CN115734251A - Parameter configuration method and device for CSI-RS sequence scrambling - Google Patents
Parameter configuration method and device for CSI-RS sequence scrambling Download PDFInfo
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Abstract
The embodiment of the invention provides a parameter configuration method and a parameter configuration device for CSI-RS sequence scrambling, which are applied to network management equipment, and the method comprises the following steps: configuring the CSI-RS according to RRC signaling; when the method is used for configuring the mobility measurement parameters, generating configuration parameters and physical cell identification parameters of a cell according to the sequences, and determining a scrambling code sequence of the CSI-RS; when the method is used for configuring the non-zero power CSI-RS resource parameters, determining the scrambling code sequence of the CSI-RS according to the scrambling code identification parameters and the physical cell identification parameters of the cell; and when the method is used for configuring the zero-power CSI-RS resource parameters, determining the scrambling code sequence of the CSI-RS according to the physical cell identification parameters of the cell. When the CSI-RS is used in different scenes, different scrambling identification methods are explicitly considered, and different sequence generation schemes are planned for different cells, so that the possibility that different cells send the same sequence is reduced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a parameter configuration method and a parameter configuration apparatus for CSI-RS sequence scrambling.
Background
The sequence generation of the Channel State Information-Reference Signal (CSI-RS) designed by the current 5G NR protocol is not specified to be associated with a cell ID, so that a decoder of a User Equipment (UE) cannot distinguish whether a received Signal is from a local cell or from other cells, and it may decode signals of the local cell or signals of other cells, so that performance in an external field test may degrade.
Currently, in order to reduce interference between adjacent cells, a higher-layer configuration scrambling ID is generally adopted: the sending end scrambles by the special scrambling code sequence of the cell, the receiving end then descrambles, and only the user equipment in the cell can descramble the information in the cell according to the special scrambling code sequence of the cell formed by the ID of the cell.
However, in current network usage, most of the CSI-RS reference signals between cells use the same time-frequency resource, and when the initial sequence values (Cinit) are the same, the CSI-RS sequences configured by different NR cells are completely the same, the CSI measurement and reporting accuracy of the ue located at the edge of a cell is greatly affected, and the reported CSI may even be based on the calculation result of the CSI-RS in the neighboring cell, so that the Rank Indication (RI) reported by the ue is reduced, the Channel Quality Indication (CQI) reporting is inaccurate, and the downlink traffic rate is reduced.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide a parameter configuration method for CSI-RS sequence scrambling and a corresponding parameter configuration apparatus for CSI-RS sequence scrambling that overcome or at least partially solve the above problems.
In order to solve the above problem, the embodiment of the present invention discloses a parameter configuration method for CSI-RS sequence scrambling, which is applied to a network management device, and the method includes:
receiving a Radio Resource Control (RRC) signaling sent by a base station, and configuring a channel state information reference signal (CSI-RS) according to the RRC signaling; the RRC signaling comprises a sequence generation configuration parameter and a scrambling code identification parameter;
when the CSI-RS is configured for configuring the mobility measurement parameters, determining physical cell identification parameters of a cell corresponding to the base station, generating configuration parameters and the physical cell identification parameters of the cell according to the sequences, and determining a scrambling code sequence of the CSI-RS;
when the CSI-RS is configured for configuring non-zero power CSI-RS resource parameters, determining physical cell identification parameters of a cell corresponding to the base station, and determining a scrambling code sequence of the CSI-RS according to the scrambling code identification parameters and the physical cell identification parameters of the cell;
when the CSI-RS is configured for configuring a zero-power CSI-RS resource parameter, determining a physical cell identification parameter of a cell corresponding to the base station, and determining a scrambling code sequence of the CSI-RS according to the physical cell identification parameter of the cell; and the scrambling code sequence of the CSI-RS is used for scrambling data sent to the user equipment by the base station.
Optionally, when configuring the CSI-RS for configuring the mobility measurement parameter, determining a physical cell identifier parameter of a cell corresponding to the base station, generating a configuration parameter and a physical cell identifier parameter of the cell according to the sequence, and determining a scrambling code sequence of the CSI-RS includes:
when the CSI-RS is configured for configuring the mobility measurement parameters, generating parameter values of the configuration parameters by the sequence transmitted by the RRC signaling, and configuring the parameter values as the physical cell identification of the cell;
and determining the CSI-RS scrambling code sequence according to the sequence generation configuration parameter value.
Optionally, when configuring the CSI-RS for configuring a non-zero power CSI-RS resource parameter, determining a physical cell identifier parameter of a cell corresponding to the base station, and determining a scrambling code sequence of the CSI-RS according to the scrambling code identifier parameter and the physical cell identifier parameter of the cell includes:
when the CSI-RS is configured for configuring non-zero power CSI-RS resource parameters, configuring parameter values of scrambling code identification parameters in the RRC signaling as physical cell identifications of the cells;
and determining the scrambling code sequence of the CSI-RS according to the parameter value of the scrambling code identification parameter.
