Transmission method and device of pssch

Abstract

The embodiment of the application discloses a PSSCH transmission method and device, and belongs to the technical field of communication. The PSSCH transmission method comprises the following steps: a terminal transmits a first SCI, the first SCI is carried by a PSCCH, and the first SCI is used for scheduling multiple PSSCHs; and the terminal transmits data of the multiple PSSCHs according to the first SCI.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a transmission method and device for a Physical Sidelink Shared Channel (PSSCH). Background Technology

[0002] Starting with release 12, the Long Term Evolution (LTE) system supports sidelinks, enabling direct data transmission between terminals without relying on network-side equipment. On a sidelink, terminals schedule the Physical Sidelink Shared Channel (PSSCH) to transmit sidelink data by sending Sidelink Control Information (SCI). However, since SCI can only schedule a single PSSCH transmission, it cannot fully utilize carrier time-frequency domain resources. Summary of the Invention

[0003] This application provides a PSSCH transmission method and device that can solve the problem of low carrier time-frequency domain resource utilization in scheduling PSSCH transmission in related technologies.

[0004] In a first aspect, a method for transmitting PSSCH is provided, comprising: a terminal transmitting a first SCI, the first SCI being carried by a PSCCH, the first SCI being used to schedule multiple PSSCHs; the terminal transmitting data of the multiple PSSCHs according to the first SCI.

[0005] Secondly, a PSSCH transmission device is provided, comprising: a communication module for transmitting a first SCI, the first SCI being carried by a PSCCH, the first SCI being used to schedule multiple PSSCHs; the communication module is further configured to transmit data of the multiple PSSCHs according to the first SCI.

[0006] Thirdly, a terminal is provided, the terminal including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the method as described in the first aspect.

[0007] Fourthly, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to transmit a first SCI, the first SCI is carried by a PSCCH, the first SCI is used to schedule multiple PSSCHs, and data of the multiple PSSCHs is transmitted according to the first SCI.

[0008] Fifthly, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the method as described in the first aspect.

[0009] In a sixth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect.

[0010] In a seventh aspect, a computer program / program product is provided, the computer program / program product being stored in a non-transient storage medium, the program / program product being executed by at least one processor to implement the method as described in the first aspect.

[0011] In this embodiment, the terminal can simultaneously schedule the transmission of multiple PSSCHs through the first SCI, which is beneficial for making full use of the time-frequency domain resources of the secondary link and saving terminal power consumption. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a wireless communication system according to an embodiment of this application;

[0013] Figure 2 This is a schematic flowchart of a PSSCH transmission method according to an embodiment of this application;

[0014] Figure 3 This is a schematic diagram of the structure of a PSSCH transmission device according to an embodiment of this application;

[0015] Figure 4 This is a schematic diagram of the structure of a communication device according to an embodiment of this application;

[0016] Figure 5 This is a schematic diagram of the structure of a terminal according to an embodiment of this application. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0018] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0019] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used in the systems and radio technologies mentioned above, as well as in other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description. These technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0020] Figure 1This diagram illustrates a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), etc. Wearable devices include smartwatches, wristbands, headphones, glasses, etc. It should be noted that this application does not limit the specific type of terminal 11. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), next-generation node B (gNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0021] The transmission method and device of PSSCH provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0022] like Figure 2 As shown, this application embodiment provides a PSSCH transmission method 200, which can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal, and the method includes the following steps.

[0023] S202: The terminal transmits the first sidelink control information (SCI), which is carried by the physical sidelink control channel (PSCCH). The first SCI is used to schedule data from multiple physical sidelink shared channels (PSSCH).

[0024] S204: The terminal transmits the data of the plurality of PSSCHs according to the first SCI.

[0025] In this embodiment, "transmission" can refer to both receiving and sending. For example, in S202, the terminal receives the first SCI from the peer terminal, and in S204, the terminal receives multiple PSSCH data from the peer terminal; or, in S202, the terminal sends the first SCI to the peer terminal, and in S204, the terminal sends multiple PSSCH data to the peer terminal; or, in S202, the terminal receives the first SCI from the peer terminal, and in S204, the terminal sends multiple PSSCH data to the peer terminal; or, in S202, the terminal sends the first SCI to the peer terminal, and in S204, the terminal receives multiple PSSCH data from the peer terminal.

[0026] The first SCI mentioned in the various embodiments of this application may be a first-stage SCI (1 st -stage SCI), the first-stage SCI is carried by PSCCH; the second SCI mentioned later can be the second-stage SCI (2 nd -stage SCI), the second stage SCI is carried by PSSCH.

[0027] In this embodiment, the transmission or monitoring period of the PSCCH can be configured by higher-layer signaling, which can be based on each resource pool. This higher-layer signaling may include, for example, Radio Resource Control (RRC) signaling. Optionally, before S202, the following step may be included: the terminal determines the transmission period (i.e., transmission or monitoring period) of the PSCCH according to the higher-layer signaling instruction.

[0028] The PSSCH transmission method provided in this application embodiment allows the terminal to schedule the transmission of multiple PSSCHs simultaneously through the first SCI, which is beneficial for making full use of the time-frequency domain resources of the secondary link and saving terminal energy consumption.

[0029] The PSSCH transmission method provided in this application embodiment can be applied in the high-frequency band of sidelink 52.6GHz to 71GHz, where new subcarrier spacing (SCS) may be introduced in the high-frequency communication, such as 480kHz and 960kHz.

[0030] Various embodiments of this application adjust or enhance the PSCCH. For example, by using a first SCI, the transmission of multiple PSSCHs can be scheduled simultaneously. This avoids the terminal needing to monitor the PSCCH in each time slot (especially for very short time slots), thereby reducing terminal implementation complexity and saving terminal power consumption. Correspondingly, by simultaneously scheduling the transmission of multiple PSSCHs through the first SCI, and by reducing the number of first SCIs, it is beneficial to make full use of carrier time-frequency domain resources.

[0031] The following will describe in detail the uses of the first SCI and the second SCI using some embodiments. It should be noted that the first SCI and the second SCI are described separately in the following embodiments. In fact, provided that there is no conflict in implementation, the subsequent embodiments can be freely combined to form more embodiments.

[0032] Optionally, the time slots occupied by multiple PSSCHs scheduled by the first SCI are consecutive, and the first SCI is used to indicate one of the following 1) and 2):

[0033] 1) The number of minimum scheduling granularities corresponding to the multiple PSSCHs, wherein the higher-layer signaling configures the terminal with the minimum scheduling granularity, and the minimum scheduling granularity is the minimum number of time slots occupied by the multiple PSSCHs. For example, the higher layer configures the minimum scheduling granularity of PSSCH to be 2 time slots, and the first SCI indicates scheduling 2 minimum scheduling granularities, that is, scheduling 4 time slots of PSSCH.

