CN111148144B

CN111148144B - RRM measurement method and device

Info

Publication number: CN111148144B
Application number: CN201811302671.8A
Authority: CN
Inventors: 缪德山; 郑方政
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-11-02
Filing date: 2018-11-02
Publication date: 2023-06-09
Anticipated expiration: 2038-11-02
Also published as: CN111148144A

Abstract

The invention provides an RRM measuring method and device, which are used for solving the technical problem of high power consumption of UE caused by poor RRM measuring flexibility in the prior art. The method comprises the following steps: in a measurement period, the UE performs RRM measurement on at least one downlink signal in a plurality of time windows to obtain a plurality of RRM measurement values; and the UE performs combination processing on the plurality of RRM measurement values to form a layer 1 RRM measurement result.

Description

RRM measurement method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for RRM measurement.

Background

In the current mobile communication system, a User Equipment (UE) needs to periodically measure a downlink signal to keep tracking on a network cell. Radio resource management (Radio Resource Management, RRM) measurements are used to support cell handover when the UE is in a radio resource control (Radio Resource Control, RRC) connected (connect) state, and RRM measurements are used to assist the UE in cell selection or reselection when the UE is in an RRC idle (idle) state.

However, in the prior art, no matter the UE is in rrc_connect or rrc_idle state, in a RRM measurement mode, in each measurement period, the UE performs RRM measurement in a time window of a fixed period based on a single downlink signal, which is not flexible enough, resulting in long RRM measurement time and large power consumption.

Disclosure of Invention

The invention provides an RRM measuring method and device, which are used for solving the technical problem of high power consumption of UE caused by poor RRM measuring flexibility in the prior art.

In a first aspect, an embodiment of the present invention provides a RRM measurement method, including:

in a measurement period, the UE performs RRM measurement on at least one downlink signal in a plurality of time windows to obtain a plurality of RRM measurement values; and the UE performs combination processing on the plurality of RRM measurement values to form a layer 1 RRM measurement result.

In the embodiment of the invention, the UE can carry out RRM measurement in a plurality of time windows based on at least one downlink signal in one measurement period, and compared with the mode that RRM measurement can only be carried out by adopting a single downlink signal in the prior art, the embodiment of the invention provides more types of downlink signals which can be selected as measurement objects to carry out RRM measurement, improves the flexibility of RRM measurement, reduces the RRM measurement time of the UE, and further saves the power consumption of the UE.

Optionally, the downlink signal includes one or more of a dedicated measurement reference signal, a channel state information reference signal CSI-RS, a data signal, a synchronization signal block SSB signal, and a demodulation reference signal DMRS.

The implementation mode of the signal source for the RRM measurement is provided, and the flexibility of the RRM measurement is improved.

Optionally, the UE performs RRM measurement on at least one downlink signal in a plurality of time windows, including:

the UE chooses to make multiple RRM measurements during the active time of one DRX cycle of discontinuous reception, or skip one DRX cycle during which RRM measurements are not made.

The combining and filtering of RRM measurement is relaxed in the time domain, and compared with the measurement by adopting a fixed period time window in the prior art, the method and the device can effectively reduce the power consumption caused by frequent awakening of the UE.

after receiving the wake-up signal, the UE determines the subsequent activation state to continuously perform multiple RRM measurements.

Optionally, the UE performs combining processing on the multiple RRM measurement values, including:

and combining RRM measured values of downlink signals in the same beam direction by the UE.

The embodiment can ensure the reliability of combining the RRM measured values, thereby improving the accuracy of the RRM measurement.

the UE weights each RRM measured value according to the sending power of a downlink signal corresponding to each RRM measured value in the plurality of RRM measured values;

and combining the weighted RRM measured values.

Optionally, before performing RRM measurement on at least one downlink signal in a plurality of time windows, the UE further includes:

the UE determines whether to reduce the number of RRM measurements in the one period, or reduce the number of neighbor cells requiring RRM measurements in the one period, or reduce the number of frequencies or carriers requiring RRM measurements in the one period, according to the RRM measurement result of the serving cell obtained in the previous measurement period or the RRM measurement result of the serving cell obtained by filtering the past multiple measurement periods.

