CN112751657A - Interference measurement method, base station, communication system, and storage medium - Google Patents
Interference measurement method, base station, communication system, and storage medium Download PDFInfo
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- CN112751657A CN112751657A CN201911048476.1A CN201911048476A CN112751657A CN 112751657 A CN112751657 A CN 112751657A CN 201911048476 A CN201911048476 A CN 201911048476A CN 112751657 A CN112751657 A CN 112751657A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- 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
- H04B17/345—Interference values
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
Abstract
The present disclosure provides an interference measurement method, a base station, a communication system, and a storage medium, wherein the method includes: the base station configures special interference measurement resources for the terminal to perform interference measurement on the wave beams; the terminal measures the wave beam based on the special interference resource and sends the measurement result to the base station; the base station determines the interference state of the terminal based on the measurement result; and the base station adjusts the special interference measurement resource according to the interference state, generates a new special interference measurement resource and sends the new special interference measurement resource to the terminal. The method, the device, the terminal and the storage medium can realize flexible configuration of interference measurement resources, realize a flexible interference measurement mechanism, adjust and measure the ZP CSI-RS and/or the NZP CSI-RS based on the measurement result to obtain accurate interference measurement, save pilot frequency overhead and ensure the reliability and robustness of a communication system.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an interference measurement method, a base station, a communication system, and a storage medium.
Background
The 5G (fifth generation mobile communication technology) communication system needs to meet the requirements of ultra-large traffic density, ultra-high transmission rate, lower transmission delay, more reliable network performance and the like. In a 5G NR system, under the application scenes of Multi-TRP and Multi-beam, a plurality of interference sources exist, and the Multi-user interference situations in cells and between cells, the same TRP and different TRP, the same wave beam and different wave beams are more complex and diversified. Therefore, how to obtain accurate interference measurements is extremely critical, but no specific solution is currently available.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an interference measurement method, a base station, a communication system and a storage medium.
According to an aspect of the present disclosure, there is provided an interference measurement method, including: the base station configures special interference measurement resources for the terminal to perform interference measurement on the wave beams; wherein the dedicated interference measurement resources comprise: ZP CSI-RS and NZP CSI-RS; the terminal measures the wave beam based on the special interference resource and sends the measurement result to the base station; the base station determines the interference state of the terminal based on the measurement result; the base station adjusts the special interference measurement resource according to the interference state, generates a new special interference measurement resource and sends the new special interference measurement resource to the terminal so that the terminal can measure the candidate wave beam again; wherein the adjusting comprises: adjusting the number of the ZP CSI-RSs and the NZP CSI-RSs and/or the resource types.
Optionally, the configuring, by the base station, dedicated interference measurement resources for the terminal to perform interference measurement on the beam includes: after the terminal establishes RRC connection with the base station, the base station allocates the dedicated interference measurement resource for the terminal based on the terminal capability; the base station sends an RRC initial configuration message to the terminal, and the RRC initial configuration message is used for configuring the special interference measurement resource for the terminal so that the terminal can measure the candidate beams based on the special interference measurement resource.
Optionally, the sending the measurement result to the base station includes: the terminal sends the measurement result to the base station through the RRC connection; wherein the measurement result comprises: index of the candidate beam and signal to interference plus noise ratio SINR.
Optionally, the determining, by the base station, the interference state of the terminal based on the measurement result includes: and if the base station determines that the SINR of at least one candidate beam is smaller than a preset SINR threshold value, determining that the interference state is a serious interference state.
Optionally, the adjusting, by the base station, the dedicated interference measurement resource according to the interference state, generating a new dedicated interference measurement resource, and sending the new dedicated interference measurement resource to the terminal includes: and if the base station determines that the interference state is a serious interference state, increasing the number of the ZP CSI-RSs and/or the NZP CSI-RSs and generating the new special interference measurement resource.
Optionally, the base station sends an RRC reconfiguration message to the terminal, where the RRC reconfiguration message is used to configure the new dedicated interference measurement resource for the terminal; the terminal measures the wave beam again based on the new special interference measurement resource to obtain a new measurement result; and the terminal reestablishes RRC connection with the base station, and the terminal sends the new measurement result to the base station through the RRC connection.
