Communication method, first device, second device, system, and storage medium

Abstract

The present disclosure provides a communication method, a first device, a second device, a system, and a storage medium. The method comprises: sending a first signal, wherein the first signal is a reference signal used for device sensing, the length of a first period is greater than that of a radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal. The present disclosure improves the estimation performance of Doppler frequency for sensing targets, thereby facilitating interference averaging, and improving the availability of integrated sensing and communication.

Description

Communication method, first device, second device, system and storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the field of communication, and in particular, to a communication method, a first device, a second device, a system and a storage medium. BACKGROUND

[0002] At present, a 5th Generation Mobile Communication Technology (5G) system has characteristics of high speed, low latency, high bandwidth, and supports interworking with Internet of Things.

[0003] SUMMARY

[0004] In order to improve the usability of communication and perception integration, embodiments of the present disclosure provide a communication method, a first device, a second device, a system and a storage medium.

[0005] According to a first aspect of embodiments of the present disclosure, a communication method is provided, the method is performed by a first device, and the method comprises:

[0006] transmitting a first signal; wherein the first signal is a reference signal for device perception; wherein a length of a first period is greater than a length of a radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal.

[0007] According to a second aspect of embodiments of the present disclosure, a communication method is provided, the method is performed by a second device, and the method comprises:

[0008] receiving a first signal; wherein the first signal is a reference signal for device perception; wherein a length of a first period is greater than a length of a radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal.

[0009] According to a third aspect of embodiments of the present disclosure, a first device is provided, comprising:

[0010] a transceiver module, configured to transmit a first signal; wherein the first signal is a reference signal for device perception; wherein a length of a first period is greater than a length of a radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal.

[0011] According to a fourth aspect of embodiments of the present disclosure, a second device is provided, comprising:

[0012] The transceiving module is configured to receive a first signal; wherein the first signal is a reference signal used for device sensing; and wherein a length of a first period is greater than a length of one radio frame, the first period being a repetition period of a first sequence corresponding to the first signal.

[0013] According to a fifth aspect of the embodiments of the present disclosure, a first device is provided, comprising:

[0014] one or more processors;

[0015] The processor is configured to perform the communication method in any of the first aspect.

[0016] According to a sixth aspect of the embodiments of the present disclosure, a second device is provided, comprising:

[0017] one or more processors;

[0018] The processor is configured to perform the communication method in any of the second aspect.

[0019] According to a seventh aspect of the embodiments of the present disclosure, a communication system is provided, comprising:

[0020] a first device configured to implement the communication method in any of the first aspect;

[0021] a second device configured to implement the communication method in any of the second aspect.

[0022] According to an eighth aspect of the embodiments of the present disclosure, a storage medium is provided, which stores instructions, when the instructions are run on an electronic device, causing the electronic device to perform the communication method in any of the first aspect or the second aspect.

[0023] According to a ninth aspect of the embodiments of the present disclosure, a computer program product is provided, comprising a computer program configured to implement the communication method in any of the first aspect or the second aspect when executed by a processor.

[0024] In the embodiments of the present disclosure, the first device can send a first signal, wherein the first signal can be a reference signal used for device sensing, and a length of a first period, which is a repetition period of a first sequence corresponding to the first signal, can be greater than a length of one radio frame. When the first signal is used for device sensing of a sensing target, the estimation performance of the Doppler frequency of the sensing target is improved, which is beneficial for interference averaging and improves the availability of communication and sensing integration.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0027] FIG. 1 is an exemplary schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure.

[0028] FIG. 2A is an exemplary interaction schematic diagram of a communication method according to an embodiment of the present disclosure.

[0029] FIG. 2B is an exemplary scenario schematic diagram of generating a first sequence according to an embodiment of the present disclosure.

[0030] FIG. 3A is an exemplary flow schematic diagram of a communication method according to an embodiment of the present disclosure.

[0031] FIG. 3B is an exemplary flow schematic diagram of a communication method according to an embodiment of the present disclosure.

[0032] FIG. 4A is an exemplary block diagram of a first device according to an embodiment of the present disclosure.

[0033] FIG. 4B is an exemplary block diagram of a second device according to an embodiment of the present disclosure.

[0034] FIG. 5A is an exemplary interaction schematic diagram of a communication device according to an embodiment of the present disclosure.

[0035] FIG. 5B is an exemplary interaction schematic diagram of a chip according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings, in which like reference numerals represent like elements, and secondary reference numerals represent elements with secondary functions. The embodiments described in the following exemplary embodiments are not meant to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0037] The embodiments of the present disclosure provide a communication method, a first device, a second device, a system and a storage medium.

[0038] In a first aspect, the embodiments of the present disclosure provide a communication method, the method is performed by a first device, and the method comprises: transmitting a first signal; wherein the first signal is a reference signal for device sensing; wherein the length of a first period is greater than the length of a radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal.

[0039] In some embodiments of the first aspect, in some embodiments, a length of the second period is less than or equal to a length of the first period, and the second period is a time-frequency resource allocation period of the first signal.

[0040] In some embodiments of the first aspect, in some embodiments, the method further comprises any one of the following: determining the first sequence based on a second sequence and a phase rotation factor, wherein the first sequence on different symbols corresponds to different phase rotation factors; determining the first sequence based on part of elements in a second sequence, wherein the first sequence on different symbols corresponds to different elements in the second sequence; determining the first sequence based on part of elements in a first pseudo-random sequence, wherein the first sequence on different symbols corresponds to different elements in the first pseudo-random sequence.

[0041] In some embodiments of the first aspect, in some embodiments, the second sequence satisfies at least one of the following: a length of a third period is equal to a length of a radio frame, wherein the third period is a repetition period of the second sequence; the second sequence is a second pseudo-random sequence.

[0042] In some embodiments of the first aspect, in some embodiments, the second pseudo-random sequence is reinitialized at each symbol, and an initialization parameter of the second pseudo-random sequence comprises at least one of the following: an identity of the first sequence; a time slot index of a symbol in which the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within a time slot; a number of time slots within a radio frame.

[0043] In some embodiments of the first aspect, in some embodiments, the phase rotation factor is equal to a first element in the second sequence; or the phase rotation factor is an element in a third sequence.

[0044] In some embodiments of the first aspect, in some embodiments, the method further comprises: determining the phase rotation factor based on p, wherein the p is a symbol index corresponding to the first signal.

[0045] In some embodiments of the first aspect, in some embodiments, the third sequence satisfies at least one of the following: the third sequence is a third pseudo-random sequence; the third sequence is a sequence of a first type; wherein the first type comprises a type other than a pseudo-random type; a length of the third sequence is determined based on the first period.

[0046] In some embodiments of the first aspect, in some embodiments, the third pseudo-random sequence is reinitialized according to each of the first period, and an initialization parameter of the third pseudo-random sequence comprises an identity of the first sequence.

[0047] In some embodiments of the first aspect, in some embodiments, the method further comprises: determining one of the third sequences where the phase rotation factor is located based on first information, wherein the first information comprises an identity of the first sequence.

[0048] In some embodiments of the first aspect, in some embodiments, the determining the first sequence based on the part of elements in the second sequence comprises: determining a second element in the second sequence based on p, wherein p is a symbol index corresponding to the first signal; and determining that the first sequence comprises M elements in the second sequence starting from the second element, wherein M is a number of subcarriers occupied by the first signal in one symbol.

[0049] In some embodiments of the first aspect, in some embodiments, the determining the first sequence based on the part of elements in the first pseudo-random sequence comprises: determining a third element in the first pseudo-random sequence based on p; and determining that the first sequence comprises M elements in the first pseudo-random sequence starting from the third element, wherein M is a number of subcarriers occupied by the first signal in one symbol.

[0050] In some embodiments of the first aspect, in some embodiments, the first pseudo-random sequence is reinitialized at each symbol, and an initialization parameter of the first pseudo-random sequence comprises at least one of the following: an identity of the first sequence; a time slot index of a symbol where the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within a time slot; a number of time slots within a radio frame.

[0051] In some embodiments of the first aspect, in some embodiments, the method further comprises any one of the following: determining the p based on k, a first index, and a first offset value, wherein the first index is a symbol index of a symbol where the first signal is located within the first period, and k is a positive integer; determining the p based on at least one of a system frame number (SFN), a time slot index of the first signal within a radio frame, a symbol index of the first signal within a time slot, a number of symbols within a time slot, and a number of time slots within a radio frame; and determining the p based on a second offset value.

[0052] In a second aspect, the embodiments of the present disclosure provide a communication method, the method is performed by a second device, and the method comprises: receiving a first signal; wherein the first signal is a reference signal for device sensing; and wherein a length of a first period is greater than a length of a radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal.

[0053] In some embodiments of the second aspect, in some embodiments, a length of the second period is less than or equal to a length of the first period, the second period being a time-frequency resource allocation period of the first signal.

[0054] In some embodiments of the second aspect, in some embodiments, the first sequence is determined based on a second sequence and a phase rotation factor; wherein the first sequence on different symbols corresponds to different phase rotation factors; or the first sequence is determined based on part of elements in a second sequence; wherein the first sequence on different symbols corresponds to different elements in the second sequence; or the first sequence is determined based on part of elements in a first pseudo-random sequence; wherein the first sequence on different symbols corresponds to different elements in the first pseudo-random sequence.

[0055] In some embodiments of the second aspect, in some embodiments, the second sequence satisfies at least one of the following: a length of a third period is equal to a length of a radio frame; wherein the third period is a repetition period of the second sequence; the second sequence belongs to a second pseudo-random sequence.

