CN110945942B - Method, device and terminal for determining DRS window in NR-U - Google Patents

Method, device and terminal for determining DRS window in NR-U Download PDF

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Publication number
CN110945942B
CN110945942B CN201980002919.5A CN201980002919A CN110945942B CN 110945942 B CN110945942 B CN 110945942B CN 201980002919 A CN201980002919 A CN 201980002919A CN 110945942 B CN110945942 B CN 110945942B
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window
length
drs
ssb
indication
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CN110945942A (en
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刘洋
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The disclosure provides a method, a device and a terminal for determining a DRS window in an NR-U, wherein the method comprises the following steps: receiving window implication information, wherein the window implication information is used for implicitly indicating the window length of a DRS window; receiving SSB according to the window length; wherein, the DRS window corresponds to at least two candidate window lengths.

Description

Method, device and terminal for determining DRS window in NR-U
Technical Field
The present application relates to the field of mobile communications, and in particular, to a method, an apparatus, and a terminal for determining a DRS window in an NR-U.
Background
The 5G (5 th generation mobile communication system) has studied unlicensed spectrum and proposed a scheme for supporting individual networking of 5G unlicensed cells. In the design of 5G unlicensed spectrum independent networking (New Radio Unlicense, NR-U), the first step is to consider the design of synchronized broadcast BLOCKs (SS/PBCH BLOCK, SSB). For unlicensed spectrum, the LBT (listen before talk ) principle needs to be followed. When the base station needs to transmit SSB to the terminal, under the LBT principle, the SSB may not be transmitted at a location of a system fixed configuration because time-frequency resources are occupied. At this time, it is possible to try to send SSB again at an alternative offset transmission position (SSB shifting) allowed by the system, so that the User Equipment (UE) can synchronize with the network side in time.
The DRS window is a window for transmitting SSBs, and the DRS window is defined as 5ms in the related art, that is, the maximum number of SSBs that can be transmitted is 20 in a scenario where the subcarrier interval is 30 kHZ. However, if only 1 or 2 SSBs are transmitted, other candidate transmission positions in the DRS window are lost during rate matching, which wastes system resources.
Disclosure of Invention
The embodiment of the application provides a method, a device, a terminal and a storage medium for determining a DRS window in an NR-U, which can be used for solving the problem that if only 1 or 2 SSBs are sent, other candidate sending positions in the DRS window are lost in rate matching, so that system resources are wasted. The technical scheme is as follows:
in one aspect, a method of determining a discovery reference signal (Discover Reference Symbol, DRS) window in an NR-U is provided, the method comprising:
receiving window implication information, wherein the window implication information is used for implicitly indicating the window length of a DRS window;
receiving SSB according to the window length;
wherein, the DRS window corresponds to at least two candidate window lengths.
In another aspect, a method for determining a DRS window in an NR-U is provided, where the method includes:
generating window implication information, wherein the window implication information is used for implicitly indicating the window length of the DRS window;
transmitting the window implication information;
and sending the SSB in the DRS window with the window length.
In another aspect, there is provided a DRS window determination apparatus in an NR-U, the apparatus comprising:
a receiving module configured to receive window implication information for implicitly indicating a window length of a discovery reference signal, DRS, window;
a processing module for receiving SSB according to the window length;
wherein, the DRS window corresponds to at least two candidate window lengths.
In another aspect, there is provided a DRS window determination apparatus in an NR-U, the apparatus comprising:
generating window implication information, wherein the window implication information is used for implicitly indicating the window length of the DRS window;
transmitting the window implication information;
and sending the SSB in the DRS window with the window length.
In another aspect, there is provided a terminal including:
a processor;
a transceiver coupled to the processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to load and execute the executable instructions to implement the DRS window determination method in NR-U as described above.
