Communication method and apparatus, program product, and medium

Abstract

Provided in the embodiments of the present application are a communication method and apparatus, a program product, and a medium. The method comprises: a terminal device receiving an LP-WUS; on the basis of carrier information determined according to the LP-WUS, acquiring wake-up information of n carriers among N carriers corresponding to the terminal device, the wake-up information being used for indicating whether to activate the n carriers, wherein N and n are positive integers, N ≥ 2, and 1 ≤ n ≤ N. It can be known that when the terminal device supports multiple carriers, the terminal device can determine carrier information from the LP-WUS received, and acquire wake-up information of the carriers on the basis of the carrier information. Thus, a corresponding number of carriers can be activated, and the corresponding carriers can be activated on the basis of the LP-WUS, while no additional new signals need to be configured, thereby facilitating the activation of the corresponding carriers when the terminal device supports multiple carriers. Additionally, the problem of the terminal device not being able to activate carriers when the terminal device supports multiple carriers and requires LP-WUS receptions is solved.

Description

A communication method, apparatus, program product, and medium

[0001] This application claims priority to the Chinese Patent Application No. 202411366622.6, filed on September 27, 2024, and entitled "A communication method, apparatus, program product, and medium", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of communication, and in particular to a communication method, apparatus, program product, and medium. BACKGROUND

[0003] Based on a carrier aggregation (CA) technology or a dual connectivity (DC) technology, a terminal device can simultaneously use multiple carriers for data transmission. The CA aggregates multiple carriers together to achieve a larger transmission bandwidth. The DC allows the terminal device to simultaneously connect to two different network devices.

[0004] Currently, in a scenario where a terminal device supports multiple carriers such as CA and / or DC, the terminal device needs to activate the carriers to communicate with a network device. SUMMARY

[0005] Embodiments of the present application provide a communication method, apparatus, program product, and medium, aiming to activate carriers in a scenario where a terminal device supports multiple carriers.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] In a first aspect, the present application provides a communication method. The method can be executed by a terminal device. In the absence of special description, the "terminal device" of the embodiments of the present application can refer to the terminal device itself, a component (for example, a processor, a chip, or a chip system) in the terminal device, or a logic module or software capable of realizing all or part of the functions of the terminal device. The method comprises: receiving, by the terminal device, a low power wake up signal (LP-WUS), and obtaining, by the terminal device, wake up information of n carriers in N carriers corresponding to the terminal device based on carrier information determined according to the LP-WUS. The wake up information is used to indicate whether to activate the n carriers, and N and n are positive integers, N≥2, and 1≤n≤N.

[0008] In the method provided by the embodiments of the present application, in the case that the terminal device corresponds to at least two carriers, that is, the terminal device supports multiple carriers such as CA and / or DC, the network device sets the LP-WUS correspondingly, so that the terminal device can determine the carrier information from the received LP-WUS, and obtain the wake-up information of the carrier based on the carrier information, thereby activating a corresponding number of carriers, and realizing the corresponding activation of the carriers based on the LP-WUS, without the need of setting a new signal, which facilitates the corresponding activation of the carriers in the case that the terminal device supports multiple carriers, and solves the problem that the terminal device cannot obtain the carrier information and thus cannot activate the carriers in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS, and realizes the activation of the carriers in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0009] In combination with the first aspect, in a possible implementation of the first aspect, the carrier information is carried by a first overlaid sequence modulated in the LP-WUS. In this way, the carrier information is carried by the existing overlaid sequence, and the terminal device can determine the corresponding carrier information according to the detection of the overlaid sequence, without making great changes to the LP-WUS, which facilitates the transmission of the corresponding carrier information to the terminal device, and realizes the activation of the carriers in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0010] In combination with the first aspect, in a possible implementation of the first aspect, the carrier information includes at least one carrier sub-information, the carrier sub-information is used to indicate the activation of m carriers in the N carriers corresponding to the terminal device, one carrier sub-information is carried by a group of first overlaid sequences, the group of first overlaid sequences includes at least one first overlaid sequence, m is a positive integer, and 1≤m≤n. In this way, the overlaid sequence can be flexibly set to carry the corresponding carrier sub-information, so as to flexibly realize the activation of the carriers in the case that the terminal device supports multiple carriers such as CA and / or DC and needs to receive the LP-WUS.

[0011] In combination with the first aspect, in a possible implementation of the first aspect, the carrier information and the information of the LP-WUS are respectively carried by the first overlaid sequence; or, the information of the LP-WUS includes the carrier information, and the information of the LP-WUS is carried by the first overlaid sequence. In this way, the carrier information and the information of the LP-WUS can be carried by the overlaid sequence, or the information of the LP-WUS including the carrier information can be carried by the overlaid sequence, so as to facilitate the transmission of the carrier information to the terminal device, and further realize the activation of the carriers in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0012] In conjunction with the first aspect, in one possible implementation of the first aspect, the LP-WUS information includes first bit information used to indicate waking up a first subgroup, the first subgroup including at least a terminal device; carrier information is carried through a first overlaid sequence at a high-level position corresponding to the first bit information. This associates the high-level position corresponding to the bit information used to wake up the terminal device with the first overlaid sequence used to transmit the carrier information of the terminal device, ensuring that the first overlaid sequence is at a specific high-level position, thus facilitating the terminal device to obtain its corresponding carrier information.

[0013] In conjunction with the first aspect, in one possible implementation of the first aspect, the carrier information corresponds to bit k1, and the LP-WUS information corresponds to bit k2. The carrier information is transmitted through 2... k1 The first overlaid sequence carries LP-WUS information via 2 k2 The first overlaid sequence is carried. Thus, a mapping is set between k1 bits and the overlaid sequence, and between k2 bits and the overlaid sequence, respectively, to carry carrier information and LP-WUS information. This enables carrier activation when the terminal device supports multiple carriers and needs to receive LP-WUS.

[0014] In conjunction with the first aspect, in one possible implementation, the carrier information corresponds to bit k1, the LP-WUS information corresponds to bit k2, and the carrier information is transmitted via b1×2. a1 The first overlaid sequence carries LP-WUS information via b2×2 a2 The first overlaid sequence carries k1 / a1 = b1, k2 / a2 = b2, and a1, a2, b1, and b2 are positive integers. This allows for a reduction in the number of first overlaid sequences when the number of bits corresponding to the carrier information is large, and / or the number of bits corresponding to the LP-WUS information is large.

[0015] In conjunction with the first aspect, in one possible implementation of the first aspect, the LP-WUS information includes carrier information, the LP-WUS information corresponds to k3+k4 bits, the carrier information corresponds to k3 bits, and the LP-WUS information is transmitted through 2... k3+k4 The first overlaid sequence is carried. Based on this, complete LP-WUS information is formed by combining carrier information, and k3+k4 bits are mapped to the corresponding overlaid sequence to carry the carrier information. This enables carrier activation when the terminal device supports multiple carriers and needs to receive LP-WUS.

[0016] With reference to the first aspect, in a possible implementation of the first aspect, the information of the LP-WUS comprises carrier information, the information of the LP-WUS corresponds to k3+k4 bits, the carrier information corresponds to k3 bits, and the information of the LP-WUS is carried by b3x2 a3 overlaid sequences, where (k3+k4) / a3=b3, a3 and b3 are positive integers. In this way, in the case where the number of bits corresponding to the information of the LP-WUS is large, the number of the first overlaid sequences can be reduced.

[0017] With reference to the first aspect, in a possible implementation of the first aspect, the first overlaid sequence is obtained by cyclically shifting and / or offsetting the second overlaid sequence, and the shift amount of the cyclic shift and / or the offset amount of the offset is determined by the carrier information. In this way, the carrier information is carried by cyclically shifting and / or offsetting the overlaid sequence, so that the terminal device can perform corresponding demodulation on the first overlaid sequence to obtain the corresponding shift amount and / or offset amount, thereby obtaining the corresponding carrier information, thereby enabling the activation of the carrier in the case where the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0018] With reference to the first aspect, in a possible implementation of the first aspect, the carrier information is indicated by a high level position where the first overlaid sequence is located. In this way, different high level positions can correspond to different carriers, and the terminal device determines the corresponding carrier information by detecting whether the first overlaid sequence is detected at different high level positions, thereby enabling the activation of the carrier in the case where the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0019] With reference to the first aspect, in a possible implementation of the first aspect, the LP-WUS carries first scrambling information, and the first scrambling information is obtained by scrambling the information of the LP-WUS by using the carrier information. In this way, the carrier information is carried by scrambling the information of the LP-WUS, so that the terminal device can perform corresponding descrambling on the first scrambling information to obtain the corresponding carrier information, thereby enabling the activation of the carrier in the case where the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0020] With reference to the first aspect, in a possible implementation form of the first aspect, the LP-WUS carries second scrambling information, the second scrambling information being obtained by adding a second Cyclic Redundancy Check (CRC) code to information of the LP-WUS, the second CRC code being obtained by scrambling a first CRC code by using the carrier information. In this way, the carrier information is carried by scrambling the CRC code, so that the terminal device can perform corresponding descrambling on the second scrambling information to obtain the corresponding carrier information, thereby enabling the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0021] With reference to the first aspect, in a possible implementation form of the first aspect, the carrier information is carried by a preamble sequence in the LP-WUS. In this way, the carrier information is carried by the existing preamble sequence, without the need to make great changes to the LP-WUS, facilitating the transmission of the corresponding carrier information to the terminal device, and enabling the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0022] With reference to the first aspect, in a possible implementation form of the first aspect, the carrier information is carried by a third overlaid sequence modulated in the preamble sequence. In this way, the terminal device can obtain the corresponding carrier information according to the detected overlaid sequence modulated in the preamble sequence, thereby enabling the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0023] With reference to the first aspect, in a possible implementation form of the first aspect, the carrier information is carried by the time domain resource information or the frequency domain resource information of the LP-WUS. In this way, the terminal device can obtain the corresponding carrier information according to the time domain resource information or the frequency domain resource information, thereby enabling the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0024] With reference to the first aspect, in a possible implementation form of the first aspect, the time domain resource information is time domain offset information, the time domain offset information being an offset between a sending position of the LP-WUS and a monitoring position of a Physical Downlink Control Channel (PDCCH). In this way, the terminal device can obtain the corresponding carrier information according to the time domain offset information, thereby enabling the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0025] In a second aspect, the embodiments of the present application provide a communication method, which can be executed by a network device. The "network device" in the embodiments of the present application can refer to the network device itself, a component (for example, a processor, a chip, or a chip system) in the network device, or a logic module or software capable of realizing all or part of the functions of the network device. The method comprises: generating, by the network device, an LP-WUS, and transmitting the LP-WUS. The LP-WUS is used to determine carrier information, and the carrier information is used to indicate n carriers in N carriers of a terminal device, where N and n are positive integers, N≥2, and 1≤n≤N.