[0034] 2) The number of time slots occupied by the multiple PSSCHs. In this example, one PSSCH can occupy one time slot, so the number of multiple PSSCHs scheduled by the first SCI is equal to the number of time slots occupied by these multiple PSSCHs.

[0035] In this embodiment, for example, if the protocol specifies that the time slot resources of multiple scheduled PSSCHs are consecutive, then the first SCI indicates the number of minimum scheduling granularities of the scheduled PSSCHs; wherein, the higher layer configures the minimum scheduling granularity of the PSSCH time domain resources (e.g., X slots); or, the number of time slots of multiple consecutively scheduled PSSCHs is indicated by a list configured by the higher layer, specifically, the list may include multiple values, and the first SCI indicates one of these values, which is the number of time slots of the multiple scheduled PSSCHs.

[0036] Optionally, the time slots occupied by the multiple PSSCHs scheduled by the first SCI may be continuous or non-contiguous. The first SCI is used to indicate the following: the time slot offset of the multiple PSSCHs relative to the time slot where the first SCI (or the PSCCH) is located.

[0037] In this embodiment, for example, the protocol does not restrict the time slots of the multiple PSSCHs scheduled by the first SCI to be consecutive. The higher-layer signaling indicates a list to the terminal, each row of which contains multiple time slot offsets. The first SCI indicates a certain row in the list that contains the time slots of the multiple PSSCHs scheduled. In this way, the time slots of the multiple PSSCHs are obtained by using the index of the time slot of the first SCI and the aforementioned time slot offsets.

[0038] Optionally, if the multiple PSSCHs scheduled by the first SCI occupy the same frequency domain resources, before the terminal transmits the data of the multiple PSSCHs according to the first SCI, the method further includes: the terminal determining the starting sub-channel of the multiple PSSCHs based on the sub-channel where the Physical Resource Block (PRB) occupied by the PSCCH is located. For example, in this embodiment, the terminal uses the sub-channel where the PRB with the smallest index of the PSCCH is located as the starting sub-channel of the PSSCH.

[0039] Optionally, in the multiple time slots occupied by the multiple PSSCHs scheduled by the first SCI, each time slot is configured with the same symbol position for secondary link transmission; wherein, the symbol position is determined according to the starting symbol position and the number of symbols configured by the higher layer signaling. For example, each time slot includes 14 symbols, and in the multiple time slots occupied by the multiple PSSCHs, the 2nd to 13th symbols of each time slot are used for secondary link transmission.

[0040] Optionally, in parallel with the above embodiments, the starting symbol position and number of symbols in the higher-layer signaling configuration are applicable to the time slot occupied by the first PSSCH, and all symbols in the time slots after the time slot occupied by the first PSSCH can be used for secondary link transmission.

[0041] The first PSSCH mentioned here can be the first PSSCH among N consecutive time slots occupied by the multiple PSSCHs, where N is an integer greater than or equal to 2. For example, the first SCI schedules 8 PSSCHs, each PSSCH occupying 1 time slot. PSSCHs 1-3 are consecutive, PSSCHs 3 and 4 are not consecutive; PSSCHs 4-6 are consecutive, PSSCHs 6 and 7 are not consecutive; PSSCHs 7-8 are consecutive. In this embodiment, the first PSSCH can refer to PSSCH 1, PSSCH 4, or PSSCH 7, and the time slots following the time slot occupied by the first PSSCH can refer to PSSCH 2-3, PSSCH 5-6, and PSSCH 8.

[0042] In this embodiment, for example, if a Transport Block (TB) is mapped to multiple (e.g., 3) PSSCHs in multiple time slots of the first SCI scheduling, then the starting symbol position and number of symbols configured by the higher-layer signaling are applicable to the time slot of the first PSSCH mapped by that TB, and all symbols of the time slots of PSSCHs after the time slot of the first PSSCH can be used for secondary link transmission.

[0043] In the two embodiments described above, in N consecutive time slots occupied by the plurality of PSSCHs, the last symbol configured for secondary link transmission in the last time slot is not used to transmit PSSCH data, and / or, in N consecutive time slots occupied by the plurality of PSSCHs, for time slots with a Physical Sidelink Feedback Channel (PSFCH), the first and last symbols of the PSFCH are not used to transmit PSSCH data, where N is an integer greater than or equal to 2.

[0044] In this embodiment, for example, the first SCI schedules 8 PSSCHs, each PSSCH occupying 1 time slot. PSSCHs 1-3 are consecutive, PSSCHs 3 and 4 are discontinuous; PSSCHs 4-6 are consecutive, PSSCHs 6 and 7 are discontinuous; PSSCHs 7-8 are consecutive. Therefore, the last symbol configured for secondary link transmission in time slots 3, 6, and 8 is not used to transmit PSSCH data.

[0045] Optionally, for N consecutive time slots (N is an integer greater than or equal to 2) occupied by multiple PSSCHs scheduled by the first SCI, the terminal transmits data for the multiple PSSCHs according to the first SCI, including at least one of the following 1) to 3):

[0046] 1) For time slots that include PSCCH, PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission in the first time slot repeats the content transmitted by the second symbol. For time slots that do not include PSCCH, PSSCH data is transmitted starting from the first symbol configured for secondary link transmission.

[0047] For example, the first SCI schedules 8 PSSCHs, each PSSCH occupying 1 time slot. PSSCHs 1-3 are consecutive, PSSCHs 3 and 4 are discontinuous; PSSCHs 4-6 are consecutive, PSSCHs 6 and 7 are discontinuous; PSSCHs 7-8 are consecutive. The N consecutive time slots mentioned in this example could be PSSCHs 1-3 consecutive, PSSCHs 4-6, or PSSCHs 7-8. The time slots that include PSCCHs could be the time slot occupied by PSSCH 1; the time slots that do not include PSCCHs could be PSSCHs 2-8.

[0048] 2) PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission repeats the content transmitted by the second symbol.

[0049] 3) For the first PSSCH time slot in each minimum scheduling granularity, PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission in the first time slot repeats the content transmitted by the second symbol. Excluding the PSCCH time slot, PSSCH data is transmitted starting from the first symbol configured for secondary link transmission.

[0050] Optionally, the first SCI is also used to indicate the reserved PSSCH, wherein the time-domain resources of the reserved PSSCH are indicated with the monitoring period of the PSCCH as the granularity.