Optionally, the method further comprises:
receiving CSI-RS measurement information sent by the base station, wherein the CSI-RS measurement information is information of the base station, which is obtained by measuring a CSI-RS and reporting the CSI-RS to the base station;
judging whether the CSI-RS measurement information is abnormal or not;
and reconfiguring the CSI-RS according to an abnormal condition.
Optionally, the receiving CSI-RS measurement information sent by the base station includes:
receiving reference signal power RSRP of CSI-RS of a first cell, RSRP of CSI-RS of a second cell, a first cell identifier, a second cell identifier, a precoding matrix PMI of the first cell and PMI information of the second cell which are measured by the user equipment in the process of moving from the first cell edge to the second cell;
the determining whether the CSI-RS measurement information is abnormal includes:
and judging whether the CSI-RS is abnormal or not according to the reference signal power RSRP of the CSI-RS of the first cell, the RSRP of the CSI-RS of the second cell, the precoding matrix PMI of the first cell and the PMI information of the second cell.
Optionally, the reconfiguring the CSI-RS according to the abnormal condition includes:
counting the abnormal times of the CSI-RS in a preset period;
determining whether the initial value of the CSI-RS scrambling code sequence of the first cell is the same as the initial value of the CSI-RS scrambling code sequence of the second cell or not according to the first cell identifier, the second cell identifier and the corresponding relation between the initial values of the cell identifiers and the CSI-RS scrambling code sequences under the condition that the abnormal times are larger than a preset abnormal times threshold value;
and under the condition that the initial value of the CSI-RS scrambling code sequence of the first cell is the same as the initial value of the CSI-RS scrambling code sequence of the second cell, reconfiguring the CSI-RS.
The embodiment of the invention also discloses a parameter configuration device for CSI-RS sequence scrambling, which is applied to network management equipment, and the device comprises:
the first receiving module is used for receiving a Radio Resource Control (RRC) signaling sent by a base station and configuring a channel state information reference signal (CSI-RS) according to the RRC signaling; the RRC signaling comprises a sequence generation configuration parameter and a scrambling code identification parameter;
a first determining module, configured to determine a physical cell identifier parameter of a cell corresponding to the base station when the CSI-RS is configured for configuring a mobility measurement parameter, generate a configuration parameter and a physical cell identifier parameter of the cell according to the sequence, and determine a scrambling code sequence of the CSI-RS;
a second determining module, configured to determine a physical cell identity parameter of a cell corresponding to the base station when the CSI-RS is configured to configure a non-zero power CSI-RS resource parameter, and determine a scrambling code sequence of the CSI-RS according to the scrambling code identity parameter and the physical cell identity parameter of the cell;
a third determining module, configured to determine, when the CSI-RS is configured to configure a zero-power CSI-RS resource parameter, a physical cell identification parameter of a cell corresponding to the base station, and determine, according to the physical cell identification parameter of the cell, a scrambling code sequence of the CSI-RS; and the scrambling code sequence of the CSI-RS is used for scrambling data sent to the user equipment by the base station.
Optionally, the first determining module includes:
a first configuration sub-module, configured to, when configuring the CSI-RS for configuring a mobility measurement parameter, generate a parameter value of a configuration parameter from a sequence issued by the RRC signaling, and configure the parameter value as a physical cell identifier of the cell;
and the first determining submodule is used for determining the CSI-RS scrambling code sequence according to the sequence generation configuration parameter value.
Optionally, the second determining module includes:
a second configuration submodule, configured to configure a parameter value of a scrambling code identification parameter in the RRC signaling as a physical cell identifier of the cell when configuring the CSI-RS for configuring a non-zero power CSI-RS resource parameter;
and the second determining submodule is used for determining the scrambling code sequence of the CSI-RS according to the parameter value of the scrambling code identification parameter.
Optionally, the method further comprises:
a second receiving module, configured to receive CSI-RS measurement information sent by the base station, where the CSI-RS measurement information is information of the base station, where the CSI-RS measurement information is obtained by measuring a CSI-RS by the user equipment and is reported to the base station;
the judging module is used for judging whether the CSI-RS measurement information is abnormal or not;
and the reconfiguration module is used for reconfiguring the CSI-RS according to an abnormal condition.
Optionally, the cells include a first cell and a second cell, and the second node receiving module includes:
a second receiving submodule, configured to receive reference signal power RSRP of a first cell CSI-RS, RSRP of a second cell CSI-RS, a first cell identifier, a second cell identifier, a precoding matrix PMI of the first cell, and PMI information of the second cell, which are measured by the base station in a process of moving from the first cell edge to the second cell;
the judging module comprises:
and the judging submodule is used for judging whether the CSI-RS is abnormal or not according to the reference signal power RSRP of the CSI-RS of the first cell, the RSRP of the CSI-RS of the second cell, the precoding matrix PMI of the first cell and the PMI information of the second cell.
