WO2024164964A1

WO2024164964A1 - Communication method and communication apparatus

Info

Publication number: WO2024164964A1
Application number: PCT/CN2024/075670
Authority: WO
Inventors: 张莉莉; 彭金磷
Original assignee: 华为技术有限公司
Priority date: 2023-02-10
Filing date: 2024-02-04
Publication date: 2024-08-15
Also published as: CN118510060A

Abstract

Communication methods and a communication apparatus. In a method, in a scenario where only an uplink is present or the uplink predominates, a terminal device can refer to the transmit power of first random access sequences transmitted by the terminal device and the signal strength of the first random access sequences received by a network device, so as to determine the path loss value of a beam transmitting the first random access sequences, thereby enabling the terminal device to set, on the basis of the path loss value, an appropriate uplink signal transmit power on a path corresponding to the beam, so as to reduce unnecessary energy consumption.

Description

Communication method and communication device

This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 10, 2023, with application number 202310145198.1 and application name “Communication Method and Communication Device”, the entire contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the field of communications, and more specifically, to a communication method and a communication device.

Background Art

In the scenario where millimeter wave is used as a supplementary uplink, beam alignment is required based on the uplink beam. Due to the small number of downlink resources, it is impossible to rely on the synchronization signal block (SS blocks, SSB) detection in time for random access. Especially when there is no downlink, the random access of the terminal device has no reference beam and can only start polling and sending beams from any selected direction, which may lead to a large amount of scanning overhead, increase device power consumption, and take a long time to achieve beam alignment.

At present, a possible solution is provided for the above-mentioned problem. In this solution, a new random access mechanism is introduced, and the indication information of the uplink signal direction for subsequent beam refinement can be added to the random access response (RAR). The indication information of the uplink signal direction for subsequent beam refinement is indicated by the relevant information of the successfully detected random preamble. The relevant information of the successfully detected preamble is used to identify the direction of the successfully detected preamble (that is, the direction of the beam sending the preamble). When the terminal device learns the direction of the successfully detected preamble, it can send the uplink signal in this direction in a targeted manner, reduce the scanning overhead of the terminal device, and achieve beam alignment as soon as possible.

However, currently, how to set the transmission power of the uplink signal when the terminal device performs uplink signal beam scanning on the corresponding path has become a problem that needs to be solved urgently.

Summary of the invention

The embodiments of the present application provide a sub-band configuration method and a communication device, which enable a terminal device to set an appropriate transmission power on a corresponding path to send an uplink signal, thereby reducing unnecessary energy consumption.

In the first aspect, a communication method is provided. The method can be executed by a terminal device, or can also be executed by a component of the terminal device (such as a chip or circuit). There is no limitation on this. For the sake of ease of description, the following is explained by taking execution by a terminal device as an example.

The method may include: a terminal device sends M first random access sequences to a second network device; the terminal device receives first information and second information from the first network device or the second network device, the first information includes identification information of N first random access sequences among the M first random access sequences, the identification information is associated with a beam for transmitting the corresponding first random access sequence, and the second information includes signal strengths of the N first random access sequences received by the second network device, where N is a positive integer; the terminal device determines a path loss value on a first beam according to a transmission power of a second random access sequence and a signal strength of a second random access sequence received by the second network device, the first beam being a beam for transmitting a second random access sequence, and the second random access sequence being one of the N random access sequences; the terminal device sends an uplink signal to the second network device on a second beam according to a first power, the second beam is associated with the first beam, and the first power is determined based on the path loss value.

In the above technical solution, in a scenario where there is only uplink or uplink is dominant, the terminal device can refer to the transmission power of the first random access sequence and the signal strength of the first random access sequence received by the network device to determine the path loss value on the first beam transmitting the first random access sequence, enabling the terminal device to set the appropriate uplink signal transmission power according to the path loss value on the corresponding path, thereby reducing unnecessary energy consumption.

In a second aspect, a communication method is provided. The method can be executed by a second network device, or can also be executed by a component of the second network device (such as a chip or circuit). There is no limitation on this. For ease of description, the following is explained by taking the execution by the second network device as an example.

The method may include: a second network device receives M first random access sequences from a terminal device; the second network device sends a first message to the first network device, the first message is used to determine the first information and the second information, the first information includes the identification information of N first random access sequences among the M first random access sequences, the identification information is associated with the beam of the corresponding first random access sequence transmitted, the second information includes the signal strength of the N first random access sequences received by the second network device, N is a positive integer, and the second information is used to determine the first information and the second information. The transmission power of the second random access sequence is determined by the path loss value on the first beam, the first beam is a beam for transmitting the second random access sequence, and the second random access sequence is one of N random access sequences; the second network device receives an uplink signal from the terminal device on the second beam, the second beam is associated with the first beam, and the transmission power of the uplink signal is the first power, which is determined based on the path loss value.

In the above technical solution, the second network device sends the signal strength of the received first random access sequence to the terminal device, so that the terminal device can refer to the transmission power of the first random access sequence and the signal strength of the first random access sequence received by the network device to determine the path loss value on the first beam transmitting the first random access sequence, enabling the terminal device to set the appropriate uplink signal transmission power according to the path loss value on the corresponding path, thereby reducing unnecessary energy consumption.

On the third aspect, a communication method is provided. The method can be executed by a first network device, or can also be executed by a component of the first network device (such as a chip or circuit). There is no limitation on this. For the sake of ease of description, the method is explained below by taking the execution by the first network device as an example.

The method includes: a first network device receives a first message from a second network device, the first message is used to determine first information and second information, the first information includes identification information of N first random access sequences, the N first random access sequences are included in M first random access sequences, the M first random access sequences are sequences sent by the terminal device to the second network device, the identification information is associated with the beam for transmitting the corresponding first random access sequence, the second information includes signal strengths of the N first random access sequences received by the second network device, N is a positive integer, the second information is used to determine a path loss value on the first beam with the transmission power of the second random access sequence, the first path loss value is used to determine a first power, the first power is the power of sending an uplink signal on the second beam, the second beam is associated with the first beam, the first beam is a beam for transmitting the second random access sequence, and the second random access sequence is one of the N random access sequences; the first network device sends the first information and the second information to the terminal device.

For the beneficial effects of the third aspect, please refer to the description of the first and second aspects, which will not be repeated here.

In certain implementations of the second and third aspects, the first message includes the first information and the second information, or the first message includes identification information of M first random access sequences and signal strengths of the M first random access sequences received by the second network device.

In certain implementations of the first to third aspects, when the width of the second beam is smaller than the width of the first beam, the first power P satisfies the following formula:
P＝min{P _max ,P _O +10log(2 ^μ *M)+α*PL-Gnb}

Among them, Po is the target receiving power of the preconfigured uplink signal, M is the transmission bandwidth of the preconfigured uplink signal, α is the predefined compensation factor, PL is the path loss value, Pmax is the predefined maximum transmission power of the uplink signal, μ is the parameter corresponding to the subcarrier spacing, and Gnb is the beam gain factor, which is related to the width of the second beam and the width of the first beam.

For example, when μ=0, the subcarrier spacing is 15 kHz, when μ=1, the subcarrier spacing is 30 kHz, and when μ=2, the subcarrier spacing is 60 kHz.

The above technical solution provides a method for setting the corresponding transmission power of the uplink signal sent in the direction of the first beam when the second beam for transmitting the uplink signal is a narrow beam.

In certain implementations of the first aspect to the third aspect, when the width of the second beam is equal to the first beam width, the first power P satisfies the following formula:
P＝min{P _max ,P _O +10log(2 ^μ *M)+α*PL}

Among them, Po is the target receiving power of the preconfigured uplink signal, M is the transmission bandwidth of the preconfigured uplink signal, α is the predefined compensation factor, PL is the path loss value on the first beam, Pmax is the predefined maximum transmission power of the uplink signal, and μ is the parameter corresponding to the subcarrier spacing.

The above technical solution provides a method for setting the corresponding transmission power of the uplink signal sent in the direction of the first beam when the second beam for transmitting the uplink signal is a wide beam.

In a fourth aspect, a communication method is provided. The method can be executed by a terminal device, or can also be executed by a component of the terminal device (such as a chip or circuit). There is no limitation on this. For ease of description, the following is explained using the execution by a terminal device as an example.

The method may include: a terminal device sends M first random access sequences to a second network device; the terminal device receives first indication information from the first network device or the second network device, the first indication information including identification information of N first random access sequences among the M first random access sequences, the identification information being associated with a beam of the corresponding first random access sequence transmitted, N being a positive integer, wherein the first indication information is information scheduled by a first DCI, the CRC of the first DCI is scrambled by the C-RNTI of the terminal device, or the first indication information is information scrambled by the C-RNTI of the terminal device.

In the above technical solution, the network side device sends the first indication information to the terminal device, which can accelerate the terminal device to obtain the reference direction of the uplink signal sent by the terminal device to the second network device, thereby reducing unnecessary delay. Specifically, when the first indication information is When a RAR message is sent, the terminal device needs to wait for the start of the random access response window and perform descrambling according to the RA-RNTI in the random access response window, which increases the detection complexity and causes the reception delay to increase. Through the first indication information carrier, the identification information of the random access sequence can be indicated in any downlink data sent to the terminal device, thereby reducing unnecessary delays and complexity.

In certain implementations of the fourth aspect, the first indication information also includes indication information of the signal strength of N first random access sequences received by the second network device, and the method also includes: the terminal device determines the path loss value on the first beam based on the transmission power of the second random access sequence and the signal strength of the second random access sequence received by the second network device, the first beam is a beam for transmitting the second random access sequence, and the second random access sequence is one of the N random access sequences; the terminal device sends an uplink signal to the second network device in the direction corresponding to the first beam according to the first power, and the first power is determined based on the path loss value.

In certain implementations of the fourth aspect, when the width of the second beam is smaller than the width of the first beam, the first power P satisfies the following formula:
P＝min{P _max ,P _O +10log(2 ^μ *M)+α*PL-Gnb}

In certain implementations of the fourth aspect, when the width of the second beam is equal to the first beam width, the first power P satisfies the following formula:
P＝min{P _max ,P _O +10log(2 ^μ *M)+α*PL}

In a fifth aspect, a communication method is provided. The method can be executed by a terminal device, or can also be executed by a component of the terminal device (such as a chip or circuit). There is no limitation on this. For the sake of ease of description, the following is explained using the execution by a terminal device as an example.

The method may include: a terminal device sends M first random access sequences to a second network device; the terminal device receives first information from the first network device or the second network device, the first information includes identification information of N first random access sequences among the M first random access sequences, the identification information is associated with a beam for transmitting the corresponding first random access sequence, and N is a positive integer; the terminal device receives third information from the first network device, the third information indicates sending L uplink signals; when the product of L and the width of the second beam is less than the product of N and the width of the first beam, the second beam is a beam for transmitting an uplink signal, and the first beam is a beam for transmitting the first random access sequence, the terminal device sends an uplink signal to the second network device on at least one second beam, and the at least one second beam is associated with P first beams, wherein the P first beams are partial beams among the N first beams for transmitting the N first random access sequences, and P is a positive integer.

In the above technical solution, when the beam width corresponding to the L second beams cannot completely cover the direction of the N first beams, the terminal device can transmit L uplink signals with Q1 second beams only in the direction of part of the N first beams, where Q1 is less than or equal to L, thereby realizing uplink beam scanning.

For example, the beam width of the transmission beam #1 and beam #2 (i.e., the width of the first beam) is 45°, and the width of the second beam is 15°. Then, the direction of beam #1 or beam #2 (i.e., one first beam) requires 3 second beams to be fully scanned. Then, for beam #1 and beam #2, i.e., the direction of the two first beams, at least 6 second beams are required to ensure a round of scanning. Then, if L is less than 6, for example, L is equal to 4, it is impossible to scan on beam #1 and beam #2 at the same time, then the terminal device can choose to perform beam scanning only in the direction of one of beams #1 and beam #2.