[0056] In some embodiments of the second aspect, in some embodiments, the second pseudo-random sequence is re-initialized at each symbol, and an initialization parameter of the second pseudo-random sequence comprises at least one of the following: an identity of the first sequence; a time slot index of a symbol in which the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within a time slot; a number of time slots within a radio frame.

[0057] In some embodiments of the second aspect, in some embodiments, the phase rotation factor is equal to a first element in the second sequence; or the phase rotation factor is an element in a third sequence.

[0058] In some embodiments of the second aspect, in some embodiments, the phase rotation factor is determined based on p; wherein the p is a symbol index corresponding to the first signal.

[0059] In some embodiments of the second aspect, in some embodiments, the third sequence satisfies at least one of the following: the third sequence belongs to a third pseudo-random sequence; the third sequence belongs to a first type of sequence; wherein the first type comprises a type other than a pseudo-random type; a length of the third sequence is determined based on the first period.

[0060] In some embodiments of the second aspect, in some embodiments, the third pseudo-random sequence is re-initialized according to each of the first periods, and an initialization parameter of the third pseudo-random sequence comprises an identity of the first sequence.

[0061] In some embodiments of the second aspect, in some embodiments, the method further comprises: determining one of the third sequences where the phase rotation factor is located based on first information, wherein the first information comprises an identification of the first sequence.

[0062] In some embodiments of the second aspect, in some embodiments, the first sequence comprises M elements in the second sequence starting from a second element, wherein the second element is determined based on p, wherein p is a symbol index corresponding to the first signal, and wherein M is a number of subcarriers occupied by the first signal in one symbol.

[0063] In some embodiments of the second aspect, in some embodiments, the first sequence comprises M elements in the first pseudo-random sequence starting from a third element, wherein the third element is determined based on p, wherein p is a symbol index corresponding to the first signal, and wherein M is a number of subcarriers occupied by the first signal in one symbol.

[0064] In some embodiments of the second aspect, in some embodiments, the first pseudo-random sequence is reinitialized at each symbol, and initialization parameters of the first pseudo-random sequence comprise at least one of the following: an identification of the first sequence; a time slot index of a symbol where the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within a time slot; a number of time slots within a radio frame.

[0065] In some embodiments of the second aspect, in some embodiments, p is determined based on k, a first index, and a first offset value, wherein the first index is a symbol index of a symbol where the first signal is located within the first period, and wherein k is a positive integer; or p is determined based on at least one of the following: a system frame number (SFN), a time slot index of the first signal within a radio frame, a symbol index of the first signal within a time slot, a number of symbols within a time slot, and a number of time slots within a radio frame; or p is determined based on a second offset value.

[0066] In a third aspect, the embodiments of the present disclosure provide a first device, comprising: a transceiver module configured to transmit a first signal, wherein the first signal is a reference signal for device sensing, and wherein a first period has a length greater than a length of a radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal.

[0067] In a fourth aspect, an embodiment of the present disclosure provides a second device, comprising: a transceiver configured to receive a first signal; wherein the first signal is a reference signal for device sensing; wherein a length of a first period is greater than a length of one radio frame, and the first period is a repetition period of a first sequence to which the first signal corresponds.

[0068] In a fifth aspect, an embodiment of the present disclosure provides a first device, comprising: one or more processors; wherein the processor is configured to perform the communication method in any one of the first aspect.

[0069] In a sixth aspect, an embodiment of the present disclosure provides a second device, comprising: one or more processors; wherein the processor is configured to perform the communication method in any one of the second aspect.

[0070] In a seventh aspect, an embodiment of the present disclosure provides a communication system, comprising: a first device configured to implement the communication method in any one of the first aspect; and a second device configured to implement the communication method in any one of the second aspect.

[0071] In an eighth aspect, an embodiment of the present disclosure provides a storage medium, which stores instructions, when the instructions are executed on an electronic device, cause the electronic device to perform the communication method in any one of the first aspect or the second aspect.

[0072] In a ninth aspect, an embodiment of the present disclosure provides a computer program product, comprising a computer program configured to implement the communication method in any one of the first aspect or the second aspect when executed by a processor.

[0073] In a tenth aspect, an embodiment of the present disclosure provides a chip or chip system. The chip or chip system comprises a processing circuit configured to perform the method described in the optional implementation of the first aspect or the second aspect.

[0074] It can be understood that the above-mentioned first device, second device, system, storage medium, computer program product, chip or chip system are all used to perform the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved are referred to the beneficial effects in the corresponding method, which will not be described here.

[0075] The present disclosure proposes an invention name. In some embodiments, the terms of communication method, signal transmission method, signal configuration method, etc. can be replaced with each other, the terms of communication device, signal transmission device, signal configuration device, etc. can be replaced with each other, and the terms of communication system, signal transmission system, signal configuration system, etc. can be replaced with each other.

[0076] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing part of the steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation manners in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, part or all steps of different embodiments can be combined arbitrarily, an embodiment can be combined with optional implementation manners of other embodiments arbitrarily.

[0077] In each embodiment of the present disclosure, the terms and / or descriptions between the embodiments are consistent if there is no special description and logical conflict, and can be referred to each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0078] The terms used in the embodiments of the present disclosure are only for the purpose of describing the specific embodiments, and not as a limitation on the present disclosure.

[0079] In the embodiments of the present disclosure, unless otherwise specified, the elements expressed in singular form, such as "one", "a", "the", "above", "said", "preceding", "this" and the like, can represent "one and only one", and can also represent "one or more", "at least one" and the like. For example, in the case of using articles such as "a", "an", "the" and the like in English, the noun after the article can be understood as singular expression, and can also be understood as plural expression.

[0080] In the embodiments of the present disclosure, "a plurality of" means two or more.

[0081] In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple" and the like can be replaced with each other.

[0082] In some embodiments, "at least one of A, B", "A and / or B", "in one case A, in another case B", "responsive to case A, responsive to case B" and the like, can be interpreted to include both cases, A and B, in some embodiments, A (A is performed regardless of B), in some embodiments, B (B is performed regardless of A), in some embodiments, selected from the group consisting of A and B (the selection between A and B is an option), in some embodiments, A and B (both A and B are performed).

[0083] In some embodiments, "A or B" and the like, can be interpreted to include both cases, A and B, in some embodiments, A (A is performed regardless of B), in some embodiments, B (B is performed regardless of A), in some embodiments, selected from the group consisting of A and B (the selection between A and B is an option).

[0084] The prefix words "first", "second" and the like in the embodiments of the present disclosure are merely intended to distinguish different description objects, and do not constitute a limitation on the position, order, priority, quantity or content of the description objects. The description of the description objects should refer to the description in the claims or embodiments, and should not constitute an additional limitation because of the use of the prefix words. For example, the description objects are "fields", and the ordinal words before "fields" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified thereby are in the same message or not, nor limit the order of "first field" and "second field". For another example, the description objects are "levels", and the ordinal words before "levels" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description objects is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "devices" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description objects are "devices", and "first device" and "second device" can be the same device or different devices, and the types thereof can be the same or different; for another example, the description objects are "information", and "first information" and "second information" can be the same information or different information, and the contents thereof can be the same or different.

[0085] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0086] In some embodiments, the terms "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0087] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0088] In some embodiments, devices, etc., can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as “device”, “equipment”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.

[0089] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0090] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0091] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0092] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0093] As shown in Figure 1, the communication system 100 includes a first device 101 and a second device 102.

[0094] In some embodiments, the first device 101 may be a transmitting device of the first signal.

[0095] The first signal can be a reference signal used for device sensing.

[0096] In one example, the name of the first signal is not limited and can be interchanged with the sensing reference signal, sensing signal, etc.

[0097] In some embodiments, the second device 102 may be a receiving device for the first signal.

[0098] In some embodiments, the first signal is a specific sensing signal that can be used to perform Doppler frequency offset estimation, channel estimation, or channel measurement during device sensing.

[0099] In some embodiments, the first device 101 can be any one of a terminal, a network device, and an Internet of Things device.

[0100] In some embodiments, the second device 102 can be any one of a network device, an Internet of Things, and a terminal.

[0101] In some embodiments, the terminal described above includes, for example, at least one of a mobile phone, a wearable device, an Internet of Things device, a communication-capable car, a smart car, a tablet computer (Pad), a wireless transceiver-equipped computer, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and a wireless terminal device in a smart home, but is not limited thereto.

[0102] In some embodiments, the network device described above includes, for example, at least one of an access network device and a core network device.

[0103] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network, and the access network device can include at least one of an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

[0104] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be realized through software or programs.

[0105] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), wherein the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, and part of the functions of the protocol layers are controlled by the CU, and the remaining part or all of the functions of the protocol layers are distributed in the DU and controlled by the CU, but the present disclosure is not limited thereto.

[0106] In some embodiments, the core network device can be one device including multiple network elements, etc., or can be multiple devices or device groups, each including all or part of the multiple network elements. The network element can be virtual or physical. The core network includes, for example, at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC).

[0107] In some embodiments, the above-mentioned Internet of Things device may, for example, be an unmanned device, including but not limited to unmanned vehicles, unmanned aerial vehicles, etc., or can also be other Internet of Things devices, which are not limited by the present disclosure.

[0108] In the embodiments of the present disclosure, currently a plurality of reference signals (Reference Signal, RS) can be supported, such as Channel State Information-Reference Signal (CSI-RS), Dedicated Reference Signal (DMRS), Positioning Reference Signal (PRS), etc.

[0109] The above-mentioned sequences carried by the reference signals are all reinitialized according to a 10-millisecond (ms) radio frame.

[0110] For example, the sequence of the PRS is as shown in Formula 1:

[0111] Wherein, the mth element in the sequence.

