CN111615201B - CORESET resource allocation and indication method and device - Google Patents

CORESET resource allocation and indication method and device Download PDF

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Publication number
CN111615201B
CN111615201B CN202010294663.4A CN202010294663A CN111615201B CN 111615201 B CN111615201 B CN 111615201B CN 202010294663 A CN202010294663 A CN 202010294663A CN 111615201 B CN111615201 B CN 111615201B
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bandwidth
coreset
terminal
bit
physical resource
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CN111615201A (en
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高峰
任剑
杨征帆
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Beijing Yunzhi Soft Communication Information Technology Co ltd
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Beijing Yunzhi Soft Communication Information Technology Co ltd
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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
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a CORESET resource allocation and indication method and equipment, which relate to the technical field of wireless communication and comprise the following steps: if the terminal comprises a bandwidth area, acquiring a physical resource block index of the bandwidth area; obtaining configuration information; the terminal is controlled to analyze the configuration information to obtain the frequency domain position indicated by the CORESET; if the terminal comprises N bandwidth areas, wherein N is an integer greater than or equal to 2, physical resource block indexes of the bandwidth areas are sequentially obtained; obtaining configuration information, wherein the configuration information is bit data; wherein 2 is M Not less than N, M is an integer; and controlling the terminal to analyze the configuration information to obtain the frequency domain position indicated by the CORESET. The BWP-level PRB index is added on the basis of the full-bandwidth PRB index, and the frequency domain position of CORESET is indicated through the BWP-level index, so that the cost of RRC signaling is reduced.

Description

CORESET resource allocation and indication method and device
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a CORESET resource allocation and indication method and apparatus.
Background
In the fifth Generation mobile communication technology (5 th-Generation, 5G), as the bandwidth increases, the downlink control area resources correspondingly increase. If the PDCCH transmitting and receiving mechanism in LTE is continuously adopted, the blind detection complexity of the terminal can be greatly increased. Therefore, the concept of a control resource set (Control Resource Set, CORESET) is introduced in 5G, the control resource with full bandwidth is divided into a plurality of CORESETs, and each terminal performs blind detection of each aggregation level in the CORESET corresponding to the terminal, so that the complexity of transmitting and receiving is reduced.
On the other hand, since the processing capabilities of different terminals have differences, a concept of Bandwidth area (BWP) is further proposed in 5G, allowing the system to divide the full Bandwidth resource into several BWP, different levels of terminals may be allocated with different numbers and sizes of BWP, and the terminals receive and transmit data only on the BWP configured as active, thereby allowing terminals of different processing capabilities to operate in the 5G system. However, in the prior art, the research on resource allocation in CORESET is based on the general full bandwidth situation, and there is no method for resource allocation and indication of CORESET for a terminal operating under one or more different BWP.
Disclosure of Invention
In view of this, the present application provides a CORESET resource allocation and indication method and apparatus, which increases a BWP-level PRB index on the basis of a full-bandwidth PRB index, and indicates a frequency domain position of CORESET through the BWP-level index, thereby being beneficial to reducing the overhead of RRC signaling.
In order to solve the technical problems, the application has the following technical scheme:
in one aspect, the present application provides a CORESET resource allocation and indication method, including:
judging whether the number of bandwidth areas contained in the terminal is equal to 1:
If the terminal comprises a bandwidth area, numbering physical resource blocks contained in the bandwidth area to obtain a physical resource block index of the bandwidth area; determining resources occupied by CORESET in the bandwidth region and obtaining a CORESET resource allocation result; adding at least 1 bit of physical resource block identification bit into the CORESET resource allocation result to obtain configuration information; transmitting the configuration information to the terminal through a radio resource control signaling; the terminal is controlled to analyze the configuration information to obtain the frequency domain position indicated by the CORESET;
if the terminal comprises N bandwidth areas, wherein N is an integer greater than or equal to 2, numbering physical resource blocks contained in the N bandwidth areas in sequence to obtain physical resource block indexes of the bandwidth areas; determining resources occupied by COESET in each bandwidth region and obtaining a COESET resource allocation result in each bandwidth region; adding at least 1 bit of physical resource block identification bit and M bits of bandwidth area identification bit into the CORESET resource allocation result to obtain configuration information, wherein the configuration information is bit data; wherein 2 is M Not less than N, M is an integer; transmitting the configuration information to the terminal through a radio resource control signaling; and controlling the terminal to analyze the configuration information to obtain the frequency domain position indicated by the CORESET.
Optionally, wherein:
the step of numbering the physical resource blocks contained in the bandwidth area to obtain the physical resource block index of the bandwidth area comprises the following specific steps:
and acquiring the bandwidth occupied by the bandwidth region and the subcarrier spacing, calculating the number n of physical resource blocks contained in the bandwidth region under one time domain symbol according to the bandwidth occupied by the bandwidth region and the subcarrier spacing, and sequentially taking the physical resource blocks as the numbers according to 1-n to obtain the physical resource block indexes of the bandwidth region as 1-n.
Optionally, wherein:
the resources occupied by CORESET in the bandwidth area are determined, and a CORESET resource allocation result is obtained, specifically:
setting the granularity of the resource indication of the terminal as y, wherein the terminal comprises n/y bits; wherein the granularity representation 1 bit indicates y physical resource blocks;
the occupied bit is valued at 1, and the unoccupied bit is valued at 0; and obtaining a CORESET resource allocation result according to the value of each bit.
Optionally, wherein:
when the terminal contains N bandwidth areas, the granularity of the resource indication of the N bandwidth areas in the same terminal is the same.
