Communication method, communication apparatus, and storage medium

Abstract

Provided in the present disclosure are a communication method, a communication apparatus, and a storage medium. The communication method comprises: receiving or transmitting a signal on a time-domain resource, wherein the time-domain resource comprises a plurality of symbols, cyclic prefixes used by the plurality of symbols comprise at least two of a first cyclic prefix, a second cyclic prefix and a third cyclic prefix, the length of the first cyclic prefix is less than the length of the third cyclic prefix, and the length of the first cyclic prefix is less than the length of the second cyclic prefix.

Description

Communication method, communication device, and storage medium

[0001] This application claims priority to Chinese patent application No. 202311071360.6, filed on August 23, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of communication technology, and in particular to a communication method, a communication device, and a storage medium. Background Art

[0003] Mobile communications have continued to evolve at a rate of one generation every ten years, progressing from the first generation (1G) to the fifth generation (5G). Each generational leap and technological advancement has significantly boosted industrial upgrading and economic and social development. From 1G to the second generation (2G), the transition from analog to digital communications was achieved, bringing mobile communications into every household. From 2G to 5G, the shift from voice to data services was achieved, with transmission speeds increasing hundreds of times, fueling the widespread adoption and prosperity of mobile internet applications.

[0004] Summary of the Invention

[0005] On the one hand, a communication method is provided, which includes: receiving or transmitting a signal on a time domain resource, the time domain resource includes multiple symbols, the cyclic prefixes used by the multiple symbols include at least two of a first cyclic prefix, a second cyclic prefix, and a third cyclic prefix, the length of the first cyclic prefix is ​​less than the length of the third cyclic prefix, and the length of the first cyclic prefix is ​​less than the length of the second cyclic prefix.

[0006] In another aspect, a communication device is provided, comprising: a communication module configured to transmit a signal on a time domain resource. The time domain resource comprises a plurality of symbols, wherein cyclic prefixes used by the plurality of symbols comprise at least two of a first cyclic prefix, a second cyclic prefix, and a third cyclic prefix, wherein a length of the first cyclic prefix is ​​less than a length of the third cyclic prefix, and a length of the first cyclic prefix is ​​less than a length of the second cyclic prefix.

[0007] In yet another aspect, a communication device is provided, comprising: a communication module configured to receive a signal on a time domain resource. The time domain resource comprises a plurality of symbols, wherein cyclic prefixes used by the plurality of symbols comprise at least two of a first cyclic prefix, a second cyclic prefix, and a third cyclic prefix, wherein a length of the first cyclic prefix is ​​less than a length of the third cyclic prefix, and a length of the first cyclic prefix is ​​less than a length of the second cyclic prefix.

[0008] On the other hand, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store computer program instructions executable by the processor; and the processor implements the above-mentioned communication method when executing the computer program instructions.

[0009] On the other hand, a computer-readable storage medium is provided, on which computer program instructions are stored. When the computer program instructions are executed on a computer (such as a communication device or a signal transmission device), the above-mentioned communication method is implemented.

[0010] In yet another aspect, a computer program product is provided. The computer program product includes computer program instructions, and the computer program instructions implement the above communication method when executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a schematic diagram of a 5G frame structure according to an embodiment of the present disclosure.

[0012] FIG2 is a schematic diagram of time slot lengths under different subcarrier spacing configurations according to an embodiment of the present disclosure.

[0013] FIG3 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0014] FIG4 is a flowchart of a communication method according to an embodiment of the present disclosure.

[0015] FIG5 is a time-frequency resource diagram according to an embodiment of the present disclosure.

[0016] FIG6 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure.

[0017] FIG7 is a schematic structural diagram of another communication device according to an embodiment of the present disclosure.

[0018] FIG8 is a schematic structural diagram of yet another communication device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0020] In the description of the present disclosure, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: only A, only B, and A and B. In addition, "at least one" means one or more, and "a plurality" means two or more. Words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0021] It should be noted that, in this disclosure, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this disclosure as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0022] With the rapid development of mobile Internet, new services, new businesses, new technologies and new devices are constantly emerging. 5G is difficult to meet the needs of flexible and diverse businesses in the future. There is an urgent need to develop the next generation mobile communication system, namely the sixth generation mobile communication technology (6G).

[0023] 6G is a conceptual wireless network mobile communications technology. The design of the 6G system is currently in the candidate technology solicitation phase, and no detailed design plan has been released. As a completely new system, the configuration of cyclic prefixes for time-frequency resources within 6G requires research and resolution.

[0024] New Radio (NR) is the 5G air interface standard. Its frame structure is based on a time and frequency resource grid. The NR frame structure mainly includes the following aspects.

[0025] (1) Frame: The NR frame structure consists of two main types of frames: normal frames and special frames. A normal frame consists of 10 subframes, each lasting 1 millisecond (ms), and is used to carry data and control information. The structure of special frames can be adjusted according to system configuration and is generally used for special transmission requirements.

[0026] (2) Subframe: In the NR frame structure, a normal frame consists of 10 subframes, each lasting 0.1 milliseconds. Each subframe can be further divided into different symbol slots, each lasting one orthogonal frequency division multiplexing (OFDM) symbol time. The subframe division is mainly to support different types of data transmission and multi-user multi-antenna communication requirements.

[0027] (3) Symbol slots: Each subframe is divided into 14 symbol slots, which are used to transmit data and control information. Under normal circumstances, each symbol slot lasts for one OFDM symbol time.

[0028] (4) OFDM Symbol: The NR frame structure uses OFDM technology. The duration of an OFDM symbol includes the effective symbol time and the cyclic prefix (CP) time. The duration of each OFDM symbol depends on the number of subcarriers and is typically 71.4 microseconds.

[0029] Resource Block: In the NR frame structure, a resource block (RB) is the smallest unit of resource allocation used for data and control information transmission. A resource block contains 12 subcarriers and 14 OFDM symbols, for a total of 1680 resource elements.

[0030] (5) Cyclic Prefix: The CP is formed by copying the signal at the end of an OFDM symbol to the beginning. There are two main lengths for the CP: a normal cyclic prefix and an extended cyclic prefix. The normal cyclic prefix is ​​shorter than the extended cyclic prefix. The cyclic prefix can be correlated with other multipath component information to obtain complete information. Furthermore, the cyclic prefix enables time estimation and frequency synchronization.

[0031] In general, the NR frame structure is a hierarchical structure consisting of frames, subframes, symbol slots, and OFDM symbols. This frame structure design can flexibly meet different communication requirements and support functions such as high-speed data transmission, low-latency communication, and multi-user multi-antenna communication.

[0032] For example, Figure 1 is a schematic diagram of the 5G frame structure provided by the present disclosure. As shown in Figure 1, although 5G NR supports multiple subcarrier spacings, the lengths of the radio frame and subframe are the same under different subcarrier spacing configurations. The radio frame length is 10ms and the subframe length is 1ms. The number of time slots contained in each subframe is different. In the case of a normal CP, the number of symbols contained in each time slot is the same, and both are 14. Figure 1 shows the case of subcarrier spacing = 15Khz (normal CP).

[0033] Under different subcarrier spacing configurations, the number of time slots included in a subframe is different. Since the length of the subframe remains unchanged, the length of the time slots included in the subframe is also different under different subcarrier spacing configurations.

[0034] For example, Table 1 provides the type of cyclic prefix and the number of symbols contained in a time slot under different subcarrier spacing configurations. The number of time slots in a radio frame and the number of time slots contained in a subframe

[0035] Table 1

[0036] For example, Figure 2 shows the length of time slots under different subcarrier spacing configurations provided by the present disclosure. Combining Table 1 with Figure 2, it can be seen that when the subcarrier spacing is 15 kHz (normal CP), a subframe has only one time slot, and a radio frame contains 10 time slots. The number of OFDM symbols contained in a time slot is 14.

[0037] When the subcarrier spacing is 30 kHz (normal CP), one subframe has 2 time slots, one radio frame includes 20 time slots, and one time slot includes 14 OFDM symbols.

[0038] When the subcarrier spacing is 60 kHz (normal CP), one subframe has 4 time slots, and a radio frame includes 40 time slots. One time slot includes 14 OFDM symbols.

