CN114125999B - Cell access method and device, and cell broadcasting method and device - Google Patents

Cell access method and device, and cell broadcasting method and device Download PDF

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CN114125999B
CN114125999B CN202111475189.6A CN202111475189A CN114125999B CN 114125999 B CN114125999 B CN 114125999B CN 202111475189 A CN202111475189 A CN 202111475189A CN 114125999 B CN114125999 B CN 114125999B
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ssb
value
parameter
cell
pdcch
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CN114125999A (en
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韩梦捷
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Xingsi Connection Shanghai Semiconductor Co ltd
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Xingsi Connection Shanghai Semiconductor Co ltd
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Priority to PCT/CN2022/130984 priority patent/WO2023083229A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0035—Synchronisation arrangements detecting errors in frequency or phase
    • 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
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

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

Abstract

The application provides a cell access method and device, and a cell broadcasting method and device, which are applied to the field of communication, wherein in the cell access method, when the searched SSB is CD-SSB, the cell can be directly tried to be accessed; when the searched SSB is NCD-SSB, the parameter K can be determined based on the difference between the subcarrier spacing of SSB and the subcarrier spacing of PDCCH where CORESET#0 is located SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where coreset#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of the access cell.

Description

Cell access method and device, and cell broadcasting method and device
Technical Field
The present invention relates to the field of communications, and in particular, to a method and apparatus for accessing a cell, and a method and apparatus for broadcasting a cell.
Background
In the initial access process of a New air interface (NR, new Radio) of the fifth generation mobile communication technology (5th Generation Mobile Communication Technology,5G), in each frequency band (band), the terminal device searches for a scanning synchronization signal and a broadcast information Block (Synchronization Signal and Physical Broadcast Channel Block, SS/PBCH Block, abbreviated as synchronization signal Block SSB) on a predefined synchronization grid (Synchronization Raster, synchronization subscriber) to access a cell, and acquires cell information of a target cell.
Among them, SSBs can be divided into Cell definition sync signal blocks (CD-SSBs) and non-Cell definition sync signal blocks (None Cell definition SSBs, NCD-SSBs). When the terminal device searches for the NCD-SSB on the Synch subscriber, it is necessary to find the target CD-SSB through the NCD-SSB.
In the prior art, when the terminal device searches for the SSB on the sync subscriber, the subcarrier spacing of the SSB is generally the same as the subcarrier spacing of the physical downlink Control channel (Physical Downlink Control Channel, PDCCH) where the Control-Resource Set #0 (core Set # 0) is located, and when the terminal device searches for the NCD-SSB, the terminal device can find the target CD-SSB based on the prior art. However, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH in which coreset#0 is located, the terminal device may not find a suitable CD-SSB, thereby increasing the delay of the access cell.
Disclosure of Invention
An objective of the embodiments of the present application is to provide a cell access method and apparatus, and a cell broadcast method and apparatus, so as to solve the problem that when the subcarrier interval of SSB is different from the subcarrier interval of PDCCH where coreset#0 is located, a terminal device may not find a suitable CD-SSB, thereby increasing the delay of accessing a cell.
In a first aspect, an embodiment of the present application provides a cell access method, including: when a synchronous signal block SSB is searched in a frequency band, determining whether to attempt to initiate cell access according to the searched SSB; wherein: the minimum frequency value of the frequency band is not less than 52.6GHz, the SSB is different from the subcarrier interval of the corresponding type 0-physical downlink control channel type0-PDCCH, and the SSB comprises a parameter K for indicating the subcarrier offset of the SSB SSB And, the parameter K SSB And the value of the (2) is configured according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH. In the above scheme, when the searched SSB is a CD-SSB, the cell may be directly attempted to be accessed; when the searched SSB is NCD-SSB, the parameter K can be determined based on the difference between the subcarrier spacing of SSB and the subcarrier spacing of PDCCH where CORESET#0 is located SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where coreset#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of the access cell.
In an alternative embodiment, the determining whether to attempt to initiate cell access according to the searched SSB includes: when the parameter K SSB The value of (1) falls within [0, p]When the SSB is determined to be a cell definition CD-SSB, demodulating the CD-SSB to try to initiate cell access, wherein p is a positive integer, and the value of p is determined according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH; when the parameter K SSB The value of (1) falls into [ p+1, p+2q ]]When determining that the SSB is non-cell-defining NCD-SSB, determining a target CD-SSB according to the NCD-SSB, demodulating the target CD-SSB to attempt to initiate cell access, wherein q is a positive integer, and the number of synchronous grids in the frequency band is as low as (256× (q-1), 256×q]. In the above scheme, when the parameter K SSB The value falls into [0, p]When the SSB is detected, the SSB can be directly used for attempting to access the cell; when parameter K SSB The value falls into [ p+1, p+2q ]]At this time, it can be based on the parameter K SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where coreset#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of the access cell.
In an alternative embodiment, said determining a target CD-SSB from said NCD-SSB comprises: GSCN according to the frequency domain position of the synchronous grid where the NCD-SSB is NCD-SSB And frequency domain position offset of the synchronization grid where the target CD-SSB and the NCD-SSB are locatedDetermining frequency domain location GSCN of target CD-SSB CD-SSB Wherein, said->According to the parameter K corresponding to the NCD-SSB SSB Determining a parameter PDCCH-configSIB1 of the configuration system information block 1; when the parameter K SSB When =p+1+i, the corresponding +.>The value of (2) falls within [256×i+1, 256× (i+1)]Wherein i is an integer, and i is more than or equal to 0 and less than or equal to q-1; when the parameter K SSB When =p+1+i+q, the corresponding +.>The value of (2) falls within [ -256× (i+1), - (256×i+1)]. In the above scheme, when the parameter K SSB The value falls into [ p+1, p+2q ]]When, the frequency domain location GSCNN can be based on NCD-SSB CD-SSB Corresponding frequency domain position offset +.>Finding a frequency domain location GSCN corresponding to an appropriate CD-SSB CD-SSB And attempts to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where coreset#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of the access cell.
In an alternative embodiment, p takes on a maximum integer value less than 12/j, where j characterizes the ratio of the SSB to the subcarrier spacing corresponding to the type 0-PDCCH.
In an alternative embodiment, when the subcarrier spacing of the SSB is 480kHz and the subcarrier spacing of the corresponding type0-PDCCH is 120kHz, p=2, q=3.
In an alternative embodiment, when the subcarrier spacing of the SSB is 960kHz and the subcarrier spacing of the corresponding type0-PDCCH is 120kHz, p=1, q=3.
In an alternative embodiment, when the subcarrier spacing of the SSB is 960kHz and the subcarrier spacing of the corresponding type0-PDCCH is 480kHz, p=5, q=3.
