WO2021259174A1

WO2021259174A1 - Determination method for random access resource, and integrated access backhaul (iab) node

Info

Publication number: WO2021259174A1
Application number: PCT/CN2021/101059
Authority: WO
Inventors: 刘进华; 王欢
Original assignee: 维沃移动通信有限公司
Priority date: 2020-06-23
Filing date: 2021-06-18
Publication date: 2021-12-30
Also published as: CN113840389B; CN113840389A

Abstract

Disclosed are a determination method for a random access resource, and an integrated access backhaul (IAB) node. The determination method for a random access resource comprises: when a parent IAB node of an IAB node to be accessed is simultaneously configured with multiple random access resources, determining a target random access resource from among the multiple random access resources, wherein the target random access resource is a random access resource available for or preferentially used by said IAB node during a first random access process of currently accessing the parent IAB node.

Description

Method for determining random access resources and self-backhauling IAB node

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 202010581098.X filed in China on June 23, 2020, the entire content of which is incorporated herein by reference.

Technical field

This application relates to the field of communications, and in particular to a method for determining random access resources and a self-backhauling IAB node.

Background technique

At present, in the New Radio (NR) system, self-backhaul (Integrated Access Backhaul, IAB) can provide extended coverage for NR cells, and can also provide capacity enhancement for NR cells. Among them, it supports User Equipment (UE). , Can also be referred to as terminal equipment) wireless access and the access node that performs wireless backhaul of data is referred to as an IAB node (IAB node, IABN). The access node that provides the wireless backhaul function for the IAB node so that the UE connects to the core network (Core Net, CN) is called the host IAB node (IAB-donornode), and wired transmission is performed between the host IAB and the core network. The UE and the access node transmit UE data through a wireless access link, and the access nodes can transmit UE data through a wireless backhaul link.

In an IAB network architecture that supports centralized unit (CU)/distributed unit (DU) separate deployment, an IAB node (IAB Node, IABN) includes DU function modules and mobile terminals (Mobile Termination, MT) functional module. Relying on the MT function module, a node to be accessed (ie IABN) can find an upstream access node (ie, parent IAB node Parent IABN, P-IABN), and establish a wireless backhaul link with the DU of the upstream access node. Among them, after an IAB node establishes a complete backhaul link, the IAB node turns on its DU function, and the DU will provide cell services, that is, the DU can provide access services for the UE. Among them, a self-backhaul loop includes a host IAB node, and the DUs of all IAB nodes in the self-backhaul loop can be connected to a CU node, that is, the CU function module of the host IAB node.

Therefore, in the process of realizing this application, the inventor found that there are at least the following problems in the prior art: currently, there is no selection mechanism for random access resources of the parent IAB node to be accessed by the IAB node to be accessed, which affects the IAB The probability of successful random access of the node, the number of IAB random access resources that need to be configured, and the delay of the random access process, etc.

Summary of the invention

The purpose of the embodiments of the present application is to provide a method for determining random access resources and self-backhauling IAB nodes, so as to solve the problem of no random access to the parent IAB node selected by the IAB node to be accessed in the prior art. The issue of the selection mechanism of input resources.

In the first aspect, an embodiment of the present application provides a method for determining random access resources, which is applied to an IAB node, and the method includes:

In the case that the parent IAB node of the IAB node to be accessed is configured with multiple random access resources at the same time, a target random access resource is determined from the multiple random access resources; wherein, the target random access resource is Random access resources that are available or preferentially used by the IAB node to be accessed in the first random access process of currently accessing the parent IAB node.

In the second aspect, an embodiment of the present application provides a self-backhauling IAB node, including:

The determining module is used to determine a target random access resource from the multiple random access resources when the parent IAB node of the IAB node to be accessed is configured with multiple random access resources at the same time; wherein, the target The random access resource is a random access resource that is available or preferentially used by the IAB node to be accessed in the first random access process of currently accessing the parent IAB node.

In the third aspect, an embodiment of the present application provides a self-backhauling IAB node, including: a memory, a processor, and a program or instruction stored on the memory and capable of running on the processor, and the program or instruction is The processor implements the steps of the method described in the first aspect when executed.

