CN108200650B - Resource allocation method and device - Google Patents
Resource allocation method and device Download PDFInfo
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- CN108200650B CN108200650B CN201611121772.6A CN201611121772A CN108200650B CN 108200650 B CN108200650 B CN 108200650B CN 201611121772 A CN201611121772 A CN 201611121772A CN 108200650 B CN108200650 B CN 108200650B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
Abstract
The invention discloses a resource allocation method and a device, wherein the method comprises the following steps: acquiring identification information of at least one internet of things cell, and calculating to obtain time domain offset indication information and/or frequency domain offset indication information of each internet of things cell based on the identification information of each internet of things cell; determining the time domain offset and/or the frequency domain offset of each cell of the internet of things based on the indication information of the time domain offset and/or the indication information of the frequency domain offset; and determining resource configuration information of a random access channel in each cell of the internet of things based on the time domain offset and/or the frequency domain offset of each cell of the internet of things, and sending the resource configuration information to the corresponding cell of the internet of things.
Description
Technical Field
The present invention relates to resource management technologies in the field of communications, and in particular, to a resource allocation method and apparatus.
Background
In the narrowband internet of things (NB-IoT), a random access channel is redesigned, which is greatly different from the design of the random access channel of the LTE system, such as sequence, resource configuration, multi-user multiplexing, and the like. In the existing narrowband internet of things, the design of a random access channel (NPRACH) enables users in different cells to have the possibility of using the same NPRACH time-frequency domain resource, and particularly when the users are at the edge of the cell, serious inter-cell PRACH interference can be caused.
Disclosure of Invention
The present invention is directed to a method and an apparatus for resource allocation, which are used to solve the above problems in the prior art.
In order to achieve the above object, the present invention provides a resource allocation method, including:
acquiring identification information of at least one internet of things cell, and calculating to obtain time domain offset indication information and/or frequency domain offset indication information of each internet of things cell based on the identification information of each internet of things cell;
determining the time domain offset and/or the frequency domain offset of each cell of the internet of things based on the indication information of the time domain offset and/or the indication information of the frequency domain offset;
and determining resource configuration information of a random access channel in each cell of the internet of things based on the time domain offset and/or the frequency domain offset of each cell of the internet of things, and sending the resource configuration information to the corresponding cell of the internet of things.
The invention provides a resource allocation device, comprising:
the indicating information calculating unit is used for acquiring the identification information of at least one Internet of things cell, and calculating the indicating information of time domain offset and/or the indicating information of frequency domain offset of each Internet of things cell based on the identification information of each Internet of things cell;
a resource calculating unit, configured to determine a time domain offset and/or a frequency domain offset of each internet of things cell based on the indication information of the time domain offset and/or the indication information of the frequency domain offset;
and the configuration unit is used for determining resource configuration information of a random access channel in each internet of things cell based on the time domain offset and/or the frequency domain offset of each internet of things cell and sending the resource configuration information to the corresponding internet of things cell.
According to the resource allocation method and device provided by the invention, when the resource allocation is carried out on the random access channel of the cell of the Internet of things, the identification information of each cell of the Internet of things is combined, and the corresponding time domain resource and/or frequency domain resource is obtained by calculation based on the identification information of each cell of the Internet of things. Therefore, different internet of things cells correspond to different identification information, and the same calculation method is adopted to inevitably correspond to different indication information of time domain resources and/or frequency domain resources, so that different time domain resources and/or frequency domain resources are determined for adjacent internet of things cells, and therefore, the configuration of NPRACH resources among the cells is randomized, and the interference generated among the cells by the NPRACH is reduced to the maximum extent.
Drawings
FIG. 1 is a flowchart illustrating a resource allocation method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of time domain resource allocation according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of frequency domain resource allocation according to an embodiment of the present invention;
FIG. 4 is a schematic diagram I of time domain resources in the Internet of things;
FIG. 5 is a schematic diagram of time domain resources in the Internet of things;
FIG. 6 is a schematic diagram of time domain resources in the Internet of things;
FIG. 7 is a schematic diagram of frequency domain resources in the Internet of things;
FIG. 8 is a schematic diagram of time domain resource allocation;
FIG. 9 is a schematic diagram of frequency domain resource allocation;
FIG. 10 is a diagram illustrating an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a resource allocation apparatus according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
The first embodiment,
An embodiment of the present invention provides a resource allocation method, which is applied to a server, and as shown in fig. 1, includes:
step 101: acquiring identification information of at least one internet of things cell, and calculating to obtain time domain offset indication information and/or frequency domain offset indication information of each internet of things cell based on the identification information of each internet of things cell;
step 102: determining the time domain offset and/or the frequency domain offset of each cell of the internet of things based on the indication information of the time domain offset and/or the indication information of the frequency domain offset;
step 103: and determining resource configuration information of a random access channel in each cell of the internet of things based on the time domain offset and/or the frequency domain offset of each cell of the internet of things, and sending the resource configuration information to the corresponding cell of the internet of things.