[0026] In the method provided by the embodiments of the present application, in the scenario where the terminal device corresponds to at least two carriers, that is, the terminal device supports CA and / or DC, the network device sets the LP-WUS correspondingly, so that the LP-WUS can be used to determine the carrier information, the terminal device can determine the carrier information from the received LP-WUS, and activates a corresponding number of carriers based on the carrier information. In this way, the corresponding carriers are activated based on the LP-WUS without the need to set a new signal, which facilitates the activation of the corresponding carriers in the case where the terminal device supports multiple carriers, and solves the problem that the terminal device cannot obtain the carrier information and thus cannot activate the carriers in the case where the terminal device supports multiple carriers and needs to receive the LP-WUS, thereby enabling the activation of the carriers in the case where the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0027] In combination with the second aspect, in a possible implementation of the second aspect, the carrier information is carried by a first overlaid sequence modulated in the LP-WUS. In this way, the carrier information is carried by the existing overlaid sequence, and the network device does not need to make great changes to the LP-WUS, which facilitates the transmission of the corresponding carrier information to the terminal device and enables the activation of the carriers in the case where the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0028] In combination with the second aspect, in a possible implementation of the second aspect, the generation of the LP-WUS comprises: scrambling information of the LP-WUS based on the carrier information to obtain first scrambled information; and generating the LP-WUS based on the first scrambled information. In this way, the carrier information is carried by scrambling the information of the LP-WUS, so that the terminal device can perform corresponding descrambling on the first scrambled information to obtain the corresponding carrier information, thereby enabling the activation of the carriers in the case where the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0029] In a possible implementation of the second aspect, the generating the LP-WUS comprises: scrambling the first CRC code based on the carrier information to obtain a second CRC code; adding the second CRC code to information of the LP-WUS to obtain second scrambled information; and generating the LP-WUS based on the second scrambled information. In this way, the carrier information is carried by scrambling the CRC code, so that the terminal device can perform corresponding descrambling on the second scrambled information to obtain the corresponding carrier information, thereby enabling the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0030] In a possible implementation of the second aspect, the carrier information is carried by a preamble sequence in the LP-WUS. In this way, the carrier information is carried by the existing preamble sequence, and the network device does not need to make great changes to the LP-WUS, thereby facilitating the transmission of the corresponding carrier information to the terminal device, and enabling the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0031] In a possible implementation of the second aspect, the sending the LP-WUS comprises: sending the LP-WUS based on time domain resource information or frequency domain resource information, the time domain resource information or the frequency domain resource information being used to indicate the carrier information. In this way, the terminal device can obtain the corresponding carrier information according to the time domain resource information or the frequency domain resource information, thereby enabling the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0032] In a possible implementation of the third aspect, the communication apparatus can be applied to a terminal device. In the case of no special description, the "terminal device" of the embodiments of the present application can refer to the terminal device itself, a component (for example, a processor, a chip, or a chip system) in the terminal device, or a logic module or software capable of realizing all or part of the terminal device functions. Alternatively, the communication apparatus can be applied to a network device. In the case of no special description, the "network device" of the present application can refer to the network device itself, a component (for example, a processor, a chip, or a chip system) in the network device, or a logic module or software capable of realizing all or part of the network device functions. The communication apparatus is used to execute the communication method in the first aspect or any optional implementation of the first aspect, or execute the communication method in the second aspect or any optional implementation of the second aspect.

[0033] In a fourth aspect, an embodiment of the present application provides a communication apparatus, which can be applied to a terminal device or a circuit, a chip, a chip system, etc. inside the terminal device, or can be applied to a network device or a circuit, a chip, a chip system, etc. inside the network device. The apparatus can include at least one processor configured to invoke computer instructions in a memory to cause the communication apparatus to perform the communication method in the first aspect or any of the possible implementation manners of the first aspect, or perform the communication method in the second aspect or any of the possible implementation manners of the second aspect.

[0034] In combination with the fourth aspect, in a possible implementation manner of the fourth aspect, the communication apparatus can further include a memory.

[0035] In a fifth aspect, an embodiment of the present application provides a computer program product, which includes instructions that, when executed on a computer, cause the computer to perform the communication method in the first aspect or any of the possible implementation manners of the first aspect, or perform the communication method in the second aspect or any of the possible implementation manners of the second aspect.

[0036] In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program that, when executed on a computer, causes the computer to perform the communication method in the first aspect or any of the possible implementation manners of the first aspect, or perform the communication method in the second aspect or any of the possible implementation manners of the second aspect.

[0037] In a seventh aspect, an embodiment of the present application provides a chip system, which includes a processor configured to support a device to implement the functions involved in the above aspects, for example, to send or process the data and / or information involved in the above methods. In a possible design, the chip system further includes a memory configured to save necessary program instructions and data of the device. The chip system can be composed of a chip, or can include a chip and other discrete devices.

[0038] In an eighth aspect, an embodiment of the present application provides a chip, which includes one or more interface circuits and one or more processors. The interface circuit is configured to receive a signal from a memory of an electronic device, and send a signal to the processor. The signal includes computer instructions stored in the memory. When the processor executes the computer instructions, the electronic device performs the communication method in the first aspect or any of the possible implementation manners of the first aspect, or performs the communication method in the second aspect or any of the possible implementation manners of the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0039] FIG. 1 is a schematic diagram of a system architecture of a communication system according to an embodiment of the present application;

[0040] FIG. 2 is a schematic diagram of a low-power wake-up mechanism according to an embodiment of the present application;

[0041] FIG. 3 is a schematic diagram of on-off keying modulation according to an embodiment of the present application;

[0042] FIG. 4 is a schematic diagram of a waveform generation method based on on-off keying according to an embodiment of the present application;

[0043] FIG. 5 is a schematic diagram of another waveform generation method based on on-off keying according to an embodiment of the present application;

[0044] FIG. 6 is a schematic diagram of a communication method according to an embodiment of the present application;

[0045] FIG. 7 is a schematic diagram of another communication method according to an embodiment of the present application;

[0046] FIG. 8 is a schematic diagram of an overlaid sequence carrying carrier information according to an embodiment of the present application;

[0047] FIG. 9 is a schematic diagram of another communication method according to an embodiment of the present application;

[0048] FIG. 10 is a schematic diagram of another communication method according to an embodiment of the present application;

[0049] FIG. 11 is a schematic diagram of another communication method according to an embodiment of the present application;

[0050] FIG. 12 is a schematic diagram of another communication method according to an embodiment of the present application;

[0051] FIG. 13 is a schematic diagram of time-domain resource information indicating carrier information according to an embodiment of the present application;

[0052] FIG. 14 is a schematic diagram of frequency-domain resource indicating carrier information according to an embodiment of the present application;

[0053] FIG. 15 is a schematic diagram of a communication apparatus according to an embodiment of the present application;

[0054] FIG. 16 is a schematic diagram of another communication apparatus according to an embodiment of the present application;

[0055] FIG. 17 is a schematic diagram of another communication apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing the specific embodiments and are not intended to be limiting to the present application. As used in the specification and the appended claims of the present application, the singular forms “a,” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “one or more” as used in the embodiments of the present application refer to one, two, or more than two; “and / or” describes the associated objects in the association relationship, which means that there can be three kinds of relationships; for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character “ / ” generally represents an “or” relationship between the associated objects.

[0057] In the present specification, the reference to “one embodiment” or “some embodiments” etc. means that a particular feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Therefore, the statements “in one embodiment”, “in some embodiments”, “in other some embodiments”, “in further some embodiments” etc. appearing in different places in the present specification are not necessarily all referring to the same embodiment, but mean “one or more but not all embodiments”, unless otherwise specifically emphasized. The terms “include”, “contain”, “have” and their variants mean “including but not limited to”, unless otherwise specifically emphasized.

[0058] The plurality referred to in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the terms “first”, “second” etc. are only used for the purpose of distinguishing the description and cannot be understood as indicating or implying relative importance, nor can it be understood as indicating or implying order.

[0059] The embodiments of the present application are applied to a communication system, which can be a second generation (2G) communication system, a third generation (3G) communication system, can be a long term evolution (LTE) system, can also be a fifth generation (5G) communication system, can also be a hybrid architecture of LTE and 5G, can also be a 5G New Radio (5G NR) system, and a new communication system to be appeared in future communication development, etc.

[0060] The communication system includes a first device and a second device. The first device can be a device for providing network communication function at the network side, also referred to as a network device or a network element in some cases. The network device can be a base station (including a functional unit of the base station or a combination of functional units of the base station) or a core network unit in general. The core network unit can be a functional unit in the core network, including but not limited to an Access and Mobility Management Function (AMF) unit or a Session Management Function (SMF) unit. The second device can be a device accessing the network, which can be a terminal in general. An example of the communication system is shown in FIG. 1, which includes a base station 1 and a terminal 2.

[0061] In embodiments provided in the present application, the base station can be any device with wireless transceiving function, including but not limited to: an evolved Node B (eNB or e-NodeB) in LTE, a gNodeB (gNB) or a transmission receiving point (TRP) in new radio (NR), a base station in subsequent evolution of 3GPP, an access node in a Wi-Fi system, a wireless relay node, a wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. The base station can include one or more co-sited or non-co-sited transmission points (TRPs). The base station can also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The base station can communicate with the terminal, or communicate with the terminal through a relay station. The terminal can communicate with multiple base stations of different technologies, for example, the terminal can communicate with a base station supporting an LTE network, and can also communicate with a base station supporting a 5G network, and can also communicate with a base station supporting an LTE network and a base station supporting a 5G network in dual connectivity.

[0062] In the embodiments provided in the present application, the terminal can be various forms, for example, a mobile phone, a tablet computer, a computer with wireless transceiving function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a vehicle-mounted terminal device, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a wearable terminal device, and the like. The terminal can also be referred to as a terminal device, a user equipment (UE), an access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, a wireless communication device, a UE agent, or a UE apparatus, and the like. The terminal can also be a fixed terminal or a mobile terminal.

[0063] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the related concepts involved in the embodiments of the present application are explained as follows.

[0064] (1) Carrier, a continuous sinusoidal signal, is used to transmit information in a communication system. The carrier itself does not carry information, but can be modulated to carry information.

[0065] (2) Subcarrier, a division of the carrier, is a division of a wideband carrier signal into multiple narrowband signals, each of which can independently carry information.

[0066] (3) Low power wake-up signal (LP-WUS), a wireless signal used to wake up a device, has low power consumption characteristics. Please refer to FIG. 2, which is a schematic diagram of a low power wake-up mechanism provided by an embodiment of the present application. In FIG. 2, on the basis of an existing communication unit, a wake-up receiver unit is introduced to process the LP-WUS, so that the power consumption can be reduced while maintaining a low latency. In FIG. 2, a terminal device includes a main communication unit and a wake-up receiver unit. When there is no service demand, the terminal device closes the main communication unit and only opens the wake-up receiver unit. When a network device needs to communicate with the terminal device, the network device can send an LP-WUS. After successfully detecting the LP-WUS, the wake-up receiver unit of the terminal device triggers the main communication unit to open, establishes a communication connection with the network device, and completes the reception and transmission of services.

[0067] During the discussion of the NR R18 version, various alternative LP-WUS waveforms are proposed, including LP-WUS based on orthogonal frequency division multiplexing (OFDM) modulation, LP-WUS based on frequency-shift keying (FSK) modulation, LP-WUS based on on-off keying (OOK) modulation, etc. The above-mentioned modulated LP-WUS can significantly reduce the reception power consumption of the wake-up receiver unit, so that the reception power consumption of the wake-up receiver unit is significantly lower than that of the main communication unit.

[0068] (4) OFDM modulation is a highly efficient wireless communication technology widely used in modern communication systems. The core idea of OFDM modulation is to divide a wideband channel into many narrowband subcarriers and then transmit data on these subcarriers in parallel.

[0069] OFDM modulation includes the following basic steps:

[0070] ① Frequency domain segmentation: The available frequency band is divided into multiple subcarriers, and the bandwidth of each subcarrier is selected so that they remain orthogonal within a certain transmission time.

[0071] ② Data mapping: Map the data bits to be transmitted to different subcarriers.

[0072] ③ Modulation: Modulate each subcarrier in the frequency domain. The modulation process is to map data symbols to the phase and amplitude of the subcarrier.

[0073] ④Inverse Fast Fourier Transform (IFFT): The modulated subcarriers are converted to time domain by IFFT. This process converts the signal in frequency domain to a waveform in time domain, and due to the characteristics of IFFT, the interference between subcarriers can be reduced.

[0074] ⑤Add Cyclic Prefix (CP): A cyclic prefix is added in front of the time domain signal to obtain an OFDM symbol to combat multipath effects. The length of the CP is usually greater than or equal to the maximum delay spread of the channel.

[0075] ⑥Signal transmission: The OFDM symbol is transmitted through a physical channel.

