CN111757484B

CN111757484B - Method and device for configuring information

Info

Publication number: CN111757484B
Application number: CN201910252117.1A
Authority: CN
Inventors: 袁世通; 刘凤威; 邱晶; 陈磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2024-01-02
Anticipated expiration: 2039-03-29
Also published as: CN111757484A; WO2020199765A1

Abstract

The application provides a method and a device for configuring information, wherein the method comprises the following steps: the method comprises the steps that a first node obtains a plurality of pieces of Residual Minimum System Information (RMSI), wherein part of the RMSI carries configuration information of a first random access resource, and at least part of the RMSI comprises indication information, the indication information is used for indicating time domain positions of the configuration information of the first random access resource, and the first random access resource is used for a second node to randomly access the first node; the plurality of RMSIs are transmitted periodically. According to the technical scheme, the configuration information of the first random access resource is not required to be carried in each RMSI period, and only the configuration information of the first random access resource is required to be carried in certain RMSI periods, so that resources can be saved.

Description

Method and device for configuring information

Technical Field

The present invention relates to the field of communications, and in particular, to a method and apparatus for configuring information.

Background

In the prior art, the method for the terminal equipment to acquire the random access resource is as follows: after power-on, the time domain location and frequency domain location of the remaining minimum system information (Remaining Minimum System Information, RMSI) carrying random access resource configuration information is determined by detecting the synchronization signal/physical broadcast channel block (synchronization signal block/physical broadcast channel block, SS/PBCH block). After the RMSI is detected according to the indicated location, configuration information of the random access resource may be obtained, and the network is accessed based on the random access resource indicated by the configuration information.

In the current standard discussion of 5G, an integrated access backhaul (Integrated Access and Backhaul, IAB) node (not excluding other types of devices in the future) may determine random access resources according to a procedure similar to that of a terminal device, and initiate random access.

Thus, the network device needs to broadcast the configuration information of two sets of random access resources, one set is used for the terminal device to access the network, the other set is used for the IAB node to access the network, and in all RMSIs, the configuration information of the random access resources used by the terminal device needs to be broadcast, and the configuration information of the random access resources used by the IAB needs to be broadcast, so that the signaling overhead is high.

Disclosure of Invention

The present application provides a method and an apparatus for configuring information, by only carrying configuration information of random access resources dedicated to an IAB node in a part of RMSI, and carrying indication information indicating a time domain position of the random access resource configuration information dedicated to the IAB node in at least a part of RMSI, it is not necessary to carry configuration information of random access resources dedicated to terminal equipment and dedicated to the IAB node in all RMSI, and system overhead can be reduced.

In a first aspect, a method for configuring information includes a first node generating a plurality of remaining minimum system information RMSI, where a portion of the RMSI carries configuration information of a first random access resource, and is used for an IAB node to initiate random access, and at least a portion of the RMSI includes indication information, where the indication information is used for indicating a time domain location of the configuration information of the first random access resource; the plurality of RMSIs are transmitted periodically.

In a possible implementation manner of the first aspect, each RMSI carries configuration information of the second random access resource, which is used for initiating random access by the terminal device.

In a possible implementation manner of the first aspect, the indication information is a system frame offset value X, where X is represented as configuration information of the first random access resource carried on an xth system frame from the current system frame, and the value of X is greater than or equal to 1.

In another possible implementation manner of the first aspect, the indication information is the number Y of RMSI periods, where Y represents configuration information of the first random access resource that exists on the y+1th RMSI after undergoing Y RMSI periods, and a value of Y is greater than or equal to 1.

In another possible implementation manner of the first aspect, the indication information is a period T and an offset value M of configuration information of the first random access resource.

In another possible implementation manner of the first aspect, the system frame number F where the first random access resource is located satisfies the following formula:

and taking the remainder of the period T, wherein the remainder is the offset value M.

In another possible implementation manner of the first aspect, the indication information is multiple N of RMSI periods, where N indicates that configuration information of the first random access resource exists on every N RMSIs, or that configuration information of the first random access resource exists on every N-1 RMSIs, and a value of N is greater than or equal to 1.

In another possible implementation manner of the first aspect, the configuration information of the random access resource includes one or more of the following information:

the method comprises the steps of configuring an index of a physical random access channel PRACH, a random access resource period scaling parameter, a random access resource frame offset, a random access resource time slot offset, message 1 frequency division, zero autocorrelation area configuration, maximum transmission times of a preamble sequence, window length of a random access request response, available preamble number, number of random access opportunities RO associated with one synchronous signal block, type of the associated synchronous signal block and subcarrier interval used for sending the message 1.

In a second aspect, a method for configuring information is provided, including: periodically receiving a plurality of pieces of Residual Minimum System Information (RMSI) sent by an upper node, wherein part of the RMSI carries configuration information of a first random access resource and is used for an IAB node to initiate random access, and at least part of the RMSI comprises indication information, wherein the indication information is used for indicating the time domain position of the configuration information of the first random access resource; determining the first random access resource based on the indication information; and initiating random access based on the random access resource.

In a possible implementation manner of the second aspect, each RMSI carries configuration information of a second random access resource, which is used for initiating random access by the terminal device.

In a possible implementation manner of the second aspect, the indication information is a system frame offset value X, where X is represented as configuration information of the first random access resource carried on an xth system frame from the current system frame, and the value of X is greater than or equal to 1.

In another possible implementation manner of the second aspect, the indication information is a RMSI period number Y, where Y represents configuration information of the first random access resource that exists on the y+1th RMSI after undergoing Y RMSI periods, and a value of Y is greater than or equal to 1.

In another possible implementation manner of the second aspect, the indication information is a period T and an offset value M of occurrence of configuration information of the first random access resource.

In another possible implementation manner of the second aspect, a system frame number F where the configuration information of the first random access resource is located satisfies the following formula: and taking the remainder of the period T, wherein the remainder is the offset value M.

In another possible implementation manner of the second aspect, the indication information is multiple N of RMSI periods, where N represents that configuration information of the first random access resource exists on every N RMSIs, or that configuration information of the first random access resource exists on every N-1 RMSIs, and a value of N is greater than or equal to 1.

In another possible implementation manner of the second aspect, the configuration information of the first random access resource includes one or more of the following information:

According to the technical scheme, the configuration information of the random access resources special for the IAB node is not required to be carried in each RMSI period, the configuration information of the random access resources special for the IAB node is only required to be carried in certain RMSIs, and then the random access resources are determined based on the configuration information to access the network. Compared with the technical scheme that each RMSI carries the configuration information of the random access resource special for the terminal equipment and the configuration information of the random access resource special for the IAB node, the signaling overhead can be saved.

In a third aspect, there is provided an apparatus comprising: a processing unit, configured to obtain a plurality of remaining minimum system information RMSI, where a portion of the RMSI carries configuration information of a first random access resource, and is used for an IAB node to initiate random access, and at least a portion of the RMSI includes indication information, where the indication information is used to indicate a time domain position of the configuration information of the first random access resource; and a generation unit which periodically transmits the plurality of RMSIs.

In a possible implementation manner of the third aspect, each RMSI carries configuration information of the second random access resource, which is used for the terminal device to initiate random access.

In one possible implementation manner of the third aspect, the indication information is a system frame offset value X, where X is represented as configuration information of the first random access resource carried on an xth system frame from the current system frame, and the value of X is greater than or equal to 1.

In another possible implementation manner of the third aspect, the indication information is the number Y of RMSI periods, where Y represents configuration information of the first random access resource that exists on the y+1th RMSI after undergoing Y RMSI periods, and a value of Y is greater than or equal to 1.

In another possible implementation manner of the third aspect, the indication information is a period T and an offset value M of configuration information of the first random access resource.

In another possible implementation manner of the third aspect, the system frame number F where the first random access resource is located satisfies the following formula:

In another possible implementation manner of the third aspect, the indication information is multiple N of RMSI periods, where N indicates that configuration information of the first random access resource exists on every N RMSIs, or that configuration information of the first random access resource exists on every N-1 RMSIs, and a value of N is greater than or equal to 1.

In another possible implementation manner of the third aspect, the configuration information of the first random access resource includes one or more of the following information:

In a fourth aspect, there is provided an apparatus comprising: a receiving unit, configured to periodically receive a plurality of remaining minimum system information RMSI sent by an upper node, where a part of the RMSI carries configuration information of a first random access resource, and is used for an IAB node to initiate random access, and at least a part of the RMSI includes indication information, where the indication information is used to indicate a time domain position of the configuration information of the first random access resource; a processing unit configured to determine the first random access resource based on the indication information; and initiating random access to the upper node based on the first random access resource.

In a possible implementation manner of the fourth aspect, the indication information is a system frame offset value X, where X is represented as configuration information of the first random access resource carried on an xth system frame from the current system frame, and the value of X is greater than or equal to 1.

In another possible implementation manner of the fourth aspect, the indication information is the number Y of RMSI periods, where Y represents configuration information of the first random access resource that exists on the y+1th RMSI after undergoing Y RMSI periods, and a value of Y is greater than or equal to 1.

In another possible implementation manner of the fourth aspect, the indication information is a period T and an offset value M of occurrence of the first random access resource.

In another possible implementation manner of the fourth aspect, a system frame number F where the configuration information of the first random access resource is located satisfies the following formula:

In another possible implementation manner of the fourth aspect, the indication information is multiple N of RMSI periods, where N indicates that configuration information of the first random access resource exists on every N RMSIs, or that configuration information of the first random access resource exists on every N-1 RMSIs, and the value of N is greater than or equal to 1.

