CN111434138A

CN111434138A - Cell signal quality determination method, device and system

Info

Publication number: CN111434138A
Application number: CN201880076831.3A
Authority: CN
Inventors: 杨宁
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-01-18
Filing date: 2018-01-18
Publication date: 2020-07-17
Anticipated expiration: 2038-01-18
Also published as: CN111434138B; WO2019140598A1

Abstract

The embodiment of the application provides a method, a device and a system for determining cell signal quality, which relate to the field of communication, wherein the method comprises the following steps: the terminal receives n threshold values and weight factors corresponding to the threshold values; the terminal measures the signal quality of m wave beams belonging to the same cell; and the terminal determines the cell signal quality of the cell according to the signal quality of each beam, the n threshold values and the weight factor. By comprehensively evaluating the signal quality of m wave beams of the same cell by combining n threshold values and weight factors, the signal quality of a plurality of wave beams can be adopted to more accurately evaluate and characterize the cell signal quality of the same cell, and the effect of more accurately quantizing the cell signal quality adopting a plurality of wave beams is achieved.

Description

Cell signal quality determination method, device and system

Technical Field

The embodiment of the application relates to the field of communication, in particular to a method, a device and a system for determining cell signal quality.

Background

A terminal in an idle state (idle) generally needs to perform Public land Mobile Network (Public L and Mobile Network (P L MN) selection, cell selection/cell reselection, location registration, and the like when accessing a cell.

In a long Term Evolution (L ong-Term Evolution, L TE) system, a terminal measures signal qualities of a serving cell and a neighboring cell to obtain a first signal quality of the serving cell and a second signal quality of the neighboring cell.

However, in a New Radio (NR) system, the same cell may be served by a plurality of beams (beams) with different directions. For cells that employ multiple beams, there is no solution on how to judge cell signal quality.

Disclosure of Invention

The embodiment of the application provides a cell signal quality determination method, a device and a system, which can solve the problem of how to judge the cell signal quality of a cell adopting a plurality of beams.

According to a first aspect of the present application, there is provided a cell signal quality determination method, the method comprising:

the terminal receives n threshold values and weight factors corresponding to the threshold values;

the terminal measures the signal quality of m wave beams belonging to the same cell;

the terminal determines the cell signal quality of the cell according to the signal quality of each beam, the n threshold values and the weight factor;

wherein m and n are both integers and n is greater than 1

According to a second aspect of the present application, there is provided a cell signal quality determination method, the method comprising:

the access network equipment determines n threshold values and a weight factor corresponding to each threshold value;

the access network equipment sends the n threshold values and the weight factors corresponding to the threshold values to a terminal, and the n threshold values and the weight factors corresponding to the threshold values are used as parameters when the terminal determines the cell signal quality;

wherein n is an integer greater than 1.

According to a third aspect of the present application, there is provided a cell signal quality determination apparatus, the apparatus comprising:

a receiving module, configured to receive n threshold values and a weight factor corresponding to each of the threshold values;

the processing module is used for measuring the signal quality of m wave beams belonging to the same cell;

the processing module is further configured to determine a cell signal quality of the cell according to the signal quality of each beam, the n threshold values, and the weight factor; wherein m and n are both integers and n is greater than 1.

According to a fourth aspect of the present application, there is provided a cell signal quality determination apparatus, the apparatus comprising:

the processing module is used for determining n threshold values and weight factors corresponding to the threshold values;

a sending module, configured to send the n threshold values and the weight factor corresponding to each threshold value to a terminal, where the n threshold values and the weight factor corresponding to each threshold value are used as parameters when the terminal determines the cell signal quality; wherein n is an integer greater than 1.

According to a fifth aspect of the present application, there is provided a terminal comprising a processor and a memory, the memory storing at least one instruction for execution by the processor to implement the cell signal quality determination method of the first aspect as described above.

According to a sixth aspect of the present application, there is provided an access network device comprising a processor and a memory, the memory storing at least one instruction for execution by the processor to implement the cell signal quality determination method of the second aspect.

According to a seventh aspect of the present application, there is provided a computer-readable storage medium storing at least one instruction for execution by a processor to implement the cell signal quality determination method of the first aspect.

According to an eighth aspect of the present application, there is provided a computer-readable storage medium storing at least one instruction for execution by a processor to implement the cell signal quality determination method of the second aspect.

According to a ninth aspect of the present application, there is provided a communication system comprising: a terminal and an access network device;

the terminal comprises the apparatus according to the third aspect, and the access network device comprises the apparatus according to the fourth aspect; alternatively, the terminal is a terminal according to the fifth aspect, and the access network device is an access network device according to the sixth aspect.

The technical scheme provided by the embodiment of the application has the beneficial effects that:

the signal quality of m wave beams of the same cell is comprehensively evaluated by combining n threshold values and weight factors, so that the signal quality of the cell of the same cell can be more accurately evaluated and represented by adopting the signal quality of a plurality of wave beams; the problem that how to judge the cell signal quality does not have a solution for the cell adopting a plurality of beams can be solved, and the effect of accurately quantizing the cell signal quality of the cell adopting the plurality of beams is achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are 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 to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a mobile communication system according to an exemplary embodiment of the present application;

fig. 2 is a schematic diagram of a cell using beams according to an exemplary embodiment of the present application;

fig. 3 is a schematic diagram of a cell using beams according to another exemplary embodiment of the present application;

fig. 4 is a flowchart of a method for determining signal quality of a cell according to an exemplary embodiment of the present application;

fig. 5 is a flowchart of a method for determining signal quality of a cell according to another exemplary embodiment of the present application;

fig. 6 is a flowchart of a method for determining signal quality of a cell according to another exemplary embodiment of the present application;

fig. 7 is a flowchart of a method for determining signal quality of a cell according to another exemplary embodiment of the present application;

fig. 8 is a block diagram of a cell signal quality apparatus provided in an exemplary embodiment of the present application;

fig. 9 is a block diagram of a cell signal quality apparatus provided by another exemplary embodiment of the present application;

fig. 10 is a block diagram of a terminal according to another exemplary embodiment of the present application;

fig. 11 is a block diagram of an access network device according to another exemplary embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Reference herein to a "module" generally refers to a program or instructions stored in memory that is capable of performing certain functions; reference herein to "a unit" generally refers to a logically partitioned functional structure, and the "unit" may be implemented by pure hardware or a combination of hardware and software.

Reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another.

Referring to fig. 1, a schematic structural diagram of a mobile communication system according to an embodiment of the present application is shown. The mobile communication system may be a 5G system, also called NR system. The mobile communication system includes: access network device 120 and terminal 140.

The Access network device 120 may be a base station, for example, the base station may be a base station (gNB) in a centralized distributed architecture in a 5G system, when the Access network device 120 employs the centralized distributed architecture, the base station generally includes a Central Unit (CU) and at least two Distributed Units (DUs), a Packet Data Convergence Protocol (PDCP) layer is disposed in the central unit, a Radio link layer Control Protocol (Radio L ink Control, R L C) layer, a Protocol stack of a Media Access Control (MAC) layer is disposed in the central unit, a Physical (PHY) layer Protocol stack is disposed in the distributed unit, this application embodiment does not limit a specific implementation manner of the Access network device 120, optionally, the Access network device may further include a Home base station (Home eNB, HeNB), a Relay (Relay), a Pico base station (Pico, etc., the Access network device 120 may also be referred to as a network side device, and the network side device may also include a generalized Access network device (Access network device) (not shown in the figure) located on the core 120).

The access network device 120 and the terminal 140 establish a wireless connection over a wireless air interface. Optionally, the wireless air interface is a wireless air interface based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; alternatively, the wireless air interface may be a wireless air interface based on a 5G next generation mobile communication network technology standard.

Terminal 140 may refer to a device that provides voice and/or data connectivity to a user. The terminals may communicate with one or more core networks via a Radio Access Network (RAN), and the terminals 140 may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers with mobile terminals.

It should be noted that, in the mobile communication system shown in fig. 1, a plurality of access network devices 120 and/or a plurality of terminals 140 may be included, and fig. 1 illustrates one access network device 120 and one terminal 140, but this embodiment is not limited thereto.

Optionally, the application scenarios of the 5G system include, but are not limited to, enhanced Mobile BroadBand (eMBB), low latency high reliability Communication (Ultra Reliable & L ow L opportunity Communication, UR LL C), massive Machine Type Communication (mtc).

On the other hand, because the eMBBs may be deployed in different scenes, such as indoors, urban areas, rural areas, and the like, the difference between the capabilities and the requirements is large, typical applications of the UR LL C include industrial automation, electric power automation, telemedicine operations (operations), traffic safety guarantee, and the like.

The present application will first be described in terms of several nouns:

synchronization signal/physical broadcast channel block (SS/PBCH block, SSB): an SSB is formed by a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). The SSB occupies a total of 4 symbols in the time domain and 240 subcarriers in the frequency domain. Of course, the SSB may occupy resources in the time domain and/or the frequency domain in other manners, which is not limited in this embodiment.

A serving cell: the cell in which the terminal currently resides.

Adjacent cell: and the non-service cell which can be measured by the current position of the terminal.

Beamforming: the technique focuses the energy of the wireless signal to form a beam with directivity. Generally, the narrower the beam, the greater the signal gain. In a 5G system, an access network device and a terminal will use a high-frequency band above 6GHz, however, in the high-frequency band, attenuation of a high-frequency signal is large, and thus coverage of the high-frequency signal is small. In order to solve the problem of poor coverage and large attenuation of high frequency signals, a cell in a 5G system provides services to a terminal by using beams. For example, system information is transmitted by a beam, and downlink data is transmitted by a beam.

Referring to fig. 2, a diagram of a cell using beams according to an exemplary embodiment of the present application is shown. The cell coverage provided by the access network equipment 220 is in a circular or near-circular area. One or more terminals 240 are distributed within the coverage area of the cell. The access network device 220 is provided with a plurality of beams, such as 4 beams, each covering a 90 ° range in the 360 ° transmission direction; as another example, 12 beams, each beam 30 °; as another example, 64 beams, each covering 5.625 degrees. The number of beams provided by the access network device 220 and the angle range covered by each beam are not limited in the embodiment of the present application. Among the multiple beams provided by the access network device 220, each terminal 240 corresponds to a beam suitable for itself according to the position of the terminal 240.

With beamforming techniques, access network equipment needs to use multiple beams of different orientations to fully cover a cell. As shown in fig. 3, the cell coverage provided by the access network equipment 220 is in a circular or near-circular area, and there are two

terminals

242 and 244 distributed within the coverage area of the cell. The access network device 220 uses 8 transmit beams, each covering a 45 range, to cover the cell it serves. In fig. 3, 4 beams t1, t2, t3 and t4 are shown, and in the downlink process, the access network device sequentially transmits wireless signals using differently directed transmission beams, which is called Beam scanning (Beam scanning); meanwhile, the terminal measures wireless signals (Beam measurement) emitted by different emission beams and reports related information (Beam reporting) to the access network equipment; the access network equipment determines the best transmitting Beam (Beam determination) aiming at the terminal according to the report of the terminal.

The NR system allows a terminal to shift different receive beams for a transmit beam and select the best receive beam therefrom, thereby producing a pair of best "transmit-receive beams". In fig. 3, the best beam pair corresponding to the terminal 242 is (t2, r3), and the best beam pair corresponding to the terminal 244 is (t3, r 2).

Obviously, the same terminal can receive multiple beams of the same cell at the same position or at different times, and also can receive multiple beams of different cells at the same time or at different times.

