CN112970322A

CN112970322A - Information determination method, device, system, equipment and storage medium

Info

Publication number: CN112970322A
Application number: CN201980073875.5A
Authority: CN
Inventors: 贺传峰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-02-22
Filing date: 2019-02-22
Publication date: 2021-06-15
Anticipated expiration: 2039-02-22
Also published as: CN112970322B; WO2020168572A1

Abstract

The embodiment of the application provides an information determination method, an information determination device, an information determination system, information determination equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: receiving PRACH configuration information of a first physical random access channel; and determining second PRACH configuration information according to the first PRACH configuration information. The first PRACH configuration information is PRACH configuration information used by a terminal device UE, and the second PRACH configuration information is PRACH configuration information used by the first IAB base station. Because the PRACH resource corresponding to the first PRACH configuration information is different from the PRACH resource corresponding to the second PRACH configuration information, even if the first IAB base station and the second IAB base station configure the same PRACH resource, the situation that the first IAB base station receives the RACH of the UE and transmits the RACH to the second IAB on the same PRACH resource does not occur, so that the problem of resource collision can be avoided.

Description

Information determination method, device, system, equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to an information determining method, apparatus, system, device, and storage medium.

Background

An IAB (Integrated Access and Backhaul) base station integrates a wireless Access link and a wireless Backhaul link, where the wireless Access link is a communication link between a UE (User Equipment) and the IAB base station, and the wireless Backhaul link is a communication link between the IAB base station and another IAB base station, and is used for returning data.

In the random access process, the UE may access the IAB base station, and the IAB base station may access other IAB base stations. For example, the UE may send a Random Access Channel (RACH) on a corresponding PRACH resource according to PRACH configuration information sent by the first IAB base station to Access the first IAB base station. In addition, the first IAB base station may also transmit an RACH on a corresponding PRACH resource to access the second IAB base station based on PRACH configuration information transmitted by the second IAB base station.

In some embodiments, the first IAB base station and the second IAB base station may be configured with the same PRACH resource, and in this case, to avoid resource collision caused by the first IAB base station receiving RACH transmitted by the UE and transmitting RACH to the second IAB base station using the same PRACH resource, the PRACH resources configured by the first IAB base station and the second IAB base station need to be separated in a time domain. Therefore, a PRACH resource may be generally configured for all the IAB base stations in the network by a certain IAB base station in the communication system, however, the implementation method has a large implementation complexity and is difficult to implement.

Disclosure of Invention

The embodiment of the application provides an information determination method, an information determination device, an information determination system, information determination equipment and a storage medium, and can solve the problem that the related technology is difficult to implement. The specific technical scheme is as follows:

in a first aspect, an information determining method is provided, and is applied to a first IAB base station, where the method includes:

receiving PRACH configuration information of a first physical random access channel;

determining second PRACH configuration information according to the first PRACH configuration information;

the first PRACH configuration information is PRACH configuration information used by a terminal device UE, and the second PRACH configuration information is PRACH configuration information used by the first IAB base station.

Optionally, the determining, according to the first PRACH configuration information, second PRACH configuration information includes:

determining PRACH configuration information corresponding to the first PRACH configuration information from a reference PRACH configuration information set according to the first PRACH configuration information as the second PRACH configuration information;

wherein the reference PRACH configuration information set comprises PRACH configuration information which can be used by the first IAB base station.

Optionally, the determining, according to the first PRACH configuration information, PRACH configuration information having a correspondence with the first PRACH configuration information from a reference PRACH configuration information set as the second PRACH configuration information includes:

determining a corresponding second index in the reference PRACH configuration information set according to the first index of the first PRACH configuration information and the reference corresponding relation;

using the PRACH configuration information corresponding to the second index as the second PRACH configuration information;

wherein the reference correspondence is used to indicate a correspondence between an index in a PRACH configuration information set to which the first PRACH configuration information belongs and an index of the reference PRACH configuration information set.

performing time domain offset on a time unit in the first PRACH configuration information according to a reference mapping mode corresponding to the first PRACH configuration information, wherein the time unit after the time domain offset is used for determining the second PRACH configuration information;

wherein, the PRACH configuration information in the PRACH configuration information set to which the first PRACH configuration information belongs corresponds to different reference mapping manners.

Optionally, the reference mapping manner includes an extraction manner and a non-extraction manner, where the extraction manner is to perform time domain shifting on a part of time units where PRACH resources are extracted from the first PRACH configuration information, and the non-extraction manner is to perform time domain shifting on all time units where PRACH resources are extracted from the first PRACH configuration information.

Optionally, the performing, according to the reference mapping manner corresponding to the first PRACH configuration information, a time domain offset on a time unit in the first PRACH configuration information includes:

determining a reference mapping mode corresponding to the first PRACH configuration information from a reference mapping mode set, wherein the reference mapping mode set is used for recording reference mapping modes corresponding to different PRACH configuration information;

and performing time domain offset on the time unit in the first PRACH configuration information according to the determined reference mapping mode.

Optionally, the time unit includes at least one of radio frame information, subframe information, slot information, a start symbol, and a random access occasion.

Optionally, the receiving the first physical random access channel PRACH configuration information includes:

receiving system information, wherein the system information comprises the first PRACH configuration information.