[0112] Wherein, the sequence c(i) is reinitialized on each Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol (hereinafter referred to as symbol) within a radio frame according to the following formula:

[0113] Multiplexing, OFDM) symbol (hereinafter referred to as symbol) within a radio frame according to the following formula:

[0114] Wherein, is the slot index within a radio frame, is the number of OFDM symbols within a slot, is the PRS sequence ID configured by the higher layer signaling, l is the OFDM symbol index within a slot.

[0115] In the perception of the perception target based on the wireless signal, the time delay, angle, Doppler frequency, etc. of the multipath component of the perception target are obtained through the measurement of the perception signal reflected by the perception target, and then the position and other parameters of the perception target are determined. In order to determine the time delay of the perception target, a relatively large bandwidth needs to be configured, so as to improve the time delay resolution. In order to determine the Doppler of the perception target, a plurality of OFDM symbols need to be configured, and the plurality of OFDM symbols occupy a relatively long period of time, so as to improve the Doppler resolution. In order to determine the angle of the perception target, a relatively large number of antenna units need to be configured, so as to improve the angle resolution.

[0116] In some embodiments, if the sensing reference signal is configured on multiple wireless frames, the sequence of the sensing reference signal on each wireless frame is repeated according to the aforementioned RS generation method, which is not conducive to interference averaging and limits the estimation performance of the Doppler frequency of the sensing target.

[0117] The estimation performance of the Doppler frequency of the sensing target is improved, and the availability of communication and sensing integration is improved. The present disclosure provides a communication method, a first device, a second device, a system and a storage medium.

[0118] FIG. 2A is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2A, the embodiment of the present disclosure relates to a communication method, and the method comprises:

[0119] In step S2101, the first device 101 determines a first sequence.

[0120] In some embodiments, the first device 101 is a transmitting end device of the first signal.

[0121] In some embodiments, the name of the first device 101 is not limited and can be interchangeable with a transmitting end device, a reference signal transmitting end device, etc.

[0122] In some embodiments, the first signal is a reference signal used for device sensing.

[0123] In some embodiments, the first signal can be used to estimate the Doppler frequency of the sensing target in the device sensing process. The sensing target can refer to an object that needs to be sensed.

[0124] In some embodiments, the name of the first signal is not limited and can be interchangeable with a sensing reference signal, a specific sensing signal, etc.

[0125] In some embodiments, in order to improve the estimation performance of the Doppler frequency, the length of the first period can be greater than the length of one wireless frame.

[0126] The first period is the repetition period of the first sequence corresponding to the first signal. The first sequence can be a sequence composed of a plurality of first signals located in the first period, and each element in the first sequence corresponds to a first signal.

[0127] For example, the plurality of first signals on each time unit can constitute a first sequence on the time unit.

[0128] The time unit can be in units of symbols, time slots, sub-slots, frames, etc., or can be in units of multiple symbols, multiple time slots, multiple sub-slots, multiple sub-frames, etc.

[0129] It can be understood that the first sequence corresponding to the first signal on two symbols spaced by an integer number of first periods is the same, and if the length of the interval between the two symbols is not equal to an integer number of first periods, the first sequence corresponding to the first signal on the two symbols is different.

[0130] For example, the length of the first period is 3 radio frame lengths, the symbol #x1 on the time slot #0 in the frame #0 and the symbol #x1 on the time slot #0 in the frame #3 are spaced by 3 radio frames, and the first sequence corresponding to the first signal on the two symbols is the same. The symbol #x1 on the time slot #0 in the frame #0 and the symbol #x2 on the time slot #2 in the frame #2 are spaced by less than 3 radio frames, and the first sequence corresponding to the first signal on the two symbols is different.

[0131] Exemplarily, the length of the first period is P, and P>T f , wherein T f may be the length of a radio frame, for example, may be 10 ms.

[0132] Exemplarily, the length of the first period P=c×T f , wherein c may be a positive integer greater than 1, for example, may be 2, 3, 4, …, of course, c may also be any value greater than 1, and the disclosure does not limit this.

[0133] Exemplarily, the value of c may be determined based on a predefined manner, and / or configured by high layer signaling.

[0134] For example, the value of c may be directly agreed by a protocol, for example, c=2.

[0135] For another example, the value of c may be configured by a network device through high layer signaling, for example, Radio Resource Control (RRC) signaling.

[0136] For another example, a set of values of c may be directly agreed by a protocol, for example, the set is {2, 3, 4, …}, and a specific value in the set may be configured by a network device, for example, c is configured as 3 by RRC signaling.

[0137] Exemplarily, c=2 d , wherein d may be any value greater than 1.

[0138] Specifically, the value of d may be determined based on a predefined manner, and / or may be configured by high layer signaling, and the disclosure does not limit this.

[0139] For example, d=10, at this time, the length of the first period P is equal to the length of a System Frame Number (SFN) period.

[0140] In some embodiments, in order to reduce scheduling complexity, the length of the second period P sensRS may be less than or equal to the length of the first period P.

[0141] The second period is a time-frequency resource allocation period of the first signal.

[0142] The network device can allocate time domain resources and / or frequency domain resources to the first signal according to the length of the second period.

[0143] For example, the length of the second period is assumed to be y time slots, where y is a positive integer, and the time-frequency resources occupied by the first signal in the second period are the first 4 symbols of time slot #0 and the first 4 symbols of time slot #(y-2), and the frequency domain resources are resource block #1 and resource block #3.

[0144] It can be understood that the time-frequency resources occupied by two first signals separated by an integer number of second periods can be the same. If the length of the interval between the two first signals is not equal to an integer number of second periods, the time-frequency resources occupied by the two first signals are different.

[0145] For example, the length of the second period is assumed to be y time slots, where y is a positive integer, and the time-frequency resources occupied by the first signal in time slot #0 and time slot #y can be the same, assuming that both occupy the first 4 symbols and both occupy resource block #1 and resource block #3, but the time-frequency resources occupied in time slot #1 and time slot #y can be different, for example, occupying the first 4 symbols in time slot #1 and occupying resource block #3 and resource block #5, and occupying the first 4 symbols in time slot #y and occupying resource block #1 and resource block #3. Wherein the second period can also be understood as the number of time units between the two adjacent time units carrying the first signal being the same, and / or the number of frequency domain units between the two adjacent frequency domain units carrying the first signal being the same.

[0146] The time unit can be in units of symbols, time slots, frames, subframes, etc., and the frequency domain unit can be in units of resource blocks, resource block groups, bandwidth parts, frequency bands, carriers, etc., which are not limited by the present disclosure.

[0147] For example, as shown in FIG. 2B, the two adjacent time slots carrying the first signal can be separated by 2 time slots, and the two adjacent resource blocks carrying the first signal can be separated by 1 resource block.

[0148] The above is only an exemplary description, and the content of the second period is not limited by the present disclosure.

[0149] Exemplarily, P = b x P sensRS Wherein b can be a positive integer, such as 1, 2, 3, etc.

[0150] Exemplarily, the value of b can be determined based on a predefined manner, and / or configured by high layer signaling, which is not limited in the disclosure.

[0151] In one example, P = b x P sensRS At the same time, P = c x T f may be defined, and the minimum value of P can be defined to further improve the estimation performance of the Doppler frequency.

[0152] The minimum value of P can be determined based on a predefined manner, and / or configured by high layer signaling, which is not limited in the disclosure.

[0153] For example, the minimum value of P can be directly agreed by the protocol.

[0154] For another example, the minimum value of P can be configured by the network device through RRC signaling.

[0155] For another example, a set of minimum values of P can be agreed by the protocol, and one minimum value of P in the set can be configured by the network device through RRC signaling.

[0156] The above is only an exemplary description, and the disclosure does not limit the configuration or determination manner of the length of the first period and the length of the second period.

[0157] In some embodiments, the first device 101 can determine the first sequence based on a predefined manner.

[0158] In one example, the first sequence can be determined based on the second sequence and the phase rotation factor.

[0159] Wherein the first sequence can be represented as S, and any element in the first sequence can be represented as S i,j , wherein i = 0, 1, 2, …, M-1, wherein j = 0, 1, 2, …, N-1, wherein M is the number of subcarriers occupied by the first signal in one (OFDM) symbol, and N can be the number of symbols occupied by the first signal in the first period P.

[0160] For example, as shown in FIG. 2B, the first period P of the sensing reference signal includes three radio frames. In each radio frame, the number of symbols R occupied by the first reference signal is 2. The number of subcarriers M occupied by the first signal in one (OFDM) symbol is 4, and the number of symbols N occupied by the first signal in the first period is 6, so i = 0, 1, 2, 3, and j = 0, 1, …, 5.

[0161] Wherein the second sequence can be represented as A, and any element in the second sequence can be represented as a i,rwherein i = 0, 1, 2, …, M-1, wherein r = 0, 1, 2, …, R-1, wherein M is the number of subcarriers occupied by the first signal within one symbol, and R can be the number of symbols occupied by the first signal within one radio frame, for example, as shown in FIG. 2B, the second sequence A includes {a 00 , a 10 , a 20 , a 30 , a 01 , a 11 , a 21 , a 31}.

[0162] In one example, the second sequence A can satisfy at least one of the following: the length of the third period can be equal to the length of one radio frame; the second sequence A belongs to a second pseudo-random sequence.

[0163] Exemplarily, the third period is a repetition period of the second sequence A.

[0164] It can be understood that in FIG. 2B, the second sequences on two symbols with an interval of the third period are the same, and the second sequences on the two symbols are different if the interval between the two symbols is not equal to the length of an integer number of the third period.

[0165] The length of the third period can be equal to the length of one radio frame, for example, equal to 10 ms.