Optionally, wherein:
For a terminal that contains a bandwidth region,
the terminal is controlled to analyze the configuration information to obtain the frequency domain position of the CORESET, specifically:
transmitting a command to the terminal, so that the terminal determines fields corresponding to bits in the configuration information according to a protocol, wherein the fields at least comprise a physical resource block identification area and a frequency domain position indication area;
and obtaining the frequency domain position indicated by the CORESET resource in the bandwidth region according to the bit data of the frequency domain position indication region.
Optionally, wherein:
for a terminal that contains N bandwidth regions,
the terminal is controlled to analyze the configuration information to obtain the frequency domain position of the CORESET, specifically:
transmitting a command to the terminal, so that the terminal determines fields corresponding to bits in the configuration information according to a protocol, wherein the fields at least comprise a physical resource block identification area, a bandwidth area identification area and a frequency domain position indication area;
and determining a current bandwidth region corresponding to the current configuration information according to the bandwidth region identification region, and obtaining the frequency domain position indicated by the CORESET resource in the current bandwidth region according to the bit data of the indication region.
In another aspect, the present application provides a CORESET resource allocation and indication device, including:
The judging module is used for judging whether the number of the bandwidth areas contained in the terminal is equal to 1;
a physical resource block index obtaining module, configured to number physical resource blocks included in the bandwidth area, and obtain a physical resource block index of the bandwidth area;
the allocation result acquisition module is used for determining resources occupied by CORESET in the bandwidth area and acquiring a CORESET resource allocation result;
the configuration information acquisition module is used for adding at least 1 bit of physical resource block identification bit into the CORESET resource allocation result when the terminal comprises a bandwidth area, so as to acquire configuration information; when the terminal comprises N bandwidth areas, adding at least 1 bit of physical resource block identification bits and M bit of bandwidth area identification bits into the CORESET resource allocation result to obtain configuration information; wherein 2 is M Not less than N, M is an integer;
a sending module, configured to send the configuration information to the terminal through a radio resource control signaling;
the frequency domain position acquisition module is used for controlling the terminal to analyze the configuration information and acquire the frequency domain position indicated by the CORESET resource.
Optionally, wherein:
the physical resource block index obtaining module is further configured to obtain a bandwidth and a subcarrier spacing occupied by the bandwidth area, calculate, according to the bandwidth and the subcarrier spacing occupied by the bandwidth area, the number n of physical resource blocks included in the bandwidth area under one time domain symbol, and sequentially obtain, according to 1-n, the physical resource block numbers of the bandwidth area, so as to obtain a physical resource block index of 1-n.
Optionally, wherein:
further comprises:
the granularity setting module is used for setting the granularity of the resource indication of the terminal as y, and the terminal comprises n/y bits; wherein the granularity representation 1 bit indicates y physical resource blocks;
the allocation result obtaining module is used for taking the occupied bit as a value 1 and taking the unoccupied bit as a value 0; and obtaining a CORESET resource allocation result according to the value of each bit.
Optionally, wherein:
and the granularity setting module is also used for setting the granularity of the resource indication of the N bandwidth areas in the same terminal to be the same when the terminal comprises the N bandwidth areas.
Compared with the prior art, the CORESET resource allocation and indication method and device achieve the following effects:
according to the CORESET resource allocation and indication method and device, based on the full-bandwidth PRB index, the BWP level PRB index is added, so that a terminal containing only one BWP can be supported, a terminal containing a plurality of BWPs can be supported, the BWP level PRB index and the full-bandwidth PRB index are distinguished by adding the PRB identification bit in the bitmap, confusion with the full-bandwidth PRB index is avoided, and the fact that the subsequent CORESET frequency domain position indication is correct is ensured. When the terminal contains a plurality of BWPs, each BWP is accurately distinguished by adding a BWP identification bit, so that indication of the frequency domain position occupied by CORESET under each BWP in the terminal is realized. The method and the device support CORESET resource allocation and indication under one or more BWPs, have wide application range, and are beneficial to reducing the cost of RRC signaling by indicating the frequency domain position of the CORESET through the BWP level index.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a flowchart illustrating a CORESET resource allocation and indication method according to an embodiment of the present application;
FIG. 2 is a schematic diagram of CORESET resource allocation and indication including a BWP;
FIG. 3 is a schematic diagram of CORESET resource allocation and indication comprising a plurality of BWPs;
FIG. 4 is a flow chart showing the acquisition of CORESET resource allocation results;
fig. 5 is a schematic diagram illustrating a CORESET occupying frequency domain resources when the terminal includes a BWP;
FIG. 6 is a diagram of the CORESET frequency domain resource bitmap corresponding to the embodiment of FIG. 5;
fig. 7 is a schematic diagram illustrating that CORESET occupies frequency domain resources in each BWP when the terminal includes two BWP;
FIG. 8 is a diagram of the CORESET frequency domain resource bitmap corresponding to the embodiment of FIG. 7;
FIG. 9 is a schematic structural diagram of CORESET resource allocation and indication device according to an embodiment of the present application;
fig. 10 is a schematic diagram of another structure of CORESET resource allocation and indication device according to an embodiment of the present application.
Detailed Description
Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect. Furthermore, the term "coupled" as used herein includes any direct or indirect electrical coupling. Accordingly, if a first device couples to a second device, that connection may be through a direct electrical coupling to the second device, or through another device or coupling means coupled to ground. The description hereinafter sets forth the preferred embodiment for carrying out the present application, but is not intended to limit the scope of the present application in general, for the purpose of illustrating the general principles of the present application. The scope of the present application is defined by the appended claims.
