CN113067686B

CN113067686B - RIM-RS sending method and device

Info

Publication number: CN113067686B
Application number: CN202010001418.XA
Authority: CN
Inventors: 柯颋; 吴丹; 刘建军; 王启星; 刘光毅; 张静文
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2023-07-21
Anticipated expiration: 2040-01-02
Also published as: CN113067686A

Abstract

The invention provides a method and a device for transmitting RIM-RS, belonging to the technical field of wireless communication. The RIM-RS sending method is applied to the first communication equipment and comprises the following steps: at least two sets of RIM-RSs are configured for the ground network, configuration information of each RIM-RS comprises one or two uplink and downlink conversion periods, and the uplink and downlink conversion periods of the at least two sets of RIM-RSs are configured differently. The technical scheme of the invention can solve the problem of remote interference management under a non-quasi-isomorphic network.

Description

RIM-RS sending method and device

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for transmitting RIM-RS.

Background

When the atmospheric waveguide phenomenon occurs, a base station of the ground network and an air-to-ground (ATG) base station may generate far-end interference with each other. When the atmospheric waveguide phenomenon occurs, the ATG base station needs to execute interference avoidance operation so as to avoid interference with the ground network performance; the ground network does not need to additionally avoid the interference of the ground network to the ATG network. The related art has a problem in that an air-to-group (ATG) base station cannot detect a remote interference management reference signal (Remote Interference Management Reference Signal, RIM-RS) transmitted by a part of a ground network base station due to the use of different time-division duplex (TDD) uplink and downlink switching periods by the ATG network and the ground network.

Disclosure of Invention

The invention aims to provide a method and a device for transmitting RIM-RS, which can solve the problem of remote interference management under a non-quasi-isomorphic network.

In order to solve the technical problems, the embodiment of the invention provides the following technical scheme:

the embodiment of the invention provides a RIM-RS sending method, which is applied to first communication equipment and comprises the following steps:

at least two sets of RIM-RSs are configured for the ground network, configuration information of each RIM-RS comprises one or two uplink and downlink conversion periods, and the uplink and downlink conversion periods of the at least two sets of RIM-RSs are configured differently.

Optionally, the configuration of the uplink and downlink conversion periods of the at least two sets of RIM-RSs is different, any one of the following conditions is satisfied,

the at least two sets of RIM-RSs only comprise an uplink-downlink conversion period, and T1 is not equal to T2, wherein T1 is the uplink-downlink conversion period of a first set of RIM-RSs in the at least two sets of RIM-RSs, and T2 is the uplink-downlink conversion period of a second set of RIM-RSs in the at least two sets of RIM-RSs;

the at least two sets of RIM-RSs comprise two uplink and downlink conversion periods, and T1A is not equal to T2A or T1B is not equal to T2B, wherein T1A, T B is the uplink and downlink conversion period of a first set of RIM-RSs in the at least two sets of RIM-RSs, and T2A, T B is the uplink and downlink conversion period of a second set of RIM-RSs in the at least two sets of RIM-RSs;

At least one set of RIM-RS in the at least two sets of RIM-RSs only comprises one uplink and downlink conversion period, and other RIM-RSs in the at least two sets of RIM-RSs comprise two uplink and downlink conversion periods.

Alternatively, the process may be carried out in a single-stage,

if the at least two sets of RIM-RSs all comprise only one uplink-downlink conversion period, T1> T2, and T1 is an integer multiple of T2, where T1 is the uplink-downlink conversion period of a first set of RIM-RSs in the at least two sets of RIM-RSs, and T2 is the uplink-downlink conversion period of a second set of RIM-RSs in the at least two sets of RIM-RSs;

or, if at least one RIM-RS of the at least two RIM-RS sets includes only one up-down conversion period T1, and the other RIM-RS of the at least two RIM-RS sets includes two up-down conversion periods T2A and T2B, T1> (t2a+t2b), and T1 is an integer multiple of (t2a+t2b).

Optionally, the configuration information of each RIM-RS further includes a set of scrambling code IDs, the set of scrambling code IDs including at least 1 scrambling code ID, and elements in the set of scrambling code IDs of different RIM-RS are different.

Optionally, the starting time domain offsets of the at least two sets of RIM-RSs within a RIM-RS transmission period are different.

Optionally, the at least two sets of RIM-RSs include a first RIM-RS type 1 and a third RIM-RS type 3, the method including at least one of:

Continuously transmitting at least RIM-RS type 1 and RIM-RS type 3 when the first communication device detects that an interference noise IoT rises above a preset threshold;

stopping transmitting any type of RIM-RS when the first communication device does not detect any type of RIM-RS;

the first communication device does not listen to RIM-RS type 3.

Optionally, the first communication device is a base station of a terrestrial network.

The embodiment of the invention also provides a RIM-RS sending method, which is applied to the first communication equipment and comprises the following steps:

and configuring a set of RIM-RS for the ground network, wherein the time domain position of the transmission resource of the RIM-RS in the RIM-RS transmission period changes with time.

Alternatively, the transmission resources of the RIM-RS are defined by variablesDetermining, wherein-> And the resource indications in the time domain parameter list, the frequency domain parameter list and the sequence parameter list respectively correspond to the OAM configuration.

Optionally, the time domain position of the transmission resource of the RIM-RS in the RIM-RS transmission period changes with time, and the time domain resource indicatesIs determined by at least one of the following:

the method comprises the steps of starting time domain offset, the number of candidate sequences of the current RIM-RS type, the number of continuous uplink and downlink conversion periods of the current RIM-RS type, device identification set ID of a first communication device and time parameters.

Optionally, time domain resource indicationIs determined by the following formula:

wherein T is _start In order to initiate the time domain offset,the number of candidate sequences representing the current RIM-RS type,r represents the number of continuous up-down conversion periods of the current RIM-RS type, n _setID A set ID representing the first communication device; />Is a time parameter; />Is a positive integer; f (·), is an arbitrary function.

And/or the number of the groups of groups,

its frequency domain resource indicationIs determined by the following formula:

and/or, sequence indicationIs determined by the following formula:

wherein,,

optionally, the function f (x, t) has at least one of the following properties:

f (x, t) is a one-to-one mapping function of x;

when the value range of x is [ a, b ], the value range of f (x, t) is also [ a, b ]; wherein a and b are non-zero integers.

The embodiment of the invention also provides a RIM-RS sending method, which is applied to the second communication equipment and comprises the following steps:

configuring a set of RIM-RS for a ground-to-air network, wherein configuration information of the RIM-RS comprises 1 uplink and downlink conversion period or 2 uplink and downlink conversion periods;

periodically listening to the RIM-RS transmitted by the first communication device, the second communication device not transmitting any RIM-RS.

Optionally, the method further comprises at least one of:

When the RIM-RS sent by the first communication equipment is detected, an interference suppression mechanism is started;

and stopping an interference suppression mechanism when the RIM-RS transmitted by the first communication device is not detected.

