrier according to the incidence relation between the first uplink carrier and the second uplink carrier.
By the signal sending method provided by the possible embodiment, the terminal device can determine the second uplink carrier according to the incidence relation between the first uplink carrier and the second uplink carrier, so that the rationality and the success rate of carrier selection after switching are improved.
Optionally, in a possible implementation manner of the first aspect, if the terminal device is out of synchronization in the uplink, the method may further include: and when the terminal equipment changes from uplink desynchronization to uplink synchronization, the terminal equipment sends a third signal on a third uplink carrier.
By the signal sending method provided by the possible embodiment, the terminal device sends the third signal on the third uplink carrier, so that the success rate of random access after resynchronization of the terminal device is improved.
In a second aspect, an embodiment of the present application provides a signal receiving method, where the method includes: the network equipment sends first indication information and/or second indication information to the terminal equipment, the first indication information indicates a first maximum sending frequency of the terminal equipment for sending a first signal on a first uplink carrier and a second maximum sending frequency of the terminal equipment for sending a second signal on a second uplink carrier, and the second indication information indicates a first initial power of the terminal equipment for sending the first signal on the first uplink carrier and a second initial power of the terminal equipment for sending the second signal on the second uplink carrier. The network equipment receives a first signal sent by the terminal equipment on a first uplink carrier or a second signal sent by the terminal equipment on a second uplink carrier.
Optionally, in a possible implementation manner of the second aspect, the network device may send the third indication information to the terminal device. The third indication information indicates a first maximum power at which the terminal device transmits the first signal on the first uplink carrier and a second maximum power at which the terminal device transmits the second signal on the second uplink carrier.
Optionally, in a possible implementation manner of the second aspect, the network device may send fourth indication information to the terminal device, where the fourth indication information indicates an association relationship between the first uplink carrier and the second uplink carrier or a condition that needs to be satisfied by the association relationship.
In a third aspect, an embodiment of the present application provides a terminal device, which includes a sending module and a processing module. A sending module, configured to send a first signal to a network device on a first uplink carrier. And under the condition that the first parameter determined by the processing module meets a preset condition, the sending module is configured to send a second signal to the network device on the second uplink carrier, and stop sending the first signal to the network device on the first uplink carrier, where the first parameter includes a first power used for the sending module to send the first signal on the first uplink carrier and/or a first number of times that the sending module has sent the first signal on the first uplink carrier.
Optionally, in a possible implementation manner of the third aspect, if the first parameter includes a first power used by the sending module to send the first signal on the first uplink carrier, the first parameter satisfies a preset condition, and the method includes: the first power is greater than a first preset value.
Optionally, in a possible implementation manner of the third aspect, if the first parameter includes a first number of times that the sending module has sent the first signal on the first uplink carrier, the first parameter satisfies a preset condition, and the method includes: the first number equals a second preset value.
Optionally, in a possible implementation manner of the third aspect, the apparatus further includes a receiving module. The receiving module is configured to receive second indication information sent by the network device, where the second indication information indicates a first initial power of the sending module for sending the first signal on the first uplink carrier and a second initial power of the sending module for sending the second signal on the second uplink carrier. The processing module is further configured to determine an initial power for transmitting the second signal on the second uplink carrier according to the second indication information.
Optionally, in a possible implementation manner of the third aspect, the processing module is further configured to: determining that the initial power for transmitting the second signal on the second uplink carrier is equal to the power at which the transmitting module last transmitted the first signal on the first uplink carrier.
Optionally, in a possible implementation manner of the third aspect, the processing module is further configured to: and determining a first sending count value, wherein the first sending count value is 1 or the value of the first times is added with 1. An initial power for transmitting a second signal on a second uplink carrier is determined according to the first transmit count value.
Optionally, in a possible implementation manner of the third aspect, the apparatus further includes a receiving module. The receiving module is used for: the method comprises the steps of receiving first indication information sent by network equipment, wherein the first indication information indicates a first maximum sending frequency of a sending module for sending a first signal on a first uplink carrier and a second maximum sending frequency of a second signal on a second uplink carrier.
In a fourth aspect, an embodiment of the present application provides a network device, which includes a sending module and a receiving module. A sending module, configured to send first indication information and/or second indication information to a terminal device, where the first indication information indicates a first maximum sending frequency of the terminal device for sending a first signal on a first uplink carrier and a second maximum sending frequency of the terminal device for sending a second signal on a second uplink carrier, and the second indication information indicates a first initial power of the terminal device for sending the first signal on the first uplink carrier and a second initial power of the terminal device for sending the second signal on the second uplink carrier. The receiving module is configured to receive a first signal sent by the terminal device on a first uplink carrier, or a second signal sent by the terminal device on a second uplink carrier.
In a fifth aspect, an embodiment of the present application provides a terminal device, where the terminal device includes a processor, a memory, and a transceiver, where the memory is used to store instructions, the transceiver is used to communicate with other devices, and the processor is used to execute the instructions stored in the memory, so as to enable the terminal device to perform the method of the first aspect.
In a sixth aspect, embodiments of the present application provide a network device, which includes a processor, a memory and a transceiver, where the memory is used to store instructions, the transceiver is used to communicate with other devices, and the processor is used to execute the instructions stored in the memory, so as to enable the terminal device to execute the method of the second aspect.
With reference to the first aspect and the possible embodiments of the first aspect, the second aspect and the possible embodiments of the second aspect, the third aspect and the possible embodiments of the third aspect, the fourth aspect and the possible embodiments of the fourth aspect, the fifth aspect and the possible embodiments of the fifth aspect, and the sixth aspect and the possible embodiments of the sixth aspect, the frequency of the first uplink carrier is different from the frequency of the second uplink carrier, and both the first signal and the second signal include a random preamble sequence.