Optionally, the reconfiguration module includes:
the counting module is used for counting the abnormal times of the CSI-RS in a preset period;
a third determining submodule, configured to determine, when the abnormal number is greater than a preset abnormal number threshold, whether a CSI-RS scrambling code sequence initial value of the first cell is the same as a CSI-RS scrambling code sequence initial value of the second cell according to the first cell identifier, the second cell identifier, and a correspondence between the cell identifier and the CSI-RS scrambling code sequence initial value;
and the reconfiguration submodule is used for reconfiguring the CSI-RS under the condition that the initial value of the CSI-RS scrambling code sequence of the first cell is the same as the initial value of the CSI-RS scrambling code sequence of the second cell.
An embodiment of the present invention further provides an electronic device, including: a processor, a memory and a computer program stored on the memory and being executable on the processor, the computer program, when executed by the processor, implementing the steps of the parameter configuration method for CSI-RS sequence scrambling as described above.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the parameter configuration method based on scrambling for CSI-RS sequences as described above are implemented.
The embodiment of the invention has the following advantages:
in the embodiment of the invention, RRC signaling sent by a base station is received, and a channel state information reference signal CSI-RS is configured according to the RRC signaling; the RRC signaling comprises a sequence generation configuration parameter and a scrambling code identification parameter; when the CSI-RS is configured for configuring the mobility measurement parameters, determining physical cell identification parameters of a cell corresponding to the base station, generating the configuration parameters and the physical cell identification parameters of the cell according to the sequences, and determining scrambling code sequences of the CSI-RS; when the CSI-RS is configured for configuring non-zero power CSI-RS resource parameters, determining physical cell identification parameters of a cell corresponding to the base station, and determining a scrambling code sequence of the CSI-RS according to the scrambling code identification parameters and the physical cell identification parameters of the cell; when the configuration of the CSI-RS is used for configuring a zero-power CSI-RS resource parameter, determining a physical cell identification parameter of a cell corresponding to the base station, and determining a scrambling code sequence of the CSI-RS according to the physical cell identification parameter of the cell; the scrambling sequence of the CSI-RS is used for scrambling data transmitted to the user equipment by the base station. When the CSI-RS is used in different scenes, different scrambling identification methods are explicitly considered, and different CSI-RS sequence generation schemes are planned for different cells, so that the possibility that the same sequence is sent by different cells is reduced.
Drawings
Fig. 1 is a flowchart illustrating steps of a parameter configuration method for CSI-RS sequence scrambling according to an embodiment of the present invention;
fig. 2 is a block diagram of a parameter configuration apparatus for CSI-RS sequence scrambling according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The CSI-RS is a type of Reference Signal used for downlink channel state information measurement in the NR, and the CSI is channel state information used by the UE to feed back downlink channel quality to the base station, and is composed of a CQI, a PMI (Precoding Matrix Indicator), a CRI (CSI-RS Resource Indicator), an SSBRI (SS/PBCH Block Resource Indicator), an LI (Layer Indicator), an RI (Rank Indicator), an L1-RSRP (Layer 1Reference Signal Received Power), and time-frequency domain resources required for transmission are controlled by the base station. The UE can feed back the measured CSI to the base station, and the base station can realize the scheduling of switching and channel dependence and link adaptation according to the CSI.
In an actual scenario, the wireless Channel condition may change continuously, and the ue needs to feed back the received downlink Channel condition to the base station (gnnodeb) through Channel State Information (CSI), so that the gnnodeb takes the Channel quality into account during downlink scheduling. Different from the 4G LTE that only a single beam is supported, a Channel State Information-Reference Signal (CSI-RS) in a 5G New air interface (New Radio, NR) supports configuration of a narrowband multi-beam, a weighting algorithm is used to enable a base station to transmit data by using a CSI-RS optimal beam weight during scheduling, and coverage and rate are different under different beam configurations. If the initial values of the configured CSI-RS sequences are the same, the user equipment may not estimate the channel quality accurately, so that the RI reported by the terminal is reduced, the CQI reported is not accurate, and the downlink traffic rate is reduced. In addition, due to the misjudgment of the UE, the CSI-RS may cause interference to the traffic channels of other cells, and affect the downlink MCS and the traffic rate. Therefore, the CSI-RS sequences need to be configured so as to be staggered, thereby reducing the possibility that different cells transmit the same sequence.
One of the core concepts of the embodiments of the present invention is that, when the CSI-RS is used in different scenarios, different scrambling ID methods are explicitly considered, and different root sequence generation schemes are planned for different cells, thereby reducing the possibility of sending the same sequence by different cells.
Referring to fig. 1, a flowchart of steps of a parameter configuration method for CSI-RS sequence scrambling according to an embodiment of the present invention is shown, and is applied to a network management device, where the method specifically includes the following steps:
In the embodiment of the present invention, the connection between the base station and the ue may be established based on a Radio Resource Control (RRC) protocol, and may be used for the base station and the ue to exchange RRC messages.
The CSI-RS sequence is generated by a pseudo-random sequence r (m), the pseudo-random sequence is initialized at the beginning of each OFDM symbol (extracted from TS 38.211), and the CSI-RS sequence r (m) is defined as follows:
wherein the pseudo-random sequence c (n) is initialized according to the following formula:
c init is the initial value of the sequence, counted by OFDM symbols per time slot
Intra-frame slot numbering
OFDM symbol number and scrambling code serial number n in time slot ID And (6) determining.