Optionally, the periodically listening to the RIM-RS sent by the first communication device includes any one of:

the method comprises the steps of monitoring two sets of RIM-RSs sent by a first communication device, wherein the uplink and downlink conversion period of one set of RIM-RSs is the same as the uplink and downlink conversion period of the RIM-RSs configured by a second communication device;

a set of RIM-RS sent by first communication equipment is intercepted, and the first communication equipment at least sends two sets of RIM-RS, wherein the uplink and downlink conversion periods of the at least two sets of RIM-RS are different;

and intercepting a set of RIM-RS sent by the first communication equipment, wherein the time domain position of the transmission resource of the RIM-RS in the RIM-RS transmission period changes along with time.

Optionally, the second communication device is a ground-to-air network base station.

The embodiment of the invention also provides a RIM-RS sending device, which is applied to the first communication equipment and comprises:

the configuration module is used for configuring at least two sets of RIM-RSs for the ground network, the configuration information of each RIM-RS comprises one or two uplink and downlink conversion periods, and the uplink and downlink conversion periods of the at least two sets of RIM-RSs are configured differently.

Alternatively, the process may be carried out in a single-stage,

Optionally, the at least two sets of RIM-RSs include a first RIM-RS type 1 and a third RIM-RS type 3, the apparatus further comprising:

a processing module for performing at least one of:

the first communication device does not listen to RIM-RS type 3.

And the configuration module is used for configuring a set of RIM-RS for the ground network, and the time domain position of the transmission resource of the RIM-RS in the RIM-RS transmission period changes along with time.

And/or frequency domain resource indicationIs determined by the following formula:

and/or, sequence indication Is determined by the following formula:

wherein,,

optionally, the function f (x, t) has at least one of the following properties:

f (x, t) is a one-to-one mapping function of x;

The embodiment of the invention also provides a transmitting device of the RIM-RS, which is applied to the first communication equipment and comprises a processor and a transceiver,

the processor is used for configuring at least two sets of RIM-RSs for a ground network, configuration information of each RIM-RS comprises one or two uplink and downlink conversion periods, and the uplink and downlink conversion periods of the at least two sets of RIM-RSs are configured differently.

Alternatively, the process may be carried out in a single-stage,

Optionally, the at least two sets of RIM-RSs include a first RIM-RS type 1 and a third RIM-RS type 3, the transceiver further configured to perform at least one of:

the first communication device does not listen to RIM-RS type 3.

and the processor is used for configuring a set of RIM-RS for the ground network, and the time domain position of the transmission resource of the RIM-RS in the RIM-RS transmission period changes with time.

Optionally, the transmission resource of the RIM-RS is in the RIM-RS transmission periodTime domain location changes over time with time domain resource indicationIs determined by at least one of the following:

wherein T is _start In order to initiate the time domain offset,the number of candidate sequences representing the current RIM-RS type,r represents the number of continuous up-down conversion periods of the current RIM-RS type, n _setID A set ID representing the first communication device; />Is a time parameter; />Is a positive integer; f (·, ·) is an arbitrary function; and/or frequency domain resource indication ++>Is determined by the following formula:

and/or, sequence indicationIs determined by the following formula:

wherein,,

optionally, the function f (x, t) has at least one of the following properties:

f (x, t) is a one-to-one mapping function of x;

The variables areIs determined by at least one of the following:

the method comprises the steps of starting time domain offset, the number of candidate sequences of a current RIM-RS type, the number of continuous uplink and downlink conversion periods of the current RIM-RS type and equipment identification set ID of first communication equipment; the variables areIs determined by at least one of the following:

the number of candidate frequency domain resources configured by the network, the number of candidate sequences of the current RIM-RS type and the set ID of the first communication equipment;

the variables areIs determined by at least one of the following:

A starting time domain offset, a number of candidate sequences of a current RIM-RS type, a set ID of the first communication device.

wherein T is _start In order to initiate the time domain offset,the number of candidate sequences representing the current RIM-RS type,r represents the number of continuous up-down conversion periods of the current RIM-RS type, n _setID A set ID representing the first communication device; f (·) is an arbitrary function.

Start time domain offset T _start Is determined by the following formula:

the RIM-RS includes a first RIM-RS type 1 and a second RIM-RS type 2,represents the total Set ID number of RIM-RS type 1, R ₁ Representing that each base station transmits RIM-RS RIM-RS including first RIM-RS type 1 and second RIM-RS type 2, the number of uplink and downlink conversion cycles continuously occupied by type 1, < >>Representing the number of candidate frequency domain resources of the network configuration, +.>Representing the number of candidate sequences that RIM-RS type 1 can use,/for>Represents the total Set ID number of RIM-RS type 2, R ₂ Represents the number of uplink and downlink switching cycles continuously occupied by each base station transmitting RIM-RS type 2,/or%>Representing the number of candidate sequences that RIM-RS type 2 can use. Optionally, the first communication device is a base station of a terrestrial network.

The embodiment of the invention also provides a RIM-RS sending device, which is applied to the second communication equipment and comprises:

The configuration module is used for configuring a set of RIM-RS for the ground-to-air network, wherein the configuration information of the RIM-RS comprises 1 uplink-downlink conversion period or 2 uplink-downlink conversion periods;

and the interception module is used for periodically intercepting the RIM-RS sent by the first communication equipment and not sending any RIM-RS.

Optionally, the interception module is further configured to perform at least one of:

Optionally, the interception module is configured to perform any one of the following:

The embodiment of the invention also provides a transmitting device of the RIM-RS, which is applied to second communication equipment and comprises a processor and a transceiver,

the processor is used for configuring a set of RIM-RS for the ground-to-air network, and the configuration information of the RIM-RS comprises 1 uplink-downlink conversion period or 2 uplink-downlink conversion periods;

the transceiver is configured to periodically listen to the RIM-RS transmitted by the first communication device without transmitting any RIM-RS.

Optionally, the transceiver is further configured to perform at least one of:

Optionally, the transceiver is configured to perform any one of:

An embodiment of the present invention provides a communication apparatus including: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps in the method of RIM-RS transmission as described above.

Embodiments of the present invention provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps in a RIM-RS transmission method as described above.

The embodiment of the invention has the following beneficial effects:

in the above scheme, the first communication device configures at least one set of RIM-RS, where the at least one set of RIM-RS includes different uplink and downlink conversion periods or transmission resources of the RIM-RS change with time, and when the at least one set of RIM-RS includes different uplink and downlink conversion periods, by reasonably configuring time domain transmission resources, it is ensured that the ATG-RIM-RS can be detected by the ATG base station; when the transmission resource of the RIM-RS changes along with time, the RIM-RS periodically transmitted by any ground network base station can be ensured, and at least part of the RIM-RS transmitted in the time interval can be heard by the ATG base station, so that the problem of remote interference management under a non-quasi-isomorphic network is solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a remote interference management process;

FIG. 2 is a diagram of the time domain transmission position of the RIM-RS;

FIG. 3 is a schematic diagram of an ATG network;

FIG. 4 is a schematic diagram of a RIM-RS sent by a terrestrial network that cannot be heard by an ATG base station;

fig. 5A and fig. 5B are schematic flow diagrams of a method for transmitting RIM-RS on the first communication device side according to an embodiment of the present invention;

FIG. 6 is a diagram of RIM-RS type 3 according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of time domain positions of RIM-RS type 1 and RIM-RS type 2 according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of time domain positions of RIM-RS type 1, RIM-RS type 2 and RIM-RS type 3 according to an embodiment of the present invention;

fig. 9 is a flowchart of a method for transmitting RIM-RS on the second communication device side according to an embodiment of the present invention;

fig. 10 is a block diagram of a transmitting apparatus of a remote interference management reference signal on a first communication device side according to an embodiment of the present invention;

Fig. 11 is a schematic diagram illustrating a configuration of a transmitting device of a remote interference management reference signal on a first communication device side according to an embodiment of the present invention;

fig. 12 is a block diagram of a transmitting apparatus of a remote interference management reference signal on a second communication device side according to an embodiment of the present invention;

fig. 13 is a schematic diagram of a transmission apparatus of a remote interference management reference signal on a second communication device side according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention more apparent, the following detailed description will be given with reference to the accompanying drawings and the specific embodiments.

