CN108366028B

CN108366028B - Cyclic Prefix (CP) determining method and wireless network equipment

Info

Publication number: CN108366028B
Application number: CN201710057479.6A
Authority: CN
Inventors: 吴宁; 唐臻飞; 李新县; 唐浩; 大卫·简·玛丽·马瑞泽
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-01-26
Filing date: 2017-01-26
Publication date: 2021-01-29
Anticipated expiration: 2037-01-26
Also published as: WO2018137551A1; CN108366028A

Abstract

The embodiment of the invention provides a method for determining a Cyclic Prefix (CP) and wireless network equipment, wherein the method comprises the following steps: the wireless network equipment determines CP configuration information, wherein the CP configuration information comprises at least one of a CP configuration period, a CP type and a CP length; the wireless network device determines a CP for a first time unit based on the CP configuration information. By adopting the method and the device, flexible configuration or switching of different CP types can be realized.

Description

Cyclic Prefix (CP) determining method and wireless network equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a cyclic prefix CP determining method and a wireless network device.

Background

In a wireless communication system based on OFDM (Orthogonal Frequency Division Multiplexing, abbreviated OFDM, chinese, Orthogonal Frequency Division Multiplexing), in order to resist inter-symbol interference caused by channel multipath, a design of adding a Cyclic Prefix (abbreviated CP) to a symbol is adopted. Wherein, the larger the delay spread of multipath, the longer the need for CP. For a sub-carrier interval, in order to meet the delay spread requirements of different scenarios, two CP types, namely, Normal CP (abbreviated CP) and Extended CP (abbreviated ECP), may be used. The NCP and the ECP are two CP types with different lengths, the ECP length is longer than the NCP length, and the CP overhead is higher.

In data transmission, with the variation of the user channel delay spread, the requirements for CP types may be different, and therefore flexible configuration between different CP types is required. However, in The Fifth Generation Mobile Communication Technology (abbreviated as 5G), a design supporting multiple subcarrier spacing is proposed to support traffic diversity and scene diversity, for subcarrier spacing greater than 15kHz, The length of one time unit (e.g., timeslot) of NCP and ECP may not be The same, i.e., The time unit boundaries of different CP types in The domain may not be aligned, and thus flexible configuration of CP types at The time unit level cannot be performed. For example, taking a system bandwidth with a subcarrier interval of 60kHz and 20MHz (a sampling rate of 15360 sampling points (Ts): 0.5ms is 30.72 MHz), and one time unit is one time slot, as shown in fig. 1, it is a schematic diagram of the lengths of NCP and ECP within 0.5ms when the subcarrier interval is 60kHz, and assuming that the first time slot is NCP (the time slot length is 3852Ts, which is about 0.12539ms), if it is necessary to switch from NCP to ECP, that is, the second time slot is switched to ECP (the time slot length is 3840Ts, which is 0.125ms), since the end time of the NCP time slot covers the start time of part of the ECP time slot, flexible configuration of different CP types cannot be realized.

Disclosure of Invention

The embodiment of the invention provides a CP (content provider) determining method and wireless network equipment, which can realize flexible configuration of different CP types.

In a first aspect, an embodiment of the present invention provides a CP determining method, including:

the first wireless network device determines CP configuration information, wherein the CP configuration information may include at least one of a CP configuration period, a CP type and a CP length;

the first wireless network device determines a CP for the first time unit based on the CP configuration information.

The CP type may be a first CP type such as NCP, or a second CP type such as ECP.

In some possible implementations, the CP configuration information may include a CP configuration period and a CP type, the CP configuration period being a predefined or signaling-configured based length of time, which may be K x milliseconds. Further, the first wireless network device may also send a message to a second wireless network device indicating the CP type based on the CP configuration period.

The CP type may be a first CP type or a second CP type. The first CP type may be NCP, the second CP type may be ECP, and the CP configuration period may be a preset or signaling configuration or a time length determined by an internal algorithm, for example, K x milliseconds, and Z time units may be included in the K x milliseconds, that is, the time length may also be described as Z time units, the time units may be symbols/slots/subframes, and the like, Z and K may be integers greater than or equal to 1, and x is greater than 0. Alternatively, the x milliseconds may be 0.5 milliseconds (ms), i.e., the CP configuration period may be 0.5ms × K.

Further optionally, the CP configuration information may be used to determine a CP configuration of at least one symbol or one channel in the first time unit.

In some possible implementations, the CP configuration information may include a CP configuration period and a CP type, and the unit of the first time unit is a first time unit; when the CP type is a first CP type, the CP configuration period is at least one first time unit; when the CP type is the second CP type, the CP configuration period is a time length determined based on a predefined or signaling configuration or an internal algorithm, and the time length may be K x milliseconds, for example, x is 0.5. Further, the first wireless network device may also send a message to a second wireless network device indicating the CP type based on the CP configuration period.

The first wireless network device may be a base station or a terminal; the second wireless network device may be a terminal or a base station. For example, the communication involved in the embodiments of the present invention may be between a base station and a terminal, or between a base station and a base station, such as between a macro base station and a small base station, or between a terminal and a terminal, such as in a D2D network.

When the CP type indicated by the CP configuration information is the first CP type, the length of the CP configuration period may be an integer (greater than or equal to 1, that is, at least one) of the length of the first time unit; when the CP type indicated by the CP configuration information is the second CP type, the CP configuration period may be a time length determined based on a predefined or signaling configuration or an internal algorithm, such as Z time units or K × x milliseconds, and x may be 0.5. The first wireless network device may configure the CP of the time unit in the CP configuration period in which the first time unit is located as the CP of the CP type indicated by the CP configuration information.

Further optionally, the first wireless network device may send the message to the second wireless network device over the second time unit. The second time unit may be determined based on at least one of a number of first time units included in one second time unit, a first offset parameter, and the CP configuration period. Wherein the time unit of the first time unit and the second time unit is a first time unit; a second time unit includes at least one first time unit, such as the length of the at least one first time unit and a length equal to one of the second time units, e.g., the first time unit may be a slot and the second time unit may be a subframe. Further, the unit of the first offset parameter may correspond to the unit of the first time unit and the second time unit, that is, the unit of the first offset parameter may be the first time unit, or may be another time unit, and the first offset parameter may be predefined or configured through signaling, and may be used to determine the offset value of the second time unit in the CP configuration period or a second time unit. Therefore, the first wireless network device can perform CP configuration by determining the CP configuration period and the CP type, so that the CP types in each CP configuration period are the same as those in 0.5ms K, thereby avoiding the problem of boundary misalignment, realizing flexible configuration/switching of the CP types at the level of 0.5ms, reducing the number of messages in the system and reducing the system signaling overhead.

Further optionally, the CP configuration period may also be predefined or signaled to the second wireless network device.

Further optionally, the message or the signaling may be high-level information, such as a broadcast message, a system message, a downlink message in an Access process, a Radio Resource Control (RRC) signaling, or a Media Access Control (MAC) ce (Control element), or a physical layer Control signaling. Alternatively, the message or signaling may also be physical layer Downlink Control Information (DCI), and the like, which is not limited in this application.

Further optionally, the CP configuration information may further include a second offset parameter; the second offset parameter may be determined based on at least one of an identity of the second time unit and the CP configuration period; alternatively, the second offset parameter may also be based on a predefined or signaling or internal algorithm implementation.

Further optionally, the CPs of the time units included in the range from the CP configuration period to the CP configuration period corresponding to the next CP configuration information before can be configured as the CPs of the CP type indicated by the CP configuration information. Thus enabling periodic CP configuration with low overhead.

In some possible implementations, the CP configuration information may include a CP type and a CP length, and the CP type is a second CP type; the CP length may be determined based on the subcarrier spacing of the first time unit, the identity of the first time unit, and the number of first time units included in a third time unit. The time unit of the first time unit is a first time unit, and one third time unit includes at least one first time unit, that is, the length of one third time unit is the same as the length of at least one first time unit. That is, one third unit in the time domain includes an integer number of the first time units, for example, the length of the integer number of the first time units in the time domain is equal to the length of one third time unit. For example, the first time unit may be a time slot, and the third time unit may be 0.5ms K or P time slots, where K and P are integers greater than or equal to 1.

Optionally, if the CP of the current time slot is a CP of the second CP type, such as ECP, and the previous time slot of the current time slot in the time domain is a CP of the first CP type, such as NCP, that is, when the current time slot needs to be switched from NCP to ECP, if normal switching needs to be implemented at this time, a part of the CP length of the current time slot, which is not shorter than the ECP time slot covered by the NCP time slot, may be removed, that is, the CP length is determined according to at least one of the subcarrier interval, the time slot number, and the number of time slots included in each configuration period, such as 0.5ms, so as to implement boundary alignment. Optionally, the subcarrier intervals of the current time slot and the previous time slot of the current time slot may be the same or different, and the present application is not limited thereto. Therefore, the first wireless network equipment can realize time slot level switching from the NCP to the ECP by configuring the CP length of the ECP, thereby avoiding the problem that the switching cannot be carried out due to the fact that boundaries are not aligned when CP types are switched.

Optionally, when switching from the NCP to the ECP, the first wireless network device may use a CP length obtained by a preset rule as the length of the CP of the first time unit, where the CP length obtained by the preset rule is the shortest ECP length in all switching scenarios, and the first time unit may be a time unit corresponding to the first ECP after switching. Therefore, the design complexity can be reduced by configuring the length of the CP of the switched first time unit as the preset CP length.

Further optionally, the CP type and/or CP length included in the CP configuration information may also be predefined, or may be notified to the second wireless network device by the first wireless network device through signaling, which is not limited in this application.

In some possible implementations, the CP configuration information may include a CP type, the CP type being a first CP type or a second CP type; the determining, by the first wireless network device, the CP of the first time unit based on the CP configuration information may specifically be: the first wireless network equipment configures the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information; the first wireless network device configures (e.g., may implement the configuration based on a predefined or signaling configuration or an internal algorithm) the CP of the remaining symbols in the first time unit as the CP of the first CP type or the second CP type, the remaining symbols being symbols other than the M and the N symbols in the first time unit. Wherein, the M and the N are both integers greater than 0, and the sum of the M and the N is not greater than the total number of the symbols included in the first time unit.