Optionally, if the base station determines that the interference state is a serious interference state, it determines whether the number of times of adjusting the dedicated interference measurement resource within a preset time period exceeds a preset number threshold, and if not, the base station adjusts the dedicated interference measurement resource.
Optionally, the resource types of the ZP CSI-RS and the NZP CSI-RS include: periodic, aperiodic, and semi-static.
According to another aspect of the present disclosure, there is provided a base station including: a measurement resource configuration module, configured to configure, for the terminal, a dedicated interference measurement resource for performing interference measurement on the beam; wherein the dedicated interference measurement resources comprise: ZP CSI-RS and NZP CSI-RS; an interference state determination module, configured to determine an interference state of the terminal based on a measurement result sent by the terminal; wherein the terminal measures the beam based on the dedicated interference resource, generating the measurement result; a measurement resource adjusting module, configured to adjust the dedicated interference measurement resource according to the interference state, generate a new dedicated interference measurement resource, and send the new dedicated interference measurement resource to the terminal, so that the terminal measures the candidate beam again; wherein the adjusting comprises: adjusting the number of the ZP CSI-RSs and the NZP CSI-RSs and/or the resource types.
Optionally, the measurement resource configuration module is configured to allocate the dedicated interference measurement resource to the terminal based on a terminal capability after RRC connection is established with the terminal; sending an RRC initial configuration message to the terminal, for configuring the dedicated interference measurement resource for the terminal, so that the terminal performs measurement on the candidate beams based on the dedicated interference measurement resource.
Optionally, the terminal sends the measurement result to the base station through the RRC connection; wherein the measurement result comprises: index of the candidate beam and signal to interference plus noise ratio SINR.
Optionally, the interference state determining module is configured to determine that the interference state is an interference serious state if it is determined that the SINR of at least one candidate beam is less than a preset SINR threshold.
Optionally, the measurement resource adjusting module is configured to increase the number of ZP CSI-RSs and/or NZP CSI-RSs to generate the new dedicated interference measurement resource if it is determined that the interference state is an interference severe state.
Optionally, the measurement resource adjusting module is configured to send an RRC reconfiguration message to the terminal, where the RRC reconfiguration message is used to configure the new dedicated interference measurement resource for the terminal; wherein the terminal re-measures the beam based on the new dedicated interference measurement resource to obtain a new measurement result; and the terminal reestablishes RRC connection with the base station, and the terminal sends the new measurement result to the base station through the RRC connection.
Optionally, the measurement resource adjusting module is configured to, if it is determined that the interference state is a serious interference state, determine whether a number of times of adjusting the dedicated interference measurement resource within a preset time period exceeds a preset number threshold, and if not, adjust the dedicated interference measurement resource.
According to still another aspect of the present disclosure, there is provided a communication system including: a terminal, a base station as described above.
According to yet another aspect of the present disclosure, a computer-readable storage medium is provided, which stores computer instructions for execution by a processor to perform the method as described above.
The interference measurement method, the base station, the communication system and the storage medium can realize flexible configuration of interference measurement resources, the interference measurement resources comprise ZP CSI-RS and NZP CSI-RS, realize a flexible interference measurement mechanism, adjust the ZP CSI-RS and/or the NZP CSI-RS based on measurement results and measure again to obtain accurate interference measurement, and can save pilot frequency overhead.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without inventive exercise.
Fig. 1 is a flow diagram of one embodiment of an interference measurement method according to the present disclosure;
fig. 2 is a schematic view of a NR-MIMO multi-beam scenario;
fig. 3 is a schematic flow chart illustrating configuring dedicated interference measurement resources according to an embodiment of the interference measurement method of the present disclosure;
fig. 4 is a schematic flow chart illustrating re-measurement of beams according to an embodiment of the interference measurement method of the present disclosure;
fig. 5 is a schematic signaling interaction diagram of an embodiment of an interference measurement method according to the present disclosure;
fig. 6 is a block diagram of one embodiment of a base station according to the present disclosure;
fig. 7 is a block diagram of one embodiment of a communication system according to the present disclosure.
