CN115315930A

CN115315930A - Method, device and storage medium for determining guard interval

Info

Publication number: CN115315930A
Application number: CN202080098948.9A
Authority: CN
Inventors: 贺传峰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2022-11-08
Anticipated expiration: 2040-05-15
Also published as: WO2021227071A1; CN115315930B

Abstract

The embodiment of the application provides a method, a device and a storage medium for determining a guard interval, which are used for improving the transmission performance of an uplink channel of a system. The method comprises the following steps: the method comprises the steps of comprehensively analyzing uplink channel sending conditions of a plurality of symbols at a junction of two continuous time units, and determining N symbols from the junction as a guard interval by combining a priority sequence of a preset channel sending type, wherein N is a positive integer. The N symbols of the determined guard interval are consecutive symbols, and the symbols at both sides of the guard interval belong to symbols of different time units. And the terminal performs frequency sub-band readjustment in the determined guard interval. The influence of the guard interval determined by the method on the sending performance of the uplink channel of the terminal is minimum, and the transmission performance of the uplink channel of the system is improved.

Description

Method, device and storage medium for determining guard interval

Technical Field

The embodiment of the present application relates to the field of communications technologies, and in particular, to a method, a device, and a storage medium for determining a guard interval.

Background

A New Radio (NR) system mainly supports Enhanced Mobile bandwidth (eMBB) service, and meets the requirements of high speed, high spectrum efficiency, and large bandwidth. In practical application, besides the eMBB service, there are also a plurality of other service types, such as data transmission services of industrial internet of things sensors, monitoring cameras, and wearable devices, and a terminal supporting these services has the characteristics of large connection number, low power consumption, and low cost. Therefore, there is a need to optimize the NR system for low-power terminals supporting the other traffic types mentioned above, and the corresponding system is called NR-light system.

In order to improve the performance of channel transmission, the NR system considers that the channel transmission is performed in a frequency hopping manner, that is, the bandwidths of channel resources in different time units may be different. Accordingly, the terminal needs to retune (retuning) the receiver bandwidth from one bandwidth to another, during which the terminal cannot receive or transmit the channel, which will affect the transmission performance of the system channel.

Disclosure of Invention

The embodiment of the application provides a method, equipment and a storage medium for determining a guard interval, which ensure the transmission performance of an uplink channel of a communication system.

In a first aspect, an embodiment of the present application provides a method for determining a guard interval, where the method includes: determining N symbols in the first symbol set as guard intervals according to the uplink channel sending condition of the symbols in the first symbol set; the symbols in the first symbol set belong to symbols at the tail end of a first time unit and the start end of a second time unit, the first time unit and the second time unit are two time units which are continuous in a time domain, frequency domain sub-bands corresponding to the first time unit and the second time unit are different, the number of the symbols in the first symbol set is larger than N, and N is a positive integer.

In a second aspect, an embodiment of the present application provides a method for determining a guard interval, where the method includes: determining N symbols in the first symbol set as guard intervals according to the uplink channel receiving condition of the symbols in the first symbol set; the symbols in the first symbol set belong to symbols at the tail end of a first time unit and the start end of a second time unit, the first time unit and the second time unit are two time units which are continuous in a time domain, frequency domain sub-bands corresponding to the first time unit and the second time unit are different, the number of the symbols in the first symbol set is larger than N, and N is a positive integer.

In a third aspect, an embodiment of the present application provides a terminal device, including: a processing module, configured to determine, according to an uplink channel transmission condition of symbols in a first symbol set, that N symbols in the first symbol set are guard intervals; the symbols in the first symbol set belong to symbols at the tail end of a first time unit and the start end of a second time unit, the first time unit and the second time unit are two time units which are continuous in a time domain, frequency domain sub-bands corresponding to the first time unit and the second time unit are different, the number of the symbols in the first symbol set is larger than N, and N is a positive integer.

In a fourth aspect, an embodiment of the present application provides a network device, including: a processing module, configured to determine, according to an uplink channel reception condition of symbols in a first symbol set, that N symbols in the first symbol set are guard intervals; the symbols in the first symbol set belong to symbols at the tail end of a first time unit and the start end of a second time unit, the first time unit and the second time unit are two time units which are continuous in a time domain, frequency domain sub-bands corresponding to the first time unit and the second time unit are different, the number of the symbols in the first symbol set is larger than N, and N is a positive integer.

In a fifth aspect, an embodiment of the present application provides a terminal device, including: a transceiver, a processor, a memory; the memory stores computer-executable instructions; the processor executes computer-executable instructions stored by the memory, causing the processor to perform a method as in any one of the first aspects.

In a sixth aspect, an embodiment of the present application provides a network device, including: a transceiver, a processor, a memory; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored by the memory, causing the processor to perform the method of any of the second aspects.

In a seventh aspect, this application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the method in any one of the first aspect is implemented.

In an eighth aspect, embodiments of the present application provide a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the method of any one of the second aspects.

The embodiment of the application provides a method, equipment and a storage medium for determining a guard interval, which are used for improving the transmission performance of an uplink channel of a system. The method comprises the following steps: the method comprises the steps of comprehensively analyzing the uplink channel sending conditions of a plurality of symbols at the junction of two continuous time units, and determining N symbols from the junction as a guard interval, wherein N is a positive integer. The N symbols of the determined guard interval are consecutive symbols, and the symbols at both sides of the guard interval belong to symbols of different time units. And the terminal performs frequency sub-band readjustment in the determined guard interval. The influence of the guard interval determined by the method on the sending performance of the uplink channel of the terminal is minimum, and the transmission performance of the uplink channel of the system is improved.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic diagram of a comb structure of an SRS;

FIG. 3 is a schematic diagram illustrating frequency hopping of sounding reference signals SRS at frequency domain resource locations;

fig. 4 is a flowchart of a method for determining a guard interval according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating positions of a guard interval and a first time unit and a second time unit in a time domain according to an embodiment of the present application;

fig. 6 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 9 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 10 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 11 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 12 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 13 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 14 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 15 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 16 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 17 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 18 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 19 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 20 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 21 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 22 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 23 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 24 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 25 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 26 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 27 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 28 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 29 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 30 is a schematic diagram illustrating symbol distribution at a time cell boundary according to an embodiment of the present disclosure;

fig. 31 is a flowchart of a method for determining a guard interval according to an embodiment of the present application;

fig. 32 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 33 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 34 is a schematic hardware structure diagram of a terminal device according to an embodiment of the present application;

fig. 35 is a schematic hardware structure diagram of a network device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," and the like in the description and in the claims, and in the drawings, of the embodiments of the application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than described or illustrated herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application. As shown in fig. 1, the communication system includes a network device and a plurality of terminal devices, such as UE1 to UE6 shown in fig. 1, communicatively connected to the network device. The network device may be a Base Station (BS), and the Base station may be a multi-beam Base station or a single-beam Base station. The terminal device may be a fixed terminal device or a mobile terminal device. The base station and the UEs 1 to 6 form a communication system, in which the base station sends a synchronization signal block SSB, and the UE can determine a time-frequency domain resource of a Physical Downlink Control Channel (PDCCH) based on the SSB to perform PDCCH detection. The UE transmits uplink data, such as user data and uplink control information UCI, on a Physical Uplink Shared Channel (PUSCH) scheduled by downlink control information DCI of the PDCCH. The UE may also transmit UCI on a Physical Uplink Control Channel (PUCCH). In addition, the UE may transmit an Sounding Reference Signal (SRS) on a time-frequency resource of the SRS according to the higher layer parameter indication, so that the base station performs channel quality detection, estimation or beam management.

The technical solution of the embodiment of the present application is mainly applied to a communication system based on an NR technology, such as a 5th generation mobile communication technology (5G) communication system, an NR-light system, and the like. It can also be applied to other communication systems, as long as the other entity needs to interpret the advanced data transmission in some way when the entity in the communication system needs to indicate communication with the other entity, for example, it can be applied to schedule multiple data blocks between a network device and a terminal device, or two terminal devices, one of which takes on the function of accessing the network, etc. In particular, the communication system may be, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Advanced (LTE Advanced) System, an LTE frequency Division Duplex (Freq terminal equipment Division Duplex, FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), and the like.

The terminal device referred to in the technical solution of the embodiment of the present application may be a wireless terminal or a wired terminal. A wireless terminal may refer to a device providing voice and/or other traffic data connectivity to a user, a handheld device having wireless connectivity capabilities, or other processing device connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or called a "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), and the like. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein.

The network device referred to in the technical solution of the embodiment of the present application is a device deployed in a radio Access network for providing a wireless communication function, and may be a Base Transceiver Station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in LTE, or a relay Station or Access point, or a Transceiver point (TRP) in a new air interface NR network, or a next generation Node B (genration Node B, NB), or a Base Station in another future network System, and the like, which are not limited herein.

Before introducing the technical solution of the embodiment of the present application, first, a transmission configuration situation of a physical uplink control channel PUCCH, a physical uplink shared channel PUSCH, and a sounding reference signal SRS in an NR system according to the embodiment of the present application is described in detail.

The PUCCH is used to carry uplink control information UCI, supports 5 different formats, and can be divided into a short format and a long format according to the number of symbols occupied in the time domain, as shown in table 1, where the short format occupies 1-2 symbols and can carry 1-2bit information, and the long format occupies 4-14 symbols and can carry information greater than 2 bits.

TABLE 1

And the base station indicates the time slot of ACK/NACK corresponding to the DCI or the PDSCH scheduled by the DCI through a PDSCH-to-HARQ _ feedback timing indicator information field in the DCI. And the PDSCH-to-HARQ _ feedback timing indicator is used for indicating the value of k, wherein the k represents the time domain position offset value of the ACK/NACK relative to the DCI or the PDSCH scheduled by the DCI. Namely, the DCI or the PDSCH scheduled by the DCI is transmitted in slot n, and the corresponding ACK/NACK is transmitted in slot n + k. For DCI format 1_0, the information field length is 3 bits, and the corresponding value range is {1, 2,3, 4, 5, 6, 7, 8}. For DCI format 1_1, the base station configures a set through high-level signaling, the set includes I elements, each element indicates the value of k, and the information field length is

I is a positive integer not greater than 8.

After the time slot in which the PUCCH is located is determined, the resources of the PUCCH also need to be determined. If the UE does not have a dedicated PUCCH Resource configuration, for example, before a Radio Resource Control (RRC) connection is established, the UE may obtain a PUCCH Resource set according to PUCCH-ResourceCommon in the system message. And the UE transmits HARQ-ACK information in the initial uplink bandwidth part UL BWP according to the PUCCH resources in the PUCCH resource set. As shown in table 2, PUCCH-ResourceCommon indicates one PUCCH resource set index in the following table. The UE numbers n according to the first CCE of PDCCH scheduling PDSCH _CCE,0 And determining PUCCH resources in the PUCCH resource set according to the PUCCH resource indicator information indicated in the DCI. The determined PUCCH resource includes a slot in which the PUCCH resource is located, a Cyclic Shift (CS) and a frequency-domain PRB.

TABLE 2

The UE may be configured with 1-4 dedicated PUCCH resource sets. The first PUCCH resource set only supports the UE to determine PUCCH resources in the PUCCH resource set according to the number of the first CCE of the PDCCH for scheduling the PDSCH and PUCCH resource indicator information indicated in the DCI. The base station configures 1-4 PUCCH resource sets for the UE through RRC signaling. The first PUCCH resource set may configure 1 to 32 PUCCH resources, each PUCCH resource only supports format0 and format1 in table 1, and can only carry UCI of 1-2 bits. If the second, third and fourth PUCCH resource sets are configured, each PUCCH resource set may be configured with 1 to 8 PUCCH resources, and each PUCCH resource in these PUCCH resource sets only supports format2, format3 and format4 in table 1, and may carry UCI of more than 2 bits. The configuration of each PUCCH resource includes resources of different PUCCH formats, including a starting symbol index, a symbol number, code domain information, and the like in a slot, and formats 2 and 3 further include the number of PRBs of the PUCCH and the number of the starting PRB. The resources and the number of bits carried for various PUCCH formats can be seen in table 1.

Each PUCCH resource set is configured with the maximum number of UCI bits that the PUCCH resource set can carry. And the UE determines a first PUCCH resource set capable of meeting the bit number according to the actual bit number carried by the PUCCH. And then the UE determines PUCCH resources in the PUCCH resource set according to the number of the first CCE of the PDCCH for scheduling the PDSCH and PUCCH resource indicator information indicated in the DCI.

In the NR system, the base station schedules PUSCH transmission by transmitting an uplink grant (UL grant, DCI format 0_0 or DCI format 0_1). When the base station schedules uplink data transmission through the DCI of the UL grant, a domain of a timesdomainresource allocation (TDRA) is carried in the DCI, where the TDRA domain is 4 bits, and may indicate 16 different rows in a resource allocation table, where each row includes different resource allocation combinations, for example, the starting position S, the length L, k2, and different types of the PUSCH. Wherein k2 represents the number of offset slots between the slot where the DCI is located and the slot where the PUSCH is located, which can be specifically seen in tables 3 and 4.

TABLE 3

TABLE 4

μ _PUSCH	j
0	1
1	1
2	2
3	3

Table 4 shows the values of j, where μ _PUSCH Is the sub-carrier spacing, mu, of the

PUSCH

_PUSCH 0,1,2,3 indicate subcarrier spacings of 15khz,30khz,60khz,120khz, respectively.

The Type of the PUSCH time domain resource allocation comprises Type A and Type B. The value ranges of the S candidate values and the L candidate values corresponding to the Type A and the Type B are different. Type A is mainly oriented to slot-based services, S is relatively front, and L is relatively long. Type B mainly faces URLLC service, and has higher requirement on time delay, so the position of S is more flexible so as to transmit the URLLC service arriving at any time, L is shorter, and the transmission time delay can be reduced. The selectable value ranges of S and L are shown in table 5.

TABLE 5

There are two ways of allocating frequency domain resources of PUSCH: type0 and Type1. The base station can be configured through high-layer signaling or can dynamically indicate through DCI. The Type0 frequency domain resource allocation method indicates the RBGs allocated to the UE through bitmap, and the number of resource blocks RB included in the RBGs is related to the higher layer parameter Configuration (Configuration 1 and Configuration 2) and the BWP Size (Bandwidth Part Size), as shown in table 6. The Type1 frequency domain resource allocation mode jointly encodes the starting position (S) and the length (L) of the resource to form an RIV (resource indication value). One set of (S, L) and one RIV value are in one-to-one correspondence, and the UE can deduce the corresponding (S, L) by the RIV value. S indicates the position of the virtual RB, and L indicates the number of allocated consecutive RBs.

TABLE 6

BWP size	Configuration	1	Configuration 2
1–36	2	4
37–72	4	8
73–144	8	16
145–275	16	16

In the NR system, the uplink Reference signal includes a Demodulation Reference signal DMRS (Demodulation Reference Signals) and an SRS (sounding Reference signal). Both DMRS, which are transmitted with the PUCCH or PUSCH and thus estimate the uplink channel from the same frequency location, and SRS, which are not transmitted with the PUCCH or PUSCH and thus estimate the uplink channel from a different frequency location, can be used for channel estimation.

For SRS reference signals: the network may configure one or more SRS resource sets (resource sets) for the UE. The purpose of configuring multiple SRS resource sets may be for uplink and downlink multi-antenna precoding, or for uplink and downlink beam management. One SRS resource set may include one or more SRS resources, and each SRS resource occupies time-frequency domain resources of:

the SRS occupies 1,2 or 4 consecutive symbols of the last 6 symbols in a slot in the time domain. For SRS-for-positioning, the SRS occupies 1,2, 4, 8, 12 consecutive symbols of all 14 symbols in a slot in the time domain. There are three time domain transmission modes of SRS: periodic, semi-continuous, and non-periodic. The period SRS is a period for configuring sending SRS by the period and offset of slot level, wherein the minimum is 1 slot, and the maximum is 2560 slots; the semi-continuous SRS adds the activation and deactivation signaling of the MAC layer on the basis of periodic transmission; the aperiodic SRS is triggered by DCI format 0_1 and DCI format 1_1, where SRS request indicates a specific SRS resource set, and DCI format 2-3 may trigger aperiodic SRS only in special cases (SRS switch).

The SRS may occupy 4-272 RBs in the frequency domain. The maximum bandwidth of BWP in NR is 275 RBs, and the frequency domain resource bandwidth of SRS can satisfy sounding (sounding) under BWP configuration of various bandwidths. The SRS bandwidth is an integer multiple of 4. The frequency domain resources of SRS have two different comb structures, comb2 and comb4, respectively. comb2 maps one RE for every other subcarrier, comb4 maps one RE for every other three subcarriers, see fig. 2. Frequency hopping is also supported by the frequency domain resource position of the SRS, and fig. 3 shows a schematic diagram of frequency hopping of the frequency domain resource position of the SRS, as shown in fig. 3, the SRS occupies the last 4 symbols of a slot, and the frequency domain resource positions corresponding to the last 4 symbols are different.

One SRS resource may have 1,2, or 4 ports, and each port occupies the same SRS resource and is distinguished from each other by orthogonality of ZC sequences. The SRS of the UEs may be Time-division multiplexing (TDM) within one slot, or may be Frequency-division multiplexing (FDM) with a comb structure.

Collision processing of SRS with other channels:

1) When the SRS and the PUCSH are transmitted in the same slot, the SRS should be transmitted after the PUSCH;

2) When the SRS and the PUCCH are in the same carrier, and the periodic or semi-continuous SRS is configured in the same symbol as the PUCCH only carrying Channel State Information (CSI) report or L1-RSRP report, the UE does not transmit the SRS;

3) When the periodic/semi-persistent SRS is configured or the aperiodic SRS is triggered within the same symbol as the PUCCH carrying the HARQ-ACK and/or SR, the UE does not transmit the SRS;

4) When the carriers are aggregated, the SRS on one carrier and the PUSCH/PUCCH/DM-RS/PT-RS on the other carrier cannot be transmitted on the same symbol;

5) When the SRS configurations of three different time domain modes collide, the priority order is: aperiodic > half-duration > period.