Since the processing capabilities of different terminals have differences, the concept of Bandwidth zones (BWP) is further proposed in 5G, allowing the system to divide the full Bandwidth resources into several BWP, different levels of terminals can be allocated different numbers and sizes of BWP, the terminals only receive and transmit data on the BWP configured as active, thus allowing terminals of different processing capabilities to operate in the 5G system. However, in the prior art, the research on resource allocation in CORESET is based on the general full bandwidth situation, and there is no method for resource allocation and indication of CORESET for a terminal operating under one or more different BWP.
In view of this, the present application provides a CORESET resource allocation and indication method and apparatus, which increases a BWP-level PRB index on the basis of a full-bandwidth PRB index, and indicates a frequency domain position of CORESET through the BWP-level index, thereby being beneficial to reducing the overhead of RRC signaling.
The following detailed description refers to the accompanying drawings and specific embodiments.
Fig. 1 is a flowchart illustrating a CORESET resource allocation and indication method provided in an embodiment of the present application, fig. 2 is a schematic diagram illustrating CORESET resource allocation and indication including one BWP, fig. 3 is a schematic diagram illustrating CORESET resource allocation and indication including a plurality of BWP, please refer to fig. 1-3, a CORESET resource allocation and indication method includes:
Step 10: judging whether the number of bandwidth areas contained in the terminal is equal to 1:
if the terminal includes a bandwidth area, step 21: numbering the physical resource blocks contained in the bandwidth area to obtain a physical resource block index of the bandwidth area; step 22: determining resources occupied by CORESET in a bandwidth region and obtaining a CORESET resource allocation result; step 23: adding at least 1 bit of physical resource block identification bit into the CORESET resource allocation result to obtain configuration information, wherein the configuration information is bit data; step 24: transmitting the configuration information to the terminal through a radio resource control signaling; step 25: the control terminal analyzes the configuration information to obtain a frequency domain position indicated by CORESET;
if the terminal includes N bandwidth areas, where N is an integer greater than or equal to 2, step 31: numbering physical resource blocks contained in the N bandwidth areas in sequence to obtain physical resource block indexes of the bandwidth areas; step 32: determining resources occupied by COESET in each bandwidth region and obtaining a COESET resource allocation result in each bandwidth region; step 33: adding at least 1 bit of physical resource block identification bit and M bits of bandwidth area identification bit into a CORESET resource allocation result to obtain configuration information, wherein the configuration information is bit data; wherein 2 is M Not less than N, M is an integer; step 34: transmitting the configuration information to the terminal through a radio resource control signaling; step 35: the control terminal analyzes the configuration information to obtain the frequency domain position indicated by CORESET.
Specifically, referring to fig. 1 and fig. 2, in the CORESET resource allocation and indication method provided in the embodiments of the present application, it is determined in step 10 that a terminal includes several BWP, if the terminal includes only one BWP, that is, the terminal operates under one BWP and the BWP occupies only a part of the bandwidth in the system bandwidth, the physical resource blocks (Physical Resource Block, PRB) in the BWP are numbered in step 21, so as to obtain the PRB index based on the BWP. After the PRB index is obtained, the resources occupied by the CORESET of the terminal are obtained through step 22, so as to obtain a schematic diagram of the frequency domain resources occupied by the CORESET of the terminal, for example, occupied bits are represented by 1, unoccupied bits are represented by 0, and according to the values of the bits in the schematic diagram, the frequency domain resource allocation result of the CORESET can be obtained, and the frequency domain resource allocation result of the CORESET is finally obtained as bit data because the frequency domain resources are represented by the bits.
Since the terminal operates based on the BWP level, the PRB index is based on the BWP level, and in general, the full bandwidth of the system also includes the PRB index, for example, the system bandwidth is 100MHz, the subcarrier interval is 30KHz, the full bandwidth includes 275 PRBs, the full bandwidth PRB index is 0-274, in order to distinguish the PRB index of the BWP level from the PRB index of the full bandwidth level, a PRB identification bit is added to the frequency domain resource allocation result of CORESET in step 23, so as to obtain a bitmap (bitmap) of the CORESET, and use the bitmap as configuration information of CORESET frequency domain resources of the terminal. By adding the PRB identification bit into the frequency domain resource allocation result of CORESET, the current index can be explicitly represented as the BWP-level PRB index, and confusion with the full-bandwidth-level PRB index is avoided. After obtaining the configuration information of the CORESET frequency domain resource of the terminal, in step 24, the radio resource control (Radio Resource Control, RRC) is used to allocate the radio resource and send related signaling, and the configuration information is sent to the terminal. After the terminal receives the configuration information, in step 25, the terminal analyzes the received configuration information about the CORESET frequency domain resource, and obtains the frequency domain location indicated by CORESET of the terminal.
Referring to fig. 1 and 3, when the terminal includes N BWP, where N is an integer greater than or equal to 2, the terminal operates under N BWP, and the method is the same as that of obtaining the resource allocation result when the terminal includes one BWP, the physical resource blocks (Physical Resource Block, PRB) in the BWP are numbered by step 31, and the PRB index of the PRB based on the BWP is obtained, and since the terminal includes multiple BWP, the PRB index in each BWP needs to be obtained in turn. Then, a schematic diagram of the CORESET occupied by the frequency domain resource of each BWP in the terminal is obtained through step 32, so as to obtain the frequency domain resource allocation result of the CORESET in each BWP, and the frequency domain resource allocation results of the CORESET in each BWP are all bit data.