Optionally, the CP type indicated by the CP configuration information may be a first CP type, such as NCP; the first wireless network device configures the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, which may specifically be: the first wireless network device configures the CPs of the first M symbols and the last N symbols of the first time unit as CPs of a first CP type.

That is, taking time units as slots as an example, one slot may be all NCP symbols or include NCP and ECP symbols. The first M symbols and the last N symbols in a slot are fixed NCP symbols, and the values of M and N may be predefined or configured by the first radio network device signaling. The remaining symbols may be NCP or ECP, and the CP type of the remaining symbols may be determined by predefined or signaling configuration. Further alternatively, the symbols corresponding to M and N may be used for different channels, i.e. different symbols within a slot may be used for different channels. For example, the first M symbols may be used for a downlink control channel, and the last N symbols may be used for an uplink control channel.

Optionally, the CP type indicated by the CP configuration information may be a second CP type, such as ECP; the first wireless network device configures the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, which may specifically be: the first wireless network device configures the CPs of the last N symbols of the first time unit as CPs of a second CP type.

That is, one slot may be all ECP symbols or include NCP and ECP symbols. The last N symbols in a timeslot are fixed ECP symbols, and the value of N may be predefined or configured by the first radio network device signaling. The remaining symbols may be NCP or ECP, and the CP type of the remaining symbols may be determined by predefined or signaling configuration. Further optionally, the N symbols may be used for an uplink control channel.

Further optionally, in a time slot, symbol information such as a symbol length, a symbol position, a symbol number, a time slot number, and the like of the NCP may be determined according to the NCP symbol information, that is, the symbol information is the same as the symbol information when all NCP symbols are in the time slot; the symbol information such as the symbol length, the symbol position, the symbol number, and the slot number of the ECP may be determined according to the ECP symbol information, that is, the symbol information is the same as the symbol information when all ECP symbols are in the slot. Therefore, the first wireless network device can only have one type of time slot length by fixing the CP types of a plurality of symbols, and the condition that the lengths of the NCP time slot and the ECP time slot are different does not exist, so that the problem of boundary misalignment during CP type switching is solved, and the CP types of the rest symbols in the time slot can be further configured to meet the performance requirement of service data transmission.

In some possible implementations, the CP configuration information may include a CP type; the determining, by the first wireless network device, the CP of the first time unit based on the CP configuration information may specifically be: the first wireless network device determines a location of a first time unit based on the CP type indicated by the CP configuration information; the first wireless network device configures (e.g., implements based on a predefined or signaling configuration or an internal algorithm) the CP of the symbols or the at least one channel within the first time unit to be a CP of the first CP type or the second CP type.

The CP type included in the CP configuration information may be obtained based on a predefined or signaling configuration or an internal algorithm.

Optionally, taking a time unit as a time slot as an example, the position may refer to a time slot position, and the time slot position of the first time unit may be determined by the first wireless network device according to the time slot position of the CP type indicated by the CP configuration information (all time slot positions corresponding to the symbols of the CP type in the time domain).

Further optionally, the determining, by the first wireless network device, the CP of the first time unit based on the CP configuration information may specifically be: the first wireless network device determines a CP of at least one channel or one symbol within the first time unit based on the CP configuration information. That is to say, when the first wireless network device performs CP configuration on the symbols or channels in the time slot based on the determined CP configuration information, the first wireless network device may perform CP configuration (or switching) on only a part of the channels or a part of the symbols in the time slot, and CP types of the remaining channels or symbols may be predefined.

Optionally, the CP type determined by the CP configuration information may be a first CP type, that is, an NCP, and the first wireless network device may determine the time slot position of the first time unit according to the time slot length and the position when all NCP symbols are in the time domain. Or, optionally, the CP type determined by the CP configuration information may be a second CP type, that is, an ECP, and the first wireless network device determines the timeslot position of the first time unit according to the timeslot length and the timeslot position when all the timeslot positions are ECP symbols in the time domain. Further optionally, the first wireless network device may configure the at least one symbol in the first time unit as the first CP type or the second CP type through a predefined or signaling configuration or an internal algorithm, or configure the at least one channel in the first time unit as the first CP type or the second CP type through a predefined or signaling configuration or an internal algorithm, where the CP types of different symbols or different channels may be the same or different, which is not limited in this application. Therefore, the first wireless network equipment can only have one type of time slot length through the CP type of the fixed time slot, and the condition that the lengths of the NCP time slot and the ECP time slot are different does not exist, so that the problem that the boundaries are not aligned when the CP types are switched is solved, and the CP types of other symbols in the time slot can be further configured to meet the performance requirement of service data transmission.

In a second aspect, an embodiment of the present invention further provides a CP determining method, including:

the second wireless network equipment determines CP configuration information, wherein the CP configuration information comprises at least one of CP configuration period, CP type and CP length;

the second wireless network device determines a CP for the first time unit based on the CP configuration information.

In some possible implementations, the CP configuration information may include a CP configuration period and a CP type, the CP configuration period is a predefined or signaling-based configured time length, the time length may be K x milliseconds, and Z time units may be included in the K x milliseconds, that is, the time length may also be described as Z time units. Wherein Z and K may be integers of 1 or more, and x is greater than 0. Alternatively, the x milliseconds may be 0.5 milliseconds (ms), i.e., the CP configuration period may be 0.5ms × K. Further, when the second wireless network device determines the CP type indicated by the CP configuration information, a message sent by the first wireless network device based on the CP configuration period may be received, where the message is used to indicate the CP type.

In some possible implementations, the CP configuration information may include a CP configuration period and a CP type, and the unit of the first time unit is a first time unit; when the CP type is a first CP type, the CP configuration period is at least one first time unit; when the CP type is the second CP type, the CP configuration period is a predefined time length or a time length based on the signaling configuration, for example, the time length may be K0.5 milliseconds, which is not described herein again. Further, when the second wireless network device determines the CP type indicated by the CP configuration information, a message sent by the first wireless network device based on the CP configuration period may be received, where the message is used to indicate the CP type.

Optionally, the message may be sent by the first wireless network device to the second wireless network device by using a second time unit, and the second wireless network device may determine the second time unit based on at least one of the number of the first time units included in one second time unit, the identifier of the second time unit where the second time unit is located, the first offset parameter, and the CP configuration period. The time units of the first time unit and the second time unit are the first time unit, and the length of one second time unit is the same as the length of at least one first time unit; the first offset parameter is used to indicate an offset value of the second time unit within the CP configuration period or a second time unit.

Further optionally, the CP configuration information further includes a second offset parameter. The second wireless network device may determine the second offset parameter based on the identification of the second time unit and the CP configuration period.

Further optionally, the CPs of the time units included in the range from the CP configuration period to the CP configuration period corresponding to the next CP configuration information before can be configured as the CPs of the CP type indicated by the CP configuration information.

Further optionally, the CP configuration period may also be predefined, or the CP configuration period is notified to the second wireless network device by the first wireless network device through signaling, which is not limited in this application.

In some possible implementations, the CP configuration information includes a CP type and a CP length, and the CP type is a second CP type; the CP length is determined based on the subcarrier spacing of the first time unit, the identity of the first time unit, and the number of first time units included in a third time unit. The time unit of the first time unit is a first time unit, and a third time unit includes at least one first time unit, that is, the length of the third time unit is the same as the length of at least one first time unit.

In some possible implementations, the CP configuration information includes a CP type, the CP type being a first CP type or a second CP type; the second wireless network device determines the CP of the first time unit based on the CP configuration information, which may specifically be: the second wireless network equipment determines the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information; the second wireless network device determines (e.g., may be determined based on a predefined or signaling configuration or an internal algorithm) the CP of the remaining symbols in the first time unit as the CP of the first CP type or the second CP type, the remaining symbols being symbols other than the M and the N symbols in the first time unit. Wherein, M and N are integers which are larger than 0, and the sum of M and N is not larger than the total number of symbols included in the first time unit; the values of M and N may be predefined or derived by a signaling configuration (e.g., the first wireless network device signals to the second wireless network device).

Optionally, the CP type indicated by the CP configuration information is a first CP type; the second wireless network device determines the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, which may specifically be: the second wireless network device determines the CP of the first M symbols and the last N symbols of the first time unit as a CP of the first CP type.

Optionally, the CP type indicated by the CP configuration information is a second CP type; the second wireless network device determines the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, which may specifically be: the second wireless network device determines the CPs of the last N symbols of the first time unit as CPs of a second CP type.

In some possible implementations, the CP configuration information includes a CP type; the second wireless network device determines the CP of the first time unit based on the CP configuration information, which may specifically be: the second wireless network device determines the location of the first time unit based on the CP type indicated by the CP configuration information; the second wireless network device determines the CP of at least one symbol or at least one channel in the first time unit corresponding to the position as the CP of the first CP type or the second CP type.

The CP type included in the CP configuration information may be predefined or obtained through signaling configuration.

In some possible implementations, the determining, by the second wireless network device, the CP of the first time unit based on the CP configuration information may specifically be: the second wireless network device determines a CP of at least one symbol or at least one channel within the first time unit based on the CP configuration information.

In a third aspect, the present application further provides a wireless network device, including: the wireless network device implements part or all of the steps of the CP determining method of the first aspect through the first determining module and the second determining module.

In a fourth aspect, the present application further provides a wireless network device, including: the wireless network equipment realizes part or all of the steps of the CP determination method of the second aspect through the first determination module and the second determination module.

In a fifth aspect, the present application further provides a computer storage medium storing a program, where the program includes some or all of the steps of the CP determination method according to the first aspect when executed.

In a sixth aspect, the present application further provides a computer storage medium storing a program, which when executed includes some or all of the steps of the CP determination method of the second aspect.