In a second aspect, embodiments of the present application provideA method for cell broadcast, comprising: broadcasting a synchronization signal block SSB in a frequency band, wherein: the minimum frequency value of the frequency band is not less than 52.6GHz, the SSB is different from the subcarrier interval of the corresponding type 0-physical downlink control channel type0-PDCCH, and the SSB comprises a parameter K for indicating the subcarrier offset of the SSB SSB And, the parameter K SSB And the value of the (2) is configured according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH. In the above scheme, after the network device broadcasts the SSB, when the SSB searched by the terminal device is a CD-SSB, it may directly attempt to access the cell; when the SSB searched by the terminal device is NCD-SSB, the parameter K can be determined based on the difference between the subcarrier spacing of the SSB and the subcarrier spacing of the PDCCH where CORESET#0 is located SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of the SSB is different from the subcarrier spacing of the PDCCH where CORESET#0 is located, the terminal equipment can find the proper CD-SSB through configuration, so that the delay of an access cell is reduced.
In an alternative embodiment, when the parameter K SSB The value of (1) falls within [0, p]When the SSB is characterized as a cell definition CD-SSB, wherein p is a positive integer, and the value of p is determined according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH; when the parameter K SSB The value of (1) falls into +p+1, p+2q]When characterizing the SSB as a non-cell-defining NCD-SSB, wherein q is a positive integer, and the number of synchronization grids in the frequency band takes a value falling within (256× (q-1), 256×q]. In the above scheme, when the parameter K SSB The value falls into [0, p]When the terminal equipment is characterized, the terminal equipment can directly try to access the cell based on the searched SSB; when parameter K SSB The value falls into [ p+1, p+2q ]]The characterization terminal device may be based on the parameter K SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of the SSB is different from the subcarrier spacing of the PDCCH where CORESET#0 is located, the terminal equipment can find the proper CD-SSB through configuration, so that the delay of an access cell is reduced.
In an alternative embodiment, when the parameter K SSB When=p+1+i, the correspondingThe value of (2) falls within [256×i+1, 256× (i+1)]Wherein i is an integer, and 0.ltoreq.i.ltoreq.q-1,/is ≡1>Characterizing the frequency domain position offset of the target CD-SSB and the synchronous grid where the NCD-SSB is positioned; when the parameter K SSB When =p+1+i+q, the corresponding +.>The value of (2) falls within [ -256× (i+1), - (256×i+1)]. In the above scheme, when the parameter K SSB The value falls into [ p+1, p+2q ]]When, the frequency domain location GSCNN can be based on NCD-SSB CD-SSB Corresponding frequency domain position offset +.>Finding a frequency domain location GSCN corresponding to an appropriate CD-SSB CD-SSB And attempts to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of the SSB is different from the subcarrier spacing of the PDCCH where CORESET#0 is located, the terminal equipment can find the proper CD-SSB through configuration, so that the delay of an access cell is reduced.
In an alternative embodiment, p takes on a maximum integer value less than 12/j, where j characterizes the ratio of the SSB to the subcarrier spacing corresponding to the type 0-PDCCH.
In an alternative embodiment, when the subcarrier spacing of the SSB is 480kHz and the subcarrier spacing of the corresponding type0-PDCCH is 120kHz, p=2, q=3.
In an alternative embodiment, when the subcarrier spacing of the SSB is 960kHz and the subcarrier spacing of the corresponding type0-PDCCH is 120kHz, p=1, q=3.
In an alternative embodiment, when the subcarrier spacing of the SSB is 960kHz and the subcarrier spacing of the corresponding type0-PDCCH is 480kHz, p=5, q=3.
In a third aspect, an embodiment of the present application provides a cell access device, including: the determining module is used for determining whether to attempt to initiate cell access according to the searched SSB when the synchronous signal block SSB is searched in the frequency band; wherein: the minimum frequency value of the frequency band is not less than 52.6GHz, the SSB is different from the subcarrier interval of the corresponding type 0-physical downlink control channel type0-PDCCH, and the SSB comprises a parameter K for indicating the subcarrier offset of the SSB SSB And, the parameter K SSB And the value of the (2) is configured according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH. In the above scheme, when the searched SSB is a CD-SSB, the cell may be directly attempted to be accessed; when the searched SSB is NCD-SSB, the parameter K can be determined based on the difference between the subcarrier spacing of SSB and the subcarrier spacing of PDCCH where CORESET#0 is located SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where coreset#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of the access cell.
In a fourth aspect, an embodiment of the present application provides a cell broadcasting apparatus, including: a broadcasting module for broadcasting a synchronization signal block SSB within a frequency band, wherein: the minimum frequency value of the frequency band is not less than 52.6GHz, the SSB is different from the subcarrier interval of the corresponding type 0-physical downlink control channel type0-PDCCH, and the SSB comprises a parameter K for indicating the subcarrier offset of the SSB SSB And, the parameter K SSB And the value of the (2) is configured according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH. In the above scheme, after the network device broadcasts the SSB, when the SSB searched by the terminal device is a CD-SSB, it may directly attempt to access the cell; when the SSB searched by the terminal device is NCD-SSB, the parameter K can be determined based on the difference between the subcarrier spacing of the SSB and the subcarrier spacing of the PDCCH where CORESET#0 is located SSB Finding a suitable CD-SS B and attempts to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of the SSB is different from the subcarrier spacing of the PDCCH where CORESET#0 is located, the terminal equipment can find the proper CD-SSB through configuration, so that the delay of an access cell is reduced.
In a fifth aspect, embodiments of the present application provide an electronic device, including: a processor, a memory, and a bus; the processor and the memory complete communication with each other through the bus; the memory stores computer program instructions executable by the processor, the processor invoking the computer program instructions to enable the execution of the cell access method according to any of the first aspects or the cell broadcast method according to any of the second aspects.
In a sixth aspect, embodiments of the present application provide a computer readable storage medium storing computer program instructions that, when executed by a computer, cause the computer to perform the cell access method according to any one of the first aspect or the cell broadcast method according to any one of the second aspect.
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related 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 according to an embodiment of the present application;
fig. 2 is a flowchart of a cell access method provided in an embodiment of the present application;
fig. 3 is a schematic diagram of RE level offset of SSB and type0-PDCCH provided in the embodiment of the present application;
fig. 4 is a schematic diagram of RE level offset of SSB and type0-PDCCH provided in the embodiment of the present application;
fig. 5 is a schematic diagram of RE level offset of SSB and type0-PDCCH provided in the embodiment of the present application;
fig. 6 is a block diagram of a cell access device according to an embodiment of the present application;
fig. 7 is a block diagram of a cell broadcasting device according to an embodiment of the present application;
fig. 8 is a block diagram of an electronic device according to an embodiment of the present application.
