CN115696501B

CN115696501B - Cell access method and device

Info

Publication number: CN115696501B
Application number: CN202211311410.9A
Authority: CN
Inventors: 李秀文; 刘碧波; 景杰
Original assignee: Shanghai Sany Electronic Technology Co ltd
Current assignee: Shanghai Sany Electronic Technology Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-05-30
Anticipated expiration: 2042-10-25
Also published as: CN115696501A

Abstract

The invention discloses a cell access method and device. Wherein the method comprises the following steps: receiving a synchronous signal and determining the frequency domain position of the synchronous signal; judging whether the frequency domain position falls into a first frequency band range or not; acquiring a second frequency band range associated with the first frequency band range under the condition that the frequency domain position falls into the first frequency band range; judging whether the second frequency range is a first uplink frequency range in a second frequency range combination configured by the first base station; under the condition that the second frequency range is a first uplink frequency range configured by the first base station, acquiring types of a synchronizing signal and a broadcast information block SSB in the synchronizing signal; based on the type of SSB, the first cell is accessed. The invention solves the technical problems of resource congestion or overlarge load of a certain cell when the terminal accesses to the cell under the subordinate of the base station.

Description

Cell access method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a cell access method and apparatus.

Background

In the related art, for communication under different scenes on the well and under the well, network deployment is generally performed in a 'one-network' mode, that is, base stations on the well and under the well are located in the same network, frequency bands supported by the base stations or terminals are different, and when the terminals access the base stations, the phenomenon of resource congestion or load increase of a certain cell is easy to occur.

Therefore, there is a technical problem in the related art that resources are congested when a terminal accesses a cell under a base station, or that a load of a certain cell is excessive.

In view of the above problems, no effective solution has been proposed at present.

Disclosure of Invention

The embodiment of the invention provides a cell access method and a cell access device, which are used for at least solving the technical problems of resource congestion or overlarge load of a certain cell when a terminal accesses a cell under a base station.

According to an aspect of an embodiment of the present invention, there is provided a cell access method, including: receiving a synchronous signal and determining the frequency domain position of the synchronous signal; judging whether the frequency domain position falls into a first frequency band range, wherein the first frequency band range is a first downlink frequency band in a first frequency band combination configured by a terminal; under the condition that the frequency domain position falls into a first frequency band range, acquiring a second frequency band range associated with the first frequency band range, wherein the second frequency band range is a first uplink frequency band corresponding to a first downlink frequency band configured by a terminal; judging whether the second frequency range is a first uplink frequency range in a second frequency range combination configured by a first base station, wherein the first base station allows a terminal to access a first cell; under the condition that the second frequency range is a first uplink frequency range configured by the first base station, acquiring types of a synchronizing signal and a broadcast information block SSB in the synchronizing signal; based on the type of SSB, the first cell is accessed.

Optionally, the method further comprises: judging whether the second frequency range is a second uplink frequency range in a third frequency range combination of the second base station or not under the condition that the second frequency range is not the first uplink frequency range in the second target frequency range combination configured by the first base station, wherein the second base station prohibits the terminal from accessing the second cell; under the condition that the second frequency range is a second uplink frequency range configured by a second base station, prohibiting access to a second cell; the SSB in the other synchronization signal is searched for by switching to the other frequency band range than the first frequency band range.

Optionally, after receiving the synchronization signal, the method further includes: demodulating first information from the synchronization signal, wherein the first information is located in a first information block; in case the first information indicates that the terminal is allowed to access the first cell, the first cell is accessed.

Optionally, based on the type of SSB, accessing the first cell includes: under the condition that the type of SSB is SSB CD-SSB defined for a cell, cell access information is obtained from the CD-SSB; and accessing the first cell based on the cell access information.

Optionally, based on the type of SSB, accessing the first cell includes: under the condition that the SSB type is non-cell defined SSB NCD-SSB, judging whether CD-SSB exists in the first frequency range; if the CD-SSB exists in the first frequency range, demodulating the CD-SSB to obtain cell access information; the first cell is accessed based on the cell access information.

Optionally, the method further comprises: and under the condition that the frequency domain position does not fall into the first frequency band range, switching to other frequency band ranges which are not the first frequency band range to search SSB in other synchronous signals.

Optionally, the terminal and the first base station are located underground, and the second base station is located above the mine; alternatively, the terminal and the first base station are located in a mine, and the second base station is located in a mine.

