CN113271624B

CN113271624B - Cell measurement method, device and equipment

Info

Publication number: CN113271624B
Application number: CN202110668662.6A
Authority: CN
Inventors: 张锦辉
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-11-01
Anticipated expiration: 2041-06-16
Also published as: CN113271624A

Abstract

The application provides a cell measurement method, a device and equipment, wherein terminal equipment measures an SSB of a serving cell to obtain an SSB measurement value of the serving cell, measures the SSB of a neighbor cell to obtain a first SSB measurement value of the neighbor cell, measures a PDSCH of the serving cell to obtain a PDSCH measurement value of the serving cell, adjusts the first SSB measurement value of the neighbor cell to obtain a second SSB measurement value of the neighbor cell if the PDSCH measurement value is greater than or equal to a first preset threshold value, and sends the SSB measurement value of the serving cell and the second SSB measurement value of the neighbor cell to network equipment, wherein the second SSB measurement value of the neighbor cell is smaller than the first SSB measurement value of the neighbor cell. Through the above process, under the condition that the PDSCH channel quality of the serving cell is good, the terminal device may report a lower SSB measurement value of the neighboring cell to the network device, so that the network device may be prevented from initiating handover as much as possible, thereby preventing the terminal device from being handed over to a cell with poorer performance.

Description

Cell measurement method, device and equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a cell measurement method, apparatus, and device.

Background

Mobility management is an important component of wireless mobile communications and needs to be performed based on the measurement results of mobility measurements.

Mobility measurements in new wireless (new radio, NR) systems are based on synchronization signal/physical broadcast channel block (SSB) measurements. Specifically, under the condition that the terminal device is in the connected state, the terminal device measures the SSB of the serving cell and the SSB of the neighboring cell, respectively, to obtain an SSB measurement value of the serving cell and an SSB measurement value of the neighboring cell. And the terminal equipment reports the SSB measurement value of the service cell and the SSB measurement value of the adjacent cell to the network equipment. And then, the network equipment determines whether to initiate a switching process to the terminal equipment according to the SSB measured value of the service cell and the SSB measured value of the adjacent cell. Illustratively, if the SSB measurement value of a certain neighboring cell is better than the SSB measurement value of the serving cell, a handover procedure is initiated, so that the terminal device is handed over to the neighboring cell.

However, the above procedure may result in the terminal device being handed over to a cell with poorer performance.

Disclosure of Invention

The application provides a cell measurement method, a cell measurement device and cell measurement equipment, which are used for avoiding switching of terminal equipment to a cell with poorer performance.

In a first aspect, the present application provides a cell measurement method, including:

measuring a synchronous signal and a physical broadcast channel block (SSB) of a serving cell to obtain an SSB measurement value of the serving cell, and measuring an SSB of a neighboring cell to obtain a first SSB measurement value of the neighboring cell;

measuring a Physical Downlink Shared Channel (PDSCH) of the serving cell to obtain a PDSCH measured value of the serving cell;

if the PDSCH measured value is greater than or equal to a first preset threshold value, adjusting a first SSB measured value of the adjacent cell to obtain a second SSB measured value of the adjacent cell, wherein the second SSB measured value of the adjacent cell is smaller than the first SSB measured value of the adjacent cell;

and sending the SSB measurement value of the service cell and the second SSB measurement value of the neighboring cell to network equipment.

In a possible implementation manner, adjusting the first SSB measurement value of the neighboring cell to obtain the second SSB measurement value of the neighboring cell includes:

and adjusting the first SSB measurement value of the adjacent cell according to the PDSCH measurement value to obtain a second SSB measurement value of the adjacent cell.

In a possible implementation manner, adjusting the first SSB measurement value of the neighboring cell according to the PDSCH measurement value to obtain the second SSB measurement value of the neighboring cell includes:

determining a target adjustment value according to the PDSCH measurement value;

and determining the difference between the first SSB measurement value of the adjacent cell and the target adjustment value as a second SSB measurement value of the adjacent cell.

In one possible implementation, determining a target adjustment value according to the PDSCH measurement value includes:

acquiring a plurality of preset measurement value ranges, wherein each measurement value range corresponds to an adjustment value;

determining a target measurement range from the plurality of measurement ranges based on the PDSCH measurements, the PDSCH measurements being within the target measurement range;

and determining the adjustment value corresponding to the target measurement value range as the target adjustment value.

In a possible implementation manner, measuring the SSB of the serving cell to obtain an SSB measurement value of the serving cell includes:

measuring the SSB of the service cell for at least two periods to obtain a measurement value of each period corresponding to the service cell;

and filtering the at least two periods of measurement values corresponding to the serving cell to obtain the SSB measurement value of the serving cell.

In a possible implementation manner, measuring an SSB of a neighboring cell to obtain a first SSB measurement value of the neighboring cell includes:

measuring the SSB of the adjacent cell for at least two periods to obtain a measured value of each period corresponding to the adjacent cell;

and filtering the at least two periods of measurement values corresponding to the adjacent cell to obtain a first SSB measurement value of the adjacent cell.

