CN112448776A - Channel quality measuring method of communication system, terminal and base station - Google Patents
Channel quality measuring method of communication system, terminal and base station Download PDFInfo
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Abstract
The embodiment of the invention provides a channel quality measuring method, a terminal and a base station of a communication system, aiming at all sub-bands in a working frequency band of the communication system, the base station divides all sub-bands to obtain a plurality of measuring resource groups, the CQI of all sub-bands in the base station is measured by taking the measuring resource groups as a unit, the CQI corresponding to the measuring resource groups is determined, the CQI of all sub-bands in the measuring resource groups is represented by the CQI corresponding to the measuring resource groups, so that the base station can master the channel quality of all sub-bands in the working frequency band of the communication system, the measurement and transmission of the channel quality of all sub-bands in the working frequency band by the terminal are realized, a basis is provided for the base station to carry out frequency resource allocation, the anti-interference capability of the communication system is improved.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a channel quality measurement method, a terminal, and a base station for a communication system.
Background
A broadband transmission system based on discrete narrow-band aggregation in the existing wireless communication system is suitable for a narrow-band planning frequency band, can realize random aggregation use of narrow-band resources, realizes broadband transmission, and flexibly meets the transmission requirements of different broadband services. A Downlink Shared Channel (PDSCH) is designed for a wideband transmission system based on discrete narrowband aggregation, and is used for transmitting Downlink service data of a user. The frequency resource specifically used by the PDSCH for transmitting the downlink service data of the user is dynamically selected and scheduled by the base station, and the base station determines the modulation and coding mode used by the channel according to the channel quality, so that the wireless resource is effectively utilized. The base station obtains the Channel Quality of the PDSCH through a Channel Quality Indication (CQI) of the PDSCH measured and transmitted by the terminal, and the subband (i.e., narrowband frequency point) in the wideband transmission system is used as the granularity of resource usage and scheduling to carry the PDSCH. The terminal determines a corresponding CQI by measuring a signal to Interference plus Noise ratio (SINR) of the downlink reference signal of each subband. Fig. 1 is a schematic structural diagram of a downlink reference signal of one subband of a wideband transmission system based on discrete narrowband aggregation, and only one frame (frame) of one subband (subband) is shown in fig. 1. One frame includes 5 subframes (subframes), which are subframe 0, subframe 1, subframe 2, subframe 3, and subframe 4. While one frame includes a downlink (downlink) and an uplink (uplink) with a gap (gp) in between. A Physical Downlink Control Channel (PDCCH) or PDSCH exists in the Downlink.
In the current system, a terminal calculates SINR in one downlink on all sub-bands of a current PDSCH, determines a corresponding CQI according to the SINR, and reports the CQI to a Media Access Control (MAC) layer. The CQI reporting supports periodic triggering, and when the reporting period of the CQI reaches, the CQI reporting is triggered. However, the terminal measures only the SINR of the PDSCH working subband used for its current data transmission and performs CQI feedback. If the sub-band used by the current data transmission is interfered, the base station cannot schedule the terminal to the sub-band with better channel quality in time because the base station does not know the channel quality of other sub-bands, and therefore performance requirements such as reliability and time delay of service transmission may not be guaranteed.
Therefore, it is urgently needed to provide a channel quality measurement method of a communication system, a terminal and a base station.
Disclosure of Invention
In order to overcome the above problems or at least partially solve the above problems, embodiments of the present invention provide a channel quality measurement method, a terminal, and a base station for a communication system.
In a first aspect, an embodiment of the present invention provides a method for measuring channel quality in a communication system, including:
acquiring all sub-bands in a working frequency band of a communication system;
respectively measuring channel quality indicator CQI of all sub-bands in each measuring resource group based on a plurality of measuring resource groups obtained by dividing all sub-bands by a base station;
and determining the CQI corresponding to each measurement resource group according to the CQI of each sub-band in each measurement resource group, and reporting the CQI corresponding to each measurement resource group to the base station.
Preferably, the measuring the channel quality indicator CQI of all subbands in each measurement resource group respectively includes:
sequencing all the measurement resource groups based on a preset sequencing mode, and determining a sequencing result;
and sequentially measuring the CQI of all sub-bands in each measurement resource group in the sequencing result according to the sequence.
Preferably, the sorting all the measurement resource groups based on the preset sorting mode to determine the sorting result specifically includes:
continuously numbering all the measurement resource groups;
selecting one measurement resource group from all measurement resource groups as a first measurement resource group in the sequencing result;
and determining the numbers of all the measurement resource groups in the sequencing result based on the number of the first measurement resource group and the number of all the measurement resource groups.