[0039] When the subcarrier spacing is 120 kHz (normal CP), one subframe has 8 time slots, one radio frame includes 80 time slots, and one time slot includes 14 OFDM symbols.

[0040] When the subcarrier spacing is 240 kHz (normal CP), one subframe has 16 time slots, one radio frame includes 160 time slots, and one time slot includes 14 OFDM symbols.

[0041] When the subcarrier spacing is 480 kHz (normal CP), one subframe has 32 time slots, one radio frame includes 320 time slots, and one time slot includes 14 OFDM symbols.

[0042] As can be seen from the above description, the relevant 5G NR frame structure consists of 14 symbols per time slot in the standard CP mode and 12 symbols in the extended CP mode. As the subcarrier spacing increases, the time domain symbol length decreases. The CP length is as follows: The CP length for each symbol in the extended CP mode is the same as the CP length for the first and eighth symbols in the standard CP mode (this CP is 160k), which is larger than the CP length for other symbols (this CP is 144k). This design is primarily intended to round the time slot length to 1ms or one-nth of 1ms, where n is a power of 2, such as 2, 4, 8, or 16. Furthermore, to account for factors such as automatic gain control (AGC) estimation, the 160k CP is placed on the first symbol of each half of the time slot.

[0043] Where K is the sampling rate, and u is 0, 1, 2, 3, 4, or 5. When the subcarrier spacing is 15 kHz, u is 0; when the subcarrier spacing is 30 kHz, u is 1; when the subcarrier spacing is 60 kHz, u is 2; when the subcarrier spacing is 120 kHz, u is 3; when the subcarrier spacing is 240 kHz, u is 4; and when the subcarrier spacing is 480 kHz, u is 5.

[0044] To sum up, there are problems with the NR frame structure in the following scenarios.

[0045] (1) When the network performs joint sensing with multiple base stations, the CP of the relevant NR frame structure limits the distance between base stations. When the distance between base stations exceeds the protection range of the relevant CP, inter-symbol interference (ISI) occurs, resulting in reduced sensing accuracy. Therefore, to better perform multi-base station joint sensing, it is necessary to introduce a CP that is longer than the relevant NR CP.

[0046] (2) When a user equipment (UE) is transmitting data in an idle or inactive state based on uplink resources pre-configured by the base station, the UE cannot obtain the latest uplink synchronization adjustment (UL TA) sent by the base station before sending data. If the UE is in a mobile state, this will cause the UE's UL TA to change, resulting in the time when the UE's uplink data arrives at the base station and the time when the uplink data of other UEs arrive at the base station exceeding the protection range of the CP. The uplink data of the UE interferes with the uplink data of other UEs, resulting in a decrease in the probability of the base station successfully decoding the UE's uplink data and an increase in the probability of retransmission, which affects the network capacity and increases the terminal transmission delay and energy consumption.

[0047] (3) The CP of the uplink demodulation reference signal (UL DMRS) and sounding reference signal (SRS) of the relevant NR is the same as the CP length of the uplink data. When the base station uses UL DMRS and SRS to estimate the UL TA, the CP length of the UL DMRS and SRS limits the TA range that the base station can estimate. When the UL TA exceeds the CP length, the base station can only use the physical random access channel (PRACH) for estimation. However, PRACH requires more resources and has a relatively small bandwidth, which limits the uplink channel state that can be measured.

[0048] In view of this, the present disclosure provides a communication method for transmitting a signal on a time domain resource, wherein the time domain resource includes multiple symbols, and the cyclic prefixes used by the multiple symbols include at least two of a first cyclic prefix, a second cyclic prefix, and a third cyclic prefix, wherein the length of the first cyclic prefix is ​​less than the length of the third cyclic prefix, and the length of the first cyclic prefix is ​​less than the length of the second cyclic prefix. By using multiple cyclic prefixes of different lengths, the efficiency of network resource utilization is improved, the time domain resources occupied by the cyclic prefixes are reduced, and thus the performance of signal transmission is improved.

[0049] The technical solutions provided by the embodiments of the present disclosure can be applied to various mobile communication networks, for example, new radio (NR) mobile communication networks using fifth-generation mobile communication technology (5G), future mobile communication networks, or systems integrating multiple communication technologies, etc., but the embodiments of the present disclosure are not limited to this.

[0050] The network architecture of a mobile communication network (including but not limited to 3G, 4G, 5G, and future mobile communication networks) in the embodiments of the present disclosure may include a first communication node and a second communication node. In some examples, the first communication node may be a base station, and the second communication node may be a terminal. In other examples, the first communication node may be a terminal, and the second communication node may be a base station. In yet other examples, in a device-to-device communication scenario, the first communication node and the second communication node may both be terminals. The embodiments of the present disclosure are not limited thereto.

[0051] For example, taking the first communication node as a base station and the second communication node as a terminal, FIG3 shows a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG3, the communication system 10 includes multiple base stations (e.g., base station 21 and base station 22) and multiple terminals (e.g., terminal 31, terminal 32, terminal 33, and terminal 34). Multiple base stations and multiple terminals can be communicatively connected.

[0052] In some embodiments, a base station is used to provide wireless access services to multiple terminals. For example, a base station provides at least one service coverage area (also known as a cell). Terminals within this area can communicate with the base station via wireless signals to receive the wireless access services provided by the base station. The service coverage areas of base stations may overlap, and terminals within the overlapping areas can receive wireless signals from multiple base stations.

[0053] In some embodiments, a base station can connect to multiple terminal devices. For example, base station 21 connects to terminal 31 and terminal 32. Terminal 31 and terminal 32 can be located in the same cell or in different cells. In other words, a base station can provide network services to terminals in one cell or to terminals in multiple cells simultaneously.

[0054] In some embodiments, the base station can be a base station or an evolved base station (eNB or eNodeB) in LTE, long term evolution advanced (LTEA), a base station in a 5G network, or a base station in a future communication system (such as 6G, etc.), etc. The base station may include various macro base stations, micro base stations, home base stations, wireless remotes, reconfigurable intelligent surfaces (RISs), routers, wireless fidelity (WIFI) devices, or various network side devices such as primary cells and collaborative cells (secondary cells).

[0055] In some embodiments, the terminal can be a device with wireless transceiver capabilities, which can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on the water (such as a ship, etc.); it can also be deployed in the air (for example, on an airplane, a balloon, and a satellite, etc.). The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The embodiments of the present disclosure do not limit the application scenarios. The terminal may sometimes also be referred to as a user, user equipment (UE), access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication equipment, UE agent or UE device, etc., but the embodiments of the present disclosure are not limited to this.

[0056] It should be noted that Figure 3 is only an exemplary framework diagram. The number of devices included in Figure 3 and the names of each device are not restricted. In addition to the devices shown in Figure 3, the communication system may also include other devices, such as core network devices.

[0057] The application scenarios of the embodiments of the present disclosure are not limited. The system architecture and business scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art will appreciate that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are equally applicable to similar technical problems.

[0058] The present disclosure provides a communication method. As shown in FIG4 , the communication method includes the following S101 .

[0059] In S101 , a signal is received or transmitted on a time domain resource.

[0060] In some embodiments, the first communication node transmits a signal on the time domain resource; correspondingly, the second communication node receives a signal on the time domain resource.

[0061] In some other embodiments, the second communication node transmits a signal on the time domain resource; correspondingly, the first communication node receives a signal on the time domain resource.

[0062] The signal may include one or more signals, such as perception signals, positioning signals, data signals, control signaling, etc., which are not limited.

[0063] The time domain resources include multiple symbols, and the cyclic prefixes used by the multiple symbols include at least two of a first cyclic prefix, a second cyclic prefix, and a third cyclic prefix. The length of the first cyclic prefix is ​​less than the length of the third cyclic prefix, and the length of the first cyclic prefix is ​​less than the length of the second cyclic prefix.

[0064] In some embodiments, the time domain resource is any one of a radio frame, a subframe, a time slot, and a mini-time slot.

[0065] In some embodiments, the first cyclic prefix is ​​a normal cyclic prefix and the third cyclic prefix is ​​an extended cyclic prefix.

[0066] In some embodiments, the length of the second cyclic prefix is ​​less than the length of the third cyclic prefix, or the length of the second cyclic prefix is ​​greater than the length of the third cyclic prefix.