In a possible implementation manner, the method is applied to a terminal device, and measures a PDSCH of the serving cell to obtain a PDSCH measurement value of the serving cell, and includes:

determining whether the ongoing service type of the terminal equipment is a preset service type;

and if the ongoing service type of the terminal equipment is the preset service type, measuring the PDSCH of the serving cell to obtain the PDSCH measured value of the serving cell.

In a possible implementation manner, determining whether the ongoing service type of the terminal device is a preset service type includes:

acquiring the size of a data transmission block corresponding to the terminal equipment;

if the size of the data transmission block is larger than or equal to a second preset threshold value, determining that the ongoing service type of the terminal equipment is the preset service type;

and if the size of the data transmission block is smaller than the second preset threshold, determining that the ongoing service type of the terminal equipment is not the preset service type.

In a possible implementation, the method further includes:

and if the ongoing service type of the terminal equipment is not the preset service type, sending the SSB measurement value of the service cell and the first SSB measurement value of the adjacent cell to the network equipment.

In a possible implementation, the method further includes:

and if the PDSCH measurement value is smaller than the first preset threshold value, sending the SSB measurement value of the serving cell and the first SSB measurement value of the neighboring cell to the network equipment.

In a second aspect, the present application provides a cell measurement apparatus, including:

a first measurement module, configured to measure a synchronization signal and a physical broadcast channel block SSB of a serving cell to obtain an SSB measurement value of the serving cell, and measure an SSB of a neighboring cell to obtain a first SSB measurement value of the neighboring cell;

a second measurement module, configured to measure a PDSCH of the serving cell to obtain a PDSCH measurement value of the serving cell;

a processing module, configured to adjust a first SSB measurement value of the neighboring cell if the PDSCH measurement value is greater than or equal to a first preset threshold, to obtain a second SSB measurement value of the neighboring cell, where the second SSB measurement value of the neighboring cell is smaller than the first SSB measurement value of the neighboring cell;

a sending module, configured to send the SSB measurement value of the serving cell and the second SSB measurement value of the neighboring cell to a network device.

In a possible implementation manner, the processing module is specifically configured to:

determining a target adjustment value according to the PDSCH measurement value;

and determining an adjustment value corresponding to the target measurement value range as the target adjustment value.

In a possible implementation manner, the first measurement module is specifically configured to:

and filtering the measured values of the at least two periods corresponding to the adjacent cell to obtain a first SSB measured value of the adjacent cell.

In a possible implementation manner, the apparatus is applied to a terminal device, and the second measurement module is specifically configured to:

In a possible implementation manner, the second measurement module is specifically configured to:

In a possible implementation manner, the sending module is further configured to:

In a third aspect, the present application provides a terminal device, including: a transceiver, a processor, a memory;

the memory stores computer executable instructions which, when executed by the processor, implement the method of any one of the first aspects.

In a fourth aspect, the present application provides a computer-readable storage medium having stored thereon computer-executable instructions that, when executed by a processor, implement the method according to any one of the first aspect.

In a fifth aspect, the present application provides a computer program product comprising a computer program which, when executed by a processor, implements the method according to any one of the first aspect.

According to the cell measurement method, the cell measurement device and the cell measurement equipment, the terminal equipment measures the SSB of the serving cell to obtain the SSB measurement value of the serving cell, measures the SSB of the neighbor cell to obtain the first SSB measurement value of the neighbor cell, measures the PDSCH of the serving cell to obtain the PDSCH measurement value of the serving cell, adjusts the first SSB measurement value of the neighbor cell to obtain the second SSB measurement value of the neighbor cell if the PDSCH measurement value is greater than or equal to the first preset threshold value, and sends the SSB measurement value of the serving cell and the second SSB measurement value of the neighbor cell to the network equipment, wherein the second SSB measurement value of the neighbor cell is smaller than the first SSB measurement value of the neighbor cell. Through the above process, under the condition that the PDSCH channel quality of the serving cell is good, the terminal device may report a lower SSB measurement value of the neighboring cell to the network device, so that the network device may be prevented from initiating handover as much as possible, and the terminal device is thereby left in the current serving cell to prevent handover to a cell with poorer performance.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic diagram of a communication system to which embodiments of the present application are applicable;

fig. 2 is a diagram illustrating a cell measurement procedure in the related art;

FIG. 3 is a schematic representation of SSB in an embodiment of the present application;

fig. 4 is a schematic time-frequency location diagram of an SSB and a PDSCH provided in the embodiment of the present application;

fig. 5 is a flowchart illustrating a cell measurement method according to an embodiment of the present application;

fig. 6 is a schematic diagram illustrating adjusting a measured value of a neighbor cell SSB according to a PDSCH measured value according to an embodiment of the present application;

fig. 7 is a flowchart illustrating another cell measurement method according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a cell measurement apparatus according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings (if any) are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a schematic diagram of a communication system to which an embodiment of the present invention is applicable. As shown in fig. 1, the communication system 100 may include: network device 110 and terminal device 120. It is understood that the communication system 100 may include a plurality of network devices and each network device may include other numbers of terminal devices within the coverage area, which is not limited in the embodiments of the present application.

