CN113366890A

CN113366890A - Wake-up signal sending method and device

Info

Publication number: CN113366890A
Application number: CN201980090753.7A
Authority: CN
Inventors: 米翔; 罗之虎; 铁晓磊; 金哲
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2021-09-07
Anticipated expiration: 2039-03-29
Also published as: WO2020199021A1; CN113366890B

Abstract

A method and a device for sending wake-up signals are used for solving the problems that in the prior art, terminal equipment blind detection wake-up signals are high in complexity and high in power consumption. The method and the device provided by the application can be applied to the internet of things, such as MTC, IoT, LTE-M, M2M, D2D, relay, and the like, wherein the first device can generate a wake-up signal sequence based on a ZC sequence and a GOLD sequence, the length of the GOLD sequence is 264 × L (N-1) +264 × M, N is a sequence index corresponding to a group to which the second device belongs, L is the number of subframes corresponding to the maximum duration of the wake-up signal sequence, and M is the number of subframes corresponding to the actual duration of the wake-up signal sequence; after generating the wake-up signal sequence, the first device sends the wake-up signal sequence to the second device; after receiving the wake-up signal sequence, the second device generates a local sequence based on the ZC sequence and the GOLD sequence, where the length of the GOLD sequence is 264 × L (N-1) +264 × K, and K is the number of subframes corresponding to the candidate duration of the wake-up signal sequence determined by the second device.

Description

Wake-up signal sending method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for sending a wake-up signal.

Background

At present, in some communication systems, such as a narrowband band internet of things (NB-IoT), a fifth generation (5G) network, or a new radio access (NR) system, a terminal has two states, one is a connection state, which indicates that the terminal has established a connection with a network device and can directly communicate; one is an idle state or a sleep state, and the terminal cannot directly communicate with the network device. In order to ensure that the network device can find the terminal in the idle state in time, the network device sends a paging signal to the terminal in a paging mode to indicate that the terminal is switched from the idle state to a connection state so as to communicate with the network device; accordingly, in order to receive the paging signal, the terminal periodically wakes up to monitor a Physical Downlink Control Channel (PDCCH) to receive the paging signal,

in practical applications, the probability of the network device paging the terminal is generally low. In order to reduce power consumption of the terminal for monitoring the PDCCH, the network device may send a wake-up signal (WUS) to the terminal in advance, and the terminal may monitor the PDCCH only after receiving the wake-up signal.

In the existing scheme, when a network device generates a wake-up signal, the network device generates the wake-up signal based on a ZC sequence and a GOLD sequence, wherein the GOLD sequence is generated according to the number of subframes actually occupied by the wake-up signal, and accordingly, when monitoring the wake-up signal, the terminal does not know the number of subframes actually occupied by the wake-up signal, and needs to perform blind detection on the wake-up signal.

In the process, when the terminal performs blind detection, a local sequence needs to be generated for each possible number of occupied subframes, so that the complexity and power consumption of the terminal blind detection are increased.

Disclosure of Invention

The application provides a wake-up signal sending method and device, which are used for solving the problems of high complexity and high power consumption of blind detection wake-up signals of terminal equipment in the prior art.

In a first aspect, an embodiment of the present application provides a method for sending a wake-up signal, where the method includes: the first device may generate a wake-up signal sequence based on the ZC sequence and the GOLD sequence, where the length of the GOLD sequence is 264 × L (N-1) +264 × M, N is a sequence index corresponding to a group to which the second device belongs, L is a number of subframes corresponding to a maximum duration of the wake-up signal sequence, L is a positive integer, M is a number of subframes corresponding to an actual duration of the wake-up signal sequence, M is a positive integer and less than or equal to L, and N is a positive integer greater than 1; after generating the wake-up signal sequence, the first device transmits the wake-up signal sequence to the second device.

By the method, the first device utilizes the GOLD sequence with the length of 264 × L (N-1) +264 × M when generating the wake-up signal sequence, so that the second device serving as the receiving end can also adopt GOLD sequences with the same length when generating the local sequence, and each possible M value can have the same part between the adopted GOLD sequences, so that the local sequence also has the same part.

In one possible design, the first device may generate the wake-up signal sequence based on the ZC sequence and the GOLD sequence by clipping first, and for example, the first device may clip bits 264 × L (N-1) +1 to 264 × L (N-1) +264 × M in the GOLD sequence to form a target sequence; thereafter, a wake-up signal sequence is generated based on the ZC sequence and the target sequence.

By the method, the effective part can be intercepted firstly by the mode of intercepting and then generating, so that the operation amount can be reduced, the awakening signal can be generated more quickly, and the power consumption can be further reduced.

In one possible design, when the first device generates the wake-up signal sequence based on the ZC sequence and the target sequence, the first device may generate the wake-up signal sequence based on the ZC sequence and the complex sequence converted from the target sequence, for example, by performing a sequence dot multiplication.

By the method, the first equipment can conveniently generate the wake-up signal sequence through the operation among the sequences.

In one possible design, when the first device generates the wake-up signal sequence based on the ZC sequence and the GOLD sequence, the first device may generate the sequence first and then truncate the valid portion, for example, the first device may generate a candidate wake-up signal sequence based on the ZC sequence and the GOLD sequence, where the candidate wake-up signal sequence has a length of 132 × L (N-1) +132 × M; and then, intercepting the 132 th position L (N-1) +1 to the 132 th position L (N-1) +132 th position M of the candidate wake-up signal sequence as a wake-up signal sequence.

By the method, the effective part can be directly intercepted finally by the mode of firstly generating the sequence and then intercepting, so that the method is more flexible and can be applied to different scenes.

In one possible design, when the first device generates the candidate wake-up signal sequence based on the ZC sequence and the GOLD sequence, the first device may generate the candidate wake-up signal sequence according to the ZC sequence and the complex sequence converted from the GOLD sequence, for example, by performing sequence dot multiplication.

By the method, the first device can generate the candidate wake-up signal sequence through the operation between the sequences conveniently.

In one possible design, the wake-up signal sequence satisfies the following equation:

wherein, w_N(M) is a wake-up signal sequence, x is 0,1, …, M-1, M is 0,1, …,131,

is a ZC sequence and is a sequence of ZCs,

wherein

For cell identification, n-m mod132,

is GOLD sequence, N is sequence index corresponding to group to which the second device belongs, N is_fThe frame number n of the first frame where the first paging opportunity PO corresponding to the wake-up signal sequence is located_sIs the time slot number of the first time slot where the first PO corresponding to the wake-up signal sequence is located.

By the method, the wake-up signal sequence meets a certain formula, and the wake-up signal sequence can be directly generated by the formula, so that the generation mode is more convenient.

In one possible design, each of the plurality of second devices corresponding to the first device belongs to at least one group, each group has a group index, each group index corresponds to one sequence index, the first device may determine the sequence index N corresponding to the group to which the second device belongs before generating the wake-up signal sequence based on the ZC sequence and the GOLD sequence, and for example, the first device may determine the sequence index N corresponding to the group to which the second device belongs according to the group index of the group to which the second device belongs based on a correspondence between the group index and the sequence index of the group.

By the method, the sequence index corresponding to the group to which the second device belongs can be effectively and conveniently determined through the corresponding relation between the group index and the sequence index of the group, and the wake-up signal sequence can be generated more quickly.

In a second aspect, an embodiment of the present application provides a method for sending a wake-up signal, where the method includes: the second device receiving a wake-up signal sequence from the first device; for sequence detection, the second device may generate a local sequence based on the ZC sequence and the GOLD sequence, where the length of the GOLD sequence is 264 × L (N-1) +264 × K, N is a sequence index corresponding to a group to which the second device belongs, L is a number of subframes corresponding to a maximum duration of the wake-up signal sequence, L is a positive integer, K is a number of subframes corresponding to a candidate duration of the wake-up signal sequence determined by the second device, that is, a number of subframes corresponding to a possible duration of the wake-up signal sequence determined by the second device, and is one possible value of M, K is a positive integer and less than or equal to L, and N is a positive integer greater than 1; and then, the second equipment performs sequence detection on the wake-up signal sequence based on the local sequence.

By the method, when the second device generates the local sequence in the process of sequence detection, the GOLD sequences of 264 × L (N-1) +264 × K are used, and each value K has the same part between the adopted GOLD sequences, so that the local sequences also have the same part.

In one possible design, when generating the local sequence based on the ZC sequence and the GOLD sequence, the second device may perform truncation before generation, and for example, the second device may truncate bits 264 × L (N-1) +1 to 264 × L (N-1) +264 × K in the GOLD sequence to form a target sequence; thereafter, a wake-up signal sequence is generated based on the ZC sequence and the target sequence.

By the method, the effective part can be intercepted firstly by the mode of generating after intercepting, so that the calculation amount can be reduced, the local sequence can be generated more quickly, and then the sequence detection is carried out, so that the power consumption can be further reduced.