In a seventh aspect, the present application further provides a wireless network device, including: the system comprises a communication interface, a memory and a processor, wherein the processor is respectively connected with the communication interface and the memory; wherein the content of the first and second substances,

the memory is to store program instructions;

the processor is configured to call program instructions in the memory to perform some or all of the steps of the CP determination method of the first aspect.

In an eighth aspect, the present application further provides a wireless network device, including: the system comprises a communication interface, a memory and a processor, wherein the processor is respectively connected with the communication interface and the memory; wherein the content of the first and second substances,

the memory is to store program instructions;

the processor is configured to call program instructions in the memory to perform some or all of the steps of the CP determination method of the second aspect.

In a ninth aspect, the present application further provides a CP determining system, including a first wireless network device and a second wireless network device; wherein, the first wireless network device is configured to perform part or all of the steps of the CP determining method of the first aspect; the second wireless network device is configured to perform some or all of the steps of the CP determination method of the second aspect.

In the technical scheme provided by the application, the wireless network equipment can perform CP configuration by determining CP configuration information such as CP configuration period, CP type and/or CP length, thereby realizing flexible configuration/switching of the CP type and avoiding the problem of boundary misalignment.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings required to be used in the embodiments or the background art of the present invention will be described below.

Fig. 1 is a schematic diagram of the lengths of time slots of an NCP and an ECP according to an embodiment of the present invention;

fig. 2 is an architecture diagram of a communication system according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a CP determining method according to an embodiment of the present invention;

fig. 4 is a schematic configuration diagram of ECP to NCP handover according to an embodiment of the present invention;

fig. 5 is a schematic configuration diagram of an embodiment of the present invention for switching NCP to ECP;

FIG. 6a is a schematic structural diagram of an ECP and an NCP according to an embodiment of the present invention;

fig. 6b is a CP configuration diagram according to an embodiment of the present invention;

fig. 6c is another CP configuration diagram provided by the embodiment of the present invention;

fig. 7 is a flowchart illustrating another CP determining method according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a wireless network device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of another wireless network device provided in an embodiment of the present invention;

fig. 10 is a schematic structural diagram of another wireless network device according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of another wireless network device according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described below with reference to the drawings.

References to "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to the listed steps or modules but may alternatively include other steps or modules not listed or inherent to such process, method, article, or apparatus.

It should be understood that the technical solution of the present application can be specifically applied to various communication systems, for example: the Global System for Mobile communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (TD-SCDMA), Time Division Synchronous Code Division Multiple Access (UMTS), Long Term Evolution (LTE), etc. with The constant development of Communication Technology, The solution of The present application can also be used in networks, such as The Fifth Generation Mobile Communication Technology (Technology, 5G) or The future Mobile Communication Technology (NR-2), an M2M (machine to machine) system, and so on.

The present application is described in conjunction with a wireless network device, which may be a base station or a terminal. For example, the communication involved in the embodiments of the present invention may be between a base station and a terminal, or between a base station and a base station, such as between a macro base station and a small base station, or between a terminal and a terminal, such as in a D2D network.

In the present application, a terminal (terminal) may refer to a wireless terminal, a wired terminal. The wireless terminal may refer to a device that provides voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem that may communicate with one or more core networks via a Radio Access Network (RAN). For example, the terminal may be a mobile terminal such as a mobile phone (or referred to as a "cellular" phone) and a computer having the mobile terminal, and may also be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device such as a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and the like, which exchange language and/or data with a radio access network. Alternatively, the terminal may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile terminal (Mobile terminal), a Subscriber Unit (SU), a Subscriber Station (SS), a Mobile Station (MS), a Remote Station (RS), an Access Point (AP), a Remote Terminal (english: Remote Terminal; abbreviated RT), an Access Terminal (english: Access Terminal; abbreviated AT), a User Terminal (english: User Terminal; abbreviated UT), a User Agent (english: User Agent; abbreviated UA), a Terminal Device (english: User Device; abbreviated UD), or User Equipment (english: User Equipment; abbreviated UE), etc., which are not limited in this application.

In this application, a base station may refer to a device in an access network that communicates over the air-interface, through one or more sectors, with terminals and that may coordinate management of attributes for the air-interface. For example, the radio access network device may be a base station in GSM or CDMA, such as a Base Transceiver Station (BTS), a base station in WCDMA, such as NodeB, an evolved Node B in LTE, such as eNB or e-NodeB (evolved Node B), a base station in 5G system, such as a transceiver Node (TRP) or G-NodeB (gNB), or a base station in a future network, and the like, and the present application is not limited thereto. Optionally, the base station may also be a relay device, or other network element devices with a function of a base station.

In the following, an application scenario of the present application is introduced, where the first wireless network device is taken as a base station and the second wireless network device is taken as a terminal, that is, communication between the base station and the terminal is taken as an example for description. Referring to fig. 2, fig. 2 is an architecture diagram of a communication system according to an embodiment of the present invention. Specifically, as shown in fig. 2, the communication system includes a base station and a terminal, and the base station and the terminal can communicate using various communication systems, such as a 5G system in the wireless communication system, which can also be referred to as an NR system, and an LTE system, so as to implement information transmission.

A time unit refers to a unit corresponding to a time unit. The Time unit refers to a Time unit or a scheduling unit in a Time domain for information Transmission, the Time unit includes an integer number of symbols in a Time domain, for example, the Time unit may refer to a subframe, a slot (slot), a radio frame, a micro slot (mini slot or sub slot), a plurality of aggregated slots, a plurality of aggregated subframes, a symbol, and the like, and may refer to a Transmission Time Interval (TTI), which is not limited in the present application. For example, one or more time unit time domains of a time unit may include an integer number of time units of another time unit, or one or more time unit time domain lengths of a time unit may be equal to the sum of the time unit lengths of an integer number of another time unit, for example, one micro slot/subframe/radio frame includes an integer number of symbols, one slot/subframe/radio frame includes an integer number of micro slots, one subframe/radio frame includes an integer number of slots, one radio frame includes an integer number of subframes, and the like.

In the present application, a channel may also be called a signal or other names, which is not limited in the present application, and its main function is to perform data transmission, or channel estimation or measurement, or synchronization, etc. between a base station and a terminal, or between a base station and a base station, or between a terminal and a terminal in a physical layer; the pilot may also be called a reference signal or other names, and the present application is not limited thereto, and its main function is that the base station or the terminal performs channel estimation or measurement.

In the present application, NCP and ECP mainly refer to two CP types with different CP overhead, where ECP overhead is greater than NCP, and the CP length of ECP is greater than that of NCP for one subcarrier interval. The NCP and ECP of LTE or 5G are exemplified in the present application, and it is within the scope of the present application when the length of the NCP and ECP is different from that of the present invention.

In this application, unless otherwise specified, an NCP symbol means that the CP type of the symbol is NCP, and an ECP symbol means that the CP type of the symbol is ECP. The NCP time slot or the time slot being NCP means that all symbols in the time slot are NCP symbols, and the ECP time slot or the time slot being ECP means that all symbols in the time slot are ECP symbols. Wherein a slot consists of an integer number of symbols.

In this application, the identification of a time unit may also be referred to as an index or another name of the time unit for distinguishing or marking or counting different time units of a time unit.

When the CP is configured, due to different delay spreads of channels of different terminals, or different parameters such as Modulation and Coding Schemes (MCS) of different terminals or different channels of the same terminal, or different transmission modes, BLER required for transmitted services, or maximum number of times of transmission, the requirements for CP types are different, and therefore, the radio access network device may configure the CP according to at least one channel or at least one symbol in a time unit or a time unit to meet different user requirements.

In this application, the signaling may be high-level information, such as a broadcast message, a system message, a downlink message in an Access process, a Radio Resource Control (RRC) signaling, or a Media Access Control (MAC) ce (Control element), or a physical layer Control signaling. Alternatively, the message may also be physical layer Downlink Control Information (DCI), and the like, which is not limited in this application.

The application discloses a CP (content provider) determining method, wireless network equipment and a system, which can realize flexible configuration/switching of different CP types. The details are described below.

Referring to fig. 3, fig. 3 is a schematic flow chart of a CP determining method according to an embodiment of the present invention, and specifically, as shown in fig. 3, the CP determining method according to the embodiment of the present invention may include the following steps:

101. the first wireless network device determines CP configuration information including at least one of a CP configuration period, a CP type, and a CP length.

102. The first wireless network device determines a CP for the first time unit based on the CP configuration information.

The first wireless network device may be a base station or a terminal, and the present application takes the base station as an example for description.

In an alternative embodiment, the CP configuration information may include a CP configuration period and a CP type, the CP type may be a first CP type or a second CP type, and the CP configuration period is a predefined time length or a time length based on a signaling configuration, the time length may be K x milliseconds, and Z time units may be included in the K x milliseconds. The first CP type may be NCP, the second CP type may be ECP, the time unit may be symbol/minislot/slot/subframe/radio frame ("/" is "or"), and Z and K may be integers greater than or equal to 1. Optionally, x is greater than 0, e.g., x milliseconds may be 0.5 milliseconds. That is, if all time units of the first CP type are within a time domain length corresponding to the CP configuration period (i.e., the time domain length corresponding to the time length), the time units of the first CP type include an integer number of time units of the first CP type, i.e., no time unit of the first CP type spans (exceeds) the start position and the end position (i.e., the boundary) of the time domain length; if all the time units of the second CP type are within a time domain length corresponding to the CP configuration period, the time units of the second CP type include an integer number of time units of the second CP type, that is, no time unit of the second CP type spans the start position and the end position of the time domain length, and a margin is allowed within the time domain length. Further optionally, if there is no space in the time domain length, the total length of the time unit of the first CP type corresponding to the CP configuration period is the same as the total length of the time unit of the second CP type corresponding to the CP configuration period.

Further optionally, after the base station determines the CP configuration period and the CP type, a message for determining the CP type may be sent to the terminal according to the CP configuration period. It can be understood that the base station transmits a message for determining the CP type to the terminal with the CP configuration period as time granularity. Wherein, the CP configuration period may be predefined or signaled, and the CP type may be the message display indication or implicitly determined according to the remaining information carried by the message. Wherein, the display indication may be that the message carries a CP type indication information bit to display and indicate the CP type.