Detailed Description
Before describing the method provided by the embodiment of the present application, some concepts related to the embodiment of the present application are described first, where some concepts related to the embodiment of the present application are as follows:
each global synchronization channel number (Global Synchronization Channel Number, GSCN) corresponds to one frequency domain position in the sync symbol, please refer to table 1, table 1 shows the correspondence between each GSCN and the frequency domain position. It can be seen that according to the third column in table 1, GSCN corresponding to different frequency domain positions can be calculated.
Table 1 correspondence of each GSCN to frequency domain location
SSBs can be classified into CD-SSBs, which are mainly used for initial access of a cell, and NCD-SSBs, which contain system information block 1 (System Information Block, sib1) information of an access cell; whereas NCD-SSB is mainly used in other situations than initial access of a cell, such as: measurement, etc. Operators typically deploy NCD-SSBs and CD-SSBs together on the sync subscriber when deploying SSBs. Therefore, when the terminal device searches for the SSB on the sync subscriber, there is a certain probability that the SSB searched for is NCD-SSB, and since the NCD-SSB does not include SIB1 information of the access target cell, the terminal device needs to find the target CD-SSB through the NCD-SSB.
SSB includes a master information block (Master Information Block, MIB) and a physical broadcast channel (Physical Broadcast Channel, PBCH) payload.
The MIB is transmitted through the PBCH and includes parameters such as a system frame number (system Frame Number), a subcarrier common interval (sub Carrier Spacing Commo), a subcarrier offset parameter (ssb-Subcarrier Offset), a dmrs-type a Position (dmrs-type a-Position), and a configuration parameter (PDCCH-Config SIB 1) of a system information block 1 of a physical downlink control channel (Physical Downlink Control Channel, PDCCH).
Wherein SSB-Subcarrier Offset represents an offset of Resource Element-level (RE-level) between SSB and CORESEET#0, and the parameter K can be used SSB And (3) representing. According to different configurations, when the terminal equipment demodulates the parameter K SSB When the SSB is greater than or equal to the first value and less than the second value, it may indicate that the SSB is NCD-SSB, that is, it cannot be used for initial access of the cell. At this time, the terminal device can determine the offset of GSCN between the SSB (NCD-SSB) and the target SSB (CD-SSB) according to the control resource set 0 (Control Resource Set Zero) and the search space 0 (Search Space Zero) in the pdcch-config SIB1 in the MIB
Taking table 2 as an example, table 2 shows a GSCN offset relationship, when the terminal equipment demodulates the parameter K SSB When the number is a number of 12 or more and 14 or less, it may be represented that the SSB is NCD-SSB. For example, when parameter K SSB When configured as 12, control Resource Set Zero is configured as 0000 and search Space Zero is configured as 0001 (when 16×control resource zero+searchsparzero is configured as 1), the offset of GSCN between the target SSB (CD-SSB) and the SSB (NCD-SSB) can be determined
TABLE 2 GSCN offset relationship
And PBCH payload is mainly formed in the physical layer, and occupies 8 bits, and is used to represent a system frame number, a field indication, a candidate SSB index, and the like.
A cell generally refers to the range that can be covered by a signal of a network device.
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (GlobalSystem of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) systems, general packet radio service (General Packet Radio Service, GPRS), long term evolution (Long TermEvolution, LTE) systems, LTE frequency division duplex (Frequency Division Duplex, FDD) systems, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication systems, or 5G systems, and the like.
Referring to fig. 1, fig. 1 is a block diagram of a communication system according to an embodiment of the present application, where the communication system 100 may include a network device 101 and a terminal device 102, where the network device 101 is communicatively connected to the terminal device 102.
In particular, network device 101 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. It will be appreciated that the network device 101 provided in the embodiments of the present application may have different configurations in different communication systems.
As an embodiment, the network device 101 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN); as another embodiment, the network device 101 may be a network-side device in a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a 5G network, or the like.
The terminal device 102 may be a device located within the coverage area of the network device 101. Similar to the network device 101, it is understood that the terminal device 102 provided in the embodiments of the present application may have different configurations in different usage scenarios. For example, the terminal device 102 may be a handheld device, an in-vehicle device, a wearable device, a terminal device in a 5G network, or the like having a wireless communication function.
The communication method between the network device 101 and the terminal device 102 is not particularly limited in the embodiment of the present application. As an embodiment, the network device 101 and the terminal device 102 may use a wired communication manner, for example: the network device 101 and the terminal device 102 are connected by a digital subscriber line (Digital Subscriber Line, DSL), a digital cable, a road junction cable, etc.; as another embodiment, the network device 101 and the terminal device 102 may use a wireless communication manner, for example: through a cellular network, a wireless local area network (Wireless Local Area Network, WLAN), an internet of things (Internet of Things, ioT), etc.
The number of network devices 101 and the number of terminal devices 102 in the communication system 100 are not particularly limited in the embodiment of the present application. As an embodiment, the number of network devices 101 may be one or more; as another embodiment, the number of terminal devices 102 may be one or more.
When the number of network devices 101 is one, the communication system 100 may include one or more terminal devices 102 within the coverage area of the network device 101; when the number of network devices 101 is plural, there may be one or more terminal devices 102 located in the coverage area of each network device 101, and there may be an overlap between the terminal devices 102 located in the coverage areas of the plural network devices 101, that is, a certain terminal device 102 may be located in the coverage areas of the plural network devices 101 at the same time.
Further, the communication system 100 provided in the embodiments of the present application may further include other network entities such as a network controller, a mobility management entity, etc., which are not specifically described in the embodiments of the present application.
Based on the above-mentioned communication system 100, the embodiments of the present application provide a cell access method applied to a terminal device 102 and a cell broadcast method applied to a network device 101. The above two methods will be described in detail in order.
Referring to fig. 2, fig. 2 is a flowchart of a cell access method provided in an embodiment of the present application, where the cell access method may include the following:
Step S201: when SSB is searched in the frequency band, determining whether to attempt to initiate cell access according to the searched SSB.
Specifically, after the terminal device is powered on, the terminal device needs to be accessed into the cell, so that the terminal device can search each frequency domain position in the frequency band in sequence according to a certain sequence to receive the SSB corresponding to the frequency domain position. When the terminal device searches for the SSB in the frequency band, it may determine whether to attempt to access the cell according to the SSB.
After the terminal device searches for the SSB, the terminal device may parse the SSB. In the parsing process, the parameter K may be of interest SSB From this parameter it can be determined whether the SSB is CD-SSB or NCD-SSB.
It can be appreciated that when the SSB is determined to be a CD-SSB, the terminal device may directly attempt to access the cell; when the SSB is determined to be CD-SSB, the terminal device can be based on NCD-SSB and parameter K SSB Find the appropriate CD-SSB and attempt to access the cell.