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

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

The techniques described herein are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems and may also be used for various wireless communication systems such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), 5G New air interface (New Radio, NR), and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system may implement radio technologies such as CDMA2000, universal terrestrial radio access (Universal Terrestrial Radio Access, UTRA), and the like. UTRA includes wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as the global system for mobile communications (Global System for Mobile Communication, GSM). OFDMA systems may implement radio technologies such as ultra mobile broadband (UltraMobile Broadband, UMB), evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, flash-OFDM, and the like. UTRA and E-UTRA are parts of the universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS). LTE and higher LTE (e.g., LTE-a) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-a and GSM are described in the literature from an organization named "third generation partnership project" (3rd Generation Partnership Project,3GPP). CDMA2000 and UMB are described in the literature from an organization named "third generation partnership project 2" (3 GPP 2). The techniques described herein may be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. However, the following description describes an NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.

The following description provides examples and does not limit the scope, applicability, or configuration as set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

In inland regions where the spring, summer and autumn are crossed, or coastal regions in winter, an Atmospheric wave guide (Atmospheric Duct) phenomenon is liable to occur. There is a level of inversion or drastic decrease in water vapor with height in the troposphere, called the waveguide layer, in which most of the radio wave radiation will be confined for ultra-long distance (e.g., tens to hundreds of kilometers) propagation with lower path loss. For time-division duplex (TDD) systems, after a downlink signal of a remote base station propagates over an ultra-long distance, strong interference may be caused to uplink data reception of a local base station.

The interference of the remote base station has the characteristics of wide interference range, high frequency, serious degree and the like. Domestic operators find that half of the provinces in China are disturbed when the time division long term evolution (Time Division Long Term, TD-LTE) is operated in the existing network, and serious provinces are disturbed for more than half of the days in the whole year. When interference occurs, uplink background noise is greatly raised, and the uplink performance of the network is deteriorated.

In order to solve the above problems, the related art introduces a New air interface (NR) remote interference management (NR-RIM, remote Interference Management for NR) technology, and proposes a whole set of technical solutions.

The remote interference management mechanism mainly relates to interference identification, interference suppression and three contents of a workflow framework.

The interference identification refers to how to make the interfered base station identify and determine that Uplink (UL) interference is actually generated by the remote base station interference. Specifically, a novel reference signal RIM-RS is designed, and a disturbed base station and a scrambling base station transmit RIM-RSs carrying different functions so as to determine that UL interference is indeed generated by interference of a remote base station by the opposite party and determine when an atmospheric waveguide phenomenon disappears. The related art has standardized the sequence generation method of RIM-RS and the mapping relation between time-frequency code resource and base station group flag (Set ID).

Interference suppression refers to how an interfering base station operates to reduce its interference to a remote base station after identifying itself as the source of interference. In particular, the interference suppression mechanism may be performed from four aspects, namely the time domain, the frequency domain, the spatial domain and the power domain.

The workflow framework refers to a well-established working mechanism that concatenates interference identification and interference suppression, such as determining when a victim base station starts and ends transmitting RIM-RSs, and when a victim base station starts and ends interference suppression mechanisms, etc.

Fig. 1 is a schematic diagram of a flow frame for implementing far-end interference management by using a pure air interface. In this flow framework, two types of reference signals, called RS-1 and RS-2, respectively, are designed. RS-1 is transmitted by the victim base station; when the other base stations detect the RS-1, the other base stations can determine that the other base stations generate far-end interference by taking the other base stations as scrambling base stations. By setting the unified RS-1 time domain transmitting position of the whole network, the scrambling base station can infer the number of downlink symbols which generate far-end interference. In contrast, RS-2 is sent by the Shi Raoji station and functions to assist the victim base station in determining whether the atmospheric waveguide phenomenon is still present, so as to avoid ping-pong effects. Specifically, when the Shi Raoji station detects RS-1, the remote interference suppression mechanism will automatically be turned on and continue to transmit RS-2.

The various steps and events in fig. 1 are explained as follows:

step 0: operation and maintenance administration (Operation Administration and Maintenance, OAM) configures all base stations to periodically listen for RS-1. If the base station detects the RS-1 (event B), judging that the base station is a scrambling base station, and entering step 3;

step 1: the atmospheric waveguide phenomenon occurs, and the downlink transmission of the scrambling base station generates far-end interference on the uplink reception of the scrambling base station;

Step 2: when the victim base station detects that the IoT rises above the threshold (event a), it starts to continuously transmit RS-1 (step 2-1) and continuously monitor RS-1 and RS-2 (step 2-2) until event C occurs;

step 3: the Shi Rao base station starts the remote interference suppression scheme on the downlink symbol generating remote interference to the victim base station (step 3-1), and starts continuously transmitting RS-2 (step 3-2), and continuously listening for RS-1 and RS-2 (step 3-3) until event C occurs.

Event C: when the scrambling base station and/or the interfered base station cannot detect any RS (including RS-1 and RS-2), the atmospheric waveguide phenomenon is considered to be disappeared. At this time, the Shi Rao base station stops the interference suppression mechanism, resumes the normal downlink transmission behavior, and stops the transmission of the RS-2; the interfered base station stops the transmission of the RS-1; the victim base station and Shi Raoji stations stop listening for RS-2.

It should be noted that, the above scheme is based on the basic assumption of quasi-homogeneous network characteristics, and the quasi-homogeneous network refers to that all NR base stations adopt the same uplink-downlink conversion period and have the same downlink transmission boundary.

As shown in fig. 2, under the basic assumption of a quasi-homogeneous network, the Shi Rao base station can know a priori the time domain symbol position of the RIM-RS sent by the interfered base station through network configuration; when the RIM-RS is detected, the propagation distance between the RIM-RS and the interfered base station can be determined, so that which uplink symbols of the interfered base station may cause interference can be identified, and corresponding interference back-off mechanisms and parameters, such as the number of back-off downlink symbols, are determined.

In another flow framework for implementing remote interference management, which needs to rely on a network backhaul interface, only RS-1 is used.