Network device 110 may be a device that communicates with terminal device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area.

The communication system 100 may be a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an advanced long term evolution (LTE-a) system, a new radio (new radio), NR) system, an evolution system of the NR system, an LTE (LTE-based access to unlicensed spectrum, LTE-U) system on an unlicensed frequency band, an NR (NR-based access to unlicensed spectrum, NR-U) system on an unlicensed frequency band, a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a Wireless Local Area Network (WLAN), a wireless fidelity (WiFi), a next-generation communication system, or other communication systems.

Alternatively, the NR system may also be referred to as a 5G system or a 5G network.

Generally, conventional communication systems support a limited number of connections and are easy to implement, however, with the development of communication technology, mobile communication systems will support not only conventional communication, but also, for example, device to device (D2D) communication, machine to machine (M2M) communication, machine Type Communication (MTC), and vehicle to vehicle (V2V) communication, and the embodiments of the present application can also be applied to these communication systems.

Alternatively, the network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a base station (nodeB) in a WCDMA system, an evolved node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or a network device in a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

When the communication system is AN NR system, the network device 110 may be a (radio access network (R) AN device in the NR system, and the (R) AN device in the NR system may be: non-3 GPP access networks such as Access Points (APs) of a WiFi network, next generation base stations (which may be collectively referred to as a new generation radio access network node (NG-RAN node), where the next generation base stations include a new air interface base station (NR node b, gNB), a new generation evolved node b (NG-eNB), a Central Unit (CU), a Distributed Unit (DU), a gNB in a separate form, etc.), new radio controllers (NR controllers), radio remote modules, micro base stations, relays (relays), transceiver points (TRPs), transmission Points (TPs), or other nodes.

The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices. For convenience of description, in all embodiments of the present application, the above-mentioned apparatus for providing a wireless communication function for a terminal device is collectively referred to as a network device.

In the embodiment of the present application, the terminal device 120 may be any terminal, for example, the terminal device 120 may be a user equipment for machine type communication. The terminal device 120 may also be referred to as a User Equipment (UE), a Mobile Station (MS), a mobile terminal (mobile terminal), a terminal (terminal), etc.

The terminal device 120 may communicate with one or more core networks via the RAN, and thus, the terminal device 120 may also be referred to as a wireless terminal, which may be a device that provides voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem.

For example, the terminal device 120 may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device or a wearable device, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (security), a wireless terminal in city smart terminal, a home wireless terminal in city, and the like. The embodiments of the present application are not particularly limited.

As another example, end device 120 includes, but is not limited to, connections via wireline, such as via a Public Switched Telephone Network (PSTN), digital Subscriber Line (DSL), digital cable, direct cable connection; and/or another data connection/network; and/or via a wireless interface, e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or internet of things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver.

Alternatively, the network device 110 and the terminal device 120 may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; can also be deployed on the water surface; it may also be deployed on airborne airplanes, balloons, and satellite vehicles. The embodiments of the present application do not limit application scenarios of the network device 110 and the terminal device 120.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

Mobility management is an important component of wireless mobile communications. Mobility management needs to be performed based on the measurement results of the mobility measurements. In connection with the communication system shown in fig. 1, it is assumed that the terminal device accesses a cell of the first network device, which is referred to as a serving cell. When the terminal device is in a connected state and moves from the coverage of the serving cell to the coverage of another cell, the communication system may transfer the communication link between the terminal device and the original cell to a new cell in order to ensure the continuity and quality of communication between the terminal device and the other cell. The new cell may be another cell of the first network device or may be a cell of another network device. The above process is called handover.

In the NR communication system, when a terminal device is in a connected state, it is necessary to switch between synchronization signals and measurement results of a physical broadcast channel block (SSB) based on the terminal device. A cell measurement procedure in the related art will be described with reference to fig. 2.

Fig. 2 is a schematic diagram of a cell measurement process in the related art. As shown in fig. 2, the cell measurement procedure includes:

s201: the terminal device measures the SSB of the serving cell and the SSB of the neighboring cell respectively to obtain the SSB measurement value of the serving cell and the SSB measurement value of the neighboring cell.

S202: and the terminal equipment sends the SSB measurement value of the service cell and the SSB measurement value of the adjacent cell to the network equipment.

S203: and the network equipment determines whether to initiate a switching process to the terminal equipment or not according to the SSB measured value of the service cell and the SSB measured value of the adjacent cell.

Specifically, the network device may determine whether to initiate the handover procedure according to any one of the following events.

Event A1: the serving cell quality is above the absolute threshold.

An A2 event: the serving cell quality is below the absolute threshold.

Event A3: the quality of the neighboring cell is better than the quality of the serving cell.

Event A4: the quality of the neighborhood is better than the absolute threshold.

Event A5: the serving cell quality is above a first absolute threshold and the neighbor cell quality is above a second absolute threshold.

Event A6: the quality of the adjacent cell is better than that of the auxiliary cell.

Taking an A3 event as an example, the network device determines whether a trigger condition of the A3 event is satisfied according to the received SSB measurement value of the serving cell and the SSB measurement value of the neighboring cell, and if so, initiates a handover procedure. For example, if the network device determines that the SSB measurement value of the neighboring cell is higher than the SSB measurement value of the serving cell, a handover procedure is initiated for the terminal device.