The NR system is designed mainly to support the eMBB service, and its main technology is to meet the requirements of high rate, high spectral efficiency, and large bandwidth. In fact, in addition to the eMBB, there are a number of different traffic types, for example: sensor networks, video surveillance, wearable, etc., which have different requirements from the eMBB service in terms of rate, bandwidth, power consumption, cost, etc. The capabilities of terminals supporting these services are reduced compared to terminals supporting eMBB, such as reduced supported bandwidth, relaxed processing time, reduced number of antennas, etc. To better support other traffic types than eMBB traffic, it is necessary to optimize the NR system, called NR-light system, for these traffic and the corresponding low-power terminals.

In the NR-light system, the bandwidth supported by the low-power terminals is relatively limited, and in order to improve the performance of channel transmission, the channel transmission may be performed in a frequency hopping manner. The terminal needs to retune (reconfigure) the receiver bandwidth from one bandwidth to another, during which the terminal cannot receive and transmit channels, which will affect the transmission performance of the system channels. Since the flexibility of time domain resource configuration of the control channel in the NR system is relatively high, under different control channel resource configurations, a corresponding guard interval needs to be defined to ensure the transmission performance of the NR-Light system.

In view of the above, embodiments of the present application provide a method for determining a guard interval, in which the above-mentioned bandwidth retuning (or called frequency subband retuning) occurs at a boundary between two consecutive time units (e.g., a first time unit and a second time unit), and the bandwidths of the two consecutive time units are different, so that the guard interval is determined from the boundary between the two consecutive time units based on an uplink channel transmission condition of a symbol at the boundary between the two time units. The guard interval of the embodiment of the present application may be one symbol or a plurality of consecutive symbols, where the symbol on the left side of the guard interval belongs to the first time unit and the symbol on the right side of the guard interval belongs to the second time unit. Specifically, the method provided by the embodiment of the present application mainly relates to analysis of a terminal side uplink channel transmission condition and analysis of a network side uplink channel reception condition, and determines an appropriate guard interval based on an uplink channel transmission condition, so as to ensure that the selected guard interval has a minimum influence on transmission of at least one of a PUSCH, a PUCCH, and an SRS, and improve transmission performance of a system uplink channel.

The technical solution of the present application will be described in detail with specific embodiments in conjunction with the accompanying drawings. The following specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 4 is a flowchart of a method for determining a guard interval according to an embodiment of the present disclosure. As shown in fig. 4, the method provided in this embodiment may be applied to any UE shown in fig. 1, and the method includes the following steps:

step 101, determining N symbols in the first symbol set as guard intervals according to the uplink channel transmission condition of the symbols in the first symbol set.

In the embodiment of the present application, the symbols in the first symbol set belong to symbols at the end of a first time unit and at the beginning of a second time unit, the first time unit and the second time unit are two time units consecutive in the time domain, the first time unit is before, and the second time unit is after. The frequency domain sub-bands corresponding to the first time unit and the second time unit are different, the number of symbols in the first symbol set is greater than N, and N is a positive integer. It should be noted that the time unit in the embodiment of the present application may be a radio frame, a subframe, a timeslot, and the like, and the embodiment of the present application is not limited in any way.

The symbols in the first symbol set in the embodiments of the present application may be understood as symbols at the boundary between the first time unit and the second time unit. As an example, assuming that the number N of symbols of the guard interval is 1, the ue may select one symbol from two symbols at the boundary between the first time unit and the second time unit, wherein the two symbols at the boundary may be the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit. As another example, assuming that the number of symbols of the guard interval is 2, the UE may select consecutive 2 symbols from four symbols at the boundary between the first time unit and the second time unit, where the four symbols at the boundary may be the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit.

In this embodiment, the uplink channel transmission condition of the symbols in the first symbol set includes: at least one of transmitting PUSCH, transmitting PUCCH, transmitting SRS, or not transmitting a channel. I.e. any one of the first set of symbols may be used for transmitting PUSCH, transmitting PDCCH, transmitting SRS or not transmitting channels.

The N symbols of the guard interval determined in the embodiment of the present application are consecutive symbols, and the symbols on both sides of the guard interval belong to different time units. Fig. 5 shows a schematic diagram of positions of the guard interval and the first time unit and the second time unit in the time domain, as can be seen from fig. 5, the guard interval is located at a boundary of the first time unit and the second time unit, a symbol on the left side of the guard interval belongs to a symbol of the first time unit, and a symbol on the right side of the guard interval belongs to a symbol of the second time unit.

And the terminal equipment determines N symbols in the first symbol set as guard intervals according to the uplink channel sending condition of the symbols in the first symbol set. The guard interval of N symbols includes the following cases: (1) the last N symbols at the end of the first time unit; (2) the first N symbols at the beginning of the second time unit; (3) Consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.

As an example, when N is 1, the guard interval may be the last symbol at the end of the first time unit, or the first symbol at the beginning of the second time unit. As an example, when N takes a value of 2, the guard interval may be the last two symbols at the end of the first time unit, or the first two symbols at the beginning of the second time unit, or the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit. As an example, when N takes a value of 3, the guard interval may be the last three symbols at the end of the first time unit, or the first three symbols at the beginning of the second time unit, or consecutive 3 symbols selected from the last 2 symbols at the end of the first time unit and the first 2 symbols at the beginning of the second time unit.

The above examples show several possible cases of the guard intervals corresponding to different N values, and for several possible cases of any one guard interval corresponding to an N value, it is necessary to perform comprehensive analysis by combining the uplink channel transmission conditions of each symbol at the time unit boundary to determine the final guard interval. In the comprehensive analysis, the type of the uplink channel of the symbol at the boundary (e.g. PUSCH, PUCCH, no transmission channel), the type of the information carried by the uplink channel (e.g. only user information, simultaneous user information and UCI, the type of user information, the type of UCI, etc.), the type of SRS (e.g. SRS for positioning, SRS for sounding), or the transmission mode of the SRS (periodic, aperiodic, semi-persistent) need to be considered, so that the finally selected symbol as the guard interval has minimal influence on the uplink channel transmission performance of the terminal. In the NR system, since the channel resource configurations of different time units are very flexible, the uplink channel transmission conditions of symbols at the boundary of two consecutive time units are more, and the factors considered by comprehensive analysis are different, and the details can be seen in the following embodiments.

And 102, performing corresponding operation at the determined guard interval.

The operation of the UE in the determined guard interval comprises at least one of the following:

no transmission/transmission channel; carrying out frequency sub-band readjustment; and carrying out rate matching on symbols belonging to a guard interval in the symbols for transmitting the uplink channel.

The frequency subband retuning in the embodiment of the present application refers to that the UE adjusts the bandwidth of the receiver from the bandwidth of the first time unit to the bandwidth of the second time unit. During the frequency subband retuning, the UE may not receive or transmit the channel, and the UE may further continue to transmit the channel on the symbol serving as the guard interval according to the preset transmission condition of the symbol, which is not limited in this embodiment of the present application.

The rate matching in the embodiment of the present application means that, according to a determined guard interval, when an uplink channel includes a symbol as the guard interval, the UE does not map to the symbol as the guard interval when performing modulation mapping on data carried by the channel. For example, assuming that the UE plans to transmit the PUSCH on the last 10 symbols at the end of the first time unit, where the last 1 symbol at the end of the first time unit is used as a guard interval, the UE may adjust the time domain resource of the PUSCH and transmit the PUSCH on 9 symbols excluding the last 1 symbol in the last 10 symbols at the end of the first time unit, so as to ensure the reliability of uplink channel transmission.

The method for determining the guard interval provided in the embodiment of the present application determines N symbols as the guard interval by comprehensively analyzing the uplink channel transmission conditions of a plurality of symbols at the junction of two consecutive time units, where N is a positive integer. The N symbols of the determined guard interval are consecutive symbols, and the symbols at both sides of the guard interval belong to symbols of different time units. And the terminal performs frequency sub-band readjustment in the determined guard interval. The influence of the guard interval determined by the method on the sending performance of the uplink channel of the terminal is minimum, and the transmission performance of the uplink channel of the system is improved.

The above embodiment shows that the terminal performs comprehensive analysis according to the uplink channel transmission conditions of multiple symbols at the boundary of two consecutive time units to determine the guard interval. The uplink channel transmission condition of the symbol at the boundary of two continuous time units comprises at least one of sending PUSCH, sending PUCCH, sending SRS or not sending channel. Specifically, the terminal determines the guard interval according to the uplink channel transmission condition of the symbols at the boundary of two consecutive time units (i.e. the symbol distribution condition of each uplink channel transmission type in the first symbol set) and the priority order of the channel transmission types, and takes the symbol with the lower priority of the channel transmission type as the guard interval.

Taking 1 as an example of the number of symbols of the guard interval, if the channel transmission types of the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit are the same, the terminal may select the last symbol at the end of the first time unit or the first symbol at the beginning of the second time unit as the guard interval. And if the channel transmission types of the last symbol at the tail end of the first time unit and the first symbol at the starting end of the second time unit are different, the terminal selects a symbol with lower priority as a guard interval according to the priority sequence of the channel transmission types of the last symbol at the tail end of the first time unit and the first symbol at the starting end of the second time unit.

Taking the number of symbols of the guard interval as 2, for example, the terminal selects two consecutive symbols from the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit as the guard interval. Firstly, a symbol with lower priority is selected from the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit as a guard interval, and then a symbol with lower priority is selected from two adjacent symbols of the selected symbol as another symbol of the guard interval.

It should be noted that, for the symbols for transmitting the PUSCH, the symbols for transmitting the PUSCH may be further subdivided into the symbols for the PUSCH carrying the UCI and the symbols for the PUSCH not carrying the UCI according to the type of the PUSCH carrying information. The network side can set the priority order of the symbols of the PUSCH carrying different information types. For the SRS transmission symbol, the SRS transmission symbol may be subdivided into a positioning SRS transmission symbol and a sounding SRS transmission symbol according to the SRS type, and the SRS transmission symbol may be subdivided into a periodic SRS transmission symbol, an aperiodic SRS transmission symbol, and a semi-persistent SRS transmission symbol according to the SRS transmission scheme. The network side may set the priority order of the symbols carrying different SRS types, and/or set the priority order of the symbols carrying SRS of different transmission manners.

In the embodiment of the present application, the priority order of the channel transmission types of the symbols includes the following setting modes:

(1) PUCCH transmission > PUSCH transmission > SRS transmission > No channel transmission. The setting mode does not consider the type of the PUSCH bearing information, the type of the SRS and the sending mode, the terminal preferentially selects the symbol of the channel which is not sent at the junction of two time units as a guard interval, if the symbol of the channel which is not sent at the junction does not exist, the symbol of the channel which is not sent is preferentially selected as the guard interval, then the symbol of the PUSCH is selected and sent, and finally the symbol of the PUCCH is sent.

(2) PUCCH transmission > SRS transmission > PUSCH transmission > no channel transmission. The setting mode does not consider the type of the PUSCH bearing information, the type of the SRS and the sending mode, the terminal preferentially selects the symbol of the channel which is not sent at the junction of two time units as a guard interval, if the symbol of the channel which is not sent at the junction does not exist, the symbol of the PUSCH is preferentially selected as the guard interval, then the symbol of the SRS is selected, and finally the symbol of the PUCCH is sent.

(3) Transmission PUCCH = PUSCH carrying UCI > SRS > channel not transmitted. The setting mode considers the type of PUSCH bearing information, the priority of the PUSCH bearing UCI is the same as that of the PUCCH, if no symbol of a channel is not sent at the junction of two time units, the symbol for sending the SRS is preferentially selected as a guard interval, the symbol for sending the PUSCH not bearing UCI is then selected as a guard interval, and finally the symbol for sending the PUCCH or the symbol for sending the PUSCH bearing UCI is sent.

(4) Sending PUCCH, sending sounding SRS, sending PUSCH, sending positioning SRS and not sending channels. The setting mode takes the SRS type into consideration, if no symbol of a channel is not transmitted at the junction of two time units, the terminal preferentially selects the symbol for transmitting the positioning SRS as a guard interval, if no symbol for transmitting the positioning SRS is transmitted at the junction, the symbol for transmitting the PUSCH is preferentially selected as the guard interval, then the symbol for transmitting the sounding SRS is selected, and finally the symbol for transmitting the PUCCH is selected.

(5) Transmission PUCCH = transmission PUSCH carrying UCI > transmission sounding SRS > transmission PUSCH not carrying UCI > transmission positioning SRS > no transmission channel. In this setting, the PUSCH is further subdivided based on the fourth setting.

(5) Sending PUCCH > sending aperiodic SRS > sending PUSCH > sending periodic/semi-persistent SRS > not sending channels. The setting mode considers the sending type of the SRS, if no symbol of a channel is not sent at the junction of two time units, the terminal preferentially selects the symbol of the sending periodic/semi-continuous SRS as a guard interval, if no symbol of the sending periodic/semi-continuous SRS is sent at the junction, the terminal preferentially selects the symbol of the sending PUSCH as the guard interval, then selects the symbol of the sending non-periodic SRS, and finally sends the symbol of the PUCCH.

(6) Transmission PUCCH = PUSCH carrying UCI > PUSCH non-periodic SRS transmission > PUSCH not carrying UCI > transmission periodic/semi-persistent SRS > no channel transmission. In the setting mode, the PUSCH is further subdivided on the basis of the fifth setting mode.

The setting of the priority order of the channel transmission types of the symbols is only an example, and in practical application, the setting may be performed according to practical requirements, and the embodiment of the present application is not limited in any way.

In summary, the terminal may preferentially select, according to the preset uplink channel transmission condition of the symbols in the first symbol set and the priority order of the channel transmission types of the preset symbols, a symbol with a lower priority of the channel transmission type from the first symbol set as a guard interval, where the selected guard interval is consecutive N symbols, and the symbols on the left and right sides of the guard interval belong to different time units, and the consecutive N symbols may be symbols of the same channel transmission type or symbols of multiple channel transmission types. If the continuous N symbols comprise symbols of multiple channel transmission types, the number of the symbols with low priority of the channel transmission type is larger than or equal to the number of the symbols with high priority of the channel transmission type, namely the terminal preferentially selects the symbols with low priority of the channel transmission type as a guard interval.

Since the uplink channel transmission of multiple symbols at the boundary of two consecutive time units is more, the following describes in detail the method for determining the guard interval of various symbol distribution conditions at the boundary of two consecutive time units with reference to fig. 6 to fig. 30. The distribution of symbols at the time cell boundary, i.e. the distribution of symbols in the first set of symbols. Since each symbol in the first symbol set may be used for transmitting PUSCH, PUCCH, SRS, or no channel, accordingly, the first symbol set may include only one type of symbol, and may also include multiple types of symbols.

The following describes the case where only one type of symbol is included in the first set of symbols, referring to fig. 6 to 13 of the drawings.

In the first case, a plurality of symbols at the boundary of the first time unit and the second time unit are all used for transmitting PUSCH, i.e. the symbols in the first set of symbols are all used for transmitting PUSCH. The guard interval may be the last N symbols at the end of the first time unit, or the first N symbols at the end of the second time unit, or consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.

Fig. 6 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 6, the number N of guard interval symbols is 1, and the symbols in the first symbol set include the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit. In this example, the guard interval may be the guard interval shown in (a) of fig. 6, i.e., the last symbol at the end of the first time unit, or may be the guard interval shown in (b) of fig. 6, i.e., the first symbol at the beginning of the second time unit.

Fig. 7 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 7, the number N of guard interval symbols is 2, and the symbols in the first symbol set include the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit. In this example, the guard interval may be the guard interval shown in (a) of fig. 7, i.e., the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit, may also be the guard interval shown in (b) of fig. 7, i.e., the last two symbols at the end of the first time unit, and may also be the guard interval shown in (c) of fig. 7, i.e., the first two symbols at the beginning of the second time unit.

In the first case, if the guard interval is the last N symbols at the end of the first time unit, or the first N symbols at the end of the second time unit. Whether the last N symbols at the end of the first time unit are selected as the guard interval or the first N symbols at the beginning of the second time unit are selected as the guard interval may be determined by: and determining the guard interval according to the types of information sent by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit. Wherein, the type of the symbol transmission information includes transmitting only the user information, or transmitting the user information and the UCI simultaneously.

As an example, if the last N symbols at the end of the first time unit are all used for transmitting only the user information and the first N symbols at the beginning of the second time unit are all used for simultaneously transmitting the user information and the UCI, the last N symbols at the end of the first time unit, which are used for transmitting only the user information, are used as the guard interval. In the implementation manner, the terminal determines the guard interval according to the type of the PUSCH bearer information, takes the symbols of the PUSCH carrying low-priority information as the guard interval, and takes the N symbols of the PUSCH only transmitting the user information as the PUSCH bearer user information and the UCI have higher priority than the PUSCH only carrying the user information.

Further, if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit receive the same type of information, the terminal may also determine the guard interval according to the type of user information sent by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, or the type of UCI.

In a possible implementation manner, if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both only used for sending user information, the terminal may further determine to select the last N symbols or the first N symbols as the guard interval according to the type of the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit for sending user information. The type of the user information may be a type of a service, for example, the service type is service 1, service 2, service 3, and the like. The type of user information may also be Msg3 or MsgA bearing information, as well as non-Msg 3 or MsgA information. The terminal may determine the guard interval according to the priority of the user information. As an example, the network side may determine the priority information of the user information type through information indicated by the PDCCH, for example, through a timing parameter K0 in the PDCCH. In this implementation manner, the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are different in type of sending user information, the last N symbols at the end of the first time unit are the same in type of sending user information, and the first N symbols at the beginning of the second time unit are the same in type of sending user information. The terminal may determine whether to select the last N symbols or the first N symbols according to a priority of preset user information.

In another possible implementation manner, if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both used to simultaneously transmit user information and UCI, the terminal may further determine to select the last N symbols or the first N symbols as the guard interval according to the type of UCI for transmitting PUSCH from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit. The type of the UCI carried by the PUSCH comprises information such as HARQ-ACK and CSI. As an example, the PUSCH carrying the HARQ-ACK has higher priority than the PUSCH carrying the CSI, and N symbols for transmitting the CSI of the PUSCH may be used as the guard interval. Of course, the priority of the PUSCH carrying CSI may also be set to be higher than that of the PUSCH carrying HARQ-ACK, which is not limited in this embodiment of the present application. In this implementation manner, the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit send UCI of the PUSCH in different types, and the last N symbols at the end of the first time unit send UCI of the PUSCH in the same type, and the first N symbols at the beginning of the second time unit send UCI of the PUSCH in the same type. The terminal may determine whether to select the last N symbols or the first N symbols according to a priority of a preset UCI type.