It should be noted that, in the embodiment of the present application, the minimum frequency value of the frequency band is not less than 52.6GHz, and the subcarrier spacing between SSB and the corresponding type0-PDCCH is different. Wherein, parameter K SSB Can be valued according to SSThe subcarrier spacing of B is configured differently from the subcarrier spacing of the corresponding type 0-PDCCH. In other words, the difference of the subcarrier spacing of SSB and the subcarrier spacing of type0-PDCCH results in the parameter K SSB Is different from the above.
For example, when the subcarrier spacing of SSB is 480kHz and the subcarrier spacing of the corresponding type0-PDCCH is 120kHz, the parameter K can be set SSB Is configured to: when K is SSB Take the value of [0,2]When SSB is CD-SSB; when K is SSB Take the value of [3,8 ]]When SSB is NCD-SSB.
It can be appreciated that in some embodiments, the subcarrier spacing of SSB is equal to the subcarrier spacing of type0-PDCCH, but in embodiments of the present application, the subcarrier spacing of SSB and the subcarrier spacing of PDCCH where CORESET #0 is located are not equal.
In the above scheme, when the searched SSB is a CD-SSB, the cell may be directly attempted to be accessed; when the searched SSB is NCD-SSB, the parameter K can be determined based on the difference between the subcarrier spacing of SSB and the subcarrier spacing of PDCCH where CORESET#0 is located SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where coreset#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of the access cell.
Further, the step of determining whether to attempt to initiate the cell access according to the searched SSB may specifically include the following:
When parameter K SSB The value of (1) falls within [0, p]When the SSB is determined to be a CD-SSB, the CD-SSB is demodulated to attempt to initiate cell access.
When parameter K SSB The value of (1) falls into [ p+1, p+2q ]]When the SSB is determined to be NCD-SSB, the target CD-SSB is determined according to the NCD-SSB, and the target CD-SSB is demodulated to attempt to initiate cell access.
Specifically, as can be seen from the above embodiments, the parameter K SSB The value of (2) may be configured according to the difference between the subcarrier spacing of SSB and the subcarrier spacing of the corresponding type 0-PDCCH. As an embodiment, the parameter K may be SSB Is configured to: when (when)K SSB Take the value [0, p]When the SSB is CD-SSB, the terminal equipment can directly try to access the cell; when K is SSB Take the values [ p+1, p+2q ]]When SSB is NCD-SSB, the terminal equipment can be based on NCD-SSB and parameter K SSB Find the appropriate CD-SSB and attempt to access the cell.
It should be noted that p and q are both positive integers, and the value of p can be determined according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH; meanwhile, the number value of the synchronization grid in the frequency band falls into (256× (q-1), 256×q ].
In the above scheme, when the parameter K SSB The value falls into [0, p]When the SSB is detected, the SSB can be directly used for attempting to access the cell; when parameter K SSB The value falls into [ p+1, p+2q ]]At this time, it can be based on the parameter K SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where coreset#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of the access cell.
Further, the step of determining the target CD-SSB according to the NCD-SSB may specifically include the following:
GSCN according to frequency domain position of synchronous grid where NCD-SSB is NCD-SSB Frequency domain position offset of synchronization grid where target CD-SSB and NCD-SSB are locatedDetermining frequency domain location GSCN of target CD-SSB CD-SSB 。
Specifically, when parameter K SSB The value falls into [ p+1, p+2q ]]At this time, it can be based on the parameter K SSB Find the appropriate CD-SSB and attempt to access the cell. Wherein the terminal equipment can be used for searching the parameter K in the NCD-SSB SSB The frequency domain position GSCN of the synchronous grid where NCD-SSB is located is searched by configuring two parameters of a parameter PDCCH-configSIB1 of a system information block 1 NCD-SSB Then according to the GSCN NCD-SSB Frequency domain position offset of synchronization grid where target CD-SSB and NCD-SSB are locatedDetermining frequency domain location GSCN of target CD-SSB CD-SSB 。
As an embodiment, the frequency domain position GSCN of the synchronous grid where the NCD-SSB is positioned can be calculated NCD-SSB Frequency domain position offset from synchronization grid where target CD-SSB and NCD-SSB are locatedAdding to obtain the frequency domain position GSCN of the target CD-SSB CD-SSB . Namely:
when the parameter K is SSB When the value of p+1+i is =p+1+i, the value corresponds toThe value of (2) falls within [256×i+1, 256× (i+1)]The method comprises the steps of carrying out a first treatment on the surface of the While when parameter K SSB When =p+1+i+q, it corresponds to +.>The value of (2) falls within [ -256× (i+1), - (256×i+1)]. Wherein i is an integer, and i is more than or equal to 0 and less than or equal to q-1.
In the above scheme, when the parameter K SSB The value falls into [ p+1, p+2q ]]When, the frequency domain location GSCN can be based on NCD-SSB NCD-SSB Corresponding frequency domain position offsetFinding a frequency domain location GSCN corresponding to an appropriate CD-SSB CD-SSB And attempts to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where coreset#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of the access cell.
It will be appreciated that when it is determined that the searched CD-SSB is the CD-SSB or the corresponding CD-SSB is found according to the searched NCD-SSB, the terminal device may not necessarily access the corresponding cell based on the CD-SSB due to signal strength or the like. That is, the terminal device may attempt to access the cell first, and if the access fails, continue searching for other frequency domain locations.
Further, as an embodiment, the p value may be a maximum integer value less than 12/j, where j characterizes the ratio of SSB to the subcarrier spacing of the corresponding type 0-PDCCH.
The following describes the cell access method provided in the above embodiment by way of example.
For example, referring to fig. 3, fig. 3 is a schematic diagram of RE level offset of SSB and type0-PDCCH provided in the embodiment of the present application, with the subcarrier interval of the searched SSB being 480kHz and the subcarrier interval of the corresponding type0-PDCCH being 120 kHz.
As can be seen from fig. 3, the subcarrier spacing of SSB is 4 times that of type0-PDCCH, and since the RE level offset here is shifted in units of the subcarrier spacing of SSB, in this case, the offset of the RE level between SSB and type0-PDCCH may take 0, 1 or 2, with p=2.
At this time, only the parameter K is required to be used SSB For example: the lowest two bits (LSB of Subcarrier Offset). Thus, parameter K SSB Can be configured to: when K is SSB Take the value of [0,2]When SSB is CD-SSB; when K is SSB Take the value of [3,8 ]]When SSB is NCD-SSB. I.e. p=2, q=3. Based on this, at parameter K SSB In case the number of occupied bits is constant (e.g. 4 occupied bits), parameter K SSB The value of (2) can be flexibly configured according to the combination of subcarrier intervals corresponding to SSB and type0-PDCCH and the number of synchronization grids so as to realize the type of SSB and NCD-SSBThe correspondence between them is indicated.