Detailed Description
The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The terms "first", "second", and the like are used hereinafter only for descriptive distinction and not for other specific meanings.
Fig. 1 is a schematic flow chart of an interference measurement method according to an embodiment of the present disclosure, as shown in fig. 1:
The terminal is a mobile phone, a tablet computer and the like, and the base station can be various base stations. The dedicated interference measurement resources include: ZP CSI-RS (ZP channel state information measurement reference signal) and NZP CSI-RS (NZP channel state information measurement reference signal). And the base station configures special ZP and NZP-CSI-RS resources so that the terminal completes interference measurement based on the special ZP and NZP-CSI-RS resources. The resource types of the ZP CSI-RS and the NZP CSI-RS comprise: periodic, aperiodic, and semi-static.
And 102, the terminal measures the wave beam based on the special interference resource and sends the measurement result to the base station.
The terminal measures beams based on the dedicated interference resources, and the beams can be a transmission beam generated by the base station or a receiving beam generated by the terminal, and the transmission beam generated by the base station and the receiving beam generated by the terminal. The terminal may use various existing methods for measuring the beam.
And 103, the base station determines the interference state of the terminal based on the measurement result. The interference state includes: a severe interference state, a good interference state, etc.
And step 104, the base station adjusts the special interference measurement resource according to the interference state, generates a new special interference measurement resource and sends the new special interference measurement resource to the terminal so that the terminal can measure the candidate wave beam again.
The base station adjusting the dedicated interference measurement resource comprises: adjusting the number of the ZP CSI-RSs and the NZP CSI-RSs or the resource types, and adjusting the number of the ZP CSI-RSs and the NZP CSI-RSs and the resource types simultaneously. For example, the resource type of the NZP CSI-RS is adjusted from periodic to aperiodic, the number of NZP CSI-RS is adjusted from 3 to 5, and so on.
The terminal measures a beam based on the dedicated Interference resource, and generates a measurement result including SINR (Signal to Interference plus Noise Ratio) and the like. The SINR can be a physical layer signal-to-interference-and-noise ratio L1-SINR, and L1-SINR is an important reference basis for beam selection and beam failure recovery. The definition of L1-SINR is a linear average of the useful power over a resource carrying a CSI (channel state information) reference Signal (or SSB (Synchronization Signal Block) Synchronization Signal) divided by a linear average of the noise and interference power in the same frequency band.
The measurement work of the base station and the terminal comprises two parts: the measurement of the effective signal power and the measurement of the interference signal power. NR supports interference measurement based on CSI-IM and NZP CSI-RS, and 1-3 reference signal sets (RS Setting) can be associated with each trigger state: associating 1 set of reference signals for beam management; associating 2 reference signal sets, one for channel measurement and the other for interference measurement based on CSI-IM or NZP CSI-RS; associating 3 sets of reference signals, one for channel measurement, one for CSI-IM based interference measurement, and another for NZP CSI-RS based interference measurement.
In order to obtain more accurate interference measurement, the disclosure provides an interference measurement method for NR-MIMO (New Radio Multi-input Multi-output) Multi-beams, which effectively achieves accurate measurement of Multi-beam complex interference conditions by configuring ZP-CSI-RS and NZP-CSI-RS reference signals of different periods, thereby assisting a base station and a terminal in beam selection, beam management, beam failure recovery and the like.
As shown in fig. 2, in the NR-MIMO multi-beam coverage scenario, the interference situation is complex, and it is very important to accurately measure the interference. For example, for the UE2, there is not only interference to other TRPs (Transmission Reception points) by beams in other TRPs, but also interference between users in a cell, and therefore, a hybrid interference measurement mechanism based on dedicated NZP and ZP CSI-RS resources may be adopted, which is more widely and flexibly applicable.