In the first case, the terminal selects continuous N symbols as the guard interval from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit according to the type of the information of the PUSCH transmitted by the symbols in the first symbol set, and the symbols on both sides of the guard interval belong to symbols of different time units. Wherein the selection of which information type symbol depends on the priority of the information type of the preset PUSCH. The information type for carrying the PUSCH only carries the user information, or simultaneously carries the user information and the UCI, and the priority of the type of the user information or the UCI can be further refined. The protection interval determined by the method has the minimum influence on the transmission of the PUSCH, and the transmission of the PUSCH information with high priority is ensured.

In the second case, a plurality of symbols at the boundary of the first time unit and the second time unit are all used for transmitting the PUCCH, i.e., the symbols in the first symbol set are all used for transmitting the PUCCH. The guard interval may be the last N symbols at the end of the first time unit, or the first N symbols at the end of the second time unit, or consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.

Fig. 8 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 8, the number N of guard interval symbols is 1, and the symbols in the first symbol set include the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit. In this example, the guard interval may be the guard interval shown in (a) of fig. 8, i.e., the last symbol at the end of the first time unit, or may be the guard interval shown in (b) of fig. 8, i.e., the first symbol at the beginning of the second time unit.

Fig. 9 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 9, the number N of guard interval symbols is 2, and the symbols in the first symbol set include the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit. In this example, the guard interval may be the guard interval shown in (a) of fig. 9, i.e., the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit, may also be the guard interval shown in (b) of fig. 9, i.e., the last two symbols at the end of the first time unit, and may also be the guard interval shown in (c) of fig. 9, i.e., the first two symbols at the beginning of the second time unit.

In the second case, if the guard interval is the last N symbols at the end of the first time unit, or the first N symbols at the end of the second time unit. Whether the last N symbols at the end of the first time unit are selected as the guard interval or the first N symbols at the beginning of the second time unit are selected as the guard interval may be determined by:

and determining a guard interval according to the type of UCI of the PUCCH sent by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit. The type of UCI carried by the PUCCH comprises information such as HARQ-ACK, CSI and the like. As an example, the PUCCH carrying the HARQ-ACK has higher priority than the PUCCH carrying the CSI, and N symbols for transmitting the CSI of the PUCCH may be used as a guard interval. Of course, the priority of the PUCCH carrying CSI may also be set to be higher than that of the PUCCH carrying HARQ-ACK, which is not limited in this embodiment of the present application. In this implementation, the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit transmit UCI of the PUCCH in different types, and the last N symbols at the end of the first time unit transmit UCI of the PUCCH in the same type, and the first N symbols at the beginning of the second time unit transmit UCI of the PUCCH in the same type. The terminal may determine whether to select the last N symbols or the first N symbols according to a priority of a preset UCI type.

In the second case, the terminal transmits UCI type of PUCCH through symbols in the first symbol set, and selects consecutive N symbols as a guard interval from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, where the symbols on both sides of the guard interval belong to symbols of different time units. The selection of which UCI type symbol depends on the priority of the type of the pre-set UCI, that is, the terminal determines the guard interval according to the priority order of the types of UCI carried by the PUCCH, and uses the symbol of the PUCCH carrying the UCI type with low priority as the guard interval. The influence of the guard interval determined by the method on the transmission performance of the PUCCH is minimum, and the transmission of the PUCCH information with high priority is ensured.

In a third case, none of the symbols at the boundary between the first time unit and the second time unit is transmitted, i.e. none of the symbols in the first set of symbols is transmitted. The guard interval may be the last N symbols at the end of the first time unit, or the first N symbols at the end of the second time unit, or consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.

Fig. 10 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 10, the number N of guard interval symbols is 1, and the symbols in the first symbol set include the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit. In this example, the guard interval may be the guard interval shown in (a) of fig. 10, i.e., the last symbol at the end of the first time unit, or may be the guard interval shown in (b) of fig. 10, i.e., the first symbol at the beginning of the second time unit.

Fig. 11 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 11, the number N of guard interval symbols is 2, and the symbols in the first symbol set include the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit. In this example, the guard interval may be the guard interval shown in (a) of fig. 11, i.e., the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit, may also be the guard interval shown in (b) of fig. 11, i.e., the last two symbols at the end of the first time unit, and may also be the guard interval shown in (c) of fig. 11, i.e., the first two symbols at the beginning of the second time unit.

In the third case, the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit do not send channels, the terminal may select the last N symbols at the end of the first time unit as a guard interval, may also select the first N symbols at the beginning of the second time unit as a guard interval, may also select consecutive N symbols from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit as a guard interval, may set any one of the three selection manners according to a predefined rule, and does not limit the embodiment of the present application. The influence of the guard interval determined by the method on the transmission performance of the uplink channel of the terminal is minimum, and the transmission performance of a communication system is ensured.

In a fourth case, a plurality of symbols at the boundary of the first time unit and the second time unit are all used for transmitting the SRS, that is, all symbols in the first symbol set are used for transmitting the SRS. The guard interval may be the last N symbols at the end of the first time unit, or the first N symbols at the end of the second time unit, or consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.

Fig. 12 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 12, the number N of guard interval symbols is 1, and the symbols in the first symbol set include the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit. In this example, the guard interval may be the guard interval shown in (a) of fig. 12, i.e., the last symbol at the end of the first time unit, or may be the guard interval shown in (b) of fig. 12, i.e., the first symbol at the beginning of the second time unit.

Fig. 13 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 13, the number N of guard interval symbols is 2, and the symbols in the first symbol set include the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit. In this example, the guard interval may be the guard interval shown in (a) of fig. 13, i.e., the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit, may also be the guard interval shown in (b) of fig. 13, i.e., the last two symbols at the end of the first time unit, and may also be the guard interval shown in (c) of fig. 13, i.e., the first two symbols at the beginning of the second time unit.

In the fourth case, if the guard interval is the last N symbols at the end of the first time unit, or the first N symbols at the end of the second time unit. Whether the last N symbols at the end of the first time unit are selected as the guard interval or the first N symbols at the beginning of the second time unit are selected as the guard interval may be determined by:

in a possible implementation manner, a guard interval is determined according to the type of SRS transmitted by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit. The SRS type includes SRS used for positioning and SRS used for sounding. The SRS for sounding may only be transmitted on the last 6 symbols of the slot, and the SRS for positioning may be transmitted on any symbol within the slot. As an example, the SRS for sounding has a higher priority than the SRS for positioning, and the N symbols for transmitting the SRS for positioning may be used as a guard interval. Of course, the SRS used for positioning may also be set to have a higher priority than the SRS used for sounding, and the embodiment of the present application is not limited in any way. In this implementation, the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit transmit SRS of different types, the last N symbols at the end of the first time unit transmit SRS of the same type, and the first N symbols at the beginning of the second time unit transmit SRS of the same type. The terminal may determine whether to select the last N symbols or the first N symbols according to a priority of a preset SRS type.

In a possible implementation manner, the guard interval is determined according to a transmission manner of SRS transmission in last N symbols at the end of the first time unit and in first N symbols at the beginning of the second time unit. The SRS is transmitted in three ways: periodic, semi-continuous, or non-periodic. As an example, aperiodic SRS takes priority over semi-persistent SRS, which takes priority over periodic SRS. If the last N symbols at the end of the first time unit are all used for transmitting the aperiodic SRS, and the first N symbols of the second time unit are all used for transmitting the periodic SRS, the first N symbols for transmitting the periodic SRS may be used as guard intervals. Optionally, the priority of the periodic SRS and the semi-persistent SRS may be the same. In this implementation, the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit have different SRS transmission modes, and the last N symbols at the end of the first time unit have the same SRS transmission mode, and the first N symbols at the beginning of the second time unit have the same SRS transmission mode. The terminal may determine to select the last N symbols or the first N symbols according to the priority of the preset SRS transmission mode.

In a possible implementation manner, the guard interval is determined according to the type of SRS transmitted from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit and the SRS transmission manner. As an example, the network side may set the following priority order: aperiodic sounding SRS > periodic sounding SRS > aperiodic positioning SRS > periodic positioning SRS. Of course, other priority orders may also be set, and the embodiment of the present application is not limited in any way. In this implementation, the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit have different combinations of SRS transmission types and transmission methods, the last N symbols at the end of the first time unit have the same combination of SRS transmission types and transmission methods, and the first N symbols at the beginning of the second time unit have the same combination of SRS transmission types and transmission methods. The terminal may determine to select the last N symbols or the first N symbols according to a preset SRS type and priority of a transmission mode combination.

In the fourth case, the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit both transmit SRS, and the terminal may select the last N symbols at the end of the first time unit as a guard interval, may select the first N symbols at the beginning of the second time unit as a guard interval, and may select consecutive N symbols from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit as a guard interval. Specifically, the N consecutive symbols may be selected according to the type and/or transmission mode of the SRS to be transmitted, that is, the terminal determines the guard interval according to the priority order of the preset SRS type, or according to the priority order of the SRS transmission mode, or according to the combined priority order of the SRS type and the transmission mode, and uses the symbol for transmitting the low-priority SRS as the guard interval. The influence of the guard interval determined by the method on the SRS transmission of the terminal is minimum, and the transmission of the SRS with high priority is ensured.

The following describes the case where two types of symbols are included in the first symbol set. Fig. 14 to 17 relate to the drawings.

In the first case, if the symbols in the first symbol set are used for transmitting PUSCH and SRS, the guard interval is to select consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the symbols on both sides of the guard interval belong to symbols of different time units. The consecutive N symbols may include only symbols of the same type or may include symbols of different types. If the symbols of different types are included, the number of symbols for transmitting the PUSCH in the continuous N symbols is larger than or equal to the number of symbols for transmitting the SRS, or the number of symbols for transmitting the SRS is larger than or equal to the number of symbols for transmitting the PUSCH.

In the above situation, the terminal selects, as the guard interval, a symbol with a lower priority of a transmission type from the first symbol set according to a symbol distribution of PUSCH transmission and SRS transmission in the first symbol set and a preset priority order of PUSCH transmission and SRS transmission. If the priority of sending the PUSCH is higher than that of sending the SRS, the terminal preferentially selects a symbol of sending the PUSCH as a protection interval, and if the priority of sending the SRS is higher than that of sending the PUSCH, the terminal preferentially selects the symbol of sending the SRS as the protection interval. The network side can also set a more detailed priority order based on at least one of the SRS type, the sending mode and the PUSCH bearing information type, and the terminal selects a symbol with lower priority as a guard interval based on the set priority order.

In some embodiments, if the last N symbols at the end of the first time unit in the first set of symbols are all used for transmitting PUSCH and the first N symbols at the beginning of the second time unit are all used for transmitting SRS, or the last N symbols at the end of the first time unit in the first set of symbols are all used for transmitting SRS and the first N symbols at the beginning of the second time unit are all used for transmitting PUSCH, the guard interval may be the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit. Specifically, the terminal may determine the guard interval according to at least one of a type of sending the SRS from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, a sending manner of the SRS, and a type of sending the PUSCH information. The sending SRS type comprises SRS used for positioning and SRS used for sounding, the sending mode comprises periodic, semi-continuous and non-periodic sending, and the sending PUSCH information type comprises sending user information only and sending user information and UCI simultaneously.

In one possible implementation manner, the terminal may determine the guard interval according to the information type of the PUSCH transmitted by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit. If the information of the PUSCH transmitted by the first N symbols or the last N symbols includes UCI, the N symbols for transmitting the SRS are taken as a guard interval, and the type or the transmission mode of the SRS is not considered here. In the implementation manner, the priority of sending the PUSCH including the UCI is higher than that of sending the SRS, the determined guard interval has the least influence on the terminal to send the UCI, and transmission of the UCI of the PUSCH with high priority is ensured.

In one possible implementation manner, the terminal may determine the guard interval according to the type of SRS transmitted by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit. And if the type of the SRS transmitted by the first N symbols or the last N symbols is the SRS used for positioning, taking the N symbols for transmitting the SRS used for positioning as a guard interval. And if the type of the SRS transmitted by the first N symbols or the last N symbols is the SRS used for sounding, taking the N symbols for transmitting the PUSCH as a guard interval. In the implementation mode, the priority of sending the sounding SRS is higher than that of sending the PUSCH, the priority of sending the PUSCH is higher than that of sending the sounding SRS, the influence of the determined guard interval on the sending of the sounding SRS by the terminal is minimum, and the transmission of the sounding SRS with high priority is ensured.

In a possible implementation manner, the terminal may determine the guard interval according to a transmission manner of the SRS transmitted by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit. And if the transmission mode of the SRS transmitted by the first N symbols or the last N symbols is a period, taking the N symbols for transmitting the periodic SRS as a guard interval. If the transmission mode of transmitting the SRS in the first N symbols or the last N symbols is semi-continuous, the N symbols for transmitting the semi-continuous SRS are taken as a guard interval. And if the transmission mode of the SRS transmitted by the first N symbols or the last N symbols is non-periodic, taking the N symbols for transmitting the PUSCH as a guard interval. In the implementation mode, the priority of sending the aperiodic SRS is higher than that of sending the PUSCH, the priority of sending the PUSCH is higher than that of the periodic/semi-continuous SRS, the determined guard interval has the minimum influence on the sending of the aperiodic SRS by the terminal, and the transmission of the high-priority aperiodic SRS is ensured.

Fig. 14 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 14, the number N of guard interval symbols is 1, and in this example, the guard interval may be the last symbol at the end of the first time unit shown in (a) of fig. 14 for transmitting the SRS, may be the first symbol at the beginning of the second time unit shown in (b) of fig. 14 for transmitting the positioning SRS, and may also be the last symbol at the end of the first time unit shown in (c) of fig. 14 for transmitting the PUSCH not carrying the UCI. The number N of guard intervals is 2, and the selection principle is similar, which is not described herein again.

In the second case, if the symbols in the first symbol set are used for transmitting PUCCH and SRS, the guard interval is continuous N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the symbols on both sides of the guard interval belong to symbols of different time units. The consecutive N symbols may include only symbols of the same type or may include symbols of different types. If different types of symbols are included, the number of symbols for transmitting SRS in the continuous N symbols is larger than or equal to the number of symbols for transmitting PUSCH.

In the above case, the terminal selects, as the guard interval, a symbol of a lower priority of a transmission type from the first symbol set according to a symbol distribution of the PUCCH and SRS transmission in the first symbol set and a preset priority order of the PUCCH and SRS transmission. Generally, the priority of sending PUCCH is higher than that of sending SRS, and the terminal preferentially selects the symbol of sending SRS as a guard interval.

In some embodiments, uplink transmission conditions of the last N symbols at the end of the first time unit and the first N symbols at the end of the second time unit in the first symbol set are different, and the terminal uses the N symbols for transmitting the SRS as the guard interval. In this implementation, the priority of transmitting PUCCH is higher than that of transmitting SRS, and here, regardless of the type or transmission mode of SRS, the determined guard interval has the least influence on the terminal to transmit PUCCH, and transmission of PUCCH with high priority is ensured. Fig. 15 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 15, the number N of guard interval symbols is 1, and in this example, the guard interval is a symbol selected from the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit to transmit the SRS. The number N of guard intervals is 2, and the selection principle is similar, which is not described herein again.

In a third case, if the first symbol set includes symbols for transmitting the SRS and symbols for not transmitting the channel, the guard interval is obtained by selecting consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the symbols on both sides of the guard interval belong to symbols of different time units. The consecutive N symbols may include only symbols of the same type or may include symbols of different types. If different types of symbols are included, the number of symbols of the non-transmission channel in the continuous N symbols is larger than or equal to the number of symbols of the transmission SRS.

In the above situation, the terminal selects, as the guard interval, a symbol with a lower priority of a transmission type from the first symbol set according to a symbol distribution of the transmission SRS and the non-transmission channel in the first symbol set and a preset priority order of the transmission SRS and the non-transmission channel. The priority of sending SRS is higher than that of not sending channels, and the terminal preferentially selects the symbol of not sending channel as the guard interval.

In some embodiments, uplink transmission conditions of the last N symbols at the end of the first time unit and the first N symbols at the end of the second time unit in the first symbol set are different, and then the terminal does not transmit N symbols of the channel as the guard interval. In the implementation mode, the priority of sending the SRS is higher than that of not sending the channel, the influence of the determined guard interval on the sending of the SRS by the terminal is minimum, and the transmission of the SRS with high priority is ensured.

In a fourth case, if the first symbol set includes symbols for transmitting PUSCH and symbols for not transmitting channel, the guard interval is to select consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the symbols on both sides of the guard interval belong to symbols of different time units. The consecutive N symbols may include only symbols of the same type or may include symbols of different types. If the symbols of different types are included, the number of symbols of the non-transmission channel in the continuous N symbols is larger than or equal to the number of symbols for transmitting the PUSCH.

In the above situation, the terminal selects, as the guard interval, a symbol with a lower priority of a transmission type from the first symbol set according to a symbol distribution situation of a transmission PUSCH and a non-transmission channel in the first symbol set and a preset priority order of the transmission PUSCH and the non-transmission channel. The priority of sending PUSCH is higher than that of not sending channel, and the terminal selects the symbol of not sending channel as the guard interval.

In some embodiments, uplink transmission conditions of the last N symbols at the end of the first time unit and the first N symbols at the end of the second time unit in the first symbol set are different, and the terminal does not transmit N symbols of the channel as the guard interval. In the implementation mode, the priority of sending the PUSCH is higher than that of a channel not to be sent, the influence of the determined guard interval on the PUSCH sent by the terminal is minimum, and the transmission of the PUSCH with high priority is ensured.

In a fifth case, if the first symbol set includes symbols for transmitting PUCCH and symbols for not transmitting a channel, the guard interval is obtained by selecting consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the symbols on both sides of the guard interval belong to symbols of different time units. The consecutive N symbols may include only symbols of the same type or may include symbols of different types. If different types of symbols are included, the number of symbols of the non-transmission channel among the consecutive N symbols is greater than or equal to the number of symbols of the transmission PUCCH.