Further alternatively, the base station may send the message to the terminal over the second time unit. The time unit of the first time unit and the time unit of the second time unit is a first time unit, such as the time slot; the second time unit may be determined based on at least one of the number of first time units included in one second time unit, the first offset parameter, and the CP configuration period; a second time unit includes an integer number of the first time units, or a length of the integer number of the first time units and a length equal to a second time unit, for example, the second time unit may be a subframe or a radio frame. Further, the unit of the first offset parameter may be the first time unit or the remaining time units, which is not limited in this application, and the first offset parameter may be predefined or obtained through signaling configuration, which may be used to determine an offset value of the second time unit in the CP configuration period or in a second time unit. Further, the first offset parameter may be 0.

Further optionally, the CP configuration information may further include a second offset parameter, which may be signaled according to a predefined value or a predefined rule or signaling. Optionally, the second offset parameter may also be determined based on the identity of the second time unit and the CP configuration period.

For example, as shown in fig. 1, at a 60kHz subcarrier interval, for example, 7 symbols are included when all symbols per slot are NCP symbols, 6 symbols are included when all symbols per slot are ECP symbols, 4 slots are included every 0.5ms, and the NCP slot and the ECP slot are aligned at the boundary of every 0.5ms, so that the configuration period can be set to 0.5ms × K. That is, the base station may perform CP configuration with a period of 0.5ms × K, and the CP types of the CPs (which may be all the CP in a symbol, a channel, or a timeslot) in every 0.5ms × K are the same, so that the problem of boundary misalignment can be avoided, and flexible configuration or switching of CP types can be realized. Wherein K is a positive integer greater than or equal to 1. Specifically, the base station may send a message to the terminal through the downlink control/data channel at the time slot n1 (i.e., the second time unit), where the message is used to determine the CP type of at least one symbol in the time slot n2 (i.e., the first time unit) or at least one symbol corresponding to the uplink and/or downlink channel/signal (which may be greater than or equal to a different downlink channel) in the time slot n 2. Alternatively, n1 may be n1 satisfying ((n _ subframe _ slot n _ subframe) + n1-n _ offset) mod (n _ period) ═ 0. Wherein, n _ subfram _ slot is the number of slots contained in each subframe (the value may be different for different subcarrier intervals); the n _ subframe is the subframe number corresponding to n 1; n _ offset is a high-level signaling or a preconfigured offset slot, and the value range may be 0-n _ subfram _ slot-1, which is the first offset parameter; n _ period is the number of slots (i.e., the first time unit) included in the CP configuration period, i.e., the number of slots included in the 0.5ms × K.

Further, n2 is n1+ L, where L is the second offset parameter, and L is an integer greater than or equal to 0, and is a predefined value, or a value obtained based on a predefined rule, or configured through signaling. Further, when the value of N1 is started from Y (Y is an integer equal to or greater than 0, for example, 0), L is a value satisfying ((N _ subframe _ slot _ N _ subframe) + N1+ L) mod (N _ period) ═ 0, or N2 is a flag corresponding to the first slot of the next 0.5ms N corresponding to the system timing after N1. The description of n _ subframeslot, n _ subframe and n _ period is the same as that in the previous paragraph, and is not repeated here.

Further optionally, the CPs of the time units included in the range from the CP configuration period to the CP configuration period corresponding to the next CP configuration information before may also be configured as CPs of the CP type indicated by the CP configuration information. That is, the CP types of all the timeslots in the previous timeslot of n2 from the timeslot corresponding to this time n2 to the timeslot corresponding to the next time CP configuration signaling is received may be the same as the CP type of the current n2 timeslot, that is, the periodic CP configuration is implemented with low system overhead.

Optionally, the message may be high-level information, such as a broadcast message, a system message, a downlink message in an Access process (e.g., message 2 or message 4), Radio Resource Control (RRC) signaling, or Media Access Control (MAC) ce (Control). Or, the message may also be physical Downlink Control Information (DCI), that is, the CP configuration Information may be carried by a physical channel, and the physical channel may be a physical Downlink Control channel, and the like, which is not limited in this application.

Further optionally, the base station determines the CP of the first time unit based on the CP configuration information, which may specifically be: the base station determines a CP of at least one channel within a first time unit based on the CP configuration information. That is, when the base station performs CP configuration based on the determined CP configuration information, the base station may perform CP configuration (or switching) on only a part of channels in the timeslot, and CP types of the remaining channels may be predefined. For example, the base station may configure the data channel and the CP of the demodulation reference signal as a first CP type or a second CP type, and the CP types of the remaining channels are predefined as the first CP type or the second CP type (the predefined types of different channels may be different).

In the embodiment of the present invention, the base station may perform CP configuration by determining a CP configuration period and a CP type, so that the CP types in each CP configuration period are the same as each other, for example, within 0.5ms × K, thereby avoiding a problem of boundary misalignment and realizing flexible configuration/switching of CP types at a level of 0.5 ms. Furthermore, as the current time slots of different CP types are aligned at the boundary of 0.5ms K instead of the boundary of each time slot, the times of CP switching are reduced, messages indicating CP configuration information do not need to be sent at each time slot, the number of messages in the system is reduced, and the signaling overhead of the system is reduced.

In an alternative embodiment, the CP configuration information may include a CP configuration period and a CP type, and the CP type may be a first CP type or a second CP type. Specifically, the base station may determine the CP configuration period according to the CP type. The unit of the first time unit may be a first time unit.

Optionally, when the CP type is a first CP type, that is, the CP is configured with at least one first time unit (for example, a symbol/slot/subframe) in a period; when the CP type is the second CP type, that is, ECP, the CP configuration period is a predefined time length or a time length configured based on signaling, and the time length may be K x milliseconds, and Z time units may be included in the K x milliseconds. The time unit may be a symbol/slot/subframe, Z and K may be integers greater than or equal to 1, and x is greater than 0, for example, may be 0.5. So that the base station can configure the CP of the time unit in the CP configuration period in which the first time unit is located as the CP of the CP type indicated by the CP configuration information.

When the CP type is the second CP type, that is, the ECP, the configuration method and the determination method of the CP may refer to the related description of the foregoing embodiments, and are not described herein again. The following mainly describes a CP configuration and determination method when the CP type is NCP.

Further alternatively, the base station may send the message to the terminal over the second time unit. The time unit of the first time unit and the time unit of the second time unit is a first time unit, such as the time slot; the second time unit may be determined based on at least one of the number of first time units included in one second time unit, the first offset parameter, and the CP configuration period; a second time unit includes an integer number (greater than or equal to 1) of the first time units, or a length of the integer number of the first time units and a length equal to a second time unit, for example, the second time unit may be a subframe or a radio frame. Further, the unit of the first offset parameter may be the first time unit or the remaining time units, and the application is not limited thereto, and the first offset parameter may be predefined or configured through signaling, and functions to indicate an offset value of the second time unit in the CP configuration period or a second time unit. Further, the first offset parameter may be 0.

Further optionally, the CP configuration information may further include a second offset parameter, which may be predefined or signaled, or may be determined based on the identification of the second time unit and the CP configuration period.

Specifically, as can be seen from analyzing the slot lengths of the NCP and the ECP, when the slot boundaries are not aligned, mainly when switching from the NCP to the ECP, a part of the slot portion of the NCP exceeds the start of the ECP, so that the NCP cannot be normally switched to the ECP. Therefore, when switching from ECP to NCP is needed, the embodiment of the invention can directly take an integer number of time slots as a configuration period, thereby realizing flexible switching from ECP to NCP.

For example, the base station may send a message to the terminal through the downlink control/data channel at the time slot n1 (i.e., the second time unit), the message being used to determine that the CP corresponding to at least one uplink and/or downlink channel/signal (which may be greater than or equal to one different downlink channel) of the time slot n2 (i.e., the first time unit) or the time slot n2 is configured as NCP. Alternatively, n1 may satisfy ((n _ subframe _ slot n _ subframe) + n1-n _ offset) mod (n _ period) ═ 0 to determine n 1. Wherein n _ period is a CP configuration period, which may be an integer number of timeslots, and the rest of the parameters may refer to the description related to the above embodiments, which is not described herein again.

Further, n2 ═ n1+ L, L is an integer greater than or equal to 0, and the value of L can be predefined or configured through signaling. That is, n2 may be the number of slots of the slot interval L slots corresponding to n 1. When L is 0, n2 is the same slot as slot n 1. Further optionally, the CPs of the time units included in the range from the CP configuration period to the CP configuration period corresponding to the next CP configuration information before may also be configured as CPs of the CP type indicated by the CP configuration information. That is, the CP types of all the time slots in the previous time slot of n2 corresponding to the CP configuration signaling from the current time slot n2 to the next time are the same as the CP type of the current time slot n 2.

Further, when NCP and ECP exist simultaneously within a period of time, for example, 0.5ms, the time slot/symbol time domain position of the NCP is the same as the time slot/symbol time domain position when the symbols within the period are all NCP symbols, and the time slot/symbol time domain position of the ECP is the same as the time slot/symbol time domain position when the symbols within the period are all ECP symbols. Wherein a slot consists of an integer number of symbols.

Optionally, the message may be high-level information or control information, and the like, and specific reference may be made to the description of the relevant message in the foregoing embodiment, which is not described herein again.

For example, as shown in fig. 4, it is a CP configuration diagram for ECP to NCP, which can implement ECP to NCP switching in different time slots within 0.5 ms. Within 0.5ms, the time domain position of the time slot/symbol of the NCP is the same as the time domain position of the time slot/symbol of the time period when the NCP symbol is used, and the time domain position of the time slot/symbol of the ECP is the same as the time domain position of the time slot/symbol of the time period when the ECP symbol is used. Further, when switching from ECP to NCP, the extra resources in the ECP timeslot and the NCP timeslot may be used to implement functions such as a guard period, beam switching, and measurement, and further, the part of extra resources may also be categorized as the ECP timeslot or the NCP timeslot, which is not limited in the embodiment of the present invention.