[0067] For example, the second cyclic prefix length is 512k·2 -u 、1240k·2 -u 、692k·2 -u 、418k·2 -u or 420k 2 -u .

[0068] In some embodiments, symbols corresponding to different cyclic prefixes have different lengths.

[0069] In other embodiments, symbols corresponding to different cyclic prefixes have the same length.

[0070] In some embodiments, the CP lengths of some symbols corresponding to the same cyclic prefix are the same.

[0071] For example, when the number of symbols corresponding to the second cyclic prefix is ​​3, the CP lengths of two symbols are the same, and the CP length of the remaining symbol is greater or less than the CP lengths of the two symbols. For example, the CP length of a symbol is 876k·2 -u and 874k·2 -u .

[0072] As another example, when the number of symbols corresponding to the second cyclic prefix is ​​10, 11, or 12, the CP lengths of the two symbols are the same, assuming that the length of the symbol is m, and the CP lengths of the remaining symbols are the same, assuming that the length of the symbol is n, then m is greater than or less than n, and both m and n are greater than 0. Alternatively, the CP lengths of 10, 11, or 12 symbols are all the same.

[0073] In some other embodiments, the CP lengths of symbols corresponding to the same cyclic prefix are the same.

[0074] For example, when the number of symbols corresponding to the second cyclic prefix is ​​3, the CP lengths of the three symbols are the same. For example, the CP length of the symbol is 874k·2 -u or 827k 2 -u or 821k·2 -u or 512k 2 -u .

[0075] In some embodiments, symbols using the second cyclic prefix are continuous in a time slot, or are indicated by signaling, or are distributed at intervals.

[0076] In some embodiments, symbols using the third cyclic prefix are continuous in a time slot, or are indicated by signaling, or are distributed at intervals.

[0077] In some embodiments, the time domain resources include at least one time slot, and the type of the time slot includes at least one of a first type time slot, a second type time slot, and a third type time slot. Symbols in the first type time slot all use a first cyclic prefix; symbols in the third type time slot all use a third cyclic prefix; symbols in the second type time slot all use at least two of the first cyclic prefix, the second cyclic prefix, and the third cyclic prefix, or symbols in the second type time slot all use the second cyclic prefix.

[0078] For example, all symbols in a time slot using a normal CP in NR use a normal CP, and all symbols in a time slot using an extended CP in NR use an extended CP.

[0079] In some embodiments, the length of the first cyclic prefix may be equal to the CP length of some symbols in the first type time slot. For example, the length of the first cyclic prefix is ​​equal to the sum of the CP lengths of the first p symbols in the first type time slot, or the length of the first cyclic prefix is ​​equal to the sum of the CP lengths of the last p symbols in the first type time slot, or the length of the first cyclic prefix is ​​equal to 144k·2 -u . p can be 11, 10, 9, 7, 5, 3, 2 or 1.

[0080] In some embodiments, the length of the second type slot is the same as the NR slot length.

[0081] In other embodiments, the length of the second type of time slot is different from the length of the NR time slot.

[0082] In some embodiments, the length of the second type slot is the same as the length of one symbol in NR.

[0083] In other embodiments, the length of the second type of time slot is different from the length of one symbol in NR.

[0084] In some embodiments, the second type time slot includes h symbols, a symbols use the first cyclic prefix, b symbols use the second cyclic prefix or the third cyclic prefix, h=a+b, and h, a, and b are positive integers.

[0085] In some embodiments, the symbol corresponding to the first cyclic prefix and the symbol corresponding to the second cyclic prefix in the second type time slot are fixed; or the symbol corresponding to the first cyclic prefix and the symbol corresponding to the third cyclic prefix in the second type time slot are fixed. For example, they are located at the last q symbols of a time slot, or the first q symbols of a time slot, or the first q symbols of a sub-time slot, or the last q symbols of a sub-time slot, where q is a positive integer.

[0086] Exemplarily, the second type of time slot includes 12 symbols, 2 symbols of the 12 symbols use the first cyclic prefix, 10 symbols use the second cyclic prefix or the third cyclic prefix, or, 4 symbols of the 12 symbols use the first cyclic prefix, 8 symbols use the second cyclic prefix or the third cyclic prefix, or, 12 symbols use the third cyclic prefix.

[0087] In another example, the second type of time slot includes 13 symbols, and the 13 symbols meet any one of the following situations: 10 symbols out of the 13 symbols use the first cyclic prefix, and 3 symbols use the second cyclic prefix; 9 symbols out of the 13 symbols use the first cyclic prefix, and 4 symbols use the second cyclic prefix; 5 symbols out of the 13 symbols use the first cyclic prefix, and 8 symbols use the second cyclic prefix; 11 symbols out of the 13 symbols use the first cyclic prefix, and 2 symbols use the second cyclic prefix; 13 symbols out of the 13 symbols use the second cyclic prefix; 3 symbols out of the 13 symbols use the first cyclic prefix, and 10 symbols use the second cyclic prefix; 2 symbols out of the 13 symbols use the first cyclic prefix, and 11 symbols use the second cyclic prefix; 1 symbol out of the 13 symbols uses the first cyclic prefix, and 12 symbols use the second cyclic prefix; 7 symbols out of the 13 symbols use the first cyclic prefix, and 6 symbols use the third cyclic prefix.

[0088] In another exemplary embodiment, the second type of time slot includes 6 symbols, all 6 symbols use the third cyclic prefix, or, 1 symbol among the 6 symbols uses the first cyclic prefix, and 5 symbols use the second cyclic prefix or the third cyclic prefix.

[0089] In some embodiments, there are one or more guard intervals in the second type time slot, and the position of the guard interval in the second type time slot includes at least one of the following: the guard interval is located after the last symbol of the second type time slot; the guard interval is located in front of the first symbol of the second type time slot; the guard interval is located in front of the first symbol using the second cyclic prefix or the third cyclic prefix in the second type time slot; the guard interval is located in front of the first symbol using the first cyclic prefix in the second type time slot; the guard interval is located after the last symbol using the first cyclic prefix in the second type time slot; the guard interval is located after the last symbol using the second cyclic prefix or the third cyclic prefix in the second type time slot.

[0090] In other embodiments, a physical channel occupies h symbols, a symbols use the first cyclic prefix, and b symbols use the second cyclic prefix or the third cyclic prefix, where h = a + b, and h, a, and b are positive integers. The physical channel can be a physical downlink shared channel, a physical uplink shared channel, a physical downlink control channel, a physical uplink control channel, a physical broadcast channel, or a physical multicast channel. Different cyclic prefixes can correspond to the same subcarrier spacing or different subcarrier spacing; alternatively, some symbols of the physical shared channel use the first cyclic prefix, and some symbols use the second cyclic prefix or the third cyclic prefix.

[0091] In some embodiments, a first communication node transmits first signaling, and a second communication node receives the first signaling in response. The first signaling is used to indicate the location of a second type of time slot in a time domain resource and / or the location of a symbol using a second cyclic prefix. Thus, the second communication node can determine the location of the second type of time slot in the time domain resource and / or the location of a symbol using the second cyclic prefix based on the first signaling.

[0092] In some embodiments, the first signaling is one of the following: control information carried by a physical control channel, system information block (SIB) signaling, media access control (MAC) signaling, and radio resource control (RRC) signaling.

[0093] In some embodiments, after determining, according to the first signaling, the symbols using the second cyclic prefix in the time domain resources, the remaining symbols use the first cyclic prefix or the third cyclic prefix.

[0094] In some embodiments, after determining the time slots using the second cyclic prefix in the second type time slots in the time domain resources according to the first signaling, the time slots other than the time slots using the second cyclic prefix in the second type time slots use the first cyclic prefix or the third cyclic prefix.

[0095] In some embodiments, after determining the second type time slot in the time domain resource and the symbols using the second cyclic prefix in the second type time slot according to the first signaling, the other symbols except the symbols of the second cyclic prefix in the second type time slot use the first cyclic prefix or the third cyclic prefix.