Preferably, the determining the numbers of all measurement resource groups in the sequencing result based on the number of the first measurement resource group and the number of all measurement resource groups specifically includes:
determining the number of all measurement resource groups in the sequencing result based on the following formula:
F(n)＝(s+f(n))modN；
wherein, f (N) is the number of the (N + 1) th measurement resource group in the sequencing result, s is the number of the 1 st measurement resource group in the sequencing result, N is the number of all measurement resource groups, mod is a remainder operation, and the value range of N is from 0 to (N-1);
if N is judged to be an even number, f (N) is determined by the following formula:
if N is judged to be odd, f (N) is determined by the following formula:
wherein the content of the first and second substances,
represents the largest integer no greater than nmodN,
represents the largest integer not greater than (nmodN)/2,
represents the largest integer no greater than N/2.
In a second aspect, an embodiment of the present invention provides a method for measuring channel quality in a communication system, including:
acquiring a Channel Quality Indicator (CQI) corresponding to each measurement resource group reported by a terminal; the measurement resource group is obtained by dividing all sub-bands in a working frequency band of the communication system by the base station, and the CQI corresponding to the measurement resource group is determined according to the CQI of each sub-band in each measurement resource group;
selecting a target sub-band from all the measurement resource groups based on the CQI corresponding to each measurement resource group;
and dispatching the terminal to the target sub-band for working.
Preferably, the channel quality measuring method of the communication system further includes:
arranging all sub-bands in the working frequency band of the communication system according to the sequence of frequency points from low to high or from high to low;
for all the arranged sub-bands, dividing each preset number of sub-bands into a measurement resource group;
and if the fact that the remainder exists when the total number of all the sub-bands is divided by the preset number is judged and obtained, taking the rest sub-bands as a measurement resource group.
In a third aspect, an embodiment of the present invention provides a terminal, including: the device comprises a sub-band acquisition module, a CQI measurement module and a reporting module. Wherein the content of the first and second substances,
the sub-band obtaining module is used for obtaining all sub-bands in the working frequency band of the communication system;
the CQI measurement module is used for respectively measuring the channel quality indicator CQI of all the sub-bands in each measurement resource group based on a plurality of measurement resource groups obtained by dividing all the sub-bands by the base station;
and the reporting module is used for determining the CQI corresponding to each measurement resource group according to the CQI of each sub-band in each measurement resource group and reporting the CQI corresponding to each measurement resource group to the base station.
In a fourth aspect, an embodiment of the present invention provides a base station, including: the system comprises a CQI acquisition module, a target sub-band selection module and a scheduling module. Wherein the content of the first and second substances,
the CQI acquisition module is used for acquiring channel quality indication CQI corresponding to each measurement resource group reported by the terminal; the measurement resource group is obtained by dividing all sub-bands in a working frequency band of the communication system by a dividing module in the base station, and the CQI corresponding to the measurement resource group is determined according to the CQI of each sub-band in each measurement resource group;
the target sub-band selection module is used for selecting a target sub-band from all the measurement resource groups based on the CQI corresponding to each measurement resource group;
and the scheduling module is used for scheduling the terminal to the target sub-band for working.
In a fifth aspect, an embodiment of the present invention provides an electronic device, including:
at least one processor, at least one memory, a communication interface, and a bus; wherein the content of the first and second substances,
the processor, the memory and the communication interface complete mutual communication through the bus;
the memory stores program instructions executable by the processor, and the processor invokes the program instructions to perform the channel quality measurement method of the communication system provided by the first aspect or the second aspect.
In a sixth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions for causing the computer to execute the channel quality measurement method of the communication system provided in the first aspect or the second aspect.
The embodiment of the invention provides a channel quality measuring method, a terminal and a base station of a communication system, aiming at all sub-bands in a working frequency band of the communication system, based on a plurality of measuring resource groups obtained by dividing all sub-bands by the base station, measuring CQI of all sub-bands in the base station by taking the measuring resource groups as a unit, determining the CQI corresponding to the measuring resource groups, and representing the CQI of all sub-bands in the measuring resource groups by the CQI corresponding to the measuring resource groups, so that the base station can master the channel quality of all sub-bands in the working frequency band of the communication system, the measurement and transmission of the channel quality of all sub-bands in the working frequency band by the terminal are realized, and a basis is provided for the base station to carry out frequency resource allocation, thereby improving the anti-interference capability of the communication.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a downlink reference signal of a sub-band of a wideband transmission system based on discrete narrowband aggregation in the prior art;
fig. 2 is a flowchart illustrating a channel quality measurement method of a communication system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a ranking result obtained before ranking and based on a preset ranking mode in a channel quality measurement method of a communication system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a ranking result obtained before ranking and based on a preset ranking mode in a channel quality measurement method of a communication system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a ranking result obtained before ranking and based on a preset ranking mode in a channel quality measurement method of a communication system according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating a channel quality measurement method of a communication system according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
As shown in fig. 2, a schematic flow chart of a method for measuring channel quality of a communication system according to an embodiment of the present invention specifically includes:
s21, acquiring all sub-bands in the working frequency band of the communication system;
s22, based on a plurality of measurement resource groups obtained by dividing all sub-bands by the base station, respectively measuring the channel quality indicator CQI of all sub-bands in each measurement resource group;
s23, determining the CQI corresponding to each measurement resource group according to the CQI of each sub-band in each measurement resource group, and reporting the CQI corresponding to each measurement resource group to the base station.