In one embodiment, the base station may use multiple methods for configuring dedicated interference measurement resources for the terminal to perform interference measurements on beams. Fig. 3 is a schematic flowchart of configuring dedicated interference measurement resources according to an embodiment of the interference measurement method of the present disclosure, as shown in fig. 3:
The terminal can access the base station by adopting a random access mode. The terminal capability can be terminal network capability, terminal wireless access capability and the like, and the base station can obtain the terminal capability by using various existing methods. And the base station determines the interference state of the terminal based on the terminal capability and allocates special interference measurement resources for the terminal based on the interference state.
The terminal sends the measurement result to the base station through RRC connection, and the measurement result comprises: index of the candidate beam and signal to interference plus noise ratio SINR. The measurement results may include indexes and signal to interference and noise ratios, SINRs, of one or more candidate beams. The candidate beams may be one or more beams selected by the terminal from among the receive beams and/or the transmit beams based on the signal to interference and noise ratio SINR.
The base station can obtain the geographic position of the terminal and the related parameters such as the terminal capability and the like in the random access process. As shown in fig. 5, in the random access procedure, the terminal sends a random access preamble, the base station sends a random access response message after receiving the random access preamble, then the terminal sends an RRC connection request, and the terminal receives an RRC connection setup. The random access procedure is used to obtain uplink synchronization, and after the terminal completes the random access procedure, the terminal may perform uplink communication with the base station. After the terminal establishes RRC connection with the base station, the base station may obtain measurement information sent by the terminal.
After the terminal completes RRC connection, according to an RRC initial configuration message sent by the base station, the terminal carries out periodic/semi-continuous/aperiodic CSI-RS channel measurement and interference measurement based on the special interference measurement resource, and reports the L1-SINR of a plurality of candidate beams. The CSI-RS reference signals comprise NZP CSI-RS and ZP CSI-RS, the NZP CSI-RS and the ZP CSI-RS support periodic/semi-continuous/aperiodic time domain behaviors, and are relatively flexible and not 'always-on' reference signals, interference measurement accuracy is guaranteed, and pilot frequency overhead can be saved.
And if the ZP CSI-RS does not send power at the configured time-frequency position, the received power at the position is interference information, so that the inter-cell interference can be accurately measured, but the inter-cell interference between users cannot be measured. And the NZP CSI-RS transmits power at the configured time-frequency position, each terminal measures the channel characteristic of the terminal through the NZP CSI-RS, and subtracts the estimation result from the received signal to obtain interference information. Through the measurement of the CSI-RS reference signals, L1-SINR of a plurality of receiving beams is obtained, the first N maximum values are selected as candidate beams and reported to a base station, and the reported measurement result comprises the following steps: index of the candidate beam and the corresponding L1-SINR.
And if the base station determines that the SINR of at least one candidate beam is smaller than a preset SINR threshold value, determining that the interference state is an interference serious state. And if the base station determines that the SINRs of all the candidate beams are greater than or equal to a preset SINR threshold value, determining that the interference state is a good interference state. And if the base station determines that the interference state is a serious interference state, increasing the number of ZP CSI-RSs and/or NZP CSI-RSs and generating a new special interference measurement resource.
Fig. 4 is a schematic flowchart of a method for measuring interference according to an embodiment of the present disclosure, where the method includes:
In step 402, the terminal re-measures the beam based on the new dedicated interference measurement resource to obtain a new measurement result.
In an embodiment, an RRC reconfiguration message sent by a base station to a terminal carries information of a new dedicated interference measurement resource, where the new dedicated interference measurement resource includes a ZP CSI-RS and an NZP CSI-RS, and may also only include the ZP CSI-RS or the NZP CSI-RS; the ZP CSI-RS and the NZP CSI-RS in the new special interference measurement resource are different from the number and/or resource types of the ZP CSI-RS and the NZP CSI-RS in the special interference measurement resource configured before the base station.
In step 403, the terminal reestablishes the RRC connection with the base station, and the terminal sends a new measurement result to the base station through the RRC connection. The new measurements include the Index and the signal to interference plus noise ratio SINR of the candidate beam.