Referring to fig. 4, a flowchart of a method for determining signal quality of a cell according to an exemplary embodiment of the present application is shown. The present embodiment is exemplified by applying the method to the terminal shown in fig. 1. The method comprises the following steps:

step 401, a terminal receives n threshold values and weight factors corresponding to each threshold value;

and the terminal receives n threshold values sent by the access network equipment and the weight factor corresponding to each threshold value. Wherein n is an integer greater than 1. In one possible embodiment, any two threshold values in the n threshold values are different, and the n threshold values are arranged in an order from large to small.

Optionally, the n threshold values are thresholds for performing signal quality evaluation according to beam granularity.

Optionally, the n threshold values are signal quality thresholds for cell reselection.

Optionally, the sum of the weighting factors corresponding to the n threshold values is equal to 1. For example, there are 3 thresholds th1, th2, and th3, which correspond to 3 weight factors fa1, fa2, and fa3 in sequence. Wherein fa1 is 0.6, fa2 is 0.3, and fa3 is 0.1.

Step 402, a terminal measures the signal quality of m wave beams belonging to the same cell;

the terminal can receive the signal quality of m wave beams belonging to the same cell at the same position or in the moving process, wherein m is a positive integer. Optionally, the cell is a serving cell and/or a neighboring cell. For simplicity of description, the present embodiment is described in terms of one of the cells, but in practice the terminal may measure the signal quality of multiple beams of multiple cells.

Optionally, the beam is a downlink transmission beam of the cell.

Step 403, the terminal determines the cell signal quality of the cell according to the signal quality of each beam, the n threshold values and the weight factor.

And the terminal comprehensively calculates the cell signal quality of the cell according to the measured signal quality of each beam, the n threshold values and the weight factor.

Optionally, there is at least one cell for at least two beams.

In summary, in the method provided in this embodiment, by performing comprehensive evaluation on the signal quality of m beams of the same cell in combination with n thresholds and weight factors, the signal quality of multiple beams can be used to perform more accurate evaluation and characterization on the cell signal quality of the same cell; the problem that how to judge the cell signal quality does not have a solution for the cell adopting a plurality of beams can be solved, and the effect of accurately quantizing the cells adopting the plurality of beams is achieved.

Compared with a mode of directly adopting one beam with the best signal quality in a cell as the signal quality of the cell, the method provided by the embodiment can comprehensively consider the signal quality of a plurality of beams of the same cell, and improve the accuracy of the cell signal quality obtained by calculation.

In an optional implementation manner for step 403, the terminal determines the cell signal quality of the cell according to the signal quality of each beam, the maximum threshold value reached by the signal quality of each beam, and the weight factor corresponding to the maximum threshold value. At this time, step 403 may be alternatively implemented as step 403a and step 403b, as shown in fig. 5:

step 403a, for the kth threshold value in the n threshold values, the terminal calculates an average value of the signal qualities of the kth group of beams, of which the signal quality reaches the kth threshold value at most, and determines the average value as a signal quality component corresponding to the kth threshold value, where k is an integer less than or equal to n;

if the n thresholds are arranged in the order from high to low, the maximum signal quality of one beam reaching the kth threshold means: the k-1 threshold value is larger than the signal quality of the wave beam and is larger than or equal to the k threshold value.

If the n thresholds are arranged in the sequence from low to high, the maximum signal quality of one beam reaching the kth threshold means: the k threshold value is less than or equal to the signal quality of the wave beam and less than the k +1 threshold value.

In step 403b, the terminal determines the weighted sum of the signal quality component and the weighting factor corresponding to each of the n threshold values as the cell signal quality of the cell.

For example, the terminal obtains 3 thresholds th1 > th2 > th3, which correspond to weight factors fa1, fa2, and fa3, where fa1+ fa2+ fa3 is 1. If there are x first beams with signal quality greater than th1, y second beams with signal quality greater than th2 and less than th1, and z third beams with signal quality greater than th3 and less than th2, then the cell signal quality of the cell is calculated as:

the average of the signal qualities of the x first beams fa1+ the average of the signal qualities of the y second beams fa2+ the average of the signal qualities of the z third beams fa 3.

Wherein x + y + z is less than or equal to m.

In summary, the method provided in this embodiment can perform more accurate evaluation on the cell signal quality of the cell according to the number of beams whose signal quality reaches the threshold at the maximum and the weight factor corresponding to each threshold. In a specific example, the terminal can measure that the signal quality of beam 1 of cell a is relatively medium, that of beam 2 of cell B is relatively good, and that of beam 3 of cell B is relatively poor. In order to reduce the influence of the beam 3 on the cell signal quality of the cell B, a higher threshold with a higher weight factor and a lower threshold with a weaker weight factor may be set, so that when the terminal reselects a cell, the cell B may be preferentially selected as a cell to be camped on.

In an alternative embodiment based on fig. 5, for an ith threshold value of the n threshold values, if there is no beam whose signal quality reaches the ith threshold value at most and there is a jth group of beams whose signal quality reaches the jth threshold value at most, an average value of signal qualities of the jth group of beams is determined as a signal quality component corresponding to the ith threshold value.

Optionally, the jth threshold is smaller than the ith threshold. The jth threshold may be a next threshold smaller than the ith threshold, such as an (i + 1) th threshold; the jth threshold may also be a nearest threshold that is less than the ith threshold and has a corresponding jth group of beams; the jth threshold value may also be any one of threshold values smaller than the ith threshold value. This is not limited in the examples of the present application.