In some implementations of the fifth aspect, the product of L and the width of the second beam is greater than or equal to the product of P and the width of the first beam. That is, the beam widths corresponding to the L second beams can completely cover the directions of the P first beams.

In certain implementations of the fifth aspect, the method also includes: when the product of L and the width of the second beam is greater than or equal to the product of N and the width of the first beam, the terminal device sends L uplink signals to the second network device on at least one second beam, and at least one second beam is associated with N first beams.

In the above technical solution, when the beam width corresponding to the L second beams can completely cover the direction of the N first beams, the terminal device can transmit uplink signals with Q2 second beams in the direction of the N first beams, where Q2 is less than or equal to L.

In certain implementations of the fifth aspect, the method also includes: the terminal device receives second information from the first network device or the second network device, the second information includes the signal strength of N first random access sequences received by the second network device, and the signal strength of the P first random access sequences transmitted by P beams is greater than or equal to the signal strength of the sequences among the N first random access sequences except the P first random access sequences.

In a sixth aspect, a communication method is provided. The method can be executed by a second network device, or can also be executed by a component of the second network device (such as a chip or circuit). There is no limitation on this. For ease of description, the following is explained using the execution by the second network device as an example.

The method may include: a second network device receives M first random access sequences sent from a terminal device; the second network device sends a first message to the first network device, the first message is used to determine the first information, the first information includes identification information of N first random access sequences among the M first random access sequences, the identification information is associated with the beam that transmits the corresponding first random access sequence, and N is a positive integer; the second network device receives an uplink signal sent from the terminal device on at least one second beam, and the at least one second beam is associated with P first beams, wherein the product of L and the width of the second beam is less than the product of N and the width of the first beam, the second beam is a beam that transmits an uplink signal, the first beam is a beam that transmits the first random access sequence, L is the number of uplink signals sent indicated by the first network device, the P first beams are part of the N first beams that transmit the N first random access sequences, and P is a positive integer.

For the beneficial effects of the sixth aspect, please refer to the description in the fifth aspect and will not be repeated here.

In certain implementations of the sixth aspect, the product of L and the width of the second beam is greater than or equal to the product of P and the width of the first beam.

In certain implementations of the sixth aspect, the method also includes: the second network device receives L uplink signals from the terminal device on at least one second beam, and the at least one second beam is associated with N first beams, wherein the product of L and the width of the second beam is greater than or equal to the product of N and the width of the first beam.

In certain implementations of the sixth aspect, the method also includes: a second network device sends second information to a terminal device, the second information including signal strengths of N first random access sequences received by the second network device, and the signal strengths of the P first random access sequences transmitted by P beams are greater than or equal to the signal strengths of sequences among the N first random access sequences except the P first random access sequences.

In the seventh aspect, a communication method is provided. The method can be executed by a terminal device, or can also be executed by a component of the terminal device (such as a chip or circuit). There is no limitation on this. For the sake of ease of description, the following is explained using the execution by the terminal device as an example.

The method may include: the terminal device determines a second power, the second power is one of multiple predefined powers for sending uplink signals, the second power is determined based on a reference power, and the reference power is based on the power of a physical uplink shared channel PUSCH sent by the terminal device before sending the first uplink signal or a reference signal for measurement; the terminal device sends a first uplink signal to the second network device according to the second power.

In the above technical solution, the terminal device is enabled to set an appropriate uplink signal transmission power. At the same time, the second power is determined based on the power of the PUSCH or reference signal before the uplink signal is sent, which can ensure that the power value of the uplink signal is both interference and power consumption. For example, the second power is determined based on the power value of the most recently sent PUSCH as the reference power, which can ensure that the signal detection performance is close to the PUSCH demodulation performance.

In certain implementations of the seventh aspect, the method also includes: the terminal device sends M first random access sequences to the second network device; the terminal device receives first information from the first network device or the second network device, the first information includes identification information of N first random access sequences among the M first random access sequences, the identification information is associated with the beam for transmitting the corresponding first random access sequence, and N is a positive integer; then, the terminal device sends a first uplink signal to the second network device according to the second power, including: the terminal device sends the first uplink signal to the second network device on the second beam according to the second power, the second beam is associated with the first beam, the first beam is a beam for transmitting the second random access sequence, and the second random access sequence is one of the N random access sequences.

In the above technical solution, in a scenario where there is only uplink or uplink is dominant, the terminal device is enabled to set the appropriate uplink signal transmission power in the corresponding beam direction (or on the corresponding path).

In certain implementations of the seventh aspect, the method also includes: the terminal device obtains a path loss value on the first beam, and the path loss value is determined based on the second power and the signal strength of the first uplink signal received by the second network device; the terminal device determines the power of the physical uplink shared channel PUSCH or the reference signal used for measurement that the terminal device needs to send after sending the first uplink signal based on the path loss value.

In the above technical solution, the terminal device further updates the value of the reference power used based on the path loss value of the first beam, and then continues to determine the second power of the uplink signal sent based on the reference power, which can make the selection of the second power more accurate.

In certain implementations of the seventh aspect, the terminal device obtains the path loss value on the first beam, including: the terminal device receives fourth information from the first network device or the second network device, and the fourth information includes signal strength; the terminal device determines the path loss value on the first beam based on the second power and signal strength.

In certain implementations of the seventh aspect, the terminal device obtains the path loss value on the first beam, including: the terminal device receives fifth information from the first network device or the second network device, and the fifth information includes the path loss value on the first beam.

In certain implementations of the seventh aspect, the PUSCH sent by the terminal device before sending the first uplink signal is the PUSCH sent last time, or the PUSCH sent most recently X times, or the PUSCH within a time period, and the reference signal for measurement sent by the terminal device before sending the first uplink signal is the reference signal sent last time, or the reference signal sent most recently X times, or the reference signal within a time period, where X is a positive integer greater than 1.

In certain implementations of the seventh aspect, the second power is the minimum power among all powers among the multiple powers that are greater than or equal to the reference power, or, the second power is the maximum power among all powers among the multiple powers that are less than or equal to the reference power, or, the second power is the power among the multiple powers that has the smallest deviation from the reference power.

In certain implementations of the seventh aspect, the second power is the minimum power among the multiple powers, or the second power is the maximum power among the multiple powers.

In certain implementations of the seventh aspect, the terminal device determines the second power, including: the terminal device receives sixth information from the first network device or the second network device, and the sixth information includes the second power.

In an eighth aspect, a communication method is provided. The method can be executed by a second network device, or can also be executed by a component of the second network device (such as a chip or circuit). There is no limitation on this. For the sake of ease of description, the following is explained using the execution by the second network device as an example.

The method may include: the second network device determines a second power, the second power is one of multiple predefined powers for sending uplink signals, the second power is determined based on a reference power, and the reference power is based on the power of a physical uplink shared channel PUSCH sent by the terminal device before sending the first uplink signal or a reference signal for measurement; the second network device sends sixth information to the first network device or the terminal device, and the sixth information includes the second power.

For the beneficial effects of the eighth aspect, please refer to the description of the seventh aspect and will not be repeated here.

In certain implementations of the eighth aspect, the method also includes: the second network device receives M first random access sequences from the terminal device; the second network device sends a first message to the first network device, the first message is used to determine the first information, the first information includes identification information of N first random access sequences among the M first random access sequences, the identification information is associated with the beam for transmitting the corresponding first random access sequence, and N is a positive integer; the second network device receives a first uplink signal from the terminal device on a second beam, the second random access sequence is one of the N random access sequences, the second beam is associated with the first beam, and the first beam is a beam for transmitting the second random access sequence, wherein the transmission power of the first uplink signal is the second power.

In certain implementations of the eighth aspect, the method also includes: the second network device determines the signal strength of the received first uplink signal, the signal strength and the second power are used to determine the path loss value on the first beam, and the path loss value is used to determine the power of the physical uplink shared channel PUSCH that the terminal device needs to send after sending the first uplink signal or the reference signal for measurement.

In certain implementations of the eighth aspect, the method further includes: the second network device sends fourth information to the terminal device or the first network device, and the fourth information includes signal strength.

In certain implementations of the eighth aspect, the method also includes: the second network device determines a path loss value on the first beam; the second network device sends fifth information to the first network device or the terminal device, and the fifth information includes the path loss value on the first beam.

In the ninth aspect, a communication method is provided. The method can be executed by a terminal device, or can also be executed by a component of the terminal device (such as a chip or circuit). There is no limitation on this. For the sake of ease of description, the following is explained using the execution by a terminal device as an example.

The method may include: a terminal device sends multiple random access sequences to a network device; the terminal device receives response information from the network device, the response information includes feedback information of at least one random access sequence among the multiple random access sequences, the response information is scrambled based on a random access radio network temporary identifier RA-RNTI, RA-RNTI is an RNTI generated based on time-frequency resource information of a first random access sequence, the first random access sequence is a sequence determined among multiple random access sequences based on a first rule, or the first random access sequence is a sequence indicated by the network device to the terminal device; the terminal device descrambles the response message based on the RA-RNTI.

In the above technical scheme, by using the first rule as a limitation or the network device to indicate the first random access sequence, it can be ensured that when the response message contains feedback information of multiple random access sequences, the terminal device does not need to derive the RA-RNTI of multiple random access sequences sent by different time-frequency resources respectively, and does not need to detect the RAR of multiple random access sequences sent by different time-frequency resources respectively. The terminal device can quickly descramble the response message to obtain the corresponding information, reducing the detection complexity and unnecessary descrambling overhead.

In certain implementations of the ninth aspect, the first random access sequence is a random access sequence among multiple random access sequences, or is a random access sequence different from the multiple random access sequences.

In certain implementations of the ninth aspect, the feedback information includes identification information of at least one random access sequence, and the identification information is transmitted The method further includes: the terminal device sends an uplink signal to the network device on a second beam, the second beam is associated with the first beam, the first beam is a beam for transmitting a second random access sequence, and the second random access sequence is one of the at least one random access sequence.

In the tenth aspect, a communication method is provided. The method can be executed by a network device, or can also be executed by a component of the network device (such as a chip or circuit). There is no limitation on this. For the sake of ease of description, the following is explained using the example of execution by a network device.

The method may include: a network device receives multiple random access sequences from a terminal device; the network device generates a response message, the response information includes feedback information of at least one random access sequence among the multiple random access sequences, the response information is encrypted based on a random access radio network temporary identifier RA-RNTI, the RA-RNTI is an RNTI generated based on time-frequency resource information of a first random access sequence, the first random access sequence is a sequence determined among multiple random access sequences based on a first rule, or the first random access sequence is a sequence indicated by the network device to the terminal device; the network device sends a response message to the terminal device.

For the beneficial effects of the tenth aspect, please refer to the description of the ninth aspect and will not be repeated here.

In certain implementations of the tenth aspect, the feedback information includes identification information of at least one random access sequence, and the identification information is associated with a beam corresponding to the transmission of at least one random access sequence. The method also includes: the network device receives an uplink signal from the terminal device on a second beam, the second beam is associated with the first beam, the first beam is a beam for transmitting a second random access sequence, and the second random access sequence is one of the at least one random access sequence.

In certain implementations of the ninth and tenth aspects, the first rule indicates that the first random access sequence is the first random access sequence transmitted among multiple random access sequences, or the first rule indicates that the first random access sequence is the last random access sequence transmitted among multiple random access sequences.