In the embodiment of the invention, when switching from ECP to NCP, the base station can use the time slot as the configuration period to realize the switching of the CP type at the time slot level, thereby avoiding the problem of boundary misalignment and improving the flexibility of CP configuration.

In an optional embodiment, the CP configuration information includes a CP type and a CP length, and the CP type is a second CP type; the CP length may be determined by the base station according to the subcarrier interval of the first time unit, the identifier of the first time unit, and the number of time units corresponding to the first time unit included in one third time unit. The time unit of the first time unit is a first time unit, and one third time unit in the time domain includes an integer number of the first time units, or the sum of the lengths of the integer number of the first time units in the time domain is equal to the length of one third time unit. For example, the first time unit may be the above-mentioned time slot, and the third time unit may be 0.5ms × K or P time slots, where K and P are integers greater than or equal to 1.

Specifically, it can be seen from analyzing the slot lengths of the NCP and the ECP that when the slot boundaries are not aligned, mainly when switching from the NCP to the ECP, a part of the NCP slot portion exceeds the start of the ECP, and thus the NCP cannot be normally switched to the ECP. The embodiment of the invention can directly take an integer number of time slots as a configuration period to realize the flexible switching of the CP type, including the switching from NCP to ECP or the switching from ECP to NCP. For the scenario of switching NCP to ECP, assuming that the current timeslot is ECP and the previous timeslot of the current timeslot in the time domain is NCP, that is, when it is required to switch from NCP to ECP, if normal switching needs to be implemented at this time, a part of CP or symbol length of the ECP timeslot not shorter than the NCP timeslot in the current timeslot may be discarded, that is, the CP length is determined according to at least one of the subcarrier interval, timeslot number, and timeslot number included in each configuration period, for example, 0.5 ms. Optionally, the subcarrier intervals of the current time slot and the previous time slot of the current time slot may be the same or different, and the embodiment of the present invention is not limited.

In the following, taking carrier frequencies below 60kHz (i.e. subcarrier spacing), 20MHz bandwidth, and a sampling rate of 30.72MHz (taking Ts as a sampling point) as an example, under the NCP type, the symbol length and CP length corresponding to each subcarrier spacing are as shown in the following table one:

watch 1

Similarly, taking carrier frequencies below 60kHz (i.e. subcarrier spacing), 20MHz bandwidth, and a sampling rate of 30.72MHz (taking Ts as a sampling point) as an example, under the ECP type, the symbol length and CP length corresponding to each subcarrier spacing are shown in the following table two:

watch two

As shown in fig. 5, taking {60kHz subcarrier spacing, 20MHz bandwidth, 30.72MHz sampling rate, NCP and ECP configuration in table one and table two } as an example, the ECP lengths determined when different timeslots are switched from NCP to ECP within 0.5ms are below, where N _ sot is the number of timeslots included in each 0.5ms (N _ sot is 4 in fig. 5, and is slot0, slot1, slot2, and slot3), and the identifier of the current timeslot is N:

when (N) mod N _ sot is 0, the CP length of the first symbol of the ECP is 128 Ts. Wherein 128 is equal to the original ECP CP length, as can be seen from table two above. That is, if the slot n to be switched is slot0 which is the first slot in 0.5ms, the CP configuration is performed with the original length of the ECP. Further, before the next switching of CP types, the ECPs of the remaining slots perform CP configuration with the original length, for example, the CP lengths of the

slots

1, 2, and 3 are 128Ts (corresponding to the slot length of 0.125 ms).

When (N) mod N _ sot ═ a (a ═ 1), the CP length of the first symbol of the ECP is 116Ts (corresponding to a slot length of about 0.12461 ms). Where 116 is 128-16/N _ sot (N _ sot-a), 128 is equal to the CP length of the original ECP corresponding to 60kHz, and 16 is a sampling rate 16/30.72 MHz. That is, when the slot n required to be switched from NCP to ECP is slot1(slot0 is NCP) which is the second slot within 0.5ms, the CP configuration is performed with 116Ts, that is, the CP length of 12Ts needs to be cut. Further, before switching the CP type next time, the ECPs of the remaining slots perform CP configuration with the original length, and the CP lengths of the

slots

2 and 3 are 128 Ts.

When (N) mod N _ sot ═ a (a ═ 2), the CP length of the first symbol of the ECP is 120 Ts. Wherein 120 ═ 128-16/N _ sot (N _ sot-a), 128 is equal to the CP length of the original ECP corresponding to 60kHz, and 16 ═ sampling rate 16/30.72 MHz. That is, when the timeslot n required to be switched from NCP to ECP is the third timeslot within 0.5ms, i.e. slot2, the CP configuration is performed with 120Ts, i.e. the CP length of 8Ts needs to be cut. Further, before switching the CP type next time, the ECPs of the remaining slots perform CP configuration with the original length, and the CP length of the slot3 is 128 Ts.

When (N) mod N _ sot ═ a (a ═ 3), the CP length of the first symbol of the ECP is 124 Ts. Where 124 ═ 128-16/N _ sot (N _ sot-a), 128 is equal to the CP length of the original ECP corresponding to 60kHz, and 16 ═ sample rate 16/30.72 MHz. That is, when the timeslot n required to be switched from NCP to ECP is the slot3 which is the fourth timeslot within 0.5ms, CP configuration is performed with 124Ts, that is, the CP length of 4Ts needs to be cut.

Optionally, when switching from NCP to ECP, the base station may use a CP length obtained by a preset rule as the length of the CP of the first time unit, where the CP length obtained by the preset rule is the shortest ECP length in all switching scenarios, and the first time unit may be a time unit corresponding to the first ECP after switching. Therefore, whether the CP lengths of the switched first time unit are configured to be the same value or not can be achieved, and the design complexity is reduced. For another example, taking {60kHz subcarrier spacing, 20MHz bandwidth, 30.72MHz sampling rate, NCP and ECP configuration in table one and table two } as an example, the ECP length determined when different slots are switched from NCP to ECP within 0.5ms, where N _ sot is the number of slots included in each 0.5ms (N _ sot is 4 in fig. 5, slot0, slot1, slot2, and slot3), the current slot is ECP, the identifier of the slot is N, and when the previous slot of the current slot is NCP, the CP length of the first symbol of the current slot is determined according to the subcarrier spacing. That is, for the sake of simplicity of design, the ECP lengths of the first symbol in the 4 cases may be the same, e.g. all 116Ts, i.e. the shortest ECP length of the 4 cases is selected.

For another example, taking {60kHz subcarrier spacing, 20MHz bandwidth, 30.72MHz sampling rate, 0.5ms including 2 slots, NCP and ECP configuration of table one and table two } as an example, the following are CP lengths when ECP is switched from NCP to ECP in different slots within 0.5ms, that is, the current slot n is ECP, and the previous slot of the current slot is NCP:

when (N) mod N _ sot is 0, the CP length of the first symbol of the ECP is 128 Ts. Wherein, 128 ═ 128-16/N _ sot (N _ sot-0), 16 ═ 16/30.72MHz sampling rate, 128 is the original CP length of ECP corresponding to 60 kHz.

When (N) mod N _ sot ═ a (a ═ 1), the CP length of the first symbol of the ECP is 120 Ts. Wherein, 116 ═ 128-16/N _ sot (N _ sot-a), 16 ═ 16/30.72MHz sampling rate, 128 is the original CP length of ECP corresponding to 60 kHz.

For another example, taking {30kHz subcarrier spacing, 20MHz bandwidth, 30.72MHz sampling rate, 0.5ms including 2 slots, NCP and ECP configuration of table one and table two } as an example, the following are CP lengths when ECP is switched from NCP to ECP in different slots within 0.5ms, that is, the current slot n is ECP, and the previous slot of the current slot is NCP:

when (N) mod N _ sot is 0, the CP length of the first symbol of the ECP is 256 Ts. 256-16/N _ sot (N _ sot-0), 16-sampling rate 16/30.72MHz, 256 is the original CP length of ECP corresponding to 60 kHz.

When (N) mod N _ sot ═ a (a ═ 1), the CP length of the first symbol of the ECP is 248 Ts. Wherein 248 is 256-16/N _ sot (N _ sot-a), 16 is a sampling rate 16/30.72MHz, and 256 is the original CP length of ECP corresponding to 60 kHz.

In the embodiment of the invention, the base station can realize the time slot level switching from the NCP to the ECP by configuring the CP length of the ECP, thereby avoiding the problem that the switching cannot be carried out due to the non-aligned boundaries during the CP type switching.

In an alternative embodiment, the CP configuration information may include a CP type, and the CP type is a first CP type or a second CP type. The base station determines the CP of the first time unit based on the CP configuration information, which may specifically be: the base station configures the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type determined by the CP configuration information; the base station configures the CPs of the remaining symbols in the first time unit as CPs of the first CP type or the second CP type. The rest symbols are symbols in the first time unit except the M and N symbols, both M and N are integers greater than 0, and the sum of M and N is not greater than the total number of symbols included in the first time unit.

Optionally, the CP type determined by the CP configuration information may be a first CP type, that is, an NCP. The base station configures the CPs of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type determined by the CP configuration information, which may specifically be: the base station configures the CPs of the first M symbols and the last N symbols of the first time unit as CPs of a first CP type.

That is, one slot may be all NCP symbols or include both NCP and ECP symbols. Wherein, the first M symbols and the last N symbols in a slot are fixed NCP symbols, and the values of M and N can be predefined (for example, 1 or 2, M and N can be configured independently) or configured by base station signaling. The remaining symbols may be NCP or ECP, and the CP type of the remaining symbols may be determined by predefined or signaling configuration.