For example, the terminal obtains 4 thresholds th1 > th2 > th3 > th4, which correspond to weight factors fa1, fa2, fa3, and fa4, respectively, where fa1+ fa2+ fa3+ fa4 is equal to 1. If there are x first beams with signal quality greater than th1, no beam with signal quality greater than th2 and less than th1, y third beams with signal quality greater than th3 and less than th2, and z fourth beams with signal quality greater than th4 and less than th3, then the cell signal quality for the cell is calculated as:

the average value of the signal qualities of the x first beams fa1+ the average value of the signal qualities of the y third beams fa2+ the average value of the signal qualities of the y third beams fa3+ the average value of the signal qualities of the z third beams fa 4-the average value of the signal qualities of the x first beams fa1+ the average value of the signal qualities of the y third beams fa2+ fa3+ the average value of the signal qualities of the z third beams fa 4.

For another example, the terminal obtains 4 thresholds th1 > th2 > th3 > th4, which correspond to weight factors fa1, fa2, fa3, and fa4, respectively, where fa1+ fa2+ fa3+ fa4 is equal to 1. If there are x first beams with signal quality greater than th1, there is no beam with signal quality greater than th2 and less than th1, there is no beam with signal quality greater than th3 and less than th2, and there are y fourth beams with signal quality greater than th4 and less than th3, then the cell signal quality of the cell is calculated as:

the average value of the signal qualities of the x first beams fa1+ the average value of the signal qualities of the y fourth beams fa2+ the average value of the signal qualities of the y fourth beams fa3+ the average value of the signal qualities of the y fourth beams fa 4-the average value of the signal qualities of the x first beams fa1+ the average value of the signal qualities of the y fourth beams fa2+ fa3+ fa 4.

In summary, the method provided in this embodiment can shift the weight factor of the ith threshold to the jth threshold when the ith threshold does not have the corresponding ith beam group and the jth threshold has the corresponding jth beam group, so that the average value of the beam signal qualities corresponding to the jth threshold is used to represent the beam signal quality corresponding to the ith threshold, and the cell signal quality is quantized more accurately.

In an alternative embodiment based on fig. 5, for an ith threshold value of the n threshold values, if there is no beam whose signal quality reaches the ith threshold value at most and there is a jth group of beams whose signal quality reaches the jth threshold value at most, then the preset reference signal quality is determined as a signal quality component corresponding to the ith threshold value, where i is an integer less than or equal to n.

Optionally, each threshold value in the n threshold values corresponds to respective preset reference signal quality; or at least two thresholds exist in the n thresholds and correspond to different preset reference signal qualities; or, each of the n thresholds shares the same preset reference signal quality.

Optionally, the preset reference signal quality is Pre-configured (Pre-configured) by the access network device, or the preset reference signal quality is Pre-defined (Pre-determined).

For example, the terminal obtains 3 thresholds th1 > th2 > th3 respectively corresponding to weight factors fa1, fa2 and fa3, where fa1+ fa2+ fa3 is 1. The 3 threshold values also correspond to respective preset reference signal qualities sq1, sq2 and sq 3. sq1 > sq2 > sq3, i.e. any two of the three preset reference signal qualities are different.

If there are x first beams with signal quality greater than th1, no beam with signal quality greater than th2 and less than th1, and y third beams with signal quality greater than th3 and less than th2, then the cell signal quality of the cell is calculated as:

the average of the signal qualities of the x first beams fa1+ sq2 fa2+ y third beams fa 3.

For another example, the terminal obtains 3 thresholds th1 > th2 > th3, and the thresholds correspond to weight factors fa1, fa2 and fa3, where fa1+ fa2+ fa3 is 1. The th1 corresponds to the default reference signal quality sq1, and the th2 and the th3 correspond to the default reference signal quality sq 2. Wherein sq1 > sq 2.

If the signal quality of any beam is not greater than th1, the signal quality of any beam is not greater than th2 and less than th1, and the signal quality of x third beams is greater than th3 and less than th2, then the cell signal quality of the cell is calculated as:

sq1 fa1+ sq2 fa2+ the average value of the signal qualities of the x third beams fa 3.

For another example, the terminal obtains 3 thresholds th1 > th2 > th3, and the thresholds correspond to weight factors fa1, fa2 and fa3, where fa1+ fa2+ fa3 is 1. Wherein the three thresholds correspond to the same predetermined reference signal quality sqx.

sqx fa1+ sqx fa2+ x third beams, the average of the signal qualities fa 3.

In another alternative embodiment, each of the n threshold values shares the same preset reference signal quality, which is 0.

For example, the terminal obtains 3 thresholds th1 > th2 > th3 respectively corresponding to weight factors fa1, fa2 and fa3, where fa1+ fa2+ fa3 is 1. Wherein, the three thresholds correspond to the same preset reference signal quality 0.

the average of the signal quality of the x third beams fa 3.

In summary, the method provided in this embodiment can use the preset reference signal quality to represent the beam signal quality corresponding to the ith threshold when the ith threshold does not have the corresponding ith beam group, so as to more accurately quantify the cell signal quality. Optionally, when only one beam with higher signal quality exists in the cell a and a plurality of beams with higher signal quality exist in the cell B, the reselection priority of the cell a with respect to the cell B is weakened to a certain extent, and the probability that the cell B is reselected as the serving cell to be camped on is increased.

In another optional implementation manner for step 403, the terminal determines the cell signal quality of the cell according to the signal quality of each beam, the threshold value reached by the signal quality of each beam, and the weight factor corresponding to each threshold value. At this time, step 403 may be alternatively implemented as step 4031 and step 4032, as shown in fig. 6:

step 4031, for the k-th threshold value in the n threshold values, the terminal calculates the average value of the signal quality of the k-th group of beams with the signal quality reaching the k-th threshold value, and determines the average value as the signal quality component corresponding to the k-th threshold value, where k is an integer less than or equal to n;

if the n thresholds are arranged in the order from high to low, the fact that the signal quality of one beam reaches the kth threshold means that: the signal quality of the wave beam is larger than or equal to the kth threshold value. In this case, the signal quality of the beam may be larger than the k-1 threshold, even the k-2 threshold, which is not limited by the embodiment

If the n thresholds are arranged in the sequence from low to high, the fact that the signal quality of one beam reaches the kth threshold means that: the kth threshold is less than or equal to the signal quality of the beam.