Illustratively, the channel state information reference signal CSI-RS may be configured based on RRC signaling sent by the base station, which may include a sequence generation configuration parameter and a scrambling code identification parameter.
As an example, n ID The setting may be performed by a Scrambling code identification parameter (Scrambling ID) or a Sequence Generation configuration parameter (Sequence Generation configuration) in RRC signaling.
As an example, the CSI-RS scrambling sequence may be according to n ID Initialization, n may be ID The CSI-RS resource is allocated, a scrambling ID with the value of 0-1023 can be used for initializing a CSI-RS scrambling sequence, and the scrambling ID can be configured through RRC information.
As an example, the network management device may configure a CSI-RS sequence generation manner based on an existing RAN1 (radio access network) protocol, for example, a generation method of a scrambling code ID and a sequence generation configuration may be specified from a standard, or a Physical Cell Identifier (PCI) may be configured for the CSI-RS sequence, so as to reduce the possibility that different cells send the same sequence.
And 102, when the CSI-RS is configured for configuring the mobility measurement parameters, determining physical cell identification parameters of a cell corresponding to the base station, generating configuration parameters and the physical cell identification parameters of the cell according to the sequences, and determining a CSI-RS scrambling code sequence.
In the embodiment of the present invention, the Sequence Generation configuration may be configured in a CSI-RS Mobility Resource (CSI-RS-Resource-Mobility IE).
As an example, when the CSI-RS is used for configuring a mobility measurement CSI-RS, a physical cell identity parameter of a cell corresponding to a base station is determined, a configuration parameter and a physical cell identity parameter of the cell are generated according to the sequence, and a scrambling code sequence of the CSI-RS is determined.
In an embodiment of the present invention, when configuring the CSI-RS for configuring the mobility measurement parameter, a parameter value of a configuration parameter is generated from a sequence sent by the RRC signaling, and the parameter value is configured as a physical cell identifier of the cell; and determining the CSI-RS scrambling code sequence according to the sequence generation configuration parameter value.
As an example, before configuring the CSI-RS, the network management device may first determine whether to use the CSI-RS for mobility measurement, and under the condition of configuring the mobility measurement CSI-RS, may generate a parameter value of a configuration parameter from a sequence sent by an RRC signaling, configure the parameter value as a physical cell identifier of a cell, and determine n according to the sequence generated configuration parameter value ID Through n ID And determining an initial value of the CSI-RS sequence, thereby determining the CSI-RS scrambling code sequence.
For example, for n ID When the CSI-RS is used for configuring the mobility measurement, the network management system may configure the first cell n ID Is equal to the sequence Generation configuration, n, issued by RRC signaling ID The value may be 0-1023, with the default value of the sequence Generation configuration configured as the Physical Cell Identity (PCID) of the first Cell.
103, when the CSI-RS is configured for configuring non-zero power CSI-RS resource parameters, determining physical cell identification parameters of a cell corresponding to the base station, and determining a scrambling code sequence of the CSI-RS according to the scrambling code identification parameters and the physical cell identification parameters of the cell.
In the embodiment of the present invention, the ScramblingID may be configured in a non-zero power CSI-RS Resource parameter (NZP-CSI-RS-Resource IE).
The NZP CSI-RS Resource can be used as a measurement Channel to calculate CQI, precoding Matrix Indicator (PMI), RI equivalent, and report to a base station for Physical Downlink Shared Channel (PDSCH) transmission and Multiple-input Multiple-output (MIMO) Precoding used as Link Adaptation (Link Adaptation); or the method is used for calculating L1-RSRP and reporting the L1-RSRP to a base station for connection state beam management.
The NZP CSI-RS Resource can also be used as an interferometric Measurement (InterferenceMeasurement). For example, assuming one interfering transmission layer per CSI-RS port, the UE may accumulate interference measurements for all interfering layers.
As an example, when the CSI-RS is used to configure a non-zero power CSI-RS resource parameter, a physical cell identification parameter of a cell corresponding to the base station may be determined, and a scrambling code sequence of the CSI-RS may be determined according to the scrambling code identification parameter and the physical cell identification parameter of the cell.
In an embodiment of the present invention, when configuring the CSI-RS for configuring a non-zero power CSI-RS resource parameter, configuring a parameter value of a scrambling code identification parameter in the RRC signaling as a physical cell identifier of the cell; and determining the scrambling code sequence of the CSI-RS according to the parameter value of the scrambling code identification parameter.
As an example, if the CSI-RS is not used for configuring the mobility measurement parameters, it may be determined whether the CSI-RS is used for configuring the non-zero power CSI-RS resource parameters; if the parameter value is used for configuring the non-zero power CSI-RS resource parameter, the parameter value identified by the scrambling code in the RRC signaling can be configured as the physical cell identifier of the cell, and n is determined according to the parameter value identified by the scrambling code ID Through n ID And determining an initial value of the CSI-RS sequence, thereby determining the CSI-RS scrambling code sequence.