When the minimum frequency value of the frequency band is not less than 52.6GHz, the number of the sync ras in the frequency band is greater than 256, for example, for the frequency band range of 52.6GHz-71GHz, since the number of the sync ras in the frequency band is greater than 256 and cannot exceed 665, the value range of the GSCN offset can be increased to-768 to 768 on the basis of the above embodiment when q=3.
Referring to table 3, table 3 shows a GSCN offset relationship. When K is SSB Take the value of [3,8 ]]When SSB is NCD-SSB. When K is SSB When=3 (i.e., when i=0), the correspondingThe value of (1) falls within [1, 256 ]]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When =4 (i.e. when i=1), the corresponding +.>The value of (1) falls into [257, 512 ]]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When =5 (i.e. when i=2), the corresponding +.>The value of (1) falls into [513, 768]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When =6 (i.e. when i=0), the corresponding +.>The value of (2) falls into [ -256, -1]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When =7 (i.e. when i=1), the corresponding +.>The value of (a) falls within [ -512, -257]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When=8 (i.e. when i=2), the correspondingThe value of (2) falls into [ -768, -513 ]。
TABLE 3 GSCN offset relationship
For example, referring to fig. 4, fig. 4 is a schematic diagram of RE level offset of SSB and type0-PDCCH provided in the embodiment of the present application, with the subcarrier interval of the searched SSB being 960kHz and the subcarrier interval of the corresponding type0-PDCCH being 120 kHz.
As can be seen from fig. 4, the subcarrier spacing of SSB is 8 times that of type0-PDCCH, and in this case, p=1, since the RE level offset here is shifted in units of the subcarrier spacing of SSB, the RE level offset between SSB and type0-PDCCH may be 0 or 1.
At this time, only the parameter K is required to be used SSB Is represented by 1 bit, parameter K SSB Can be configured to: when K is SSB Take the value of [0,1]When SSB is CD-SSB; when K is SSB Take the values [2,7 ]]When SSB is NCD-SSB. I.e. p=1, q=3. Based on this, at parameter K SSB In case the number of occupied bits is constant (e.g. 4 occupied bits), parameter K SSB The value of (2) can be flexibly configured according to the combination of subcarrier intervals corresponding to SSB and type0-PDCCH and the number of synchronization grids so as to realize the type of SSB and NCD-SSBThe correspondence between them is indicated.
Similarly, when the minimum frequency value of the frequency band is not less than 52.6GHz, the number of sync ras in the frequency band will be greater than 256, for example, for the frequency band range of 52.6GHz-71GHz, since the number of sync ras in the frequency band is greater than 256 and cannot exceed 665, when q=3, the value range of GSCN offset may be increased to-768 to 768 on the basis of the above embodiment.
Referring to table 4, table 4 shows a GSCN offset relationship. When K is SSB Take the values [2,7 ]]When SSB is NCD-SSB. When K is SSB When=2 (i.e., when i=0), the correspondingThe value of (1) falls within [1, 256 ]]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When =3 (i.e. when i=1), the corresponding +.>The value of (1) falls into [257, 512 ]]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When=4(i.e. i=2), corresponding +.>The value of (1) falls into [513, 768]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When =5 (i.e. when i=0), the corresponding +.>The value of (2) falls into [ -256, -1]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When =6 (i.e. when i=1), the corresponding +.>The value of (a) falls within [ -512, -257]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When=7 (i.e. when i=2), the correspondingThe value of (2) falls into [ -768, -513]。
TABLE 4 GSCN offset relationship
For example, referring to fig. 5, fig. 5 is a schematic diagram of RE level offset of SSB and type0-PDCCH provided in the embodiment of the present application, with the subcarrier interval of the searched SSB being 960kHz and the subcarrier interval of the corresponding type0-PDCCH being 480 kHz.
As can be seen from fig. 5, the subcarrier spacing of SSB is 2 times that of type0-PDCCH, and in this case, p=5, since the RE level offset here is shifted in units of the subcarrier spacing of SSB, the RE level offset between SSB and type0-PDCCH may be 0, 1, 2, 3, 4, or 5.
At this time, the parameter K needs to be used SSB In 3 bits, thus, parameter K SSB Can be configured to: when K is SSB Take the value of [0,5]When SSB is CD-SSB; when K is SSB Take the value of [6,1]When SSB is NCD-SSB. I.e. p=5, q=3. Based on this, at parameter K SSB In case the number of occupied bits is constant (e.g. 4 occupied bits), parameter K SSB The value of (2) can be flexibly configured according to the combination of subcarrier intervals corresponding to SSB and type0-PDCCH and the number of synchronization grids so as to realize the type of SSB and NCD-SSBThe correspondence between them is indicated.
Similarly, when the minimum frequency value of the frequency band is not less than 52.6GHz, the number of sync ras in the frequency band will be greater than 256, for example, for the frequency band range of 52.6GHz-71GHz, since the number of sync ras in the frequency band is greater than 256 and cannot exceed 665, and q=3, the value range of GSCN offset may be increased to-768 to 768 based on the above embodiments.
Referring to table 5, table 5 shows a GSCN offset relationship. When K is SSB Take on values [6, 11]When SSB is NCD-SSB. When K is SSB When=6 (i.e., when i=0), the correspondingThe value of (1) falls within [1, 256 ]]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When =7 (i.e. when i=1), the corresponding +.>The value of (1) falls into [257, 512 ]]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When =8 (i.e. when i=2), the corresponding +. >The value of (1) falls into [513, 768]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When =9 (i.e. when i=0), the corresponding +.>The value of (2) falls into [ -256, -1]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When =10 (i.e. when i=1), the corresponding +.>The value of (a) falls within [ -512, -257]The method comprises the steps of carrying out a first treatment on the surface of the When K is SSB When=11 (i.e., when i=2), the correspondingThe value of (2) falls into [ -768, -513]。
TABLE 5 GSCN offset relationship
It can be understood that the specific values of the subcarrier spacing of the SSB and the subcarrier spacing of the type0-PDCCH are examples provided in the embodiments of the present application, which are not particularly limited, and those skilled in the art can know the implementation methods of other numerical situations based on the embodiments provided in the present application.
As an embodiment, the specific values of the subcarrier spacing of the SSB and the subcarrier spacing of the type0-PDCCH may be other values than 120kHz, 480kHz, 960kHz, which is not specifically limited in the embodiment of the present application.
Next, a cell broadcasting method applied to the network device 101 provided in the embodiment of the present application will be described, where the cell broadcasting method may include the following:
the synchronization signal block SSB is broadcast in the frequency band.