In another aspect, there is provided a network side device, including:
a processor;
a transceiver coupled to the processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to load and execute the executable instructions to implement the DRS window determination method in NR-U as described above.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
by providing the window length of at least two DRS windows, the terminal determines the window length of the DRS in the current transmission by using the window implication information, and receives the SSB in the window length. For a scene with more SSB, a larger DRS window is used; for the scenario where fewer SSBs are sent, a smaller DRS window is used. That is, different numbers of SSBs are transmitted using reasonable DRS windows, avoiding wasting system resources.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a communication system provided by an exemplary embodiment of the present application;
FIG. 2 is a flow chart of a method for determining DRS windows in an NR-U according to an exemplary embodiment of the present application;
fig. 3 is a flowchart of a DRS window determination method in an NR-U according to another exemplary embodiment of the present application;
FIG. 4 is a schematic diagram of a first indication field according to another exemplary embodiment of the present application;
fig. 5 is a schematic structural diagram of a DRS window determination apparatus in an NR-U according to an exemplary embodiment of the present application;
fig. 6 is a schematic structural diagram of a DRS window determination apparatus in an NR-U according to another exemplary embodiment of the present application;
fig. 7 is a schematic structural view of a terminal according to an exemplary embodiment of the present application;
fig. 8 is a schematic diagram of a structure of a base station according to another exemplary embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
Fig. 1 illustrates a block diagram of a communication system operating in an unlicensed band provided by an exemplary embodiment of the present disclosure, which may include: access network 12 and terminal 13.
Access network 12 includes a number of access network devices 120 therein. Access network device 120 may be a base station, which is a device deployed in an access network to provide wireless communication functionality for terminals. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In a 5G NR-U system, a device with a base station function is called gNodeB or gNB. As communication technology evolves, the description of "base station" may change.
The terminal 13 may include various handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment, mobile Stations (MSs), terminals, etc. For convenience of description, the above-mentioned devices are collectively referred to as a terminal. Access network device 120 and terminal 13 communicate with each other via some air interface technology, such as the Uu interface.
It should be noted that, in the following, the exemplary embodiments of the present disclosure are only illustrated by taking a terminal access network device as an example, after understanding the technical solutions of the present disclosure, those skilled in the art will easily think of a configuration method of a physical random access channel provided in the present disclosure as a configuration method of another physical random access channel that is subsequently evolved, and a case of applying the configuration method to other terminal access to other access network devices, and these expansion schemes should be included in the protection scope of the present disclosure.
Fig. 2 shows a flowchart of a DRS window determination method in an NR-U provided by an exemplary embodiment of the present disclosure. The method may be performed by a terminal, the method comprising:
step 202, receiving window implication information, wherein the window implication information is used for implicitly indicating the window length of a DRS window, and the DRS window corresponds to at least two candidate window lengths;
the DRS window is a time domain window for transmitting the DRS signal. The DRS signal includes SSB.
In one example, the DRS window includes two candidate window lengths. For example, one window length is 5ms and the other window length is 2.5ms. For another example, one window length is 5ms and the other window length is 2ms.
In one example, the DRS window includes more than three candidate window lengths. The maximum window length is 5ms, and the other candidate window lengths are all less than 5ms and multiples of 0.5ms. For example, candidate window lengths include: 5ms, 2.5ms, 2ms, 1.5ms, 1ms or 0.5ms.
The terminal receives window implication information sent by the access network equipment, and acquires the window length of the DRS window according to the window implication information.
In one example, the window hint information is implicitly indicated by the send location indication information of the SSB; in another example, the window hint information is implicitly indicated in conjunction with the transmission location indication information of the SSB and the QCL.
Step 204, receiving the SSB according to the window length.
After determining the window length of the DRS window, SSBs are received in the DRS window having the window length.
In one example, the terminal receives 4n or 8n SSBs in a DRS window with a window length of 5 ms; 1n or 2n SSBs are received in a DRS window having a window length of less than 5ms. n is the number of SSBs transmitted in a single beam, n is a positive integer, for example n is 1.
In summary, in the method provided in this embodiment, by providing the window lengths of at least two DRS windows, the terminal determines the window length of the DRS in the current transmission by using the window hint information, and receives the SSB in the window length. For a scene with more SSB, a larger DRS window is used; for the scenario where fewer SSBs are sent, a smaller DRS window is used. That is, different numbers of SSBs are transmitted using reasonable DRS windows, avoiding wasting system resources.