[0096] In some embodiments, a first communication node transmits second signaling; correspondingly, a second communication node receives the second signaling. The second signaling is used to indicate the type of time slot in the time domain resource and / or the cyclic prefix used by the symbol. Thus, the second communication node can determine the type of time slot in the time domain resource and / or the cyclic prefix used by the symbol based on the second signaling. Time slots include uplink time slots and / or downlink time slots. Symbols include uplink symbols and / or downlink symbols.

[0097] In some embodiments, the second signaling is one of the following: control information carried by a physical control channel, system information block SIB signaling, MAC signaling, and RRC signaling.

[0098] In some embodiments, the second signaling includes at least one of first bitmap information, second bitmap information, a period, and a starting position. The first bitmap information includes multiple first indicator bits, where the i-th first indicator bit is used to indicate the type of the i-th time slot in the time domain resource, where i is a non-negative integer; the second bitmap information includes multiple second indicator bits, where the j-th second indicator bit is used to indicate the cyclic prefix used by the j-th symbol in the time domain resource, where j is a non-negative integer. The number of first indicator bits is 10, 20, 40, 80, or 160, etc. The starting position is used to indicate the time slot position corresponding to the first first indicator bit in the first bitmap information, or the symbol position corresponding to the first second indicator bit in the second bitmap information.

[0099] In some embodiments, the starting position is a fixed value.

[0100] In some embodiments, the starting position is different in different periods and is determined according to the second signaling received in different periods.

[0101] In some embodiments, the position of the symbol using the second cyclic prefix in the time domain resource of each cycle length within multiple cycle lengths is determined based on the second bitmap information and the period. For example, the second bitmap information includes multiple second indicator bits, and the j-th second indicator bit is 0 to indicate the second cyclic prefix used by the j-th symbol in the time domain resource of each cycle length. The number of second indicator bits included in the second bitmap information can be 14*n, 12*n, 13*n, 10*n, or 7*n, where n is a positive integer. The period can be 10, 20, 40, 80, or 160, etc., and the period can also be other positive integer values.

[0102] In some other embodiments, the second signaling includes a symbol index and a period; and based on the symbol index and the period, a position of a symbol using the second cyclic prefix in a time domain resource of each period length within a plurality of period lengths is determined.

[0103] In some embodiments, each time slot of the time domain resource includes two sub-time slots, each sub-time slot being equal to half of the time slot. The cyclic prefix corresponding to each sub-time slot of the time domain resource is determined based on the third bitmap information. The third bitmap information includes multiple third indicator bits, the kth third indicator bit being used to indicate whether the cyclic prefix used by the kth sub-time slot in the time domain resource is the first cyclic prefix or the third cyclic prefix, where k is a non-negative integer. The number of third indicator bits can be 10, 20, 40, 80, or 160, etc. For example, the kth third indicator is 0 to indicate that the cyclic prefix used by the kth sub-time slot in the time domain resource is the first cyclic prefix, and the kth third indicator is 1 to indicate that the cyclic prefix used by the kth sub-time slot in the time domain resource is the third cyclic prefix.

[0104] In some embodiments, a cyclic prefix corresponding to a signal is determined according to the second signaling, and the signal is received or transmitted.

[0105] In some embodiments, when a signal carries data to be transmitted by a communication node in a non-connected state, a cyclic prefix corresponding to the signal is determined according to RRC signaling or SIB signaling. The non-connected state includes an idle state, an inactive state, or other new non-connected states.

[0106] In some embodiments, when the signal is a perception signal, a positioning signal, or an SRS, the cyclic prefix corresponding to the signal is determined based on cyclic prefix configuration signaling, which is carried in RRC signaling or SIB signaling. For one or more perception signals, each perception signal has independent cyclic prefix configuration signaling; for one or more positioning signals, each positioning signal has independent cyclic prefix configuration signaling; and for one or more SRSs, each SRS has independent cyclic prefix configuration signaling.

[0107] Exemplarily, when the uplink signal transmits connection state data, the uplink signal uses the first cyclic prefix; when the uplink signal is used for the sensing function or positioning function or SRS or UL DMRS, the uplink signal uses the second cyclic prefix; or, when the uplink signal transmits SRS or UL DMRS, the uplink signal uses the first cyclic prefix; when the uplink signal is used for the sensing function or positioning function, the uplink signal uses the second cyclic prefix; or, the uplink signal used for the sensing function or positioning function on some time slots uses the second cyclic prefix, and the uplink signal used for the sensing function or positioning function on some time slots uses the first cyclic prefix. Whether the uplink signal used for the sensing function or positioning function uses the second cyclic prefix or the first cyclic prefix, and the time slot of the second cyclic prefix are configured by base station signaling. The remaining time slots use the first cyclic prefix.

[0108] In another example, when the uplink signal transmits connection state data, the uplink signal uses the first cyclic prefix; when the uplink signal is used for the sensing function or the positioning function or the SRS or the UL DMRS, the uplink signal uses the third cyclic prefix; or, when the uplink signal transmits the SRS or the UL DMRS, the uplink signal uses the first cyclic prefix; when the uplink signal is used for the sensing function or the positioning function, the uplink signal uses the third cyclic prefix; or, the uplink signal used for the sensing function or the positioning function on some time slots uses the third cyclic prefix, and the uplink signal used for the sensing function or the positioning function on some time slots uses the first cyclic prefix. Whether the uplink signal used for the sensing function or the positioning function uses the third cyclic prefix or the first cyclic prefix, and the time slot of the third cyclic prefix are configured by base station signaling. The remaining time slots use the first cyclic prefix.

[0109] In some embodiments, when the signal is a physical control channel or a physical shared channel, the cyclic prefix of the symbol carrying the physical control channel or the physical shared channel is determined according to the cyclic prefix of the symbol carrying the synchronization channel.

[0110] Exemplarily, the cyclic prefix of the physical downlink shared channel is determined according to downlink control information carried by the physical downlink control channel.

[0111] In some embodiments, the physical shared channel uses a first cyclic prefix for transmission in the first time slot and a second cyclic prefix for transmission in the second time slot; or, the physical shared channel uses a first cyclic prefix for transmission in the first time slot and a third cyclic prefix for transmission in the second time slot; or, the physical shared channel uses a second cyclic prefix for transmission in the first time slot and a third cyclic prefix for transmission in the second time slot; or, the physical shared channel uses a third cyclic prefix or a second cyclic prefix for transmission in an idle state or an inactive state and uses a first cyclic prefix for transmission in a connected state. The physical shared channel includes a physical uplink shared channel and / or a physical downlink shared channel.

[0112] In some embodiments, the physical shared channel uses a first cyclic prefix for transmission of the first symbol in the target time slot and a second cyclic prefix for transmission of the second symbol in the target time slot; alternatively, the physical shared channel uses a first cyclic prefix for transmission of the first symbol in the target time slot and a third cyclic prefix for transmission of the second symbol in the target time slot; alternatively, the physical shared channel uses a second cyclic prefix for transmission of the first symbol in the target time slot and a third cyclic prefix for transmission of the second symbol in the target time slot. The physical shared channel includes a physical uplink shared channel and / or a physical downlink shared channel.

[0113] In some embodiments, in the time domain resources, the type of the uplink timeslot and the type of the downlink timeslot are independently configured; or, the type of the uplink timeslot is determined according to the type of the downlink timeslot.

[0114] In some embodiments, in time domain resources, the cyclic prefix of the uplink symbol and the cyclic prefix of the downlink symbol are independently configured; or, the cyclic prefix of the uplink symbol is determined according to the cyclic prefix of the downlink symbol.

[0115] In some examples, the physical uplink shared channel uses the second cyclic prefix or the third cyclic prefix, and the physical downlink shared channel uses the first cyclic prefix. In one implementation, the cyclic prefix of the physical downlink shared channel is determined based on the subcarrier spacing or a default value (not indicated by signaling), while the cyclic prefix of the physical uplink shared channel is determined by signaling. In another implementation, the cyclic prefix of the physical downlink shared channel and the cyclic prefix of the physical uplink shared channel are each indicated by signaling. This example is only one configuration result.

[0116] In other examples, the physical downlink shared channel uses the second cyclic prefix or the third cyclic prefix, and the physical uplink shared channel uses the first cyclic prefix. In one implementation, the cyclic prefix of the physical uplink shared channel is determined based on the subcarrier spacing or a default value (not indicated by signaling), while the cyclic prefix of the physical downlink shared channel is determined by signaling. In another implementation, the cyclic prefix of the physical downlink shared channel and the cyclic prefix of the physical uplink shared channel are indicated by signaling respectively. This example is only one configuration result.