In a fourth aspect, an embodiment of the present application provides a readable storage medium storing a program or instruction on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

In the embodiment of the present application, when the parent IAB node selected by the IAB node to be accessed is configured with multiple random access resources at the same time, the IAB node to be accessed may first select the multiple random access resources before accessing its parent IAB node. The selection is made among the access resources to determine the target random access resource that is available or can be used preferentially in the first random access process of the parent IAB node currently being accessed. In this way, by clarifying in advance the available or preferentially available target random access resources for accessing the parent IAB node, the probability of successful random access of the IAB node to be accessed, the use efficiency of random access resources, and the Reduce the delay of the random access process.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

FIG. 1 is a schematic flowchart of a method for determining random access resources in an embodiment of the present application;

2 is a schematic flowchart of a method for determining a distance-based random access resource in an embodiment of the present application;

FIG. 3 is a schematic flow chart of a method for determining random access resources based on the type of MT function module of the IAB node to be accessed in an embodiment of the present application;

FIG. 4 is a schematic flowchart of a method for determining random access resources based on historical access results of a to-be-accessed IAB node accessing a parent IAB node in an embodiment of the present application;

5 is a schematic flowchart of a method for determining random access resources based on PRACH preamble length in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a self-backhauling IAB node in an embodiment of the present application;

Fig. 7 is a schematic structural diagram of another self-backhauling IAB node in an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The terms "first" and "second" in the specification and claims of this application are used to distinguish similar objects, but not to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in a sequence other than those illustrated or described herein. In addition, "and/or" in the description and claims means at least one of the connected objects, and the character "/" generally means that the associated objects before and after are in an "or" relationship.

The technical solution of this application can be applied to various communication systems, such as: Global System of Mobile Communications (GSM), Code Division Multiple Access (CDMA) systems, and Wideband Code Division Multiple Access (GSM) systems. Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution/Enhanced Long Term Evolution (Long Term Evolution Advanced, LTE-A), NR, etc.

User-side UE can also be called terminal equipment (Mobile Terminal), mobile user equipment, etc., and can communicate with one or more core networks via a radio access network (RAN), and user equipment can be terminal equipment. Such as mobile phones (or "cellular" phones) and computers with terminal equipment. For example, they can be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices, which exchange languages and/or wireless access networks. Or data.

Network equipment, also called a base station, can be a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (evolutional Node B) in LTE , ENB or e-NodeB) and 5G base station (gNB).

The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, an embodiment of the present application provides a method for determining random access resources, which is executed by a self-backhauling IAB node, and the method includes the following process steps:

Step 101: In the case that the parent IAB node of the IAB node to be accessed is configured with multiple random access resources at the same time, a target random access resource is determined from the multiple random access resources; wherein, the target random access resource is The incoming resource is a random access resource that is available or preferentially used by the IAB node to be accessed in the first random access process of currently accessing the parent IAB node.

Optionally, the parent IAB node selected by the IAB node to be accessed is configured with multiple random access resources at the same time, including but not limited to general random access resources (for example, the random configuration of the rach-ConfigCommon parameter in 3GPP TS 38.331 v16.0.0 Access resources) and random access resources dedicated to the MT function module of the IAB node mobile terminal (for example, the random access resources configured by the rach-ConfigCommonIAB parameter in 3GPP TS 38.331 v16.0.0); further optional, general random access resources (The number can be one or more, and the number of random access resources dedicated to the MT function module of the IAB node can be one or more. Generally speaking, the physical random access channel of the general random access resource (Physical Random Access Channel) , PRACH) transmission window is relatively dense, which can provide access services for a large number of UEs; and since the number of other IAB nodes served by an IAB node will be much smaller than the number of UEs served by the IAB node, the IAB node MT function module is dedicated The PRACH transmission window of random access resources is relatively sparse.

Optionally, the parent IAB node selected by the IAB node to be accessed may include an IAB-donor node.

Optionally, in the method for determining random access resources in the embodiment of the present application, in the above step 101, the target random access resource can be determined from the multiple random access resources in different ways to ensure The required target random access resources can be accurately and smoothly accessed. Wherein, the manner of determining the target random access resource from the multiple random access resources includes but is not limited to the content recorded in the following specific embodiments.

Specific embodiment one

In this specific embodiment 1, the method of determining the target random access resource from the multiple random access resources in the foregoing step 101 is optionally:

Determine the target random access resource based on the distance between the IAB node to be accessed and the parent IAB node.

It can be understood that, considering that the self-backhauling paths of different transmission distances have different requirements for wireless transmission, in order to increase the probability of the IAB node to be accessed accessing the parent IAB node, it can be based on both the IAB node to be accessed and the parent IAB node Select the target random access resource that is available or preferentially used by the access IAB node in the first random access process of accessing the parent IAB node.