In another possible implementation manner of the fourth aspect, the configuration information of the first random access resource includes one or more of the following information:

In a fifth aspect, a method of configuring information includes:

the method comprises the steps that a first node generates a plurality of pieces of Residual Minimum System Information (RMSI), wherein at least part of the RMSI carries scheduling information, the scheduling information is used for indicating the time-frequency position of configuration information of a first random access resource and is used for an IAB node to initiate random access;

periodically transmitting the plurality of RMSIs;

wherein the scheduling information includes one or more of the following information:

the method comprises the steps of a period of first random access resource configuration information, a frequency domain position of the first random access resource configuration information, a type of scheduling information and an update indication.

The technical scheme provided by the application is different from the first embodiment, the configuration information of the first random access resource in the embodiment can be borne on other system information OSI, the scheduling information is only carried on the RMSI, the time domain position of the configuration information of the random access resource special for the IAB node is indicated, and the cost can be saved.

In a possible implementation manner of the fifth aspect, a frequency domain position of the configuration information of the first random access resource is index information of a search space.

In another possible implementation manner of the fifth aspect, when the type of the scheduling information takes a first value, the scheduling information is represented as scheduling information of other system information OSI;

And when the type of the scheduling information takes a second value, representing that the scheduling information is the scheduling information of the configuration information of the first random access resource.

In another possible implementation manner of the fifth aspect, when the update indicates to take the first value, characterizing that the subordinate node does not need to update its random access resource; and when the update instruction takes a second value, characterizing that the subordinate node needs to update own random access resource.

In a sixth aspect, a method for configuring information is provided, including:

periodically receiving a plurality of pieces of Residual Minimum System Information (RMSI), wherein at least part of the RMSI carries scheduling information, the scheduling information is used for indicating the time-frequency position of configuration information of a first random access resource and is used for an IAB node to initiate random access; wherein the scheduling information includes one or more of the following information:

the method comprises the steps of a period of first random access resource configuration information, a frequency domain position of the first random access resource configuration information, a type of scheduling information and an update indication;

determining a random access resource based on configuration information of a first random access resource indicated by the scheduling information;

and accessing to a superior node based on the determined random access resource.

In a possible implementation manner of the sixth aspect, the frequency domain position of the first random access resource configuration information is index information of a search space.

In another possible implementation manner of the sixth aspect, when the type of the scheduling information takes a first value, the scheduling information is represented as scheduling information of other system information OSI;

and when the type of the scheduling information takes a second value, characterizing that the scheduling information is the scheduling information of the first random access resource configuration information.

In another possible implementation manner of the sixth aspect, when the update indication takes a first value, characterizing that no self-update of random access resources is required; and when the update instruction takes a second value, representing random access resources which need to be updated.

In a seventh aspect, there is provided an apparatus comprising:

a processing unit, configured to generate a plurality of remaining minimum system information RMSI, where at least part of the RMSI carries scheduling information, where the scheduling information is used to indicate a time-frequency location of configuration information of a first random access resource, and is used for a subordinate node to initiate random access;

a transmitting unit configured to periodically transmit the plurality of RMSIs to the subordinate node;

In an eighth aspect, there is provided an apparatus comprising:

a receiving unit, configured to periodically receive a plurality of remaining minimum system information RMSI, where at least part of the RMSI carries scheduling information, where the scheduling information is used to indicate a time-frequency location of configuration information of a first random access resource, and is used to initiate random access; wherein the scheduling information includes one or more of the following information:

a processing unit, configured to determine a random access resource based on configuration information of the random access resource indicated by the scheduling information; and accessing to a superior node based on the determined random access resource.

According to the technical scheme, each RMSI does not need to carry the configuration information of the random access resource special for the IAB node, and the configuration information of the random access resource special for the IAB node can not be carried on the RMSI and can be in other time domain positions, for example, OSI. Only the scheduling information of the random access resources special for the IAB node is needed to be carried in part or all of the RMSIs, and the scheduling information indicates the configuration information of the random access resources special for the IAB node, so that the resources can be saved.

A ninth aspect provides a communication device for performing the method provided in the first or second aspect. In particular, the communication device may comprise means for performing the method provided in the first or second aspect. Alternatively, the communication device is configured to perform the method provided in the fifth or sixth aspect. In particular, the communication device may comprise means for performing the method provided in the fifth or sixth aspect.

In a tenth aspect, there is provided a communication device comprising a memory for storing instructions and a processor for executing the instructions stored in the memory, and execution of the instructions stored in the memory causes the processor to perform the method provided in the first or second aspect; alternatively, the processor is caused to perform the method provided in the fifth or sixth aspect.

In an eleventh aspect, a chip is provided, the chip including a processing module and a communication interface, the processing module being configured to control the communication interface to communicate with the outside, the processing module being further configured to implement the method provided in the first aspect or the second aspect.

In a twelfth aspect, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a computer, causes the computer to implement the method of the first aspect or any of the possible implementations of the first aspect.

In a thirteenth aspect, there is provided a computer program product comprising instructions which when executed by a computer cause the computer to implement the method provided in the first or second aspect.

A fourteenth aspect provides a communication system comprising a first device and a second device, wherein the first device comprises an apparatus according to any one of the possible implementations of the third aspect or the third aspect, and the second device comprises an apparatus according to any one of the possible implementations of the fourth aspect or the fourth aspect.

Based on the above description, the scheme provided by the application reports the interference resource of the channel resource to the network device through the terminal device, so that the network device can accurately acquire the interference resource of the channel resource, and the network device can perform reasonable beam interference management conveniently, thereby avoiding multi-user transmission by adopting a plurality of beams with stronger mutual interference at the same time, and further improving the performance and efficiency of multi-user transmission.

Drawings

FIG. 1 is a schematic diagram of a communication system to which embodiments of the present application apply;

fig. 2 is a schematic structural diagram of a base station/relay device provided in the present application;

fig. 3 is a schematic structural diagram of a terminal device provided in the present application;

FIG. 4A is a schematic flow chart of a method of configuring information provided herein;

fig. 4B is a schematic diagram of indicating an IAB node-specific random access resource provided in the present application;

fig. 4C is a schematic diagram of another indication of an IAB node-specific random access resource provided herein;

fig. 4D is a schematic diagram of another indication of an IAB node-specific random access resource provided in the present application;

FIG. 5A is a schematic flow chart of a method for configuring information provided herein;

fig. 5B is a schematic diagram of indicating an IAB node-specific random access resource provided in the present application;

fig. 6 is a schematic diagram of resource allocation of an IAB node access backhaul link provided in the present application;

FIG. 7A is a schematic diagram of a method for configuring information provided in the present application;

fig. 7B is a schematic diagram of an IAB node random access resource allocation provided in the present application;

FIG. 8A is a schematic diagram of a method for configuring information provided in the present application;

fig. 8B is a schematic diagram of another random access resource allocation of an IAB node provided in the present application;

Fig. 9 is a schematic block diagram of a communication device provided by an embodiment of the present application;

fig. 10 is another schematic block diagram of a communication device provided by an embodiment of the present application.

Detailed Description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The embodiments of the present application may be applied to beam-based multicarrier communication systems, such as 5G systems or New Radio (NR) systems.

Fig. 1 is an IAB communication system provided in an embodiment of the present application.

It should be noted that, the communication system mentioned in the embodiments of the present application includes, but is not limited to: narrowBand internet of things (narrow band-Internet of Things, NB-IoT), global system for mobile communications (Global System for Mobile Communications, GSM), enhanced data rates for GSM evolution (Enhanced Data rate for GSM Evolution, EDGE), wideband code Division multiple access (Wideband Code Division Multiple Access, WCDMA), code Division multiple access 2000 (Code Division Multiple Access, CDMA 2000), time Division synchronous code Division multiple access (Time Division-Synchronization Code Division Multiple Access, TD-SCDMA), long term evolution (Long Term Evolution, LTE), and 5G mobile communication systems.

In the communication system shown in fig. 1, an integrated access backhaul, IAB, system is presented. An IAB system includes at least one host base station (douor gNB, dgNB), and one or more terminal devices (UE in fig. 1 as an example) 101, and one or more IAB nodes (TRP in fig. 1 as an example) rTRP 110 served by it. The rTRP 110 is connected to the hosting base station 100 through a wireless backhaul link 113, and one or more UEs 111 served by the rTRP 110. Host base stations include, but are not limited to: an evolved Node B (evolved Node Base, eNB), a Radio network controller (Radio Network Controller, RNC), a Node B (Node B, NB), a base station controller (Base Station Controller, BSC), a base transceiver station (Base Transceiver Station, BTS), a Home base station (e.g., home evo lved NodeB, or Home Node B, HNB), a BaseBand Unit (BBU), or a next generation New Radio (NR, new Radio) base station (e.g., gNB), etc. The IAB nodes include, but are not limited to: an evolved Node B (evolved Node Base, eNB), a Radio network controller (Radio Network Controller, RNC), a Node B (Node B, NB), a base station controller (Base Station Controller, BSC), a base transceiver station (Base Transceiver Station, BTS), a Home base station (e.g., home evolved NodeB, or Home Node B, HNB), a BaseBand Unit (BBU), or a next generation New Radio (NR, new Radio) base station (e.g., gNB), a transmission reception point (Transmission Reception Point, TRP), etc