With the development of aviation industry and Internet technology, the demand for ground-air interconnection application is more and more urgent. Through ground-air interconnection, passengers can access the Internet on the plane like the ground to enjoy various Internet application services, and operators, airlines and industry parties can also provide value-added services based on the ground-air interconnection technology.

The air-to-ground (ATG) communication technology utilizes mature land mobile communication technology, such as 4G technology and 5G technology, a special base station capable of covering sky by an antenna is built on the ground, a special network for three-dimensional ground coverage is built, high-altitude three-dimensional coverage is effectively solved, and high-speed ground-air data transmission is realized. The ground base station scheme is developed along with the mobile communication technology, provides a solution with high bandwidth, high flow and low cost, and has the advantages of very large network distribution and upgrading maintenance.

The ATG service can provide on-board entertainment, on-board office, custom service and the like for aviation passengers, has wide industry application prospect, and can be generalized into two applications of video image feedback and sampling data feedback. The video image feedback is widely applied to the fields of flight safety guarantee, offshore rescue, disaster relief, industrial inspection, public security cruising and the like. The sampling data feedback can be widely applied to the scenes such as meteorological data collection, atmospheric environment data collection and the like, and provides high-quality high-end service for various industries. Fig. 3 is a schematic diagram of an ATG network.

Compared with the ground network, the ATG system faces some special challenges and also puts special requirements on the system design:

technical challenge 1: supporting a very large single station coverage radius. ATG systems need to support ultra-large single station coverage radii, such as 100-300 km. For example, in inland areas, a single station coverage radius of 100km is typically required to be supported to reduce the number of ATG base stations and reduce network deployment costs. In addition, in order for a land (e.g., a large link) base station to cover an aircraft over a bay (e.g., a Bohai Bay), ATG networks are required to support a single station coverage radius of 300km at a maximum.

Technical challenge 2: support the ultra-high moving speed. ATG systems need to support aircraft flight speeds of up to 1200km/h, which presents a high challenge for doppler shift estimation and compensation.

Technical challenge 3: the same frequency deployment of the ATG network and the ground network may generate serious intersystem interference. In order to save spectrum resources, it is considered to have the ATG system and the terrestrial cellular communication system use the same operating frequency, such as the NR band of 4.9 GHz. A more serious intersystem interference may occur between the ATG system and the terrestrial NR system.

In particular, for technical challenge 1, a TDD system needs a maximum supporting 2ms TDD uplink/downlink Guard (GP) for a single station coverage radius of 300km. Note that in the frame structure of a given TDD up-down conversion period, the longer the GP, the greater the spectral efficiency penalty. For example, when the TDD up-down conversion period is 5ms, a 2ms GP will result in a 40% spectral efficiency loss; when the TDD up-down conversion period is 10ms, the 2ms GP will result in 20% loss of spectral efficiency; whereas when the TDD up-down conversion period is 20ms, a 2ms GP will result in a 10% loss of spectral efficiency. To limit GP overhead, the ATG system prefers a TDD up-down transition period of 10ms or 20 ms.

On the other hand, in a ground network, GP overhead is essentially negligible due to the limited coverage radius (e.g., 500 m). In order to reduce the Round Trip Time (RTT) of the TDD system, the NR terrestrial network typically uses a shorter TDD up-down conversion period, e.g., 2.5ms.

In summary, the ATG network and the NR ground network will select different TDD uplink-downlink switching periods, where the ATG network prefers a longer TDD uplink-downlink switching period, such as 10ms or 20ms; whereas the NR terrestrial network preferably has a short TDD up-down conversion period, e.g. 2.5ms.

As described above, the related art has developed NR-RIM technology research based on the basic assumption of quasi-homogeneous network characteristics, which means that all NR base stations use the same uplink and downlink switching period and have the same downlink transmission boundary.

Otherwise, if the uplink and downlink switching periods of different base stations in the system are different, the existing remote interference management mechanism cannot work normally.

Fig. 4 is a schematic diagram showing that RIM-RS transmitted by the terrestrial network cannot be heard by the ATG base station, and as shown in fig. 4, when the atmospheric waveguide phenomenon occurs, the base station of the terrestrial network and the ATG base station may generate remote interference with each other. For operators, the ground network deployment scale is large, and is the core service of the operators, so that the operators have the highest service priority. The ATG network deployment scale is small, and is a value-added service, and the service priority is relatively low. Therefore, when the atmospheric waveguide phenomenon occurs, the ATG base station needs to execute interference avoidance operation to avoid interfering with the ground network performance; the ground network does not need to additionally avoid the interference of the ground network to the ATG network.

The time domain transmission position of the RIM-RS in the related art is designed according to the quasi-isomorphic network assumption. In the schematic diagram shown in fig. 4, for a terrestrial NR network, RIM-RS is configured in the last Downlink (DL) slot within each TDD uplink-downlink transition period (2.5 ms).

Note that different base stations (gNB) in the ground network are configured to send RIM-RS in different TDD uplink-downlink conversion periods, so as to reduce the sending overhead of the RIM-RS, and the TDD uplink-downlink conversion period number of the sending RIM-RS has a one-to-one mapping relationship with the base station group ID (Set ID), so that the receiving party of the RIM-RS reversely deduces the number of the base station sending the RIM-RS according to the detected TDD uplink-downlink conversion period number of the RIM-RS, so as to assist the subsequent network planning and optimizing operation.

In the schematic diagram shown in fig. 4, the ATG network uses a TDD up-down conversion period of 10ms, which includes 10 DL slots (slots), 4 slots, 6 UL slots, and a subcarrier spacing of 30kHz.

In fig. 4, assuming that the spatial propagation delay of the RIM-RS signal is 1ms (which is equivalent to a propagation distance of 300 km), the RIM-RS transmitted by the gNB3 and the gNB4 of the terrestrial network just fall in the UL slot of the ATG base station, so that the RIM-RS signal can be detected by the ATG base station; however, RIM-RSs transmitted by the gNB1 and the gNB2 of the terrestrial network fall in DL slots of the ATG base station and cannot be heard by the ATG base station. That is, if DL signals transmitted by the ATG base station interfere with portions of the land network gnbs (e.g., gNB1 and gNB 2), RIM-RSs transmitted by these gnbs will not always be heard by the ATG base station, thus causing the ATG base station to fail to perform corresponding interference backoff operations to reduce interference to these land network interfered base stations.

Aiming at the problem that ATG base stations cannot detect RIM-RS transmitted by partial ground network base stations due to the fact that ATG and ground networks use different TDD uplink and downlink conversion periods, the invention provides an enhanced RIM-RS transmitting method for solving the problem of remote interference management under a non-quasi-isomorphic network.

The embodiment of the invention provides a RIM-RS sending method, which is applied to first communication equipment, as shown in fig. 5A, and comprises the following steps:

step 101: at least two sets of RIM-RSs are configured for the ground network, configuration information of each RIM-RS comprises one or two uplink and downlink conversion periods, and the uplink and downlink conversion periods of the at least two sets of RIM-RSs are configured differently.

In this embodiment, the first communication device configures at least two sets of RIM-RSs, where the at least two sets of RIM-RSs include different uplink and downlink conversion periods, and by reasonably configuring time domain transmission resources, it is ensured that the ATG-RIM-RSs can be heard by the ATG base station, thereby solving the problem of remote interference management in a non-quasi-homogeneous network.