[0076] ⑦Receiver processing: The receiver first removes the cyclic prefix of the signal, then performs Fast Fourier Transformation (FFT) on the signal, demodulates each subcarrier in the frequency domain, and recovers the transmitted data bits.

[0077] (5) OFDM symbol, the basic transmission unit in OFDM modulation, is obtained by modulating, IFFT and adding CP, etc. to multiple subcarriers.

[0078] (6) Amplitude Shift Keying (ASK) modulation, also known as amplitude keying modulation, is a digital modulation technique that represents digital information by changing the amplitude of a carrier signal. In ASK modulation, the frequency and phase of the carrier remain unchanged, only the amplitude changes according to the data signal.

[0079] (7) OOK modulation is a special case of ASK modulation, also known as binary amplitude shift keying (2ASK). The principle of OOK modulation is to control one amplitude to 0 and the other amplitude to non-zero. Please refer to Figure 3, which is a schematic diagram of on-off keying modulation provided by an embodiment of the present application. Vm(t) in Figure 3 represents the digital signal to be transmitted, A cos(2πfct) is the unmodulated carrier, and VAM(t) is the OOK modulated carrier signal.

[0080] The existing 3GPP provides two methods for generating OOK-based waveforms, which will be described in conjunction with Figures 4 and 5.

[0081] Please refer to FIG. 4, which is a flow diagram of a waveform generation method based on on-off keying provided in an embodiment of the present application. In FIG. 4, a plurality of subcarriers (for example, subcarrier #1 and subcarrier #0 in FIG. 4) of the LP-WUS are modulated, IFFTed, and CP is added to obtain an OFDM symbol. In FIG. 4, the modulation states of all subcarriers of the LP-WUS are controlled by using a single bit in a single OFDM symbol. OOK=1 indicates that all subcarriers of the LP-WUS are modulated, that is, these subcarriers carry data information. OOK=0 indicates that all subcarriers of the LP-WUS do not carry data, and they are set to zero power. From the perspective of base-band, this is equivalent to that these subcarriers are not activated.

[0082] In the waveform generation method based on OOK in FIG. 4, in order to make the LP-WUS frequency spectrum flat when transmitting, an overlaid sequence needs to be modulated to the LP-WUS, that is, the overlaid sequence needs to be modulated. In FIG. 4, the overlaid sequence is modulated to subcarrier #1 and subcarrier #0 in the frequency domain and transmitted.

[0083] Please refer to FIG. 5, which is a flow diagram of another waveform generation method based on on-off keying provided in an embodiment of the present application. In FIG. 5, an M-bit OOK signal is transformed in the time domain. The M-bit OOK signal is converted into an OOK-1 signal composed of N subcarriers by Discrete Fourier Transform (DFT) or Least square. In the signal generation and modification module, the original information bit, for example, 1001, is sampled to generate N' samples, and then the N' samples are subjected to Discrete Fourier Transform (DFT) or Least square. Thereafter, truncation and other modifications can be performed to obtain the LP-WUS composed of N subcarriers. Then, the N subcarriers (for example, subcarrier #1 and subcarrier #0 in FIG. 4) are modulated, IFFTed, and CP is added to obtain an OFDM symbol. It needs to be noted that if truncation and other modifications are not performed, N is the same as N'.

[0084] In the waveform generation method based on OOK in FIG. 5, in order to make the LP-WUS frequency spectrum flat when transmitting, an overlaid sequence needs to be modulated to the LP-WUS, that is, the overlaid sequence needs to be modulated. In FIG. 5, the overlaid sequence can be multiplied by the original information bit in the time domain, or the overlaid sequence can also be multiplied by the sampled signal of the original information bit.

[0085] It can be understood that the above-mentioned FIG. 4 and FIG. 5 are only illustrative, and in specific implementation, the OOK-based waveform generation method shown in FIG. 4 and FIG. 5 is not limited. FIG. 4 and FIG. 5 are used to illustrate the overlaid sequence, that is, the overlaid sequence is a sequence modulated to make the LP-WUS time-frequency spectrum flat.

[0086] (8) The preamble sequence is a sequence used for synchronization correction between the terminal device and the network device.

[0087] (9) The 5G spectrum is divided into two regions, Frequency Range 1 (FR1) and Frequency Range 2 (FR2). FR1 includes a frequency band between 450MHz and 6GHz, also known as Sub6G (below 6GHz). FR2 includes a frequency band between 24GHz and 52GHz, and the electromagnetic waves in this frequency band are mostly millimeter level, so it is also called millimeter wave.

[0088] Sub3G generally refers to the part below 3GHz in FR1 in 5G.

[0089] 3G~6G generally refers to the part between 3GHz and 6GHz in FR1 in 5G

[0090] (7) Discontinuous Reception (DRX) is a power saving mechanism used to reduce the power consumption of the terminal device when there is no data transmission. DRX allows the terminal device to periodically turn off the receiver and only wake up to receive possible downlink control channel signals during a specific time period.

[0091] In 3GPP Release 16, support for a second DRX group is introduced, which means that the network can configure two DRX groups with independent DRX parameters. The two groups are called DRX-GROUP1 (default DRX group) and DRX-GROUP2 (secondary DRX group), respectively. DRX-GROUP1 can correspond to FR1, and DRX-GROUP2 can correspond to FR2.

[0092] (8) Scrambling is a processing method for digital signals. The original signal can be multiplied by a scrambling code, or the original signal can be XORed with a scrambling code, or the original signal can be operated with a scrambling code in other ways to obtain a new signal. Compared with the original signal, the new signal is scattered in time and frequency. Therefore, in a broad sense, scrambling is also a modulation technique. Scrambling also has an inverse operation, which is descrambling.

[0093] (9) CRC, is a kind of data transmission error detection technique commonly used in data communication field. CRC code is calculated by a certain algorithm at the sending end, and the obtained CRC code is attached behind the data frame, and sent to the receiving end. The receiving end verifies the received data and check code according to the same algorithm to determine whether the received data is correct and complete.

[0094] At present, in the scenario that the terminal device supports CA and / or DC and the like, the terminal device needs to activate the carrier to communicate with the network device. However, in the scenario that the terminal device supports multiple carriers and needs to receive the LP-WUS, the terminal device cannot receive the corresponding carrier information, so as to fail to activate the corresponding carrier and fail to realize the communication with the network device.

[0095] Therefore, the embodiment of the present application provides a communication method, device, program product and medium, which sets the LP-WUS correspondingly, so that the terminal device can determine the carrier information from the received LP-WUS, and obtain the wake-up information of the carrier based on the carrier information, so as to activate a corresponding number of carriers, realize the corresponding activation of the carrier based on the LP-WUS, without the need of setting a new signal, which is convenient for realizing the corresponding activation of the carrier in the scenario that the terminal device supports multiple carriers, and solves the problem that the terminal device cannot obtain the carrier information in the scenario that the terminal device supports multiple carriers and needs to receive the LP-WUS, so as to fail to activate the carrier, and realizes the activation of the carrier in the scenario that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0096] Specifically, please refer to FIG. 6, which is a flowchart of a communication method provided by the embodiment of the present application. The communication method can be executed by a communication system, which can include a first device and a second device. The embodiment of the present application takes the first device as the network device and the second device as the terminal device as an example for illustration. The method can be executed by the terminal device and the network device. In the case of no special description, the "terminal device" of the embodiment of the present application can refer to the terminal device itself, a component (for example, a processor, a chip, or a chip system) in the terminal device, or a logic module or software capable of realizing all or part of the terminal device function. The "network device" of the embodiment of the present application can refer to the network device itself, a component (for example, a processor, a chip, or a chip system) in the network device, or a logic module or software capable of realizing all or part of the network device function. The communication method provided by the embodiment of the present application can include the following steps:

[0097] S601, the network device generates the LP-WUS.

[0098] The network device in the embodiments of the present application can determine corresponding carrier information according to the corresponding requirements, and then perform corresponding setting on the LP-WUS based on the carrier information, so that the LP-WUS can be used to determine the carrier information. The carrier information is used to indicate n carriers in N carriers corresponding to the terminal device, N and n are positive integers, N≥2, and 1≤n≤N.

[0099] It should be noted that N≥2 indicates that the terminal device can correspond to at least two carriers, that is, the terminal device can support multi-carrier technologies such as CA and / or DC.

[0100] S602, the network device sends the LP-WUS.

[0101] S603, the terminal device receives the LP-WUS.

[0102] S604, the terminal device obtains the wake-up information of n carriers in N carriers corresponding to the terminal device based on the carrier information determined according to the LP-WUS.

[0103] The carrier information can be used to indicate n carriers in N carriers corresponding to the terminal device, and the wake-up information is used to indicate whether the n carriers are activated. In this way, the terminal device can determine that the n carriers can be activated based on the carrier information, and then obtain the wake-up information corresponding to the n carriers to activate the carriers.

[0104] In the embodiments of the present application, one of the n carriers can correspond to one wake-up information, or at least two of the n carriers can correspond to one wake-up information.

[0105] For example, the n carriers include carrier 1, carrier 2, carrier 3 and carrier 4, the carrier information is to activate carrier 1, carrier 2 and carrier 3, the terminal device obtains wake-up information 1 and wake-up information 2, the wake-up information 1 is used to indicate the activation of carrier 1, and the wake-up information 2 is used to indicate the activation of carrier 2 and carrier 3. It can be understood that the above is only an exemplary description and should not be understood as a limitation on the embodiments of the present application.

[0106] After receiving the LP-WUS, the terminal device in the embodiments of the present application can determine the corresponding carrier information according to the LP-WUS. The corresponding carrier information can be determined according to the overlaid sequence modulated in the LP-WUS, the preamble sequence in the LP-WUS, the corresponding scrambling information carried in the LP-WUS, and the corresponding resource information used to send the LP-WUS. The network device and the terminal device can predefine the corresponding relationship between different carrier determination information and carrier information, or the network device can configure the corresponding relationship between different carrier determination information and carrier information, so that the terminal device can determine the carrier information in combination with the corresponding relationship after obtaining the carrier determination information.

[0107] The network device in the embodiments of the present application can configure the corresponding relationship through a system message, Radio Resource Control (RRC) signaling, Media access control Element (MAC CE) information, or Downlink Control Information (DCI), and the like.

[0108] It can be seen that in the embodiments of the present application, in the case that the terminal device corresponds to at least two carriers, i.e., the terminal device supports CA and / or DC and the like, the network device will make corresponding settings on the LP-WUS, so that the terminal device can determine the carrier information from the received LP-WUS, and obtain the wake-up information of the carrier based on the carrier information, so as to activate a corresponding number of carriers, realize corresponding activation of the carrier based on the LP-WUS, without the need to additionally set a new signal, facilitate the implementation of corresponding activation of the carrier in the case that the terminal device supports multiple carriers, and solve the problem that in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS, the terminal device cannot obtain the carrier information, so as to activate the carrier. In the case that the terminal device supports multiple carriers and needs to receive the LP-WUS, the activation of the carrier can be realized.

[0109] Please refer to FIG. 7, which is a flowchart of another communication method provided by the embodiments of the present application. FIG. 7 provides a more detailed description of the communication method on the basis of the communication method provided by FIG. 6. The communication method of FIG. 7 can be executed by a communication system, which can include a network device and a terminal device. The definitions of the network device and the terminal device are the same as those in FIG. 6, and will not be repeated here. The communication method provided by the embodiments of the present application can include the following steps:

[0110] S701, the terminal device sends carrier grouping information.

[0111] The carrier grouping information is used to indicate how to divide and classify N carriers corresponding to the terminal device, and N is a positive integer and N≥2. For example, the terminal device corresponds to carrier 1, carrier 2, carrier 3, and carrier 4, and the carrier grouping information is used to indicate that carrier 1 and carrier 2 are divided into carrier group 1, and carrier 3 and carrier 4 are divided into carrier group 2, so that carrier 1 and carrier 2 can be activated at the same time, and carrier 3 and carrier 4 can be activated at the same time; or carrier 1, carrier 2, carrier 3, and carrier 4 are each a carrier group, and carrier 1, carrier 2, carrier 3, and carrier 4 can be activated independently, and the like. It can be understood that the above is only an exemplary description, and should not be understood as a limitation on the embodiments of the present application.