For example, for n ID When the CSI-RS is used for configuring the NZP-CSI-RS-Resource, the network management system can configure n of the first cell ID Equal to the Scambring ID, n issued by RRC signaling ID The value may be 0-1023, and the default value of the screening ID is configured as the physical cell ID of the first cell.
As a kind ofFor example, if the CSI-RS is used to configure zero power CSI-RS resource parameters, n may be used ID Directly configured as a physical cell identity of the cell.
For example, for n ID In other cases, or if the network has no configuration parameter value, the network management system may configure the default value of the first cell as the physical cell ID of the first cell.
In an embodiment of the present invention, CSI-RS measurement information sent by the base station is received, where the CSI-RS measurement information is information of the base station, where the ue measures a CSI-RS and reports the CSI-RS to the base station; judging whether the CSI-RS measurement information is abnormal or not; and reconfiguring the CSI-RS according to an abnormal condition.
As an example, zero-power or non-zero-power CSI-RS resources may be used for interference measurement. The UE can report the channel information obtained by measuring the CSI-RS resources and the interference information obtained by measuring the interference measurement resources to the base station in the form of RI/PMI/CQI, and the base station can use the RI/PMI/CQI form report information to send data to the UE. The base station may inform the UE to use the CSI-RS resource and the interference measurement resource for measurement through RRC signaling.
As an example, the UE may measure the CSI-RS, and report the measurement information of the CSI-RS to the terminal, and the base station may count the measurement information of the CSI-RS reported by the UE and send the measurement information to the network management device.
As an example, the network management device may receive measurement information of the CSI-RS, determine whether the measurement information of the CSI-RS is abnormal, and reconfigure the CSI-RS according to the abnormal condition.
In an embodiment of the present invention, the receiving CSI-RS measurement information sent by the base station includes: receiving reference signal power RSRP of CSI-RS of a first cell, RSRP of CSI-RS of a second cell, a first cell identifier, a second cell identifier, a precoding matrix PMI of the first cell and PMI information of the second cell which are measured by the user equipment in the process of moving from the first cell edge to the second cell; the determining whether the CSI-RS measurement information is abnormal includes: and judging whether the CSI-RS is abnormal or not according to the reference signal power RSRP of the CSI-RS of the first cell, the RSRP of the CSI-RS of the second cell, the precoding matrix PMI of the first cell and the PMI information of the second cell.
In an embodiment of the present invention, the Reference Signal Receiving Power (RSRP) is a linear average of Power contributions of resource elements carrying secondary synchronization signals within the considered measurement frequency bandwidth. The RSRP may be determined according to the secondary synchronization signal of 3GPP TS 38.211[4 ]. In addition to the secondary synchronization signal, the UE may also use a demodulation reference signal of the physical broadcast channel to determine RSRP.
The PMI can adaptively change a precoding matrix at a transmitting end according to the state information of the channel, and plays a role of changing the channel experienced by the signal.
As an example, the ue may measure channel state information of the first cell and the first cell neighboring cell, respectively, including a channel coefficient matrix, a signal-to-interference-and-noise ratio (SINR), channel rank information, and the like, and report the measured information in the form of a precoding matrix indicator PMI, a channel quality indicator CQI, a rank indicator RI, and the like.
As an example, in the process of moving from the first cell edge to the second cell, the user equipment may measure RSRP of the CSI-RS of the first cell, RSRP of the CSI-RS of the second cell, the first cell identifier, the second cell identifier, the precoding matrix PMI of the first cell, and PMI information of the second cell, and report the measured RSRP of the CSI-RS of the first cell, RSRP of the CSI-RS of the second cell, the first cell identifier, the second cell identifier, the precoding matrix PMI of the first cell, and PMI information of the second cell to the base station.
The base station can count information such as RSRP of the CSI-RS of the first cell, RSRP of the CSI-RS of the second cell, the first cell identifier, the second cell identifier, the precoding matrix PMI of the first cell, and the PMI of the second cell, and send the information to the network management equipment.
As an example, the network management device may determine whether the CSI-RS is abnormal according to reference signal power RSRP of the CSI-RS of the first cell, RSRP of the CSI-RS of the second cell, precoding matrix PMI of the first cell, and PMI information of the second cell.
As an example, whether the CSI reference signal is abnormal may be determined according to an RSRP preset threshold. For example, if the RSRP of the CSI reference signal is less than or equal to 105dBm, the CSI-RS coverage is poor, the service basically cannot be called, and it is determined that the CSI-RS is abnormal.
As an example, in the process that the ue moves from the first cell edge to the second cell, whether the CSI-RS is abnormal may be determined by determining whether the jitter amplitude of the precoding matrix PMI is greater than a preset jitter amplitude threshold.