The configuration refers to configuration of the RIM-RS parameters for the base station through OAM, namely, configuration of the OAM.

For each set of RIM-RSs, the configuration information includes at least: 1 up-down conversion cycle (uplink-downlink switching period), or 2 up-down conversion cycles; the uplink and downlink conversion periods of the at least two sets of RIM-RS are different.

Optionally, if the at least two sets of RIM-RSs each include only one uplink-downlink conversion period, T1> T2, where T1 is an integer multiple of T2, where T1 is an uplink-downlink conversion period of a first set of RIM-RSs in the at least two sets of RIM-RSs, and T2 is an uplink-downlink conversion period of a second set of RIM-RSs in the at least two sets of RIM-RSs;

The first communication device may be a base station, including a macro station, a small station, or a relay node or an IAB node, and specifically, the first communication device may be a base station of a ground network.

In the related art, the first communication device may configure 1 set or 2 sets of RIM-RSs, respectively referred to as RIM-RS type 1 and RIM-RS type 2. The 2 sets of RIM-RSs use the same up-down conversion period (uplink-downlink switching period) configuration. The configuration of the RIM-RS uplink and downlink conversion period comprises 1 or 2 uplink and downlink conversion periods which are respectively recorded as

In this embodiment, the first communication device (e.g., a ground network base station) additionally transmits a set of RIM-RS based on the existing RIM-RS type 1 and RIM-RS type 2, which may be denoted as RIM-RS type 3. Wherein the first communication device is selectable: transmitting the RIM-RS type 1 and the RIM-RS type 3, or transmitting the RIM-RS type 1, the RIM-RS type 2 and the RIM-RS type 3.

The RIM-RS type 3 and the existing RIM-RS (i.e., RIM-RS type 1 and RIM-RS type 2) are configured using different up-down conversion periods, and the up-down conversion period of the RIM-RS type 3 is greater than that of the RIM-RS type 1.

In one embodiment, RIM-RS type 1 and RIM-RS type 2 use only 1 up-down conversion period, denoted asAnd RIM-RS type 3 uses only 1 up-down conversion period, which is marked as +.>Wherein (1)>

In another embodiment, RIM-RS type 1 and RIM-RS type 2 use 2 up-down conversion periods, denoted asAnd RIM-RS type 3 uses only 2 up-down conversion periods, which is marked as +.>Wherein (1)>At least 1 element has different values.

In another embodiment, RIM-RS type 1 and RIM-RS type 2 use 2 up-down conversion periods, denoted asAnd RIM-RS type 3 uses only 1 up-down conversion period, which is marked as +.>ThenAnd->

Optionally, in the at least two sets of RIM-RSs, an uplink-downlink conversion period T1 of one set of RIM-RSs is greater than an uplink-downlink conversion period T2 of the other set of RIM-RSs, and T1 is an integer multiple of T2; or (b)

Wherein the up-down conversion period of one set of RIM-RS is T1, the up-down conversion period of the other set of RIM-RS is T2 and T3, and T1 is integer multiple of (T2+T3).

In a specific embodiment, RIM-RS type 1 and RIM-RS type 2 use only 1 up-down conversion period, denoted asAnd RIM-RS type 3 uses only 1 up-down conversion period, which is marked as +.>And- >And->Is->Is an integer multiple of (a).

For example, in FIG. 6,

in another embodiment, RIM-RS type 1 and RIM-RS type 2 use 2 up-down conversion periods, denoted asRIM-RS type 3 uses only 1 up-down conversion period, denoted +.> And->Is->Is an integer multiple of (a).

As shown in fig. 6, each ground network base station is configured with 2 or 3 sets of RIM-RSs, i.e., is configured with RIM-RS type 1 and RIM-RS type 3; or is configured with RIM-RS type 1, RIM-RS type 2, and RIM-RS type 3.

The RIM-RS type 1 and the RIM-RS type 2 are traditional RIM-RS, and the RIM-RS type 3 is the newly added RIM-RS in the embodiment, the functions of the three are different, and after receiving the three RIM-RS types, other base stations trigger different follow-up actions. Therefore, it is necessary to distinguish the three RIM-RSs by various methods (e.g., code domain and/or time domain methods) to avoid confusion.

In one embodiment, the three may be distinguished by code domain, configuring each set of RIM-RSs with a set of scrambling code IDs (a list of configured scrambling identities) comprising at least 1 scrambling code ID (scrambling identities). To distinguish between multiple sets of RIM-RSs, the scrambling code ID sets of different RIM-RSs may be left without the same element.

In one embodiment, the three can be distinguished by the time domain, in existing NR-RIM techniques, each ground network base station is configured with only RIM-RS type 1, or with both RIM-RS type 1 and RIM-RS type 2. If RIM-RS type 1 and RIM-RS type 2 are configured at the same time, RIM-RS type 1 (denoted as RS-1 in the figure) and RIM-RS type 2 (denoted as RS-2 in the figure) have the same RIM-RS transmission period (RIM-RS transmission periodicity) but are located in different time domain sections, as shown in fig. 7.

As shown in fig. 7, different padding colors represent set IDs of different base stations, and #n represents RIM-RS resources to which the set IDs are repeatedly transmitted. The RIM-RS type 1 transmitted by all base stations is located in the first half of the RIM-RS transmission period, and the RIM-RS type 2 transmitted by all base stations is located in the second half of the RIM-RS transmission period.

Starting time domain offset (starting time offset, denoted T) of different RIM-RS types within RIM-RS transmission period _start ) Can be calculated according to the following formula, for example:

wherein, T of RIM-RS type 1 _start =0; and the T of RIM-RS type 2 _start And determining according to the number of the RIM-RS time domain resources occupied by the RIM-RS type 1. Where EnoughIndication is disabled refers to a sufficient (en-high) indication being disabled.

In particular, the method comprises the steps of,represents the total Set ID number of RIM-RS type 1 (the total number of setIDs for RIM-RS type 1), R ₁ Represents the number of uplink and downlink switching cycles (the number of consecutive uplink-downlink switching periods for RIM-RS type 1) continuously occupied by each base station transmitting RIM-RS type 1, for example>Number of candidate frequency domain resources (the number of candidate frequency resources configured in the network) representing network configuration, -a>Represents the number of candidate sequences (the number of sequence candidates for the current RIM-RS resource) that RIM-RS type 1 can use. When the enable indication function is disabled, R is configured for each set ID ₁ Time-frequency code resources; when the enable indication function is enabled, 2·r is configured for each set ID ₁ Time-frequency code resources.

As shown in fig. 8, in order to support RIM-RS type 1 and RIM-RS type 3 at the same time, or RIM-RS type 1, RIM-RS type 2 and RIM-RS type 3 at the same time, different R's may be configuredThe starting transmission position (T) of the IM-RS type in the RIM-RS transmission period _start ) Different.