Here, the server may be a network device provided in a network for controlling each device in the network; correspondingly, the network may be an internet of things, and each device in the network may be a management device that covers a certain cell and performs data interaction on user equipment in a covered area. The specific presence entities of the server and the management devices in the respective cells are not limited in this embodiment.
The obtaining of the identification information of at least one internet of things cell may be that the server obtains the identification information of the internet of things cells managed by the server through the management device of each internet of things cell connected to the server; the setting may also be performed according to actual situations, for example, setting the identification information for the cells in different areas.
Calculating to obtain the indication information of the time domain offset and/or the indication information of the frequency domain offset of each internet of things cell based on the identification information of each internet of things cell, wherein multiple actual processing modes can be provided, for example, the method can include setting the time domain of each internet of things cell only and not setting the frequency domain; or only setting the frequency domain resource of each internet of things cell and not setting the time domain resource; and the time domain and frequency domain resources of summer and autumn of the Internet of things can be adjusted together. The method specifically comprises the following steps:
dividing the identification information of the cell of the Internet of things with a preset time domain numerical value to obtain a remainder, and taking the obtained remainder as indication information of the time domain offset;
and/or the presence of a gas in the gas,
and dividing the identification information of the cell of the Internet of things by a preset frequency domain numerical value to obtain a remainder, and taking the obtained remainder as the indication information of the frequency domain offset.
In addition, the setting of the frequency domain value can also be set according to the division number of the frequency domain resource, for example, the frequency domain resource can be divided into 7 parts, and correspondingly, the frequency domain value can be set to 7. It should be understood that the setting manner of the time domain values and the frequency domain values is only an example, and may be adjusted in specific implementation, and the embodiment does not perform an exhaustive list of two values.
And dividing the identification information of the cell of the internet of things by a preset time domain numerical value to obtain a remainder, and dividing the identification information of the cell of the internet of things by a preset frequency domain numerical value to obtain a remainder, wherein the calculation can be a modulo calculation.
In the following, how to determine the time domain offset or the frequency domain offset based on the indication information of the time domain offset and the frequency domain offset is described, specifically, there may be the following two processing manners:
the first treatment method,
Determining the time domain offset and/or the frequency domain offset of each cell of the internet of things based on the indication information of the time domain offset and/or the indication information of the frequency domain offset, including:
selecting the time domain offset from a time domain sub-resource indication table based on the indication information of the time domain offset corresponding to the identification information of the cell of the Internet of things; the time domain sub-resource indication table at least comprises the starting time of each time domain sub-resource, and all the time domain sub-resources form at least part of the time domain resources which can be provided by the cell of the internet of things;
and/or the presence of a gas in the gas,
selecting the frequency domain offset from a frequency domain sub-resource indication table based on the indication information of the frequency domain offset corresponding to the identification information of the cell of the Internet of things; the frequency domain sub-resource indication table at least comprises an initial frequency point of each frequency domain sub-resource, and all the frequency domain sub-resources form at least part of the frequency domain resources which can be provided by the cell of the internet of things.
The time domain sub-resource indication table may be preset, and the setting manner of the time domain sub-resource indication table may be related to the number of divided time domain resources, for example, when the time domain resource corresponding to the internet of things cell is 66 μ s, if the time domain resource is divided into 5, each time domain sub-resource may correspond to 13 μ s, for example, when the indication information of the time domain offset is 0, the time domain offset may start from 0 second, the length of the corresponding frequency domain sub-resource may be 13 μ s, when the indication information of the time domain offset is 1, the time domain offset may start from 14 μ s, and so on. It should be noted that the length of each time domain sub-resource may be the same or different, and specifically, each internet of things cell is set separately.
The frequency domain sub-resource indication table may be preset, and a setting manner of the frequency domain sub-resource indication table may be related to the number of divided frequency domain resources, for example, when the frequency domain resource corresponding to the internet of things cell is 180khz, there may be 48 corresponding sub-carriers, if the frequency domain resource is divided into 7, each time domain sub-resource may correspond to 12 sub-carriers, for example, when the indication information of the frequency domain offset is 0, the time domain offset may start from 0, the length of the corresponding frequency domain sub-resource may be 12 sub-carriers, and when the indication information of the time domain offset is 5, the frequency domain offset may start from the 18 th sub-carrier, and so on. It should be noted that the length of each frequency domain sub-resource may be the same or different, and specifically, each internet of things cell is set separately.