It should be noted that the handover triggering procedure of other events is similar to the A3 event, and is not illustrated here.

However, in practical applications, the above handover process may cause the terminal device to handover to a cell with poorer performance, and even cause a network drop after the terminal device is handed over.

The inventor analyzes the above problems and finds that the measurement results (i.e., the SSB measurement value of the serving cell and the SSB measurement value of the neighboring cell) reported by the terminal device to the network device cannot accurately reflect the real channel quality of the Physical Downlink Shared Channel (PDSCH) in the serving cell and the neighboring cell. The following analysis is described with reference to fig. 3 and 4.

FIG. 3 is a schematic representation of SSB in an embodiment of the present application. As shown in fig. 3, the SSB includes: primary Synchronization Signals (PSS), secondary Synchronization Signals (SSS), and Physical Broadcast Channel (PBCH). One SSB occupies 4 Orthogonal Frequency Division Multiplexing (OFDM) symbols in the time domain and 20 Resource Blocks (RBs) in the frequency domain.

Fig. 4 is a schematic time-frequency location diagram of an SSB and a PDSCH provided in the embodiment of the present application. As shown in fig. 4, the SSB exists periodically in the NR system, and the period of the SSB may be 20ms, 80ms, or the like, for example. Taking the maximum bandwidth 100M supported by the bandwidth part (BWP) of NR as an example, the maximum bandwidth corresponds to 273 RBs, while SSB occupies only the middle 20 RBs in the frequency domain. The time-frequency resource occupied by the PDSCH is dynamically scheduled by the network equipment. Therefore, in practical applications, the PDSCH and the SSB may occupy unused OFDM symbols in the time domain, and may occupy different RBs in the frequency domain. The measurement result of the terminal device on the SSB can only reflect the channel quality of the SSB, but cannot accurately reflect the true channel quality of the PDSCH.

For example, in some scenarios, referring to fig. 4, interference exists in the time-frequency resources occupied by the SSB, and the measured value of the SSB of the serving cell by the terminal device is poor, while actually, interference may not exist in the time-frequency resources occupied by the PDSCH, that is, the channel quality of the PDSCH is good. It can be seen that when the SSB measurement is poor, it does not indicate that the PDSCH channel quality is poor.

For another example, in some scenarios, the time-frequency resource where the SSB is located does not have interference, the terminal device has a better measurement value for the SSB of the serving cell, and actually, the time-frequency resource where the PDSCH is located may have interference. It can be seen that when the SSB measurement is good, it does not indicate that the PDSCH channel quality is good.

Based on the above analysis, since the measurement result of the SSB by the terminal device can only reflect the channel quality of the SSB, but cannot accurately reflect the real channel quality of the PDSCH, in the handover process, the network device makes a handover decision according to the SSB measurement value of the serving cell and the SSB measurement value of the neighboring cell, which may cause the terminal device to handover to a cell with poorer performance. Especially in a scenario that the terminal device is performing large data transmission, blind handover may cause a decrease in transmission rate of the terminal device, and even cause a network drop after handover of the terminal device.

In order to solve the foregoing technical problem, embodiments of the present application provide a cell measurement method, apparatus, and device. In the technical scheme of the application, the terminal device can reduce the SSB measurement value of the neighboring cell reported to the network device under the condition that the PDSCH channel quality of the serving cell is good, so as to avoid the network device from initiating a handover procedure as much as possible, thereby ensuring that the terminal device is maintained in the cell with good performance as much as possible.

The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 5 is a flowchart illustrating a cell measurement method according to an embodiment of the present application. The method of the present embodiment may be performed by a terminal device. As shown in fig. 5, the method of this embodiment includes:

s501: the method comprises the steps of measuring an SSB of a service cell to obtain an SSB measurement value of the service cell, and measuring an SSB of a neighboring cell to obtain a first SSB measurement value of the neighboring cell.

In this embodiment, the SSB measurement value may include one or more of the following: an SSB signal to noise ratio (SNR) measurement, an SSB Reference Signal Received Power (RSRP) measurement, and an SSB Reference Signal Received Quality (RSRQ) measurement. The higher the SSB measurement, the better the channel quality corresponding to the SSB.

For example, the terminal device may perform SNR measurement on the SSB of the serving cell while in the connected state, and obtain an SSB SNR measurement value of the serving cell. The terminal device may perform RSRP measurement on the SSB of the serving cell to obtain an SSB RSRP measurement value of the serving cell. The terminal device may perform RSRQ measurement on the SSB of the serving cell to obtain an SSB RSRQ measurement value of the serving cell.

Illustratively, the terminal device may perform SNR measurement on the SSB of the neighboring cell when the terminal device is in the connected state, so as to obtain an SSB SNR measurement value of the neighboring cell. The terminal device can perform RSRP measurement on the SSB of the neighboring cell to obtain an SSB RSRP measurement value of the neighboring cell. The terminal device can perform RSRQ measurement on the SSB of the neighboring cell to obtain an SSB RSRQ measurement value of the neighboring cell.