In a second aspect, an information determining method is provided, and is applied to a second IAB base station, and the method includes:

sending PRACH configuration information of a first physical random access channel;

the first PRACH configuration information is PRACH configuration information used by a terminal device UE, and the second PRACH configuration information is PRACH configuration information used by a first IAB base station.

Optionally, the sending the first physical random access channel PRACH configuration information includes:

and sending system information, wherein the system information comprises the first PRACH configuration information.

In a third aspect, an information determining apparatus configured in a first IAB base station is provided, the apparatus includes:

a receiving module, configured to receive PRACH configuration information of a first physical random access channel;

a first determining module, configured to determine, according to the first PRACH configuration information, second PRACH configuration information;

Optionally, the first determining module is configured to:

Optionally, the receiving module is configured to:

In a fourth aspect, an information determination apparatus configured in a second IAB base station is provided, the apparatus including:

a sending module, configured to send PRACH configuration information of a first physical random access channel;

a second determining module, configured to determine, according to the first PRACH configuration information, second PRACH configuration information;

Optionally, the second determining module is configured to:

Optionally, the sending module is configured to:

In a fifth aspect, a communication system is provided, which includes a first access backhaul integrated IAB base station and a second IAB base station, where the first IAB base station includes the apparatus in any one of the third aspects, and the second IAB base station includes the apparatus in any one of the fourth aspects 9 to 16.

In a sixth aspect, there is provided a first IAB base station comprising a processor and a memory, the memory storing at least one instruction for execution by the processor to implement the method of any of the first aspects above.

In a seventh aspect, there is provided a second IAB base station comprising a processor and a memory, the memory storing at least one instruction for execution by the processor to implement the method of any of the above second aspects.

In an eighth aspect, a computer-readable storage medium is provided, the computer-readable storage medium having instructions stored thereon, wherein the instructions, when executed by a processor, implement the method of the first aspect.

In a ninth aspect, a computer-readable storage medium is provided, having instructions stored thereon, wherein the instructions, when executed by a processor, implement the method of the second aspect.

In a tenth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect described above.

In an eleventh aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the second aspect described above.

The technical scheme provided by the embodiment of the application has the beneficial effects that at least:

the first IAB base station receives first PRACH configuration information, and the first PRACH configuration information is used for UE to initiate RACH use. And re-determining one piece of PRACH configuration information used for the first IAB base station according to the first PRACH configuration information, wherein the PRACH resource corresponding to the first PRACH configuration information is different from the PRACH resource corresponding to the second PRACH configuration information, so that even if the first IAB base station and the second IAB base station configure the same PRACH resource, the situation that the first IAB base station receives the RACH of the UE and sends the RACH to the second IAB on the same PRACH resource does not occur, and the problem of resource conflict can be avoided. Therefore, the situation that a certain IAB base station needs to configure the PRACH for all the IAB base stations in the network is avoided, and the implementation difficulty is simplified.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of an application scenario provided by an exemplary embodiment of the present application;

FIG. 2 is a flow chart of an information indication method provided by another exemplary embodiment of the present application;

FIG. 3 is a flow chart of an information indication method provided by another exemplary embodiment of the present application;

FIG. 4 is a flow chart of an information indication method provided by another exemplary embodiment of the present application;

FIG. 5 is a flow chart of an information indicating device provided by another exemplary embodiment of the present application;

FIG. 6 is a flow chart of an information indicating device provided by another exemplary embodiment of the present application;

fig. 7 is a block diagram of a first IAB base station according to another exemplary embodiment of the present application;

fig. 8 is a block diagram of a second IAB base station according to another exemplary embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Before describing the information determining method provided by the embodiment of the present application in detail, terms, application scenarios and implementation environments related to the embodiment of the present application are briefly described.

First, terms related to the embodiments of the present application will be briefly described.

PRACH configuration information: configuration information of PRACH resources. PRACH resources configured for UE random access are defined in Rel-15NR (New Radio) technology, and include 256 configurations, and each configuration corresponds to PRACH configuration information. Each PRACH configuration information comprises a lead code format, a period, a wireless frame offset, a subframe number in a wireless frame, a starting symbol in a subframe, the number of PRACH time slots in the subframe, the number of PRACH opportunities in the PRACH time slots and the duration of the PRACH opportunities, and the time, frequency and code information of PRACH resources can be determined through the information. For example, the configuration information of PRACH resources for an unpaired spectrum of FR2(Frequency range, band 2) is shown in table 1 below, where PRACH configuration.

TABLE 1

Secondly, the application scenarios related to the embodiments of the present application are briefly introduced.

An IAB base station refers to a base station providing wireless access for a user, and generally requires a backhaul link to a core network or other IAB base stations for data backhaul. Generally, in consideration of the complexity and flexibility of deployment, the backhaul link between the IAB base station and other IAB base stations mostly employs wireless backhaul, such as microwave backhaul. With the acceleration of the 5G deployment pace, the requirements for network capacity, complexity and time delay are gradually improved, and the number of mobile base stations is gradually increased, so that the application range of wireless backhaul is gradually expanded, so that the IAB base station is more easily deployed in dense and complex scenes, and the burden of deploying a wired transmission network is reduced.