In an alternative embodiment based on fig. 2, the window indication information includes transmission location indication information of the SSB, where the transmission location indication information includes a first indication field and a second indication field, and when the second indication field is missing, the window length of the DRS window is determined to be a first length, and the first length is a maximum value of window lengths of at least two candidates.
The transmission position indication information of the SSB is exemplified by SSB-locationinburst information element (Information Element, IE) carried in minimum system remaining information ((Remaining Minimum System Information, RMSI). Definition of SSB-PositionInBurst IE is as follows
Wherein, SEQUENCE represents a SEQUENCE structure, inOneGroup is a first indication domain, and the first indication domain is a bit string occupying 8 bits; groupppresence is a second indication field, which is a bit string occupying 8 bits. I.e. the first indication field is the first 8 bits in the position indication information of the SSB and the second indication field is the last 8 bits in the position indication information of the SSB. Wherein the second indication field is an optional information field.
The structure of the SSB-PositionInBurst information element in the radio resource control (Radio Resource Control, RRC) is slightly different from the above-described structure (only the number of bits is different), but the same applies.
Wherein shortbits represents a short bitmap that occupies 4 bits, mediabitmap represents a medium bitmap that occupies 8 bits, longBitmap represents a long bitmap that occupies 64 bits.
For the case where the window length of the DRS window is two lengths:
in another alternative embodiment based on fig. 2, the window indication information includes: and transmitting position indication information and Quasi Co-Location (QCL) of the SSB, wherein the transmitting position indication information of the SSB comprises a first indication domain and a second indication domain.
When the second indication field is present and QCL is 1 or 2, determining that the window length of the DRS window is a second length, the second length being 2.5ms or 2ms.
For the case that the window length of the DRS window is three or more:
in another alternative embodiment based on fig. 2, the window indication information includes: and transmission position indication information of the SSB, wherein the transmission position indication information of the SSB comprises a first indication domain and a second indication domain.
When the second indication domain exists, determining that the window length of the DRS window is a third length according to the value of the second indication domain, wherein the third length is the length except the first length in the window lengths of at least two candidates, and the length except the first length in the window lengths of at least two candidates is smaller than 5ms and is a multiple of 0.5ms.
In an illustrative example, table one shows the correspondence between the value of the second indication field and the window length of the DRS window.
List one
The value of the second indication field (grouppPresence) Window length of DRS window
00000001 4ms
00000010 2.5ms
00000011 2ms
00000100 1ms
The above table is merely an exemplary illustration, and the present application does not limit the correspondence between the value of the second indication field and the window length of the DRS window.
Fig. 3 shows a flowchart of a DRS window determination method in an NR-U according to an exemplary embodiment of the present disclosure. The method may be performed by a base station, the method comprising:
step 302, generating window implication information, wherein the window implication information is used for implicitly indicating the window length of the DRS window;
the DRS window is a time domain window for transmitting the DRS signal. The DRS signal includes SSB.
In one example, the DRS window includes two candidate window lengths. For example, one window length is 5ms and the other window length is 2.5ms. For another example, one window length is 5ms and the other window length is 2ms.
In one example, the DRS window includes more than three candidate window lengths. The maximum window length is 5ms, and the other candidate window lengths are all less than 5ms and multiples of 0.5ms. For example, candidate window lengths include: 5ms, 2.5ms, 2ms, 1.5ms, 1ms or 0.5ms.
In one example, the window hint information is implicitly indicated by the send location indication information of the SSB; in another example, the window hint information is implicitly indicated in conjunction with the transmission location indication information of the SSB and the QCL.
Step 304, sending window implication information;
step 306, sending SSB in DRS window with window length;
after determining the window length of the DRS window, the SSB is transmitted in the DRS window having the window length.
In one example, the base station transmits 4n or 8n SSBs in a DRS window with a window length of 5 ms; 1n or 2n SSBs are transmitted in a DRS window having a window length of less than 5ms. n is the number of SSBs transmitted in a single beam, n is a positive integer, for example n is 1.