The second treatment method,
The determining the time domain offset and/or the frequency domain offset of each cell of the internet of things based on the indication information of the time domain offset and/or the indication information of the frequency domain offset includes:
calculating the length of the indication information of the time domain offset corresponding to the identification information of the cell of the Internet of things and a preset time domain sub-resource to obtain the time domain offset corresponding to the indication information of the time domain offset;
and/or the presence of a gas in the gas,
and calculating the length of the frequency domain deviation indication information corresponding to the identification information of the cell of the Internet of things and a preset frequency band to obtain the frequency domain deviation corresponding to the frequency domain deviation indication information.
The length of the preset time domain sub-resource is set according to an actual situation, for example, may be set to 14 μ s, and the calculation formula may be (time domain offset indication information) × the length of the time domain sub-resource; for example, when the indication information of the time domain offset is 0, the corresponding start time may be determined to be 0 seconds, and then when the indication information is 1, the corresponding start time may be determined to be 14 μ s; the length of each corresponding time domain resource may be set according to an actual situation, for example, the length of the time domain resource of each internet of things cell may be the same or different, for example, both may be set to 13 μ s.
The length of the frequency band can also be set according to the actual situation, for example, 12 sub-frequency bands can be set.
Further, the time domain offset and the frequency domain offset may be adjusted after the time domain offset and the frequency domain offset are calculated, specifically as follows:
judging whether the difference value between the time domain offsets between two adjacent internet of things cells is smaller than a preset time threshold value or not; if the time threshold value is preset in the cell, selecting at least one of the two adjacent internet of things cells to perform time domain offset adjustment to obtain adjusted time domain offset corresponding to the at least one internet of things cell;
and/or the presence of a gas in the gas,
judging whether the difference value between the frequency domain offsets of two adjacent internet of things cells is smaller than a preset frequency threshold value or not; and if the frequency threshold value is preset in the cell, selecting at least one of the two adjacent Internet of things cells to perform frequency domain offset adjustment, so as to obtain the adjusted frequency domain offset corresponding to the at least one Internet of things cell.
The preset time duration threshold may be set according to an actual situation, for example, may be-1 μ s, that is, when it is assumed that a time domain resource between two cells overlaps less than-1 μ s, time domain offsets of the two cells may be adjusted; it may also be set to 1 mus, which is not exhaustive here.
The preset frequency threshold may also be set according to an actual situation, for example, when there is frequency domain overlapping of more than 1 subcarrier in an adjacent cell, the preset frequency threshold may be adjusted.
Wherein the content of the first and second substances,
selecting at least one of the two adjacent internet of things cells to perform time domain offset adjustment, including:
and selecting at least one of the two adjacent Internet of things cells, and adjusting the indication information of the time domain offset of the selected at least one Internet of things cell.
The adjustment may be performed by multiplying a preset time domain adjustment parameter by the time domain offset indication information, where the time domain adjustment parameter is greater than 1, that is, increasing the time domain offset indication information, and then the time domain offset corresponding to the increased time domain offset indication information is the adjusted time domain offset.
It should be understood here that, assuming that the setting is performed according to the time domain sub-resource indication table, more indication information and its corresponding time domain offset need to be present in the indication table. It is assumed that the indication information of the time domain resource can be set to 10 in advance, and each indication information corresponds to a different time domain offset.
Selecting at least one of the two adjacent internet of things cells to perform frequency domain offset adjustment, and the method comprises the following steps:
and selecting at least one of the two adjacent Internet of things cells, and adjusting the indication information of the selected at least one Internet of things cell and the frequency domain offset.
The adjustment may be to multiply the preset frequency adjustment parameter by the indication information of the frequency domain offset, where the frequency adjustment parameter is greater than 1.
It should be understood here that, assuming that the setting is performed according to the frequency sub-resource indication table, more indication information and corresponding frequency offset thereof need to be present in the indication table. It is assumed that the indication information of the frequency resource can be set to 20 in advance, and each indication information corresponds to a different frequency offset.
Finally, it should be noted that the time domain sub-resource indication table may further include a time domain length corresponding to each time domain offset; the frequency domain sub-resource indication table may further include a band length of each frequency domain offset.