The method and the device can flexibly adjust the number of RRM measurement times, the number of adjacent cells needing RRM measurement and the number of frequencies or carriers needing RRM measurement in one period of the UE, improve the flexibility of RRM measurement, reduce invalid measurement and save the power consumption of the UE.

Optionally, the measurement result of the serving cell includes an RSRP measurement value of the serving cell and/or an RSRQ measurement value of the serving cell.

According to the method and the device, the number of RRM measurement times, the number of neighbor cells needing RRM measurement or the number of frequencies needing RRM measurement in one period of the UE can be flexibly adjusted according to the RSRP and/or the RSRQ of the serving cell, so that the flexibility of RRM measurement is further improved, and the power consumption of the UE is saved.

according to a base station instruction or system convention, when the moving speed of the UE is lower than a preset threshold X or the UE determines to enter a low-power consumption measurement mode, a first neighbor cell list or a first inter-frequency measurement set is applied to carry out RRM measurement, and when the moving speed of the UE is higher than a preset threshold Y or the UE determines to enter a normal-power consumption measurement mode, a second neighbor cell list or a second inter-frequency measurement set is applied to carry out RRM measurement; the number of adjacent cells in the first adjacent cell list is smaller than that in the second adjacent cell list, the number of frequency points in the first inter-frequency measurement set is smaller than that in the second inter-frequency measurement set, and X is smaller than or equal to Y.

By the implementation mode, the neighbor cell list or the inter-frequency measurement set used by the RRM measurement can be flexibly selected according to the mobility of the UE, the flexibility of the RRM measurement is improved, and the power consumption of the UE is saved.

In a second aspect, an embodiment of the present invention provides an RRM measurement apparatus, including:

at least one processor, and

a memory communicatively coupled to the at least one processor, a communication interface;

wherein the memory stores instructions executable by the processor, the processor executing the following methods using the communication interface by executing the instructions stored by the memory:

performing RRM measurement on at least one downlink signal in a plurality of time windows in one measurement period to obtain a plurality of RRM measurement values;

and combining the plurality of RRM measurement values to form a layer 1 RRM measurement result.

Optionally, the downlink signal includes one or more of a dedicated measurement reference signal, CSI-RS, data signal, SSB signal, DMRS.

Optionally, the processor is specifically configured to:

the method comprises the steps of selecting to conduct multiple RRM measurements in the activation time of a Discontinuous Reception (DRX) period, or skipping a DRX period, and not conducting RRM measurements in the DRX period.

Optionally, the processor is specifically configured to:

after receiving the wake-up signal, the subsequent activation state is determined to be continuously measured for multiple RRM.

Optionally, the processor is specifically configured to:

the RRM measurements of the downstream signals in the same beam direction are combined.

Optionally, the processor is specifically configured to:

weighting each RRM measured value according to the transmission power of a downlink signal corresponding to each RRM measured value in the plurality of RRM measured values;

and combining the weighted RRM measured values.

Optionally, the processor is further configured to:

before performing RRM measurement on at least one downlink signal in a plurality of time windows, determining whether to reduce the number of RRM measurements in the one period, or reduce the number of neighbor cells requiring RRM measurement in the one period, or reduce the number of frequencies or carriers requiring RRM measurement in the one period, according to the RRM measurement result of the serving cell obtained in the previous measurement period or the RRM measurement result of the serving cell obtained by filtering in the past measurement periods.

Optionally, the processor is specifically configured to:

according to a base station instruction or system convention, when the moving speed of the device is lower than a preset threshold X or the device determines to enter a low-power consumption measurement mode, a first neighbor cell list or a first inter-frequency measurement set is used for RRM measurement, and when the moving speed of the device is higher than a preset threshold Y or the device determines to enter a normal-power consumption measurement mode, a second neighbor cell list or a second inter-frequency measurement set is used for RRM measurement; the number of adjacent cells in the first adjacent cell list is smaller than that in the second adjacent cell list, the number of frequency points in the first inter-frequency measurement set is smaller than that in the second inter-frequency measurement set, and X is smaller than or equal to Y.

In a third aspect, an embodiment of the present invention provides an RRM measurement apparatus, including:

a measurement unit, configured to perform RRM measurement on at least one downlink signal in a plurality of time windows in a measurement period, to obtain a plurality of RRM measurement values;

and the processing unit is used for combining the plurality of RRM measurement values to form a layer 1 RRM measurement result.