[0112] In a possible implementation, the terminal device in the embodiment of the present application can divide and classify the N carriers according to the frequency band information to obtain carrier grouping information. For example, the carriers belonging to SUB3G are divided and classified into a group, the carriers belonging to 3G-6G are divided and classified into a group, and the carriers belonging to FR2 are divided and classified into a group; or the carriers belonging to FR1 are divided and classified into a group and the carriers belonging to FR2 are divided and classified into a group, and so on. It should be noted that the frequency bands can also be divided according to actual needs, and then the N carriers corresponding to the terminal device are grouped based on the divided frequency band information.

[0113] For example, carrier 1 and carrier 2 belong to SUB3G, and the terminal device divides and classifies carrier 1 and carrier 2 into a group, and carrier 3 and carrier 4 belong to 3G-6G, and the terminal device divides and classifies carrier 3 and carrier 4 into a group. It can be understood that the above is only an example and should not be construed as a limitation on the embodiments of the present application.

[0114] In a possible implementation, the terminal device in the embodiment of the present application can divide and classify the N carriers according to DRX-GROUP1 and DRX-GROUP2, for example, one group of carriers corresponds to DRX-GROUP1 and one group of carriers corresponds to DRX-GROUP2, to obtain carrier grouping information.

[0115] In a possible implementation, in a DC scenario, the terminal device in the embodiment of the present application can divide and classify the N carriers according to the primary link and the secondary link, for example, the carriers corresponding to the primary link are divided into a group and the carriers corresponding to the secondary link are divided into a group, to obtain carrier grouping information.

[0116] S702, the network device receives the carrier grouping information.

[0117] After the network device in the embodiment of the present application receives the carrier grouping information, it can know how to divide and classify the N carriers corresponding to the terminal device.

[0118] S703, the network device determines the carrier information based on the carrier grouping information.

[0119] The carrier information is used to indicate that n carriers in the N carriers corresponding to the terminal device are activated, N and n are positive integers, N≥2, and 1≤n≤N.

[0120] In a possible implementation, the embodiment of the present application can determine the state information of each carrier group based on the carrier grouping information, and then determine the carrier information based on the state information. The state information is any one of the following: activating the carriers in the carrier group and not activating the carriers in the carrier group.

[0121] In a possible implementation, S701 and S702 can not be performed in the embodiment of the present application, and the network device can independently divide and classify the N carriers corresponding to the terminal device, determine the carrier grouping information, and then determine the carrier information based on the carrier grouping information. It should be noted that in this implementation, the network device needs to send the carrier grouping information to the terminal device, for example, sending the carrier grouping information to the terminal device through system message, RRC signaling, MAC CE information, or DCI. It can be understood that in this implementation, the method for the network device to determine the carrier grouping information is similar to the method for the terminal device to determine the carrier grouping information in S701, and therefore will not be described again.

[0122] In a possible implementation, the network device can refer to the carrier grouping information sent by the terminal device, divide and classify the N carriers corresponding to the terminal device, and obtain the final carrier grouping information. It should be noted that in this implementation, the network device needs to send the final carrier grouping information to the terminal device, for example, sending the final carrier grouping information to the terminal device through system message, RRC signaling, MAC CE information, or DCI. It can be understood that in this implementation, the method for the network device to determine the final carrier grouping information is similar to the method for the terminal device to determine the carrier grouping information in S701, and therefore will not be described again.

[0123] S704, the network device modulates a first overlaid sequence based on the carrier information to generate an LP-WUS.

[0124] It should be noted that the first overlaid sequence is an overlaid sequence modulated in the LP-WUS, and the first overlaid sequence is defined to distinguish from the overlaid sequence modulated in the preamble sequence.

[0125] In a possible implementation, after S704 is performed, the carrier information can be carried through the first overlaid sequence. In this way, the carrier information is carried through the existing overlaid sequence, and the network device does not need to make great changes to the LP-WUS, which facilitates the transmission of the corresponding carrier information to the terminal device.

[0126] In a possible implementation, the carrier information includes at least one carrier sub-information, the carrier sub-information is used to indicate that m carriers in the N carriers corresponding to the terminal device are activated, after S704 is executed, one carrier sub-information can be carried by a first overlaid sequence group, the first overlaid sequence group includes at least one first overlaid sequence, m is a positive integer, and 1≤m≤n. In this way, the corresponding carrier sub-information carried by the overlaid sequence can be flexibly set, so that the activation of the carrier can be flexibly implemented in the case that the terminal device supports multiple carriers such as CA and / or DC and needs to receive the LP-WUS.

[0127] In a possible implementation, the carrier sub-information is used to indicate that a carrier group is activated, and the carrier group includes m carriers in the N carriers.

[0128] For example, the terminal device corresponds to a carrier 1, a carrier 2, a carrier 3, and a carrier 4, the carrier 1 corresponds to a first overlaid sequence 1, the first overlaid sequence 1 corresponds to 00; the carrier 2 corresponds to a first overlaid sequence 2, the first overlaid sequence 2 corresponds to 01; the carrier 3 corresponds to a first overlaid sequence 3, the first overlaid sequence 3 corresponds to 10; and the carrier 4 corresponds to a first overlaid sequence 4, the first overlaid sequence 4 corresponds to 11. It is assumed that the carrier information includes 00 and 11, 00 is used to indicate that the carrier 1 is activated, 11 is used to indicate that the carrier 4 is activated, 00 is carried by the first overlaid sequence 1, and 11 is carried by the first overlaid sequence 4. Then the terminal device can detect the first overlaid sequence 1 and the first overlaid sequence 4, and cannot detect the first overlaid sequence 2 and the first overlaid sequence 3, so the terminal device can determine that the carrier 1 and the carrier 4 can be activated, and the carrier 2 and the carrier 3 cannot be activated. It can be understood that the above is only an exemplary description, and should not be understood as a limitation on the embodiments of the application.

[0129] For example, the terminal device corresponds to carrier 1, carrier 2, and carrier 3, carrier 1 corresponds to the first overlaid sequence 1, the first overlaid sequence 1 corresponds to 000; carrier 2 corresponds to the first overlaid sequence 2, the first overlaid sequence 2 corresponds to 001; carrier 3 corresponds to the first overlaid sequence 3, the first overlaid sequence 3 corresponds to 010; carrier 1 and carrier 2 correspond to the first overlaid sequence 4 together, the first overlaid sequence 4 corresponds to 011; carrier 1 and carrier 3 correspond to the first overlaid sequence 5 together, the first overlaid sequence 5 corresponds to 100; carrier 2 and carrier 3 correspond to the first overlaid sequence 6 together, the first overlaid sequence 6 corresponds to 101; carrier 1, carrier 2, and carrier 3 correspond to the first overlaid sequence 7 together, the first overlaid sequence 7 corresponds to 110. In the example, if multiple carriers are activated, such as 2 carriers or 3 carriers, only one overlaid sequence can be sent. It can be understood that the above is only an example and should not be construed as a limitation on the embodiments of the present application.

[0130] For example, the terminal device corresponds to carrier 1, carrier 2, carrier 3, and carrier 4, carrier 1 and carrier 2 are a group of carriers, corresponding to the first overlaid sequence 1, the first overlaid sequence 1 corresponds to 00; carrier 3 and carrier 4 are a group of carriers, corresponding to the first overlaid sequence 2, the first overlaid sequence 2 corresponds to 01; carrier 1, carrier 2, carrier 3, and carrier 4 are a group of carriers, corresponding to the first overlaid sequence 3, the first overlaid sequence 3 corresponds to 10. Assuming that the carrier information includes 10, 10 is used to indicate that all carriers are activated, 10 is carried by the first overlaid sequence 3, and then the terminal device can detect the first overlaid sequence 3, and cannot detect the first overlaid sequence 1 and the first overlaid sequence 2, so the terminal device can determine that all carriers can be activated. Assuming that the carrier information includes 01, 01 is used to indicate that carrier 3 and carrier 4 are activated, 01 is carried by the first overlaid sequence 2, and then the terminal device can detect the first overlaid sequence 2, and cannot detect the first overlaid sequence 1 and the first overlaid sequence 3, so the terminal device can determine that carrier 3 and carrier 4 can be activated, and carrier 1 and carrier 2 cannot be activated. It can be understood that the above is only an example and should not be construed as a limitation on the embodiments of the present application.

[0131] For example, the terminal device corresponds to carrier 1, carrier 2, carrier 3 and carrier 4. Carrier 1, carrier 2 and carrier 3 correspond to a first overlaid sequence group including first overlaid sequence 1 and first overlaid sequence 2, first overlaid sequence 1 corresponds to 00, and first overlaid sequence 2 corresponds to 01; carrier 4 corresponds to a first overlaid sequence group including first overlaid sequence 3 and first overlaid sequence 4, first overlaid sequence 3 corresponds to 10, and first overlaid sequence 4 corresponds to 11. It is assumed that the carrier information includes 10 and 11, and 10 and 11 are used to indicate that carrier 4 is activated, 10 is carried by first overlaid sequence 3, and 11 is carried by first overlaid sequence 4. Then the terminal device can detect first overlaid sequence 3 and first overlaid sequence 4, and cannot detect first overlaid sequence 1 and first overlaid sequence 2, so the terminal device can determine that carrier 4 can be activated, and carrier 1, carrier 2 and carrier 3 cannot be activated. It can be understood that the above is only an example and should not be understood as a limitation on the embodiments of the present application.

[0132] In a possible implementation, after S704, the carrier information and the information of the LP-WUS can be carried by the first overlaid sequence respectively; or, the information of the LP-WUS includes the carrier information, and the information of the LP-WUS is carried by the first overlaid sequence. In this way, the carrier information and the information of the LP-WUS can be carried by the overlaid sequence, or the information of the LP-WUS including the carrier information can be carried by the overlaid sequence, so as to facilitate the transmission of the carrier information to the terminal device, and then the activation of the carrier can be realized in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0133] In the case that the information of the LP-WUS does not include the carrier information, the carrier information and the information of the LP-WUS can be carried by multiple first overlaid sequences in the same high level position respectively, or the carrier information and the information of the LP-WUS can be carried by first overlaid sequences in different high level positions respectively. It should be noted that the high level position is the position of ON in OOK modulation.

[0134] The information of the LP-WUS in the embodiments of the present application can include information for indicating to wake up at least one terminal device and other information, or the information of the LP-WUS can include information for indicating to wake up at least one sub-group and other information. Wherein, one sub-group includes at least one terminal device.

[0135] It should be noted that the LP-WUS is capable of determining the carrier information corresponding to all the terminal devices that are woken up, and the terminal devices that are woken up determine the carrier information corresponding to themselves according to the LP-WUS. For example, the information of the LP-WUS includes information used for indicating the terminal device 1 and the terminal device 2 that are woken up, and the LP-WUS is capable of determining the carrier information corresponding to the terminal device 1 and the carrier information corresponding to the terminal device 2, the terminal device 1 determines the carrier information corresponding to the terminal device 1 according to the LP-WUS, and the terminal device 2 determines the carrier information corresponding to the terminal device 2 according to the LP-WUS. It can be understood that the above is only an example and should not be construed as a limitation to the embodiments of the present application.

[0136] Please refer to FIG. 8, which is a schematic diagram of an overlaid sequence carrying carrier information provided by an embodiment of the present application. In FIG. 8, the positions corresponding to the four 1s are four high level positions, and the description is based on FIG. 8. For example, the first overlaid sequence at the first two high level positions carries the information of the LP-WUS, and the carrier information is carried by the first overlaid sequence at the last two high level positions; or the carrier information is carried by the first overlaid sequence at the first high level position and the first overlaid sequence at the third high level position, and the information of the LP-WUS is carried by the first overlaid sequence at the second high level position and the overlaid sequence at the fourth high level position. It can be understood that the above is only an example and should not be construed as a limitation to the embodiments of the present application.