In one embodiment, the base station may determine the current interference condition of the terminal according to one or more of the geographical location information of the terminal, the terminal capability, and the test result. The base station judges the L1-SINR value, if the L1-SINR value is larger, the interference is smaller, and if the L1-SINR value is smaller, the interference is serious; in addition, the UE position can also be used as auxiliary information for judging the interference situation, and the interference situation of the terminal far from the base station is more complicated and is adjusted accordingly. As shown in fig. 5, the gNB obtains a measurement result reported by the base station, and if the L1-SINR value of one or more candidate beams is smaller than a threshold value, the interference state is a serious interference state, and more NZP CSI-RS resources can be activated to perform interference measurement, so as to obtain more accurate interference measurement; if the interference situation is good, the original configuration is kept unchanged. And the base station sends RRC reconfiguration to trigger the UE to initiate an RRC connection reestablishment process, to complete RRC establishment again and to update corresponding RRC signaling configuration.
And if the base station determines that the interference state is a serious interference state, judging whether the times of adjusting the special interference measurement resources in a preset time period exceed a preset time threshold, and if not, adjusting the special interference measurement resources by the base station. For example, if the base station determines that the interference state is a serious interference state, it determines that the number of times of adjusting the dedicated interference measurement resource in the latest 1 hour is 1, and does not exceed a preset number threshold 3, the base station adjusts the dedicated interference measurement resource. And the base station sends an RRC reconfiguration message to the terminal for configuring new special interference measurement resources for the terminal. If the number of times of adjusting the dedicated interference measurement resource in the last 1 hour is 4 and exceeds the preset number threshold 3, the base station does not adjust the dedicated interference measurement resource and does not send an RRC reconfiguration message to the terminal.
In one embodiment, it is assumed that the number of REs configuring the NZP CSI-RS per RB (resource block) is N, and the number of REs configuring the ZP CSI-RS per RB is M, where N ≧ 0, M ≧ 0, where N ≧ 0 means that only the ZP CSI-RS is configured for interference measurement, and when M ≧ 0 means that only the NZP CSI-RS is configured for interference measurement. The base station initially configures dedicated interference measurement resources for the terminal to perform interference measurement on beams, where the dedicated interference measurement resources include N NZP CSI-RSs and M ZP CSI-RSs, where N is 3 and M is 1. The base station judges the current interference situation of the terminal according to the measurement result of the beam reported by the UE terminal, adjusts the special interference resource, sends RRC reconfiguration to the terminal, and sends the generated new special interference measurement resource to the terminal, thereby obtaining more accurate interference measurement value.
In one embodiment, as shown in fig. 5, the terminal is configured to send the measurement result to the base station by sending a CSI Report to the base station. The CSI-ReportConfig signaling is configured as follows:
the CSI-IM-resource for interference in the signaling is ZP-CSI-RS-resource for interference, and the configured CSI-resource configid is used to find the corresponding CSI-resource config, which is equivalent to finding the CSI-resource config through the ID index number of the CSI-RS. The signaling parameters and configuration are as follows:
in the interference measurement method in the above embodiment, flexible configuration of IMR (interference measurement resource) can be realized through RRC signaling, and the interference measurement resource includes ZP CSI-RS and NZP CSI-RS, so that a flexible interference measurement mechanism is realized without being limited by reference signal resources; the periods of the ZP and NZP CSI-RS reference signals can be matched, and periodic/semi-persistent/aperiodic time domain transmission, measurement and reporting are supported, so that pilot frequency overhead can be saved while accurate interference measurement is obtained, and the applicable scene is wider.
In one embodiment, as shown in fig. 6, the present disclosure provides a base station 60, comprising: a measurement resource configuration module 61, an interference status determination module 62 and a measurement resource adjustment module 63. The measurement resource configuration module 61 configures dedicated interference measurement resources for the terminal to perform interference measurement on the beams; wherein the dedicated interference measurement resource comprises: ZP CSI-RS and NZP CSI-RS.