Optionally, the measuring unit is specifically configured to:

Optionally, the processor is specifically configured to:

Optionally, the processing unit is specifically configured to:

and combining the weighted RRM measured values.

Optionally, the measuring unit is further configured to:

Optionally, the measuring unit is specifically configured to:

In a fourth aspect, embodiments of the present invention provide a computer readable storage medium storing computer instructions that, when run on a computer, cause the computer to perform a method according to the first aspect or any alternative implementation of the first aspect of embodiments of the present invention.

One or more technical solutions provided in the embodiments of the present invention at least have the following technical effects or advantages:

Drawings

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

FIG. 1 is a schematic diagram of RRM measurement in the prior art;

fig. 2 is a flowchart of an RRM measurement method according to an embodiment of the present invention;

fig. 3 is a schematic diagram of one possible RRM measurement method according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of another possible RRM measurement method according to an embodiment of the present invention;

fig. 5 is a schematic diagram of another possible RRM measurement method according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an RRM measurement apparatus according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another RRM measurement apparatus according to an embodiment of the present invention.

Detailed Description

The following detailed description of the technical solutions of the present invention will be given by way of the accompanying drawings and specific embodiments, and it should be understood that the specific features of the embodiments and embodiments of the present invention are detailed descriptions of the technical solutions of the present invention, and not limiting the technical solutions of the present invention, and that the embodiments and technical features of the embodiments of the present invention may be combined with each other without conflict.

The embodiment of the invention can be applied to a 5G system; it is also applicable to other wireless communication systems, such as long term evolution (Long Term Evolution, LTE) systems, global system for mobile communications (Global System for Mobile Communication, GSM), mobile communication systems (Universal Mobile Telecommunications System, UMTS), code division multiple access (Code Division Multiple Access, CDMA) systems, and new network equipment systems.

The UE according to the embodiment of the present invention may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem. The wireless user terminals may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), which may be mobile terminals such as mobile phones (or "cellular" phones) and computers with mobile terminals, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDA) and the like. A wireless User Terminal may also be referred to as a system, subscriber Unit (Subscriber Unit), subscriber Station (Subscriber Station), mobile Station (Mobile Station), mobile Station (Mobile), remote Station (Remote Station), access Point (Access Point), remote Terminal (Remote Terminal), access Terminal (Access Terminal), user Terminal (User Terminal), user Agent (User Agent), user Device.

The base station according to the embodiments of the present invention may be configured to mutually convert a received air frame and an IP packet as a router between a wireless terminal device and the rest of an access network, where the rest of the access network may include an Internet Protocol (IP) network device. The base station may also coordinate attribute management for the air interface. For example, the base station may be a network device in a 5G system, a next generation base station (Next generation Node B, gNB), a base station (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile Communication, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a base station (NodeB) in wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA), or an evolved base station (evolutional Node B, eNB or e-NodeB) in LTE, which is not limited in the embodiments of the present invention.

It should be appreciated that in the description of embodiments of the invention, the words "first," "second," and the like are used merely for distinguishing between the descriptions and not for indicating or implying any relative importance or order. In the description of the embodiments of the present invention, "plurality" means two or more.

The term "and/or" in the embodiment of the present invention is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the existing mobile communication system, the period of RRM measurement is defined according to the accuracy and mobility of measurement, and belongs to static unchangeable, and the period of measurement report is network configurable. In a RRM measurement report, layer 1 and layer 3 filtering is usually required, that is, the UE performs a single measurement and cannot directly form a measurement report, which is mainly that a single measurement is performed in a very short time, but the fading period of the channel is relatively long, and multiple measurements are required to be performed in a complete channel fading period and layer 1 filtering is performed to obtain an accurate measurement report; meanwhile, in actual measurement, the measurement result is inaccurate due to noise, interference and fading, so that a measurement report needs to be obtained by multiple measurement averages, and then layer 3 filtering is needed to perform final signal averaging.