In the above case, the terminal selects, as the guard interval, a symbol of a lower priority of a transmission type from the first symbol set according to a symbol distribution of the transmission PUCCH and the non-transmission channel in the first symbol set and a preset priority order of the transmission PUCCH and the non-transmission channel. Generally, the priority of transmitting the PUCCH is higher than that of a non-transmission channel, and a terminal preferentially selects a symbol of the non-transmission channel as a guard interval.

In some embodiments, uplink transmission conditions of the last N symbols at the end of the first time unit and the first N symbols at the end of the second time unit in the first symbol set are different, and the terminal does not transmit N symbols of the channel as the guard interval. In the implementation mode, the priority of sending the PUCCH is higher than that of a channel not to be sent, the influence of the determined guard interval on the PUCCH sent by the terminal is minimum, and the transmission of the PUCCH with high priority is ensured.

Fig. 16 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 16, the number N of guard interval symbols is 1, and in this example, the guard interval is a symbol of a channel not to be transmitted, which is selected from the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit. The number N of guard intervals is 2, and the selection principle is similar, which is not described herein again.

In the sixth case, if the first symbol set includes symbols for transmitting PUSCH and symbols for transmitting PUCCH, the guard interval is obtained by selecting consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the symbols on both sides of the guard interval belong to symbols of different time units. The consecutive N symbols may include only symbols of the same type or may include symbols of different types. And if the symbols of different types are included, the number of symbols for transmitting the PUSCH in the continuous N symbols is larger than or equal to the number of symbols for transmitting the PUCCH.

In the above situation, the terminal selects, as the guard interval, a symbol with a lower priority of the transmission type from the first symbol set according to the symbol distribution of the PUCCH and the PUSCH in the first symbol set and the preset priority order of the PUCCH and the PUSCH. Generally, the priority of sending PUCCH is higher than that of sending PUSCH, and the terminal preferentially selects symbols for sending PUSCH as a guard interval.

In some embodiments, uplink transmission conditions of the last N symbols at the end of the first time unit and the first N symbols at the end of the second time unit in the first symbol set are different, and the terminal uses N symbols for transmitting the PUSCH as a guard interval. In the implementation mode, the priority of sending the PUCCH is higher than that of sending the PUSCH, the determined guard interval has the minimum influence on the terminal to send the PUCCH, and the transmission of the PUCCH with the high priority is ensured.

Optionally, if the PUSCH carries the UCI, the PUCCH and the PUSCH may have the same priority.

Fig. 17 is a schematic diagram of symbol distribution at a time cell boundary according to an embodiment of the present disclosure. In fig. 17, the number N of guard interval symbols is 2, and in this example, the guard interval is 2 consecutive symbols selected from the last 2 symbols at the end of the first time unit and the first 2 symbols at the beginning of the second time unit. As in fig. 17 (a), the last 2 symbols of the first time unit transmit a PUSCH not carrying UCI, the first 2 symbols of the second time unit transmit a PUCCH, and the guard interval is the last 2 symbols of the first time unit. As shown in fig. 17 (b), the last 2 symbols of the first time unit transmit the PUSCH carrying UCI, the first 2 symbols of the second time unit transmit the PUCCH, the priorities of the PUSCH carrying UCI and the PUCCH are the same, and the guard interval may be the last 2 symbols of the first time unit, or the first 2 symbols of the second time unit, or the last symbol of the first time unit and the first symbol of the second time unit. The number N of guard intervals is 1, and the selection principle is similar, which is not described herein again.

It should be noted that, in the case where the first symbol set includes two types of symbols, there are: in the case that the last N symbols of the first time unit and the first N symbols of the second time unit are distributed irregularly, the general principle of selecting consecutive N symbols as the guard interval is to include as many symbols of the non-transmission channel as possible.

In the following, with reference to fig. 18 to fig. 22, examples are selected for the guard intervals in the first symbol set, where the symbols for transmitting PUSCH, PUCCH, or SRS are included, and the symbols for not transmitting the channel are included. The following examples are not exhaustive of all symbol distributions, and for the symbol distributions not shown, the terminal determines the guard interval based on the above general principle.

In some embodiments, the number N of the symbols of the guard interval is 2, and if three consecutive symbols, which are the symbols for the terminal not to transmit the channel, are the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit, the terminal selects two consecutive symbols from the three consecutive symbols as the guard interval, as shown in fig. 18.

In some embodiments, the number N of the symbols of the guard interval is 2, and if two consecutive symbols are symbols of the channel not transmitted by the terminal, in the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit, the terminal takes the two consecutive symbols of the channel not transmitted as the guard interval, as shown in fig. 19.

In some embodiments, the number N of symbols of the guard interval is 2, and if only one of the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit is a symbol of the non-transmission channel, the symbol of the non-transmission channel is used as a symbol of the guard interval, and the other symbol of the guard interval is determined from symbols adjacent to the symbol of the non-transmission channel. The guard interval may be a symbol in which a channel is not transmitted and a symbol to the left of the symbol, as shown in (a) of fig. 20, or a symbol in which a channel is not transmitted and a symbol to the right of the symbol, as shown in (b) of fig. 20. The types of information transmitted by two adjacent symbols of the symbol that does not transmit the channel (for example, the type of PUSCH transmitted information, the type of SRS, and/or the transmission mode) may be the same or different, and the selection principle that the types of symbol transmission are the same or different may be referred to in the above embodiments, and will not be described herein again.

In some embodiments, the number N of the symbols of the guard interval is 2, and if the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit include a symbol for transmitting a PUSCH, a PUCCH, or a SRS, a symbol for not transmitting a channel, and the priority of not transmitting a channel is the lowest, at least one symbol in the determined guard interval is a symbol for not transmitting a channel. As shown in fig. 21 (a), two consecutive symbols of the non-transmission channel are used as guard intervals. As shown in fig. 21 (b), the two symbols of the non-transmission channel are not consecutive, and the guard interval may be the last two symbols at the end of the first time unit or the first two symbols at the beginning of the second time unit. Specifically, the terminal may determine the guard interval according to a last symbol at the end of the first time unit and a type of transmission information (e.g., a type of PUSCH transmission information, a type of SRS, and/or a transmission manner) of the first symbol at the beginning of the second time unit.

In some embodiments, the number N of the symbols of the guard interval is 3, and if the last three symbols at the end of the first time unit and the first three symbols at the beginning of the second time unit include a symbol for transmitting a PUSCH, a PUCCH, or a SRS, a symbol for not transmitting a channel, and the priority of not transmitting a channel is the lowest, at least one symbol in the determined guard interval is a symbol for not transmitting a channel. As shown in fig. 22 (a), two consecutive symbols of the non-transmission channel are used as two symbols of the guard interval, and the other symbol of the guard interval is the first symbol at the beginning of the second time unit. As shown in fig. 22 (b), if the symbols of the non-transmission channel are not consecutive (e.g. occur at intervals), three consecutive symbols are selected from the last three symbols at the end of the first time unit and the first three symbols at the beginning of the second time unit, and there are two symbols of the three consecutive symbols that do not transmit the channel that occur at intervals, for example, the last three symbols at the end of the first time unit in fig. 22 (b), or the last symbol at the end of the first time unit and the first two symbols at the beginning of the second time unit. Specifically, the terminal may determine the guard interval according to a last-but-one symbol at the end of the first time unit and a type of information transmitted in the first symbol at the beginning of the second time unit (for example, a type of PUSCH transmission information, a type of SRS, and/or a transmission manner).

The above several embodiments show that the first symbol set includes symbols for not transmitting a channel, and in the following, with reference to fig. 23 to fig. 25, examples are selected for the guard interval of any two symbols in the first symbol set including symbols for transmitting a PUSCH, a PUCCH, and an SRS.

In some embodiments, the number N of the symbols of the guard interval is 2, and if the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit include a symbol for transmitting PUSCH and a symbol for transmitting PUCCH, the priority of the predetermined PUCCH is higher than that of the PUSCH, as shown in (a) of fig. 23, the symbol for transmitting PUSCH is taken as one symbol of the guard interval, and the other symbol of the guard interval may be a right-side symbol or a left-side symbol adjacent to the symbol for transmitting PUSCH.

In some embodiments, the number N of the symbols of the guard interval is 3, and if there are three consecutive symbols for transmitting the PUSCH in the last three symbols at the end of the first time unit and the first three symbols at the beginning of the second time unit, the terminal takes the three consecutive symbols for transmitting the PUSCH as the guard interval, as shown in (b) of fig. 23.

In some embodiments, the number N of the guard interval symbols is 2, if the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit include a symbol for transmitting a PUSCH for carrying UCI and a symbol for transmitting an SRS, the priority of the PUSCH for carrying UCI is preset to be higher than that of the SRS, as shown in fig. 24 (a), the first 2 symbols at the beginning of the second time unit are all used for transmitting the SRS, and the terminal uses these 2 symbols as the guard interval.

In some embodiments, the number N of the guard interval symbols is 2, if the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit include a symbol for transmitting a PUSCH not carrying UCI, a symbol for transmitting a sounding SRS, and a symbol for transmitting a positioning SRS, the priority of the sounding SRS is higher than that of the PUSCH not carrying UCI, and the priority of the PUSCH not carrying UCI is higher than that of the positioning SRS, as shown in (b) of fig. 24, the last 2 symbols at the end of the first time unit are respectively used for transmitting the PUSCH not carrying UCI and the positioning SRS, and the terminal takes these 2 symbols as a guard interval.

In some embodiments, the number N of the guard interval symbols is 2, if the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit include a symbol for transmitting a PUSCH not carrying UCI, a symbol for transmitting a periodic SRS and a symbol for transmitting an aperiodic SRS, the priority of the aperiodic SRS is preset to be higher than that of the PUSCH not carrying UCI, and the priority of the PUSCH not carrying UCI is preset to be higher than that of the periodic SRS, as shown in (c) of fig. 24, the first 2 symbols at the beginning of the second time unit are all used for transmitting the periodic SRS, and the terminal uses these 2 symbols as a guard interval.

In some embodiments, the number N of guard interval symbols is 2, if the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit include a symbol for transmitting a PUCCH and a symbol for transmitting an SRS, the priority of the PUCCH is higher than that of the SRS, as shown in fig. 25 (a), the first 2 symbols at the beginning of the second time unit are all used for transmitting the SRS, and the terminal uses these 2 symbols as the guard interval. As shown in fig. 25 (b), the last 2 symbols at the end of the first time unit and the first 2 symbols at the beginning of the second time unit alternately transmit the PUCCH and the SRS, and the terminal may use the last 2 symbols at the end of the first time unit as a guard interval, or use the last 1 symbol at the end of the first time unit and the 1 st symbol at the beginning of the second time unit as a guard interval, or use the first 2 symbols at the beginning of the second time unit as a guard interval.

The following describes a case where three types of symbols are included in the first symbol set. Fig. 26 to 29 relate to the drawings.

In the first case, if the first symbol set includes a symbol for transmitting an SRS, a symbol for transmitting a PUCCH, and a symbol for not transmitting a channel, the guard interval is to select consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, the number of symbols for not transmitting a channel in the consecutive N symbols is greater than or equal to the number of symbols for transmitting an SRS, and the number of symbols for transmitting an SRS is greater than or equal to the number of symbols for transmitting a PUCCH.

In the above situation, the terminal selects a symbol with a lower priority of a transmission type from the first symbol set as a guard interval according to the symbol distribution of the transmission PUCCH, the SRS and the non-transmission channel in the first symbol set and the preset priority order of the transmission PUCCH, the SRS and the non-transmission channel. Generally, the priority for sending the SRS is higher than that for sending the PUCCH, the priority for sending the PUCCH is higher than that for not sending the channel, and the terminal preferentially selects a symbol of the not sending channel as a guard interval, then selects a symbol for sending the PUCCH, and finally selects a symbol for sending the SRS.

In some embodiments, if the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit include symbols for transmitting SRS, PUCCH and no-transmission channel, the PUCCH is higher in priority than the SRS, and the SRS is higher in priority than the no-transmission channel. As shown in fig. 26 (a), the number N of guard interval symbols is 2, and since the last 2 symbols at the end of the first time unit are used for transmitting the SRS and not transmitting the channel, the terminal uses the last 2 symbols as the guard interval.

In some embodiments, if the last three symbols at the end of the first time unit and the first three symbols at the beginning of the second time unit include symbols for transmitting the SRS, the PUCCH and the non-transmission channel, as shown in fig. 26 (b), the number N of guard interval symbols is 3, the terminal uses the last 2 symbols of the non-transmission channel at the end of the first time unit as the guard interval, and since the priority of the PUCCH is higher than that of the SRS, the terminal uses the last 3 symbols at the end of the first time unit as another symbol of the guard interval.

In the second case, if the first symbol set includes a symbol for transmitting SRS, a symbol for transmitting PUSCH, and a symbol for not transmitting a channel, the guard interval is selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and of the N consecutive symbols: the number of symbols for which the channel is not transmitted is greater than or equal to the number of symbols for which the SRS is transmitted, and the number of symbols for which the SRS is transmitted is greater than or equal to the number of symbols for which the PUSCH is transmitted; or the number of symbols for not transmitting the channel is larger than or equal to the number of symbols for transmitting the PUSCH, and the number of symbols for transmitting the PUSCH is larger than or equal to the number of symbols for transmitting the SRS.

In the above situation, the terminal selects, as the guard interval, a symbol with a lower priority of the transmission type from the first symbol set according to the symbol distribution of the channels for transmitting PUSCH, SRS and no-transmission in the first symbol set and the preset priority order of the channels for transmitting PUSCH, SRS and no-transmission. Usually, the priority of the non-transmission channel is the lowest, the terminal preferentially selects the symbol of the non-transmission channel as the guard interval, and then the terminal can further transmit the symbol with lower priority of the type as the guard interval according to the preset priority sequence of transmitting the PUSCH and transmitting the SRS. The network side can also set a more detailed priority order based on at least one of the SRS type, the sending mode and the PUSCH bearing information type, and the terminal selects a symbol with lower priority as a guard interval based on the set priority order.

In some embodiments, if the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit include symbols for transmitting SRS, PUSCH for carrying UCI, and no-transmission channel, the PUSCH for carrying UCI is assumed to have higher priority than the SRS, and the SRS has higher priority than the no-transmission channel. As shown in fig. 26 (a), the number N of guard interval symbols is 2, and since the last 2 symbols at the end of the first time unit are used for transmitting the SRS and not transmitting the channel, the terminal uses the last 2 symbols as the guard interval.

In some embodiments, if the last three symbols at the end of the first time unit and the first three symbols at the beginning of the second time unit include symbols for transmitting SRS, PUSCH for carrying UCI, and no-transmission channel, as shown in (b) of fig. 26, the number N of symbols of the guard interval is 3, the terminal takes the last 2 symbols of no-transmission channel at the end of the first time unit as the guard interval, and since the PUSCH for carrying UCI has higher priority than the SRS, the terminal takes the last 3 th symbol at the end of the first time unit as another symbol of the guard interval.

In some embodiments, if the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit include symbols for transmitting the sounding SRS (or the aperiodic SRS), the PUSCH not carrying the UCI, and the PUSCH not carrying the UCI, the priority of the sounding SRS (or the aperiodic SRS) is preset to be higher than that of the PUSCH not carrying the UCI, and the priority of the PUSCH not carrying the UCI is higher than that of the PUSCH not carrying the UCI, as shown in (a) of fig. 27, the number N of guard interval symbols is 2, since the last 1 symbol at the end of the first time unit does not transmit a channel, the 1 st symbol at the beginning of the second time unit is used for transmitting the PUSCH not carrying the UCI, and the terminal uses these 2 symbols as the guard interval.

In some embodiments, if the last three symbols at the end of the first time unit and the first three symbols at the beginning of the second time unit include symbols for transmitting the sounding SRS (or the aperiodic SRS), the PUSCH for not carrying the UCI, and the channel, as shown in (b) of fig. 27, the number N of the symbols of the guard interval is 3, the terminal uses the symbols of the last 2 channels not carrying the UCI at the end of the first time unit as the guard interval, and since the sounding SRS (or the aperiodic SRS) has higher priority than the PUSCH for not carrying the UCI, the terminal uses the 1 st symbol at the beginning of the second time unit as another symbol of the guard interval.

In a third case, if the first symbol set includes a symbol for transmitting SRS, a symbol for transmitting PUSCH, and a symbol for transmitting PUCCH; the guard interval is a sequence of N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, where: the number of symbols for sending the SRS is greater than or equal to the number of symbols for sending the PUSCH, and the number of symbols for sending the PUSCH is greater than or equal to the number of symbols for sending the PUCCH; or, the number of symbols for transmitting the PUSCH is greater than or equal to the number of symbols for transmitting the SRS, and the number of symbols for transmitting the SRS is greater than or equal to the number of symbols for transmitting the PUCCH.

In the above situation, the terminal selects, as the guard interval, a symbol with a lower priority of a transmission type from the first symbol set according to the symbol distribution of the SRS, the PUSCH, and the PUCCH transmitted in the first symbol set and the preset priority order of the SRS, the PUSCH, and the PUCCH transmitted. Generally, the priority for sending the PUCCH is the highest, and the terminal may preferentially select a symbol with a lower priority of a sending type as a guard interval according to a preset priority order for sending the SRS and the PUSCH. If the priority of sending the PUSCH is higher than that of sending the SRS, the terminal preferentially selects a symbol for sending the PUSCH as a guard interval, and if the priority of sending the SRS is higher than that of sending the PUSCH, the terminal preferentially selects the symbol for sending the SRS as the guard interval. The network side can also set a more detailed priority order based on at least one of the SRS type, the sending mode and the PUSCH bearing information type, and the terminal selects a symbol with lower priority as a guard interval based on the set priority order.

In some embodiments, if the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit include symbols for transmitting SRS, PUSCH not carrying UCI, and PUCCH, it is preset that the priority of PUCCH is higher than PUSCH not carrying UCI, and the priority of PUCCH is higher than SRS, as shown in (a) of fig. 28, the number N of guard interval symbols is 2, the terminal first selects, from the last 1 symbol at the end of the first time unit and the 1 st symbol at the beginning of the second time unit, a symbol for transmitting PUSCH not carrying UCI, that is, the last 1 symbol at the end of the first time unit, and then selects, according to the priority order of the two symbols adjacent to the symbol, a symbol for transmitting SRS to the left of the symbol as another symbol of the guard interval.