[0166] For example, as shown in FIG. 2B, the second sequence A {a 00 , a 10 , a 20 , a 30 , a 01 , a 11 , a 21 , a 31} corresponds to a third period of the length of one radio frame. The second sequence A is the same on each frame, but the elements in the second sequence are not repeated within the same frame.

[0167] Exemplarily, the second sequence A can belong to a second pseudo-random sequence, and the second pseudo-random sequence can be reinitialized on each symbol, wherein the initialization parameters of the second pseudo-random sequence can include, but are not limited to, at least one of the following: an identifier of the first sequence; a time slot index of the symbol in which the first signal is located within a radio frame; a symbol index of the first signal within a time slot; the number of symbols within one time slot; the number of time slots within one radio frame.

[0168] The initialization of the pseudo-random sequence can refer to a process of generating an initial value based on which the pseudo-random sequence is generated. The second pseudo-random sequence can be initialized at each symbol to ensure that the first sequence generated on two adjacent symbols carrying the first signal is different.

[0169] The initialization parameter of the second pseudo-random sequence can include other parameters, which are not limited in the present disclosure.

[0170] For example, when the second sequence A belongs to the second pseudo-random sequence, the second sequence A in one symbol can be expressed by formula 3:

[0171] In formula 3, c(i) is a pseudo-random sequence. For example, c(i) can be a Gold sequence. c(i) is reinitialized at each OFDM symbol. The initialization parameter can include at least one of the following parameters: an identifier of the first sequence, a time slot index of the symbol carrying the first signal in a radio frame, a symbol index of the first signal in the time slot, a number of symbols in a time slot, a number of time slots in a radio frame, and the like.

[0172] For example, the phase rotation factor can be represented as b j , where j = 0, 1, 2,..., N-1, and N can be the total number of symbols occupied by the first signal. For example, in FIG. 2B, N = 6, and j = 0, 1, 2,..., 5.

[0173] Correspondingly, the element S i,j in the first sequence can be expressed as a i,r × b j , r = mod(j, R), as shown in FIG. 2B. The range of i, j, and r has been described in the foregoing embodiments, and will not be repeated here.

[0174] Since the second sequence A is repeated periodically in a radio frame, in order to make the length of the first period corresponding to the first sequence greater than the length of a radio frame, the first sequence on different symbols can correspond to different phase rotation factors, so that the length of the first period is greater than the length of a radio frame.

[0175] In one example, the phase rotation factor b j can be generated in the following manner, but is not limited thereto:

[0176] Manner 1: The phase rotation factor b j is generated by reusing the pseudo-random sequence generator of the second sequence A.

[0177] Correspondingly, the phase rotation factor b j is equal to the first element in the second sequence at this time.

[0178] That is, j different first elements in the second sequence can be selected as phase rotation factors.

[0179] Exemplarily, the phase rotation factors b j may be determined based on p, e.g., denoted as b j = c(p) + jc(p+1), such that the phase rotation factors corresponding to the first sequence on each symbol are different. Wherein, p is the symbol index corresponding to the first signal.

[0180] For example, in FIG. 2B, b0= a 00 , b1= a 11 , b2= a 20 , b3= a 31 , b4= a 40 , b5= a 51 .

[0181] Wherein, p is determined as follows:

[0182] One way is to determine p based on k, the first index l P and the first offset value Offset#1.

[0183] Exemplarily, p = k x l P + Offset#1.

[0184] Wherein, k is a positive integer, e.g., 1, 2, 3, …, the first index l P is the symbol index of the symbol where the first signal is located within the first period P. The first offset value offset#1 can be a fixed value.

[0185] Wherein, all the symbols within the first period P can be sequentially numbered to determine the first index l P , e.g., if the first period includes G symbols in total, the symbol index starts from 0 to (G-1). Assuming the symbol index corresponding to the first signal is g, the first index l P is g.

[0186] Wherein, the symbol carrying the first signal within the first period P can also be sequentially numbered to determine the first index, e.g., if the first period includes G symbols in total, the symbols carrying the first signal have T in total, the index starts from 0 to (T-1). Assuming the symbol index corresponding to the first signal is t, the first index l P is t.

[0187] Wherein, the first offset value Offset#1 can be determined based on a predefined manner, and / or configured through high layer signaling.

[0188] Exemplarily, the first offset value Offset#1 can be 0, M, n×M, where n is a positive integer greater than 1. Wherein, M is the number of subcarriers occupied by the first signal in one symbol.

[0189] Alternatively, the p can be determined based on at least one of the SFN, a slot index of the first signal in a radio frame, a symbol index of the first signal in a slot, a number of symbols in one slot, and a number of slots in one radio frame.

[0190] Exemplarily,

[0191] Alternatively, Wherein, k is a positive integer, for example, 1, 2, 3, ….

[0192] Wherein, n SFN is the system frame number SFN, and Q can be a positive value, which can be determined based on a predefined manner and / or configured through high layer signaling. Exemplarily, Q = P / T f .

[0193] Wherein, (n SFN mod Q) refers to the remainder obtained by taking the modulus of Q with the system frame number.

[0194] Wherein, refers to a slot index of the first signal in a radio frame, and l refers to a symbol index of the first signal in a slot, refers to a number of symbols in one slot, refers to a number of slots in one radio frame.

[0195] Wherein, offset can be a fixed offset value, which can be equal to or different from the value of the aforementioned offset#1, and the disclosure does not limit this.

[0196] Alternatively, the p can be determined based on a second offset value.

[0197] Wherein, the second offset value can be represented as offset#2, which can be equal to or different from the first offset value, and the disclosure does not limit this.

[0198] Exemplarily, the second offset value can be configured by a high layer.

[0199] Exemplarily, p = Offset#2. For example, Offset#2 = 0, Offset#2 = M, Offset#2 = 2M, M is the number of subcarriers occupied by the first signal in one symbol.

[0200] The above is only an exemplary description, and the disclosure does not limit the manner of determining p.

[0201] In an example, the phase rotation factor b j .

[0202] In an example, the phase rotation factor b j may be an element in a third sequence B.

[0203] It can be understood that, at this time, the phase rotation factor b j may not be equal to any element in the second sequence A.

[0204] The third sequence B can satisfy at least one of the following: belong to a third pseudo-random sequence; belong to a first type of sequence; and the length is determined based on the first period.

[0205] In an example, the third sequence B can belong to a third pseudo-random sequence, and the third pseudo-random sequence can be reinitialized every first period P, wherein the initialization parameters of the third pseudo-random sequence can include but are not limited to the identifier of the first sequence.

[0206] For example, the third sequence B is generated based on a Gold sequence, and can be represented by the following formula 4:

[0207] Wherein, c(i) in formula 4 is a pseudo-random sequence. For example, c(i) can be a Gold sequence. c(i) is reinitialized at the beginning of each repetition period P of the sensing reference signal. The initialization parameters can include the identifier of the first sequence, etc.

[0208] In an example, the third sequence B can belong to a first type of sequence, and the first type includes other types in addition to the pseudo-random type, for example, the third sequence B can be a Zadoff-Chu sequence.

[0209] In an example, the length of the third sequence B can be determined according to the first period P.

[0210] In an example, the number of third sequences B can be multiple, for example, the multiple third sequences B can be determined based on a predefined manner, and the first device 101 can determine one of the third sequences where the phase rotation factor is located based on the first information, wherein the first information can include but is not limited to the identifier of the first sequence.

[0211] For example, the multiple third sequences include a third sequence #1, a third sequence #2 and a third sequence #3, and the identifier of the first sequence is 1, then the third sequence #1 can be used as one of the third sequences where the phase rotation factor is located. Or the third sequence #2 or the third sequence #3 can be used as one of the third sequences where the phase rotation factor is located based on a predefined relationship.

[0212] In one example, such as Figure 2B, the second sequence A is {a 00 a 10 a 20 a 30 a 01 a 11 a 21 a 31 The phase rotation factors are b0, b1, b2, b3, b4, and b5, and the elements S of the first sequence are... i,j =a i,r ×b j Then the first sequence can be {a} 00 ×b0, a 10 ×b0, a 20 ×b0, a 30 ×b0, a 01 ×b1,a 11 ×b1,a 21 ×b1,a 31 ×b1,a 00 ×b2,a 10 ×b2,a 20 ×b2,a 30 ×b2,a 01 ×b3,a 11 ×b3,a 21 ×b3,a 31 ×b3,a 00 ×b4, a 10 ×b4, a 20 ×b4, a 30 ×b4, a 01 ×b5,a 11 ×b5,a 21 ×b5,a 31 ×b5}.

[0213] In one example, the first sequence can be determined based on a subset of elements in the second sequence.

[0214] In one example, the second sequence A can satisfy at least one of the following: the length of the third period can be equal to the length of a wireless frame; and it belongs to the second pseudo-random sequence.

[0215] The specific content of the second sequence has been described in the foregoing embodiments and will not be repeated here.

[0216] For example, if the second sequence A belongs to the second pseudo-random sequence, the second sequence A can be represented by Formula 5:

[0217] where c(i) in equation 5 is a pseudo-random sequence. For example, c(i) can be a Gold sequence. c(i) is re-initialized at each OFDM symbol. The initialization parameters can include at least one of an identification of a first sequence, a time slot index of a symbol in which the first signal is located within a radio frame, a symbol index of the first signal within the time slot, a number of symbols within a time slot, a number of time slots within a radio frame, and the like.

[0218] The second sequence A can be considered as a long enough sequence, and the first device 101 can obtain the first sequence on different symbols by starting from different elements in the second sequence A and taking M elements, so that the first sequence on different symbols corresponds to different elements in the second sequence.

[0219] In an example, the first device 101 can determine a second element in the second sequence A based on p, where p is the symbol index corresponding to the first signal.

