CN112671519A - Method and device for determining reference signal interception opportunity - Google Patents
Method and device for determining reference signal interception opportunity Download PDFInfo
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Abstract
The invention provides a method and a device for determining a reference signal interception opportunity, and belongs to the technical field of wireless communication. A method of determining a reference signal listening opportunity, comprising: determining candidate interception occasions of the reference signal; and in the transmission period of the reference signal, monitoring the reference signal in the candidate monitoring opportunity with the starting time smaller than a preset value. The technical scheme of the invention can reduce the complexity of intercepting the reference signal.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for determining a reference signal listening timing.
Background
In inland areas where spring, summer and autumn meet, or coastal areas in winter, an atmospheric waveguide (Surface reduction) phenomenon is likely to occur.
When the atmospheric waveguide phenomenon occurs, a level with inverse temperature or water vapor sharply reduced along with the height exists in the troposphere, the troposphere is called a waveguide layer, and most radio wave radiation is limited in the waveguide layer to carry out super-refraction propagation. Beyond-the-horizon propagation allows radio signals to travel great distances and suffer from low path propagation losses.
For a Time Division Duplex (TDD) system (e.g., a 4G Long Term Evolution (LTE) system or a 5G New Radio (NR) system), when an atmospheric waveguide phenomenon occurs, a Downlink (DL) signal of a remote base station will cause strong interference to uplink (Up Link, UL) data reception of a local base station. Due to the existence of the atmospheric waveguide layer, after a DL signal transmitted by a far-end Interference station (Interference site, or Interference site) is propagated through an ultra-long distance (for example, tens of kilometers or hundreds of kilometers) space, the DL signal still has high energy, and the DL signal falls into a UL signal receiving window of a local Interference station (visual site, or Interference site), so that the DL signal causes strong Interference to UL data reception of the local base station.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method and a device for determining a reference signal listening opportunity, which can reduce access time delay and reduce terminal power consumption.
To solve the above technical problem, embodiments of the present invention provide the following technical solutions:
the embodiment of the invention provides a method for determining a reference signal listening opportunity, which comprises the following steps:
determining candidate interception occasions of the reference signal;
and in the transmission period of the reference signal, monitoring the reference signal in the candidate monitoring opportunity with the starting time smaller than a preset value.
Optionally, the first ratio Pt/R1Is a positive integer, wherein PtThe number of uplink and downlink switching periods, R, included in the transmission period of the reference signal1The number of times of repeated transmission of the reference signal.
Optionally, the first ratio Pt/R1And the second ratio M is relatively prime, M is the ratio of a first time interval to a first time unit, the first time interval is the interval between adjacent candidate listening opportunities, and the first time unit is the transmission interval of the adjacent reference signals multiplied by the repeated transmission times of the reference signals.
Optionally, the transmission interval of the reference signal is equal to the duration of an uplink and downlink switching period.
Optionally, each of the candidate listening occasions includes all uplink symbols in a first time unit.
An embodiment of the present invention provides an apparatus for determining a reference signal listening opportunity, including:
a determining module, configured to determine candidate listening occasions of the reference signal;
and the interception module is used for intercepting the reference signal in the candidate interception opportunity with the starting time smaller than the preset value in the transmission period of the reference signal.
Optionally, the first ratio Pt/R1Is a positive integer, wherein PtThe number of uplink and downlink switching periods, R, included in the transmission period of the reference signal1The number of times of repeated transmission of the reference signal.
Optionally, the first ratio Pt/R1And the second ratio M is relatively prime, M is the ratio of a first time interval to a first time unit, the first time interval is the interval between adjacent candidate listening opportunities, and the first time unit is the transmission interval of the adjacent reference signals multiplied by the repeated transmission times of the reference signals.
Optionally, the transmission interval of the reference signal is equal to the duration of an uplink and downlink switching period.
Optionally, each of the candidate listening occasions includes all uplink symbols in a first time unit.
An embodiment of the present invention provides an apparatus for determining a reference signal listening opportunity, comprising a processor and a transceiver,
the processor is configured to determine candidate listening occasions for a reference signal; and in the transmission period of the reference signal, monitoring the reference signal in the candidate monitoring opportunity with the starting time smaller than a preset value.
Optionally, the first ratio Pt/R1Is a positive integer, wherein PtThe number of uplink and downlink switching periods, R, included in the transmission period of the reference signal1The number of times of repeated transmission of the reference signal.