According to an aspect of the embodiment of the present invention, there is also provided a cell access method, including: transmitting a synchronous signal and configuring a frequency domain position of the synchronous signal, wherein the frequency domain position falls into a first frequency range, and the first frequency range is a first downlink frequency range in a first target frequency range combination configured by a terminal; allowing the terminal to access to a first cell, wherein the terminal determines that the frequency domain position of the synchronizing signal falls into a first frequency range and a second frequency range associated with the first frequency range, the second frequency range is a first uplink frequency range in a second frequency range combination configured by the base station, the first uplink frequency range is an uplink frequency range corresponding to a first downlink frequency range configured by the terminal, the synchronizing signal is used for the terminal to access to the first cell, and the synchronizing signal is of a CD-SSB or NCD-SSB type.

Optionally, the method further comprises: the synchronization signal comprises a first information block, and first information is carried in the first information block, wherein the first information is used for indicating that the terminal is allowed to access the first cell.

According to an aspect of the embodiment of the present invention, there is also provided a cell access apparatus, including: the receiving module is used for receiving the synchronous signals and determining the frequency domain position of the synchronous signals; the first judging module is used for judging whether the frequency domain position falls into a first frequency band range, wherein the first frequency band range is a first downlink frequency band in a first frequency band combination configured by the terminal; the first acquisition module is used for acquiring a second frequency band range associated with the first frequency band range under the condition that the frequency domain position falls into the first frequency band range, wherein the second frequency band range is a first uplink frequency band corresponding to a first downlink frequency band configured by the terminal; the second judging module is used for judging whether the second frequency range is a first uplink frequency range in a second frequency range combination configured by the first base station, wherein the first base station allows the terminal to access the first cell; the second acquisition module is used for acquiring the types of the synchronous signal and the broadcast information block SSB in the synchronous signal under the condition that the second frequency range is the first uplink frequency range configured by the first base station; and the first access module is used for accessing the first cell based on the type of the SSB.

According to an aspect of the embodiment of the present invention, there is also provided a cell access apparatus, including: the transmitting module is used for transmitting the synchronous signal and configuring the frequency domain position of the synchronous signal, wherein the frequency domain position falls into a first frequency range, and the first frequency range is a first downlink frequency range in a first target frequency range combination configured by the terminal; the second access module is used for allowing the terminal to access the first cell, wherein the terminal determines that the frequency domain position of the synchronous signal falls into a first frequency range and a second frequency range associated with the first frequency range, the second frequency range is a first uplink frequency range in a second frequency range combination configured by the base station, the first uplink frequency range is an uplink frequency range corresponding to a first downlink frequency range configured by the terminal, the synchronous signal is used for the terminal to access the first cell, and the type of the synchronous signal is CD-SSB or NCD-SSB.

According to an aspect of the embodiment of the present invention, there is also provided a terminal including: a memory and a processor, the memory storing a computer program; a processor for executing a computer program stored in the memory, the computer program when run causing the processor to perform any one of the cell access methods described above.

According to an aspect of the embodiment of the present invention, there is also provided a base station including: a memory and a processor, the memory storing a computer program; a processor for executing a computer program stored in the memory, the computer program when run causing the processor to perform any one of the cell access methods described above.

According to an aspect of the embodiment of the present invention, there is further provided a computer readable storage medium, where the computer readable storage medium includes a stored program, and when the program runs, the device on which the computer readable storage medium is controlled to execute the cell access method of any one of the above.

In the embodiment of the invention, different frequency band combinations are configured by adopting different base stations, or different modes of the frequency band combinations supported by different terminal equipment are adopted, when a terminal needs to access a cell, whether the frequency domain position falls into a first frequency band range or not is judged according to the frequency domain position of a synchronous signal sent by the base station and received by the terminal, namely, whether the frequency domain position of the synchronous signal belongs to a downlink frequency band supported by the terminal is judged, and if the frequency domain position falls into the first frequency band range, a second frequency band range associated with the first frequency band range is judged, whether the frequency domain is a first uplink frequency band in the frequency band combination configured by the first base station is judged, namely, whether the frequency domain is an uplink frequency band supported by the first base station is judged, and if the frequency domain range is the first uplink frequency band configured by the base station, the uplink frequency band supported by the terminal is consistent with the downlink frequency band supported by the first base station is judged, namely, the terminal is allowed to access a cell under the first base station, and the terminal is guided to access the cell under the downlink frequency band, so that the terminal is accessed to the cell under the base station, and the cell under the situation that the cell is accessed under the cell under the well, and the situation that the terminal is accessed under the cell under the situation is accurately, and the situation that the cell is accessed under the cell is under the cell, and the cell is accessed under the situation of the cell, and the cell is realized, and the situation of the cell is high-grade of the cell is achieved, and the cell is further the technology is realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a flowchart of a cell access method one according to an embodiment of the present invention;

