Communication method and communication device

Abstract

Provided are a communication method and a communication device. The method comprises: a first device determines an OFDM sequence used to generate a first signal, wherein the number of OOK symbols transmitted within one OFDM symbol in the first signal is M, and M is a positive integer.

Description

Communication methods and communication equipment

[0001] This application claims priority to PCT application filed on March 25, 2025, with application number PCT / CN2025 / 084827 and entitled "Communication Method and Communication Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and more specifically, to a communication method and a communication device. Background Technology

[0003] Related technologies superimpose OFDM sequences onto signals (such as OOK signals). In this case, how to determine the OFDM sequence is a problem that needs to be solved. Summary of the Invention

[0004] This application provides a communication method and a communication device. The various aspects covered by this application are described below.

[0005] In a first aspect, a communication method is provided, comprising: a first device determining an OFDM sequence for generating a first signal, wherein the number of OOK symbols transmitted within an OFDM symbol of the first signal is M, where M is a positive integer.

[0006] In a second aspect, a communication device is provided, the communication device being a first device, the communication device comprising: a determining module, configured to determine an OFDM sequence for generating a first signal, wherein the number of OOK symbols transmitted within one OFDM symbol of the first signal is M, where M is a positive integer.

[0007] Thirdly, a communication device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, and the processor is used to invoke the program in the memory and control the transceiver to receive or send signals so that the communication device performs the method as described in the first aspect.

[0008] Fourthly, an apparatus is provided, including a processor for calling a program from a memory to cause the apparatus to perform the method as described in the first aspect.

[0009] Fifthly, a chip is provided, including a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in the first aspect.

[0010] A sixth aspect provides a computer-readable storage medium having a program stored thereon that causes a computer to perform the method as described in the first aspect.

[0011] A seventh aspect provides a computer program product, including a program that causes a computer to perform the method as described in the first aspect.

[0012] Eighthly, a computer program is provided that causes a computer to perform the method as described in the first aspect. Attached Figure Description

[0013] Figure 1 is an example architecture diagram of a wireless communication system to which embodiments of this application can be applied.

[0014] Figure 2 is a schematic flowchart of the communication method provided in an embodiment of this application.

[0015] Figure 3 is a schematic diagram of the structure of the communication device provided in the embodiment of this application.

[0016] Figure 4 is a schematic diagram of a device applicable to embodiments of this application. Detailed Implementation

[0017] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0018] Communication system

[0019] The technical solutions of this application embodiment can be applied to various communication systems. For example, the embodiments of this application can be applied to Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A), New Radio (NR), evolution systems of NR, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), and 5th-generation (5G) systems. The embodiments of this application can also be applied to other communication systems, such as 6th-generation (6G) mobile communication systems, or future communication systems such as satellite communication systems.

[0020] Traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, communication systems can support not only traditional cellular communication but also one or more other types of communication. For example, a communication system can support one or more of the following communication methods: device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), enhanced machine-type communication (eMTC), vehicle-to-vehicle (V2V) communication, and vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to communication systems that support the above-mentioned communication methods.

[0021] The communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, and standalone (SA) network deployment scenarios.

[0022] The communication system in this application embodiment can be applied to unlicensed spectrum. This unlicensed spectrum can also be considered a shared spectrum. Alternatively, the communication system in this application embodiment can also be applied to licensed spectrum. This licensed spectrum can also be considered a dedicated spectrum.

[0023] The technical solutions of this application embodiment can be applied to various Internet of Things (IoT) communication systems. For example, this technical solution can be applied to narrowband Internet of Things (NB-IoT) communication systems. As another example, this technical solution can be applied to ambient IoT (AIoT) communication systems.

[0024] Figure 1 illustrates an example system architecture of a communication system 100 applicable to embodiments of this application. The communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 can provide network coverage for a specific geographical area and can communicate with the terminal device 120 located within that coverage area. The terminal device 120 can access a network (such as a wireless network) through the network device 110. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity; this embodiment of the application does not limit this.

[0025] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the terminal device can act as a base station. For example, the terminal device can act as a scheduling entity, providing sidelink signals between terminal devices in vehicle-to-everything (V2X) or device-to-device (D2D) systems. For instance, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through base stations.

[0026] In some embodiments, the terminal device may also be a device in AIoT (such as a reader) to meet the needs of certain scenarios.

[0027] The network device in this application embodiment can also be an access network device or a radio access network device, such as a base station. The network device in this application embodiment can refer to a radio access network (RAN) node or device that connects a terminal device to a wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master station (MeNB), secondary station (SeNB), multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar entities, or combinations thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), V2X, and M2M communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0028] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0029] In some deployments, the network device in this application embodiment may refer to a CU or a DU; or, the network device may include both a CU and a DU. The gNB may also include an AAU.

[0030] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0031] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform such as a cloud platform.

[0032] Figure 1 illustrates an exemplary network device 110 and two terminal devices 120. Optionally, the communication system 100 may include multiple network devices 110, and the communication system 100 may also include other numbers of terminal devices 120.

[0033] It should be understood that devices with communication functions in the network / system of this application embodiment can be referred to as communication devices. Taking the communication system 100 shown in FIG1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 can be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities. This application embodiment does not limit this.