Specifically, in order to enable the terminal device to access the cell, the network device may generate and broadcast SSBs corresponding to each frequency domain location, and then the terminal device may search each frequency domain location in sequence according to a certain order, and receive the SSBs corresponding to the frequency domain location. When the terminal device searches for the SSB in the frequency band, it may determine whether to attempt to access the cell according to the SSB.
Similar to the cell access method in the above embodiment, in the embodiment of the present application, the minimum frequency value of the frequency band is not less than 52.6GHz, and the SSB is different from the subcarrier spacing of the corresponding type 0-PDCCH. Wherein, parameter K SSB The value of (2) can be based on the subcarrier spacing of SSB and the corresponding type0-PDCCHDifferential configuration of carrier spacing. In other words, the difference of the subcarrier spacing of SSB and the subcarrier spacing of type0-PDCCH results in the parameter K SSB Is different from the above.
It can be understood that each parameter in the SSB broadcast by the network device is consistent with the corresponding parameter in the cell access method in the above embodiment, and the parameter K is determined SSB The values of the cell access methods in the foregoing embodiments are the same, so that the embodiments of the present application will not be repeated, and those skilled in the art may know the specific implementation of the cell broadcast method in the foregoing embodiments in combination with the specific implementation of the cell access method in the foregoing embodiments.
In the above scheme, after the network device broadcasts the SSB, when the SSB searched by the terminal device is a CD-SSB, it may directly attempt to access the cell; when the SSB searched by the terminal device is NCD-SSB, the parameter K can be determined based on the difference between the subcarrier spacing of the SSB and the subcarrier spacing of the PDCCH where CORESET#0 is located SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of the SSB is different from the subcarrier spacing of the PDCCH where CORESET#0 is located, the terminal equipment can find the proper CD-SSB through configuration, so that the delay of an access cell is reduced.
Further, when parameter K SSB The value of (1) falls within [0, p]When the SSB is characterized as a cell definition CD-SSB, wherein p is a positive integer, and the value of p is determined according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH; when parameter K SSB The value of (1) falls into [ p+1, p+2q ]]When characterizing SSB as non-cell-defining NCD-SSB, wherein q is a positive integer, and the number of synchronization grids in the frequency band takes a value falling within (256× (q-1), 256×q]。
In the above scheme, when the parameter K SSB The value falls into [0, p]When the terminal equipment is characterized, the terminal equipment can directly try to access the cell based on the searched SSB; when parameter K SSB The value falls into [ p+1, p+2q ]]The characterization terminal device may be based on the parameter K SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when SSB subcarrier spacing is equal to CORESET#0When the subcarrier intervals of the PDCCH are different, the terminal equipment can find the proper CD-SSB through configuration, so that the delay of an access cell is reduced.
Further, when parameter K SSB When=p+1+i, the correspondingThe value of (2) falls within [256×i+1, 256× (i+1)]Wherein i is an integer, and 0.ltoreq.i.ltoreq.q-1,/is ≡1>Representing the frequency domain position offset of a synchronous grid where the target CD-SSB and the NCD-SSB are positioned; when parameter K SSB When =p+1+i+q, the corresponding +.>The value of (2) falls within [ -256× (i+1), - (256×i+1)]。
In the above scheme, when the parameter K SSB The value falls into [ p+1, p+2q ]]When, the frequency domain location GSCN can be based on NCD-SSB NCD-SSB Corresponding frequency domain position offsetFinding a frequency domain location GSCN corresponding to an appropriate CD-SSB CD-SSB And attempts to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of the SSB is different from the subcarrier spacing of the PDCCH where CORESET#0 is located, the terminal equipment can find the proper CD-SSB through configuration, so that the delay of an access cell is reduced.
Further, p takes on a maximum integer value less than 12/j, where j characterizes the ratio of SSB to the subcarrier spacing corresponding to the type 0-PDCCH.
Referring to fig. 6, fig. 6 is a block diagram of a cell access device according to an embodiment of the present application, where the cell access device 600 may include: a determining module 601, configured to determine whether to attempt to initiate cell access according to the searched SSB when the synchronization signal block SSB is searched in the frequency band; wherein: the minimum frequency value of the frequency band is not Less than 52.6GHz, the SSB being different from the subcarrier spacing of the corresponding type 0-physical downlink control channel type0-PDCCH, the SSB comprising a parameter K for indicating the subcarrier offset of the SSB SSB And, the parameter K SSB And the value of the (2) is configured according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH.
In the embodiment of the application, when the searched SSB is a CD-SSB, the cell can be directly tried to be accessed; when the searched SSB is NCD-SSB, the parameter K can be determined based on the difference between the subcarrier spacing of SSB and the subcarrier spacing of PDCCH where CORESET#0 is located SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where coreset#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of the access cell.
Further, the determining module 601 is specifically configured to: when the parameter K SSB The value of (1) falls within [0, p]When the SSB is determined to be a cell definition CD-SSB, demodulating the CD-SSB to try to initiate cell access, wherein p is a positive integer, and the value of p is determined according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH; when the parameter K SSB The value of (1) falls into [ p+1, p+2q ]]When determining that the SSB is non-cell-defining NCD-SSB, determining a target CD-SSB according to the NCD-SSB, demodulating the target CD-SSB to attempt to initiate cell access, wherein q is a positive integer, and the number of synchronous grids in the frequency band is as low as (256× (q-1), 256×q]。
In the embodiment of the application, when the parameter K SSB The value falls into [0, p]When the SSB is detected, the SSB can be directly used for attempting to access the cell; when parameter K SSB The value falls into [ p+1, p+2q ]]At this time, it can be based on the parameter K SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where coreset#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of the access cell.
Further, the determining module 601 is further configured to: GSCN according to the frequency domain position of the synchronous grid where the NCD-SSB is NCD-SSB And frequency domain position offset of the synchronization grid where the target CD-SSB and the NCD-SSB are locatedDetermining frequency domain location GSCN of target CD-SSB CD-SSB Wherein, said->According to the parameter K corresponding to the NCD-SSB SSB Determining a parameter PDCCH-configSIB1 of the configuration system information block 1; when the parameter K SSB When=p+1+i, the correspondingThe value of (2) falls within [256×i+1, 256× (i+1)]Wherein i is an integer, and i is more than or equal to 0 and less than or equal to q-1; when the parameter K SSB When =p+1+i+q, the corresponding +.>The value of (2) falls within [ -256× (i+1), - (256×i+1)]。
In the embodiment of the application, when the parameter K SSB The value falls into [ p+1, p+2q ]]When, the frequency domain location GSCN can be based on NCD-SSB NCD-SSB Corresponding frequency domain position offsetFinding a frequency domain location GSCN corresponding to an appropriate CD-SSB CD-SSB And attempts to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where coreset#0 is located, the terminal device can find a suitable CD-SSB, thereby reducing the delay of the access cell.