For wireless backhaul, in the random access process, due to the limitation of half duplex, an IAB base station cannot transmit an RACH to another IAB base station while receiving an RACH transmitted by a UE, that is, for the same PRACH resource, the same PRACH resource cannot be used for receiving the RACH and also used for transmitting the RACH, and therefore, the PRACH resource used for UE access and the PRACH resource used for IAB base station access need to be separated in the time domain. Therefore, the method for determining information may determine PRACH configuration information required to be used by the IAB base station according to PRACH configuration information used by the UE, that is, PRACH configuration information used by the UE is different from PRACH configuration information used by the IAB base station, so that PRACH resources used for access by the IAB base station and PRACH resources used for access by the UE are not overlapped in a time domain. For specific implementation, refer to the following embodiments.

Next, a brief description will be given of an implementation environment related to the embodiments of the present application.

Referring to fig. 1, fig. 1 is a schematic diagram illustrating an implementation environment in accordance with an example embodiment. The implementation environment may include a first IAB base station 110, a second IAB base station 120, and a UE 130. The UE130 may access the IAB base station serving itself, for example, the UE may access a first IAB base station, and the first IAB base station 110 may access a second IAB base station 120 to perform data backhaul through a wireless backhaul link with the second IAB base station 120.

After the terms, application scenarios and implementation environments related to the embodiments of the present application are described, the information determining method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flowchart of an information determining method provided by an exemplary embodiment of the present application, where the information determining method may be applied in the implementation environment shown in fig. 1, and the method may include the following implementation steps:

step 201: and the second IAB base station sends first PRACH configuration information, wherein the first PRACH configuration information is the configuration information used by the UE.

In the random access procedure, the second IAB base station may instruct the UE which PRACH resource to use to initiate RACH, and for this purpose, the second IAB base station transmits the first PRACH configuration information. Optionally, the second IAB base station may broadcast the first PRACH configuration information, that is, the second IAB base station may send the first PRACH configuration information in a broadcast manner.

Further, the sending, by the second IAB base station, the first PRACH configuration information may include: and the second IAB base station sends system information, wherein the system information comprises the first PRACH configuration information. That is, the second IAB base station may carry the first PRACH configuration information through system information. In some embodiments, the second IAB base station may broadcast system information including the first PRACH configuration information. That is, the second IAB base station may send the system information in a broadcast manner, and the system information carries the first PRACH configuration information.

For the UE served by the second IAB base station, after receiving the first PRACH configuration information, the UE may initiate an RACH on a corresponding PRACH resource according to the first PRACH configuration information, so as to access the second IAB base station.

Step 202: the first IAB base station receives the first PRACH configuration information.

In some embodiments, when the second IAB base station transmits the first PRACH configuration information in a broadcast manner, the first IAB base station may receive the first PRACH configuration information in a periodic monitoring manner, for example, may monitor the first PRACH configuration information every reference time duration, where the reference time duration may be set according to an actual requirement.

Further, the receiving, by the first IAB base station, the first PRACH configuration information may include: the first IAB base station receives system information, which includes the first PRACH configuration information. That is to say, when the second IAB base station carries the first PRACH configuration information through the system information, the first IAB base station receives the system information and reads the first PRACH configuration information from the system information.

In addition, when the second IAB base station sends the system information in a broadcast manner, the first IAB base station may receive the first PRACH configuration information in a periodic monitoring manner, for example, may monitor the system information every reference time duration, and then read the first PRACH configuration information from the system information, where the reference time duration may be set according to an actual requirement.

Step 203: and the first IAB base station determines second PRACH configuration information according to the first PRACH configuration information, wherein the second PRACH configuration information is the PRACH configuration information used by the first IAB base station.

In some embodiments, when the PRACH resources configured by the first IAB base station and the second IAB base station are the same, resource collision is easily generated when the UE accesses the first IAB base station and the first IAB base station accesses the second IAB base station. Specifically, for a UE served by a first IAB base station, it may also initiate an RACH using a PRACH resource corresponding to the first PRACH configuration information to request to access the first IAB base station, and at this time, if the first IAB base station initiates an RACH using the PRACH resource corresponding to the first PRACH configuration information to request to access a second IAB base station, the first IAB base station may cause that the RACH is both transmitted and received on the same PRACH resource, thereby causing resource collision.

Therefore, the first IAB base station re-determines a second PRACH configuration information according to the first PRACH configuration information, where the re-determined second PRACH configuration information is used for the first IAB base station to initiate an RACH, that is, the first IAB base station may initiate an RACH on a PRACH resource corresponding to the second PRACH configuration information to request to access the second IAB base station.

Since the second PRACH configuration information is different from the first PRACH configuration information, that is, the PRACH resource corresponding to the second PRACH configuration information is different from the PRACH resource corresponding to the first PRACH configuration information, even if the PRACH resources configured by the first IAB base station and the second IAB base station are the same, it can be ensured that the situation that the first IAB base station receives the RACH sent by the UE and initiates the RACH to the second IAB base station on the same PRACH resource does not occur, and the problem that the PRACH resources may overlap in the time domain is avoided.