In a seventh aspect, an embodiment of the present application provides a program, which when executed by a processor is configured to perform the method of the first aspect.
In an eighth aspect, embodiments of the present application provide a program product, such as a computer-readable storage medium, including the program of the seventh aspect.
In a ninth aspect, embodiments of the present application provide a computer-readable storage medium, which stores instructions that, when executed on a computer, cause the computer to perform the method of the first aspect.
In a tenth aspect, an embodiment of the present application provides a program, which when executed by a processor is configured to perform the method of the second aspect.
In an eleventh aspect, embodiments of the present application provide a program product, for example, a computer-readable storage medium, including the program of the tenth aspect.
In a twelfth aspect, embodiments of the present application provide a computer-readable storage medium having instructions stored therein, which when executed on a computer, cause the computer to perform the method of the second aspect.
The embodiment of the application provides a signal sending method, a signal receiving method and a signal sending device. The terminal device is configured with at least two uplink carriers. In the random access process, when the terminal equipment sends the uplink signal on one uplink carrier and meets a certain condition, the uplink carrier can be switched, and the uplink signal is sent on the other uplink carrier, so that the success rate of sending the uplink signal is improved, and the random access success rate is further improved in the random process.
Drawings
FIG. 1 is a diagram of a network architecture suitable for use with embodiments of the present application;
fig. 2A is a schematic structural diagram of a carrier configuration applicable to the embodiment of the present application;
fig. 2B is a schematic structural diagram of another carrier configuration applicable to the embodiment of the present application;
fig. 3 is a flowchart of a signal transmission method according to an embodiment of the present application;
fig. 4 is a flowchart of a signal receiving method according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a terminal device according to a first embodiment of the present application;
fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a terminal device according to a second embodiment of the present application;
fig. 8 is a schematic structural diagram of a network device according to a second embodiment of the present application.
Detailed Description
The signal transmitting method and the signal receiving method provided by the embodiment of the application can be applied to a 5G communication system and other communication systems. The number of uplink carriers configured for the terminal device by the network device in the communication system is at least two, and the frequencies of the at least two uplink carriers are different. The at least two uplink carriers may belong to the same cell or different cells. Fig. 1 is a diagram of a network architecture suitable for use in embodiments of the present application. As shown in fig. 1, the system includes a network device and a terminal device, and the network device has a certain signal coverage. Within the signal coverage, the network device is configured with an uplink carrier and a downlink carrier. The terminal equipment can send data and control signaling to the network equipment through the time-frequency resource of the uplink carrier. The network device may send data and control signaling to the terminal device through the time-frequency resource of the downlink carrier. In fig. 1, a carrier F1 is an uplink carrier and a downlink carrier, a carrier F2 is an uplink carrier, and a carrier F3 is an uplink carrier. The frequency of the carrier F2 and the carrier F3 is lower than that of the carrier F1, and the carrier F2 and the carrier F3 have lower channel fading and better coverage. In the LTE and NR coexistence scenario, carrier F1 may be an NR band carrier, and the band may be 3.5 GHz. The carrier F2 may be an LTE band carrier, and the frequency band may be 1.8 GHz. The carrier F3 may be an added uplink (SUL) carrier, where the SUL carrier does not deploy LTE or other communication systems.
The following describes a carrier configuration to which the embodiments of the present application are applicable by way of specific examples.
Fig. 2A is a schematic structural diagram of a carrier configuration applicable to the embodiment of the present application. As shown in fig. 2A, it is an LTE and NR uplink sharing scenario. The network equipment configures two uplink carriers for the terminal equipment, wherein the two uplink carriers comprise an NR carrier and an LTE uplink carrier. The NR may operate in a Time Division Duplex (TDD) mode, and the NR carrier may be a TDD carrier, and the frequency F3 may be 3.5 GHz. LTE may operate in Frequency Division Duplex (FDD) mode, and the LTE uplink carrier may be an FDD carrier, and its Frequency F1 may be 1.75 GHz. And the uplink carrier shared by the NR and the LTE is an LTE uplink carrier. The terminal device may perform uplink communication and downlink communication with the NR network device through the NR carrier, and may perform uplink communication with the NR network device through the LTE uplink carrier. In fig. 2A, D denotes a downlink time slot, U denotes an uplink time slot, and numerals 0 to 9 denote subframe numbers.
Fig. 2B is another structural diagram of a carrier configuration applicable to the embodiment of the present application. As shown in fig. 2B, a scenario of NR carriers and at least one SUL carrier. The network device configures three uplink carriers for the terminal device, including an NR carrier, an SUL1 carrier, and an SUL 2 carrier. The NR may operate in a TDD mode, the NR carrier may be a TDD carrier, and the frequency F3 may be 3.5 GHz. The terminal device may perform uplink communication and downlink communication with the NR network device through the NR carrier, and may perform uplink communication with the NR network device through the SUL1 carrier or the SUL 2 carrier. In fig. 2B, D represents a downlink time slot, U represents an uplink time slot, and numerals 0 to 9 represent subframe numbers.
The signal sending method and the signal receiving method provided by the embodiment of the application aim at solving the technical problem that in the prior art, in the random access process, a terminal device can only send a random leader sequence on one uplink carrier, so that the random access success rate is low.
The terminal device related to the embodiment of the present application may be a wireless terminal such as a Mobile phone and a tablet computer, where the wireless terminal includes a device for providing voice and/or data service to a user, and the terminal device may also be a handheld device, a vehicle-mounted device, a wearable device, a computing device with a wireless connection function, and various forms of user equipment UE, a Mobile Station (MS), and a terminal (terminal), and the embodiment of the present application is not limited.