Further optionally, the foregoing step of determining the target random access resource based on the distance between the IAB node to be accessed and the parent IAB node may specifically refer to FIG. 2 and includes the following steps:

In step 201, it is determined whether the distance between the IAB node to be accessed and the parent IAB node is less than a preset distance threshold, if so, step 203 is executed, otherwise, step 205 is executed.

Step 203: Determine a second random access resource among the multiple random access resources as the target random access resource; wherein, the second random access resource is a general random access resource.

It can be understood that when the distance between the IAB node to be accessed and the parent IAB node is short, the general random access resource can be used as the random access resource available or preferentially used in the first random access process of accessing the parent IAB node. Access resources.

Step 205: Determine a third random access resource among the multiple random access resources as the target random access resource; wherein, the third random access resource is a random access resource dedicated to the MT function module of the IAB node. Into resources.

It can be understood that when the distance between the IAB node to be accessed and the parent IAB node is relatively long, the random access resource dedicated to the MT function module of the IAB node can be used as the first random access process to access the parent IAB node. Random access resources that are selected or preferentially used.

Further optionally, in this specific embodiment 1, whether the distance between the IAB node to be accessed and the parent IAB node is less than the corresponding preset distance threshold can be determined in different ways, including but not limited to at least one of the following specific ways One:

Manner 1: When at least one of the following conditions is met, it is determined that the distance between the IAB node to be accessed and the parent IAB node is less than the preset distance threshold:

The path loss of the parent IAB node measured by the IAB node to be accessed is less than a preset path loss threshold; the quality of the wireless signal from the parent IAB node measured by the IAB node to be accessed is higher than the preset signal quality Threshold.

It can be understood that, specifically, the IAB node to be accessed can measure the path loss of the parent IAB node and the quality of the wireless signal from the parent IAB node measured by the IAB node to be accessed. Whether the distance between the IAB nodes meets the condition of selecting the universal random access resource as the random access resource that is available or preferentially used in the current first random access process when the IAB node to be accessed accesses the parent IAB node. Among them, the smaller the path loss measured by the IAB node to be accessed from the parent IAB node and/or the higher the quality of the wireless signal from the parent IAB node measured by the IAB node to be accessed, indicates that the IAB node to be accessed and the parent IAB node The more suitable the distance between the universal random access resources is to use the universal random access resource as the condition of the random access resource that is available or preferentially used in the current first random access process when the IAB node to be accessed accesses the parent IAB node.

Further optionally, it can be done through Reference Signal Received Power (RSRP), Received Signal Strength Indication (RSSI), Reference Signal Received Quality (RSRQ), and Signal to Noise Ratio (RSRP). Signal Noise Ratio (SNR), Signal to Interference plus Noise Ratio (SINR), Signal-to-Interference Ratio (SIR), etc. measure the radio signal measured by the IAB node from the parent IAB node quality. Optionally, the IAB node to be accessed can obtain the above-mentioned wireless quality parameters through physical layer reference signal measurement, such as synchronization signal block (Synchronization Signal and PBCH block, SSB), physical downlink shared channel (Physical downlink shared channel, PDSCH) And at least one of channel state information (Channel State Information, CSI) reference signals (CSI Reference Signal, CSI-RS).

Manner 2: First determine the distance between the IAB node to be accessed and the parent IAB node, and further compare the determined distance with a preset distance threshold. Among them, the step of determining the distance between the IAB node to be accessed and the parent IAB node can be specifically executed as follows:

Determine the distance between the IAB node to be accessed and the parent IAB node based on the location information of the IAB node to be accessed and the location information of the parent IAB node.

It can be understood that, specifically, the distance between the two can be accurately determined according to the location information of the IAB node to be accessed and the location information of the parent IAB node, and then based on the determined distance to intuitively measure whether it satisfies the general random access resource As a condition of the random access resource that is available or preferentially used in the current first random access process of the IAB node to be accessed to the parent IAB node.

Wherein, the location information of the IAB node to be accessed and the location information of the parent IAB node may include, but are not limited to, the location information of the macro base station pre-stored in the corresponding IAB node.

Optionally, in this specific embodiment 1, at least one of the foregoing preset distance threshold and the preset signal quality threshold is configured by a centralized unit CU. Further optionally, it is configured through system messages or through operation and maintenance (Operation Administration and Maintenance, OAM) messages.

Specific embodiment two

In the second embodiment, the method of determining the target random access resource from the multiple random access resources in the above step 101 is optionally:

The target random access resource is determined based on the type of the MT function module of the mobile terminal to be connected to the IAB node.