[0034] LP-WUS / WUR Standardization Work Content

[0035] In the 3GPP R18 research project, further energy-saving measures for terminals were considered. The research introduced LP-WUR and designed an LP-WUS signal. The LP-WUR listens for the LP-WUS signal, and when a wake-up signal from a network device is received, the LP-WUR wakes up the main receiver. Specifically, when using LP-WUR to listen for the wake-up signal, the MR (main receiver) can be in an extremely low-power state—Ultra Deep Sleep—thus achieving overall energy savings for the terminal.

[0036] In Release 18 (R18), 3GPP studied LP-WUS / WUR and published research report TR 38.869. In 3GPP Release 19, LP-WUS / WUR was standardized, and the overall standardization content is as follows:

[0037] Standardize a general LP-WUS design (RAN1, RAN4) that can be applied to both IDLE / INACTIVE and CONNECTED states.

[0038] Standardized LP-WUS signals based on OOK (OOK-1 and / or OOK-4) can have OFDM sequences superimposed on the OOK symbols.

[0039] The design of LP-WUS should ensure that, in the IDLE / INACTIVE state, regardless of the receiver design used by the LP-WUS, the LP-WUS transmits the same information. Additionally, OFDM sequences can also carry information.

[0040] LP-WUS at least supports duty-cycled monitoring.

[0041] For IDLE / INACTIVE state

[0042] The standardized LP-WUS triggering process and configuration for listening to paging messages includes at least: "Configuration", "Subgroups", and "Conditions for entering / exiting LP-WUS listening" (RAN2, RAN1, RAN3, RAN4).

[0043] An LP-SS with a standardization period of Yms for LP-WUR can be used for synchronization and / or RRM (RAN1, RAN4) of the serving cell.

[0044] -LP-SS is based on OOK-1 and / or OOK-4 waveforms, and OFDM sequences can be superimposed on OOK symbols with or without superimposing. In WI, the option to superimpose OFDM sequences on LP-SS is selected.

[0045] Note: For LP-WURs that can receive existing PSS / SSS signals, the existing PSS / SSS signals can be used in place of LP-SS for synchronization and RRM.

[0046] The value of -Y needs to be determined during the WI phase. 320m can be used as an initial value.

[0047] Further standardization of RRM relaxation is performed on the UE MR measurements in the serving cell and neighboring cells. The RRM measurement of the UE serving cell can be devolved from MR to LP-WUR, including the necessary condition design (RAN4, RAN2).

[0048] For the CONNECTED state, the standardized LP-WUS triggers the UE MR to perform PDCCH listening, including the activation and deactivation of LP-WUS (RAN2, RAN1).

[0049] TU adjustments for RAN2 were considered at RAN#105 meeting.

[0050] Note: In CONNECTED state, the UE MR will not enter ultra-deep sleep state; UE RR / RLM / BFD / CSI measurements are performed through MR.

[0051] Note: The coverage performance of LP-WUS and LP-SS is similar to that of PUSCH msg3.

[0052] The priority of LP-WUS signal optimization design in IDLE / INACTIVE state is higher than that in CONNECTED state.

[0053] LP-WUS / WUR Partial Conference Conclusions

[0054] During the 3GPP standardization organization's meeting, a preliminary conclusion was reached regarding the LP-WUS coding method, the main conclusions of which are as follows.

[0055] Consensus reached [RAN1#118bis]

[0056] If the superimposed OFDM sequences do not carry information:

[0057] Option 1: There is an overlay sequence on each OOK "on" symbol.

[0058] Note 1: Multiple superimposed OFDM sequences are specified.

[0059] Note 2: gNB can configure different overlay OFDM sequences for different cells.

[0060] Consensus reached [RAN1#119]

[0061] The existing consensus is updated as follows:

[0062] If the superimposed OFDM sequences carry information, option 2 is supported:

[0063] Option 2: Select one sequence from multiple candidate stacked OFDM sequences at each OOK "on" symbol, and the OFDM-based LP-WUR obtains LP-WUS information at least through the stacked OFDM sequences. Consider the following two sub-options for potential downselection.

[0064] Option 2-2: The superimposed OFDM sequence carries all the information bits of LP-WUS. LP-WUS based on OFDM can obtain all information bits through the superimposed OFDM sequence.

[0065] Further research is needed to determine how the (FFS) information bits are carried through superimposed OFDM sequences.

[0066] Note: The superimposed OFDM sequence on each OOK "on" symbol may vary depending on the information bits to be carried in LP-WUS.

[0067] Consensus reached [RAN1#120]

[0068] For idle mode, the maximum number of candidate overlay sequences carrying LP-WUS information per OOK “on” chip per cell:

[0069] Supports a maximum of 16 candidate overlay sequences when M=1;

[0070] It supports a maximum of 8 candidate stacking sequences when M=2.

[0071] For all candidate stacking sequences on OOK “open” chips of LP-WUS, the maximum number of root sequences specified in the specification is [Further investigation needed (FFS): X]. Further investigation is needed (FFS) to determine whether different M values ​​can have different numbers of root sequences.

[0072] Further research is needed (FFS): The overlay sequence applicable to the UE shall not exceed two on each OOK “on” chip.

[0073] Consensus reached [RAN1#120]

[0074] Proposal 4.3-1: Update the consensus conclusion in RAN1#118bis as follows:

[0075] Consistent conclusion

[0076] Supports LP-SS stacked OFDM sequences:

[0077] LP-SS reuses the overlay OFDM sequence specified for LP-WUS. The design of the overlay OFDM sequence specified for LP-WUS is not intended for the synchronization and radio resource management (RRM) measurement performance of the overlay OFDM sequence based on LP-SS.