Specifically, in the embodiment of the present invention, the communication system refers to a wideband transmission system based on discrete narrowband aggregation, and a structure of a downlink reference signal of one subband is shown in fig. 1. In order to solve the problem that in the prior art, performance requirements such as reliability and time delay of service transmission cannot be guaranteed when a sub-band used for current data transmission is interfered due to the fact that Channel Quality Indication (CQI) of a working sub-band in a working frequency band is measured and fed back only, a Channel Quality measuring method of a communication system is provided. In the channel quality measurement method of the communication system provided in the embodiment of the present invention, the execution subject is a terminal, and the specific process is as follows.
Step S21 is executed first, and the terminal acquires all sub-bands in the operating frequency band of the communication system. It is assumed that there are Y (Y is a positive integer) subbands in the operating frequency band of the communication system, i.e., the total number of all subbands is Y. Because each sub-band corresponds to a frequency band, each frequency band can be represented by a frequency point, after the terminal acquires Y sub-bands, the Y sub-bands can be numbered from 0 to Y-1 according to the frequency point from low to high so as to execute the subsequent steps.
Then, step S22 is executed, and the terminal measures the channel quality indicator CQI of all sub-bands in each measurement resource group respectively based on the multiple measurement resource groups obtained by dividing all sub-bands by the base station. The base station can send a plurality of measurement resource groups obtained by dividing all the sub-bands to the terminal by sending signaling to the terminal, so that the terminal can measure the Channel Quality Indicator (CQI) of all the sub-bands in each measurement resource group respectively. The measurement resource group refers to a set of several sub-bands, and the sub-bands in each measurement resource group may specifically be several sub-bands with consecutive frequency points. The number of subbands in each measurement resource group may be the same or different, and specifically, the base station may perform configuration according to the total number of all subbands and the bandwidth of the operating frequency band, which is not specifically limited in this embodiment of the present invention. When the number of subbands in each measurement resource group is the same, the base station may divide each preset number of subbands in all subbands into one measurement resource group, where the preset number may be one or multiple, and this is not specifically limited in this embodiment of the present invention. If the preset number is X (X is a positive integer), the number of measurement resource groups obtained by dividing Y subbands by the base station is:
wherein, N is the number of the measurement resource groups, and N is more than or equal to 1.
Represents the largest integer not less than Y/X.
When an integer number X exists in Y, X subbands exist in each measurement resource group, and when a non-integer number X exists in Y, the number of subbands in one measurement resource group is less than X.
It should be noted that, the CQI corresponds to a signal to Interference plus Noise ratio (SINR) of the channel, and the CQI measurement method adopted by the terminal when performing CQI measurement may be implemented by the prior art, which is not specifically limited in the embodiment of the present invention.
And finally, executing the step S23, determining the CQI corresponding to each measurement resource group by the terminal according to the CQI of each sub-band in each measurement resource group, and reporting the CQI corresponding to each measurement resource group to the base station. In the embodiment of the present invention, one CQI corresponds to each measurement resource group, and can be used to characterize the CQI of each sub-band in each measurement resource group. Because each measurement resource group comprises a plurality of sub-bands, when the CQI corresponding to each measurement resource group is determined, taking the measurement resource group a as an example, the maximum CQI can be selected from the CQIs of all sub-bands in the measurement resource group a as the CQI corresponding to the measurement resource group a; the CQI average value of all sub-bands in the measurement resource group a can be obtained and used as the CQI corresponding to the measurement resource group a; the weight of each sub-band in the measurement resource group a can also be introduced, then the weighted CQI of all sub-bands in the measurement resource group a is determined based on the weight of each sub-band and the CQI of each sub-band, and the weighted CQI is used as the CQI corresponding to the measurement resource group a; the CQI corresponding to each measurement resource group may also be determined in other manners, which is not specifically limited in this embodiment of the present invention. In particular, when there is only one sub-band in the measurement resource group, the CQI of the sub-band can be directly used as the CQI corresponding to the measurement resource group.