It can be understood that, considering that the type of the MT function module of the mobile terminal of the IAB node is related to the distance between the IAB node and its parent IAB node, you can choose to access the IAB node based on the type of the MT function module to be connected to the IAB node. The target random access resource available or preferentially used in the first random access process of accessing the parent IAB node.

Among them, the IAB node whose MT function module type is wide-area MT (wide-area MT) is the farthest away from its parent IAB node, and the IAB node whose MT function module type is local-areaMT (local-areaMT) is the farthest distance from its parent IAB node. The distance between the nodes is the closest, and the IAB node whose MT function module type is a medium-range MT (medium-range MT) is in the middle distance from its parent IAB node.

Further optionally, the above step of determining the target random access resource based on the type of the MT function module of the mobile terminal to be connected to the IAB node may specifically refer to FIG. 3, which includes the following steps:

Step 301: Determine the type of the MT function module to be connected to the IAB node.

Step 303: If the type of the MT function module of the IAB node to be accessed is a local area MT, determine a fourth random access resource among the multiple random access resources as the target random access resource; Wherein, the fourth random access resource is a general random access resource.

Step 305: If the type of the MT function module of the IAB node to be accessed is wide area MT, determine the fifth random access resource among the multiple random access resources as the target random access resource; Wherein, the fifth random access resource is a random access resource dedicated to the MT function module of the IAB node.

Step 307: If the type of the MT function module of the IAB node to be accessed is a medium domain MT, a sixth random access resource from the multiple random access resources is determined as the target random access resource ; Wherein, the sixth random access resource is a general random access resource or a random access resource dedicated to the MT function module of the IAB node.

Further optionally, the aforementioned sixth random access resource includes one of the following:

(a) Random access resources determined based on the judgment of the node to be accessed. That is to say, when the type of the MT function module of the IAB node to be accessed is a medium domain MT, the IAB node to be accessed can determine by itself to select the one that is available or preferential in the first random access process of accessing the parent IAB node. The target random access resource used.

(b) The earliest available random access resource. That is to say, when the type of the MT function module of the IAB node to be accessed is the medium domain MT, the earliest available random access resource can be selected as the first available or preferential use during the first random access process of accessing the parent IAB node The target random access resource.

It should be noted that when the type of the MT function module of the IAB node to be accessed is the medium domain MT, in addition to the above two methods (a) and (b), the IAB node to be accessed can also choose to be connected according to other methods. Into the target random access resource available or preferentially used in the first random access process of the parent IAB node.

Specific embodiment three

In this specific embodiment 3, the method of determining the target random access resource from the multiple random access resources in the foregoing step 101 is optionally:

Determine the target random access resource based on the first random access resource used by the IAB node to be accessed in the second random access process of accessing the parent IAB node; wherein, the second random access resource The access process is located before the first random access process in time domain order, and the first random access resource is a general random access resource.

It can be understood that, in this specific embodiment, the random access resource that is available or preferentially used during random access again is determined based on the fallback or statistical method.

Further optionally, the foregoing step of determining the target random access resource based on the first random access resource used by the to-be-accessed IAB node in the second random access process of accessing the parent IAB node , Can refer to Figure 4 specifically, including the following steps:

Step 401: Determine whether the IAB node to be accessed successfully uses the first random access resource to access the parent IAB node in the second random access process, if yes, go to step 403, otherwise step 405 .

Step 403: Determine the first random access resource as the target random access resource.

Further optionally, in the case that the first random access resource is determined to be the target random access resource, the physical random access channel PRACH preamble length of the target random access resource is greater than or It is equal to the PRACH preamble length of the first random access resource.

It can be understood that when the IAB node to be accessed has successfully accessed the currently selected parent IAB node through the universal random access resource, the IAB node to be accessed can use or preferentially use the universal random access resource to initiate the parent IAB node. Random access process of IAB node. Further optionally, in the random access process where the IAB node to be accessed currently accesses the parent IAB node, the PRACHpreamble length of the available general random access resource is not shorter than the general random access resource used during the previous successful access The length of the PRACHpreamble.

Step 405: Determine a seventh random access resource among the multiple random access resources as the target random access resource; wherein, the seventh random access resource is a random access resource dedicated to the MT function module of the IAB node. Into resources.

It can be understood that when the IAB node to be accessed tries to access its selected parent IAB node through the general random access resource, but fails to access, the IAB node to be accessed can use or preferentially use the MT function of the IAB node The random access resource dedicated to the module initiates a random access process to the parent IAB node.