In one embodiment, T of RIM-RS type 1 _start =0; t of RIM-RS type 2 _start Determining according to the number of RIM-RS time domain resources occupied by the RIM-RS type 1; and RIM-RS type 3T _start And determining according to the total number of RIM-RS time domain resources occupied by the RIM-RS type 1 and the RIM-RS type 2.

For example, for RIM-RS type 3, T may be determined according to the following formula _start For (for RIM-RS type 3):

the first communication device does not listen to RIM-RS type 3.

The present embodiment includes the following three execution bodies: a scrambled base station of a ground network, a scrambling base station of a ground network, and an ATG scrambling base station. Wherein, from the physical equipment, the interfered base station of the ground network and the scrambling base station of the ground network may be the same base station.

The behavior of the interfered base station and/or the scrambling base station of the ground network to start sending and end sending the RIM-RS type 1 and/or the RIM-RS type 2 is consistent with the flow chart shown in fig. 1, and will not be described again here.

The basic design principle of an ATG network is different from a terrestrial network in that: the ATG base station cannot interfere with the base station of the terrestrial network, but allows the base station of the terrestrial network to interfere with the ATG base station.

The transmission and interception of RIM-RS type 3 is thus a unidirectional behaviour, i.e. only the disturbed base station of the ground network (i.e. the first communication device) transmits RIM-RS type 3; only the ATG base station (i.e., the second communication device) listens to the RIM-RS type 3 and triggers a subsequent interference backoff operation.

Wherein the ground network base station (i.e., the first communication device) does not need to listen to RIM-RS type 3, and the ATG base station (i.e., the second communication device) does not need to send and listen to RIM-RS type 1 and/or RIM-RS type 2.

The process flow for RIM-RS type 3 is as follows:

step 0: the OAM configures all ATG base stations to periodically listen to RIM-RS type 3. If the ATG base station detects the RIM-RS type 3, judging that the ATG base station is a scrambling base station, and entering a step 3;

step 1: the atmospheric waveguide phenomenon occurs, and the downlink transmission of the scrambling base station (comprising a ground network base station and an ATG base station) generates remote interference on the uplink reception of a scrambling base station of the ground network;

step 2: when the ground network disturbed base station detects that the IoT rises above a threshold, the ground network disturbed base station starts to continuously send RIM-RS type 1 and RIM-RS type 3 and continuously monitors RIM-RS type 1 and RIM-RS type 2 until an event C occurs;

step 3: the ATG Shi Rao base station starts a remote interference suppression scheme on the downlink symbol that generates remote interference to the interfered base station, and continuously monitors RIM-RS type 3 until event C occurs.

Wherein, event C is: and when the scrambling base station and/or the scrambling base station cannot detect any RS (for example, the ground network base station cannot detect the RIM-RS type 1, the RIM-RS type 2 and the ATG base station cannot detect the RIM-RS type 3), the atmospheric waveguide phenomenon is considered to be disappeared. At this time, the ATG Shi Rao base station stops the interference suppression mechanism and resumes the normal downlink transmission behavior; the disturbed base station of the ground network stops the transmission of the RIM-RS type 1 and the RIM-RS type 3; the victim base station and Shi Raoji stations of the terrestrial network stop listening to RIM-RS type 2.

In addition, when the first communication device does not detect any type of RIM-RS, transmission of any type of RIM-RS including RIM-RS type 1, RIM-RS type 2, and RIM-RS type 3 is stopped.

In this embodiment, on the premise of not changing the configuration of RIM-RS designed for a ground isomorphic network in the related art, a set of RIM-RS signals dedicated for ATG base station interception and detection are additionally configured for the ground network, which is denoted as an ATG-RIM-RS, aiming at the frame structure configuration of the ATG network. By reasonably configuring time domain transmission resources, the ATG-RIM-RS can be ensured to be detected by an ATG base station.

In a second embodiment of the present invention, as shown in fig. 5B, a method for transmitting RIM-RS is applied to a first communication device, and includes:

Step 102: at least one set of RIM-RS is configured for the ground network, and the time domain position of the transmission resource of the RIM-RS in the RIM-RS transmission period changes along with time.

In this embodiment, the transmission resource of the RIM-RS changes with time, so that it can be ensured that at least a part of RIM-RS transmitted in a time interval can be detected by the ATG base station in the RIM-RS periodically transmitted by any ground network base station, thereby solving the problem of remote interference management in a non-quasi-homogeneous network.

The time domain position of the transmission resource of the RIM-RS in the RIM-RS transmission period changes along with time, and the time domain resource indicatesIs determined by at least one of the following:

a start time domain offset, the number of candidate sequences of the current RIM-RS type, the number of continuous up-down conversion periods of the current RIM-RS type and the firstDevice identification set ID and time parameter of a communication device

wherein T is _start In order to initiate the time domain offset,the number of candidate sequences representing the current RIM-RS type, R represents the number of continuous up-down conversion periods of the current RIM-RS type, n _setID A set ID representing the first communication device; />Is a time parameter; />Is a positive integer; f (·), is an arbitrary function.

In one embodiment, the time parameterIs the number of RIM-RS transmission periods (RIM-RS transmission periods) from a particular time instant.

In one embodiment of the present invention, in one embodiment,calculated according to the following formula:

wherein,,represents the total Set ID number of RIM-RS type 1 (the total number of setIDs for RIM-RS type 1), ->Represents the total Set ID number of RIM-RS type 2 (the total number of setIDs for RIM-RS type 2). />

Alternatively, the process may be carried out in a single-stage,

its frequency domain resource indicationIs determined by the following formula:

sequence indication thereofIs determined by the following formula:

wherein,,

optionally, the first communication device is a base station of a terrestrial network and/or an ATG base station.

In an exemplary embodiment, the time domain position of the RIM-RS transmission resource in the RIM-RS transmission period varies with time, including:

determining a resource indication corresponding to the first set ID according to a first formulaWherein,,

wherein,,for time domain resource indication (resource indices in time domain), T _start Is a start time domain offset (starting time offset); / >The number of candidate sequences (the number of sequence candidates for the current RIM-RS resource) representing the current RIM-RS type;wherein R represents the number of continuous uplink and downlink transition periods of the current RIM-RS type (the number of consecutive uplink-downlink switching periods for RIM-RS type i); n is n _setID A set ID representing the first communication device; f (·) is an arbitrary function;

the physical meaning of (2) is: the current RIM-RS type occupies the basic time unit number in the time domain, wherein the basic time unit occupies R continuous up-down conversion period numbers.

Wherein,,calculated according to the following formula:

wherein,,represents the total Set ID number of RIM-RS type 1 (the total number of setIDs for RIM-RS type 1), ->Representing the total Set ID number of RIM-RS type 2 (the total number of setIDs for RIM-RS type 2); />The number of candidate frequency domain resources for the network configuration is represented (the number of candidate frequency resources configured in the network). />

In this embodiment, the RIM-RS transmission resource (a resource for RIM-RS transmission) is variableDefinition, wherein->The resource indications in the time domain parameter list, the frequency domain parameter list, and the sequence parameter list, respectively, corresponding to the OAM configuration.