When the terminal reports the CQI corresponding to each measurement resource group to the base station, the reporting mode may be set according to the needs of the base station, for example, the base station may set a periodic reporting mode or a non-periodic reporting mode, and send a signaling to the terminal, and send the set reporting mode to the terminal, so that the terminal reports the CQI corresponding to each measurement resource group according to the set reporting mode. When the base station sets a periodic reporting mode, the base station can further set a reporting period, and then the terminal reports the measured CQI corresponding to all measurement resource groups at the same time when each reporting period arrives. When the aperiodic reporting mode is selected, a reporting criterion may be set, and when the reporting criterion is satisfied, CQIs corresponding to all measured resource groups obtained by measurement may be reported simultaneously, for example, the CQI obtained by measurement may be greater than the CQI of the current working subband of the terminal as the reporting criterion.
After the terminal reports the CQI corresponding to each measurement resource group to the base station, when the current working subband of the terminal is interfered, the base station can select a subband with channel quality meeting the requirement as the working subband of the terminal according to the CQI corresponding to each measurement resource group reported by the terminal.
The channel quality measuring method of the communication system provided by the embodiment of the invention is used for measuring the CQI of all sub-bands in the working frequency band of the communication system by taking the measuring resource group as a unit and determining the CQI corresponding to the measuring resource group aiming at all the sub-bands in the working frequency band of the communication system based on a plurality of measuring resource groups obtained by dividing all the sub-bands by a base station, and the CQI corresponding to the measuring resource group represents the CQI of all the sub-bands in the measuring resource group, so that the base station can master the channel quality of all the sub-bands in the working frequency band of the communication system, the measurement and transmission of the channel quality of all the sub-bands in the working frequency band by the terminal are realized, a basis is provided for the base station to carry out frequency resource allocation.
On the basis of the foregoing embodiment, the method for measuring channel quality of a communication system provided in the embodiment of the present invention, which measures channel quality indicators CQI of all subbands in each measurement resource group respectively, specifically includes:
sequencing all the measurement resource groups based on a preset sequencing mode, and determining a sequencing result;
and sequentially measuring the CQI of all sub-bands in each measurement resource group in the sequencing result according to the sequence.
Specifically, no matter which reporting mode is selected, the reporting time and the CQI measurement processes corresponding to all measurement resource groups will affect the sub-band allocation work of the base station. Taking a periodic reporting mode as an example, assuming that all sub-bands in a working frequency band of a communication system can be divided into 8 measurement resource groups, when the reporting period is less than the total time of CQI measurement, a terminal may only measure CQIs corresponding to 3 measurement resource groups in the reporting period, and at this time, if a mode of sequencing according to the heights of frequency points is still adopted, the measured CQIs may have insignificant frequency difference due to the proximity of the frequency points, so that a base station cannot allocate a sub-band with better channel quality to the terminal according to the received CQIs when the current working sub-band of the terminal is interfered. Therefore, all measurement resource groups need to be sorted, so that adjacent measurement resource groups in the sorting result have obvious frequency difference.
When the terminal measures the CQIs of all the sub-bands in each measurement resource group, the terminal may determine the measurement sequence of each measurement resource group first, and then determine the measurement sequence of each sub-band in each measurement resource group. The measurement sequence of each measurement resource group can be set as required, for example, the measurement sequence can be determined according to the frequency point height corresponding to the sub-band in the measurement resource group and the frequency point from low to high or from high to low; the measurement sequence can also be determined according to the sequence of the measurement resource group division; the method can also sequence all the measurement resource groups based on a preset sequencing mode to determine the measurement sequence; the measurement sequence may also be determined in other manners, which are not specifically limited in the embodiments of the present invention. The measurement sequence of each sub-band in each measurement resource group can also be set according to needs, for example, the measurement sequence can be determined according to the frequency point height corresponding to each sub-band and the frequency point from low to high or from high to low; the measurement sequence may also be determined in other manners, which are not specifically limited in the embodiments of the present invention.