At present, the method for performing RRM measurement by the UE mainly includes the following two cases:

1 st:

when the UE is in rrc_connected state, the network may configure a synchronization signal block (Synchronization Signal Block, SSB) or a channel state information measurement reference signal (channel state information reference signal, CSI-RS) for RRM measurement. The UE may continuously measure the reference signal received power (reference signal receiving power, RSRP) or (Reference Signal Receiving Quality, reference signal received quality) RSRQ of the co-frequency neighbor cells as needed to obtain the signal quality of the neighbor cells when the UE is not configured in discontinuous reception mechanism (discontinuous reception, DRX) mode, the UE measurement period is 200ms. If the UE is in the DRX mode, the period measured by the RRM and the DRX cycle period have a corresponding relation. For measurement of the inter-frequency cell, the network side sends corresponding signaling to inform the UE whether the downlink signal of the frequency band different from the current cell needs to be measured. For layer 1 filtering, a measurement of 5 RRM samples is typically required to form one layer 1 RRM report. In this scenario, the characteristics of the channel and the movement characteristics of the user are not considered.

2 nd:

when the UE is in rrc_idle state, the UE can only rely on SSB signals for RRM measurements, since SSB is not present every time slot, which leads to measurement delay and extension of measurement time. Also in the RRCIDLE state, the serving cell always needs to measure, the measured period is related to the paging (page) period, i.e. to the DRX period in IDLE mode. When the signal strength of the serving cell is below a certain threshold, neighbor cell measurements are initiated. For inter-frequency cell measurements, corresponding measurements are required according to a network-defined priority list. In the RAN4 specification, it is specified that the terminal UE makes RRM measurements at least once per DRX cycle in IDLE mode, and the interval between two RRM measurements must be kept at 1/2DRX cycle length, while at least two RRM samples are required to filter to form one layer 1 RRM measurement report.

These requirements in DRX mode have a large impact on the power consumption of the UE, mainly in the following aspects: 1) Once every DRX cycle measurement forces the UE to wake up periodically even if no data arrives; 2) If the positions of the DRX and the SSB are not reasonably adapted, the UE needs to wake up for a plurality of times in one DRX period to finish RRM measurement and data reception; 3) The fixed measurement period and the number of measurements make the UE inflexible in RRM measurement, and the fixed measurement period and measurement steps must be maintained even though the moving speeds are different; 4) Sparse SSB configuration makes it impossible for the UE to obtain enough measurement samples within a specified time window, resulting in unnecessary measurement waiting.

For example, fig. 1 illustrates an example of RRM measurements in RRC-IDLE mode, where the problems with SSB location and DRX cycle mismatch are described. When the period of DRX is long, the UE cannot immediately perform RRM measurement when it wakes up from the DRX-OFF state, and needs to perform automatic gain control (Automatic Gain Control, AGC) to adjust the configuration of the receiver first, but there is an interval between two SSBs, so that at least two times of RRC measurement need to wake up, one for performing AGC adjustment, one for performing RRM measurement, and a time window of DRX-ON between the two measurements, and the UE needs to wake up, where the UE needs to consume a large power consumption to perform RRM measurement.

Based on the above analysis, in the prior art, no matter the UE is in rrc_connection or rrc_idle state, in one RRM measurement mode, in each measurement period, the UE performs RRM measurement in a plurality of time windows periodically distributed based on a single downlink signal. On the one hand, as the measurement object, namely the downlink signal is single, the UE can acquire multiple RRM measurement samples in a longer time to form a layer 1 measurement result, and the power consumption of the UE is high; on the other hand, the UE has no flexibility in the aspect of RRM measurement, the UE must wake up periodically to perform RRM measurement even if no data arrives based on time window measurement of a fixed period, and power consumption waste is caused; in addition, the suitability of RRM measurement is also poor, for example, when the UE moves at a low speed, the RRM measurement times, the configuration of measurement cells or measurement frequency bands, etc. and the mobility at a medium speed and a high speed are not changed, and in general, if the UE is in a fixed geographic location for a long period of time, too many neighboring cells are measured to be an inefficient act of wasting electric energy. Therefore, the technical problem of high power consumption of the UE caused by poor flexibility of RRM measurement in the prior art is solved.