The IAB system may also include another one or more IAB node rTRP 120, which one or more IAB node rTRP 120 is connected to the IAB node rTRP 110 through a wireless backhaul link 123 to access the system, and one or more UEs 121 served thereby. In fig. 1, both the IAB nodes rTRP 110 and rTRP 120 are connected to the network through wireless backhaul links. In this application, the wireless backhaul links are all from the perspective of the IAB node, for example, the wireless backhaul link 113 is a backhaul link of the IAB node rTRP 110, and the wireless backhaul link 123 is a backhaul link of the IAB node rTRP 120. As shown in fig. 1, one IAB node, e.g., 120, may be connected to the network by connecting to another IAB node, e.g., 110, via a wireless backhaul link, e.g., 123, and the IAB system may be connected to the network via multiple levels of wireless relay. Generally, a node providing wireless backhaul link resources, such as 110, is referred to as an upstream node or an upstream node, and an IAB node accessed to the network through the wireless backhaul link, such as 120, is referred to as a downstream node or a downstream node. In general, a downstream node may be considered a terminal of an upstream node. It should be appreciated that in the IAB system shown in fig. 1, one IAB node is connected to one upstream node, but in future IAB systems, in order to improve the reliability of the wireless backhaul link, one IAB node, e.g. 120, may have multiple upstream nodes to serve one IAB node at the same time. In this application, the terminal device UE102,112,122 may be a stationary or mobile device. For example, the mobile device may be a mobile phone, a smart terminal, a tablet, a notebook (laptop), a video game console, a multimedia player, even a mobile or stationary IAB node, etc. Stationary devices are typically located in fixed locations, such as computers, access points (connected to a network, such as an IAB node, via a wireless link), and the like. The name of the IAB node rTRP 110,120 is not limited to the scenario or network in which it is deployed, but may be any other name such as relay, RN, etc. The use of rTRP in this application is only a need for ease of description.

In fig. 1, all wireless links 102,112,122,113,123 are bi-directional links, including uplink and downlink transmission links, and in particular, wireless backhaul links 113,123 may be used for upstream nodes to provide downstream node services, such as upstream node 100 to provide wireless backhaul services to downstream node 110. The downstream transmission refers to the transmission by an upstream node, such as node 100, for a downstream node, such as node 110, and the upstream transmission refers to the transmission by a downstream node, such as node 110, for data to an upstream node, such as node 100. The node is not limited to being a network node or a UE, e.g., in a D2D (Device to Device) scenario, the UE may serve other UEs as a relay node. The wireless backhaul link may in turn be an access link in some scenarios, such as backhaul link 123 may also be considered an access link for node 110, and backhaul link 113 is also an access link for node 100.

As shown in fig. 2, a schematic structural diagram of a host base station provided in this embodiment of the present application may include a baseband processing unit (Building Baseband Unit, BBU) 201 and a Remote Radio Unit (RRU) 202, where the RRU 202 is connected to an antenna feeder system 203, and the BBU 201 and the RRU 202 may be detached for use as required. For example, the RRU may be remote and located in a cloud platform. The BBU 201 is configured to implement operation maintenance of the entire node, implement signaling processing, radio resource management, and a transmission interface to a packet core network, and implement a physical layer, a medium access control layer, L3 signaling, and an operation maintenance master control function. The RRU 202 is configured to implement conversion between a baseband signal and a radio frequency signal, demodulation of a wireless reception signal, modulation of a transmission signal, power amplification, and the like. The antenna feed system 203 may include a plurality of antennas for enabling the reception and transmission of wireless air interface signals. Those skilled in the art will appreciate that in the specific implementation, the host base station may also adopt other general hardware structures, and is not limited to the hardware structure shown in fig. 2.

As shown in fig. 3, for a schematic structural diagram of a terminal device provided in the embodiment of the present application, taking a mobile phone as an example, the mobile phone may include: RF (radio frequency) circuitry 310, memory 320, other input devices 330, a display screen 340, sensors 350, audio circuitry 360, I/O subsystem 370, processor 380, and power supply 390. The following describes the components of the mobile phone in detail with reference to fig. 3:

processor 380 is coupled to RF circuitry 310, memory 320, audio circuitry 360, and power supply 390, respectively. The I/O subsystem 370 is connected with the other input devices 330, the display 340, and the sensors 350, respectively. The RF circuit 310 may be used for receiving and transmitting signals during a message or a call, and particularly, after receiving downlink information of a base station, the downlink information is processed by the processor 380. Memory 320 may be used to store software programs and modules. The processor 380 performs various functional applications and data processing of the handset by running software programs and modules stored in the memory 320. Other input devices 330 may be used to receive entered numeric or character information and to generate key signal inputs related to user settings and function control of the handset. The display screen 340 may be used to display information input by a user or information provided to the user and various menus of the mobile phone, and may also accept user input, and the display screen 340 may include a display panel 341 and a touch panel 342. The sensor 350 may be a light sensor, a motion sensor, or other sensor. Audio circuitry 360 may provide an audio interface between the user and the handset. The I/O subsystem 370 is used to control input and output external devices, which may include other device input controllers, sensor controllers, display controllers. The processor 380 is a control center of the mobile phone, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions and processes data of the mobile phone by running or executing software programs and/or modules stored in the memory 320 and calling data stored in the memory 320, thereby performing overall monitoring of the mobile phone. A power supply 390, such as a battery, is used to power the various components described above, and preferably is logically connected to the processor 380 via a power management system to manage charging, discharging, and power consumption.

Although not shown, the mobile phone may further include a functional module or a device such as a camera, a bluetooth module, etc., which will not be described herein. Those skilled in the art will appreciate that the handset configuration shown in fig. 3 is not limiting of the handset and may include more or fewer components than shown, or may combine certain components, or may be arranged in a different arrangement of components.

To facilitate an understanding of embodiments of the present application, some terms related to embodiments of the present application are first described below.

1. Integrated access backhaul

For an IAB network, where the sum of the available resources is fixed for the access and backhaul links, the resource partitioning between the access and backhaul links can be dynamically changed and the instant demands of the terminal devices across the network are met. The access link refers to a link where network devices (e.g., IAB node, donor, base station, TRP, etc.) provide access services for general terminal devices. The backhaul link refers to a link between network devices that transmits information and data, where the information and data include signaling and data that are sent from a core network or a node of a higher-level network device and are necessary for the network device to operate, and also include data and signaling of a terminal device.

2. Mobile terminal/distribution unit: (Mobile-Termination/Distributed Unit, MT/DU)

An MT module (also referred to as MT function) is defined as a component of a similar terminal device. In an IAB network, an MT is referred to as a function residing on an IAB node. Since the MT functions like a common terminal device, it can be understood that the IAB node is accessed to an upper node or a home base station through the MT module, and the IAB node provides an access service for the terminal device or a next-level IAB node through the DU module (may also be referred to as a DU function).

MT modules and DU modules are logically functional partitions, not actual physical partitions. The MT module may be implemented in software, or in hardware, or in both. Likewise, the DU module may be executed by software, may be executed by hardware, or may be executed by both software and hardware.

3. Time division multiplexing (time division multiplexing, TDM):

the radio resources are divided in a time scale, and all resources (including frequency domain resources and hardware resources) of the system can be used by a plurality of modules on the allocated time resources. In an IAB network, TDM refers to the transmission of MT modules and DU modules of an IAB in a time-division manner, with either only the MT modules or only the DU modules operating within a particular time unit.

4. Half duplex restraint (half duplex constraint)

In an IAB network, a half duplex constraint means that the MT module of one IAB node cannot receive while transmitting. Accordingly, the MT module cannot receive while the DU module is transmitting. I.e. for an IAB node without full duplex capability, the MT/DU modules cannot transmit and receive simultaneously.

5. Random access resource for backhaul link

For a certain IAB node, the random access resource used by the IAB node to access its upper node may be referred to as a random access resource of the backhaul link. Taking fig. 1 as an example, the upstream node 100 provides a wireless backhaul service for the downstream node 110, and for the downstream node 110, the random access resource used for accessing the upstream node 100 is the random access resource of the backhaul link.

6. Random access resource for access link

For a certain IAB node, the IAB node accesses the configured random access resource for its subordinate node, and for that IAB node may be referred to as a random access resource of an access link. Taking fig. 1 as an example, the upstream node 100 provides a wireless backhaul service for the downstream node 110, and for the upstream node 100, the random access resource configured by the downstream node 100 is a random access resource of an access link.

When the terminal equipment accesses the network equipment, random access needs to be initiated to the network equipment. Before this, the terminal device acquires PRACH configuration information by reading the remaining minimum system message RMSI broadcasted by the network device (PRACH configurationinfo). The PRACH configuration information indicates time domain and frequency domain resources which can be used by the terminal equipment, and the PRACH configuration information indicates preamble information, retransmission times, transmission power and the like, and is used for the terminal equipment to initiate a random access process.

In the current standard discussion of 5G, the integrated access backhaul (Integrated Access and Backhaul, IAB) node (not excluding other types of devices in the future) also determines configuration information of the random access resources according to a procedure similar to the terminal device, further determines the random access resources based on the configuration information, and initiates random access on the determined random access resources. The random access resource may be one or more random access channel opportunities (ROs).