The network device according to the embodiment of the present application may be a device that manages wireless network resources in any of a 5G communication system and other communication systems. For example: the network device may be a 5G base station (G Node B, gNB) in a 5G communication system, a radio transceiver device (NeXt Node, NX) in a 5G communication system, or a Transmit and receive Node (TRP) in a 5G communication system, which is not limited in the embodiment of the present application.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 3 is a flowchart of a signal sending method according to an embodiment of the present application. In the signal transmission method provided in this embodiment, the execution subject may be a terminal device. As shown in fig. 3, the method for transmitting a signal according to this embodiment may include:
s101, the terminal equipment sends a first signal to the network equipment on a first uplink carrier.
Wherein the first signal may comprise a random preamble sequence.
Specifically, the network device configures at least two uplink carriers for the terminal device. The first uplink carrier represents an uplink carrier before the terminal device switches itself, and may be any one of at least two uplink carriers configured for the terminal device by the network device. The first signal refers to an uplink signal sent by the terminal device on the first uplink carrier, and the embodiment does not limit specific information included in the first signal.
And S102, under the condition that the first parameter determined by the terminal equipment meets the preset condition, the terminal equipment sends a second signal to the network equipment on the second uplink carrier, and stops sending the first signal to the network equipment on the first uplink carrier.
The first parameter may include a first power used for the terminal device to transmit the first signal on the first uplink carrier and/or a first number of times that the terminal device has transmitted the first signal on the first uplink carrier, where a frequency of the first uplink carrier is different from a frequency of the second uplink carrier, and the second signal may include a random preamble sequence.
Specifically, the second uplink carrier represents an uplink carrier after the terminal device switches itself, and may be any one of at least two uplink carriers configured for the terminal device by the network device, except for the first uplink carrier. The second signal refers to an uplink signal sent by the terminal device on the second uplink carrier, and the embodiment does not limit the specific information included in the second signal.
When the first power of the terminal device for sending the first signal on the first uplink carrier and/or the first number of times that the terminal device has sent the first signal on the first uplink carrier satisfy the preset condition, the terminal device switches from sending the first signal on the first uplink carrier to sending the second signal on the second uplink carrier, and the first signal and the second signal both include a random preamble sequence.
As can be seen, in the method for sending a signal according to this embodiment, in the random access process, when the power and/or the number of times that the terminal device sends the first signal on the first uplink carrier satisfy a certain condition, the terminal device may switch the uplink carrier to send the random access sequence by itself. Compared with the prior art that the random access sequence can be sent on only one uplink carrier, the signal sending method provided by the embodiment improves the success rate of random access.
Optionally, as a first implementation manner of the preset condition, if the first parameter includes a first power used for the terminal device to send the first signal on the first uplink carrier, the determining, by the terminal device, that the first parameter meets the preset condition may include:
the first power is greater than a first preset value, and the first preset value is a positive number.
Specifically, the terminal device determines the power to be used for transmitting the first signal before transmitting the first signal on the first uplink carrier. Generally, the power value is larger as the uplink channel condition is worse and the interference is larger. When the first signal sent by the terminal device on the first uplink carrier and the network device are not received last time, the power for sending the first signal determined by the terminal device at this time may be increased. When the first power determined by the terminal device is increased to a certain extent and is already greater than the first preset value, it may be considered that the network device cannot receive the first signal even if the first power is continuously increased, and uplink interference is increased. Therefore, when the first power is greater than the first preset value, the terminal device can be switched to the second uplink carrier by itself to transmit the second signal, so that the signal transmission success rate is improved, and the random access success rate is improved in the random access process.
In this embodiment, the value of the first preset value and the manner in which the terminal obtains the first preset value are not limited. Optionally, the first preset value may be a preset value inside the terminal device. Optionally, the first preset value may be configured by the network device for the terminal device. For example, before the terminal device transmits the first signal to the network device on the first uplink carrier, the terminal device may receive third indication information transmitted by the network device, where the third indication information indicates a first maximum power at which the terminal device transmits the first signal on the first uplink carrier and a second maximum power at which the terminal device transmits the second signal on the second uplink carrier. At this time, the first preset value is the first maximum power. The first maximum power and the second maximum power may be the same or different. The third indication information may include only one maximum power when the first maximum power is the same as the second maximum power.
Optionally, as a second implementation manner of the preset condition, if the first parameter includes a first number of times that the terminal device has sent the first signal on the first uplink carrier, the determining, by the terminal device, that the first parameter meets the preset condition may include:
the first time is equal to a second preset value, and the second preset value is a positive integer.
Specifically, the terminal device may attempt to transmit the first signal multiple times on the first uplink carrier. When the first signal sent by the terminal device on the first uplink carrier is not received by the network device last time, the terminal device may continue to send the first signal on the first uplink carrier. However, the terminal device does not transmit without limitation. When the number of times that the terminal device transmits the first signal on the first uplink carrier reaches a certain degree and is already equal to the second preset value, it may be considered that the network device cannot receive the first signal even if the terminal device continues to transmit. Therefore, when the first time is equal to the second preset value, the terminal device can be switched to the second uplink carrier by itself to transmit the second signal, so that the signal transmission success rate is improved, and the random access success rate is improved in the random access process.