In some embodiments, the last three symbols at the end of the first time unit and the first three symbols at the beginning of the second time unit include symbols for transmitting SRS, PUSCH not carrying UCI, and PUCCH, as shown in (b) of fig. 28, the number N of guard interval symbols is 3, the terminal uses the last 2 symbols at the end of the first time unit for transmitting PUSCH not carrying UCI as a guard interval, and since the priority of PUCCH is higher than that of SRS, the terminal uses the last 3 symbols at the end of the first time unit as another symbol of the guard interval.

In a fourth case, if the first symbol set includes symbols for transmitting PUSCH, symbols for transmitting PUCCH, and symbols for not transmitting a channel, the guard interval is to select consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, the number of symbols for not transmitting a channel in the consecutive N symbols is greater than or equal to the number of symbols for transmitting PUSCH, and the number of symbols for transmitting PUSCH is greater than or equal to the number of symbols for transmitting PUCCH.

In the above case, the terminal selects, as the guard interval, a symbol with a lower priority of the transmission type from the first symbol set according to the symbol distribution of the transmission PUSCH, PUCCH and non-transmission channels in the first symbol set and the preset priority order of the transmission PUSCH, PUCCH and non-transmission channels. Generally, the priority of sending PUCCH is higher than that of sending PUSCH, the priority of sending PUSCH is higher than that of not sending channel, the terminal preferentially selects the symbol of not sending channel as the guard interval, then selects the symbol of sending PUSCH, and finally selects the symbol of sending PUCCH. The terminal may also set a more detailed priority order based on the type of the PUSCH carrying information (for example, the priority of the PUSCH carrying UCI is the same as that of the PUCCH, and the priority of the PUCCH is higher than that of the PUSCH not carrying UCI), and the terminal selects a symbol with a lower priority as the guard interval based on the set priority order.

In some embodiments, if the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit include symbols for transmitting PUSCH and PUCCH and symbols for not transmitting a channel, it is preset that the priority of PUCCH is higher than PUSCH and the priority of PUSCH is higher than that of not transmitting a channel, as shown in (a) of fig. 29, the number N of symbols for guard interval is 2, and the terminal first selects, from the last 1 symbol at the end of the first time unit and the 1 st symbol at the beginning of the second time unit, a symbol for not transmitting a channel with a low priority, that is, the last 1 symbol at the end of the first time unit, and then selects a symbol for transmitting PUSCH on the left side of the symbol as another symbol for guard interval according to the priority order of two symbols adjacent to the symbol.

In some embodiments, if the last three symbols at the end of the first time unit and the first three symbols at the beginning of the second time unit include symbols for transmitting PUSCH and PUCCH and symbols for not transmitting a channel, as shown in fig. 29 (b), the number N of guard interval symbols is 3, the terminal uses the last 2 symbols of the not-transmitting channel at the end of the first time unit as a guard interval, and since the PUCCH has higher priority than the PUSCH, the terminal uses the last 3 symbols at the end of the first time unit as another symbol of the guard interval.

Finally, the case where the first symbol set includes four types of symbols is described, that is, the first symbol set includes symbols for transmitting SRS, symbols for transmitting PUSCH, symbols for transmitting PUCCH, and symbols for not transmitting a channel. The guard interval is to select consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein, of the consecutive N symbols:

the number of symbols of the non-transmission channel is greater than or equal to the number of symbols of the PUSCH, the number of symbols of the PUSCH is greater than or equal to the number of symbols of the SRS, and the number of symbols of the SRS is greater than or equal to the number of symbols of the PUCCH; or alternatively

The number of symbols for which the channel is not transmitted is greater than or equal to the number of symbols for which the SRS is transmitted, the number of symbols for which the SRS is transmitted is greater than or equal to the number of symbols for which the PUSCH is transmitted, and the number of symbols for which the PUSCH is transmitted is greater than or equal to the number of symbols for which the PUCCH is transmitted.

In the above situation, the terminal selects, as the guard interval, a symbol with a lower priority of the transmission type from the first symbol set according to the symbol distribution of the transmission SRS, the PUSCH, the PUCCH and the non-transmission channel in the first symbol set and the preset priority order of the transmission SRS, the PUSCH, the PUCCH and the non-transmission channel. The priority of a channel which is not sent is the lowest, the priority of a channel which is not sent is the highest, the terminal preferentially selects the symbol of the channel which is not sent as a guard interval, then the terminal can select the symbol with lower priority of the sending type as the guard interval according to the preset priority sequence of sending the SRS and the PUSCH, and finally the symbol of the PUCCH is selected and sent. The network side can also set a more detailed priority order based on at least one of the SRS type, the sending mode and the PUSCH bearing information type, and the terminal selects a symbol with lower priority as a guard interval based on the set priority order.

The above-mentioned number of symbols for transmitting PUSCH is greater than or equal to the number of symbols for transmitting SRS: the number of symbols for transmitting PUSCH is greater than or equal to the number of symbols for transmitting positioning SRS (or periodic/semi-persistent SRS), or the number of symbols for transmitting PUSCH carrying UCI is greater than or equal to the number of symbols for transmitting sounding SRS (or aperiodic SRS). The above-mentioned number of symbols for transmitting SRS is greater than or equal to the number of symbols for transmitting PUSCH: the number of symbols to transmit the sounding SRS (or the aperiodic SRS) is greater than or equal to the number of symbols to transmit the PUSCH not carrying UCI.

In some embodiments, if the first symbol set includes the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit, respectively transmitting the SRS, the PUSCH, the PUCCH, and the non-transmission channel, as shown in (a) of fig. 30, the number of symbols of the guard interval is 2, and the terminal first selects, from the last 1 symbols at the end of the first time unit and the 1 st symbol at the beginning of the second time unit, the symbol of the non-transmission channel with a low priority, that is, the 1 st symbol at the beginning of the second time unit, and then selects the symbol of the PUSCH transmitted on the right side of the symbol as another symbol of the guard interval according to the priority order of the two symbols adjacent to the symbol.

In some embodiments, if the first symbol set includes the last three symbols at the end of the first time unit and the first three symbols at the beginning of the second time unit, the set includes symbols for transmitting SRS, PUSCH, PUCCH and no-transmission channel, the symbol distribution is as shown in (b) of fig. 30, the number of symbols of the guard interval is 3, since two symbols of the no-transmission channel include 2 symbols for transmitting PUSCH, the terminal needs to combine the channel transmission conditions of adjacent symbols of the two symbols for no-transmission channel, select the guard interval, in (b) of fig. 30, the adjacent symbols of the left-side no-transmission channel symbol are used for transmitting SRS and PUSCH respectively, and the adjacent symbols of the right-side no-transmission channel symbol are used for transmitting PUCCH and PUSCH respectively, where the priority of PUCCH is higher than that of SRS, and therefore, the terminal takes the last 3 symbols at the end of the first time unit as the guard interval.

It should be noted that, except that the priority of the PUCCH is preset to be higher than the PUSCH, the priority of the PUSCH may also be preset to be higher than the PUCCH, and the priority of the PUSCH carrying the UCI may also be preset to be the same as the priority of the PUCCH, which is not limited in this embodiment of the present application.

In summary, in the above embodiments, based on the uplink channel transmission condition of the symbols at the boundary of two time units, the symbol without the transmission channel is preferentially selected as the guard interval, if there is no symbol without the transmission channel at the boundary, the symbol with the SRS or the PUSCH is preferentially selected as the guard interval (the priority order of the SRS and the PUSCH includes multiple conditions, see above), and finally the symbol with the PUCCH is selected, so that the influence of the selected guard interval on the transmission of at least one of the PUSCH, the PUCCH, and the SRS is ensured to be minimum, and the transmission capability of the uplink channel of the system is improved.

Fig. 31 is a flowchart of a method for determining a guard interval according to an embodiment of the present application. As shown in fig. 31, the method provided in this embodiment can be applied to the base station shown in fig. 1, and the method includes the following steps:

step 201, according to the uplink channel receiving condition of the symbols in the first symbol set, determining that N symbols in the first symbol set are guard intervals.

In the embodiment of the present application, the symbols in the first symbol set belong to symbols at the end of a first time unit and at the beginning of a second time unit, the first time unit and the second time unit are two time units consecutive in the time domain, the first time unit is before, and the second time unit is after. The frequency domain sub-bands corresponding to the first time unit and the second time unit are different, the number of symbols in the first symbol set is greater than N, and N is a positive integer.

The symbols in the first symbol set in the embodiments of the present application may be understood as symbols at the boundary of the first time unit and the second time unit. As an example, assuming that the number N of symbols of the guard interval is 1, the ue may select one symbol from two symbols at the boundary between the first time unit and the second time unit, wherein the two symbols at the boundary may be the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit. As another example, assuming that the number of symbols of the guard interval is 2, the UE may select four symbols at the boundary between the first time unit and the second time unit, where the four symbols at the boundary may be the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit.

In this embodiment, the uplink channel reception condition of the symbols in the first symbol set includes: at least one of receiving a PUSCH, receiving a PUCCH, receiving an SRS, or not receiving a channel. I.e. any one of the first set of symbols may be used for receiving PUSCH, receiving PUCCH, receiving SRS or not receiving the channel.

The N symbols of the guard interval determined in the embodiment of the present application are consecutive symbols, and the symbols on both sides of the guard interval belong to different time units. As can be seen from fig. 3, the guard interval is located at the intersection of the first time unit and the second time unit, the symbol on the left side of the guard interval belongs to the symbol of the first time unit, and the symbol on the right side of the guard interval belongs to the symbol of the second time unit.

And the network equipment determines N symbols in the first symbol set as guard intervals according to the uplink channel receiving condition of the symbols in the first symbol set. The guard interval of N symbols includes the following cases: (1) the last N symbols at the end of the first time unit; (2) the first N symbols at the beginning of the second time unit; (3) Consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.

As an example, when N is 1, the guard interval may be the last symbol at the end of the first time unit, or the first symbol at the beginning of the second time unit.

As an example, when N takes a value of 2, the guard interval may be the last two symbols at the end of the first time unit, or the first two symbols at the beginning of the second time unit, or the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit.

As an example, when N takes a value of 3, the guard interval may be the last three symbols at the end of the first time unit, or the first three symbols at the beginning of the second time unit, or consecutive 3 symbols selected from the last 2 symbols at the end of the first time unit and the first 2 symbols at the beginning of the second time unit.

The above examples show several possible cases of the guard intervals corresponding to different N values, and for several possible cases of any one guard interval corresponding to an N value, it is necessary to perform comprehensive analysis in combination with the uplink channel reception condition of each symbol at the time unit boundary to determine the final guard interval. In the comprehensive analysis, the type of the uplink channel of the symbol at the boundary, the type of information carried by the uplink channel, the type of the SRS, or the transmission mode of the SRS may be considered, so that the finally selected symbol as the guard interval has the smallest influence on the uplink channel reception performance of the network device. In the NR system, since the channel resource configurations of different time units are very flexible, the uplink channel reception situation of the symbol at the boundary of two consecutive time units is more, and the factors considered by comprehensive analysis are different, and the detailed situations can be referred to in the following embodiments.

Step 202, performing frequency subband retuning in the determined guard interval.

The frequency subband retuning in the embodiment of the present application refers to adjusting the bandwidth of a receiver from the bandwidth of a first time unit to the bandwidth of a second time unit by a base station. During the frequency subband retuning, the base station may not receive, not transmit, the channel.

The method for determining the guard interval provided in the embodiment of the present application determines N symbols as the guard interval by comprehensively analyzing the uplink channel receiving conditions of a plurality of symbols at the junction of two consecutive time units, where N is a positive integer. The N symbols of the determined guard interval are consecutive symbols, and the symbols at both sides of the guard interval belong to symbols of different time units. The base station may not receive the channel at the determined guard interval, or perform frequency subband retuning, or perform rate matching on symbols belonging to the guard interval among symbols of the received channel. The influence of the guard interval determined by the method on the receiving performance of the uplink channel of the base station is minimum, and the transmission performance of the uplink channel of the system is improved.

The above embodiments show that the network device needs to perform comprehensive analysis according to the uplink channel receiving conditions of multiple symbols at the boundary of two consecutive time units to determine the guard interval. Wherein, the uplink channel receiving condition of the symbol at the boundary of two continuous time units comprises at least one of receiving PUSCH, receiving PUCCH, receiving SRS or not receiving channel. Specifically, the network device may ensure the guard interval according to the uplink channel reception condition of the symbols at the boundary between two consecutive time units (i.e., the symbol distribution condition of each uplink channel reception type in the first symbol set) and the priority order of the channel reception types, and use the symbol with the lower priority of the channel reception type as the guard interval.

Taking 1 as an example of the number of symbols of the guard interval, if the channel reception types of the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit are the same, the network device may select the last symbol at the end of the first time unit or the first symbol at the beginning of the second time unit as the guard interval. If the channel receiving types of the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit are different, the network equipment selects a symbol with lower priority as a guard interval according to the priority sequence of the channel receiving types of the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit.

Taking 2 as an example of the number of the symbols of the guard interval, the network device selects two continuous symbols from the last two symbols at the end of the first time unit and the first two symbols at the beginning of the second time unit as the guard interval. Firstly, a symbol with lower priority is selected from the last symbol at the end of the first time unit and the first symbol at the beginning of the second time unit as a guard interval, and then a symbol with lower priority is selected from two adjacent symbols of the selected symbol as another symbol of the guard interval.

It should be noted that, for the symbols receiving the PUSCH, the symbols receiving the PUSCH may be further subdivided into the symbols carrying the PUSCH of UCI and the symbols not carrying the PUSCH of UCI according to the type of the PUSCH carrying information. The network side can set the priority order of the symbols of the PUSCH carrying different information types. For the symbol of the received SRS, the symbol of the received SRS may be further subdivided into a symbol of the received SRS for positioning and a symbol of the received SRS for sounding according to the SRS type, and the symbol of the received SRS may be further subdivided into a symbol of the received periodic SRS, a symbol of the received aperiodic SRS and a symbol of the received semi-persistent SRS according to the SRS receiving mode. The network side may set the priority order of the symbols carrying different SRS types, and/or set the priority order of the symbols carrying SRS of different transmission manners.

In the embodiment of the present application, the priority order of the channel reception types of the symbols includes the following setting modes:

(1) Reception PUCCH > reception PUSCH > reception SRS > reception no-reception channel. The setting mode does not consider the type of the PUSCH bearing information, the type of the SRS and the receiving mode, the network equipment preferentially selects the symbol of the non-receiving channel at the junction of two time units as a guard interval, if the symbol of the non-receiving channel does not exist at the junction, the symbol of the receiving SRS is preferentially selected as the guard interval, then the symbol of the receiving PUSCH is selected, and finally the symbol of the receiving PUCCH is selected.

(2) Receiving PUCCH > receiving SRS > receiving PUSCH > not receiving a channel. The setting mode does not consider the type of the PUSCH bearing information, the type of the SRS and the receiving mode, the network equipment preferentially selects the symbol of the non-receiving channel at the junction of two time units as a guard interval, if the symbol of the non-receiving channel does not exist at the junction, the symbol of the receiving PUSCH is preferentially selected as the guard interval, then the symbol of the receiving SRS is selected, and finally the symbol of the receiving PUCCH is received.

(3) Receiving PUCCH = receiving PUSCH carrying UCI > receiving PUSCH not carrying UCI > receiving SRS > not receiving channel. The setting mode considers the type of PUSCH bearing information, the priority of the PUSCH bearing UCI is the same as that of the PUCCH, if no symbol of a channel is not received at the junction of two time units, the symbol of the SRS is preferentially selected to be used as a guard interval, the symbol of the PUSCH not bearing UCI is then selected to be used as a guard interval, and finally the symbol of the PUCCH or the symbol of the PUSCH bearing UCI is received.

(4) Receiving PUCCH > receiving sounding SRS > receiving PUSCH > receiving positioning SRS > not receiving a channel. The setting mode takes the SRS type into consideration, if the boundary of two time units does not receive the symbol of a channel, the network equipment preferentially selects the symbol for receiving and positioning the SRS as a guard interval, if the boundary does not receive the symbol for positioning the SRS, the network equipment preferentially selects the symbol for receiving the PUSCH as the guard interval, then selects the symbol for receiving the sounding SRS, and finally receives the symbol of the PUCCH.

(5) Receive PUCCH = receive PUSCH carrying UCI > receive sounding SRS > receive PUSCH not carrying UCI > receive positioning SRS > not receive channel. In this setting, the PUSCH is further subdivided based on the fourth setting.

(5) Receiving PUCCH > receiving aperiodic SRS > receiving PUSCH > receiving periodic/semi-persistent SRS > not receiving a channel. The setting mode takes the receiving type of the SRS into consideration, if the symbol of the channel is not received at the junction of two time units, the network equipment preferentially selects the symbol of the receiving periodic/semi-continuous SRS as the guard interval, if the symbol of the receiving periodic/semi-continuous SRS is not received at the junction, the symbol of the receiving PUSCH is preferentially selected as the guard interval, then the symbol of the receiving non-periodic SRS is selected, and finally the symbol of the receiving PUCCH is selected.

(6) Receive PUCCH = receive PUSCH carrying UCI > receive aperiodic SRS > receive PUSCH not carrying UCI > receive periodic/semi-persistent SRS > not receive channel. In the setting mode, the PUSCH is further subdivided on the basis of the fifth setting mode.

The setting of the priority order of the channel reception types of the symbols is only an example, and in practical applications, the setting may be performed according to practical requirements, and the embodiment of the present application is not limited in any way.

In summary, the network device preferentially selects a symbol with a lower priority of a channel reception type from the first symbol set as a guard interval according to an uplink channel reception condition of the symbol in the first symbol set and a preset priority order of the channel reception type of the symbol. The selected guard interval is continuous N symbols, the symbols on the left side and the right side of the guard interval belong to different time units, and the continuous N symbols can be symbols of the same channel receiving type or symbols of multiple channel receiving types. If the continuous N symbols comprise symbols of multiple channel receiving types, the number of symbols with low channel receiving type priority is greater than or equal to the number of symbols with high channel receiving type priority, that is, the network equipment preferentially selects the symbols with low channel receiving type priority as the guard interval.