In the embodiment of the invention, when the CQI of all sub-bands in each measurement resource group is measured respectively, all the measurement resource groups are sorted based on a preset sorting mode, and a sorting result is determined. The preset sequencing mode is a sequencing mode which needs to be met when all the measurement resource groups are sequenced, the preset sequencing mode is not simply sequenced according to the sequence of division of the measurement resource groups, is not simply sequenced according to the frequency point height of the measurement resource groups, but breaks the inherent sequencing mode, and is a new sequencing mode which is used for disordering the sequencing according to the frequency point height of the measurement resource groups. The preset ordering mode may be specifically determined by a similar frequency hopping technique. The sequencing results before sequencing and obtained based on the preset sequencing mode are shown in fig. 3, 8 measurement resource groups are in total in fig. 3, each measurement resource group before sequencing is generally sequenced according to the height of a frequency point, and is a, b, c, d, e, f, g and h in sequence, and the frequency points of two adjacent measurement resource groups are relatively close. And obtaining a sequencing result a, e, b, f, d, g, c and h based on a preset sequencing mode. Therefore, the frequency points of two adjacent measurement resource groups in the sequencing result obtained based on the preset sequencing mode are not close to each other any more.
In the embodiment of the invention, all the measurement resource groups are sequenced in a preset sequencing mode, so that the channel performance difference caused by the frequency difference of the adjacent measurement resource groups in the sequencing result can be reflected when all the measurement resource groups in the sequencing result are sequentially subjected to channel quality measurement, the base station can conveniently master the channel quality of each measurement resource group, a basis is provided for the base station to select frequency resources, and when the sub-band used for current data transmission is interfered, the base station can timely schedule the terminal to the sub-band with better channel quality, so that the anti-interference energy of a communication system can be improved, and the performance requirements of reliability, time delay and the like of service data transmission are ensured.
On the basis of the foregoing embodiment, the method for measuring channel quality of a communication system according to the present invention ranks all measurement resource groups based on a preset ranking mode, and determines a ranking result, which specifically includes:
continuously numbering all the measurement resource groups;
selecting one measurement resource group from all measurement resource groups as a first measurement resource group in the sequencing result;
and determining the numbers of all the measurement resource groups in the sequencing result based on the number of the first measurement resource group and the number of all the measurement resource groups.
Specifically, in the embodiment of the present invention, when all measurement resource groups are sorted by a preset sorting manner and a sorting result is determined, all measurement resource groups are numbered consecutively, for example, N measurement resource groups are total, and 0 to N-1 are respectively used for consecutive numbering. And then selecting one measurement resource group from all the measurement resource groups as the first measurement resource group in the sequencing result. In the selecting, a measurement resource group with a number s may be selected randomly, for example, as a first measurement resource group in the sorting result, where s has a value ranging from 0 to N-1. And when the value of s is 0, the measurement resource group with the original number of 0 is taken as the first measurement resource group in the sequencing result.
And finally, determining the numbers of all the measurement resource groups in the sequencing result according to the number of the first measurement resource group and the number of all the measurement resource groups. Specifically, the number of each measurement resource group in the sequencing result can be determined by combining the number of the first measurement resource group and the number of all measurement resource groups with four-rule mixed operation.
According to the channel quality measuring method of the communication system provided by the embodiment of the invention, the measuring resource groups are numbered continuously, and the measuring resource blocks are sequenced through the numbers of the measuring resource blocks, so that the sequencing time can be shortened, and the sequencing cost can be saved.
On the basis of the foregoing embodiment, the method for measuring channel quality of a communication system provided in the embodiment of the present invention, where the determining, based on the number of the first measurement resource group and the number of all measurement resource groups, the numbers of all measurement resource groups in the ranking result specifically includes:
determining the number of all measurement resource groups in the sequencing result based on the following formula (2):
F(n)＝(s+f(n))modN； (2)
wherein, f (N) is the number of the (N + 1) th measurement resource group in the sequencing result, s is the number of the 1 st measurement resource group in the sequencing result, N is the number of all measurement resource groups, mod is a remainder operation, and the value range of N is from 0 to (N-1);
if N is judged to be an even number, f (N) is determined by the following formula (3):
if N is judged to be odd, f (N) is determined by the following formula (4):
wherein the content of the first and second substances,
represents the largest integer no greater than nmodN,
represents the largest integer not greater than (nmodN)/2,
represents the largest integer no greater than N/2.
Specifically, in the embodiment of the present invention, in consideration that the channel characteristics may differ due to the difference in frequency, in order to facilitate the base station to quickly determine a suitable frequency resource for scheduling, a measurement resource group is selected, and a similar frequency hopping technique is adopted, so as to obtain channel performances on different frequencies according to a corresponding sequence. Determining the order may be performed by sorting the measurement resource groups and sequentially performing channel quality measurement according to the sorting result, and sorting the measurement resource groups may be performed by formula (2). It should be noted that, the numbers of all measurement resource groups are from 0 to (N-1), the number of the 1 st measurement resource group is 0, the number of the 2 nd measurement resource group is 1, and so on, and the number of the nth measurement resource group is N-1. Therefore, F (n) is the number of the (n + 1) th measurement resource group in the sequencing result, F (0) is the number of the 1 st measurement resource group in the sequencing result, i.e. s, F (1) is the number of the 2 nd measurement resource group in the sequencing result, and so on.