In certain implementations of the ninth and tenth aspects, the response information is encrypted based on the RA-RNTI, including: the cyclic redundancy check CRC of the control information of the scheduling response information is encrypted based on the RA-RNTI, or the response information is encrypted based on the RA-RNTI.

In an eleventh aspect, a communication device is provided, the device being used to execute the methods provided in the first aspect, the fourth aspect, the fifth aspect, the seventh aspect, and the ninth aspect. Specifically, the device may include a unit and/or module, such as a processing unit and/or a communication unit, for executing the method in the first aspect, the fourth aspect, the fifth aspect, the seventh aspect, the ninth aspect, and any possible implementation of the first aspect, the fourth aspect, the fifth aspect, the seventh aspect, and the ninth aspect.

In one implementation, the apparatus is a terminal device. When the apparatus is a terminal device, the communication unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor. Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In another implementation, the device is a chip, a chip system or a circuit used in a terminal device. When the device is a chip, a chip system or a circuit used in a terminal device, the communication unit may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip, the chip system or the circuit; the processing unit may be at least one processor, a processing circuit or a logic circuit.

In the twelfth aspect, a communication device is provided, which is used to execute the method provided in the second aspect, the sixth aspect, and the eighth aspect. Specifically, the device may include a unit and/or module, such as a processing unit and/or a communication unit, for executing the method in the second aspect, the sixth aspect, the eighth aspect, and any possible implementation of the second aspect, the sixth aspect, and the eighth aspect.

In one implementation, the device is a second network device. When the device is a second network device, the communication unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor. Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In another implementation, the device is a chip, a chip system or a circuit used in the second network device. When the device is a chip, a chip system or a circuit used in a terminal device, the communication unit may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip, the chip system or the circuit; the processing unit may be at least one processor, a processing circuit or a logic circuit.

In a thirteenth aspect, a communication device is provided, which is used to execute the method provided in the third aspect. Specifically, the device may include a unit and/or module, such as a processing unit and/or a communication unit, for executing the method in the third aspect and any possible implementation of the third aspect.

In one implementation, the device is a first network device. When the device is a first network device, the communication unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor. Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In another implementation, the device is a chip, a chip system or a circuit used in the first network device. When the chip, chip system or circuit is in the terminal device, the communication unit can be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, chip system or circuit; the processing unit can be at least one processor, processing circuit or logic circuit.

In a fourteenth aspect, a communication device is provided, which is used to execute the method provided in the tenth aspect. Specifically, the device may include a unit and/or module, such as a processing unit and/or a communication unit, for executing the method in the tenth aspect and any possible implementation of the tenth aspect.

In one implementation, the device is a network device. When the device is a network device, the communication unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor. Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In another implementation, the device is a chip, chip system or circuit used in a network device. When the device is a chip, chip system or circuit used in a terminal device, the communication unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, chip system or circuit; the processing unit may be at least one processor, processing circuit or logic circuit.

In a fifteenth aspect, a communication device is provided, comprising: at least one processor, the at least one processor being coupled to at least one memory, the at least one memory being used to store computer programs or instructions, and the at least one processor being used to call and run the computer program or instructions from the at least one memory, so that the communication device executes the method in the first aspect, the fourth aspect, the fifth aspect, the seventh aspect, the ninth aspect, and any possible implementation manner of the first aspect, the fourth aspect, the fifth aspect, the seventh aspect, and the ninth aspect.

In one implementation, the apparatus is a terminal device.

In another implementation, the apparatus is a chip, a chip system or a circuit used in a terminal device.

In the sixteenth aspect, a communication device is provided, comprising: at least one processor, the at least one processor is coupled to at least one memory, the at least one memory is used to store computer programs or instructions, and the at least one processor is used to call and run the computer program or instructions from the at least one memory, so that the communication device executes the method in the second aspect, the sixth aspect, the eighth aspect, and any possible implementation of the second aspect, the sixth aspect, and the eighth aspect.

In one implementation, the apparatus is a second network device.

In another implementation, the apparatus is a chip, a chip system or a circuit used in a second network device.

In the seventeenth aspect, a communication device is provided, comprising: at least one processor, the at least one processor is coupled to at least one memory, the at least one memory is used to store computer programs or instructions, and the at least one processor is used to call and run the computer program or instructions from the at least one memory, so that the communication device executes the method in the third aspect and any possible implementation manner of the third aspect.

In one implementation, the apparatus is a first network device.

In another implementation, the apparatus is a chip, a chip system or a circuit used in the first network device.

In the eighteenth aspect, a communication device is provided, comprising: at least one processor, the at least one processor is coupled to at least one memory, the at least one memory is used to store computer programs or instructions, and the at least one processor is used to call and run the computer program or instructions from the at least one memory, so that the communication device executes the method in the tenth aspect and any possible implementation of the tenth aspect.

In one implementation, the apparatus is a network device.

In another implementation, the apparatus is a chip, a chip system, or a circuit used in a network device.

In the nineteenth aspect, a processor is provided for executing the methods provided in the above aspects.

For the operations such as sending and acquiring/receiving involved in the processor, unless otherwise specified, or unless they conflict with their actual function or internal logic in the relevant description, they can be understood as operations such as processor output, reception, input, etc., or as sending and receiving operations performed by the radio frequency circuit and antenna, and this application does not limit this.

In the twentieth aspect, a computer-readable storage medium is provided, which stores a program code for execution by a device, and the program code includes a method for executing the above-mentioned first to tenth aspects and any possible implementation method of the first to tenth aspects.

In the twenty-first aspect, a computer program product comprising instructions is provided. When the computer program product is run on a computer, the computer executes the method in the above-mentioned first to tenth aspects and any possible implementation manner of the first to tenth aspects.

In the twenty-second aspect, a chip is provided, the chip including a processor and a communication interface, the processor reads instructions stored in a memory through the communication interface, and executes the method in the above-mentioned first to tenth aspects and any possible implementation method of the first to tenth aspects.

Optionally, as an implementation method, the chip also includes a memory, in which a computer program or instructions are stored, and the processor is used to execute the computer program or instructions stored in the memory. When the computer program or instructions are executed, the processor is used to execute the method in the above-mentioned first to tenth aspects and any possible implementation method of the first to tenth aspects.

In the twenty-third aspect, a communication system is provided, which includes the communication device shown in the fifteenth aspect, the sixteenth aspect and the seventeenth aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a network architecture applicable to an embodiment of the present application.

FIG2 is a flow chart of a method for implementing beam alignment relying on uplink after introducing a new random access mechanism.

FIG3 is a schematic block diagram of a communication method provided in an embodiment of the present application.

FIG4 is a schematic block diagram of first information and second information provided by an embodiment of the present application being sent by a first network device to a terminal device.

FIG5 is a schematic block diagram of another communication method provided in an embodiment of the present application.

FIG. 6 is a schematic diagram of random access sequence detection.

FIG. 7 is a schematic diagram of uplink signal transmission within the angles of beam #1 and beam #2.

FIG8 is a schematic block diagram of another communication method provided in an embodiment of the present application.

FIG. 9 is a schematic block diagram of another communication method provided in an embodiment of the present application.

FIG. 10 is a schematic block diagram of a communication device 200 provided in the present application.

FIG11 is a schematic structural diagram of a communication device 300 provided in the present application.

DETAILED DESCRIPTION

The technical solution in this application will be described below in conjunction with the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems. For example: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, fifth generation (5G) system or new radio (NR), or next generation communication system, such as 6G, etc. The 5G mobile communication system involved in the embodiments of the present application includes a non-standalone (NSA) 5G mobile communication system or a standalone (SA) 5G mobile communication system. The technical solutions provided in the present application can also be applied to future communication systems, such as the sixth generation mobile communication system. The communication system may also be a public land mobile network (PLMN) network, a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT), an Internet of Vehicles communication system or other communication systems.

Fig. 1 is a schematic diagram of a network architecture applicable to an embodiment of the present application. The network architecture includes a terminal device 100, at least one network device 200 and a network device 300. The terminal device 100 can be located within the coverage of the network device 200 and the network device 300 at the same time.

The terminal device 100 may refer to an access terminal, a user unit, a user station, a mobile station, a mobile station, a relay station, a remote station, a remote terminal, a mobile device, a user terminal (user terminal), a user equipment (user equipment, UE), a terminal (terminal), a wireless communication device, a user agent, a user device, a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a 5G network or a terminal in a future evolved PLMN or a terminal in a future Internet of Vehicles, etc., and the embodiments of the present application are not limited to this.

The network device 200/network device 300 can be any communication device with wireless transceiver function for communicating with the terminal device 100. The network device 200/network device 300 includes but is not limited to: evolved node B (eNB), baseband unit (BBU), access point (AP) in wireless fidelity (WIFI) system, wireless relay node, wireless backhaul node, transmission point (TP) or transmission reception point (TRP), etc. The network device 200/network device 300 can also be a gNB or TRP or TP in a 5G system, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system. In addition, the network device 200/network device 300 can also be a network node constituting a gNB or TP, such as a BBU, or a distributed unit (DU), etc. The network device 200/network device 300 can also be a network device in a 5G or 6G system. The embodiment of the present application does not limit the specific implementation form of the network device 200/network device 300.

The network device 200 and the network device 300 may be at different sites. Different sites can also be understood as non-co-sites, that is, the network device 200 and the network device 300 are not located at the same site (co-site). Among them, the network device 200 can use a higher frequency band (such as 28GHz, 38GHz, or 60GHz frequency band, etc.) as a supplementary uplink (supplementary UL, SUL). At least one network device 200 can form an uplink ultra-dense networking. The higher frequency band here can refer to any frequency band higher than 6GHz. The arbitrary frequency band may include a millimeter wave frequency band. In other words, the network device 200 can introduce a millimeter wave frequency band as a supplementary uplink. Among them, the higher frequency band may include at least one carrier, which may be an uplink only (UL only) carrier or an uplink dominant (UL dominant) carrier. Thus, through these uplink carriers, the terminal device 100 can send an uplink signal to the network device 200.

When the network device 200 is in the uplink-dominated situation, the network device 200 can be an offline (standalone) network device. That is, it is not limited to the situation of coexisting with the network device 300 and at a different site. The network device 300 can use a lower frequency band, such as a 700MHz frequency band, an 800MHz frequency band, a 1.6GHz frequency band, a 1.9GHz frequency band, a 2.1GHz frequency band or a 2.5GHz frequency band. The lower frequency band here can refer to any frequency band below 6GHz. The lower frequency band may include at least one downlink carrier. Thus, through these downlink carriers, the network device 300 can send downlink information or signals to the terminal device 100. The lower frequency band may also include at least one uplink carrier, so that the terminal device 100 can send uplink information or signals to the network device 300 through these uplink carriers.

Generally, when high-frequency wireless signals are used for communication between network devices and terminal devices, high-frequency wireless signals are prone to attenuation during spatial propagation, which makes it difficult for the receiving end to receive high-quality wireless signals, or even fail to detect wireless signals. To address the above problems, beamforming (BF) technology can be used to transmit a beam with good directivity in a specific transmission direction to improve the signal quality of the wireless signal when it reaches the receiving end, thereby improving the communication quality between the transmitting end and the receiving end. Generally, when high-frequency wireless signals are used for communication between network devices and terminal devices, the network devices and terminal devices use narrower beams for communication. Therefore, when the direction of the transmitting beam is aligned with the direction of the receiving beam, better communication quality is obtained between the network device and the terminal device. In this way, it is necessary to manage the beam between the network device and the terminal device to achieve the alignment of the direction of the transmitting beam and the direction of the receiving beam. There are two solutions for beam management.

Solution 1: The network device can send beams in different directions. The terminal device can measure the signal on the beam, determine the signal quality of the detected beam, and report the measurement results to the network device, so that the network device can select the direction of sending the beam according to the measurement results to achieve beam correspondence (BC).