[0078] Applicable to OOK-1 and OOK-4.

[0079] Whether to use a specified overlay OFDM sequence for LP-SS transmission is configurable.

[0080] Only applicable to OOK-1.

[0081] From the perspective of RAN1, there is no intention to introduce new RAN4-specific requirements for superimposed sequences.

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[0109] According to the current 3GPP meeting conclusions, OFDM sequences will be added to OOK-on symbols in both LP-WUS and LP-SS signals. OFDM sequences offer gain in terms of spectrum flattening. Furthermore, OFDM sequences can also be used to carry wake-up information for LP-WUS.

[0110] Currently, there are two OFDM sequence designs for LP-WUS:

[0111] -Design 1: The OFDM sequence is not used to carry LP-WUS wake-up indication information;

[0112] -Design 2: The OFDM sequence is used to carry LP-WUS wake-up indication information;

[0113] When M=1, the maximum number of candidate OFDM sequences transmitted on each OOK-on symbol is 16;

[0114] When M=2, the maximum number of candidate OFDM sequences transmitted on each OOK-on symbol is 8;

[0115] When M=4, the maximum number of candidate OFDM sequences transmitted on each OOK-on symbol is 4;

[0116] The value of M represents the number of OOK symbols that can be transmitted within an OFDM symbol.

[0117] Currently, for LP-SS, there are two OFDM sequence configurations depending on the value of M:

[0118] -M=1 allows configuration to either reuse the overlaid OFDM sequence designed for LP-WUS, or not use the overlaid OFDM sequence designed for LP-WUS.

[0119] -M=2,4, always use overlaid OFDM sequences designed for LP-WUS;

[0120] Furthermore, the following conclusions were reached regarding the generation method of OFDM sequences.

[0121] Consensus reached [RAN1#119]

[0122] For a time-domain stacked OFDM sequence, the sequence is generated based on the following formula:

[0123] ●M=1,B ZC It is less than L ZC The largest prime number, L ZC It is the length of the superimposed OFDM sequences.

[0124] ●The basic superposition sequence s(n) is obtained by extending X q Generated:

[0125] s(n)=X q (nmod B ZC ), n=0,…,L ZC ―1;

[0126] ●If a cyclic shift is applied to the underlying superimposed OFDM sequence, then C v Indicates a potential cyclic shift:

[0127] s′(n)=X q ((n+C v )mod B ZC ), n=0,…,L ZC ―1;

[0128] ●M = 2, 4, B ZC Choose from the following options:

[0129] ○Alt1:B ZC It is less than L ZC The largest prime number, L ZC It is the length of the superimposed OFDM sequences.

[0130] ■The basic superposition sequence s(n) is generated by extending Xq:

[0131] s(n)=X q (nmod B ZC ), n=0,…,L ZC ―1;

[0132] ■If a cyclic shift is applied to the underlying superimposed OFDM sequence, then C v Represents a potential cyclic shift: s′(n) = X q ((n+C v )mod B ZC ), n=0,…,L ZC ―1;

[0133] ■Note: This does not exclude any pulse shaping schemes (if any).

[0134] ○Alt2:B ZC It is less than or equal to L ZC —The largest prime number in G, L ZC It is the length of the superimposed OFDM sequences.

[0135] ■The basic superposition sequence is obtained by X q The zeros are generated by inserting zeros before and / or after the given number of zeros, and the total number of zeros is L. ZC ―B ZC .

[0136] ■For example: s(n)=[0,…,0,X q (0),…,X q (B ZC ―1),0,…0],n=0,…,L ZC ―1

[0137] ■C v Indicates a potential cyclic shift:

[0138] ■For example: s′(n)=[0,…,0,Y q (0),…,Y q (B ZC ―1),0,…0],n=0,…,L ZC ―1

[0139] ■Among them, Y q (j)=X q ((j+C v )mod B ZC ),j=0,…,B ZC ―1

[0140] ■ The value of G in FFS (to be further studied), and G>0.

[0141] ●FFS (to be further investigated) is used to generate the root sequence q and / or cyclic shift C of candidate sequences. v The value (if applicable).

[0142] ●Does the FFS (to be further investigated) need to be modified to handle intra-cell / inter-cell interference?

[0143] ●Note: The superimposed OFDM sequences in the time domain are based on the ZC sequences with the potential modifications described above.

[0144] ●The above takes precedence over any previous RAN1 consensus conclusions / working assumptions.

[0145] Consensus reached [RAN1#120]

[0146] At least for M>1, for the length of the stacked OFDM sequence, the following is supported:

[0147] ●Alt2: LZC = 12 × MX

[0148] ●Note: X is the number of RBs in the LP-WUS / LP-SS bandwidth (excluding protection RBs).

[0149] Consensus reached [RAN1#120]

[0150] For M = 2, 4, B ZC It is less than L ZC The largest prime number, L ZC It is the length of the superimposed OFDM sequences.

[0151] ●The basic superposition sequence s(n) is generated by extending Xq: s(n) = Xq q (n mod B ZC ), n=0,…,L ZC -1

[0152] ● If a cyclic shift (CS) is applied to the underlying superimposed OFDM sequence, then Cv represents the potential cyclic shift: s'(n) = X q ((n+C V )mod B ZC ), n=0,…,L ZC -1

[0153] ●Note: This does not exclude any pulse shaping schemes (if any).