[0137] In a possible implementation, the information of the LP-WUS is carried by using a bitmap, in which implementation, the information of the LP-WUS includes first bit information, the first bit information is used for indicating a first sub-group, and the first sub-group includes at least a terminal device; and the carrier information is carried by the first overlaid sequence at the high level position corresponding to the first bit information. It should be noted that the carrier information here refers to the carrier information corresponding to the terminal device. In this way, the high level position corresponding to the bit information used for waking up the terminal device is associated with the first overlaid sequence used for sending the carrier information of the terminal device, so that the first overlaid sequence used for sending the carrier information of the terminal device is at a specific high level position, which facilitates the terminal device to obtain the carrier information corresponding to itself.

[0138] In the embodiments of the present application, Manchester coding and other coding modes can be used to realize the representation of bit information by using level information. Manchester coding is a kind of digital communication line coding mode, which represents "0" or "1" through the high-low conversion of the level. In Manchester coding, there is a transition in the middle of each bit, and the transition in the middle of the bit serves as both a clock signal and a data signal. One kind of Manchester coding represents "1" by low-to-high transition and represents "0" by high-to-low transition. Another kind of Manchester coding represents "0" by low-to-high transition and represents "1" by high-to-low transition. Another kind of Manchester coding is differential Manchester coding, in which the transition in the middle of each bit only provides clock timing, and "0" or "1" is represented by whether there is a transition at the beginning of each bit. A transition represents "0", and no transition represents "1".

[0139] For example, the information of the LP-WUS includes first bit information, and the first bit information "1" is used to indicate to wake up a first sub-group, and the first sub-group at least includes the terminal device 1 and the terminal device 2. The "1" is corresponded to "10", the "10" is represented by one high level and one low level by using Manchester coding, and the terminal device 1 corresponds to a high level position and a low level position. The carrier information corresponding to the terminal device 2 is carried by the first overlaid sequence at the high level position. It can be understood that the above is only an example and should not be understood as a limitation on the embodiments of the present application.

[0140] In a possible implementation, the information of the LP-WUS includes first bit information and second bit information, the first bit information is used to indicate to wake up a first sub-group, and the first sub-group at least includes the terminal device; the second bit information is used to indicate to wake up a second sub-group, and the second sub-group does not include the terminal device; and the carrier information corresponding to the terminal device is carried by the first overlaid sequence at the high level position corresponding to the first bit information. Alternatively, the terminal device can be expressed as a first terminal device, and correspondingly, the second sub-group can include a second terminal device, and the carrier information corresponding to the second terminal device is carried by the first overlaid sequence at the high level position corresponding to the second bit information.

[0141] For example, the information of the LP-WUS includes first bit information and second bit information, the first bit information "1" is used to indicate to wake up a first sub-group, the first sub-group includes the terminal device 1, the second bit information "1" is used to indicate to wake up a second sub-group, the second sub-group includes the terminal device 2 and the terminal device 3, the first bit information is before the second bit information, "11" corresponds to "1010", "1010" is represented by high level 1, low level 1, high level 2 and low level 2 by using Manchester coding, corresponding to high level position 1, low level position 1, high level position 2 and low level position 2, the carrier information corresponding to the terminal device 1 is carried by the first overlaid sequence on the high level position 1, the carrier information corresponding to the terminal device 2 and the carrier information corresponding to the terminal device 3 are carried by the first overlaid sequence on the high level position 2. It can be understood that the above is only an example and should not be understood as a limitation of the embodiments of the present application.

[0142] In a possible implementation, the information of the LP-WUS is carried by using code points, in which the information of the LP-WUS includes a first code point value, the first code point value is used to indicate to wake up a first sub-group, the first sub-group at least includes the terminal device, and the carrier information corresponding to the terminal device is carried by the first overlaid sequence on a code point position corresponding to the first code point value. It should be noted that the carrier information here refers to the carrier information corresponding to the terminal device. In this way, the code point position corresponding to the code point value used to wake up the terminal device is associated with the first overlaid sequence used to send the carrier information of the terminal device, so that the first overlaid sequence used to send the carrier information of the terminal device is in a specific code point position, which facilitates the terminal device to obtain the carrier information corresponding to itself.

[0143] In a possible implementation, the information of the LP-WUS includes a first code point value and a second code point value, the first code point value is used to indicate to wake up a first sub-group, the first sub-group at least includes the terminal device, the second code point value is used to indicate to wake up a second sub-group, the second sub-group does not include the terminal device, and the carrier information corresponding to the terminal device is carried by the first overlaid sequence on a code point position corresponding to the first code point value. Alternatively, the terminal device can be expressed as a first terminal device, and correspondingly, the second sub-group can include a second terminal device, and the carrier information corresponding to the second terminal device is carried by the first overlaid sequence on a high level position corresponding to the second bit information.

[0144] In a possible implementation, the carrier sub-information is carried by a jth overlaid sequence in an ith group of overlaid sequences, the jth overlaid sequence is in a jth high level position, and i and j are positive integers. The jth group of overlaid sequences includes at least one overlaid sequence. In this way, the jth group of overlaid sequences is associated with the jth high level position, facilitating the terminal device to determine the carrier information.

[0145] Please continue to refer to FIG. 8, which is explained based on FIG. 8. For example, the terminal device corresponds to a carrier 1, a carrier 2 and a carrier 3, and groups the three carriers, a carrier group 1 includes the carrier 1 and the carrier 2, and a carrier group 2 includes the carrier 3. A first overlaid sequence 1 and a first overlaid sequence 2 are a first group of first overlaid sequences, and a first overlaid sequence 3 is a second group of first overlaid sequences. The first overlaid sequence 1 corresponds to 00, the first overlaid sequence 2 corresponds to 01, and the first overlaid sequence 2 corresponds to 10. It is assumed that the carrier information includes 10, and then the first overlaid sequence 3 will be detected at the second high level position in FIG. 8. It can be understood that the above is only an example and should not be understood as a limitation on the embodiments of the present application.

[0146] In a possible implementation, the carrier information corresponds to k1 bits, the information of the LP-WUS corresponds to k2 bits, the carrier information is carried by 2 k1 first overlaid sequences, and the information of the LP-WUS is carried by 2 k2 first overlaid sequences. In this way, the k1 bits and the overlaid sequences are respectively set to correspond to the mapping, and the k2 bits and the overlaid sequences are respectively set to correspond to the mapping, to realize the carrying of the carrier information and the information of the LP-WUS, so as to realize the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0147] It should be noted that the positions of the 2 k1 first overlaid sequences and the 2 k2 first overlaid sequences can be arbitrary, that is, at least one of the 2 k1 first overlaid sequences can be in front of or behind at least one of the 2 k2 overlaid sequences.

[0148] For example, the terminal device corresponds to carrier 1, carrier 2, carrier 3 and carrier 4, the carrier information corresponds to 2 bits, such as 00, 01, 10 and 11, carrier 1 corresponds to 00, carrier 2 corresponds to 01, carrier 3 corresponds to 10, and carrier 4 corresponds to 11. The carrier corresponds to the first overlaid sequence one by one, and the carrier information needs to be carried by 4 first overlaid sequences. If one or several of the 4 first overlaid sequences are detected, the corresponding carrier is activated. The information of the LP-WUS corresponds to 3 bits, such as 000, 001, 010, 011, 100, 101, 110 and 111. Different information of the LP-WUS corresponds to different first overlaid sequences, and the information of the LP-WUS needs to be carried by 8 first overlaid sequences. The information of the LP-WUS is determined by detecting one of the 8 first overlaid sequences. It can be understood that the above is only an exemplary description and should not be understood as a limitation on the embodiments of the present application.

[0149] In a possible implementation, the carrier information corresponds to k1 bits, the information of the LP-WUS corresponds to k2 bits, the carrier information is carried by b1×2 a1 first overlaid sequences, and the information of the LP-WUS is carried by b2×2 a2 first overlaid sequences, where k1 / a1=b1, k2 / a2=b2, and a1, a2, b1 and b2 are positive integers. In this way, in the case that the number of bits corresponding to the carrier information is large and / or the number of bits corresponding to the information of the LP-WUS is large, the number of first overlaid sequences can be reduced.

[0150] For example, the carrier information corresponds to 4 bits, such as 0000, 0001, 0010, 0011, 0100, 0101, 0110, 0111, 1000, 1001, 1010, 1011, 1100, 1101, 1110, and 1111. The first two bits of the 4 bits can correspond to 4 first overlaid sequences, for example, the first two bits are 00, corresponding to the first overlaid sequence 1; the first two bits are 01, corresponding to the first overlaid sequence 2; the first two bits are 10, corresponding to the first overlaid sequence 3; and the first two bits are 11, corresponding to the first overlaid sequence 4. The last two bits of the 4 bits can correspond to 4 first overlaid sequences, for example, the last two bits are 00, corresponding to the first overlaid sequence 5; the last two bits are 01, corresponding to the first overlaid sequence 6; the last two bits are 10, corresponding to the first overlaid sequence 7; and the last two bits are 11, corresponding to the first overlaid sequence 8. In this way, the carrier information can be carried by 8 first overlaid sequences, and at least two corresponding first overlaid sequences need to be detected to determine the carrier information. For example, the carrier information is 0000, and the terminal device needs to detect the first overlaid sequence 1 and the first overlaid sequence 5 to determine the carrier information. It can be understood that the above is only an example and should not be construed as limiting the embodiments of the present application.

[0151] It can be understood that other mapping methods can also be used in the embodiments of the present application to realize the corresponding mapping of the carrier information and the first overlaid sequence, and the corresponding mapping of the information of the LP-WUS and the first overlaid sequence, which is not limited in the embodiments of the present application.

[0152] In a possible implementation, the information of the LP-WUS includes carrier information, the information of the LP-WUS corresponds to k3+k4 bits, the carrier information corresponds to k3 bits, and the information of the low-power wake-up signal is carried by 2 k3+k4 In this way, the complete information of the LP-WUS is combined based on the carrier information, k3+k4 bits are set to correspond to the verlaid sequence to realize the carrying of the carrier information, so that the carrier can be activated in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0153] For example, the terminal device corresponds to four carriers, i.e., carrier 1, carrier 2, carrier 3, and carrier 4, the information of the LP-WUS includes carrier information, the carrier information corresponds to 2 bits, the information of the LP-WUS corresponds to 4 bits, the information of the LP-WUS can be, for example, 0001, 0001, 0010, 0011, 0100, 0101, 0110, 0111, 1000, 1001, 1010, 1011, 1100, 1101, 1110, 1111, the carrier information needs to be carried in the information of the LP-WUS through 16 first overlaid sequences, if one or several first overlaid sequences in the 16 first overlaid sequences are detected, it is determined that the corresponding carrier can be activated. It can be understood that the above is only an example and should not be understood as a limitation on the embodiments of the present application.

[0154] In a possible implementation, the information of the LP-WUS includes carrier information, the information of the LP-WUS corresponds to k3+k4 bits, the carrier information corresponds to k3 bits, and the information of the LP-WUS is carried through b3×2 a3 first overlaid sequences, where (k3+k4) / a3=b3, a3 and b3 are positive integers. In this way, in the case that the number of bits corresponding to the information of the LP-WUS is large, the number of first overlaid sequences can be reduced.

[0155] For example, the information of the LP-WUS includes carrier information, the carrier information corresponds to 2 bits, the information of the LP-WUS corresponds to 4 bits, and the information of the LP-WUS can be, for example, 0001, 0001, 0010, 0011, 0100, 0101, 0110, 0111, 1000, 1001, 1010, 1011, 1100, 1101, 1110, 1111, the first two bits in the 4 bits can correspond to 4 first overlaid sequences, the last two bits in the 4 bits can correspond to 4 first overlaid sequences, in this way, the carrier information can be carried in the information of the LP-WUS through 8 first overlaid sequences, and at least two corresponding first overlaid sequences need to be detected to determine the carrier information. It can be understood that the above is only an example and should not be understood as a limitation on the embodiments of the present application.

