CN113965940A - Method, system, equipment and medium for measuring downlink path loss - Google Patents

Method, system, equipment and medium for measuring downlink path loss Download PDF

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Publication number
CN113965940A
CN113965940A CN202010695967.1A CN202010695967A CN113965940A CN 113965940 A CN113965940 A CN 113965940A CN 202010695967 A CN202010695967 A CN 202010695967A CN 113965940 A CN113965940 A CN 113965940A
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China
Prior art keywords
path loss
downlink path
ssb
reference signal
service
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Pending
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CN202010695967.1A
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Chinese (zh)
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刘勇
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ZTE Corp
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ZTE Corp
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Priority to CN202010695967.1A priority Critical patent/CN113965940A/en
Priority to PCT/CN2021/106294 priority patent/WO2022017239A1/en
Publication of CN113965940A publication Critical patent/CN113965940A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention discloses a method, a system, equipment and a medium for measuring downlink path loss, which relate to the technical field of communication and solve the technical problem that the downlink path loss measurement is not accurate enough. Meanwhile, uplink power control optimization can ensure that downlink feedback can be correctly demodulated by a base station, downlink packet error times are reduced, and UE downlink flow is improved; the uplink transmitting power is calculated more accurately, and the purpose of saving electricity of the UE can be achieved.