As shown in fig. 4, a schematic structural diagram is shown in a form of numbers for the pre-sorting and the sorting results, where in fig. 4, the value of N is 8, and the value of s is 0, and the numbers before sorting are sequentially 0, 1, 2, 3, 4, 5, 6, and 7, and the number of each measurement resource group in the sorting results is determined according to formula (2), and the numbers of each measurement resource group in the sorting results are respectively 0, 4, 1, 5, 2, 6, 3, and 7.
As shown in fig. 5, a schematic structural diagram is shown in a form of numbers for the pre-sorting and the sorting results, where in fig. 5, a value of N is 9, and a value of s is 0, and numbers before sorting are sequentially 0, 1, 2, 3, 4, 5, 6, 7, and 8, and a number of each measurement resource group in the sorting results is determined according to formula (2), and numbers of each measurement resource group in the sorting results are respectively 0, 4, 8, 3, 7, 2, 6, 1, and 5.
In the embodiment of the invention, the method for determining the numbers of all the measurement resource groups in the sequencing result is provided, and the sequencing of all the measurement resource groups is obtained through F (n), so that the sequencing of all the measurement resource groups is more convenient and faster.
As shown in fig. 6, on the basis of the foregoing embodiment, an embodiment of the present invention provides a method for measuring channel quality of a communication system, including:
s61, acquiring a Channel Quality Indicator (CQI) corresponding to each measurement resource group reported by the terminal; the measurement resource group is obtained by dividing all sub-bands in a working frequency band of the communication system by the base station, and the CQI corresponding to the measurement resource group is determined according to the CQI of each sub-band in each measurement resource group;
s62, selecting target sub-bands from all the measurement resource groups based on the CQI corresponding to each measurement resource group;
and S63, dispatching the terminal to the target sub-band for working.
Specifically, in the method for measuring channel quality of a communication system provided in the embodiment of the present invention, an execution subject is a base station, a working scenario of the base station is that a current working subband of a terminal is interfered and cannot normally transmit data, and the base station needs to schedule the terminal to a target subband with good channel quality; or the channel quality of the current working sub-band of the terminal is poor, and the base station needs to schedule the terminal to the target sub-band with better channel quality.
And after the terminal reports the CQI corresponding to each measurement resource group, the base station receives the CQI corresponding to each measurement resource group reported by the terminal. The measurement resource group is obtained by dividing all sub-bands in the working frequency band of the communication system by the base station, the CQI corresponding to the measurement resource group is determined according to the CQI of each sub-band in each measurement resource group, and the specific division method and the determination method of the CQI corresponding to each measurement resource group are referred to the above embodiments, which are not described again in the embodiments of the present invention.
Then, the base station selects a target sub-band from all the measurement resource groups based on the CQI corresponding to each measurement resource group. The number of target subbands may be one or multiple, and may be specifically determined by the amount of transmission data. The specific selection manner of the target subband may be set according to needs, which is not specifically limited in the embodiment of the present invention. For example, a measurement resource group corresponding to the maximum CQI may be selected, and a subband may be randomly selected from the selected measurement resource group as a target subband; when the terminal does not need the sub-band with the best channel quality for data transmission, a measurement resource group corresponding to the appropriate CQI can be selected according to the requirement of the terminal, and the sub-band is randomly selected from the selected measurement resource group to serve as a target sub-band; and the requirement of other terminals can be combined, a measurement resource group corresponding to the proper CQI is comprehensively selected from the channel quality of the whole communication system, and a sub-band is randomly selected from the selected measurement resource group to serve as a target sub-band.
Finally, after determining the target sub-band, the base station schedules the terminal to the target sub-band for data transmission and other works, that is, the target sub-band is allocated to the terminal as a working sub-band of the terminal.
In the channel quality measurement method for the communication system provided by the embodiment of the invention, the base station selects the target sub-band from all the measurement resource groups based on the CQI corresponding to each measurement resource group reported by the terminal, and schedules the terminal to work on the target sub-band. The base station can realize reasonable distribution of frequency resources, thereby improving the anti-interference capability of a communication system and meeting the performance requirement of service data transmission.