In order to solve the technical problems in the prior art, an embodiment of the present invention provides an RRM measurement and apparatus. Referring to fig. 2, the RRM measurement method includes:

s101: in a measurement period, the UE performs RRM measurement on at least one downlink signal in a plurality of time windows to obtain a plurality of RRM measurement values;

the downlink signal may be one or more of a dedicated measurement reference signal, CSI-RS, data signal (DataSignal), SSB signal, and demodulation reference signal (demodulation reference signal, DMRS). Of course, in the implementation process, other types of signals can be selected as measurement signal sources according to actual requirements, and the embodiment of the invention is not particularly limited.

S102: and the UE performs combination processing on the plurality of RRM measurement values to form a layer 1 RRM measurement result.

In the embodiment of the invention, the UE can carry out RRM measurement in a plurality of time windows based on at least one downlink signal in one measurement period, and compared with the mode that RRM measurement can only be carried out by adopting a single downlink signal in the prior art, the embodiment of the invention provides more types of downlink signals which can be selected as measurement objects, improves the flexibility of RRM measurement, reduces the RRM measurement time of the UE, saves the power consumption of the UE and solves the technical problem that the power consumption of the UE is large due to poor RRM measurement flexibility in the prior art.

In one possible implementation, the RRM measurement of at least one downlink signal by the UE may be performed over multiple non-periodic time windows, i.e., the UE may perform RRM measurements over two or more time windows separated by any period of time. Specific implementations include, but are not limited to, the following two:

first kind: the UE selects to perform one or more continuous RRM measurements in the activation time of one Discontinuous Reception (DRX) period or skip one or more continuous DRX periods, and does not perform RRM measurements in the DRX period; second kind: after receiving the wake-up signal, the UE determines that the subsequent active state continuously performs one or more RRM measurements, and does not perform RRM measurements in the inactive state in which no wake-up signal is received.

When the UE performs multiple continuous RRM measurements, the measurement signal source may be a dedicated measurement reference signal configured by the network, or a mixed RRM measurement signal source is used, for example, a combination of at least two measurement signal sources of a dedicated measurement reference signal, CSI-RS, data signal, SSB signal, and DMRS is used.

Compared with the prior art that SSB signals with fixed periods are adopted for measurement, the method and the device effectively reduce power consumption caused by frequent awakening of the UE on the premise of guaranteeing the RRM measurement performance.

To further reduce invalid measurements and save UE power consumption, in a possible implementation manner, before performing RRM measurement on at least one downlink signal in a plurality of time windows, the UE may further determine, according to the RRM measurement result of the serving cell obtained in the previous measurement period or the RRM measurement result of the serving cell obtained by filtering in a plurality of measurement periods in the past, whether to reduce the number of RRM measurements in the one period, or reduce the number of neighbor cells that need RRM measurement in the one period, or reduce the frequency or the number of carriers that need RRM measurement in the one period.

For example, it is determined whether the RRM measurement result of the serving cell obtained in the previous measurement period is smaller than the first preset threshold, and if so, the number of RRM measurements in the one period is reduced, or the number of neighbor cells requiring RRM measurements in the one period is reduced, or the number of frequencies or carriers requiring RRM measurements in the one period is reduced.

For another example, comparing the RRM measurement result of the previous measurement period with the RRM measurement result of another measurement period before the previous measurement period, determining whether the change value of the RRM measurement result of the two times is smaller than the second preset threshold, if so, reducing the number of RRM measurements in the one period, or reducing the number of neighbor cells requiring RRM measurements in the one period, or reducing the number of frequencies or carriers requiring RRM measurements in the one period.

For another example, comparing the RRM measurement result of the previous measurement period with the maximum measurement result of the RRM measurement results of a plurality of measurement periods before the previous measurement period, determining whether the change value of the RRM measurement result of the previous measurement period compared with the maximum measurement result is smaller than a third preset threshold, if so, reducing the number of RRM measurements in the one period, or reducing the number of neighbor cells requiring RRM measurement in the one period, or reducing the number of frequencies or carriers requiring RRM measurement in the one period.

In an implementation, the measurement result of the serving cell may include an RSRP measurement value of the serving cell and/or an RSRQ measurement value of the serving cell.

According to the embodiment, the number of RRM measurement in one period of the UE can be adjusted according to the historical measurement result, or the number of neighbor cells requiring RRM measurement in the one period is reduced, or the number of frequencies requiring RRM measurement in the one period is reduced, so that the number of invalid measurement is further reduced, the flexibility of RRM measurement is improved, and the power consumption of the UE is saved.