In an IAB system, an IAB node has more receiving antennas than a general terminal device, and a higher deployment position, and the antenna receiving gain of the IAB node may be higher than that of the terminal device, so that the IAB node may still access a cell after exceeding the coverage area related to a normal cell. The IAB node may initiate random access using the same random access resources as the terminal device at a further location, such that a super cell coverage access occurs. The result is an access failure and interference to other terminal devices within the base station. The configuration of random access is related to the cell coverage orientation of the network planning design, since different random access preamble formats support different maximum access distances.

If the preamble format of a longer Cyclic Prefix (CP) is used by the terminal equipment designed for such an IAB node with very few random access initiation, it is also unnecessary. On the one hand, the preamble format of the long CP occupies more OFDM symbols, increases the time length of each random access channel (RACH occision, RO), occupies more time resources, and reduces the system spectrum efficiency. On the other hand, network planning deployment is not facilitated. For example, a cell covering only 5km is originally planned, and in order to enable the IAB node access network to expand the cell to cover 10km, the terminal device may cause interference to the neighboring cell when initiating random access.

In order to solve the above problem, in the 3GPP standard discussion and formulation, each company suggests to configure random access resources of a backhaul link (i.e., random access resources adopted by an IAB node to access an upper node) for an IAB node, where the random access resources of the backhaul link are different from time domain and frequency domain positions of the random access resources adopted by a terminal device to access the IAB node, and other parameters may also be different. For example, the random access resource of the backhaul link may use a different preamble format than the terminal device to support more distant access. In addition, the random access resource of the backhaul link can use a relatively long period, a sparse density and reduced overhead.

The PRACH configuration information used by the terminal device is already described in 3GPP standard Release 15. The PRACH configuration information employed by the terminal device for the current serving cell is indicated, for example, by configuring a random access index (the value of the first column in the table below). The terminal equipment can obtain PRACH configuration information in a table look-up mode. Wherein the table is defined in standard Release15, there are currently 256 values, one given as an example below:

TABLE 1

For example, taking table 1 as an example, the terminal device uses a random access resource configuration with PRACH configuration index of 0, which indicates that the random access preamble format sent by the terminal device is A1, the frame numbers of the random access resource are system frames 1,17,39, and 49 … … (the period and offset of the random access resource can be calculated through x and y in the table, specifically, the position is determined by dividing the system frame number by x and the corresponding remainder, taking x=16 and y=1 in table 1 as an example, the terminal device can calculate that the random access resource of the current serving cell appears on the 1,17,39,49 th and … th system frames), and the random access resource appears on the symbol on 4,9,14,19,24,29,34,39 th time slot of the corresponding system frame. The random access resource starts with symbol 0. There are 6 ROs in each slot, each RO being 2 symbols in length.

However, if two sets of PRACH configurations are carried on each RMSI, the overhead is large. Therefore, the first embodiment of the application provides a method for reducing the configuration information of the overhead.

Embodiment one:

fig. 4A is a schematic flow chart of a method 400 for configuring information provided in an embodiment of the present application. The method 400 includes the steps of:

410, the first node obtains a plurality of RMSIs, wherein part of the RMSIs carries first random access resource configuration information (may also be referred to as PRACH configuration), the first random access resource configuration information is used for the second node to initiate random access to the first node, and at least part of the RMSIs includes indication information, where the indication information is used for indicating a time domain position of the first random access resource configuration information;

420, periodically transmitting the plurality of RMSIs.

430, the second node periodically receives the plurality of RMSIs and reads the indication information; and acquiring configuration information of the first random access resource based on the indication information.

And 440, accessing the first node by the second node based on the first random access resource indicated by the configuration information.

Optionally, each RMSI further carries second random access resource configuration information, where the second random access resource is a random access resource adopted by the terminal device to access the first node. The first random access resource and the second random access resource may have different configurations in the time domain and the frequency domain.

Specifically, in step 410, the first node obtains a plurality of RMSIs, which may be understood as that the first node generates a plurality of RMSIs, and a part of RMSIs carries first random access resource configuration information; it may also be understood that the first node receives a plurality of RMSIs from its upper node, where at least part of the RMSIs carries configuration information of the first random access resource.

Specifically, in step 410, RMSI may also be referred to as system information block1 (system information block, SIB 1), which carries the PRACH configuration. The RMSI is periodically transmitted during a scheduling period, for example, the period of the RMSI may be 20ms, or the period of the RMSI is the same as the period of the synchronization signal/physical broadcast channel block SS/PBCH block. And each RMSI carries PRACH configuration for terminal equipment access, only part of the RMSIs carry PRACH configuration for IAB node access, and the PRACH configuration of the IAB nodes are carried on which RMSIs and need to be determined according to further indication information. These indications are also carried on at least part of the RMSI (either part of the RMSI or the whole RMSI), and there may be various implementations of the indications.

For example, one possible implementation is: the indication information is a system frame offset value, and is represented by X, where X represents that RMSI on an xth system frame from a current system frame carries PRACH configuration information (i.e., first random access resource configuration information in method 400) of an IAB node, and the value of X is greater than 1.

As shown in fig. 4B, for example, X takes a value of 4, and each system frame is 10ms long, and when the IAB node is time-synchronized with the upper node, the frame number of the current system frame can be obtained. The configuration information of the random access resource of the IAB node is carried in RMSI at 40ms after the current system frame (i.e., the third system frame in fig. 4A).

The IAB node detects the PBCH and determines the time-frequency position of the RMSI on the system frame. For example, the time domain position and frequency domain position of RMSI in the system frame may be indicated by a system information block SIB message in the physical broadcast channel PBCH. For example, the configuration of CORESET#0 and Search space#0 is again included in the parameters PDCCH-ConfigSIB1"," PDCCH-ConfigSIB1 ". The search space includes time domain information for detecting RMSI. The IAB node obtains the time-frequency position of the RMSI on the system frame by reading the MIB message of the PBCH, and further obtains PRACH configuration information.

As another example, another possible implementation is: the indication information is the number of RMSI periods. For example, the indication information takes a value of Y, where Y represents that after Y RMSI periods have elapsed, there is a random access resource of the IAB node on the y+1st RMSI, and the value of Y is greater than 1.

As shown in fig. 4C, first, the IAB node determines the RMSI period, and obtains configuration information of random access resources of the IAB node carried on the RMSI by taking the value of Y carried in the RMSI.

The IAB node determines the RMSI period in several ways: blind detection, determining the period of an SS/PBCH block, determining the period of an RMSI according to the period of the SS/PBCH block, determining the period of a PBCH, and determining the period of the RMSI according to the period of the PBCH. For example, if the period of RMSI is 20ms and the value of y is 2, the configuration information of the random access resource of the IAB node exists every 40ms, i.e., the configuration information of the random access resource of the IAB node exists on one RMSI every two RMSIs.

As another example, another possible implementation is: the indication information is a period T and an offset value M of random access resource configuration information of the IAB node. And determining a system frame number F carrying the random access resource configuration information of the IAB node according to the indication information, and further acquiring the configuration information of the random access resource from the system frame.

Wherein, the system frame number F of the random access resource of the IAB node meets the following formula:

and taking the remainder of the period T, wherein the remainder is an offset value M.

For example, as shown in fig. 4C, the period T is 8, that is, there is only one RMSI carrying the random access resource of the IAB node in each 8 RMSIs. The offset value M takes a value of 5, that is, the frame numbers are 5, 13, 21, and 29 …, and the configuration information of the random access resource of the IAB node exists.

Furthermore, the IAB node obtains the configuration information of the random access resource from the specific time-frequency position on the system frame. The specific time-frequency location, i.e. the time-frequency location of RMSI on the system frame, may be obtained according to the SIB indication in the PDCCH. For example, the configuration of CORESET#0 and Search space#0 is again included in the parameters PDCCH-ConfigSIB1"," PDCCH-ConfigSIB1 ". The search space includes time domain information for detecting RMSI. The IAB node obtains the time-frequency position of the RMSI on the system frame by reading the MIB message of the PBCH, and further obtains PRACH configuration information

As another example, another possible implementation is: the indication information is a multiple X of the RMSI period and an offset value M.

For example, as shown in fig. 4D, the IAB node determines that the RMSI period is 20ms by blind detection, the value of x is 4, that is, there is configuration information of random access resources carrying the IAB node in one RMSI in every four RMSIs, and the value of offset M is 2, that is, the configuration information of random access resources carrying the IAB node in the 2 nd, 6 th, 10 th and 14 th … th RMSIs.

The configuration information of the random access resource of the IAB node mentioned in the application includes one or more of the following information:

1. the physical random access channel configuration index is indicated, for example, by the parameter prach-configuration index. A preamble format for determining random access, resource time domain information (e.g., time slot in which random access resource is located, symbol in which random access resource is located). This parameter may be stored in a table similar to table 1, with the time domain location and frequency domain location of the PRACH configuration determined by the PRACH configuration index broadcast by the upper node.

2. Message 1 frequency division is indicated, for example, by the parameter msg 1-FDM. The random access opportunity (RO) for indicating whether there are a plurality of frequency divisions in one time domain may be 1,2,4,8.

3. The zero auto-correlation region configuration is, for example, represented by the parameter zerocorerelation zoneconfig, for determining the preamble sequence.

4. The maximum number of transmissions of the preamble sequence is indicated, for example, by the parameter preableTransMax.

5. The window length of the random access request response is indicated, for example, by ra-ResponseWindow.

6. The number of available Preambles, for example, is represented by TotalNumberOfRA-preamples, ranging from 1 to 63.

7. The number of ROs associated with one SSB is represented, for example, by the parameter SSB-perRACH-occidionandbb-preambiserperssb, e.g., 1,2,4,8.