[0156] It can be understood that other mapping methods can also be used in the embodiments of the present application to realize the corresponding mapping between the information of the LP-WUS and the first overlaid sequence, and the embodiments of the present application do not limit this.

[0157] In the embodiments of the present application, carrier information can be added in the information of the LP-WUS, and the carrier information can be contained in any position in the information of the LP-WUS, so that the terminal device obtains the carrier information from the LP-WUS information. Wherein, the network device and the terminal device can predefine the adding position of the carrier information, or the network device can configure the adding position of the carrier information, and the network device can configure the adding position of the carrier information through system message, RRC signaling, MAC CE information or DCI, etc.

[0158] In a possible implementation, the information of the LP-WUS is carried through a second overlaid sequence, the first overlaid sequence is obtained by cyclically shifting and / or offsetting the second overlaid sequence, and the shift amount of the cyclic shift and / or the offset amount of the offset is determined by the carrier information. In this way, the carrier information is carried by cyclically shifting and / or offsetting the overlaid sequence, so that the terminal device can demodulate the first overlaid sequence accordingly to obtain the corresponding shift amount and / or offset amount, thereby obtaining the corresponding carrier information, so as to activate the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0159] In the embodiments of the present application, the terminal device and the network device can predefine the correspondence between different shift amounts and / or offset amounts and different carrier information, or the network device can configure the correspondence between different shift amounts and / or offset amounts and different carrier information, so as to facilitate the terminal device to determine the carrier information based on the shift amount and / or the offset amount. Wherein, the network device can configure the correspondence through system message, RRC signaling, MAC CE information or DCI, etc.

[0160] For example, the overlaid sequence modulated in the LP-WUS carries the LP-WUS information, the original overlaid sequence is X1, and the sequence X2 is obtained by cyclically shifting based on the carrier information. Then, the terminal device detects the overlaid sequence and demodulates accordingly to obtain the shift amount, and determines the carrier information based on the shift amount. It can be understood that the above is only an exemplary description and should not be understood as a limitation on the embodiments of the present application.

[0161] In a possible implementation, the carrier information can be indicated by the high level position where the first overlaid sequence is located. In this way, different high level positions can correspond to different carriers, and the terminal device determines the corresponding carrier information by detecting whether the first overlaid sequence is detected at different high level positions, so as to activate the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0162] The terminal device and the network device in the embodiments of the present application can predefine the correspondence between different high level positions and different carrier information, or the network device can configure the correspondence between different high level positions and different carrier information, so as to facilitate the terminal device to determine the carrier information based on the high level position. The network device can configure the correspondence by system message, RRC signaling, MAC CE information, DCI, etc.

[0163] Please continue to refer to FIG. 8. For example, the terminal device corresponds to carrier 1, carrier 2, carrier 3 and carrier 4. Assuming that the first overlaid sequence is detected at the first high level position, it is determined that carrier 1 is activated; the first overlaid sequence is detected at the second high level position, it is determined that carrier 2 is activated; the first overlaid sequence is detected at the third high level position, it is determined that carrier 3 is activated; the first overlaid sequence is detected at the fourth high level position, it is determined that carrier 4 is activated. It can be understood that the above is only an example and should not be construed as a limitation of the embodiments of the present application.

[0164] S705, the network device sends the LP-WUS.

[0165] S706, the terminal device receives the LP-WUS.

[0166] S707, the terminal device determines the carrier information based on the first overlaid sequence.

[0167] In the embodiments of the present application, the corresponding carrier information can be determined according to the detected overlaid sequence, or the corresponding carrier information can be determined according to the shift and / or offset demodulated from the detected overlaid sequence, or the corresponding carrier information can be determined according to the high level position of the detected overlaid sequence, etc.

[0168] S708, the terminal device obtains the wake-up information of n carriers of the N carriers corresponding to the terminal device based on the carrier information.

[0169] It can be understood that S708 in the embodiments of the present application is similar to S604 in the above example, and the same parts will not be described here.

[0170] The wake-up information in the embodiments of the present application can correspond to the carrier grouping information. For example, the terminal device corresponds to carriers 1, 2, 3 and 4, the carrier grouping information is used to indicate that the carriers 1 and 2 are divided into a carrier group 1, and the carriers 3 and 4 are divided into a carrier group 2, the terminal device obtains carrier information that the carriers 3 and 4 are activated, and then one wake-up information can be obtained to indicate that the carriers 3 and 4 are activated. Alternatively, the terminal device corresponds to carriers 1, 2, 3 and 4, the carrier grouping information is used to indicate that the carriers 1, 2, 3 and 4 are respectively a carrier group, the terminal device obtains carrier information that the carriers 3 and 4 are activated, and then two wake-up information can be obtained, one wake-up information is used to indicate that the carrier 3 is activated, and the other wake-up information is used to indicate that the carrier 4 is activated. It can be understood that the above is only an exemplary description, and is not understood as a limitation on the embodiments of the present application.

[0171] It can be seen that in the embodiments of the present application, the carrier information can be directly carried through the overlaid sequence, can be indicated through the shift amount and / or offset amount of the overlaid sequence, and can also be indicated through the high level position of the first overlaid sequence. In this way, by making corresponding settings to the existing overlaid sequence, the carrier information is transmitted to the terminal device, without making large changes to the LP-WUS, so that the activation of the carrier can be realized in the scenario where the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0172] Please refer to FIG. 9, which is a flow diagram of another communication method provided by the embodiments of the present application. FIG. 9 provides a more detailed description of the communication method on the basis of the communication method provided by FIG. 6. The communication method of FIG. 9 can be executed by a communication system, which can include a network device and a terminal device. The definitions of the network device and the terminal device are the same as those in FIG. 6, and will not be repeated here. The communication method provided by the embodiments of the present application can include the following steps:

[0173] S901, the terminal device sends carrier grouping information.

[0174] It can be understood that S901 in the embodiments of the present application is the same as S701 in the above embodiments, and therefore will not be repeated here.

[0175] S902, the network device receives the demand carrier grouping information.

[0176] It can be understood that S902 in the embodiments of the present application is the same as S702 in the above embodiments, and therefore will not be repeated here.

[0177] S903, the network device determines carrier information based on the carrier grouping information.

[0178] It can be understood that S903 in the embodiment of the present application is the same as S703 in the above embodiment, and therefore will not be described again.

[0179] S904, the network device scrambles information of the LP-WUS based on the carrier information to obtain first scrambled information.

[0180] S905, the network device generates the LP-WUS based on the first scrambled information.

[0181] The LP-WUS carries the first scrambled information, and the first scrambled information is obtained by scrambling information of the LP-WUS by using the carrier information.

[0182] S906, the network device sends the LP-WUS.

[0183] S907, the terminal device receives the LP-WUS.

[0184] S908, the terminal device descrambles the first scrambled information to obtain the carrier information.

[0185] In a possible implementation, the network device can add a CRC code to the first scrambled information and then generate the LP-WUS. In this case, the first scrambled information and the CRC code need to be verified first to determine whether the first scrambled information is correct and complete, and then the first scrambled information is descrambled to obtain the carrier information in the case that the first scrambled information is correct and complete.

[0186] S909, the terminal device obtains wake-up information of n carriers of N carriers corresponding to the terminal device based on the carrier information.

[0187] It can be understood that S909 in the embodiment of the present application is the same as S708 in the above example, and therefore will not be described again.

[0188] As can be seen, in the embodiment of the present application, the carrier information is carried by scrambling information of the LP-WUS, so that the terminal device can descramble the first scrambled information to obtain the corresponding carrier information, thereby enabling the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0189] Please refer to FIG. 10, which is a flow block diagram of another communication method provided by the present application. FIG. 10 provides a more detailed description of the communication method provided in FIG. 6. The communication method of FIG. 10 can be executed by a communication system, which can include a network device and a terminal device. The definitions of the network device and the terminal device are the same as those in FIG. 6, and will not be described again. The communication method provided by the embodiment of the present application can include the following steps:

[0190] S1001, the terminal device sends carrier grouping information.

[0191] It can be understood that S1001 in the embodiment of the application is the same as S701 in the above embodiment, and therefore will not be described again.

[0192] S1002, the network device receives demand carrier grouping information.

[0193] It can be understood that S1002 in the embodiment of the application is the same as S702 in the above embodiment, and therefore will not be described again.

[0194] S1003, the network device determines carrier information based on the carrier grouping information.

[0195] It can be understood that S1003 in the embodiment of the application is the same as S703 in the above embodiment, and therefore will not be described again.

[0196] S1004, the network device scrambles a first CRC code based on the carrier information to obtain a second CRC code.

[0197] S1005, the network device adds the second CRC code to information of the LP-WUS to obtain second scrambling information.

[0198] S1006, the network device generates the LP-WUS based on the second scrambling information.

[0199] The LP-WUS carries the second scrambling information, the second scrambling information is obtained by adding the second CRC code to the information of the LP-WUS, and the second CRC code is obtained by scrambling the first CRC code using the carrier information.

[0200] S1007, the network device sends the LP-WUS.

[0201] S1008, the terminal device receives the LP-WUS.

[0202] S1009, the terminal device verifies the second scrambling information to obtain the second CRC code.

[0203] S1010, the terminal device descrambles the second CRC code to obtain the carrier information.

[0204] S1011, the terminal device obtains wake-up information of n carriers of N carriers corresponding to the terminal device based on the carrier information.

[0205] It can be understood that S1011 in the embodiment of the application is the same as S708 in the above example, and therefore will not be described again.

[0206] It can be seen that, in the embodiment of the application, the carrier information is carried by scrambling the CRC code, so that the terminal device can perform corresponding descrambling on the second scrambling information to obtain the corresponding carrier information, thereby enabling the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0207] Please refer to FIG. 11, which is a flow block diagram of another communication method provided by the embodiment of the application. FIG. 11 provides a more detailed description of the communication method on the basis of the communication method provided by FIG. 6. The communication method of FIG. 11 can be executed by a communication system, which can include a network device and a terminal device. The definitions of the network device and the terminal device are the same as those in FIG. 6, and will not be repeated here. The communication method provided by the embodiment of the application can include the following steps:

[0208] S1101, the terminal device sends carrier grouping information.

[0209] It can be understood that S1101 in the embodiment of the application is the same as S701 in the above-described embodiment, and therefore will not be repeated here.

[0210] S1102, the network device receives the required carrier grouping information.

[0211] It can be understood that S1102 in the embodiment of the application is the same as S702 in the above-described embodiment, and therefore will not be repeated here.

[0212] S1103, the network device determines carrier information based on the carrier grouping information.

[0213] It can be understood that S1103 in the embodiment of the application is the same as S703 in the above-described embodiment, and therefore will not be repeated here.

[0214] S1104, the network device sets a preamble sequence based on the carrier information to generate an LP-WUS.

[0215] After S1104 is executed in the embodiment of the application, the carrier information is carried by the preamble sequence in the LP-WUS.

[0216] In a possible implementation, different preamble sequences can be sent according to different carrier information, and the terminal device determines the corresponding carrier information based on the preamble sequence. In this implementation, the network device and the terminal device can predefine the correspondence between different preamble sequences and different carrier information, or the network device can configure the correspondence between different preamble sequences and different carrier information, and the network device can configure the correspondence by using a system message, RRC signaling, MAC CE information, DCI, or the like.

[0217] In a possible implementation, the carrier information can be carried by a third overlaid sequence modulated in the preamble sequence. This implementation is similar to the carrier information carried by the first overlaid sequence modulated in the LP-WUS provided in FIG. 7, and thus will not be described again.