In an embodiment of the present invention, the reconfiguring the CSI-RS according to the abnormal condition includes: counting the abnormal times of the CSI-RS in a preset period; determining whether the initial value of the CSI-RS scrambling code sequence of the first cell is the same as the initial value of the CSI-RS scrambling code sequence of the second cell or not according to the first cell identifier, the second cell identifier and the corresponding relation between the initial values of the cell identifiers and the CSI-RS scrambling code sequences under the condition that the abnormal times are larger than a preset abnormal times threshold value; and under the condition that the initial value of the CSI-RS scrambling code sequence of the first cell is the same as the initial value of the CSI-RS scrambling code sequence of the second cell, reconfiguring the CSI-RS.
As an example, the network management device may count the abnormal times of the CSI-RS in a preset period, and may determine whether the initial value of the CSI-RS scrambling sequence of the first cell is the same as the initial value of the CSI-RS scrambling sequence of the second cell according to the first cell identifier, the second cell identifier, and the corresponding relationship between the cell identifier and the initial value of the CSI-RS scrambling sequence when the abnormal times are greater than a preset abnormal times threshold; under the condition that the initial value of the CSI-RS scrambling code sequence of the first cell is the same as the initial value of the CSI-RS scrambling code sequence of the second cell, the network management equipment can reconfigure the CSI-RS until the abnormal times of the CSI-RS counted in the preset period by the network management equipment are less than or equal to the abnormal time threshold, and the process of configuring the CSI-RS is finished.
In the embodiment of the invention, RRC signaling sent by a base station is received, and a channel state information reference signal CSI-RS is configured according to the RRC signaling; the RRC signaling comprises a sequence generation configuration parameter and a scrambling code identification parameter; when the CSI-RS is configured for configuring the mobility measurement parameters, determining physical cell identification parameters of a cell corresponding to the base station, generating the configuration parameters and the physical cell identification parameters of the cell according to the sequences, and determining scrambling code sequences of the CSI-RS; when the CSI-RS is configured for configuring non-zero power CSI-RS resource parameters, determining physical cell identification parameters of a cell corresponding to the base station, and determining a scrambling code sequence of the CSI-RS according to the scrambling code identification parameters and the physical cell identification parameters of the cell; when the configuration of the CSI-RS is used for configuring a zero-power CSI-RS resource parameter, determining a physical cell identification parameter of a cell corresponding to the base station, and determining a scrambling code sequence of the CSI-RS according to the physical cell identification parameter of the cell; the scrambling sequence of the CSI-RS is used for scrambling data transmitted to the UE by the base station. When the CSI-RS is used in different scenes, different scrambling identification methods are explicitly considered, and different CSI-RS sequence generation schemes are planned for different cells, so that the possibility that the same sequence is sent by different cells is reduced.
It should be noted that for simplicity of description, the method embodiments are shown as a series of combinations of acts, but those skilled in the art will recognize that the embodiments are not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments. Further, those of skill in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the embodiments of the invention.
Referring to fig. 2, a block diagram of a configuration apparatus for parameters used for CSI-RS sequence scrambling according to an embodiment of the present invention is shown, and specifically includes the following modules:
a first receiving module 201, configured to receive a radio resource control RRC signaling sent by a base station, and configure a channel state information reference signal CSI-RS according to the RRC signaling; the RRC signaling comprises a sequence generation configuration parameter and a scrambling code identification parameter;
a first determining module 202, configured to determine a physical cell identifier parameter of a cell corresponding to the base station when the CSI-RS is configured for configuring a mobility measurement parameter, generate a configuration parameter and a physical cell identifier parameter of the cell according to the sequence, and determine a scrambling code sequence of the CSI-RS;
a second determining module 203, configured to determine a physical cell identifier parameter of a cell corresponding to the base station when the CSI-RS is configured for configuring a non-zero power CSI-RS resource parameter, and determine a scrambling code sequence of the CSI-RS according to the scrambling code identifier parameter and the physical cell identifier parameter of the cell;
a third determining module 204, configured to determine, when the CSI-RS is configured to configure a zero-power CSI-RS resource parameter, a physical cell identification parameter of a cell corresponding to the base station, and determine, according to the physical cell identification parameter of the cell, a scrambling code sequence of the CSI-RS; and the scrambling code sequence of the CSI-RS is used for scrambling data sent to the user equipment by the base station.
In an alternative embodiment, the first determining module 201 may include:
a first configuration sub-module, configured to, when configuring the CSI-RS for configuring a mobility measurement parameter, generate a parameter value of a configuration parameter from a sequence issued by the RRC signaling, and configure the parameter value as a physical cell identifier of the cell;
and the first determining submodule is used for determining the CSI-RS scrambling code sequence according to the sequence generation configuration parameter value.
In an alternative embodiment, the second determining module 202 may include:
a second configuration submodule, configured to configure a parameter value of a scrambling code identification parameter in the RRC signaling as a physical cell identification of the cell when the CSI-RS is configured to configure a non-zero power CSI-RS resource parameter;
and the second determining submodule is used for determining the scrambling code sequence of the CSI-RS according to the parameter value of the scrambling code identification parameter.