In solution 2, the terminal device can send beams in different directions. The network device can measure the signal on the beam, determine the signal quality of the detected beam, and instruct the terminal device to adjust the direction of the transmitted beam based on the measurement result to achieve beam alignment.

As shown in Figure 1, considering the introduction of higher frequency bands for expanding uplink capacity, in the uplink-dominated scenario, due to the lack of downlink time slots, if the above solution 1 is adopted and beam alignment is achieved by relying on downlink, the delay required for beam alignment will become longer, making it more difficult to meet actual needs. Similarly, in the uplink-only scenario, no downlink time slots are configured. In this scenario, if the above solution 1 is adopted, relying on downlink to achieve beam alignment is completely infeasible.

In uplink-dominated scenarios and uplink-only scenarios, solution 2 can be used to perform beam alignment based on uplink beams. In solution 2, if there is no directional reference, the terminal device needs to send beams in more directions, which will result in a large amount of scanning overhead, increase the power consumption of the terminal device, and may take a long time to achieve beam alignment. Specifically, when the micro base station (i.e., an example of network device 200) and the macro base station (i.e., an example of network device 300) are at different sites, the terminal device needs to obtain the timing advance (TA) under the corresponding path through uplink random access (RA). After the terminal device obtains the TA, it sends an uplink signal according to the TA to achieve uplink beam alignment. Usually, when there is a downlink, random access is initiated and performed based on the uplink beam associated with the synchronization signal block (SS blocks, SSB) detected in the downlink. In other words, when there is a downlink, random access is performed based on the uplink transmission opportunity (occasion) associated with the synchronization signal block detected in the downlink. That is, random access is transmitted in the beam direction of the synchronization signal block detected in the downlink according to the associated uplink transmission opportunity, so that after detection, the network device can know the beam direction that the terminal device can align for reception based on the correspondence between the synchronization signal block and the associated uplink transmission opportunity. The uplink transmission opportunity further corresponds to the beam of the network device. However, when the downlink is small, it is impossible to rely on SSB detection in time for random access. Especially when there is no downlink, the random access of the terminal device has no reference beam and can only poll the transmission beam from any selected direction, which may lead to a large amount of scanning overhead, increase device power consumption, and take a long time to achieve beam alignment.

At present, a possible solution is provided for the above-mentioned problem. This solution introduces a new random access mechanism, which can add indication information of the uplink signal direction for subsequent beam refinement in the random access response (RAR). The indication information of the uplink signal direction for subsequent beam refinement is indicated by the relevant information of the successfully detected preamble. The relevant information of the successfully detected preamble is used to identify the direction of the successfully detected preamble (that is, the direction of the beam sending the preamble). When the terminal device learns the direction of the successfully detected preamble, it can send the uplink signal in this direction in a targeted manner, thereby reducing the terminal device's The scanning overhead of the terminal device is reduced to achieve beam alignment as soon as possible. The following is an example of introducing the scheme with the uplink signal being a sounding reference signal (SRS) in conjunction with FIG. 2. Based on the network architecture shown in FIG. 1, the network device 200 in the scheme may be a TRP, and the network device 300 may be a base station. The terminal device 100 may be referred to as a terminal device for short.

Assuming that the existing random access (RA) is called type I RA, the new RA introduced in this scheme defines type II RA. First, a type II preamble is defined. The preamble is a grouped sequence and/or resource dedicated to a type II random access channel (RACH). The type II preamble can be sent through a wider beam. Secondly, a type II random access response (RAR) is defined. The RAR contains information about a timing advance (TA) and a preamble that is successfully detected corresponding to the TA. The information includes at least one indication of the configuration information, sequence information, resource information, and occasion information of the preamble. The information of the preamble is related to the direction, indicating the direction of the uplink beam scanning used for beam refinement. In addition, the RAR may not contain an uplink grant (UL grant). Among them, the preamble can also be called a random access sequence.

FIG2 is a flow chart of a method for implementing beam alignment by relying on uplink after introducing a new random access mechanism. In the following process, the base station operates in a lower frequency band, and the TRP operates in a higher frequency band, and the higher frequency band has only uplink resources or fewer downlink resources. The higher frequency band may refer to any frequency band higher than 6 GHz, and the lower frequency band may refer to any frequency band lower than 6 GHz.

S201, when TRP operates in a higher frequency band, the lower frequency band is activated to assist the higher frequency band transmission, the base station sends the configuration information of the type II preamble code to the terminal device, and triggers the type II random access.

S202, the terminal device sends a type II preamble to the TRP. During or after the execution of step 202, the terminal device may record the correspondence between the information of the preamble and the beam that sends the preamble.

S203, TRP detects the Type II preamble and determines the Type II RAR.

S204, TRP can feedback the type II RAR to the base station.

S205, the base station can send the Type II RAR to the terminal device at a lower frequency band.

In addition, when there are downlink resources between the TRP and the terminal device, the TRP can send the Type II RAR to the terminal device in a higher frequency band through step 204a.

Optionally, S203 to S205 may be replaced by the following steps: the TRP detects the Type II preamble code and feeds it back to the base station, the base station determines the Type II RAR, and sends the Type II RAR to the terminal device at a lower frequency band.

S206, the terminal device receives the Type II RAR, determines the direction of sending the preamble code according to the correspondence between the preamble code information contained in the Type II RAR and the recorded preamble code information and the beam for sending the preamble code, and determines the direction of the uplink beam alignment to be performed according to the preamble code direction.

S207, the terminal device sends SRS to the TRP according to the direction determined in S206.

S208, TRP completes beam alignment.

S209, the TRP feeds back to the base station the corresponding beam that can schedule uplink transmission. For example, the TRP can use the information of the preamble code detected in S203 to indicate the beam.

S210, the base station schedules the terminal device to perform uplink transmission on the corresponding beam.

S211, the terminal device receives scheduling information in a lower frequency band, and performs uplink transmission in a beam alignment direction in a higher frequency band according to the scheduling information.

In the above scheme, the terminal device can send uplink signals in a specific direction to reduce blind transmission of uplink signals; TRP starts receiving measurement signals on the beam in the corresponding direction according to detection needs, reduces base station blind detection, ensures reliable reception of each uplink measurement signal, and reduces measurement energy consumption. However, it is not clear how to set the transmission power of the uplink signal when the terminal device performs uplink signal beam scanning.

In view of this, the present application proposes a communication method, which can effectively solve the above technical problems. The method proposed in the present application is described in detail below.

As shown in Figure 3, Figure 3 is a schematic block diagram of a communication method provided in an embodiment of the present application. As an example, based on the network architecture shown in Figure 1, the second network device in the solution can be regarded as network device 200, the first network device can be regarded as network device 300, and the random access sequence can be regarded as a random access preamble.

S310: The terminal device sends M first random access sequences to the second network device. Correspondingly, the second network device receives the M first random access sequences from the second network device.

It should be understood that since there is no reference beam for random access of the terminal device, it can only start polling from any selected direction to send M beams to transmit M first random access sequences. As an example, the M beams correspond to the M first random access sequences one by one, that is, one beam is used to transmit one random access sequence. As another example, less than M beams correspond to the M first random access sequences, that is, one beam For ease of understanding, the following description is based on a one-to-one correspondence between the M first random access sequences and the M beams.

In some embodiments, the first random access sequence may be a preset type of random access preamble (RAP) (i.e., type II preamble). The preset type of RAP is a grouped sequence and/or resource that may be dedicated to a preset type of random access (i.e., type II RA).

In some embodiments, the terminal device may send the first random access sequence to the second network device according to a preset power. Exemplarily, when a millimeter wave frequency band is introduced as a supplementary uplink, the preset power may be a power upper limit value that can meet millimeter wave coverage.

In some embodiments, before executing S310, the first network device may send configuration information of the first random access sequence to the terminal device. Exemplarily, the network device 300 may send the configuration information of the first random access sequence to the terminal device via a carrier of a lower frequency band. The configuration information of the first random access sequence is information of sending the first random access sequence to the second network device.

S320, the network side device (the first network device or the second network device) sends the first information and the second information to the terminal device. Correspondingly, the terminal device receives the first information and the second information from the network side device.

The first information includes identification information of N first random access sequences among the M first random access sequences, and the identification information is associated with the beam transmitting the corresponding first random access sequence. The second information includes signal strengths of the N first random access sequences received by the second network device, where N is a positive integer.

Among them, the identification information is associated with the beam of the first random access sequence corresponding to the transmission, and it can also be understood that the identification information corresponds to the beam of the first random access sequence corresponding to the transmission, or the identification information can be used to determine the beam of the first random sequence corresponding to the transmission, or the identification information can be used to determine the direction of the beam of the first random sequence corresponding to the transmission.

It should be understood that the identification information of the random access sequence is used to identify the direction of the detected random access sequence, that is, the direction of the beam sending the random access sequence. The identification information can also be used by the terminal device to determine the beam for sending an uplink signal to the second network device. In the present application, determining the beam for sending an uplink signal to the second network device can be understood as determining the beam direction for sending an uplink signal to the second network device.

For example, the identification information of the random access sequence includes at least one of an index of the random access sequence, an index of a time-frequency resource of the random access sequence, an index of a random access time moment or opportunity, an index of a starting point of a time resource of the random access sequence, an index of a time resource of the random access sequence, an index of a frequency resource of the random access sequence, an index of a physical random access channel (PRACH) of the first subframe where a PRACH carrying the random access sequence is located, or a PRACH mask index.

For example, the signal strength of the random access sequence can be specifically a received signal strength indication (RSSI), or a reference signal receiving power (RSRP) or a signal to interference plus noise ratio (SINR).

Optionally, in an uplink-dominated scenario, the first information and the second information may be sent to the terminal device by the first network device or the second network device. For example, when the first information and the second information are sent to the terminal device by the second network device, the first information and the second information may be carried in a preset type of RAR.

Optionally, in an uplink-only scenario, the first information and the second information may be forwarded by the second network device to the first network device, and then sent by the first network device to the terminal device. The first network device and the second network device may exchange information via an X2 or Xn interface.

4, the first information and the second information are sent from the first network device to the terminal device as an example for explanation. The method includes the following steps.

S410, the second network device sends a first message to the first network device, where the first message is used to determine the first information and the second information. Correspondingly, the first network device receives the first message from the second network device.

Optionally, the first message includes the first information and the second information. It can be understood that the second network determines the first information and the second information, and directly carries the first information and the second information in the first message and sends it to the first network device.

Optionally, the first message includes identification information of the M first random access sequences and signal strengths of the M first random access sequences received by the second network device. It can be understood that the second network device carries the information used to determine the first information and the second information in the first message and sends it to the first network device, and the first network device determines the first information and the second information according to the first message.

A possible implementation manner in which the first network device and the second network device determine the first information and the second information will be described in detail in S420 and will not be described in detail here.

S420: The first network device determines first information and second information according to the first message.

For example, the first network device or the second network device may select N first random access sequences from M first random access sequences according to the first condition.

In some embodiments, the first network device or the second network device may determine N first random access sequences that meet the condition based on the first threshold value (i.e., an example of the first condition). The first threshold value may be a preset value. In one example, the first threshold value may be a signal strength threshold. The first threshold value is used to determine a random access sequence greater than or equal to the first threshold value from the first random access sequence. Specifically, the second network device may determine whether the signal strength of the detected M first random access sequences is greater than or equal to the first threshold value, and determine N first random access sequences that meet the condition.

S430: The first network device sends first information and second information to the terminal device.

For example, when the first information and the second information are sent from the first network device to the terminal device, the first information and the second information can be carried in the second message.