The interference state determination module 62 determines the interference state of the terminal based on the measurement result sent by the terminal; the terminal measures the beam based on the special interference resource to generate a measurement result. The measurement resource adjusting module 63 adjusts the dedicated interference measurement resource according to the interference state, generates a new dedicated interference measurement resource and sends the new dedicated interference measurement resource to the terminal, so that the terminal measures the candidate beam again; wherein the adjusting comprises: the number of ZP CSI-RSs and NZP CSI-RSs and/or the resource types are adjusted.
The measurement resource configuration module 61 allocates dedicated interference measurement resources to the terminal based on the terminal capability after establishing RRC connection with the terminal. The measurement resource configuration module 61 sends an RRC initial configuration message to the terminal, which is used to configure dedicated interference measurement resources for the terminal, so that the terminal performs measurement on candidate beams based on the dedicated interference measurement resources.
The terminal sends the measurement result to the base station through RRC connection; wherein, the measurement result includes: index of the candidate beam and signal to interference plus noise ratio SINR. The interference state determination module 62 determines the interference state as an interference severe state if it is determined that the SINR of the at least one candidate beam is less than the preset SINR threshold. If the measurement resource adjusting module 63 determines that the interference state is a serious interference state, the number of ZP CSI-RSs and/or NZP CSI-RSs is increased, and new dedicated interference measurement resources are generated.
The measurement resource adjusting module 63 sends an RRC reconfiguration message to the terminal, which is used to configure a new dedicated interference measurement resource for the terminal; and the terminal performs measurement again on the beam based on the new special interference measurement resource to obtain a new measurement result. And the terminal reestablishes the RRC connection with the base station, and the terminal sends a new measurement result to the base station through the RRC connection.
If the measurement resource adjusting module 63 determines that the interference state is a serious interference state, it determines whether the number of times of adjusting the dedicated interference measurement resource within a preset time period exceeds a preset number threshold, and if not, the measurement resource adjusting module 63 adjusts the dedicated interference measurement resource.
In one embodiment, as shown in fig. 7, the present disclosure provides a communication system comprising: terminal 72, such as a base station in any of the embodiments above.
In one embodiment, the present disclosure provides a computer-readable storage medium storing computer instructions for a processor to perform the uplink channel power control method as in any of the above embodiments.
The interference measurement method, the base station, the communication system and the storage medium provided in the above embodiments can implement flexible configuration of interference measurement resources, the interference measurement resources include ZP CSI-RS and NZP CSI-RS, implement a flexible interference measurement mechanism, adjust and re-measure the ZP CSI-RS and/or NZP CSI-RS based on the measurement result, obtain accurate interference measurement, save pilot overhead, and be applicable to various scenarios, and can ensure reliability and robustness of the communication system.
The method and system of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (17)
1. An interference measurement method, comprising:
the base station configures special interference measurement resources for the terminal to perform interference measurement on the wave beams; wherein the dedicated interference measurement resources comprise: ZP CSI-RS and NZP CSI-RS;
the terminal measures the wave beam based on the special interference resource and sends the measurement result to the base station;
the base station determines the interference state of the terminal based on the measurement result;
the base station adjusts the special interference measurement resource according to the interference state, generates a new special interference measurement resource and sends the new special interference measurement resource to the terminal so that the terminal can measure the candidate wave beam again;
wherein the adjusting comprises: adjusting the number of the ZP CSI-RSs and the NZP CSI-RSs and/or the resource types.
2. The method of claim 1, the base station configuring dedicated interference measurement resources for the terminal for interference measurement on the beam comprising:
after the terminal establishes RRC connection with the base station, the base station allocates the dedicated interference measurement resource for the terminal based on the terminal capability;
the base station sends an RRC initial configuration message to the terminal, and the RRC initial configuration message is used for configuring the special interference measurement resource for the terminal so that the terminal can measure the candidate beams based on the special interference measurement resource.
3. The method of claim 2, the sending the measurement results to the base station comprising:
the terminal sends the measurement result to the base station through the RRC connection;
wherein the measurement result comprises: index of the candidate beam and signal to interference plus noise ratio SINR.