Therefore, by adopting the scheme, when the resource allocation is carried out on the random access channel of the cell of the internet of things, the identification information of each cell of the internet of things is combined, and the corresponding time domain resource and/or frequency domain resource is obtained by calculation based on the identification information of each cell of the internet of things. Therefore, different internet of things cells correspond to different identification information, and the same calculation method is adopted to inevitably correspond to different indication information of time domain resources and/or frequency domain resources, so that different time domain resources and/or frequency domain resources are determined for adjacent internet of things cells, and therefore, the configuration of NPRACH resources among the cells is randomized, and the interference generated among the cells by the NPRACH is reduced to the maximum extent.
Example II,
On the basis of the first embodiment, the present embodiment provides specific processing scenarios:
regarding the temporal location configuration: there are three parameters for determining the time domain location of PRACH resources: a period; a starting offset; NPRACH repetition number. The NPRACH period and the number of repetitions are determined by the target coverage and the target capacity of the cell, and thus identification Information (ID) of the cell of the internet of things does not need to be associated.
Configuring the ID of the cell of the related Internet of things by using the initial offset: the offset value within the period range is associated with the ID of the internet of things cell, for example, index # 1 of the offset value is num (NPRACH resource period starting time < NPRACH resource period) of the internet of things cell.
Further, since NPRACH has repetition in the time domain, there is a possibility that the offsets may overlap when the offsets are closer, so that the offsets may be selected more sparsely, for example, one offset may be selected every N, and when N is 2, the offset satisfies index 2N index # 1 or (2N +1) index # 1 to increase the interval of the offset value.
Regarding the frequency domain location configuration: the frequency domain position is determined by two parameters: frequency shifting; the number of subcarriers. The number of subcarriers is determined by the target capacity, so that the ID of the cell of the Internet of things does not need to be associated.
Frequency offset configuration association PCID: the frequency offset value is directly related to the PCID, and for example, Index of the offset value is PCID mod (num (number of valid offset values)), and the offset value is selected from the valid offset values.
Suppose there are three cells, cell 0 has a physical id of 327, cell 1 has a physical id of 328, and cell 2 has a physical id of 329. The time domain configuration assumes that NPRACH time domain periods are all 160 ms. The frequency domain configuration NPRACH frequency domain number of subcarriers is 12. Then the method according to the scheme is as follows:
for example, referring to fig. 2, the time domain configuration: the time domain offset selection interval is 2, (that is, the time domain offset value corresponding to the value obtained by multiplying the indication information of the time domain offset selected by two adjacent cells is the final time domain offset).
Cell 0: time domain biasing: 327 mod 5 — 2; the offset value is chosen to be 128ms
Cell 1: time domain biasing: 328 mod 5 ═ 3; the offset value is chosen to be 16ms
And 2, cell: time domain biasing: 329 mod 5 ═ 4; the offset value is chosen to be 64ms
For example, referring to fig. 3, the frequency domain configuration:
cell 0: frequency domain biasing: 327 mod 7 — 5; the offset value is chosen to be 18
Cell 1: frequency domain biasing: 328 mod 7 ═ 6; the offset value is selected to be 34
And 2, cell: frequency domain biasing: 329 mod 7 ═ 0; the selected offset value is 0
In the following, the scheme is described by taking the example of the use in the narrowband internet of things, and the random access channel is NPRACH. NPRACH is sent in a single tone mode, and the interval of subcarriers is 3.75 kHz; the NPRACH supports time-frequency domain division multiplexing and does not support Preamble code division multiplexing; for different cell sizes, 2 CP lengths are supported, for example, referring to fig. 4 and fig. 5, two lengths of 66.7us and 266.7us are supported as examples; 4 Symbol groups form an NPRACH channel; each cell can be configured with 3 sets of PRACH resources at most, which respectively correspond to three coverage levels. Referring to fig. 6 and 7, the NPRACH channel occupies 1 3.75kHz subcarrier bandwidth in the frequency domain, and its available frequency domain resources, as well as frequency domain resource offset, can be configured by broadcasting information.
Further, the resource configuration in NPRACH frequency domain can be performed by two parameters: prach-SubcarrirOffset and prach-NumSubcarriers, respectively, indicate frequency domain offset and frequency domain resources.
Time domain definition and configuration, the NPRACH channel performs resource configuration in the time domain through four parameters: NPRACH resource period (NPRACH resource periodicity); NPRACH resource time domain starting time (NPRACH resource period starting time); NPRACH CP length (PRACH CP length); NPRACH repetition Number (Number of NPRACH repetition), configuration tables are shown in fig. 8 and 9.