fig. 2 is a flow chart of a second cell access method according to an embodiment of the invention;

fig. 3 is a flowchart of a method one of a terminal for determining whether to allow access to a cell according to an alternative embodiment of the present invention;

fig. 4 is a schematic diagram of a method for a first base station to prohibit access of a second terminal according to an alternative embodiment of the present invention;

fig. 5 is a flowchart of a second method for determining whether to allow access to a cell by a terminal according to an alternative embodiment of the present invention;

fig. 6 is a block diagram of a first cell access device according to the present invention;

fig. 7 is a block diagram of a second cell access device according to the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In accordance with an embodiment of the present invention, there is provided a method embodiment of cell access, it being noted that the steps shown in the flowchart of the figures may be performed in a computer system, such as a set of computer executable instructions, and, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order other than that shown or described herein.

Fig. 1 is a flowchart of a first cell access method according to an embodiment of the present invention, as shown in fig. 1, the method includes the steps of:

step S102, receiving a synchronous signal and determining the frequency domain position of the synchronous signal;

step S104, judging whether the frequency domain position falls into a first frequency band range, wherein the first frequency band range is a first downlink frequency band in a first frequency band combination configured by a terminal;

step S106, under the condition that the frequency domain position falls into a first frequency band range, acquiring a second frequency band range associated with the first frequency band range, wherein the second frequency band range is a first uplink frequency band corresponding to a first downlink frequency band configured by the terminal;

step S108, judging whether the second frequency range is a first uplink frequency range in a second frequency range combination configured by a first base station, wherein the first base station allows a terminal to access a first cell;

step S110, under the condition that the second frequency range is the first uplink frequency range configured by the first base station, the types of the synchronous signal and the broadcast information block SSB in the synchronous signal are obtained;

step S112, based on the type of SSB, accessing the first cell.

Through the steps, when the terminal needs to access the cell, the terminal firstly judges whether the frequency domain position falls into a first frequency band range according to the frequency domain position of the synchronous signal sent by the base station, namely, judges whether the frequency domain position of the synchronous signal belongs to a downlink frequency band supported by the terminal, and then judges whether a second frequency band range associated with the first frequency band range falls into the first frequency band range or not, namely, judges whether an uplink frequency band in the frequency band combination supported by the terminal is an uplink frequency band supported by the first base station or not, and indicates that the uplink frequency band supported by the terminal is consistent with the downlink frequency band supported by the first base station under the condition that the second frequency band range is the first uplink frequency band configured by the base station.

As an alternative embodiment, the method further comprises: judging whether the second frequency range is a second uplink frequency range in a third frequency range combination of the second base station or not under the condition that the second frequency range is not the first uplink frequency range in the second target frequency range combination configured by the first base station, wherein the second base station prohibits the terminal from accessing the second cell; under the condition that the second frequency range is a second uplink frequency range configured by a second base station, prohibiting access to a second cell; the SSB in the other synchronization signal is searched for by switching to the other frequency band range than the first frequency band range. If the second frequency range is not the first uplink frequency range in the second target frequency range combination configured by the first base station, the terminal cannot send information to the first base station by using the frequency of the second frequency range, that is, the terminal cannot access the cell under the first base station, in this case, it may be continuously judged that the second frequency range belongs to the second uplink frequency range in the third frequency range combination of the second base station, if yes, the second base station prohibits the terminal from accessing the cell under the second base station, so that the terminal can be prevented from accessing the second base station by directly prohibiting the terminal from accessing the second base station, and after that, the terminal may switch to other frequency range, and continuously search for the SSB in other synchronization signals until accessing the cell under the correct base station.

As an alternative embodiment, after receiving the synchronization signal, the method further includes: demodulating first information from the synchronization signal, wherein the first information is located in a first information block; in case the first information indicates that the terminal is allowed to access the first cell, the first cell is accessed. After judging that the frequency domain position of the synchronization signal received by the terminal from the first base station belongs to a first downlink frequency band in a first frequency band combination configured by the terminal, and the first uplink frequency band configured by the terminal and corresponding to the first downlink frequency band also belongs to a first uplink frequency band in a second frequency band combination configured by the first base station, the terminal can access a cell under the first base station, wherein a first information block of the synchronization signal contains first information, and the first information is used for indicating whether the terminal is allowed to access the first cell under the first base station or not, namely, the terminal can complete the access to the first cell based on the first information.