Unlike the case that the terminal includes one BWP, since the terminal includes a plurality of BWP, an identifier capable of distinguishing each BWP in the terminal needs to be added in addition to the terminal capable of identifying that it is operated based on the BWP level, so that in step 33, not only the PRB identifier bit but also the M-bit BWP identifier bit is added, the bitmap of the CORESET is obtained, and the bitmap is used as configuration information of CORESET frequency domain resources of the terminal. In order to avoid confusion between the PRB identification bits and the BWP identification bits, the PRB identification bits are usually set to 1 bit, and the BWP identification bits are set to M bits, where 2M is equal to or greater than N, and M is an integer, and since N is an integer equal to or greater than 2, the value of M is equal to or greater than 2, that is, the BWP identification bits are at least 2 bits.
After obtaining the configuration information of the CORESET frequency domain resource of the terminal, the configuration information is sent to the terminal in step 34, as in the case where the terminal comprises a BWP. Then in step 35, the terminal analyzes the received configuration information about the CORESET frequency domain resource to obtain the frequency domain location indicated by CORESET of the terminal.
It should be noted that, after the system is configured, the base station determines which resources are allocated to which terminals, so the resources occupied by CORESET in step 22 and step 32 are allocated by the base station. Fig. 2 and 3 are only for illustrating the PRB identification bits and the BWP identification bits, and are not limited to the positions of the PRB identification bits and the BWP identification bits, and may be located at the forefront end of the configuration result or at the extreme end, and only by adding the PRB identification bits to a certain position of the configuration result, the current index may be represented as a BWP-level PRB index, so as to avoid confusion with the full-bandwidth-level PRB index. A BWP identification bit is added at another place in order to distinguish the individual BWP in the same terminal. The time sequence of adding the PRB identification bits and the BWP identification bits in step 33 is not limited, and for example, the PRB identification bits may be added first and then the BWP identification bits may be added, or the BWP identification bits may be added first and then the PRB identification bits may be added.
According to the CORESET resource allocation and indication method provided by the application, on the basis of the full-bandwidth PRB index, the BWP-level PRB index is added, so that a terminal containing only one BWP can be supported, a terminal containing a plurality of BWPs can be supported, the BWP-level PRB index and the full-bandwidth PRB index are distinguished by adding the PRB identification bit in the bitmap, confusion with the full-bandwidth PRB index is avoided, and the fact that the subsequent CORESET frequency domain position indication is correct is ensured. When the terminal contains a plurality of BWPs, each BWP is accurately distinguished by adding a BWP identification bit, so that indication of the frequency domain position occupied by CORESET under each BWP in the terminal is realized. The method and the device support CORESET resource allocation and indication under one or more BWPs, have wide application range, and are beneficial to reducing the cost of RRC signaling by indicating the frequency domain position of the CORESET through the BWP level index.
Optionally, referring to fig. 2 and fig. 3, in the step 21, the physical resource blocks included in the bandwidth area are numbered to obtain a physical resource block index of the bandwidth area, which specifically includes: and acquiring the bandwidth occupied by the bandwidth area and the subcarrier spacing, calculating the number n of physical resource blocks contained in the bandwidth area under one time domain symbol according to the bandwidth occupied by the bandwidth area and the subcarrier spacing, and sequentially numbering the physical resource blocks according to 1-n to acquire the physical resource block index of the bandwidth area as 1-n.
Specifically, referring to fig. 2, since BWP occupies only a part of the full bandwidth of the system and its subcarrier spacing may be different from that of the system, when obtaining the PRB index of the BWP in step 21, it is first required to query the bandwidth occupied by the BWP and the subcarrier spacing, and calculate the number of PRBs contained in the BWP according to the bandwidth and the subcarrier spacing, for example, the BWP bandwidth is 20MHz, the subcarrier spacing is 60KHz, the number of subcarriers in the BWP is n1=20 MHz/60KHz, and one PRB contains 12 subcarriers, therefore, the number of PRBs is n=n1/12=27, and each PRB number is sequentially 1-27, so that the PRB index in the BWP can be obtained as 1-27. Of course, when numbering PRBs, the numbering may be performed in other ways, for example starting from 0 to ending with n-1, i.e. the PRB index is 0- (n-1).
It should be noted that, the method for acquiring the PRB index based on BWP in step 21 is also applicable to acquiring the PRB index based on BWP when the terminal includes a plurality of BWP, and therefore, the method for acquiring the PRB index based on BWP in step 31 will not be described herein.
Optionally, fig. 4 is a flowchart illustrating a method for obtaining a CORESET resource allocation result, fig. 5 is a schematic diagram illustrating CORESET occupying frequency domain resources when the terminal includes a BWP, fig. 6 is a CORESET frequency domain resource bitmap corresponding to the embodiment of fig. 5, please refer to fig. 4-5, in the step 22, the resources occupied by CORESET in the bandwidth area are determined and CORESET resource allocation result is obtained, specifically: step 221: setting the granularity of the resource indication of the terminal as y, wherein the terminal comprises n/y bits; wherein granularity representation 1 bit indicates y physical resource blocks; step 222: the occupied bit is valued at 1, and the unoccupied bit is valued at 0; step 223: and obtaining a CORESET resource allocation result according to the value of each bit.