[0051] In this embodiment, for example, the first SCI indicates the PSSCH resources reserved for transmitting PSCCH in 32 monitoring cycles, including the current PSCCH monitoring position; wherein, the current PSCCH monitoring position can be the first or last PSCCH monitoring position within the scheduled PSSCH resources.

[0052] For example, the first SCI schedules four consecutive PSSCHs, PSSCH 1-4, each PSSCH occupying one time slot. The monitoring period for PSCCH is two time slots. There are PSCCH monitoring positions in the time slots where PSSCH 1 and PSSCH 3 are located. The first PSCCH monitoring position mentioned above can be the PSCCH monitoring position in the time slot where PSSCH 1 is located, and the last PSCCH monitoring position can be the PSCCH monitoring position in the time slot where PSSCH 3 is located.

[0053] In this embodiment, the reserved PSSCH can occupy one time slot or one minimum scheduling granularity; or the reserved PSSCH can occupy multiple (e.g., M) time slots or multiple minimum scheduling granularities, and the frequency domain resources occupied by the reserved PSSCH are the same.

[0054] In this embodiment, the number of multiple time slots or multiple minimum scheduling granularities reserved for PSSCH can be equal to the number of multiple PSSCHs scheduled by the first SCI.

[0055] Optionally, before the terminal transmits the data of the plurality of PSSCHs according to the first SCI, the method further includes: the terminal determining the demodulation reference signal (DMRS) pattern of the plurality of PSSCHs according to at least one of the following: the first SCI indication, the number of the plurality of PSSCHs, the position of the plurality of PSSCHs, including the number of symbols occupied by PSCCHs in the time slot of PSCCH, and the number of PSCCHs actually included in each time slot.

[0056] Optionally, before the terminal transmits data from the plurality of PSSCHs according to the first SCI, the method further includes: the terminal determining the number of modulation and coding symbols of the second SCI according to a first parameter (such as beta-offset) and a second parameter (such as sl-scaling); wherein, the higher-layer signaling is configured with a candidate set of the first parameter, the first SCI indicating the second SCI to which one or more values ​​in the candidate set of the first parameter are applicable; the higher-layer signaling is configured with a candidate set of the second parameter, different values ​​in the candidate set of the second parameter are applicable to different second SCIs, and the second SCI is carried by the plurality of PSSCHs.

[0057] In this embodiment, for example, the first SCI indicates the beta-offset used to determine the number of modulation and coding symbols in the second SCI. Specifically, a list can be configured by a higher layer, each list containing multiple beta-offsets, and the first SCI indicates one row, with each row including a number greater than or equal to the number of schedulable PSSCHs. The first SCI indicates the sl-scaling used to determine the number of modulation and coding symbols in the second SCI. Specifically, the sl-scaling can be configured by a higher layer as a list, where the number of values ​​in the list is greater than or equal to the number of PSSCHs actually scheduled, and each value corresponds to one second SCI.

[0058] The preceding embodiments mainly introduced the design of the first SCI; the second SCI will be introduced later.

[0059] Based on the preceding embodiments, the terminal transmitting the data of the plurality of PSSCHs according to the first SCI includes: the terminal transmitting a second SCI according to the first SCI; wherein the second SCI is carried by one of the following:

[0060] 1) Each of the multiple PSSCHs scheduled by the first SCI.

[0061] 2) Among the time slots occupied by multiple PSSCHs scheduled by the first SCI, there are PSSCHs corresponding to the time slots of PSCCHs. For example, if the first SCI schedules 4 consecutive PSSCHs, PSSCH 1-4, each PSSCH occupies 1 time slot, and the monitoring period of PSCCH is 2 time slots, and there are PSCCH monitoring positions in the time slots where PSSCH 1 and PSSCH 3 are located, then PSSCH 1 and PSSCH 3 carry the second SCI.

[0062] 3) The first PSSCH of each smallest scheduling granularity among the multiple PSSCHs scheduled by the first SCI.

[0063] Optionally, all fields of the second SCI are applicable to the plurality of PSSCHs; or the first field of the second SCI is applicable to the third parameter of the first PSSCH among the plurality of PSSCHs, wherein the third parameter of the PSSCHs after the first PSSCH is derived based on the first field and a preset rule; or the plurality of second fields included in the second SCI are respectively applicable to the plurality of PSSCHs.

[0064] In one example, based on 2) or 3) above, the format of the second SCI includes the second SCI format 2-A or the second SCI format 2-B; wherein, all fields of the second SCI are applicable to the plurality of PSSCHs; or the first field of the second SCI is applicable to the third parameter of the first PSSCH among the plurality of PSSCHs, and the third parameter of the PSSCHs after the first PSSCH is derived according to the first field and a preset rule.

[0065] For example, when the third parameter is the HARQ process ID, the first field of the second SCI indicates the HARQ process ID of the first PSSCH among the plurality of PSSCHs, and the HARQ process ID of subsequent PSSCHs is obtained by adding 1 to the HARQ process ID of the previous PSSCH.

[0066] In this example, the second SCI can reuse SCI format 2-A or SCI format 2-B from related technologies.

[0067] In another example, based on 2) or 3) above, the format of the second SCI includes a second SCI format 2-C; wherein the multiple second fields included in the second SCI are respectively applicable to the multiple PSSCHs.

[0068] In this example, the second SCI can be newly defined, indicating the corresponding field for the different PSSCH in SCI format 2-C.

[0069] Optionally, the method further includes: the terminal determining the number of modulation and coding symbols of the second SCI according to one of the following:

[0070] 1) In a time slot containing PSCCH, the resources occupied by PSCCH and the resources occupied by DMRS.

[0071] 2) The resources occupied by PSCCH and DMRS in the time slot where the second SCI is located.

[0072] 3) The resources occupied by PSCCH and DMRS in the time slots where the multiple PSSCHs are located.

[0073] Optionally, before the terminal transmits the data of the plurality of PSSCHs according to the first SCI, the method further includes one of the following 1) to 4):

[0074] 1) If a TB corresponds to one of the multiple PSSCHs, and different PSSCHs transmit the same TB, then the transport block size is determined based on the time slots including the PSCCH. For example, the resource element (RE) occupied by the PSCCH is subtracted from the time slots including the PSCCH to determine the RE occupied by the PSCCH, and the transport block size is determined based on the RE occupied by the PSCCH. In this example, the overhead of DMRS is related to the number of scheduled PSSCHs.

[0075] 2) If a TB corresponds to one of the multiple PSSCHs, and different PSSCHs transmit different TBs, then the transport block size is determined based on the actual REs occupied by the PSCCH in the time slot where the PSSCH is located. That is, the transport block size is determined based on the number of REs actually occupied by the PSCCH in each time slot (which can be 0 or other values; 0 indicates that the PSCCH does not exist).