In an optional embodiment, the method may further include:
a second receiving module, configured to receive CSI-RS measurement information sent by the base station, where the CSI-RS measurement information is information of the base station, where the CSI-RS measurement information is obtained by measuring a CSI-RS by the user equipment and is reported to the base station;
the judging module is used for judging whether the CSI-RS measurement information is abnormal or not;
and the reconfiguration module is used for reconfiguring the CSI-RS according to an abnormal condition.
In an optional embodiment, the cell includes a first cell and a second cell, and the second section receiving module may include:
a second receiving submodule, configured to receive reference signal power RSRP of a CSI-RS of a first cell, RSRP of a CSI-RS of a second cell, a first cell identifier, a second cell identifier, a precoding matrix PMI of the first cell, and PMI information of the second cell, which are measured by the base station in a process of moving from the first cell edge to the second cell;
the judging module may include:
and the judging submodule is used for judging whether the CSI-RS is abnormal or not according to the reference signal power RSRP of the CSI-RS of the first cell, the RSRP of the CSI-RS of the second cell, the precoding matrix PMI of the first cell and the PMI information of the second cell.
In an alternative embodiment, the reconfiguration module may include:
the counting module is used for counting the abnormal times of the CSI-RS in a preset period;
a third determining submodule, configured to determine, when the abnormal number is greater than a preset abnormal number threshold, whether a CSI-RS scrambling code sequence initial value of the first cell is the same as a CSI-RS scrambling code sequence initial value of the second cell according to the first cell identifier, the second cell identifier, and a correspondence between the cell identifier and the CSI-RS scrambling code sequence initial value;
and the reconfiguration submodule is used for reconfiguring the CSI-RS under the condition that the initial value of the CSI-RS scrambling code sequence of the first cell is the same as the initial value of the CSI-RS scrambling code sequence of the second cell.
In the embodiment of the invention, RRC signaling sent by a base station is received, and a channel state information reference signal CSI-RS is configured according to the RRC signaling; the RRC signaling comprises a sequence generation configuration parameter and a scrambling code identification parameter; when the CSI-RS is configured for configuring the mobility measurement parameters, determining physical cell identification parameters of a cell corresponding to the base station, generating the configuration parameters and the physical cell identification parameters of the cell according to the sequences, and determining scrambling code sequences of the CSI-RS; when the CSI-RS is configured for configuring non-zero power CSI-RS resource parameters, determining physical cell identification parameters of a cell corresponding to the base station, and determining a scrambling code sequence of the CSI-RS according to the scrambling code identification parameters and the physical cell identification parameters of the cell; when the configuration of the CSI-RS is used for configuring a zero-power CSI-RS resource parameter, determining a physical cell identification parameter of a cell corresponding to the base station, and determining a scrambling code sequence of the CSI-RS according to the physical cell identification parameter of the cell; the scrambling sequence of the CSI-RS is used for scrambling data transmitted to the UE by the base station. When the CSI-RS is used in different scenes, different scrambling identification methods are explicitly considered, and different CSI-RS sequence generation schemes are planned for different cells, so that the possibility that the same sequence is sent by different cells is reduced.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
An embodiment of the present invention further provides an electronic device, including:
the parameter configuration method for CSI-RS sequence scrambling comprises a processor, a memory and a computer program which is stored in the memory and can run on the processor, wherein when the computer program is executed by the processor, each process of the parameter configuration method for CSI-RS sequence scrambling is realized, the same technical effect can be achieved, and the computer program is not repeated herein in order to avoid repetition.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above parameter configuration method for CSI-RS sequence scrambling, and can achieve the same technical effect, and is not described herein again to avoid repetition.
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, 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 terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, 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 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 terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal 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 the preferred embodiment and all changes and modifications that fall within the true scope of the embodiments of the present invention.
Finally, it should also be 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 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 terminal. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or terminal apparatus that comprises the element.
The above detailed description is provided for a parameter configuration method for CSI-RS sequence scrambling and a parameter configuration device for CSI-RS sequence scrambling provided by the present invention, and a specific example is applied in the present document to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A parameter configuration method for CSI-RS sequence scrambling is applied to network management equipment, and the method comprises the following steps:
receiving a Radio Resource Control (RRC) signaling sent by a base station, and configuring a channel state information reference signal (CSI-RS) according to the RRC signaling; the RRC signaling comprises a sequence generation configuration parameter and a scrambling code identification parameter;
when the CSI-RS is configured for configuring the mobility measurement parameters, determining physical cell identification parameters of a cell corresponding to the base station, generating configuration parameters and physical cell identification parameters of the cell according to the sequences, and determining scrambling code sequences of the CSI-RS;
when the CSI-RS is configured for configuring the mobility measurement parameters, determining physical cell identification parameters of a cell corresponding to the base station, generating configuration parameters and physical cell identification parameters of the cell according to the sequences, and determining scrambling code sequences of the CSI-RS;
when the CSI-RS is configured for configuring a zero-power CSI-RS resource parameter, determining a physical cell identification parameter of a cell corresponding to the base station, and determining a scrambling code sequence of the CSI-RS according to the physical cell identification parameter of the cell; and the scrambling code sequence of the CSI-RS is used for scrambling data sent to the user equipment by the base station.