In this embodiment, the value of the second preset value and the manner in which the terminal obtains the second preset value are not limited. Optionally, the second preset value may be a preset value inside the terminal device. Optionally, the second preset value may be configured by the network device for the terminal device. For example, before the terminal device transmits the first signal to the network device on the first uplink carrier, the terminal device may receive first indication information transmitted by the network device, where the first indication information indicates a first maximum number of transmissions of the terminal device for transmitting the first signal on the first uplink carrier and a second maximum number of transmissions of the terminal device for transmitting the second signal on the second uplink carrier. At this time, the second preset value is the first maximum number of transmissions. The first maximum number of transmissions and the second maximum number of transmissions may be the same or different. The first indication information may include only one maximum transmission number when the first maximum transmission number is the same as the second maximum transmission number.
Optionally, as a third implementation manner of the preset condition, if the first parameter includes a first power used for the terminal device to send the first signal on the first uplink carrier and a first number of times that the terminal device has sent the first signal on the first uplink carrier, the determining, by the terminal device, the first parameter meets the preset condition, which may include:
the first power is greater than a first preset value, and the first time is equal to a second preset value.
Optionally, the first preset value and the second preset value may be configured by the base station at will. For example, the first preset value may be a value not exceeding the maximum transmission power of the terminal. The second preset value may be any positive integer.
Optionally, in the signal sending method provided in this embodiment, in S102, before the terminal device sends the second signal to the network device on the second uplink carrier, the method may further include:
the terminal device determines an initial power for transmitting a second signal on a second uplink carrier.
The initial power for sending the second signal refers to the power for the terminal device to send the second signal for the first time on the second uplink carrier.
As a first implementation manner, the initial power of the second signal may be a value preset inside the terminal device. The value of this value is not limited in this embodiment.
As a second implementation manner, the determining, by the terminal device, an initial power for transmitting the second signal on the second uplink carrier may include:
the terminal equipment receives second indication information sent by the network equipment, wherein the second indication information indicates a first initial power of the terminal equipment for sending the first signal on the first uplink carrier and a second initial power of the terminal equipment for sending the second signal on the second uplink carrier.
And the terminal equipment determines the initial power used for transmitting the second signal on the second uplink carrier according to the second indication information.
The second indication information may be implemented in various ways.
Optionally, the second indication information includes a first initial power of the terminal device for transmitting the first signal on the first uplink carrier and a second initial power of the terminal device for transmitting the second signal on the second uplink carrier. At this time, the terminal device may determine, according to the second indication information, that the initial power used for transmitting the second signal on the second uplink carrier is the second initial power. The first initial power and the second initial power may be the same or different. The second indication information may include only one initial power when the first initial power is the same as the second initial power.
Optionally, the second indication information may include a first related parameter for the terminal device to determine the initial power for transmitting the first signal on the first uplink carrier, and a second related parameter for the terminal device to determine the initial power for transmitting the second signal on the second uplink carrier. The implementation manner of the relevant parameter is not limited in this embodiment, and any parameter that is sent to the terminal device by the existing network device and used for determining the transmission power by the terminal device may be used. The first correlation parameter may be the same as or different from the second correlation parameter. The second indication information may include only one set of the related parameters when the first related parameter is the same as the second related parameter.
The related parameters included in the second indication information are explained by way of example below.
The relevant parameters may include the sequence initial received target power (identified as preamberneitialreceivedtargetpower). The terminal equipment calculates the sequence receiving TARGET POWER (marked as PREAMBLE _ RECEIVED _ TARGET _ POWER) according to preamberImitialReceiveddTapper by adopting the formula (1). And then calculating according to the path loss value by adopting a formula (2) to obtain the initial power for sending the first signal on the first uplink carrier or the initial power for sending the second signal on the second uplink carrier.
PREAMBLE _ RECEIVED _ TARGET _ POWER ═ preambelnitial ReceivedTargetPower + DELTA _ PREAMBLE equation (1)
Wherein, DELTA _ PREAMBLE is a predetermined parameter of the terminal device. The information may be preset or may be notified to the terminal device by the network device.
Transmit Power PREAMBLE receiveved TARGET Power + PL equation (2)
Wherein Transmit _ Power represents the initial Power of the terminal device for transmitting the first signal or the second signal. PL represents a path loss value between the terminal device and the network device, which may be obtained by the terminal device through measurement or may be pre-configured by the network device.
As a third implementation manner, the determining, by the terminal device, the initial power for transmitting the second signal on the second uplink carrier may include:
the terminal device determines that the initial power used to transmit the second signal on the second uplink carrier is equal to the power at which the terminal device most recently transmitted the first signal on the first uplink carrier.
As a fourth implementation manner, the determining, by the terminal device, the initial power for transmitting the second signal on the second uplink carrier may include:
the terminal device determines a first sending count value, wherein the first sending count value is 1 or the value of the first times is added with 1.
And the terminal equipment determines the initial power used for transmitting the second signal on the second uplink carrier according to the first transmission count value.
This is explained in detail below by way of example.
It is assumed that the correlation parameter includes a sequence initial received target power (preambelnitial receivedtargetpower). And the terminal equipment calculates the sequence receiving TARGET POWER (marked as PREAMBLE _ RECEIVED _ TARGET _ POWER) according to the preamberImitialReceiveddTapper by adopting the formula (3). And then, according to the path loss value, calculating by using the formula (2) to obtain the initial power for transmitting the first signal on the first uplink carrier or the initial power for transmitting the second signal on the second uplink carrier.
PREAMBLE_RECEIVED_TARGET_POWER＝preambleInitialReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_TRANSMISSION_COUNTER–1)*powerRampingStep (3)
Here, PREAMBLE _ transition _ COUNTER represents a TRANSMISSION count value. powerRampingStep represents a power ramp step value, a parameter predetermined for the terminal device. The information may be preset or may be notified to the terminal device by the network device.
It should be noted that other parameters in the existing method for calculating the transmission power by the terminal device may also be understood as the transmission count value, which is not particularly limited in this embodiment.