[0076] 3) If a TB corresponds to the multiple PSSCHs, then the transport block size is determined by combining the multiple PSSCHs.

[0077] 4) If a TB corresponds to the PSSCH with the smallest scheduling granularity among the multiple PSSCHs, then the transport block size is determined by combining the PSSCH with the smallest scheduling granularity. In this example, the overhead of DMRS is related to the number of scheduled PSSCHs.

[0078] To illustrate the PSSCH transmission method provided in the embodiments of this application in detail, the following will describe it in conjunction with several specific embodiments.

[0079] Example 1

[0080] This embodiment supports 1 st -stage SCI (corresponding to the first SCI in the previous example) schedules 1 TB across multiple consecutive PSSCHs.

[0081] In this embodiment, the monitoring period for PSCCH is configured by the higher layer to be 10 slots. The minimum scheduling granularity for PSSCH time-domain resources is configured by the higher layer to be 2 slots. st -stage SCI indicates scheduling at a granularity of 2 slots, i.e., 4 slots of PSSCH. One TB corresponds to a minimum scheduling granularity of 2 slots of PSSCH, meaning that 2 different TBs are transmitted.

[0082] The higher layer configures the number of sub-channels of a PSSCH to be 2. Based on the sub-channel where the smallest PRB index of the frequency domain resource of the current PSCCH is located, it is inferred that the frequency domain resources of the 4 slots to be scheduled are sub-channels {4, 5}.

[0083] With the higher-level configuration startSLsymbols=0 and lengthSLsymbols=14, the first PSSCH in every two slots will start transmission from symbol 1, and symbol 0 in the first slot will repeat the content of symbol 1. Subsequent PSSCH transmissions, excluding PSCCH, will start from symbol 1. Furthermore, the last symbol of the last slot in a four-slot configuration cannot be used for PSSCH transmission.

[0084] The maximum number of resources reserved for non-periodic configurations in high-level configurations is 2, then 1 st -stage SCI indicates that the reserved resources are based on the PSCCH monitoring cycle. Within the 32 monitoring cycles including the current PSCCH monitoring cycle, PSCCH resources are reserved starting from the 5th PSCCH monitoring cycle, with 4 slots reserved. And according to 1... st The -stage instruction reserves the frequency domain resources of the 4 slots as sub-channels {8, 9}.

[0085] PSCCH carries 1 st The -stage SCI indicates the DMRS pattern and can also determine the PSSCH-DMRS pattern based on the actual PSCCH content in each slot. Specifically, the first slot's PSCCH symbol count is 2 (configured by the higher layer), and subsequent slots' PSCCH symbol counts are 0. The terminal then uses 1... st -stage SCI indicates the DMRS pattern, and the DMRS pattern of the slot is determined by combining different numbers of PSCCH.

[0086] 2 nd -stage SCI (corresponding to the second SCI in the previous embodiment) is carried out in the first PSSCH at each minimum scheduling granularity, 2 nd The number of modulation and coding symbols in a stage SCI is determined based on the PSCCH and DMRS resources within the overall PSSCH resources scheduled at each minimum scheduling granularity. st -stage SCI indicates beta-offset and sl-scaling, which are used sequentially for two 2 nd The number of modulation and coding symbols for stage SCI is determined.

[0087] In this embodiment, the transport block size (TB size) is jointly determined by the PSSCH of the current minimum scheduling granularity.

[0088] Example 2

[0089] This embodiment supports 1 st -Stage SCI scheduling of multiple PSSCHs results in repeated TB transfers.

[0090] In this embodiment, the monitoring period for the PSCCH is configured by the higher layer to be 10 slots. The higher layer configures the PSSCH time-domain resource as a list containing different slot offsets. The 1st-stage SCI indicates one row in this list, which is {1, 3, 4}. Therefore, the slot where the scheduled PSSCH is located is {X, X+1, X+3, X+4}, where X is the slot where the PSCCH is located. Each TB corresponds to one PSSCH.

[0091] The higher layer configures the number of sub-channels of a PSSCH to be 2. Based on the sub-channel where the smallest PRB index of the frequency domain resource of the current PSCCH is located, it is inferred that the frequency domain resources of the 4 slots to be scheduled are sub-channels {4, 5}.

[0092] With the higher-level configuration startSLsymbols=0 and lengthSLsymbols=14, each PSSCH slot in the four slots will start transmission from symbol 1, and symbol 0 will repeat the content of symbol 1. The last symbol of the last slot cannot be used for PSSCH transmission. If Slot X+3 contains PSFCH, then the two symbols before and after PSFCH cannot be used for PSSCH transmission.

[0093] The maximum number of resources reserved for non-periodic configurations in high-level configurations is 2, then 1 st -stage SCI indicates that the reserved resources are based on the PSCCH monitoring cycle. Within the 32 monitoring cycles including the current PSCCH monitoring cycle, PSCCH resources starting from the 5th PSCCH monitoring cycle are reserved, with each reserved resource consisting of one slot. According to 1 st The -stage indicator reserves the frequency domain resources of one slot for subchannel {2, 3}.

[0094] PSCCH carries 1 st -stage SCI indicates the DMRS pattern and can also be combined with slots containing PSCCH to determine the PSSCH-DMRS pattern for each slot.

[0095] 2 nd -stage SCI is carried in the first PSSCH, 2 nd The number of modulation-coded symbols in a -stage SCI is determined based on the first slot containing the PSSCH.

[0096] The resource mapping of PSSCH is determined according to the resource occupancy method of the slot containing PSSCH.

[0097] In this embodiment, the transport block size (TB size) is calculated based on the slot containing the PSCCH.

[0098] Example 3

[0099] This embodiment supports 1 st -stage SCI schedules different TBs in continuous PSSCH transmission.

[0100] In this embodiment, the monitoring period for PSSCH is configured by the higher layer to be 10 slots. The higher layer configures a list including the number of slots for different consecutively scheduled PSSCHs, with the 1st-stage SCI indicating a value of 4. Each TB corresponds to one PSSCH.

[0101] The higher layer configures the number of sub-channels of a PSSCH to be 2. Based on the sub-channel where the smallest PRB index of the frequency domain resource of the current PSCCH is located, it is inferred that the frequency domain resources of the 4 slots to be scheduled are sub-channels {4, 5}.

[0102] If the higher-level configuration is startSLsymbols=0 and lengthSLsymbols=14, then each PSSCH slot in the 4 slots will start transmitting from symbol 1, and symbol 0 will repeat the content of symbol 1. The last symbol of the last slot cannot be used for PSSCH transmission.