[0218] S1105. The network device sends the LP-WUS.

[0219] S1106. The terminal device receives the LP-WUS.

[0220] S1107. The terminal device determines the carrier information based on the preamble sequence.

[0221] In the embodiments of the present application, the terminal device can determine the carrier information based on the preamble sequence and the correspondence between different preamble sequences and different carrier information, or determine the corresponding carrier information based on the third overlaid sequence.

[0222] S1108. The terminal device obtains the wake-up information of n carriers in the N carriers corresponding to the terminal device based on the carrier information.

[0223] It can be understood that S1108 in the embodiments of the present application is the same as S708 in the above examples, and thus will not be described again.

[0224] It can be seen that, in the embodiments of the present application, the carrier information can be carried by the existing preamble sequence, without making great changes to the LP-WUS, so as to facilitate the transmission of the corresponding carrier information to the terminal device, and to realize the activation of the carrier in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0225] Please refer to FIG. 12, which is a flow block diagram of another communication method provided by the embodiments of the present application. FIG. 12 provides a more detailed description of the communication method provided in FIG. 6. The communication method of FIG. 12 can be performed by a communication system, which can include a network device and a terminal device. The definitions of the network device and the terminal device are the same as those in FIG. 6, and will not be repeated here. The communication method provided by the embodiments of the present application can include the following steps:

[0226] S1201. The terminal device sends carrier grouping information.

[0227] It can be understood that S1201 in the embodiments of the present application is the same as S701 in the above embodiments, and therefore will not be repeated here.

[0228] S1202. The network device receives the required carrier grouping information.

[0229] It can be understood that S1202 in the embodiments of the present application is the same as S702 in the above embodiments, and therefore will not be repeated here.

[0230] S1203. The network device determines carrier information based on the carrier grouping information.

[0231] It can be understood that S1203 in the embodiments of the present application is the same as S703 in the above embodiments, and therefore will not be repeated here.

[0232] S1204. The network device determines time domain resource information or frequency domain resource information based on the carrier information.

[0233] The time domain resource information or the frequency domain resource information can be used to indicate the carrier information.

[0234] The time domain resource information in the embodiments of the present application can include time domain offset information, a detection start position of the LP-WUS, and the like. The time domain offset information is the offset between the transmission position of the LP-WUS and the listening position of the PDCCH.

[0235] In one possible implementation, different time domain offset information can correspond to different carrier information. For example, the time domain offset information greater than an offset threshold corresponds to active carrier 1 and carrier 2; the time domain offset information less than or equal to the offset threshold corresponds to active carrier 3, and the like. It can be understood that the above is only an exemplary description and should not be understood as a limitation on the embodiments of the present application.

[0236] In one possible implementation, different detection start positions correspond to different carrier information.

[0237] The frequency domain resource information in the embodiments of the present application can include a frequency domain position, an allocated frequency domain resource, and the like,

[0238] In a possible implementation, different frequency domain positions correspond to different carrier information.

[0239] In a possible implementation, different frequency domain resources correspond to different carrier information.

[0240] S1205, the network device sends the LP-WUS based on the time domain resource information or the frequency domain resource information.

[0241] S1206, the terminal device receives the LP-WUS.

[0242] S1207, the terminal device determines the carrier information based on the time domain resource information or the frequency domain resource information.

[0243] In the embodiments of the present application, the network device and the terminal device can predefine the correspondence relationship between different time domain resource information and different carrier information, or the network device can configure the correspondence relationship between different time domain resource information and different carrier information; the network device and the terminal device can predefine the correspondence relationship between different frequency domain resource information and different carrier information, or the network device can configure the correspondence relationship between different frequency domain resource information and different carrier information. The network device can configure the correspondence relationship through system messages, RRC signaling, MAC CE information, DCI, etc.

[0244] In the embodiments of the present application, the terminal device can determine the carrier information based on the received time domain offset information, or can determine the carrier information based on the starting position of the detected LP-WUS, or can determine the carrier information based on the detected frequency domain resource, etc.

[0245] Please refer to FIG. 13, which is a schematic diagram of time domain resource information indicating carrier information provided by the embodiments of the present application. In FIG. 13, the terminal device corresponds to carrier 1, carrier 2 and carrier 3. In the first case in FIG. 13, the time domain offset information 1 is greater than the offset threshold, corresponding to the activated carrier 1 and carrier 2. In the second case in FIG. 13, the time domain offset information 2 is less than the offset threshold, corresponding to the activated carrier 3. It can be understood that the above is only an exemplary description and should not be understood as a limitation on the embodiments of the present application.

[0246] Please refer to FIG. 14, which is a schematic diagram of frequency domain resource indicating carrier information provided by the embodiments of the present application. In FIG. 14, the terminal device corresponds to carrier 1, carrier 2 and carrier 3. In the first case in FIG. 14, the detected frequency domain resource 1 corresponds to the activated carrier 1 and carrier 2. In the second case in FIG. 14, the detected frequency domain resource 2 corresponds to the activated carrier 3. It can be understood that the above is only an exemplary description and should not be understood as a limitation on the embodiments of the present application.

[0247] S1208, the terminal device acquires the wake-up information of the n carriers in the N carriers corresponding to the terminal device based on the carrier information.

[0248] It can be understood that S1208 in the embodiments of the present application is the same as S708 in the above examples, and therefore will not be described again.

[0249] It can be seen that in the embodiments of the present application, the carrier information can be determined according to the time domain resource information or the frequency domain resource information of the LP-WUS, so that the activation of the carrier can be realized in the case that the terminal device supports multiple carriers and needs to receive the LP-WUS.

[0250] It should be noted that, for each of the above method embodiments, in order to simply describe, it is expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited to the action order described, because according to the present application, certain steps can be performed in other order or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0251] In order to better implement the above scheme of the embodiments of the present application, the related device for implementing the above scheme is also provided below.

[0252] Please refer to FIG. 15, which is a structural schematic diagram of a communication device provided by the embodiments of the present application. The communication device 1500 includes a transceiver unit 1501 and a processing unit 1502.

[0253] The transceiver unit 1501 and the processing unit 1502 are used to enable the communication device 1500 to realize the functions of the terminal device in the above method embodiments, or to enable the communication device 1500 to realize the functions of the network device in the above method embodiments.

[0254] In some possible implementation manners, the communication device provided in the embodiments of the present application further includes a storage unit for storing any data, computer instructions and / or computer programs that can be involved in the embodiments of the present application.

[0255] In some possible implementation manners, the communication apparatus 1500 provided in the embodiments of the present application can be applied to a terminal device. In scenarios not specifically described, the "terminal device" of the present application can refer to the terminal device itself, a component (for example, a processor, a chip, or a chip system) in the terminal device, or a logical module or software capable of realizing all or part of the terminal device functions. Alternatively, the communication apparatus 1500 can be applied to a network device. In scenarios not specifically described, the "network device" of the present application can refer to the network device itself, a component (for example, a processor, a chip, or a chip system) in the network device, or a logical module or software capable of realizing all or part of the network device functions.

[0256] In some possible implementation manners, in the communication apparatus provided in the embodiments of the present application, the transceiver 1501 is configured to receive the LP-WUS.

[0257] The processing unit 1502 is configured to acquire wake-up information of n carriers of N carriers corresponding to the terminal device based on the carrier information determined according to the LP-WUS, the wake-up information being used to indicate whether the n carriers are activated, N and n being positive integers, N≥2, and 1≤n≤N.

[0258] In some possible implementation manners, in the communication apparatus provided in the embodiments of the present application, the carrier information is carried by an overlaid sequence modulated in the LP-WUS.

[0259] In some possible implementation manners, in the communication apparatus provided in the embodiments of the present application, the carrier information includes at least one carrier sub-information, the carrier sub-information being used to indicate that m carriers of the N carriers corresponding to the terminal device are activated, one carrier sub-information being carried by a first overlaid sequence group, the first overlaid sequence group including at least one first overlaid sequence, and m being a positive integer, 1≤m≤n.

[0260] In some possible implementation manners, in the communication apparatus provided in the embodiments of the present application, the carrier information and the information of the LP-WUS are carried by the first overlaid sequence in the high-level position; or, the information of the LP-WUS includes the carrier information, and the information of the LP-WUS is carried by the first overlaid sequence in the high-level position.

[0261] In a possible implementation manner, in the communication apparatus provided in the embodiments of the present application, the information of the LP-WUS includes first bit information, the first bit information being used to indicate to wake up a first sub-group, the first sub-group at least including the terminal device, and the carrier information is carried by the first overlaid sequence in the high-level position corresponding to the first bit information.

[0262] In some possible implementation manners, the carrier information corresponds to k1 bits, the LP-WUS information corresponds to k2 bits, the carrier information is carried by 2 k1 first overlaid sequences, and the LP-WUS information is carried by 2 k2 first overlaid sequences.

[0263] In some possible implementation manners, the LP-WUS information includes the carrier information, the LP-WUS information corresponds to k3+k4 bits, the carrier information corresponds to k3 bits, and the LP-WUS information is carried by 2 k3+k4 first overlaid sequences.

[0264] In some possible implementation manners, the LP-WUS information is carried by a second overlaid sequence, the first overlaid sequence is obtained by cyclically shifting and / or offsetting the second overlaid sequence, and a cyclic shift amount of the cyclic shifting and / or an offset amount of the offsetting is determined by the carrier information.

[0265] In some possible implementation manners, the carrier information is indicated by a high level position of the first overlaid sequence.

[0266] In some possible implementation manners, the LP-WUS carries first scrambling information, and the first scrambling information is obtained by scrambling the LP-WUS information by using the carrier information.

[0267] In some possible implementation manners, the LP-WUS carries second scrambling information, the second scrambling information is obtained by adding a second CRC to the LP-WUS information, and the second CRC is obtained by scrambling a first CRC by using the carrier information.

[0268] In some possible implementation manners, the carrier information is carried by a preamble sequence in the LP-WUS.

[0269] In some possible implementation manners, the carrier information is carried by a third overlaid sequence modulated in the preamble sequence.

[0270] In some possible implementation manners, the carrier information is carried by time domain resource information or frequency domain resource information of the LP-WUS.

[0271] In some possible implementation manners, in the communication apparatus provided in the embodiments of the present application, the time domain resource information is time domain offset information, and the time domain offset information is an offset between a sending position of the LP-WUS and a monitoring position of the PDCCH.

[0272] In some possible implementation manners, in the communication apparatus provided in the embodiments of the present application, the processing unit 1502 is configured to generate the LP-WUS; and the LP-WUS is used to determine carrier information, and the carrier information is used to indicate n carriers in N carriers corresponding to the terminal device, where N and n are positive integers, N is greater than or equal to 2, and 1 is less than or equal to n and less than or equal to N.

[0273] The transceiver unit 1501 is configured to send the LP-WUS.

[0274] In some possible implementation manners, in the communication apparatus provided in the embodiments of the present application, the processing unit 1502 is specifically configured to scramble information of the LP-WUS based on the carrier information to obtain first scrambling information, and generate the LP-WUS based on the first scrambling information.

[0275] In some possible implementation manners, in the communication apparatus provided in the embodiments of the present application, the processing unit 1502 is specifically further configured to scramble the first CRC code based on the carrier information to obtain a second CRC code, add the second CRC code to the information of the LP-WUS to obtain second scrambling information, and generate the LP-WUS based on the second scrambling information.

[0276] In some possible implementation manners, in the communication apparatus provided in the embodiments of the present application, the transceiver unit 1501 is specifically configured to send the LP-WUS based on the time domain resource information or the frequency domain resource information, and the time domain resource information or the frequency domain resource information is used to indicate the carrier information.

[0277] It should be noted that the information interaction and execution process between the units of the above apparatus, since the same technical effects as the method embodiments of the present application based on the same concept, the specific content can be referred to the description of the method embodiments of the present application, which will not be repeated here.