In one possible design, when the second device generates the local sequence based on the ZC sequence and the target sequence, the second device may generate the local sequence based on the ZC sequence and the complex sequence converted from the target sequence, for example, by performing sequence dot multiplication.

By the method, the second device can generate the local sequence through the operation between the sequences conveniently.

In one possible design, when generating the local sequence based on the ZC sequence and the GOLD sequence, the second device may generate a candidate sequence based on the ZC sequence and the GOLD sequence, where the candidate sequence has a length of 132 × L (N-1) +132 × K; and then, cutting the positions from 132X L (N-1) +1 to 132X L (N-1) + 132X K of the candidate sequence as a local sequence.

In one possible design, when the second device generates the candidate sequence based on the ZC sequence and the GOLD sequence, the second device may generate the candidate sequence based on the ZC sequence and the complex sequence converted from the GOLD sequence, for example, by performing sequence dot multiplication.

By the method, the device can generate the candidate sequence through the operation between the sequences conveniently.

In one possible design, the local sequence satisfies the following formula, including:

wherein, w_N(m) is a native sequence, x is 0,1, …, K-1, m is 0,1, …,131,

is a ZC sequence and is a sequence of ZCs,

wherein

For cell identification, n-m mod132,

By the method, the local sequence meets a certain formula, the local sequence can be directly generated by the formula, the generation mode can be more convenient and simpler, and the sequence detection efficiency can be improved.

In one possible design, when the second device performs sequence detection on the wake-up signal sequence based on the local sequence, the second device may determine a correlation value between the local sequence and the wake-up signal sequence, and determine that the detection is successful when the correlation value exceeds a threshold; when the correlation value does not exceed the threshold, it is determined that the wake-up signal sequence is not detected, and it may be considered that the first device does not transmit the wake-up signal sequence whose number of subframes corresponding to the duration is K.

By the method, whether the wake-up signal sequence is detected or not can be conveniently determined by determining the correlation value of the two sequences.

In one possible design, the first device may correspond to a plurality of second devices, each of the plurality of second devices belongs to at least one group, each group has a group index, each group index corresponds to one sequence index, before the second device generates the local sequence based on the ZC sequence and the GOLD sequence, the second device may determine the sequence index N corresponding to the group to which the second device belongs, and for example, the second device may determine the sequence index N corresponding to the group to which the second device belongs according to the group index of the group to which the second device belongs based on a correspondence relationship between the group index and the sequence index of the group.

By the method, the sequence index corresponding to the group to which the second device belongs can be effectively and conveniently determined through the corresponding relation between the group index and the sequence index of the group, a local sequence can be generated more quickly, and the efficiency of sequence detection is further improved.

In a third aspect, an embodiment of the present application further provides a communication apparatus, where the communication apparatus is applied to a first device, and for beneficial effects, reference may be made to the description of the first aspect and details are not repeated here. The apparatus has the functionality to implement the actions in the method instance of the first aspect described above. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions. In a possible design, the structure of the apparatus includes a processing unit and a sending unit, and these units may perform corresponding functions in the method example of the first aspect, which is specifically referred to the detailed description in the method example, and are not described herein again.

In a fourth aspect, an embodiment of the present application further provides a communication apparatus, where the communication apparatus is applied to a second device, and for beneficial effects, reference may be made to description of the second aspect and details are not repeated here. The apparatus has the functionality to implement the actions in the method instance of the second aspect described above. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions. In a possible design, the structure of the apparatus includes a receiving unit and a processing unit, and these units may perform corresponding functions in the method example of the second aspect, which is specifically referred to the detailed description in the method example, and are not described herein again.

In a fifth aspect, an embodiment of the present application further provides a communication apparatus, where the communication apparatus is applied to a first device, and for beneficial effects, reference may be made to the description of the first aspect and details are not repeated here. The communication device is configured to include a processor and a memory, and the processor is configured to support the terminal to perform the corresponding functions of the method of the first aspect. The memory is coupled to the processor and retains program instructions and data necessary for the communication device. The communication device also comprises a communication interface used for communicating with other equipment.

In a sixth aspect, an embodiment of the present application further provides a communication apparatus, where the communication apparatus is applied to a second device, and for beneficial effects, reference may be made to the description of the second aspect and details are not repeated here. The communication device has a structure including a processor and a memory, and the processor is configured to support the terminal to execute the corresponding functions in the method of the second aspect. The memory is coupled to the processor and retains program instructions and data necessary for the communication device. The communication device also includes a transceiver for communicating with other devices.

In a seventh aspect, the present application also provides a computer-readable storage medium having stored therein instructions, which, when executed on a computer, cause the computer to perform the method of the above-mentioned aspects.

In an eighth aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

In a ninth aspect, the present application further provides a computer chip, where the chip is connected to a memory, and the chip is used to read and execute a software program stored in the memory, and perform the methods in the above aspects.

Drawings

FIG. 1A is a schematic illustration of a location of a paging opportunity for a terminal device;

fig. 1B is a schematic diagram of WUS sequence generation in IB deployment mode;

fig. 1C is a schematic diagram of WUS sequence positions in a GB deployment mode and an SA deployment mode;

FIG. 1D is a schematic illustration of the positions of truncated Gold sequences corresponding to different groups;

FIG. 1E is a schematic diagram of the positions of truncated Gold sequences corresponding to different values of M;

fig. 2 is an architecture diagram of a communication system according to an embodiment of the present application;

fig. 3 is a schematic diagram of a method for sending a wake-up signal according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating positions of GOLD sequences intercepted from reference GOLD sequences corresponding to different groups according to an embodiment of the present application;

FIG. 5 is a schematic diagram of the positions of target sequences corresponding to different K values in a reference GOLD sequence according to the embodiment of the present application;

fig. 6 is a block diagram of a communication device according to an embodiment of the present application;

fig. 7 is a block diagram of a communication device according to an embodiment of the present application;

fig. 8 is a block diagram of a communication device according to an embodiment of the present application;

fig. 9 is a structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The application provides a wake-up signal sending method and device, which are used for solving the problems that in the prior art, blind detection of a wake-up signal by terminal equipment is complex and power consumption is high. The method and the device are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated. The method and the device provided in the embodiment of the present application are not limited to application scenarios, and may be applied to the internet of things, for example, machine-to-machine/machine-type communications (M2M/MTC), internet of things (IoT), long term evolution-machine to machine (LTE-M), machine-to-machine (M2M), device-to-device (D2D), relay (relay), and the like. "

1) Terminal equipment, including devices that provide voice and/or data connectivity to a user, may include, for example, handheld devices with wireless connection capability or processing devices connected to wireless modems. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a V2X terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (IoT) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber state), a mobile station (mobile state), a remote station (remote state), an access point (access point, AP), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), or a user equipment (user device), etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user.

The various terminal devices described above, if located on a vehicle (e.g., placed in or installed in the vehicle), may be considered to be vehicle-mounted terminal devices, which are also referred to as on-board units (OBUs), for example.

2) Network devices, including, for example, Access Network (AN) devices, such as base stations (e.g., access points), may refer to devices in AN access network that communicate with wireless terminal devices over one or more cells over AN air interface. The base station may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB or eNB or e-NodeB) in an LTE system or an LTE-a (long term evolution-advanced), or may also include a fifth generation mobile communication technology (the 5)^thgeneration, 5G) new radio interface (NR) system, or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud RAN (Cloud RAN) system, or may also include a relay device, where the embodiment of the present invention is not limited.

3) PDCCH, downlink control channel sent by a network device (such as a base station) to a terminal device, is used for at least one or more of the following functions: (1) and sending downlink scheduling information, also called downlink assignment (downlink assignment) information, to the terminal equipment, wherein the downlink scheduling information includes transmission parameters of the PDSCH, so that the terminal equipment can receive the PDSCH. The PDSCH is used for bearing downlink data sent by the network equipment to the terminal equipment; (2) and sending uplink scheduling information to the terminal device, wherein the uplink scheduling information is also called uplink grant (uplink grant) information, and the uplink scheduling information includes the transmission parameters of the PUSCH, so that the terminal device sends the PUSCH to the network device. The PUSCH is used for bearing uplink data sent to the network equipment by the terminal equipment; (3) sending a request for reporting a Channel Quality Indicator (CQI); (4) sending an uplink power control command, wherein the uplink power control command is used for a terminal device to determine the sending power of an uplink channel; (5) carrying related information of hybrid automatic repeat request (HARQ); (6) the Radio Network Temporary Identifier (RNTI) information is carried, the RNTI information may be implicitly included in Cyclic Redundancy Check (CRC), and the RNTI information is used for the terminal device to determine whether the PDCCH sent by the network device is sent to the terminal device.