Further, p takes on a maximum integer value less than 12/j, where j characterizes a ratio of the SSB to a subcarrier spacing corresponding to the type 0-PDCCH.
Further, when the subcarrier spacing of the SSB is 480kHz and the subcarrier spacing of the corresponding type0-PDCCH is 120kHz, p=2, q=3.
Further, when the subcarrier spacing of the SSB is 960kHz and the subcarrier spacing of the corresponding type0-PDCCH is 120kHz, p=1, q=3.
Further, when the subcarrier spacing of the SSB is 960kHz and the subcarrier spacing of the corresponding type0-PDCCH is 480kHz, p=5, q=3.
Referring to fig. 7, fig. 7 is a block diagram of a cell broadcasting device according to an embodiment of the present application, where the cell broadcasting device 700 may include: a broadcasting module 701, configured to broadcast a synchronization signal block SSB in a frequency band, where: the minimum frequency value of the frequency band is not less than 52.6GHz, the SSB is different from the subcarrier interval of the corresponding type 0-physical downlink control channel type0-PDCCH, and the SSB comprises a parameter K for indicating the subcarrier offset of the SSB SSB And, the parameter K SSB And the value of the (2) is configured according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH.
In the embodiment of the application, after the network device broadcasts the SSB, when the SSB searched by the terminal device is a CD-SSB, the network device may directly attempt to access the cell; when the SSB searched by the terminal device is NCD-SSB, the parameter K can be determined based on the difference between the subcarrier spacing of the SSB and the subcarrier spacing of the PDCCH where CORESET#0 is located SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of the SSB is different from the subcarrier spacing of the PDCCH where CORESET#0 is located, the terminal equipment can find the proper CD-SSB through configuration, so that the delay of an access cell is reduced.
Further, when the parameter K SSB The value of (1) falls within [0, p]When the SSB is characterized as a cell definition CD-SSB, wherein p is a positive integer, and the value of p is determined according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH; when the parameter K SSB The value of (1) falls into [ p+1, p+2q ]]Characterizing the SSB as non-cell definedNCD-SSB, wherein q is a positive integer, and the number of synchronization grids in the frequency band falls into (256× (q-1), 256×q]。
In the embodiment of the application, when the parameter K SSB The value falls into [0, p]When the terminal equipment is characterized, the terminal equipment can directly try to access the cell based on the searched SSB; when parameter K SSB The value falls into [ p+1, p+2q ]]The characterization terminal device may be based on the parameter K SSB Find the appropriate CD-SSB and attempt to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of the SSB is different from the subcarrier spacing of the PDCCH where CORESET#0 is located, the terminal equipment can find the proper CD-SSB through configuration, so that the delay of an access cell is reduced.
Further, when the parameter K SSB When=p+1+i, the correspondingThe value of (2) falls within [256×i+1, 256× (i+1)]Wherein i is an integer, and 0.ltoreq.i.ltoreq.q-1,/is ≡1 >Characterizing the frequency domain position offset of the target CD-SSB and the synchronous grid where the NCD-SSB is positioned; when the parameter K SSB When =p+1+i+q, the corresponding +.>The value of (2) falls within [ -256× (i+1), - (256×i+1)]。
In the embodiment of the application, when the parameter K SSB The value falls into [ p+1, p+2q ]]When, the frequency domain location GSCN can be based on NCD-SSB NCD-SSB Corresponding frequency domain position offsetFinding a frequency domain location GSC corresponding to an appropriate CD-SSB NCD-SSB And attempts to access the cell. Therefore, in the frequency band higher than 52.6GHz, when the subcarrier spacing of SSB is different from the subcarrier spacing of PDCCH where CORESET#0 is located, the terminal equipment can find out the proper CD-SS by configurationB, thereby reducing the delay of the access cell.
Further, p takes on a maximum integer value less than 12/j, where j characterizes a ratio of the SSB to a subcarrier spacing corresponding to the type 0-PDCCH.
Further, when the subcarrier spacing of the SSB is 480kHz and the subcarrier spacing of the corresponding type0-PDCCH is 120kHz, p=2, q=3.
Further, when the subcarrier spacing of the SSB is 960kHz and the subcarrier spacing of the corresponding type0-PDCCH is 120kHz, p=1, q=3.
Further, when the subcarrier spacing of the SSB is 960kHz and the subcarrier spacing of the corresponding type0-PDCCH is 480kHz, p=5, q=3.
Referring to fig. 8, fig. 8 is a block diagram of an electronic device according to an embodiment of the present application, where the electronic device 800 includes: at least one processor 801, at least one communication interface 802, at least one memory 803, and at least one communication bus 804. Where communication bus 808 is used to enable direct connection communication of these components, communication interface 802 is used to communicate signaling or data with other node devices, and memory 803 stores machine readable instructions executable by processor 801. When the electronic device 800 is in operation, the processor 801 and the memory 803 communicate via the communication bus 804, and the machine readable instructions when invoked by the processor 801 perform the cell access method or cell broadcast method described above.
For example, the processor 801 of the embodiment of the present application may implement the following method by reading a computer program from the memory 803 through the communication bus 804 and executing the computer program: step S201: when SSB is searched in the frequency band, determining whether to attempt to initiate cell access according to the searched SSB.
The processor 801 may be an integrated circuit chip with signal processing capabilities. The processor 801 may be a general-purpose processor including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), and the like; but also digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Which may implement or perform the various methods, steps, and logical blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The Memory 803 may include, but is not limited to, random access Memory (Random Access Memory, RAM), read Only Memory (ROM), programmable Read Only Memory (Programmable Read-Only Memory, PROM), erasable Read Only Memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable Read Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), and the like.
It is to be understood that the configuration shown in fig. 8 is merely illustrative, and that electronic device 800 may also include more or fewer components than those shown in fig. 8, or have a different configuration than that shown in fig. 8. The components shown in fig. 8 may be implemented in hardware, software, or a combination thereof. The network device and the terminal device in the embodiments of the present application may be implemented by using electronic devices.
The embodiments of the present application also provide a computer program product, including a computer program stored on a computer readable storage medium, the computer program including computer program instructions which, when executed by a computer, are capable of performing the steps of the cell access method or the cell broadcast method of the embodiments described above, for example, including: and when the synchronous signal block SSB is searched in the frequency band, determining whether to attempt to initiate the cell access according to the searched SSB.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
Further, the units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Furthermore, functional modules in various embodiments of the present application may be integrated together to form a single portion, or each module may exist alone, or two or more modules may be integrated to form a single portion.