Description

Method, system, equipment and medium for measuring downlink path loss
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method, a system, a device, and a medium for measuring downlink path loss.
Background
Uplink power control (hereinafter referred to as "uplink power control") refers to a technique of adjusting the transmission power of an uplink channel of a UE (user equipment), transmitting with minimum power under the condition of ensuring the receiving performance of a base station, and minimizing interference to the base station to meet the capacity and coverage requirements. In the NR protocol 3GPP TS 38.123: "NR; physical layer procedures for common ", a calculation formula of the uplink channel transmission power is defined. The downlink path loss is an important parameter for calculating uplink transmission power, and the downlink path loss is energy loss of a signal sent to the UE by the base station in a propagation process. The 3GPP protocol specifies that the UE calculates the downlink path loss used by the uplink Power control by measuring the RSRP (Reference Signal Receiving Power) of the Reference Signal configured at the higher layer, but in the existing method for measuring the downlink path loss, the UE cannot adaptively select an appropriate Reference Signal to measure the downlink path loss, which causes the phenomenon that the measurement of a specific beam is inaccurate in some scenes, and the transmission Power of the terminal also does not meet the Signal quality.
Disclosure of Invention
The present disclosure provides a method, a system, a device and a medium for measuring downlink path loss, which are technically aimed at enabling a UE to adaptively select a service beam to measure downlink path loss, so that the measurement of downlink path loss is more accurate, and the transmission power of a terminal is more in line with channel quality.
The technical purpose of the present disclosure is achieved by the following technical solutions:
a method for measuring downlink path loss comprises the following steps:
configuring at least one set of narrow beam SSB service beams;
the UE receives an instruction to acquire a first SSB service beam and calculates downlink path loss by using the first SSB service beam.
Further, comprising:
configuring a reference signal;
UE reports the reference signal received power measured based on the SSB service beamRSRP，
The UE identifies the scenario and selects a corresponding service beam for calculating the downlink path loss.
Further, when the reference signal is a narrow beam, if the UE receives an indication and acquires a first SSB service beam, the first SSB service beam is used to calculate a downlink path loss; and if the UE does not receive the indication, calculating the downlink path loss by using the service beam carried by the MIB.
Further, when the reference signal is a wide beam, if the UE receives an indication and acquires the first SSB service beam, calculating a downlink path loss using the first SSB service beam; and if the UE does not receive the indication, the reference signal is used for calculating the downlink path loss.
A system for measuring downlink path loss, comprising:
an RRC module comprising a first configuration unit, wherein the first configuration unit configures at least one set of SSB service beams;
the UE comprises a receiving unit and a calculating unit, wherein the receiving unit receives an instruction to acquire a first SSB service beam, and the calculating unit calculates downlink path loss by using the first SSB service beam.
Further, the RRC module further includes a second configuration unit, where the second configuration unit configures a reference signal;
the UE also comprises a sending unit and a selecting unit, wherein the sending unit reports the reference signal receiving power measured based on the SSB service beam, and the selecting unit identifies a scene and selects a corresponding service beam for calculating downlink path loss.
Further, the second configuration unit includes:
a narrow beam configuration unit configured to configure a narrow beam reference signal;
a wide beam configuration unit that configures a wide beam reference signal.
Further, the selection unit includes:
a first selection unit, configured to select a first SSB service beam when the UE receives an instruction and acquires the first SSB service beam;
a second selecting unit, configured to select a service beam carried by the MIB when the reference signal is a narrow beam and the UE does not receive the indication;
a third selecting unit, configured to select the reference signal when the reference signal is a wide beam and the UE does not receive an instruction.
A computer device comprising a memory, a processor and a computer program stored on said memory and executable on said processor, said processor implementing a method of measuring downlink path loss as claimed in any one of the preceding claims when executing said program.
A computer medium having a computer program stored thereon, which, when being executed by a processor, carries out the method of measuring downlink path loss according to any one of the preceding claims.
The beneficial effect of this disclosure lies in: according to the method, the system, the equipment and the medium for measuring the downlink path loss, under certain specific scenes, the UE can adaptively select (1) to measure the downlink path loss by using a reference signal configured by an RRC module; (2) measuring downlink path loss by using a service beam carried by the MIB; (3) the downlink path loss is measured using the optimal SSB service beam, i.e., the first SSB service beam. The uplink transmitting power is calculated through the downlink path loss, so that the accuracy of uplink transmitting power calculation is improved, a base station can correctly allocate Resource Blocks (RB), the RB-level transmitting power is improved, the demodulation accuracy is improved, and the UE uplink flow is improved.
Meanwhile, uplink power control optimization can ensure that downlink feedback can be correctly demodulated by a base station, downlink packet error times are reduced, and UE downlink flow is improved; the uplink transmitting power is calculated more accurately, and the purpose of saving electricity of the UE can be achieved; the interference to other UE in the cell is reduced, and the overall flow of the cell can be improved; the interference to the adjacent area is reduced, and the flow of the users at the edge of the adjacent area is improved.
Drawings
FIG. 1 is a flow chart of the disclosed method;
FIG. 2 is a schematic view of the disclosed system;
FIG. 3 is a flow chart of an embodiment;
FIG. 4 is a flowchart of an embodiment;
FIG. 5 is an embodiment flowchart.
Detailed Description
The technical scheme of the disclosure will be described in detail with reference to the accompanying drawings. In the description of the present disclosure, it is to be understood that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated, but merely as distinguishing between different components. In addition, the "first SSB service beam" is a service beam selected by the UE after receiving the instruction from the base station, and the performance of the service beam is better than that of other service beams.
Fig. 1 is a flowchart of the method of the present disclosure, and as shown in fig. 1, at least one set of narrow beam SSB service beams is configured first, and then the UE receives an instruction to acquire a first SSB service beam and calculates downlink path loss using the first SSB service beam.
Generally, the set of narrow beam SSB service beams includes at least one SSB service beam, and the first SSB service beam is the best SSB service beam among all SSB service beams.
In addition, if the RRC module does not configure a reference Signal used for uplink power control to measure downlink path loss, the SSB (Synchronization Signal and PBCH Block) service beam configured in the MIB (Master Information Block) is used. After configuring multiple sets of SSB (Synchronization Signal Block) service beams of narrow beams based on an RRC (Radio Resource Control) module, the UE measures RSRP of all beams and reports the RSRP to the base station, and the base station indicates the optimal SSB service beam of the UE through a Mac ce (media access layer Control) data packet.
Fig. 3 is a flowchart of an embodiment of the disclosure, which configures a Reference Signal and at least one set of SSB service beams, and a UE reports Reference Signal Received Power (RSRP) measured based on the configured SSB service beams, and then the UE identifies a scene and selects a corresponding service beam for calculating downlink path loss.
Generally, the reference signal is a reference signal used for uplink power control to measure downlink path loss.
Fig. 4 is a flowchart of an embodiment of the present disclosure, when a configured reference signal is a narrow beam, to see whether a UE receives an indication, and if the UE receives the indication, obtain a first SSB service beam and calculate a downlink path loss using the first SSB service beam, and if the UE does not receive the indication, calculate the downlink path loss using a service beam carried by an MIB.
Due to the fact that the coverage range of the narrow beam is small, if the UE is located outside the main lobe of the beam, calculation of uplink power is large, the uplink power can continuously rise under the influence of the power control function, bottom noise is further improved, the uplink flow of the UE is affected by the uplink power, interference on other UE is increased, and the overall flow of a cell is reduced. After the UE receives the first SSB service wave beam which is indicated to be switched to the optimal by the base station, the UE can measure the correct channel quality, the UE flow and the cell flow are both lifted, and the purpose of saving electricity of the UE can be achieved.
And when the UE does not receive the indication of the base station, the UE is switched into the service beam carried by the MIB, and the service beam carried by the MIB is a wide beam and can be covered by a whole cell.
Fig. 5 is a flowchart of a third embodiment of the present disclosure, which is to see whether the UE receives an indication when the configured reference signal is a wide beam, obtain a first SSB service beam and calculate a downlink path loss using the first SSB service beam if the UE receives the indication, and directly calculate the downlink path loss using the reference signal if the UE does not receive the indication.
Due to the fact that the coverage range of the wide beam is small, for cell edge users, signals are weak, interference is strong, and path loss measurement is inaccurate, after the UE receives the first SSB service beam which is indicated by the base station and switched to be the optimal one, downlink signals have forming gain, the UE can measure accurate downlink path loss, and UE flow and cell level flow are lifted.
Fig. 2 is a schematic diagram of the system of the present disclosure, and as shown in fig. 2, the system for measuring downlink path loss includes an RRC module and a UE, where the RRC module includes a first configuration unit and a second configuration unit, the UE includes a receiving unit, a calculating unit, a sending unit and a selecting unit, and the selecting unit includes a first selecting unit, a second selecting unit and a third selecting unit. The receiving unit of the UE is configured to receive an instruction from the base station, and the selecting unit selects a signal for calculating downlink path loss according to the instruction received by the receiving unit. The RRC module configures a wide beam or a narrow beam, the base station transmits downlink reference signals periodically by the narrow beam through a beam forming technology, and the UE detects the downlink reference signals at corresponding moments to obtain RSRP. The functions of the modules of the system refer to the method and the embodiment, and are not described again.
The foregoing is an exemplary embodiment of the present disclosure, and the scope of the present disclosure is defined by the claims and their equivalents.