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[0185] Regarding the frequency domain resources X of LP-WUS and LP-SS, the following conclusions were reached:

[0186] Consensus reached [RAN1#117]

[0187] From RAN1's ​​perspective, it supports X PRBs (Physical Resource Blocks) for LP-WUS (Low Power Wake-up Signal) and LP-SS (Low Power Synchronization Signal), with a subcarrier spacing of 30kHz (excluding PRBs with blank guard bands), suitable for channel bandwidths equal to or greater than 5MHz.

[0188] X = 11 PRBs

[0189] The number of PRBs in the 15kHz subcarrier spacing of the (FFS) needs further investigation.

[0190] Further investigation is needed to determine whether an additional number of PRBs are required for LP-SS and LP-WUS, applicable to channel bandwidths equal to or less than 5 MHz.

[0191] FFS: Does the above apply to FR2 (band range 2)?

[0192] Consensus reached [RAN1#118bis]

[0193] From RAN1's ​​perspective, it supports X=11 PRBs for LP-WUS and LP-SS, with a subcarrier spacing of 15kHz (excluding PRBs with blank guard bands), and is suitable for channel bandwidths equal to or greater than 5MHz.

[0194] Consensus reached [RAN1#118bis]

[0195] From the perspective of RAN1, it supports X=11 PRBs for LP-WUS and LP-SS, with subcarrier spacing of 60kHz and 120kHz, and is suitable for FR2.

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[0207] Related technologies often superimpose OFDM sequences onto signals (such as OOK signals). In this case, determining the OFDM sequence is a problem that needs to be solved. For example, as described earlier, both LP-WUS and LP-SS need to support the transmission of OFDM sequences. Here, the OFDM sequence refers to the OFDM sequence superimposed on OOK-on. However, there is currently no clear method for determining the specific OFDM sequence used in LP-WUS and LP-SS signals. A method for determining the OFDM sequence for LP-WUS and LP-SS is urgently needed for OFDM sequence generation.

[0208] To address the aforementioned issues, the embodiments of this application will be described in detail below with reference to Figure 2.

[0209] Referring to Figure 2, in step S210, the first device determines the OFDM sequence for generating the first signal. The number of OOK symbols transmitted within one OFDM symbol of the first signal is M, where M is a positive integer.

[0210] In some embodiments, the OFDM sequence can be superimposed onto the OOK-on symbol in the OOK symbol.

[0211] In some embodiments, the number of root sequences corresponding to the OFDM sequence may be the same or different for different values ​​of M.

[0212] In some embodiments, for the same value of M, different root sequences of the OFDM sequence have the same or different numbers of cyclic shifts.

[0213] In some embodiments, the cyclic shift step size corresponding to the OFDM sequence may be the same or different for different values ​​of M.

[0214] In some embodiments, the first signal includes LP-WUS and / or LP-SS.

[0215] In some embodiments, the first device is a terminal device or a network device.

[0216] The embodiments of this application will be illustrated in more detail below, taking the first signal as LP-WUS and / or LP-SS and the OFDM sequence as an OFDM sequence with OOK-on symbols superimposed on LP-WUS and / or LP-SS.

[0217] This application proposes a method for determining OFDM sequences superimposed on OOK-on symbols using LP-WUS and LP-SS.

[0218] For LP-WUS and LP-SS, the superimposed OFDM sequences can be determined as follows:

[0219] The underlying ZC sequence is directly extended to a superimposed OFDM sequence s(n) without using cyclic shift:

[0220] s(n)=X q (n mod B ZC ), n=0,…,L ZC ―1

[0221] q is the root for generating the ZC sequence;

[0222] L ZC =12*X / M, representing the length of the superimposed OFDM sequences. X is the number of frequency domain PRBs allocated for LP-WUS / LP-SS, and M is the number of OOK symbols within an OFDM symbol configured for LP-WUS / LP-SS. Currently, in the current standard version, X = 11 PRBs has been agreed upon, and M can take values ​​of 1, 2, or 4.

[0223] B ZC This represents the length of the basic ZC sequence, which is... <L ZC The largest prime number (or prime number).

[0224] If the basic ZC sequence is extended using cyclic shift, the superimposed OFDM sequence s(n) is obtained: s′(n)=X q ((n+C v )mod B ZC ), n=0,…,L ZC ―1

[0225] Cv This indicates the number of cyclic shifts.

[0226] As can be seen, under a given M value configuration, the length of the OFDM sequence itself is determined. If the root and cyclic shift are further determined, an OFDM sequence can be determined.

[0227] Therefore, the problem in determining the OFDM sequences for LP-WUS and LP-SS lies in determining the root and cyclic shift.

[0228] For LP-WUS, different values ​​of M correspond to different OFDM sequence lengths and different numbers of candidate OFDM sequences. Therefore, determining the candidate OFDM sequence for each M value solely through network device indications requires indicating multiple combinations of root and Cv parameters, which is clearly a cumbersome approach. It is entirely possible to predefine a set of criteria to determine the OFDM sequence by indicating key parameters.

[0229] Based on existing conclusions, for different values ​​of M, Lzc and Bzc correspond as follows (X = 11PRB).

[0230] Example 1-1: Different M values ​​have the same number of roots; different roots with the same M value have the same number of Cv; different M values ​​use the same cyclic shift step size Ncs;

[0231] For different M value configurations, using the same number of roots and the same cyclic shift step size Ncs, determine the cyclic shift C.

[0232] For the same M value configuration, when generating OFDM sequences, if the number of roots used is greater than 1, different roots have the same number of Cv.