The design of the existing NPRACH is very important in that the NPRACH does not support the code division mode to distinguish users any more, and the NPRACH is completely distinguished in a time-frequency domain mode, and an NPRACH sequence does not overlap a cell scrambling code. This will cause a serious problem, that is, when users in different cells use the same NPRACH, time-frequency domain resources, and when users are at the cell edge, serious inter-cell PRACH interference will be caused.
Example III,
An embodiment of the present invention provides a resource allocation apparatus, as shown in fig. 11, including:
the indicating information calculating unit 111 is configured to obtain identification information of at least one internet of things cell, and calculate, based on the identification information of each internet of things cell, indicating information of time domain offset and/or indicating information of frequency domain offset for each internet of things cell;
a resource calculating unit 112, configured to determine a time domain offset and/or a frequency domain offset of each internet of things cell based on the indication information of the time domain offset and/or the indication information of the frequency domain offset;
a configuration unit 113, configured to determine resource configuration information of a random access channel in each of the internet of things cells based on the time domain offset and/or the frequency domain offset of each of the internet of things cells, and send the resource configuration information to the corresponding internet of things cell.
Here, the resource allocation means may be provided in a server. The server may be a network device arranged in a network and used for controlling each device in the network; correspondingly, the network may be an internet of things, and each device in the network may be a management device that covers a certain cell and performs data interaction on user equipment in a covered area. The specific presence entities of the server and the management devices in the respective cells are not limited in this embodiment.
The obtaining of the identification information of at least one internet of things cell may be that the server obtains the identification information of the internet of things cells managed by the server through the management device of each internet of things cell connected to the server; the setting may also be performed according to actual situations, for example, setting the identification information for the cells in different areas.
Calculating to obtain the indication information of the time domain offset and/or the indication information of the frequency domain offset of each internet of things cell based on the identification information of each internet of things cell, wherein multiple actual processing modes can be provided, for example, the method can include setting the time domain of each internet of things cell only and not setting the frequency domain; or only setting the frequency domain resource of each internet of things cell and not setting the time domain resource; and the time domain and frequency domain resources of summer and autumn of the Internet of things can be adjusted together. The method specifically comprises the following steps:
the indication information calculation unit is used for dividing the identification information of the cell of the internet of things by a preset time domain numerical value to obtain a remainder, and taking the obtained remainder as the indication information of the time domain offset;
and/or the presence of a gas in the gas,
the indicating information calculating unit is used for dividing the identification information of the cell of the internet of things by a preset frequency domain numerical value to obtain a remainder, and the obtained remainder is used as indicating information of the frequency domain deviation.
In addition, the setting of the frequency domain value can also be set according to the division number of the frequency domain resource, for example, the frequency domain resource can be divided into 7 parts, and correspondingly, the frequency domain value can be set to 7. It should be understood that the setting manner of the time domain values and the frequency domain values is only an example, and may be adjusted in specific implementation, and the embodiment does not perform an exhaustive list of two values.
And dividing the identification information of the cell of the internet of things by a preset time domain numerical value to obtain a remainder, and dividing the identification information of the cell of the internet of things by a preset frequency domain numerical value to obtain a remainder, wherein the calculation can be a modulo calculation.
In the following, how to determine the time domain offset or the frequency domain offset based on the indication information of the time domain offset and the frequency domain offset is described, specifically, there may be the following two processing manners:
the first treatment method,
The resource calculation unit is used for selecting the time domain offset from the time domain sub-resource indication table based on the indication information of the time domain offset corresponding to the identification information of the cell of the internet of things; the time domain sub-resource indication table at least comprises the starting time of each time domain sub-resource, and all the time domain sub-resources form at least part of the time domain resources which can be provided by the cell of the internet of things;
and/or the presence of a gas in the gas,
the resource calculation unit is used for selecting the frequency domain offset from the frequency domain sub-resource indication table based on the indication information of the frequency domain offset corresponding to the identification information of the cell of the internet of things; the frequency domain sub-resource indication table at least comprises an initial frequency point of each frequency domain sub-resource, and all the frequency domain sub-resources form at least part of the frequency domain resources which can be provided by the cell of the internet of things.
The time domain sub-resource indication table may be preset, and the setting manner of the time domain sub-resource indication table may be related to the number of divided time domain resources, for example, when the time domain resource corresponding to the internet of things cell is 66 μ s, if the time domain resource is divided into 5, each time domain sub-resource may correspond to 13 μ s, for example, when the indication information of the time domain offset is 0, the time domain offset may start from 0 second, the length of the corresponding frequency domain sub-resource may be 13 μ s, when the indication information of the time domain offset is 1, the time domain offset may start from 14 μ s, and so on. It should be noted that the length of each time domain sub-resource may be the same or different, and specifically, each internet of things cell is set separately.