Optionally, in the signal sending method provided in this embodiment, in S102, before the terminal device sends the second signal to the network device on the second uplink carrier, the method may further include:
the terminal device determines an initial number of transmissions of the second signal on the second uplink carrier.
The initial number of times of transmitting the second signal refers to an initial value of the number of times that the terminal device has transmitted the second signal on the second uplink carrier. The number of initial transmissions by the terminal device to transmit the second signal on the second uplink carrier affects the number of times the terminal device can also transmit the second signal on the second uplink carrier. The initial number of transmissions may be 0 or greater than 0.
As a first implementation manner, the initial transmission number of times that the terminal device determines to transmit the second signal on the second uplink carrier is 0.
As a second implementation manner, the determining, by the terminal device, the initial transmission number of times for transmitting the second signal on the second uplink carrier may include:
if the first number of times that the terminal device has sent the first signal on the first uplink carrier is less than the second maximum number of times that the terminal device has sent the second signal on the second uplink carrier, the terminal device determines that the initial number of times that the terminal device sends the second signal on the second uplink carrier is the first number of times.
Optionally, in the signal sending method provided in this embodiment, in S101, before the terminal device sends the first signal to the network device on the first uplink carrier, the method may further include:
the terminal equipment determines a first uplink carrier.
Specifically, the network device configures at least two uplink carriers for the terminal device, and therefore, the terminal device needs to determine a first uplink carrier among the at least two uplink carriers.
Optionally, the terminal device may determine the first uplink carrier according to priorities of at least two uplink carriers, where the priorities may be configured for the terminal device and may also be configured for the network device. Taking fig. 2 as an example, assuming that the priority of the NR carrier is higher than that of the LTE uplink carrier, the NR carrier may be determined to be the first uplink carrier.
Optionally, the terminal device may determine the first uplink carrier according to a measurement result on the downlink carrier. Taking fig. 2 as an example, NR carriers are uplink carriers and downlink carriers, so that the terminal device can perform downlink measurement on the NR carriers. Assuming that the measurement result of the NR carrier is greater than the preset threshold, the terminal device may determine that the NR carrier is the first uplink carrier. Assuming that the measurement result of the NR carrier is smaller than the preset threshold, the terminal device may determine that the LTE uplink carrier is the first uplink carrier. The value of the preset threshold is not limited in this embodiment.
Optionally, in the signal sending method provided in this embodiment, in S102, before the terminal device sends the second signal to the network device on the second uplink carrier and stops sending the first signal to the network device on the first uplink carrier, the method may further include:
and the terminal equipment determines the second uplink carrier according to the incidence relation between the first uplink carrier and the second uplink carrier.
In this embodiment, the association relationship between the first uplink carrier and the second uplink carrier and the manner in which the terminal device obtains the association relationship are not limited.
Optionally, the association relationship or a condition that the association relationship needs to satisfy may be preset in the terminal device. For example, the condition that the association relation needs to satisfy may be: a first carrier of high frequency is associated with a second carrier of lower frequency than the first carrier frequency. For example, the network device configures 3 uplink carriers for the terminal device, where the frequencies are F1, F2, and F3, and F1> F2> F3. The association relationship determined by the terminal device may be: f1 is associated with F2, F3, and F2 is associated with F3. Assuming that the first uplink carrier is F1, the second uplink carrier determined by the terminal device according to the association relationship may be F2 or F3. Assuming that the first uplink carrier is F2, the second uplink carrier determined by the terminal device according to the association relationship may be F3. Optionally, if there are multiple second carriers, each second carrier may also be configured with a priority, for example, the priority decreases in the order of carrier frequency from high to low. Also exemplified above, F1 is associated with F2, F3. Since F2> F3, the priority of F2 is higher than that of F3. Assuming that the first uplink carrier is F1, the second uplink carrier determined by the terminal device according to the association relationship may be F2.
Optionally, the association relationship between the first uplink carrier and the second uplink carrier may also be that the network device is configured to the terminal device in advance. For example, before the terminal device sends the second signal to the network device on the second uplink carrier, the terminal device may receive fourth indication information sent by the network device, where the fourth indication information indicates an association relationship between the first uplink carrier and the second uplink carrier or a condition that needs to be satisfied by the association relationship. For example, the network device configures 3 uplink carriers for the terminal device, where the frequencies are F1, F2, and F3, respectively, and F1> F2> F3. The fourth indication may include that F1 is associated with F3, and F2 is associated with F3. Assuming that the first uplink carrier is F1, the second uplink carrier determined by the terminal device according to the association relationship may be F3. For another example, the fourth indication information may include a condition that the association needs to satisfy. The principle is similar to the above description and is not repeated here.
Optionally, the signal sending method provided in this embodiment, if the terminal device is out of synchronization in the uplink, may further include:
and when the terminal equipment changes from uplink desynchronization to uplink synchronization, the terminal equipment sends a third signal on a third uplink carrier.
The third signal refers to an uplink signal sent by the terminal device on a third uplink carrier, and the third signal may include a random preamble sequence. The present embodiment does not limit other information included in the third signal.
Optionally, as a first implementation manner of the third uplink carrier, the third uplink carrier may be an uplink carrier for the terminal device to send the uplink signal before uplink is out of synchronization.
Optionally, as a second implementation manner of the third uplink carrier, if the uplink carrier, in which the terminal device sends the uplink signal before uplink step-out, is the first uplink carrier, the third uplink carrier may be the second uplink carrier.
In the implementation mode, due to uplink desynchronization of the terminal, the success rate of signal sending can be improved by sending the uplink signal through switching the carrier, and further the success rate of random access is improved in the process of random access.