[0103] The maximum number of resources reserved for non-periodic configurations in high-level configurations is 2, then 1 st -stage SCI indicates that the reserved resources are based on the PSCCH monitoring cycle. Within the 32 monitoring cycles including the current PSCCH monitoring cycle, PSCCH resources are reserved for the start of the 5th PSCCH monitoring cycle, with 4 slots reserved. According to 1 st The -stage instruction reserves the frequency domain resources of the 4 slots as sub-channels {8, 9}.

[0104] PSCCH carries 1 st The -stage SCI indicates the DMRS pattern and can also determine the PSSCH DMRS pattern based on whether each slot actually contains a PSCCH. Specifically, the first slot's PSCCH symbol count is 2 as configured by the higher layer, and subsequent slots' PSCCH symbol counts are 0. The terminal then uses 1... st-stage SCI indicates the DMRS pattern, and the DMRS pattern of the slot is determined by combining different numbers of PSCCH.

[0105] 2 nd -stage SCI is carried in each PSSCH, 2 nd The number of modulation and coding symbols in a stage SCI is determined based on the resources occupied by the PSCCH and DMRS in the actual slot. st -stage SCI indicates beta-offset and sl-scaling, which are used sequentially for two 2 nd The number of modulation and coding symbols for stage SCI is determined.

[0106] In this embodiment, the transport block size is calculated based on the actual RE resources occupied by the PSCCH.

[0107] Example 4

[0108] This embodiment supports 1 st -stage SCI schedules different TBs in continuous PSSCH transmission.

[0109] In this embodiment, the monitoring period for PSSCH is configured by the higher layer to be 10 slots. The higher layer configures a list including the number of slots for different consecutively scheduled PSSCHs, with the 1st-stage SCI indicating a value of 4. Each TB corresponds to one PSSCH.

[0110] The higher layer configures the number of sub-channels of a PSSCH to be 2. Based on the sub-channel where the smallest PRB index of the frequency domain resource of the current PSCCH is located, it is inferred that the frequency domain resources of the 4 slots to be scheduled are sub-channels {4, 5}.

[0111] If the higher-level configuration is startSLsymbols=0 and lengthSLsymbols=14, then each PSSCH slot in the 4 slots will start transmitting from symbol 1, and symbol 0 will repeat the content of symbol 1. The last symbol of the last slot cannot be used for PSSCH transmission.

[0112] If the maximum number of non-periodic resources reserved by the high-level configuration is 2, then the 1st-stage SCI indicates that the reserved resources are based on the PSCCH monitoring cycle. Within the 32 monitoring cycles including the current PSCCH monitoring cycle, PSSCH resources starting from the 5th PSCCH monitoring cycle are reserved, with a total of 4 slots reserved. According to 1... stThe -stage instruction reserves the frequency domain resources of the 4 slots as sub-channels {8, 9}.

[0113] PSCCH carries 1 st The -stage SCI indicates the DMRS pattern and can also determine the PSSCH DMRS pattern based on whether each slot actually contains a PSCCH. Specifically, the first slot's PSCCH symbol count is 2 as configured by the higher layer, and subsequent slots' PSCCH symbol counts are 0. The terminal then uses 1... st -stage SCI indicates the DMRS pattern, and the DMRS pattern of the slot is determined by combining different numbers of PSCCH.

[0114] 2 nd -stage SCI format 2-C is carried in the first PSSCH and contains the NDI RV values ​​for different PSSCHs, which the HARQ process obtains by accumulating the scheduling index.

[0115] 2 nd The number of modulation and coding symbols in a stage SCI is determined based on the resources occupied by the PSCCH and DMRS in the actual slot.

[0116] In this embodiment, the transport block size is calculated based on the actual RE resources occupied by the PSCCH.

[0117] It should be noted that the PSSCH transmission method provided in this application embodiment can be executed by a PSSCH transmission device or a control module within the PSSCH transmission device for executing the PSSCH transmission method. This application embodiment uses the execution of the PSSCH transmission method by a PSSCH transmission device as an example to illustrate the PSSCH transmission device provided in this application embodiment.

[0118] Figure 3 This is a schematic diagram of the structure of a PSSCH transmission device according to an embodiment of this application. This device may correspond to a terminal in other embodiments. Figure 3 As shown, the device 300 includes the following modules.

[0119] The communication module 302 can be used to transmit the first SCI, which is carried by the PSCCH and is used to schedule multiple PSSCHs.

[0120] The communication module 302 can also be used to transmit data of the plurality of PSSCHs according to the first SCI.

[0121] Optionally, the device 300 may also include a processing module, such as a processor.

[0122] In this embodiment, the device 300 can simultaneously schedule the transmission of multiple PSSCHs through the first SCI, which is beneficial to make full use of the time-frequency domain resources of the secondary link and save energy consumption of the device 300.

[0123] Optionally, as an embodiment, the time slots occupied by the plurality of PSSCHs are consecutive, and the first SCI is used to indicate one of the following: 1) the number of minimum scheduling granularities corresponding to the plurality of PSSCHs, wherein the higher-layer signaling configures the device with the minimum scheduling granularity, and the minimum scheduling granularity is the minimum number of time slots occupied by the plurality of PSSCHs; 2) the number of time slots occupied by the plurality of PSSCHs.

[0124] Optionally, as an embodiment, the first SCI is used to indicate the time slot offset of the multiple PSSCHs relative to the time slot occupied by the first SCI.

[0125] Optionally, as an embodiment, the plurality of PSSCHs occupy the same frequency domain resources, and the apparatus further includes a determining module for determining the starting sub-channel of the plurality of PSSCHs based on the sub-channel in which the PRB with the smallest index occupies the PSCCH.

[0126] Optionally, as an embodiment, in the multiple time slots occupied by the multiple PSSCHs, each time slot is configured with the same symbol position for secondary link transmission; wherein, the symbol position is determined according to the starting symbol position and the number of symbols configured by the higher-layer signaling.

[0127] Optionally, as an embodiment, the starting symbol position and number of symbols configured in the higher-layer signaling are suitable for the time slot occupied by the first PSSCH, and all symbols in the time slots after the time slot occupied by the first PSSCH can be used for secondary link transmission.

[0128] Optionally, as an embodiment, in N consecutive time slots occupied by the plurality of PSSCHs, the last symbol configured for secondary link transmission in the last time slot is not used to transmit PSSCH data, and / or, in N consecutive time slots occupied by the plurality of PSSCHs, for time slots with a physical secondary link feedback channel PSFCH, the first and last symbols of the PSFCH are not used to transmit PSSCH data, where N is an integer greater than or equal to 2.