Optionally, the second message is information scheduled by the first DCI, the CRC of the first DCI is scrambled by the C-RNTI of the terminal device, or the second message is information scrambled by the C-RNTI.

For example, the second message in the optional method is a medium access control element (MAC CE). It should be understood that the MAC CE is not a preset type of RAR, and the MAC CE is a MAC CE contained in a physical downlink shared channel (PDSCH) issued after the terminal device initially accesses the first network device and enters a connected state. The MAC CE includes a TA, first information, and second information under the corresponding path. The MAC CE is included in the PDSCH, which is scheduled for transmission by a physical downlink control channel (PDCCH) wrapped by the C-RNTI of the terminal device. It can be understood that the PDCCH wrapped by the C-RNTI of the terminal device means that the CRC of the PDCCH is scrambled by the C-RNTI of the terminal device, and the PDCCH carries DCI. In this optional method, by using the second message to send the first information and the second information to the terminal device, the terminal device can accelerate the acquisition of the reference direction for sending the uplink signal to the second network device, thereby reducing unnecessary delays. Specifically, when the second message is a RAR message, the terminal device needs to wait for the start of the random access response window and perform descrambling according to the RA-RNTI in the random access response window, which increases the detection complexity and causes the reception delay to become longer. Through the second message carrier, the first information and the second information can be indicated in any downlink data sent to the terminal device, thereby reducing unnecessary delays and complexity.

Optionally, the second message is information scheduled by the second DCI, and the CRC of the second DCI is scrambled by the RA-RNTI, or the second message is information scrambled by the RA-RNTI. For example, the RA-RNTI can be an RNTI generated based on the time-frequency resource information of any sequence in the N first random access sequences, or the RA-RNTI can be an RNTI generated based on the time-frequency resource information of any sequence in the random access sequence indicated by the first network device. For other possible implementations of RA-RNTI, please refer to the description in the method shown in Figure 9, which will not be repeated here.

It can be understood that the second message in this optional method is a RAR message.

The above describes in detail the specific process of sending the first information and the second information from the first network device to the terminal device. The following describes in detail the process corresponding to FIG. 3 .

S330, the terminal device determines the path loss value on the first beam according to the transmission power of the second random access sequence and the signal strength of the second random access sequence received by the second network device, the first beam is a beam transmitting the second random access sequence, and the second random access sequence is one of N random access sequences.

In some embodiments, the path loss value on the first beam is equal to the difference between the transmit power of the second random access sequence and the signal strength of the second random access sequence received by the second network device.

S340, the terminal device sends an uplink signal to the second network device on the second beam according to the first power, the second beam is associated with the first beam, and the first power is determined based on the path loss value. Correspondingly, the second network device receives the uplink signal from the terminal device.

By way of example, the uplink signal may be SRS, a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a preamble, or any other uplink transmission signal.

It should be understood that the second beam is associated with the first beam means that an uplink signal is sent in the direction of the first beam for sending the second random access sequence, or in the direction associated with the direction of the first beam for sending the second random access sequence, and the uplink signal is transmitted through the second beam. In the present application, direction can be replaced by beam direction.

For example, the direction associated with the direction of the first beam for sending the second random access sequence refers to the direction around the direction of the first beam, or the range of directions radiated at a certain angle based on the direction of the first beam, which is not limited in the present application.

Among them, S330 and S340 can also be described as: the terminal device determines the path loss value according to the transmission power of the second random access sequence and the signal strength of the second random access sequence received by the second network device; the terminal device sends an uplink signal to the second network device on the second beam according to the first power. The second beam is associated with the beam transmitting the second random access sequence, and the second random access sequence is one of the N random access sequences. The first power is determined based on the path loss value.

Among them, the width (or angle) of a beam used to send an uplink signal (i.e., the second beam) is 360 degrees/the number of beams that can be used to send an uplink signal, and the width of a beam used to send a first random access sequence (i.e., the first beam) is 360 degrees/the number of beams that can be used to send the first random access sequence. In other words, the widths of the first beams used to send M first random access sequences are all the same, and similarly, the widths of multiple second beams used to send multiple uplink signals are all the same.

For example, if the width of the first beam is 45° and the width of the second beam is 45°, the terminal device sends an uplink signal to the second network device on the second beam according to the first power, wherein the directions of the first beam and the second beam are the same. For another example, if the width of the first beam is 45° and the width of the second beam is 15°, the terminal device sends three uplink signals to the second network device on three second beams according to the first power, wherein the directions of the three second beams overlap with the direction of the first beam.

In a possible implementation, when the width of the second beam is equal to the width of the first beam (that is, the second beam is a wide beam), the first power P satisfies the following formula:
P＝min{P _max ,P _O +10log(2 ^μ *M)+α*PL}

Among them, Po is the target receiving power of the preconfigured uplink signal, M is the transmission bandwidth of the preconfigured uplink signal, α is the predefined compensation factor, PL is the path loss value on the first beam, P _max is the predefined maximum transmission power of the uplink signal, and μ is the parameter corresponding to the subcarrier spacing. For example, when μ=0, the subcarrier spacing is 15kHz, when μ=1, the subcarrier spacing is 30kHz, and when μ=2, the subcarrier spacing is 60kHz.

In a possible implementation, when the width of the second beam is smaller than the width of the first beam (that is, the second beam is a narrow beam), the first power P satisfies the following formula:
P＝min{P _max ,P _O +10log(2 ^μ *M)+α*PL-Gnb}

Among them, Po is the target receiving power of the preconfigured uplink signal, M is the transmission bandwidth of the preconfigured uplink signal, α is the predefined compensation factor, PL is the path loss value on the first beam, Pmax is the predefined maximum transmission power of the uplink signal, μ is the parameter corresponding to the subcarrier spacing, and Gnb is the beam gain factor, which is related to the width of the second beam and the width of the first beam.

Based on this embodiment, in a scenario where there is only uplink or uplink is dominant, the path loss value on the corresponding path can be determined by referring to the signal strength of the first random access sequence, so that the terminal device can set an appropriate uplink signal transmission power on the path to reduce unnecessary energy consumption. Furthermore, a method for setting the transmission power of the uplink signal when the beam for transmitting the uplink signal is a wide beam and a narrow beam is provided.

It should be noted that although the first information includes identification information of N first random access sequences, the terminal device can, based on the first information, clearly need to send uplink signals with a determined power in the directions corresponding to the beams transmitting the N first random access sequences, but it is not currently clear in which specific directions among the directions corresponding to the beams of the N first random access sequences the uplink signal beam scanning is performed.

In view of this, the present application proposes another communication method, which can effectively solve the above technical problems. The method proposed in the present application is described in detail below.

As shown in Figure 5, Figure 5 is a schematic block diagram of another communication method provided in an embodiment of the present application. As an example, based on the network architecture shown in Figure 1, the second network device in the solution can be regarded as network device 200, the first network device can be regarded as network device 300, and the random access sequence can be regarded as a random access preamble.

S510: The terminal device sends M first random access sequences to the second network device. Correspondingly, the second network device receives the M first random access sequences from the second network device.

S520, the network side device (the first network device or the second network device) sends the first information to the terminal device. Correspondingly, the terminal device receives the first information from the network side. The first information includes identification information of N first random access sequences among the M first random access sequences, the identification information is associated with the beam of the corresponding first random access sequence, and N is a positive integer.

For the description of S510 and S520, please refer to the description of S310 and S320, which will not be repeated here.

It should be understood that the embodiments corresponding to Figure 3 and Figure 5 are respectively used to determine the transmission power of the uplink signal and the transmission direction of the uplink signal. Therefore, the same concepts in the embodiments corresponding to Figure 3 and Figure 5 can be referenced to each other, and will not be described one by one in this embodiment.

S530, the first network device sends third information to the terminal device, where the third information indicates sending L uplink signals. Correspondingly, the terminal device receives the third information from the first network device.

For ease of description, in this embodiment, the beam transmitting the first random access sequence is referred to as the first beam, and the beam transmitting the uplink signal is referred to as the second beam. Then, when the terminal device sends an uplink signal in the direction of the N first beams transmitting the N first random access sequences, since the width of the L second beams transmitting the L uplink signals may not be the same as the width of the N first beams, the terminal device needs to further determine in which directions of the N first beams the uplink signal is sent. See the description in S540 for details.

S540, when the product of L and the width of the second beam is less than the product of N and the width of the first beam, the terminal device performs at least one second beam An uplink signal is sent to a second network device on a beam, where the at least one second beam is associated with P first beams, wherein the P first beams are partial beams of the N first beams that transmit N first random access sequences, and P is a positive integer.

It should be understood that at least one second beam is associated with P first beams, which means that at least one uplink signal is sent in the direction of the P first beams. Each signal in the at least one uplink signal corresponds to a second beam one-to-one, or multiple signals in the at least one uplink signal correspond to a second beam, that is, multiple uplink signals can be sent in the direction of a second beam, and it can be sent more than once. There can be multiple transmissions in one beam direction. Specifically, the direction of at least one second beam can completely cover the direction of the P first beams.

Optionally, the widths of the P first beams satisfy the following condition: the product of L and the width of the second beam is greater than or equal to the product of P and the width of the first beam.

The following example is used in conjunction with FIG6 and FIG7 to illustrate why uplink signals are sent only on P first beams when the product of L and the width of the second beam is less than the product of N and the width of the first beam.

Figure 6 is a schematic diagram of random access sequence detection. As shown in Figure 6, M (M=4) first random access sequences include a random access sequence sent by the terminal device through beam #1, a random access sequence sent through beam #2, a random access sequence sent through beam #3, and a random access sequence sent through beam #4. The second network device detects the random access sequence sent through beam #1 and the random access sequence sent through beam #2, and determines the random access sequence sent through beam #1 and the random access sequence sent through beam #2 as N (N=2) first random access sequences. The following is combined with Figure 7 to further explain in which directions the uplink signals are sent in which beams in beam #1 and beam #2.

FIG7 is a schematic diagram of uplink signal transmission within the angle of beam #1 and beam #2. For example, the beam width of beam #1 and beam #2 (i.e., the width of the first beam) is 45°, and the width of the second beam is 15°. Then, the direction of beam #1 or beam #2 (i.e., a first beam) requires 3 second beams to be fully scanned. Then, for beam #1 and beam #2, i.e., the direction of the two first beams, at least 6 second beams are required to ensure a round of scanning. Then, if L is less than 6, for example, L is equal to 4, it is impossible to scan on beam #1 and beam #2 at the same time, then the terminal device can choose to perform the second beam scanning only in the direction of the beam with the best signal strength among beam #1 and beam #2.

In another case, when the product of L and the width of the second beam is greater than or equal to the product of N and the width of the first beam, the terminal device sends an uplink signal to the second network device on at least one second beam, and the at least one second beam is associated with the N first beams.

It should be understood that at least one second beam is associated with N first beams, which means that at least one uplink signal is sent in the direction of the N first beams. Each signal in the at least one uplink signal corresponds to a second beam one-to-one, or multiple signals in the at least one uplink signal correspond to a second beam, that is, multiple uplink signals can be sent in the direction of a second beam. Specifically, the direction of the at least one second beam can completely cover the direction of the N first beams.

That is to say, when the beam widths corresponding to the L second beams cannot completely cover the directions of the N first beams, the terminal device can transmit L uplink signals with Q1 second beams only in the directions of some of the N first beams, where Q1 is less than or equal to L. When the beam widths corresponding to the L second beams can completely cover the directions of the N first beams, the terminal device can transmit L uplink signals with Q2 second beams in the directions of the N first beams, where Q2 is less than or equal to L.

It should be noted that this method is applicable to the scenario where the second beam is a wide beam or a narrow beam. This application does not limit this.