In a possible implementation manner, the terminal device receives measurement configuration information sent by the network device, measures the SSB of the serving cell according to the measurement configuration information to obtain an SSB measurement value of the serving cell, and measures the SSB of the neighboring cell according to the measurement configuration information to obtain a first SSB measurement value of the neighboring cell.

Optionally, the measurement configuration information may be measurement time configuration (SMTC) information of the SSB, and is used to instruct the terminal device to measure a measurement window of the SSB. The SMTC information may include information of a period (period), time domain offset (offset), and duration (duration) of a measurement window. The terminal device may measure the SSB of the measurement window according to the measurement window.

S502: and measuring the PDSCH of the serving cell to obtain a PDSCH measured value of the serving cell.

For example, the terminal device may measure a demodulation reference signal (DMRS) in the PDSCH of the serving cell, to obtain a PDSCH measurement value of the serving cell. Wherein the PDSCH measurement may include one or more of: PDSCH DMRS SNR, PDSCH DMRS RSRP, PDSCH DMRS RSRQ. The higher the PDSCH measurement, the better the quality of the PDSCH channel.

S503: if the PDSCH measured value is larger than or equal to a first preset threshold value, adjusting the first SSB measured value of the adjacent cell to obtain a second SSB measured value of the adjacent cell, wherein the second SSB measured value of the adjacent cell is smaller than the first SSB measured value of the adjacent cell.

S504: and sending the SSB measurement value of the service cell and the second SSB measurement value of the neighboring cell to network equipment.

In this embodiment, when the PDSCH measurement value of the serving cell is greater than or equal to the first preset threshold, the PDSCH channel quality of the serving cell may be considered to be better. In this case, the terminal device may adjust the first SSB measurement value of the neighboring cell to obtain a second SSB measurement value of the neighboring cell, and make the second SSB measurement value of the neighboring cell smaller than the first SSB measurement value of the neighboring cell. That is to say, under the condition that the PDSCH channel quality of the serving cell is good, a lower SSB measurement value of the neighboring cell may be reported to the network device, so that the network device may be prevented from initiating handover as much as possible, and the terminal device is thereby left in the current serving cell to prevent handover to a cell with poorer performance.

Optionally, when the PDSCH measurement value of the serving cell is smaller than the first preset threshold, it indicates that the PDSCH channel quality of the serving cell is poor, and in this case, the terminal device does not adjust the first SSB measurement value of the neighboring cell. That is, the terminal device reports the SSB measurement value of the serving cell and the first SSB measurement value of the neighboring cell to the network device. Therefore, the network device can judge whether to initiate handover according to the SSB measurement value of the serving cell and the first SSB measurement value of the neighboring cell.

In a possible implementation manner, the terminal device may adjust the first SSB measurement value of the neighboring cell according to the PDSCH measurement value of the serving cell, so as to obtain the second SSB measurement value of the neighboring cell.

Optionally, a target adjustment manner may be determined according to the PDSCH measurement value of the serving cell, where adjustment manners corresponding to different PDSCH measurement values are different; and then the first SSB measured value of the adjacent cell is adjusted according to the target adjustment mode to obtain a second SSB measured value of the adjacent cell.

Optionally, the target adjustment value may be determined according to a PDSCH measurement value of the serving cell; and determining the difference between the first SSB measured value of the adjacent area and the target adjusting value as a second SSB measured value of the adjacent area.

In one example, different PDSCH measurement values correspond to different adjustment values, and there is a positive correlation between the adjustment values and the PDSCH measurement values. When the PDSCH measurement value is larger, the corresponding adjustment value is larger, so that the adjusted second SSB measurement value is smaller. When the PDSCH measurement value is smaller, the corresponding adjustment value is smaller, so that the adjusted second SSB measurement value is larger.

In another example, different ranges of measurement values correspond to different adjustment values. The method comprises the steps that a plurality of preset measurement value ranges can be obtained, each measurement value range corresponds to an adjustment value, a target measurement value range is determined from the measurement value ranges according to a PDSCH measurement value of a serving cell, and the PDSCH measurement value of the serving cell is located in the target measurement value range; and determining the adjustment value corresponding to the target measurement value range as a target adjustment value.

In this embodiment, when the measured value of the PDSCH is high, a lower measured value of the SSB of the neighboring cell is reported to the network device, so that the network device does not trigger the handover procedure as much as possible, and it is ensured that the terminal device stays in the serving cell, thereby avoiding the influence on the service of the terminal device.

The cell measurement method provided by the embodiment comprises the following steps: the method comprises the steps that a terminal device measures an SSB of a serving cell to obtain an SSB measured value of the serving cell, measures an SSB of a neighboring cell to obtain a first SSB measured value of the neighboring cell, measures a PDSCH of the serving cell to obtain a PDSCH measured value of the serving cell, adjusts the first SSB measured value of the neighboring cell to obtain a second SSB measured value of the neighboring cell if the PDSCH measured value is larger than or equal to a first preset threshold value, and sends the SSB measured value of the serving cell and the second SSB measured value of the neighboring cell to a network device, wherein the second SSB measured value of the neighboring cell is smaller than the first SSB measured value of the neighboring cell. Through the above process, under the condition that the PDSCH channel quality of the serving cell is good, the terminal device may report a lower SSB measurement value of the neighboring cell to the network device, so that the network device may be prevented from initiating handover as much as possible, and the terminal device is thereby left in the current serving cell to prevent handover to a cell with poorer performance.