The information carried by the PDCCH may be referred to as Downlink Control Information (DCI), one PDCCH carries only one format of DCI scrambled by one RNTI, and the information carried by the DCI may be different according to different DCI formats (formats) and/or different configurations of higher layer signaling (RRC signaling). The DCI may indicate cell-level information, such as downlink control information indicating that a terminal device is scrambled using a system message radio network temporary identifier (RNTI, SI-RNTI), a paging RNTI (P-RNTI), or a random access RNTI (RA-RNTI), or may also indicate terminal device-level information, such as downlink control information indicating that a terminal device is scrambled using a cell RNTI (C-RNTI), a configured scheduling RNTI (CS-RNTI), or a semi-persistent CSI RNTI (SP-CSI-RNTI).

The network device may send multiple PDCCHs on one control resource set, where the multiple PDCCHs may carry the same or different control information, including scheduling information of downlink data or scheduling information of uplink data, that is, the scheduling information may schedule downlink data of the terminal device, and may also schedule uplink data of the terminal device. In addition, the network device may also schedule multiple terminal devices in one control resource set, and each scheduling information is transmitted on an independent PDCCH.

One PDCCH is transmitted in the form of a control-channel element (CCE), which may also be referred to as a time-frequency resource of one PDCCH including 1 or 2 CCEs. Wherein one CCE consists of 6 consecutive subcarriers over one subframe.

4) The PDCCH candidate (PDCCH candidate), where the terminal device needs to perform blind detection on the configured aggregation level and the PDCCH candidate corresponding to the aggregation level to acquire the downlink control information. The network device may configure the aggregation level set. For example, an aggregation level set {1,2} may be configured, a group of CCEs with a corresponding number corresponds to one PDCCH candidate, the network device may send one PDCCH through one PDCCH candidate, and correspondingly, the terminal device performs blind detection on PDCCHs with

aggregation levels

1 and 2, respectively, to determine whether there is a PDCCH addressed to the terminal device.

5) A PDCCH search space (PDCCH search space set), a candidate PDCCH set that the terminal device needs to monitor is referred to as a PDCCH search space. The candidate PDCCH set corresponding to a certain aggregation level may be referred to as a PDCCH search space under the aggregation level. One PDCCH search space is configured with parameters such as a control resource set, a PDCCH monitoring period, an aggregation level and the number of candidate PDCCHs corresponding to the aggregation level.

The PDCCH search space is divided into a common search space (CSS set) and a UE-specific PDCCH search space (UE-specific search space set). The CSS set is used to transmit control information related to paging (paging), random access Response (RA Response), and Broadcast Control Channel (BCCH), and the control information is mainly common information at a cell level, which is the same for all UEs. The USS set is used to transmit control information related to a downlink shared channel(s), DL-SCH), an uplink shared channel(s), UL-SCH, and the like, and the control information is mainly UE-level information.

Terminal equipment in an NB-IoT system needs to monitor a NPDCCH candidate set called NPDCCH Search Space (SS) to acquire DCI, and resources of the search space are periodically distributed. The network device may indicate a period of the search space (i.e., a length of the period of the search space in a time domain) and a starting position of the search space in each period to the terminal device through a system message or Radio Resource Control (RRC) signaling, and the terminal device blindly detects the NPDCCH in the search space according to the indication of the network device.

6) For a terminal device in an idle state, when a network device needs to send service data to the terminal device or the network device needs to report the service data to the terminal device, the network device may notify the terminal device in a paging manner, that is, the terminal device is instructed to switch from the idle state to a connected state through a paging message. After receiving the paging message, the terminal device may enter a connected state under the instruction of the paging message, so as to send or receive service data.

In general, the terminal device in idle state will wake up periodically to listen for paging message, and see if there is any paging message indicating to enter connected state. As shown in fig. 1A, a period in which the terminal device wakes up is referred to as a DRX period. The DRX cycle may be notified to the terminal device by the network device through a system message. The location where the terminal wakes up is the Paging Occasion (PO). The terminal device may monitor the PDCCH at the PO to monitor for paging messages.

The PO indicates the starting position where the terminal device monitors the PDCCH, and the terminal device may determine a PDCCH search space (search space) according to the PO and detect the PDCCH in the PDCCH search space in a blind detection manner.

If the terminal device detects the PDCCH, the terminal device may receive a Physical Downlink Shared Channel (PDSCH) according to the detected indication information carried on the PDCCH, where the PDSCH carries a paging message.

7) Wake-up signal (WUS), the probability of paging a UE is generally low in some wireless communication networks, such as IoT systems. This may cause most POs to be empty, i.e., the network device does not send the corresponding PDCCH at the PO. However, the terminal still needs to monitor the PDCCH at each PO, because the terminal only knows whether the network device sends the PDCCH after the blind detection is completed. This wastes the power consumption of the terminal. In order to save the power consumption of the terminal, a wake-up signal is introduced; the network device indicates through the WUS whether the terminal needs to wake up at the PO to detect the PDCCH.

If the PDCCH needs to be sent on the PO, for example, the network device sends the WUS before the PO when the network device needs to page the terminal device or the system message changes; if there is no need to send a PDCCH on a PO, the network device will not send a WUS before the PO.

For the terminal equipment, detecting a wake-up signal before PO, and if WUS is detected, detecting a subsequent PDCCH; if no WUS is detected, the subsequent PDCCH is not detected.

It should be noted that the wake-up signal transmitted by the network device is usually in the form of a sequence, so the wake-up signal may also be referred to as a wake-up signal sequence.

8) In the description of the present application, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor order, and the terms "system" and "network" may be used interchangeably in embodiments of the present invention. "plurality" means two or more.

"and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

The manner in which a network device generates WUS and a terminal device detects WUS will be described below using WUS introduced in an NB-IoT system as an example.

Here, two parameters, i.e., the number of subframes (WUS maximum duration) L corresponding to the maximum duration of the WUS sequence and the number of subframes (WUS actual duration) M corresponding to the actual duration of the WUS sequence, have to be described, and the relationship between L and M is M < ═ L.

Usually, L is configured by a network device, and the network device may notify the terminal device through a system message, that is, the terminal device may know L but may not know M; for a terminal device, there are many cases of the number of subframes corresponding to the actual duration of a WUS sequence, and the possible value sets of M corresponding to different L are shown in table 1

TABLE 1

L	Set of possible values of M
1	{1}
2	{1,2}
4	{1,2,4}
8	{1,2,4,8}
16	{1,2,4,8,16}
32	{1,2,4,8,16,32}
64	{1,2,4,8,16,32,64}
128	{1,2,4,8,16,32,64,128}
256	{1,2,4,8,16,32,64,128,256}
512	{1,2,4,8,16,32,64,128,256,512}
1024	{1,2,4,8,16,32,64,128,256,512,1024}

For example, if L is 1, then M is 1, and if L is 8, then M may take on values of 1,2,4, and 8. In this embodiment, the terminal device may determine a subframe number K corresponding to the candidate duration of the wake-up signal sequence, where a value of K is M possible values corresponding to L.

Generation of WUS.

The NB-IoT system has 3 deployment modes: in-band deployment (IB), guard band deployment (GB), and independent deployment (SA); the location of the WUS mapping is different for different deployment modes.

In IB deployment mode, the last 11 OFDM symbols of each subframe may be used to transmit WUS, each OFDM symbol includes 12 REs, and a total of 132 REs may be used to transmit WUS; in both the GB and SA deployment modes, all OFDM symbols (i.e., 14 OFDM symbols) of each subframe are available for transmitting WUS. As shown in fig. 1B, a schematic diagram of the WUS sequence is generated for the IB deployment mode.

The WUS sequence is generated based on a ZC sequence and a Gold sequence, and the WUS sequence mapped on any subframe is generated based on the first sequence of the ZC sequence and the Gold sequence because the number of subframes corresponding to the actual duration of the WUS sequence is M.

The ZC sequences adopted by the WUS sequences mapped to any subframe are the same, the length of the ZC sequence initially generated is 131, and then the ZC sequence is a complex sequence having a length of 132 after cyclic shift length extension to 132.

For a Gold sequence, the WUS sequence mapped on any subframe needs to adopt different parts of the Gold sequence; when generating the Gold sequence, the seed is initialized only once at the WUS start position (the first subframe of the WUS map), and the Gold sequence with the length corresponding to M subframes, that is, the length of 2 × 132 × M is generated, and the Gold sequence is a sequence composed of 0 and 1. The WUS sequence mapped on each subframe is generated based on a first sequence with the length of 264 intercepted from a Gold sequence, different subframes correspond to different first sequences, and then modulation is carried out, wherein the modulation means that 2 bits are modulated into 1 complex number, for example, 00,01,10 and 11 can be modulated into +1, -1, + j and j respectively; the first sequence after modulation is 132 a in length.

For any subframe, generating a WUS sequence mapped on the subframe according to a ZC sequence and a first sequence after modulation corresponding to the subframe, for example, performing sequence dot multiplication on the ZC sequence and the first sequence to generate the WUS sequence with the length of 132 mapped on the subframe; the sequence is mapped to the last 11 OFDM symbols of the subframe.