8. The associated SSB type is represented, for example, by a parameter Association-SSB-type. In an IAB network, in addition to conventional SSBs, some SSBs are dedicated to inter-IAB node-to-node measurement discovery, and these SSBs are not visible to the initially accessed terminal device. For example, when the parameter takes a value of 1, the associated SSB type is characterized as an SSB dedicated to the IAB node, i.e. invisible to the terminal device; when the parameter takes a value of 0, the associated SSB type is characterized as conventional SSB, i.e. visible to all terminal devices.

9. The subcarrier spacing used for transmitting message 1 is represented, for example, by msg 1-subsearriersspacing.

10. The PRACH resource frame offset configuration is represented, for example, by y_offset. When the IAB node determines the time domain location of the random access resource, the physical random access channel configuration index determines the value of y (y in table 2) and then applies the y_offset value, e.g. adds to the value of y after the offset. The value range of y_offset may be 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15. It should be appreciated that the existence of the frame offset y_offset is used to implement time division multiplexing between the random access resources of the IAB node and the upper node backhaul link and the IAB node and the child node random access resources. Considering that the number of nodes is not too large in a typical IAB deployment scenario, the maximum value of 15 may meet deployment needs. And a larger value requires more bits to be used, resulting in additional overhead.

11. Random access resource period scaling parameters

12. Random access resource frame offset

It should be appreciated that the first of the 12 items of information described above may be stored in the IAB node in tabular form, similar to the form of table 1. For example, as shown in table 2 below:

TABLE 2

Other parameters may be configured to the lower node via a broadcast signal.

Illustratively, as shown in table 2, specific time-domain and frequency-domain configuration information is obtained according to a configuration index of 1. And determining random access resources according to other parameters in the broadcast signals, and accessing to the upper node.

According to the technical scheme provided by the embodiment of the application, the random access resource configuration information of the second node is not required to be carried in each RMSI period, only the configuration information of the random access resource of the second node and the indication information of the configuration information are required to be carried in part of the RMSIs, and the signaling overhead can be greatly saved.

The second embodiment also solves the technical problem that two sets of PRACH configuration information are carried in each RMSI to cause high overhead, and the PRACH configuration information special for the IAB node is carried in other broadcast signals, for example, OSI. The scheduling information of the PRACH configuration information of the IAB node is only carried in part or all of the RMSIs, so that the cost is reduced.

Embodiment two:

fig. 5A is a schematic flow chart of a method 500 for configuring information provided in an embodiment of the present application. The method 500 includes the steps of:

510. the method comprises the steps that a first node obtains a plurality of RMSIs, at least part of the RMSIs carry scheduling information, the scheduling information is used for indicating the time domain position of configuration information of a first random access resource, and the configuration information of the first random access resource is used for random access of a backhaul link of a second node;

the method comprises the steps of time domain position of first random access resource configuration information, frequency domain position of the first random access resource configuration information, type of scheduling information and updating indication.

520. The plurality of RMSIs are periodically transmitted to the second node.

530. The second node periodically receives the plurality of RMSIs, and obtains configuration information of a first random access resource based on the scheduling information;

540. the second node accesses the first node based on the first random access resource indicated by the configuration information.

Specifically, the second node determines a time domain position of PRACH configuration based on the time domain position and the frequency domain position of the first random access resource configuration information included in the scheduling information, and further obtains a random access resource at the corresponding time domain position. The parameters included in the first PRACH configuration may be described in the first embodiment, which is not described herein.

As shown in fig. 5B, in the second embodiment of the present application, the first PRACH configuration may carry other broadcast signals, such as other system information (other system information, OSI), or other SIBs.

Optionally, since the RMSI may carry scheduling information of other system information (other system information, OSI), to represent distinction, when the type of the scheduling information is a first value, the scheduling information is characterized as OSI scheduling information; and when the type of the scheduling information is a second value, the scheduling information is characterized as the scheduling information of the first random access resource configuration information.

And the resource update indication is used for identifying whether the IAB node needs to update own random access resource. For example, in some special scenarios, such as a link failure recovery scenario, a handover scenario, and a cell reselection scenario, when the IAB node initiates random access, configuration information of a first random access resource of a target cell to be accessed is already acquired. At this time, the IAB node determines whether the configuration information of the random access resource itself needs to be updated according to the resource update instruction.

The resource update indication may be understood as a "version number" of the first random access resource configuration information, and when the IAB node obtains the random access resource configuration information, the IAB node may simultaneously obtain a "version number" of the resource configuration, for example, "2". When the IAB node needs to send random access, determining whether the currently stored configuration is out of date according to the resource update indication in the scheduling information in the RMSI. If the locally saved version number of the resource configuration is inconsistent with the version number obtained by the current reading system information, for example, 1, the IAB node needs to update its random access resource configuration information.

According to the technical scheme provided by the second embodiment of the application, the PRACH configuration for the IAB node backhaul link is carried in other broadcast signals, and the scheduling information of the PRACH configuration is carried only in the RMSI, so that the cost is reduced and the resources are saved compared with the case of directly carrying the PRACH configuration.

The embodiment of the invention also provides a third embodiment which solves different technical problems compared with the first and second embodiments. The specific description is as follows:

because the IAB node is introduced in the network architecture, two sets of random access resources need to be broadcasted, one set is used for random access of the terminal equipment, and the other set is used for random access of a backhaul link of the IAB node. The IAB node serves as a relay node, and needs to be connected to other IAB nodes (from the topology, the connected node is called an upper node, the connected node is called a lower node, and as shown in fig. 1, rTRP1 is an upper node of rTRP 2). After the IAB node accesses the network, a backhaul link handover may occur (for example, an upper node where rTRP1 is rTRP2, where rTRP2 needs to be handed over to rTRP3, so that rTRP3 is an upper node of rTRP 2), a backhaul link failure (link failure), and so on, where communication of the backhaul link needs to be recovered by sending a random access request to a neighboring node or an upper node.

For an IAB node, there is a need for a time domain resource for random access, and there are two other time domain resources, one for receiving random access of a terminal device and the other for receiving random access of a subordinate IAB node.

The IAB node is accessed to the upper node through the MT module, and the DU module of the IAB node needs to receive the random access request sent by the terminal equipment and the random access request sent by the lower IAB node on two time domain resources. In order to satisfy the half duplex constraint (i.e., the IAB node cannot perform the transmitting and receiving actions simultaneously), the DU module of the IAB is on the time domain resource (access link) that receives the random access request, and the MT module of the IAB is unable to initiate random access to the upper node (backhaul link).

For example, as shown in fig. 6, the three random access resources involved by the IAB node should be staggered in time.

When the IAB node switches the backhaul link, the time domain resource of the random access resource sent by the MT module changes, which may cause the time domain position of the DU module receiving the lower node or the terminal device to change, thereby causing the lower node and the lower link of the node to be affected, which may require the Donor base station to reconfigure the random access resource of a plurality of nodes, and the cost is high.

The present application provides the following third embodiment, which can reduce overhead without need of reallocating random access resources of multiple nodes.

As shown in fig. 7A, a method 700 for configuring information is provided in a third embodiment of the present application, including:

710. the host base station sends PRACH configuration information to all subordinate nodes (also called child nodes) on one link through first signaling, wherein the PRACH configuration information at least indicates two random access resources (also called random access opportunities), the two random access resources are not completely overlapped (may be partially overlapped or not overlapped at all) at least in a time domain, and the DU modules of the at least two first random access configurations are used for the subordinate nodes to receive random access requests of the subordinate IAB nodes.

Wherein the PRACH configuration information may be transmitted through a broadcast signal, such as a physical broadcast channel PBCH.

Alternatively, the PRACH configuration information may be located in RMSI, or OSI, or other time domain location on the PBCH. The various indication manners described in the first embodiment may be used to indicate which RMSI (or OSI) or system frames the PRACH configuration is carried in, which is not described herein.

Illustratively, as shown in fig. 7B, the Donor base station is an upper node of IAB1, IAB1 is an upper node of IAB2, and IAB2 is an upper node of IAB3. The Donor base stations, IAB1, IAB2, IAB3 belong to nodes on one link. The Donor base station broadcasts PRACH configurations to all subordinate nodes, including IAB1-IAB3. All subordinate nodes (including IAB1-IAB 3) receive a broadcast signal of the Donor base station, which includes at least two sets of PRACH configurations that partially overlap or do not overlap at all in the time domain, as indicated by the grey shading on fig. 7B. The two sets of PRACH configurations are PRACH configurations (i.e., resources for receiving a lower node random access request message) available to the DU module of each IAB node. For example, in fig. 7B, PRACH configurations available to the DU module of IAB1 are located in system frames 2 and 3, and system frames 6 and 7. PRACH configurations available to the DU module of IAB2 are located in system frames 2 and 3, and system frames 6 and 7; the PRACH configurations available to the DU module of IAB3 are located in system frames 2 and 3, and system frames 6 and 7.

720. The host base station sends a second random access configuration to the child node of the first level (i.e., IAB1 in fig. 7B) through a broadcast signal, and the MT module of the child node of the first level is used for the second random access configuration to access the host base station.

Illustratively, as shown in fig. 7B, the Donor base station broadcasts a PRACH configuration for the MT module of IAB1 to access the Donor base station, whose time domain locations are system frame 2 and system frame 6.