How to adjust the SSB measurement value of the neighbor cell according to the PDSCH measurement value is described below with reference to a specific example.

Fig. 6 is a schematic diagram illustrating adjustment of a neighbor cell SSB measurement value according to a PDSCH measurement value according to an embodiment of the present application. As shown in fig. 6, the horizontal axis represents PDSCH measurement values of the serving cell. PDSCH measurements can be divided into 4 measurement ranges as follows:

measurement value range 1: PDSCH measurement less than A1;

measurement value range 2: the PDSCH measurement is greater than or equal to A1, and the PDSCH measurement is less than A2;

measurement value range 3: PDSCH measurement greater than or equal to A2 and PDSCH measurement less than A3;

measurement value range 4: PDSCH measurement greater than or equal to A3;

wherein each measurement value range corresponds to an adjustment value. Measurement value range 1 corresponds to adjustment value B0=0, measurement value range 2 corresponds to adjustment value B1, measurement value range 3 corresponds to adjustment value B2, measurement value range 4 corresponds to adjustment value B3, B0< B1< B2< B3.

Referring to fig. 6, when the PDSCH measurement value of the serving cell is smaller than A1 (a first preset threshold), that is, the PDSCH measurement value of the serving cell is in measurement value range 1, which indicates that the PDSCH channel quality of the serving cell is poor, in this case, the terminal device does not adjust the first SSB measurement value of the neighboring cell.

Continuing with fig. 6, when the PDSCH measurement value of the serving cell is greater than or equal to A1 (the first preset threshold), it indicates that the PDSCH channel quality of the serving cell is better, and in this case, the terminal device adjusts the first SSB measurement value of the neighboring cell to obtain the second SSB measurement value of the neighboring cell.

For example, if the PDSCH measurement value of the serving cell is within the measurement value range 2, the difference between the first SSB measurement value of the neighboring cell and the adjustment value B1 is determined as the second SSB measurement value of the neighboring cell. And if the PDSCH measured value of the serving cell is in the measured value range 3, determining the difference between the first SSB measured value of the adjacent cell and the adjustment value B2 as the second SSB measured value of the adjacent cell. And if the PDSCH measured value of the serving cell is in the measured value range 4, determining the difference between the first SSB measured value of the adjacent cell and the adjustment value B3 as the second SSB measured value of the adjacent cell.

Based on the adjustment process shown in fig. 6, in the case that the SSB measurement value of the serving cell is not much different from the first SSB measurement value of the neighboring cell, if the PDSCH measurement value of the serving cell is higher, the first SSB measurement value of the neighboring cell is adjusted to be lower, so that the network device does not trigger the handover procedure as much as possible, thereby avoiding the terminal device from being handed over to the cell with poorer performance.

On the basis of any of the above embodiments, the following describes the technical solution of the present application in more detail with reference to a more specific embodiment.

Fig. 7 is a flowchart illustrating another cell measurement method according to an embodiment of the present application. As shown in fig. 7, the method of this embodiment includes:

s701: the method comprises the steps of measuring SSB of a service cell for at least two periods to obtain a measured value of each period corresponding to the service cell, and filtering the measured values of the at least two periods corresponding to the service cell to obtain the SSB measured value of the service cell.

In this embodiment, the terminal device may periodically measure the SSB of the serving cell, and obtain a measurement value of each period. Furthermore, the terminal device may perform filtering processing on the measurement values of the preset number of cycles, and use the result of the filtering processing as the SSB measurement value of the serving cell. For example, the measurement values of 3 consecutive periods may be filtered to obtain the SSB measurement value of the serving cell.

Optionally, an alpha filtering algorithm may be used to filter the measured values of the preset number of cycles.

It can be understood that, under the condition of severe co-channel interference, the measurement values in each period may fluctuate, and the SSB measurement values reported to the network device are relatively smooth by performing filtering processing on the measurement values in a plurality of periods, so as to avoid ping-pong handover of the terminal device between two cells due to the fluctuation.

Optionally, the terminal device may perform at least two filtering processes on the measurement values of multiple periods, and use a final filtering result as the SSB measurement value of the serving cell.

For example, the first filtering process may be performed at the physical layer for a plurality of periods of the measured values, and the second filtering process may be performed at a Radio Resource Control (RRC) layer, so as to further improve the smoothness of the SSB measured values.

S702: the method comprises the steps of measuring the SSB of the adjacent cell for at least two periods to obtain a measured value of each period corresponding to the adjacent cell, and filtering the measured values of the at least two periods corresponding to the adjacent cell to obtain a first SSB measured value of the adjacent cell.

It should be understood that the process of performing the filtering process on the SSB of the neighboring cell is similar to that of the serving cell, and reference may be made to the detailed description of S701, which is not described herein again.