Further, after the second IAB base station sends the first PRACH configuration information, the second PRACH configuration information may also be determined according to the first PRACH configuration information, so as to determine on which PRACH resource the RACH initiated by the first IAB base station is received. The specific implementation is the same as the implementation process of the first IAB base station determining the second PRACH configuration information according to the first PRACH configuration information.

In this embodiment of the present application, a first IAB base station receives first PRACH configuration information, where the first PRACH configuration information is used for a UE to initiate RACH usage. And re-determining one piece of PRACH configuration information used for the first IAB base station according to the first PRACH configuration information, wherein the PRACH resource corresponding to the first PRACH configuration information is different from the PRACH resource corresponding to the second PRACH configuration information, so that even if the first IAB base station and the second IAB base station configure the same PRACH resource, the situation that the first IAB base station receives the RACH of the UE and sends the RACH to the second IAB on the same PRACH resource does not occur, and the problem of resource conflict can be avoided. Therefore, the situation that a certain IAB base station needs to configure the PRACH for all the IAB base stations in the network is avoided, and the implementation difficulty is simplified.

Fig. 3 is a flowchart of an information determining method provided by another exemplary embodiment of the present application, which may be applied in the implementation environment shown in fig. 1, and the method may include the following implementation steps:

step 301: and the second IAB base station sends first PRACH configuration information, wherein the first PRACH configuration information is PRACH configuration information used by the UE.

Step 302: the first IAB base station receives the first PRACH configuration information.

In some embodiments, when the second IAB base station sends the first PRACH configuration information in a broadcast manner, the first IAB base station may receive the first PRACH configuration information in a periodic monitoring manner, for example, may monitor the first PRACH configuration information every reference time duration, where the reference time duration may be set according to an actual requirement, and where the reference time duration may be set according to an actual requirement.

In addition, when the second IAB base station sends the system information in a broadcast manner, the first IAB base station may receive the system information in a periodic monitoring manner, for example, may monitor the system information every reference time duration, and then read the first PRACH configuration information from the system information, where the reference time duration may be set according to actual requirements.

Step 303: and the first IAB base station determines the PRACH configuration information corresponding to the first PRACH configuration information from a reference PRACH configuration information set as second PRACH configuration information according to the first PRACH configuration information, wherein the second PRACH configuration information is the PRACH configuration information used by the first IAB base station.

In some embodiments, when the PRACH resources configured by the first IAB base station and the second IAB base station are the same, resource collision is easily generated when the UE accesses the first IAB base station and the first IAB base station accesses the second IAB base station. Specifically, for a UE served by a first IAB base station, it may also initiate an RACH using a PRACH resource corresponding to the first PRACH configuration information to request to access the first IAB base station, and at this time, if the first IAB base station initiates an RACH using the PRACH resource corresponding to the first PRACH configuration information to request to access a second IAB base station, the first IAB base station may cause to send and receive the RACH on the same PRACH resource, thereby causing resource collision.

In implementation, the first IAB base station may determine, according to the first PRACH configuration information, PRACH configuration information that has a correspondence with the first PRACH configuration information from a reference PRACH configuration information set, and obtain second PRACH configuration information. The reference PRACH configuration information set includes PRACH configuration information that can be used by the first IAB base station, and may be set according to actual requirements.

That is to say, in the reference PRACH configuration information set, there is PRACH configuration information corresponding to the first PRACH configuration information, so the first IAB base station may determine, from the reference PRACH configuration information set, PRACH configuration information corresponding to the first PRACH configuration information, thereby obtaining second PRACH configuration information.

In a possible implementation manner, determining, according to the first PRACH configuration information, a specific implementation of the PRACH configuration information that has a correspondence with the first PRACH configuration information from a reference PRACH configuration information set may include: and determining a corresponding second index in the reference PRACH configuration information set according to the first index of the first PRACH configuration information and the reference corresponding relation, and taking the PRACH configuration information corresponding to the second index as the second PRACH configuration information. Wherein, the reference corresponding relationship is used for indicating the corresponding relationship between the index in the PRACH configuration information set to which the first PRACH configuration information belongs and the index of the reference PRACH configuration information set.

That is, the correspondence between the index of the first PRACH configuration information and the index of the corresponding PRACH configuration information in the reference PRACH configuration information set may be indicated by referring to the correspondence. For example, assume that the PRACH configuration information set to which the first PRACH configuration information belongs is as shown in table 2 (actually, the PRACH configuration information set to which the first PRACH configuration information belongs includes the PRACH configuration information configured for UE random access in Rel-15NR technology, including 256 configurations), the reference PRACH configuration information set is as shown in table 3, the index of the first PRACH configuration information is index0, and the reference correspondence indicates that the index0 corresponds to the index10 in the reference PRACH configuration information set, at this time, the first IAB base station uses the PRACH configuration information corresponding to the index10 in the reference PRACH configuration information set as the second PRACH configuration information. TABLE 2

TABLE 3

The number of configuration information included in the reference PRACH configuration information set may be the same as the number of configuration information in the PRACH configuration information set to which the first PRACH configuration information belongs, or the number of configuration information included in the reference PRACH configuration information set may also be less than the number of configuration information in the PRACH configuration information set to which the first PRACH configuration information belongs, which specifically includes the following two cases:

in the first case: the indexes in the PRACH configuration information set to which the first PRACH configuration information belongs and the indexes of the reference PRACH configuration information set may be in a one-to-one correspondence relationship. That is to say, an index in the PRACH configuration information set to which the first PRACH configuration information belongs corresponds to a unique index in the reference PRACH configuration information set, and at this time, the number of configuration information included in the reference PRACH configuration information set is the same as the number of configuration information in the PRACH configuration information set to which the first PRACH configuration information belongs, that is, the reference PRACH configuration information set also includes 256 types of configuration information.