[0278] FIG. 16 is an example of a structure of a communication apparatus according to an embodiment of the present application. The communication apparatus 1600 can be a first device, including but not limited to a base station, a core network unit. FIG. 16 shows a simplified structure of a base station. The base station includes a 1610 part, a 1620 part, and a 1630 part. The 1610 part is mainly used for baseband processing, controlling the base station, etc. The 1610 part is usually the control center of the base station, which can be referred to as a processor, and is configured to control the base station to perform the processing operations of the first device side in the above method embodiments. The 1620 part is mainly used for storing computer program codes and data. The 1630 part is mainly used for transceiving radio frequency signals and converting radio frequency signals and baseband signals. The 1630 part can be referred to as a transceiver module, a transceiver, a transceiving circuit, or a transceiver circuit, etc. The transceiver module of the 1630 part can also be referred to as a transceiver or a transceiver circuit, etc., which includes an antenna 1633 and a radio frequency circuit (not shown in FIG. 16), where the radio frequency circuit is mainly used for radio frequency processing. Optionally, the devices in the 1630 part used for realizing the receiving function can be regarded as a receiver, and the devices used for realizing the transmitting function can be regarded as a transmitter, i.e., the 1630 part includes a receiver 1632 and a transmitter 1631. The receiver can also be referred to as a receiving module, a receiver, or a receiving circuit, etc., and the transmitter can be referred to as a transmitting module, a transmitter, or a transmitting circuit, etc.

[0279] The 1610 part and the 1620 part can include one or more single boards, and each single board can include one or more processors and one or more memories. The processors are configured to read and execute the programs in the memories to realize the baseband processing functions and control the base station. If there are multiple single boards, the single boards can be interconnected to enhance the processing capability. As an optional implementation, the multiple single boards can share one or more processors, or share one or more memories, or share one or more processors and one or more memories at the same time.

[0280] For example, in an implementation, the transceiver module of the 1630 part is configured to perform the transceiving-related processes performed by the base station (the first device) in the above method embodiments. The processor of the 1610 part is configured to perform the processing-related processes performed by the base station in the above method embodiments.

[0281] It should be understood that FIG. 16 is merely an example but not a limitation. The above network device including a processor, a memory, and a transceiver can not depend on the structure shown in FIG. 16.

[0282] FIG. 17 is an example of a structure of a communication apparatus according to an embodiment of the present application. The communication apparatus can be a second device, which includes but is not limited to a mobile phone, a smart wearable device (e.g., a smart watch), and the like. In the following, the communication apparatus is exemplified by a mobile phone, which can include a processor 310, an external memory interface 320, an internal memory 321, a display screen 330, a camera 340, an antenna 100, an antenna 200, a cellular communication module 350, and a short-range communication module 360, and the like.

[0283] It can be understood that the structure illustrated in the embodiment is not a specific limitation on the communication apparatus. In other embodiments, the communication apparatus can include more or fewer components than those illustrated, or combine certain components, or split certain components, or different arrangement of components. The components illustrated can be implemented in hardware, software, or a combination of software and hardware.

[0284] The processor 310 can include one or more processing units. For example, the processor 310 can include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), and the like. Different processing units can be independent devices or integrated in one or more processors.

[0285] It can be understood that the interface connection relationship between the modules illustrated in the embodiment is only illustrative and does not constitute a structural limitation on the communication apparatus. In other embodiments of the present application, the communication apparatus can also use different interface connection manners or a combination of multiple interface connection manners.

[0286] The external memory interface 320 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the communication apparatus. The external memory card communicates with the processor 310 through the external memory interface 320 to realize the data storage function. For example, files such as music and videos are saved in the external memory card.

[0287] The internal memory 321 can be used to store computer executable program codes, which include instructions. The processor 310 performs various function applications and data processing of the communication device by running the instructions stored in the internal memory 321, thereby implementing the communication method in the above embodiments. The internal memory 321 can include a program storage area and a data storage area. The program storage area can store an operating system, at least one application program required by a function (such as a sound playing function, an image playing function, etc.), and the like. The data storage area can store data created during the use of the communication device (such as audio data, a phone book, etc.), and the like. In addition, the internal memory 321 can include a high-speed random access memory, and can further include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash storage (UFS), and the like. The processor 310 performs various function applications and data processing of the communication device by running the instructions stored in the internal memory 321 and / or the instructions stored in the memory disposed in the processor.

[0288] The wireless communication function of the communication device can be implemented by the antenna 100, the antenna 200, the cellular communication module 350, the short-range communication module 360, a modem processor, and a baseband processor, and the like.

[0289] The antenna 100 and the antenna 200 are used to transmit and receive electromagnetic wave signals. Each antenna in the communication device can be used to cover a single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example, the antenna 100 can be multiplexed as a diversity antenna of a wireless local area network. In some other embodiments, the antennas can be used in combination with a tuning switch.

[0290] The cellular communication module 350 can provide a solution including 2G / 3G / 4G / 5G wireless communication applied to the communication device. The cellular communication module 350 can include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), and the like. The cellular communication module 350 can receive electromagnetic waves by the antenna 100, and perform filtering, amplification, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The cellular communication module 350 can also amplify the signals modulated by the modem processor, and convert the signals into electromagnetic waves radiated by the antenna 100. In some embodiments, at least part of the function modules of the cellular communication module 350 can be disposed in the processor 310. In some embodiments, at least part of the function modules of the cellular communication module 350 and at least part of the modules of the processor 310 can be disposed in the same device.

[0291] In some embodiments, the communication device initiates or receives a call request through the cellular communication module 350 and the antenna 100.

[0292] In addition, on the above components, an operating system runs. For example, iOS operating system, Android operating system, Windows operating system, etc. Application programs can be installed and run on the operating system. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the explanation and beneficial effects of the above-mentioned related content in any of the communication devices can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0293] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above- described device embodiments are only schematic. For example, the division of the modules is only a logical function division. In actual implementation, another division mode can be used. For example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the modules or components shown or discussed can be indirect coupling or communication connection through some interface, device or module, which can be electrical, mechanical or other form.

[0294] The modules described as separate components can or can not be physically separated, and the components shown as modules can or can not be physical modules, i.e. they can be located in one place or distributed to a plurality of network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment.

[0295] In addition, the functional modules in each embodiment of the present application can be integrated into a processing module, or each module can exist physically, or two or more modules can be integrated into one module. The above integrated module can be realized in the form of hardware or in the form of software functional module.

[0296] The integrated module, if realized in the form of software functional module and sold or used as an independent product, can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially contribute to the part or the whole or part of the technical solutions in the form of software products, which are stored in a storage medium and include a plurality of instructions for making a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the processes of the methods described in the embodiments of the present application. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk and various program code storage media.

[0297] The above-described embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method characterized by comprising: The method is applied to a terminal device and includes the following steps: receiving a low-power wake-up signal; based on carrier information determined according to the low-power wake-up signal, obtaining wake-up information of n carriers in N carriers corresponding to the terminal device, the wake-up information being used to indicate whether to activate the n carriers, N and n being positive integers, N≥2, and 1≤n≤N.

2. The method of claim 1, wherein, The carrier information is carried by a first overlaid sequence modulated in the low-power wake-up signal.

3. The method of claim 2, wherein, The carrier information includes at least one carrier sub-information, the carrier sub-information being used to indicate activation of m carriers in the N carriers, the carrier sub-information being carried by a group of first overlaid sequences, the group of first overlaid sequences including at least one first overlaid sequence, m being a positive integer, and 1≤m≤n.

4. The method according to any one of claims 2 to 3, characterized in that, The carrier information and information of the low-power wake-up signal are respectively carried by first overlaid sequences. Or, the information of the low-power wake-up signal includes the carrier information, and the information of the low-power wake-up signal is carried by a first overlaid sequence.

5. The method according to any one of claims 2 to 3, characterized in that, The information of the low-power wake-up signal includes first bit information, the first bit information being used to indicate a first sub-group, the first sub-group at least including the terminal device, and the carrier information being carried by a first overlaid sequence at a high level position corresponding to the first bit information.

6. The method according to any one of claims 2 to 4, characterized in that, The carrier information corresponds to k1 bits, and the information of the low-power wake-up signal corresponds to k2 bits. The carrier information is carried by 2 k1 first overlaid sequences, and the information of the low-power wake-up signal is carried by 2 k2 first overlaid sequences.

7. The method according to any one of claims 2 to 4, characterized in that, The information of the low-power wake-up signal includes the carrier information, the information of the low-power wake-up signal corresponds to k3+k4 bits, the carrier information corresponds to k3 bits, and the information of the low-power wake-up signal is carried through 2 k3+k4 first overlaid sequences.

8. The method of claim 2, wherein, The first overlaid sequence is obtained by cyclically shifting and / or offsetting a second overlaid sequence, a shift amount of the cyclic shift and / or an offset amount of the offset being determined by the carrier information.

9. The method of claim 2, wherein, The carrier information is indicated by a high level position where the first overlaid sequence is located.

10. The method of claim 1, wherein, The low-power wake-up signal carries first scrambling information, the first scrambling information being obtained by scrambling information of the low-power wake-up signal by using the carrier information.

11. The method of claim 1, wherein, The low-power wake-up signal carries second scrambling information, the second scrambling information being obtained by adding a second cyclic redundancy check code to the information of the low-power wake-up signal, the second cyclic redundancy check code being obtained by scrambling a first cyclic redundancy check code by using the carrier information.

12. The method of claim 1, wherein, The carrier information is carried by a preamble sequence in the low-power wake-up signal.

13. The method of claim 12, wherein, The carrier information is carried by a third overlaid sequence modulated in the preamble sequence.

14. The method of claim 1, wherein, The carrier information is indicated by time domain resource information or frequency domain resource information of the low-power wake-up signal.

15. The method of claim 14, wherein, The time domain resource information is time domain offset information, and the time domain offset information is an offset amount between a transmission position of the low-power wake-up signal and a listening position of a physical downlink control channel.

16. A method of communication, comprising: The method is applied to a network device and includes the following steps: generating a low-power wake-up signal, the low-power wake-up signal being used to determine carrier information, the carrier information being used to indicate activation of n carriers in N carriers corresponding to a terminal device, N and n being positive integers, N≥2, and 1≤n≤N; sending the low-power wake-up signal.

17. The method of claim 16, wherein, The carrier information is carried by a first overlaid sequence modulated in the low-power wake-up signal.

18. The method of claim 16, wherein, The generating the low-power wake-up signal comprises: scrambling information of the low-power wake-up signal based on the carrier information to obtain first scrambled information; generating the low-power wake-up signal based on the first scrambled information.

19. The method of claim 16, wherein, The generating the low-power wake-up signal comprises: scrambling a first cyclic redundancy check code based on the carrier information to obtain a second cyclic redundancy check code; adding the second cyclic redundancy check code to the information of the low-power wake-up signal to obtain second scrambled information; generating the low-power wake-up signal based on the second scrambled information.

20. The method of claim 16, wherein, The carrier information is carried by a preamble sequence in the low-power wake-up signal.

21. The method of claim 16, wherein, The sending the low-power wake-up signal comprises: sending the low-power wake-up signal based on time domain resource information or frequency domain resource information, the time domain resource information or the frequency domain resource information being used to indicate the carrier information.

22. A communications device, characterized by The communication device comprises at least one processor configured to invoke computer instructions in a memory to cause the communication device to perform the communication method of any one of claims 1 to 15, or to perform the communication method of any one of claims 16 to 21.

23. A computer program product, characterised in that, The computer program product comprises instructions which, when executed on a computer, cause the computer to perform the communication method of any one of claims 1 to 15, or to perform the communication method of any one of claims 16 to 21.

24. A computer storage medium, comprising, The computer program product comprises instructions which, when executed on a computer, cause the computer to perform the communication method of any one of claims 1 to 15, or to perform the communication method of any one of claims 16 to 21.

Images