Optionally, the first ratio Pt/R1And the second ratio M is relatively prime, M is the ratio of a first time interval to a first time unit, the first time interval is the interval between adjacent candidate listening opportunities, and the first time unit is the transmission interval of the adjacent reference signals multiplied by the repeated transmission times of the reference signals.
Optionally, the transmission interval of the reference signal is equal to the duration of an uplink and downlink switching period.
Optionally, each of the candidate listening occasions includes all uplink symbols in a first time unit.
An embodiment of the present invention provides a communication apparatus, including: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the method of determining reference signal listening occasions as described above.
An embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program, which when executed by a processor implements the steps in the method of determining a reference signal listening opportunity as described above.
The embodiment of the invention has the following beneficial effects:
in the above scheme, candidate listening occasions of the reference signal are determined, and the reference signal is listened in the candidate listening occasions of which the starting time is smaller than a preset value in the transmission period of the reference signal. The embodiment does not need to execute the splicing operation of the interception window, is simple to realize, and can reduce the complexity of intercepting the reference signal.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic flow chart of remote interference management work;
fig. 2 is a schematic diagram of OAM configuring an interception occasion;
FIG. 3 is a diagram of the time domain distribution of RS in NR-RIM.
FIG. 4 is a schematic diagram of a stitching scheme;
fig. 5 is a flowchart illustrating a method for determining a reference signal listening timing according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating a duration of continuous listening according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of candidate listening opportunities in accordance with an embodiment of the present invention;
fig. 8 is a block diagram of an apparatus for determining a reference signal listening timing according to an embodiment of the present invention;
fig. 9 is a schematic diagram illustrating a configuration of an apparatus for determining a listening timing of a reference signal 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 clearer, the following detailed description will be given with reference to the accompanying drawings and 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 invention are shown in the drawings, it should be understood that the invention can 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 of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.
The techniques described herein are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the 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-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes the 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 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. In addition, features described with reference to certain examples may be combined in other examples.
In the existing TD-LTE network, the fact that due to the atmospheric waveguide phenomenon, TD-LTE is disturbed in a large-area uplink mode, the uplink IOT lifting can reach 25dB, and Key Performance Indicators (KPI) such as Radio Resource Control (RRC) connection establishment success rate are seriously deteriorated. The interfered cell mainly takes a rural F frequency band, the interference time is mainly concentrated on 0:00-8:00, and the number of affected base stations is hundreds to tens of thousands.
In order to solve the above problem, the 5G NR proposes a remote interference management technique, and a basic flow is shown in fig. 1, and includes:
step 0: atmospheric waveguide phenomenon (Atmospheric induced phenomenon) occurs, generating remote interference (remote interference);
step 1: 1A, a Victim station (Victim) experiences an IoT lifting phenomenon in a shape of a 'ramp wave', and starts to send a Reference Signal (RS) -1 and listens to an RS-2; 1B: an interference station (Aggressor) continuously monitors the RS-1;
step 2: if the interference applying station detects RS-1, it will execute interference suppression operation (such as the following symbol back-off) and send RS-2;
and step 3: the interfered station continuously transmits the RS-1 until the RS-2 disappears;
and 4, step 4: the interfering station continues to perform interference suppression operations and transmits RS-2 until RS-1 disappears.
In the scheme, the RS-1 is sent by a disturbed station and is used for indicating that the base station is interfered by a far end; and the RS-2 is sent by the disturbing station and is used for assisting in judging whether the atmospheric waveguide phenomenon still exists. The RS-1 Transmission is used for sending RS-1, the Remote Interference is used for Remote Interference, the RS-2 Transmission is used for sending RS-2, the Start RS monitoring is used for starting RS monitoring, the Stop RS-1 Transmission is used for stopping sending RS-1, the RS monitoring is used for RS monitoring, the application Remote Interference Mitigation schemes are used for applying a Remote Interference Mitigation scheme, and the storage field information Stop RS monitoring is used for restoring original configuration and stopping monitoring RS.
In an actual network environment, a base station may be both an offender station and a victim station, and therefore, the base station may perform the above two actions simultaneously.
It should be noted that in step 1B, the offender station needs to listen continuously to RS-1. In order to detect the RS, the base station needs to perform blind detection on the RS in all uplink symbols, and perform Fast Fourier Transform (FFT) or Inverse Fast Fourier Transform (IFFT) operation on each uplink symbol, so the RS detection algorithm is complex.