As shown in fig. 1C, in the GB deployment mode and the SA deployment mode, for any subframe, the WUS sequence mapped on the last 11 OFDM symbols may be generated according to the WUS sequence generation manner in the IB deployment mode, and then the WU sequences mapped on the 7 th, 8 th, and 9 th OFDM symbols may be copied to the first 3 OFDM symbols of the subframe.

Currently, there are two ways for a network device to send a WUS to a terminal device:

first, terminal devices corresponding to the same PO are not grouped, and WUS for each terminal device is the same.

For example, a PO of 100 terminal devices (numbered 0-99) is the same PO, and if the network device needs to wake up the terminal device numbered 0, the network device sends a WUS before the PO; and all 100 terminal devices will detect WUS before PO. If all 100 terminal devices detect WUS, all 100 terminal devices will wake up. However, in fact, the terminal devices numbered 1 to 99 do not need to be woken up, so that the 99 terminal devices do not need to be woken up, and thus a "false alarm" occurs, so that the 99 terminal devices generate redundant power consumption.

In order to reduce the power consumption of the terminal device, a second WUS transmission scheme is proposed.

And the second type is to group the terminal devices, and each group of terminal devices corresponds to a specific WUS.

Assuming that 100 terminal equipments (numbered as UE 0-99) belong to the same PO, the 100 terminal equipments can be divided into 4 groups, for example, UE 0-24 belong to group 0, UE 25-49 belong to group 1, UE 50-74 belong to group 2, and UE 75-99 belong to group 3.

4 group-specific WUS may be introduced, one for each group, e.g., group n for WUS # n.

If the network device needs to wake up UE 0, the network device may send a wake-up signal #0 corresponding to group 0 before PO;

for 25 terminal devices in group 0, if the terminal devices detect the wake-up signal #0, the terminal devices are woken up; for 75 UEs in

groups

1,2, and 3, since these terminal devices only detect the wake-up signal corresponding to the group to which they belong, the wake-up signal #0 corresponding to group 0 will not be detected, and thus will not be woken up.

It should be noted that a public WUS (common WUS) may be provided to wake up all terminal devices, and any terminal device that detects a public WUS on the PO may be woken up.

In the case of grouping terminal devices, the total number of groups is G, and in the process of generating WUS specific to each group, the length of the Gold sequence used is 264 × G × M, different groups cut different segments of the Gold sequence, and the cut length is 264 × M. As shown in fig. 1D, different segments of the Gold sequence need to be cut during generation of WUS specific to different groups, and in fig. 1D, the segments are cut in order according to the number of the groups, for example, group 1 cuts a sequence with a first segment length of 264 × M in the Gold sequence, and group 2 cuts a sequence with a 2 nd segment length of 264 × M in the Gold sequence.

It should be noted that the truncation shown in fig. 1D is only an example, and in a specific implementation, other preset order truncation may be adopted, but the length of truncation and the Gold sequence are not changed.

And secondly, detecting the WUS by the terminal equipment.

Because the terminal device cannot know M, the terminal device needs to perform blind detection when detecting the WUS, that is, possible values of M are detected respectively until the detection is successful.

Taking L as 128 as an example, the set of possible values for M is {1,2,4, …,128 }.

The terminal device may assume that M is 1, generate a corresponding local sequence in the same manner as the network device side, perform sequence detection on the received WUS sequence based on the corresponding local sequence, specifically, generate a correlation value according to the corresponding local sequence and the WUS sequence, and determine whether the correlation value exceeds a threshold.

If the correlation value exceeds a threshold value, the WUS sequence is detected, and the detection of the WUS sequence can be stopped; if the correlation value does not exceed the threshold, the terminal device needs to blindly detect the next M value.

When the terminal device assumes that M is 1, the correlation value generated at the time of sequence detection does not exceed the threshold; the terminal device may detect the next possible M value, for example, the terminal device may assume that M is 2, generate a corresponding local sequence in the same manner as on the network device side, perform sequence detection on the received WUS sequence based on the corresponding local sequence, and repeat the sequence detection process when M is 1.

The order of the values of the blind detection M of the terminal device may be in the order from small to large of M, or may be in other ways, and is not limited.

When the terminal device generates a local sequence, the manner adopted is the same as the manner of generating the WUS by the network device, taking the group to which the terminal device belongs as a group 2 as an example, that is, the second manner of sending the WUS by the corresponding network device, when sequence detection is performed on one possible value M, the terminal device generates a Gold sequence with the length of 264 x G M, then intercepts the corresponding sequence with the length of 264 x M in the Gold sequence of the group to which the terminal device belongs, if the manner intercepted by the network device is shown in fig. 1D, the terminal device also correspondingly intercepts the sequence with the length of 264 x M in the Gold sequence, then generates a local sequence specific to the group 2, and performs sequence detection on the received wake-up signal.

Obviously, since the terminal device needs to perform blind detection, if a possible value of M is taken, a Gold sequence with a length of 264 × G × M is generated, different M generate different Gold sequences, and the part intercepted by the terminal device in the Gold sequence is also different, as shown in fig. 1E, when the terminal device performs blind detection on a wake-up signal, the position of the intercepted Gold sequence is shown, where one square represents the corresponding sequence with a length of 264 of the Gold sequence, for example, when M is 1, the nth square intercepted by the terminal device is shown, when M is 2, the terminal device intercepts the (n +1, n + 2) squares (n-1, n +1 are shown as the terminal devices in group 1); when M is different, the Gold sequences intercepted by the terminal equipment are not related, and further, the generated local sequences are different, namely, for a possible value of M, the terminal equipment needs to adopt the same process to carry out sequence detection, so that the complexity of blind detection is increased, and the power consumption is also increased.

Fig. 2 is a schematic diagram of a network architecture provided in the embodiment of the present application, where the network architecture includes a network device (taking a base station as an example) and a plurality of terminal devices (taking a UE as an example). The application scenario according to the embodiment of the present application may be applicable to an NB-IoT system, and may also be applicable to network architectures of other communication systems, such as a Long Term Evolution LTE (LTE) system, a 5G NR system, a global system for mobile communication (GSM) system, a mobile communication system (UMTS), and a Code Division Multiple Access (CDMA) system, and of course, the application scenario may also be applicable to a communication system including a plurality of terminal devices.

As shown in FIG. 2, the system includes a base station and 6 UEs, UE 1-UE 6. The UEs 1-6 may be terminal devices under the NB-IoT system, such as mobile phones, automobiles, televisions, smart appliances, printers, and the like.

The UEs 1 to 6 may all transmit uplink data to the base station, the base station may receive the uplink data from the UEs 1 to 6, and the base station may also transmit information (e.g., wake-up signal sequences according to the embodiments of the present application) to the UEs 1 to 6, and the UEs 1 to 6 may perform corresponding operations (e.g., sequence detection or wake-up) if receiving the information.

It should be noted that a plurality of UEs may also form one communication system, as shown in fig. 1, UEs 4 to 6 may form one communication system, UE4 and UE6 may transmit data to UE5, and UE5 may transmit wake-up signal sequences to UE4 and UE 6.

As shown in fig. 2, a network device and at least one terminal device may be used to implement the technical solution provided in the embodiment of the present application, and similarly, two terminal devices (e.g., UE5 and UE4) shown in fig. 2 may also be used to implement the technical solution provided in the embodiment of the present application, for convenience of description, in the embodiment of the present application, taking interaction between the network device and the terminal device as an example, a manner of a communication system formed by the terminal devices to implement the technical solution provided in the embodiment of the present application may be referred to in the embodiment of the present application, and only one of the terminal devices needs to be regarded as a device capable of implementing the function of the network device in the embodiment of the present application, which has a similar principle and is not described in detail.

In order to enable terminal devices to save power consumption when performing blind detection on a WUS, an embodiment of the present application provides a wake-up signal sending method, where in a process of generating a wake-up signal sequence, a GOLD sequence used by a first device has a length of 264L (N-1) + 264M, N is a sequence index corresponding to a group to which the terminal device belongs, L is a number of subframes corresponding to a maximum duration of the wake-up signal sequence, M is a number of subframes corresponding to an actual duration of the wake-up signal sequence, L is an integer, M is a positive integer and is less than or equal to L, N is a positive integer greater than 1, and correspondingly, when a second device generates a local sequence, the same manner is also used, the length of the GOLD sequence is 264L (N-1) + 264K, and K is a possible value of M determined by the second device, that is a possible number of subframes corresponding to an actual duration of the wake-up signal sequence (which may also be referred to as a wake-up signal sequence) The number of subframes corresponding to the candidate duration), K is a positive integer and is less than or equal to L, so that when different K are taken, it can be seen that the adopted GOLD sequence always has the same part, and for the same part, the result of sequence detection already performed on the part before can be delayed, and sequence detection is performed only on different parts, so that power consumption can be effectively saved.

The technical features related to the embodiments of the present application are described above, and the technical solutions provided by the embodiments of the present application are described below with reference to the accompanying drawings.