In some embodiments, if the symbols in the first set of symbols are all used for receiving PUSCH, the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

determining N symbols in the first symbol set as guard intervals according to the uplink channel receiving condition of the symbols in the first symbol set, including: and determining a guard interval according to the types of information received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the types of the received information comprise only receiving user information or simultaneously receiving the user information and uplink control information UCI.

In some embodiments, determining the guard interval according to the type of information received by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit comprises: the N symbols receiving only the user information are taken as a guard interval.

In some embodiments, if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both used for receiving user information only, determining the guard interval according to the type of information received by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit comprises: and determining the guard interval according to the types of the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit for receiving the user information.

In some embodiments, if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both used to receive user information and UCI simultaneously, determining the guard interval according to the type of information received by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit comprises: and determining a guard interval according to the type of UCI of the PUSCH received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.

In some embodiments, if the symbols in the first set of symbols are all used for receiving PUCCH, the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit; determining N symbols in the first symbol set as guard intervals according to the uplink channel receiving condition of the symbols in the first symbol set, including: and determining a guard interval according to the type of UCI of the PUCCH received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.

In some embodiments, if none of the symbols in the first set of symbols receive the channel, the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit.

In some embodiments, if the symbols in the first set of symbols are all used for receiving SRS, the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit; determining N symbols in the first symbol set as guard intervals according to the uplink channel receiving condition of the symbols in the first symbol set, including: and determining a guard interval according to at least one of the type and the receiving mode of the SRS received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.

The above embodiments show the case that the first symbol set only includes one type of symbol, and the implementation principle and technical effect of the embodiments are the same as those of the embodiments in fig. 6 to 13 on the terminal side.

In some embodiments, if the symbols in the first set of symbols are used for receiving PUSCH and SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit; determining N symbols in the first symbol set as guard intervals according to the uplink channel receiving condition of the symbols in the first symbol set, including: and determining a guard interval according to at least one of the type of SRS received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit, the receiving mode of the SRS and the information type of the received PUSCH.

In some embodiments, determining the guard interval according to the information type of the PUSCH received by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit comprises: and if the information for receiving the PUSCH comprises UCI, taking N symbols for receiving the SRS as a guard interval.

In some embodiments, the determining the type of SRS comprises determining the SRS to be used for positioning and the SRS to be used for sounding, and the determining the guard interval according to the type of SRS received in the last N symbols at the end of the first time unit and in the first N symbols at the beginning of the second time unit comprises: taking N symbols of the SRS received for positioning as a guard interval; or, taking the N symbols of the received PUSCH as a guard interval.

In some embodiments, the receiving manner of the SRS includes periodic, semi-persistent, and aperiodic reception, and determining the guard interval according to the receiving manner of the SRS received by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit includes: taking N symbols of a reception period or a semi-continuous SRS as a guard interval; or, taking the N symbols of the received PUSCH as a guard interval.

In some embodiments, if the symbols in the first set of symbols are used for receiving PUCCH and SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit; determining N symbols in the first symbol set as guard intervals according to the uplink channel receiving condition of the symbols in the first symbol set, including: the N symbols of the received SRS are taken as a guard interval.

In some embodiments, if the first symbol set includes symbols for receiving SRS and symbols for not receiving channels; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit; determining N symbols in the first symbol set as guard intervals according to the uplink channel receiving condition of the symbols in the first symbol set, including: the N symbols that do not receive the channel are taken as guard intervals.

In some embodiments, if the first symbol set includes symbols for receiving PUSCH and symbols for receiving PUCCH; the guard interval is to select continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols for receiving PUSCH in the continuous N symbols is larger than or equal to the number of symbols for receiving PUCCH.

In some embodiments, if the first symbol set includes symbols for receiving PUSCH and symbols for not receiving channel; the guard interval is to select continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of the symbols which do not receive the channel in the continuous N symbols is larger than or equal to the number of the symbols which receive the PUSCH.

In some embodiments, if the first symbol set includes symbols for receiving PUCCH and symbols for not receiving a channel; the guard interval is to select consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols not receiving the channel in the consecutive N symbols is greater than or equal to the number of symbols receiving the PUCCH.

The above embodiments show the case that the first symbol set includes two types of symbols, and the implementation principle and technical effect of the embodiments are the same as those of the embodiments in fig. 14 to 25 at the terminal side.

In some embodiments, if the first symbol set includes symbols for receiving PUSCH, symbols for receiving PUCCH, and symbols for not receiving a channel; the guard interval is to select continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not receive the channel in the continuous N symbols is larger than or equal to the number of the symbols which receive the PUSCH, and the number of the symbols which receive the PUSCH is larger than or equal to the number of the symbols which receive the PUCCH.

In some embodiments, if the first symbol set includes a symbol for receiving SRS, a symbol for receiving PUCCH, and a symbol for not receiving a channel; the guard interval is to select continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not receive the channel in the continuous N symbols is larger than or equal to the number of the symbols which receive the SRS, and the number of the symbols which receive the SRS is larger than or equal to the number of the symbols which receive the PUCCH.

In some embodiments, if the first symbol set includes a symbol for receiving SRS, a symbol for receiving PUSCH, and a symbol for not receiving a channel; the guard interval is a sequence of N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, where:

the number of symbols not receiving the channel is larger than or equal to the number of symbols receiving the SRS, and the number of symbols receiving the SRS is larger than or equal to the number of symbols receiving the PUSCH; or

The number of symbols of the non-reception channel is larger than or equal to the number of symbols of the reception PUSCH, and the number of symbols of the reception PUSCH is larger than or equal to the number of symbols of the reception SRS.

In some embodiments, if the first symbol set includes a symbol for receiving SRS, a symbol for receiving PUSCH, and a symbol for receiving PUCCH; the guard interval is a sequence of N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, where:

the number of symbols for receiving the SRS is larger than or equal to the number of symbols for receiving the PUSCH, and the number of symbols for receiving the PUSCH is larger than or equal to the number of symbols for receiving the PUCCH; or

The number of symbols for receiving PUSCH is greater than or equal to the number of symbols for receiving SRS, which is greater than or equal to the number of symbols for receiving PUCCH.

The above embodiments show the case that the first symbol set includes three types of symbols, and the implementation principle and technical effect of the embodiments are the same as those of the embodiments in fig. 26 to fig. 29 at the terminal side.

In some embodiments, if the first symbol set includes a symbol for receiving SRS, a symbol for receiving PUSCH, a symbol for receiving PUCCH, and a symbol for not receiving a channel; the guard interval is a sequence of N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, where:

the number of symbols not receiving the channel is larger than or equal to the number of symbols receiving the PUSCH, the number of symbols receiving the PUSCH is larger than or equal to the number of symbols receiving the SRS, and the number of symbols receiving the SRS is larger than or equal to the number of symbols receiving the PUCCH; or

The number of symbols of the non-reception channel is larger than or equal to the number of symbols of the reception SRS, the number of symbols of the reception SRS is larger than or equal to the number of symbols of the reception PUSCH, and the number of symbols of the reception PUSCH is larger than or equal to the number of symbols of the reception PUCCH.

The foregoing embodiments show a case where the first symbol set includes four types of symbols, and the implementation principle and technical effect of the embodiments are the same as those of the embodiment of fig. 30 on the terminal side.

The method for determining the guard interval provided in the embodiment of the present application is described in detail above, and the terminal device and the network device provided in the embodiment of the present application will be described below.

Fig. 32 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 32, a terminal device 300 provided in the embodiment of the present application includes:

a processing module 301, configured to determine, according to an uplink channel transmission condition of symbols in the first symbol set, that N symbols in the first symbol set are guard intervals;

the symbols in the first symbol set belong to symbols at the tail end of a first time unit and the start end of a second time unit, the first time unit and the second time unit are two time units which are continuous in a time domain, frequency domain sub-bands corresponding to the first time unit and the second time unit are different, the number of the symbols in the first symbol set is larger than N, and N is a positive integer.

Optionally, the N symbols as the guard interval are consecutive symbols, and the symbols on both sides of the guard interval belong to different time units.

Optionally, the guard interval is the last N symbols at the end of the first time unit; or

The guard interval is the first N symbols at the beginning of the second time unit; or

The guard interval is consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.

Optionally, the uplink channel transmission condition of the symbols in the first symbol set includes at least one of sending a physical uplink shared channel PUSCH, sending a physical uplink control channel PUCCH, sending an sounding reference signal SRS, or not sending a channel.

In a possible implementation, if the symbols in the first symbol set are all used for sending PUSCH, the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 301 is specifically configured to determine a guard interval according to the last N symbols at the end of the first time unit and the first N symbol transmission information types at the beginning of the second time unit, where the transmission information types include only transmitting user information, or simultaneously transmitting user information and uplink control information UCI.

Optionally, the processing module 301 is specifically configured to: n symbols for transmitting only user information are used as guard intervals.

Optionally, if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are only used for sending user information, the processing module 301 is specifically configured to:

and determining a guard interval according to the type of sending user information by the last N symbols at the tail end of the first time unit and the first N symbols at the start end of the second time unit.

Optionally, if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both used to send the user information and the UCI simultaneously, the processing module 301 is specifically configured to: and determining a guard interval according to the type of UCI of PUSCH sent by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.

Optionally, if the symbols in the first symbol set are all used for transmitting the PUCCH, the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 301 is specifically configured to: and determining a guard interval according to the type of UCI of the last N symbols at the tail end of the first time unit and the first N symbols at the start end of the second time unit.

Optionally, if none of the symbols in the first symbol set send a channel, the guard interval is to select consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit.

Optionally, if the symbols in the first symbol set are all used for transmitting the SRS, the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 301 is specifically configured to: and determining a guard interval according to at least one of the type and the transmission mode of SRS transmitted by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.

Optionally, if the symbols in the first symbol set are used for transmitting the PUSCH and the SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 301 is specifically configured to: and determining the guard interval according to at least one of the type of SRS transmitted by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit, the transmission mode of the SRS and the information type of the PUSCH transmitted.

Optionally, the processing module 301 is specifically configured to: if the information for transmitting the PUSCH comprises UCI, taking N symbols for transmitting the SRS as a guard interval.

Optionally, the SRS types include an SRS for positioning and an SRS for sounding, and the processing module 301 is specifically configured to: taking N symbols for transmitting the SRS used for positioning as a guard interval; or

The N symbols transmitting the PUSCH are taken as guard intervals.

Optionally, the SRS is sent in a periodic, semi-persistent, or aperiodic manner, and the processing module 301 is specifically configured to: taking N symbols for transmitting periodic or semi-continuous SRS as a guard interval; or

The N symbols transmitting the PUSCH are taken as a guard interval.

Optionally, if the symbols in the first symbol set are used for transmitting the PUCCH and the SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 301 is specifically configured to: the N symbols for transmitting the SRS are used as guard intervals.

Optionally, if the first symbol set includes a symbol for transmitting the SRS and a symbol for not transmitting a channel; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 301 is specifically configured to: the N symbols of the channel not to be transmitted are taken as a guard interval.

Optionally, if the first symbol set includes a symbol for transmitting a PUSCH and a symbol for transmitting a PUCCH;

the guard interval is continuous N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols for transmitting PUSCH in the continuous N symbols is larger than or equal to the number of symbols for transmitting PUCCH.

Optionally, if the first symbol set includes a symbol for transmitting a PUSCH and a symbol for not transmitting a channel;

the guard interval is to select continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of the symbols which do not transmit the channel in the continuous N symbols is larger than or equal to the number of the symbols which transmit the PUSCH.

Optionally, if the first symbol set includes a symbol for transmitting a PUCCH and a symbol for not transmitting a channel;

the guard interval is to select consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols of the consecutive N symbols in which no channel is transmitted is greater than or equal to the number of symbols for transmitting the PUCCH.

Optionally, if the first symbol set includes a symbol for transmitting a PUSCH, a symbol for transmitting a PUCCH, and a symbol for not transmitting a channel;

the guard interval is to select continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not transmit channels in the continuous N symbols is larger than or equal to the number of the symbols which transmit the PUSCH, and the number of the symbols which transmit the PUSCH is larger than or equal to the number of the symbols which transmit the PUCCH.

Optionally, if the first symbol set includes a symbol used for transmitting the SRS, a symbol used for transmitting the PUCCH, and a symbol not used for transmitting the channel; the guard interval is to select continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not transmit channels in the continuous N symbols is larger than or equal to the number of the symbols which transmit the SRS, and the number of the symbols which transmit the SRS is larger than or equal to the number of the symbols which transmit the PUCCH.

Optionally, if the first symbol set includes a symbol for transmitting the SRS, a symbol for transmitting the PUSCH, and a symbol for not transmitting the channel; the guard interval is a sequence of N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, where:

the number of symbols of the non-transmission channel is greater than or equal to the number of symbols of the transmission SRS, and the number of symbols of the transmission SRS is greater than or equal to the number of symbols of the transmission PUSCH; or

The number of symbols for which the channel is not transmitted is greater than or equal to the number of symbols for which the PUSCH is transmitted, and the number of symbols for which the PUSCH is transmitted is greater than or equal to the number of symbols for which the SRS is transmitted.

Optionally, if the first symbol set includes a symbol for transmitting the SRS, a symbol for transmitting the PUSCH, and a symbol for transmitting the PUCCH; the guard interval is a sequence of N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, where:

the number of symbols for sending the SRS is greater than or equal to the number of symbols for sending the PUSCH, and the number of symbols for sending the PUSCH is greater than or equal to the number of symbols for sending the PUCCH; or

The number of symbols for transmitting PUSCH is greater than or equal to the number of symbols for transmitting SRS, and the number of symbols for transmitting SRS is greater than or equal to the number of symbols for transmitting PUCCH.

Optionally, if the first symbol set includes a symbol for transmitting an SRS, a symbol for transmitting a PUSCH, a symbol for transmitting a PUCCH, and a symbol for not transmitting a channel; the guard interval is a sequence of N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, where:

the number of symbols for not transmitting the channel is greater than or equal to the number of symbols for transmitting the PUSCH, the number of symbols for transmitting the PUSCH is greater than or equal to the number of symbols for transmitting the SRS, and the number of symbols for transmitting the SRS is greater than or equal to the number of symbols for transmitting the PUCCH; or

Optionally, the terminal device 300 further includes: a transceiver module 302.

The transceiver module 302 performs corresponding operations at the determined guard interval.

The processing module 301 is specifically configured to execute at least one of the following steps in the determined guard interval: and performing frequency sub-band readjustment without transmitting/transmitting the channel, and performing rate matching on symbols belonging to a guard interval in the symbols for transmitting the uplink channel.

The terminal device provided in the embodiment of the present application is used for implementing the technical scheme of the terminal device in the foregoing method embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 33 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 33, a network device 400 provided in this embodiment of the present application includes:

a processing module 401, configured to determine, according to an uplink channel reception condition of symbols in the first symbol set, that N symbols in the first symbol set are guard intervals;

The guard interval is a consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.

Optionally, the uplink channel reception condition of the symbols in the first symbol set includes at least one of receiving a physical uplink shared channel PUSCH, receiving a physical uplink control channel PUCCH, receiving an sounding reference signal SRS, or not receiving a channel.

Optionally, if the symbols in the first symbol set are all used for receiving the PUSCH, the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 401 is specifically configured to: and determining a guard interval according to the types of information received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the types of the received information comprise only receiving user information or simultaneously receiving the user information and uplink control information UCI.

Optionally, the processing module 401 is specifically configured to: the N symbols receiving only the user information are taken as a guard interval.

Optionally, if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are only used for receiving the user information, the processing module 401 is specifically configured to:

and determining a guard interval according to the types of the user information received by the last N symbols at the tail end of the first time unit and the first N symbols at the start end of the second time unit.

Optionally, if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both used to receive the user information and the UCI simultaneously, the processing module 401 is specifically configured to:

and determining a guard interval according to the type of UCI of the PUSCH received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.

Optionally, if the symbols in the first symbol set are all used for receiving the PUCCH, the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 401 is specifically configured to: and determining a guard interval according to the type of UCI of the PUCCH received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.

Optionally, if none of the symbols in the first symbol set receive the channel, the guard interval is to select consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit.

Optionally, if the symbols in the first symbol set are all used for receiving the SRS, the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 401 is specifically configured to: and determining a guard interval according to at least one of the type and the receiving mode of the SRS received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.

Optionally, if the symbols in the first symbol set are used for receiving the PUSCH and the SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 401 is specifically configured to: and determining a guard interval according to at least one of the type of SRS received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit, the receiving mode of the SRS and the information type of the received PUSCH.

Optionally, the processing module 401 is specifically configured to: and if the information for receiving the PUSCH comprises UCI, taking N symbols for receiving the SRS as a guard interval.

Optionally, the SRS types include an SRS for positioning and an SRS for sounding, and the processing module 401 is specifically configured to: taking N symbols of the SRS received for positioning as a guard interval; or

And taking N symbols of the received PUSCH as a guard interval.

Optionally, the SRS receiving manner includes periodic, semi-continuous, and aperiodic reception, and the processing module 401 is specifically configured to: taking N symbols of a receiving period or a semi-continuous SRS as a guard interval; or

And taking N symbols of the received PUSCH as a guard interval.

Optionally, if the symbols in the first symbol set are used for receiving the PUCCH and the SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 401 is specifically configured to: the N symbols of the received SRS are taken as a guard interval.

Optionally, if the first symbol set includes a symbol for receiving the SRS and a symbol for not receiving the channel; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module 401 is specifically configured to: the N symbols that do not receive the channel are taken as guard intervals.

Optionally, if the first symbol set includes a symbol for receiving a PUSCH and a symbol for receiving a PUCCH; the guard interval is to select continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols for receiving PUSCH in the continuous N symbols is larger than or equal to the number of symbols for receiving PUCCH.

Optionally, if the first symbol set includes a symbol for receiving a PUSCH and a symbol for not receiving a channel; the guard interval is to select continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not receive the channel in the continuous N symbols is larger than or equal to the number of the symbols which receive the PUSCH.