In order to reduce the algorithm complexity required by the perturbation station for continuously intercepting the RS-1 in the step 1B, the related technology provides an RS-1 interception opportunity determination method based on the combination of Operation Administration and Maintenance (OAM) configuration and event trigger. As shown in fig. 2, OAM configures a set of basic RS-1 listening occasions distributed relatively sparsely in the time domain for the interfering station, and the interfering station periodically listens to RS-1 according to OAM configuration. If the interference station finds IoT uplift, the interference station triggers additional RS-1 monitoring time distributed relatively densely on a time domain, and simultaneously monitors RS-1 in the basic and additional RS-1 monitoring time. The TDD DL/UL patterns are time division duplex downlink/uplink patterns, and RIM (Remote Interference management) -RS period is a Remote Interference management reference signal period.
Aiming at the RS-1 interception opportunity configured by OAM, in order to timely discover the RS-1 signal sent by at least one arbitrary base station, a preferred scheme is as follows: the receiving base station monitors every M time units by taking the RS-1 sending time length as a time unit, and ensures M and PtCoprime, wherein PtFor the transmission period of RS-1 signals, PtAnd M in the same time unit.
The principle of the scheme is as follows: consider having PtDifferent base stations transmit RS-1, and each base station transmit position x is different (i.e., x ∈ {0,1, …, P)t-1}), then when the receiving base station listens once every M time units, at M · PtWithin a time unit, the receiving base station can hear P togethertRS-1, and the sensed base station position is numbered as
Where b is the initial listening position offset. It can be proved mathematically that when M and P aretWhen relatively prime, gather
And set {0,1, …, Pt-1 is exactly equal. This means that in M.PtWithin a time unit, the receiving base station can hear P togethertAnd each RS-1 can hear the RS-1 transmitted by each transmitting base station only once.
As shown in fig. 2, M is 5, P t8, M and PtAre relatively prime. And the base stationIn M.PtIn each time unit, RS-1 transmitted by {0,5,2,7,4,1,6,3} th base stations is sensed, and the set of {0,5,2,7,4,1,6,3} is equal to {0,1,2,3,4,5,6,7 }.
The scheme has the advantages that when the atmospheric waveguide phenomenon occurs, a large number of base stations can send RS-1 signals, at the moment, the monitoring base station can determine the atmospheric waveguide phenomenon as long as the monitoring base station monitors the RS-1 sent by one base station, and then the interference suppression operation is executed in time.
As shown in fig. 3, in the RIM-RS transmission period PtAnd the time interval comprises three time intervals of RS-1, RS-2 and unused (unused). Wherein, in the RS-1 time interval, each base station transmits RS-1 in R continuous time units. Wherein, the PtAnd the time unit of R is called an uplink-downlink switching period.
To adapt the idea of fig. 2, different transmission periods P may be combinedtThe RS-1 time intervals in (A) are spliced together to form a new listening window (Monitoring window). The base station monitors RS-1 in a Monitoring window by taking M continuous detection durations (continuous detection durations) as a period, and each time, the continuous detection duration comprises R uplink-downlink switching durations. Note that the transmission period PtIn RS-1 time interval of (1) including N in totalTA continuous detection duration. Wherein N isTAnd M is coprime.
Fig. 4 is a schematic diagram of the splicing scheme employed. In fig. 4, M is 5, N T8, M and NTAre relatively prime. Each cell is a coherent detection duration, which includes R uplink-downlink switching periods.
As shown in FIG. 4, in the Monitoring window obtained by the "splicing" operation, the BS continuously listens to RS-1 for M consecutive detection periods. However, in the original transmission period PtThe intervals between adjacent listening occasions are not equal.
When two adjacent listening occasions do not cross the transmission period PtAt intervals of M cAn ongoing detection duration; however, when two adjacent listening occasions span the transmission period PtWhen this occurs, the interval becomes M.R1+(Pt-NT·R1) An uplink-downlink switching period. Wherein, Pt-NT·R1The uplink-downlink switching period represents the sum of time domain resources occupied by the RS-2 part and the unused part.
The above processing brings certain understanding and operation complexity to the engineering implementation.
In order to solve the above problem, embodiments of the present invention provide a method and an apparatus for determining a reference signal listening timing, which can reduce the complexity of listening to RS-1.
An embodiment of the present invention provides a method for determining a reference signal listening opportunity, which is applied to a terminal, and as shown in fig. 5, the method includes:
step 101: determining candidate interception occasions of the reference signal;
step 102: and in the transmission period of the reference signal, monitoring the reference signal in the candidate monitoring opportunity with the starting time smaller than a preset value.