The frequency domain sub-resource indication table may be preset, and a setting manner of the frequency domain sub-resource indication table may be related to the number of divided frequency domain resources, for example, when the frequency domain resource corresponding to the internet of things cell is 180khz, there may be 48 corresponding sub-carriers, if the frequency domain resource is divided into 7, each time domain sub-resource may correspond to 12 sub-carriers, for example, when the indication information of the frequency domain offset is 0, the time domain offset may start from 0, the length of the corresponding frequency domain sub-resource may be 12 sub-carriers, and when the indication information of the time domain offset is 5, the frequency domain offset may start from the 18 th sub-carrier, and so on. It should be noted that the length of each frequency domain sub-resource may be the same or different, and specifically, each internet of things cell is set separately.
The second treatment method,
The resource calculating unit is configured to calculate based on the indication information of the time domain offset corresponding to the identification information of the internet of things cell and the length of a preset time domain sub-resource, to obtain the time domain offset corresponding to the indication information of the time domain offset;
and/or the presence of a gas in the gas,
the resource calculating unit is configured to calculate, based on the length of the preset frequency band and the frequency domain offset indicating information corresponding to the identification information of the internet of things cell, to obtain the frequency domain offset corresponding to the frequency domain offset indicating information.
The length of the preset time domain sub-resource is set according to an actual situation, for example, may be set to 14 μ s, and the calculation formula may be (time domain offset indication information) × the length of the time domain sub-resource; for example, when the indication information of the time domain offset is 0, the corresponding start time may be determined to be 0 seconds, and then when the indication information is 1, the corresponding start time may be determined to be 14 μ s; the length of each corresponding time domain resource may be set according to an actual situation, for example, the length of the time domain resource of each internet of things cell may be the same or different, for example, both may be set to 13 μ s.
The length of the frequency band can also be set according to the actual situation, for example, 12 sub-frequency bands can be set.
Further, the time domain offset and the frequency domain offset may be adjusted after the time domain offset and the frequency domain offset are calculated, specifically as follows:
the resource calculation unit is used for judging whether the difference value between the time domain offsets of two adjacent internet of things cells is smaller than a preset time length threshold value or not; if the time threshold value is preset in the cell, selecting at least one of the two adjacent internet of things cells to perform time domain offset adjustment to obtain adjusted time domain offset corresponding to the at least one internet of things cell;
and/or the presence of a gas in the gas,
the resource calculation unit is used for judging whether the difference value between the frequency domain offsets of two adjacent internet of things cells is smaller than a preset frequency threshold value or not; and if the frequency threshold value is preset in the cell, selecting at least one of the two adjacent Internet of things cells to perform frequency domain offset adjustment, so as to obtain the adjusted frequency domain offset corresponding to the at least one Internet of things cell.
The preset time duration threshold may be set according to an actual situation, for example, may be-1 μ s, that is, when it is assumed that a time domain resource between two cells overlaps less than-1 μ s, time domain offsets of the two cells may be adjusted; it may also be set to 1 mus, which is not exhaustive here.
The preset frequency threshold may also be set according to an actual situation, for example, when there is frequency domain overlapping of more than 1 subcarrier in an adjacent cell, the preset frequency threshold may be adjusted.
Wherein the content of the first and second substances,
the resource calculation unit is used for selecting at least one of the two adjacent internet of things cells and adjusting the indication information of the time domain offset of the selected at least one internet of things cell.
The adjustment may be performed by multiplying a preset time domain adjustment parameter by the time domain offset indication information, where the time domain adjustment parameter is greater than 1, that is, increasing the time domain offset indication information, and then the time domain offset corresponding to the increased time domain offset indication information is the adjusted time domain offset.
It should be understood here that, assuming that the setting is performed according to the time domain sub-resource indication table, more indication information and its corresponding time domain offset need to be present in the indication table. It is assumed that the indication information of the time domain resource can be set to 10 in advance, and each indication information corresponds to a different time domain offset.
The resource calculation unit is used for selecting at least one of the two adjacent internet of things cells and adjusting the indication information of the selected at least one internet of things cell and the frequency domain offset.
The adjustment may be to multiply the preset frequency adjustment parameter by the indication information of the frequency domain offset, where the frequency adjustment parameter is greater than 1.