In the second case: the index in the PRACH configuration information set to which the first PRACH configuration information belongs may also be a many-to-one correspondence with the index of the reference PRACH configuration information set. That is to say, a plurality of indexes in the PRACH configuration information set to which the first PRACH configuration information belongs correspond to one index of the reference PRACH configuration information set, and at this time, the number of configuration information included in the reference PRACH configuration information set is less than the number of matching information in the PRACH configuration information set to which the first PRACH configuration information belongs, that is, the number of configuration information included in the reference PRACH configuration information set is less than 256.

Further, the PRACH configuration information set to which the first PRACH configuration information belongs may exist in a form of a table, and at this time, the PRACH configuration information set to which the first PRACH configuration information belongs may be referred to as a PRACH configuration information table. Similarly, the reference PRACH configuration information set may also exist in a form of a table, and at this time, the reference PRACH configuration information set may be referred to as a reference PRACH configuration information table.

Since the second PRACH configuration information is different from the first PRACH configuration information, that is, the PRACH resource corresponding to the second PRACH configuration information is different from the PRACH resource corresponding to the first PRACH configuration information, even if the PRACH resources configured by the first IAB base station and the second IAB base station are the same, it can be ensured that the situation that the first IAB base station receives the RACH sent by the UE and initiates the RACH to the second IAB base station on the same PRACH resource does not occur, and the problem that the PRACH resources may overlap in the time domain is avoided. In addition, new signaling is not required to be introduced for indicating the second PRACH configuration information, and signaling overhead is reduced.

Fig. 4 is a flowchart of an information determining method provided by another exemplary embodiment of the present application, which may be applied in the implementation environment shown in fig. 1, and the method may include the following implementation steps:

step 401: and the second IAB base station sends first PRACH configuration information, wherein the first PRACH configuration information is PRACH configuration information used by the UE.

Step 402: the first IAB base station receives first PRACH configuration information.

In some embodiments, when the second IAB base station sends the first PRACH configuration information in a broadcast manner, the first IAB base station may receive the first PRACH configuration information in a periodic monitoring manner, for example, may monitor the first PRACH configuration information every reference time duration, where the reference time duration may be set according to an actual requirement, and the reference time duration may be set according to an actual requirement.

In addition, when the second IAB base station sends the system information in a broadcast manner, the first IAB base station may receive the system information in a periodic monitoring manner, for example, the system information may be monitored every reference time duration, and then the first PRACH configuration information is read from the system information, where the reference time duration may be set according to actual requirements.

Step 403: and the first IAB base station performs time domain offset on the time unit in the first PRACH configuration information according to the reference mapping mode corresponding to the first PRACH configuration information, and uses the time unit after the time domain offset to determine second PRACH configuration information, wherein the second PRACH configuration information is the PRACH configuration information used by the first IAB base station.

In implementation, the first IAB base station performs time domain offset on the time unit in the first PRACH configuration information according to the reference mapping manner corresponding to the first PRACH configuration information, and takes the time unit after the time domain offset as the time unit in the second PRACH configuration information. In a possible implementation manner, the first IAB base station may further use configuration information, except for the time element, in the first PRACH configuration information as part of information in the second PRACH configuration information, that is, the second PRACH configuration information may include the time element after the time domain offset and other configuration information, except for the time element, in the first PRACH configuration information. Of course, the present application does not limit the specific contents of the configuration information other than the time unit after the time domain offset in the second PRACH configuration information, and for example, the configuration information may further include a part of the configuration information other than the time unit in the first PRACH configuration information.

The reference mapping mode comprises an extraction mode and a non-extraction mode, wherein the extraction mode is to extract a part of time units where the PRACH resources are located from the first PRACH configuration information to perform time domain migration, and the non-extraction mode is to perform time domain migration on all time units where the PRACH resources are located in the first PRACH configuration information.

Wherein the time unit includes at least one of radio frame information, subframe information, slot information, a start symbol, and a random access occasion.

In addition, at least two pieces of PRACH configuration information in the PRACH configuration information set to which the first PRACH configuration information belongs correspond to different reference mapping manners, so that it is possible to avoid that a reference mapping manner corresponding to a certain PRACH configuration information is not applicable to another PRACH configuration information. For example, when the interval of the time unit where the PRACH resource is located in the first PRACH configuration information is 1, if the corresponding reference mapping manner is to subtract 1 from all the time units, the obtained second PRACH configuration information and the first PRACH configuration information may overlap on the time domain, so the reference mapping manner is not applicable to the first PRACH configuration information, and different reference mapping manners may be set for at least two PRACH configuration information.