In summary, in the method provided in this embodiment, by providing the window lengths of at least two DRS windows, the terminal determines the window length of the DRS in the current transmission by using the window hint information, and receives the SSB in the window length. For a scene with more SSB, a larger DRS window is used; for the scenario where fewer SSBs are sent, a smaller DRS window is used. That is, different numbers of SSBs are transmitted using reasonable DRS windows, avoiding wasting system resources.
In an alternative embodiment based on fig. 3, the window implication information includes: the SSB sends position indication information, wherein the position indication information comprises a first indication domain and a second indication domain, and the second indication domain is missing;
and a second indication field for implicitly indicating that the window length of the DRS window is a first length, the first length being the maximum value of the window lengths of the at least two candidates.
The first indication field is the first 8 bits in the location indication information of the SSB and the second indication field is the last 8 bits in the location indication information of the SSB.
For the case where the window length of the DRS window is two lengths:
in an alternative embodiment based on fig. 3, the window implication information includes: and the transmission position indication information of the SSB and quasi co-location information QCL comprises a first indication domain and a second indication domain. And the second indication domain and the QCL are used for implicitly indicating that the window length of the DRS window is a second length.
The first length is illustratively 5ms and the second length is either 2.5ms or 2ms.
For the case that the window length of the DRS window is three or more:
in an alternative embodiment based on fig. 3, the window implication information includes: the SSB sends position indication information, wherein the position indication information comprises a first indication domain and a second indication domain;
and the value of the second indication domain is used for implicitly indicating that the window length of the DRS window is a third length. Wherein the different values of the second indication field correspond to different third lengths, the third lengths being lengths other than the first length of the window lengths of the at least two candidates.
For example, the first length is 5ms, and the length other than the first length of each of the at least two candidate window lengths is less than 5ms and is a multiple of 0.5ms.
It should be noted that, in one possible embodiment, 1 bit in the first indication field in the transmission position indication information of the SSB may also be used to indicate that the window length of the DRS window is a variable length (or a fixed length). The 1 bit is the bit corresponding to the current SSB in the first indication field. The current SSB is the SSB which is received by the terminal and carries the SSB-PositionInBurst.
As shown in fig. 4, the first behavior first indication field and the second behavior second indication field, one block represents 1-bit indication information and also represents a time-frequency resource (hereinafter referred to as a slot block) corresponding to one synchronous broadcast block. The numeral 1 indicates that there is a synchronous broadcast block transmission on the time-frequency resource, and the shading indicates the currently received synchronous broadcast block. That is, the current SSB is SSB5.
Since the current SSB is positively received by the UE, the bit value of the shaded box shown in fig. 4 may be used to implicitly indicate other information, such as that the DRS window supports a variable length when the bit value is 0 and that the DRS window is a fixed length when the bit value is 1.
Fig. 5 shows a block diagram of a DRS window determination apparatus in an NR-U according to an exemplary embodiment of the present application. The device comprises:
a receiving module 520 configured to receive window implication information for implicitly indicating a window length of a discovery reference signal, DRS, window;
a processing module 540, configured to receive a synchronization signal block SSB according to the window length;
wherein the DRS corresponds to a window length of at least two candidates.
In an alternative embodiment, the receiving module 520 is configured to receive transmission location indication information of the SSB, where the transmission location indication information includes a first indication field and a second indication field;
the processing module 540 is configured to determine, when the second indication field is absent, a window length of the DRS window to be a first length; the first length is the maximum of the window lengths of the at least two candidates.
In an alternative embodiment, the DRS window has a window length of two,
the receiving module 520 is further configured to receive a quasi co-sited QCL;
the processing module 540 is further configured to determine that the window length of the DRS window is a second length when the second indication field is present and the QCL has a value of 1 or 2.
In an alternative embodiment, the first length is 5ms,
the second length is 2.5ms or 2ms.
In an alternative embodiment, the window length of the DRS window is more than three;
the processing module 540 is further configured to determine, when the second indication field is present, that the window length of the DRS window is a third length according to the value of the second indication field;
wherein different values of the second indication field correspond to different third lengths, the third lengths being lengths other than the first length among the window lengths of the at least two candidates.