Specifically, referring to fig. 4 and 5, when the core resource allocation result is obtained in the above step 22, the granularity of the resource indication of the terminal is set in step 221, for example, when the granularity of the resource indication is set to be 6, it indicates that 1 bit indicates 6 PRBs, so that when the terminal includes 54 PRBs, the terminal includes 9 bits in total. In step 222, the occupied bit is assigned to 1, and the unoccupied bit is assigned to 0, and in step 223, the core resource allocation result of the terminal is obtained according to the value of each bit, where the resource allocation result corresponding to the core occupied frequency domain resource schematic shown in fig. 5 is (101001010). The PRB identification bit is added to the configuration result, so that the corresponding CORESET frequency domain resource configuration information in the embodiment shown in fig. 5 can be obtained, as shown in fig. 6. Of course, the setting of the granularity of the resource indication to 6 is only one schematic illustration, and the granularity of the resource indication can be flexibly adjusted for different service types, so that the performance requirements of different services can be met.
Fig. 7 is a schematic diagram showing that CORESET occupies frequency domain resources in each BWP when the terminal includes two BWP, fig. 8 is a CORESET frequency domain resource bitmap corresponding to the embodiment of fig. 7, please refer to fig. 7, when the terminal includes a plurality of BWP, the step of obtaining CORESET resource allocation results in each BWP in step 32 is the same as step 22, for example, the terminal 1 includes BWP0 and BWP1, wherein BWP0 occupies 10MHz, the subcarrier interval is 30KHz, and the terminal includes 27 PRBs, and the PRB index is set to 0-26; BWP1 occupies 20MHz with a subcarrier spacing of 60KHz, and also contains 27 PRBs with a PRB index of 0-26. Then, according to the method for obtaining the resource allocation result in step 22, the resource allocation results of BWP0 and BWP1 are obtained respectively, for example, in the schematic diagram shown in fig. 7, BWP0 occupies bits 0, 3, 6, 8, BWP1 occupies bits 1, 2, 5, 6, and the CORESET resource allocation result is obtained in turn (100100101, 011001100). The corresponding CORESET frequency domain resource configuration information of the embodiment shown in fig. 7 can be obtained by adding the PRB identification bit and the BWP identification bit to the configuration result, as shown in fig. 8.
It should be noted that fig. 5 and fig. 6 are only schematic illustrations of the frequency domain resources occupied by CORESET, and are not limiting on the number of PRBs and granularity, in different embodiments, the number of PRBs needs to be specifically calculated according to the bandwidth of BWP and the subcarrier spacing, and the granularity of the resource indication may be specifically set according to the actual situation, where the bandwidth of BWP is larger, and when the bandwidth of BWP is larger, for example, the bandwidth of BWP contains 273 PRBs, and the granularity of PRBs is set to 16, and then the resource occupied by CORESET needs to be indicated by CORESET by 17 bits. And when the BWP bandwidth is smaller, the number of PRBs contained in the BWP is relatively small, for example, when 80 PRBs are contained in the BWP, granularity may be set to 8, and then the resources occupied by CORESET is indicated by 10 bits. When the BWP bandwidth is smaller, the granularity of the resource indication can be reduced, so that the CORESET frequency domain resource can be set finer, and the influence caused by different parameter sets of the BWP can be prevented.
Alternatively, referring to fig. 7, when a terminal includes N bandwidth regions, the granularity of resource indications of the N bandwidth regions in the same terminal is the same. Specifically, referring to fig. 7, in this embodiment, the granularity of the resource indication of N bandwidth areas in the same terminal is set to be the same, for example, the granularity of the resource indication of BWP0 and BWP1 in fig. 6 is set to be 6, that is, 1 bit indicates 6 PRBs, and the granularity of all BWP in the same terminal is set to be the same, so that the problem of different resource indication overheads in the downlink control information due to different granularity is avoided, which is beneficial to reducing the overhead of radio resource signaling.
Optionally, referring to fig. 1 and fig. 6, for a terminal including a bandwidth area, in step 25, the control terminal parses the configuration information to obtain a frequency domain location of CORESET, specifically: transmitting a command to the terminal, so that the terminal determines fields corresponding to bits in the configuration information according to a protocol, wherein the fields at least comprise a physical resource block identification area and a frequency domain position indication area; and obtaining the frequency domain position indicated by the CORESET in the bandwidth area according to the bit data of the frequency domain position indication area.
Specifically, referring to fig. 1, when the configuration information is analyzed in step 25, an analysis command is sent to the terminal, after the terminal receives the analysis command, the terminal determines a field corresponding to each bit in the configuration information according to a protocol, where the field at least includes a PRB identification region and a frequency domain position indication region, for example, a first bit in fig. 6 is a PRB identification region, which includes a PRB identification bit, and a later bit indicates the frequency domain position indication region, after the field indicating the frequency domain position indication region is obtained by analysis, a frequency domain position indicated by CORESET of the terminal can be obtained according to a value of each bit in the field, for example, the frequency domain position indication region has 9 bits, and all bits are 1, and the CORESET occupies all PRBs; if only the first bit in the frequency domain position indication area is 1 and the granularity of the terminal is 6, the first 6 PRBs are occupied by the CORESET, namely PRB0 to PRB5.
Optionally, referring to fig. 1 and fig. 8, for a terminal including N bandwidth areas, in step 35, the control terminal parses the configuration information to obtain a frequency domain location of CORESET, specifically: transmitting a command to the terminal, so that the terminal determines fields corresponding to bits in the configuration information according to a protocol, wherein the fields at least comprise a physical resource block identification area, a bandwidth area identification area and a frequency domain position indication area; and determining a current bandwidth area corresponding to the current configuration information according to the bandwidth area identification area, and obtaining the frequency domain position indicated by CORESET in the current bandwidth area according to the bit data of the indication area.