2. The method of claim 1, wherein when configuring the CSI-RS for configuring mobility measurement parameters, determining a physical cell identity parameter of a cell corresponding to the base station, generating a configuration parameter and a physical cell identity parameter of the cell according to the sequence, and determining a scrambling sequence of the CSI-RS comprises:
when the CSI-RS is configured for configuring the mobility measurement parameters, generating parameter values of the configuration parameters by the sequence sent by the RRC signaling, and configuring the parameter values as the physical cell identification of the cell;
and determining the CSI-RS scrambling code sequence according to the sequence generation configuration parameter value.
3. The method of claim 2, wherein the determining a physical cell identity parameter of a cell corresponding to the base station when configuring the CSI-RS for configuring a non-zero power CSI-RS resource parameter, and determining a scrambling code sequence of the CSI-RS according to the scrambling code identity parameter and the physical cell identity parameter of the cell, comprises:
when the CSI-RS is configured for configuring non-zero power CSI-RS resource parameters, configuring parameter values of scrambling code identification parameters in the RRC signaling as physical cell identifications of the cells;
and determining the scrambling code sequence of the CSI-RS according to the parameter value of the scrambling code identification parameter.
4. The method of claim 1, further comprising:
receiving CSI-RS measurement information sent by the base station, wherein the CSI-RS measurement information is information of the base station, which is obtained by measuring a CSI-RS and reporting the CSI-RS to the base station;
judging whether the CSI-RS measurement information is abnormal or not;
and reconfiguring the CSI-RS according to an abnormal condition.
5. The method of claim 4, wherein the cells comprise a first cell and a second cell, and wherein the receiving the CSI-RS measurement information transmitted by the base station comprises:
receiving reference signal power RSRP of CSI-RS of a first cell, RSRP of CSI-RS of a second cell, a first cell identifier, a second cell identifier, a precoding matrix PMI of the first cell and PMI information of the second cell which are measured by the user equipment in the process of moving from the first cell edge to the second cell;
the determining whether the CSI-RS measurement information is abnormal includes:
and judging whether the CSI-RS is abnormal or not according to the reference signal power RSRP of the CSI-RS of the first cell, the RSRP of the CSI-RS of the second cell, the precoding matrix PMI of the first cell and the PMI information of the second cell.
6. The method of claim 5, wherein the reconfiguring the CSI-RS according to the abnormal condition comprises:
counting the abnormal times of the CSI-RS in a preset period;
determining whether the initial value of the CSI-RS scrambling code sequence of the first cell is the same as the initial value of the CSI-RS scrambling code sequence of the second cell or not according to the first cell identifier, the second cell identifier and the corresponding relation between the initial values of the cell identifiers and the CSI-RS scrambling code sequence when the abnormal times are larger than a preset abnormal times threshold value;
and under the condition that the initial value of the CSI-RS scrambling code sequence of the first cell is the same as the initial value of the CSI-RS scrambling code sequence of the second cell, reconfiguring the CSI-RS.
7. A parameter configuration device for CSI-RS sequence scrambling is applied to network management equipment, and the device comprises:
the first receiving module is used for receiving a Radio Resource Control (RRC) signaling sent by a base station and configuring a channel state information reference signal (CSI-RS) according to the RRC signaling; the RRC signaling comprises a sequence generation configuration parameter and a scrambling code identification parameter;
a first determining module, configured to determine a physical cell identifier parameter of a cell corresponding to the base station when the CSI-RS is configured for configuring a mobility measurement parameter, generate a configuration parameter and a physical cell identifier parameter of the cell according to the sequence, and determine a scrambling code sequence of the CSI-RS;
a second determining module, configured to determine a physical cell identity parameter of a cell corresponding to the base station when the CSI-RS is configured to configure a non-zero power CSI-RS resource parameter, and determine a scrambling code sequence of the CSI-RS according to the scrambling code identity parameter and the physical cell identity parameter of the cell;
a third determining module, configured to determine, when the CSI-RS is configured to configure a zero-power CSI-RS resource parameter, a physical cell identification parameter of a cell corresponding to the base station, and determine, according to the physical cell identification parameter of the cell, a scrambling code sequence of the CSI-RS; and the scrambling code sequence of the CSI-RS is used for scrambling data sent to the user equipment by the base station.
8. The apparatus of claim 7, wherein the first determining module comprises:
a first configuration sub-module, configured to, when configuring the CSI-RS for configuring a mobility measurement parameter, generate a parameter value of a configuration parameter from a sequence issued by the RRC signaling, and configure the parameter value as a physical cell identifier of the cell;
and the first determining submodule is used for determining the CSI-RS scrambling code sequence according to the sequence generation configuration parameter value.
9. An electronic device, comprising: processor, memory and computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the parameter configuration method for CSI-RS sequence scrambling according to any of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the parameter configuration method for CSI-RS sequence scrambling according to any of claims 1 to 7.
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| CN116321438A (en) * | 2023-04-03 | 2023-06-23 | 成都启庚科技有限公司 | Cell CRNTI planning method and device based on orthogonal scrambling codes |
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