In an alternative embodiment, the first length is 5ms, and the lengths of the at least two candidate window lengths other than the first length are each less than 5ms and a multiple of 0.5ms.
In an alternative embodiment, the first indication field is the first 8 bits in the location indication information of the SSB, and the second indication field is the last 8 bits in the location indication information of the SSB.
Fig. 6 shows a block diagram of a DRS window determination apparatus in an NR-U according to an exemplary embodiment of the present application. The device comprises:
a generation module 620 configured to generate window implication information for implicitly indicating a window length of the DRS window;
a transmitting module 640 configured to transmit the window hint information;
the sending module 640 is configured to send SSBs in a DRS window with the window length.
In an alternative embodiment, the window hint information includes:
the sending position indication information of the SSB comprises a first indication domain and a second indication domain, wherein the second indication domain is missing;
the second indication field is configured to implicitly indicate that a window length of the DRS window is a first length, where the first length is a maximum value of window lengths of the at least two candidates.
In an alternative embodiment, the window hint information includes:
the method comprises the steps that the SSB sends position indication information and quasi co-location information QCL, wherein the sent position indication information comprises a first indication domain and a second indication domain, and the QCL takes a value of 1 or 2;
and the second indication domain and the QCL are used for implicitly indicating that the window length of the DRS window is a second length.
In an alternative embodiment, the first length is 5ms and the second length is 2.5ms or 2ms.
In an optional embodiment, the window length of the DRS window is more than three, and the window implication information includes:
the SSB sends position indication information which comprises a first indication domain and a second indication domain;
the value of the second indication field is used for implicitly indicating that the window length of the DRS window is a third length;
wherein different values of the second indication field correspond to different third lengths, the third lengths being lengths other than the first length among the window lengths of the at least two candidates.
In an alternative embodiment, the first length is 5ms, and the lengths of the at least two candidate window lengths other than the first length are each less than 5ms and a multiple of 0.5ms.
In an alternative embodiment, the first indication field is the first 8 bits in the location indication information of the SSB, and the second indication field is the last 8 bits in the location indication information of the SSB.
Fig. 7 is a schematic structural diagram of a terminal according to an exemplary embodiment of the present application, the terminal including: a processor 701, a receiver 702, a transmitter 703, a memory 704 and a bus 705.
The processor 701 includes one or more processing cores, and the processor 701 executes various functional applications and information processing by running software programs and modules.
The receiver 702 and the transmitter 703 may be implemented as one communication component, which may be a communication chip.
The memory 704 is connected to the processor 701 through the bus 705.
The memory 704 may be used for storing at least one instruction, and the processor 701 is configured to execute the at least one instruction to implement the steps in the above-described method embodiments.
Further, memory 704 may be implemented by any type of volatile or nonvolatile storage device or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).
In an exemplary embodiment, there is also provided a computer readable storage medium having stored therein at least one instruction, at least one program, a code set, or a set of instructions, which are loaded and executed by the processor to implement the steps performed by the terminal in the DRS window determination method in an NR-U provided by the above respective method embodiments.
Fig. 8 is a schematic structural diagram of a base station according to an exemplary embodiment of the present application, where the base station includes: a processor 801, a receiver 802, a transmitter 803, a memory 804, and a bus 805.
The processor 801 includes one or more processing cores, and the processor 801 executes various functional applications and information processing by running software programs and modules.
The receiver 802 and the transmitter 803 may be implemented as one communication component, which may be a communication chip.
The memory 804 is connected to the processor 801 through a bus 805.
The memory 804 may be configured to store at least one instruction, and the processor 801 is configured to execute the at least one instruction to implement each step performed by the base station in the DRS window determination method in the NR-U in the method embodiment described above.
Further, the memory 804 may be implemented by any type of volatile or nonvolatile storage device, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).
In an exemplary embodiment, there is also provided a computer readable storage medium having stored therein at least one instruction, at least one program, a code set, or a set of instructions, which are loaded and executed by the processor to implement the DRS window determination method in NR-U performed by a base station provided by the above respective method embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The foregoing description of the preferred embodiments of the present application is not intended to limit the application, but rather, the application is to be construed as limited to the appended claims.