As an alternative embodiment, accessing the first cell based on the type of SSB includes: under the condition that the type of SSB is SSB CD-SSB defined for a cell, cell access information is obtained from the CD-SSB; and accessing the first cell based on the cell access information. SSB includes both CD-SSB and NCD-SSB. In the case that the type of SSB is CD-SSB, the SSB already includes information of the cell to be accessed, that is, in the case that it is determined that the terminal is allowed to access the cell under the first base station, the access to the cell may be completed directly according to the demodulation result of the CD-SSB.

As an alternative embodiment, accessing the first cell based on the type of SSB includes: under the condition that the SSB type is non-cell defined SSB NCD-SSB, judging whether CD-SSB exists in the first frequency range; if the CD-SSB exists in the first frequency range, demodulating the CD-SSB to obtain cell access information; the first cell is accessed based on the cell access information. If the SSB type is NCD-SSB, the SSB does not include information of a cell to be accessed, but still can obtain the cell access information by judging whether the frequency domain position of the NCD-SSB belongs to the first frequency band range, if the frequency domain position of the NCD-SSB belongs to the first frequency band range, continuously judging whether the second frequency band range is the first uplink frequency band in the second frequency band combination configured by the first base station, and if the second frequency band range is the first uplink frequency band configured by the first base station, namely, if the terminal can access the cell under the first base station, acquiring the CD-SSB from the first frequency band range, and demodulating the CD-SSB to obtain the cell access information, so that the terminal can complete the cell access based on the cell access information.

As an alternative embodiment, in case the frequency domain position does not fall within the first frequency band range, switching to another frequency band range than the first frequency band range searches for SSBs in other synchronization signals. If the frequency domain position of the synchronization information does not fall into the first frequency range, it is indicated that the downlink frequency range configured by the base station sending the synchronization information is different from the downlink frequency range supported by the terminal, that is, the first base station does not allow the terminal to access, the base station can switch to other frequency ranges not in the first frequency range to search SSB in other synchronization signals, so as to determine the base station allowing the terminal to access, and complete correct access of the terminal based on SSB in the new synchronization signal.

As an alternative embodiment, the terminal and the first base station are located downhole in the mine and the second base station is located uphole in the mine; alternatively, the terminal and the first base station are located in a mine, and the second base station is located in a mine. By setting the first base station and the second base station to different scenarios, for example, uphole and downhole, respectively, it is possible to accomplish that in different communication scenarios, the terminal can correctly access the cell under the corresponding base station, for example, the terminal on the uphole only accesses the subordinate cell of the base station on the uphole and not the subordinate cell of the base station downhole, and the terminal on the downhole only accesses the subordinate cell of the base station downhole and not the subordinate cell of the base station on the uphole.

Fig. 2 is a flowchart of a second cell access method according to an embodiment of the present invention, as shown in fig. 2, the method includes the following steps:

step S202, transmitting a synchronous signal and configuring a frequency domain position of the synchronous signal, wherein the frequency domain position falls into a first frequency range, and the first frequency range is a first downlink frequency range in a first target frequency range combination configured by a terminal;

step S204, allowing the terminal to access to a first cell, wherein the terminal determines that the frequency domain position of the synchronization signal falls into a first frequency range and a second frequency range associated with the first frequency range, the second frequency range is a first uplink frequency band in a second frequency range combination configured by the base station, the first uplink frequency band is an uplink frequency band corresponding to a first downlink frequency band configured by the terminal, the synchronization signal is used for the terminal to access to the first cell, and the type of the synchronization signal is CD-SSB or NCD-SSB.

For cell access, the base station needs to perform the following steps: transmitting a synchronization signal, wherein the synchronization signal is used for determining whether the frequency domain position of the synchronization signal falls into a first frequency range by a target terminal, the first frequency range is a target downlink frequency range in a first target frequency range combination configured by the target terminal, and the target terminal is a terminal of a cell to which the base station is allowed to access; and receiving cell synchronization information sent by a target terminal to be accessed into a cell subordinate to the base station under the condition that the frequency domain position of the synchronization signal falls into a first frequency band range and a second frequency band range related to the first frequency band range is a target uplink frequency band configured by the base station, wherein the cell synchronization information is sent by the target terminal according to the type of the synchronization signal and the broadcast information block SSB in the synchronization signal.

Through the steps, the base station broadcasts and sends the configured synchronous signals, wherein the synchronous signals configured by the base station can enable the terminal receiving the synchronous signals to judge whether the downlink frequency band of the base station is the downlink frequency band supported by the terminal according to the frequency domain position of the synchronous signals, and if the judging result of the downlink frequency band is yes, the base station continues to judge whether the uplink frequency band supported by the terminal is the uplink frequency band configured by the base station, namely, the judgment of whether the terminal is allowed to be accessed into the cell under the base station is completed.