Optionally, in a time slot, symbol information such as a symbol length, a symbol position, a symbol number, a time slot number, and the like of the NCP may be determined according to the NCP symbol information, that is, the symbol information is the same as the symbol information when all NCP symbols are in the time slot; the symbol information such as the symbol length, the symbol position, the symbol number, and the slot number of the ECP may be determined according to the ECP symbol information, that is, the symbol information is the same as the symbol information when all ECP symbols are in the slot.

For example, as shown in fig. 6a, it is a schematic diagram of symbol comparison between ECP and NCP provided by the embodiment of the present invention, wherein when all ECP symbols are in a slot, a slot includes 6 symbols, and the numbers are 0 to 5 respectively; when all the NCP symbols are in the time slot, one time slot comprises 7 symbols, and the numbers are respectively 0-6. Further, as shown in fig. 6b, assuming that M and N both take 1, the base station may fixedly configure the CP of the previous symbol and the next symbol in the time slot as NCP, that is, take symbol 0 and symbol 6 in the NCP configuration as the symbols of the fixed CP type, and the symbol number is the same as the symbol number when all NCPs are in the time slot; the CP types of the remaining symbols can be configured as NCP or ECP arbitrarily, for example, all as ECP, as shown in fig. 6b, and the remaining symbols include symbols 1-4 configured as ECP, and the symbol numbers thereof are the same as those of all ECP symbols in the slot. Therefore, the fixed time slot length can be realized by fixing the type of the first M symbols and the last N symbols of the time slot as NCP, thereby solving the problem of boundary misalignment during CP type switching.

Further optionally, since the MCS of a part of physical channels such as control channels is relatively low, even in a large delay spread scenario, no significant performance degradation is caused by using a short CP, and therefore, the symbols corresponding to M and N may also be used for different channels, that is, different symbols in a slot may be used for different channels. For example, the first M symbols may be included for a downlink control channel, the last N symbols may be included for an uplink control channel, and the remaining symbols may be included for a data channel.

Optionally, the CP type indicated by the CP configuration information may also be a second CP type, that is, an ECP. The base station configures the CPs of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, which may specifically be: the base station configures the CPs of the last N symbols of the first time unit as CPs of the second CP type.

That is, one slot may be all ECP symbols or include NCP and ECP symbols. The last N symbols in a timeslot are fixed ECP symbols, and the value of N may be predefined or configured by base station signaling. The remaining symbols may be NCP or ECP, the CP type of the remaining symbols may be specifically determined by predefined or signaling configuration, and symbol information such as symbol length, symbol position, symbol number, and slot number in one slot is determined according to symbol information of the CP type corresponding to the symbol, that is, the symbol information is the same as symbol information when all the CP type symbols are in the slot, and details are not described here.

Optionally, the ECP may be introduced because the CP is sensitive to the high MCS in a large delay spread scenario, that is, the CP cannot cover the delay requirement and the performance is significantly reduced when the MCS is higher, and the data channel is mainly used for the high MCS, so that it is not necessary to configure each channel in a time slot or all symbols corresponding to one channel as the ECP. For example, as shown in fig. 6c, please refer to fig. 6a, assuming that N is 1, the base station may fixedly configure the CP of the last symbol in the timeslot as ECP, that is, the symbol 5 in ECP configuration is taken as the symbol of the fixed CP type, and the symbol number is the same as the symbol number in ECP only; the CP types of the remaining symbols may be arbitrarily configured, such as all configured as NCP, and the remaining symbols include symbols 0-4 configured as NCP, which have the same symbol number as NCP only. Therefore, the fixed time slot length can be realized by using the type of the N symbols after the fixed time slot as ECP, and the problem of boundary misalignment during CP type switching can be solved.

Further optionally, the N symbols may be used for an uplink control channel.

In the embodiment of the invention, the base station can only make the length of the time slot be one type by fixing the CP types of a plurality of symbols, and the condition that the lengths of the NCP time slot and the ECP time slot are different does not exist, thereby solving the problem of the non-alignment of the boundary when the CP types are switched, and further meeting the performance requirement of service data transmission by configuring the CP types of the rest symbols in the time slot.

In an alternative embodiment, the CP configuration information may include a CP type, and the CP type is a first CP type or a second CP type. The base station determines the CP of the first time unit based on the CP configuration information, which may specifically be: the base station determines the position of a first time unit based on the CP type indicated by the CP configuration information, namely the first time unit is the CP type time unit, namely the position of the first time unit is the same as the position when all the CP type symbols are in the time unit; the base station configures the CP of the symbol included in the first time unit as a CP of a first CP type or a CP of a second CP type, where the CPs of different symbols may be different or the same, and the present application is not limited thereto. Optionally, the position may refer to a time slot position, and the time slot position of the first time unit may be determined by the base station according to the time slot position of the CP type indicated by the CP configuration information (all time slot positions corresponding to the CP type symbol in the time domain) and the time slot length of the CP type.

Further optionally, the ECP is mainly used in a large delay spread scenario and an application scenario with a higher MCS, otherwise, the transmission performance of the NCP and the ECP is not much different, and the data transmission conforming to the characteristics is mainly used for transmitting a user-level data channel. For one or more of the synchronization signal, the broadcast channel, the data channel for transmitting the system or common messages, the control channel, the access channel, and even the pilot channel or the reference signal, because the MCS is low, the performance requirement can be satisfied by using only one CP type without performing the switching between NCP and ECP. That is, the CP type need not be configurable/switchable for all resources within a slot. Therefore, the base station may configure the symbols in the first time unit to be the first CP type or the second CP type through a predefined or signaling configuration (the CP types of different symbols may be different or the same, which is not limited in this application), or configure at least one channel in the first time unit to be the first CP type or the second CP type through a predefined or signaling configuration (the CP types of different channels may be different).

Optionally, the CP type determined by the CP configuration information may be a first CP type, that is, an NCP. The base station may determine the slot position of the first time unit based on the length and position of the time slot when all NCP symbols are in the time domain. Further, the base station may configure the symbols in the first time unit determined by the slot position as the first CP type or the second CP type through a predefined or signaling configuration, or configure at least one channel in the time unit as the first CP type or the second CP type through a predefined or signaling configuration (CP types of different channels may be different).

Optionally, the CP type determined by the CP configuration information may be a second CP type, that is, an ECP. The base station may determine the slot position of the first time unit based on the length and position of the time slot when all ECP symbols are in the time domain. Further, the base station may configure the symbols in the first time unit determined by the slot position as the first CP type or the second CP type through a predefined or signaling configuration, or configure at least one channel in the time unit as the first CP type or the second CP type through a predefined or signaling configuration (CP types of different channels may be different).

Optionally, since the MCS of the control channel is relatively low, even in a large delay spread scenario, no significant performance degradation is caused by using the short CP, so that the control channel or the synchronization channel or the broadcast channel in the first time unit may also be configured as an NCP, and the data channel or the pilot channel may be configured as an ECP.

In the embodiment of the invention, the base station can only make the length of the time slot be one type by fixing the CP types of a plurality of symbols or the types of the fixed time slots, and the condition that the lengths of the NCP time slot and the ECP time slot are different does not exist, thereby solving the problem of the non-alignment of the boundary when the CP types are switched, and further meeting the performance requirement of service data transmission by configuring the CP types of the rest symbols in the time slot.

Referring to fig. 7, fig. 7 is a schematic flow chart of another CP determining method according to an embodiment of the present invention, and specifically, as shown in fig. 7, the CP determining method according to the embodiment of the present invention may include the following steps:

201. the second wireless network device determines CP configuration information including at least one of a CP configuration period, a CP type, and a CP length.

202. The second wireless network device determines a CP for the first time unit based on the CP configuration information.

The second wireless network device may be a terminal or a base station, and this application takes the terminal as an example for description.

In an alternative embodiment, the CP configuration information may include a CP configuration period and a CP type, the CP configuration period is a predefined or signaling-configured time length, the time length may be K x milliseconds, and the K x milliseconds may include Z time units, the time units may be symbols/minislots/slots/subframes/radio frames, and the like. Wherein Z and K may be integers of 1 or more. Optionally, x is greater than 0, e.g., x milliseconds may be 0.5 milliseconds.

In an alternative embodiment, the CP configuration information may include a CP configuration period and a CP type, and the unit of the first time unit is a first time unit; when the CP type is the first CP type, the CP configuration period may be at least one first time unit; when the CP type is the second CP type, the CP configuration period is a predefined time length or a time length based on the signaling configuration, for example, the time length may be K0.5 milliseconds, which is not described herein again.

Further optionally, the manner in which the terminal determines the CP type indicated by the CP configuration information may be that the terminal receives a message sent by the base station based on the CP configuration period, where the message is used to indicate the CP type. The CP configuration period may be predefined or signaled by the base station, and the CP type may be the message display indication or implicitly determined according to the remaining information carried by the message. Wherein, the display indication may be that the message carries a CP type indication information bit to display and indicate the CP type.

Specifically, the manner in which the terminal determines the CP configuration information and determines the CP of the first time unit based on the CP configuration information may refer to the above-mentioned base station to determine the CP configuration information and determine the description related to the CP of the first time unit based on the CP configuration information, which is not described herein again. Therefore, the terminal and the base station can determine the CP by determining CP configuration information such as CP configuration period, CP type and/or CP length, so as to realize flexible configuration/switching of the CP type and avoid the problem of boundary misalignment.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a wireless network device according to an embodiment of the present invention. Specifically, as shown in fig. 8, the wireless network device according to the embodiment of the present invention may include a first determining module 11 and a second determining module 12. Wherein the content of the first and second substances,

the first determining module 11 is configured to determine CP configuration information, where the CP configuration information includes at least one of a CP configuration period, a CP type, and a CP length;

the second determining module 12 is configured to determine a CP of the first time unit based on the CP configuration information.

In an optional embodiment, the CP configuration information includes a CP configuration period and a CP type, the CP configuration period is a predefined or signaling-configuration-based time length, and the time length may be K x milliseconds, and Z time units may be included in the K x milliseconds. Wherein Z and K may be integers of 1 or more. Optionally, x is greater than 0, e.g., x milliseconds may be 0.5 milliseconds.