[0117] In some examples, the UL DMRS, SRS, or positioning uses the second cyclic prefix or the third cyclic prefix, and the physical downlink shared channel uses the first cyclic prefix. Alternatively, the sensing signal uses the second cyclic prefix or the third cyclic prefix, and the physical shared channel uses the first cyclic prefix. In one implementation method, the cyclic prefix of the physical shared channel is determined according to the subcarrier spacing or a default value (not indicated by signaling), and the cyclic prefix of the signal (UL DMRS, SRS, positioning signal, or sensing signal) is determined according to signaling. In another implementation method, the cyclic prefix of the physical shared channel and the cyclic prefix of the signal (UL DMRS, SRS, positioning signal, or sensing signal) are respectively indicated by signaling. This example is only a configuration result.

[0118] In some embodiments, SIB signaling, RRC messages, or downlink control information (DCI carried by the PDCCH) indicates the timeslot type (including the cyclic prefix) and / or symbol type (including the cyclic prefix); a channel or signal determines the cyclic prefix it uses based on the timeslot type and / or symbol type. Uplink and downlink timeslots may be indicated separately, or they may be indicated uniformly based on the timeslot.

[0119] For example, a 40-bit bitmap indicates the types of 40 time slots, and each bit represents whether it is a first type time slot (first cyclic prefix or third cyclic prefix) and a second type time slot. The signal or channel determines its cyclic prefix type according to the type of the time slot it is in. A 140-bit bitmap indicates the cyclic prefix type of 140 symbols in 10 time slots, and each bit represents whether it is the first cyclic prefix or the second cyclic prefix, or each bit represents whether it is the first cyclic prefix or the third cyclic prefix, or each bit represents whether it is the second cyclic prefix or the third cyclic prefix, and the signal or channel determines its cyclic prefix type according to the type of the symbol it is in. The two indication methods can also be combined. For example, the time slot bitmap indicates the time slot type, and the time slot type includes the first type time slot and the second type time slot. The symbol bitmap further indicates the cyclic prefix type corresponding to the symbol in the second type time slot.

[0120] In some embodiments, the sum of the guard interval, the cyclic prefix, and the symbol length is the same as or close to the length of one slot.

[0121] In some embodiments, different cyclic prefixes correspond to symbols with different subcarrier spacings.

[0122] In some embodiments, different cyclic prefixes correspond to symbols with the same subcarrier spacing.

[0123] In some embodiments, the first communication node sends third signaling; correspondingly, the second communication node receives the third signaling. The third signaling is used to indicate the subcarrier spacing and / or cyclic prefix supported by the time domain resource. Thus, the second communication node can determine the subcarrier spacing and / or cyclic prefix supported by the time domain resource based on the third signaling.

[0124] In some embodiments, the third signaling is RRC signaling.

[0125] In some embodiments, the first communication node transmits fourth signaling; correspondingly, the second communication node receives the fourth signaling. The fourth signaling is used to indicate the subcarrier spacing and / or cyclic prefix used for the time domain resources, as well as the symbol position corresponding to the used subcarrier spacing and / or cyclic prefix. Thus, the second communication node can determine the used subcarrier spacing and / or cyclic prefix, as well as the symbol position corresponding to the used subcarrier spacing and / or cyclic prefix, based on the fourth signaling.

[0126] In some embodiments, the fourth signaling is physical downlink control information.

[0127] In some embodiments, each of the multiple channel types corresponds to multiple subcarrier spacings. The multiple channel types include Physical Downlink Shared Channel (PDSCH), Physical Uplink Shared Channel (PUSCH), Channel State Information Reference Signal (CSI-RS), SRS and Phase Reference Signal (PR-RS). This can avoid defining the switching interval in symbols when switching uplink and downlink, and the uplink and downlink switching time may only occupy a part of the duration of a symbol, resulting in the remaining resources of the guard interval being unable to be used, resulting in resource waste. Because there are multiple subcarrier spacings, there are multiple symbol lengths, and there will also be multiple cyclic prefixes.

[0128] For example, as shown in Figure 5, a PUSCH occupies parts A and B, the symbols of part A use a subcarrier spacing of 30KHz and a corresponding cyclic prefix, and the symbols of part B use a subcarrier spacing of 15KHz and a corresponding cyclic prefix; or, SRS uses a subcarrier spacing of 15KHz and a corresponding cyclic prefix when transmitting part A, and SRS uses a subcarrier spacing of 30KHz and a corresponding cyclic prefix when transmitting part B.

[0129] Exemplarily, when the uplink signal transmits connected state data, the uplink signal uses the first cyclic prefix; when the uplink signal transmits idle state (non-connected state) data, the uplink signal uses the second cyclic prefix or the third cyclic prefix. For example, one implementation method is that the cyclic prefix of the connected state physical uplink shared channel is determined according to the subcarrier spacing or the default value (non-signaling indication), and the cyclic prefix of the idle state or inactive state (non-connected state) physical uplink shared channel is determined according to signaling; another implementation method is that the cyclic prefix of the idle state or inactive state (non-connected state) physical uplink shared channel and the cyclic prefix of the connected state physical uplink shared channel are respectively indicated by signaling. This example is only a configuration result.

[0130] For example, in the 2-step PRACH process, when MsgA is transmitted, the preamble is no longer transmitted, and only the PUSCH is transmitted. The PUSCH symbols use the second or third cyclic prefix, while the PUSCH symbols transmitted in the connected state use the first cyclic prefix. Alternatively, during the access process, some or all PUSCH symbols use the second cyclic prefix, while the PUSCH symbols transmitted in the connected state use the first cyclic prefix. Alternatively, during the access process, some or all PUSCH symbols use the second cyclic prefix, while the PUSCH symbols transmitted in some time slots in the connected state use the first cyclic prefix, while the PUSCH symbols transmitted in some time slots use the second cyclic prefix.

[0131] When the PUSCH of the access process adopts the second cyclic prefix, other PUSCHs also adopt the second cyclic prefix when they are transmitted on symbols corresponding to the PUSCH adopting the second cyclic prefix.

[0132] For example, when the PUSCH resources using the second cyclic prefix are periodically preconfigured by the base station, if the dynamically scheduled PUSCH is transmitted on the PUSCH corresponding symbol of the second cyclic prefix, the dynamically scheduled PUSCH is also transmitted using the second cyclic prefix by default; otherwise, it is transmitted using the first cyclic prefix.

[0133] For example, one implementation method is that the cyclic prefix of the connected state PUSCH is determined according to the subcarrier spacing or the default value (non-signaling indication), and the cyclic prefix of the PUSCH in the first step of access is determined according to signaling. Another way is that the cyclic prefix of the PUSCH in the first step of access and the cyclic prefix of the connected state PUSCH are respectively indicated by signaling. This example is only a configuration.

[0134] In another example, when the uplink signal transmits connected state data, the uplink signal uses the first cyclic prefix, and when the uplink signal transmits idle state data, the uplink signal uses the third cyclic prefix. The idle state includes the non-connected state, the idle state or inactive state of the related NR, and the non-connected state of 6G.

[0135] For example, when transmitting 2-step PRACH, MsgA does not transmit the preamble, but only the PUSCH. The PUSCH symbols use the third cyclic prefix, while the PUSCH symbols transmitted in the connected state use the first cyclic prefix. Alternatively, during the access process, some or all PUSCH symbols use the third cyclic prefix, while the PUSCH symbols transmitted in the connected state use the first cyclic prefix. Alternatively, during the access process, some or all PUSCH symbols use the third cyclic prefix, while the PUSCH symbols transmitted in the connected state use the first cyclic prefix. Alternatively, during the access process, some or all PUSCH symbols use the third cyclic prefix, while the PUSCH symbols transmitted on some time slots in the connected state use the first cyclic prefix, while the PUSCH symbols transmitted on some time slots use the third cyclic prefix. Whether the PUSCH uses the third cyclic prefix or the first cyclic prefix is ​​configured by base station signaling.