It should be understood here that, assuming that the setting is performed according to the frequency sub-resource indication table, more indication information and corresponding frequency offset thereof need to be present in the indication table. It is assumed that the indication information of the frequency resource can be set to 20 in advance, and each indication information corresponds to a different frequency offset.
Finally, it should be noted that the time domain sub-resource indication table may further include a time domain length corresponding to each time domain offset; the frequency domain sub-resource indication table may further include a band length of each frequency domain offset.
Therefore, by adopting the scheme, when the resource allocation is carried out on the random access channel of the cell of the internet of things, the identification information of each cell of the internet of things is combined, and the corresponding time domain resource and/or frequency domain resource is obtained by calculation based on the identification information of each cell of the internet of things. Therefore, different internet of things cells correspond to different identification information, and the same calculation method is adopted to inevitably correspond to different indication information of time domain resources and/or frequency domain resources, so that different time domain resources and/or frequency domain resources are determined for adjacent internet of things cells, and therefore, the configuration of NPRACH resources among the cells is randomized, and the interference generated among the cells by the NPRACH is reduced to the maximum extent.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A resource allocation method is applied to a server, and is characterized in that the method comprises the following steps:
acquiring identification information of at least one internet of things cell, and calculating to obtain time domain offset indication information and/or frequency domain offset indication information of each internet of things cell based on the identification information of each internet of things cell;
determining the time domain offset and/or the frequency domain offset of each cell of the internet of things based on the indication information of the time domain offset and/or the indication information of the frequency domain offset;
judging whether the difference value between the time domain offsets between two adjacent internet of things cells is smaller than a preset time threshold value or not; if the time length is smaller than the preset time length threshold value, selecting at least one of the two adjacent Internet of things cells to perform time domain offset adjustment, and obtaining the adjusted time domain offset of the at least one Internet of things cell;
and/or the presence of a gas in the gas,
judging whether the difference value between the frequency domain offsets of two adjacent internet of things cells is smaller than a preset frequency threshold value or not; if the frequency offset is smaller than the preset frequency threshold value, selecting at least one of the two adjacent internet of things cells to perform frequency domain offset adjustment to obtain the adjusted frequency domain offset of the at least one internet of things cell;
and determining resource configuration information of a random access channel in each internet of things cell based on the adjusted time domain offset and/or frequency domain offset of each internet of things cell, and sending the resource configuration information to the corresponding internet of things cell.
2. The method according to claim 1, wherein the calculating, based on the identification information of each internet of things cell, the information indicating the time domain offset and/or the information indicating the frequency domain offset for each internet of things cell includes:
dividing the identification information of the cell of the Internet of things with a preset time domain numerical value to obtain a remainder, and taking the obtained remainder as indication information of the time domain offset;
and/or the presence of a gas in the gas,
and dividing the identification information of the cell of the Internet of things by a preset frequency domain numerical value to obtain a remainder, and taking the obtained remainder as the indication information of the frequency domain offset.
3. The method of claim 1, wherein the determining the time domain offset and/or the frequency domain offset of each IoT cell based on the indication information of the time domain offset and/or the indication information of the frequency domain offset comprises:
selecting the time domain offset from a time domain sub-resource indication table based on the indication information of the time domain offset corresponding to the identification information of the cell of the Internet of things; the time domain sub-resource indication table at least comprises the starting time of each time domain sub-resource, and all the time domain sub-resources form at least part of the time domain resources which can be provided by the cell of the internet of things;
and/or the presence of a gas in the gas,
selecting the frequency domain offset from a frequency domain sub-resource indication table based on the indication information of the frequency domain offset corresponding to the identification information of the cell of the Internet of things; the frequency domain sub-resource indication table at least comprises an initial frequency point of each frequency domain sub-resource, and all the frequency domain sub-resources form at least part of the frequency domain resources which can be provided by the cell of the internet of things.
4. The method of claim 1, wherein the determining the time domain offset and/or the frequency domain offset of each IoT cell based on the information indicative of the time domain offset and/or the information indicative of the frequency domain offset comprises:
calculating the length of the indication information of the time domain offset corresponding to the identification information of the cell of the Internet of things and a preset time domain sub-resource to obtain the time domain offset corresponding to the indication information of the time domain offset;
and/or the presence of a gas in the gas,
and calculating the length of the frequency domain deviation indication information corresponding to the identification information of the cell of the Internet of things and a preset frequency band to obtain the frequency domain deviation corresponding to the frequency domain deviation indication information.