In one possible implementation, when the UE performs RRM measurement on at least one downlink signal in multiple time windows, the neighbor cell list or the inter-frequency measurement set used when performing RRM measurement may also be determined based on mobility of the UE according to a base station indication or a system contract.

For example, the number of neighbor cells in the first neighbor cell list is less than the number of neighbor cells in the second neighbor cell list, and the number of frequency points in the first inter-frequency measurement set is less than the number of frequency points in the second inter-frequency measurement set. When the moving speed of the UE is lower than a preset threshold X or the UE determines to enter a low-power consumption measurement mode, a first neighbor cell list or a first inter-frequency measurement set is applied to carry out RRM measurement, and when the moving speed of the UE is higher than a preset threshold Y or the UE determines to enter a normal-power consumption measurement mode, a second neighbor cell list or a second inter-frequency measurement set is applied to carry out RRM measurement, wherein X is smaller than or equal to Y.

By the implementation mode, the neighbor cell list or the inter-frequency measurement set to be measured can be flexibly adjusted according to the mobility of the UE, the flexibility of RRM measurement is further improved, and the power consumption of the UE is saved.

In a possible implementation manner, the UE performs combining processing on the multiple RRM measurement values, including: and combining RRM measured values of downlink signals in the same beam direction by the UE.

In the implementation process, if the transmission power of the downlink signal corresponding to each RRM measurement value in the multiple RRM measurement values is the same, the multiple RRM measurement values may be directly combined; if the transmission power of the downlink signal corresponding to each RRM measurement value of the plurality of RRM measurement values is different, the respective RRM measurement values may be weighted according to the transmission power of the downlink signal corresponding to each RRM measurement value of the plurality of RRM measurement values, and then the weighted plurality of RRM measurement values may be combined.

By the implementation mode, the reliability of combining the RRM measured values can be ensured, so that the accuracy of the RRM measurement is improved.

In a possible implementation manner, the combining processing of the multiple measured values obtained by measuring different downlink signals may be performed within one RRM measurement window, or may be performed based on the measured values of multiple RRM measurement windows corresponding to different signal sources, where the specific implementation depends on the size of the measurement window, and embodiments of the present invention are not limited in particular.

The flexibility of RRM measurement is further improved by this embodiment.

In order to more clearly understand the technical solution of the embodiment of the present invention, the RRM measurement method of the present invention is described below by using several possible specific embodiments, and the following embodiments mainly describe possible implementation procedures of the RRM measurement method. It should be noted that the examples in the present invention are only for explaining the present invention, and are not intended to limit the present invention. All embodiments according to the inventive idea are within the scope of the invention, and a person skilled in the art will naturally know how to modify the inventive idea.

Example 1:

the UE in rrc_connect performs RRM measurements on various downlink signals.

Referring to fig. 3, when the UE is in RRC connected state and wakes up from DRX-OFF state into active period (activation period), the UE may perform RRM measurement based on all available downlink signals or select at least two of them to perform measurement in fig. 3, taking CSI-RS, DMRS and DataSignal as three examples.

If different downlink signals may employ different beams or different transmit powers, additional processing is required for RRM combining. The combination modes which can be adopted are as follows:

mode 1: for CSI-RS, DMRS and Data Signal configured by the beam with the same wave speed, the beam forming gain is the same as the beam direction, if the transmitting power is the same, the RRM measuring values of the three downlink signals can be directly combined;

mode 2: if the transmission power configurations of different downlink signals in the CSI-RS, DMRS and Data Signal are different, power weighting is required for RRM measurement values corresponding to the different downlink signals.

The specific implementation mode can be as follows: selecting a measured value of a signal source from received RRM measured values as a reference value, and if the transmission power of the signal sources corresponding to each measured value is different, adding or subtracting an offset value on the basis of the RRM measured values to be combined by taking the reference value as a reference point to carry out the combination of the RRM measured values;

Mode 3: if different Signal sources in the CSI-RS and DMRS and Data Signal have different transmission bandwidths, the transmission power needs to be calculated.