As an alternative embodiment, the method further comprises: the synchronization signal comprises a first information block, and first information is carried in the first information block, wherein the first information is used for indicating that the terminal is allowed to access the first cell.

The synchronization signal configured by the base station carries first information, wherein the first information is located in an information block different from the SSB, and the first information is used for indicating whether the target terminal is allowed to access a cell subordinate to the base station.

Based on the above embodiment and the optional embodiments, an optional implementation manner is proposed in the present invention, and is described below.

The invention provides a network configuration method under a mine, which can solve the problems that resources are blocked or the load of a certain cell is increased due to different frequency bands supported by a base station or a terminal under the configuration method of one network under the mine and the mine.

In an alternative embodiment of the invention, the uphole base station is defined as a first base station and the downhole base station is defined as a second base station. For the first base station, only the first terminal is allowed to be accessed, but the second terminal is not allowed to be accessed in the coverage area formed by all cells subordinate to the first base station; for the second base station, only the second terminal is allowed to access, but not the first terminal, within the coverage area formed by all cells under the second base station.

(1) No intersection of frequency bands supported by first and second base stations

Table 1 shows the working frequency band of the ue, and table 2 shows the frequency band combination under the "private network" in the pit, as shown in tables 1 and 2, the first base station turns off part of the frequency bands (or only supports part of the frequency bands), for example, the first base station supports all the frequency bands except n28 in table 1, while the second base station supports only all the frequency bands in table 2, and at the same time, both the first terminal and the second terminal can support all the frequency bands in tables 1 and 2.

TABLE 1

NR operating frequency band	Uplink working frequency band	Downlink operating frequency band	Duplex mode
				n1	1920MHz～1980MHz	2110MHz～2170MHz	FDD
n28	703MHz～748MHz	758MHz～803MHz	FDD
				n41	2496MHz～2690MHz	2496MHz～2690MHz	TDD
n78	3300MHz～3800MHz	3300MHz～3800MHz	TDD
				n79	4400MHz～5000MHz	4400MHz～5000MHz	TDD
n80	1710MHz～1785MHz	Without any means for	SUL
				n81	880MHz～915MHz	Without any means for	SUL
n83	703MHz～748MHz	Without any means for	SUL
				n84	1920MHz～1980MHz	Without any means for	SUL

TABLE 2

In order to avoid the problems of increasing the load of a target cell and resource congestion caused by the fact that a first terminal is accessed to any cell under a second base station (an underground base station) or a second terminal is accessed to any cell under the first base station (an underground base station), the specific scheme of the optional implementation mode of the invention is as follows.

Fig. 3 is a flowchart of a first method for determining whether to allow access to a cell by a terminal according to an alternative embodiment of the present invention, and as shown in fig. 3, there may be two kinds of procedures when the terminal determines whether to access.

The first parameter represents a synchronization signal and broadcast information block (SSB, synchronization Signal and PBCH block), the second parameter represents a system information block 1 (SIB 1, system Information Block 1), and the first frequency domain location is frequency point information of the SSB. For the frequency point information, the terminal device (the first terminal and the second terminal are collectively called) first acquires a first parameter and a first index number, such as an absolute radio frequency band number (ARFCN, absolute Radio Frequency Channel Number), or a global synchronization channel number (GSCN, global Synchronization Channel Number), wherein the ARFCN number of the first parameter is configured by an RRC parameter "abruptefrequencyssb", and the GSCN number of the first parameter is configured in advance.

In the first scheme of fig. 3, the terminal device calculates and obtains the center frequency point (i.e., the first frequency domain position) of the SSB according to the ARFCN or the GSCN, and determines whether the first frequency domain position falls into a first range, where the first range may be any downlink frequency range in table 2. If the first frequency domain position falls within the first range, the terminal device determines whether a second frequency domain range (i.e., an uplink frequency band) associated with the downlink frequency band is located in table 2, and if yes, the terminal device (e.g., a second terminal) switches to another frequency band to search for the first parameter; if not, the terminal device (e.g., the first terminal) initiates a cell access (e.g., random access) to the cell under the first base station.

In the second scheme of fig. 3, the terminal device calculates the center frequency point (i.e., the first frequency domain position) of the SSB according to the ARFCN or the GSCN, and determines whether the first frequency domain position falls into a first range, where the first range is a downlink frequency band range other than table 2. If the first frequency domain position does not fall within the first range, the terminal device judges whether a second frequency domain range (i.e. an uplink frequency band) associated with the downlink frequency band is located in table 2, if yes, the terminal device (e.g. a second terminal) switches to other frequency bands to search for the first parameter; if not, the terminal (e.g., the first terminal) initiates a cell access (e.g., random access) to the cell under the first base station.