5. The method of claim 1,
selecting at least one of the two adjacent internet of things cells to perform time domain offset adjustment, including:
selecting at least one of the two adjacent Internet of things cells, and adjusting the indication information of the time domain offset of the selected at least one Internet of things cell;
selecting at least one of the two adjacent internet of things cells to perform frequency domain offset adjustment, and the method comprises the following steps:
and selecting at least one of the two adjacent Internet of things cells, and adjusting the indication information of the selected at least one Internet of things cell and the frequency domain offset.
6. An apparatus for resource allocation, the apparatus comprising:
the indicating information calculating unit is used for acquiring the identification information of at least one Internet of things cell, and calculating the indicating information of time domain offset and/or the indicating information of frequency domain offset of each Internet of things cell based on the identification information of each Internet of things cell;
a resource calculating unit, configured to determine a time domain offset and/or a frequency domain offset of each internet of things cell based on the indication information of the time domain offset and/or the indication information of the frequency domain offset;
the configuration unit is used for determining resource configuration information of a random access channel in each internet of things cell based on the time domain offset and/or the frequency domain offset of each internet of things cell and sending the resource configuration information to the corresponding internet of things cell;
the resource calculation unit is also used for judging whether the difference value between the time domain offsets of two adjacent internet of things cells is smaller than a preset duration threshold value or not; if the time threshold value is preset in the cell, selecting at least one of the two adjacent internet of things cells to perform time domain offset adjustment to obtain the adjusted time domain offset of the at least one internet of things cell;
and/or the presence of a gas in the gas,
judging whether the difference value between the frequency domain offsets of two adjacent internet of things cells is smaller than a preset frequency threshold value or not; and if the frequency threshold value is preset in the cell, selecting at least one of the two adjacent Internet of things cells to perform frequency domain offset adjustment, so as to obtain the adjusted frequency domain offset of the at least one Internet of things cell.
7. The apparatus according to claim 6, wherein the indication information calculating unit is configured to divide identification information of the internet of things cell by a preset time domain value to obtain a remainder, and use the obtained remainder as the indication information of the time domain offset;
and/or the presence of a gas in the gas,
and the indicating information calculating unit is used for dividing the identification information of the cell of the Internet of things by a preset frequency domain numerical value to obtain a remainder, and taking the obtained remainder as the indicating information of the frequency domain deviation.
8. The apparatus according to claim 6, wherein the resource calculating unit is configured to select the time domain offset from a time domain sub-resource indication table based on indication information of the time domain offset corresponding to the identification information of the internet of things cell; the time domain sub-resource indication table at least comprises the starting time of each time domain sub-resource, and all the time domain sub-resources form at least part of the time domain resources which can be provided by the cell of the internet of things;
and/or the presence of a gas in the gas,
selecting the frequency domain offset from a frequency domain sub-resource indication table based on the indication information of the frequency domain offset corresponding to the identification information of the cell of the Internet of things; the frequency domain sub-resource indication table at least comprises an initial frequency point of each frequency domain sub-resource, and all the frequency domain sub-resources form at least part of the frequency domain resources which can be provided by the cell of the internet of things.
9. The apparatus according to claim 6, wherein the resource calculating unit is configured to calculate, based on the length of the preset time domain sub-resource and the indication information of the time domain offset corresponding to the identification information of the internet of things cell, to obtain the time domain offset corresponding to the indication information of the time domain offset;
and/or the presence of a gas in the gas,
and calculating the length of the frequency domain deviation indication information corresponding to the identification information of the cell of the Internet of things and a preset frequency band to obtain the frequency domain deviation corresponding to the frequency domain deviation indication information.
10. The apparatus according to claim 9, wherein the resource calculating unit is configured to select at least one of the two adjacent internet of things cells, and adjust the indication information of the time domain offset of the selected at least one internet of things cell;
and/or the presence of a gas in the gas,
and selecting at least one of the two adjacent Internet of things cells, and adjusting the indication information of the selected at least one Internet of things cell and the frequency domain offset.
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| CN110913368A (en) * | 2018-09-18 | 2020-03-24 | 大唐移动通信设备有限公司 | Resource scheduling method and device in rail transit communication system |
| CN109041255B (en) * | 2018-09-21 | 2021-02-23 | 中国联合网络通信集团有限公司 | Access method and UE |
| CN111757363B (en) * | 2019-03-29 | 2022-07-12 | 中国移动通信有限公司研究院 | Communication method, terminal and network equipment |
| CN110495192B (en) * | 2019-06-26 | 2024-02-27 | 北京小米移动软件有限公司 | Random access method, device and storage medium |
| CN113366870B (en) * | 2020-02-14 | 2022-07-22 | 华为技术有限公司 | Resource allocation method and device |
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