[0220] Further, the first sequence can be determined to include M elements in the second sequence A starting from the second element, where M is the number of subcarriers occupied by the first signal within a symbol.

[0221] For example, the first device 101 starts from element #z in the second sequence A as a starting element, takes 4 elements including element #z, element #(z+1), element #(z+2) and element #(z+3) as the first sequence on symbol #0, starts from element #z' in the second sequence A as a starting element, takes 4 elements including element #z', element #(z'+1), element #(z'+2) and element #(z'+3) as the first sequence on symbol #4, and so on, so as to ensure that the first sequence on different symbols corresponds to different elements in the second sequence.

[0222] For example, the second sequence A can be denoted as a(m), m=0, 1, …, and the first sequence can be a(i+p), i=0, 1, …, M-1, where M is the number of subcarriers occupied by the first signal within a symbol.

[0223] where the p can be determined based on k, the first index l P and the first offset value Offset#1.

[0224] Alternatively, the p can be determined based on at least one of SFN, a time slot index of a symbol in which the first signal is located within a radio frame, a symbol index of the first signal within the time slot, a number of symbols within a time slot, and a number of time slots within a radio frame.

[0225] The specific determination manner has been described in the foregoing embodiments, and will not be repeated here.

[0226] In one example, the first sequence can be determined based on part of elements in the first pseudo-random sequence.

[0227] The first device 101 can directly obtain the first sequence by intercepting different elements from the first pseudo-random sequence.

[0228] For example, the first device 101 can determine the third element in the first pseudo-random sequence based on p, and determine the first sequence to include M elements in the first pseudo-random sequence starting from the third element, where M is the number of subcarriers occupied by the first signal in one symbol.

[0229] The first pseudo-random sequence c(i) can be reinitialized in each symbol, and the initialization parameters of the first pseudo-random sequence include at least one of the following: an identifier of the first sequence; a time slot index of the symbol where the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within a time slot; and a number of time slots within a radio frame.

[0230] For example, the repetition period of the first pseudo-random sequence c(i) can be one radio frame. Let the intercepted sequence in one symbol be c'(i), and the first sequence be The c(i) can be generated in each symbol respectively. The c(i) can be a Gold sequence. The c(i) is reinitialized in each symbol. The initialization parameters can include at least one of the following: an identifier of the first sequence; a time slot index of the symbol where the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within a time slot; and a number of time slots within a radio frame.

[0231] In the symbol p where the first signal is located, the sequence intercepted by the first sequence can be c'(i) = c(i + p), i = 0, 1, 2, …, 2M-1.

[0232] The p can be determined based on k, the first index l P and the first offset value Offset#1.

[0233] Alternatively, the p can be determined based on at least one of the following: a system frame number (SFN); a time slot index of the symbol where the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within a time slot; and a number of time slots within a radio frame.

[0234] The specific determination method has been described in the foregoing embodiments, and will not be repeated here.

[0235] The above is only an example. Other ways of determining or generating the first sequence should be within the protection scope of the present disclosure, as long as the length of the first period corresponding to the first signal is ensured to be greater than the length of a radio frame.

[0236] At step S2102, the first device 101 sends the first signal to the second device 102.

[0237] In some embodiments, the first device 101 sends the first signal to the second device 102 based on the first sequence.

[0238] In some embodiments, the second device 102 receives the first signal.

[0239] In some embodiments, the second device 102 can be a receiving end device of the first signal.

[0240] In some embodiments, the second device 102 can be a terminal, a network device, an Internet of Things device, etc., which are not limited in the present disclosure.

[0241] In some embodiments, the name of the second device 102 is not limited and can be interchangeable with a receiving end device, a reference signal receiving end device, etc.

[0242] At step S2103, the second device 102 determines the first sequence.

[0243] In some embodiments, the second device 102 determines the first sequence based on the second sequence and a phase rotation factor. Different phase rotation factors correspond to different symbols of the first sequence.

[0244] In some embodiments, the second device 102 determines the first sequence based on part of the elements in the second sequence. Different elements in the second sequence correspond to different symbols of the first sequence.

[0245] In some embodiments, the second device 102 determines the first sequence based on part of the elements in the first pseudo-random sequence. Different elements in the first pseudo-random sequence correspond to different symbols of the first sequence.

[0246] The content about the first sequence is similar to that of the first sequence in step S2101, which is not repeated here.

[0247] The second device 102 can parse the above first signal based on the first sequence. Further, the Doppler frequency of the sensing target can be estimated based on the first signal.

[0248] In the above embodiments, "symbol", "slot", "frame", and the like can be interchangeable, i.e., the size of the time unit is not limited in the present disclosure. Any solution that extends the length of the repetition period of the perceived reference signal sequence (e.g., greater than the length of a radio frame) should be within the scope of the present disclosure.

[0249] In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and the terms "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", "chip", and the like can be replaced with each other.

[0250] In some embodiments, "acquire", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive", and the like can be replaced with each other, which can be interpreted as receiving from other subjects, acquiring from protocols, acquiring from higher layers, obtaining by self-processing, implementing autonomously, and the like.

[0251] In some embodiments, the terms "send", "transmit", "report", "issue", "transmit", "bidirectional transmission", "send and / or receive", and the like can be replaced with each other.

[0252] The communication method related to the embodiments of the present disclosure can include at least one of steps S2101-S2103. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, steps S2101+S2102 can be implemented as an independent embodiment, step S2103 can be implemented as an independent embodiment, steps S2102+S2103 can be implemented as an independent embodiment, steps S2101-S2103 can be implemented as an independent embodiment, but are not limited thereto.

[0253] In some embodiments, steps S2101-S2103 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0254] In some embodiments, the execution sequence of steps S2101 to S2103 is not limited.

[0255] In the above embodiments, the estimation performance of the Doppler frequency of the sensing target is improved, the interference averaging is facilitated, and the availability of the communication and sensing integration is improved.

[0256] FIG. 3A is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3A, the embodiment of the present disclosure relates to a communication method, and the above method is performed by the first device 101, and the method comprises the following steps:

[0257] In step S3101, a first sequence is determined.

[0258] In some embodiments, the optional implementation of step S3101 can refer to the optional implementation of step S2101 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0259] In step S3102, a first signal is transmitted.

[0260] In some embodiments, the first device 101 can transmit the first signal to the second device 102.

[0261] In some embodiments, the second device 102 can receive the first signal.

[0262] In some embodiments, the optional implementation of step S3102 can refer to the optional implementation of step S2102 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0263] In some embodiments, steps S3101 to S3102 are optional, and one or more of the steps can be omitted or replaced in different embodiments.

[0264] In some embodiments, the execution sequence of steps S3101 to S3102 is not limited.

[0265] In the above embodiments, the estimation performance of the Doppler frequency of the sensing target is improved, the interference averaging is facilitated, and the availability of the communication and sensing integration is improved.

[0266] FIG. 3B is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3B, the embodiment of the present disclosure relates to a communication method, and the above method is performed by the second device 102, and the method comprises the following steps:

[0267] In step S3201, a first signal is acquired.

[0268] In some embodiments, the second device 102 can obtain the first signal from the first device 101, but is not limited thereto, and can also receive the first signal sent by other subjects.

[0269] In some embodiments, the second device 102 obtains the first signal as specified by a protocol.

[0270] In some embodiments, the second device 102 obtains the first signal from upper layer(s).

[0271] In some embodiments, the second device 102 processes to obtain the first signal.

[0272] In some embodiments, step S3102 is omitted, and the second device 102 autonomously implements the function indicated by the first signal, or the second device 102 obtains the first signal based on a pre-defined rule or protocol agreement, or the above function is default or default.

[0273] In some embodiments, the optional implementation of step S3201 can refer to the optional implementation of step S2102 of FIG. 2A and other associated parts in the embodiments involved in FIG. 2A, which will not be repeated here.

[0274] Step S3202, determining the first sequence.

[0275] In some embodiments, the optional implementation of step S3202 can refer to the optional implementation of step S2103 of FIG. 2A and other associated parts in the embodiments involved in FIG. 2A, which will not be repeated here.

[0276] In some embodiments, steps S3201 to S3202 are optional, and one or more of the steps can be omitted or replaced in different embodiments.

[0277] In some embodiments, the execution order of steps S3201 to S3202 is not limited.

[0278] In the above embodiments, the estimation performance of the Doppler frequency of the sensing target is improved, the interference averaging is facilitated, and the availability of the integrated communication and sensing is improved.

[0279] The above process is further illustrated as follows.

[0280] Let the wireless frame length be T f , for example, T f = 10 ms, in a 5G system, the sequence of the same reference signal of two symbols with interval T f is the same, that is, the repetition period is T fIn order to enhance the interference averaging performance of the sensing reference signal (i.e., the first signal) in time dimension, the repetition period P of the sensing reference signal sequence is greater than the length of one radio frame, i.e., P > T f The repetition period P can be equal to the length of an integer number of radio frames, i.e., P = c x T f , c is an integer greater than 1. c can be predefined or configured by higher layer signaling. For example, c = 2 d d is an integer greater than 1. d can be predefined or configured by higher layer signaling. In particular, d can be equal to 10, so that the repetition period is equal to the time length of one system frame number (SFN) period.

[0281] The time resources occupied by the sensing signal can be configured according to the period P sensRS The repetition period P can be equal to the period P sensRS of one or more sensing signals, i.e., P = b x P sensRS , b is an integer greater than or equal to 1. b can be predefined or configured by higher layer signaling. By using the above method, the P = b x P sensRS is further limited to include an integer number of radio frames, and the minimum value of P is limited. The minimum value of P can be predefined or configured by higher layer signaling.