And the MT module of the node IAB1 acquires PRACH configuration information from the system frame 2 and the system frame 6, and then accesses the Donor base station based on the random access resource indicated by the PRACH configuration information.

730. The DU module of a first level child node (e.g., IAB1 node) determines a PRACH configuration that is available for access by a second level child node (e.g., IAB2 node), wherein the PRACH configuration for the second level child node does not overlap, or partially does not overlap, in time domain, with the PRACH configuration employed by the MT module of the first level child node.

740. And the DU module of the first-stage child node transmits the configuration for random access of the MT module of the second-stage child node to the second-stage child node through a broadcast signal.

750. And the MT module of the first level child node initiates a random access request to the Donor base station through a second random access configuration.

760. The MT module of the second level child node accesses the first level child node through the random access configuration in step 740.

Illustratively, as shown in fig. 7B, the MT module of IAB1 uses system frame 2 and system frame 6 to access the Donor base station, and the DU module of IAB1 cannot use system frame 2 and system frame 6 due to half duplex constraints. The DU module of IAB1 determines that the PRACH resources currently available are system frame 3 and system frame 7. Thus, the DU module of IAB1 broadcasts the system frame 3 and the system frame 7 as PRACH configurations to the subordinate node IAB2.

Accordingly, the MT module of node IAB2 accesses the upper node IAB1 using system frame 3 and system frame 7. Due to half duplex constraints, the DU module of node IAB2 cannot broadcast to the subordinate node IAB3 as PRACH configuration using system frame 3 and system frame 7. Therefore, the DU module of node IAB2 broadcasts PRACH configurations carried by system frame 2 and system frame 6 to the subordinate node IAB3.

Accordingly, the MT module of node IAB3 accesses the upper node IAB2 using PRACH configurations on system frame 2 and system frame 6. The DU module of IAB3 may broadcast system frame 3 and system frame 7 for a subordinate IAB node (not shown in the figure) that may access IAB3.

It should be noted that the sequence of the steps in the third embodiment of the present application may be adjusted, for example, the sequence of the replacing step 750 and the step 760 is changed.

The first signaling may be F1-AP (F1 application protocol) signaling.

The parameters included in the first random access configuration may be some or all of the parameters included in the random access configuration mentioned in the first embodiment, and will not be described in detail.

The parameters included in the second random access configuration may be some or all of the parameters included in the random access configuration mentioned in the first embodiment, and will not be described in detail.

By the method for configuring information provided by the embodiment, even if the IAB node performs backhaul link switching (including recovering to other neighboring nodes), the IAB MT module needs to change the random access resource position according to the new upper node, and the host base station is not required to reconfigure the node, the child node of the node and the node on the next whole link, so that signaling cost is greatly reduced.

The embodiment of the invention also provides a fourth embodiment, which has the same technical problems as the third embodiment and different technical means. The method comprises the following steps:

example IV

As shown in fig. 8A, an embodiment of the present application provides a method 800 for configuring information, including:

810. the host base station sends PRACH configuration information to all subordinate nodes (which may also be referred to as child nodes, e.g., IAB1-IAB3 in fig. 8B) on one link through a first signaling, where the PRACH configuration information is carried in a part of RMSI, and at least part of RMSI carries a system frame where the PRACH configuration information is located or first indication information of the RMSI where the PRACH configuration information is located.

Various implementations of the indication manner of the PRACH configuration may be referred to in the description of the first embodiment, and will not be repeated here.

The first signaling may be F1-AP signaling.

The PRACH configuration is transmitted over a broadcast channel PBCH.

820. The host base station sends second indication information to the first level child node, wherein the second indication information is used for indicating the time domain position of the available random access resource configuration information or indicating the time domain position of the silenced random access resource configuration information.

Optionally, the second indication information is a period and an offset value of available random access resource configuration information or configuration information of a muted random access resource.

Optionally, the second indication information is available random access resource configuration information or a frame number of a system frame where the silenced random access resource configuration information is located.

The second indication information may be sent by means of explicit signaling, or may be sent separately or together with the random access resource. The indication information may also be broadcast via a system message. For example, the indication may be via SS/PBCH blocks.

For example, when the second indication information is broadcast through system information, the indication may be made with 1 bit. For example, when the bit is 0, it indicates that the random access resource on the even numbered system frame is an available resource (or when the bit is 0, it indicates that the random access resource on the even numbered system frame is a muted resource); when the bit is 1, it indicates that the random access resource on the system frame with the odd frame number is an available resource (or when the bit is 1, it indicates that the random access resource on the system frame with the odd frame number is a muted resource); and vice versa.

For example, the upper node is a Donor base station, the lower node is nodes IAB1-IAB3, where node IAB1 is an upper node of node IAB2, and node IAB2 is an upper node of node IAB 3. The time domain resources of the random access resources configured for the nodes IABA1-IAB3 by the Donor base station are the same. For example, all random access resources are on system frame 1,7,13,19 ….

830. Based on the second indication information, the MT module of the first level child node determines available random access resources. For example, the MT module of the first level child node initiates a random access request based on the random access resource configuration information that is not silenced.

840, the MT module of the first level child node accesses the Donor base station based on the random access resource determined in step 830.

850. The DU module of the first level child node determines an available random access resource configuration, wherein the available random access resource configuration is a resource except for a resource used by the MT module in the PRACH resource configured by the Donor.

860. And the DU module of the first-stage child node transmits the available random access resource configuration to the second-stage child node.

870. The MT module of the second level child node accesses the first level child node in the random access resource configuration described in step 850; and determining the random access resource configuration available to the self DU module, wherein the random access resource configuration available to the second-level child node DU module is the resource except the resource used by the second-level child node MT module in the PRACH resource configured by the donor.

For example, as shown in FIG. 8B, each box represents a system frame, labeled system frame 1-system frame 8, respectively. Donor is an upper node of IAB1, IAB1 is an upper node of IAB2, and IAB2 is an upper node of IAB 3. In step 810, the upper node (e.g., donor in fig. 8B) transmits a random access configuration and indication information indicating that the period of the random access resource is 4 and the offset value is 2 to the lower node (e.g., node IAB1 in fig. 8B). That is, the system frame 2 and the system frame 6 carry random access configurations, which can be used for the node IAB1 to access the donor.

Because of the half duplex constraint of the node IAB1, it cannot perform both transmission and reception in the same time domain, that is, the MT module of the node IAB1 in fig. 8B transmits a random access request (may be marked as a BackHaul access, BH access) on the system frame 2, and then the DU module of the IAB1 cannot receive the random access request transmitted by the MT module of the lower node IAB2 on the system frame 2, where the DU module of the IAB1 may silence (muting) the random access resource of the system frame 2, and further receive the random access request transmitted by the MT module of the lower node IAB2 in the next cycle (system frame 6).

Since the DU module of IAB1 receives the random access request of the MT module of IAB2 on system frame 6, the MT module of IAB1 cannot send a BH access request on system frame 6, and the MT module of IAB1 needs to silence the random access resource of system frame 6.

Similarly, the MT module of IAB2 may obtain that it needs to silence the random access resource of system frame 2, and the DU module of IAB2 needs to silence the random access resource of system frame 6.

The MT module of IAB3 needs to silence the random access resources of system frame 6 and the DU module of IAB3 needs to silence the random access resources of system frame 2.

The technical scheme provided by the embodiment of the invention can greatly reduce the signaling overhead by providing a set of shared random access configuration without sending additional random access configuration. In addition, under the scene of link back transmission, the IAB DU can quickly determine the time domain position of the random access request of the self-receiving child node without the need of donor to reconfigure random access resources.

The various embodiments described herein may be separate solutions or may be combined according to inherent logic, which fall within the scope of the present application.

It should be understood that, in the foregoing embodiments of the methods and operations implemented by the terminal device, the methods and operations implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) that may be used in the terminal device, or the methods and operations implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) that may be used in the network device.

The method embodiments provided by the embodiments of the present application are described above, and the device embodiments provided by the embodiments of the present application will be described below. It should be understood that the descriptions of the apparatus embodiments and the descriptions of the method embodiments correspond to each other, and thus, descriptions of details not described may be referred to the above method embodiments, which are not repeated herein for brevity.

The above description has been presented mainly from the point of interaction between the network elements. It will be appreciated that each network element, e.g. the transmitting device or the receiving device, in order to implement the above-mentioned functions, comprises corresponding hardware structures and/or software modules for performing each function. Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application may divide the function modules of the transmitting end device or the receiving end device according to the above method example, for example, each function module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. The following description will take an example of dividing each functional module into corresponding functions.

Fig. 9 is a schematic block diagram of a communication device 900 provided in an embodiment of the present application. The communication device 900 comprises a transceiver unit 910 and a processing unit 920. The transceiver unit 910 may communicate with the outside, and the processing unit 910 is used for data processing. The transceiver unit 910 may also be referred to as a communication interface or a communication unit.

The communication device 900 may be configured to perform the actions performed by an IAB node (e.g., an IAB node mentioned above, or a subordinate node, or a relay device) in the above method embodiments, or the communication device 900 may be configured to perform the actions performed by a network device (e.g., a donor base station, a superordinate node) in the above method embodiments.