[0129] Optionally, as an embodiment, for N consecutive time slots occupied by the plurality of PSSCHs, where N is an integer greater than or equal to 2, the communication module 302 is used for at least one of the following 1) to 3).

[0130] 1) For time slots that include PSCCH, PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission in the first time slot repeats the content transmitted by the second symbol. For time slots that do not include PSCCH, PSSCH data is transmitted starting from the first symbol configured for secondary link transmission.

[0131] 2) PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission repeats the content transmitted by the second symbol.

[0132] 3) For the first PSSCH time slot in each minimum scheduling granularity, PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission in the first time slot repeats the content transmitted by the second symbol. Excluding the PSCCH time slot, PSSCH data is transmitted starting from the first symbol configured for secondary link transmission.

[0133] Optionally, as an embodiment, the first SCI is further used to indicate the reservation of PSSCH, wherein the time-domain resources of the reserved PSSCH are indicated with the monitoring period of the PSCCH as the granularity.

[0134] Optionally, as an embodiment, the reserved PSSCH occupies one time slot or one minimum scheduling granularity; or the reserved PSSCH occupies multiple time slots or multiple minimum scheduling granularities, and the frequency domain resources occupied by the reserved PSSCH are the same.

[0135] Optionally, as an embodiment, the apparatus further includes a determining module for determining the demodulation reference signal DMRS pattern of the plurality of PSSCHs based on at least one of the following: the first SCI indication, the number of the plurality of PSSCHs, the position of the plurality of PSSCHs, the number of symbols occupied by PSCCHs in a time slot including PSCCHs, and the number of PSCCHs actually included in each time slot.

[0136] Optionally, as an embodiment, the apparatus further includes a determining module for determining the number of modulation and coding symbols of the second SCI based on a first parameter and a second parameter; wherein, the higher-layer signaling is configured with a candidate set of the first parameter, and the first SCI indicates the second SCI to which one or more values ​​in the candidate set of the first parameter are applicable; the higher-layer signaling is configured with a candidate set of the second parameter, and different values ​​in the candidate set of the second parameter are applicable to different second SCIs; the second SCI is carried by the plurality of PSSCHs.

[0137] Optionally, as an embodiment, the communication module 302 is used to transmit a second SCI according to the first SCI; wherein the second SCI is carried by one of the following: each of the plurality of PSSCHs; the PSSCH corresponding to the time slot of the time slot occupied by the plurality of PSSCHs including the time slot of PSCCH; the first PSSCH of each minimum scheduling granularity among the plurality of PSSCHs.

[0138] Optionally, as an embodiment, all fields of the second SCI are applicable to the plurality of PSSCHs; or the first field of the second SCI is applicable to the third parameter of the first PSSCH among the plurality of PSSCHs, wherein the third parameter of the PSSCHs after the first PSSCH is derived based on the first field and a preset rule; or the plurality of second fields included in the second SCI are respectively applicable to the plurality of PSSCHs.

[0139] Optionally, as an embodiment, the apparatus further includes a determining module for determining the number of modulation and coding symbols of the second SCI based on one of the following: 1) the resources occupied by PSCCH and DMRS in a time slot including PSCCH; 2) the resources occupied by PSCCH and DMRS in the time slot where the second SCI is located; 3) the resources occupied by PSCCH and DMRS in the time slots where the plurality of PSSCHs are located.

[0140] Optionally, as an embodiment, the apparatus further includes a determining module for one of the following 1) to 4):

[0141] 1) If a TB corresponds to one of the multiple PSSCHs, and different PSSCHs transmit the same TB, then the transport block size is determined based on the time slot including the PSCCH.

[0142] 2) If a transport block TB corresponds to one of the multiple PSSCHs, and different PSSCHs transmit different TBs, then the transport block size is determined according to the resource particles RE actually occupied by the PSCCH in the time slot where the PSSCH is located.

[0143] 3) If a TB corresponds to the multiple PSSCHs, then the transport block size is determined by combining the multiple PSSCHs.

[0144] 4) If a TB corresponds to the PSSCH with the smallest scheduling granularity among the multiple PSSCHs, then the transport block size is determined by combining the PSSCH with the smallest scheduling granularity.

[0145] Optionally, as an embodiment, the apparatus further includes a determining module for determining the transmission period of the PSCCH based on higher-layer signaling instructions.

[0146] The apparatus 300 according to the embodiments of this application can refer to the flow of the method 200 corresponding to the embodiments of this application. Furthermore, each unit / module in the apparatus 300 and the other operations and / or functions described above are for implementing the corresponding flow in the method 200 and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be described in detail here.

[0147] The PSSCH transmission device in this application embodiment can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip in a terminal. This device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the type of terminal.

[0148] The PSSCH transmission device provided in this application embodiment can achieve Figure 2 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0149] Optional, such as Figure 4 As shown, this application embodiment also provides a communication device 400, including a processor 401, a memory 402, and a program or instructions stored in the memory 402 and executable on the processor 401. For example, when the communication device 400 is a terminal, the program or instructions executed by the processor 401 implement the various processes of the above-described PSSCH transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0150] This application embodiment also provides a terminal, including a processor and a communication interface. The communication interface is used to transmit a first SCI, which is carried by a PSCCH. The first SCI is used to schedule multiple PSSCHs; data of the multiple PSSCHs is transmitted according to the first SCI. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 5 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0151] The terminal 500 includes, but is not limited to, at least some of the following components: radio frequency unit 501, network module 502, audio output unit 503, input unit 504, sensor 505, display unit 506, user input unit 507, interface unit 508, memory 509, and processor 510.

[0152] Those skilled in the art will understand that the terminal 500 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 510 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 5 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0153] It should be understood that, in this embodiment, the input unit 504 may include a graphics processing unit (GPU) 5041 and a microphone 5042. The GPU 5041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 506 may include a display panel 5061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 507 includes a touch panel 5071 and other input devices 5072. The touch panel 5071 is also called a touch screen. The touch panel 5071 may include a touch detection device and a touch controller. Other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0154] In this embodiment, the radio frequency unit 501 receives downlink data from the network-side device and processes it for the processor 510; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0155] The memory 509 can be used to store software programs or instructions and various data. The memory 509 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 509 may include high-speed random access memory and non-transient memory, wherein the non-transient memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-transient solid-state storage device.

[0156] Processor 510 may include one or more processing units; optionally, processor 510 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 510.

[0157] The radio frequency unit 501 can be used to transmit a first SCI, which is carried by a PSCCH. The first SCI is used to schedule multiple PSSCHs and transmit data of the multiple PSSCHs according to the first SCI.