Step 4032, determine the weighted sum of the signal quality component and the weighting factor corresponding to each of the n threshold values as the cell signal quality of the cell.

For example, the terminal obtains 3 thresholds th1 > th2 > th3, which correspond to weight factors fa1, fa2, and fa3, where fa1+ fa2+ fa3 is 1. If the signal quality of the beam 1, the beam 2, and the beam 3 is greater than th1, the signal quality of the beam 1, the beam 2, the beam 3, and the beam 4 is greater than th2, and the signal quality of the beam 1, the beam 2, the beam 3, the beam 4, and the beam 5 is greater than th3, the cell signal quality of the cell is calculated as:

mean value of signal quality of beams 1 to 3 fa1+ mean value of signal quality of beams 1 to 4 fa2+ mean value of signal quality of beams 1 to 5 fa 3.

Wherein x + y + z is less than or equal to m.

In an alternative embodiment based on fig. 6, for an ith threshold value of the n threshold values, if there is no beam whose signal quality reaches the ith threshold value and there is a jth group of beams whose signal quality reaches the jth threshold value, an average value of the signal qualities of the jth group of beams is determined as a signal quality component corresponding to the ith threshold value.

For example, the terminal obtains 4 thresholds th1 > th2 > th3 > th4, which correspond to weight factors fa1, fa2, fa3, and fa4, respectively, where fa1+ fa2+ fa3+ fa4 is equal to 1. If the signal quality of any beam is not greater than th1, the signal quality of beam 1 and beam 2 is greater than th2, the signal quality of beam 1, beam 2 and beam 3 is greater than th3, and the signal quality of beam 1, beam 2, beam 3, beam 4 and beam 5 is greater than th4, then the cell signal quality of the cell is calculated as:

mean value of signal quality of beams 1 and 2 fa1+ mean value of signal quality of beams 1 and 2 fa2+ mean value of signal quality of beams 1 to 3 fa3+ mean value of signal quality of beams 1 to 5 fa 4.

In an alternative embodiment based on fig. 6, for an ith threshold value of n threshold values, if there is no beam whose signal quality reaches the ith threshold value and there is a jth group of beams whose signal quality reaches the jth threshold value, the preset reference signal quality is determined as a signal quality component corresponding to the ith threshold value, where i is an integer less than or equal to n.

If the signal quality of any beam is not greater than th1, the signal quality of any beam is not greater than th2, and the signal quality of y third beams is greater than th3, then the cell signal quality of the cell is calculated as:

sq1 fa1+ sq2 fa2+ y average of the signal quality of the third beams fa 3.

If the signal quality of any beam is not greater than th1, the signal quality of any beam is not greater than th2, and the signal quality of x third beams is greater than th3, then the cell signal quality of the cell is calculated as:

sqx fa1+ sqx fa2+ x third beams, the average of the signal qualities fa 3.

the average of the signal quality of the x third beams fa 3.

Referring to fig. 7, a flowchart of a method for determining signal quality of a cell according to another exemplary embodiment of the present application is shown. The present embodiment is exemplified by applying the method to the mobile communication system shown in fig. 1. The method comprises the following steps:

step 701, the access network equipment determines n threshold values and a weight factor corresponding to each threshold value;

Step 702, the access network equipment sends n threshold values and weight factors corresponding to each threshold value to the terminal;

the n threshold values and the weight factor corresponding to each threshold value are used as parameters when the terminal determines the signal quality of the cell;

optionally, the access network device sends System Information (SI) to the terminal, where the System Information carries the n threshold values and the weight factor corresponding to each threshold value.

Optionally, the system information includes SSBs, and the SSBs includes PSS, SSS, and PBCH. The n threshold values and the weight factors corresponding to each threshold value are carried in the appointed position of the SSB for transmission.

Step 703, the terminal receives n threshold values and weight factors corresponding to each threshold value;

optionally, the terminal receives system information, and acquires n thresholds and a weight factor corresponding to each threshold from the system information.

Step 704, the terminal measures the signal quality of m beams belonging to the same cell, wherein the cell comprises a serving cell and an adjacent cell;

optionally, the terminal further obtains the relevant information of the neighbor cells from the system information, including the relevant information of the co-frequency neighbor cells, the relevant information of the inter-frequency neighbor cells, and the relevant information of the non-NR cells, such as the relevant information of the L TE cell.

The terminal measures the signal quality of beams corresponding to the serving cell and/or neighboring cells. Alternatively, the m beams refer to beams that belong to the same cell and can be measured by the terminal. Since the number of beams that the terminal can measure is the same or different for different cells, the value of m is the same or different for different cells, depending on the actual reception situation of the terminal.

Optionally, there may be a conventional cell that does not use beams in the serving cell and the neighboring cell, and the terminal may use the existing technology to measure the cell signal quality of the conventional cell.

Step 705, the terminal determines the cell signal quality of the cell according to the signal quality of each beam, the n threshold values and the weight factor;

and for each beam of the same cell, the terminal determines the cell signal quality of the cell according to the signal quality of each beam, the n threshold values and the weight factor.

Details of any of the above method embodiments may be referred to in the determining process, and are not described in detail in this embodiment.

Step 706, the terminal performs cell reselection according to the cell signal quality of the serving cell and the cell signal quality of the neighboring cell.

The terminal may perform cell reselection according to the cell signal quality of the serving cell and the cell signal quality of the neighboring cell.

Illustratively, when the cell signal quality of the neighboring cell is better than the cell signal quality of the serving cell, the terminal reselects the neighboring cell as a new serving cell and re-camps on the neighboring cell.