As an implementation, the communication device 900 may be configured to perform the actions performed by the IAB node (e.g., the IAB node mentioned above, or a subordinate node, or a relay device) in the above method embodiment one to embodiment four, where the communication device 900 may be referred to as an IAB node. The transceiving unit 910 is configured to perform transceiving-related operations of the IAB nodes (e.g., the IAB nodes mentioned above, or the subordinate nodes, or the relay devices) in the first to fourth embodiments of the above method, and the processing unit 920 is configured to perform processing-related operations of the IAB nodes (e.g., the IAB nodes mentioned above, or the subordinate nodes, or the relay devices) in the first to fourth embodiments of the above method.

In one implementation manner, the transceiver 910 is configured to periodically receive a plurality of remaining minimum system information RMSI from a superordinate node, where part of the RMSI carries configuration information of a first random access resource, where the configuration information of the first random access resource is used to initiate random access to the superordinate node, and at least part of the RMSI includes indication information, where the indication information is used to indicate a time domain location of the configuration information of the first random access resource;

A processing unit 420, configured to obtain the first random access resource based on the indication information; and initiating random access to the upper node based on the first random access resource.

Therefore, according to the scheme provided by the application, the configuration information of the random access resources of the IAB node is only carried in part of the RMSI, and the indication information indicating the time domain position of the random access resource configuration information of the IAB node is carried in at least part of the RMSI, so that the random access resource configuration information of the terminal equipment and the configuration information of the random access resources of the IAB node are not required to be carried in all the RMSIs, and the system overhead can be reduced.

Optionally, in some embodiments, the indication information is a system frame offset value, and the value of the indication information is X, where X is represented as configuration information of the first random access resource carried on an xth system frame from the current system frame, and the value of the X is greater than or equal to 1.

Optionally, in some embodiments, the indication information is the number of RMSI periods, the value is Y, where Y represents that after going through Y RMSI periods, configuration information of the first random access resource exists on the y+1st RMSI, and the value of Y is greater than or equal to 1.

Optionally, in some embodiments, the indication information is a period T and an offset value M of configuration information of the first random access resource.

Optionally, in some embodiments, the system frame number F where the first random access resource is located satisfies the following formula:

Optionally, in some embodiments, the indication information is a multiple of a RMSI period, the value is N, where N indicates that configuration information of the first random access resource exists on every N RMSIs, or configuration information of the first random access resource exists on every N-1 RMSIs, and the value of N is greater than or equal to 1.

Optionally, in some embodiments, the configuration information of the first random access resource includes one or more of the following information:

In another embodiment, the transceiver unit 910 is configured to periodically receive a plurality of remaining minimum system information RMSI, where at least part of the RMSI carries scheduling information, where the scheduling information is used to indicate a time-frequency location of configuration information of a first random access resource, where the configuration information of the first random access resource is used to initiate random access to an upper node; wherein the scheduling information includes one or more of the following information:

the method comprises the steps of a period of configuration information of a first random access resource, a frequency domain position of the configuration information of the first random access resource, a type of scheduling information and an update indication;

a processing unit 920, configured to determine a random access resource based on configuration information of the first random access resource indicated by the scheduling information; and accessing to a superior node based on the determined random access resource. And the frequency domain position of the configuration information of the first random access resource is index information of a search space.

Optionally, in some embodiments, when the type of the scheduling information takes a first value, the scheduling information is represented as scheduling information of other system information OSI;

when the type of the scheduling information takes a second value, indicating that the scheduling information is the scheduling information of the configuration information of the first random access resource;

Optionally, in some embodiments, when the update indication takes a first value, it indicates that the node does not need to update its random access resource; and when the update instruction takes a second value, the node is instructed to update the random access resource of the node.

The configuration information of the first random access resource in this embodiment may be carried on other system information OSI, and only the RMSI carries scheduling information, which indicates the time domain position of the configuration information of the random access resource of the IAB node, so that overhead may be saved.

In another embodiment, the transceiver unit 910 is configured to periodically receive, from the host base station, configuration information of random access resources, where the configuration information of random access resources indicates at least two first random access resources, where the at least two first random access resources do not overlap completely in a time domain, and where the at least two first random access resources are configured to receive, by the DU module, a random access request of a lower node;

the transceiver unit 910 is further configured to receive configuration information of a second random access resource from the home base station, where the configuration information of the second random access resource is used for the MT module to access the home base station.

And a processing unit 920, configured to determine, according to the configuration information of the first random access resource and the configuration information of the second random access resource, one of the two first access resources as a random access resource configured by a DU module for a lower node, where the random access resource configured by the DU module for the lower node and the second random access resource do not overlap in a time domain.

In this embodiment, even if the IAB node performs backhaul link switching (including recovering to other neighboring nodes), the position of the IAB MT module for transmitting random access resources needs to be changed according to the new upper node, and the host base station does not need to reconfigure the node, the child node of the node, and the node on the next entire link, so that signaling overhead is greatly reduced.

In another embodiment, the transceiver unit 910 is configured to periodically receive, from the host base station, configuration information of a random access resource, where the configuration information is carried in a part of RMSI, and at least part of RMSI carries a system frame where the PRACH configuration information is located or first indication information of the located RMSI.

The transceiver unit 910 is further configured to receive second indication information from the host base station, where the second indication information is used to indicate a time domain location of available random access resource configuration information or indicate a time domain location of muted random access resource configuration information.

A processing unit 920, configured to determine, based on the second indication information, a random access resource available to the MT module.

As another implementation, the communication device 900 may be used to perform the actions performed by the network device (e.g., the upper node or the donor base station) in the above method embodiments one to four, where the communication device 900 may be referred to as a network device. The transceiver unit 910 is configured to perform the transceiver-related operations on the network device side in the above method embodiments one to four, and the processing unit 920 is configured to perform the processing-related operations on the network device in the above method embodiments one to four.

In the present implementation of the method, in one embodiment,

a processing unit 920, configured to obtain a plurality of remaining minimum system information RMSI, where a portion of the RMSI carries configuration information of a first random access resource, and is used for random access of a backhaul link of a lower node, and at least a portion of the RMSI includes indication information, where the indication information is used to indicate a time domain position of the configuration information of the first random access resource;

a transceiver unit 910, configured to periodically send the plurality of RMSIs.

Therefore, according to the scheme provided by the application, the configuration information of the random access resources of the IAB node is only carried in part of the RMSI, and the indication information indicating the time domain position of the random access resource configuration information of the IAB node is carried in at least part of the RMSI, so that the configuration information of the random access resources special for the terminal equipment and the IAB is not required to be carried in all the RMSIs, and the system overhead can be reduced.

In another embodiment, the processing unit 920 is configured to obtain a plurality of remaining minimum system information RMSI, where at least part of the RMSI carries scheduling information, where the scheduling information is used to indicate a time-frequency location of configuration information of a first random access resource, and is used to return random access of a link to a lower node; wherein the scheduling information includes one or more of the following information:

The method comprises the steps of a period of configuration information of a first random access resource, a frequency domain position of the configuration information of the first random access resource, a type of scheduling information and an update instruction.

A transceiver unit 910, configured to send the plurality of RMSIs periodically.

It is to be appreciated that the processing unit 920 in the above embodiments may be implemented by a processor or processor-related circuitry, and the transceiver unit 910 may be implemented by a transceiver or transceiver-related circuitry.

As shown in fig. 10, the embodiment of the present application further provides a communication device 1000. The communication device 1000 comprises a processor 1010, a memory 1020 and a transceiver 1030, the memory 1020 having stored therein a program, the processor 1010 being adapted to execute the program stored in the memory 1020, execution of the program stored in the memory 1020 causing the processor 1010 to perform the relevant processing steps in the above method embodiments, execution of the program stored in the memory 1020 causing the processor 1010 to control the transceiver 1030 to perform the transceiving relevant steps in the above method embodiments.

In particular, the transceiver 1030 includes radio frequency circuitry and an antenna. For example, in one implementation, processing unit 1020 is configured to perform step 410 of fig. 4A, or to perform step 510 of fig. 5A, or to perform step 730 of fig. 7A, or to perform step 830 of fig. 8A. The transceiving unit 1010 is further configured to perform step 420 shown in fig. 4A, or step 520 in fig. 5A, or steps 710 and 720 in fig. 7A, or steps 810 and 820 in fig. 8A.

For another example, in another implementation, processing unit 1020 is configured to perform step 440 in fig. 4A or to perform step 540 in fig. 5A.

It should be understood that fig. 10 is only an example and not a limitation, and the above-described communication device including the transceiving unit and the processing unit may not depend on the structure shown in fig. 10.

When the communication device 1000 is a chip, the chip includes a transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit or a communication interface; the processing unit may be an integrated processor or microprocessor or an integrated circuit on the chip.

The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, where the computer program when executed by a computer causes the computer to implement the method on the terminal device side or the method on the network device side in the method embodiment.

The embodiment of the application also provides a computer program product containing instructions, which when executed by a computer, cause the computer to implement the method on the terminal device side or the method on the network device side in the method embodiment.

Any explanation and beneficial effects of the related content in any of the communication devices provided above may refer to the corresponding method embodiments provided above, and are not described herein.

In the embodiment of the application, the terminal device or the network device includes a hardware layer, an operating system layer running above the hardware layer, and an application layer running above the operating system layer. The hardware layer includes hardware such as a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processes through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address book, word processing software, instant messaging software and the like. Further, the embodiment of the present application is not particularly limited to the specific structure of the execution body of the method provided in the embodiment of the present application, as long as the communication can be performed by the method provided in the embodiment of the present application by running the program recorded with the code of the method provided in the embodiment of the present application, and for example, the execution body of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call the program and execute the program.