Further optionally, when the configuration of the general random access resource changes, for example, when the length of the PRACH preamble of the general random access resource changes, the IAB node can re-determine the available ones according to the method shown in the third embodiment. Or preferentially used random access resources.

Specific embodiment four

In this specific embodiment 4, the method of determining the target random access resource from the multiple random access resources in the foregoing step 101 is optionally:

Determine the target random access resource based on the target configuration of the multiple random access resources.

Further optionally, the foregoing step of determining the target random access resource based on the target configuration of the multiple random access resources may specifically refer to FIG. 5, which includes the following steps:

Step 501: Determine whether the PRACH preamble length of the eighth random access resource among the multiple random access resources is greater than the PRACH preamble length of the ninth random access resource among the multiple random access resources, if If not, go to step 503, otherwise go to step 505.

Step 503: Determine the ninth random access resource as the target random access resource; wherein, the eighth random access resource is a random access resource dedicated to the MT function module of the IAB node, and the ninth random access resource The access resources are general random access resources.

Step 505: Determine the eighth random access resource as the target random access resource.

It can be understood that if the length of the PRACH preamble of the random access resource dedicated to the IAB node MT function module configured by the parent IAB node selected by the IAB node to be accessed is not longer than the length of the PRACH preamble of the general random access resource, the access The IAB node selects the universal random access resource as the target random access resource available or preferentially used in the current first random access process of the parent IAB node; otherwise, the IAB node to be accessed selects the dedicated IAB node MT function module The random access resource is used as the target random access resource that is available or preferentially used in the current first random access process of accessing the parent IAB node.

Specific embodiment five

In the fifth specific embodiment, the method of determining the target random access resource from the multiple random access resources in the foregoing step 101 is optionally:

The earliest available resource among the multiple random access resources is determined as the target random access resource.

It can be understood that when the IAB node to be accessed determines that both general random access resources and random access resources dedicated to the MT function module of the IAB node can be used, the IAB node to be accessed can choose the earliest available (or arrive) The random access resource is used as the target random access resource that is available or preferentially used in the current first random access process of accessing the parent IAB node, so as to minimize the random access delay.

Referring to FIG. 6, an embodiment of the present application provides a self-backhauling IAB node 600, and the IAB node 600 includes:

The determining module 601 is configured to determine a target random access resource from the multiple random access resources when the parent IAB node of the IAB node to be accessed is configured with multiple random access resources at the same time; wherein, the The target random access resource is a random access resource that is available or preferentially used by the IAB node to be accessed in the first random access process of currently accessing the parent IAB node.

Optionally, in the IAB node 600 of the embodiment of the present application, the above determining module 601 may be specifically configured to determine the target random access resource from the multiple random access resources in one of the following ways:

Determine the target random access resource based on the distance between the IAB node to be accessed and the parent IAB node; determine the target random access resource based on the type of the mobile terminal MT function module of the IAB node to be accessed Access resources; determine the target random access resource based on the first random access resource used by the IAB node to be accessed in the second random access process of accessing the parent IAB node; wherein The second random access process is located before the first random access process in time domain order, and the first random access resource is a general random access resource; based on the target configuration of the multiple random access resources, Determining the target random access resource; determining the earliest available resource among the multiple random access resources as the target random access resource.

Optionally, in the IAB node 600 of the embodiment of the present application, the above determining module 601 may be specifically used for:

If the distance between the IAB node to be accessed and the parent IAB node is less than a preset distance threshold, determine a second random access resource among the multiple random access resources as the target random access resource ; If the distance between the IAB node to be accessed and the parent IAB node is greater than or equal to the preset distance threshold, the third random access resource among the multiple random access resources is determined as the Target random access resource; wherein, the second random access resource is a general random access resource, and the third random access resource is a random access resource dedicated to the MT function module of the IAB node mobile terminal.

Optionally, in the IAB node 600 of the embodiment of the present application, the above determining module 601 may be specifically configured to determine the IAB node to be accessed and the parent IAB node when at least one of the following conditions is satisfied The distance between is less than the preset distance threshold:

Optionally, in the IAB node 600 of the embodiment of the present application, at least one of the foregoing preset distance threshold and the preset signal quality threshold is configured by a centralized unit CU.