Specifically, referring to fig. 1, when the configuration information is parsed in step 35, a parsing command is sent to the terminal, after the terminal receives the parsing command, the terminal determines a field corresponding to each bit in the configuration information according to the protocol, unlike the terminal including only one BWP, the configuration information including a plurality of BWP further includes BWP identification bits, so that the corresponding field includes a BWP identification region in addition to a PRB identification region and a frequency domain location indication region, for example, the first two bits in fig. 8 are the BWP identification region, the third bit is the PRB identification region, and the bit between the PRB identification region and the next BWP identification region indicates a frequency domain location indication region of BWP0, the field indicating the frequency domain location indication region corresponding to each BWP can be obtained by parsing, the frequency domain location indicated by CORESET corresponding to each BWP is obtained according to the value of each bit in the field, and the specific analysis method of occupied frequency domain location is similar to the analysis method including one BWP, which is not repeated here.
Based on the same inventive concept, fig. 9 is a schematic structural diagram of a CORESET resource allocation and indication device provided in an embodiment of the present application, and please refer to fig. 9, where CORESET resource allocation and indication device 100 provided in an embodiment of the present application includes:
a judging module 110, configured to judge whether the number of bandwidth areas included in the terminal is equal to 1;
a physical resource block index obtaining module 120, configured to number physical resource blocks included in the bandwidth area, and obtain a physical resource block index of the bandwidth area;
an allocation result obtaining module 130, configured to determine resources occupied by CORESET in the bandwidth area and obtain CORESET resource allocation results;
a configuration information obtaining module 140, configured to add at least 1 bit of physical resource block identification bit to the CORESET resource allocation result when the terminal includes a bandwidth area, to obtain configuration information; when the terminal comprises N bandwidth areas, adding at least 1 bit of physical resource block identification bits and M bit of bandwidth area identification bits into a CORESET resource allocation result to obtain configuration information; wherein 2 is M Not less than N, M is an integer;
a transmitting module 150, configured to transmit the configuration information to the terminal through a radio resource control signaling;
The frequency domain position obtaining module 160 is configured to control the terminal to parse the configuration information and obtain a frequency domain position indicated by the CORESET resource.
Specifically, referring to fig. 9, the CORESET resource allocation and indication device 100 provided in the embodiments of the present application includes a determining module 110, a physical resource block index obtaining module 120, an allocation result obtaining module 130, and a configuration information obtaining module 140. When the device 100 works, the judging module 110 is used to judge that the terminal includes several BWP, and the physical resource block index obtaining module 120 is used to number the PRBs in one or more BWP, so as to obtain the PRB index of the PRB based on BWP. And then, acquiring resources occupied by the CORESET of the terminal by using the allocation result acquiring module 130 to obtain a schematic diagram of the frequency domain resources occupied by the CORESET of the terminal, for example, occupied bits are represented by 1, unoccupied bits are represented by 0, and the frequency domain resource allocation result of the CORESET can be obtained according to the values of each bit in the schematic diagram.
When the terminal only contains one BWP, the configuration information obtaining module 140 adds a PRB identification bit into the frequency domain resource allocation result of CORESET, so as to obtain a bitmap (bitmap) of the CORESET, and uses the bitmap as configuration information of CORESET frequency domain resources of the terminal. By adding the PRB identification bit into the frequency domain resource allocation result of CORESET, the current index can be explicitly represented as the BWP-level PRB index, and confusion with the full-bandwidth-level PRB index is avoided. When the terminal includes N BWP, where N is an integer greater than or equal to 2, the terminal operates under N BWP, and in addition to the terminal capable of identifying that it operates based on BWP level, an identifier capable of distinguishing each BWP in the terminal needs to be added, so that, for the terminal including multiple BWP, a PRB identifier bit and an M-bit BWP identifier bit are simultaneously added in a resource allocation result through the configuration information obtaining module 140, a bitmap of the CORESET is obtained, and the bitmap is used as configuration information of CORESET frequency domain resources of the terminal.
In order to avoid confusion between the PRB identification bits and the BWP identification bits, the PRB identification bits are usually set to 1 bit, and the BWP identification bits are set to M bits, where 2M is equal to or greater than N, and M is an integer, and since N is an integer equal to or greater than 2, the value of M is equal to or greater than 2, that is, the BWP identification bits are at least 2 bits.
With continued reference to fig. 9, the CORESET resource allocation and indication device 100 provided in the embodiments of the present application further includes a sending module 150 and a frequency domain location obtaining module 160, where after obtaining the configuration information, the sending module 150 allocates radio resources and sends related signaling by using RRC, and sends the configuration information to the terminal. Then, the frequency domain position obtaining module 160 controls the terminal to analyze the received configuration information about the CORESET frequency domain resource, and obtains the frequency domain position indicated by CORESET of the terminal.
The CORESET resource allocation and indication device 100 provided in the present application increases the BWP-level PRB index on the basis of the full-bandwidth PRB index, so that not only a terminal including only one BWP but also a terminal including a plurality of BWP can be supported, and the PRB identification bit is added in the bitmap to distinguish the BWP-level PRB index from the full-bandwidth-level PRB index, thereby avoiding confusion with the full-bandwidth-level PRB index and ensuring that the subsequent CORESET frequency domain location indication is correct. When the terminal contains a plurality of BWPs, each BWP is accurately distinguished by adding a BWP identification bit, so that indication of the frequency domain position occupied by CORESET under each BWP in the terminal is realized. The method and the device support CORESET resource allocation and indication under one or more BWPs, have wide application range, and are beneficial to reducing the cost of RRC signaling by indicating the frequency domain position of the CORESET through the BWP level index.