Claims (22)

1. A method for determining a DRS window of a discovery reference signal in an NR-U, the method comprising:
receiving transmission position indication information of a synchronous signal block SSB, wherein the transmission position indication information comprises a first indication domain and a second indication domain;
determining a window length of a DRS window based on the transmission position indication information of the SSB, or determining the window length of the DRS window based on the transmission position indication information of the SSB and a quasi co-located QCL;
receiving the SSB according to the window length;
wherein, the DRS window corresponds to at least two candidate window lengths, and the sending position indication information of the SSB and/or the QCL are used for implicitly indicating the window length of the DRS window;
when the second indication domain is missing, the window length of the DRS window is a first length; the first length is the maximum of the window lengths of the at least two candidates;
the first indication field is the first 8 bits in the location indication information of the SSB, and the second indication field is the last 8 bits in the location indication information of the SSB;
the first bit in the first indication domain is used for indicating that the window length of the DRS window is a variable length or a fixed length, and the first bit is a bit corresponding to the SSB in the first indication domain.
2. The method of claim 1, wherein the DRS window has a window length of two, the method further comprising:
receiving the QCL;
and when the second indication domain exists and the value of the QCL is 1 or 2, determining that the window length of the DRS window is a second length.
3. The method of claim 2, wherein the first length is 5ms and the second length is 2.5ms or 2ms.
4. The method of claim 1, wherein the DRS window has a window length of three or more, the method further comprising:
when the second indication domain exists, determining that the window length of the DRS window is a third length according to the value of the second indication domain;
wherein different values of the second indication field correspond to different third lengths, the third lengths being lengths other than the first length among the window lengths of the at least two candidates.
5. The method of claim 4, wherein the first length is 5ms, and wherein the length of each of the at least two candidate window lengths other than the first length is less than 5ms and is a multiple of 0.5ms.
6. A method for determining a DRS window in an NR-U, the method comprising:
generating transmission position indication information of a Synchronous Signal Block (SSB), or generating transmission position indication information of the SSB and quasi co-located QCL, wherein the transmission position indication information of the SSB and/or the QCL is used for implicitly indicating the window length of a DRS window;
transmitting the transmission position indication information of the SSB, or transmitting the transmission position indication information of the SSB and the QCL;
transmitting the SSB in a DRS window having the window length;
wherein the DRS window corresponds to at least two candidate window lengths;
the sending position indication information comprises a first indication domain and a second indication domain;
when the second indication domain is missing, the window length of the DRS window is a first length; the first length is the maximum of the window lengths of the at least two candidates;
the first indication field is the first 8 bits in the location indication information of the SSB, and the second indication field is the last 8 bits in the location indication information of the SSB;
the first bit in the first indication domain is used for indicating that the window length of the DRS window is a variable length or a fixed length, and the first bit is a bit corresponding to the SSB in the first indication domain.
7. The method of claim 6, wherein the SSB transmission location indication information includes a first indication field and a second indication field;
and when the second indication domain exists and the value of the QCL is 1 or 2, the second indication domain and the QCL are used for implicitly indicating that the window length of the DRS window is a second length.
8. The method of claim 7, wherein the first length is 5ms and the second length is 2.5ms or 2ms.
9. The method of claim 6 wherein the DRS window has a window length of three or more, and the SSB transmission location indication information includes a first indication field and a second indication field;
when the second indication domain exists, the value of the second indication domain is used for implicitly indicating that the window length of the DRS window is a third length;
wherein different values of the second indication field correspond to different third lengths, the third lengths being lengths other than the first length among the window lengths of the at least two candidates.
10. The method of claim 9, wherein the first length is 5ms, and wherein the length of each of the at least two candidate window lengths other than the first length is less than 5ms and is a multiple of 0.5ms.