An embodiment of the present application provides a method for sending a wake-up signal, please refer to fig. 3, which is a flowchart of the method. In the following description process, when the method is applied to the network architecture shown in fig. 2, the first device is a network device, and the second device is a terminal device, in implementation, in this embodiment of the present application, the first device and the second device may also be both terminal devices, and when the method is applied to a D2D scenario, the first device may send a wake-up signal sequence to the second device.

Step 301: the network device generates a wake-up signal sequence based on the ZC sequence and the GOLD sequence, where the length of the GOLD sequence is 264 × L (N-1) +264 × M, N is a sequence index corresponding to a group to which the terminal device belongs, L is the number of subframes corresponding to the maximum duration of the wake-up signal sequence, M is the number of subframes corresponding to the actual duration of the wake-up signal sequence, L is a positive integer, M is a positive integer and less than or equal to L, and N is a positive integer greater than 1.

Step 302: the network device sends the wake-up signal sequence to the terminal device, because the number of subframes to which the wake-up signal sequence can be mapped is M, in actual transmission, because some subframes are already mapped with other messages, such as system messages, in order not to affect other messages on the subframes, the wake-up signal sequence may not be mapped on the subframes, that is, in the transmission process, the number of subframes to which the wake-up signal sequence is mapped may be less than M.

Step 303: after the terminal device receives the wake-up signal sequence from the network device, the terminal device generates a local sequence based on the ZC sequence and the GOLD sequence, where the length of the GOLD sequence is 264 × L (N-1) +264 × K, K is the number of subframes corresponding to the candidate duration of the wake-up signal sequence determined by the terminal device, K is any one of M possible values, and K is less than or equal to L.

Step 304: and the terminal equipment performs sequence detection on the wake-up signal sequence based on the local sequence.

Steps 301 to 302 are the process of generating and sending WUS by the network equipment side, and steps 303 to 304 are the process of generating a local sequence and carrying out sequence detection by the terminal equipment side.

The wake-up signal sequence may be used to wake up the terminal device, the terminal device that detects the wake-up signal sequence may wake up, and the wake-up signal sequence may also have other functions, for example, the terminal device may use the wake-up signal to implement downlink synchronization, cell acknowledgement, and the like.

It should be noted that, when the network device generates the wake-up signal sequence, the length of the GOLD sequence used is 264 × L (N-1) +264 × M, N is a sequence index corresponding to the group to which the terminal device belongs, and a setting manner of N.

For example, the network device may generate a reference GOLD sequence with a length of G × L × 264 in advance, the network device may intercept a GOLD sequence required for generating the wake-up signal sequence from the reference GOLD sequence, and N may characterize a sequence index of the group to which the terminal device belongs in the reference GOLD sequence.

As shown in fig. 4, a schematic diagram of GOLD sequences that need to be cut out from the reference GOLD sequence when WUS specific to different clusters are generated is shown in fig. 1E, where the GOLD sequences are cut out in order of cluster number, for example, cluster 1 cuts out a sequence with a length of 264 × M from the reference GOLD sequence, cluster 2 cuts out a sequence with a length of 264 × L +264 × M from the reference GOLD sequence (N is 2), and cluster 3 cuts out a sequence with a length of 264 × L × 2+264 × M from the reference GOLD sequence (N is 3). In this case, N is the same as the group number.

The method of determining a Gold sequence by referring to a Gold sequence is described above by way of example only, and the embodiment of the present application is not limited to the length of the Gold sequence and the position of the Gold sequence in the Gold sequence to be truncated, as long as the truncated length satisfies 264 × L (N-1) +264 × M.

N may be set to a value that is the same as the group number, or may be set to a value that has a correspondence relationship with the group index, where N needs to be determined before the network device generates the wake-up signal sequence based on the ZC sequence and the GOLD sequence, and in this case, the network device corresponds to a plurality of terminal devices, where any terminal device belongs to one or more groups, and for any group, the group has one group index, the group index corresponds to one sequence index, one group index may correspond to one sequence index, a plurality of group indexes may each correspond to one sequence index, and one group index may also correspond to a plurality of sequence indexes.

The network device may determine, according to the group index of the group to which the terminal device belongs, the sequence index N corresponding to the group to which the terminal device belongs, based on a correspondence between the group index and the sequence index of the group.

The group index to which the terminal device belongs is used for indicating a group to which the terminal device belongs, for example, the terminal device belongs to a group 1, and the group index of the group to which the terminal device belongs may be set to 1, or may be a value obtained by performing specific operation on 1; the number of the group indexes to which the terminal equipment belongs is not limited in the embodiment of the application, and the group indexes to which the terminal equipment belongs can be multiple because the terminal equipment can belong to multiple different groups at the same time; for example, the terminal devices belong to group 1 and group 2, and the group index of the group to which the terminal device belongs may be two, e.g., set to 1 and 2. The embodiment of the application does not limit the setting mode of the group index, and all the numerical values which can indicate the group to which the terminal equipment belongs can be used as the group index.

The corresponding relationship between the group index g and the sequence index N of the group may be preset, for example, N ═ g +2, and the group index may be a natural number, where the value of N is a positive integer greater than 1.

Note that N may be 1, and when N is 1, the generated WUS sequence is a WUS sequence under the R15 standard, and a terminal device under the R15 standard can detect the WUS sequence, but under the R16 standard, N may be defined to be not 1, and thus a terminal device under the R16 standard does not detect the WUS sequence, so that WUS sequences under the R15 standard and the R16 standard can be distinguished. N can also be 2, when N is 2, the generated WUS sequence can be a public WUS and is used for awakening all terminal devices in the group; generally, when all terminal devices need to detect a common WUS and N is 2, the length of the adopted Gold sequence is short, so that power consumption can be effectively saved.

In the embodiments of the present application, the number of sequence indexes corresponding to a group to which a terminal device belongs is not limited, and for example, in the case where detection of a public WUS is required, the sequence indexes corresponding to the group to which the terminal device belongs may include a sequence index required for generating the public WUS and a sequence index required for generating a WUS unique to the group to which the terminal device belongs. Taking N +2 as an example, the sequence indexes corresponding to the group 2 are 1 and 3, where 1 is a sequence index required to generate a common WUS and 3 is a sequence index required to generate a group-specific WUS to which the terminal device belongs.

When the network device generates the wake-up signal sequence based on the ZC sequence and the GOLD sequence, two ways may be adopted, which are described below:

firstly, the network device intercepts a target sequence from a GOLD sequence, and then generates the wake-up signal sequence based on a ZC sequence and the target sequence.

The network device may intercept the target sequence from the GOLD sequence by a length of M × 264, and may form the target sequence from the 264 × L (N-1) +1 bit to the 264 × L (N-1) +264 × M bit in the GOLD sequence.

It should be noted that the positions of the elements in the GOLD sequence are ordered from 1, that is, the first bit of the GOLD sequence is the first bit.

When N is 2, the network device may configure bits 264 × L +1 to 264 × L +264 × M in the GOLD sequence as a target sequence; when N is 3, the network device may configure bits 264 × L × 2+1 to 264 × L × 2+264 × M in the GOLD sequence as the target sequence.

After the target sequence is intercepted, since the GOLD sequence is a sequence formed by 0 and 1, and the ZC sequence is a complex sequence, in order to realize the sequence dot product, the network device may convert the target sequence into the complex sequence, for example, two adjacent elements in the target sequence may be converted into one complex number, or may convert into the complex sequence in another manner, which is not limited in the embodiment of the present application.

And then, generating a wake-up signal sequence according to the ZC sequence and the complex sequence converted from the target sequence, specifically, performing sequence dot multiplication on the ZC sequence and the complex sequence converted from the target sequence to generate the wake-up signal sequence.

In addition to the ZC sequence and the GOLD sequence, other sequences may be introduced to generate the wake-up signal sequence, for example, the wake-up signal sequence may be generated based on the ZC sequence, the GOLD sequence and the first sequence.

For example, when the network device generates the wake-up signal sequence, the wake-up signal sequence may satisfy a certain formula:

wherein, w_N(m) is a wake-up signal sequence, w_N(M) can be regarded as a wake-up signal sequence mapped on one of the subframes, x is 0,1, …, M-1, M is 0,1, …,131,

is a ZC sequence and is a sequence of ZCs,

wherein

For cell identification, n-m mod132,

is a sequence of a GOLD sequence,

for the intercepted target sequence in the GOLD sequence, N is the sequence index corresponding to the group to which the second device belongs, N_fThe frame number n of the first frame where the first paging opportunity PO corresponding to the wake-up signal sequence is located_sIs the time slot number of the first time slot where the first PO corresponding to the wake-up signal sequence is located.

And secondly, the network equipment generates a candidate wake-up signal sequence based on the ZC sequence and the GOLD sequence, and then intercepts the wake-up signal sequence from the candidate wake-up signal sequence.