Optionally, the function f (x, t) has at least one of the following properties:

f (x, t) is a one-to-one mapping function of x;

f(x,t)＝a+((x+t)mod(b-a+1))

In one embodiment of the present invention, in one embodiment,

wherein,,represents the total Set ID number of RIM-RS type 1 (the total number of setIDs for RIM-RS type 1), ->Represents the total Set ID number of RIM-RS type 2 (the total number of setIDs for RIM-RS type 2).

f (·) is an arbitrary function. In one embodiment of the present invention, in one embodiment,

in an alternative embodiment of the present invention,is->Is a one-to-one mapping function of (a). The specific formula for f (·) is not limited herein.

In another exemplary embodiment, the time domain position of the RIM-RS transmission resource in the RIM-RS transmission period varies with time, further comprising:

wherein,,

wherein,,for time domain resource indication (resource indices in time domain), ->Indication (resource indices in frequency domain) for frequency domain resources, -a>For sequence indication (resource indices for sequence), T _start Is a start time domain offset (starting time offset); />Number of candidate frequency domain resources (the number of candidate frequency resources configured in the network) representing network configuration, -a >The number of candidate sequences (the number of sequence candidates for the current RIM-RS resource) representing the current RIM-RS type; />Wherein R represents the number of consecutive up-down conversion cycles of the current RIM-RS type (the number of consecutive uplink-downlink switching periods for RIM-RS type i)；n _setID A set ID representing the first communication device; f (·) is an arbitrary function.

Calculated according to the following formula:

S _start Calculated according to the following formula:

wherein,,the number of candidate sequences of RIM-RS type 1 is indicated (the number of candidate sequences assigned for RIM-RS type 1).

In another exemplary embodiment, the RIM-RS transmission resource (a resource for RIM-RS transmission) is variableDefinition, wherein->Time domain parameter list, frequency domain parameter list, and frequency domain parameter list respectively corresponding to OAM configurationThe resource in the list of sequence parameters indicates.

The embodiment modifies the time domain resource mapping method of the RIM-RS in the related art, so that the time domain position of the RIM-RS in the RIM-RS transmission period (for example, 2 min) changes with time, so as to ensure that at least part of RIM-RS sent in a time interval can be detected by the ATG base station in the RIM-RS sent periodically by any ground network base station. The embodiment can save the cost of transmitting the RIM-RS by the ground network, the ground network normally transmits the RIM-RS, the RIM-RS can be detected by the base stations of other isomorphic ground networks and also can be detected by the ATG base station, and the RIM-RS transmission resource cost can be saved without introducing new RIM-RS configuration, so that the method has good expansibility.

The embodiment of the invention also provides a RIM-RS sending method, which is applied to the second communication equipment, as shown in fig. 9, and comprises the following steps:

step 201: configuring a set of RIM-RS for a ground-to-air network, wherein configuration information of the RIM-RS comprises 1 uplink and downlink conversion period or 2 uplink and downlink conversion periods;

step 202: periodically listening to the RIM-RS transmitted by the first communication device, the second communication device not transmitting any RIM-RS.

Optionally, the method further comprises at least one of:

The embodiment of the invention also provides a transmitting device of the RIM-RS, which is applied to the first communication equipment, as shown in fig. 10, and comprises:

the configuration module 31 is configured to configure at least two sets of RIM-RSs for the ground network, where the configuration information of each RIM-RS includes one or two uplink-downlink conversion periods, and the uplink-downlink conversion periods of the at least two sets of RIM-RSs are configured differently.

Alternatively, the process may be carried out in a single-stage,

a processing module for performing at least one of:

the first communication device does not listen to RIM-RS type 3.

In another embodiment of the present invention, the configuration module 31 is configured to configure a set of RIM-RSs for a terrestrial network, where a time domain position of a transmission resource of the RIM-RS in a RIM-RS transmission period changes with time.

Alternatively, the process may be carried out in a single-stage,

its frequency domain resource indicationIs determined by the following formula:

/>

sequence indication thereofIs determined by the following formula:

wherein,,

optionally, the function f (x, t) has at least one of the following properties:

f (x, t) is a one-to-one mapping function of x;

The embodiment of the invention also provides a transmitting device of the RIM-RS, which is applied to the first communication device, as shown in fig. 11, and comprises a processor 41 and a transceiver 42,

the processor 41 is configured to configure at least two sets of RIM-RSs for a ground network, where configuration information of each RIM-RS includes one or two uplink-downlink conversion periods, and the uplink-downlink conversion periods of the at least two sets of RIM-RSs are configured differently.

Alternatively, the process may be carried out in a single-stage,

the first communication device does not listen to RIM-RS type 3.

In another embodiment of the present invention, the processor 41 is specifically configured to configure a set of RIM-RSs, where the time domain position of the transmission resource of the RIM-RS changes with time within the RIM-RS transmission period.

Alternatively, the process may be carried out in a single-stage,

its frequency domain resource indicationIs determined by the following formula:

sequence indication thereofIs determined by the following formula:

wherein,,

optionally, the function f (x, t) has at least one of the following properties:

f (x, t) is a one-to-one mapping function of x;

The embodiment of the invention also provides a transmitting device of the RIM-RS, which is applied to the second communication equipment, as shown in fig. 12, and comprises:

a configuration module 51, configured to configure a set of RIM-RS for a ground-to-air network, where configuration information of the RIM-RS includes 1 uplink-downlink conversion period or 2 uplink-downlink conversion periods;

interception module 52 is configured to periodically intercept RIM-RSs transmitted by the first communication device, and not transmit any RIM-RSs.

Optionally, the interception module 52 is further configured to perform at least one of:

Optionally, the interception module 52 is configured to perform any one of the following:

The embodiment of the invention also provides a transmitting device of the RIM-RS, which is applied to the second communication device, as shown in fig. 13, and comprises a processor 61 and a transceiver 62,

the processor 61 is configured to configure a set of RIM-RS for a ground-to-air network, where configuration information of the RIM-RS includes 1 uplink-downlink conversion period or 2 uplink-downlink conversion periods;

The transceiver 62 is configured to periodically listen to the RIM-RS transmitted by the first communication device and not transmit any RIM-RS.

Optionally, the transceiver 62 is further configured to perform at least one of:

Optionally, the transceiver 62 is configured to perform any one of:

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the processing units may be implemented within one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (DSP devices, DSPD), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

It will be apparent to those skilled in the art that embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, user terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing user terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing user terminal device, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing user terminal device to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing user terminal device to cause a series of operational steps to be performed on the computer or other programmable user terminal device to produce a computer implemented process such that the instructions which execute on the computer or other programmable user terminal device provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the embodiments of the invention.

It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or user terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or user terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude that an additional identical element is present in a process, method, article or user terminal device comprising the element.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and changes can be made without departing from the principles of the present invention, and such modifications and changes are intended to be within the scope of the present invention.

Claims

1. A method for transmitting RIM-RS, applied to a first communication device, comprising:

configuring at least two sets of RIM-RSs for a ground network, wherein configuration information of each RIM-RS comprises one or two uplink and downlink conversion periods, and the configuration of the uplink and downlink conversion periods of the at least two sets of RIM-RSs is different;

the at least two sets of RIM-RSs include a first RIM-RS type 1 and a third RIM-RS type 3, the method comprising:

the first communication device does not listen to RIM-RS type 3.