On the basis of the foregoing embodiment, the method for measuring channel quality of a communication system provided in the embodiment of the present invention further includes:
arranging all sub-bands in the working frequency band of the communication system according to the sequence of frequency points from low to high or from high to low;
for all the arranged sub-bands, dividing each preset number of sub-bands into a measurement resource group;
and if the fact that the remainder exists when the total number of all the sub-bands is divided by the preset number is judged and obtained, taking the rest sub-bands as a measurement resource group.
Specifically, in the channel quality measurement method for the communication system provided in the embodiment of the present invention, when the base station divides all the subbands into a plurality of measurement resource groups, all the subbands are first arranged according to the order of frequency points from low to high or from high to low, and for convenience of subsequent measurement, all the arranged subbands may be numbered continuously. If the total number of all the sub-bands is Y, all the sub-bands may be numbered from 0 to (Y-1) in the order of frequency points from low to high.
Then, for all subbands numbered 0 to (Y-1), X subbands are divided into one measurement resource group per a preset number, starting with the subband numbered 0. When the total number of all the sub-bands is divided by the preset number without remainder, namely, an integer number X exists in Y, X sub-bands exist in each measurement resource group, and when the total number of all the sub-bands is divided by the preset number with remainder, namely, a non-integer number X exists in Y, the number of the sub-bands in the last measurement resource group obtained by dividing is less than X.
In the embodiment of the invention, the base station arranges all the sub-bands in the sequence of the frequency points from low to high, so that the frequency difference of the sequencing result obtained after sequencing all the measurement resource groups by the subsequent terminal based on the preset sequencing mode can be ensured.
As shown in fig. 7, on the basis of the foregoing embodiment, an embodiment of the present invention provides a terminal, including: a sub-band obtaining module 71, a CQI measuring module 72 and a reporting module 73. Wherein the content of the first and second substances,
the subband obtaining module 71 is configured to obtain all subbands in the working frequency band of the communication system;
the CQI measurement module 72 is configured to measure channel quality indicators CQI of all sub-bands in each measurement resource group respectively based on a plurality of measurement resource groups obtained by dividing all sub-bands by the base station;
the reporting module 73 is configured to determine a CQI corresponding to each measurement resource group according to the CQI of each sub-band in each measurement resource group, and report the CQI corresponding to each measurement resource group to the base station.
Specifically, the terminal in the embodiment of the present invention is actually a channel quality measurement apparatus of a communication system, where the functions of each module correspond to each step in the above method class embodiments in which the terminal is used as an execution main body one to one, and the implemented effects are also consistent, which is not described again in the embodiment of the present invention.
As shown in fig. 8, on the basis of the foregoing embodiment, an embodiment of the present invention provides a base station, including: a CQI obtaining module 81, a target subband selecting module 82 and a scheduling module 83. Wherein the content of the first and second substances,
the CQI obtaining module 81 is configured to obtain a channel quality indicator CQI corresponding to each measurement resource group reported by the terminal; the measurement resource group is obtained by dividing all sub-bands in a working frequency band of the communication system by a dividing module in the base station, and the CQI corresponding to the measurement resource group is determined according to the CQI of each sub-band in each measurement resource group;
the target subband selecting module 82 is configured to select a target subband from all measurement resource groups based on the CQI corresponding to each measurement resource group;
the scheduling module 83 is configured to schedule the terminal to work on the target subband.
Specifically, the base station in the embodiment of the present invention is also a channel quality measurement apparatus of a communication system, where the functions of each module correspond to each step in the above method class embodiments that use the base station as an execution main body one to one, and the implemented effect is also consistent, which is not described again in the embodiment of the present invention.
On the basis of the foregoing embodiments, an embodiment of the present invention provides a base station, where a partitioning module in the base station is specifically configured to:
arranging all sub-bands in the working frequency band of the communication system according to the sequence of frequency points from low to high or from high to low;
for all the arranged sub-bands, dividing each preset number of sub-bands into a measurement resource group;
and if the fact that the remainder exists when the total number of all the sub-bands is divided by the preset number is judged and obtained, taking the rest sub-bands as a measurement resource group.
On the basis of the foregoing embodiment, as shown in fig. 9, a schematic structural diagram of an electronic device provided in an embodiment of the present invention is shown, where the electronic device in the embodiment of the present invention includes: a processor (processor)901, a memory (memory)902, a communication Interface (Communications Interface)903, and a bus 904; wherein the content of the first and second substances,
the processor 901, the memory 902 and the communication interface 903 are communicated with each other through a bus 904. The memory 902 stores program instructions executable by the processor 901, and the processor 901 is configured to call the program instructions in the memory 902 to perform the channel quality measurement method of the communication system provided by the above-mentioned embodiments of the methods.