It should be noted that the functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM) random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (8)

1. A method of cell access, comprising:
when a synchronous signal block SSB is searched in a frequency band, determining whether to attempt to initiate cell access according to the searched SSB; wherein:
the minimum frequency value of the frequency band is not less than 52.6GHz, the SSB is different from the subcarrier interval of the corresponding type 0-physical downlink control channel type0-PDCCH, and the SSB comprises a parameter K for indicating the subcarrier offset of the SSB SSB And, the parameter K SSB The values of (1) are configured according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH;
the determining whether to attempt to initiate cell access according to the searched SSB comprises the following steps:
when the parameter K SSB The value of (1) falls within [0, p]When the SSB is determined to be a cell definition CD-SSB, demodulating the CD-SSB to try to initiate cell access, wherein p is a positive integer, and the value of p is determined according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH;
When the parameter K SSB The value of (1) falls into [ p+1, p+2q ]]When determining that the SSB is non-cell-defining NCD-SSB, determining a target CD-SSB according to the NCD-SSB, demodulating the target CD-SSB to attempt to initiate cell access, wherein q is a positive integer, and the number of synchronous grids in the frequency band is as low as (256× (q-1), 256×q]；
p takes on a maximum integer value less than 12/j, where j characterizes the ratio of the SSB to the subcarrier spacing corresponding to the type 0-PDCCH.
2. The method of claim 1, wherein the determining a target CD-SSB from the NCD-SSB comprises:
GSCN according to the frequency domain position of the synchronous grid where the NCD-SSB is NCD-SSB And frequency domain position offset of the synchronization grid where the target CD-SSB and the NCD-SSB are locatedDetermining frequency domain location GSCN of target CD-SSB CD-SSB Wherein, said->According to the parameter K corresponding to the NCD-SSB SSB Determining a parameter PDCCH-configSIB1 of the configuration system information block 1;
when the parameter K SSB When=p+1+i, the correspondingThe value of (2) falls within [256×i+1, 256× (i+1)]Wherein i is an integer, and i is more than or equal to 0 and less than or equal to q-1;
when the parameter K SSB When the value is =p+1+i+q, the corresponding value isThe value of (2) falls within [ -256× (i+1), - (256×i+1) ]。
3. A method of cell broadcast, comprising:
broadcasting a synchronization signal block SSB in a frequency band, wherein:
the minimum frequency value of the frequency band is not less than 52.6GHz, the SSB is different from the subcarrier interval of the corresponding type 0-physical downlink control channel type0-PDCCH, and the SSB comprises a parameter K for indicating the subcarrier offset of the SSB SSB And, the parameter K SSB The values of (1) are configured according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH;
when the parameter K SSB Is of the value of (2)Fall into [0, p]When the SSB is characterized as a cell definition CD-SSB, wherein p is a positive integer, and the value of p is determined according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH;
when the parameter K SSB The value of (1) falls into [ p+1, p+2q ]]When characterizing the SSB as a non-cell-defining NCD-SSB, wherein q is a positive integer, and the number of synchronization grids in the frequency band takes a value falling within (256× (q-1), 256×q]；
p takes on a maximum integer value less than 12/j, where j characterizes the ratio of the SSB to the subcarrier spacing corresponding to the type 0-PDCCH.
4. A cell broadcast method according to claim 3, characterized in that when said parameter K is SSB When=p+1+i, the correspondingThe value of (2) falls within [256×i+1, 256× (i+1)]Wherein i is an integer, and i is more than or equal to 0 and less than or equal to q-1,characterizing the frequency domain position offset of the target CD-SSB and the synchronous grid where the NCD-SSB is positioned;
when the parameter K SSB When the value is =p+1+i+q, the corresponding value isThe value of (2) falls within [ -256× (i+1), - (256×i+1)]。
5. A cell access device, comprising:
the determining module is used for determining whether to attempt to initiate cell access according to the searched SSB when the synchronous signal block SSB is searched in the frequency band; wherein:
the minimum frequency value of the frequency band is not less than 52.6GHz, the SSB is different from the subcarrier interval of the corresponding type 0-physical downlink control channel type0-PDCCH, and the SSB comprisesParameter K for indicating subcarrier offset of the SSB SSB And, the parameter K SSB The values of (1) are configured according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH;
the determining module is specifically configured to:
when the parameter K SSB The value of (1) falls within [0, p]When the SSB is determined to be a cell definition CD-SSB, demodulating the CD-SSB to try to initiate cell access, wherein p is a positive integer, and the value of p is determined according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH;
When the parameter K SSB The value of (1) falls into [ p+1, p+2q ]]When determining that the SSB is non-cell-defining NCD-SSB, determining a target CD-SSB according to the NCD-SSB, demodulating the target CD-SSB to attempt to initiate cell access, wherein q is a positive integer, and the number of synchronous grids in the frequency band is as low as (256× (q-1), 256×q]；
p takes on a maximum integer value less than 12/j, where j characterizes the ratio of the SSB to the subcarrier spacing corresponding to the type 0-PDCCH.
6. A cell broadcast apparatus, comprising:
a broadcasting module for broadcasting a synchronization signal block SSB within a frequency band, wherein:
the minimum frequency value of the frequency band is not less than 52.6GHz, the SSB is different from the subcarrier interval of the corresponding type 0-physical downlink control channel type0-PDCCH, and the SSB comprises a parameter K for indicating the subcarrier offset of the SSB SSB And, the parameter K SSB The values of (1) are configured according to the difference between the subcarrier interval of the SSB and the subcarrier interval of the corresponding type 0-PDCCH;
the broadcasting module is specifically used for:
when the parameter K SSB The value of (1) falls within [0, p]When characterizing the SSB as a cell definition CD-SSB, wherein p is a positive integer, and the value of p is based on the subcarrier spacing of the SSB and the subcarrier of the corresponding type0-PDCCH Determining the difference of the intervals;
when the parameter K SSB The value of (1) falls into [ p+1, p+2q ]]When characterizing the SSB as a non-cell-defining NCD-SSB, wherein q is a positive integer, and the number of synchronization grids in the frequency band takes a value falling within (256× (q-1), 256×q]；
p takes on a maximum integer value less than 12/j, where j characterizes the ratio of the SSB to the subcarrier spacing corresponding to the type 0-PDCCH.
7. An electronic device, comprising: a processor, a memory, and a bus;
the processor and the memory complete communication with each other through the bus;
the memory stores computer program instructions executable by the processor, the processor invoking the computer program instructions to be able to perform the cell access method of claim 1 or 2 or the cell broadcast method of claim 3 or 4.
8. A computer readable storage medium storing computer program instructions which, when executed by a computer, cause the computer to perform the cell access method of claim 1 or 2 or the cell broadcast method of claim 3 or 4.
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