For example, the signal strengths of the P first random access sequences transmitted by the P first beams are greater than or equal to the signal strengths of the other sequences in the N first random access sequences except the P first random access sequences. Then, optionally, before S540, the method further includes:

S550: The network side device (the first network device or the second network device) sends the second information to the terminal device. Correspondingly, the terminal device receives the second information from the network side.

For the description of S550, please refer to the description of S320, which will not be repeated here.

The above technical solution describes in detail how to perform directional uplink signal beam scanning. The present application provides another method for determining the transmission power of an uplink signal, in which the terminal device does not receive the second information, that is, does not receive the information on the signal strength of the first random access sequence, and the method is described in conjunction with FIG8.

As shown in Fig. 8, Fig. 8 is a schematic block diagram of another communication method provided in an embodiment of the present application. As an example, the random access sequence can be regarded as a random access preamble.

It should be noted that this embodiment can be implemented alone or in combination with other embodiments in the present application.

S810, the terminal device determines a second power, where the second power is one of a plurality of predefined powers for sending an uplink signal, wherein the second power is determined based on a reference power, where the reference power is determined based on a PUSCH before the terminal device sends a first uplink signal or a power of a reference signal for measurement.

For example, the PUSCH before sending the first uplink signal is the PUSCH sent most recently before sending the first uplink signal, or, The PUSCH sent the most recently X times before the first uplink signal is sent, or the PUSCH sent within a time period before the first uplink signal is sent. Then, for example, the reference power may be the power of the PUSCH sent the most recently before the first uplink signal is sent, or the average or weighted average of the power of the PUSCH sent the most recently X times before; or the average or weighted average of the power of the PUSCH within a time period.

Similarly, by way of example, the reference signal before sending the first uplink signal is the reference signal sent most recently before sending the first uplink signal, or the reference signal sent most recently X times before sending the first uplink signal, or the reference signal sent within a time period before sending the first uplink signal. Then, by way of example, the reference power may be the power of the reference signal sent most recently before sending the first uplink signal, or the average or weighted average of the powers of the reference signals sent most recently X times before; or the average or weighted average of the powers of the reference signals within a time period.

As an example, the reference signal may be a reference signal used for channel measurement or beam management, for example, at least one of SRS, CSI-RS, DMRS or preamble.

In a possible implementation manner, the terminal device may determine the second power by itself from a plurality of predefined powers for sending uplink signals.

In another possible implementation, the terminal device may determine the second power by the second network device determining the second power from a plurality of predefined powers for sending uplink signals, and then sending the second power to the terminal device or forwarding the second power to the terminal device by other network devices.

For example, the predefined (or preconfigured) multiple powers for sending uplink signals include 23 dBm, 20 dBm, and 17 dBm.

In the present application, pre-definition or pre-configuration may be configured by the network device through RRC signaling, or may be pre-specified.

In a possible implementation, the second power is the minimum power among all powers greater than or equal to the reference power among the multiple powers. For example, the reference power is 17.5 dBm, and the powers greater than or equal to the reference power among the predefined multiple powers are 23 dBm and 20 dBm, then the second power is 20 dBm.

In another possible implementation, the second power is the maximum power among all powers less than or equal to the reference power among the multiple powers. For example, the reference power is 21.5 dBm, and the power less than or equal to the reference power among the predefined multiple powers is 20 dBm, 17 dBm, then the second power is 20 dBm.

In another possible implementation, the second power is the power with the smallest deviation from the reference power among the multiple powers. For example, the reference power is 21.5 dBm, and the power with the smallest deviation from the reference power among the predefined multiple powers is 17 dBm, then the second power is 17 dBm.

In another possible implementation, the second power is the minimum power among multiple powers (this method can save energy), or the second power is the maximum power among multiple powers (this method can maximize the performance of the terminal device).

S820, the terminal device sends a first uplink signal to the second network device according to the second power.

It should be understood that the second network device here generally refers to any network device, for example, the network device 200 or the network device 300 in FIG. 1 .

For example, the first uplink signal may be SRS, CSI-RS, DMRS or preamble, or any uplink transmission signal.

It should be understood that in this embodiment, the power value to be used to send the uplink signal needs to be clearly defined because: 1) the network device and the terminal device may have inconsistent understandings of the specific real-time power value of the terminal device. The specific reason may be that the path loss value on the corresponding path is not aligned, such as the loss of the transmission power control command (TPC), the power headroom report (PHR) is reported slowly, etc. As time goes by, the deviation will be amplified, and the network device cannot obtain the path loss value and cannot determine the target power value; 2) The power calculated based on the formula for determining the first power in S340 can be any value and needs to be quantified and notified. The present application uses a fixed power value, which can reduce the energy consumption caused by the re-quantization notification of other power values.

Based on this embodiment, the terminal device is enabled to set an appropriate uplink signal transmission power. At the same time, the second power is determined based on the power of the PUSCH or reference signal before the uplink signal is sent, which can ensure that the power value of the uplink signal is both interference and power consumption. For example, the second power is determined based on the power value of the most recent PUSCH as the reference power, which can ensure that the signal detection performance is close to the PUSCH demodulation performance.

It should be noted that the method shown in FIG8 is not limited to the uplink-dominated or uplink-only scenario, and the method can be applied to any scenario where the transmission power of the uplink signal needs to be determined. The following description is continued with reference to FIG8 taking the uplink supplementary scenario shown in FIG1 as an example. As an example, based on the network architecture shown in FIG1, the second network device in the solution can be regarded as the network device 200, and the first network device can be regarded as the network device 300. Before S810, the method also includes the following S830 and S840.

S830: The terminal device sends M first random access sequences to the second network device. Correspondingly, the second network device receives the M first random access sequences from the second network device.

S840: The network side device (the first network device or the second network device) sends first information to the terminal device. The first information includes identification information of N first random access sequences among the M first random access sequences, and the identification information is consistent with the first random access sequence corresponding to the transmission. The terminal device receives the first information from the network side.

For S830 and S840, please refer to the description of S310 and S320, which will not be repeated here. S830 and S840 are optional implementation steps.

Then, in S820, the terminal device sends the first uplink signal to the second network device according to the second power, including: the terminal device sends the first uplink signal to the second network device on the second beam according to the second power, the second beam is associated with the first beam, the first beam is a beam for transmitting a second random access sequence, and the second random access sequence is one of N random access sequences. Correspondingly, the second network device receives the first uplink signal from the terminal device.

In one possible implementation, the terminal device can obtain the path loss value on the first beam, and then update the transmission power (i.e., reference power) of the next PUSCH or reference signal for measurement after sending the first uplink signal based on the path loss value on the first beam. The path loss value of the first beam is determined based on the second power and the signal strength of the first uplink signal received by the second network device.

For example, the path loss value is equal to a difference between the second power and a signal strength of the first uplink signal received by the second network device.

Optionally, the terminal device obtains the path loss value on the first beam by: the terminal device receives fourth information from the network side device, the fourth information includes the signal strength of the first uplink signal received by the second network device; the terminal device determines the path loss value on the first beam based on the second power and the signal strength of the first uplink signal.

Optionally, the terminal device obtains the path loss value on the first beam by: the terminal device receives fifth information from the network side device, and the fifth information includes the path loss value on the first beam.

It should be noted that the concept of beam only exists in high frequency bands. S830 and S840 are related processes in high frequency scenarios. When not limited to high frequency scenarios, the path loss value can be obtained in the following ways.

Optionally, the terminal device obtains the path loss value by: the terminal device receives fourth information from the second network device, the fourth information includes the signal strength of the first uplink signal received by the second network device; the terminal device determines the path loss value according to the second power and the signal strength of the first uplink signal.

Optionally, the terminal device obtains the path loss value by: the terminal device receives fifth information from the second network device, and the fifth information includes the path loss value. It should be noted that in this implementation, if the path loss value is determined by the second network device, and the second power is determined by the terminal device itself, the terminal device also needs to inform the second network device of the determined second power. For example, the terminal device can make the second network device aware of the second power by explicit (for example, through uplink control information (UCI) reporting index) or implicit (associated with sequence/resource) indication.

It should be noted that the method shown in FIG. 8 is not limited to the uplink-dominated or uplink-only scenario, and the method can be applied to any scenario where the transmission power of the uplink signal needs to be determined.

When the terminal device sends a random access sequence by polling, if the network device detects multiple random access sequences, when performing RAR feedback to the terminal device, multiple pieces of information to be fed back can be merged into one RAR. Because when the existing terminal device detects RAR, the RA-RNTI used is determined based on the time-frequency resources used by the random access sequence sent previously. Similarly, when the network device determines the RAR, the scrambled RA-RNTI is also determined based on the time-frequency resources used by the random access sequence sent by the terminal device previously detected. When a RAR fed back by the network device to the terminal device contains feedback information for multiple random access sequences, how the network device and the terminal device scramble and descramble the RAR is an issue that needs to be resolved.

As shown in Figure 9, Figure 9 is a schematic block diagram of another communication method provided in an embodiment of the present application. As an example, the random access sequence in this embodiment can be regarded as a random access preamble.

S910, the terminal device sends multiple random access sequences to the network device. Correspondingly, the network device receives multiple random access sequences from the terminal device.

Optionally, multiple random access sequences may be sent on at least one beam. For example, multiple random access sequences may be sent on different beams or on the same beam.

S920, the network device sends a response message to the terminal device. Correspondingly, the terminal device receives the response information from the network device.

The response information includes feedback information of at least one random access sequence among multiple random access sequences, the response information is encrypted based on RA-RNTI, the RA-RNTI is an RNTI generated based on time-frequency resource information of a first random access sequence, the first random access sequence is a sequence determined among multiple random access sequences based on a first rule, or the first random access sequence is a sequence indicated by a network device to a terminal device, that is, the first random access sequence may be included in multiple random access sequences or may not be included in multiple random access sequences.

Among them, time-frequency resources can be understood as resources.

For example, for a network device, the first rule indicates that the first random access sequence is the first random access sequence detected among multiple random access sequences. For a terminal device, the first rule indicates that the first random access sequence is the first random access sequence sent among multiple random access sequences.

For example, for a network device, the first rule indicates that the first random access sequence is the last random access sequence detected among multiple random access sequences, and correspondingly, for a terminal device, the first rule indicates that the first random access sequence is the last random access sequence sent among multiple random access sequences. Examples are not given one by one here.

By way of example, the first rule may be a predefined rule, or the first rule may be a rule indicated by the network device.

In the present application, the network device indicating to the terminal device may be the network device indicating to the terminal device via RRC signaling; the network device indicating may be the network device indicating via RRC signaling.

Optionally, the response information in S920 is encrypted with the RA-RNTI generated based on the time-frequency resource information of the first random access sequence. Correspondingly, the terminal device descrambles the response message based on the RA-RNTI generated based on the time-frequency resource information of the first random access sequence, which can be understood as descrambling the response message based on the RA-RNTI generated based on the time-frequency resource information of the first random access sequence. For example, the response message is RAR, and the response information is carried on PDSCH.

Optionally, the response information in S920 is RA-RNTI scrambled based on the time-frequency resource information of the first random access sequence, which can also be understood as the control information for scheduling the response information or the CRC of the control information for scheduling the response information is RA-RNTI scrambled based on the time-frequency resource information of the first random access sequence. Correspondingly, the terminal device descrambles the response message based on the RA-RNTI generated by the time-frequency resource information of the first random access sequence, which can be understood as descrambling the control information for scheduling the response information or descrambling the CRC of the control information for scheduling the response information based on the RA-RNTI of the first random access sequence. For example, the response message is RAR, and the response information is carried on PDSCH.