The logic instructions in memory 902 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone article of manufacture. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
On the basis of the above embodiments, the present invention provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the channel quality measurement method of a communication system provided by the above method embodiments.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units 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. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will 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 technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for measuring channel quality in a communication system, comprising:
acquiring all sub-bands in a working frequency band of a communication system;
respectively measuring channel quality indicator CQI of all sub-bands in each measuring resource group based on a plurality of measuring resource groups obtained by dividing all sub-bands by a base station;
and determining the CQI corresponding to each measurement resource group according to the CQI of each sub-band in each measurement resource group, and reporting the CQI corresponding to each measurement resource group to the base station.
2. The method for measuring channel quality in a communication system according to claim 1, wherein the separately measuring channel quality indicators CQI of all subbands in each measurement resource group specifically includes:
sequencing all the measurement resource groups based on a preset sequencing mode, and determining a sequencing result;
and sequentially measuring the CQI of all sub-bands in each measurement resource group in the sequencing result according to the sequence.
3. The method for measuring channel quality of a communication system according to claim 2, wherein the sorting all the measurement resource groups based on a preset sorting manner and determining the sorting result specifically comprises:
continuously numbering all the measurement resource groups;
selecting one measurement resource group from all measurement resource groups as a first measurement resource group in the sequencing result;
and determining the numbers of all the measurement resource groups in the sequencing result based on the number of the first measurement resource group and the number of all the measurement resource groups.
4. The method for measuring channel quality in a communication system according to claim 3, wherein the determining the numbers of all the measurement resource groups in the ranking result based on the number of the first measurement resource group and the number of all the measurement resource groups specifically comprises:
determining the number of all measurement resource groups in the sequencing result based on the following formula:
F(n)＝(s+f(n))modN；
wherein, f (N) is the number of the (N + 1) th measurement resource group in the sequencing result, s is the number of the 1 st measurement resource group in the sequencing result, N is the number of all measurement resource groups, mod is a remainder operation, and the value range of N is from 0 to (N-1);
if N is judged to be an even number, f (N) is determined by the following formula:
if N is judged to be odd, f (N) is determined by the following formula:
wherein the content of the first and second substances,
represents the largest integer no greater than nmodN,
represents the largest integer not greater than (nmodN)/2,
represents the largest integer no greater than N/2.
5. A method for measuring channel quality in a communication system, comprising:
acquiring a Channel Quality Indicator (CQI) corresponding to each measurement resource group reported by a terminal; the measurement resource group is obtained by dividing all sub-bands in a working frequency band of the communication system by the base station, and the CQI corresponding to the measurement resource group is determined according to the CQI of each sub-band in each measurement resource group;
selecting a target sub-band from all the measurement resource groups based on the CQI corresponding to each measurement resource group;
and dispatching the terminal to the target sub-band for working.
6. The method of measuring channel quality in a communication system according to claim 5, further comprising:
arranging all sub-bands in the working frequency band of the communication system according to the sequence of frequency points from low to high or from high to low;
for all the arranged sub-bands, dividing each preset number of sub-bands into a measurement resource group;
and if the fact that the remainder exists when the total number of all the sub-bands is divided by the preset number is judged and obtained, taking the rest sub-bands as a measurement resource group.
7. A terminal, comprising:
the subband obtaining module is used for obtaining all subbands in the working frequency band of the communication system;
the CQI measurement module is used for respectively measuring the channel quality indicator CQI of all the sub-bands in each measurement resource group based on a plurality of measurement resource groups obtained by dividing all the sub-bands by the base station;
and the reporting module is used for determining the CQI corresponding to each measurement resource group according to the CQI of each sub-band in each measurement resource group and reporting the CQI corresponding to each measurement resource group to the base station.
8. A base station, comprising:
the CQI acquisition module is used for acquiring the channel quality indication CQI corresponding to each measurement resource group reported by the terminal; the measurement resource group is obtained by dividing all sub-bands in a working frequency band of the communication system by a dividing module in the base station, and the CQI corresponding to the measurement resource group is determined according to the CQI of each sub-band in each measurement resource group;
the target sub-band selection module is used for selecting a target sub-band from all the measurement resource groups based on the CQI corresponding to each measurement resource group;
and the scheduling module is used for scheduling the terminal to the target sub-band for working.
9. An electronic device, comprising:
at least one processor, at least one memory, a communication interface, and a bus; wherein the content of the first and second substances,
the processor, the memory and the communication interface complete mutual communication through the bus;
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform a channel quality measurement method of a communication system according to any of claims 1-6.
10. A non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the channel quality measurement method of the communication system according to any one of claims 1 to 6.
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