In this embodiment, candidate listening occasions of the reference signal are determined, and the reference signal is listened in the candidate listening occasions of which the starting time is smaller than a preset value in the transmission period of the reference signal. The embodiment does not need to execute the splicing operation of the interception window, is simple to realize, and can reduce the complexity of intercepting the reference signal.
As shown in FIG. 6, each cell child table has a consecutive detection duration, including R1An uplink-downlink switching period, wherein R is1Representing the number of repeated transmissions of RS-1, or the number of consecutive uplink-downlink switching periods occupied for transmitting RS-1 (the number of consecutive uplink-downlink switching periods for RS-1).
In this embodiment, the first time unit is equal to the number of repeated transmissions of the reference signal multiplied by the transmission interval of the adjacent reference signal. Wherein R is1Representing the number of repeated transmissions of RS-1, or so-called continuations occupied for transmitting RS-1The number of uplink-downlink switching periods (the number of consecutive uplink-downlink switching periods for RS-1). Since only one of the reference signals is transmitted in each uplink-downlink switching period, the transmission interval of the adjacent reference signals is equal to the uplink-downlink switching period. Thus, the first time unit can be denoted as R1The uplink-downlink switching period is used as a unit. In this embodiment, the transmission period P of the reference signaltThe ratio to the first time unit is a positive integer, which is actually the requirement Pt/R1Is a positive integer.
In this embodiment, a value of M may be 3, where M represents an interval between adjacent candidate listening occasions expressed in a continuous detection duration time unit, or M may be referred to as a second ratio and is equal to a ratio of the first time interval to a first time unit, where the first time interval is a time interval between adjacent candidate listening occasions, and the first time unit represents a duration of the continuous detection duration, where the first time interval and the first time unit may adopt any same time unit.
In this example, Pt/R1Is coprime with M, Pt/R1The physical meaning of (a) is the number of coherent detection duration included in the transmission period of the reference signal, and the physical meaning of (M) is the number of coherent detection duration included between adjacent candidate listening occasions.
In the upper diagram of FIG. 6, N T4; while in the lower diagram of FIG. 6, NT＝6。 NTAt the above predetermined value, NTThe physical meaning of (1) is the RS-1 time zone in fig. 3, i.e. the base station only needs to listen to RS-1 for the first period of the reference signal transmission period.
In this embodiment, the preset value and the start time of the reference signal transmission period related thereto may adopt any time unit. In the embodiment of FIG. 6, NTThe time unit of (1) is a permanent detection duration.
In the upper diagram of FIG. 6, NT＝4，Pt/R1And when M is equal to 3, the base station determines the candidate listening timing at an interval of M being equal to 3.
It is assumed that RS-2 and unused time intervals are not considered, i.e. that at most P is presentt/R1When 8 base stations transmit RS-1 in each coherent detection duration, the base stations will hear the first one respectively
RS-1 transmitted by each base station.
Considering the RS-2 and unused time interval effects, NTThe subsequent coherent detection duration of 4 is occupied by RS-2 and unused resources, and RS-1 cannot be transmitted. Therefore, the base station only needs to be at
Total NTRS-1 is listened for on 4 time domain resources. It can be seen that the set {1,4,2,3} is exactly equal to the base station number {1,2,3,4} that is actually capable of transmitting RS-1.
Similarly, in the lower diagram of FIG. 6, NT＝6，Pt/R1When M is 3, the base station only needs to be in 8
Total NTRS-1 is listened for on 6 time domain resources. It can be seen that the set {1,4,2,5,3,6} is exactly equal to the base station number {1,2,3,4,5,6} that is actually able to transmit RS-1.
In the embodiment, the operation of splicing the listening windows is not required to be executed, and the implementation is simpler.
In this embodiment, the first ratio Pt/R1And a second ratio M is relatively prime due to Pt/R1>NTTherefore, the selection range of M in this embodiment is substantially larger, and there may be greater flexibility in parameter selection.
As shown in fig. 7, only one reference signal is transmitted in each uplink-downlink switching period, so that the transmission interval of the reference signal is exactly equal to the duration of the uplink-downlink switching period.
In this embodiment, each of the candidate listening occasions includes all uplink symbols in a first time unit.
As shown in fig. 7, each first time unit corresponds to a coherent detection duration, and each coherent detection duration includes R1And the base station monitors the reference signal RS-1 in the UL symbol in each uplink-downlink switching period.
An embodiment of the present invention provides an apparatus for determining a reference signal listening opportunity, as shown in fig. 8, including:
a determining module 21, configured to determine candidate listening occasions of the reference signal;
and the interception module 22 is configured to intercept the reference signal in a candidate interception occasion with a start time smaller than a preset value in the transmission period of the reference signal.