It should be understood that the network device and the terminal device determine that the first random access sequence is the same sequence based on the same first rule. In this way, the network device scrambles the response message based on the RA-RNTI of the determined first random access sequence, and the terminal device descrambles the response message based on the RA-RNTI of the same first random access sequence.

In the method, by using the first rule to limit or the network device to indicate the first random access sequence, the terminal device does not need to derive the RA-RNTI of multiple random access sequences sent by different time-frequency resources respectively, and does not need to detect the RAR of multiple random access sequences sent by different time-frequency resources respectively, thereby reducing the detection complexity.

S930, the terminal device descrambles the response message based on the RA-RNTI generated based on the time-frequency resource information of the first random access sequence.

For example, the feedback information in S920 includes identification information of at least one random access sequence, and the identification information of a random access sequence includes: an index of the random access sequence, an index of the time-frequency resources of the random access sequence, an index of the random access moment or opportunity index of the random access sequence, an index of the starting point of the time resources of the random access sequence, an index of the time resources of the random access sequence, an index of the frequency resources of the random access sequence, and one or more of the PRACH index or PRACH mask index of the first subframe where the PRACH carrying the random access sequence is located.

It should be noted that the method shown in Figure 9 is not limited to the scenario of uplink dominance or uplink only. As shown in Figure 1, in the scenario of uplink dominance or uplink only, the identification information in the feedback information is associated with the beam of the corresponding random access sequence for transmission. For the meaning of the identification information being associated with the beam of the transmission of at least one random access sequence, refer to the description corresponding to the association of the identification information with the beam of the corresponding first random access sequence for transmission in S320, which will not be repeated here. In this way, the terminal device can determine the beam to send the uplink signal to the network device 200 based on the identification information. Please refer to the description in the embodiment corresponding to Figure 3 for details, which will not be elaborated here.

In the above technical solution, it can be ensured that when the response message contains feedback information of multiple random access sequences, the terminal device can quickly descramble the response message to obtain corresponding information, thereby reducing unnecessary descrambling overhead.

It should be understood that in the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

It should also be understood that in some of the above embodiments, the devices in the existing network architecture are mainly used as examples for exemplary description, and it should be understood that the embodiments of the present application do not limit the specific form of the devices. For example, devices that can achieve the same function in the future are applicable to the embodiments of the present application.

It can be understood that in the above-mentioned various method embodiments, the methods and operations implemented by devices (such as the above-mentioned terminal devices, network devices, etc.) can also be implemented by components of the devices (such as chips or circuits).

The method provided by the embodiment of the present application is described in detail above in conjunction with Figures 1 to 9. The above method is mainly introduced from the perspective of interaction between the terminal device and the network device. It can be understood that the terminal device and the network device, in order to implement the above functions, include hardware structures and/or software modules corresponding to the execution of each function.

Those skilled in the art should be aware that, in combination with the units and algorithm steps of the various examples described in the embodiments disclosed herein, the present invention The application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed in hardware or in the form of computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

Hereinafter, the communication device provided by the embodiment of the present application is described in detail in conjunction with Figures 10 and 11. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, the content not described in detail can refer to the method embodiment above. For the sake of brevity, some contents are not repeated. The embodiment of the present application can divide the functional modules of the terminal device or network device according to the above method example. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic, which is only a logical function division, and there may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function.

The above describes in detail the method for data transmission provided by the present application. The following describes the communication device provided by the present application. In one possible implementation, the device is used to implement the steps or processes corresponding to the terminal device in the above method embodiment. In another possible implementation, the device is used to implement the steps or processes corresponding to the network device in the above method embodiment.

FIG10 is a schematic block diagram of a communication device 200 provided in an embodiment of the present application. As shown in FIG10 , the device 200 may include a communication unit 210 and a processing unit 220. The communication unit 210 may communicate with the outside, and the processing unit 220 is used for data processing. The communication unit 210 may also be referred to as a communication interface or a transceiver unit.

In one possible design, the device 200 can implement steps or processes corresponding to those executed by the network device in the above method embodiment, wherein the processing unit 220 is used to execute processing-related operations of the network device in the above method embodiment, and the communication unit 210 is used to execute sending-related operations of the network device in the above method embodiment.

In another possible design, the device 200 can implement steps or processes corresponding to those executed by the terminal device in the above method embodiment, wherein the communication unit 210 is used to execute reception-related operations of the terminal device in the above method embodiment, and the processing unit 220 is used to execute processing-related operations of the terminal device in the above method embodiment.

It should be understood that the device 200 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit and/or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the device 200 can be specifically a network device in the above-mentioned embodiment, and can be used to execute the various processes and/or steps corresponding to the network device in the above-mentioned method embodiment, or the device 200 can be specifically a terminal device in the above-mentioned embodiment, and can be used to execute the various processes and/or steps corresponding to the terminal device in the above-mentioned method embodiment. To avoid repetition, it will not be repeated here.

The apparatus 200 of each of the above-mentioned schemes has the function of implementing the corresponding steps executed by the network device in the above-mentioned method, or the apparatus 200 of each of the above-mentioned schemes has the function of implementing the corresponding steps executed by the terminal device in the above-mentioned method. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the communication unit can be replaced by a transceiver (for example, the sending unit in the communication unit can be replaced by a transmitter, and the receiving unit in the communication unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor, respectively performing the sending and receiving operations and related processing operations in each method embodiment.

In addition, the above-mentioned communication unit can also be a transceiver circuit (for example, it can include a receiving circuit and a sending circuit), and the processing unit can be a processing circuit. In an embodiment of the present application, the device in Figure 10 can be a terminal device or a network device in the aforementioned embodiment, or it can be a chip or a chip system, for example: a system on chip (SoC). Among them, the communication unit can be an input and output circuit, a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip. This is not limited here.

FIG11 is a schematic block diagram of a communication device 300 provided in an embodiment of the present application. The device 300 includes a processor 310 and a transceiver 320. The processor 310 and the transceiver 320 communicate with each other through an internal connection path, and the processor 310 is used to execute instructions to control the transceiver 320 to send signals and/or receive signals.

Optionally, the device 300 may further include a memory 330, and the memory 330 communicates with the processor 310 and the transceiver 320 through an internal connection path. The memory 330 is used to store instructions, and the processor 310 can execute the instructions stored in the memory 330. In one possible implementation, the device 300 is used to implement the various processes and steps corresponding to the network device in the above method embodiment. In another possible implementation, the device 300 is used to implement the various processes and steps corresponding to the terminal device in the above method embodiment.

It should be understood that the device 300 may be specifically a network device or a terminal device in the above embodiment, or may be a chip or a chip system. Correspondingly, the transceiver 320 may be a transceiver circuit of the chip, which is not limited here. Specifically, the device 300 may be used to perform the above The processor 310 may be used to execute the instructions stored in the memory, and when the processor 310 executes the instructions stored in the memory, the processor 310 is used to execute the steps and/or processes of the method embodiments corresponding to the network device or the terminal device. Optionally, the memory 330 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory. For example, the memory may also store information about the device type. The processor 310 may be used to execute the instructions stored in the memory, and when the processor 310 executes the instructions stored in the memory, the processor 310 is used to execute the steps and/or processes of the method embodiments corresponding to the network device or the terminal device.

In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in a processor for execution. The software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

It should be noted that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be 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 devices, discrete gates or transistor logic devices, discrete hardware components. The processor in the embodiment of the present application can implement or execute the methods, steps and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined and performed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.

In addition, the present application also provides a computer-readable storage medium, in which computer instructions are stored. When the computer instructions are executed on a computer, the operations and/or processes performed by the terminal device in each method embodiment of the present application are executed.

The present application also provides a computer program product, which includes computer program code or instructions. When the computer program code or instructions are run on a computer, the operations and/or processes performed by the terminal device in the various method embodiments of the present application are executed.

In addition, the present application also provides a chip, the chip including a processor. A memory for storing a computer program is provided independently of the chip, and the processor is used to execute the computer program stored in the memory, so that the operation and/or processing performed by the terminal device in any one of the method embodiments is executed.

Furthermore, the chip may further include a communication interface. The communication interface may be an input/output interface, or an interface circuit, etc. Furthermore, the chip may further include a memory.

In addition, the present application also provides a computer-readable storage medium, in which computer instructions are stored. When the computer instructions are executed on a computer, the operations and/or processes performed by a network device (e.g., a first network device or a second network device) in each method embodiment of the present application are executed.

The present application also provides a computer program product, which includes computer program code or instructions. When the computer program code or instructions are run on a computer, the operations and/or processes performed by a network device (such as a first network device or a second network device) in each method embodiment of the present application are executed.

In addition, the present application also provides a chip, the chip including a processor. A memory for storing a computer program is independent of the chip. The processor is configured to execute a computer program stored in the memory so that the operations and/or processes performed by the network device (eg, the first network device or the second network device) in any one of the method embodiments are executed.

In addition, the present application also provides a communication system, including the terminal device and network device in the embodiments of the present application.

It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

It can be appreciated by a person skilled in the art that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application. It can be clearly understood by a person skilled in the art that for the convenience and simplicity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. In several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiment described above is only schematic, for example, the division of the unit is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

It should be understood that the "embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the various embodiments in the entire specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

It should also be understood that the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority or importance of multiple objects. For example, the first information and the second information do not represent the difference in information volume, content, priority or importance.

It should also be understood that in the present application, "when", "if" and "if" all mean that the network element will take corresponding actions under certain objective circumstances, and do not limit the time, nor do they require the network element to take judgment actions when implementing it, nor do they mean that there are other limitations.

It should also be understood that in this application, "at least one" means one or more, and "plurality" means two or more. "At least one item" or similar expressions means one or more items, that is, any combination of these items, including any combination of single items or plural items. For example, at least one item of a, b, or c means: a, b, c, a and b, a and c, b and c, or a, b and c.

It should also be understood that the meaning of expressions similar to "the project includes one or more of the following: A, B, and C" in this application, unless otherwise specified, generally means that the project can be any of the following: A; B; C; A and B; A and C; B and C; A, B and C; A and A; A, A and A; A, A and B; A, A and C, A, B and B; A, C and C; B and B, B, B and B, B, B and C, C and C; C, C and C, and other combinations of A, B and C. The above is an example of three elements, A, B and C, to illustrate the optional items of the project. When it is expressed as "the project includes at least one of the following: A, B, ..., and X", that is, when there are more elements in the expression, the items that can be applied to the project can also be obtained according to the above rules.

It should also be understood that the term "and/or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. For example, A/B means: A or B.

It should also be understood that in each embodiment of the present application, "A corresponds to B" means that B is associated with A, and B can be determined based on A. It is understood that determining B based on A does not mean determining B based only on A, but B can also be determined based on A and/or other information.