Furthermore, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape, etc.), optical disks (e.g., compact Disk (CD), digital versatile disk (digital versatile disc, DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks, key drives, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

It should be appreciated that the processors referred to in the embodiments of the present application may be central processing units (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory referred to in the embodiments of the present application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM).

Note that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, the memory (storage module) is integrated into the processor.

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of configuring information, comprising:

a first node obtains a plurality of pieces of Residual Minimum System Information (RMSI), wherein part of the RMSI carries configuration information of a first random access resource, the configuration information of the first random access resource is used for a second node to access the first node, and at least part of the RMSI comprises indication information, and the indication information is used for indicating the time domain position of the configuration information of the first random access resource;

the plurality of RMSIs are transmitted periodically.

2. The method of claim 1, wherein the indication information is a system frame offset value X, where X is represented as configuration information of the first random access resource carried on an xth system frame from the current system frame, and the value of X is greater than or equal to 1.

3. The method of claim 1, wherein the indication information is a RMSI period number Y, and the Y represents configuration information of the first random access resource existing on a y+1st RMSI after undergoing Y RMSI periods, and a value of Y is greater than or equal to 1.

4. The method according to claim 1, wherein the indication information is a period T and an offset value M of configuration information of the first random access resource.

5. The method of claim 4, wherein the system frame number F where the configuration information of the first random access resource is located satisfies the following formula:

6. The method of claim 1, wherein the indication information is a multiple N of the RMSI period, where N represents that the configuration information of the first random access resource exists on every N RMSIs, or that the configuration information of the first random access resource exists on every N-1 RMSIs, and the value of N is greater than or equal to 1.

7. The method according to any of claims 1-6, wherein the configuration information of the random access resource comprises one or more of the following information:

8. A method of configuring information, comprising:

a first node periodically receives a plurality of pieces of Residual Minimum System Information (RMSI) from a second node, wherein part of the RMSI carries configuration information of a first random access resource, the configuration information of the first random access resource is used for the first node to access the second node, and at least part of the RMSI comprises indication information, and the indication information is used for indicating the time domain position of the configuration information of the first random access resource;

the first node determines the first random access resource based on the indication information;

the first node initiates random access to the second node based on the first random access resource.

9. The method of claim 8, wherein the indication information is a system frame offset value X, where X is represented as configuration information of the first random access resource carried on an xth system frame from the current system frame, and the value of X is greater than or equal to 1.

10. The method of claim 8, wherein the indication information is a number of RMSI periods or a multiple Y, where Y represents configuration information of the first random access resource existing on a y+1st RMSI after undergoing Y RMSI periods, and a value of Y is greater than or equal to 1.

11. The method of claim 8, wherein the indication information is a period T and an offset value M in which configuration information of the first random access resource occurs.

12. The method of claim 11, wherein a system frame number F where the configuration information of the first random access resource is located satisfies the following formula:

13. The method of claim 8, wherein the indication information is a multiple N of the RMSI period, where N indicates that the configuration information of the first random access resource exists on every N RMSIs, or that the configuration information of the first random access resource exists on every N-1 RMSIs, and the value of N is greater than or equal to 1.

14. The method according to any of claims 8-13, wherein the configuration information of the first random access resource comprises one or more of the following information:

15. An apparatus, comprising:

a processing unit, configured to obtain a plurality of remaining minimum system information RMSI, where a portion of the RMSI carries configuration information of a first random access resource, where the configuration information of the first random access resource is used for random access of a backhaul link of a lower node, and at least a portion of the RMSI includes indication information, where the indication information is used to indicate a time domain position of the configuration information of the first random access resource;

and a transmitting unit which periodically transmits the plurality of RMSIs to the subordinate node.

16. The apparatus of claim 15, wherein the indication information is a system frame offset value X, where X is represented as configuration information of the first random access resource carried on an xth system frame from a current system frame, and the value of X is greater than or equal to 1.

17. The apparatus of claim 15, wherein the indication information is a RMSI period number Y, the Y represents configuration information of the first random access resource existing on a y+1st RMSI after undergoing Y RMSI periods, and a value of Y is greater than or equal to 1.

18. The apparatus of claim 15, wherein the indication information is a period T and an offset value M of configuration information of the first random access resource.

19. The apparatus of claim 18, wherein the system frame number F where the first random access resource is located satisfies the following formula:

20. The apparatus of claim 15, wherein the indication information is a multiple N of a RMSI period, where N indicates that configuration information of the first random access resource exists on every N RMSIs, or that configuration information of the first random access resource exists on every N-1 RMSIs, and a value of N is greater than or equal to 1.

21. The apparatus according to any of claims 15-20, wherein the configuration information of the first random access resource comprises one or more of the following information:

22. An apparatus, comprising:

a receiving unit, configured to periodically receive a plurality of pieces of remaining minimum system information RMSI from an upper node, where a part of the RMSI carries configuration information of a first random access resource, where the configuration information of the first random access resource is used to access the upper node, and at least a part of the RMSI includes indication information, where the indication information is used to indicate a time domain location of the configuration information of the first random access resource;

the processing unit is used for acquiring the first random access resource based on the indication information; and initiating random access to the upper node based on the first random access resource.

23. The apparatus of claim 22, wherein the indication information is a system frame offset value X, where X is represented as configuration information of the first random access resource carried on an xth system frame from a current system frame, and the value of X is greater than or equal to 1.

24. The apparatus of claim 22, wherein the indication information is a RMSI period number Y, the Y represents configuration information of the first random access resource existing on a y+1rmsi after undergoing Y RMSI periods, and a value of Y is greater than or equal to 1.

25. The apparatus of claim 22, wherein the indication information is a period T and an offset value M of occurrence of configuration information of the first random access resource.

26. The apparatus of claim 25, wherein a system frame number F where the configuration information of the first random access resource is located satisfies the following formula:

27. The apparatus of claim 22, wherein the indication information is a multiple N of a RMSI period, where N indicates that the configuration information of the first random access resource exists on every N RMSIs, or that the configuration information of the first random access resource exists on every N-1 RMSIs, and the value of N is greater than or equal to 1.

28. The apparatus according to any of claims 22-27, wherein the configuration information of the first random access resource comprises one or more of the following:

29. A method of configuring information, comprising:

obtaining a plurality of pieces of Residual Minimum System Information (RMSI), wherein part of the RMSI carries configuration information of a first random access resource, and at least part of the RMSI carries scheduling information, the scheduling information is used for indicating the time-frequency position of the configuration information of the first random access resource, and the configuration information of the first random access resource is used for random access of a backhaul link of a lower node;

periodically transmitting the plurality of RMSIs to the subordinate node;

30. The method of claim 29, wherein the frequency domain location of the configuration information of the first random access resource is index information of a search space.

31. The method according to claim 29 or 30, characterized in that when the type of the scheduling information takes a first value, the scheduling information is characterized as scheduling information of other system information OSI;

and when the type of the scheduling information takes a second value, the scheduling information is represented as the scheduling information of the first random access resource.

32. The method according to any of claims 29-31, wherein when the update indication takes a first value, it indicates that the lower node does not need to update its own random access resources; and when the update instruction takes a second value, the lower node is instructed to update the random access resource of the lower node.

33. A method of configuring information, comprising:

the method comprises the steps that a lower node periodically receives a plurality of pieces of Residual Minimum System Information (RMSI), wherein part of the RMSI carries configuration information of a first random access resource, and at least part of the RMSI carries scheduling information, the scheduling information is used for indicating a time-frequency position of the configuration information of the first random access resource, and the configuration information of the first random access resource is used for random access of a backhaul link of the lower node; wherein the scheduling information includes one or more of the following information:

34. The method of claim 33, wherein the frequency domain location of the configuration information of the first random access resource is index information of a search space.

35. The method according to claim 33 or 34, characterized in that when the type of the scheduling information takes a first value, the scheduling information is characterized as scheduling information of other system information OSI;

and when the type of the scheduling information takes a second value, indicating that the scheduling information is the scheduling information of the configuration information of the first random access resource.

36. The method according to any of claims 33-35, wherein when the update indication takes a first value, it indicates that the lower node does not need to update its own random access resources; and when the update instruction takes a second value, the lower node is instructed to update the random access resource of the lower node.

37. An apparatus, comprising:

a processing unit, configured to obtain a plurality of remaining minimum system information RMSI, where a part of the RMSI carries configuration information of a first random access resource, and at least a part of the RMSI carries scheduling information, where the scheduling information is used to indicate a time-frequency location of the configuration information of the first random access resource, and the configuration information of the first random access resource is used for random access of a backhaul link of a lower node;

38. An apparatus, comprising:

a receiving unit, configured to periodically receive a plurality of remaining minimum system information RMSI from an upper node, where part of the RMSI carries configuration information of a first random access resource, and at least part of the RMSI carries scheduling information, where the scheduling information is used to indicate a time-frequency location of the configuration information of the first random access resource, and the configuration information of the first random access resource is used for random access of a backhaul link; wherein the scheduling information includes one or more of the following information:

a processing unit, configured to determine a random access resource based on configuration information of a first random access resource indicated by the scheduling information; and accessing the superior node based on the determined random access resource.

39. A computer storage medium having stored thereon a computer program which, when executed by a computer, causes the computer to carry out the method of any one of claims 1 to 7 or cause the computer to carry out the method of any one of claims 8 to 13 or cause the computer to carry out the method of any one of claims 29 to 32 or cause the computer to carry out the method of any one of claims 33 to 36.