The specific implementation mode can be as follows: total power = power per resource unit (RE) number of subcarriers of the signal, weighting the measurement signals of different bandwidths with a common transmission power as a reference, where the weighting is aimed at making the signal source transmitting ends with combining have the same power, so that the power of the received signal needs to be amplified or reduced, and then the RRM measurement values of different signal sources are combined.

Example 2:

the UE in rrc_idle performs RRM measurements on various downlink signals.

Referring to fig. 4, when the UE is in RRC-IDLE state and wakes up from DRX-OFF state, RRM Measurement may be performed based on all available downlink signals or at least two downlink signals, and combined, taking SSB and Measurement dedicated pilot (Measurement RS) (i.e., the dedicated Measurement reference signal described above) as an example in fig. 4.

Because the UE is in the RRC IDLE state at this time, the SSB signal is sent in a beam scanning manner, and the dedicated measurement RS needs to be sent in a scanning manner by using the same beam, so that the beamforming gain of the signal can be kept similar, and RRM measurement values of different downlink signals are combined.

Accordingly, if the transmission power of the different downlink signals is different, the signals with different powers need to be weighted, and the specific implementation manner may refer to the combining manner adopted in the foregoing embodiment 2, which is not described herein again.

Through the embodiment, the UE can carry out RRM measurement based on various downlink signals, can improve RRM measurement accuracy, reduce RRM measurement time and save power consumption of the UE.

Example 3:

the UE ignores a specific DRX period to carry out RRM measurement, and combines RRM measurement values obtained at any time interval.

In order to further reduce the power consumption of the UE, the UE must be in a sleep state as much as possible, and the number of wake-up times of the UE is reduced. Referring to fig. 5, RRM measurements of the ue may be unequal at each DRX-ON time window. The main reason is that some DRX-ON windows have data transmission, so that multiple RRM measurements can be performed, some DRX-ON windows have no data transmission, and if a wake-up signal is configured, the UE can even perform RRM measurements without waking up. By means of the non-uniform RRM measurement in time, the UE can be prevented from being frequently awakened, and power consumption of the UE is further saved.

In specific implementation, the following cases can be treated:

1) The UE may perform multiple RRM measurements when the UE is receiving a wake-up signal, or is ready to receive a data signal, or is ready to receive a page signal and enter an active state, and the measurement downlink signal may be a dedicated measurement reference signal configured by the network, or may be a downlink signal measured using multiple RRMs mixed, without limitation.

2) When the UE is DRX-OFF, the base station may limit RRM measurements of the UE and may stay in a sleep state all the time. The combining or filtering of RRM measurements at this time may be mainly concentrated in RRM measurements of DRX-ON, and the UE may not make RRM measurements in the corresponding DRX cycle when there is no wake-up or no data/paging signal for the UE.

According to the embodiment, when the UE enters an activated state after receiving the wake-up signal or when data detection and reception are carried out in the DRX-ON, continuous multiple RRM measurement is carried out based ON a special measurement reference signal or other downlink signals configured by the base station, and RRM measurement is not carried out at other times, so that combined filtering of the RRM measurement is relaxed in a time domain, and power consumption caused by frequent wake-up of the UE is reduced.

Referring to fig. 6, based on the same inventive concept, an embodiment of the present invention further provides an RRM measurement apparatus, including:

At least one processor 201, and

a memory 202 communicatively coupled to the at least one processor 201, a communication interface 203;

wherein the memory 202 stores instructions executable by the processor 201, and the processor 201 performs the following method using the communication interface 203 by executing the instructions stored in the memory 202:

Optionally, the processor 201 is specifically configured to:

and combining the weighted RRM measured values.

Optionally, the processor 201 is further configured to:

Optionally, the processor 201 is specifically configured to:

The method and the device according to the present invention are based on the same inventive concept, and because the principles of solving the problems by the method and the device are similar, the specific implementation manner of the operations performed by the processor 201 may refer to the corresponding steps in the RRM measurement method according to the embodiment of the present invention, so that the implementation of the device and the method may refer to each other, and the repetition is not repeated.

Referring to fig. 7, based on the same inventive concept, an embodiment of the present invention further provides an RRM measurement apparatus, including:

a measurement unit 301, configured to perform RRM measurement on at least one downlink signal in a plurality of time windows in a measurement period, to obtain a plurality of RRM measurement values;

a processing unit 302, configured to combine the multiple RRM measurement values to form a layer 1 RRM measurement result.