S703: and determining whether the ongoing service type of the terminal equipment is a preset service type.

The preset service type is a big data transmission type, that is, the amount of data to be transmitted between the terminal device and the network device is large. For example, the preset traffic types may include: file Transfer Protocol (FTP) download, and the like.

In a possible implementation manner, the size of a data transmission block corresponding to the terminal device may be obtained, and if the size of the data transmission block is greater than or equal to a second preset threshold, it is determined that the ongoing service type of the terminal device is a preset service type. And if the size of the data transmission block is smaller than a second preset threshold value, determining that the ongoing service type of the terminal equipment is not the preset service type.

For example, the size of the data transmission block scheduled this time by the terminal device (e.g., the TBsize scheduled this time) may be obtained according to the current scheduling information of the terminal device. And if the size of the data transmission block scheduled this time is larger than or equal to a second preset threshold, determining that the ongoing service type of the terminal equipment is a preset service type. And if the size of the data transmission block scheduled this time is smaller than a second preset threshold, determining that the ongoing service type of the terminal equipment is not the preset service type.

For example, the sizes of a plurality of historical data transmission blocks corresponding to the terminal device may be obtained according to a plurality of scheduling information of the terminal device within a preset time before the current time, and the sizes of the plurality of historical data transmission blocks may be averaged to obtain the average size of the data transmission block. And if the average size of the data transmission blocks is greater than or equal to a second preset threshold, determining that the ongoing service type of the terminal equipment is a preset service type. And if the average size of the data transmission blocks is smaller than a second preset threshold value, determining that the ongoing service type of the terminal equipment is not the preset service type. Due to the fact that the plurality of historical data transmission blocks are utilized, the terminal device can judge the service type more accurately.

If the ongoing service type of the terminal device is not the preset service type, S708 is executed.

If the ongoing service type of the terminal device is the preset service type, S704 is executed.

S704: and measuring the PDSCH of the serving cell to obtain the PDSCH measured value of the serving cell.

S705: determining whether the PDSCH measurement is greater than or equal to a first preset threshold.

If the PDSCH measurement value is greater than or equal to a first preset threshold, S706 and S707 are performed.

If the PDSCH measurement value is smaller than the first preset threshold, S708 is performed.

S706: if the PDSCH measured value is larger than or equal to a first preset threshold value, the first SSB measured value of the adjacent cell is adjusted to obtain a second SSB measured value of the adjacent cell, and the second SSB measured value of the adjacent cell is smaller than the first SSB measured value of the adjacent cell.

It should be understood that, in S706, reference may be made to the detailed description of the embodiment shown in fig. 5 or fig. 6 for a manner of adjusting the first SSB of the neighboring cell, which is not described herein again.

S707: and sending the SSB measurement value of the service cell and the second SSB measurement value of the neighboring cell to network equipment.

S708: and sending the SSB measurement value of the service cell and the first SSB measurement value of the adjacent cell to network equipment.

It should be understood that, in this embodiment, after receiving the SSB measurement value of the serving cell and the SSB measurement value of the neighboring cell (the first SSB measurement value of the neighboring cell or the second SSB measurement value of the neighboring cell), the network device may determine whether the handover trigger condition is satisfied by using any one of the events A1 to A6, and if the handover trigger condition is satisfied, initiate a handover procedure.

And the terminal equipment executes the cell switching process according to the switching command of the network equipment. After the terminal device is switched to a new serving cell, the cell measurement method of the embodiment is continuously adopted to perform cell measurement.

In this embodiment, when the current ongoing service type of the terminal device is the preset service type and the PDSCH measurement value of the serving cell is higher than the first preset threshold, the SSB measurement value of the neighboring cell reported to the network device is reduced, so that the network device does not trigger the handover procedure as much as possible, thereby avoiding the terminal device being handed over to a cell with poorer performance and ensuring that data transmission of the terminal device is not affected.

Fig. 8 is a schematic structural diagram of a cell measurement apparatus according to an embodiment of the present application. The cell measurement device provided in this embodiment may be in the form of software and/or hardware. Illustratively, the apparatus may be a terminal device, and may also be a chip or a chip module integrated in the terminal device. As shown in fig. 8, the cell measurement apparatus 800 provided in this embodiment includes: a first measurement module 801, a second measurement module 802, a processing module 803, and a sending module 804.

The first measurement module 801 is configured to measure a synchronization signal and a physical broadcast channel block SSB of a serving cell to obtain an SSB measurement value of the serving cell, and measure an SSB of a neighboring cell to obtain a first SSB measurement value of the neighboring cell;

a second measurement module 802, configured to measure a PDSCH of the serving cell to obtain a PDSCH measurement value of the serving cell;

a processing module 803, configured to adjust the first SSB measurement value of the neighboring cell if the PDSCH measurement value is greater than or equal to a first preset threshold, to obtain a second SSB measurement value of the neighboring cell, where the second SSB measurement value of the neighboring cell is smaller than the first SSB measurement value of the neighboring cell;

a sending module 804, configured to send the SSB measurement value of the serving cell and the second SSB measurement value of the neighboring cell to a network device.