In this embodiment, candidate listening occasions of the reference signal are determined, and the reference signal is listened in the candidate listening occasions of which the starting time is smaller than a preset value in the transmission period of the reference signal. The embodiment does not need to execute the splicing operation of the interception window, is simple to realize, and can reduce the complexity of intercepting the reference signal.
Optionally, the first ratio Pt/R1Is a positive integer, wherein PtThe number of uplink and downlink switching periods, R, included in the transmission period of the reference signal1The number of times of repeated transmission of the reference signal.
Optionally, the first ratio Pt/R1And the second ratio M is relatively prime, M is the ratio of a first time interval to a first time unit, the first time interval is the interval between adjacent candidate listening opportunities, and the first time unit is the transmission interval of the adjacent reference signals multiplied by the repeated transmission times of the reference signals.
Optionally, the transmission interval of the reference signal is equal to the duration of an uplink and downlink switching period.
Optionally, each of the candidate listening occasions includes all uplink symbols in a first time unit.
An embodiment of the present invention provides an apparatus for determining a reference signal listening opportunity, as shown in fig. 9, including a processor 31 and a transceiver 32,
the processor 31 is configured to determine candidate listening occasions of the reference signal; and in the transmission period of the reference signal, monitoring the reference signal in the candidate monitoring opportunity with the starting time smaller than a preset value.
In this embodiment, candidate listening occasions of the reference signal are determined, and the reference signal is listened in the candidate listening occasions of which the starting time is smaller than a preset value in the transmission period of the reference signal. The embodiment does not need to execute the splicing operation of the interception window, is simple to realize, and can reduce the complexity of intercepting the reference signal.
Optionally, the first ratio Pt/R1Is a positive integer, wherein PtThe number of uplink and downlink switching periods, R, included in the transmission period of the reference signal1The number of times of repeated transmission of the reference signal.
Optionally, the first ratio Pt/R1And the second ratio M is relatively prime, M is the ratio of a first time interval to a first time unit, the first time interval is the interval between adjacent candidate listening opportunities, and the first time unit is the transmission interval of the adjacent reference signals multiplied by the repeated transmission times of the reference signals.
Optionally, the transmission interval of the reference signal is equal to the duration of an uplink and downlink switching period.
Optionally, each of the candidate listening occasions includes all uplink symbols in a first time unit.
An embodiment of the present invention provides a communication apparatus, including: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the method of determining reference signal listening occasions as described above.
An embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program, which when executed by a processor implements the steps in the method of determining a reference signal listening opportunity as described above.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, 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.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, 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 present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 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 of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
It is further noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 an … …" does not exclude the presence of other like elements in a process, method, article, or user terminal device that comprises the element.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (9)
1. A method for determining a reference signal listening opportunity, comprising:
determining candidate interception occasions of the reference signal;
and in the transmission period of the reference signal, monitoring the reference signal in the candidate monitoring opportunity with the starting time smaller than a preset value.
2. The method of claim 1, wherein the first ratio P ist/R1Is a positive integer, wherein PtThe number of uplink and downlink switching periods, R, included in the transmission period of the reference signal1The number of times of repeated transmission of the reference signal.
3. The method of claim 2, wherein the first ratio P ist/R1Is relatively prime to a second ratio M, M being the ratio of a first time interval to a first time unit, the first time interval being the interval between adjacent candidate listening occasions, the first time unit being the referenceThe number of times of repeated transmission of the signal is multiplied by the transmission interval of the adjacent reference signals.
4. The method of claim 3, wherein the transmission interval of the reference signal is equal to the duration of an uplink and downlink switching period.
5. The method of determining reference signal listening opportunities of claim 3 wherein each of said candidate listening opportunities comprises all uplink symbols in a first time unit.
6. An apparatus for determining a reference signal listening opportunity, comprising:
a determining module, configured to determine candidate listening occasions of the reference signal;
and the interception module is used for intercepting the reference signal in the candidate interception opportunity with the starting time smaller than the preset value in the transmission period of the reference signal.
7. An apparatus for determining a reference signal listening opportunity, comprising a processor and a transceiver,
the processor is configured to determine candidate listening occasions for a reference signal; and in the transmission period of the reference signal, monitoring the reference signal in the candidate monitoring opportunity with the starting time smaller than a preset value.
8. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the method of determining reference signal listening occasions according to any of claims 1 to 5.
9. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of determining reference signal listening occasions according to any one of claims 1 to 5.
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