[0233] ■Regarding LP-WUS

[0234] When the OFDM sequence carries wake-up indication information

[0235] For a given M value configuration, network devices and terminal devices can determine the OFDM sequence based on root and Cv. Each root can be combined with N. M / R M Each cyclic shift value Cv generates N. M / R M OFDM sequences. Among them, R M N represents the number of roots that can be used under a given M value configuration; M This indicates the number of candidate OFDM sequences superimposed on each OOK-on symbol under a given M value configuration.

[0236] The superimposed OFDM sequences xu,v(n) can be determined in the following way: x u,v (n)=x u ((n+C v )mod B ZC ), n=0,…,L ZC ―1

[0237] Where Bzc represents the length of the base ZC sequence; Lzc represents the length of the superimposed OFDM sequence; u represents the root value used when generating the base ZC sequence; C v This represents the cyclic shift value used when expanding the base ZC sequence to obtain the OFDM sequence.

[0238] The value of the cyclic shift Cv is related to the following factors:

[0239] -Ncs: The step size between two adjacent Cvs among multiple Cvs associated with a root;

[0240] -R M The number of roots that can be used under a given M value configuration.

[0241] -N M The number of candidate OFDM sequences superimposed on each OOK-on symbol under a given M value configuration.

[0242] -Whether LP-WUS carries wake-up indication information via superimposed OFDM sequences; (optional)

[0243] The cyclic shift value Cv has the following relationship;

[0244] C V =v*N CS v = 0, 1, ..., N M / R M ―1

[0245] N in the expression M / R M It can be used To replace it. The same rounding down process can be used in the following text.

[0246] Within the same cell, the same cyclic shift step size can be used for different M-value configurations. That is, Ncs remains the same for different M-value configurations.

[0247] Considering that when M=4, there are at most 4 candidate OFDM sequences, a preferred approach is to use 4 different roots to generate 4 candidate OFDM sequences.

[0248] Based on this, we can also consider four roots to generate candidate OFDM sequences for M=1 and M=2.

[0249] In other words, for different values ​​of M, four roots are used to generate candidate OFDM sequences. Specifically, when M=1, four roots are used, with each root generating at most one OFDM sequence; when M=2, four roots are used, with each root generating at most two OFDM sequences; and when M=4, four roots are used, with each root generating at most four OFDM sequences.

[0250] The above formula becomes:

[0251] Where, N M This indicates the number of candidate OFDM sequences superimposed on an OOK-on symbol when M is configured. For example, when M=1, N M =4; when M=2, N M =8; when M=2, N M =16;

[0252] Alternatively, Cv under different M value configurations can be presented in tabular form.

[0253] Furthermore, Ncs can be set to 32, which allows ZC sequences of lengths 31, 61, and 131 to take 1, 2, and 4 Cv values ​​under each root, respectively, satisfying the maximum number of sequences for different M values, i.e.:

[0254] That is:

[0255] For M=1, when the number of candidate OFDM sequences superimposed on an OOK-on symbol is 16, C V =0,32,64,96;

[0256] For M=2, when the number of candidate OFDM sequences superimposed on an OOK-on symbol is 8, C V =0.32;

[0257] For M=4, when the number of candidate OFDM sequences superimposed on an OOK-on symbol is 4, C V =0;

[0258] Alternatively, Cv under different M value configurations can be presented in tabular form.

[0259] In some implementations, for a given value of M, it is not always necessary to consider the maximum number of OFDM sequences superimposed on each OOK-on. For example, for M=1, the number of OFDM sequences superimposed on each OOK-on can be considered to be 4, 8, 16, etc. Similar considerations can be adopted for other values ​​of M.

[0260] At this point, according to the above formula, for M=1 and Bzc of length 131, the determined Cv=0,32. The combination obtained through the four root sequences may not be optimal; for example, two OFDM sequences with Cv=0,64 could be considered for each root. To accommodate this situation, the expression can be modified to: C V =v*N CS *λ,v=0,1,..,N M / R M ―1

[0261] Here, λ is the step size adjustment factor, which can adjust the step size when the OFDM sequence superimposed on each OOK-on is not at its maximum value. For example N M,max When M takes values, the maximum number of candidate OFDM sequences that can be superimposed on each OOK-on is: for M = 1, 2, 4, N M,max The values ​​are 16, 8, and 4 respectively. N represents the actual number of candidate sequences configured. CS The same baseline cyclic shift step size for different M values.

[0262] When considering interference from neighboring cells, different OFDM sequences can be used for different cells.

[0263] - Handling method 1: Under the same M value in adjacent cells, the root used does not overlap;

[0264] - Handling method 2: For adjacent cells with the same M value, different Ncs are used;

[0265] - Handling method 3: In adjacent cells with the same M value, the root used does not overlap, and the Ncs used are different;

[0266] - Handling Method 4: For adjacent cells with the same M value, use the same root and Ncs. The cell will further configure the offset, and determine Cv based on the offset. V =v*N CS +O,v=0,1,..,N M / R M ―1

[0267] Similarly, the configurations for different M values ​​can be presented in tabular form, for example...

[0268] or

[0269] The table uses Ncs as an example of 32. Other values ​​can be used, and the specific values ​​in the table can be adjusted accordingly. Here, 0 represents the offset value configured for the network device.

[0270] The above describes how Cv is determined.