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

Claims

A communication method, comprising:

The terminal device sends M first random access sequences to the second network device;

The terminal device receives first information and second information from the first network device or the second network device, where the first information includes identification information of N first random access sequences among M first random access sequences, and the identification information is associated with a beam transmitting the corresponding first random access sequence; and the second information includes signal strengths of the N first random access sequences received by the second network device, where N is a positive integer;

The terminal device determines a path loss value on a first beam according to a transmit power of a second random access sequence and a signal strength of the second random access sequence received by the second network device, where the first beam is a beam for transmitting the second random access sequence, and the second random access sequence is one of the N random access sequences;

The terminal device sends an uplink signal to the second network device on a second beam according to a first power, the second beam is associated with the first beam, and the first power is determined based on the path loss value.
A communication method, comprising:

The second network device receives M first random access sequences from the terminal device;

The second network device sends a first message to the first network device, where the first message is used to determine first information and second information, where the first information includes identification information of N first random access sequences among M first random access sequences, where the identification information is associated with a beam for transmitting the corresponding first random access sequence, and the second information includes signal strengths of the N first random access sequences received by the second network device, where N is a positive integer, wherein the second information is used to determine a path loss value on the first beam with a transmit power of a second random access sequence, where the first beam is a beam for transmitting the second random access sequence, and where the second random access sequence is one of the N random access sequences;

The second network device receives an uplink signal from the terminal device on a second beam, the second beam is associated with the first beam, the transmission power of the uplink signal is a first power, and the first power is determined based on the path loss value.
A communication method, comprising:

A first network device receives a first message from a second network device, where the first message is used to determine first information and second information, where the first information includes identification information of N first random access sequences, where the N first random access sequences are included in M first random access sequences, where the M first random access sequences are sequences sent by the terminal device to the second network device, and the identification information is associated with a beam for transmitting the corresponding first random access sequence; the second information includes signal strengths of the N first random access sequences received by the second network device, where N is a positive integer, where the second information is used to determine a path loss value on the first beam with a transmit power of the second random access sequence, where the first path loss value is used to determine a first power, where the first power is a power for transmitting an uplink signal on the second beam, where the second beam is associated with the first beam, where the first beam is a beam for transmitting the second random access sequence, and where the second random access sequence is one of the N random access sequences;

The first network device sends the first information and the second information to the terminal device.
The method according to claim 2 or 3 is characterized in that the first message includes the first information and the second information, or the first message includes identification information of M first random access sequences and signal strengths of the M first random access sequences received by the second network device.
The method according to any one of claims 1 to 4, characterized in that

When the width of the second beam is smaller than the width of the first beam, the first power P satisfies the following formula:
P＝min{P max ,P O +10log(2 μ *M)+α*PL-Gnb}

Among them, Po is the preconfigured target receiving power of the uplink signal, M is the preconfigured transmission bandwidth of the uplink signal, α is a predefined compensation factor, PL is the path loss value, P max is the predefined maximum transmission power of the uplink signal, μ is a parameter corresponding to the subcarrier spacing, and Gnb is a beam gain factor, which is related to the width of the second beam and the width of the first beam.
The method according to any one of claims 1 to 4, characterized in that

When the width of the second beam is equal to the width of the first beam, the first power P satisfies the following formula:
P＝min{P max ,P O +10log(2 μ *M)+α*PL}

Among them, Po is the pre-configured target receiving power of the uplink signal, M is the pre-configured transmission bandwidth of the uplink signal, α is a predefined compensation factor, PL is the path loss value on the first beam, P max is the pre-defined maximum transmission power of the uplink signal, and μ is the parameter corresponding to the subcarrier spacing.
A communication method, comprising:

The terminal device sends a plurality of random access sequences to the network device;

The terminal device receives response information from the network device, the response information including feedback information of at least one random access sequence among the multiple random access sequences, the response information is scrambled based on a random access radio network temporary identifier RA-RNTI, the RA-RNTI is an RNTI generated based on time-frequency resource information of a first random access sequence, the first random access sequence is a sequence determined among the multiple random access sequences based on a first rule, or the first random access sequence is a sequence indicated by the network device to the terminal device;

The terminal device descrambles the response message based on the RA-RNTI.
The method according to claim 7, characterized in that the feedback information includes identification information of the at least one random access sequence, the identification information is associated with a beam corresponding to the at least one random access sequence transmitted, and the method further comprises:

The terminal device sends an uplink signal to the network device on a second beam, the second beam is associated with the first beam, the first beam is a beam for transmitting a second random access sequence, and the second random access sequence is one of the at least one random access sequence.
A communication method, comprising:

The network device receives a plurality of random access sequences from the terminal device;

The network device generates a response message, the response information including feedback information of at least one random access sequence among the multiple random access sequences, the response information being scrambled based on a random access radio network temporary identifier RA-RNTI, the RA-RNTI being an RNTI generated based on time-frequency resource information of a first random access sequence, the first random access sequence being a sequence determined among the multiple random access sequences based on a first rule, or the first random access sequence being a sequence indicated by the network device to the terminal device;

The network device sends the response message to the terminal device.
The method according to claim 9, characterized in that the feedback information includes identification information of the at least one random access sequence, the identification information is associated with a beam corresponding to the at least one random access sequence transmitted, and the method further comprises:

The network device receives an uplink signal from the terminal device on a second beam, where the second beam is associated with a first beam, where the first beam is a beam for transmitting a second random access sequence, and where the second random access sequence is one of the at least one random access sequence.
The method according to any one of claims 7 to 10 is characterized in that the first rule indicates that the first random access sequence is the first random access sequence sent among the multiple random access sequences, or the first rule indicates that the first random access sequence is the last random access sequence sent among the multiple random access sequences.
The method according to any one of claims 7 to 11, characterized in that the response information is scrambled based on RA-RNTI, including:

A cyclic redundancy check CRC of control information for scheduling the response information is scrambled based on the RA-RNTI, or the response information is scrambled based on the RA-RNTI.
A communication device, comprising:

A communication unit, configured to send M first random access sequences to a second network device;

The communication unit is further configured to receive first information and second information from the first network device or the second network device, wherein the first information includes identification information of N first random access sequences among the M first random access sequences, and the identification information is associated with a beam for transmitting the corresponding first random access sequence, and the second information includes signal strengths of the N first random access sequences received by the second network device, where N is a positive integer;

a processing unit, configured to determine a path loss value on a first beam according to a transmit power of a second random access sequence and a signal strength of the second random access sequence received by the second network device, where the first beam is a beam for transmitting the second random access sequence, and the second random access sequence is one of the N random access sequences;

The processing unit is further configured to send an uplink signal to the second network device on a second beam according to a first power, where the second beam is associated with the first beam, and the first power is determined based on the path loss value.
A communication device, comprising:

A communication unit, configured to receive M first random access sequences from a terminal device;

The communication unit is further used to send a first message to the first network device, where the first message is used to determine first information and second information, where the first information includes identification information of N first random access sequences among M first random access sequences, where the identification information is associated with a beam for transmitting the corresponding first random access sequence, and the second information includes signal strengths of the N first random access sequences received by the second network device, where N is a positive integer, wherein the second information is used to determine a path loss value on the first beam with a transmit power of a second random access sequence, where the first beam is a beam for transmitting the second random access sequence, and where the second random access sequence is one of the N random access sequences;

The communication unit is further used to receive an uplink signal from the terminal device on a second beam, the second beam is associated with the first beam, the transmission power of the uplink signal is a first power, and the first power is determined based on the path loss value.
A communication device, comprising:

A communication unit, configured to receive a first message from a second network device, wherein the first message is used to determine first information and second information, wherein the first information includes identification information of N first random access sequences, wherein the identification information is associated with a beam for transmitting the corresponding first random access sequence, wherein the N first random access sequences are included in M first random access sequences, wherein the M first random access sequences are sequences sent by the terminal device to the second network device, and wherein the second information includes signal strengths of the N first random access sequences received by the second network device, wherein N is a positive integer, wherein the second information is used to determine a path loss value on the first beam together with a transmit power of the second random access sequence, wherein the first path loss value is used to determine a first power, wherein the first power is a power for transmitting an uplink signal on the second beam, wherein the second beam is associated with the first beam, wherein the first beam is a beam for transmitting the second random access sequence, and wherein the second random access sequence is one of the N random access sequences;

The communication unit is further used to send the first information and the second information to a terminal device.
The device according to claim 14 or 15 is characterized in that the first message includes the first information and the second information, or the first message includes identification information of the M first random access sequences and signal strengths of the M first random access sequences received by the second network device.
The device according to any one of claims 13 to 16, characterized in that

When the width of the second beam is smaller than the width of the first beam, the first power P satisfies the following formula:
P＝min{P max ,P O +10log(2 μ *M)+α*PL-Gnb}

Among them, Po is the preconfigured target receiving power of the uplink signal, M is the preconfigured transmission bandwidth of the uplink signal, α is a predefined compensation factor, PL is the path loss value, P max is the predefined maximum transmission power of the uplink signal, μ is a parameter corresponding to the subcarrier spacing, and Gnb is a beam gain factor, which is related to the width of the second beam and the width of the first beam.
The device according to any one of claims 13 to 16, characterized in that

When the width of the second beam is equal to the width of the first beam, the first power P satisfies the following formula:
P＝min{P max ,P O +10log(2 μ *M)+α*PL}

Among them, Po is the pre-configured target receiving power of the uplink signal, M is the pre-configured transmission bandwidth of the uplink signal, α is a predefined compensation factor, PL is the path loss value on the first beam, P max is the pre-defined maximum transmission power of the uplink signal, and μ is the parameter corresponding to the subcarrier spacing.
A communication device, comprising:

A communication unit, configured to send a plurality of random access sequences to a network device;

The communication unit is further used to receive response information from a network device, the response information including feedback information of at least one random access sequence among the multiple random access sequences, the response information being scrambled based on a random access radio network temporary identifier RA-RNTI, the RA-RNTI being an RNTI generated based on time-frequency resource information of a first random access sequence, the first random access sequence being a sequence determined among the multiple random access sequences based on a first rule, or the first random access sequence being a sequence indicated by the network device to the terminal device;

A processing unit is configured to descramble the response message based on the RA-RNTI.
The device according to claim 19 is characterized in that the feedback information includes identification information of the at least one random access sequence, the identification information is associated with the beam of the at least one random access sequence corresponding to the transmission, and the communication unit of the device is specifically used to: send an uplink signal to the network device on a second beam, the second beam is associated with the first beam, the first beam is a beam for transmitting a second random access sequence, and the second random access sequence is one of the at least one random access sequence.
A communication device, comprising:

A communication unit, configured to receive a plurality of random access sequences from a terminal device;

a processing unit, configured to generate a response message, the response information including feedback information of at least one random access sequence among the multiple random access sequences, the response information being scrambled based on a random access radio network temporary identifier RA-RNTI, the RA-RNTI being an RNTI generated based on time-frequency resource information of a first random access sequence, the first random access sequence being a sequence determined among the multiple random access sequences based on a first rule, or the first random access sequence being a sequence indicated by the network device to the terminal device;

The communication unit is used to send the response message to the terminal device.
The device according to claim 21 is characterized in that the feedback information includes identification information of the at least one random access sequence, the identification information is associated with the beam of the at least one random access sequence corresponding to the transmission, and the communication unit is specifically used to: receive an uplink signal from the terminal device on a second beam, the second beam is associated with the first beam, the first beam is a beam for transmitting a second random access sequence, and the second random access sequence is one of the at least one random access sequence.
The device according to any one of claims 19 to 22 is characterized in that the first rule indicates that the first random access sequence is the first random access sequence sent among the multiple random access sequences, or the first rule indicates that the first random access sequence is the last random access sequence sent among the multiple random access sequences.
The apparatus according to any one of claims 19 to 23, wherein the response information is scrambled based on the RA-RNTI, and comprises:

A cyclic redundancy check CRC of control information for scheduling the response information is scrambled based on the RA-RNTI, or the response information is scrambled based on the RA-RNTI.
A communication device, characterized in that the communication device comprises at least one processor and at least one memory, the at least one memory is used to store computer programs or instructions, and the at least one processor is used to execute the computer program or instructions in the memory, so that the method described in any one of claims 1 to 6 is executed, or the method described in any one of claims 7 to 12 is executed.
A computer-readable storage medium, characterized in that computer instructions are stored in the computer-readable storage medium, and when the computer instructions are executed on a computer, the method as described in any one of claims 1 to 6 is executed, and the method as described in any one of claims 7 to 12 is executed.
A computer program product, characterized in that the computer program product includes computer program code, and when the computer program code is run on a computer, the method as claimed in any one of claims 1 to 6 is executed, and the method as claimed in any one of claims 7 to 12 is executed.