Optionally, referring to fig. 9, the physical resource block index obtaining module 120 is further configured to obtain a bandwidth occupied by the bandwidth area and a subcarrier interval, calculate, according to the bandwidth occupied by the bandwidth area and the subcarrier interval, the number n of physical resource blocks included in the bandwidth area under one time domain symbol, and sequentially obtain physical resource block indexes of the bandwidth area as 1-n according to the physical resource block numbers of 1-n.
Specifically, since BWP only occupies a part of the full bandwidth of the system and its subcarrier spacing may be different from that of the system, when obtaining the PRB index of BWP, it is first necessary to query the bandwidth occupied by the BWP and the subcarrier spacing, and calculate the number of PRBs contained in the BWP according to the bandwidth and the subcarrier spacing, for example, the BWP bandwidth is 20MHz, the subcarrier spacing is 60KHz, the number of subcarriers in the BWP is n1=20 MHz/60KHz, and one PRB contains 12 subcarriers, therefore, the number of PRBs is n=n 1/12=27, and each PRB number is sequentially 1-27, so that the PRB index in the BWP can be obtained as 1-27. Of course, when numbering PRBs, the numbering may be performed in other ways, for example starting from 0 to ending with n-1, i.e. the PRB index is 0- (n-1).
Optionally, fig. 10 is a schematic diagram of another structure of a CORESET resource allocation and indication device 100 provided in an embodiment of the present application, referring to fig. 10, the CORESET resource allocation and indication device 100 provided in the embodiment of the present application further includes: the granularity setting module 180 is configured to set the granularity of the resource indication of the terminal to be y, where the terminal includes n/y bits; wherein granularity representation 1 bit indicates y physical resource blocks; an allocation result obtaining module 130, configured to take the occupied bit as a value of 1 and the unoccupied bit as a value of 0; and obtaining the CORESET resource allocation result according to the value of each bit.
Specifically, when the CORESET resource allocation result is obtained, the granularity of the resource indication of the terminal is set by the granularity setting module 180, for example, when the granularity of the resource indication is set to be 6, it indicates that 1 bit indicates 6 PRBs, so that when the terminal contains 54 PRBs, the terminal contains 9 bits in total. And in the allocation result obtaining module 130, the occupied bit is assigned to be 1, the unoccupied bit is assigned to be 0, and the CORESET resource allocation result of the terminal is obtained according to the value condition of each bit. It should be noted that the setting of the granularity of the resource indication to 6 is only one schematic illustration, and the granularity of the resource indication can be flexibly adjusted for different service types, so as to meet the performance requirements required by different services.
Alternatively, referring to fig. 10, when the terminal includes N bandwidth areas, the granularity setting module 180 is further configured to set the granularity of the resource indication of the N bandwidth areas in the same terminal to be the same. Specifically, referring to fig. 10, in this embodiment, the granularity of the resource indication of the N bandwidth areas in the same terminal is set to be the same through the granularity setting module 180, for example, a certain terminal includes the terminal BWP0 and the terminal BWP1, the granularity of the resource indication of the BWP0 and the BWP1 is set to be 6, that is, 1 bit indicates 6 PRBs, and the granularity of all the BWP in the same terminal is set to be the same, so that the problem of different resource indication overheads in the downlink control information caused by different granularity is avoided, which is beneficial to reducing the overhead of the radio resource signaling.
According to the embodiments, the beneficial effects of the application are as follows:
according to the CORESET resource allocation and indication method and device, based on the full-bandwidth PRB index, the BWP level PRB index is added, so that a terminal containing only one BWP can be supported, a terminal containing a plurality of BWPs can be supported, the BWP level PRB index and the full-bandwidth PRB index are distinguished by adding the PRB identification bit in the bitmap, confusion with the full-bandwidth PRB index is avoided, and the fact that the subsequent CORESET frequency domain position indication is correct is ensured. When the terminal contains a plurality of BWPs, each BWP is accurately distinguished by adding a BWP identification bit, so that indication of the frequency domain position occupied by CORESET under each BWP in the terminal is realized. The method and the device support CORESET resource allocation and indication under one or more BWPs, have wide application range, and are beneficial to reducing the cost of RRC signaling by indicating the frequency domain position of the CORESET through the BWP level index.
It will be apparent to those skilled in the art that embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
While the foregoing description illustrates and describes the preferred embodiments of the present application, it is to be understood that this application is not limited to the forms disclosed herein, but is not to be construed as an exclusive use of other embodiments, and is capable of many other combinations, modifications and environments, and adaptations within the scope of the inventive concept described herein, through the foregoing teachings or through the skill or knowledge of the relevant arts. And that modifications and variations which do not depart from the spirit and scope of the present invention are intended to be within the scope of the appended claims.