[0271] Regarding the determination of root:

[0272] Method 1: The root used for each M value can be agreed upon through a protocol;

[0273] Method 2: For each M value, four root combinations can be agreed upon, and the network device indicates the index of one root combination;

[0274] Method 3: The network can flexibly configure the root used for each M value, and the number can be one or more;

[0275] For each value of M, when the number of candidate OFDM sequences superimposed on each OOK-on symbol is N M N can be determined in the following ways. M Index / order of OFDM sequences.

[0276] Root priority is given, and within the same root, OFDM sequences are ordered in ascending order of Cv values ​​(from smallest to largest). For example, if the configured roots are 1 and 17, each root has 4 Cv values. First, the OFDM sequences generated by all Cv values ​​for root 1 are sorted, then the OFDM sequences generated by all Cv values ​​for root 17 are sorted. That is, for a given M value configuration, when the network configuration root value is {q1, q2}, the number of candidate OFDM sequences superimposed on each OOK on symbol is N. M Time. R M =2, each root can generate P=N M / R M There are n candidate OFDM sequences, and the index i ∈ (0~P-1) of the OFDM sequence generated by the 0th root value (q1) and the index i ∈ (P~N) of the OFDM sequence generated by the 1st root value (q2) are respectively. M —1). R M The root determines the index i∈(0~N). M —1) Total N M There are P candidate OFDM sequences. For each root value, there are P OFDM sequences. The larger the index i, the larger the corresponding Cv value.

[0277] When the OFDM sequence does not carry wake-up indication information

[0278] At this point, the entire LP-WUS can use the same superimposed OFDM sequence.

[0279] Cv can be a fixed value, for example, Cv = 0.

[0280] Root access can be configured via network or determined by a protocol.

[0281] When considering both information-carrying and information-free OFDM sequences:

[0282] Cv can be determined in the following way:

[0283] The value of λ can be 1, in which case λ can be omitted.

[0284] The value of O can be 0.

[0285] That is, one implementation method is

[0286] - If the network device does not indicate this, the value is 0.

[0287] Whether the OFDM sequence carries wake-up indication information can be determined through the network's display configuration, for example, by configuring an enable switch for the OFDM sequence to carry wake-up indication information.

[0288] Alternatively, whether an OFDM sequence carries wake-up indication information can be implicitly determined by the number of candidate sequences configured for each OOK in the network device. For example, N M =1 indicates that the OFDM sequence does not carry wake-up indication information.

[0289] NCS can be configured on network devices or agreed upon by protocols.

[0290] At this point, with different M value configurations, the number of roots used when generating OFDM sequences can be the same.

[0291] ■Regarding LP-SS:

[0292] Since the OFDM sequence in LP-SS does not need to carry information, the same OFDM sequence can be used during LP-SS transmission.

[0293] For LP-SS, Cv can be the same fixed value used when the OFDM sequence in LP-WUS is not transmitting information, for example, Cv=0.

[0294] Alternatively, when the OFDM sequence in LP-WUS does not carry wake-up indication information, a fixed root and Cv can be used for all M values. This root and Cv also apply to LP-SS.

[0295] - Root can be defined by a protocol or indicated by a network device;

[0296] -Cv=0.

[0297] One implementation involves the network device indicating whether the LP-SS uses the LP-WUS OFDM sequence by enabling it. If the network device indicates enable, the OFDM sequence is determined based on the Root and Cv configured for LP-WUS.

[0298] - When LP-WUS is configured not to carry wake-up indication information via OFDM sequence, the OFDM sequence of LP-WUS and LP-SS is the same;

[0299] - When LP-WUS is configured to carry wake-up indication information via OFDM sequence, the OFDM sequence of LP-SS is the same as the first OFDM sequence in the candidate OFDM sequence set with the same M value in LP-WUS; or has the same root as the first OFDM sequence in the candidate OFDM sequence set with the same M value in LP-WUS (Cv=0 of LP-SS).

[0300] Another implementation involves the network device indicating the root of the LP-SS. When no root is indicated, it means the LP-SS does not use the LP-WUS OFDM sequence. When a root is indicated, the LP-SS determines the OFDM sequence based on that root and in conjunction with Cv (which can be protocol-defined, such as Cv=0, or indicated by the network device).

[0301] Examples 1-2: Different M values ​​have the same number of roots; different roots with the same M value have the same number of Cv; different M values ​​use different cyclic shift step sizes Ncs;

[0302] For different M value configurations, using the same number of roots and different cyclic shift step sizes Ncs, determine the cyclic shift Cv.

[0303] For the same M value configuration, when generating OFDM sequences, if the number of roots used is greater than 1, different roots have the same number of Cv.

[0304] The method for determining Cv is similar to that in Example 1-1.

[0305] The difference lies in the different M values. The Ncs associated with the M value can be configured by the network device or agreed upon by the protocol.

[0306] Example 2: Different M values ​​have different numbers of roots; different roots with the same M value have the same number of Cv; different M values ​​have different step sizes Ncs.

[0307] For ZC sequences of different lengths, different numbers of root sequences can be considered, but the same number of Cv are used under each root sequence. In this case, the step size Ncs is related to the value of M, that is, the cyclic shift is related to the value of M.

[0308] According to Determine the step size Ncs for each value of M.

[0309] Where, N CS,max This is the maximum step size, or the step size used when M=1. For example, N CS,max =64;

[0310] Then it can be determined that when M=1, N CS,M＝1 =64; when M=2, N CS,M＝1 =32; when M=4, N CS,M＝4 =16.