Illustratively, when the cell signal quality of the neighboring cell is better than the cell signal quality of the serving cell and the duration of the terminal having resided in the serving cell reaches a preset duration (e.g., 1 second), the terminal reselects the neighboring cell as a new serving cell and re-resides in the neighboring cell.

In summary, the cell reselection method provided in this embodiment performs comprehensive evaluation on the signal quality of m beams of the same cell in combination with n thresholds and weight factors, and can perform more accurate evaluation and characterization on the cell signal quality of the same cell by using the signal quality of multiple beams; the problem that how to judge the cell signal quality does not have a solution for the cell adopting a plurality of beams can be solved, and the effect of accurately quantizing the cells adopting the plurality of beams is achieved.

The steps executed by the terminal in the above method embodiments may be implemented separately as a cell signal quality determination method on the terminal side, and the steps executed by the access network device may be implemented separately as a cell signal quality determination method on the access network device side.

In the following, the device embodiments of the present application are described, and since there is a corresponding relationship between the device embodiments and the method embodiments, reference may be made to corresponding descriptions in the method embodiments for technical details that are not described in the device embodiments.

Referring to fig. 8, a block diagram of a cell signal quality determination apparatus according to an exemplary embodiment of the present application is shown. The apparatus may be implemented as all or a portion of the terminal in software, hardware, or a combination of both. The device includes:

a receiving module 820, configured to receive n threshold values and a weight factor corresponding to each of the threshold values;

a processing module 840, configured to measure signal qualities of m beams belonging to the same cell;

the processing module 840 is further configured to determine the cell signal quality of the cell according to the signal quality of each beam, the n threshold values, and the weight factor;

wherein m and n are both integers and n is greater than 1.

In an optional embodiment, the processing module 840 is further configured to determine the cell signal quality of the cell according to the signal quality of each beam, a maximum threshold value reached by the signal quality of each beam, and the weight factor corresponding to the maximum threshold value.

In an optional embodiment, the processing module 840 is further configured to calculate, for a kth threshold value of the n threshold values, an average value of the signal qualities of the kth group of beams, where the signal quality reaches the kth threshold value at most, and determine the average value as a signal quality component corresponding to the kth threshold value, where k is an integer less than or equal to n;

and determining the weighted sum of the signal quality component corresponding to each of the n threshold values and the weighting factor as the cell signal quality of the cell.

In an optional embodiment, the processing module 840 is further configured to, for an ith threshold value of the n threshold values, determine an average value of signal qualities of a jth group of beams as a signal quality component corresponding to the ith threshold value if there is no beam whose signal quality reaches the ith threshold value at most and there is a jth group of beams whose signal quality reaches the jth threshold value at most;

and the jth threshold value is smaller than the ith threshold value, and i and j are integers smaller than n.

In an optional embodiment, the processing module 840 is further configured to, for an ith threshold value of the n threshold values, determine, if there is no beam with the signal quality that reaches the ith threshold value at the maximum, a preset reference signal quality as a signal quality component corresponding to the ith threshold value, where i is an integer less than or equal to n.

In an optional embodiment, the processing module 840 is further configured to determine the cell signal quality of the cell according to the signal quality of each beam, a threshold value reached by the signal quality of each beam, and the weight factor corresponding to the threshold value.

In an optional embodiment, the processing module 840 is further configured to calculate, for a kth threshold value of the n threshold values, an average value of signal qualities of kth beams whose signal qualities reach the kth threshold value, determine the average value as a signal quality component corresponding to the kth threshold value, where k is an integer less than or equal to n;

In an optional embodiment, the processing module 840 is further configured to, for an ith threshold value of the n threshold values, determine an average value of signal qualities of a jth group of beams as a signal quality component corresponding to the ith threshold value if the beam with the signal quality reaching the ith threshold value does not exist and the jth group of beams with the signal quality reaching the jth threshold value exists;

In an optional embodiment, the processing module 840 is further configured to, for an ith threshold value of the n threshold values, determine, if there is no beam whose signal quality reaches the ith threshold value, a preset reference signal quality as a signal quality component corresponding to the ith threshold value, where i is an integer less than or equal to n.

In an optional embodiment, each of the n threshold values corresponds to a respective preset reference signal quality; or, at least two thresholds exist in the n thresholds and correspond to different preset reference signal qualities; or, each of the n threshold values shares the same preset reference signal quality.

In an alternative embodiment, the sum of the weighting factors corresponding to the n threshold values is 1.

In an optional embodiment, the receiving module 820 is configured to receive system information; the processing module 840 is further configured to obtain the n threshold values and a weighting factor corresponding to each threshold value from the system information.

In an optional embodiment, the cells include a serving cell where the terminal resides and a neighboring cell of the serving cell;

the processing module 840 is further configured to perform cell reselection according to the cell signal quality of the serving cell and the cell signal quality of the neighboring cell.

Referring to fig. 9, a block diagram of a cell signal quality determination apparatus according to an exemplary embodiment of the present application is shown. The apparatus may be implemented as all or a portion of the terminal in software, hardware, or a combination of both. The device includes:

a processing module 920, configured to determine n threshold values and a weight factor corresponding to each threshold value;

a sending module 940, configured to send the n threshold values and the weight factor corresponding to each threshold value to a terminal, where the n threshold values and the weight factor corresponding to each threshold value are used as parameters when the terminal determines the cell signal quality;

wherein n is an integer greater than 1.

In an optional embodiment, the sending module 940 is configured to send, by the access network device, system information to the terminal, where the system information carries the n threshold values and a weight factor corresponding to each of the threshold values.

Referring to fig. 10, a schematic structural diagram of a terminal provided in an exemplary embodiment of the present application is shown, where the terminal includes: a processor 101, a receiver 102, a transmitter 103, a memory 104, and a bus 105.

The processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.

The receiver 102 and the transmitter 103 may be implemented as one communication component, which may be a communication chip.

The memory 104 is connected to the processor 101 through a bus 105.