Optionally, as a third implementation manner of the third uplink carrier, if the network device configures two uplink carriers for the terminal device and the uplink carrier where the terminal device sends the uplink signal before uplink step loss is the second uplink carrier, the third uplink carrier may be the first uplink carrier.
In this implementation manner, although the terminal device has switched the uplink carrier, the first uplink carrier is switched to the second uplink carrier, but due to uplink desynchronization of the terminal, the success rate of sending signals can be improved by switching the uplink carrier again to send uplink signals, and further the success rate of random access is improved in the random access process.
Optionally, as a fourth implementation manner of the third uplink carrier, if the network device configures at least three uplink carriers for the terminal device, and the uplink carrier of the terminal device that sends the uplink signal before the uplink is out of synchronization is the second uplink carrier, the third uplink carrier may be any uplink carrier, except the first uplink carrier and the second uplink carrier, of the at least three uplink carriers.
In this implementation manner, due to uplink desynchronization of the terminal, the success rate of sending signals can be improved by switching to the uplink carrier which has not been switched before to send uplink signals, and further the success rate of random access is improved in the random access process.
The embodiment provides a signal sending method, which includes: the terminal equipment sends a first signal to the network equipment on the first uplink carrier, and under the condition that the first parameter determined by the terminal equipment meets the preset condition, the terminal equipment sends a second signal to the network equipment on the second uplink carrier and stops sending the first signal to the network equipment on the first uplink carrier. According to the signal sending method provided by the embodiment, when the terminal device is configured with at least two uplink carriers, when the terminal device sends an uplink signal on one uplink carrier and meets a certain condition, the uplink carrier can be switched, and the uplink signal is sent on the other uplink carrier, so that the success rate of sending the uplink signal is improved, and further the random access success rate is improved in a random process.
Fig. 4 is a flowchart of a signal receiving method according to an embodiment of the present application. In the signal receiving method provided in this embodiment, the execution main body may be a network device. As shown in fig. 4, the signal receiving method provided in this embodiment may include:
s201, the network equipment sends the first indication information and/or the second indication information to the terminal equipment.
The first indication information indicates a first maximum number of times that the terminal equipment sends the first signal on the first uplink carrier and a second maximum number of times that the terminal equipment sends the second signal on the second uplink carrier, and the second indication information indicates a first initial power of the terminal equipment that sends the first signal on the first uplink carrier and a second initial power of the terminal equipment that sends the second signal on the second uplink carrier. Wherein the frequency of the first uplink carrier is different from the frequency of the second uplink carrier, and the first signal and the second signal both comprise random preamble sequences.
Specifically, the network device configures at least two uplink carriers for the terminal device. The first uplink carrier represents an uplink carrier before the terminal device switches itself, and may be any one of at least two uplink carriers configured for the terminal device by the network device. The second uplink carrier represents an uplink carrier after the terminal device switches itself, and may be any one of at least two uplink carriers configured for the terminal device by the network device, except the first uplink carrier. The first uplink carrier has a frequency different from a frequency of the second uplink carrier.
And the network equipment sends the first indication information and/or the second indication information to the terminal equipment. The first indication information actually indicates the maximum transmission times of the terminal device for transmitting the uplink signals on all the uplink carriers configured for the terminal device by the network device. The second indication information actually indicates the initial power of the terminal device for transmitting the uplink signal on all the uplink carriers configured for the terminal device by the network device. And through the first indication information, a basis is provided for the terminal equipment to determine the second uplink carrier. And through the second indication information, providing a basis for the terminal equipment to determine the initial power for transmitting the second signal on the second uplink carrier.
The description of the first indication information and the second indication information refers to the embodiment shown in fig. 3, which has similar principles and is not repeated herein.
S202, the network device receives a first signal sent by the terminal device on the first uplink carrier, or a second signal sent by the terminal device on the second uplink carrier.
Specifically, for a specific terminal device, the uplink signal is usually transmitted on only one uplink carrier. If the terminal device does not switch the uplink carrier, the terminal device transmits a first signal on the first uplink carrier. Correspondingly, the network device receives a first signal sent by the terminal device on the first uplink carrier. The terminal device transmits a second signal on a second uplink carrier if the terminal device switches the uplink carrier. Correspondingly, the network device receives a second signal sent by the terminal device on the second uplink carrier.
It should be noted that the network device has a certain signal coverage area, and there may be more than one terminal device communicating with the network device in the signal coverage area. Therefore, for the case where a plurality of terminal devices communicate with the network device, the network device may receive uplink signals transmitted by the respective terminal devices on the first uplink carrier and on the second uplink carrier.
Optionally, the network device may send the third indication information to the terminal device.
Wherein the third indication information indicates a first maximum power at which the terminal device transmits the first signal on the first uplink carrier and a second maximum power at which the terminal device transmits the second signal on the second uplink carrier.
For the description of the third indication information, reference is made to the embodiment shown in fig. 3, which has similar principles and is not described herein again.
Optionally, the network device may send fourth indication information to the terminal device, where the fourth indication information indicates an association relationship between the first uplink carrier and the second uplink carrier or a condition that needs to be satisfied by the association relationship.
For the description of the fourth indication information, reference is made to the embodiment shown in fig. 3, which has similar principles and will not be described again here.
In the signal receiving method provided in this embodiment, in the random access process, the terminal device may switch the uplink carrier to send the uplink signal, and the network device may receive the uplink signal sent by the terminal device on the first uplink carrier or on the second uplink carrier. Compared with the prior art that the terminal device can only send the uplink signal on one uplink carrier, the signal receiving method provided by the embodiment improves the success rate of random access.