11. A DRS window determination apparatus in an NR-U, the apparatus comprising:
a receiving module configured to receive transmission position indication information of the synchronization signal block SSB, the transmission position indication information including a first indication field and a second indication field;
a processing module configured to determine a window length of a DRS window based on the transmission location indication information of the SSB, or determine a window length of the DRS window based on the transmission location indication information of the SSB and a quasi co-located QCL;
the processing module is configured to determine that the window length of the DRS window is a first length when the second indication field is absent; the first length is the maximum of the window lengths of at least two candidates;
the processing module is used for receiving a synchronous signal block SSB according to the window length;
wherein, the DRS corresponds to at least two candidate window lengths, and the sending position indication information of the SSB and/or the QCL are used for implicitly indicating the window length of the DRS window;
the first indication field is the first 8 bits in the location indication information of the SSB, and the second indication field is the last 8 bits in the location indication information of the SSB;
the first bit in the first indication domain is used for indicating that the window length of the DRS window is a variable length or a fixed length, and the first bit is a bit corresponding to the SSB in the first indication domain.
12. The apparatus of claim 11, wherein the DRS window has a window length of two,
the receiving module is further configured to receive the QCL;
the processing module is further configured to determine that the window length of the DRS window is a second length when the second indication field is present and the QCL has a value of 1 or 2.
13. The apparatus of claim 12, wherein the first length is 5ms,
the second length is 2.5ms or 2ms.
14. The apparatus of claim 11, wherein the DRS window has a window length of three or more;
the processing module is further configured to determine, when the second indication field is present, that the window length of the DRS window is a third length according to the value of the second indication field;
wherein different values of the second indication field correspond to different third lengths, the third lengths being lengths other than the first length among the window lengths of the at least two candidates.
15. The apparatus of claim 14, wherein the first length is 5ms, and wherein the length of each of the at least two candidate window lengths other than the first length is less than 5ms and is a multiple of 0.5ms.
16. A DRS window determination apparatus in an NR-U, the apparatus comprising:
a generating module configured to generate transmission position indication information of a synchronization signal block SSB, or generate transmission position indication information of the SSB and a quasi co-located QCL, where the transmission position indication information of the SSB and/or the QCL are used to implicitly indicate a window length of a DRS window;
a transmission module configured to transmit the window hint information or transmit the transmission position indication information of the SSB and the QCL;
the sending module is further configured to send the SSB in a DRS window having the window length;
wherein the DRS window corresponds to at least two candidate window lengths;
the sending position indication information comprises a first indication domain and a second indication domain;
when the second indication domain is missing, the window length of the DRS window is a first length; the first length is the maximum of the window lengths of the at least two candidates;
the first indication field is the first 8 bits in the location indication information of the SSB, and the second indication field is the last 8 bits in the location indication information of the SSB;
the first bit in the first indication domain is used for indicating that the window length of the DRS window is a variable length or a fixed length, and the first bit is a bit corresponding to the SSB in the first indication domain.
17. The apparatus of claim 16, wherein the SSB transmission location indication information includes a first indication field and a second indication field;
and when the second indication domain exists and the value of the QCL is 1 or 2, the second indication domain and the QCL are used for implicitly indicating that the window length of the DRS window is a second length.
18. The apparatus of claim 17, wherein the first length is 5ms and the second length is 2.5ms or 2ms.
19. The apparatus of claim 16, wherein the DRS window has a window length of three or more, and the transmission location indication information comprises a first indication field and a second indication field;
when the second indication domain exists, the value of the second indication domain is used for implicitly indicating that the window length of the DRS window is a third length;
wherein different values of the second indication field correspond to different third lengths, the third lengths being lengths other than the first length among the window lengths of the at least two candidates.
20. The apparatus of claim 19, wherein the first length is 5ms, and wherein the length of each of the at least two candidate window lengths other than the first length is less than 5ms and is a multiple of 0.5ms.
21. A terminal, the terminal comprising:
a processor;
a transceiver coupled to the processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to load and execute the executable instructions to implement the DRS window determination method in an NR-U according to any one of claims 1 to 5.
22. A network side device, characterized in that the network side device comprises:
a processor;
a transceiver coupled to the processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to load and execute the executable instructions to implement the DRS window determination method in an NR-U according to any one of claims 6 to 10.
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