Optionally, if the first symbol set includes a symbol for receiving a PUCCH and a symbol for not receiving a channel; the guard interval is to select consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols not receiving the channel in the consecutive N symbols is greater than or equal to the number of symbols receiving the PUCCH.

Optionally, if the first symbol set includes a symbol for receiving a PUSCH, a symbol for receiving a PUCCH, and a symbol for not receiving a channel; the guard interval is to select continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not receive the channel in the continuous N symbols is larger than or equal to the number of the symbols which receive the PUSCH, and the number of the symbols which receive the PUSCH is larger than or equal to the number of the symbols which receive the PUCCH.

Optionally, if the first symbol set includes a symbol for receiving the SRS, a symbol for receiving the PUCCH, and a symbol for not receiving the channel; the guard interval is to select continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not receive the channel in the continuous N symbols is larger than or equal to the number of the symbols which receive the SRS, and the number of the symbols which receive the SRS is larger than or equal to the number of the symbols which receive the PUCCH.

Optionally, if the first symbol set includes a symbol for receiving the SRS, a symbol for receiving the PUSCH, and a symbol for not receiving the channel; the guard interval is to select consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, where:

the number of symbols of the non-reception channel is larger than or equal to the number of symbols of the reception SRS, and the number of symbols of the reception SRS is larger than or equal to the number of symbols of the reception PUSCH; or

The number of symbols not receiving the channel is greater than or equal to the number of symbols receiving the PUSCH, which is greater than or equal to the number of symbols receiving the SRS.

Optionally, if the first symbol set includes a symbol for receiving an SRS, a symbol for receiving a PUSCH, and a symbol for receiving a PUCCH; the guard interval is a sequence of N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, where:

the number of the symbols for receiving the SRS is larger than or equal to the number of the symbols for receiving the PUSCH, and the number of the symbols for receiving the PUSCH is larger than or equal to the number of the symbols for receiving the PUCCH; or

Optionally, if the first symbol set includes a symbol for receiving an SRS, a symbol for receiving a PUSCH, a symbol for receiving a PUCCH, and a symbol for not receiving a channel; the guard interval is a sequence of N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, where:

Optionally, the network device 400 further includes: a transceiver module 402.

The transceiver module 402 is configured to perform frequency subband retuning in the determined guard interval.

The network device provided in the embodiment of the present application is used for implementing the technical solution of the network device in the foregoing method embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.

It should be noted that the division of each module of the terminal device or the network device is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the processing module may be a separately established processing element, or may be integrated into a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and a processing element of the apparatus calls and executes the functions of the above determination module. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when some of the above modules are implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor that can call program code. As another example, these modules may be integrated together, implemented in the form of a system-on-a-chip (SOC).

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.

Fig. 34 is a schematic hardware structure diagram of a terminal device according to an embodiment of the present application. As shown in fig. 34, the terminal device 500 may include: a transceiver 501, a processor 502, a memory 503; the memory 503 stores computer-executable instructions; the processor 502 executes the computer execution instruction stored in the memory 503, so that the processor 502 executes the technical solution of the method for determining the guard interval on the terminal device side in any of the foregoing method embodiments.

Alternatively, the processor 502 may be a chip.

Fig. 35 is a schematic hardware structure diagram of a network device according to an embodiment of the present application. As shown in fig. 35, the network device 600 may include: a transceiver 601, a processor 602, a memory 603; the memory 603 stores computer-executable instructions; the processor 602 executes the computer execution instruction stored in the memory 603, so that the processor 602 executes the technical solution of the method for determining the guard interval on the network device side in any of the foregoing method embodiments.

Alternatively, the processor 602 may be a chip.

An embodiment of the present application further provides a computer-readable storage medium, where a computer-executable instruction is stored in the computer-readable storage medium, and when the computer-executable instruction is executed by a processor, the computer-executable instruction is used to implement a technical solution on a terminal device side in any one of the foregoing method embodiments.

An embodiment of the present application further provides a computer-readable storage medium, where a computer execution instruction is stored in the computer-readable storage medium, and when the computer execution instruction is executed by a processor, the computer execution instruction is used to implement a technical solution on a network device side in any one of the foregoing method embodiments.

The embodiment of the present application further provides a program, and when the program is executed by a processor, the program is configured to execute the technical solution on the terminal device side in any one of the foregoing method embodiments.

The embodiment of the present application further provides a program, and when the program is executed by a processor, the program is configured to execute the technical solution on the network device side in any one of the foregoing method embodiments.

The embodiment of the present application further provides a computer program product, which includes a program instruction, where the program instruction is used to implement the technical solution on the terminal device side in any of the foregoing method embodiments.

The embodiment of the present application further provides a computer program product, which includes program instructions, where the program instructions are used to implement the technical solution of the network device side in any of the foregoing method embodiments.

An embodiment of the present application further provides a chip, including: the processing module and the communication interface, the processing module can execute the technical scheme of the terminal device side in the method embodiment.

Further, the chip further includes a storage module (e.g., a memory), where the storage module is configured to store instructions, and the processing module is configured to execute the instructions stored by the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the technical solution on the terminal device side.

An embodiment of the present application further provides a chip, including: and the processing module and the communication interface can execute the technical scheme of the network equipment side in the method embodiment.

Further, the chip further includes a storage module (e.g., a memory), where the storage module is configured to store an instruction, and the processing module is configured to execute the instruction stored in the storage module, and execute the instruction stored in the storage module so that the processing module executes the technical solution on the network device side.

In the present application, "at least two" means two or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship; in the formula, the character "/" indicates that the preceding and following related objects are in a relationship of "division". "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of the present application.

It should be understood that, in the embodiment of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.

Claims

A method for determining a guard interval, comprising:

determining N symbols in a first symbol set as guard intervals according to the uplink channel sending condition of the symbols in the first symbol set;

the symbols in the first symbol set belong to symbols at the tail end of a first time unit and the start end of a second time unit, the first time unit and the second time unit are two time units which are continuous in a time domain, frequency domain sub-bands corresponding to the first time unit and the second time unit are different, the number of the symbols in the first symbol set is larger than N, and N is a positive integer.
The method of claim 1, wherein the N symbols as the guard interval are consecutive symbols, and wherein the symbols on both sides of the guard interval belong to different time units.
The method according to claim 1 or 2,

the guard interval is the last N symbols at the end of the first time unit; or

The guard interval is the first N symbols of the beginning of the second time unit; or

The guard interval is consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.
The method according to any of claims 1-3, wherein the uplink channel transmission of the symbols in the first symbol set comprises at least one of transmitting a physical uplink shared channel, PUSCH, transmitting a physical uplink control channel, PUCCH, transmitting a sounding reference signal, SRS, or not transmitting a channel.
The method according to any of claims 1-4, wherein the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit if the symbols in the first set of symbols are all used for PUSCH transmission;

the determining, according to the uplink channel transmission condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes: and determining the guard interval according to the last N symbols at the tail end of the first time unit and the first N symbol sending information types at the start end of the second time unit, wherein the sending information types comprise that only user information is sent, or user information and uplink control information UCI are sent simultaneously.
The method of claim 5, wherein determining the guard interval according to the type of information transmitted by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit comprises:

taking the N symbols transmitting only user information as the guard interval.
The method according to claim 5 or 6, wherein if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both used for transmitting user information only, the determining the guard interval according to the type of information transmitted by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit comprises:

and determining the guard interval according to the type of sending the user information by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The method as claimed in claim 5 or 6, wherein if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both used for transmitting user information and UCI simultaneously, the determining the guard interval according to the type of information transmitted by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit comprises:

and determining the guard interval according to the type of UCI of PUSCH sent by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The method according to any of claims 1-4, wherein the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit if the symbols in the first symbol set are all used for sending PUCCH;

the determining, according to the uplink channel transmission condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes: and determining a guard interval according to the type of UCI of the PUCCH sent by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The method according to any of claims 1-4, wherein the guard interval is selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit if none of the symbols in the first set of symbols transmit a channel.
The method according to any of claims 1-4, wherein the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit if all the symbols in the first symbol set are used for transmitting SRS;

the determining, according to the uplink channel transmission condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes: and determining a guard interval according to at least one of the type and the transmission mode of SRS transmitted by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The method according to any of claims 1-4, wherein if the symbols in the first set of symbols are used for transmitting PUSCH and SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the determining, according to the uplink channel transmission condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes:

and determining the guard interval according to at least one of the type of SRS transmitted by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, the transmission mode of the SRS and the information type of the PUSCH.
The method of claim 12,

the determining the guard interval according to the information type of the PUSCH transmitted by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit includes: and if the information for sending the PUSCH comprises UCI, taking the N symbols for sending the SRS as a guard interval.
The method of claim 12, wherein the SRS types include SRS for positioning and SRS for sounding, and wherein determining the guard interval based on the type of SRS transmitted in the last N symbols at the end of the first time unit and in the first N symbols at the beginning of the second time unit comprises:

taking the N symbols transmitting SRS for positioning as the guard interval; or

Taking the N symbols for sending PUSCH as the guard interval.
The method of claim 12, wherein the SRS is transmitted in a periodic, semi-persistent, aperiodic transmission, and wherein determining the guard interval according to the SRS transmission in the last N symbols at the end of the first time unit and in the first N symbols at the beginning of the second time unit comprises:

taking the N symbols transmitting periodic or semi-persistent SRS as the guard interval; or

Taking the N symbols for sending PUSCH as the guard interval.
The method according to any of claims 1-4, wherein if the symbols in the first set of symbols are used for transmitting PUCCH and SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the determining, according to the uplink channel transmission condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes: the N symbols for transmitting SRS are taken as the guard interval.
The method according to any of claims 1-4, wherein if the first symbol set comprises symbols for transmitting SRS and symbols for not transmitting channel; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the determining, according to the uplink channel transmission condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes: taking the N symbols not transmitting a channel as the guard interval.
The method according to any of claims 1-4, wherein if the first symbol set comprises symbols for transmitting PUSCH and symbols for transmitting PUCCH;

the guard interval is continuous N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols for sending PUSCH in the continuous N symbols is larger than or equal to the number of symbols for sending PUCCH.
The method according to any of claims 1-4, wherein if the first symbol set comprises symbols for transmitting PUSCH and symbols for not transmitting channel;

the guard interval is continuous N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of the symbols which do not transmit channels in the continuous N symbols is larger than or equal to the number of the symbols which transmit PUSCH.
The method according to any of claims 1-4, wherein if the first symbol set comprises symbols for transmitting PUCCH and symbols for not transmitting channel;

the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols of the consecutive N symbols in which no channel is transmitted is greater than or equal to the number of symbols in which the PUCCH is transmitted.
The method according to any of claims 1-4, wherein if the first symbol set comprises symbols for sending PUSCH, symbols for sending PUCCH and symbols for not sending channel;

and the guard interval is formed by selecting continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not transmit channels in the continuous N symbols is greater than or equal to the number of the symbols which transmit the PUSCH, and the number of the symbols which transmit the PUSCH is greater than or equal to the number of the symbols which transmit the PUCCH.
The method according to any of claims 1-4, wherein if the first symbol set comprises symbols for transmitting SRS, symbols for transmitting PUCCH, and symbols for not transmitting channel; and the guard interval is formed by selecting continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not transmit channels in the continuous N symbols is larger than or equal to the number of the symbols which transmit the SRS, and the number of the symbols which transmit the SRS is larger than or equal to the number of the symbols which transmit the PUCCH.
The method according to any of claims 1-4, wherein if the first symbol set comprises a symbol for transmitting SRS, a symbol for transmitting PUSCH, and a symbol for not transmitting channel; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of symbols for which the channel is not transmitted is greater than or equal to the number of symbols for which the SRS is transmitted, and the number of symbols for which the SRS is transmitted is greater than or equal to the number of symbols for which the PUSCH is transmitted; or

The number of symbols for which the channel is not transmitted is greater than or equal to the number of symbols for which the PUSCH is transmitted, and the number of symbols for which the PUSCH is transmitted is greater than or equal to the number of symbols for which the SRS is transmitted.
The method according to any of claims 1-4, wherein if the first symbol set comprises symbols for transmitting SRS, symbols for transmitting PUSCH and symbols for transmitting PUCCH; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of symbols for sending the SRS is greater than or equal to the number of symbols for sending the PUSCH, and the number of symbols for sending the PUSCH is greater than or equal to the number of symbols for sending the PUCCH; or

The number of symbols for transmitting PUSCH is greater than or equal to the number of symbols for transmitting SRS, and the number of symbols for transmitting SRS is greater than or equal to the number of symbols for transmitting PUCCH.
The method according to any of claims 1-4, wherein if the first symbol set comprises a symbol for transmitting SRS, a symbol for transmitting PUSCH, a symbol for transmitting PUCCH, and a symbol for not transmitting channel; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of symbols for not transmitting the channel is greater than or equal to the number of symbols for transmitting the PUSCH, the number of symbols for transmitting the PUSCH is greater than or equal to the number of symbols for transmitting the SRS, and the number of symbols for transmitting the SRS is greater than or equal to the number of symbols for transmitting the PUCCH; or

The number of symbols for which the channel is not transmitted is greater than or equal to the number of symbols for which the SRS is transmitted, the number of symbols for which the SRS is transmitted is greater than or equal to the number of symbols for which the PUSCH is transmitted, and the number of symbols for which the PUSCH is transmitted is greater than or equal to the number of symbols for which the PUCCH is transmitted.
A method for determining a guard interval, comprising:

determining N symbols in a first symbol set as guard intervals according to the uplink channel receiving condition of the symbols in the first symbol set;

the symbols in the first symbol set belong to symbols at the tail end of a first time unit and the start end of a second time unit, the first time unit and the second time unit are two time units which are continuous in a time domain, frequency domain sub-bands corresponding to the first time unit and the second time unit are different, the number of the symbols in the first symbol set is larger than N, and N is a positive integer.
The method of claim 26, wherein the N symbols of the guard interval are consecutive symbols, and wherein the symbols on both sides of the guard interval belong to different time units.
The method of claim 26 or 27,

the guard interval is the last N symbols at the end of the first time unit; or

The guard interval is the first N symbols of the beginning of the second time unit; or

The guard interval is consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.
The method according to any of claims 26-28, wherein the uplink channel reception of a symbol in the first set of symbols comprises at least one of receiving a physical uplink shared channel, PUSCH, receiving a physical uplink control channel, PUCCH, receiving a sounding reference signal, SRS, or not receiving a channel.
The method according to any of claims 26-29, wherein the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit if the symbols in the first set of symbols are all used for receiving PUSCH;

the determining, according to the uplink channel reception condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes: and determining the guard interval according to the types of information received by the last N symbols at the tail end of the first time unit and the first N symbols at the start end of the second time unit, wherein the types of the received information comprise that only user information is received, or the user information and uplink control information UCI are received simultaneously.
The method of claim 30, wherein determining the guard interval according to the type of information received by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit comprises:

taking the N symbols receiving only user information as the guard interval.
The method according to claim 30 or 31, wherein if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both used for receiving user information only, said determining the guard interval according to the type of information received by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit comprises:

and determining the guard interval according to the type of the user information received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The method as claimed in claim 30 or 31, wherein if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both used for receiving user information and UCI simultaneously, the determining the guard interval according to the types of information received by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit comprises:

and determining the guard interval according to the type of UCI of PUSCH received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
A method according to any of claims 26-29, wherein the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit if the symbols in the first set of symbols are all used for receiving PUCCH;

the determining, according to the uplink channel reception condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes: and determining a guard interval according to the type of UCI of the PUCCH received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The method according to any of claims 26-29, wherein the guard interval is selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit if none of the symbols in the first set of symbols receive a channel.
The method according to any of claims 26-29, wherein the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit if the symbols in the first set of symbols are all used for receiving SRS;

the determining, according to the uplink channel reception condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes: and determining a guard interval according to at least one of the type and the receiving mode of SRS received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The method according to any of claims 26-29, wherein if the symbols in the first set of symbols are used for receiving PUSCH and SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the determining, according to the uplink channel reception condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes:

and determining the guard interval according to at least one of the type of receiving the SRS, the receiving mode of the SRS and the information type of receiving the PUSCH of the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The method of claim 37,

the determining the guard interval according to the information type of the PUSCH received by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit includes: and if the information for receiving the PUSCH comprises UCI, taking the N symbols for receiving the SRS as a guard interval.
The method of claim 37, wherein the SRS types include SRS for positioning and SRS for sounding, and wherein determining the guard interval based on the type of SRS received in a last N symbols at an end of the first time unit and a first N symbols at a beginning of the second time unit comprises:

receiving the N symbols of an SRS for positioning as the guard interval; or

Taking the N symbols of the received PUSCH as the guard interval.
The method of claim 37, wherein the receiving of the SRS comprises periodic, semi-persistent, aperiodic reception, and wherein determining the guard interval according to the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit comprises:

taking the N symbols of a received periodic or semi-persistent SRS as the guard interval; or

Taking the N symbols of the received PUSCH as the guard interval.
The method according to any of claims 26-29, wherein if a symbol in the first set of symbols is used for receiving PUCCH and SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the determining, according to the uplink channel reception condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes: taking the N symbols of the received SRS as the guard interval.
A method according to any of claims 26-29, wherein if the first set of symbols comprises symbols for receiving SRS and symbols for not receiving channels; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the determining, according to the uplink channel reception condition of the symbols in the first symbol set, that N symbols in the first symbol set are guard intervals includes: taking the N symbols that do not receive a channel as the guard interval.
The method according to any of claims 26-29, wherein if the first set of symbols comprises symbols for receiving PUSCH and symbols for receiving PUCCH;

the guard interval is continuous N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols for receiving PUSCH in the continuous N symbols is larger than or equal to the number of symbols for receiving PUCCH.
The method according to any of claims 26-29, wherein if the first symbol set comprises symbols for receiving PUSCH and symbols for not receiving channel;

the guard interval is continuous N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of the symbols which do not receive the channel in the continuous N symbols is larger than or equal to the number of the symbols which receive the PUSCH.
The method according to any of claims 26-29, wherein if the first symbol set comprises symbols for receiving PUCCH and symbols for not receiving a channel;

the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of non-reception channel symbols in the consecutive N symbols is greater than or equal to the number of symbols for reception of the PUCCH.
The method according to any of claims 26-29, wherein if the first symbol set comprises symbols for receiving PUSCH, symbols for receiving PUCCH, and symbols for not receiving channel;

and the guard interval is formed by selecting continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not receive a channel in the continuous N symbols is greater than or equal to the number of the symbols which receive a PUSCH, and the number of the symbols which receive the PUSCH is greater than or equal to the number of the symbols which receive a PUCCH.
The method according to any of claims 26-29, wherein if the first symbol set comprises symbols for receiving SRS, symbols for receiving PUCCH, and symbols for not receiving a channel; and selecting continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not receive the channel in the continuous N symbols is larger than or equal to the number of the symbols which receive the SRS, and the number of the symbols which receive the SRS is larger than or equal to the number of the symbols which receive the PUCCH.
The method according to any of claims 26-29, wherein if the first symbol set comprises symbols for receiving SRS, symbols for receiving PUSCH, and symbols for not receiving channel; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of symbols not receiving the channel is larger than or equal to the number of symbols receiving the SRS, and the number of symbols receiving the SRS is larger than or equal to the number of symbols receiving the PUSCH; or