The memory 104 may be configured to store at least one instruction, which the processor 101 is configured to execute to implement the various steps performed by the terminal in the above-described method embodiments.

Further, the memory 104 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), Static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).

Referring to fig. 11, a schematic structural diagram of an access network device according to an exemplary embodiment of the present application is shown, where the access network device includes: a processor 111, a receiver 112, a transmitter 113, a memory 114, and a bus 115.

The processor 111 includes one or more processing cores, and the processor 111 executes various functional applications and information processing by executing software programs and modules.

The receiver 112 and the transmitter 113 may be implemented as one communication component, which may be a communication chip.

The memory 114 is connected to the processor 111 via a bus 115.

The memory 114 may be configured to store at least one instruction, which the processor 111 is configured to execute to implement the various steps performed by the access network device in the above-described method embodiments.

Further, the memory 114 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), Static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).

The present application provides a computer-readable storage medium, in which at least one instruction is stored, and the at least one instruction is loaded and executed by the processor to implement the cell signal quality determination method provided by the above-mentioned method embodiments.

The present application also provides a computer program product, which when run on a computer causes the computer to execute the cell signal quality determination method provided by the above-mentioned method embodiments.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

A method for cell signal quality determination, the method comprising:

the terminal receives n threshold values and weight factors corresponding to the threshold values;

the terminal measures the signal quality of m wave beams belonging to the same cell;

the terminal determines the cell signal quality of the cell according to the signal quality of each beam, the n threshold values and the weight factor;

wherein m and n are both integers and n is greater than 1.
The method of claim 1, wherein said determining the cell signal quality of the cell based on the signal quality of each of the beams, the n threshold values, and the weight factors comprises:

and determining the cell signal quality of the cell according to the signal quality of each beam, the maximum threshold value reached by the signal quality of each beam and the weight factor corresponding to the maximum threshold value.
The method of claim 2, wherein the determining the cell signal quality of the cell according to the signal quality of each of the beams, a maximum threshold value reached by the signal quality of each of the beams, and the weight factor corresponding to the maximum threshold value comprises:

for a kth threshold value in the n threshold values, calculating an average value of signal qualities of the kth group of beams, of which the signal quality reaches the kth threshold value at most, and determining the average value as a signal quality component corresponding to the kth threshold value, where k is an integer less than or equal to n;

and determining the weighted sum of the signal quality component corresponding to each of the n threshold values and the weighting factor as the cell signal quality of the cell.
The method of claim 3, further comprising:

for an ith threshold value in the n threshold values, if there is no beam with the signal quality reaching the ith threshold value at the maximum and there is a jth group of beams with the signal quality reaching the jth threshold value at the maximum, calculating an average value of the signal quality of the jth group of beams, and determining the average value as a signal quality component corresponding to the ith threshold value;

and the jth threshold value is smaller than the ith threshold value, and i and j are integers smaller than n.
The method of claim 3, further comprising:

and for the ith threshold value in the n threshold values, if no beam with the signal quality reaching the ith threshold value at the maximum exists, determining the quality of a preset reference signal as a signal quality component corresponding to the ith threshold value, wherein i is an integer less than or equal to n.
The method of claim 1, wherein said determining the cell signal quality of the cell based on the signal quality of each of the beams, the n threshold values, and the weight factors comprises:

and determining the cell signal quality of the cell according to the signal quality of each beam, the threshold value reached by the signal quality of each beam and the weight factor corresponding to the threshold value.
The method according to claim 6, wherein said determining the cell signal quality of the cell according to the signal quality of each of the beams, the threshold value reached by the signal quality of each of the beams, and the weighting factor corresponding to the threshold value comprises:

for a k threshold value of the n threshold values, calculating an average value of the signal qualities of the k group of beams of which the signal qualities reach the k threshold value, and determining the average value as a signal quality component corresponding to the k threshold value, wherein k is an integer less than or equal to n;

and determining the weighted sum of the signal quality component corresponding to each of the n threshold values and the weighting factor as the cell signal quality of the cell.
The method of claim 7, further comprising:

for an ith threshold value in the n threshold values, if there is no beam with the signal quality reaching the ith threshold value and there is a jth group of beams with the signal quality reaching the jth threshold value, determining an average value of the signal quality of the jth group of beams as a signal quality component corresponding to the ith threshold value;

and the jth threshold value is smaller than the ith threshold value, and i and j are integers smaller than n.
The method of claim 7, further comprising:

and for the ith threshold value in the n threshold values, if no beam with the signal quality reaching the ith threshold value exists, determining the quality of a preset reference signal as a signal quality component corresponding to the ith threshold value, wherein i is an integer less than or equal to n.
The method according to claim 5 or 9,

each threshold value in the n threshold values corresponds to respective preset reference signal quality;

or the like, or, alternatively,

at least two thresholds among the n thresholds correspond to different preset reference signal qualities;

or the like, or, alternatively,

each of the n threshold values shares the same preset reference signal quality.
The method according to any one of claims 1 to 9, wherein the sum of the weighting factors corresponding to the n threshold values is 1.
The method according to any one of claims 1 to 9,

the terminal receives system information;

and the terminal acquires the n threshold values and the weight factor corresponding to each threshold value from the system information.
The method according to any of claims 1 to 9, wherein the cells comprise a serving cell where the terminal resides and a neighboring cell of the serving cell;

the method further comprises the following steps:

and performing cell reselection according to the cell signal quality of the serving cell and the cell signal quality of the adjacent cell.
A method for cell signal quality determination, the method comprising:

the access network equipment determines n threshold values and a weight factor corresponding to each threshold value;

the access network equipment sends the n threshold values and the weight factors corresponding to the threshold values to a terminal, and the n threshold values and the weight factors corresponding to the threshold values are used as parameters when the terminal determines the cell signal quality;