[0282] Embodiment one, each element of the sensing reference signal sequence can be represented as the product of two numbers, i.e., S i,j = a i,r x b j , where r = mod(j, R), i = 0, 1, …, M-1, j = 0, 1, …, N-1, r = 0, 1, 2, …, R-1. Wherein a i,r may be an element of the sequence A, b j is a phase rotation factor. M is the number of subcarriers occupied by the sensing reference signal in one OFDM symbol, N is the number of OFDM symbols occupied by the sensing reference signal in one repetition period P, and R is the total number of OFDM symbols occupied by the sensing reference signal in one radio frame.

[0283] The sequence A can be generated in each OFDM symbol respectively. The repetition period of the sequence A can be one radio frame. In one OFDM symbol, the sequence A is c(i) is a pseudo-random sequence. For example, c(i) can be a Gold sequence. c(i) is reinitialized on each OFDM symbol. The initialization parameters can include at least part of the following parameters: the identification of the sequence of the sensing reference signal (i.e., the first sequence), the time slot index of the OFDM symbol in which the sensing reference signal is located within the radio frame, the OFDM symbol index within the time slot, the number of OFDM symbols within one time slot, the number of time slots within one radio frame, etc.

[0284] As shown in Fig. 2B, based on sequence A and phase rotation factor b j An illustration of generating a sensing reference signal sequence. Here it is assumed that two OFDM symbols within each radio frame are allocated for sensing reference signal, and the corresponding sequence A is a i,0 and a i,1 . Accordingly, the phase rotation factor b j , j = 0, 1, 2, 3, 4, 5.

[0285] Within one OFDM symbol, the phase rotation factor b j may be generated by a pseudo-random sequence generator which can reuse sequence A within the OFDM symbol. Let b j = c(p) + jc(p + 1). p can be determined according to the OFDM symbol index l P of the OFDM symbol where the sensing reference signal is located within the repetition period P of the sensing reference signal sequence. For example, p = l P + Offset, or, p = k x l P + Offset. Where k is a positive integer, e.g. 1, 2, 3,.... The above OFDM symbol index l P may be numbered only for the OFDM symbols within period P which carry sensing reference signal, or can be numbered for all OFDM symbols within period P. Alternatively, p can be determined according to at least part of SFN n SFN , the slot index s within the radio frame, the OFDM symbol index l within the slot, the number of OFDM symbols within one slot and the number of slots within one radio frame or, k is a positive integer. The at least part of the SFN can be mod(n SFN , Q), where Q can be predefined or configured by higher layer signaling. For example, Q = P / T f . Offset can be an offset from which the elements of c(i) are taken to generate b r . For example, Offset = 0. Alternatively, p can be equal to an offset value configured by higher layer, p = Offset. For example, Offset = 2M, M is the number of subcarriers occupied by the sensing reference signal within the OFDM symbol.

[0286] The phase rotation factor b rIt can also be an element of sequence B. Sequence B can be generated based on a Gold sequence, i.e., sequence B is c(i) is a pseudo-random sequence. For example, c(i) can be a Gold sequence. c(i) is re-initialized at the beginning of each repetition period P of the perception reference signal. The initialization parameters can include at least part of the ID of the sequence of the perception reference signal, the index of the slot in which the perception reference signal is located within a radio frame, the index of the OFDM symbol within the slot, the number of OFDM symbols within a slot, the number of slots within a radio frame, etc.

[0287] Embodiment two, the perception reference signal sequence within each OFDM symbol can be derived from different parts of sequence A. Sequence A can be generated separately within each OFDM symbol. The repetition period of sequence A can be one radio frame. Sequence A is c(i) is a pseudo-random sequence. For example, c(i) can be a Gold sequence. c(i) is re-initialized at the beginning of each repetition period P of the perception reference signal. The initialization parameters can include at least part of the ID of the sequence of the perception reference signal, the index of the slot in which the perception reference signal is located within a radio frame, the index of the OFDM symbol within the slot, the number of OFDM symbols within a slot, the number of slots within a radio frame, etc.

[0288] Within one OFDM symbol p of the perception reference signal, let the sequence A within the OFDM symbol be a(m), m = 0, 1, …, the perception reference signal sequence can be a(i + p), i = 0, 1, …, M - 1, M being the number of subcarriers occupied by the perception reference signal within one OFDM symbol. p can be determined according to at least part of the index of the OFDM symbol in which the perception reference signal is located within the repetition period P of the perception reference signal P , for example, p = l P + Offset, or p = k x l P + Offset. k is a positive integer. The above OFDM symbol index can be numbered only for the OFDM symbol carrying the perception reference signal in period P, or can be numbered for all OFDM symbols in period P. Alternatively, p can be determined according to at least part of the SFN n SFN , the index of the slot in which the OFDM symbol is located within a radio frame , the index of the OFDM symbol within the slot l, the number of OFDM symbols within a slot , and the number of slots within a radio frame . For example, or k is a positive integer. At least a part of the SFN can be mod(n SFN , Q), where Q can be predefined or configured by higher layer signaling. For example, Q = P / T f . Offset can be the offset of the truncated part of sequence A. For example, Offset = 0, or Offset = M, where M is the number of subcarriers occupied by the perception reference signal in the OFDM symbol.

[0289] In an embodiment, the perception reference signal sequence in each OFDM symbol can be obtained by different parts of a pseudo-random sequence c(i). The repetition period of c(i) can be one radio frame. Denote the truncated part of c(i) in one OFDM symbol as c'(i), then the perception reference signal sequence is c(i) can be generated separately in each OFDM symbol. The series of perception reference signals For example, c(i) can be a Gold sequence. c(i) is reinitialized in each OFDM symbol. The initialization parameters can include at least part of the following parameters: the identity of the sequence of the perception reference signal, the slot index of the OFDM symbol where the perception reference signal is located within the radio frame, the OFDM symbol index within the slot, the number of OFDM symbols within one slot, the number of slots within one radio frame, etc.

[0290] In one OFDM symbol p of the perception reference signal, the truncated part of the perception reference signal sequence can be c'(i) = c(i + p), i = 0, 1, …, 2M - 1, where M is the number of subcarriers occupied by the perception reference signal in one OFDM symbol. p can be determined according to the OFDM symbol index l P of the OFDM symbol where the perception reference signal is located within the repetition period P of the perception reference signal sequence. For example, p = l P + Offset, or p = k x l P + Offset. k is a positive integer. The above OFDM symbol index can be numbered only for the OFDM symbols carrying the perception reference signal in the period P, or can be numbered for all OFDM symbols in the period P. Alternatively, p can be determined according to at least a part of the SFN n SFN , the slot index of the OFDM symbol within the radio frame , the OFDM symbol index l within the slot, the number of OFDM symbols within one slot , and the number of slots within one radio frame . For example, or, k is a positive integer. At least a part of the SFN can be mod(n SFNQ), where Q can be predefined or configured by higher layer signaling. For example, Q = P / T f Offset can be an offset of the partial sequence from c(i). For example, Offset = 0.

[0291] In the embodiments of the present disclosure, some or all of the steps, and optional implementation manners thereof, can be combined with some or all of the steps in other embodiments, or combined with optional implementation manners in other embodiments.

[0292] The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device comprising units or modules for implementing the steps performed by the first device in any of the above methods. For another example, another device is proposed, comprising units or modules for implementing the steps performed by the second device in any of the above methods.

[0293] It should be understood that the division of units or modules in the above device is only a logical function division, and all or part of them can be integrated into one physical entity, or physically separated. In addition, the units or modules in the device can be implemented in the form of processor calling software: for example, the device comprises a processor connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to implement any of the above methods or the functions of the units or modules of the device, wherein the processor is a general processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuit, and the functions of some or all of the units or modules can be implemented by designing the hardware circuit, and the hardware circuit can be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the units or modules are implemented by designing the logical relationship of elements in the circuit; for another example, in another implementation, the hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to implement the functions of some or all of the units or modules. All units or modules of the above device can be implemented in the form of processor calling software, or all units or modules can be implemented in the form of hardware circuit, or part of the units or modules can be implemented in the form of processor calling software, and the remaining part can be implemented in the form of hardware circuit.

[0294] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuit, and the logical relationship of the hardware circuit is fixed or can be reconfigured. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), and the like.

[0295] FIG. 4A is a structural schematic diagram of a first device according to an embodiment of the present disclosure. As shown in FIG. 4A, the first device 4100 can include a transceiver module 4101.

[0296] In some embodiments, the transceiver module 4101 described above is configured to transmit a first signal; wherein the first signal is a reference signal for device sensing; wherein a length of a first period is greater than a length of one radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal.

[0297] Optionally, the transceiver module 4101 described above is configured to perform at least one of the transmitting and / or receiving communication steps (for example, step S2102, but not limited thereto) performed by the first device 4100 in any of the above methods, which will not be described herein.

[0298] In some embodiments, a length of a second period is less than or equal to a length of the first period, and the second period is a time-frequency resource allocation period of the first signal.

[0299] In some embodiments, the first device 4100 further includes a processing module configured to determine the first sequence based on any one of the following: the second sequence and a phase rotation factor; wherein the first sequence on different symbols corresponds to different phase rotation factors; a part of elements in the second sequence; wherein the first sequence on different symbols corresponds to different elements in the second sequence; a part of elements in the first pseudo-random sequence; wherein the first sequence on different symbols corresponds to different elements in the first pseudo-random sequence.

[0300] In some embodiments, the second sequence satisfies at least one of the following: a length of a third period is equal to a length of a radio frame; wherein the third period is a repetition period of the second sequence; belongs to a second pseudo-random sequence.