Further, a reference mapping mode corresponding to the first PRACH configuration information is determined from a reference mapping mode set, where the reference mapping mode set is used to record reference mapping modes corresponding to different PRACH configuration information; and performing time domain offset on the time unit in the first PRACH configuration information according to the determined reference mapping mode.

In a possible implementation manner, the reference mapping manner set may exist in a table form, and in this case, the reference mapping manner set may be referred to as a reference mapping manner table, for example, the reference mapping manner table may be as shown in table 4.

TABLE 4

For example, referring to table 2 and table 4, when the index of the first PRACH configuration information is index0, the corresponding reference extraction method is method 1 and the time domain offset is-1. Further, assuming that the method 1 is to extract all time slot information where PRACH resources are located from the first PRACH configuration information for time domain offset, the obtained second PRACH configuration information is as shown in the following table 5:

TABLE 5

0

A1

16

1

3,8,13,18,23,28,33,38

0

2

6

2

Further, a certain PRACH configuration information may correspond to a unique reference mapping manner, or multiple PRACH configuration information may correspond to a reference mapping manner, which is not limited in this embodiment of the present application.

It should be noted that, in another embodiment, a PRACH configuration information may also be newly defined, and a new signaling is introduced, where the introduced new signaling may be used to indicate an index of the newly defined PRACH configuration information. For example, the PRACH-configuration index-IAB information is added to the existing RACH configuration signaling to indicate a new RACH configuration index, which is an index of the newly defined PRACH configuration information. Further, it can be defined in the standard as the prach-configuration index-IAB INTEGER (0.. 255). Therefore, a set of PRACH configuration information and indication signaling used for the IAB base station is newly added, the limitation of the existing PRACH configuration information and indication signaling in a communication system can be avoided, and the flexibility of PRACH resource configuration is improved.

In addition, it should be noted that the reference time lengths in the foregoing embodiments may be the same or different, and the embodiments of the present invention do not limit this.

Fig. 5 is a block diagram of an information determining apparatus provided in another exemplary embodiment of the present application, which may be configured in a first IAB base station, and the apparatus may include:

a receiving module 510, configured to receive PRACH configuration information of a first physical random access channel;

a first determining module 520, configured to determine, according to the first PRACH configuration information, second PRACH configuration information;

Optionally, the first determining module 520 is configured to:

Optionally, the receiving module 510 is configured to:

Fig. 6 is a block diagram of an information determining apparatus provided in another exemplary embodiment of the present application, which may be configured in a second IAB base station, and the apparatus may include:

a sending module 610, configured to send PRACH configuration information of a first physical random access channel;

a second determining module 620, configured to determine, according to the first PRACH configuration information, second PRACH configuration information;

Optionally, the second determining module 620 is configured to:

Optionally, the sending module 610 is configured to:

Referring to fig. 7, a schematic structural diagram of a first IAB base station provided in an exemplary embodiment of the present application is shown, where the first IAB base station includes: a processor 701, a receiver 702, a transmitter 703, a memory 704, and a bus 705.

The processor 701 includes one or more processing cores, and the processor 701 executes various functional applications and information processing by executing software programs and modules.

The receiver 702 and the transmitter 703 may be implemented as one communication component, which may be a communication chip.

The memory 704 is coupled to the processor 701 by a bus 705.

The memory 704 may be configured to store at least one instruction, and the processor 701 is configured to execute the at least one instruction to implement the steps performed by the first IAB base station in the above-described method embodiments.

Further, the memory 704 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), Static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).

The application provides a computer-readable storage medium, wherein at least one instruction is stored in the storage medium, and the at least one instruction is loaded and executed by the processor to implement the information determination method provided by the above method embodiments.

The present application also provides a computer program product, which when run on a computer causes the computer to execute the information determination method provided by the above-mentioned method embodiments.

Please refer to fig. 8, which shows a schematic structural diagram of a second IAB base station according to an exemplary embodiment of the present application, where the second IAB base station includes: a processor 801, a receiver 802, a transmitter 803, a memory 804 and a bus 805.

The processor 801 includes one or more processing cores, and the processor 801 executes various functional applications and information processing by running software programs and modules.

The receiver 802 and the transmitter 803 may be implemented as one communication component, which may be a piece of communication chip.

The memory 804 is coupled to the processor 801 by a bus 805.

The memory 804 may be configured to store at least one instruction, and the processor 801 is configured to execute the at least one instruction to implement the steps performed by the second IAB base station in the above-described method embodiments.

Further, the memory 804 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), Static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

An information determination method applied to a first access backhaul integrated IAB base station, the method comprising:

receiving PRACH configuration information of a first physical random access channel;

determining second PRACH configuration information according to the first PRACH configuration information;

the first PRACH configuration information is PRACH configuration information used by a terminal device UE, and the second PRACH configuration information is PRACH configuration information used by the first IAB base station.
The method of claim 1, wherein the determining second PRACH configuration information based on the first PRACH configuration information comprises:

determining PRACH configuration information corresponding to the first PRACH configuration information from a reference PRACH configuration information set according to the first PRACH configuration information as the second PRACH configuration information;

wherein the reference PRACH configuration information set comprises PRACH configuration information which can be used by the first IAB base station.
The method of claim 2, wherein the determining, according to the first PRACH configuration information, PRACH configuration information having a correspondence with the first PRACH configuration information from a reference PRACH configuration information set as the second PRACH configuration information, comprises:

determining a corresponding second index in the reference PRACH configuration information set according to the first index of the first PRACH configuration information and the reference corresponding relation;

using the PRACH configuration information corresponding to the second index as the second PRACH configuration information;

wherein the reference correspondence is used to indicate a correspondence between an index in a PRACH configuration information set to which the first PRACH configuration information belongs and an index of the reference PRACH configuration information set.
The method of claim 1, wherein the determining second PRACH configuration information based on the first PRACH configuration information comprises:

performing time domain offset on a time unit in the first PRACH configuration information according to a reference mapping mode corresponding to the first PRACH configuration information, wherein the time unit after the time domain offset is used for determining the second PRACH configuration information;

wherein at least two pieces of PRACH configuration information in the PRACH configuration information set to which the first PRACH configuration information belongs correspond to different reference mapping manners.
The method of claim 4, wherein the reference mapping manner includes an extraction manner and a non-extraction manner, the extraction manner is to perform time domain shifting on a part of time units where PRACH resources are extracted from the first PRACH configuration information, and the non-extraction manner is to perform time domain shifting on all time units where PRACH resources are extracted from the first PRACH configuration information.
The method of claim 4 or 5, wherein the time domain shifting the time unit in the first PRACH configuration information according to the reference mapping manner corresponding to the first PRACH configuration information comprises:

determining a reference mapping mode corresponding to the first PRACH configuration information from a reference mapping mode set, wherein the reference mapping mode set is used for recording reference mapping modes corresponding to different PRACH configuration information;

and performing time domain offset on the time unit in the first PRACH configuration information according to the determined reference mapping mode.
The method of claim 5, wherein the time unit comprises at least one of radio frame information, subframe information, slot information, a starting symbol, and a random access occasion.
The method of any of claims 1 to 5, wherein the receiving the first physical random access channel, PRACH, configuration information comprises:

receiving system information, wherein the system information comprises the first PRACH configuration information.
An information determination method applied to a second access backhaul integrated IAB base station, the method comprising:

sending PRACH configuration information of a first physical random access channel;

determining second PRACH configuration information according to the first PRACH configuration information;

the first PRACH configuration information is PRACH configuration information used by a terminal device UE, and the second PRACH configuration information is PRACH configuration information used by a first IAB base station.
The method of claim 9, wherein the determining second PRACH configuration information based on the first PRACH configuration information comprises:

determining PRACH configuration information corresponding to the first PRACH configuration information from a reference PRACH configuration information set according to the first PRACH configuration information as the second PRACH configuration information;

wherein the reference PRACH configuration information set comprises PRACH configuration information which can be used by the first IAB base station.
The method of claim 10, wherein the determining, according to the first PRACH configuration information, PRACH configuration information having a correspondence with the first PRACH configuration information from a reference PRACH configuration information set as the second PRACH configuration information, comprises:

determining a corresponding second index in the reference PRACH configuration information set according to the first index of the first PRACH configuration information and the reference corresponding relation;

using the PRACH configuration information corresponding to the second index as the second PRACH configuration information;

wherein the reference correspondence is used to indicate a correspondence between an index in a PRACH configuration information set to which the first PRACH configuration information belongs and an index of the reference PRACH configuration information set.
The method of claim 9, wherein the determining second PRACH configuration information based on the first PRACH configuration information comprises:

performing time domain offset on a time unit in the first PRACH configuration information according to a reference mapping mode corresponding to the first PRACH configuration information, wherein the time unit after the time domain offset is used for determining the second PRACH configuration information;

wherein, the PRACH configuration information in the PRACH configuration information set to which the first PRACH configuration information belongs corresponds to different reference mapping manners.
The method of claim 12, wherein the reference mapping manners include an extraction manner and a non-extraction manner, the extraction manner is to perform time domain shifting on a part of time units where PRACH resources are extracted from the first PRACH configuration information, and the non-extraction manner is to perform time domain shifting on all time units where PRACH resources are extracted from the first PRACH configuration information.
The method of claim 12 or 13, wherein the time domain shifting the time unit in the first PRACH configuration information according to the reference mapping manner corresponding to the first PRACH configuration information includes:

determining a reference mapping mode corresponding to the first PRACH configuration information from a reference mapping mode set, wherein the reference mapping mode set is used for recording reference mapping modes corresponding to different PRACH configuration information;

and performing time domain offset on the time unit in the first PRACH configuration information according to the determined reference mapping mode.
The method of claim 13, wherein the time unit comprises at least one of radio frame information, subframe information, slot information, a starting symbol, and a random access occasion.
The method of any of claims 1-13, wherein the sending the first physical random access channel, PRACH, configuration information comprises:

and sending system information, wherein the system information comprises the first PRACH configuration information.
An information determination apparatus configured in a first IAB base station, the apparatus comprising:

a receiving module, configured to receive PRACH configuration information of a first physical random access channel;

a first determining module, configured to determine, according to the first PRACH configuration information, second PRACH configuration information;

the first PRACH configuration information is PRACH configuration information used by a terminal device UE, and the second PRACH configuration information is PRACH configuration information used by the first IAB base station.
The apparatus of claim 17, wherein the first determining module is to:

determining PRACH configuration information corresponding to the first PRACH configuration information from a reference PRACH configuration information set according to the first PRACH configuration information as the second PRACH configuration information;

wherein the reference PRACH configuration information set comprises PRACH configuration information which can be used by the first IAB base station.
The apparatus of claim 18, wherein the first determination module is to:

determining a corresponding second index in the reference PRACH configuration information set according to the first index of the first PRACH configuration information and the reference corresponding relation;

using the PRACH configuration information corresponding to the second index as the second PRACH configuration information;

wherein the reference correspondence is used to indicate a correspondence between an index in a PRACH configuration information set to which the first PRACH configuration information belongs and an index of the reference PRACH configuration information set.
The apparatus of claim 17, wherein the first determining module is to:

performing time domain offset on a time unit in the first PRACH configuration information according to a reference mapping mode corresponding to the first PRACH configuration information, wherein the time unit after the time domain offset is used for determining the second PRACH configuration information;

wherein, the PRACH configuration information in the PRACH configuration information set to which the first PRACH configuration information belongs corresponds to different reference mapping manners.
The apparatus of claim 20, wherein the reference mapping manners include an extraction manner and a non-extraction manner, the extraction manner is to perform time domain shifting on a part of time units where PRACH resources are extracted from the first PRACH configuration information, and the non-extraction manner is to perform time domain shifting on all time units where PRACH resources are extracted from the first PRACH configuration information.
The apparatus of claim 20 or 21, wherein the first determining module is to:

determining a reference mapping mode corresponding to the first PRACH configuration information from a reference mapping mode set, wherein the reference mapping mode set is used for recording reference mapping modes corresponding to different PRACH configuration information;

and performing time domain offset on the time unit in the first PRACH configuration information according to the determined reference mapping mode.
The apparatus of claim 21, wherein the time unit comprises at least one of radio frame information, subframe information, slot information, a starting symbol, and a random access occasion.
The apparatus of any one of claims 17-21, wherein the receiving module is to:

receiving system information, wherein the system information comprises the first PRACH configuration information.
An information determination apparatus configured in a second IAB base station, the apparatus comprising:

a sending module, configured to send PRACH configuration information of a first physical random access channel;

a second determining module, configured to determine, according to the first PRACH configuration information, second PRACH configuration information;

the first PRACH configuration information is PRACH configuration information used by a terminal device UE, and the second PRACH configuration information is PRACH configuration information used by the first IAB base station.
The apparatus of claim 25, wherein the second determining module is to:

determining PRACH configuration information corresponding to the first PRACH configuration information from a reference PRACH configuration information set according to the first PRACH configuration information as the second PRACH configuration information;

wherein the reference PRACH configuration information set comprises PRACH configuration information which can be used by the first IAB base station.
The apparatus of claim 26, wherein the second determining module is to:

determining a corresponding second index in the reference PRACH configuration information set according to the first index of the first PRACH configuration information and the reference corresponding relation;

using the PRACH configuration information corresponding to the second index as the second PRACH configuration information;

wherein the reference correspondence is used to indicate a correspondence between an index in a PRACH configuration information set to which the first PRACH configuration information belongs and an index of the reference PRACH configuration information set.
The apparatus of claim 25, wherein the second determining module is to:

performing time domain offset on a time unit in the first PRACH configuration information according to a reference mapping mode corresponding to the first PRACH configuration information, wherein the time unit after the time domain offset is used for determining the second PRACH configuration information;

wherein, the PRACH configuration information in the PRACH configuration information set to which the first PRACH configuration information belongs corresponds to different reference mapping manners.
The apparatus of claim 28, wherein the reference mapping manners include an extraction manner and a non-extraction manner, the extraction manner is to perform time domain shifting on a portion of time units where PRACH resources are extracted from the first PRACH configuration information, and the non-extraction manner is to perform time domain shifting on all time units where PRACH resources are extracted from the first PRACH configuration information.
The apparatus of claim 28 or 29, wherein the second determining module is to:

determining a reference mapping mode corresponding to the first PRACH configuration information from a reference mapping mode set, wherein the reference mapping mode set is used for recording reference mapping modes corresponding to different PRACH configuration information;

and performing time domain offset on the time unit in the first PRACH configuration information according to the determined reference mapping mode.
The apparatus of claim 29, wherein the time unit comprises at least one of radio frame information, subframe information, slot information, a starting symbol, and a random access occasion.
The apparatus of any one of claims 25-29, wherein the sending module is configured to:

and sending system information, wherein the system information comprises the first PRACH configuration information.
A communication system comprising a first access backhaul integrated IAB base station and a second IAB base station, the first IAB base station comprising the apparatus of any of claims 17 to 24, and the second IAB base station comprising the apparatus of any of claims 25 to 32.
A first IAB base station comprising a processor and a memory, the memory storing at least one instruction for execution by the processor to implement the method of any of claims 1 to 8.
A second IAB base station comprising a processor and a memory, the memory storing at least one instruction for execution by the processor to implement the method of any of claims 9 to 16.
A computer-readable storage medium, wherein the storage medium stores at least one instruction for execution by a processor to implement the method of any of claims 1 to 8 or to implement the method of any of claims 9 to 16.