wherein n is an integer greater than 1.
The method of claim 14, wherein the sending, by the access network device, the n threshold values and the weight factor corresponding to each threshold value to the terminal comprises:

and the access network equipment sends system information to the terminal, wherein the system information carries the n threshold values and the weight factors corresponding to the threshold values.
The method of claim 14, wherein the sum of the weighting factors corresponding to the n threshold values is 1.
An apparatus for determining signal quality of a cell, the apparatus comprising:

a receiving module, configured to receive n threshold values and a weight factor corresponding to each of the threshold values;

the processing module is used for measuring the signal quality of m wave beams belonging to the same cell;

the processing module is further configured to determine a cell signal quality of the cell according to the signal quality of each beam, the n threshold values, and the weight factor;

wherein m and n are both integers and n is greater than 1.
The apparatus of claim 17,

the processing module is further configured to determine the cell signal quality of the cell according to the signal quality of each beam, a maximum threshold value reached by the signal quality of each beam, and the weight factor corresponding to the maximum threshold value.
The apparatus of claim 18,

the processing module is further configured to calculate, for a kth threshold value of the n threshold values, an average value of signal qualities of kth beams, where the signal quality of the kth beams reaches the kth threshold value at the maximum, and determine the average value as a signal quality component corresponding to the kth threshold value, where k is an integer less than or equal to n;

and determining the weighted sum of the signal quality component corresponding to each of the n threshold values and the weighting factor as the cell signal quality of the cell.
The apparatus of claim 19,

the processing module is further configured to, for an ith threshold value of the n threshold values, determine an average value of signal qualities of jth beams as a signal quality component corresponding to the ith threshold value if the beam having the largest signal quality reaching the ith threshold value does not exist and the jth group of beams having the largest signal quality reaching the jth threshold value exists;

and the jth threshold value is smaller than the ith threshold value, and i and j are integers smaller than n.
The apparatus of claim 20,

the processing module is further configured to, for an ith threshold value of the n threshold values, determine a preset reference signal quality as a signal quality component corresponding to the ith threshold value if there is no beam whose signal quality reaches the ith threshold value at the maximum, where i is an integer less than or equal to n.
The apparatus of claim 17,

the processing module is further configured to determine the cell signal quality of the cell according to the signal quality of each beam, a threshold value reached by the signal quality of each beam, and the weight factor corresponding to the threshold value.
The apparatus of claim 22,

the processing module is further configured to calculate, for a kth threshold value of the n threshold values, an average value of signal qualities of kth group beams, where the signal quality reaches the kth threshold value, determine the average value as a signal quality component corresponding to the kth threshold value, and k is an integer less than or equal to n;

and determining the weighted sum of the signal quality component corresponding to each of the n threshold values and the weighting factor as the cell signal quality of the cell.
The apparatus of claim 23,

the processing module is further configured to, for an ith threshold value of the n threshold values, determine an average value of signal qualities of a jth group of beams as a signal quality component corresponding to the ith threshold value if the beam having the signal quality reaching the ith threshold value does not exist and the jth group of beams having the signal quality reaching the jth threshold value exists;

and the jth threshold value is smaller than the ith threshold value, and i and j are integers smaller than n.
The apparatus of claim 23,

the processing module is further configured to, for an ith threshold value of the n threshold values, determine a preset reference signal quality as a signal quality component corresponding to the ith threshold value if there is no beam whose signal quality reaches the ith threshold value, where i is an integer less than or equal to n.
The apparatus of claim 21 or 25,

each threshold value in the n threshold values corresponds to respective preset reference signal quality;

or the like, or, alternatively,

at least two thresholds among the n thresholds correspond to different preset reference signal qualities;

or the like, or, alternatively,

each of the n threshold values shares the same preset reference signal quality.
The apparatus according to any one of claims 17 to 25, wherein the sum of the weighting factors corresponding to the n threshold values is 1.
The apparatus of any one of claims 17 to 25,

the receiving module is used for receiving system information;

the processing module is further configured to obtain the n threshold values and a weight factor corresponding to each threshold value from the system information.
The apparatus according to any of claims 17 to 25, wherein the cells comprise a serving cell where the terminal resides and a neighboring cell of the serving cell;

the processing module is further configured to perform cell reselection according to the cell signal quality of the serving cell and the cell signal quality of the neighboring cell.
An apparatus for determining signal quality of a cell, the apparatus comprising:

the processing module is used for determining n threshold values and weight factors corresponding to the threshold values;

a sending module, configured to send the n threshold values and the weight factor corresponding to each threshold value to a terminal, where the n threshold values and the weight factor corresponding to each threshold value are used as parameters when the terminal determines the cell signal quality;

wherein n is an integer greater than 1.
The apparatus of claim 30,

the sending module is configured to send, by the access network device, system information to the terminal, where the system information carries the n thresholds and weight factors corresponding to each of the thresholds.
The apparatus of claim 30, wherein the sum of the weighting factors corresponding to the n threshold values is 1.
A terminal, characterized in that the terminal comprises a processor and a memory, the memory storing at least one instruction for execution by the processor to implement the cell signal quality determination method of any of the preceding claims 1 to 13.
An access network device, characterized in that the access network device comprises a processor and a memory, the memory storing at least one instruction for execution by the processor to implement the cell signal quality determination method of any of the preceding claims 14 to 16.
A computer-readable storage medium having stored thereon at least one instruction for execution by a processor to perform a method for cell signal quality determination as claimed in any one of claims 1 to 13.
A computer-readable storage medium having stored thereon at least one instruction for execution by a processor to perform a method for cell signal quality determination as claimed in any one of claims 14 to 16.
A communication system, the system comprising: a terminal and an access network device;

the terminal comprising the apparatus of any of claims 17 to 29, the access network device comprising the apparatus of any of claims 30 to 32;

or;

the terminal is a terminal according to claim 33 and the access network device is an access network device according to claim 34.