[0301] In some embodiments, the second pseudo-random sequence is reinitialized on each symbol, and an initialization parameter of the second pseudo-random sequence includes at least one of the following: an identity of the first sequence; a time slot index of a symbol where the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within a time slot; a number of time slots within a radio frame.

[0302] In some embodiments, the phase rotation factor is equal to a first element in the second sequence; or the phase rotation factor is an element in a third sequence.

[0303] In some embodiments, the processing module is further configured to determine the phase rotation factor based on p; wherein the p is a symbol index corresponding to the first signal.

[0304] In combination with some embodiments of the first aspect, in some embodiments, the third sequence satisfies at least one of the following: belongs to a third pseudo-random sequence; belongs to a first type of sequence; wherein the first type includes other types than the pseudo-random type; a length is determined based on the first period.

[0305] In some embodiments, the third pseudo-random sequence is reinitialized according to each of the first periods, and an initialization parameter of the third pseudo-random sequence includes an identity of the first sequence.

[0306] In some embodiments, the processing module is further configured to determine one of the third sequences where the phase rotation factor is located based on first information; wherein the first information includes an identity of the first sequence.

[0307] In some embodiments, the processing module is further configured to: determine a second element in the second sequence based on p, wherein p is a symbol index corresponding to the first signal; and determine that the first sequence comprises M elements in the second sequence starting from the second element, wherein the M is a number of subcarriers occupied by the first signal within one symbol.

[0308] In some embodiments, the processing module is further configured to: determine a third element in the first pseudo-random sequence based on p; and determine that the first sequence comprises M elements in the first pseudo-random sequence starting from the third element, wherein the M is a number of subcarriers occupied by the first signal within one symbol.

[0309] In some embodiments, the first pseudo-random sequence is reinitialized at each symbol, and initialization parameters of the first pseudo-random sequence comprise at least one of the following: an identifier of the first sequence; a time slot index of a symbol in which the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within one time slot; and a number of time slots within one radio frame.

[0310] In some embodiments, the processing module is further configured to determine the p based on at least one of the following: k, a first index, and a first offset value, wherein the first index is a symbol index of a symbol in which the first signal is located within the first period, and k is a positive integer; a system frame number (SFN), a time slot index of the first signal within a radio frame, a symbol index of the first signal within a time slot, a number of symbols within one time slot, and a number of time slots within one radio frame; and a second offset value.

[0311] FIG. 4B is a structural schematic diagram of a first device according to an embodiment of the present disclosure. As shown in FIG. 4B, the second device 4200 can include a transceiver module 4201.

[0312] In some embodiments, the transceiver module 4201 described above is configured to receive a first signal, wherein the first signal is a reference signal used for device sensing, and a length of a first period is greater than a length of one radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal.

[0313] Optionally, the transceiver module 4201 described above is configured to perform at least one of the receiving and / or transmitting communication steps (for example, step S2102, but not limited thereto) performed by the second device 4200 in any of the above methods, which will not be described herein again.

[0314] In some embodiments, a length of a second period is less than or equal to a length of the first period, and the second period is a time-frequency resource allocation period of the first signal.

[0315] In some embodiments, the first sequence is determined based on the second sequence and a phase rotation factor; wherein the first sequence on different symbols corresponds to different phase rotation factors; or the first sequence is determined based on part of elements in the second sequence; wherein the first sequence on different symbols corresponds to different elements in the second sequence; or the first sequence is determined based on part of elements in a first pseudo-random sequence; wherein the first sequence on different symbols corresponds to different elements in the first pseudo-random sequence.

[0316] In some embodiments, the second sequence satisfies at least one of the following: a length of a third period is equal to a length of a radio frame; wherein the third period is a repetition period of the second sequence; belongs to a second pseudo-random sequence.

[0317] In some embodiments, the second pseudo-random sequence is re-initialized at each symbol, and initialization parameters of the second pseudo-random sequence include at least one of the following: an identity of the first sequence; a time slot index of a symbol where the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within a time slot; a number of time slots within a radio frame.

[0318] In some embodiments, the phase rotation factor is equal to a first element in the second sequence; or the phase rotation factor is an element in a third sequence.

[0319] In some embodiments, the phase rotation factor is determined based on p; wherein the p is a symbol index corresponding to the first signal.

[0320] In some embodiments, the third sequence satisfies at least one of the following: belongs to a third pseudo-random sequence; belongs to a first type of sequence; wherein the first type includes other types than pseudo-random type; a length is determined based on the first period.

[0321] In some embodiments, the third pseudo-random sequence is re-initialized according to each of the first periods, and initialization parameters of the third pseudo-random sequence include an identity of the first sequence.

[0322] In some embodiments, the apparatus further includes a processing module configured to determine one of the third sequences where the phase rotation factor is located based on first information, wherein the first information includes an identity of the first sequence, when the number of the third sequences is more than one.

[0323] In some embodiments, the first sequence comprises M elements in the second sequence starting from a second element; wherein the second element is determined based on p, the p being a symbol index corresponding to the first signal; wherein the M is a number of subcarriers occupied by the first signal in one symbol.

[0324] In some embodiments, the first sequence comprises M elements in the first pseudo-random sequence starting from a third element; wherein the third element is determined based on p, the p being a symbol index corresponding to the first signal; wherein the M is a number of subcarriers occupied by the first signal in one symbol.

[0325] In some embodiments, the first pseudo-random sequence is reinitialized on each symbol, and initialization parameters of the first pseudo-random sequence comprise at least one of the following: an identifier of the first sequence; a time slot index of a symbol in which the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within one time slot; a number of time slots within one radio frame.

[0326] In some embodiments, the p is determined based on k, a first index, and a first offset value; wherein the first index is a symbol index of a symbol in which the first signal is located within the first period; wherein k is a positive integer; or the p is determined based on at least one of the following: a system frame number (SFN), a time slot index of the first signal within a radio frame, a symbol index of the first signal within a time slot, a number of symbols within one time slot, and a number of time slots within one radio frame; or the p is determined based on a second offset value.

[0327] In some embodiments, the sending module and / or the receiving module can be referred to as a transceiver module, and the sending module and the receiving module can be separate or integrated together. Alternatively, the transceiver module can be mutually replaced with a transceiver.

[0328] FIG. 5A is a structural schematic diagram of a communication device 5100 according to the embodiments of the present disclosure. The communication device 5100 can be a first device or a second device (for example, a user equipment, a vehicle, an Internet of Things device, etc.) or a network device (for example, an access network device, a core network device, etc.), or a chip, a chip system, or a processor supporting terminal implementation of any of the above methods, or a chip, a chip system, or a processor supporting network device implementation of any of the above methods. The communication device 5100 can be used to implement the methods described in the above method embodiments, and specific reference can be made to the descriptions in the above method embodiments.

[0329] As shown in FIG. 5A, the communication device 5100 includes one or more processors 5101. The processor 5101 can be a general processor or a special-purpose processor, etc., for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, the central processing unit can be used to control a communication apparatus (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process data of the programs. Optionally, the communication device 5100 is configured to perform any of the above methods. Optionally, the one or more processors 5101 are configured to invoke instructions to cause the communication device 5100 to perform any of the above methods.

[0330] In some embodiments, the communication device 5100 further includes one or more transceivers 5102. When the communication device 5100 includes one or more transceivers 5102, the transceiver 5102 performs at least one of the communication steps (e.g., step S2102, but not limited to this) in the above methods, and the processor 5101 performs at least one of the other steps (e.g., step S2101, step S2103, but not limited to this). In optional embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, interface circuit, interface, etc. can be replaced with each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced with each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced with each other.

[0331] In some embodiments, the communication device 5100 further includes one or more memories 5103 for storing data. Optionally, all or part of the memory 5103 can also be outside the communication device 5100. In optional embodiments, the communication device 5100 can include one or more interface circuits 5104. Optionally, the interface circuit 5104 is connected to the memory 5103, and the interface circuit 5104 can be used to receive data from the memory 5103 or other devices, and can be used to send data to the memory 5103 or other devices. For example, the interface circuit 5104 can read the data stored in the memory 5103 and send the data to the processor 5101.

[0332] The communication device 5100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 5100 described in the present disclosure is not limited thereto, and the structure of the communication device 5100 can not be limited by FIG. 5A. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, and the like; (6) other devices, and the like.

[0333] FIG. 5B is a structural schematic diagram of a chip 5200 according to an embodiment of the present disclosure. For the case where the communication device 5100 is a chip or a chip system, the structural schematic diagram of the chip 5200 shown in FIG. 5B can be referred to, but is not limited thereto.

[0334] The chip 5200 includes one or more processors 5201. The chip 5200 is configured to perform any of the above methods.

[0335] In some embodiments, the chip 5200 further includes one or more interface circuits 5202. Optionally, the terms interface circuit, interface, transceiver pin, and the like can be replaced with each other. In some embodiments, the chip 5200 further includes one or more memories 5203 for storing data. Optionally, all or part of the memory 5203 can be outside the chip 5200. Optionally, the interface circuit 5202 is connected to the memory 5203, and the interface circuit 5202 can be configured to receive data from the memory 5203 or other devices, and the interface circuit 5202 can be configured to send data to the memory 5203 or other devices. For example, the interface circuit 5202 can read data stored in the memory 5203 and send the data to the processor 5201.

[0336] In some embodiments, the interface circuit 5202 performs at least one of the communication steps (for example, step S2102, but not limited thereto) of transmitting and / or receiving in the above methods. The interface circuit 5202 performing the communication steps such as transmitting and / or receiving in the above methods means that the interface circuit 5202 performs data interaction between the processor 5201, the chip 5200, the memory 5203, or a transceiver device. In some embodiments, the processor 5201 performs at least one of the other steps (for example, step S2101, step S2103, but not limited thereto).