For the first and second schemes of fig. 3, the difference is that the first range in the first scheme is the combination of the uplink and downlink frequency bands in table 2, and the first range in the second scheme is the combination of the uplink and downlink frequency bands except for table 2. The standard impact for a base station is that the base station will configure a different first range; the standard impact for the terminal device is that the terminal device will compare the first frequency domain position with a different first range and perform different operations according to different results.

Fig. 4 is a schematic diagram of a method for prohibiting access of a second terminal by a first base station according to an alternative embodiment of the present invention, as shown in fig. 4, in the method, execution flows including two parts of a base station side and a terminal side are included.

The first parameter is used for indicating whether the terminal equipment is allowed to access any cell under the first base station, the first parameter occupies N bits (N is more than or equal to 1) and is placed in the second parameter, the second parameter represents SIB1, and the third parameter is SSB.

For terminal equipment, when the terminal equipment demodulates the first parameter and the first parameter indicates that the terminal equipment is forbidden to access any cell under the base station, the terminal equipment jumps out of the frequency band and searches for synchronous signals in other frequency bands; if the first parameter demodulated by the terminal indicates that the terminal is allowed to access any cell under the base station, the terminal equipment initiates random access to any cell under the base station in the frequency band.

(2) The frequency bands supported by the first base station and the second base station are intersected

When the frequency bands supported by the first base station and the second base station have intersection, the method can be used for guiding the first terminal to access the cell under the first base station and the second terminal to access the cell under the second base station.

(3) The SSB searched by the second terminal is NCD-SSB

Fig. 5 is a flowchart of a second method for determining whether to allow access to a cell by a terminal according to an alternative embodiment of the present invention, and as shown in fig. 5, there may be two kinds of procedures when the terminal determines whether to access.

Wherein the fourth parameter represents a synchronization signal (NCD-SSB), the frequency domain position is a frequency point of the NCD-SSB, and the second terminal obtains (e.g., parameters by GSCN for the frequency point

) And according to the parameters->

And calculating and obtaining frequency points. The fifth parameter is a CD-SSB that has a certain relationship with the NCD-SSB and coexists in a frequency division multiplexing (FDM, frequency Division Multiplexing) manner, and the terminal device may determine the frequency domain location of the CD-SSB according to the frequency domain location of the NCD-SSB and the seventh parameter. The "certain relation" may be that the frequency domain position is nearest or the QCL relation is satisfied. When the CD-SSB and NCD-SSB satisfy the QCL relationship, the same is used by the terminal equipmentThe downlink receive beam direction receives the CD-SSB and the NCD-SSB. Wherein the seventh parameter is a frequency domain deviation between the frequency domain positions of the CD-SSB and the NCD-SSB.

In the first scheme of fig. 5, the terminal device calculates a center frequency point of the NCD-SSB according to the GSCN, and determines whether the center frequency point falls within a first range, where the first range is any downlink frequency range in table 2, if the frequency domain position falls within the first range, the terminal device determines whether a second frequency domain range (i.e., an uplink frequency range) associated with the downlink frequency range is located in table 2, and if yes, the terminal device obtains a fifth parameter (i.e., CD-SSB); the frequency domain position does not fall in the first range, and the terminal equipment is switched to other frequency bands to search for a sixth parameter, wherein the sixth parameter can be NCD-SSB or CD-SSB.

In the second scheme of fig. 5, the terminal device calculates a center frequency point of the NCD-SSB according to the GSCN, and determines whether a frequency domain position of the center frequency point falls within a first range, where the first range is a combination of uplink and downlink frequency bands except table 2, if the frequency domain position does not fall within the first range, the terminal device determines whether a second frequency domain range (i.e., an uplink frequency band) associated with the downlink frequency band is located in table 2, and if yes, the second terminal obtains a fifth parameter (i.e., CD-SSB); if the frequency domain position falls within the first range, the terminal device switches to other frequency bands to search for a sixth parameter, and the sixth parameter may be NCD-SSB or CD-SSB.

For the first and second schemes in fig. 5, the difference is that the first range in the first scheme is the combination of the uplink and downlink frequency bands in table 2, and the first range in the second scheme is the combination of the uplink and downlink frequency bands except for table 2. The standard impact for a base station is that the base station will configure a different first range; the standard effect on the terminal side is that the terminal device will compare the first frequency domain position with a different first range and perform different operations according to different results.