In an optional embodiment, the CP configuration information includes a CP configuration period and a CP type, and the unit of the first time unit is a first time unit; when the CP type is a first CP type, the CP configuration period is at least one first time unit; when the CP type is the second CP type, the CP configuration period is a predefined time length or a time length based on the signaling configuration, such as K times of 0.5ms, which is not described herein again.

Further optionally, the wireless network device may further include:

a communication module 13, configured to send a message to another wireless network device according to the CP configuration period, where the message is used to indicate the CP type.

The message may be sent by the wireless network device to the another wireless network device by a second time unit, and the second time unit is determined based on at least one of the number of first time units included in one second time unit, the first offset parameter, and the CP configuration period. The time units of the first time unit and the second time unit are the first time unit, and one second time unit comprises at least one first time unit; the first offset parameter is used to determine an offset value of the second time unit within the CP configuration period or a second time unit.

Further optionally, the CP configuration information further includes a second offset parameter; wherein the second offset parameter is determined based on at least one of an identity of the second time unit and the CP configuration period, or the second offset parameter may be predefined or configured through signaling.

Further optionally, the CPs of the time units included in the range from the CP configuration period to the CP configuration period corresponding to the next CP configuration information are all configured as the CPs of the CP type indicated by the CP configuration information.

In an optional embodiment, the CP configuration information includes a CP type and a CP length, and the CP type is a second CP type; the CP length is determined based on the subcarrier spacing of the first time unit, the identity of the first time unit, and the number of first time units included in a third time unit. Wherein the time unit of the first time unit is a first time unit, and one of the third time units includes at least one of the first time units.

In an optional embodiment, the CP configuration information includes a CP type, and the CP type is a first CP type or a second CP type; the second determining module 12 may specifically be configured to:

configuring the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information; wherein both M and N are integers greater than 0, and the sum of M and N is not greater than the total number of symbols included in the first time unit;

configuring the CPs of the remaining symbols in the first time unit as CPs of the first CP type or the second CP type, wherein the remaining symbols are symbols other than the M and the N symbols in the first time unit.

Optionally, the CP type indicated by the CP configuration information is a first CP type; the second determining module 12, when performing the configuration of the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, is specifically configured to: configuring the CPs of the first M symbols and the last N symbols of the first time unit as CPs of a first CP type.

Optionally, the CP type indicated by the CP configuration information is a second CP type; when the second determining module 12 performs the step of configuring the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, specifically, the step is to: and configuring the CP of the last N symbols of the first time unit as the CP of the second CP type.

In an alternative embodiment, the CP configuration information includes a CP type; the second determining module 12 may specifically be configured to:

determining a location of a first time unit based on a CP type indicated by the CP configuration information;

and configuring the CP of the symbols or at least one channel in the first time unit corresponding to the position as the CP of the first CP type or the CP of the second CP type.

Further optionally, the second determining module 12 may be specifically configured to:

determining a CP of at least one channel within a first time unit based on the CP configuration information.

That is, the CP configuration information may be used to determine a CP configuration of at least one symbol or one channel in a first time unit.

The wireless network device may be a base station or a terminal; the other wireless network device may be a terminal or a base station. Optionally, the wireless network device may implement, through the module, part or all of the steps performed by the base station in the CP determining method in the embodiment corresponding to fig. 3 to fig. 7. It should be understood that the embodiments of the present invention are device embodiments corresponding to method embodiments, and the description of the method embodiments also applies to the embodiments of the present invention.

Referring to fig. 9, fig. 9 is a schematic structural diagram of another wireless network device according to an embodiment of the present invention. Specifically, as shown in fig. 9, the wireless network device according to the embodiment of the present invention includes a first determining module 21 and a second determining module 22. Wherein the content of the first and second substances,

the first determining module 21 is configured to determine CP configuration information, where the CP configuration information includes at least one of a CP configuration period, a CP type, and a CP length;

the second determining module 22 is configured to determine the CP of the first time unit based on the CP configuration information.

In an optional embodiment, the CP configuration information includes a CP configuration period and a CP type, where the CP configuration period is a preset time length, a unit of the first time unit is a first time unit, and the preset time length includes at least two first time units; the first determining module 21, when determining the CP type, may specifically be configured to:

and receiving a message sent by another wireless network device according to the CP configuration period, wherein the message is used for indicating the CP type.

In an optional embodiment, the CP configuration information includes a CP configuration period and a CP type, and the unit of the first time unit is a first time unit;

when the CP type is a first CP type, the CP configuration period is at least one first time unit;

when the CP type is a second CP type, the CP configuration period is a preset time length, and the preset time length comprises at least two first time units;

the first determining module 21, when determining the CP type, may specifically be configured to:

The wireless network device may be a terminal or a base station; the other wireless network device may be a base station or a terminal.

Optionally, the message may be sent by the wireless network device to the another wireless network device by a second time unit, and the second wireless network device may determine the second time unit based on at least one of the number of first time units included in one second time unit, an identifier of a second time unit in which the second time unit is located, the first offset parameter, and the CP configuration period. The time units of the first time unit and the second time unit are the first time unit, and the length of one second time unit is the same as the length of at least one first time unit; the first offset parameter is used to indicate an offset value of the second time unit within the CP configuration period or a second time unit.

Further optionally, the CP configuration information further includes a second offset parameter. The wireless network device may determine the second offset parameter based on the identity of the second time unit and the CP configuration period.

Further optionally, the CP configuration period may also be predefined, or may be notified to the wireless network device by another wireless network device through signaling, which is not limited in this application.

Further optionally, the CP type and/or CP length included in the CP configuration information may also be predefined, or may be notified to the wireless network device by another wireless network device through signaling, which is not limited in this application.

In some possible implementations, the CP configuration information includes a CP type, the CP type being a first CP type or a second CP type; the second determining module 22 may be specifically configured to: determining the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information; determining (such as may be determined based on a predefined or signaling configuration or an internal algorithm) the CP of the remaining symbols in the first time unit as the CP of the first CP type or the second CP type, the remaining symbols being symbols other than the M and the N symbols in the first time unit. Wherein, M and N are integers which are larger than 0, and the sum of M and N is not larger than the total number of symbols included in the first time unit; the values of M and N may be predefined or configured by signaling.

Optionally, the CP type indicated by the CP configuration information is a first CP type; when the second determining module 22 determines the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, the determining may specifically be: determining the CP of the first M symbols and the last N symbols of the first time unit as the CP of the first CP type.

Optionally, the CP type indicated by the CP configuration information is a second CP type; when the second determining module 22 determines the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, the determining may specifically be: and determining the CP of the last N symbols of the first time unit as the CP of the second CP type.

In some possible implementations, the CP configuration information includes a CP type; the second determining module 22 determines the CP of the first time unit based on the CP configuration information, which may specifically be: determining a location of a first time unit based on the CP type indicated by the CP configuration information; determining a CP of at least one symbol or at least one channel within the first time unit as a CP of the first CP type or the second CP type.

In some possible implementations, the second determining module 22 determines the CP of the first time unit based on the CP configuration information, which may specifically be: a CP of at least one symbol or at least one channel within the first time unit is determined based on the CP configuration information.

Optionally, the wireless network device may implement, through the module, part or all of the steps performed by the terminal in the CP determining method in the embodiment corresponding to fig. 3 to fig. 7. It should be understood that the embodiments of the present invention are device embodiments corresponding to method embodiments, and the description of the method embodiments also applies to the embodiments of the present invention.

Referring to fig. 10, fig. 10 is a schematic structural diagram of another wireless network device according to an embodiment of the present invention. Specifically, as shown in fig. 10, the wireless network device according to the embodiment of the present invention may include: a communication interface 300, a memory 200 and a processor 100, wherein the processor 100 is connected to the communication interface 300 and the memory 200 respectively.

The communication interface 300, the memory 200 and the processor 100 may be connected by a bus, or may be connected by other methods. In this embodiment, a bus connection is described.

The Processor 100 may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of CPU and NP.

The processor 100 may further include a hardware chip. The hardware chip may be an Application-Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a Field-Programmable Gate Array (FPGA), General Array Logic (GAL), or any combination thereof.

The Memory 200 may include a Volatile Memory (english: Volatile Memory), such as a Random-Access Memory (RAM); the memory may also include a non-volatile memory (english: non-volatile memory), such as a flash memory (english: flash memory), a Hard Disk (english: Hard Disk Drive, abbreviated HDD) or a Solid-State Drive (english: Solid-State Drive, abbreviated SSD); the memory 200 may also comprise a combination of memories of the kind described above.

The wireless network device may be a base station or a terminal. Optionally, the memory 200 may be used for storing program instructions, and the processor 100 calls the program instructions stored in the memory 200 to execute one or more steps in the embodiments shown in fig. 3 to fig. 7, or an alternative embodiment thereof, so that the wireless network device implements the functions in the above-mentioned method. For example, the wireless network device may implement, through the modules, part or all of the steps performed by the base station in the CP determining method in the embodiments corresponding to fig. 3 to fig. 7.

Referring to fig. 11, fig. 11 is a schematic structural diagram of another wireless network device according to an embodiment of the present invention. Specifically, as shown in fig. 11, the wireless network device according to the embodiment of the present invention may include: a communication interface 600, a memory 500 and a processor 400, wherein the processor 400 is connected to the communication interface 600 and the memory 500 respectively.

The communication interface 600, the memory 500 and the processor 400 may be connected by a bus, or may be connected by other methods. In this embodiment, a bus connection is described.

The processor 400 may be a CPU, an NP, or a combination of a CPU and an NP.

The processor 400 may further include a hardware chip. The hardware chip may be an ASIC, PLD, or a combination thereof. The PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.

The Memory 500 may include a Volatile Memory (english: Volatile Memory), such as a RAM; the memory may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), an HDD, or an SSD; the memory 500 may also comprise a combination of memories of the kind described above.