If the type of the MT function module of the IAB node to be accessed is a local area MT, the fourth random access resource among the multiple random access resources is determined as the target random access resource; The type of the MT function module of the IAB node to be accessed is wide area MT, then the fifth random access resource among the multiple random access resources is determined as the target random access resource; if the to be accessed If the type of the MT function module of the IAB node is a medium domain MT, the sixth random access resource from the multiple random access resources will be determined as the target random access resource; wherein, the fourth random access resource The incoming resource is a general random access resource, the fifth random access resource is a random access resource dedicated to an IAB node MT function module, and the sixth random access resource is a general random access resource or an IAB node MT function module Dedicated random access resources.

Optionally, in the IAB node 600 of the embodiment of the present application, the sixth random access resource includes one of the following: a random access resource determined based on the judgment of the node to be accessed; the earliest available random access resource .

If the IAB node to be accessed successfully uses the first random access resource to access the parent IAB node in the second random access process, the first random access resource is determined to be the Target random access resource; if the IAB node to be accessed fails to access the parent IAB node by using the first random access resource in the second random access process, then the multiple random accesses The seventh random access resource in the incoming resources is determined as the target random access resource; wherein, the seventh random access resource is a random access resource dedicated to the MT function module of the IAB node.

Optionally, in the IAB node 600 of the embodiment of the present application, in the case where the above-mentioned first random access resource is determined as the target random access resource, the physical random access channel of the target random access resource The PRACH preamble length is greater than or equal to the PRACH preamble length of the first random access resource.

If the PRACH preamble length of the eighth random access resource in the multiple random access resources is less than or equal to the PRACH preamble length of the ninth random access resource in the multiple random access resources, then all The ninth random access resource is determined to be the target random access resource; if the PRACH preamble length of the eighth random access resource is greater than the PRACH preamble length of the ninth random access resource, then the The eighth random access resource is determined as the target random access resource; wherein, the eighth random access resource is a random access resource dedicated to the MT function module of the IAB node, and the ninth random access resource is a general random access resource. Access resources.

It can be understood that the IAB node 600 provided in the embodiments of the present application can implement the aforementioned method for determining random access resources performed by the IAB node 600, and the relevant descriptions about the method for determining random access resources are all applicable to the IAB node 600, here No longer.

Please refer to FIG. 7. FIG. 7 is a structural diagram of a self-backhauling IAB node applied in an embodiment of the present invention, which can implement the details of the random access resource determination method in the foregoing embodiment and achieve the same effect. As shown in Figure 7, the self-backhauling IAB node 700 includes: a processor 701, a transceiver 702, a memory 703, a user interface 704, and a bus interface 705, where:

In the embodiment of the present invention, the self-backhauling IAB node 700 further includes: a computer program that is stored in the memory 703 and can run on the processor 701, and the computer program is executed by the processor 701 to implement the following steps:

In FIG. 7, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 701 and various circuits of the memory represented by the memory 703 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface 705 provides an interface. The transceiver 702 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium. For different user equipment, the user interface 704 may also be an interface capable of connecting externally and internally with the required equipment. The connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 can store data used by the processor 701 when performing operations.

Preferably, the embodiment of the present application also provides a self-backhauling IAB node, including a processor, a memory, a program or instruction stored on the memory and running on the processor, when the program or instruction is executed by the processor Each process of the foregoing random access resource determination method embodiment is implemented, and the same technical effect can be achieved. In order to avoid repetition, details are not repeated here.

The embodiment of the present application also provides a readable storage medium storing a program or instruction on the readable storage medium, and when the program or instruction is executed by a processor, each process of the foregoing random access resource determination method embodiment is realized, and To achieve the same technical effect, in order to avoid repetition, I will not repeat them here.

Wherein, the processor is the processor in the self-backhauling IAB node described in the foregoing embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks, or optical disks.

It should be noted that in this article, the terms "including", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. The function is performed, for example, the described method may be performed in an order different from the described order, and various steps may also be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of this application, many forms can be made without departing from the purpose of this application and the scope of protection of the claims, all of which fall within the protection of this application.

Claims

A method for determining random access resources is applied to a self-backhauling IAB node, and the method includes:

In the case where the parent IAB node of the IAB node to be accessed is configured with multiple random access resources at the same time, determining the target random access resource from the multiple random access resources;

Wherein, the target random access resource is a random access resource that is available or preferentially used by the IAB node to be accessed in the first random access process of currently accessing the parent IAB node.
The method according to claim 1, wherein the method of determining the target random access resource from the multiple random access resources includes at least one of the following:

Determine the target random access resource based on the distance between the IAB node to be accessed and the parent IAB node;

Determine the target random access resource based on the type of the MT function module of the mobile terminal to be connected to the IAB node;