Claims (10)

1. A method for measuring downlink path loss is characterized by comprising the following steps:
configuring at least one set of narrow beam SSB service beams;
the UE receives an instruction to acquire a first SSB service beam and calculates downlink path loss by using the first SSB service beam.
2. The method of measuring downlink path loss according to claim 1, comprising:
configuring a reference signal;
the UE reports the Reference Signal Received Power (RSRP) measured based on the SSB service beam,
the UE identifies the scenario and selects a corresponding service beam for calculating the downlink path loss.
3. The method according to claim 2, wherein when the reference signal is a narrow beam, if the UE receives an indication and acquires a first SSB service beam, the downlink path loss is calculated using the first SSB service beam; and if the UE does not receive the indication, calculating the downlink path loss by using the service beam carried by the MIB.
4. The method according to claim 2, wherein when the reference signal is a wide beam, if the UE receives an indication and acquires the first SSB service beam, the UE calculates the downlink path loss using the first SSB service beam; and if the UE does not receive the indication, the reference signal is used for calculating the downlink path loss.
5. A system for measuring downlink path loss, comprising:
an RRC module comprising a first configuration unit, wherein the first configuration unit configures at least one set of SSB service beams;
the UE comprises a receiving unit and a calculating unit, wherein the receiving unit receives an instruction to acquire a first SSB service beam, and the calculating unit calculates downlink path loss by using the first SSB service beam.
6. The system for measuring downlink path loss according to claim 5, wherein the RRC module further includes a second configuration unit, and the second configuration unit configures a reference signal;
the UE also comprises a sending unit and a selecting unit, wherein the sending unit reports the reference signal receiving power measured based on the SSB service beam, and the selecting unit identifies a scene and selects a corresponding service beam for calculating downlink path loss.
7. The system for measuring downlink path loss according to claim 6, wherein the second configuration unit comprises:
a narrow beam configuration unit configured to configure a narrow beam reference signal;
a wide beam configuration unit that configures a wide beam reference signal.
8. The system for measuring downlink path loss according to claim 6, wherein said selection unit comprises:
a first selection unit, configured to select a first SSB service beam when the UE receives an instruction and acquires the first SSB service beam;
a second selecting unit, configured to select a service beam carried by the MIB when the reference signal is a narrow beam and the UE does not receive the indication;
a third selecting unit, configured to select the reference signal when the reference signal is a wide beam and the UE does not receive an instruction.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of measuring downlink path loss according to any of claims 1-4 when executing the program.
10. A computer medium, characterized in that the computer medium has stored thereon a computer program which, when being executed by a processor, carries out the method of measuring downlink path loss according to any one of claims 1-4.
CN202010695967.1A 2020-07-20 2020-07-20 Method, system, equipment and medium for measuring downlink path loss Pending CN113965940A (en)

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CN202010695967.1A CN113965940A (en) 2020-07-20 2020-07-20 Method, system, equipment and medium for measuring downlink path loss
PCT/CN2021/106294 WO2022017239A1 (en) 2020-07-20 2021-07-14 Method and system for measuring downlink path loss, and device and medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010695967.1A CN113965940A (en) 2020-07-20 2020-07-20 Method, system, equipment and medium for measuring downlink path loss

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CN110574483B (en) * 2017-05-03 2022-12-06 Lg 电子株式会社 Method and apparatus for transmitting and receiving random access channel
US10568050B2 (en) * 2017-05-04 2020-02-18 Ofinno, Llc RACH power adjustment
US10425900B2 (en) * 2017-05-15 2019-09-24 Futurewei Technologies, Inc. System and method for wireless power control
CN110771216A (en) * 2017-06-15 2020-02-07 康维达无线有限责任公司 Uplink transmission power control
CN109120355B (en) * 2017-06-26 2024-01-02 华为技术有限公司 Method and device for determining path loss
CN109392123A (en) * 2017-08-10 2019-02-26 株式会社Ntt都科摩 Beam selection method, base station and user equipment
CN112753132A (en) * 2018-07-25 2021-05-04 弗劳恩霍夫应用研究促进协会 Beam correspondence indication and bitmap for beam reporting for wireless communication
CN110859003A (en) * 2018-08-22 2020-03-03 成都华为技术有限公司 Method and device for determining uplink resources
CN110958636B (en) * 2018-09-26 2022-03-29 维沃移动通信有限公司 CSI report reporting method, terminal equipment and network equipment

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