[0158] In this embodiment, the terminal can simultaneously schedule the transmission of multiple PSSCHs through the first SCI, which is beneficial for making full use of the time-frequency domain resources of the secondary link and saving terminal power consumption.

[0159] The terminal 500 provided in this application embodiment can also implement various processes of the above-described PSSCH transmission method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0160] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described PSSCH transmission method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0161] The processor may be the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0162] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described PSSCH transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0163] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0164] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0165] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network-side device, etc.) to execute the methods described in the various embodiments of this application.

[0166] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for transmitting a Physical Sublink Shared Channel (PSSCH), characterized in that, include: The terminal transmits the first secondary link control information (SCI), which is carried by the physical secondary link control channel (PSCCH). The first SCI is used to schedule multiple PSSCHs. The terminal transmits the data of the plurality of PSSCHs according to the first SCI; Wherein, the time slots occupied by the plurality of PSSCHs are consecutive, and the first SCI is used to indicate one of the following: The number of minimum scheduling granularities corresponding to the multiple PSSCHs; the higher-layer signaling configures the terminal with the minimum scheduling granularity, the minimum scheduling granularity being the minimum number of hour slots occupied by the multiple PSSCHs; The number of time slots occupied by the multiple PSSCHs.

2. The method according to claim 1, characterized in that, The multiple PSSCHs occupy the same frequency domain resources. Before the terminal transmits the data of the multiple PSSCHs according to the first SCI, the method further includes: The terminal determines the starting sub-channel of the plurality of PSSCHs based on the sub-channel where the physical resource block (PRB) with the smallest index occupied by the PSCCH is located.

3. The method according to claim 1, characterized in that, In the multiple time slots occupied by the multiple PSSCHs, each time slot is configured with the same symbol position for secondary link transmission; The symbol position is determined based on the starting symbol position and the number of symbols configured by the higher-layer signaling.

4. The method according to claim 1, characterized in that, The starting symbol position and number of symbols configured in the higher-layer signaling are applicable to the time slot occupied by the first PSSCH, and all symbols in the time slots following the time slot occupied by the first PSSCH can be used for secondary link transmission.

5. The method according to claim 3 or 4, characterized in that, In N consecutive time slots occupied by the plurality of PSSCHs, the last symbol in the last time slot configured for secondary link transmission is not used to transmit PSSCH data; and / or In N consecutive time slots among the multiple PSSCH time slots, for the time slots with a Physical Sublink Feedback Channel (PSFCH), the first and last symbols of the PSFCH are not used to transmit PSSCH data, where N is an integer greater than or equal to 2.

6. The method according to claim 1, characterized in that, For N consecutive time slots occupied by the plurality of PSSCHs, the terminal transmits data for the plurality of PSSCHs according to the first SCI, including at least one of the following: For time slots that include PSCCH, PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission in the first time slot repeats the content transmitted by the second symbol. For time slots that do not include PSCCH, PSSCH data is transmitted starting from the first symbol configured for secondary link transmission. PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission repeats the content transmitted by the second symbol; as well as For the first PSSCH time slot in each minimum scheduling granularity, PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission in the first time slot repeats the content transmitted by the second symbol. Excluding the PSCCH time slot, PSSCH data is transmitted starting from the first symbol configured for secondary link transmission. N is an integer greater than or equal to 2.

7. The method according to claim 1, characterized in that, The first SCI is also used to indicate the reserved PSSCH, wherein the time-domain resources of the reserved PSSCH are indicated with the monitoring period of the PSCCH as the granularity.

8. The method according to claim 7, characterized in that, The reserved PSSCH occupies one time slot or one minimum scheduling granularity; or The reserved PSSCH occupies multiple time slots or multiple minimum scheduling granularities, and the frequency domain resources occupied by the reserved PSSCH are the same.

9. The method according to claim 1, characterized in that, Before the terminal transmits the data of the plurality of PSSCHs according to the first SCI, the method further includes: The terminal determines the demodulation reference signal (DMRS) pattern of the plurality of PSSCHs based on at least one of the following: the first SCI indication, the number of the plurality of PSSCHs, the position of the plurality of PSSCHs, the number of symbols occupied by PSCCHs in the time slots including PSCCHs, and the number of PSCCHs actually included in each time slot.

10. The method according to claim 1, characterized in that, Before the terminal transmits the data of the plurality of PSSCHs according to the first SCI, the method further includes: The terminal determines the number of modulation and coding symbols of the second SCI based on the first parameter and the second parameter. The higher-layer signaling is configured with a candidate set of the first parameter, and the first SCI indicates the second SCI to which one or more values ​​in the candidate set of the first parameter are applicable. The higher-layer signaling is configured with a candidate set of the second parameter, and different values ​​in the candidate set of the second parameter are applicable to different second SCIs; The second SCI is carried by the plurality of PSSCHs.

11. The method according to claim 1, characterized in that, The terminal transmitting the data of the plurality of PSSCHs according to the first SCI includes: the terminal transmitting a second SCI according to the first SCI; wherein the second SCI is carried by one of the following: Each of the plurality of PSSCHs; The time slots occupied by the multiple PSSCHs include the PSSCHs corresponding to the time slots of PSCCHs; The first PSSCH of each of the multiple PSSCHs with the smallest scheduling granularity.

12. The method according to claim 11, characterized in that, All fields of the second SCI apply to the multiple PSSCHs; or The first field of the second SCI applies to the third parameter of the first PSSCH among the plurality of PSSCHs, and the third parameter of the PSSCHs after the first PSSCH is derived based on the first field and a preset rule; or The second SCI includes multiple second fields that are respectively applicable to the multiple PSSCHs.

13. The method according to claim 11, characterized in that, The method further includes: the terminal determining the number of modulation and coding symbols of the second SCI according to one of the following: This includes the resources occupied by the PSCCH and the resources occupied by the DMRS in the time slot containing the PSCCH. The resources occupied by PSCCH and DMRS in the time slot where the second SCI is located; The resources occupied by PSCCH and DMRS in the time slots where the multiple PSSCHs are located.

14. The method according to claim 11, characterized in that, Before the terminal transmits the data of the plurality of PSSCHs according to the first SCI, the method further includes one of the following: If a transport block TB corresponds to one of the multiple PSSCHs, and different PSSCHs transmit the same TB, then the transport block size is determined based on the time slot including the PSCCH. If a transport block TB corresponds to one of the multiple PSSCHs, and different PSSCHs transmit different TBs, then the transport block size is determined based on the resource particles RE actually occupied by the PSCCH in the time slot where the PSSCH is located. If one TB corresponds to the multiple PSSCHs, then the transport block size is determined by combining the multiple PSSCHs; If a TB corresponds to the PSSCH with the smallest scheduling granularity among the multiple PSSCHs, then the transport block size is determined by combining the PSSCH with the smallest scheduling granularity.