[0311] Furthermore, the value of the cyclic shift Cv can be determined based on the following relationship:

[0312] in

[0313] -N M The number of candidate OFDM sequences on each OOK-on symbol under a given configuration M;

[0314] -R specifies the number of roots that can be used under the given M value configuration;

[0315] -N CS,M The step size is determined based on the M value and the baseline step size for a given M value.

[0316] Summary of Examples 1 and 2:

[0317] The key factors for determining the superimposed OFDM sequences of LP-WUS and LP-SS are:

[0318] - Root determination;

[0319] -Cv determination;

[0320] - Determining the sequence index;

[0321] -LP-WUS: Whether to carry wake-up indication information via OFDM sequence

[0322] -LP-SS: Whether to use the OFDM sequence designed with LP-WUS.

[0323] Interference handling between different cells

[0324] ■Rooting:

[0325] When the OFDM sequence carries wake-up indication information

[0326] Method 1: The root used for each M value can be agreed upon through a protocol;

[0327] Method 2: For each M value, the protocol can define X groups of root combinations, and the network device can indicate the index of one root combination;

[0328] For example, a network device is configured with an M value and an index of the root / root set. Using the M value and the index, the root set used for a given M value can be determined.

[0329] Method 3: The network can flexibly configure the root used for each M value, and the number can be one or more;

[0330] When the OFDM sequence does not carry wake-up indication information

[0331] Method 1: The configuration is the same as when carrying wake-up indication information, except that if the network device indicates that wake-up indication information is not to be carried, the root user is determined based on predefined criteria.

[0332] For example, using the first root in the root set given a value of M;

[0333] Method 2: Root can be configured by the network or agreed upon by the protocol.

[0334] LP-SS root:

[0335] When LP-SS uses OFDM sequences designed by LP-WUS:

[0336] Method 1: A root user is designated by agreement;

[0337] Method 2: Indicate root access on the network device;

[0338] Method 3: Determine the root to use based on LP-WUS root.

[0339] For example:

[0340] When LP-WUS does not carry wake-up indication information via OFDM sequence, the OFDM sequence of LP-WUS and LP-SS is the same.

[0341] When LP-WUS carries wake-up indication information via OFDM sequence, the OFDM sequence of LP-SS...

[0342] It is the same as the first OFDM sequence in the candidate OFDM sequence set with the same M value in LP-WUS;

[0343] Or, it has the same root as the first OFDM sequence in the candidate OFDM sequence set with the same M value in LP-WUS.

[0344] Alternatively, it may have the same root as the first OFDM sequence in the candidate OFDM sequence set in LP-WUS (the value of M may be different). ■ Determination of Cv:

[0345] or

[0346] in:

[0347] -N CS,M The cyclic shift step size Ncs used for a given M value configuration.

[0348] Different M values ​​can be configured to use the same Ncs;

[0349] Different M values ​​can be configured to use different Ncs;

[0350] ◆In some implementations, the step size for a given value of M can be determined by the baseline step size Ncs and the value of M:

[0351] N CS,M =N CS *M or N CS,M =N CS / M

[0352] -R M Given a value of M, the number of root users that can be used.

[0353] -N M Given a specific M value, the number of candidate OFDM sequences superimposed on each OOK-on symbol.

[0354] -O: The offset value configured for the network device, based on a step size N. CS,M When determining Cv, the offset values ​​that can be used are as follows. Note that O can be 0, in which case the formula can be simplified to:

[0355] -λ: Step size adjustment factor, which can adjust the actual step size under a given M value configuration. Note that it can be 1, in which case the formula can be simplified to:

[0356] It's important to note that the number of Cvs corresponding to a root is related to the number of roots and the number of candidate OFDM sequences. Not every root takes all Cvs according to the step size.

[0357] For LP-SS:

[0358] Cv can be fixed, for example, Cv = 0.

[0359] ■ Determining the sequence index

[0360] Following the order of priority for CV (Cross-Video), followed by root:

[0361] - First, sort all the CVs in ascending order according to the first root;

[0362] Then arrange the Cv of the second root. And so on.

[0363] ■LP-WUS: Whether wake-up indication information is carried via OFDM sequence

[0364] Method 1: The network is explicitly configured through enable parameters;

[0365] Method 2: The network is implicitly configured by configuring the number of OFDM sequences superimposed on each OOK-on symbol.

[0366] ○N=1 indicates that no wake-up indication information is carried;

[0367] ○N>1 indicates that wake-up indication information is being carried;

[0368] ■LP-SS: Whether the OFDM sequence designed with LP-WUS is used

[0369] Method 1: Display configuration enable parameters;

[0370] Method 2: Determine the relevant parameters of the OFDM sequence, such as root, Ncs, Cv, offset, etc., by indicating whether to use them.

[0371] ○Configure related parameters: Indicates OFDM sequence design for multiplexing LP-WUS.

[0372] ○ No relevant parameters configured: The network does not use the LP-WUS OFDM sequence design.

[0373] ■ Interference handling between different cells

[0374] Method 1: Use different root and / or Ncs for the same M value;

[0375] Method 2: Use different N values ​​for the same M value;

[0376] Method 3: Configure different offsets for the same M value;

[0377] Example 3:

[0378] Unlike the first two embodiments, Cv can be determined in the following way.

[0379] With this approach, for a given value of M, the number of Cv values ​​may differ depending on the root.