Fig. 5 is a schematic structural diagram of a terminal device according to a first embodiment of the present application. The terminal device provided in the embodiment of the present application is configured to execute the signal sending method provided in the embodiment shown in fig. 3. As shown in fig. 5, the terminal device provided in the embodiment of the present application may include:
a sending module 11, configured to send a first signal to a network device on a first uplink carrier.
Under the condition that the first parameter determined by the processing module 12 satisfies the preset condition, the sending module 11 is configured to send a second signal to the network device on the second uplink carrier, and stop sending the first signal to the network device on the first uplink carrier, where the first parameter includes a first power used for the sending module 11 to send the first signal on the first uplink carrier and/or a first number of times that the sending module 11 has sent the first signal on the first uplink carrier, a frequency of the first uplink carrier is different from a frequency of the second uplink carrier, and the first signal and the second signal both include a random preamble sequence.
Optionally, if the first parameter includes a first power used by the sending module 11 to send the first signal on the first uplink carrier, the first parameter satisfies a preset condition, including:
the first power is greater than a first preset value.
Optionally, if the first parameter includes a first number of times that the sending module 11 has sent the first signal on the first uplink carrier, the first parameter satisfies a preset condition, including:
the first number equals a second preset value.
Optionally, a receiving module 13 is further included.
The receiving module 13 is configured to receive second indication information sent by the network device, where the second indication information indicates a first initial power of the sending module 11 for sending the first signal on the first uplink carrier and a second initial power of the sending module 11 for sending the second signal on the second uplink carrier.
The processing module 12 is further configured to determine an initial power for transmitting the second signal on the second uplink carrier according to the second indication information.
Optionally, the processing module 12 is further configured to:
it is determined that the initial power used to transmit the second signal on the second uplink carrier is equal to the power at which the transmitting module 11 last transmitted the first signal on the first uplink carrier.
Optionally, the processing module 12 is further configured to:
and determining a first sending count value, wherein the first sending count value is 1 or the value of the first times is added with 1.
An initial power for transmitting a second signal on a second uplink carrier is determined according to the first transmit count value.
Optionally, a receiving module 13 is further included. The receiving module 13 is configured to:
receiving first indication information sent by the network device, where the first indication information indicates a first maximum number of times that the sending module 11 sends the first signal on the first uplink carrier and a second maximum number of times that the sending module sends the second signal on the second uplink carrier.
The terminal device provided in the embodiment of the present application is configured to execute the signal sending method provided in the embodiment of the method shown in fig. 3, and the technical principle and the technical effect are similar, which are not described herein again.
Fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application. The network device provided in the embodiment of the present application is configured to execute the signal receiving method provided in the embodiment shown in fig. 4. As shown in fig. 6, the network device provided in the embodiment of the present application may include:
a sending module 21, configured to send first indication information and/or second indication information to the terminal device, where the first indication information indicates a first maximum sending frequency of the terminal device for sending the first signal on the first uplink carrier and a second maximum sending frequency of the terminal device for sending the second signal on the second uplink carrier, and the second indication information indicates a first initial power of the terminal device for sending the first signal on the first uplink carrier and a second initial power of the terminal device for sending the second signal on the second uplink carrier. Wherein the frequency of the first uplink carrier is different from the frequency of the second uplink carrier, and the first signal and the second signal both comprise random preamble sequences.
The receiving module 22 is configured to receive a first signal sent by the terminal device on the first uplink carrier, or a second signal sent by the terminal device on the second uplink carrier.
The network device provided in the embodiment of the present application is configured to execute the signal receiving method provided in the embodiment of the method shown in fig. 4, and the technical principle and the technical effect are similar, which are not described herein again.
Fig. 7 is a schematic structural diagram of a terminal device according to a second embodiment of the present application, and as shown in fig. 7, the terminal device includes a processor 31, a memory 32, and a transceiver 33, where the memory 32 is used to store instructions, the transceiver 33 is used to communicate with other devices, and the processor 31 is used to execute the instructions stored in the memory 32, so that the terminal device executes the signal sending method according to the second embodiment shown in fig. 3.
Fig. 8 is a schematic structural diagram of a network device according to a second embodiment of the present application, and as shown in fig. 8, the network device includes a processor 41, a memory 42, and a transceiver 43, where the memory 42 is used to store instructions, the transceiver 43 is used to communicate with other devices, and the processor 41 is used to execute the instructions stored in the memory 42, so that the network device executes the signal receiving method according to the second embodiment shown in fig. 4.
It is understood that the processor used in the network device or the terminal device in the present application may be a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (15)

1. A method for transmitting a signal, comprising:
the terminal equipment sends a first signal to the network equipment on a first uplink carrier;
under the condition that a first parameter determined by the terminal device meets a preset condition, the terminal device sends a second signal to the network device on a second uplink carrier, and stops sending the first signal to the network device on the first uplink carrier, wherein the first parameter comprises first power used for the terminal device to send the first signal on the first uplink carrier and/or first times of sending the first signal on the first uplink carrier by the terminal device, the frequency of the first uplink carrier is different from that of the second uplink carrier, and the first signal and the second signal both comprise random preamble sequences;
when the terminal equipment changes from uplink desynchronization to uplink synchronization, the terminal equipment sends an uplink signal on a third uplink carrier, wherein the uplink signal comprises a random leader sequence;
if the uplink carrier of the terminal equipment sending the uplink signal before the uplink is out of step is the first uplink carrier, the third uplink carrier is the second uplink carrier;
if the network equipment configures two uplink carriers for the terminal equipment and the uplink carrier of the terminal equipment sending the uplink signal before uplink desynchronization is a second uplink carrier, the third uplink carrier is a first uplink carrier;
if the network device configures at least three uplink carriers for the terminal device, and the uplink carrier of the terminal device that sends the uplink signal before uplink step-out is the second uplink carrier, the third uplink carrier is any uplink carrier of the at least three uplink carriers except the first uplink carrier and the second uplink carrier.