15. The method according to claim 1, characterized in that, Before the terminal transmits the first SCI, the method further includes: The terminal determines the transmission period of the PSCCH according to the instructions of the higher-layer signaling.

16. A PSSCH transmission device, characterized in that, include: The communication module is used to transmit the first SCI, which is carried by the PSCCH and is used to schedule multiple PSSCHs. The communication module is also used to transmit data of the plurality of PSSCHs according to the first SCI; Wherein, the time slots occupied by the plurality of PSSCHs are consecutive, and the first SCI is used to indicate one of the following: The number of minimum scheduling granularities corresponding to the multiple PSSCHs; the higher-layer signaling configures the device with the minimum scheduling granularity, the minimum scheduling granularity being the minimum number of hour slots occupied by the multiple PSSCHs; The number of time slots occupied by the multiple PSSCHs.

17. The apparatus according to claim 16, characterized in that, The multiple PSSCHs occupy the same frequency domain resources. The device further includes a determination module, which is used to determine the starting sub-channel of the multiple PSSCHs based on the sub-channel where the PRB with the smallest index occupies the PSCCH.

18. The apparatus according to claim 16, characterized in that, In the multiple time slots occupied by the multiple PSSCHs, each time slot is configured with the same symbol position for secondary link transmission; The symbol position is determined based on the starting symbol position and the number of symbols configured by the higher-layer signaling.

19. The apparatus according to claim 16, characterized in that, The starting symbol position and number of symbols configured in the higher-layer signaling are applicable to the time slot occupied by the first PSSCH, and all symbols in the time slots following the time slot occupied by the first PSSCH can be used for secondary link transmission.

20. The apparatus according to claim 18 or 19, characterized in that, In N consecutive time slots occupied by the plurality of PSSCHs, the last symbol in the last time slot configured for secondary link transmission is not used to transmit PSSCH data; and / or In N consecutive time slots among the multiple PSSCH time slots, for the time slot containing PSFCH, the two symbols before and after PSFCH are not used to transmit PSSCH data, where N is an integer greater than or equal to 2.

21. The apparatus according to claim 16, characterized in that, For N consecutive time slots occupied by the plurality of PSSCHs, the communication module is used for at least one of the following: For time slots that include PSCCH, PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission in the first time slot repeats the content transmitted by the second symbol. For time slots that do not include PSCCH, PSSCH data is transmitted starting from the first symbol configured for secondary link transmission. PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission repeats the content transmitted by the second symbol; as well as For the first PSSCH time slot in each minimum scheduling granularity, PSSCH data is transmitted starting from the second symbol configured for secondary link transmission, and the first symbol configured for secondary link transmission in the first time slot repeats the content transmitted by the second symbol. Excluding the PSCCH time slot, PSSCH data is transmitted starting from the first symbol configured for secondary link transmission. N is an integer greater than or equal to 2.

22. The apparatus according to claim 16, characterized in that, The first SCI is also used to indicate the reserved PSSCH, wherein the time-domain resources of the reserved PSSCH are indicated with the monitoring period of the PSCCH as the granularity.

23. The apparatus according to claim 22, characterized in that, The reserved PSSCH occupies one time slot or one minimum scheduling granularity; or The reserved PSSCH occupies multiple time slots or multiple minimum scheduling granularities, and the frequency domain resources occupied by the reserved PSSCH are the same.

24. The apparatus according to claim 16, characterized in that, The apparatus further includes a determining module for determining the DMRS pattern of the plurality of PSSCHs based on at least one of the following: the first SCI indication, the number of the plurality of PSSCHs, the position of the plurality of PSSCHs, the number of symbols occupied by PSCCHs in a time slot including PSCCHs, and the number of PSCCHs actually included in each time slot.

25. The apparatus according to claim 16, characterized in that, The device further includes a determining module for determining the number of modulation and coding symbols of the second SCI based on the first parameter and the second parameter. The higher-layer signaling is configured with a candidate set of the first parameter, and the first SCI indicates the second SCI to which one or more values ​​in the candidate set of the first parameter are applicable. The higher-layer signaling is configured with a candidate set of the second parameter, and different values ​​in the candidate set of the second parameter are applicable to different second SCIs; The second SCI is carried by the plurality of PSSCHs.

26. The apparatus according to claim 16, characterized in that, The communication module is configured to transmit a second SCI based on the first SCI; wherein the second SCI is carried by one of the following: Each of the plurality of PSSCHs; The time slots occupied by the multiple PSSCHs include the PSSCHs corresponding to the time slots of PSCCHs; The first PSSCH of each of the multiple PSSCHs with the smallest scheduling granularity.

27. The apparatus according to claim 26, characterized in that, All fields of the second SCI apply to the multiple PSSCHs; or The first field of the second SCI applies to the third parameter of the first PSSCH among the plurality of PSSCHs, and the third parameter of the PSSCHs after the first PSSCH is derived based on the first field and a preset rule; or The second SCI includes multiple second fields that are respectively applicable to the multiple PSSCHs.

28. The apparatus according to claim 26, characterized in that, The apparatus further includes a determining module for determining the number of modulation and coding symbols of the second SCI according to one of the following: This includes the resources occupied by the PSCCH and the resources occupied by the DMRS in the time slot containing the PSCCH. The resources occupied by PSCCH and DMRS in the time slot where the second SCI is located; The resources occupied by PSCCH and DMRS in the time slots where the multiple PSSCHs are located.

29. The apparatus according to claim 26, characterized in that, The device further includes a determining module for one of the following: If a TB corresponds to one of the multiple PSSCHs, and different PSSCHs transmit the same TB, then the transport block size is determined based on the time slot including the PSCCH. If a TB corresponds to one of the multiple PSSCHs, and different PSSCHs transmit different TBs, then the transport block size is determined based on the RE actually occupied by the PSCCH in the time slot where the PSSCH is located. If one TB corresponds to the multiple PSSCHs, then the transport block size is determined by combining the multiple PSSCHs; If a TB corresponds to the PSSCH with the smallest scheduling granularity among the multiple PSSCHs, then the transport block size is determined by combining the PSSCH with the smallest scheduling granularity.

30. The apparatus according to claim 16, characterized in that, The apparatus further includes a determination module for determining the transmission period of the PSCCH based on higher-layer signaling instructions.

31. A terminal, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the PSSCH transmission method as described in any one of claims 1 to 15.

32. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the PSSCH transmission method as described in any one of claims 1 to 15.

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