Determine the target random access resource based on the first random access resource used by the IAB node to be accessed in the second random access process of accessing the parent IAB node; wherein, the second random access resource The access process is located before the first random access process in time domain order, and the first random access resource is a general random access resource;

Determining the target random access resource based on the target configuration of the multiple random access resources;

The earliest available resource among the multiple random access resources is determined as the target random access resource.
The method according to claim 2, wherein the determining the target random access resource based on the distance between the IAB node to be accessed and the parent IAB node comprises:

If the distance between the IAB node to be accessed and the parent IAB node is less than a preset distance threshold, determine a second random access resource among the multiple random access resources as the target random access resource ；

If the distance between the IAB node to be accessed and the parent IAB node is greater than or equal to the preset distance threshold, a third random access resource among the multiple random access resources is determined as the target Random access resources;

Wherein, the second random access resource is a general random access resource, and the third random access resource is a random access resource dedicated to the MT function module of the mobile terminal of the IAB node.
The method according to claim 3, wherein, when at least one of the following conditions is satisfied, it is determined that the distance between the IAB node to be accessed and the parent IAB node is less than the preset distance threshold:

The path loss of the parent IAB node measured by the IAB node to be accessed is less than a preset path loss threshold;

The quality of the wireless signal from the parent IAB node measured by the IAB node to be accessed is higher than a preset signal quality threshold.
The method according to claim 4, wherein at least one of the preset distance threshold and the preset signal quality threshold is configured by a centralized unit CU.
The method according to claim 3, wherein the method further comprises:

Determine the distance between the IAB node to be accessed and the parent IAB node based on the location information of the IAB node to be accessed and the location information of the parent IAB node.
The method according to claim 2, wherein the determining the target random access resource based on the type of the MT function module of the IAB node to be accessed includes:

If the type of the MT function module of the IAB node to be accessed is a local area MT, determining a fourth random access resource among the multiple random access resources as the target random access resource;

If the type of the MT function module of the IAB node to be accessed is a wide area MT, determining a fifth random access resource among the multiple random access resources as the target random access resource;

If the type of the MT function module of the IAB node to be accessed is a medium domain MT, a sixth random access resource from the multiple random access resources is determined as the target random access resource;

Wherein, the fourth random access resource is a general random access resource, the fifth random access resource is a random access resource dedicated to the MT function module of the IAB node, and the sixth random access resource is a general random access resource. Incoming resources or random access resources dedicated to the MT function module of the IAB node.
The method according to claim 7, wherein the sixth random access resource comprises one of the following:

Random access resources determined based on the judgment of the node to be accessed;

The earliest available random access resource.
The method according to claim 2, wherein said determining said based on the first random access resource used by said to-be-accessed IAB node in the second random access process of accessing said parent IAB node Target random access resources, including:

If the IAB node to be accessed successfully uses the first random access resource to access the parent IAB node in the second random access process, the first random access resource is determined to be the Target random access resources;

If the IAB node to be accessed fails to access the parent IAB node by using the first random access resource in the second random access process, the seventh random access resource among the multiple random access resources The random access resource is determined as the target random access resource;

Wherein, the seventh random access resource is a random access resource dedicated to the MT function module of the IAB node.
The method according to claim 9, wherein, in the case that the first random access resource is determined as the target random access resource, the physical random access channel PRACH preamble of the target random access resource The length is greater than or equal to the PRACH preamble length of the first random access resource.
The method according to claim 2, wherein the determining the target random access resource based on the target configuration of the multiple random access resources comprises:

If the PRACH preamble length of the eighth random access resource in the multiple random access resources is less than or equal to the PRACH preamble length of the ninth random access resource in the multiple random access resources, then all The ninth random access resource is determined to be the target random access resource;

If the PRACH preamble length of the eighth random access resource is greater than the PRACH preamble length of the ninth random access resource, determining the eighth random access resource as the target random access resource;

Wherein, the eighth random access resource is a random access resource dedicated to the MT function module of the IAB node, and the ninth random access resource is a general random access resource.
A self-backhauling IAB node, including:

A determining module, configured to determine a target random access resource from the multiple random access resources when the parent IAB node of the IAB node to be accessed is configured with multiple random access resources at the same time;

Wherein, the target random access resource is a random access resource that is available or preferentially used by the IAB node to be accessed in the first random access process of currently accessing the parent IAB node.
The IAB node according to claim 12, wherein the determining module is specifically configured to determine the target random access resource from the multiple random access resources in one of the following ways:

Determine the target random access resource based on the distance between the IAB node to be accessed and the parent IAB node;