2. The method according to claim 1, wherein if the first parameter includes a first power for the terminal device to transmit the first signal on the first uplink carrier, the first parameter determined by the terminal device satisfies a preset condition, which includes:
the first power is greater than a first preset value.
3. The method according to claim 1, wherein if the first parameter includes a first number of times that the terminal device has sent the first signal on the first uplink carrier, the first parameter determined by the terminal device satisfies a preset condition, which includes:
the first number of times is equal to a second preset value.
4. The method according to any of claims 1 to 3, wherein before the terminal device transmits the second signal to the network device on the second uplink carrier, the method further comprises:
the terminal device receives second indication information sent by the network device, wherein the second indication information indicates a first initial power of the terminal device for sending the first signal on the first uplink carrier and a second initial power of the terminal device for sending the second signal on the second uplink carrier;
and the terminal equipment determines the initial power used for sending the second signal on the second uplink carrier according to the second indication information.
5. The method according to any of claims 1 to 3, wherein before the terminal device transmits the second signal to the network device on the second uplink carrier, the method further comprises:
the terminal device determines that the initial power used for transmitting the second signal on the second uplink carrier is equal to the power of the terminal device which transmitted the first signal on the first uplink carrier last time.
6. The method according to any of claims 1 to 3, wherein before the terminal device transmits the second signal to the network device on the second uplink carrier, the method further comprises:
the terminal equipment determines a first sending count value, wherein the first sending count value is 1 or the value of the first time is added with 1;
and the terminal equipment determines the initial power used for sending the second signal on the second uplink carrier according to the first sending count value.
7. The method according to any of claims 1 to 3, wherein before the terminal device transmits the first signal to the network device on the first uplink carrier, the method further comprises:
the terminal device receives first indication information sent by the network device, wherein the first indication information indicates a first maximum sending frequency of the terminal device for sending the first signal on the first uplink carrier and a second maximum sending frequency of the terminal device for sending the second signal on the second uplink carrier.
8. A terminal device, comprising:
a sending module, configured to send a first signal to a network device on a first uplink carrier;
when a first parameter determined by the processing module satisfies a preset condition, the sending module is configured to send a second signal to the network device on a second uplink carrier, and stop sending the first signal to the network device on the first uplink carrier, where the first parameter includes a first power used by the sending module to send the first signal on the first uplink carrier and/or a first number of times that the sending module has sent the first signal on the first uplink carrier, a frequency of the first uplink carrier is different from a frequency of the second uplink carrier, and the first signal and the second signal both include a random preamble sequence;
the sending module is further configured to send, by the terminal device, an uplink signal on a third uplink carrier when the terminal device changes from uplink out-of-step to uplink synchronous, where the uplink signal includes a random preamble sequence;
if the uplink carrier of the terminal equipment sending the uplink signal before the uplink is out of step is the first uplink carrier, the third uplink carrier is the second uplink carrier;
if the network equipment configures two uplink carriers for the terminal equipment and the uplink carrier of the terminal equipment sending the uplink signal before uplink desynchronization is a second uplink carrier, the third uplink carrier is a first uplink carrier;
if the network device configures at least three uplink carriers for the terminal device, and the uplink carrier of the terminal device that sends the uplink signal before uplink step-out is the second uplink carrier, the third uplink carrier is any uplink carrier of the at least three uplink carriers except the first uplink carrier and the second uplink carrier.
9. The terminal device of claim 8, wherein if the first parameter includes a first power for the sending module to send the first signal on the first uplink carrier, the first parameter satisfies a preset condition, which includes:
the first power is greater than a first preset value.
10. The terminal device of claim 8, wherein if the first parameter includes a first number of times that the sending module has sent the first signal on the first uplink carrier, the first parameter satisfies a preset condition, which includes:
the first number of times is equal to a second preset value.
11. The terminal device according to any one of claims 8 to 10, further comprising a receiving module;
the receiving module is configured to receive second indication information sent by the network device, where the second indication information indicates a first initial power for the sending module to send the first signal on the first uplink carrier and a second initial power for the sending module to send the second signal on the second uplink carrier;
the processing module is further configured to determine, according to the second indication information, an initial power used for sending the second signal on the second uplink carrier.
12. The terminal device according to any one of claims 8 to 10, wherein the processing module is further configured to:
determining that an initial power used for transmitting the second signal on the second uplink carrier is equal to a power at which the transmitting module last transmitted the first signal on the first uplink carrier.
13. The terminal device according to any one of claims 8 to 10, wherein the processing module is further configured to:
determining a first sending count value, wherein the first sending count value is 1 or the value of the first time is added with 1;
determining an initial power for transmitting the second signal on the second uplink carrier according to the first transmission count value.
14. The terminal device according to any one of claims 8 to 10, further comprising a receiving module; the receiving module is used for:
receiving first indication information sent by the network device, where the first indication information indicates a first maximum number of times that the sending module sends the first signal on the first uplink carrier and a second maximum number of times that the sending module sends the second signal on the second uplink carrier.
15. A computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1-7.
CN201710687413.5A 2017-08-11 2017-08-11 Signal sending method, receiving method and device Active CN109392048B (en)

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CN201710687413.5A CN109392048B (en) 2017-08-11 2017-08-11 Signal sending method, receiving method and device
PCT/CN2018/099934 WO2019029696A1 (en) 2017-08-11 2018-08-10 Signal transmission method and receiving method and apparatus

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CN109392048B true CN109392048B (en) 2022-05-13

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