Claims (9)

1. A CORESET resource allocation and indication method, comprising:
Judging whether the number of bandwidth areas contained in the terminal is equal to 1:
if the terminal comprises a bandwidth area, numbering physical resource blocks contained in the bandwidth area to obtain a physical resource block index of the bandwidth area; determining resources occupied by CORESET in the bandwidth region and obtaining a CORESET resource allocation result; adding at least 1 bit of physical resource block identification bit into the CORESET resource allocation result to obtain configuration information; transmitting the configuration information to the terminal through a radio resource control signaling; the terminal is controlled to analyze the configuration information to obtain the frequency domain position indicated by the CORESET;
if the terminal comprises N bandwidth areas, wherein N is an integer greater than or equal to 2, numbering physical resource blocks contained in the N bandwidth areas in sequence to obtain physical resource block indexes of the bandwidth areas; determining resources occupied by COESET in each bandwidth region and obtaining a COESET resource allocation result in each bandwidth region; adding at least 1 bit of physical resource block identification bit and M bits of bandwidth area identification bit into the CORESET resource allocation result to obtain configuration information, wherein the configuration information is bit data; wherein 2 is M Not less than N, M is an integer; transmitting the configuration information to the terminal through a radio resource control signaling; the terminal is controlled to analyze the configuration information to obtain the frequency domain position indicated by the CORESET;
when the terminal comprises N bandwidth areas, the granularity of the resource indication of the N bandwidth areas in the same terminal is the same;
and adding at least 1 bit of the physical resource block identification bit into the CORESET resource allocation result, wherein the physical resource block identification bit is used for distinguishing a bandwidth area level physical resource block index and a full bandwidth level physical resource block index.
2. The CORESET resource allocation and indication method of claim 1, wherein the numbering of physical resource blocks included in the bandwidth region obtains a physical resource block index of the bandwidth region, specifically:
and acquiring the bandwidth occupied by the bandwidth region and the subcarrier spacing, calculating the number n of physical resource blocks contained in the bandwidth region under one time domain symbol according to the bandwidth occupied by the bandwidth region and the subcarrier spacing, and sequentially taking the physical resource blocks as the numbers according to 1-n to obtain the physical resource block indexes of the bandwidth region as 1-n.
3. The CORESET resource allocation and indication method of claim 2, wherein the determining the resources occupied by CORESET in the bandwidth area and obtaining the CORESET resource allocation result is specifically:
setting the granularity of the resource indication of the terminal as y, wherein the terminal comprises n/y bits; wherein the granularity representation 1 bit indicates y physical resource blocks;
the occupied bit is valued at 1, and the unoccupied bit is valued at 0; and obtaining a CORESET resource allocation result according to the value of each bit.
4. The CORESET resource allocation and indication method of claim 1, wherein, for a terminal comprising a bandwidth region,
the terminal is controlled to analyze the configuration information to obtain the frequency domain position of the CORESET, specifically:
transmitting a command to the terminal, so that the terminal determines fields corresponding to bits in the configuration information according to a protocol, wherein the fields at least comprise a physical resource block identification area and a frequency domain position indication area;
and obtaining the frequency domain position indicated by the CORESET resource in the bandwidth region according to the bit data of the frequency domain position indication region.
5. The CORESET resource allocation and indication method of claim 1, wherein, for a terminal comprising N bandwidth regions,
The terminal is controlled to analyze the configuration information to obtain the frequency domain position of the CORESET, specifically:
transmitting a command to the terminal, so that the terminal determines fields corresponding to bits in the configuration information according to a protocol, wherein the fields at least comprise a physical resource block identification area, a bandwidth area identification area and a frequency domain position indication area;
and determining a current bandwidth region corresponding to the current configuration information according to the bandwidth region identification region, and obtaining the frequency domain position indicated by the CORESET resource in the current bandwidth region according to the bit data of the indication region.
6. A CORESET resource allocation and indication device, comprising:
the judging module is used for judging whether the number of the bandwidth areas contained in the terminal is equal to 1;
a physical resource block index obtaining module, configured to number physical resource blocks included in the bandwidth area, and obtain a physical resource block index of the bandwidth area;
the allocation result acquisition module is used for determining resources occupied by CORESET in the bandwidth area and acquiring a CORESET resource allocation result;
the configuration information acquisition module is used for adding at least 1 bit of physical resource block identification bit into the CORESET resource allocation result when the terminal comprises a bandwidth area, so as to acquire configuration information; when the terminal contains N bandwidth areas, the terminal is used for adding at least 1 bit physical resource block identification bit into the CORESET resource allocation result And M bit bandwidth area identification bits to obtain configuration information; wherein 2 is M Not less than N, M is an integer;
a sending module, configured to send the configuration information to the terminal through a radio resource control signaling;
the frequency domain position acquisition module is used for controlling the terminal to analyze the configuration information to acquire the frequency domain position indicated by the CORESET resource;
the granularity setting module is also used for setting the granularity of the resource indication of the N bandwidth areas in the same terminal to be the same when the terminal comprises the N bandwidth areas;
and adding at least 1 bit of the physical resource block identification bit into the CORESET resource allocation result, wherein the physical resource block identification bit is used for distinguishing a bandwidth area level physical resource block index and a full bandwidth level physical resource block index.
7. The CORESET resource allocation and indication device of claim 6, wherein,
the physical resource block index obtaining module is further configured to obtain a bandwidth and a subcarrier spacing occupied by the bandwidth area, calculate, according to the bandwidth and the subcarrier spacing occupied by the bandwidth area, the number n of physical resource blocks included in the bandwidth area under one time domain symbol, and sequentially obtain, according to 1-n, the physical resource block numbers of the bandwidth area, so as to obtain a physical resource block index of 1-n.
8. The CORESET resource allocation and indication device of claim 7, further comprising:
the granularity setting module is used for setting the granularity of the resource indication of the terminal as y, and the terminal comprises n/y bits; wherein the granularity representation 1 bit indicates y physical resource blocks;
the allocation result obtaining module is used for taking the occupied bit as a value 1 and taking the unoccupied bit as a value 0; and obtaining a CORESET resource allocation result according to the value of each bit.
9. The CORESET resource allocation and indication device of claim 8, wherein,
and the granularity setting module is also used for setting the granularity of the resource indication of the N bandwidth areas in the same terminal to be the same when the terminal comprises the N bandwidth areas.
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