Determine the target random access resource based on the type of the MT function module of the mobile terminal to be connected to the IAB node;

Determine the target random access resource based on the first random access resource used by the IAB node to be accessed in the second random access process of accessing the parent IAB node; wherein, the second random access resource The access process is located before the first random access process in time domain order, and the first random access resource is a general random access resource;

Determining the target random access resource based on the target configuration of the multiple random access resources;

The earliest available resource among the multiple random access resources is determined as the target random access resource.
The IAB node according to claim 13, wherein the determining module is specifically configured to:

If the distance between the IAB node to be accessed and the parent IAB node is less than a preset distance threshold, determine a second random access resource among the multiple random access resources as the target random access resource ；

If the distance between the IAB node to be accessed and the parent IAB node is greater than or equal to the preset distance threshold, a third random access resource among the multiple random access resources is determined as the target Random access resources;

Wherein, the second random access resource is a general random access resource, and the third random access resource is a random access resource dedicated to the MT function module of the mobile terminal of the IAB node.
The IAB node according to claim 14, wherein the determining module is specifically configured to determine that the distance between the IAB node to be accessed and the parent IAB node is less than The preset distance threshold:

The path loss of the parent IAB node measured by the IAB node to be accessed is less than a preset path loss threshold;

The quality of the wireless signal from the parent IAB node measured by the IAB node to be accessed is higher than a preset signal quality threshold.
The IAB node according to claim 15, wherein at least one of the preset distance threshold and the preset signal quality threshold is configured by a centralized unit CU.
The IAB node according to claim 13, wherein the determining module is specifically configured to:

Determine the distance between the IAB node to be accessed and the parent IAB node based on the location information of the IAB node to be accessed and the location information of the parent IAB node.
The IAB node according to claim 13, wherein the determining module is specifically configured to:

If the type of the MT function module of the IAB node to be accessed is a local area MT, determining a fourth random access resource among the multiple random access resources as the target random access resource;

If the type of the MT function module of the IAB node to be accessed is a wide area MT, determining a fifth random access resource among the multiple random access resources as the target random access resource;

If the type of the MT function module of the IAB node to be accessed is a medium domain MT, a sixth random access resource from the multiple random access resources is determined as the target random access resource;

Wherein, the fourth random access resource is a general random access resource, the fifth random access resource is a random access resource dedicated to the MT function module of the IAB node, and the sixth random access resource is a general random access resource. Incoming resources or random access resources dedicated to the MT function module of the IAB node.
The IAB node according to claim 18, wherein the sixth random access resource comprises one of the following:

Random access resources determined based on the judgment of the node to be accessed;

The earliest available random access resource.
The IAB node according to claim 13, wherein the determining module is specifically configured to:

If the IAB node to be accessed successfully uses the first random access resource to access the parent IAB node in the second random access process, the first random access resource is determined to be the Target random access resources;

If the IAB node to be accessed fails to access the parent IAB node by using the first random access resource in the second random access process, the seventh random access resource among the multiple random access resources The random access resource is determined as the target random access resource;

Wherein, the seventh random access resource is a random access resource dedicated to the MT function module of the IAB node.
The IAB node according to claim 20, wherein when the first random access resource is determined to be the target random access resource, a physical random access channel PRACH preamble of the target random access resource The code length is greater than or equal to the PRACH preamble length of the first random access resource.
The IAB node according to claim 13, wherein the determining module is specifically configured to:

If the PRACH preamble length of the eighth random access resource in the multiple random access resources is less than or equal to the PRACH preamble length of the ninth random access resource in the multiple random access resources, then all The ninth random access resource is determined to be the target random access resource;

If the PRACH preamble length of the eighth random access resource is greater than the PRACH preamble length of the ninth random access resource, determining the eighth random access resource as the target random access resource;

Wherein, the eighth random access resource is a random access resource dedicated to the MT function module of the IAB node, and the ninth random access resource is a general random access resource.
A self-backhauling IAB node, including: a memory, a processor, and a program or instruction that is stored on the memory and can run on the processor. When the program or instruction is executed by the processor, the The steps of the method described in any one of claims 1 to 11.
A readable storage medium storing a program or instruction on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method according to any one of claims 1 to 11 are realized.
A self-backhauling IAB node configured to execute the method for determining random access resources according to any one of claims 1 to 11.
A computer software product, the computer software product is stored in a non-volatile storage medium, and the software product is configured to be executed by at least one processor to implement the computer software product according to any one of claims 1-11 Steps of the method for determining random access resources