[0380] For example: M=2, root1, root2, root3 are configured, Ncs=22, then Cv=0,22,44. This results in the actual generation of 8 candidate OFDM sequences.

[0381] The values ​​used are root1@Cv=0,22,44,root2@Cv=0,22,44,root3@Cv=0,22.

[0382] It is evident that, with three roots, the number of Cv used to generate OFDM sequence sets differs depending on the root.

[0383] 3GPP supports the overlay of OFDM sequences on OOK-on symbols in LP-WUS and LP-SS. However, it does not specify the method for generating the specific OFDM sequence, i.e., how to determine the Cv and the root, or the relationship between the OFDM sequence of LP-SS and LP-WUS.

[0384] This application proposes solutions to these problems. The OFDM sequences used can be generated definitively.

[0385] As can be seen from the above description, the embodiments of this application provide a method for generating OFDM sequences superimposed in LP-WUS and LP-SS. A method for determining the cyclic shift Cv based on the extension of the base ZC sequence is also provided when generating the OFDM sequence.

[0386] For example:

[0387] or

[0388] And the root configuration, the relationship between the OFDM sequence superimposed by LP-SS and the OFDM sequence superimposed by LP-WUS.

[0389] The method embodiments of this application have been described in detail above with reference to Figures 1 and 2. The apparatus embodiments of this application will be described in detail below with reference to Figures 3 and 4. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0390] Figure 3 is a schematic diagram of the structure of a communication device provided in an embodiment of this application. The communication device 300 shown in Figure 3 can be the first device mentioned above. The communication device 300 includes a determining module 310. The determining module 310 is used to determine an OFDM sequence for generating a first signal, wherein the number of OOK symbols transmitted within one OFDM symbol in the first signal is M, and M is a positive integer.

[0391] In some embodiments, the number of root sequences corresponding to the OFDM sequence may be the same or different for different values ​​of M.

[0392] In some embodiments, for the same value of M, different root sequences of the OFDM sequence have the same or different numbers of cyclic shifts.

[0393] In some embodiments, the cyclic shift step size corresponding to the OFDM sequence may be the same or different for different values ​​of M.

[0394] In some embodiments, the first signal includes LP-WUS and / or LP-SS.

[0395] In some embodiments, the first device is a terminal device or a network device.

[0396] Figure 4 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 4 indicate that the unit or module is optional. This device 400 can be used to implement the methods described in the above method embodiments. Device 400 can be a chip, a terminal device, or a network device.

[0397] Apparatus 400 may include one or more processors 410. The processor 410 may support apparatus 400 in implementing the methods described in the preceding method embodiments. The processor 410 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0398] The apparatus 400 may further include one or more memories 420. The memories 420 store a program that can be executed by the processor 410, causing the processor 410 to perform the methods described in the preceding method embodiments. The memories 420 may be independent of the processor 410 or integrated within the processor 410.

[0399] The device 400 may also include a transceiver 430. The processor 410 can communicate with other devices or chips via the transceiver 430. For example, the processor 410 can send and receive data with other devices or chips via the transceiver 430.

[0400] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to the communication device provided in this application, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0401] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in this application embodiment, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0402] This application also provides a computer program. This computer program can be applied to the communication device provided in this application, and causes the computer to execute the methods performed by the communication device in various embodiments of this application.

[0403] It should be understood that the terminology used in this application is only for explaining specific embodiments of this application and is not intended to limit this application. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0404] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0405] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0406] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0407] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0408] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0409] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0410] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0411] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0412] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0413] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0414] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0415] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, include: The first device determines an OFDM sequence for generating a first signal, wherein the number of OOK symbols transmitted within one OFDM symbol of the first signal is M, where M is a positive integer.

2. The method according to claim 1, characterized in that, For different values ​​of M, the number of root sequences corresponding to the OFDM sequence may be the same or different.

3. The method according to claim 1 or 2, characterized in that, For the same value of M, different root sequences of the OFDM sequence have the same or different numbers of cyclic shifts.

4. The method according to any one of claims 1 to 3, characterized in that, For different values ​​of M, the cyclic shift step size corresponding to the OFDM sequence may be the same or different.

5. The method according to any one of claims 1 to 4, characterized in that, The first signal includes LP-WUS and / or LP-SS.

6. The method according to any one of claims 1 to 5, characterized in that, The first device is a terminal device or a network device.

7. A communication device, characterized in that, The communication device is a first device, and the communication device includes: The determining module is used to determine the OFDM sequence used to generate the first signal, wherein the number of OOK symbols transmitted within one OFDM symbol of the first signal is M, where M is a positive integer.

8. The communication device according to claim 7, characterized in that, For different values ​​of M, the number of root sequences corresponding to the OFDM sequence may be the same or different.

9. The communication device according to claim 7 or 8, characterized in that, For the same value of M, different root sequences of the OFDM sequence have the same or different numbers of cyclic shifts.

10. The communication device according to any one of claims 7 to 9, characterized in that, For different values ​​of M, the cyclic shift step size corresponding to the OFDM sequence may be the same or different.

11. The communication device according to any one of claims 7 to 10, characterized in that, The first signal includes LP-WUS and / or LP-SS.

12. The communication device according to any one of claims 7 to 11, characterized in that, The first device is a terminal device or a network device.

13. A communication device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the communication device performs the method as described in any one of claims 1 to 6.

14. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the apparatus to perform the method as described in any one of claims 1 to 6.

15. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1 to 6.

16. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1 to 6.

17. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1 to 6.

18. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1 to 6.

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