4. The method of claim 3, the base station determining the interference state of the terminal based on the measurement results comprising:
and if the base station determines that the SINR of at least one candidate beam is smaller than a preset SINR threshold value, determining that the interference state is a serious interference state.
5. The method of claim 4, wherein the base station adjusts the dedicated interference measurement resource according to the interference status, generates a new dedicated interference measurement resource and sends the new dedicated interference measurement resource to the terminal, and comprises:
and if the base station determines that the interference state is a serious interference state, increasing the number of the ZP CSI-RSs and/or the NZP CSI-RSs and generating the new special interference measurement resource.
6. The method of claim 5, further comprising:
the base station sends RRC reconfiguration information to the terminal, and the RRC reconfiguration information is used for configuring the new special interference measurement resource for the terminal;
the terminal measures the wave beam again based on the new special interference measurement resource to obtain a new measurement result;
and the terminal reestablishes RRC connection with the base station, and the terminal sends the new measurement result to the base station through the RRC connection.
7. The method of claim 6, further comprising:
and if the base station determines that the interference state is a serious interference state, judging whether the times of adjusting the special interference measurement resource in a preset time period exceed a preset time threshold, and if not, adjusting the special interference measurement resource by the base station.
8. The method of any one of claims 1 to 7,
the resource types of the ZP CSI-RS and the NZP CSI-RS include: periodic, aperiodic, and semi-static.
9. A base station, comprising:
a measurement resource configuration module, configured to configure, for the terminal, a dedicated interference measurement resource for performing interference measurement on the beam; wherein the dedicated interference measurement resources comprise: ZP CSI-RS and NZP CSI-RS;
an interference state determination module, configured to determine an interference state of the terminal based on a measurement result sent by the terminal; wherein the terminal measures the beam based on the dedicated interference resource, generating the measurement result;
a measurement resource adjusting module, configured to adjust the dedicated interference measurement resource according to the interference state, generate a new dedicated interference measurement resource, and send the new dedicated interference measurement resource to the terminal, so that the terminal measures the candidate beam again; wherein the adjusting comprises: adjusting the number of the ZP CSI-RSs and the NZP CSI-RSs and/or the resource types.
10. The base station of claim 9, wherein,
the measurement resource configuration module is configured to allocate the dedicated interference measurement resource to the terminal based on a terminal capability after RRC connection is established with the terminal; sending an RRC initial configuration message to the terminal, for configuring the dedicated interference measurement resource for the terminal, so that the terminal performs measurement on the candidate beams based on the dedicated interference measurement resource.
11. The base station of claim 10, wherein,
the terminal sends the measurement result to the base station through the RRC connection; wherein the measurement result comprises: index of the candidate beam and signal to interference plus noise ratio SINR.
12. The base station of claim 11, wherein,
the interference state determining module is configured to determine that the interference state is an interference serious state if it is determined that the SINR of at least one candidate beam is less than a preset SINR threshold.
13. The base station of claim 12, wherein,
the measurement resource adjusting module is configured to increase the number of the ZP CSI-RS and/or the NZP CSI-RS and generate the new dedicated interference measurement resource if it is determined that the interference state is a serious interference state.
14. The base station of claim 13, wherein,
the measurement resource adjusting module is configured to send an RRC reconfiguration message to the terminal, where the RRC reconfiguration message is used to configure the new dedicated interference measurement resource for the terminal;
wherein the terminal re-measures the beam based on the new dedicated interference measurement resource to obtain a new measurement result; and the terminal reestablishes RRC connection with the base station, and the terminal sends the new measurement result to the base station through the RRC connection.
15. The base station of claim 14, wherein,
the measurement resource adjusting module is configured to determine whether the number of times for adjusting the dedicated interference measurement resource within a preset time period exceeds a preset number threshold if it is determined that the interference state is a serious interference state, and adjust the dedicated interference measurement resource if the number of times for adjusting the dedicated interference measurement resource within the preset time period does not exceed the preset number threshold.
16. A communication system, comprising:
terminal, base station according to any of claims 9 to 15.
17. A computer-readable storage medium having stored thereon computer instructions for execution by a processor of the method of any one of claims 1 to 8.
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