The number of symbols not receiving the channel is greater than or equal to the number of symbols receiving the PUSCH, which is greater than or equal to the number of symbols receiving the SRS.
The method according to any of claims 26-29, wherein if the first symbol set comprises symbols for receiving SRS, symbols for receiving PUSCH, and symbols for receiving PUCCH; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of the symbols for receiving the SRS is larger than or equal to the number of the symbols for receiving the PUSCH, and the number of the symbols for receiving the PUSCH is larger than or equal to the number of the symbols for receiving the PUCCH; or

The number of symbols for receiving PUSCH is greater than or equal to the number of symbols for receiving SRS, which is greater than or equal to the number of symbols for receiving PUCCH.
The method according to any of claims 26-29, wherein if the first symbol set comprises symbols for receiving SRS, symbols for receiving PUSCH, symbols for receiving PUCCH, and symbols for not receiving channel; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of symbols of a non-reception channel is greater than or equal to the number of symbols of a reception PUSCH, the number of symbols of the reception PUSCH is greater than or equal to the number of symbols of a reception SRS, and the number of symbols of the reception SRS is greater than or equal to the number of symbols of the reception PUCCH; or

The number of symbols of the non-reception channel is larger than or equal to the number of symbols of the reception SRS, the number of symbols of the reception SRS is larger than or equal to the number of symbols of the reception PUSCH, and the number of symbols of the reception PUSCH is larger than or equal to the number of symbols of the reception PUCCH.
A terminal device, comprising:

a processing module, configured to determine, according to an uplink channel transmission condition of symbols in a first symbol set, that N symbols in the first symbol set are guard intervals;

the symbols in the first symbol set belong to symbols at the tail end of a first time unit and the start end of a second time unit, the first time unit and the second time unit are two time units which are continuous in a time domain, frequency domain sub-bands corresponding to the first time unit and the second time unit are different, the number of the symbols in the first symbol set is greater than N, and N is a positive integer.
The terminal device of claim 51, wherein the N symbols that are the guard interval are consecutive symbols, and wherein the symbols on both sides of the guard interval belong to different time units.
The terminal device of claim 51 or 52,

the guard interval is the last N symbols at the end of the first time unit; or

The guard interval is the first N symbols of the beginning of the second time unit; or

The guard interval is consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.
The terminal device according to any of claims 51-53, wherein the uplink channel transmission of symbols in the first set of symbols comprises at least one of transmitting a physical uplink shared channel, PUSCH, transmitting a physical uplink control channel, PUCCH, transmitting a sounding reference signal, SRS, or not transmitting a channel.
The terminal device according to any of claims 51-54, wherein if the symbols in the first set of symbols are all used for PUSCH transmission, the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module is specifically configured to determine the guard interval according to the last N symbols at the end of the first time unit and the first N symbol transmission information types at the beginning of the second time unit, where the transmission information types include only transmitting user information, or simultaneously transmitting user information and uplink control information UCI.
The terminal device of claim 55, wherein the processing module is specifically configured to:

taking the N symbols for transmitting only user information as the guard interval.
The terminal device according to claim 55 or 56, wherein if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are only used for sending user information, the processing module is specifically configured to:

and determining the guard interval according to the type of the user information sent by the last N symbols at the tail end of the first time unit and the first N symbols at the start end of the second time unit.
The terminal device of claim 55 or 56, wherein if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both used for sending user information and UCI simultaneously, the processing module is specifically configured to:

and determining the guard interval according to the type of UCI of PUSCH sent by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The terminal device of any one of claims 51-54, wherein the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit if the symbols in the first set of symbols are all used for sending PUCCH;

the processing module is specifically configured to: and determining a guard interval according to the type of UCI of the last N symbols at the tail end of the first time unit and the first N symbols at the start end of the second time unit.
The terminal device according to any of claims 51-54, wherein if none of the symbols in the first set of symbols transmit a channel, the guard interval is selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit.
Terminal device according to any of claims 51-54, wherein the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit, if the symbols in the first set of symbols are all used for transmitting SRS;

the processing module is specifically configured to: and determining a guard interval according to at least one of the type and the transmission mode of SRS transmitted by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The terminal device according to any of claims 51-54, wherein if a symbol in the first set of symbols is used for transmitting PUSCH and SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module is specifically configured to: and determining the guard interval according to at least one of the type of SRS transmitted by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit, the transmission mode of the SRS and the information type of PUSCH transmitted.
The terminal device of claim 62, wherein the processing module is specifically configured to:

and if the information for sending the PUSCH comprises UCI, taking the N symbols for sending the SRS as a guard interval.
The terminal device of claim 62, wherein the SRS types include an SRS for positioning and an SRS for sounding, and wherein the processing module is specifically configured to:

taking the N symbols in which the SRS for positioning is transmitted as the guard interval; or

Taking the N symbols transmitting PUSCH as the guard interval.
The terminal device of claim 62, wherein the SRS is transmitted in a periodic, semi-persistent, or aperiodic manner, and wherein the processing module is specifically configured to:

taking the N symbols transmitting periodic or semi-persistent SRS as the guard interval; or

Taking the N symbols for sending PUSCH as the guard interval.
A terminal device according to any of claims 51-54, characterised in that if a symbol in the first set of symbols is used for transmitting PUCCH and SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module is specifically configured to: the N symbols for transmitting SRS are taken as the guard interval.
A terminal device according to any of claims 51-54, characterised in that if the first set of symbols comprises symbols for transmitting SRS and symbols for no transmission channel; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module is specifically configured to: taking the N symbols of a non-transmission channel as the guard interval.
The terminal device according to any of claims 51-54, wherein if the first set of symbols comprises symbols for PUSCH transmission and symbols for PUCCH transmission;

the guard interval is continuous N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols for transmitting PUSCH in the continuous N symbols is larger than or equal to the number of symbols for transmitting PUCCH.
The terminal device according to any of claims 51-54, wherein if the first symbol set comprises symbols for PUSCH transmission and symbols for no channel transmission;

the guard interval is continuous N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols of the continuous N symbols for which no channel is transmitted is larger than or equal to the number of symbols for which a PUSCH is transmitted.
A terminal device according to any of claims 51-54, characterised in that if the first set of symbols comprises symbols for transmitting PUCCH and symbols for not transmitting channels;

and the guard interval is formed by selecting continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not transmit a channel in the continuous N symbols is larger than or equal to the number of the symbols which transmit PUCCH.
The terminal device according to any of claims 51-54, wherein if the first symbol set comprises symbols for PUSCH transmission, symbols for PUCCH transmission, and symbols for non-transmission channels;

and the guard interval is formed by selecting continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not transmit channels in the continuous N symbols is greater than or equal to the number of the symbols which transmit the PUSCH, and the number of the symbols which transmit the PUSCH is greater than or equal to the number of the symbols which transmit the PUCCH.
A terminal device according to any of claims 51-54, characterised in that if the first set of symbols comprises symbols for transmitting SRS, symbols for transmitting PUCCH and symbols for not transmitting channels; the guard interval is formed by selecting continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of symbols which do not transmit a channel in the continuous N symbols is larger than or equal to the number of symbols which transmit an SRS, and the number of symbols which transmit the SRS is larger than or equal to the number of symbols which transmit the PUCCH.
The terminal device according to any of claims 51-54, wherein if the first symbol set comprises a symbol for transmitting SRS, a symbol for transmitting PUSCH, and a symbol for not transmitting channel; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of symbols for which the channel is not transmitted is greater than or equal to the number of symbols for which the SRS is transmitted, and the number of symbols for which the SRS is transmitted is greater than or equal to the number of symbols for which the PUSCH is transmitted; or

The number of symbols for which the channel is not transmitted is greater than or equal to the number of symbols for which the PUSCH is transmitted, and the number of symbols for which the PUSCH is transmitted is greater than or equal to the number of symbols for which the SRS is transmitted.
The terminal device according to any of claims 51-54, wherein if the first symbol set comprises symbols for transmitting SRS, symbols for transmitting PUSCH and symbols for transmitting PUCCH; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of symbols for sending the SRS is greater than or equal to the number of symbols for sending the PUSCH, and the number of symbols for sending the PUSCH is greater than or equal to the number of symbols for sending the PUCCH; or

The number of symbols for transmitting PUSCH is greater than or equal to the number of symbols for transmitting SRS, and the number of symbols for transmitting SRS is greater than or equal to the number of symbols for transmitting PUCCH.
A terminal device according to any of claims 51-54, characterised in that if the first set of symbols comprises symbols for transmitting SRS, symbols for transmitting PUSCH, symbols for transmitting PUCCH and symbols not transmitting a channel; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of symbols for not transmitting the channel is greater than or equal to the number of symbols for transmitting the PUSCH, the number of symbols for transmitting the PUSCH is greater than or equal to the number of symbols for transmitting the SRS, and the number of symbols for transmitting the SRS is greater than or equal to the number of symbols for transmitting the PUCCH; or

The number of symbols for which the channel is not transmitted is greater than or equal to the number of symbols for which the SRS is transmitted, the number of symbols for which the SRS is transmitted is greater than or equal to the number of symbols for which the PUSCH is transmitted, and the number of symbols for which the PUSCH is transmitted is greater than or equal to the number of symbols for which the PUCCH is transmitted.
A network device, comprising:

a processing module, configured to determine, according to an uplink channel reception condition of symbols in a first symbol set, that N symbols in the first symbol set are guard intervals;

the symbols in the first symbol set belong to symbols at the tail end of a first time unit and the start end of a second time unit, the first time unit and the second time unit are two time units which are continuous in a time domain, frequency domain sub-bands corresponding to the first time unit and the second time unit are different, the number of the symbols in the first symbol set is greater than N, and N is a positive integer.
The network device of claim 76, wherein the N symbols that are the guard interval are consecutive symbols, and wherein the symbols on both sides of the guard interval belong to different time units.
The network device of claim 76 or 77,

the guard interval is the last N symbols at the end of the first time unit; or

The guard interval is the first N symbols of the beginning of the second time unit; or

The guard interval is consecutive N symbols selected from the last N-1 symbols at the end of the first time unit and the first N-1 symbols at the beginning of the second time unit.
The network device of any of claims 76-78, wherein uplink channel reception of symbols in the first set of symbols comprises at least one of receiving a Physical Uplink Shared Channel (PUSCH), receiving a Physical Uplink Control Channel (PUCCH), receiving a Sounding Reference Signal (SRS), or not receiving a channel.
The network device of any one of claims 76-79, wherein the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit if the symbols in the first set of symbols are all for receiving PUSCH;

the processing module is specifically configured to: and determining the guard interval according to the types of information received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the types of the received information comprise only receiving user information or simultaneously receiving the user information and uplink control information UCI.
The network device of claim 80, wherein the processing module is specifically configured to:

taking the N symbols receiving only user information as the guard interval.
The network device according to claim 80 or 81, wherein if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both only used for receiving user information, the processing module is specifically configured to:

and determining the guard interval according to the type of the user information received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The network device according to claim 80 or 81, wherein if the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit are both used for receiving user information and UCI simultaneously, the processing module is specifically configured to:

and determining the guard interval according to the type of UCI of PUSCH received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The network device of any one of claims 76-79, wherein the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit if the symbols in the first set of symbols are all used for receiving PUCCH;

the processing module is specifically configured to: and determining a guard interval according to the type of UCI of the PUCCH received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The network device of any one of claims 76-79, wherein the guard interval is N consecutive symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit if none of the symbols in the first set of symbols receive a channel.
The network device of any one of claims 76-79, wherein the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit if all symbols in the first set of symbols are used for receiving SRS;

the processing module is specifically configured to: and determining a guard interval according to at least one of the type and the receiving mode of SRS received by the last N symbols at the tail end of the first time unit and the first N symbols at the beginning of the second time unit.
The network device of any of claims 76-79, wherein if a symbol in the first set of symbols is used for receiving PUSCH and SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module is specifically configured to: and determining the guard interval according to at least one of the type of SRS received by the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, the receiving mode of the SRS and the information type of the received PUSCH.
The network device of claim 87, wherein the processing module is specifically configured to:

and if the information for receiving the PUSCH comprises UCI, taking the N symbols for receiving the SRS as a guard interval.
The network device of claim 87, wherein the SRS types include an SRS for positioning and an SRS for sounding, and wherein the processing module is specifically configured to:

receiving the N symbols of an SRS for positioning as the guard interval; or

Taking the N symbols of the received PUSCH as the guard interval.
The network device of claim 87, wherein the SRS is received in a periodic, semi-persistent, or aperiodic manner, and wherein the processing module is specifically configured to:

taking the N symbols of a received periodic or semi-persistent SRS as the guard interval; or

Taking the N symbols of the received PUSCH as the guard interval.
The network device of any one of claims 76-79, wherein if a symbol in the first set of symbols is used for receiving PUCCH and SRS; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module is specifically configured to: taking the N symbols of the received SRS as the guard interval.
The network device of any one of claims 76-79, wherein if the first set of symbols comprises symbols for receiving SRS and symbols for not receiving a channel; the guard interval is the last N symbols at the end of the first time unit or the first N symbols at the beginning of the second time unit;

the processing module is specifically configured to: taking the N symbols that do not receive a channel as the guard interval.
The network device according to any of claims 76-79, wherein if the first set of symbols comprises symbols for receiving PUSCH and symbols for receiving PUCCH;

the guard interval is continuous N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of symbols for receiving PUSCH in the continuous N symbols is larger than or equal to the number of symbols for receiving PUCCH.
The network device of any of claims 76-79, wherein if the first set of symbols comprises symbols for receiving PUSCH and symbols not receiving a channel;

the guard interval is continuous N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of the symbols which do not receive the channel in the continuous N symbols is larger than or equal to the number of the symbols which receive the PUSCH.
The network device of any one of claims 76-79, wherein if the first set of symbols comprises symbols for receiving PUCCH and symbols for not receiving a channel;

the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, and the number of non-reception channel symbols in the consecutive N symbols is greater than or equal to the number of symbols for reception of the PUCCH.
The network device according to any of claims 76-79, wherein if the first set of symbols comprises symbols for receiving PUSCH, symbols for receiving PUCCH and symbols for not receiving a channel;

and the guard interval is formed by selecting continuous N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not receive a channel in the continuous N symbols is greater than or equal to the number of the symbols which receive a PUSCH, and the number of the symbols which receive the PUSCH is greater than or equal to the number of the symbols which receive a PUCCH.
The network device of any one of claims 76-79, wherein if the first set of symbols comprises symbols for receiving SRS, symbols for receiving PUCCH, and symbols for not receiving a channel; the guard interval is continuous N symbols selected from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, wherein the number of the symbols which do not receive the channel in the continuous N symbols is larger than or equal to the number of the symbols which receive the SRS, and the number of the symbols which receive the SRS is larger than or equal to the number of the symbols which receive the PUCCH.
The network device of any one of claims 76-79, wherein if the first set of symbols comprises symbols for receiving SRS, symbols for receiving PUSCH, and symbols not receiving a channel; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of symbols not receiving the channel is larger than or equal to the number of symbols receiving the SRS, and the number of symbols receiving the SRS is larger than or equal to the number of symbols receiving the PUSCH; or

The number of symbols not receiving the channel is greater than or equal to the number of symbols receiving the PUSCH, which is greater than or equal to the number of symbols receiving the SRS.
The network device according to any of claims 76-79, wherein if the first set of symbols comprises symbols for receiving SRS, symbols for receiving PUSCH and symbols for receiving PUCCH; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of the symbols for receiving the SRS is larger than or equal to the number of the symbols for receiving the PUSCH, and the number of the symbols for receiving the PUSCH is larger than or equal to the number of the symbols for receiving the PUCCH; or

The number of symbols for receiving PUSCH is greater than or equal to the number of symbols for receiving SRS, which is greater than or equal to the number of symbols for receiving PUCCH.
The network device according to any of claims 76-79, wherein if the first symbol set comprises symbols for receiving SRS, symbols for receiving PUSCH, symbols for receiving PUCCH, and symbols not receiving channel; the guard interval is a selection of consecutive N symbols from the last N symbols at the end of the first time unit and the first N symbols at the beginning of the second time unit, of which:

the number of symbols not receiving the channel is larger than or equal to the number of symbols receiving the PUSCH, the number of symbols receiving the PUSCH is larger than or equal to the number of symbols receiving the SRS, and the number of symbols receiving the SRS is larger than or equal to the number of symbols receiving the PUCCH; or

The number of symbols of the non-reception channel is larger than or equal to the number of symbols of the reception SRS, the number of symbols of the reception SRS is larger than or equal to the number of symbols of the reception PUSCH, and the number of symbols of the reception PUSCH is larger than or equal to the number of symbols of the reception PUCCH.
A terminal device, comprising: a transceiver, a processor, a memory;

the memory stores computer execution instructions;

the processor executes computer-executable instructions stored by the memory, causing the processor to perform the method of any of claims 1-25.
A network device, comprising: a transceiver, a processor, a memory;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory, causing the processor to perform the method of any of claims 26-50.
A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, perform the method of any one of claims 1-25.
A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, perform the method of any one of claims 26-50.