2. The RIM-RS transmission method of claim 1, further comprising:

when the first communication device detects that the interference noise IoT rises above a preset threshold, at least RIM-RS type 1 and RIM-RS type 3 are continuously transmitted.

3. The method for transmitting RIM-RSs according to claim 1, wherein the uplink-downlink switching period configurations of the at least two sets of RIM-RSs are different, any one of the following conditions is satisfied,

4. The method for transmitting the RIM-RS according to claim 3, wherein,

5. The method for transmitting RIM-RS according to claim 1, wherein,

The configuration information of each RIM-RS further includes a set of scrambling code IDs including at least 1 scrambling code ID, and elements in the set of scrambling code IDs of different RIM-RS are different.

6. The RIM-RS transmission method of claim 1, wherein the starting time domain offsets of the at least two sets of RIM-RS within a RIM-RS transmission period are different.

7. The RIM-RS transmission method according to any one of claims 1 to 6, wherein the first communication device is a base station of a terrestrial network.

8. A method for transmitting RIM-RS, applied to a first communication device, comprising:

configuring a set of RIM-RS for a ground network, wherein the time domain position of a transmission resource of the RIM-RS in a RIM-RS transmission period changes along with time, and the time domain resource indicatesIs determined by the following formula:

wherein T is _start In order to initiate the time domain offset,the number of candidate sequences representing the current RIM-RS type,r represents the number of continuous up-down conversion periods of the current RIM-RS type, n _setID A set ID representing the first communication device; />Is a time parameter; />Is a positive integer;

and/or, sequence indicationIs determined by the following formula:

Wherein,,the number of candidate sequences representing the current RIM-RS type, and (2)>Representing the number of candidate frequency domain resources of the network configuration, n _setID A set ID representing the first communication device; />For the time parameter->Is a positive integer; s is S _start Is a positive integer;

wherein the function f (x, t) has at least one of the following properties:

f (x, t) is a one-to-one mapping function of x;

9. The RIM-RS transmission method of claim 8, wherein the first communication device is a base station of a terrestrial network.

10. A method for transmitting RIM-RS, applied to a second communication device, comprising:

configuring a RIM-RS type 3 for a ground-to-air network, wherein configuration information of the RIM-RS type 3 comprises 1 uplink and downlink conversion period or 2 uplink and downlink conversion periods;

periodically intercepting RIM-RS type 3 sent by first communication equipment, wherein the second communication equipment does not send any RIM-RS;

wherein the RIM-RS type 3 is functionally different from the RIM-RS type 1 and the RIM-RS type 2.

11. The RIM-RS transmission method of claim 10, further comprising at least one of:

12. The method for transmitting RIM-RSs according to claim 10, wherein the periodically listening for RIM-RSs transmitted by the first communication device includes any one of the following:

a set of RIM-RS sent by first communication equipment is intercepted, and the first communication equipment at least sends two sets of RIM-RS, wherein the uplink and downlink conversion periods of at least two sets of RIM-RS are different;

13. A method of transmitting RIM-RSs according to any of claims 10-12, characterized in that the second communication device is a ground-to-air network base station.

14. A RIM-RS transmitting apparatus for use with a first communication device, comprising:

the configuration module is used for configuring at least two sets of RIM-RSs for a ground network, the configuration information of each RIM-RS comprises one or two uplink and downlink conversion periods, and the uplink and downlink conversion periods of the at least two sets of RIM-RSs are configured differently;

The at least two sets of RIM-RSs include a first RIM-RS type 1 and a third RIM-RS type 3, the apparatus comprising:

a processing module for performing:

stopping transmitting any type of RIM-RS when no type of RIM-RS is detected;

the RIM-RS type 3 is not listened to.

15. A RIM-RS transmitting apparatus for use with a first communication device, comprising:

a configuration module, configured to configure a set of RIM-RS for a ground network, where a time domain position of a transmission resource of the RIM-RS in a RIM-RS transmission period changes with time, and the time domain resource indicatesIs determined by the following formula:

wherein T is _start In order to initiate the time domain offset,candidate sequence representing current RIM-RS typeThe number of columns is such that,r represents the number of continuous up-down conversion periods of the current RIM-RS type, n _setID A set ID representing the first communication device; />Is a time parameter; />Is a positive integer;

and/or, sequence indicationIs determined by the following formula:

wherein,,the number of candidate sequences representing the current RIM-RS type, and (2)>Representing the number of candidate frequency domain resources of the network configuration, n _setID A set ID representing the first communication device; />For the time parameter- >Is a positive integer; s is S _start Is a positive integer;

wherein the function f (x, t) has at least one of the following properties:

f (x, t) is a one-to-one mapping function of x;

16. A RIM-RS transmitting device is applied to a first communication device and is characterized by comprising a processor and a transceiver,

the processor is used for configuring at least two sets of RIM-RSs for a ground network, the configuration information of each RIM-RS comprises one or two uplink and downlink conversion periods, and the uplink and downlink conversion periods of the at least two sets of RIM-RSs are configured differently;

the at least two sets of RIM-RSs include a first RIM-RS type 1 and a third RIM-RS type 3, the processor further configured to perform:

stopping transmitting any type of RIM-RS when no type of RIM-RS is detected;

the RIM-RS type 3 is not listened to.

17. A RIM-RS transmitting device is applied to a first communication device and is characterized by comprising a processor and a transceiver,

a processor for configuring a set of RIM-RS for a ground network, wherein the time domain position of the transmission resource of the RIM-RS in the RIM-RS transmission period changes along with time, and the time domain resource indicatesIs determined by the following formula:

and/or, sequence indicationIs determined by the following formula:

wherein,,the number of candidate sequences representing the current RIM-RS type, and (2)>Representing the number of candidate frequency domain resources of the network configuration, n _setID A set ID representing the first communication device; />For the time parameter->Is a positive integer; s is(s) _start Is a positive integer;

wherein the function f (x, t) has at least one of the following properties:

f (x, t) is a one-to-one mapping function of x;

18. A RIM-RS transmitting apparatus for use in a second communication device, comprising:

the configuration module is used for configuring the RIM-RS type 3 for the ground-to-air network, wherein the configuration information of the RIM-RS type 3 comprises 1 uplink and downlink conversion period or 2 uplink and downlink conversion periods;

the interception module is used for periodically intercepting RIM-RS type 3 sent by the first communication equipment and not sending any RIM-RSS;

19. A RIM-RS transmitting device is applied to a second communication device and is characterized by comprising a processor and a transceiver,

the processor is used for configuring a RIM-RS type 3 for a ground-to-air network, and configuration information of the RIM-RS type 3 comprises 1 uplink and downlink conversion period or 2 uplink and downlink conversion periods;

the transceiver is used for periodically intercepting RIM-RS type 3 sent by the first communication equipment and not sending any RIM-RSS;

20. A communication device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps in the RIM-RS transmission method as claimed in any one of claims 1 to 13.

21. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps in the RIM-RS transmission method according to any one of claims 1 to 13.