In a possible implementation manner, the processing module 803 is specifically configured to:

determining a target adjustment value according to the PDSCH measured value;

In a possible implementation manner, the first measurement module 801 is specifically configured to:

and performing filtering processing on the at least two periods of measurement values corresponding to the serving cell to obtain an SSB measurement value of the serving cell.

In a possible implementation manner, the apparatus is applied to a terminal device, and the second measurement module 802 is specifically configured to:

In a possible implementation manner, the second measurement module 802 is specifically configured to:

if the size of the data transmission block is larger than or equal to a second preset threshold, determining that the ongoing service type of the terminal equipment is the preset service type;

In a possible implementation manner, the sending module 804 is further configured to:

The cell measurement apparatus provided in this embodiment may be used to implement the cell measurement method provided in any of the above method embodiments, and the implementation principle and technical effect are similar, which are not described herein again.

Fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 9, the terminal device 900 provided in this embodiment may include: a transceiver 901, a memory 902, a processor 903. The transceiver 901 may include: a transmitter and/or a receiver. The transmitter may also be referred to as a sender, a transmitter, a sending port or a sending interface, and the like, and the receiver may also be referred to as a receiver, a receiving port or a receiving interface, and the like. Illustratively, the transceiver 901, the memory 902, and the processor 903 are connected to each other through a bus 904.

The memory 902 is used to store computer-executable instructions;

the processor 903 is configured to execute the computer executable instructions stored by the memory to cause the terminal device 900 to perform any of the methods described above.

The transmitter in the transceiver 901 may be configured to perform the transmitting function of the terminal device in the foregoing method embodiment. The processor 903 may be configured to perform the measurement function and the processing function performed by the terminal device in the above method embodiments.

The terminal device provided in this embodiment may be configured to execute the cell measurement method executed by the terminal device in any of the above method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

An embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium includes a computer program, where the computer program is used to implement the cell measurement method according to any of the above method embodiments, and the implementation principle and the technical effect of the method are similar, and details are not described here.

An embodiment of the present application further provides a chip, including: the cell measurement method of any one of the above method embodiments is implemented by a memory, a processor, and hardware system resources, where the memory stores a computer program, and the processor runs the computer program to execute the cell measurement method of any one of the above method embodiments, and the implementation principle and the technical effect are similar, and are not described herein again.

The embodiment of the present application further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the method for cell measurement according to any of the above method embodiments is implemented, and the implementation principle and the technical effect are similar, which are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.

The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.

It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in the incorporated application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.

The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The storage medium may be implemented by any type or combination of volatile and non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of cell measurement, comprising:

measuring a synchronization signal and a physical broadcast channel block (SSB) of a serving cell to obtain an SSB measurement value of the serving cell, and measuring an SSB of a neighboring cell to obtain a first SSB measurement value of the neighboring cell;

2. The method of claim 1, wherein adjusting the first SSB measurement value of the neighboring cell to obtain the second SSB measurement value of the neighboring cell comprises:

3. The method of claim 2, wherein adjusting the first SSB measurement value of the neighboring cell according to the PDSCH measurement value to obtain a second SSB measurement value of the neighboring cell comprises:

determining a target adjustment value according to the PDSCH measured value;

4. The method of claim 3, wherein determining a target adjustment value based on the PDSCH measurement comprises:

5. The method of any of claims 1 to 4, wherein measuring the SSB of the serving cell to obtain the SSB measurement value of the serving cell comprises:

6. The method of claim 5, wherein measuring the SSB of the neighbor cell to obtain a first SSB measurement value of the neighbor cell comprises:

7. The method of claim 6, wherein the method is applied to a terminal device, and the measuring the PDSCH of the serving cell to obtain the PDSCH measurement value of the serving cell comprises:

8. The method of claim 7, wherein determining whether the ongoing traffic type of the terminal device is a preset traffic type comprises:

9. The method of claim 8, further comprising:

10. The method of claim 9, further comprising:

11. A cell measurement device, comprising:

12. The apparatus of claim 11, wherein the processing module is specifically configured to:

13. The apparatus of claim 12, wherein the processing module is specifically configured to:

determining a target adjustment value according to the PDSCH measurement value;

14. The apparatus of claim 13, wherein the processing module is specifically configured to:

15. The apparatus according to any one of claims 11 to 14, wherein the first measurement module is specifically configured to:

16. The apparatus of claim 15, wherein the first measurement module is specifically configured to:

17. The apparatus according to claim 16, wherein the apparatus is applied to a terminal device, and the second measurement module is specifically configured to:

18. The apparatus of claim 17, wherein the second measurement module is specifically configured to:

19. The apparatus of claim 18, wherein the sending module is further configured to:

20. The apparatus of claim 19, wherein the sending module is further configured to:

21. A terminal device, comprising: a transceiver, a processor, a memory;

the memory stores computer executable instructions which, when executed by the processor, implement the method of any one of claims 1 to 10.

22. A computer-readable storage medium having computer-executable instructions stored therein which, when executed by a processor, implement the method of any one of claims 1 to 10.