According to the method shown in fig. 5, it is possible to directly determine whether the frequency band allows access of the terminal device according to the frequency domain location of the NCD-SSB after the terminal device first searches for the NCD-SSB.

In summary, in the optional embodiment of the present invention, by determining the frequency domain position of the center frequency point of the synchronization signal, the first terminal device is only connected to the cell under the first base station, and the second terminal is only connected to the cell under the second base station, so that the load of the cells under part of the base stations is reduced by using the split mode.

According to an embodiment of the present invention, there is further provided a cell access device, and fig. 6 is a block diagram of a first cell access device provided according to the present invention, as shown in fig. 6, where the device includes: the receiving module 61, the first judging module 62, the first acquiring module 63, the second judging module 64, the second acquiring module 65 and the first accessing module 66 are explained below.

A receiving module 61, configured to receive the synchronization signal, and determine a frequency domain position where the synchronization signal is located; a first judging module 62, connected to the receiving module 61, for judging whether the frequency domain position falls into a first frequency band range, where the first frequency band range is a first downlink frequency band in a first frequency band combination configured by the terminal; a first obtaining module 63, connected to the first judging module 62, configured to obtain, when the frequency domain position falls within a first frequency band range, a second frequency band range associated with the first frequency band range, where the second frequency band range is a first uplink frequency band corresponding to a first downlink frequency band configured by the terminal; a second judging module 64, connected to the first obtaining module 63, for judging whether the second frequency range is the first uplink frequency range in the second frequency range combination configured by the first base station, where the first base station allows the terminal to access the first cell; a second obtaining module 65, connected to the second judging module 64, configured to obtain types of the synchronization signal and the broadcast information block SSB in the synchronization signal when the second frequency range is the first uplink frequency range configured by the first base station; the first access module 66 is connected to the second obtaining module 65 and is configured to access the first cell based on the SSB type.

According to an embodiment of the present invention, there is further provided a cell access device, and fig. 7 is a block diagram of a second cell access device according to the present invention, as shown in fig. 7, where the device includes: a transmitting module 71 and a second access module 72, the device will be described below.

A transmitting module 71, configured to transmit a synchronization signal and configure a frequency domain position of the synchronization signal, where the frequency domain position falls within a first frequency band range, and the first frequency band range is a first downlink frequency band in a first target frequency band combination configured by the terminal; and a second access module 72, connected to the sending module 71, configured to allow the terminal to access the first cell, where the terminal determines that the frequency domain position of the synchronization signal falls within a first frequency range and a second frequency range associated with the first frequency range, where the second frequency range is a first uplink frequency band in a second frequency range combination configured by the base station, the first uplink frequency band is an uplink frequency band corresponding to the first downlink frequency band configured by the terminal, the synchronization signal is used for the terminal to access the first cell, and the type of the synchronization signal is CD-SSB or NCD-SSB.

According to an embodiment of the present invention, there is also provided a terminal including: a memory and a processor, the memory storing a computer program; a processor for executing a computer program stored in the memory, the computer program when run causing the processor to perform any one of the cell access methods described above.

According to an embodiment of the present invention, there is also provided a base station including: a memory and a processor, the memory storing a computer program; a processor for executing a computer program stored in the memory, the computer program when run causing the processor to perform any one of the cell access methods described above.

According to an embodiment of the present invention, there is further provided a computer readable storage medium, where the computer readable storage medium includes a stored program, and when the program runs, the device where the computer readable storage medium is controlled to execute the cell access method of any one of the above.

The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be 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 interfaces, units or modules, or may be in electrical or other forms.

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

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including 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 method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. A method of cell access, comprising:

receiving a synchronous signal and determining the frequency domain position of the synchronous signal;

judging whether the frequency domain position falls into a first frequency band range or not, wherein the first frequency band range is a first downlink frequency band in a first frequency band combination configured by a terminal;

acquiring a second frequency band range associated with the first frequency band range under the condition that the frequency domain position falls into the first frequency band range, wherein the second frequency band range is a first uplink frequency band corresponding to the first downlink frequency band configured by the terminal;

judging whether the second frequency range is the first uplink frequency range in a second frequency range combination configured by a first base station, wherein the first base station allows the terminal to access a first cell;

acquiring the types of a synchronizing signal and a broadcast information block SSB in the synchronizing signal under the condition that the second frequency range is the first uplink frequency range configured by the first base station;

and accessing the first cell based on the type of the SSB.