[0136] When the PUSCH of the access process adopts the third cyclic prefix, when other PUSCHs are transmitted on symbols corresponding to the PUSCH adopting the third cyclic prefix, the third cyclic prefix is ​​also adopted;

[0137] For example, when the PUSCH resources using the third cyclic prefix are periodically preconfigured by the base station, if the dynamically scheduled PUSCH is transmitted on the PUSCH corresponding symbol of the third cyclic prefix, it is assumed that the dynamically scheduled PUSCH also uses the third cyclic prefix for transmission; otherwise, it uses the first cyclic prefix for transmission.

[0138] In another exemplary embodiment, a PUSCH symbol includes a symbol for transmitting data corresponding to the PUSCH and a symbol for transmitting a UL DMRS corresponding to the PUSCH. One or more UL DMRS corresponding symbols of the PUSCH use the second cyclic prefix, and the symbol corresponding to the PUSCH transmission data uses the first cyclic prefix; or, a PUSCH symbol includes a symbol for transmitting data corresponding to the PUSCH and a symbol for transmitting the UL DMRS corresponding to the PUSCH, one or more UL DMRS corresponding symbols of the PUSCH use the third cyclic prefix, and the symbol corresponding to the PUSCH transmission data uses the first cyclic prefix; or, part of the uplink signal transmitting SRS uses the first cyclic prefix, and part of the uplink signal transmitting SRS uses the second cyclic prefix; or, part of the uplink signal transmitting SRS uses the first cyclic prefix, and part of the uplink signal transmitting SRS uses the third cyclic prefix.

[0139] Exemplarily, the base station transmits cyclic prefix indication signaling, such as SIB signaling or RRC signaling, where the cyclic prefix indication signaling includes bitmap information, the bitmap information includes multiple indication bits, and the rth indication bit is used to indicate whether the cyclic prefix used by the rth sub-time slot in the time domain resource is the first cyclic prefix (e.g., the normal CP of NR) or the third cyclic prefix (e.g., the extended CP of NR), where r is a non-negative integer. The base station selects the corresponding cyclic prefix to transmit data, or receives data sent by the terminal, based on the cyclic prefix type of the sub-time slot where the data is located.

[0140] The terminal receives cyclic prefix indication signaling, such as SIB signaling or RRC signaling, from the base station. The cyclic prefix indication signaling includes bitmap information, which contains multiple indicator bits. The rth indicator bit is used to indicate whether the cyclic prefix used for the rth subslot in the time domain resource is the first cyclic prefix (e.g., the normal CP of NR) or the third cyclic prefix (e.g., the extended CP of NR), where r is a non-negative integer. Based on the cyclic prefix type of the subslot containing the data, the terminal selects the corresponding cyclic prefix to transmit data or receives data sent by the base station.

[0141] If cyclic prefix indication signaling is not received, a default cyclic prefix type is used; if cyclic prefix indication signaling is received, the cyclic prefix type is determined based on the cyclic prefix indication signaling. The cyclic prefixes for uplink and downlink can be indicated separately, such as: the downlink cyclic prefix is ​​determined by the default value and the uplink is determined by cyclic prefix indication signaling, or the uplink cyclic prefix is ​​determined by the default value and the downlink is determined by cyclic prefix indication signaling, or the uplink and downlink cyclic prefix are determined by their respective corresponding cyclic prefix indication signaling.

[0142] Based on this, by adopting cyclic prefixes of various lengths, the utilization efficiency of network resources can be improved, the time domain resources occupied by the cyclic prefix can be reduced, and thus the performance of signal transmission can be improved.

[0143] The above mainly introduces the scheme of the embodiment of the present disclosure from the perspective of method. A communication device is also shown below for executing the communication method in any of the above embodiments and their implementation methods. It can be understood that the communication device includes hardware structures and / or software modules corresponding to the execution of various functions for the communication method; those skilled in the art should easily realize that, in combination with the algorithm steps of the various examples described in the embodiments of the present disclosure, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present disclosure.

[0144] The embodiments of the present disclosure can divide the functional modules of the communication device according to the above-mentioned method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one functional module. The above-mentioned integrated modules can be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiments of the present disclosure is schematic and is only a logical functional division. In actual implementation, there may be other division methods. The following is an example of dividing each functional module corresponding to each function.

[0145] FIG6 shows a communication device according to an embodiment of the present disclosure. The communication device 60 includes a communication module 61 and a processing module 62 .

[0146] Communication module 61 is used to transmit signals on time domain resources, where the time domain resources include multiple symbols, and the cyclic prefixes used by the multiple symbols include at least two of a first cyclic prefix, a second cyclic prefix, and a third cyclic prefix, where the length of the first cyclic prefix is ​​less than the length of the third cyclic prefix, and the length of the first cyclic prefix is ​​less than the length of the second cyclic prefix.

[0147] In some embodiments, the time domain resource is any one of a radio frame, a subframe, a time slot, and a mini-time slot.

[0148] In some embodiments, the first cyclic prefix is ​​a normal cyclic prefix and the third cyclic prefix is ​​an extended cyclic prefix.

[0149] In some embodiments, the time domain resources include at least one time slot, and the type of the time slot includes at least one of a first type time slot, a second type time slot, and a third type time slot. Symbols in the first type time slot all use a first cyclic prefix; symbols in the third type time slot all use a third cyclic prefix; symbols in the second type time slot all use at least two of the first cyclic prefix, the second cyclic prefix, and the third cyclic prefix, or symbols in the second type time slot all use the second cyclic prefix.

[0150] In some embodiments, the processing module 62 is configured to determine, according to the first signaling, a position of a second type of time slot in the time domain resources and / or a position of a symbol using a second cyclic prefix.

[0151] In some embodiments, the processing module 62 is configured to determine the type of the time slot and / or the cyclic prefix used by the symbol in the time domain resource according to the second signaling.

[0152] In some embodiments, the second signaling includes at least one of first bitmap information, second bitmap information, a period, and a starting position. The first bitmap information includes a plurality of first indicator bits, wherein the i-th first indicator bit is used to indicate the type of the i-th time slot in the time domain resource, where i is a non-negative integer; and the second bitmap information includes a plurality of second indicator bits, wherein the j-th second indicator bit is used to indicate a cyclic prefix used by the j-th symbol in the time domain resource, where j is a non-negative integer.

[0153] In some embodiments, the second signaling is one of the following: control information carried by a physical control channel, system information block SIB signaling, medium access control MAC signaling, and radio resource control RRC signaling.

[0154] In some embodiments, the communication module 61 is configured to determine a cyclic prefix corresponding to a signal according to the second signaling, and receive or transmit the signal.

[0155] In some embodiments, the physical shared channel uses a first cyclic prefix for transmission in the first time slot, and the physical shared channel uses a second cyclic prefix for transmission in the second time slot; or, the physical shared channel uses a first cyclic prefix for transmission in the first time slot, and the physical shared channel uses a third cyclic prefix for transmission in the second time slot; or, the physical shared channel uses a second cyclic prefix for transmission in the first time slot, and the physical shared channel uses a third cyclic prefix for transmission in the second time slot; or, the physical shared channel uses the third cyclic prefix or the second cyclic prefix for transmission in an idle state or an inactive state, and the physical shared channel uses the first cyclic prefix for transmission in a connected state.

[0156] In some embodiments, the physical shared channel uses a first cyclic prefix for transmission in the first symbol of the target time slot and uses a second cyclic prefix for transmission in the second symbol of the target time slot; alternatively, the physical shared channel uses a first cyclic prefix for transmission in the first symbol of the target time slot and uses a third cyclic prefix for transmission in the second symbol of the target time slot; alternatively, the physical shared channel uses a second cyclic prefix for transmission in the first symbol of the target time slot and uses a third cyclic prefix for transmission in the second symbol of the target time slot; wherein the physical shared channel includes a physical uplink shared channel and / or a physical downlink shared channel.

[0157] In some embodiments, when a signal carries data to be transmitted by a communication node in a non-connected state, a cyclic prefix corresponding to the signal is determined according to RRC signaling or SIB signaling.