Optionally, the measuring unit 301 is specifically configured to:

Optionally, the processor is specifically configured to:

Optionally, the processing unit 302 is specifically configured to:

and combining the weighted RRM measured values.

Optionally, the measuring unit 301 is further configured to:

Optionally, the measuring unit 301 is specifically configured to:

The method and the device are based on the same inventive concept, and because the principles of solving the problems by the method and the device are similar, the specific implementation manner of the operations performed by the units can refer to the corresponding steps in the RRM measurement method in the embodiment of the invention, so that the implementation of the device and the method can refer to each other, and the repetition is not repeated.

Based on the same inventive concept, the embodiments of the present invention also provide a computer-readable storage medium storing computer instructions that, when executed on a computer, cause the computer to perform the RRM measurement method according to the embodiments of the present invention.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, 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, 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.

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

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A radio resource management, RRM, measurement method, the method comprising:

in one measurement period, the UE performs RRM measurement on various downlink signals in a plurality of time windows to obtain a plurality of RRM measurement values;

and the UE performs combination processing on the plurality of RRM measurement values to form a layer 1 RRM measurement result.

2. The method of claim 1, wherein the downlink signals comprise one or more of dedicated measurement reference signals, channel state information measurement reference signals CSI-RS, data signals, synchronization signal block SSB signals, demodulation reference signals DMRS.

3. The method of claim 1, wherein the UE performs RRM measurements for a plurality of downlink signals over a plurality of time windows, comprising:

4. The method of claim 1, wherein the UE performs RRM measurements for a plurality of downlink signals over a plurality of time windows, comprising:

5. The method of claim 1, wherein the UE performs combining processing on the plurality of RRM measurements, comprising:

6. The method of claim 5, wherein the UE performs combining of the plurality of RRM measurements, comprising:

and combining the weighted RRM measured values.

7. The method of any of claims 1-6, wherein the UE further comprises, prior to RRM measurements for multiple downlink signals over multiple time windows:

8. The method of claim 7, wherein the measurement result of the serving cell comprises a reference signal received power, RSRP, measurement of the serving cell and/or a reference signal received quality, RSRQ, measurement of the serving cell.

9. The method of any of claims 1-6, wherein the UE performs RRM measurements for a plurality of downlink signals over a plurality of time windows, comprising:

10. An RRM measurement apparatus, the apparatus comprising:

At least one processor, and

performing RRM measurement on various downlink signals in a plurality of time windows in one measurement period to obtain a plurality of RRM measurement values;

11. The apparatus of claim 10, wherein the downlink signals comprise one or more of dedicated measurement reference signals, CSI-RS, data signals, SSB signals, DMRS.

12. The apparatus of claim 10, wherein the processor is specifically configured to:

13. The apparatus of claim 10, wherein the processor is specifically configured to:

14. The apparatus of claim 10, wherein the processor is specifically configured to:

15. The apparatus of claim 14, wherein the processor is specifically configured to:

and combining the weighted RRM measured values.

16. The apparatus of any of claims 10-15, wherein the processor is further configured to:

before performing RRM measurement on a plurality of downlink signals in a plurality of time windows, determining whether to reduce the number of RRM measurements in one period, or reduce the number of neighbor cells requiring RRM measurement in the one period, or reduce the number of frequencies or carriers requiring RRM measurement in the one period, according to the RRM measurement result of the serving cell obtained in the previous measurement period or the RRM measurement result of the serving cell obtained by filtering in the past plurality of measurement periods.

17. The apparatus of claim 16, wherein the measurement result of the serving cell comprises an RSRP measurement of the serving cell and/or an RSRQ measurement of the serving cell.

18. The apparatus according to any of claims 10-15, wherein the processor is specifically configured to:

19. An RRM measurement apparatus, comprising:

the measuring unit is used for carrying out RRM measurement on various downlink signals in a plurality of time windows in one measuring period to obtain a plurality of RRM measured values;

20. A computer-readable storage medium, characterized by:

the computer readable storage medium stores computer instructions which, when run on a computer, cause the computer to perform the method of any of claims 1-9.