2. The method according to claim 1, wherein the method further comprises:

judging whether the second frequency range is a second uplink frequency range in a third frequency range combination of a second base station or not under the condition that the second frequency range is not the first uplink frequency range in a second target frequency range combination configured by the first base station, wherein the second base station prohibits the terminal from accessing a second cell;

under the condition that the second frequency range is the second uplink frequency range configured by the second base station, prohibiting access to the second cell;

switching to other frequency band ranges than the first frequency band range searches SSB in other synchronous signals.

3. The method of claim 1, wherein after receiving the synchronization signal, the method further comprises:

demodulating first information from the synchronization signal, wherein the first information is located in a first information block;

and accessing the first cell in the condition that the first information indicates that the terminal is allowed to access the first cell.

4. The method of claim 1, wherein the accessing the first cell based on the type of SSB comprises:

acquiring cell access information from a cell-defined SSB (compact disc-subscriber identity module) when the SSB type is the SSB CD-SSB;

and accessing the first cell based on the cell access information.

5. The method of claim 1, wherein the accessing the first cell based on the type of SSB comprises:

judging whether a CD-SSB exists in the first frequency range or not under the condition that the SSB type is non-cell defined SSB NCD-SSB;

if the CD-SSB exists in the first frequency range, demodulating the CD-SSB to obtain cell access information;

and accessing the first cell based on the cell access information.

6. The method according to claim 1, wherein the method further comprises:

and switching to other frequency band ranges which are not in the first frequency band range to search SSB in other synchronous signals under the condition that the frequency domain position does not fall in the first frequency band range.

7. The method of claim 2, wherein the step of determining the position of the substrate comprises,

the terminal and the first base station are positioned under the mine well, and the second base station is positioned on the mine well;

or,

the terminal and the first base station are located on a mine well, and the second base station is located under the mine well.

8. A method of cell access, comprising:

transmitting a synchronous signal and configuring a frequency domain position of the synchronous signal, wherein the frequency domain position falls into a first frequency range, and the first frequency range is a first downlink frequency range in a first target frequency range combination configured by a terminal;

allowing the terminal to access a first cell, wherein the terminal determines that the frequency domain position of the synchronization signal falls into the first frequency range and a second frequency range associated with the first frequency range, the second frequency range is a first uplink frequency band in a second frequency range combination configured by a base station, the first uplink frequency band is an uplink frequency band corresponding to the first downlink frequency band configured by the terminal, the synchronization signal is used for the terminal to access the first cell, and the type of the synchronization signal is CD-SSB or NCD-SSB; wherein the CD-SSB defines SSB for a cell, and the NCD-SSB defines SSB for a non-cell.

9. The method of claim 8, wherein the method further comprises:

the synchronization signal comprises a first information block, and first information is carried in the first information block, wherein the first information is used for indicating that the terminal is allowed to access the first cell.

10. A cell access device, comprising:

the receiving module is used for receiving the synchronous signals and determining the frequency domain positions of the synchronous signals;

the first judging module is used for judging whether the frequency domain position falls into a first frequency band range, wherein the first frequency band range is a first downlink frequency band in a first frequency band combination configured by the terminal;

the first obtaining module is configured to obtain a second frequency band range associated with the first frequency band range when the frequency domain position falls within the first frequency band range, where the second frequency band range is a first uplink frequency band corresponding to the first downlink frequency band configured by the terminal;

the second judging module is used for judging whether the second frequency range is the first uplink frequency range in a second frequency range combination configured by a first base station, wherein the first base station allows the terminal to access a first cell;

a second obtaining module, configured to obtain types of a synchronization signal and a broadcast information block SSB in the synchronization signal when the second frequency range is the first uplink frequency range configured by the first base station;

and the first access module is used for accessing the first cell based on the type of the SSB.

11. A cell access device, comprising:

the device comprises a transmitting module, a receiving module and a receiving module, wherein the transmitting module is used for transmitting a synchronous signal and configuring a frequency domain position of the synchronous signal, wherein the frequency domain position falls into a first frequency range, and the first frequency range is a first downlink frequency range in a first target frequency range combination configured by a terminal;

a second access module, configured to allow the terminal to access a first cell, where the terminal determines that a frequency domain position of the synchronization signal falls into the first frequency band range and a second frequency band range associated with the first frequency band range, where the second frequency band range is a first uplink frequency band in a second frequency band combination configured by a base station, the first uplink frequency band is an uplink frequency band configured by the terminal and corresponding to the first downlink frequency band, and the synchronization signal is used for the terminal to access the first cell, and a type of the synchronization signal is CD-SSB or NCD-SSB; wherein the CD-SSB defines SSB for a cell, and the NCD-SSB defines SSB for a non-cell.