The wireless network device may be a terminal or a base station. Optionally, the memory 500 may be used for storing program instructions, and the processor 400 calls the program instructions stored in the memory 500, and may execute one or more steps in the embodiments shown in fig. 3 to fig. 7, or an alternative implementation thereof, so that the wireless network device implements the functions in the above-described method. For example, the wireless network device may implement, through the modules, some or all of the steps performed by the terminal in the CP determining method in the embodiments corresponding to fig. 3 to fig. 7.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, functional modules in the embodiments of the present invention may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware form, and can also be realized in a form of hardware and a software functional module.

The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

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 invention 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, for example, from one website site, computer, server, or data center to another website site, 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.). 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.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Cyclic Prefix (CP) determination method, comprising:

the first wireless network equipment determines CP configuration information, wherein the CP configuration information comprises at least one of a CP configuration period, a CP type and a CP length;

the first wireless network device determining a CP for a first time unit based on the CP configuration information;

wherein the content of the first and second substances,

the CP configuration information comprises a CP type, and the CP type is a first CP type or a second CP type; the first wireless network device determining a CP for a first time unit based on the CP configuration information, including:

the first wireless network device configures the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information; wherein both M and N are integers greater than 0, and the sum of M and N is not greater than the total number of symbols included in the first time unit;

the first wireless network device configures the CPs of the remaining symbols in the first time unit as the CPs of the first CP type or the second CP type, wherein the remaining symbols are symbols other than the M and N symbols in the first time unit.

2. The method of claim 1, wherein the CP configuration information comprises a CP configuration period and a CP type, wherein the CP configuration period is K0.5 milliseconds; wherein K is an integer greater than or equal to 1;

the method further comprises the following steps:

and the first wireless network equipment sends a message to second wireless network equipment according to the CP configuration period, wherein the message is used for indicating the CP type.

3. The method of claim 1, wherein the CP configuration information comprises a CP configuration period and a CP type, and wherein the unit of the first time unit is a first time unit;

when the CP type is a second CP type, the CP configuration period is K0.5 milliseconds; wherein K is an integer greater than or equal to 1;

the method further comprises the following steps:

4. The method according to claim 2 or 3, wherein the message is sent by the first wireless network device to the second wireless network device by a second time unit, and the second time unit is determined based on at least one of the number of first time units included in one second time unit, a first offset parameter, and the CP configuration period;

wherein the time units of the first time unit and the second time unit are the first time units, and one of the second time units includes at least one of the first time units; the first offset parameter is used to determine an offset value of the second time unit within the CP configuration period or a second time unit.

5. The method of claim 4, wherein the CP configuration information further comprises a second offset parameter;

wherein the second offset parameter is determined based on the identity of the second time unit and the CP configuration period.

6. The method according to claim 2, wherein the CPs of the time units included in the range from the CP configuration period to the CP configuration period corresponding to the next CP configuration information are all configured as the CP of the CP type indicated by the CP configuration information.

7. The method according to claim 3, wherein the CPs of the time units included in the range from the CP configuration period to the CP configuration period corresponding to the next CP configuration information are all configured as the CP of the CP type indicated by the CP configuration information.

8. The method of claim 1, wherein the CP configuration information comprises a CP type and a CP length, and wherein the CP type is a second CP type; the CP length is determined based on the subcarrier interval of a first time unit, the identifier of the first time unit and the number of first time units included in a third time unit;

wherein the time unit of the first time unit is a first time unit, and one of the third time units includes at least one of the first time units.

9. The method of claim 1, wherein the CP type indicated by the CP configuration information is a first CP type; the first wireless network device configures the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, and includes:

the first wireless network device configures the CPs of the first M symbols and the last N symbols of the first time unit as CPs of the first CP type.

10. The method of claim 1, wherein the CP type indicated by the CP configuration information is a second CP type; the first wireless network device configures the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, and includes:

the first wireless network device configures the CPs of the last N symbols of the first time unit as CPs of the second CP type.

11. The method of claim 1, wherein the CP configuration information comprises a CP type; the first wireless network device determining a CP of a first time unit based on the CP configuration information, further comprising:

the first wireless network device determining a location of a first time unit based on a CP type indicated by the CP configuration information;

the first wireless network device configures a CP of at least one symbol or at least one channel within the first time unit as a CP of a first CP type or a second CP type.

12. A Cyclic Prefix (CP) determination method, comprising:

the second wireless network equipment determines CP configuration information, wherein the CP configuration information comprises at least one of a CP configuration period, a CP type and a CP length;

the second wireless network device determining a CP for a first time unit based on the CP configuration information;

wherein the second wireless network device is in communication with a first wireless network device;

the CP configuration information comprises a CP type, and the CP type is a first CP type or a second CP type; the second wireless network device determining a CP for a first time unit based on the CP configuration information, including:

the second wireless network equipment configures the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information; wherein both M and N are integers greater than 0, and the sum of M and N is not greater than the total number of symbols included in the first time unit;

the second wireless network device configures the CPs of the remaining symbols in the first time unit as CPs of the first CP type or the second CP type, wherein the remaining symbols are symbols other than the M and N symbols in the first time unit.

13. The method of claim 12, wherein the CP configuration information comprises a CP configuration period and a CP type, wherein the CP configuration period is K0.5 milliseconds; wherein K is an integer greater than or equal to 1;

the second wireless network device determining CP configuration information, including:

and the second wireless network equipment receives a message sent by the first wireless network equipment according to the CP configuration period, wherein the message is used for indicating the CP type.

14. The method of claim 12, wherein the CP configuration information comprises a CP configuration period and a CP type, and wherein the first time unit is a first time unit;

15. A wireless network device, comprising:

a first determining module, configured to determine CP configuration information, where the CP configuration information includes at least one of a CP configuration period, a CP type, and a CP length;

a second determining module for determining a CP of the first time unit based on the CP configuration information;

wherein the content of the first and second substances,

the CP configuration information comprises a CP type, and the CP type is a first CP type or a second CP type; the second determining module is specifically configured to:

configuring the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information; wherein both M and N are integers greater than 0, and the sum of M and N is not greater than the total number of symbols included in the first time unit; configuring the CPs of the remaining symbols in the first time unit as CPs of the first CP type or the second CP type, wherein the remaining symbols are symbols other than the M and the N symbols in the first time unit.

16. The wireless network device of claim 15, wherein the CP configuration information comprises a CP configuration period and a CP type, wherein the CP configuration period is K0.5 milliseconds; wherein K is an integer greater than or equal to 1;

the wireless network device further includes:

a communication module, configured to send a message to another wireless network device according to the CP configuration period, where the message is used to indicate the CP type.

17. The wireless network device of claim 15, wherein the CP configuration information includes a CP configuration period and a CP type, and wherein the unit of the first time unit is a first time unit;

the wireless network device further includes:

18. The wireless network device according to claim 16 or 17, wherein the message is sent by the wireless network device to the other wireless network device by a second time unit, and the second time unit is determined based on at least one of the number of first time units included in one second time unit, a first offset parameter, and the CP configuration period;

19. The wireless network device of claim 18, wherein the CP configuration information further comprises a second offset parameter;

20. The wireless network device according to claim 16, wherein the CPs of the time units included in the range from the CP configuration period to the CP configuration period corresponding to the next CP configuration information are all configured as CPs of the CP type indicated by the CP configuration information.

21. The wireless network device according to claim 17, wherein the CPs of the time units included in the range from the CP configuration period to the CP configuration period corresponding to the next CP configuration information are all configured as CPs of the CP type indicated by the CP configuration information.

22. The wireless network device of claim 15, wherein the CP configuration information comprises a CP type and a CP length, and wherein the CP type is a second CP type; the CP length is determined based on the subcarrier interval of a first time unit, the identifier of the first time unit and the number of first time units included in a third time unit;

23. The wireless network device of claim 15, wherein the CP type indicated by the CP configuration information is a first CP type; the second determining module, when performing the configuration of the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, is specifically configured to:

configuring the CPs of the first M symbols and the last N symbols of the first time unit as the CPs of the first CP type.

24. The wireless network device of claim 15, wherein the CP type indicated by the CP configuration information is a second CP type; the second determining module, when performing the configuration of the CP of the first M symbols and/or the last N symbols of the first time unit as the CP of the CP type indicated by the CP configuration information, is specifically configured to:

configuring the CPs of the last N symbols of the first time unit as the CP of the second CP type.

25. The wireless network device of claim 15, wherein the CP configuration information includes a CP type; the second determination module is further to:

configuring a CP of at least one symbol or at least one channel within the first time unit as a CP of a first CP type or a second CP type.

26. A wireless network device, comprising:

wherein the wireless network device is in communication with a first wireless network device;

the CP configuration information comprises a CP type, and the CP type is a first CP type or a second CP type; the determining the CP of the first time unit based on the CP configuration information comprises:

27. The wireless network device of claim 26, wherein the CP configuration information comprises a CP configuration period and a CP type, wherein the CP configuration period is K0.5 milliseconds; wherein K is an integer greater than or equal to 1;

the first determining module is specifically configured to, when determining the CP type:

28. The wireless network device of claim 26, wherein the CP configuration information includes a CP configuration period and a CP type, and wherein the first time unit is a first time unit;

29. A computer storage medium characterized in that the computer storage medium stores a program for executing the method of any one of claims 1 to 11.

30. A computer storage medium characterized in that the computer storage medium stores a program for executing the method of any one of claims 12 to 14.

31. A wireless network device, comprising: the system comprises a communication interface, a memory and a processor, wherein the processor is respectively connected with the communication interface and the memory; wherein the content of the first and second substances,

the memory is to store program instructions;

the processor is configured to call program instructions in the memory to perform the method of any of claims 1 to 11.

32. A wireless network device, comprising: the system comprises a communication interface, a memory and a processor, wherein the processor is respectively connected with the communication interface and the memory; wherein the content of the first and second substances,

the memory is to store program instructions;

the processor is configured to call program instructions in the memory to perform the method of any of claims 12 to 14.

33. A CP determination system, comprising:

a first wireless network device and a second wireless network device that communicate; the first wireless network device is configured to perform the method of any of claims 1 to 11.