Since the GOLD sequence is a sequence formed by 0 and 1, the ZC sequence is a complex sequence, and in order to realize sequence multiplication, the network device may convert the GOLD sequence into the complex sequence, and then generate a candidate wake-up signal sequence according to the ZC sequence and the complex sequence converted from the GOLD sequence, and specifically, perform sequence multiplication on the ZC sequence and the complex sequence converted from the target sequence to generate a candidate wake-up signal sequence, where the length of the candidate wake-up signal sequence is 132 × L (N-1) +132 × M.

For example, the candidate wake-up signal sequence may satisfy a formula similar to that in the first embodiment, which is not described herein again, but is different therefrom

Should be 264 x L (N-1) +264 x M in length.

In the process of generating the candidate wake-up signal sequence, in addition to the ZC sequence and the GOLD sequence, other sequences may be introduced, for example, the candidate wake-up signal sequence may be generated based on the ZC sequence, the GOLD sequence and the second sequence.

And the network equipment intercepts the 132 th position from L (N-1) +1 to 132 th position from L (N-1) +132 th position from M of the candidate wake-up signal sequence as a wake-up signal sequence.

After the network device generates the wake-up signal sequence, the network device sends the wake-up signal sequence to the terminal device, and the terminal device needs to detect the wake-up signal sequence, and the following describes a manner for the terminal device to detect the wake-up signal sequence:

when the terminal device generates the local sequence, the length of the GOLD sequence used is 264 × L (N-1) +264 × K, where N is a sequence index corresponding to the group to which the terminal device belongs.

The setting manner of N may refer to the foregoing description, and details are not described here, and the manner in which the terminal device determines N and obtains the GOLD sequence is the same as the manner in which the network device determines N and obtains the GOLD sequence, which is only different in execution main body, and details are not described here.

It should be noted that, because the terminal device cannot know the value of M, when the terminal device performs WUS detection, the terminal device needs to generate a local sequence based on some possible values of M, where K represents any value in the set of possible values of M corresponding to L.

Similar to the network device side, when the terminal device generates the local sequence based on the ZC sequence and the GOLD sequence, two ways may be adopted, which are introduced below:

in the first mode, the terminal device firstly intercepts a target sequence from a GOLD sequence, and then generates the local sequence based on a ZC sequence and the target sequence.

The terminal device cuts the length of the target sequence from the GOLD sequence to K × 264, and may form the target sequence from the 264 × L (N-1) +1 bit to the 264 × L (N-1) +264 × K bit in the GOLD sequence.

When N is 2, the terminal device may form a target sequence from bit 264 × L +1 to bit 264 × L +264 × K in the GOLD sequence; when N is 3, the terminal device may configure bits 264 × L × 2+1 to 264 × L × 2+264 × K in the GOLD sequence as the target sequence.

After the target sequence is intercepted, since the GOLD sequence is a sequence formed by 0 and 1, the ZC sequence is a complex sequence, in order to realize sequence multiplication, the terminal device may convert the target sequence into the complex sequence, and then generate a local sequence according to the ZC sequence and the complex sequence converted from the target sequence, and specifically, perform sequence multiplication on the ZC sequence and the complex sequence converted from the target sequence to generate the local sequence.

In addition to the ZC sequence and the GOLD sequence, other sequences may be introduced to generate the local sequence, for example, the local sequence may be generated based on the ZC sequence, the GOLD sequence and the first sequence.

For example, when the terminal device generates the local sequence, the local sequence may satisfy a certain formula:

wherein the content of the first and second substances,w _N(m) is a native sequence, x is 0,1, …, K-1, m is 0,1, …,131,

is a ZC sequence and is a sequence of ZCs,

wherein

Is a cell identity, the cell is the cell where the terminal device is located, n is m mod132,

is a sequence of a GOLD sequence,

And secondly, the terminal equipment generates a candidate sequence based on the ZC sequence and the GOLD sequence, and then intercepts a local sequence from the candidate sequence.

Since the GOLD sequence is a sequence formed by 0 and 1, the ZC sequence is a complex sequence, and in order to realize sequence multiplication, the terminal device may convert the GOLD sequence into the complex sequence, and then generate a candidate sequence based on the ZC sequence and the complex sequence converted from the GOLD sequence, and specifically, perform sequence multiplication on the ZC sequence and the complex sequence converted from the target sequence to generate the candidate sequence, where the length of the candidate sequence is 132 × L (N-1) +132 × K.

For example, the candidate sequence may satisfy the formula similar to the formula in the first mode, which is not described herein again, but the difference is

Should be 264 x L (N-1) +264 x M in length.

In addition to the ZC sequence and GOLD sequence, other sequences may be introduced to generate the candidate sequence, for example, the candidate sequence may be generated based on the ZC sequence, GOLD sequence and the second sequence.

And the terminal device intercepts the 132X L (N-1) +1 bit to the 132X L (N-1) + 132X K bit of the candidate sequence as a local sequence.

When the terminal equipment detects the sequence, the correlation value of the local sequence and the wake-up signal sequence can be determined, and the detection is determined to be successful under the condition that the correlation value exceeds a threshold value; the detection success indicates that the terminal device determines that the wake-up signal sequence is detected or the terminal device determines that the network device sends the wake-up signal sequence, and then the terminal device can enter a wake-up state.

If the correlation value does not exceed the threshold value, the detection is failed, and the terminal device can adopt another K to generate a local sequence and continue to perform sequence detection.

By adopting the manner of the embodiment of the present application, it can be seen that when the terminal device generates the local sequence, the same portion may exist between the used GOLD sequences under different K values, as shown in fig. 5, when the local sequence is generated for the terminal device, the position of the truncated target sequence in the reference GOLD sequence is represented by one square, where the length of the corresponding reference GOLD sequence is 264, for example, when K is 1, the terminal device truncates the nth square as the target sequence, and when K is 2, the terminal device truncates the nth and n +1 squares.

When K is different, there is the relevance between the target sequence of terminal equipment intercepting, when doing sequence detection, the result that K2's sequence detection can utilize the result that K1's sequence detected, only need based on the sequence that n +1 th square represented, do sequence detection can, and then can reduce terminal equipment's consumption.

Based on the same inventive concept as the method embodiment, an embodiment of the present application further provides a communication apparatus for executing a method executed by a network device (or a first device) in the method embodiment, where related features may refer to the method embodiment, and are not described herein again, and as shown in fig. 6, the apparatus includes a processing unit 601 and a sending unit 602:

a processing unit 601, configured to generate a wake-up signal sequence based on the ZC sequence and the GOLD sequence, where the length of the GOLD sequence is 264 × L (N-1) +264 × M, N is a sequence index corresponding to a group to which the second device belongs, L is a number of subframes corresponding to a maximum duration of the wake-up signal sequence, L is a positive integer, M is a number of subframes corresponding to an actual duration of the wake-up signal sequence, M is a positive integer and less than or equal to L, and N is a positive integer greater than 1;

a sending unit 602, configured to send a wake-up signal sequence to the second device.

As a possible implementation manner, when generating the wake-up signal sequence based on the ZC sequence and the GOLD sequence, the processing unit 601 may adopt a manner of generating after truncating, for example, the processing unit 601 may truncate bits 264 × L (N-1) +1 to 264 × L (N-1) +264 × M in the GOLD sequence to form a target sequence; thereafter, a wake-up signal sequence is generated based on the ZC sequence and the target sequence.

As a possible implementation, the processing unit 601 may generate the wake-up signal sequence based on the ZC sequence and the target sequence, and the wake-up signal sequence may be generated according to the ZC sequence and the complex sequence converted from the target sequence.

As a possible implementation manner, the processing unit 601 may generate the wake-up signal sequence based on the ZC sequence and the GOLD sequence by way of truncating after generating the sequence, for example, the processing unit 601 may generate a candidate wake-up signal sequence based on the ZC sequence and the GOLD sequence, where the candidate wake-up signal sequence has a length of 132 × L (N-1) +132 × M; and then, intercepting the 132 th position L (N-1) +1 to the 132 th position L (N-1) +132 th position M of the candidate wake-up signal sequence as a wake-up signal sequence.

As a possible implementation, when generating the candidate wake-up signal sequence based on the ZC sequence and the GOLD sequence, the processing unit 601 may generate the candidate wake-up signal sequence according to the ZC sequence and the complex sequence converted from the GOLD sequence.

As a possible implementation, the wake-up signal sequence may satisfy the following formula:

is a ZC sequence and is a sequence of ZCs,

wherein

For cell identification, n-m mod132,

As a possible implementation manner, the first device may correspond to a plurality of second devices, each of the plurality of second devices belongs to at least one group, each group has a group index, each group index corresponds to one sequence index, and the processing unit 601 may determine, before generating the wake-up signal sequence based on the ZC sequence and the GOLD sequence, the sequence index N corresponding to the group to which the second device belongs according to the group index of the group to which the second device belongs, based on a correspondence between the group index of the group and the sequence index.