[0158] In some embodiments, when the signal is a perception signal, a positioning signal, or an SRS, the cyclic prefix corresponding to the signal is determined based on cyclic prefix configuration signaling, which is carried in RRC signaling or SIB signaling. For one or more perception signals, each perception signal has independent cyclic prefix configuration signaling; for one or more positioning signals, each positioning signal has independent cyclic prefix configuration signaling; and for one or more SRSs, each SRS has independent cyclic prefix configuration signaling.

[0159] In some embodiments, the signal is a physical control channel or a physical shared channel; the cyclic prefix of the symbol carrying the physical control channel or the physical shared channel is determined according to the cyclic prefix of the symbol carrying the synchronization channel.

[0160] In some embodiments, in the time domain resources, the type of the uplink timeslot and the type of the downlink timeslot are independently configured; or, the type of the uplink timeslot is determined according to the type of the downlink timeslot.

[0161] In some embodiments, in time domain resources, the cyclic prefix of the uplink symbol and the cyclic prefix of the downlink symbol are independently configured; or, the cyclic prefix of the uplink symbol is determined according to the cyclic prefix of the downlink symbol.

[0162] In some embodiments, the second type time slot includes h symbols, a symbols use the first cyclic prefix, b symbols use the second cyclic prefix or the third cyclic prefix, h = a + b, h, a, b are positive integers; or, the physical channel includes h symbols, a symbols use the first cyclic prefix, b symbols use the second cyclic prefix or the third cyclic prefix, h = a + b, h, a, b are positive integers.

[0163] In some embodiments, the second type time slot includes 12 symbols, 2 symbols of the 12 symbols use the first cyclic prefix, and 10 symbols use the second cyclic prefix or the third cyclic prefix, or, 4 symbols of the 12 symbols use the first cyclic prefix, 8 symbols use the second cyclic prefix or the third cyclic prefix, or, 12 symbols use the third cyclic prefix.

[0164] In some embodiments, the second type time slot includes 13 symbols, and the 13 symbols meet any one of the following situations: 10 symbols out of the 13 symbols use the first cyclic prefix, and 3 symbols use the second cyclic prefix; 9 symbols out of the 13 symbols use the first cyclic prefix, and 4 symbols use the second cyclic prefix; 5 symbols out of the 13 symbols use the first cyclic prefix, and 8 symbols use the second cyclic prefix; 11 symbols out of the 13 symbols use the first cyclic prefix, and 2 symbols use the second cyclic prefix; 13 symbols out of the 13 symbols use the second cyclic prefix; 3 symbols out of the 13 symbols use the first cyclic prefix, and 10 symbols use the second cyclic prefix; 2 symbols out of the 13 symbols use the first cyclic prefix, and 11 symbols use the second cyclic prefix; 1 symbol out of the 13 symbols uses the first cyclic prefix, and 12 symbols use the second cyclic prefix; 7 symbols out of the 13 symbols use the first cyclic prefix, and 6 symbols use the third cyclic prefix.

[0165] In some embodiments, the second type time slot includes 6 symbols, all 6 symbols use the third cyclic prefix, or 1 symbol among the 6 symbols uses the first cyclic prefix and 5 symbols use the second cyclic prefix or the third cyclic prefix.

[0166] In some embodiments, there are one or more guard intervals in the second type time slot, and the position of the guard interval in the second type time slot includes at least one of the following: the guard interval is located after the last symbol of the second type time slot; the guard interval is located in front of the first symbol of the second type time slot; the guard interval is located in front of the first symbol using the second cyclic prefix or the third cyclic prefix in the second type time slot; the guard interval is located in front of the first symbol using the first cyclic prefix in the second type time slot; the guard interval is located after the last symbol using the first cyclic prefix in the second type time slot; the guard interval is located after the last symbol using the second cyclic prefix or the third cyclic prefix in the second type time slot.

[0167] In some embodiments, symbols using the second cyclic prefix are continuous in a time slot, or are indicated by signaling, or are distributed at intervals.

[0168] In some embodiments, symbols using the third cyclic prefix are continuous in a time slot, or are indicated by signaling, or are distributed at intervals.

[0169] In some embodiments, symbols corresponding to different cyclic prefixes have different lengths.

[0170] In some embodiments, symbols corresponding to different cyclic prefixes have the same length.

[0171] In some embodiments, different cyclic prefixes correspond to symbols with different subcarrier spacings.

[0172] In some embodiments, symbols corresponding to different cyclic prefixes correspond to the same subcarrier spacing.

[0173] In some embodiments, the processing module 62 is configured to determine supported subcarrier spacing and / or cyclic prefix according to the third signaling.

[0174] In some embodiments, the processing module 62 is configured to determine the adopted subcarrier spacing and / or cyclic prefix, and the symbol position corresponding to the adopted subcarrier spacing and / or cyclic prefix according to the fourth signaling.

[0175] FIG7 shows another communication device according to an embodiment of the present disclosure. The communication device 70 includes a communication module 71 .

[0176] The communication module 71 is configured to receive signals on time domain resources. For details about time domain resources and signals, please refer to the above description and will not be repeated here.

[0177] In some embodiments, the communication module 71 is configured to send a first signaling, where the first signaling is used to indicate a second type of time slot position in the time domain resource and / or a symbol using a second cyclic prefix.

[0178] In some embodiments, the communication module 71 is configured to send a second signaling, where the second signaling is configured to indicate the type of a time slot in a time domain resource and / or a cyclic prefix used by a symbol.

[0179] The relevant contents of the first signaling and the second signaling are introduced above and will not be repeated here.

[0180] In the case of implementing the functions of the above-mentioned integrated modules in hardware, the embodiments of the present disclosure also provide a structure of another communication device, which is used to perform the communication method provided by the embodiments of the present disclosure. As shown in Figure 8, the communication device 800 includes: a communication interface 803, a processor 802, and a bus 804. In some embodiments, the communication device may also include a memory 801.

[0181] Processor 802 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of this disclosure. Processor 802 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of this disclosure. Processor 802 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, or a combination of a DSP and a microprocessor.

[0182] The communication interface 803 is used to connect to other devices via a communication network, such as Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0183] The memory 801 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0184] As an implementation, the memory 801 may exist independently of the processor 802. The memory 801 may be connected to the processor 802 via a bus 804 and used to store instructions or program codes. When the processor 802 calls and executes the instructions or program codes stored in the memory 801, the communication method provided in the embodiment of the present disclosure can be implemented.

[0185] In another implementation, the memory 801 may also be integrated with the processor 802 .

[0186] Bus 804 can be an Extended Industry Standard Architecture (EISA) bus, etc. Bus 804 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, FIG8 shows only one thick line, but this does not mean that there is only one bus or only one type of bus.

[0187] Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium), which stores computer program instructions. When the computer program instructions are executed on a computer, the computer executes the communication method described in any of the above embodiments.

[0188] In an exemplary embodiment, the computer may be the aforementioned signal transmission device, and the present disclosure does not limit the form of the computer.

[0189] In some examples, the computer-readable storage media described above may include, but are not limited to, magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0190] An embodiment of the present disclosure provides a computer program product comprising instructions. When the computer program product is run on a computer, the computer is enabled to execute the communication method described in any one of the above embodiments.

[0191] The technical solution provided by the disclosed embodiments improves network resource utilization efficiency and reduces the time domain resources occupied by cyclic prefixes by adopting multiple cyclic prefix lengths, thereby enhancing signal transmission performance. Furthermore, this solution facilitates flexible adjustment of cyclic prefixes on time domain resources used to transmit different signals based on demand and network conditions, thereby maximizing resource utilization and signal transmission performance.

[0192] The above is only a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A communication method, comprising: A signal is received or transmitted on a time domain resource, wherein the time domain resource includes a plurality of symbols, and cyclic prefixes used by the plurality of symbols include at least two of a first cyclic prefix, a second cyclic prefix, and a third cyclic prefix, wherein the length of the first cyclic prefix is ​​less than the length of the third cyclic prefix, and the length of the first cyclic prefix is ​​less than the length of the second cyclic prefix.

2. The method according to claim 1, wherein: The time domain resource is any one of a radio frame, a subframe, a time slot, and a mini-time slot.

3. The method according to claim 1, wherein: The first cyclic prefix is ​​a normal cyclic prefix, and the third cyclic prefix is ​​an extended cyclic prefix.