[0337] The modules and / or devices described in each embodiment of the virtual device, physical device, chip, etc. can be combined or separated according to circumstances. Optionally, part or all of the steps can also be performed by multiple modules and / or devices in cooperation, which is not limited here.

[0338] The disclosure further proposes a storage medium, and instructions are stored on the storage medium. When the instructions run on the communication device 5100, the communication device 5100 performs any one of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a transitory storage medium.

[0339] The disclosure further proposes a program product, and the program product is executed by the communication device 5100, so that the communication device 5100 performs any one of the above methods. Optionally, the program product is a computer program product.

[0340] The disclosure further proposes a computer program, which, when running on a computer, causes the computer to perform any one of the above methods.

[0341] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. The disclosure is intended to cover any variations, uses or adaptations of the disclosure following the general principles thereof and including such departures from the present disclosure as come within known use or custom in the art to which the disclosure pertains. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the disclosure are indicated by the following claims.

[0342] It should be understood that the present disclosure is not limited to the precise structures described and shown in the drawings, and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims appended hereto.

Claims

1. A communication method characterized by comprising: The method is performed by a first device, and the method comprises: sending a first signal; wherein the first signal is a reference signal for device sensing; wherein a length of a first period is greater than a length of a radio frame, the first period being a repetition period of a first sequence to which the first signal corresponds.

2. The method of claim 1, wherein, A length of a second period is less than or equal to the length of the first period, the second period being a time-frequency resource allocation period of the first signal.

3. The method according to claim 1 or 2, characterized in that, The method further comprises any one of the following: determining the first sequence based on a second sequence and a phase rotation factor; wherein the first sequence on different symbols corresponds to different phase rotation factors; determining the first sequence based on part of elements in a second sequence; wherein the first sequence on different symbols corresponds to different elements in the second sequence; determining the first sequence based on part of elements in a first pseudo-random sequence; wherein the first sequence on different symbols corresponds to different elements in the first pseudo-random sequence.

4. The method of claim 3, wherein, The second sequence satisfies at least one of the following: a length of a third period is equal to a length of a radio frame; wherein the third period is a repetition period of the second sequence; belonging to a second pseudo-random sequence.

5. The method of claim 4, wherein, The second pseudo-random sequence is reinitialized on each symbol, and initialization parameters of the second pseudo-random sequence comprise at least one of the following: an identifier of the first sequence; a time slot index of a symbol in which the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within a time slot; a number of time slots within a radio frame.

6. The method according to any one of claims 3-5, characterized in that, The phase rotation factor is equal to a first element in the second sequence; or The phase rotation factor is an element in a third sequence.

7. The method of claim 6, wherein, The method further comprises: determining the phase rotation factor based on p; wherein the p is a symbol index to which the first signal corresponds.

8. The method of claim 6, wherein, The third sequence satisfies at least one of the following: belonging to a third pseudo-random sequence; belonging to a sequence of a first type; wherein the first type comprises a type other than a pseudo-random type; a length being determined based on the first period.

9. The method of claim 8, wherein, The third pseudo-random sequence is reinitialized according to each of the first periods, and initialization parameters of the third pseudo-random sequence comprise an identifier of the first sequence.

10. The method of claim 8, wherein, The method further comprises: a number of the third sequences is a plurality, and one of the third sequences in which the phase rotation factor is located is determined based on first information; wherein the first information comprises an identifier of the first sequence.

11. The method of claim 3, wherein, The determining the first sequence based on part of elements in a second sequence comprises: determining a second element in the second sequence based on p; wherein the p is a symbol index to which the first signal corresponds; the determining the first sequence comprises M elements in the second sequence starting from the second element; wherein the M is a number of subcarriers occupied by the first signal within a symbol.

12. The method of claim 3, wherein, The determining the first sequence based on part of elements in a first pseudo-random sequence comprises: determining a third element in the first pseudo-random sequence based on p; The first sequence comprises M elements in the first pseudo-random sequence starting from the third element; wherein the M is a number of subcarriers occupied by the first signal in one symbol.

13. The method of claim 12, wherein, The first pseudo-random sequence is reinitialized on each symbol, and initialization parameters of the first pseudo-random sequence comprise at least one of the following: an identifier of the first sequence; a time slot index of a symbol where the first signal is located in a radio frame; a symbol index of the first signal in a time slot; a number of symbols in one time slot; a number of time slots in one radio frame.

14. The method of any one of claims 7, 11 or 12, wherein, The method further comprises any one of the following: determining the p based on k, a first index, and a first offset value; wherein the first index is a symbol index of a symbol where the first signal is located in the first period; wherein k is a positive integer; determining the p based on at least one of a system frame number SFN, a time slot index of a symbol where the first signal is located in a radio frame, a symbol index of the first signal in a time slot, a number of symbols in one time slot, and a number of time slots in one radio frame; determining the p based on a second offset value.

15. A method of communication, comprising: The method is performed by a second device, and the method comprises: receiving a first signal; wherein the first signal is a reference signal for device sensing; wherein a length of a first period is greater than a length of one radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal.

16. The method of claim 15, wherein, a length of a second period is less than or equal to a length of the first period, and the second period is a time-frequency resource allocation period of the first signal.

17. The method according to claim 15 or 16, characterized in that, The first sequence is determined based on a second sequence and a phase rotation factor; wherein the first sequence on different symbols corresponds to different phase rotation factors; or The first sequence is determined based on part of elements in a second sequence; wherein the first sequence on different symbols corresponds to different elements in the second sequence; or The first sequence is determined based on part of elements in a first pseudo-random sequence; wherein the first sequence on different symbols corresponds to different elements in the first pseudo-random sequence.

18. The method of claim 17, wherein, The second sequence satisfies at least one of the following: a length of a third period is equal to a length of one radio frame; wherein the third period is a repetition period of the second sequence; The second pseudo-random sequence belongs to a second pseudo-random sequence.

19. The method of claim 18, wherein, The second pseudo-random sequence is reinitialized on each symbol, and initialization parameters of the second pseudo-random sequence comprise at least one of the following: an identifier of the first sequence; a time slot index of a symbol where the first signal is located in a radio frame; a symbol index of the first signal in a time slot; a number of symbols in one time slot; a number of time slots in one radio frame.

20. The method according to any one of claims 17-19, characterized by, The phase rotation factor is equal to a first element in the second sequence; or The phase rotation factor is an element in a third sequence.

21. The method of claim 20, wherein, The phase rotation factor is determined based on p; wherein the p is a symbol index corresponding to the first signal.

22. The method of claim 20, wherein, The third sequence satisfies at least one of the following: The third sequence belongs to a third pseudo-random sequence; The third sequence belongs to a sequence of a first type; wherein the first type comprises a type other than a pseudo-random type; a length of the third sequence is determined based on the first period.

23. The method of claim 22, wherein, The third pseudo-random sequence is reinitialized according to each of the first periods, and an initialization parameter of the third pseudo-random sequence comprises an identifier of the first sequence.

24. The method of claim 22, wherein, The method further comprises: The number of the third sequences is a plurality, and one of the third sequences in which the phase rotation factor is located is determined based on first information, wherein the first information comprises an identifier of the first sequence.

25. The method of claim 17, wherein, The first sequence comprises M elements in the second sequence starting from a second element, wherein the second element is determined based on p, and the p is a symbol index corresponding to the first signal; and wherein the M is a number of subcarriers occupied by the first signal in one symbol.

26. The method of claim 17, wherein, The first sequence comprises M elements in the first pseudo-random sequence starting from a third element, wherein the third element is determined based on p, and the p is a symbol index corresponding to the first signal; and wherein the M is a number of subcarriers occupied by the first signal in one symbol.

27. The method of claim 26, wherein, The first pseudo-random sequence is reinitialized on each symbol, and an initialization parameter of the first pseudo-random sequence comprises at least one of the following: an identifier of the first sequence; a time slot index of the symbol in which the first signal is located within a radio frame; a symbol index of the first signal within a time slot; a number of symbols within one time slot; a number of time slots within one radio frame.

28. The method of any one of claims 21, 25, or 26, wherein, The p is determined based on k, a first index, and a first offset value, wherein the first index is a symbol index of the symbol in which the first signal is located within the first period; wherein k is a positive integer; or The p is determined based on at least one of a system frame number (SFN), a time slot index of the first signal within a radio frame, a symbol index of the first signal within a time slot, a number of symbols within one time slot, and a number of time slots within one radio frame; or The p is determined based on a second offset value.

29. A first device, comprising: comprising: a transceiver module configured to transmit a first signal; wherein the first signal is a reference signal used for device sensing; wherein a length of a first period is greater than a length of one radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal.

30. A second device, comprising: comprising: a transceiver module configured to receive a first signal; wherein the first signal is a reference signal used for device sensing; wherein a length of a first period is greater than a length of one radio frame, and the first period is a repetition period of a first sequence corresponding to the first signal.

31. A first device, comprising: comprising: one or more processors; wherein the processor is configured to perform the communication method of any one of claims 1-14.

32. A second device, comprising: comprising: one or more processors; wherein the processor is configured to perform the communication method of any one of claims 15-28.

33. A communication system, characterized by comprising: a first device configured to implement the communication method of any one of claims 1-14; a second device configured to implement the communication method of any one of claims 15-28.

34. A storage medium, the storage medium storing instructions, wherein, when the instructions are run on an electronic device, cause the electronic device to perform the communication method of any one of claims 1-14 or 15-28.

35. A computer program product comprising a computer program, characterised in that, The computer program is for implementing the communication method of any one of claims 1-14 or 15-28 when executed by a processor.

Images