Based on the same inventive concept as the method embodiment, an embodiment of the present application further provides a communication apparatus for executing a method executed by a terminal device (or a second device) in the method embodiment, and related features may refer to the method embodiment, which is not described herein again, and as shown in fig. 7, the apparatus includes a receiving unit 701 and a processing unit 702:

a receiving unit 701, configured to receive a wake-up signal sequence from a first device;

a processing unit 702, configured to generate a local sequence based on the ZC sequence and the GOLD sequence, where the length of the GOLD sequence is 264 × L (N-1) +264 × K, N is a sequence index corresponding to a group to which the second device belongs, L is a number of subframes corresponding to a maximum duration of the wake-up signal sequence, L is a positive integer, K is a number of subframes corresponding to a candidate duration of the wake-up signal sequence determined by the second device, K is a positive integer and is less than or equal to L, and N is a positive integer greater than 1; and performing sequence detection on the wake-up signal sequence based on the local sequence.

As a possible implementation manner, when generating the local sequence based on the ZC sequence and the GOLD sequence, the processing unit 702 may adopt a way of generating after truncating, for example, the processing unit 702 may truncate bits 264 × L (N-1) +1 to 264 × L (N-1) +264 × K in the GOLD sequence to form a target sequence; thereafter, a wake-up signal sequence is generated based on the ZC sequence and the target sequence.

As a possible implementation, when generating the local sequence based on the ZC sequence and the target sequence, the processing unit 702 may generate the local sequence from the ZC sequence and the complex sequence converted from the target sequence.

As a possible implementation manner, when generating the local sequence based on the ZC sequence and the GOLD sequence, the processing unit 702 may generate the local sequence first and then truncate the local sequence, for example, the processing unit 702 may generate the candidate sequence first based on the ZC sequence and the GOLD sequence, where the length of the candidate sequence is 132 × L (N-1) +132 × K; and then, cutting the positions from 132X L (N-1) +1 to 132X L (N-1) + 132X K of the candidate sequence as a local sequence.

As a possible implementation, when generating the candidate sequence based on the ZC sequence and the GOLD sequence, the processing unit 702 may generate the candidate sequence according to the ZC sequence and the complex sequence converted from the GOLD sequence.

As a possible implementation, the local sequence may satisfy the following formula:

wherein, w_N(m) is a native sequence, x is 0,1, …, K-1, m is 0,1, …,131,

is a ZC sequence and is a sequence of ZCs,

wherein

For cell identification, n-m mod132,

As a possible implementation manner, when performing sequence detection on the wake-up signal sequence based on the local sequence, the processing unit 702 determines a correlation value between the local sequence and the wake-up signal sequence, and determines that the detection is successful when the correlation value exceeds a threshold; when the correlation value does not exceed the threshold, it is determined that the detection fails, and it may be considered that the first device does not transmit the wake-up signal sequence whose number of subframes is K corresponding to the duration.

As a possible implementation manner, each of the plurality of second devices corresponding to the first device belongs to at least one group, each group has a group index, each group index corresponds to a sequence index, and the processing unit 702 may determine, before generating the local sequence based on the ZC sequence and the GOLD sequence, the sequence index N corresponding to the group to which the second device belongs according to the group index of the group to which the second device belongs, based on a correspondence between the group index and the sequence index of the group.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. The functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

In a simple embodiment, those skilled in the art can appreciate that the terminal devices may all be in the form shown in fig. 8.

The communication device 800 shown in fig. 8 includes at least one processor 801, a memory 802, and optionally a communication interface 803.

The memory 802 may be a volatile memory, such as a random access memory; the memory may also be a non-volatile memory such as, but not limited to, a read-only memory, a flash memory, a Hard Disk Drive (HDD) or solid-state drive (SSD), or the memory 802 may be any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 802 may be a combination of the above.

The specific connection medium between the processor 801 and the memory 802 is not limited in the embodiment of the present application.

The processor 801 may have a data transceiving function, and may be capable of communicating with other devices, and in the apparatus shown in fig. 8, a separate data transceiving module, such as the communication interface 803, may also be provided for transceiving data; the processor 801 may communicate data via the communication interface 803 when communicating with other devices.

When the network device takes the form shown in fig. 8, the processor 801 in fig. 8 may execute the instructions by calling a computer stored in the memory 802, so that the network device may perform the method performed by the network device in any of the above-described method embodiments.

Specifically, the functions/implementation processes of the sending unit and the processing unit in fig. 6 can be implemented by the processor 801 in fig. 8 calling a computer executing instruction stored in the memory 802. Alternatively, the function/implementation procedure of the processing unit in fig. 6 may be implemented by the processor 801 in fig. 8 calling a computer executing instruction stored in the memory 802, and the function/implementation procedure of the transmitting unit in fig. 6 may be implemented by the communication interface 803 in fig. 8.

In a simple embodiment, those skilled in the art can appreciate that the terminal devices may all be in the form shown in fig. 9.

The communication apparatus 900 shown in fig. 9 includes at least one processor 901, a memory 902, and optionally a transceiver 903.

Memory 902 may be a volatile memory, such as a random access memory; the memory may also be a non-volatile memory such as, but not limited to, a read-only memory, a flash memory, a Hard Disk Drive (HDD) or a solid-state drive (SSD), or the memory 902 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 902 may be a combination of the above memories.

The embodiment of the present application does not limit the specific connection medium between the processor 901 and the memory 902.

The processor 901 may have a data transceiving function, and may be capable of communicating with other devices, and in the apparatus as shown in fig. 9, a separate data transceiving module, such as the transceiver 903, may also be provided for transceiving data; the processor 901 may transmit data via the transceiver 903 when communicating with other devices.

When the terminal device adopts the form shown in fig. 9, the processor 901 in fig. 9 may execute the instructions by calling a computer stored in the memory 902, so that the terminal device may execute the method executed by the terminal device in any of the above-described method embodiments.

Specifically, the functions/implementation processes of the receiving unit and the processing unit in fig. 7 can be implemented by the processor 901 in fig. 9 calling a computer executing instruction stored in the memory 902. Alternatively, the functions/implementation procedures of the processing unit in fig. 7 may be implemented by the processor 901 in fig. 9 calling a computer executing instructions stored in the memory 902, and the functions/implementation procedures of the receiving unit in fig. 7 may be implemented by the transceiver 903 in fig. 9.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

A method for sending a wake-up signal, comprising:

the first device generates a wake-up signal sequence based on a ZC sequence and a GOLD sequence, wherein the length of the GOLD sequence is 264 x L (N-1) +264 x M, N is a sequence index corresponding to a group to which the second device belongs, L is the number of subframes corresponding to the maximum duration of the wake-up signal sequence, L is a positive integer, M is the number of subframes corresponding to the actual duration of the wake-up signal sequence, M is a positive integer and less than or equal to L, and N is a positive integer greater than 1;

the first device sends the wake-up signal sequence to the second device.
The method of claim 1, wherein the first device generates a wake-up signal sequence based on a ZC sequence and a GOLD sequence, comprising:

the first device intercepts 264 × L (N-1) +1 bits to 264 × L (N-1) +264 × M bits in the GOLD sequence to form a target sequence;

the first device generates the wake-up signal sequence based on the ZC sequence and the target sequence.
The method of claim 2, wherein the first device generating the wake-up signal sequence based on the ZC sequence and the target sequence comprises:

and the first equipment generates the wake-up signal sequence according to the ZC sequence and the complex sequence converted by the target sequence.
The method of claim 1, wherein the first device generates a wake-up signal sequence based on a ZC sequence and a GOLD sequence, comprising:

the first device generating a candidate wake-up signal sequence based on the ZC sequence and the GOLD sequence, the candidate wake-up signal sequence having a length of 132 × L (N-1) +132 × M;

and the first device intercepts the 132 th position L (N-1) +1 to the 132 th position L (N-1) +132 th position M of the candidate wake-up signal sequence as the wake-up signal sequence.
The method of claim 4, wherein the first device generating a candidate wake-up signal sequence based on the ZC sequence and the GOLD sequence comprises:

and the first equipment generates the candidate wake-up signal sequence according to the ZC sequence and the complex sequence obtained by converting the GOLD sequence.
The method of claim 2, wherein the wake-up signal sequence satisfies the following equation:

wherein, w_N(M) is the wake-up signal sequence, x is 0,1, …, M-1, M is 0,1, …,131,
for the purpose of the ZC sequence, a ZC sequence,
wherein
For cell identification, n-m mod132,

for the GOLD sequence, N is corresponding to the group to which the second device belongsSequence index, n_fThe frame number n of the first frame where the first paging opportunity PO corresponding to the wake-up signal sequence is located_sAnd the time slot number is the time slot number of the first time slot where the first PO corresponding to the wake-up signal sequence is located.
The method according to any of claims 1 to 6, wherein each of the plurality of second devices corresponding to the first device belongs to at least one group, each group has a group index, each group index corresponds to a sequence index, and before the first device generates the wake-up signal sequence based on the ZC sequence and the GOLD sequence, the method further comprises:

and the first equipment determines a sequence index N corresponding to the group to which the second equipment belongs according to the group index of the group to which the second equipment belongs based on the corresponding relation between the group index and the sequence index of the group.
A method for sending a wake-up signal, comprising:

the second device receiving a wake-up signal sequence from the first device;

the second device generates a local sequence based on a ZC sequence and a GOLD sequence, where the length of the GOLD sequence is 264 × L (N-1) +264 × K, N is a sequence index corresponding to a group to which the second device belongs, L is the number of subframes corresponding to the maximum duration of the wake-up signal sequence, L is a positive integer, K is the number of subframes corresponding to the candidate duration of the wake-up signal sequence determined by the second device, K is a positive integer and less than or equal to L, and N is a positive integer greater than 1;

and the second equipment performs sequence detection on the wake-up signal sequence based on the local sequence.
The method of claim 8, wherein the second device generates a local sequence based on the ZC sequence and GOLD sequence, comprising:

the second device intercepts 264 × L (N-1) +1 bits to 264 × L (N-1) +264 × K bits in the GOLD sequence to form a target sequence;

the second device generates the wake-up signal sequence based on the ZC sequence and the target sequence.
The method of claim 9, wherein the second device generates a local sequence based on the ZC sequence and the target sequence, comprising:

and the second equipment generates the local sequence according to the ZC sequence and the complex sequence converted by the target sequence.
The method of claim 8, wherein the second device generates a local sequence based on the ZC sequence and GOLD sequence, comprising:

the second device generates a candidate sequence based on the ZC sequence and the GOLD sequence, the candidate sequence having a length of 132 × L (N-1) +132 × K;

the second device truncates the candidate sequence from position 132 x L (N-1) +1 to position 132 x L (N-1) +132 x K as a native sequence.
The method of claim 11, wherein the second device generates candidate sequences based on the ZC sequence and GOLD sequence, comprising:

and the second equipment generates the candidate sequence according to the ZC sequence and the complex sequence obtained by converting the GOLD sequence.
The method of claim 9, wherein the local sequence satisfies the following equation:

wherein, w_N(m) is the native sequence, x is 0,1, …, K-1, m is 0,1, …,131,
for the purpose of the ZC sequence, a ZC sequence,
wherein
For cell identification, n-m mod132,

for the GOLD sequence, N is the sequence index corresponding to the group to which the second device belongs, N_fThe frame number n of the first frame where the first paging opportunity PO corresponding to the wake-up signal sequence is located_sAnd the time slot number is the time slot number of the first time slot where the first PO corresponding to the wake-up signal sequence is located.
The method of claim 8, wherein the second device performing sequence detection on the wake-up signal sequence based on the local sequence comprises:

the second device determines a correlation value of the local sequence and the wake-up signal sequence, and determines that the detection is successful if the correlation value exceeds a threshold.
The method according to any of claims 8 to 14, wherein each of the plurality of second devices corresponding to the first device belongs to at least one group, each group has a group index, each group index corresponds to a sequence index, and before the second device generates the local sequence based on the ZC sequence and the GOLD sequence, the method further comprises:

and the second equipment determines a sequence index N corresponding to the group to which the second equipment belongs according to the group index of the group to which the second equipment belongs based on the corresponding relation between the group index and the sequence index of the group.
A communication apparatus, comprising a processing unit and a transmitting unit:

the processing unit is configured to generate a wake-up signal sequence based on a ZC sequence and a GOLD sequence, where the length of the GOLD sequence is 264 × L (N-1) +264 × M, N is a sequence index corresponding to a group to which the second device belongs, L is a number of subframes corresponding to a maximum duration of the wake-up signal sequence, L is a positive integer, M is a number of subframes corresponding to an actual duration of the wake-up signal sequence, M is a positive integer and less than or equal to L, and N is a positive integer greater than 1;

the sending unit is configured to send the wake-up signal sequence to the second device.
The apparatus as recited in claim 16, said processing unit to:

intercepting the 264 x L (N-1) +1 site to the 264 x L (N-1) +264 x M site in the GOLD sequence to form a target sequence;

generating the wake-up signal sequence based on the ZC sequence and the target sequence.
The apparatus of claim 17, wherein the processing unit to generate the wake-up signal sequence based on the ZC sequence and the target sequence comprises:

and the wake-up signal sequence is generated according to the ZC sequence and the complex sequence converted by the target sequence.
The apparatus as recited in claim 16, said processing unit to:

generating a candidate wake-up signal sequence based on the ZC sequence and the GOLD sequence, wherein the candidate wake-up signal sequence has a length of 132L (N-1) + 132M;

and intercepting the 132 th position L (N-1) +1 to the 132 th position L (N-1) + 132M of the candidate wake-up signal sequence as the wake-up signal sequence.
The apparatus of claim 19, wherein the processing unit is configured to generate a candidate wake-up signal sequence based on the ZC sequence and the GOLD sequence, comprising:

and the candidate wake-up signal sequence is generated according to the ZC sequence and the complex sequence converted by the GOLD sequence.
The apparatus of claim 17, wherein the wake-up signal sequence satisfies the following equation:

wherein, w_N(M) is the wake-up signal sequence, x is 0,1, …, M-1, M is 0,1, …,131,
for the purpose of the ZC sequence, a ZC sequence,
wherein
For cell identification, n-m mod132,

for the GOLD sequence, N is the sequence index corresponding to the group to which the second device belongs, N_fThe frame number n of the first frame where the first paging opportunity PO corresponding to the wake-up signal sequence is located_sAnd the time slot number is the time slot number of the first time slot where the first PO corresponding to the wake-up signal sequence is located.
The apparatus according to any of claims 16 to 21, wherein each of the plurality of second devices corresponding to the first device belongs to at least one group, each group having a group index, each group index corresponding to a sequence index, the processing unit, prior to generating the wake-up signal sequence based on the ZC sequence and the GOLD sequence, is further configured to:

and determining a sequence index N corresponding to the group to which the second equipment belongs according to the group index of the group to which the second equipment belongs based on the corresponding relation between the group index and the sequence index of the group.
A communication apparatus, comprising a receiving unit, a processing unit:

the receiving unit is used for receiving a wake-up signal sequence from a first device;

the processing unit is configured to generate a local sequence based on a ZC sequence and a GOLD sequence, where the length of the GOLD sequence is 264 × L (N-1) +264 × K, N is a sequence index corresponding to a group to which a second device belongs, L is a number of subframes corresponding to a maximum duration of the wake-up signal sequence, L is a positive integer, K is a number of subframes corresponding to candidate durations of the wake-up signal sequence determined by the second device, K is a positive integer and less than or equal to L, and N is a positive integer greater than 1; and performing sequence detection on the wake-up signal sequence based on the local sequence.
The apparatus as recited in claim 23, said processing unit to:

intercepting the 264 x L (N-1) +1 site to the 264 x L (N-1) +264 x K site in the GOLD sequence to form a target sequence;

generating the wake-up signal sequence based on the ZC sequence and the target sequence.
The apparatus of claim 24, wherein the processing unit configured to generate a local sequence based on the ZC sequence and the target sequence comprises:

and the local sequence is generated according to the ZC sequence and the complex sequence converted from the target sequence.
The apparatus as recited in claim 23, said processing unit to:

generating a candidate sequence based on the ZC sequence and the GOLD sequence, wherein the candidate sequence has a length of 132L (N-1) + 132K;

and (3) cutting the positions from 132X L (N-1) +1 to 132X L (N-1) + 132X K of the candidate sequence as a local sequence.
The apparatus of claim 26, wherein the processing unit configured to generate a candidate sequence based on the ZC sequence and the GOLD sequence comprises:

and the candidate sequence is generated according to the ZC sequence and the complex sequence converted by the GOLD sequence.
The apparatus of claim 24, wherein the local sequence satisfies the following equation:

wherein, w_N(m) is the native sequence, x is 0,1, …, K-1, m is 0,1, …,131,
is a sequence of a ZC being a sequence of a ZC,
wherein
For cell identification, n-m mod132,

for the GOLD sequence, N is the sequence index corresponding to the group to which the second device belongs, N_fThe frame number n of the first frame where the first paging opportunity PO corresponding to the wake-up signal sequence is located_sAnd the time slot number is the time slot number of the first time slot where the first PO corresponding to the wake-up signal sequence is located.
The apparatus as recited in claim 23, said processing unit to:

and determining the correlation value of the local sequence and the wake-up signal sequence, and determining that the detection is successful under the condition that the correlation value exceeds a threshold value.
The apparatus according to any of claims 23-29, wherein each of the plurality of second devices corresponding to the first device belongs to at least one group, each group having a group index, each group index corresponding to a sequence index, the processing unit, prior to generating the local sequence based on the ZC sequence and the GOLD sequence, is further configured to:

and determining a sequence index N corresponding to the group to which the second equipment belongs according to the group index of the group to which the second equipment belongs based on the corresponding relation between the group index and the sequence index of the group.