4. The method according to claim 1, wherein: The time domain resources include at least one time slot, and the type of the time slot includes at least one of a first type time slot, a second type time slot and a third type time slot; wherein, the symbols in the first type time slot all use the first cyclic prefix; the symbols in the third type time slot all use the third cyclic prefix; the symbols in the second type time slot use at least two of the first cyclic prefix, the second cyclic prefix and the third cyclic prefix, or the symbols in the second type time slot all use the second cyclic prefix.

5. The method according to claim 1, wherein: The position of the second type of time slot in the time domain resource and / or the position of the symbol using the second cyclic prefix is ​​determined according to the first signaling.

6. The method according to claim 1, wherein: The type of the time slot and / or the cyclic prefix used by the symbol in the time domain resource is determined according to the second signaling.

7. The method according to claim 6, wherein: The second signaling includes at least one of the first bitmap information, the second bitmap information, a period and a starting position; wherein the first bitmap information includes multiple first indicator bits, the i-th first indicator bit is used to indicate the type of the i-th time slot in the time domain resource, and i is a non-negative integer; the second bitmap information includes multiple second indicator bits, the j-th second indicator bit is used to indicate the cyclic prefix used by the j-th symbol in the time domain resource, and j is a non-negative integer.

8. The method according to claim 6, wherein: The second signaling is one of the following: control information carried by a physical control channel, system information block SIB signaling, medium access control MAC signaling, and radio resource control RRC signaling.

9. The method according to claim 6, wherein: Determine a cyclic prefix corresponding to the signal according to the second signaling, and receive or transmit the signal.

10. The method according to claim 1, wherein: A physical shared channel is transmitted using the first cyclic prefix in a first time slot, and the physical shared channel is transmitted using the second cyclic prefix in a second time slot; or, The physical shared channel is transmitted using the first cyclic prefix in the first time slot, and the physical shared channel is transmitted using the third cyclic prefix in the second time slot; or, The physical shared channel is transmitted using the second cyclic prefix in the first time slot, and the physical shared channel is transmitted using the third cyclic prefix in the second time slot; or, The physical shared channel uses the third cyclic prefix or the second cyclic prefix for transmission in an idle state or an inactive state, and uses the first cyclic prefix for transmission in a connected state.

11. The method according to claim 1, wherein: The first symbol of the physical shared channel in the target time slot is transmitted using the first cyclic prefix, and the second symbol of the target time slot is transmitted using the second cyclic prefix; or, The physical shared channel is transmitted using the first cyclic prefix in the first symbol of the target time slot, and the physical shared channel is transmitted using the third cyclic prefix in the second symbol of the target time slot; or, The physical shared channel is transmitted using the second cyclic prefix in a first symbol of the target time slot, and the physical shared channel is transmitted using the third cyclic prefix in a second symbol of the target time slot.

12. The method according to claim 1, wherein: In the case where the signal carries data to be transmitted by a communication node in a non-connected state, the cyclic prefix corresponding to the signal is determined according to RRC signaling or SIB signaling.

13. The method according to claim 1, wherein: When the signal is a perception signal, a positioning signal or a sounding reference signal SRS, the cyclic prefix corresponding to the signal is determined according to a cyclic prefix configuration signaling, and the cyclic prefix configuration signaling is carried in RRC signaling or SIB signaling; wherein, for one or more perception signals, each perception signal has an independent cyclic prefix configuration signaling; for one or more positioning signals, each positioning signal has an independent cyclic prefix configuration signaling; for one or more SRS, each SRS has an independent cyclic prefix configuration signaling.

14. The method according to claim 1, wherein: The signal is a physical control channel or a physical shared channel; the cyclic prefix of the symbol carrying the physical control channel or the symbol carrying the physical control channel is determined according to the cyclic prefix of the symbol carrying the synchronization channel.

15. The method according to claim 1, wherein: In the time domain resources, the type of the uplink time slot and the type of the downlink time slot are independently configured; or, the type of the uplink time slot is determined according to the type of the downlink time slot.

16. The method according to claim 1, wherein: In the time domain resources, the cyclic prefix of the uplink symbol and the cyclic prefix of the downlink symbol are independently configured; or, the cyclic prefix of the uplink symbol is determined according to the cyclic prefix of the downlink symbol.

17. The method according to claim 4, wherein: The second type time slot includes h symbols, wherein a symbols use the first cyclic prefix, and b symbols use the second cyclic prefix or the third cyclic prefix, wherein h=a+b, and h, a, and b are positive integers; or, the physical channel includes h symbols, wherein a symbols use the first cyclic prefix, and b symbols use the second cyclic prefix or the third cyclic prefix, wherein h=a+b, and h, a, and b are positive integers.

18. The method according to claim 17, wherein: The second type time slot includes 12 symbols, 2 symbols of the 12 symbols use the first cyclic prefix, 10 symbols use the second cyclic prefix or the third cyclic prefix, or, 4 symbols of the 12 symbols use the first cyclic prefix, 8 symbols use the second cyclic prefix or the third cyclic prefix, or, the 12 symbols use the third cyclic prefix.

19. The method according to claim 17, wherein: The second type time slot includes 13 symbols, and the 13 symbols satisfy any one of the following situations: Ten symbols of the 13 symbols use the first cyclic prefix, and three symbols use the second cyclic prefix; 9 symbols of the 13 symbols use the first cyclic prefix, and 4 symbols use the second cyclic prefix; Of the 13 symbols, 5 symbols use the first cyclic prefix, and 8 symbols use the second cyclic prefix; 11 symbols of the 13 symbols use the first cyclic prefix, and 2 symbols use the second cyclic prefix; 13 symbols among the 13 symbols use the second cyclic prefix; Among the 13 symbols, 3 symbols use the first cyclic prefix, and 10 symbols use the second cyclic prefix; Two symbols of the 13 symbols use the first cyclic prefix, and 11 symbols use the second cyclic prefix; One symbol among the 13 symbols adopts the first cyclic prefix, and 12 symbols adopt the second cyclic prefix; Among the 13 symbols, 7 symbols use the first cyclic prefix, and 6 symbols use the third cyclic prefix.

20. The method according to claim 17, wherein: The second type time slot includes 6 symbols, and the 6 symbols all use the third cyclic prefix, or, one symbol among the 6 symbols uses the first cyclic prefix, and five symbols use the second cyclic prefix or the third cyclic prefix.

21. The method according to claim 4, wherein: There are one or more guard intervals in the second type time slot, and the position of the guard interval in the second type time slot includes at least one of the following: The guard interval is located after the last symbol of the second type time slot; The guard interval is located before the first symbol of the second type time slot; The guard interval is located in front of the first symbol using the second cyclic prefix or the third cyclic prefix in the second type time slot; The guard interval is located in front of the first symbol using the first cyclic prefix in the second type time slot; The guard interval is located after the last symbol using the first cyclic prefix in the second type time slot; The guard interval is located after the last symbol using the second cyclic prefix or the third cyclic prefix in the second type time slot.

22. The method according to claim 1, wherein: Symbols using the second cyclic prefix are continuous in one time slot, or are indicated by signaling, or are distributed at intervals.

23. The method according to claim 1, wherein: Symbols using the third cyclic prefix are continuous in one time slot, or are indicated by signaling, or are distributed at intervals.

24. The method according to claim 1, wherein: Symbols corresponding to different cyclic prefixes have different lengths.

25. The method of claim 1, wherein: Symbols corresponding to different cyclic prefixes have the same length.

26. The method of claim 1, wherein: Different cyclic prefixes correspond to symbols with different subcarrier spacings.

27. The method of claim 1, wherein: Symbols corresponding to different cyclic prefixes correspond to the same subcarrier spacing.

28. The method of claim 1, wherein: The supported subcarrier spacing and / or cyclic prefix is ​​determined according to the third signaling.

29. The method of claim 24, wherein: The adopted subcarrier spacing and / or cyclic prefix, and the symbol position corresponding to the adopted subcarrier spacing and / or cyclic prefix are determined according to the fourth signaling.

30. A communication device, wherein: include: Memory and processor; The memory is coupled to the processor; The memory is used to store instructions executable by the processor; When the processor executes the instructions, the method according to any one of claims 1 to 29 is performed.

31. A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a communication device, the communication device is caused to perform the method according to any one of claims 1 to 29.

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